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Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
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1

The architectural approach : Daylighting The New York Times Building  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

architectural approach architectural approach Overview The architectural approach The owner's approach Daylighting field study Daylighting control systems Automated roller shades Procurement specifications Shades and Shade Controls Lighting Controls Visualizing daylight Commissioning/ verification Demand response Mainstream solutions Post-occupancy evaluation Publications Sponsors Project team The architectural approach Proper architectural and interior design are key to successful realization of daylighting in buildings. The New York Times Building was designed by Renzo Piano, an internationally distinguished, Pritzker prize winning architect in association with Fox & Fowle, a leading high rise architectural firm based on New York City. In concert with Renzo Piano's design, the interiors were designed by Gensler, a leading interior design firm. Flack + Kurtz, Inc. provided MEP engineering. SBLD Studio, Inc. provided lighting design services.

2

THE INTEGRATED APPROACH TIPS FOR DAYLIGHTING  

E-Print Network [OSTI]

approach to the cost-effective design of perimeter zones in new commercial buildings and existing building retrofits. They function as a quick reference for building designers, through a set of easy steps and rules the reader wish to go further. The design method used in this document emphasizes that building decisions

3

Daylighting control performance of a thin-film ceramic electrochromic window: field study results  

E-Print Network [OSTI]

1 Daylighting control performance of a thin-film ceramic electrochromic window: field study results-film electrochromic (EC) windows were initiated at the new full-scale Window Systems testbed facility at the Lawrence of this emerging technology. Keywords: Building energy-efficiency; Electrochromic windows; Daylighting; Control

4

Daylighting control systems : Daylighting The New York Times Building  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

control systems control systems Overview The architectural approach The owner's approach Daylighting field study Daylighting control systems Automated roller shades Procurement specifications Shades and Shade Controls Lighting Controls Visualizing daylight Commissioning/ verification Demand response Mainstream solutions Post-occupancy evaluation Publications Sponsors Project team Daylighting control systems Lighting energy savings were greater in zones daylit bilaterally from both the southwest and northwest facades, typically 50-60% at 11 feet from the windows and 25-40% at 14-25 feet from the façade. Total illuminance was maintained in all lighting zones to within -10% of the setpoint for 95-100% of the day throughout most of the nine-month monitored period. Daylight "harvesting" strategies are implemented using daylighting control systems that dim the electric lighting in response to interior daylight levels. For commercial applications, the light output of fluorescent lamps (T5 or T8) are varied by using electronic dimming ballasts. Photosensors, typically mounted in the ceiling, are used to measure the quantity of daylight in the space then determine the amount of dimming required to maintain the design work plane illuminance level. If daylight levels are more than adequate, the electric lights can be shut off. Simulation studies indicate that annual energy use and peak demand can be reduced by 20-30% compared to a non-daylit building. These technological solutions are increasingly becoming one of the key means to achieving compliance with stringent energy-efficiency standards and achieving LEED ratings for sustainable design.

5

An intuitive daylighting performance analysis and optimization approach  

E-Print Network [OSTI]

The effective integration of daylighting considerations into the design process requires many issues to be considered simultaneously, such as daily and seasonal variations, illumination, and thermal comfort. To address the ...

Andersen, Marilyne

6

Overview : Daylighting The New York Times Building  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Overview Overview Overview The architectural approach The owner's approach Daylighting field study Daylighting control systems Automated roller shades Procurement specifications Shades and Shade Controls Lighting Controls Visualizing daylight Commissioning/ verification Demand response Mainstream solutions Post-occupancy evaluation Publications Sponsors Project team Overview "Despite the growing interest in daylighting, "getting it right" remains a challenge. Elegant images in architectural magazines don't automatically translate into sustainable designs with proven comfort and energy performance. Controlling thermal heat loss and gain can be largely addressed with highly insulating glazing technologies on the market today. However, controlling solar gain and managing daylight, view, and glare is at a much earlier stage in terms of cost-effective, available solutions."

7

Daylighting The New York Times Building  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Overview The architectural approach The owner's approach Daylighting field study Daylighting control systems Automated roller shades Procurement specifications Shades and Shade Controls Lighting Controls Visualizing daylight Commissioning/ verification Demand response Mainstream solutions Post-occupancy evaluation Publications Sponsors Project team NEW: Post-occupancy Evaluation Publications Daylighting The New York Times Headquarters Building This website provides information on a collaboration between The New York Times Company, the Lawrence Berkeley National Laboratory, industry, and three major public funding agencies designed to transform the market for emerging automated window shade systems and daylighting controls so that these types of energy-efficient products become the norm. Project activities included documenting and demonstrating that the technology works and generates energy savings in real world applications, creating a market response so that these systems are available at commodity prices and are cost-effective, making third party performance data available to the public, and providing guidance to support widespread deployment.

8

Publications : Daylighting The New York Times Building  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Publications Publications Overview The architectural approach The owner's approach Daylighting field study Daylighting control systems Automated roller shades Procurement specifications Shades and Shade Controls Lighting Controls Visualizing daylight Commissioning/ verification Demand response Mainstream solutions Post-occupancy evaluation Publications Sponsors Project team Publications Technical Publications Post-occupancy Evaluation A post-occupancy monitored evaluation of the dimmable lighting, automated shading, and underfloor air distribution system in The New York Times Building. Eleanor S. Lee, Luis L. Fernandes, Brian Coffey, Andrew McNeil, Robert Clear, Tom Webster, Fred Bauman, Darryl Dickerhoff, David Heinzerling, Tyler Hoyt. LBNL Technical report, January 2013. LBNL-6023E.

9

Using the whole-building design approach to incorporate daylighting into a retail space: Preprint  

SciTech Connect (OSTI)

This paper focuses on implementation of daylighting into the Bighorn Center, a collection of home improvement retail spaces in Silverthorne, Colorado, which were constructed in three phases. Daylighting was an integral part of the design of the Phase 3 building. Energy consultants optimized the daylighting design through detailed modeling using an hourly building energy simulation tool. Energy consultants also used this tool to address the building owner's concerns related to customer comfort and increased product sales.

Hayter, S.; Torcellini, P.; Eastment, M.; Judkoff, R.

2000-06-21T23:59:59.000Z

10

Project team : Daylighting The New York Times Building  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Project team Project team Overview The architectural approach The owner's approach Daylighting field study Daylighting control systems Automated roller shades Procurement specifications Shades and Shade Controls Lighting Controls Visualizing daylight Commissioning/ verification Demand response Mainstream solutions Post-occupancy evaluation Publications Sponsors Project team Project team To contact the following individuals, please call the number listed or enable JavaScript within your browser's preferences. The New York Times Company Angelo Salvatore Executive Director of Building Operations Patrick Whelan Facilities Director Glenn Hughes Director of Construction/ Real Estate David Thurm Chief Information Officer Hussain Ali-Khan Vice President, Real Estate Development

11

A new approach in data visualization to integrate time and space variability of daylighting in the design process  

E-Print Network [OSTI]

Daylighting design has great impact on the performance and aesthetical quality of a work of architecture but requires many issues to be addressed during the design process. The way existing daylighting tools deliver data ...

Yi, Lu, S.M. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

12

Automated roller shades : Daylighting The New York Times Building  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Automated roller shades Automated roller shades Overview The architectural approach The owner's approach Daylighting field study Daylighting control systems Automated roller shades Procurement specifications Shades and Shade Controls Lighting Controls Visualizing daylight Commissioning/ verification Demand response Mainstream solutions Post-occupancy evaluation Publications Sponsors Project team Automated roller shades Automated roller shades manage daylight, solar heat gains, view, glare, privacy, and building appearance through changes in shade height. A roller shade consists of a fabric wrapped around a horizontal tube, which contains a tubular motor. The tubular motor rotates when ac- or dc- power is applied to it causing modulation in shade height. The control system can be designed to optimize numerous variables, the most common being control of direct sun. In this application, the shades were controlled to five preset heights that aligned with the architectural features of the façade - i.e., the vision portion of the window wall - so that direct sun penetrated no more than a specified distance from the window wall. The Times Company also requested that the shades control window glare, yet maximize the opportunity for view and daylight admission. Unnecessary up/down movement of the shade was to be minimized. Fabric choices (openness of the weave, color of the fabric facing toward the interior and exterior) were additional considerations in terms of appearance as well as visual comfort and daylighting benefits.

13

Daylighting | Open Energy Information  

Open Energy Info (EERE)

TODO: Add description List of Daylighting Incentives Retrieved from "http:en.openei.orgwindex.php?titleDaylighting&oldid267157" Category: Articles with outstanding TODO tasks...

14

THE DAYLIGHTING SOLUTION  

E-Print Network [OSTI]

1980, pp.l4-20 THE DAYLIGHTING SOLUTION Stephen SelkowitzEEB-W-80-19 W-74 THE DAYLIGHTING SOLUTION Stephen Selkowitz

Selkowitz, Stephen

2013-01-01T23:59:59.000Z

15

Capturing the Daylight Dividend  

SciTech Connect (OSTI)

Capturing the Daylight Dividend conducted activities to build market demand for daylight as a means of improving indoor environmental quality, overcoming technological barriers to effective daylighting, and informing and assisting state and regional market transformation and resource acquisition program implementation efforts. The program clarified the benefits of daylight by examining whole building systems energy interactions between windows, lighting, heating, and air conditioning in daylit buildings, and daylighting's effect on the human circadian system and productivity. The project undertook work to advance photosensors, dimming systems, and ballasts, and provided technical training in specifying and operating daylighting controls in buildings. Future daylighting work is recommended in metric development, technology development, testing, training, education, and outreach.

Peter Boyce; Claudia Hunter; Owen Howlett

2006-04-30T23:59:59.000Z

16

Tips for Daylighting - Browse  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Tips for Daylighting with Windows Tips for Daylighting with Windows These guidelines provide an integrated approach to the cost-effective design of perimeter zones in new commercial buildings. They function as a quick reference for designers through a set of easy steps and rules-of-thumb, emphasizing "how-to" practical details. References are given to more detailed sources of information, should the reader wish to go further. No guidelines can answer all possible questions from all types of users. However, this document addresses the most commonly occurring scenarios. The guidance here is limited by the medium; short paper documents can only go so far in assisting a designer with a unique project. This document has been carefully shaped to best meet the needs of a designer when time does not permit a more extensive form of assistance.

17

Evaluating post-occupancy performance : Daylighting The New York Times  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Evaluating post-occupancy performance Evaluating post-occupancy performance Overview The architectural approach The owner's approach Daylighting field study Daylighting control systems Automated roller shades Procurement specifications Shades and Shade Controls Lighting Controls Visualizing daylight Commissioning/ verification Demand response Mainstream solutions Post-occupancy evaluation Publications Sponsors Project team Evaluating post-occupancy performance "We aggressively pursued innovative designs to improve the quality of the workplace for our employees and to reduce energy use and other operating costs of our facility. The outcomes of this study confirm that we were successful. More importantly, our hope is that the energy efficient measures and designs documented in this independent study may inspire other companies' workplace designs." - Angelo Salvatore, Executive Director of Building Operations, The Times Company.

18

Shades and Shade Controls : Daylighting The New York Times Building  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Shades and Shade Controls Shades and Shade Controls Overview The architectural approach The owner's approach Daylighting field study Daylighting control systems Automated roller shades Procurement specifications Shades and Shade Controls Lighting Controls Visualizing daylight Commissioning/ verification Demand response Mainstream solutions Post-occupancy evaluation Publications Sponsors Project team Shades and Shade Controls The shades and shade controls scope of work is based upon the philosophy that occupants of commercial office buildings prefer natural light to electric light. The shade system goals for The New York Times Building are: Maximize natural light Maximize occupant connectivity with the outdoors, i.e. external views Intercept sunlight penetration so as to avoid direct solar radiation on the occupants

19

Daylighting | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Daylighting Daylighting Daylighting July 29, 2012 - 5:58pm Addthis Daylighting is the use of windows and skylights to bring sunlight into your home. | Photo courtesy of Heather Lammers, NREL. Daylighting is the use of windows and skylights to bring sunlight into your home. | Photo courtesy of Heather Lammers, NREL. TIPS: See our tips for energy-efficient windows. Daylighting is the use of windows and skylights to bring sunlight into your home. Today's highly energy-efficient windows, as well as advances in lighting design, reduce the need for artificial lighting during daylight hours without causing heating or cooling problems. The best way to incorporate daylighting in your home depends on your climate and home's design. The sizes and locations of windows should be based on the cardinal directions rather than their effect on the

20

Window Daylighting Demo  

Broader source: Energy.gov (indexed) [DOE]

Window Daylighting Demo: Window Daylighting Demo: Accelerated Deployment of Daylighting and Shading Systems Stephen Selkowitz Lawrence Berkeley National Laboratory seselkowitz@lbl.gov 510-486-5064 April 4, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: * Façade has large energy impacts. Cooling and lighting average ~ 40% of energy use in commercial buildings and often >50% in peak electric demand. * Many glazing/shading/daylighting options exist, but selecting the "best" solution is

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Window Daylighting Demo  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Window Daylighting Demo: Window Daylighting Demo: Accelerated Deployment of Daylighting and Shading Systems Stephen Selkowitz Lawrence Berkeley National Laboratory seselkowitz@lbl.gov 510-486-5064 April 4, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: * Façade has large energy impacts. Cooling and lighting average ~ 40% of energy use in commercial buildings and often >50% in peak electric demand. * Many glazing/shading/daylighting options exist, but selecting the "best" solution is

22

Lighting Controls : Daylighting The New York Times Building  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Lighting Controls Lighting Controls Overview The architectural approach The owner's approach Daylighting field study Daylighting control systems Automated roller shades Procurement specifications Shades and Shade Controls Lighting Controls Visualizing daylight Commissioning/ verification Demand response Mainstream solutions Post-occupancy evaluation Publications Sponsors Project team Lighting Controls The lighting controls scope of work is based upon the philosophy that occupants of commercial office buildings prefer natural light to electric light. The lighting controls system specified by the Times Company for its new headquarters building is a DALI (Digital Addressable Lighting Interface) based system with dimmable fixtures throughout the interior space. This allows the system to dim down the electric lighting in response to daylight admittance. It also provides for variable target set points for illuminance levels at the work plane. The Times Company intends to establish and adjust target set points on a departmental basis. The lighting control sequences are described within the specification 16575. These sequences utilize occupancy sensors, photo sensors, switches and a time clock to control the lighting in the interior space on each floor. The emergency lighting system is also described within the specification. The lighting control sequences are tied to Control Intent Diagrams that divide up the space on each floor into its various control zones. The overall intent is to provide electric light only when the space is occupied and to provide as little electric light as is necessary to achieve the target set point for the work plane in a given department. A department usually occupies multiple floors.

23

Commissioning/ verification : Daylighting The New York Times Building  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Commissioning/ verification Commissioning/ verification Overview The architectural approach The owner's approach Daylighting field study Daylighting control systems Automated roller shades Procurement specifications Shades and Shade Controls Lighting Controls Visualizing daylight Commissioning/ verification Demand response Mainstream solutions Post-occupancy evaluation Publications Sponsors Project team Commissioning/ verification The construction cycle of the building life cycle is the time when the design intent is translated into a physical reality. Given novel integrated systems with which contractors (vendors, installers, commissioning (Cx) agents, etc.) do not have much experience, there is a risk that carefully laid plans will go amiss. To insure that the automated shading and daylighting control systems were installed and operating as intended, the manufacturers, LBNL, and the Times Company developed procedures to commission and verify system performance. With verification data resulting from these procedures, the Times Company possessed the unique capability to measure and compare performance to design intent then discuss and tune system performance with the manufacturer prior to closure of the work scope and occupancy of the building.

24

Light and Energy -Daylight measurements  

E-Print Network [OSTI]

Light and Energy - Daylight measurements #12;Light and Energy - Daylight measurements Authors: Jens;3 Title Light and Energy Subtitle Daylight measurements Authors Jens Christoffersen, Ásta Logadóttir ............................................................................... 7 Measurement results: Kyosemi.................................................................. 9

25

Energy 101: Daylighting  

ScienceCinema (OSTI)

Daylighting?the use of windows or skylights for natural lighting and temperature regulation?is one building strategy that can save money for homeowners and businesses. Highly efficient, strategically placed windows maximize the use of natural daylight in a building, lowering the need for artificial lighting without causing heating or cooling problems.

None

2013-05-29T23:59:59.000Z

26

Daylighting directory 6/1980  

SciTech Connect (OSTI)

A renewed interest in the energy conservation potential of daylighting has generated new research, applications and demonstration activities over the last few years. It is apparent that even those people actively working in the field are frequently not aware of all of the ongoing projects and activities. At the same time, the total national effort to utilize daylighting effectively in buildings on a broad scale is still very small, thus making it important that current activities are crossfertilized. The intent of this directory is to provide current listings of individuals and organizations that are actively engaged in daylighting work and related publications and upcoming events of interest. This directory was compiled from information contained in the survey response forms which were filled out and returned to us over the last few months. Responsibility for the accuracy and completeness of each survey form lies entirely with the respondents. The directory is composed of five parts: (1) Participant Survey Response: contains the survey response forms as submitted to us, listed alphabetically by responding organization; (2) Activity Index: lists individual respondents alphabetically, showing the daylighting activities each has checked. Allows the reader to quickly identify the individuals working in a specific area. Once an individual is identified, turn to the Individual Index to find the page numbers where that individual may be located in other areas of the directory; (3) Individual Index: lists individual respondents alphabetically; (4) Daylighting publications: lists the publications by each respondent (authors listed alphabetically); and (5) Notes of Interest: contains a variety of information on meetings, conferences, new projects and publications, etc. This material was collected from a variety of sources in addition to the survey respondents.

Not Available

1980-06-01T23:59:59.000Z

27

Madrid Daylighting Report  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

REPORTS - Daylighting Quality Page REPORTS - Daylighting Quality Page 1 of 2 DAYLIGHTING QUALITY 1) NATURAL LIGHTING The main criteria for interior design is leading the user from darkness toward daylight. For this reason, the main source of daylighting is the south wall. Moreover, a whole part of the house may be unfolded, letting an internal open courtyard provide a touch of natural environment into the house. Small fixed windows with steel sash and frames are also strategically located to allow the user to get a beam of the morning or sunset light -even though such orientations are inconvenient from a bioclimatic point of view-, as well as to see the outside while working or having lunch. In most cases, glass is covered with shutters and stainless steel frames fitting woven wire

28

Windows and Daylighting  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Office building exterior Office building exterior Windows and Daylighting Windows research is aimed at improving energy efficiency in buildings and homes across the nation. Research includes: New glazing materials Windows simulation software Advanced high-performance fenestration systems Daylighting technologies Measurement of window properties Windows performance in residential and commercial buildings. Contacts Stephen Selkowitz SESelkowitz@lbl.gov (510) 486-5064 Eleanor Lee ESLee@lbl.gov (510) 486-4997 Charlie Curcija DCCurcija@lbl.gov (510) 495-2602 Links Windows and Daylighting Daylighting the New York Times Headquarters Building Batteries and Fuel Cells Buildings Energy Efficiency Applications Commercial Buildings Cool Roofs and Heat Islands Demand Response Energy Efficiency Program and Market Trends

29

Cornell University Daylighting Report  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Daylighting Quality Daylighting Quality With a small building footprint and a relatively large vertical surface area, the CUSD house has the unique opportunity to supply almost all of its lighting with daylight. Keeping this in mind, we have created two large apertures, one on the south side of the building and one on the north side of the building. The southern aperture is a tri-fold glass door, opening to the living room on the west side of the house. This fenestration provides ambient light and some heat to the space during the day. Occupants can take advantage of this daylight as they go to and return from work, prepare meals, and relax in the living area. Concrete pavers (thermal mass) are placed inside and outside of the southern aperture, bridging the threshold between interior and exterior spaces. The

30

Daylighting Basics | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Daylighting Basics Daylighting Basics Daylighting Basics August 16, 2013 - 11:24am Addthis Energy 101: Daylighting Basics This video explains how homeowners and businesses can use highly efficient, strategically placed windows to save money. Text Version Daylighting is the use of windows and skylights to bring sunlight into buildings. Daylighting in businesses and commercial buildings can result in substantial savings on electric bills, and not only provides a higher quality of light but also improves productivity and health. Daylighting in schools has even improved student grades and attendance. Today's highly energy-efficient windows, as well as advances in lighting design, allow efficient use of windows to reduce the need for artificial lighting during daylight hours without causing heating or cooling problems.

31

Definition: Daylighting | Open Energy Information  

Open Energy Info (EERE)

Daylighting Daylighting Jump to: navigation, search Dictionary.png Daylighting The use of natural sunlight to provide interior lighting for a building.[1] View on Wikipedia Wikipedia Definition Daylighting is the practice of placing windows or other openings and reflective surfaces so that during the day natural light provides effective internal lighting. Particular attention is given to daylighting while designing a building when the aim is to maximize visual comfort or to reduce energy use. Energy savings can be achieved either from the reduced use of artificial (electric) lighting or from passive solar heating or cooling. Artificial lighting energy use can be reduced by simply installing fewer electric lights because daylight is present, or by dimming/switching electric lights automatically in response to the presence of daylight, a

32

Nanolens Window Coatings for Daylighting  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Nanolens Window Coatings for Nanolens Window Coatings for Daylighting Kyle J. Alvine Pacific Northwest National Laboratory Kyle.alvine@pnnl.gov / (509) - 372 - 4475 April 4 th , 2013 Demonstration of the effect To develop a novel, low-cost window coating to double daylight penetration to offset lighting energy use 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: PNNL is developing a novel, low-cost window coating to redirect daylight deeper into buildings to significantly offset lighting energy.

33

Nanolens Window Coatings for Daylighting  

Broader source: Energy.gov (indexed) [DOE]

Nanolens Window Coatings for Nanolens Window Coatings for Daylighting Kyle J. Alvine Pacific Northwest National Laboratory Kyle.alvine@pnnl.gov / (509) - 372 - 4475 April 4 th , 2013 Demonstration of the effect To develop a novel, low-cost window coating to double daylight penetration to offset lighting energy use 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: PNNL is developing a novel, low-cost window coating to redirect daylight deeper into buildings to significantly offset lighting energy.

34

New and Underutilized Technology: Integrated Daylighting Systems |  

Broader source: Energy.gov (indexed) [DOE]

Integrated Daylighting Systems Integrated Daylighting Systems New and Underutilized Technology: Integrated Daylighting Systems October 4, 2013 - 4:56pm Addthis The following information outlines key deployment considerations for integrated daylighting systems within the Federal sector. Benefits Integrated daylighting systems can be combined with electronic dimmable fluorescent ballasts, photo sensors, and occupancy sensors where appropriate. Network components, workstation controls, and building management options can also be integrated to provide significant savings on applied systems. Application Integrated daylighting systems are applicable in perimeter and interior spaces with daylight exposure via windows and skylights. Key Factors for Deployment Acceptable levels of daylight are required and must be factored into

35

Advanced fenestration systems for improved daylight performance  

E-Print Network [OSTI]

daylighting designs is a lack of systems perspective that accounts for, and provides an integrated solution

Selkowitz, S.; Lee, E.S.

1998-01-01T23:59:59.000Z

36

Tips for Daylighting with Windows  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

These guidelines provide an integrated approach to the cost-effective design of perimeter zones in new commercial buildings. They function as a quick reference for designers through a set of easy steps and rules-of-thumb, emphasizing "how-to" practical details. These guidelines provide an integrated approach to the cost-effective design of perimeter zones in new commercial buildings. They function as a quick reference for designers through a set of easy steps and rules-of-thumb, emphasizing "how-to" practical details. This research was funded by the California Institute for Energy Efficiency (CIEE), a research unit of the University of California. Additional related support was provided by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Building Technology, State and Community Programs, Office of Building Systems of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098. Browse the document online Download the document in PDF form To obtain information about (1) this project, (2) updates to this document, or (3) future daylighting tools - or to submit comments about this site - contact Eleanor Lee at eslee@lbl.gov.

37

daylight | OpenEI Community  

Open Energy Info (EERE)

daylight daylight Home Dc's picture Submitted by Dc(15) Member 15 November, 2013 - 13:26 Living Walls ancient building system architect biomimicry building technology cooling cu daylight design problem energy use engineer fred andreas geothermal green building heat transfer heating living walls metabolic adjustment net zero pre-electricity Renewable Energy Solar university of colorado utility grid Wind Much of the discussion surrounding green buildings centers around reducing energy use. The term net zero is the platinum standard for green buildings, meaning the building in question does not take any more energy from the utility grid than it produces using renewable energy resources, such as solar, wind, or geothermal installations (and sometimes these renewable energy resources actually feed energy back to the utility grid).

38

Energy 101: Daylighting | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Daylighting Daylighting Energy 101: Daylighting Addthis Below is the text version for the Energy 101: Daylighting video. The video opens with "Energy 101: Daylighting." This is followed by various shots of building interiors with many windows and large amounts of natural lighting. Okay, so we all know that windows can provide a great view, right? But if they're placed in the right locations, they can also save you money on your utility bill...and they can help keep you more comfortable at home or work. A montage of building interiors and exteriors appears onscreen, with windows filling the interior spaces with natural light. It's called daylighting, and it takes a simple concept to a new level. Daylighting combines lots of things-everything from the type of window,

39

The New York Times Headquarters Daylighting Mockup: Monitored Performance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

The New York Times Headquarters Daylighting Mockup: Monitored Performance The New York Times Headquarters Daylighting Mockup: Monitored Performance of the Daylighting Control System Title The New York Times Headquarters Daylighting Mockup: Monitored Performance of the Daylighting Control System Publication Type Journal Article LBNL Report Number LBNL-56979 Year of Publication 2006 Authors Lee, Eleanor S., and Stephen E. Selkowitz Journal Energy & Buildings Volume 38 Pagination 914-929 Call Number LBNL-56979 Abstract A nine-month monitored field study of the performance of automated roller shades and daylighting controls was conducted in a 401 m2 unoccupied, furnished daylighting mockup. The mockup mimicked the southwest corner of a new 110 km2 commercial building in New York, New York, where The New York Times will be the major tenant. This paper focuses on evaluating the performance of two daylighting control systems installed in separate areas of an open plan office with 1.2-m high workstation partitions: 1) Area A had 0-10 V dimmable ballasts with an open-loop proportional control system and an automated shade controlled to reduce window glare and increase daylight, and 2) Area B had digital addressable lighting interface (DALI) ballasts with a closed-loop integral reset control system and an automated shade controlled to block direct sun. Daylighting control system performance and lighting energy use were monitored. The daylighting control systems demonstrated very reliable performance after they were commissioned properly. Work plane illuminance levels were maintained above 90% of the maximum fluorescent illuminance level for 99.9+/-0.5% and 97.9+/-6.1% of the day on average over the monitored period, respectively, in Areas A and B. Daily lighting energy use savings were significant in both Areas over the equinox-to-equinox period compared to a non-daylit reference case. At 3.35 m from the window, 30% average savings were achieved with a sidelit west-facing condition in Area A while 50-60% were achieved with a bilateral daylit south-facing condition in Area B. At 4.57-9.14 m from the window, 5-10% and 25-40% savings were achieved in Areas A and B, respectively. Average savings for the 7-m deep dimming zone were 20-23% and 52-59% for Areas A and B, respectively, depending on the lighting schedule. The large savings and good reliability can be attributed to the automatic management of the interior shades. The DALI-based system exhibited faulty behavior that remains unexplained, but operational errors are expected to be resolved as DALI products reach full maturity. The building owner received very competitive bids ($30-75 US/DALI ballast) and was able to justify use of the daylighting control system based on operational cost savings and increased amenity. Additional energy savings due to reduced solar and lighting heat gains were not quantified but will add to the total operational cost savings.

40

Energy 101: Daylighting | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Energy 101: Daylighting Energy 101: Daylighting Energy 101: Daylighting May 31, 2011 - 6:10pm Addthis Liisa O'Neill Liisa O'Neill Former New Media Specialist, Office of Public Affairs What does this mean for me? Daylighting maximizes the benefits of natural lighting and temperature regulation -- reducing lighting, heating and cooling costs for homeowners and businesses. Daylighting takes a simple concept to a new money-saving level in this edition of Energy 101. Through strategic placement of windows and skylights, daylighting maximizes the benefits of natural lighting and temperature regulation -- reducing lighting, heating and cooling costs for homeowners and businesses. This home energy efficiency strategy takes into account everything from the type of window to placement and interior design to help control how the

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Energy 101: Daylighting | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Energy 101: Daylighting Energy 101: Daylighting Energy 101: Daylighting May 31, 2011 - 6:10pm Addthis Liisa O'Neill Liisa O'Neill Former New Media Specialist, Office of Public Affairs What does this mean for me? Daylighting maximizes the benefits of natural lighting and temperature regulation -- reducing lighting, heating and cooling costs for homeowners and businesses. Daylighting takes a simple concept to a new money-saving level in this edition of Energy 101. Through strategic placement of windows and skylights, daylighting maximizes the benefits of natural lighting and temperature regulation -- reducing lighting, heating and cooling costs for homeowners and businesses. This home energy efficiency strategy takes into account everything from the type of window to placement and interior design to help control how the

42

Energy 101: Daylighting | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Energy 101: Daylighting Energy 101: Daylighting Energy 101: Daylighting May 31, 2011 - 6:10pm Addthis Liisa O'Neill Liisa O'Neill Former New Media Specialist, Office of Public Affairs What does this mean for me? Daylighting maximizes the benefits of natural lighting and temperature regulation -- reducing lighting, heating and cooling costs for homeowners and businesses. Daylighting takes a simple concept to a new money-saving level in this edition of Energy 101. Through strategic placement of windows and skylights, daylighting maximizes the benefits of natural lighting and temperature regulation -- reducing lighting, heating and cooling costs for homeowners and businesses. This home energy efficiency strategy takes into account everything from the type of window to placement and interior design to help control how the

43

List of Daylighting Incentives | Open Energy Information  

Open Energy Info (EERE)

Daylighting Incentives Daylighting Incentives Jump to: navigation, search The following contains the list of 166 Daylighting Incentives. CSV (rows 1 - 166) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active APS - Renewable Energy Incentive Program (Arizona) Utility Rebate Program Arizona Commercial Residential Anaerobic Digestion Biomass Daylighting Geothermal Electric Ground Source Heat Pumps Landfill Gas Other Distributed Generation Technologies Photovoltaics Small Hydroelectric Solar Pool Heating Solar Space Heat Solar Thermal Process Heat Solar Water Heat Wind energy Yes Alternative and Clean Energy State Grant Program (Pennsylvania) State Grant Program Pennsylvania Commercial Industrial Local Government Multi-Family Residential Nonprofit Schools Boilers

44

Solar Day-Lighting Using Optical Fibers  

Science Journals Connector (OSTI)

Green lighting alternatives can substantially reduce electricity consumption. Solar day-lighting system, by transporting the concentrated sunlight through optical fibers, has been...

Kumar, Naveen; Patil, Sanket

45

Heliostat design for the daylighting system  

Science Journals Connector (OSTI)

The daylighting system is designed to guide sunlight into buildings for illumination. It has the best illumination performance when sunlight vertically impinges on the collector of the...

Chang, Chih-Hung; Hsiso, Horng-Ching; Chang, Cheng-Ming; Wang, Chen-You; Lin, Tzung-Han; Chen, Yi-Yung; Lai, Yi-Lung; Yen, Cho-Jung; Chen, Kuan-Yu; Whang, Allen Jong-Woei

2014-01-01T23:59:59.000Z

46

Automating the Selection of Fenestration Systems to Best Meet Daylighting  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Automating the Selection of Fenestration Systems to Best Meet Daylighting Automating the Selection of Fenestration Systems to Best Meet Daylighting Performance Goals Title Automating the Selection of Fenestration Systems to Best Meet Daylighting Performance Goals Publication Type Conference Paper LBNL Report Number LBNL-53003 Year of Publication 2003 Authors Fernandes, Luis L., and Konstantinos M. Papamichael Conference Name 2003 International Building Performance Simulation Association Conference Date Published 02/2003 Conference Location Eindhoven, Netherlands Call Number LBNL-53003 Abstract Traditional selection of fenestration systems follows a trial-and-error approach, i.e., iterative selection of fenestration systems and evaluation of their performance through the use of simulation tools and techniques. This paper is about the development of a new method, which inverts traditional practice, i.e., aims at automated selection of fenestration systems that best meet specific lighting performance goals. The new method is based on manipulation of matrices that represent the optical properties of fenestration systems, the propagation of light in interior spaces, and the outdoors luminous conditions. The method follows two steps: 1) the determination of the luminous flux distribution originating from the location of the fenestration that best meets the desired lighting performance goals and 2) the selection of the fenestration system that comes closer to producing the desired flux distribution from the outdoor daylight distribution.

47

Energy 101: Daylighting | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Daylighting Daylighting Energy 101: Daylighting Addthis Description Daylighting-the use of windows or skylights for natural lighting and temperature regulation-is one building strategy that can save money for homeowners and businesses. Highly efficient, strategically placed windows maximize the use of natural daylight in a building, lowering the need for artificial lighting without causing heating or cooling problems. Duration 2:44 Topic Energy Efficiency Heating & Cooling Home Weatherization Home Energy Audits Construction Commercial Lighting Credit Energy Department Video ANNOUNCER: OK, so we all know that windows can provide a great view, right? But if they're placed in the right locations, they can also save you money on your utility bill, and they can help keep you more comfortable

48

Effect of daylighting on energy consumption and daylight quality in an existing elementary school  

E-Print Network [OSTI]

created for the base case and all proposed daylighting designs for building energy performance evaluation using the DOE-2 building energy simulation program. Daylight factors from the actual spaces, physical model measurements, and computer simulation... outputs were studied for trends iv in interior daylight illuminance levels. Annual energy consumption analyses were performed using DOE-2 and involved heating, cooling, and electrical energy use comparisons of all proposed designs with the base case...

Atre, Umesh Vinayak

2005-08-29T23:59:59.000Z

49

Thermodynamics of daylight-pumped lasers  

Science Journals Connector (OSTI)

We cast the problem of very-low-threshold, daylight-pumped lasers in a general thermodynamic framework. We calculate that the requirements to reach threshold are that the Stokes shift...

Roxlo, C B; Yablonovitch, Eli

1983-01-01T23:59:59.000Z

50

Advanced Facades, Daylighting, and Complex Fenestration Systems  

Broader source: Energy.gov (indexed) [DOE]

Facades, Daylighting, and Facades, Daylighting, and Complex Fenestration Systems Eleanor Lee Lawrence Berkeley National Laboratory eslee@lbl.gov 510-486-4997 April 5, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: In order to reach BTO's aggressive 50% energy savings goal by 2030, innovative façade systems must minimize both lighting and HVAC energy end use consumption more optimally while addressing occupant comfort and amenity requirements.

51

Cooling Energy and Cost Savings with Daylighting  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Cooling Energy and Cost Savings with Daylighting Cooling Energy and Cost Savings with Daylighting Title Cooling Energy and Cost Savings with Daylighting Publication Type Conference Paper LBNL Report Number LBL-19734 Year of Publication 1985 Authors Arasteh, Dariush K., Russell Johnson, Stephen E. Selkowitz, and Deborah J. Connell Conference Name 2nd Annual Symposium on Improving Building Energy Efficiency in Hot and Humid Climates Date Published 09/1985 Conference Location Texas A&M University Call Number LBL-19734 Abstract Fenestration performance in nonresidentialsbuildings in hot climates is often a large coolingsload liability. Proper fenestration design andsthe use of daylight-responsive dimming controls onselectric lights can, in addition to drasticallysreducing lighting energy, lower cooling loads,speak electrical demand, operating costs, chillerssizes, and first costs. Using the building energyssimulation programs DOE-2.1B and DOE-2.1C , wesfirst discuss lighting energy savings from daylighting.sThe effects of fenestration parametersson cooling loads, total energy use, peak demand,schiller sizes, and initial and operating costs aresalso discussed. The impact of daylighting, asscompared to electric lighting, on cooling requirementssis discussed as a function of glazingscharacteristics, location, and shading systems.

52

AEDG Implementation Recommendations: Daylighting Controls | Building Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Controls Controls The Advanced Energy Design Guide (AEDG) for Small Office Buildings, 30% series, seeks to achieve 30% savings over ASHRAE Standard 90.1-1999. This guide focuses on improvements to small office buildings, less than 20,000ft2. The recommendations in this article are adapted from the implementation section of the guide and focus on expanded recommendations for daylighting controls; photo sensor placement; calibration and commissioning; daylight levels. Publication Date: Wednesday, May 13, 2009 air_daylighting_controls.pdf Document Details Affiliation: DOE BECP Focus: Compliance Building Type: Commercial Code Referenced: ASHRAE Standard 90.1-1999 Document type: AEDG Implementation Recommendations Target Audience: Architect/Designer Builder Contractor Engineer

53

Singapore's Zero-Energy Building's daylight monitoring system  

E-Print Network [OSTI]

Daylight Illuminance [12] (UGI) relates the illuminance onin three metrics for the UGI, defining exceeding (>2000lx),

Grobe, Lars

2010-01-01T23:59:59.000Z

54

Does Daylight Savings Time Affect Traffic Accidents?  

E-Print Network [OSTI]

This paper studies the effect of changes in accident pattern due to Daylight Savings Time (DST). The extension of the DST in 2007 provides a natural experiment to determine whether the number of traffic accidents is affected by shifts in hours...

Deen, Sophia 1988-

2012-04-20T23:59:59.000Z

55

Acceleration of the matrix multiplication of Radiance three phase daylighting simulations with parallel computing on heterogeneous hardware of personal computer  

SciTech Connect (OSTI)

Building designers are increasingly relying on complex fenestration systems to reduce energy consumed for lighting and HVAC in low energy buildings. Radiance, a lighting simulation program, has been used to conduct daylighting simulations for complex fenestration systems. Depending on the configurations, the simulation can take hours or even days using a personal computer. This paper describes how to accelerate the matrix multiplication portion of a Radiance three-phase daylight simulation by conducting parallel computing on heterogeneous hardware of a personal computer. The algorithm was optimized and the computational part was implemented in parallel using OpenCL. The speed of new approach was evaluated using various daylighting simulation cases on a multicore central processing unit and a graphics processing unit. Based on the measurements and analysis of the time usage for the Radiance daylighting simulation, further speedups can be achieved by using fast I/O devices and storing the data in a binary format.

University of Miami; Zuo, Wangda; McNeil, Andrew; Wetter, Michael; Lee, Eleanor S.

2013-04-30T23:59:59.000Z

56

SunCast: Fine-grained Prediction of Natural Sunlight Levels for Improved Daylight Harvesting  

E-Print Network [OSTI]

Artificial lighting is the single largest energy consumer in commercial buildings, accounting for 26% of their total energy usage [1]. Daylight harvesting is the approach of us- ing natural sunlight inside promise for commercial buildings because they are Permission to make digital or hard copies of all or part

Whitehouse, Kamin

57

Daylighting simulation: methods, algorithms, and resources  

SciTech Connect (OSTI)

This document presents work conducted as part of Subtask C, ''Daylighting Design Tools'', Subgroup C2, ''New Daylight Algorithms'', of the IEA SHC Task 21 and the ECBCS Program Annex 29 ''Daylight in Buildings''. The search for and collection of daylighting analysis methods and algorithms led to two important observations. First, there is a wide range of needs for different types of methods to produce a complete analysis tool. These include: Geometry; Light modeling; Characterization of the natural illumination resource; Materials and components properties, representations; and Usability issues (interfaces, interoperability, representation of analysis results, etc). Second, very advantageously, there have been rapid advances in many basic methods in these areas, due to other forces. They are in part driven by: The commercial computer graphics community (commerce, entertainment); The lighting industry; Architectural rendering and visualization for projects; and Academia: Course materials, research. This has led to a very rich set of information resources that have direct applicability to the small daylighting analysis community. Furthermore, much of this information is in fact available online. Because much of the information about methods and algorithms is now online, an innovative reporting strategy was used: the core formats are electronic, and used to produce a printed form only secondarily. The electronic forms include both online WWW pages and a downloadable .PDF file with the same appearance and content. Both electronic forms include live primary and indirect links to actual information sources on the WWW. In most cases, little additional commentary is provided regarding the information links or citations that are provided. This in turn allows the report to be very concise. The links are expected speak for themselves. The report consists of only about 10+ pages, with about 100+ primary links, but with potentially thousands of indirect links. For purposes of the printed version, a list of the links is explicitly provided. This document exists in HTML form at the URL address: http://eande.lbl.gov/Task21/dlalgorithms.html. An equivalent downloadable PDF version, also with live links, at the URL address: http://eande.lbl.gov/Task21/dlalgorithms.pdf. A printed report can be derived directly from either of the electronic versions by simply printing either of them. In addition to the live links in the electronic forms, all report forms, electronic and paper, also have explicitly listed link addresses so that they can be followed up or referenced manually.

Carroll, William L.

1999-12-01T23:59:59.000Z

58

OpenStudio Enhancements for Whole-Building Daylighting, Airflow...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Enhancements for Whole-Building Daylighting, Airflow, and Energy Modeling Leveraging Interoperable Building Information Modeling Data - 2014 BTO Peer Review OpenStudio Enhancements...

59

Assessing the Feasibility of Creek Daylighting in San Francisco, Part I: A Synthesis of Lessons Learned from Existing Urban Daylighting Projects  

E-Print Network [OSTI]

daylighting can be cost- comparable with conventional, infrastructure- and material-intensive engineering solutions

Smith, Brooke Ray

2007-01-01T23:59:59.000Z

60

High-Efficiency Solar Cogeneration with TPV & Fiber-Optic Daylighting...  

Broader source: Energy.gov (indexed) [DOE]

High-Efficiency Solar Cogeneration with TPV & Fiber-Optic Daylighting High-Efficiency Solar Cogeneration with TPV & Fiber-Optic Daylighting Lead Performer: Creative Light Source,...

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Lighting and Daylighting Products and Services | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Lighting and Daylighting Products and Services Lighting and Daylighting Products and Services Lighting and Daylighting Products and Services July 29, 2012 - 5:06pm Addthis Lighting and Daylighting Products and Services Use the following links to get product information and locate professional services for lighting and daylighting. Product Information Advanced Lighting Package ENERGY STAR® Information on the ENERGY STAR Advanced Lighting Project, which allows homeowners to upgrade their light fixtures to more energy efficient products. Energy-efficient Lights ENERGY STAR® Information on the benefits of ENERGY STAR qualified light bulbs. Fixtures Guide ENERGY STAR® Examples and pictures of ENERGY STAR qualified light fixtures. How to Select Residential LED Under-cabinet Lighting (PDF) Alliance for Solid-State Illumination Systems and Technologies

62

Lighting and Daylighting Products and Services | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Lighting and Daylighting Products and Services Lighting and Daylighting Products and Services Lighting and Daylighting Products and Services July 29, 2012 - 5:06pm Addthis Lighting and Daylighting Products and Services Use the following links to get product information and locate professional services for lighting and daylighting. Product Information Advanced Lighting Package ENERGY STAR® Information on the ENERGY STAR Advanced Lighting Project, which allows homeowners to upgrade their light fixtures to more energy efficient products. Energy-efficient Lights ENERGY STAR® Information on the benefits of ENERGY STAR qualified light bulbs. Fixtures Guide ENERGY STAR® Examples and pictures of ENERGY STAR qualified light fixtures. How to Select Residential LED Under-cabinet Lighting (PDF) Alliance for Solid-State Illumination Systems and Technologies

63

Lighting system combining daylight concentrators and an artificial source  

DOE Patents [OSTI]

A combined lighting system for a building interior includes a stack of luminescent solar concentrators (LSC), an optical conduit made of preferably optical fibers for transmitting daylight from the LSC stack, a collimating lens set at an angle, a fixture for receiving the daylight at one end and for distributing the daylight as illumination inside the building, an artificial light source at the other end of the fixture for directing artifical light into the fixture for distribution as illumination inside the building, an automatic dimmer/brightener for the artificial light source, and a daylight sensor positioned near to the LSC stack for controlling the automatic dimmer/brightener in response to the daylight sensed. The system also has a reflector positioned behind the artificial light source and a fan for exhausting heated air out of the fixture during summer and for forcing heated air into the fixture for passage into the building interior during winter.

Bornstein, Jonathan G. (Miami, FL); Friedman, Peter S. (Toledo, OH)

1985-01-01T23:59:59.000Z

64

Design and Evaluation of Daylighting Applications of Holographic Glazings  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Design and Evaluation of Daylighting Applications of Holographic Glazings Design and Evaluation of Daylighting Applications of Holographic Glazings Title Design and Evaluation of Daylighting Applications of Holographic Glazings Publication Type Report LBNL Report Number LBNL-44167 Year of Publication 1996 Authors Papamichael, Konstantinos M., Charles K. Ehrlich, and Gregory J. Ward Call Number LBNL-44167 Abstract When combined with appropriate electric lighting dimming controls, the use of daylight for ambient and task illumination can significantly reduce energy requirements in commercial buildings. While skylights can effectively illuminate any part of one-story buildings, conventional side windows can illuminate only a 15 ft - 20 ft (4.6 m - 6.1 m) depth of the building perimeter. Even so, the overall efficacy of daylight is limited, because side windows produce uneven distributions of daylight. Achieving adequate illumination at distances further away from the window results in excessive illumination near the window, which increases cooling loads from the associated solar heat gain. As a result, the use of larger apertures and/or higher transmittance glazings, to introduce daylight deeper than 15 ft - 20 ft (4.6 m - 6.1 m), may prove ineffective with respect to saving energy, because cooling load penalties may exceed the electric lighting savings.

65

Reduce Threshold for Toplit Daylighting Area  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Supporting analysis for proposed Supporting analysis for proposed changes to the commercial provisions of the 2012 IECC: Reduce Threshold for Toplit Daylighting Area R Hart R Athalye Pacific Northwest National Laboratory December 2012 2 Proposal Description This proposal modifies Section C402.3.2 of the 2012 IECC for the 2015 version. It reduces the area threshold for skylight daylit zones from 10,000 square feet to 2,000 square feet. It maintains 15 foot ceiling height requirement and the exception for climate zones 6 through 8. Energy Impact Based on average national energy prices 1 of $0.99 per therm and $0.1032 per kWh, the net savings are calculated with EnergyPlus(tm) 2 from whole building energy savings that result from reduced lighting, and depending on climate zone, increased or decreased heating and cooling.

66

Daylighting performance of electrochromic glazing system  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

52E 52E Lighting energy savings potential of split- pane electrochromic windows controlled for daylighting with visual comfort L.L. Fernandes Lawrence Berkeley National Laboratory E.S. Lee Lawrence Berkeley National Laboratory G. Ward Anyhere Software Windows and Envelope Materials Group Building Technology and Urban Systems Department Environmental Energy Technologies Division February 2013 Published in Energy and Buildings 61 (2013) 8-20 10.1016/j.enbuild.2012.10.057 ! DISCLAIMER This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of

67

Using Daylight to Light the Access Zone of Road Tunnels  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Using Daylight to Light the Access Zone of Road Tunnels Using Daylight to Light the Access Zone of Road Tunnels Speaker(s): Eliyahu Ne'eman Date: March 4, 2003 - 12:00pm Location: Bldg. 90 Lighting guides for roadway tunnels specify relatively high luminances for the "access zone" into the tunnel. They are needed to allow the eyes of the driver sufficient time to adapt during the short period of the transition from the outdoor natural daylight levels to the fairly low luminances along the main length of the tunnel. Usually, the necessary high luminances are provided by rows of costly luminaries which consume a lot of electricity during peak use periods and need a good deal of maintenance. To save some electric power, controls are used to dim the lighting on cloudy hours. Daylight has been used for the access zone in several tunnels around the

68

Evaluating daylighting potential and energy efficiency in a classroom building  

Science Journals Connector (OSTI)

In this paper we analyze the possibility of using daylight as the main source of light for learning and teaching activities in a classroom building of the Universidade Tecnolgica Federal do Paran in Curitiba Brazil. Beginning with a survey on light bulb and luminaire types used in the building and on the potential of daylighting in such environments six different classroom types with different solar orientations were selected for analysis. The research methods included the estimation of daylighting potential from obtained daylight coefficients (DCs) for periods of the year and sky conditions other than those of the onsite measurements; the evaluation of conformity of the lighting system to the Brazilian RTQ Code (Regulamento Tcnico de Qualidade) an energy consumption rating system aimed at reducing electric energy consumption in office buildings; the estimation of electric energy demand for a combined use of daylighting and lighting system; the proposal of an efficient lighting system; and cost assessment using payback analysis. Results suggest energy savings of up to 94% when integrating daylight with the artificial lighting system a payback within the range of 2260 months for a complete substitution of the existing lighting system for a more efficient one.

E. L. Krger; S. D. Fonseca

2011-01-01T23:59:59.000Z

69

International Symposium on Daylighting Buildings (IEA SHC TASK 31) Integrating Automated Shading and Smart Glazings with Daylight  

E-Print Network [OSTI]

technologies on the market today. The challenge of controlling solar gain and managing daylight, view and glare systems and in the other we explore the use of electrochromic glazings. Each study involves both

70

Advanced Optical Materials for Daylighting in Office Buildings  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Advanced Optical Materials for Daylighting in Office Buildings Advanced Optical Materials for Daylighting in Office Buildings Title Advanced Optical Materials for Daylighting in Office Buildings Publication Type Conference Paper LBNL Report Number LBL-20080 Year of Publication 1985 Authors Johnson, Russell, Deborah J. Connell, Stephen E. Selkowitz, and Dariush K. Arasteh Conference Name 10th Passive Solar Conference Date Published 10/1985 Conference Location Raleigh, NC Call Number LBL-20080 Abstract The use of daylighting to supplant electric light in office buildings offers substantial energy savings and peak electrical demand reductions. The benefits from electric lighting reductions can, however, be easily offset by increased cooling loads if solar gains are not controlled.sThe use of advanced glazing materials having optical switching propertiesscan facilitate solar control and, with proper design, maximize energy and cost benefits. The potential net annual performance of these materials, based on simulation studies using DOE-2.1C, are discussed insthis paper. Actively and passively controlled response functions aresanalyzed for the cooling-load-dominated climate of Lake Charles. The effects of advanced materials on net annual energy consumption, peak electrical demand, and chiller size are compared with those of conventional materials. The results demonstrate the importance of operable solar control to achieve energy-effective daylighting design. Advanced optical materials that provide the necessary level of control are shown to minimize peak electrical demand and electricity consumption.

71

Daylighter Daily Solar Roof Light | Open Energy Information  

Open Energy Info (EERE)

Daylighter Daily Solar Roof Light Daylighter Daily Solar Roof Light Jump to: navigation, search Name Daylighter Daily Solar Roof Light Address 1991 Crocker Road, Suite 600 Place Cleveland, Ohio Zip 44145 Sector Solar Product Installation; Manufacturing Phone number 440-892-3312 Website http://www.SolarLightisFree.co Coordinates 41.4648875°, -81.9506519° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.4648875,"lon":-81.9506519,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

72

Top 8 Things You Didn't Know About Daylight Saving Time | Department...  

Broader source: Energy.gov (indexed) [DOE]

to get the British parliament to pass a Daylight Saving Bill in 1908. In the end, Germany was the first country to implement Daylight Saving Time in 1916 to conserve resources...

73

Graphical Representation of Climate-Based Daylight Performance to Support Architectural Design  

E-Print Network [OSTI]

Many conventional daylighting design tools are limited in that each simulation represents only one time of year and time of day (or a single, theoretical overcast sky condition). Since daylight is so variable due to the ...

Kleindienst, Sin

74

Lighting energy savings potential of split-pane electrochromic windows controlled for daylighting with visual comfort  

E-Print Network [OSTI]

Energy Performance of Electrochromic Windows Controlled forenergy performance of electrochromic windows. Proceedingssignal for daylight (electrochromic window, no overhang).

Fernandes, Luis

2014-01-01T23:59:59.000Z

75

Design Approaches to Field-Programmable Analog Integrated Circuits  

Science Journals Connector (OSTI)

The drive towards shorter design cycles for analog integrated circuits has given impetus to several developments in the area of Field-Programmable Analog Arrays (FPAAs). Various approaches have been taken in implementing structural and parametric programmability ... Keywords: FPAA, FPGA, FPMA, IC, analog CAD, field-programmable, mixed-signal IC, programmable analog

Dean R. DMello; P. Glenn Gulak

1998-09-01T23:59:59.000Z

76

Pairs Emission in a Uniform Background Field: an Algebraic Approach  

E-Print Network [OSTI]

A fully algebraic general approach is developed to treat the pairs emission and absorption in the presence of some uniform external background field. In particular, it is shown that the pairs production and annihilation operators, together with the pairs number operator, do actually fulfill the SU(2) functional Lie algebra. As an example of application, the celebrated Schwinger formula is consistently and nicely recovered, within this novel approach, for a Dirac spinor field in the presence of a constant and homogeneous electric field in four spacetime dimensions.

Roberto Soldati

2011-06-23T23:59:59.000Z

77

Top 8 Things You Didn't Know About Daylight Saving Time | Department of  

Broader source: Energy.gov (indexed) [DOE]

Top 8 Things You Didn't Know About Daylight Saving Time Top 8 Things You Didn't Know About Daylight Saving Time Top 8 Things You Didn't Know About Daylight Saving Time October 30, 2013 - 12:36pm Addthis This Sunday, people across the country will set their clocks back an hour, marking an end to Daylight Saving Time. | Photo courtesy of iStock Photo, WoodyUpstate. This Sunday, people across the country will set their clocks back an hour, marking an end to Daylight Saving Time. | Photo courtesy of iStock Photo, WoodyUpstate. Rebecca Matulka Rebecca Matulka Digital Communications Specialist, Office of Public Affairs Looking for Energy-Saving Tips? Check out our lighting page to learn about ways to save electricity. Learn how to incorporate daylighting into your home. For more ways to save, visit Energy Saver. This article is part of the Energy.gov series highlighting the "Top

78

Delight2 Daylighting Analysis in Energy Plus: Integration and Preliminary User Results  

E-Print Network [OSTI]

solution to the issue of accounting for solar/thermal influences that will likely change as techniques analogous to the daylighting

Carroll, William L.; Hitchcock, Robert J.

2005-01-01T23:59:59.000Z

79

LBNL Windows & Daylighting Software -- WINDOW Documentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Release Notes Release Notes Updated: 10/29/12 COMFEN 4.0 Release Notes History of COMFEN 3.1 Releases New Features Natural Ventilation Model COMFEN now has the ability to model natural ventilation as a replacement for a mechanical cooling system. Click here for more details. Cost Data COMFEN now has a simple Cost module, with default costs that can be over-ridden with user data. Click here for more details. Radiance Rendering Additions There are additional Radiance Renderings available, including Illuminance Maps. Click here for more details. Program Changes Updating Database from COMFEN 4.0 to 4.1 COMFEN will automatically update your 4.0 database to be compatible with the 4.1 database structure the first time you open a 4.0 database in version 4.1. This includes adding all the cost fields to the new database, as well as default cost data. If you have any problems with updating a COMFEN 4.0 database to 4.1, please email COMFENHelp@lbl.gov

80

Segmentation Conditional Random Fields (SCRFs): A New Approach for  

E-Print Network [OSTI]

Segmentation Conditional Random Fields (SCRFs): A New Approach for Protein Fold Recognition Yan Liu, University of Pittsburgh, PA, USA vanathi@cbmi.pitt.edu Abstract. Protein fold recognition is an important.e. the supersecondary structures or protein folds. There has been significant work on predicting some well-defined types

Carbonell, Jaime

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Daylighting Analysis through Scale Model, Full Scale Measurements and Computer Analysis for a Texas A&M University Campus Building  

E-Print Network [OSTI]

In the first part of this study, daylighting levles in an actualy classroom are compared to scale model measurements and to computer program predictions. Secondly, the daylighting effects in the building atrium are examined through the studies...

Kim, K. S.; Boyer, L. L.; Degelman, L. O.

1985-01-01T23:59:59.000Z

82

Daylight in faade renewal : using new metrics to inform the retrofitting of aging modern-ear faade types  

E-Print Network [OSTI]

New methods for quantifying daylight are increasingly accessible to designers and planners. While these methods have enabled new building facades to better balance the admission of daylight with the maintenance of thermal ...

Rice, Edward Oren

2006-01-01T23:59:59.000Z

83

Walking on daylight : the application of translucent floor systems as a means of achieving natural daylighting in mid and low rise architecture  

E-Print Network [OSTI]

This thesis is concerned with the introduction of quality daylight to buildings by means of translucency in the horizontal planes or floors within the building. Since people began to build, the concept of translucency in ...

Widder, James

1985-01-01T23:59:59.000Z

84

DOES DAYLIGHT SAVING TIME SAVE ENERGY? EVIDENCE FROM A NATURAL EXPERIMENT IN INDIANA  

E-Print Network [OSTI]

DOES DAYLIGHT SAVING TIME SAVE ENERGY? EVIDENCE FROM A NATURAL EXPERIMENT IN INDIANA Matthew J prompted temporary changes, when the Emergency Daylight Saving Time Energy Conservation Act of 1973 imposed extension to DST focused on the potential energy savings. While politi- cians argued that each additional

Kotchen, Matthew J.

85

How Do You Use Daylighting While Reducing Excess Heat from Windows? |  

Broader source: Energy.gov (indexed) [DOE]

Do You Use Daylighting While Reducing Excess Heat from Windows? Do You Use Daylighting While Reducing Excess Heat from Windows? How Do You Use Daylighting While Reducing Excess Heat from Windows? June 16, 2011 - 7:30am Addthis On Monday, Elizabeth discussed her south-facing windows and her difficulties balancing the nice daylighting advantages with the excess heat that can come through these windows in the summer. How do you use daylighting while reducing excess heat from windows? Each Thursday, you have the chance to share your thoughts on a question about energy efficiency or renewable energy for consumers. E-mail your responses to the Energy Saver team at consumer.webmaster@nrel.gov. Addthis Related Articles Fighting with South-Facing Windows This Month on Energy Savers: June 2011 Simple and inexpensive actions can help you save energy and money during the warm spring and summer months. | Photo courtesy of iStockphoto.com/eyedias.

86

Daylighting Requirements in the National Building Energy Codes Theyre Here!  

SciTech Connect (OSTI)

Requirements for the control of electric lighting in daylighted areas have historically been avoided in the national building energy codes. This is potentially a rich source of energy savings but as most lighting designers and architects know, daylighting design is not simple! The sheer complication of daylighting design makes crafting daylighting control requirements that could be applied generically in a national energy code a difficult task. However, that is currently changing. The Department of Energys (DOE) Building Energy Codes Program (BECP) managed by Pacific Northwest National Laboratory (PNNL) has been supporting the ANSI/ASHRAE/IESNA 90.1 committee in developing improvements to the 90.1 Standard. With subcontract support, the 90.1 Lighting Subcommittee has championed the incorporation of daylighting design and control requirements for the upcoming 2010 version of the nationally available ANSI/ASHRAE/IESNA Standard 90.1 for commercial building energy use.

Richman, Eric E.

2008-06-30T23:59:59.000Z

87

Energy efficient commercial buildings : a study of natural daylighting in the context of adaptive reuse  

E-Print Network [OSTI]

Daylighting is a powerful design element which can have a dramatic impact on people's perception of space, physical and psychological well-being as well as a building's annual and daily energy requirements. Understanding ...

Crowley, John Stephen

1982-01-01T23:59:59.000Z

88

Energy, Shading and Daylighting Analysis for the Austin Bergstrom International Airport Terminal  

E-Print Network [OSTI]

Austin Airport included large glass areas for viewing arriving and departing planes, the sky, and the surrounding terrain. The glass was envisioned to provide quality natural lighting for the terminal during daylight hours in order to improve the quality...

Holder, L. M. III; Holder, L. M. IV

2002-01-01T23:59:59.000Z

89

Cooling Energy and Cost Savings with Daylighting in a Hot and Humid Climate  

E-Print Network [OSTI]

Fenestration performance in nonresidential buildings in hot climates is often a large cooling load liability. Proper fenestration design and the use of daylight-responsive dimming controls on electric lights can, in addition to drastically reducing...

Arasteh, D.; Johnson, R.; Selkowitz, S.; Connell, D.

1985-01-01T23:59:59.000Z

90

Empirical assessment of a prismatic daylight-redirecting window film in a  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Empirical assessment of a prismatic daylight-redirecting window film in a Empirical assessment of a prismatic daylight-redirecting window film in a full-scale office testbed Title Empirical assessment of a prismatic daylight-redirecting window film in a full-scale office testbed Publication Type Conference Paper LBNL Report Number LBNL-6496E Year of Publication 2013 Authors Thanachareonkit, Anothai, Eleanor S. Lee, and Andrew McNeil Conference Name Illuminating Engineering Society (IES) Annual Conference 2013 Date Published 10/2013 Conference Location Huntington Beach, California Keywords building energy efficiency., daylighting, microstructure film, prismatic film, windows Abstract Daylight redirecting systems with vertical windows have the potential to offset lighting energy use in deep perimeter zones. Microstructured prismatic window films can be manufactured using low-cost, roll-to-roll fabrication methods and adhered to the inside surface of existing windows as a retrofit measure or installed as a replacement insulating glass unit in the clerestory portion of the window wall. A clear film patterned with linear, 50-250 micrometer high, four-sided asymmetrical prisms was fabricated and installed in the south-facing, clerestory low-e, clear glazed windows of a full-scale testbed facility. Views through the film were distorted. The film was evaluated in a sunny climate over a two-year period to gauge daylighting and visual comfort performance. The daylighting aperture was small (window-to-wall ratio of 0.18) and the lower windows were blocked off to isolate the evaluation to the window film. Workplane illuminance measurements were made in the 4.6 m (15 ft) deep room furnished as a private office. Analysis of discomfort glare was conducted using high dynamic range imaging coupled with the evalglare software tool, which computes the daylight glare= probability and other metrics used to evaluate visual discomfort.

91

An Analysis of Energy Reductions from the Use of Daylighting in Low-Cost Housing  

E-Print Network [OSTI]

to preserving natural resources and contribute to a solution for the worlds energy shortage problem. 1 .2 . OBJECTIVES The primary objective of this research is to evaluate the effectiveness of several daylighting design strategies applied to low... AN ANALYSIS OF ENERGY REDUCTIONS FROM THE USE OF DAYLIGHTING IN LOW-COST HOUSING A Thesis by NAYARAT RUNGCHAREONRAT Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements...

Rungchareonrat, N.

92

Question of the Week: How Do You Feel About the Extended Daylight Saving  

Broader source: Energy.gov (indexed) [DOE]

Feel About the Extended Daylight Feel About the Extended Daylight Saving Time? Question of the Week: How Do You Feel About the Extended Daylight Saving Time? March 12, 2009 - 6:00am Addthis Have you been drinking extra coffee this week? The spring switch to Daylight Saving Time can be rough-especially for those of us who aren't morning people-but that extra time in the afternoon sun sure is nice! The change took a few people by surprise-this is only the third year that Daylight Saving Time started the second Sunday in March, rather than the first Sunday in April. The Energy Policy Act of 2005 changed the start and end dates of Daylight Saving Time in order to save energy, and DOE has found that it worked. The savings from the shift, while small percentage-wise, are enough to power about 122,000 average U.S. homes for a year. See the article in EERE

93

Design daylight availability for greenhouses using supplementary lighting  

Science Journals Connector (OSTI)

An analysis is presented of daylight availability data in terms of suitable design criteria for greenhouse supplementary lighting systems. Percentile exceedance values for the daily photosynthetically active radiation (PAR) integral are proposed as the relevant design criteria, and a method is presented for using these data to determine the target supplementary light level in a greenhouse. A large set of daily radiation data were analysed to generate percentile data for 201 locations in the USA varying in latitude from 18.4 to 71.3 and elevation from 1 to 2300m. Analyses were carried out to assess the dependence of these percentile data on site latitude and elevation, and a mathematical model was fitted to the data. Results indicate that percentile data vary negatively with latitude and positively with elevation in a manner that can be calculated using these two inputs and a percentile-related coefficient with a resulting r2 of 0.982. The strength of relationship is greatest for moderate and high percentiles, with a mean absolute error (MAE) of 2.0molm?2d?1 for percentiles of 70% and above. These results indicate that percentile exceedance data can be used as a basis for assimilative lighting system design, both for locations near areas where recorded data are available, and for locations where only latitude and elevation data are known.

Daniel Ciolkosz

2008-01-01T23:59:59.000Z

94

Dynamic daylight control system implementing thin cast arrays of polydimethylsiloxane-based millimeter-scale transparent louvers  

E-Print Network [OSTI]

with improved distribution of daylight throughout the interior space [21]. According to the US Energy of the total U.S. primary energy [7]. Furthermore, the U.S. Energy Information Ad- ministration's (USEIA has significant impact on the overall reduction of energy consumption. Daylight autonomy is a widely

Aizenberg, Joanna

95

The Role of Daylight in Achieving Ultra-Low-Energy Buildings  

Broader source: Energy.gov (indexed) [DOE]

Daylight in Achieving Daylight in Achieving Ultra-Low-Energy Buildings May 6, 2011 Neall Digert, Ph.D., MIES Vice President of Product Enterprise Solatube International, Inc. Countries around the globe are experiencing an energy crisis! The World's enormous design and construction market is focused on energy-efficient retrofit and innovative, ultra-low energy new construction. The desire to halt global warming is creating an awareness and need for sustainable buildings, communities, and societies. Energy Policy is at the forefront of governmental initiatives in nearly every country. China needs to increase its generation capacity by over 1,312 GW between 2006 and 2030. Source: International Energy Agency, "World

96

Electromagnetic field at Finite Temperature: A first order approach  

E-Print Network [OSTI]

In this work we study the electromagnetic field at Finite Temperature via the massless DKP formalism. The constraint analysis is performed and the partition function for the theory is constructed and computed. When it is specialized to the spin 1 sector we obtain the well-known result for the thermodynamic equilibrium of the electromagnetic field.

R. Casana; B. M. Pimentel; J. S. Valverde

2007-02-04T23:59:59.000Z

97

THEBLACKMARBLE In daylight our big blue marble is all land, oceans and  

E-Print Network [OSTI]

THEBLACKMARBLE #12;In daylight our big blue marble is all land, oceans and clouds. But the night ­ is electric. These views of Earth's city lights show brightly shining cities, connected by illuminated webs at night is a composite of data acquired over nine days in April and thirteen days in October 2012

98

SHORTENING DAYLIGHT PERIODS BETWEEN MAY 15 AND SEPTEMBER 12 AND THE PELT CYCLE OF THE MINK  

Science Journals Connector (OSTI)

...light on the hypophysis - Effects of long-continued night lighting' on hypophysectomized female ferrets and those with optic...elsewhere in the near future. CHEONG-YIN WONG DEPARTMENT O HORTICuLTuRE, MICHIGAN STATE COLLEGE SHORTENING DAYLIGHT PERIODS BE-TWEEN...

Thomas Hume Bissonnette; Everett Wilson

1939-05-05T23:59:59.000Z

99

New approaches to thermoelectric cooling effects in magnetic fields  

SciTech Connect (OSTI)

The authors review thermoelectric effects in a magnetic field at a phenomenological level. Discussions of the limiting performance and problems with its computation for both Peltier and Ettingshausen coolers are presented. New principles are discussed to guide the materials scientist in the search for better Ettingshausen materials, and a brief review of the subtle measurement problems is presented.

Migliori, A.; Darling, T.W.; Freibert, F.; Trugman, S.A.; Moshopoulou, E. [Los Alamos National Lab., NM (United States); Sarrao, J.L. [Florida State Univ., Tallahassee, FL (United States)

1997-08-01T23:59:59.000Z

100

New approaches to thermoelectric cooling effects in magnetic fields  

SciTech Connect (OSTI)

The authors review thermoelectric effects in a magnetic field at a phenomenological level. Discussions of the limiting performance and problems with its computation for both Peltier and Ettingshausen coolers are presented. New principles to guide the materials scientists are discussed for magnetic effects, and a brief review of the subtle measurement problems is presented.

Migliori, A.; Darling, T.W.; Freibert, F. [and others

1997-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Gauge Fields Emerging From Extra Dimensions a Born-Oppenheimer approach  

E-Print Network [OSTI]

We propose a dynamical mechanism to induce gauge fields in four dimensional space-time from a single scalar field or a spinor field in higher dimensions. The Born-Oppenheimer treatment of the extra dimensions is an essential ingredient in our approach. A possible applications of the idea to low dimensional condensed matter systems and high temperature field theory are also pointed out. This paper is an extended version of our previous unpublished work (SUNY-NTG-89-48, Jan. 1990).

T. Hatsuda; H. Kuratsuji

1994-09-09T23:59:59.000Z

102

Annual daylighting performance of a passive optical light shelf in sidelit  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Annual daylighting performance of a passive optical light shelf in sidelit Annual daylighting performance of a passive optical light shelf in sidelit perimeter zones of commercial buildings Title Annual daylighting performance of a passive optical light shelf in sidelit perimeter zones of commercial buildings Publication Type Report Year of Publication 2013 Authors McNeil, Andrew, and Eleanor S. Lee Keywords bidirectional scattering distribution functions, building energy efficiency, daylighting, Radiance simulations Abstract Sunlight redirecting systems have the potential to significantly offset electric lighting energy use in deep perimeter zones of buildings where the windows are subject to high daylight availability. New Radiance modeling tools have recently been developed and validated, enabling accurate and timely simulation analysis of the annual energy and comfort performance of these optically-complex, anisotropic systems. A parametric study was conducted using these tools to evaluate the performance of a commercially-available passive optical light shelf (OLS) in a 17.4 m deep (57 ft), south-facing open plan office zone in three climates. Daylighting efficiency, discomfort glare, and lighting energy savings with continuous dimming and bi-level switching controls were determined at varying depths within the zone. The OLS decreased lighting energy use significantly throughout the depth of the space and achieved these savings with minimal discomfort glare in the area near the window. Annual lighting energy use intensity was reduced to 1.71-1.82 kWh/ft2-yr (22-27%) over the full depth of the perimeter zone across the three climates modeled (Phoenix, Washington DC, and Minneapolis) compared to a non-daylit zone at 2.34 kWh/ft2-yr. There was a greater occurrence of discomfort glare (3-7% during daytime work hours) if the occupant was in a seated view position looking at the window from the back of the room. The system is passive, needing no adjustment during the day and over the seasons and can be used as a retrofit measure in existing buildings. These results are encouraging and demonstrate how the primary daylit sidelit area can be extended well beyond the defined limits provided by the newly adopted ASHRAE 90.1-2010 code (i.e., 1.0 times the head height of the window).

103

To be submitted to Solar Energy. Daylight performance of a microstructured prismatic window film in deep open  

E-Print Network [OSTI]

To be submitted to Solar Energy. Daylight performance of a microstructured prismatic window film Systems Department, Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory with vertical windows have the potential to offset lighting energy use in deep perimeter zones

104

When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birds  

Science Journals Connector (OSTI)

...daylight, ambient temperatures and light intensity...binomial error distribution. Models included...2012 Daily body temperature rhythms persist under the midnight sun but are absent...rhythms of body temperature in free-living...

2013-01-01T23:59:59.000Z

105

A mechanical approach to mean field spin models  

E-Print Network [OSTI]

Inspired by the bridge pioneered by Guerra among statistical mechanics on lattice and analytical mechanics on 1+1 continuous Euclidean space-time, we built a self-consistent method to solve for the thermodynamics of mean-field models defined on lattice, whose order parameters self average. We show the whole procedure by analyzing in full details the simplest test case, namely the Curie-Weiss model. Further we report some applications also to models whose order parameters do not self-average, by using the Sherrington-Kirkpatrick spin glass as a guide.

Giuseppe Genovese; Adriano Barra

2009-05-07T23:59:59.000Z

106

Knot and Conformal Field Theory Approach in Molecular and Nuclear Physics  

Science Journals Connector (OSTI)

......Field Theory Approach in Molecular and Nuclear Physics Syurei Iwao Department of...problem of dissociation (binding) energy for the molecules (nuclei) is discussed...13) Ring P. , Schuck P., The Nuclear Many-Body Problem (1980) : Springer......

Syurei Iwao

1990-03-01T23:59:59.000Z

107

An Improved Daylight Correction for IR Loss in ARM Diffuse SW Measurements  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

An Improved Daylight Correction for IR Loss An Improved Daylight Correction for IR Loss in ARM Diffuse SW Measurements C. N. Long, K. Younkin, and K. L. Gaustad Pacific Northwest National Laboratory Richland, Washington J. A. Augustine National Oceanic and Atmospheric Administration Air Resources Laboratory Surface Radiation Research Branch Boulder, Colorado Introduction A paper by Cess et al. (2000) notes that some clear-sky diffuse shortwave (SW) measurements they were using from the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site exhibited less than Rayleigh magnitude. Remarking that this is a physical impossibility, the obvious conclusion forwarded by the authors was that there was some problem with the ARM SGP diffuse SW data. Shortly thereafter, the problem of infrared (IR) loss from thermopile-based single black detector

108

Daylight Analysis with Microcomputers for School Buildings in a Hot, Humid Climate  

E-Print Network [OSTI]

their daylighting potentials. Finally, a computer program (~aylite), was used to verify the model results and allowed for multiple iterative studies with subtle variation of envelope manipulation. Initial computer simulations based on the existing school.... Lawrence Berkeley Laboratory Reports LBL-8705, -8706, and -8707. 2. Diamond, S.C., and Hunn, B.D. 1981. "Com- parison of DOE-2 Computer Program Simulations to Metered Date for Seven Commercial Buildings." ASHRAE Transactions, Vol. 87, Pt. 1. 3...

Leaver, J.; McQueen, T.

1987-01-01T23:59:59.000Z

109

Surface Tension of Electrolyte Interfaces: Ionic Specificity within a Field-Theory Approach  

E-Print Network [OSTI]

Surface Tension of Electrolyte Interfaces: Ionic Specificity within a Field-Theory Approach Tomer, 1000 Ljubljana, Slovenia (Dated: November 19, 2014) We study the surface tension of ionic solutions expansion beyond the mean-field result. We calculate the excess surface tension and obtain analytical

Andelman, David

110

A Multistage Stochastic Programming Approach for the Planning of Offshore Oil or Gas Field Infrastructure  

E-Print Network [OSTI]

1 A Multistage Stochastic Programming Approach for the Planning of Offshore Oil or Gas Field, Houston, TX 77098 Abstract The planning of offshore oil or gas field infrastructure under uncertainty is addressed in this paper. The main uncertainties considered are in the initial maximum oil or gas flowrate

Grossmann, Ignacio E.

111

A Machine Approach for Field Weakening of Permanent-Magnet Motors  

SciTech Connect (OSTI)

The commonly known technology of field weakening for permanent-magnet (PM) motors is achieved by controlling the direct-axis current component through an inverter, without using mechanical variation of the air gap, a new machine approach for field weakening of PM machines by direct control of air-gap fluxes is introduced. The demagnetization situation due to field weakening is not an issue with this new method. In fact, the PMs are strengthened at field weakening. The field-weakening ratio can reach 1O:1 or higher. This technology is particularly useful for the PM generators and electric vehicle drives.

Hsu, J.S.

2000-04-02T23:59:59.000Z

112

Asymmetric neutrino production in magnetized proto-neutron stars in fully relativistic mean-field approach  

SciTech Connect (OSTI)

We calculate the neutrino production cross-section in the proto-neutron-star matter under a strong magnetic field in the relativistic mean-field approach. We introduce a new parameter-set which can reproduce the 1.96 solar mass neutron star. We find that the production process increases emitted neutrinos along the direction parallel to the magnetic field and decrease those along its opposite direction. It means that resultant asymmetry due to the neutrino absorption and scattering process in the magnetic field becomes larger by the addition of the neutrino production process.

Maruyama, Tomoyuki [College of Bioresource Sciences, Nihon University, Fujisawa 252-8510 (Japan); Kajino, Toshitaka; Hidaka, Jun; Takiwaki, Tomoya [National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan); Yasutake, Nobutoshi [Department of Physics, Chiba Institute of Technology, Narashino 275-0023 (Japan); Kuroda, Takami [Department of Physics, University of Basel, CH-4056 Basel (Switzerland); Cheoun, Myung-Ki [Department of Physics, Soongsil University, Seoul, 156-743 (Korea, Republic of); Ryu, Chung-Yeol [General Education Curriculum Center, Hanyang University, Seoul, 133-791 (Korea, Republic of); Mathews, Grant J. [Center of Astrophysics, Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States)

2014-05-02T23:59:59.000Z

113

Feedback and Continuous Improvement Inspection Criteria and Approach - DOE Field Element, December 4, 2012  

Broader source: Energy.gov (indexed) [DOE]

Subject: Feedback and HS: HSS CRAD 45-21 U.S. Department of Continuous Improvement Rev: 1 Energy Inspection Criteria and Approach Eff. Date: December 4, 2012 - DOE Field Element Office of Safety and ~ Acting Di lector, Oftrce of Safety Emergency Management Evaluations and Emergency Management Evaluations Date: \ ~~ Ll\ \ &.... ~ Page 1 of 15 Criteria Review and Criteria Lead, Feedback and Approach Document Continuous Improvement Inspection Criteria and Approach - DOE Field Element Date: \:}.. \~ \1 a- 1.0 PURPOSE Within the Office of Enforcement and Oversight, the Office of Safety and Emergency Management Evaluations' mission is to assess the effectiveness of those environment, safety, and health systems and practices used by field organizations in implementing Integrated Safety

114

Metering and Monitoring Approaches for Verifying Energy Savings from Energy Conservation Retrofits: Experiences from the Field  

E-Print Network [OSTI]

METERING AND MONITORING APPROACHES FOR VERIFYING ENERGY SAVINGS FROM ENERGY CONSERVATION RETROFITS: EXPERIENCES FROM THE FIELD John R. McBride Charles J. Bohmer Roger H. Lippman Senior Scientist Senior Instrumentation Senior Instrumentation... drying process that operates at a constant energy level on a constant schedule are examples of this class of load. Engineering calculations without in-field metering and monitoring may be sufficient for this project class. Next in complexity...

McBride, J. R.; Bohmer, C. J.; Lippman, R. H.

115

Momentum-Dependent Mean Field Based Upon the Dirac-Brueckner Approach for Nuclear Matter  

E-Print Network [OSTI]

A momentum-dependent mean field potential, suitable for application in the transport-model description of nucleus-nucleus collisions, is derived in a microscopic way. The derivation is based upon the Bonn meson-exchange model for the nucleon-nucleon interaction and the Dirac-Brueckner approach for nuclear matter. The properties of the microscopic mean field are examined and compared with phenomenological parametrizations which are commonly used in transport-model calculations.

G. Q. Li; R. Machleidt

1993-08-06T23:59:59.000Z

116

Simulating the Daylight Performance of Complex Fenestration Systems Using Bidirectional Scattering Distribution Functions within Radiance  

SciTech Connect (OSTI)

We describe two methods which rely on bidirectional scattering distribution functions (BSDFs) to model the daylighting performance of complex fenestration systems (CFS), enabling greater flexibility and accuracy in evaluating arbitrary assemblies of glazing, shading, and other optically-complex coplanar window systems. Two tools within Radiance enable a) efficient annual performance evaluations of CFS, and b) accurate renderings of CFS despite the loss of spatial resolution associated with low-resolution BSDF datasets for inhomogeneous systems. Validation, accuracy, and limitations of the methods are discussed.

Ward, Gregory; Mistrick, Ph.D., Richard; Lee, Eleanor; McNeil, Andrew; Jonsson, Ph.D., Jacob

2011-01-21T23:59:59.000Z

117

A study of neutral particle decay in magnetic field with the "Worldline Instanton" approach  

E-Print Network [OSTI]

We study the process of neutrino decay to electron and $W$-boson in the external magnetic field using the semiclassical "worldline instanton" approach. Being interested only in the leading exponential factor, we make calculations in a toy model, treating all particles as scalars. This calculation determines the effective threshold energy of the reaction as a function of the magnetic field. Possible astrophysical applications are discussed. It is emphasized that the method is general and is applicable to a decay of an arbitrary neutral particle into charged ones in the external electromagnetic field.

Petr Satunin

2014-07-24T23:59:59.000Z

118

Potential Field based Approach for Coordinate Exploration with a Multi-Robot Team  

E-Print Network [OSTI]

Potential Field based Approach for Coordinate Exploration with a Multi-Robot Team Alessandro environment with a team of mobile robots. The objective is to explore the whole environment as fastest leaders. Keywords: multi-robot system, cooperative exploration, au- tonomous agents. I. INTRODUCTION

Paris-Sud XI, Université de

119

A mean field approach for computing solid-liquid surface tension for nanoscale interfaces  

E-Print Network [OSTI]

A mean field approach for computing solid-liquid surface tension for nanoscale interfaces Chi are largely determined by the solid-liquid surface tension. This is especially true for nanoscale systems with high surface area to volume ratios. While experimental techniques can only measure surface tension

Nielsen, Steven O.

120

Uncertainty of Oil Field GHG Emissions Resulting from Information Gaps: A Monte Carlo Approach  

Science Journals Connector (OSTI)

Uncertainty of Oil Field GHG Emissions Resulting from Information Gaps: A Monte Carlo Approach ... Regulations on greenhouse gas (GHG) emissions from liquid fuel production generally work with incomplete data about oil production operations. ... We study the effect of incomplete information on estimates of GHG emissions from oil production operations. ...

Kourosh Vafi; Adam R. Brandt

2014-08-10T23:59:59.000Z

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Motion of Spin 1/2 Massless Particle in a Curved Spacetime. II. Field Lagrangian Approach  

E-Print Network [OSTI]

Earlier we obtained quasi-classical equations of motion of spin 1/2 massless particle in a curved spacetime on base of simple Lagrangian model \\cite{al2}. Now we suggest an approach to derive the equations in framework of field theory. Noether theorem formulated in terms of Cartan' formalism of orthonormal frames gives equations for current of spin of the field and tensor of stress-energy. It is shown that under eikonal approximation the above mentioned equations can be reduced to equations for worldline of the particle and equation of spin of the particle along the worldline. This way conformity between corpuscular considerations of spin 1/2 massless particle and approach in framework of spinor field theory in curved spacetime is demonstrated.

A. T. Muminov

2008-05-12T23:59:59.000Z

122

Empirical assessment of a prismatic daylight-redirecting window film in a full-scale office testbed  

SciTech Connect (OSTI)

Daylight redirecting systems with vertical windows have the potential to offset lighting energy use in deep perimeter zones. Microstructured prismatic window films can be manufactured using low-cost, roll-to-roll fabrication methods and adhered to the inside surface of existing windows as a retrofit measure or installed as a replacement insulating glass unit in the clerestory portion of the window wall. A clear film patterned with linear, 50-250 micrometer high, four-sided asymmetrical prisms was fabricated and installed in the south-facing, clerestory low-e, clear glazed windows of a full-scale testbed facility. Views through the film were distorted. The film was evaluated in a sunny climate over a two-year period to gauge daylighting and visual comfort performance. The daylighting aperture was small (window-towall ratio of 0.18) and the lower windows were blocked off to isolate the evaluation to the window film. Workplane illuminance measurements were made in the 4.6 m (15 ft) deep room furnished as a private office. Analysis of discomfort glare was conducted using high dynamic range imaging coupled with the evalglare software tool, which computes the daylight glare probability and other metrics used to evaluate visual discomfort. The window film was found to result in perceptible levels of discomfort glare on clear sunny days from the most conservative view point in the rear of the room looking toward the window. Daylight illuminance levels at the rear of the room were significantly increased above the reference window condition, which was defined as the same glazed clerestory window but with an interior Venetian blind (slat angle set to the cut-off angle), for the equinox to winter solstice period on clear sunny days. For partly cloudy and overcast sky conditions, daylight levels were improved slightly. To reduce glare, the daylighting film was coupled with a diffusing film in an insulating glazing unit. The diffusing film retained the directionality of the redirected light spreading it within a small range of outgoing angles. This solution was found to reduce glare to imperceptible levels while retaining for the most part the illuminance levels achieved solely by the daylighting film.

Thanachareonkit, Anothai; Lee, Eleanor S.; McNeil, Andrew

2013-08-31T23:59:59.000Z

123

Thermal and daylighting evaluation of the effect of varying aspect ratios in urban canyons in Curitiba, Brazil  

Science Journals Connector (OSTI)

Urbanization is commonly associated with densification which may lead to vertical growth or urban consolidation. The present study evaluates the daylighting potential as a function of urban morphology for the city of Curitiba ( 25 2 5 ? 5 0 ? ? S 46 1 6 ? 1 5 ? ? W ). It also presents a thermal analysis for a representative street axis orientation in this location showing indoor conditions within a test office for different aspect ratios. In Curitiba certain street axes were designated to allow densification (in the so-called structural sector of the city). As a consequence there is a great risk of urban canyons being formed as local legislation does not impose height restrictions to adjacent buildings. Daylight analysis was based on software simulations with LUZ DO SOL DLN ECOTECT and RADIANCE. Thermal analysis was carried out by means of computer simulations with the IDA ICEsoftware. It was verified that diagonal axial orientations relative to the north (rotated in 45) provide higher daylighting potentials to buildings located in urban canyons. With regard to the thermal effect of varying the aspect ratio in an east-west street axis results confirm daylighting simulations showing the interrelation between both comfort parameters.

Eduardo Krger; Mauro Suga

2009-01-01T23:59:59.000Z

124

s daylight begins to illuminate the countryside, a cold wind rustles through the leaves of the weedy rows of  

E-Print Network [OSTI]

A s daylight begins to illuminate the countryside, a cold wind rustles through the leaves Experiment Station, while the bulk of the funding came from Federal Aid to Wildlife Restoration administered implemented by the U.S. Fish & Wildlife Service on public lands where deer were hav- ing a noticeable negative

125

Magnetic fields in the early universe in the string approach to MHD  

Science Journals Connector (OSTI)

There is a reformulation of magnetohydrodynamics in which the fundamental dynamical quantities are the positions and velocities of the lines of magnetic flux in the plasma, which turn out to obey equations of motion very much like ideal strings. We use this approach to study the evolution of a primordial magnetic field generated during the radiation-dominated era in the early universe. Causality dictates that the field lines form a tangled random network, and the string-like equations of motion, plus the assumption of perfect reconnection, inevitably lead to a self-similar solution for the magnetic field power spectrum. We present the predicted form of the power spectrum, and discuss insights gained from the string approximation, in particular the implications for the existence or nonexistence of an inverse cascade.

Mattias Christensson and Mark Hindmarsh

1999-08-13T23:59:59.000Z

126

Simulating the daylight performance of complex fenestration systems using bidirectional scattering distribution functions with  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

414E 414E Simulating the Daylight Performance of Complex Fenestration Systems Using Bidirectional Scattering Distribution Functions within Radiance G. Ward, R. Mistrick, E.S. Lee, A. McNeil, J. Jonsson Environmental Energy Technologies Division Building Technologies Department January 2011 Published in Leukos, Journal of the Illuminating Engineering Society of North America 7(4). DISCLAIMER This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information,

127

Stochastic Programming Approach for the Planning of Offshore Oil or Gas Field Infrastructure under Decision-Dependent Uncertainty  

Science Journals Connector (OSTI)

Stochastic Programming Approach for the Planning of Offshore Oil or Gas Field Infrastructure under Decision-Dependent Uncertainty ... The planning of offshore oil or gas field infrastructure under uncertainty is addressed in this article. ... An Efficient Multiperiod MINLP Model for Optimal Planning of Offshore Oil and Gas Field Infrastructure ...

Bora Tarhan; Ignacio E. Grossmann; Vikas Goel

2009-02-23T23:59:59.000Z

128

Neutron electric polarizability from unquenched lattice QCD using the background field approach  

E-Print Network [OSTI]

A calculational scheme for obtaining the electric polarizability of the neutron in lattice QCD with dynamical quarks is developed, using the background field approach. The scheme differs substantially from methods previously used in the quenched approximation, the physical reason being that the QCD ensemble is no longer independent of the external electromagnetic field in the dynamical quark case. One is led to compute (certain integrals over) four-point functions. Particular emphasis is also placed on the physical role of constant external gauge fields on a finite lattice; the presence of these fields complicates the extraction of polarizabilities, since it gives rise to an additional shift of the neutron mass unrelated to polarizability effects. The method is tested on a SU(3) flavor-symmetric ensemble furnished by the MILC Collaboration, corresponding to a pion mass of m_pi = 759 MeV. Disconnected diagrams are evaluated using stochastic estimation. A small negative electric polarizability of alpha =(-2.0 +/- 0.9) 10^(-4) fm^3 is found for the neutron at this rather large pion mass; this result does not seem implausible in view of the qualitative behavior of alpha as a function of m_pi suggested by Chiral Effective Theory.

Michael Engelhardt

2007-12-01T23:59:59.000Z

129

Dipole and quadrupole forces exerted on atoms in laser fields: The nonperturbative approach  

SciTech Connect (OSTI)

Manipulation of cold atoms by lasers has so far been studied solely within the framework of the conventional dipole approximation, and the atom-light interaction has been treated using low order perturbation theory. Laser control of atomic motions has been ascribed exclusively to the corresponding light-induced dipole forces. In this work, we present a general theory to derive the potential experienced by an atom in a monochromatic laser field in a context analogous to the Born-Oppenheimer approximation for molecules in the field-free case. The formulation goes beyond the dipole approximation and gives rise to the field-atom coupling potential terms which so far have not been taken into consideration in theoretical or experimental studies. Contrary to conventional approaches, our method is based upon the many electron Floquet theory and remains valid also for high intensity laser fields (i.e., for a strongly nonperturbative atom-light interaction). As an illustration of the developed theory, we investigate the trapping of cold atoms in optical lattices. We find that for some atoms for specific laser parameters, despite the absence of the dipole force, the laser trapping is still possible due to the electric quadrupole forces. Namely, we show that by using realistic laser parameters one can form a quadrupole optical lattice which is sufficiently strong to trap Ca and Na atoms.

Sindelka, Milan; Moiseyev, Nimrod [Department of Chemistry and Minerva Center of Nonlinear Physics in Complex Systems, Technion, Israel Institute of Technology, Haifa 32000 (Israel); Cederbaum, Lorenz S. [Theoretische Chemie, Physikalisch-Chemisches Institut, Universitaet Heidelberg, D-69120 Heidelberg (Germany)

2006-11-15T23:59:59.000Z

130

Empirical assessment of a prismatic daylight-redirecting window film in a full-scale office testbed  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for presentation to the IESNA 2013 Annual Conference, Huntington Beach, CA, for presentation to the IESNA 2013 Annual Conference, Huntington Beach, CA, October 26-29, 2013 and for publication in Leukos, the journal of the IESNA. Empirical assessment of a prismatic daylight- redirecting window film in a full-scale office testbed Anothai Thanachareonkit, Eleanor S. Lee, Andrew McNeil Building Technologies and Urban Systems Department, Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Mailstop 90-3111, 1 Cyclotron Road, Berkeley, CA 94720 USA Abstract Daylight redirecting systems with vertical windows have the potential to offset lighting energy use in deep perimeter zones. Microstructured prismatic window films can be manufactured using low-cost, roll-to-roll fabrication methods and adhered to the inside surface of existing

131

Momentum-dependent mean field based upon the Dirac-Brueckner approach for nuclear matter  

E-Print Network [OSTI]

A momentum-dependent mean field potential, suitable for application in the transport-model description of nucleus-nucleus collisions, is derived in a microscopic way. The derivation is based upon the Bonn meson-exchange model for the nucleon-nucleon interaction and the Dirac-Brueckner approach for nuclear matter. The properties of the microscopic mean field are examined and compared with phenomenological parametrizations which are commonly used in transport-model calculations. Typeset using REVTEX 1 The microscopic description of nuclear matter, finite nuclei, and nuclear reactions in terms of the realistic nucleon-nucleon (NN) interaction continues to be an interesting topic in nuclear physics. Although quantum chromodynamics (QCD) is believed to be the ultimate theory of strong interaction, the only quantitative NN potential models available up till now are based on the idea of meson exchange; a well-known example is the Bonn potential [1,2]. Special many-body theories, such as the Brueckner approach and the variational method,

G. Q. Li; R. Machleidt

1993-01-01T23:59:59.000Z

132

Roof aperture system for selective collection and control of solar energy for building heating, cooling and daylighting  

DOE Patents [OSTI]

The amount of building heating, cooling and daylighting is controlled by at least one pair of solar energy passing panels, with each panel of the pair of panels being exposed to a separate direction of sun incidence. A shutter-shade combination is associated with each pair of panels and the shutter is connected to the shade so that rectilinear movement of the shutter causes pivotal movement of the shade.

Sanders, William J. (Kansas City, KS); Snyder, Marvin K. (Overland Park, KS); Harter, James W. (Independence, MO)

1983-01-01T23:59:59.000Z

133

Energy Use Intensity and its Influence on the Integrated Daylighting Design of a Large Net Zero Energy Building: Preprint  

SciTech Connect (OSTI)

Net-zero energy buildings generate as much energy as they consume and are significant in the sustainable future of building design and construction. The role of daylighting (and its simulation) in the design process becomes critical. In this paper we present the process the National Renewable Energy Laboratory embarked on in the procurement, design, and construction of its newest building, the Research Support Facility (RSF) - particularly the roles of daylighting, electric lighting, and simulation. With a rapid construction schedule, the procurement, design, and construction had to be tightly integrated; with low energy use. We outline the process and measures required to manage a building design that could expect to operate at an efficiency previously unheard of for a building of this type, size, and density. Rigorous simulation of the daylighting and the electric lighting control response was a given, but the oft-ignored disconnect between lighting simulation and whole-building energy use simulation had to be addressed. The RSF project will be thoroughly evaluated for its performance for one year; preliminary data from the postoccupancy monitoring efforts will also be presented with an eye toward the current efficacy of building energy and lighting simulation.

Guglielmetti , R.; Scheib, J.; Pless, S. D.; Torcellini , P.; Petro, R.

2011-03-01T23:59:59.000Z

134

Effect of daylight saving time on lighting energy use: A literature review  

Science Journals Connector (OSTI)

The principal reason for introducing (and extending) daylight saving time (DST) was, and still is, projected energy savings, particularly for electric lighting. This paper presents a literature review concerning the effects of DST on energy use. Simple estimates suggest a reduction in national electricity use of around 0.5%, as a result of residential lighting reduction. Several studies have demonstrated effects of this size based on more complex simulations or on measured data. However, there are just as many studies that suggest no effect, and some studies suggest overall energy penalties, particularly if gasoline consumption is accounted for. There is general consensus that DST does contribute to an evening reduction in peak demand for electricity, though this may be offset by an increase in the morning. Nevertheless, the basic patterns of energy use, and the energy efficiency of buildings and equipment have changed since many of these studies were conducted. Therefore, we recommend that future energy policy decisions regarding changes to DST be preceded by high-quality research based on detailed analysis of prevailing energy use, and behaviours and systems that affect energy use. This would be timely, given the extension to DST underway in North America in 2007.

Myriam B.C. Aries; Guy R. Newsham

2008-01-01T23:59:59.000Z

135

Effective Field Theory Approach to Parton-Hadron Conversion in High Energy QCD Processes  

E-Print Network [OSTI]

A QCD based effective action is constructed to describe the dynamics of confinement and symmetry breaking in the process of parton-hadron conversion. The deconfined quark and gluon degrees of freedom of the perturbative QCD vacuum are coupled to color singlet collective fields representing the non-perturbative vacuum with broken scale and chiral symmetry. The effective action recovers QCD with its scale and chiral symmetry properties at short space-time distances, but yields at large distances (r > 1 fm) to the formation of symmetry breaking gluon and quark condensates. The approach is applied to the evolution of a fragmenting $q\\bar q$ pair with its generated gluon distribution, starting from a large hard scale $Q^2$. The modification of the gluon distribution arising from the coupling to the non-perturbative collective field results eventually in a complete condensation of gluons. Color flux tube configurations of the gluons in between the $q\\bar q$ pair are obtained as solutions of the equations of motion. With reasonable parameter choice, the associated energy per unit length (string tension) comes out $\\simeq 1$ GeV/fm, consistent with common estimates.

K. Geiger

1994-09-14T23:59:59.000Z

136

field  

National Nuclear Security Administration (NNSA)

9%2A en Ten-Year Site Plans (TYSP) http:nnsa.energy.govaboutusouroperationsinfopsinfopstysp

field field-type-text field-field-page-name">

137

Communication: Electronic and transport properties of molecular junctions under a finite bias: A dual mean field approach  

SciTech Connect (OSTI)

We show that when a molecular junction is under an external bias, its properties cannot be uniquely determined by the total electron density in the same manner as the density functional theory for ground state properties. In order to correctly incorporate bias-induced nonequilibrium effects, we present a dual mean field (DMF) approach. The key idea is that the total electron density together with the density of current-carrying electrons are sufficient to determine the properties of the system. Two mean fields, one for current-carrying electrons and the other one for equilibrium electrons can then be derived. Calculations for a graphene nanoribbon junction show that compared with the commonly used ab initio transport theory, the DMF approach could significantly reduce the electric current at low biases due to the non-equilibrium corrections to the mean field potential in the scattering region.

Liu, Shuanglong; Feng, Yuan Ping [Department of Physics and Graphene Research Centre, National University of Singapore, 2 Science Drive 3, Singapore 117542 (Singapore)] [Department of Physics and Graphene Research Centre, National University of Singapore, 2 Science Drive 3, Singapore 117542 (Singapore); Zhang, Chun, E-mail: phyzc@nus.edu.sg [Department of Physics and Graphene Research Centre, National University of Singapore, 2 Science Drive 3, Singapore 117542 (Singapore) [Department of Physics and Graphene Research Centre, National University of Singapore, 2 Science Drive 3, Singapore 117542 (Singapore); Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore)

2013-11-21T23:59:59.000Z

138

CLTC is a not-for-profit research, development and demonstration facility leading innovations in energy-efficient lighting and daylighting technologies.  

E-Print Network [OSTI]

in energy-efficient lighting and daylighting technologies. Collaborating with partners in government and staff also work with legislative leaders and regulatory agencies on energy policy, lighting codes and building standards. CLTC AffiLiATe gifT progrAm Supporting innovations in energy-efficient lighting cltc

California at Davis, University of

139

Bringing simulation to engineers in the field: a Web 2.0 approach  

Science Journals Connector (OSTI)

...hydraulic and water quality conditions elsewhere...DSTs) for field engineers critical to optimizing...what-if experiments, engineers can find the best...three types of water quality analyses supported...hydraulic and water quality conditions elsewhere...DSTs) for field engineers critical to optimizing...

2009-01-01T23:59:59.000Z

140

Energy Use Intensity and its Influence on the Integrated Daylighting Design of a Large Net Zero Energy Building: Preprint  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Use Intensity and its Use Intensity and its Influence on the Integrated Daylighting Design of a Large Net Zero Energy Building Preprint Rob Guglielmetti, Jennifer Scheib, Shanti D. Pless, and Paul Torcellini National Renewable Energy Laboratory Rachel Petro RNL Design Presented at the ASHRAE Winter Conference Las Vegas, Nevada January 29 - February 2, 2011 Conference Paper NREL/CP-5500-49103 March 2011 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes.

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
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141

An Optimization Approach to the Design of Multi-Size Heliostat fields  

E-Print Network [OSTI]

May 28, 2014 ... Maximizing the efficiency of the plant, i.e., optimizing the energy generated per ... The numerical experiments show the advantages of combining ... Keywords: solar thermal power; multi-size heliostat field; greedy algorithm.

E. Carrizosa

2014-05-28T23:59:59.000Z

142

Analysis on Irreversible Processes using the Phase-Field Variational Approach with the Entropy or Energy Functional  

E-Print Network [OSTI]

The variational approach usually used in phase field models (PFVA) is applied here to analyse complex irreversible processes such as thermoelectric (TE) effects and thermally driven mass transport (TDMT). Complex irreversible processes arise from the coupling effects between simple irreversible processes. Each simple irreversible process is assiciated with an entropy or energy density function. During complex irreversible processes with multiple fields present, this entropy or energy density function is assumed to be dependent on all independent field variables. Using the total entropy functionals, the TE effects and TDMT are analysed and important kinetic coefficients such as the Seebeck coefficient and the heat of transport are determined with straightforward physical contents. Using the total energy functionals, the linear irreversible processes are analysed with the Onsager approach and the nonlinear irreversible processes with PFVA. It is found both the Onsager's relations and the fluxes defined using PFVA guarantee the satisfaction of the first law of thermodynamics during the process of conversion of energies. To analyze the diffusion process under the influence of elasticity, PFVA is also modified to incorporate the reversible evolution of elastic fields. It is shown energies are conserved via both the irreversible diffusion process and the reversible evolution of the elastic fields. Finally, PFVA is generalized to study nonequilibrium thermodynamics using an extra kinetic contribution to the entropy density function. The analyses can be extended to a nonequilibrium thermodynamic system with multiple physical fields present. Thus, it is believed PFVA has the potential of not only significantly advancing our understanding of the thermodynamics of irreversible processes, but also making thermodynamics as a discipline and the study of it truly dynamic.

Peng Zhou

2014-12-31T23:59:59.000Z

143

Phase field study of the tip operating state of a freely growing dendrite against convection using a novel parallel multigrid approach  

Science Journals Connector (OSTI)

Alloy dendrite growth during solidification with coupled thermal-solute-convection fields has been studied by phase field modeling and simulation. The coupled transport equations were solved using a novel parallel-multigrid numerical approach with high ... Keywords: Dendrite formation, Parallel computing, Phase-field method, Solidification microstructure

Z. Guo; J. Mi; S. Xiong; P. S. Grant

2014-01-01T23:59:59.000Z

144

Mean-field approach in the multi-component gas of interacting particles applied to relativistic heavy-ion collisions  

E-Print Network [OSTI]

Generalized mean-field approach for thermodynamic description of relativistic single- and multi-component gas in the grand canonical ensemble is formulated. In the framework of the proposed approach different phenomenological excluded-volume procedures are presented and compared to the existing ones. The mean-field approach is then used to effectively include hard-core repulsion in hadron-resonance gas model for description of chemical freeze-out in heavy-ion collisions. We calculate the collision energy dependence of several quantities for different values of hard-core hadron radius and for different excluded-volume procedures such as van der Waals and Carnahan-Starling models. It is shown that a choice of the excluded-volume model becomes important for large particle densities, and for large enough values of hadron radii ($r\\gtrsim0.9$ fm) there can be a sizable difference between different excluded-volume procedures used to describe the chemical freeze-out in heavy-ion collisions. For the smaller and more commonly used values of hard-core hadron radii ($r\\lesssim0.5$ fm) the van der Waals excluded-volume procedure is shown to be sufficient.

D. Anchishkin; V. Vovchenko

2015-01-23T23:59:59.000Z

145

Critical scalar field collapse in AdS_3: an analytic approach  

E-Print Network [OSTI]

We present an analytical solution of a massless scalar field collapsing in a three dimensional space-time with a negative cosmological constant, i.e. asymptotically AdS_3. The Einstein and scalar field equations are formulated using double null Poincare coordinates. Trapping horizons form when a critical parameter is p > 1. There are indications that the horizon radius r_AH scales like r_AH ~ (p-1)^(1/4) and the black hole mass as M ~ r_AH^2 ~ (p-1)^(1/2), i.e. with a critical mass exponent of 1/2.

Baier, Rudolf; Taanila, Olli

2013-01-01T23:59:59.000Z

146

Approaches to identifying reservoir heterogeneity and reserve growth opportunities from subsurface data: The Oficina Formation, Budare field, Venezuela  

SciTech Connect (OSTI)

We applied an integrated geologic, geophysical, and engineering approach devised to identify heterogeneities in the subsurface that might lead to reserve growth opportunities in our analysis of the Oficina Formation at Budare field, Venezuela. The approach involves 4 key steps: (1) Determine geologic reservoir architecture; (2) Investigate trends in reservoir fluid flow; (3) Integrate fluid flow trends with reservoir architecture; and (4) Estimate original oil-in-place, residual oil saturation, and remaining mobile oil, to identify opportunities for reserve growth. There are three main oil-producing reservoirs in the Oficina Formation that were deposited in a bed-load fluvial system, an incised valley-fill, and a barrier-strandplain system. Reservoir continuity is complex because, in addition to lateral facies variability, the major Oficina depositional systems were internally subdivided by high-frequency stratigraphic surfaces. These surfaces define times of intermittent lacustrine and marine flooding events that punctuated the fluvial and marginal marine sedimentation, respectively. Syn and post depositional faulting further disrupted reservoir continuity. Trends in fluid flow established from initial fluid levels, response to recompletion workovers, and pressure depletion data demonstrated barriers to lateral and vertical fluid flow caused by a combination of reservoir facies pinchout, flooding shale markers, and the faults. Considerable reserve growth potential exists at Budare field because the reservoir units are highly compartment by the depositional heterogeneity and structural complexity. Numerous reserve growth opportunities were identified in attics updip of existing production, in untapped or incompletely drained compartments, and in field extensions.

Hamilton, D.S.; Raeuchle, S.K.; Holtz, M.H. [Bureau of Economic Geology, Austin, TX (United States)] [and others

1997-08-01T23:59:59.000Z

147

Quantum stochastic calculus approach to modeling double-pass atom-field coupling  

Science Journals Connector (OSTI)

We examine a proposal by Sherson and Mlmer to generate polarization-squeezed light in terms of quantum stochastic calculus (QSC). We investigate the statistics of the output field and confirm their results using the QSC formalism. In addition, we study the atomic dynamics of the system and find that this setup can produce up to 3 dB of atomic spin squeezing.

Gopal Sarma; Andrew Silberfarb; Hideo Mabuchi

2008-08-07T23:59:59.000Z

148

Case study field evaluation of a systems approach to retrofitting a residential HVAC system  

SciTech Connect (OSTI)

This case study focusing on a residence in northern California was undertaken as a demonstration of the potential of a systems approach to HVAC retrofits. The systems approach means that other retrofits that can affect the HVAC system are also considered. For example, added building envelope insulation reduces building loads so that smaller capacity HVAC system can be used. Secondly, we wanted to examine the practical issues and interactions with contractors and code officials required to accomplish the systems approach because it represents a departure from current practice. We identified problems in the processes of communication and installation of the retrofit that led to compromises in the final energy efficiency of the HVAC system. These issues must be overcome in order for HVAC retrofits to deliver the increased performance that they promise. The experience gained in this case study was used to optimize best practices guidelines for contractors (Walker 2003) that include building diagnostics and checklists as tools to assist in ensuring the energy efficiency of ''house as a system'' HVAC retrofits. The best practices guidelines proved to be an excellent tool for evaluating the eight existing homes in this study, and we received positive feedback from many potential users who reviewed and used them. In addition, we were able to substantially improve the energy efficiency of the retrofitted case study house by adding envelope insulation, a more efficient furnace and air conditioner, an economizer and by reducing duct leakage.

Walker, Iain S.; McWiliams, Jennifer A.; Konopacki, Steven J.

2003-09-01T23:59:59.000Z

149

Using Simple Light Sensors to Achieve Smart Daylight Harvesting Jiakang Lu, Dagnachew Birru, Kamin Whitehouse  

E-Print Network [OSTI]

glare and discomfort. An emerging approach is to use electrochromic glass, also called smart Permission. For example, the switching speed of electrochromic win- dows, or the time required to change from transparent

Whitehouse, Kamin

150

Statistical Physics approach to dendritic computation: The excitable-wave mean-field approximation  

E-Print Network [OSTI]

We analytically study the input-output properties of a neuron whose active dendritic tree, modeled as a Cayley tree of excitable elements, is subjected to Poisson stimulus. Both single-site and two-site mean-field approximations incorrectly predict a non-equilibrium phase transition which is not allowed in the model. We propose an excitable-wave mean-field approximation which shows good agreement with previously published simulation results [Gollo et al., PLoS Comput. Biol. 5(6) e1000402 (2009)] and accounts for finite-size effects. We also discuss the relevance of our results to experiments in neuroscience, emphasizing the role of active dendrites in the enhancement of dynamic range and in gain control modulation.

Leonardo L. Gollo; Osame Kinouchi; Mauro Copelli

2011-09-09T23:59:59.000Z

151

Surface Tension of Electrolyte Interfaces: Ionic Specificity within a Field-Theory Approach  

E-Print Network [OSTI]

We study the surface tension of ionic solutions at air/water and oil/water interfaces. By using field-theoretical methods and including a finite proximal surface-region with ionic-specific interactions. The free energy is expanded to first-order in a loop expansion beyond the mean-field result. We calculate the excess surface tension and obtain analytical predictions that reunite the Onsager-Samaras pioneering result (which does not agree with experimental data), with the ionic specificity of the Hofmeister series. We derive analytically the surface-tension dependence on the ionic strength, ionic size and ion-surface interaction, and show consequently that the Onsager-Samaras result is consistent with the one-loop correction beyond the mean-field result. Our theory fits well a wide range of salt concentrations for different monovalent ions using one fit parameter, and reproduces the reverse Hofmeister series for anions at the air/water and oil/water interfaces.

Markovich, Tomer; Podgornik, Rudolf

2014-01-01T23:59:59.000Z

152

Surface Tension of Electrolyte Interfaces: Ionic Specificity within a Field-Theory Approach  

E-Print Network [OSTI]

We study the surface tension of ionic solutions at air/water and oil/water interfaces. By using field-theoretical methods and including a finite proximal surface-region with ionic-specific interactions. The free energy is expanded to first-order in a loop expansion beyond the mean-field result. We calculate the excess surface tension and obtain analytical predictions that reunite the Onsager-Samaras pioneering result (which does not agree with experimental data), with the ionic specificity of the Hofmeister series. We derive analytically the surface-tension dependence on the ionic strength, ionic size and ion-surface interaction, and show consequently that the Onsager-Samaras result is consistent with the one-loop correction beyond the mean-field result. Our theory fits well a wide range of salt concentrations for different monovalent ions using one fit parameter per electrolyte, and reproduces the reverse Hofmeister series for anions at the air/water and oil/water interfaces.

Tomer Markovich; David Andelman; Rudolf Podgornik

2015-01-10T23:59:59.000Z

153

X-ray dynamical diffraction from single crystals with arbitrary shape and strain field: A universal approach to modeling  

Science Journals Connector (OSTI)

The effects of dynamical diffraction in single crystals engender many unique diffraction phenomena that cannot be interpreted by the kinematical-diffraction theory, yet knowledge of them is vital to resolving a vast variety of scientific problems ranging from crystal optics to strain measurements in crystalline specimens. Although the fundamental dynamical-diffraction theory was established decades ago, modeling it remains a challenge in a general case wherein the crystal has complex boundaries and mixed diffraction geometries (Bragg or Laue). Here, we propose a universal approach for modeling x-ray dynamical diffraction from a single crystal with arbitrary shape and strain field that is based on the integral representation of the Takagi-Taupin equations. Using it, we can construct the solution iteratively via a converging series, independent of the diffraction geometry. Moreover, the integral equations offer additional insights into the diffraction physics that are not readily apparent in its differential counterparts. To demonstrate this approach, we studied the dynamical diffraction from a slab of single crystal with both Bragg and Laue diffraction excited on the entrance boundaries, a problem that is difficult to model by other methods. We also explored the mirage effect caused by the presence of a linear strain field and compared it to the Eikonal theory. Lastly, we derived a dynamical-diffraction equation correlating the structural properties of a particle to its far-field Bragg-diffraction pattern, shedding light on how dynamical diffraction affects these kinematical-diffraction-based inverse techniques for reconstructing the shape and the strain field.

Hanfei Yan and Li Li

2014-01-07T23:59:59.000Z

154

Conservative and dissipative force field for simulation of coarse-grained alkane molecules: A bottom-up approach  

SciTech Connect (OSTI)

We apply operational procedures available in the literature to the construction of coarse-grained conservative and friction forces for use in dissipative particle dynamics (DPD) simulations. The full procedure rely on a bottom-up approach: large molecular dynamics trajectories of n-pentane and n-decane modeled with an anisotropic united atom model serve as input for the force field generation. As a consequence, the coarse-grained model is expected to reproduce at least semi-quantitatively structural and dynamical properties of the underlying atomistic model. Two different coarse-graining levels are studied, corresponding to five and ten carbon atoms per DPD bead. The influence of the coarse-graining level on the generated force fields contributions, namely, the conservative and the friction part, is discussed. It is shown that the coarse-grained model of n-pentane correctly reproduces self-diffusion and viscosity coefficients of real n-pentane, while the fully coarse-grained model for n-decane at ambient temperature over-predicts diffusion by a factor of 2. However, when the n-pentane coarse-grained model is used as a building block for larger molecule (e.g., n-decane as a two blobs model), a much better agreement with experimental data is obtained, suggesting that the force field constructed is transferable to large macro-molecular systems.

Trment, Sbastien; Rousseau, Bernard, E-mail: bernard.rousseau@u-psud.fr [Laboratoire de Chimie-Physique, UMR 8000 CNRS, Universit Paris-Sud, Orsay (France)] [Laboratoire de Chimie-Physique, UMR 8000 CNRS, Universit Paris-Sud, Orsay (France); Schnell, Benot; Petitjean, Laurent; Couty, Marc [Manufacture Franaise des Pneumatiques MICHELIN, Centre de Ladoux, 23 place des Carmes, 63000 Clermont-Ferrand (France)] [Manufacture Franaise des Pneumatiques MICHELIN, Centre de Ladoux, 23 place des Carmes, 63000 Clermont-Ferrand (France)

2014-04-07T23:59:59.000Z

155

Maryland Daylighting Report  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Day Lighting Quality Day Lighting Quality M a r y l a n d The most dramatic effect is the horizontal ribbon of square windows placed high on the north wall. This clerestory floods the primary spaces of the house with natural light by reflecting off of the curved white ceiling. The clearstory also turns the corner on both the east and west end walls adding dimension to the space with a hints of direct light depending on the season and time of day. The natural lighting scheme continues on the south façade with large glazed sliding doors that open into the bedroom. This sliding door unit also features glazed sidelights for a panoramic affect. The kitchen offers an accommodating counterpart to this design language in the form of two glider windows which run the length of the

156

Measurements of Submarine Daylight  

Science Journals Connector (OSTI)

... Lange cell, protected from the water by a thick disc of "plate-glass, externally roughened, within a strong box of brass, into which a rubber-insulated cable holding two ...

HANS PETTERSSON; SVANTE LANDBERG

1934-01-20T23:59:59.000Z

157

Window Daylighting Demo  

Broader source: Energy.gov [DOE]

Commercial Buildings Integration Project for the 2013 Building Technologies Office's Program Peer Review

158

A New Relational Spatial OLAP Approach For Multi-resolution and Spatio-multidimensional Analysis of Incomplete Field Data  

E-Print Network [OSTI]

, incomplete continuous field, multi-resolution geographic data Abstract: Integrating continuous spatial data to integrate spatial dimensions representing incomplete field data at different resolutions in a classical SOLAP architecture. 1 INTRODUCTION Spatial Data Warehouse (SDW) and Spatial OLAP (SOLAP) systems play

Paris-Sud XI, Université de

159

On the Use of Integrated Daylighting and Energy Simulations To Drive the Design of a Large Net-Zero Energy Office Building: Preprint  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

522 522 August 2010 On the Use of Integrated Daylighting and Energy Simulations To Drive the Design of a Large Net-Zero Energy Office Building Preprint Rob Guglielmetti, Shanti Pless, and Paul Torcellini Presented at SimBuild 2010 New York, New York August 15-19, 2010 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government.

160

A survey on control schemes for distributed solar collector fields. Part I: Modeling and basic control approaches  

Science Journals Connector (OSTI)

This article presents a survey of the different automatic control techniques that have been applied to control the outlet temperature of solar plants with distributed collectors during the last 25 years. Different aspects of the control problem involved in this kind of plants are treated, from modeling and simulation approaches to the different basic control schemes developed and successfully applied in real solar plants. A classification of the modeling and control approaches is used to explain the main features of each strategy.

E.F. Camacho; F.R. Rubio; M. Berenguel; L. Valenzuela

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Importance of aerosol composition, mixing state, and morphology for heterogeneous ice nucleation: A combined field and laboratory approach  

E-Print Network [OSTI]

In this study chemical compositions of background aerosol and ice nuclei were examined through laboratory investigations using Raman spectroscopy and field measurements by single-particle mass spectrometry. Aerosol sampling ...

Baustian, Kelly J.

162

Neutron star deformation due to poloidal-toroidal magnetic fields of arbitrary multipole order: a new analytic approach  

E-Print Network [OSTI]

A recipe is presented to construct an analytic, self-consistent model of a non-barotropic neutron star with a poloidal-toroidal field of arbitrary multipole order, whose toroidal component is confined in a torus around the neutral curve inside the star, as in numerical simulations of twisted tori. The recipe takes advantage of magnetic-field-aligned coordinates to ensure continuity of the mass density at the surface of the torus. The density perturbation and ellipticity of such a star are calculated in general and for the special case of a mixed dipole-quadrupole field as a worked example. The calculation generalises previous work restricted to dipolar, poloidal-toroidal and multipolar, poloidal-only configurations. The results are applied, as an example, to magnetars whose observations (e.g., spectral features and pulse modulation) indicate that the internal magnetic fields may be at least one order of magnitude stronger than the external fields, as inferred from their spin downs, and are not purely dipolar.

Mastrano, Alpha; Melatos, Andrew

2015-01-01T23:59:59.000Z

163

A Distribution-Based Approach to Tracking Points in Velocity Vector Fields Liefei Xu, H. Quynh Dinh  

E-Print Network [OSTI]

vector field points, and show results of tracking points in the simulated flow through a diesel engine Lin School of Electrical Engineering and Computer Science Oregon State University zhange- tors). A fundamental task in flow analysis is the ability to extract features and track their movements

Dinh, H. Quynh

164

The Influence of Individual, Contextual, and Social Factors on Perceived Behavioral Control of Information Technology: A Field Theory Approach  

Science Journals Connector (OSTI)

Organizations are increasingly concerned about ensuring that workers have sufficient sense of control over the information technology (IT) that they use. However, we know little about the antecedents of the end user's perceived behavioral control (PBC) ... Keywords: Autonomy, Computer Anxiety, Control Over It, Demand-Control Model, Field Theory, Managerial Support, Perceived Behavioral Control, Personal Innovativeness With It, Work Environment, Work Overload

Christophe Elie-Dit-Cosaque; Jessie Pallud; Michel Kalika

2011-01-01T23:59:59.000Z

165

Magicity of the $^{52}$Ca and $^{54}$Ca isotopes and tensor contribution within a mean--field approach  

E-Print Network [OSTI]

We investigate the magicity of the isotopes $^{52}$Ca and $^{54}$Ca, that was recently confirmed by two experimental measurements, and relate it to like--particle and neutron--proton tensor effects within a mean--field description. By analyzing Ca isotopes, we show that the like--particle tensor contribution induces shell effects that render these nuclei more magic than they would be predicted by neglecting it. In particular, such induced shell effects are stronger in the nucleus $^{52}$Ca and the single--particle gaps are increased in both isotopes due to the tensor force. By studying $N=32$ and $N=34$ isotones, neutron--proton tensor effects may be isolated and their role analyzed. It is shown that neutron--proton tensor effects lead to increasing $N=32$ and $N=34$ gaps, when going along isotonic chains, from $^{58}$Fe to $^{52}$Ca, and from $^{60}$Fe to $^{54}$Ca, respectively. The mean--field calculations are perfomed by employing one Skyrme parameter set, that was introduced in a previous work by fitting the tensor parameters together with the spin--orbit strength. The signs and the values of the tensor strengths are thus checked within this specific application. The obtained results indicate that the employed parameter set, even if generated with a partial adjustment of the parameters of the force, leads to the correct shell behavior and provides, in particular, a description of the magicity of $^{52}$Ca and $^{54}$Ca within a pure mean--field picture with the effective two--body Skyrme interaction.

Marcella Grasso

2014-03-03T23:59:59.000Z

166

An integrated approach to seismic stimulation of oil reservoirs: laboratory, field and theoretical results from DOE/industry collaborations.  

SciTech Connect (OSTI)

It has been observed repeatedly that low-frequency (10-500 Hz) seismic stress waves can enhance oil production from depleted reservoirs . Until recently, the majority of these observations have been anecdotal or at the proof-of-concept level. The physics coupling stress waves to multiphase fluid flow behavior in porous media is still poorly understood, even though numerous underlying physical mechanisms have been proposed to explain the observations . Basic research on the phenomenon is being conducted through a U .S. Department of Energy funded collaboration between Lawrence Berkeley National Laboratory, the University of California at Berkeley, Los Alamos National Laboratory and the U .S . oil and gas industry . The project has focused on three main areas of research: (1) laboratory core flow experiments, (2) field seismic monitoring of downhole stimulation tests, and (3) theoretical modeling of the coupled stress/flow phenomenon . The major goal is to obtain a comprehensive scientific understanding of the seismic stimulation phenomenon so that field application technologies can be improved. Initial developments and experimental results in all three research focus areas confirm historic observations that the stimulated flow phenomenon is real and that a fundamental scientific understanding can be obtained through continued research . Examples of project results and developments are presented here.

Roberts, P. M. (Peter M.); Majer, Ernest Luther; Lo, W. C. (Wei-Cheng); Sposito, Garrison,; Daley, T. M. (Thomas M.)

2003-01-01T23:59:59.000Z

167

Experimental analysis on a 1:2 scale model of the double light pipe, an innovative technological device for daylight transmission  

SciTech Connect (OSTI)

In this paper the authors present the double light pipe, an innovative technological device, designed as an evolution of a traditional light pipe, which distributes daylight to underground areas of a building, illuminating, at the same time, the passage areas thanks to a larger collector and a second transparent pipe attached to the first one. Unlike the traditional light pipe, thanks to this double illuminating function it can be located in the middle of a room, despite its encumbrance. In this paper the technological design of the double light pipe is presented and the results of an experimental analysis on a reduced scale (1:2) model are shown. Internal illuminance data over horizontal and vertical work-planes were measured in various sky conditions with or without direct solar radiation. Being this innovative device obtained by a light pipe integrated with a second pipe, it performs like a traditional light pipe for the final room and, at the same time, illuminates the intermediate room giving it uniform and high quality light, particularly indicated for wide plant areas, such as show-rooms or museums. (author)

Baroncini, C.; Boccia, O.; Chella, F.; Zazzini, P. [D.S.S.A.R.R. Faculty of Architecture, University ''G. D'Annunzio'' Viale Pindaro 42, 65127 Pescara (Italy)

2010-02-15T23:59:59.000Z

168

Modulation of redox status and calcium handling by extremely low frequency electromagnetic fields in C2C12 muscle cells: A real-time, single-cell approach  

Science Journals Connector (OSTI)

The biological effects of electric and magnetic fields, which are ubiquitous in modern society, remain poorly understood. Here, we applied a single-cell approach to study the effects of short-term exposure to extremely low frequency electromagnetic fields (ELF-EMFs) on muscle cell differentiation and function using C2C12 cells as an in vitro model of the skeletal muscle phenotype. Our focus was on markers of oxidative stress and calcium (Ca2+) handling, two interrelated cellular processes previously shown to be affected by such radiation in other cell models. Collectively, our data reveal that ELF-EMFs (1) induced reactive oxygen species production in myoblasts and myotubes with a concomitant decrease in mitochondrial membrane potential; (2) activated the cellular detoxification system, increasing catalase and glutathione peroxidase activities; and (3) altered intracellular Ca2+homeostasis, increasing the spontaneous activity of myotubes and enhancing cellular reactivity to a depolarizing agent (KCl) or an agonist (caffeine) of intracellular store Ca2+channels. In conclusion, our data support a possible link between exposure to ELF-EMFs and modification of the cellular redox state, which could, in turn, increase the level of intracellular Ca2+and thus modulate the metabolic activity of C2C12 cells.

Caterina Morabito; Francesca Rovetta; Mariano Bizzarri; Giovanna Mazzoleni; Giorgio Fan; Maria A. Mariggi

2010-01-01T23:59:59.000Z

169

DAYLIGHTING DIRECTORY 1/1980  

E-Print Network [OSTI]

of computerized energy trade off studies of AVAILABILITYDES IG:-1 ~1ETHODS 2. Energy trade off analysis of north

,

2012-01-01T23:59:59.000Z

170

Natural Daylighting - An Energy Analysis  

E-Print Network [OSTI]

adverse effects upon HVAC equipment. the area of each floor was increased to improve the space uti 1 ization within each Several types of insulation are used tower, a hi^ measure el iminated the need in the project. A1 1 construction U-values for two...- mum of 28 percent to .33. Shading Coefficient = .46 -46 x (.2B) = .13 -46 - .13 = .33 Mechanical equipment penthouses are located on the rooftop of each tower. The mechanical engineer noted that with a lapse rate of 3 1/2 degrees (F) per 1000...

Jarrell, R. P.

1987-01-01T23:59:59.000Z

171

Daylight metrics and energy savings  

E-Print Network [OSTI]

Mardaljevic and A. Nabil. Electrochromic glazing and facadeoptimiza- tion of electrochromic operations for occupantmodulating materials (e.g. electrochromic glazing), blinds,

Mardaljevic, John

2011-01-01T23:59:59.000Z

172

Memory effect on the multiphoton coherent destruction of tunneling in the electron transport of nanoscale systems driven by a periodic field: A generalized Floquet approach  

E-Print Network [OSTI]

Memory effect on the multiphoton coherent destruction of tunneling in the electron transport Floquet approach beyond the wide-band limit is developed for the general treatment of memory effect the significance of memory effect as well as illustrating the origin of the MP-CDT phenomenon. DOI: 10.1103/Phys

Chu, Shih-I

173

Frequency-Selective Near-Field Radiative Heat Transfer between Photonic Crystal Slabs: A Computational Approach for Arbitrary Geometries and Materials  

E-Print Network [OSTI]

of energy from a hot to a cold body is well known to be enhanced (even exceeding the black- body limit) whenFrequency-Selective Near-Field Radiative Heat Transfer between Photonic Crystal Slabs of Mathematics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA 3 Department

Soljaèiæ, Marin

174

Practice Field Practice Field  

E-Print Network [OSTI]

Courts Soccer Field Swimming pool Bandeen Hall Mountain House # 3 # 2 Golf Course Security Patterson Hall.B. Scott Arena Library Centennial Theater Mc Greer Hall Pollack Hall New Johnson Science Building Dewhurst Dining Hall Champlain Regional College # 4 Mackinnon Hall Residence # 6 Memorial House Retired Faculty

175

Magnetic field in a finite toroidal domain  

SciTech Connect (OSTI)

The magnetic field structure in a domain surrounded by a closed toroidal magnetic surface is analyzed. It is shown that ergodization of magnetic field lines is possible even in a regular field configuration (with nonvanishing toroidal component). A unified approach is used to describe magnetic fields with nested toroidal (possibly asymmetric) flux surfaces, magnetic islands, and ergodic field lines.

Ilgisonis, V. I.; Skovoroda, A. A., E-mail: skovorod@nfi.kiae.r [Russian Research Centre Kurchatov Institute (Russian Federation)

2010-05-15T23:59:59.000Z

176

LBNL Windows & Daylighting Software -- WINDOW Documentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(6.3.74 -- February 14, 2012) Release Notes Updated: 02/15/13 If you find bugs, or if you think these have not been fixed, please do not hesitate to send an email to WINDOWHelp@lbl.gov to report your findings. Getting feedback from users is how we improve the program. WINDOW 6.3.74 Program Changes Window LIbrary: Window Types In previous versions of WINDOW 6.3, there were two different Window Type lists, with conflicting ID numbers, which resulted in the possibility of a Window Library made with one set of Window Types would become corrupted (the wrong Window Types assigned) if the database records were imported into a another database with the different Window Type list. To solve this problem, we have added a database "migration" with this version of WINDOW -- when it opens any older database, it will update the Window Types list to have the choices (and IDs) shown below and then it will also update all the Window Library records to map to the new Window Types based on what the records were set to originally.

177

LBNL Window & Daylighting Software -- CGDB  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Overview Overview The LBNL WINDOW and THERM simulation programs (versions 6 and higher) have the capability to model "complex glazing systems" which include woven shades, venetian blinds, fritted glass, and other systems that can be characterized by BSDF (Bi-Directional Scattering Distribution Function) files. To support the modeling of these complex systems, it is necessary to characterize the optical and thermal properties of the materials and the systems being modeled. The Complex Glazing Database (CGDB) contains the data needed to model various manufacturers' systems. LBNL is still developing the measuring and submittal procedures so that manufacturers can submit measured data for review and inclusion in future CGDB releases. When these procedures are complete, it is hoped that manufacturers will measure and submit data for their products to LBNL for inclusion in the CGDB. In a similar process to the IGDB (International Glazing Database) it is envisioned that the CGDB will be released multiple times per year as new materials and systems are measured and added to the database.

178

LBNL Windows & Daylighting Software -- WINDOW Documentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Release Notes Release Notes Updated: 11/07/11 History of COMFEN 3.1 Releases New Features Glazed Wall Assembly In addition to modeling individual windows, COMFEN now has the capability of modeling "Glazed Wall Assemblies" which allow you to specify the number of horizontal and vertical framing members, as well as their spacing, and the program automatically generates the facade. Click here for more details. Material Library COMFEN now has a Material Library, which can be used in the Wall Construction and Spandrel Libraries. See the User Manual for more details. Wall Library COMFEN now has a Wall Library which can be used to build up layers from the Material Library to define a wall. See the User Manual for more details. Spandrel Library COMFEN now has a Spandrel Library which can be used to build up layers from the Material Library to define a spandrel, including glass and glazing systems as the outer-most layers. See the User Manual for more details.

179

LBNL Window & Daylighting Software -- RESFEN  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SYSTEM REQUIREMENTS GET A COPY DOCUMENTATION KNOWLEDGE BASE Overview Today's energy-efficient windows can dramatically lower the heating and cooling costs associated with windows while increasing occupant comfort and minimizing window surface condensation problems. However, consumers are often confused about how to pick the most efficient window for a residence. Product information typically offers window properties: U-factors or R-values, Solar Heat Gain Coefficients or Shading Coefficients, and air leakage rates. However, the relative importance of these properties depends on site- and building-specific conditions. Furthermore, these properties are based on static evaluation conditions that are very different from the real situation a window will be used in.

180

LBNL Windows & Daylighting Software -- WINDOW  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

WINDOW WINDOW NFRC Certification Version Release Version Beta Version WINDOW 6.3 (For NFRC Certification and modeling Complex Glazing Systems) WINDOW 7.1 For modeling vacuum glazing, deflected glass, vertical venetian blinds and perforated screens WINDOW 7.2 For modeling Cellular Shades, in addition to vacuum glazing, deflected glass, vertical venetian blinds and perforated screens Download WINDOW 6.3 (for NFRC Certification and complex glazing systems) Download WINDOW 7.1 Download WINDOW 7.2 Knowledge Base (Check here first if you are experiencing a problem with the software) Knowledge Base (Check here first if you are experiencing a problem with the software) Knowledge Base (Check here first if you are experiencing a problem with the software) New Features

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

LBNL Windows & Daylighting Software -- WINDOW Documentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Specular Glazing Systems Specular Glazing Systems NFRC THERM 6.3 / WINDOW 6.3 Simulation Manual July 2013: bullet Entire Manual in PDF Format approximate 8 MB Comparison of WINDOW 5 / THERM 5 and WINDOW 6 / THERM 6 Results for Specular Glazing Systems (PDF Format) NFRC WINDOW 6 / THERM 6 Training for Specular Systems (Power Point Presentation, Oct/Nov 2010) Tutorials Complex Glazing Systems bullet WINDOW 6.2 / THERM 6.2 Research Version User Manual (Documents features in WINDOW6 and THERM 6 for modeling complex glazing systems) bullet WINDOW 6.2 / THERM 6.2 Simulation Manual Chapter for Complex Glazing (Draft) This was used for NFRC Simulator training in June 2009, and includes detailed descriptions for modeling venetian blinds between glass and frits. bullet Complex Glazing Summary -- PDF File

182

LBNL Windows & Daylighting Software -- THERM  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

THERM 5.2 (older version) THERM 5.2 (older version) Download New Features Knowledge Base (Check here first if you are experiencing a problem with the software) Documentation Two-Dimensional Building Heat-Transfer Modeling THERM is a state-of-the-art, Microsoft Windows™-based computer program developed at Lawrence Berkeley National Laboratory (LBNL) for use by building component manufacturers, engineers, educators, students, architects, and others interested in heat transfer. Using THERM, you can model two-dimensional heat-transfer effects in building components such as windows, walls, foundations, roofs, and doors; appliances; and other products where thermal bridges are of concern. THERM's heat-transfer analysis allows you to evaluate a product’s energy efficiency and local temperature patterns, which may relate directly to problems with

183

LBNL Windows & Daylighting Software -- WINDOW Documentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Optics 6.0 Optics 6.0 (6.0 -- February 13, 2012) Release Notes Updated: 07/16/12 Program Changes Microsoft Windows 7 / Vista Operating System"Aware" Optics now installs and operates much better under the Microsoft Windows 7 and Vista operating systems. It is no longer necessary to run the "VistaFix" batch file after installing the program. Fixed Bugs If you find bugs, or if you think these have not been fixed, please do not hesitate to send an email to OpticsHelp@lbl.gov to report your findings. Getting feedback from users is how we improve the program. Paths Appear in Tools/Options In the Microsoft Windows 7 / Vista Operating System environments, the program would not display the directory paths in the Tools / Options "File Locations" dialog box. This is now fixed.

184

LBNL Windows & Daylighting Software -- WINDOW Documentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Vacuum Glazing Modeling Vacuum Glazing Modeling It is now possible to model vacuum glazing in WINDOW 7. The first step is to define a new vacuum "gap" in the "Gap Library" (formerly the Gas Library). Then that vacuum gap is used in a glazing system to calculate the thermal characteristics of the glazing system with a vacuum gap. Gap Library The Gas Library has been renamed the Gap Library. To define a vacuum gap, check the "Vacuum" checkbox (this is only available for single gases, not gas mixtures). When this box is checked, new input variables will appear, including the vacuum pressure, the specific heat ratio and molecular weight of the vacuum gas. It is also necessary to define a pillar system for the vacuum gap. Pillar Definition Double click the double arrow to the right of the Pillar Definition pulldown to define a new pillar system. Define the shape and dimensions of the pillar system.

185

LBNL Windows & Daylighting Software -- WINDOW Documentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2 2 (7.2.29 -- December 29 2013) Release Notes Updated: 12/29/13 If you find bugs, or have comments about this version, please do not hesitate to send an email to WINDOWHelp@lbl.gov to report your findings. Getting feedback from users is how we improve the program. WINDOW 7.2.29 (December 29, 2013) Program Changes Glazing System Shading System Details For shading system in a Glazing System Library construction, the emittances, conductance and TIR are not displayed, as they are only available after a calculation has been completed. Perforated Screens An input value for "Effective Openness Factor" has been added to the Shading Layer Library for perforated screens. At a future date, we will update the program to calculate this value automatically.

186

LBNL Window & Daylighting Software -- COMFEN  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

5 Beta 5 Beta (5.0.05 -- January 1, 2013) Last Updated: 01/01/2013 Screen Shots Opening Screen, Overview Tab Climate Tab Facade Edit Screen The Facade Library screen allows the user to define a facade with windows, and overhangs and fins for each window. COMFEN displays the geometry of each window that is defined as well as the position in the facade. Each window can be defined with a different glazing system and frame combination if desired. Multiple facades can be defined on this screen, and then compared in the Project screen, described below. Glazed Wall Assembly Definition Glazing System Library The Glazing System Library allows the user to make new glazing systems or import them from a WINDOW 6 database. Shading Control Scheme Library The Shading Control Scheme Library screen allows the user to define interior, exterior and between glass shading systems for

187

LBNL Windows & Daylighting Software -- WINDOW Documentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Vertical Louvered Blind Shading Systems Vertical Louvered Blind Shading Systems It is now possible to model Vertical Louvered Blinds in the Shading Layer Library, and then add them to a glazing system in the Glazing System Library. Shading Layer Library In the Shading Layer Library, set the Type to "Venetian blind, vertical" and then input values for the slat width, slat spacing and tilt will appear. The graphic image is a "plan" view of the vertical louvered blinds and will display the geometry of the blind based on the input values. Glazing System Library Once the Vertical Louvered Blind is defined in the Shading Layer Library, it can be added to a glazing system in the Glazing System Library. The blind in the screen shot below has been added to the inside of a double-glazed IGU.

188

LBNL Windows & Daylighting Software -- WINDOW Documentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

WINDOW 6 and THERM 6 Technical Documentation WINDOW 6 and THERM 6 Technical Documentation Algorithm Documentation WINDOW6 and THERM6 implement the ISO 15099 algorithms: bullet ISO 15099 The algorithms in WINDOW6 and THERM6 follow the procedures presented in ISO 15099: "Thermal performance of windows, doors and shading devices - Detailed calculations." See: http://webstore.ansi.org/ansidocstore/product.asp?sku=ISO+15099%3A2003 In addition to implementing ISO 15099 algorithms in WINDOW6 and THERM6, we have added additional capabilities to WINDOW6. The following reports and papers describe these additional capabilities and/or elaborate on ISO15099. bullet Thermal Algorithm Documentation for THERM6: Conrad 5 & Viewer 5 Technical and Programming Documentation June 20, 2006 bullet Thermal Algorithm Documentation for WINDOW6:

189

LBNL Windows & Daylighting Software -- THERM Documentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

THERM Tutorials THERM Tutorials bullet Creating THERM Sample File (Flash Video) (A 17 minute video which will open in your browser) specification document to accompany the Tutorial (PDF file) bullet Creating a Steel Stud Wall in THERM (Flash Video) Windows Media Player: WMV QuickTime: MOV bullet U-factor tags explanation (Flash Video) Windows Media Player WMV QuickTime: MOV bullet DXF Underlay - False Die Mold Method (Flash Video) Windows Media Player WMV QuickTime: MOV bullet The Calc Manager in THERM has been made into a multi-threaded process which allows it to take advantage of multi-core processors. See this video for more information about this enhancement. QuickTime:MOV bullet Displaying Surface Condensation Potential in THERM 7 QuickTime:MOV bullet Viewing R-values instead of U-factors in THERM 7

190

LBNL Windows & Daylighting Software -- WINDOW Documentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Deflection Modeling Deflection Modeling It is now possible to model the effects of glass deflection in WINDOW 7. Glazing System Library The Glazing System Library is where the deflection modeling input values are entered. When the "Model Deflection" box is checked, a Deflection input box appears. When the Glazing System is calculated, two rows of results, one for the undeflected state and one for the deflected state, appear for Center of Glass Results, Temperature Data and Angular data. In addition, a Deflection tab appears, which shows the deflection of each glass layer and the resulting gap width for each gap. Glazing System Deflect Input There are two options for defining the deflection in a glazing system, by choosing from the "Input" pulldown list:

191

LBNL Windows & Daylighting Software -- WINDOW Documentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CGDB Import Into WINDOW CGDB Import Into WINDOW Updated: 11/14/12 Detailed Instructions for Importing CGDB data into WINDOW These instructions apply to either WINDOW 6 or 7. WINDOW 6 vs WINDOW 7 Because the database structure of WINDOW 6 is different that WINDOW 7, there are different CGDB files to go with each version of WINDOW. There are also different versions of the XML files for each version, because in WINDOW 7 some problems with the files were fixed. Setup of CGDB The CGDB consists of a WINDOW database of records in the Shading Layer, Shade Material Library, and Glass Library, as well as a set of text files for systems that reference BSDF XML files. Database: The installation will put two databases into the "LBNL Shared" directory: (the location will depend on your operating system):

192

LBNL Windows & Daylighting Software -- THERM Components  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Components Components THERM has three basic components: Graphic User Interface: a graphic user interface that allows you to draw a cross section of the product or component for which you are performing thermal calculations. Heat Transfer Analysis: a heat-transfer analysis component that includes: an automatic mesh generator to create the elements for the finite-element analysis, a finite-element solver, an optional error estimator and adaptive mesh generator, and an optional view-factor radiation model. Results: a results displayer. Graphic User Interface THERM has standard graphic capabilities associated with the Microsoft Windows™ operating system. For example, THERM allows you to use: Both mouse and cursor operations; Standard editing features, such as Cut, Copy, Paste, Select All, and Delete;

193

LBNL Window & Daylighting Software -- COMFEN  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 1 Last Updated: 10/04/2012 Screen Shots Opening Screen, Overview Tab Climate Tab Facade Edit Screen The Facade Library screen allows the user to define a facade with windows, and overhangs and fins for each window. COMFEN displays the geometry of each window that is defined as well as the position in the facade. Each window can be defined with a different glazing system and frame combination if desired. Multiple facades can be defined on this screen, and then compared in the Project screen, described below. Glazed Wall Assembly Definition Glazing System Library The Glazing System Library allows the user to make new glazing systems or import them from a WINDOW 6 database. Shading Control Scheme Library The Shading Control Scheme Library screen allows the user to define interior, exterior and between glass shading systems for

194

Daylighting Application and Effectiveness in Industrial Facilities  

E-Print Network [OSTI]

Before the advent of practical mercury vapor and fluorescent lighting, the only available artificial lighting for industrial buildings was incandescent. The illumination of active industrial workspaces with incandescent lighting is difficult, so...

McCowan, B.; Birleanu, D.

2005-01-01T23:59:59.000Z

195

CALIFORNIA ENERGY Daylight and Retail Sales  

E-Print Network [OSTI]

through the integrated design, construction, and operation of building systems. The Integrated Energy to the final report of a larger research effort called Integrated Energy Systems: Productivity and Building Heschong, Project Director Fair Oaks, California Managed By: New Buildings Institute Cathy Higgins, Program

196

Experimental Evaluation of Innovative Wall Daylighting Systems  

E-Print Network [OSTI]

to deliver most of the light from the projecting mirror to the two inner spaces. One way of doing this without causing glare to the occupants is to project the light on the area of ceiling over the two spaces and allow the ceiling to serve aa a secondary... those two spaces (see Figure 10). To achieve this optical behavior, the appropriate cross- sectional shape for the projecting mirror would be an ellipse with one of its foci at the line souree (i.e., at the center of the glazing) and one of its foci...

Place, J. W.; Howard, T. C.; Paulos, S.; Chung, K.

1988-01-01T23:59:59.000Z

197

Daylighting Prediction Software: Comparative Analysis and Application  

E-Print Network [OSTI]

for the calibrated modeling of light scattered in enclosed spaces. These software packages used algorithms based on either total radiosity (flux transfer) computations or physically accurate ray tracing. A summary of this survey along with the selection criteria used...

Estes, J. M. Jr.; Schreppler, S.; Newsom, T.

2004-01-01T23:59:59.000Z

198

Daylighting systems for the Kuwait National Museum  

E-Print Network [OSTI]

for the degree of MASTER OF SCIENCE Approved as to style and content by: _______________________________ _____________________________ Liliana O. Beltran Paul K.... Woods (Chair of Committee) (Member) _______________________________ _____________________________ Rodney C. Hill...

Ahn, Byoungsoo

2005-08-29T23:59:59.000Z

199

LBNL Windows & Daylighting Software -- WINDOW Documentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Cellular / Honeycomb Shades Cellular / Honeycomb Shades Updated 09/30/2013 It is now possible to model cellular / honeycomb shading systems in the Shading System Library and then add them to a glazing system in the Glazing System Library. NOTE: Before attempting to calculate a glazing system with a cellular shade, you must make the following change to the THERM7.ini file, which is located in C:\Users\Public\LBNL\Settings. Close WINDOW7 before making this change. DocPath=C:\Users\Public\LBNL\WINDOW7\debug Shading Layer Library A cellular / honeycomb shade can now be defined in the Shading Layer Library. Defining this type of shading system requires an XML file which contains information about the cell geometry and the material thermal and optical properties. WINDOW can model two different types of cellular shades:

200

Times are in Mountain Daylight Savings Time  

Broader source: Energy.gov (indexed) [DOE]

Update on FY 12 NEET projects Update on FY 12 NEET projects Lead 8:00 AM 8:15 AM Welcome and Webinar Rules Maloy 8:15 AM 8:20 AM NEET Introduction Lesica 8:20 AM 8:40 AM Radiation tolerance and mechanical properties of advanced ceramic/metal composites Nastasi 8:40 AM 9:00 AM Accelerated Development of Zr-Containing New Generation FM Steels for Advanced Nuclear Reactors Tan 9:00 AM 9:20 AM Nanocrystalline SiC and Ti3SiC2 Alloys for Reactor Materials Henager 9:20 AM 9:40 AM Study of Intermetallic Nanostructures for Light-Water Reactor Materials Jensen 9:40 AM 10:00 AM Nanoscale Stable Precipitation-Strengthened Steels for Nuclear Reactor Applications Clarke 10:00 AM 10:15 AM Coffee Break 10:15 AM 10:35 AM Nanostructured Fe-Cr Alloys for Advanced Nuclear Energy Application Scattergood 10:35 AM 10:55 AM SiC-SiC Composite for Fuel Structure Applications

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Genomic approaches to identify chromosomal regions responding to divergent selection in multiple Sebastes species (subgenus: Sebastosomus)  

E-Print Network [OSTI]

approach incorporating the fields of evolutionary biology, genomics, management, and ocean sciences.

Martinez, Andres Nathaniel

2014-01-01T23:59:59.000Z

202

An Approach to Mapping of Shallow Petroleum Reservoirs Using Integrated Conventional 3D and Shallow P- and SH-Wave Seismic Reflection Methods at Teapot Dome Field in Casper, Wyoming.  

E-Print Network [OSTI]

??Using the famous Teapot Dome oil field in Casper, Wyoming, USA as a test case, we demonstrate how high-resolution compressional (P) and horizontally polarized shear (more)

Okojie-Ayoro, Anita Onohuome 1981-

2007-01-01T23:59:59.000Z

203

First Principles Investigations of Americium, Plutonium and their Mixtures using Dynamical Mean Field Theory  

SciTech Connect (OSTI)

We developed a relativistic dynamical mean field approach to study the properties of Plutonium Americium mixtures.

Gabriel Kotliar and Sergej Savrasov

2007-04-17T23:59:59.000Z

204

BBGKY kinetic approach for an e{sup -}e{sup +}{gamma} plasma created from the vacuum in a strong laser-generated electric field: The one-photon annihilation channel  

SciTech Connect (OSTI)

In the present work a closed system of kinetic equations is obtained from the truncation of the Bogoliubov-Born-Green-Kirkwood-Yvon hierarchy for the description of the vacuum creation of an electron-positron plasma and secondary photons due to a strong laser field. This truncation is performed in the Markovian approximation for the one-photon annihilation channel which is accessible due to the presence of the strong external field. Estimates of the photon production rate are obtained for different domains of laser field parameters (frequency {nu} and field strength E). A huge quantity of optical photons of the quasiclassical laser field is necessary to satisfy the conservation laws of the energy and momentum of the constituents (e{sup -}, e{sup +} and {gamma}) in this channel. Since the number of these optical photons corresponds to the order of perturbation theory, a vanishingly small photon production rate results for the optical region and strongly subcritical fields E<fields E < or approx. E{sub c}. In the infrared region the photon distribution has a 1/k spectrum typical for flicker noise.

Blaschke, D. B. [Institute for Theoretical Physics, University of Wroclaw, 50-204 Wroclaw (Poland); Bogoliubov Laboratory for Theoretical Physics, Joint Institute for Nuclear Research, RU - 141980 Dubna (Russian Federation); Dmitriev, V. V.; Smolyansky, S. A. [Department of Physics, Saratov State University, RU - 410026 Saratov (Russian Federation); Roepke, G. [Institut fuer Physik, University of Rostock, D - 18051 Rostock (Germany)

2011-10-15T23:59:59.000Z

205

The New York Times headquarters daylighting mockup: Monitored performance of the daylighting control system  

E-Print Network [OSTI]

is to instead achieve net zero energy buildings (ZEB) bysystems to achieve net zero energy use. Switchable windows,

Lee, Eleanor S.; Selkowitz, Stephen E.

2006-01-01T23:59:59.000Z

206

The New York Times headquarters daylighting mockup: Monitored performance of the daylighting control system  

E-Print Network [OSTI]

with LBNL sensors to monitor outdoor solar conditions,RTD temperature sensor (0.39C) shielded from direct solar

Lee, Eleanor S.; Selkowitz, Stephen E.

2006-01-01T23:59:59.000Z

207

Expert Opinion and the Demand for Experience Goods: An Experimental Approach in the Retail Wine Market  

E-Print Network [OSTI]

An Experimental Approach in the Retail Wine Market Jamesn Experimental Approach in the Retail Wine Market M a y 26,information. Utilizing a retail field experiment to overcome

Hilger, James; Rafert, Greg; Villas-Boas, Sofia B

2011-01-01T23:59:59.000Z

208

Field-induced confined states in graphene  

SciTech Connect (OSTI)

We report an approach to confine the carriers in single-layer graphene, which leads to quantum devices with field-induced quantum confinement. We demonstrated that the Coulomb-blockade effect evolves under a uniform magnetic field perpendicular to the graphene device. Our experimental results show that field-induced quantum dots are realized in graphene, and a quantum confinement-deconfinement transition is switched by the magnetic field.

Moriyama, Satoshi, E-mail: MORIYAMA.Satoshi@nims.go.jp [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Morita, Yoshifumi [Faculty of Engineering, Gunma University, Kiryu, Gunma 376-8515 (Japan); Watanabe, Eiichiro; Tsuya, Daiju [Nanotechnology Innovation Station, NIMS, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan)

2014-02-03T23:59:59.000Z

209

Arun field  

SciTech Connect (OSTI)

The Arun field is a giant gas-condensate field operated by Mobil and Pertamina with over 20,000 acres of closure at the top of the Arun reservoir. A middle-shelf patch reef complex of early to middle Miocene age is the producing facies at the Arun field. About 1,100 ft of porous limestones, encased in shales, create a stratigraphic trap for overpressure hydrocarbons. Three main carbonate lithologies were encountered during the examination of over 4,300 ft of core; (1) a reef facies consisting of vuggy, coral encrusting, red-algal boundstones, (2) a near-reef facies consisting of foraminiferal, mixed-skeletal packstones with gravel-size coral fragments, and (3) an interreef lagoonal facies consisting of benthonic-foram packstones. Twenty-two species of corals have been identified from Arun reef facies; major reef-forming coals, listed in order of decreasing abundance, are Porites cf P. Lutes, Cyphastrea microphthalma, Astreopora myriophthalma, Styloconiella gunetheri, Porites solida, and Acropora ssp. The Arun reef is comprised of limestones (with minor amounts of dolomite). No shale beds occur in the sequence, and all carbonate facies are in communication. A pervasive microporosity, occurring throughout the Arun Limestone, results from meteoric alteration of original carbonate mud to form a microrhombic porosity that accounts for about three-fourths of the field's total porosity.

Jordan, C.F. Jr.; Abdullah, M.

1988-01-01T23:59:59.000Z

210

Strong-field high-frequency approximation to the multiphoton ionization of hydrogen  

Science Journals Connector (OSTI)

The strong-field multiphoton ionization of atoms is considered and a theoretical approach dealing nonperturbatively with the radiation field formulated. The general computational...

Trombetta, F; Basile, S; Ferrante, G

1990-01-01T23:59:59.000Z

211

Fluidic electrodynamics: Approach to electromagnetic propulsion  

SciTech Connect (OSTI)

We report on a new methodological approach to electrodynamics based on a fluidic viewpoint. We develop a systematic approach establishing analogies between physical magnitudes and isomorphism (structure-preserving mappings) between systems of equations. This methodological approach allows us to give a general expression for the hydromotive force, thus re-obtaining the Navier-Stokes equation departing from the appropriate electromotive force. From this ground we offer a fluidic approach to different kinds of issues with interest in propulsion, e.g., the force exerted by a charged particle on a body carrying current; the magnetic force between two parallel currents; the Magnus's force. It is shown how the intermingle between the fluid vector fields and electromagnetic fields leads to new insights on their dynamics. The new concepts introduced in this work suggest possible applications to electromagnetic (EM) propulsion devices and the mastery of the principles of producing electric fields of required configuration in plasma medium.

Martins, Alexandre A.; Pinheiro, Mario J. [Institute for Plasmas and Nuclear Fusion and Instituto Superior Tecnico Lisboa, Portugal 351.1.21.841.92.43 (Portugal); Department of Physics and Institute for Plasmas and Nuclear Fusion and Instituto Superior Tecnico Lisboa, Portugal 351.1.21.841.93.22 (Portugal)

2009-03-16T23:59:59.000Z

212

Nevada Field Office  

National Nuclear Security Administration (NNSA)

about NNSS

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213

Quantum fields in curved spacetime  

E-Print Network [OSTI]

We review the theory of quantum fields propagating in an arbitrary, classical, globally hyperbolic spacetime. Our review emphasizes the conceptual issues arising in the formulation of the theory and presents known results in a mathematically precise way. Particular attention is paid to the distributional nature of quantum fields, to their local and covariant character, and to microlocal spectrum conditions satisfied by physically reasonable states. We review the Unruh and Hawking effects for free fields, as well as the behavior of free fields in deSitter spacetime and FLRW spacetimes with an exponential phase of expansion. We review how nonlinear observables of a free field, such as the stress-energy tensor, are defined, as well as time-ordered-products. The "renormalization ambiguities" involved in the definition of time-ordered products are fully characterized. Interacting fields are then perturbatively constructed. Our main focus is on the theory of a scalar field, but a brief discussion of gauge fields is included. We conclude with a brief discussion of a possible approach towards a nonperturbative formulation of quantum field theory in curved spacetime and some remarks on the formulation of quantum gravity.

Stefan Hollands; Robert M. Wald

2014-06-10T23:59:59.000Z

214

DOE Qualifying Official Training Approaches | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Services » Assistance » Federal Technical Capability Program » Services » Assistance » Federal Technical Capability Program » DOE Qualifying Official Training Approaches DOE Qualifying Official Training Approaches Qualifying Official Training Approaches Idaho Operations Office Livermore Field Office Nevada Field Office NNSA Production Office NNSA Service Center Office of Science, SC-3 Office of Science, Chicago Office of Science, Oak Ridge Savannah River Operations Office Sandia Field Office FTCP FAQS Qualifying Officials list DOE Qualifying Official Approach Matrix Additional Information FTCP History FTCP Members FTCP Plans & Reports FTCP Guiding Documents FTCP Issue Papers FTCP Site Specific Information Workforce Analysis and Staffing Enforcement Guidance Oversight Reporting Security Classification Nuclear Safety Assistance

215

Predictive ecology: systems approaches  

Science Journals Connector (OSTI)

...the fluidity of science. Q. Rev. Biol...need for systems approaches. Phil. Trans...Ecology and resource management: a quantitative approach. New York, NY...to develop the science of ecoinformatics along with approaches specific to ecological...

2012-01-01T23:59:59.000Z

216

Maintenance Approaches For ARIES-CS Power Core  

E-Print Network [OSTI]

of Fusion Energy September 14-16, 2004 Madison, WI #12;2 Outline Introduction Reactor parameters Maintenance approach based on field-period units Modular maintenance approach through selected ports Maintenance approach with ports between all the modular coils Summary and conclusion #12;3 Introduction The engineering

217

Magnetic fields from second-order interactions  

E-Print Network [OSTI]

It is well known that when two types of perturbations interact in cosmological perturbation theory, the interaction may lead to the generation of a third type. In this article we discuss the generation of magnetic fields from such interactions. We determine conditions under which the interaction of a first-order magnetic field with a first-order scalar-or vector-, or tensor-perturbations would lead to the generation of second order magnetic field. The analysis is done in a covariant-index-free approach, but could be done in the standard covariant indexed-approach.

Bob Osano

2014-03-21T23:59:59.000Z

218

Magnetic Field Safety Training  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Safety Training Magnetic Field Safety Strong Magnetic Fields exist around energized magnets. High magnetic fields alone are a recognized hazard only for personnel with certain...

219

Magnetic Field Safety Magnetic Field Safety  

E-Print Network [OSTI]

Magnetic Field Safety Training #12;Magnetic Field Safety Strong Magnetic Fields exist around energized magnets. High magnetic fields alone are a recognized hazard only for personnel with certain medical conditions such as pacemakers, magnetic implants, or embedded shrapnel. In addition, high magnetic

McQuade, D. Tyler

220

Dynamic Homecare Service Provisioning: A Field Test and Its Results  

E-Print Network [OSTI]

Dynamic Homecare Service Provisioning: A Field Test and Its Results Alireza Zarghami, Mohammad platform. The prototype was subsequently used in a real-world field test at a care institution in the Netherlands to validate the approach. This paper describes the design of the field test and reflects

Wieringa, Roel

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Multipurpose characterization of glazing systems with silica aerogel: In-field experimental analysis of thermal-energy, lighting and acoustic performance  

Science Journals Connector (OSTI)

Abstract Thermal-energy, acoustic and lighting performance of innovative glazing systems with aerogel inclusion is evaluated through in-field experiments. The study is carried out by monitoring two dedicated prototype buildings located in central Italy, and the consistency of results with in-lab analyses is investigated. Analyses showed that aerogel can decrease energy consumption for heating by up to 50% in winter, and its capability to keep the thermal zone warmer even several days after that the heating system is switched off. Acoustic analyses confirmed in-lab measurements, showing aerogel capability to increase the faade acoustic insulation index by 3dB. Lighting analyses showed aerogel effect to lower the daily average illuminance level by about 10% during sunny days. In cloudy weather conditions, with low level of solar radiation and indoor illuminance, the effect was relatively higher. In those cases when windows include shading elements such as protruding roof or deep window pad, aerogel effect was not clearly identified through continuous monitoring. The results of this integrated in-field experimental campaign showed that aerogel filled glazing cameras represent effective and innovative solutions for energy saving in winter, useful for improving acoustic faade performance with limited penalties in terms of daylighting.

Franco Cotana; Anna Laura Pisello; Elisa Moretti; Cinzia Buratti

2014-01-01T23:59:59.000Z

222

Gabriel H. Elkaim is a Ph.D. candidate in Aeronautics and Astronautics at Stanford University. He received his  

E-Print Network [OSTI]

clear daylight, good weather, or field markers that require complex pattern recognition [3-based "pseudo"- satellite, integer cycle ambiguity resolution is assured, and the solution integrity is greatly

Stanford University

223

LBNL Window & Daylighting Software -- WINDOW 6 Research Version  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2 2 Last Updated: 12/29/2013 If you find bugs, or have comments about this version, please do not hesitate to send an email to WINDOWHelp@lbl.gov to report your findings. Getting feedback from users is how we improve the program. WINDOW 7.2 (7.2.29) (12/29/2013) Release Notes -- Please read these before running this version ! This version contains these new modeling features Honeycomb shades Dynamic Glazing (Thermochromic and Electrochromic) This version is compatible with THERM 7.1 Please send us emails as you find issues in the program -- that is the only way that we can make it more robust. We hope to iterate versions fairly quickly in the next month or so to get the bugs ironed out. Radiance for WINDOW 7 Get a copy of Radiance for WINDOW 7.2 Must be used with WINDOW 7.0.59 or later

224

LBNL Windows & Daylighting Software -- WINDOW5: Knowledge Base  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

6.3 Knowledge Base 6.3 Knowledge Base Tip - use the Find function in your browser to search this page Last update:11/04/13 01:16 PM Download WINDOW 6.3 Send feedback via email to WindowHelp@lbl.gov. Also as bugs and comments are submitted by testers, the will be posted on this Knowledge Base, so check here for the latest information about the program. CONTENTS INSTALLATION KNOWN BUGS ** Operating Systems -- Microsoft Windows 7 and Vista ** Environmental Conditions -- Kimura convection model not working Locked Files with Install/De-install Environmental Conditions -- Fixed Combined Coefficient Bug Installation Problems Error Message during Calc due to decimal point of "," Minimum computer requirements Importing THERM file into WINDOW generates "Unnamed file has a bad format" error message

225

LBNL Windows & Daylighting Software -- THERM: Future Work  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

FUTURE WORK FUTURE WORK As window products are designed and manufactured to become increasingly more energy efficient, it is imperative that the software tools such as THERM, which are used to design and rate such products for U-values and Condensation Resistance, are increasingly accurate in order to capture the true benefits of high-performance products. THERM's user interface and algorithms were therefore designed to accommodate the results of ongoing research on fenestration product heat transfer. These topics include: Providing a library of local film coefficients to better model frame and edge heat transfer and projecting products such as skylights and greenhouse windows. Incorporating the effects of 3D heat transfer paths into THERM. Developing a convection model for small cavities (in extruded frames) and in large cavities (domed skylights).

226

LBNL Windows & Daylighting Software -- COMFEN3: Knowledge Base  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

COMFEN 4.0 COMFEN 4.0 Knowledge Base Last update:09/11/13 11:38 AM Download COMFEN Release Notes (includes a list of changes to the program by version) Send feedback via email to COMFENHelp@lbl.gov. Also as bugs and comments are submitted by testers, they will be posted on this Knowledge Base, so check here for the latest information about the program. CONTENTS INSTALLATION KNOWN ISSUES Installation Issues -- Administrator Between Blind Slat Width Greater than Glazing System Gap Installation Issues -- Microsoft.NET Using COMFEN 3 databases in COMFEN 4 Installation Problems COMFEN 4 database is not compatible with COMFEN 3.1 program Installation Directories by Operating System Site To Source Multiplier -- changing it does not invalidate results Minimum computer requirements

227

LBNL Windows & Daylighting Software -- COMFEN3: Knowledge Base  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

5 5 (5.0.05 -- January 1, 2013) Last update:09/11/13 11:40 AM Download COMFEN Release Notes (includes a list of changes to the program by version) Send feedback via email to COMFENHelp@lbl.gov. Also as bugs and comments are submitted by testers, they will be posted on this Knowledge Base, so check here for the latest information about the program. CONTENTS INSTALLATION KNOWN ISSUES Installation Issues -- Administrator Between Blind Slat Width Greater than Glazing System Gap Installation Issues -- Microsoft.NET Site To Source Multiplier -- changing it does not invalidate results Installation Directories by Operating System Natural Ventilation -- heating load increases Minimum computer requirements Climate Data Does Not Display Project Database from Previous Versions -- where is it ?

228

LBNL Windows & Daylighting Software -- COMFEN3: Knowledge Base  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

4.1 4.1 (4.1.25 -- October 4, 2012) Last update:09/11/13 11:39 AM Download COMFEN Release Notes (includes a list of changes to the program by version) Send feedback via email to COMFENHelp@lbl.gov. Also as bugs and comments are submitted by testers, they will be posted on this Knowledge Base, so check here for the latest information about the program. CONTENTS INSTALLATION KNOWN ISSUES Installation Issues -- Administrator Between Blind Slat Width Greater than Glazing System Gap Installation Issues -- Microsoft.NET Site To Source Multiplier -- changing it does not invalidate results Installation Directories by Operating System Natural Ventilation -- heating load increases Minimum computer requirements Simulation Error When Calculating a Scenario Project Database from Previous Versions -- where is it ?

229

LBNL Window & Daylighting Software -- WINDOW 6 Research Version  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

7.0 7.0 Last Updated: 05/20/2013 EN 673 / ISO 10077 Using WINDOW 7 and THERM 7 for EN 673 / ISO 10077 Calculations If you are interested in using WINDOW and THERM for EN 673 / ISO 10077 calculations, we have added that option to WINDOW 7. The calculation is not fully automated in the program yet, so there are many steps and a spreadsheet for the final calculation. We are interested in feedback (email WINDOWHelp@lbl.gov) about the process and the results from anyone who tests this feature. CAUTION: Do not model shading systems with the EN 673 thermal model. The program will produce results but they will most likely not be correct. Download this zip file (EN673.zip) which contains the following: Description of how to use WINDOW 6 and THERM 6 for the EN 673 / ISO 10077 calculations (PDF file)

230

LBNL Window & Daylighting Software -- WINDOW 6 Research Version  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(6.3.9) (6.3.9) October 2010 Last Updated: 11/07/2010 Complex Glazing Features for WINDOW6 The Research Version of WINDOW 6 has the following modeling capabilities: Shading Layer Library: A Shading Layer Library has been added to define shading systems, such as venetian blinds and diffusing layers, which can then be added as layers in the Glazing System Library. Shade Material Library: A Shading Material Library has been added to define materials to be used in the Shading Layer Library. Properties defined in this library include shade material reflectance and absorptance (in the solar, visible and IR wavelengths ranges), as well as the conductivity of the material. Glazing System Library In the “Layers” section of the Glazing System definition, it is now possible to specify either a glass layer or a shading layer. The shading system is chosen from the Shading Layer Library.

231

What is Daylight: Understanding the Sky as a  

E-Print Network [OSTI]

· Climate or average weather primarily a function of the sun. · Distribution of land masses affect winds · Introduction · Climate · Solar Geometry · Site Analysis · Orientation and solar radiation · Sun charts. #12;Bioclimatic Design · Psychometric chart ­ Air temperature ­ Humidity ­ Air velocity ­ Mean radiant

Ahmad, Sajjad

232

Quantifying the Impact of Daylight Saving Clock Changes  

E-Print Network [OSTI]

13, 2009 Abstract Methodologies currently used in load prediction are adapted to study the effect all year. The focus is on nation-wide electricity consumption, with data being provided on a half-hour shown that residential electricity consumption is around 36% of the overall total in the United States

Hill, Simon I.

233

QUICKLITE 1: A DAYLIGHTING PROGRAM FOR THE TI-59 CALCULATOR  

E-Print Network [OSTI]

Massachusetts 02139 The work described in this paper was funded by the Assistant Secretary for Conservation and Solar

Bryan, Harvey

2014-01-01T23:59:59.000Z

234

15 Acoustic Daylight Imaging in the Michael J. Buckingham  

E-Print Network [OSTI]

of radiation, including light. Acoustic techniques are thus a pre- ferred choice for probing the ocean depths. Two types of acoustic sys- tems, passive sonar and active sonar, are commonly used as detection devices in the ocean [1]. A passive sonar simply listens for the sound radiated by a target

Buckingham, Michael

235

ATIS -- Alternative Revenue Approaches  

E-Print Network [OSTI]

approaches to achieve a self sustaining ATIS, identifywith an emphasis on building a self-sustaining ATIS based onapproaches to achieve a self sustaining ATIS. The emphasis

Yim, Y. B.

2001-01-01T23:59:59.000Z

236

Closed Path Approach to Casimir Effect in Rectangular Cavities and Pistons  

E-Print Network [OSTI]

We study thoroughly Casimir energy and Casimir force in a rectangular cavity and piston with various boundary conditions, for both scalar field and electromagnetic (EM) field. Using the cylinder kernel approach, we find the Casimir energy exactly...

Liu, Zhonghai

2010-07-14T23:59:59.000Z

237

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

metrics for sustainable building design. National ResearchJ. 2007. Sustainable Construction: Green Building Design anddesign strategies implemented in buildings promoted as green, sustainable,

Konis, Kyle Stas

2011-01-01T23:59:59.000Z

238

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

metrics for sustainable building design. National ResearchJ. 2007. Sustainable Construction: Green Building Design anddesign strategies implemented in buildings promoted as green, sustainable,

Konis, Kyle Stas

2012-01-01T23:59:59.000Z

239

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

zone electrical lighting energy Consumption. Measured vs. zone electrical lighting energy consumption. Measured vs.

Konis, Kyle Stas

2012-01-01T23:59:59.000Z

240

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

zone electrical lighting energy Consumption. Measured vs. zone electrical lighting energy consumption. Measured vs.

Konis, Kyle Stas

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

facade as a result of the window film, upper window shadingmetal scrim and retrofit window film), does not comply forwindow. The film applied to the windows was a big mistake.

Konis, Kyle Stas

2012-01-01T23:59:59.000Z

242

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

facade as a result of the window film, upper window shadingmetal scrim and retrofit window film), does not comply forwindow. The film applied to the windows was a big mistake.

Konis, Kyle Stas

2011-01-01T23:59:59.000Z

243

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

integrated, and green design 11 Figure 2.1 Environmental control functions performed by the buildingbuilding as a model of high performance, integrated, and green design.Design and Evaluation of integrated envelope and lighting control strategies for commercial buildings.

Konis, Kyle Stas

2012-01-01T23:59:59.000Z

244

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

integrated, and green design 11 Figure 2.1 Environmental control functions performed by the buildingbuilding as a model of high performance, integrated, and green design.Design and Evaluation of integrated envelope and lighting control strategies for commercial buildings.

Konis, Kyle Stas

2011-01-01T23:59:59.000Z

245

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

of illuminance and temperature sensing with the Arduinoand internal view of Arduino microcontroller and associatedwas developed using the Arduino open-source electronics

Konis, Kyle Stas

2012-01-01T23:59:59.000Z

246

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

of illuminance and temperature sensing with the Arduinoand internal view of Arduino microcontroller and associatedwas developed using the Arduino open-source electronics

Konis, Kyle Stas

2011-01-01T23:59:59.000Z

247

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

Metrics Sub-Committee (DMsC) created by the Illuminationautonomy criteria by the DMsC, as well as the Memorandum of

Konis, Kyle Stas

2012-01-01T23:59:59.000Z

248

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

Metrics Sub-Committee (DMsC) created by the Illuminationautonomy criteria by the DMsC, as well as the Memorandum of

Konis, Kyle Stas

2011-01-01T23:59:59.000Z

249

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

with a (0.24 VLT, 0.25 SHGC) solar control film, for afilm (0.24 VLT, 0.39 SHGC) and interior roller shades (3%film (0.24 VLT, 0.39 SHGC) and interior roller shades (3%

Konis, Kyle Stas

2012-01-01T23:59:59.000Z

250

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network [OSTI]

with a (0.24 VLT, 0.25 SHGC) solar control film, for afilm (0.24 VLT, 0.39 SHGC) and interior roller shades (3%film (0.24 VLT, 0.39 SHGC) and interior roller shades (3%

Konis, Kyle Stas

2011-01-01T23:59:59.000Z

251

Decoherence and coherence in gravitational, electric and strong nuclear fields  

E-Print Network [OSTI]

Inspired in the work of Erich Joos which appreciated the role played by matter in making the decoherence of the gravitational field, we developed an alternative way of treating the former problem. Besides this, we used the alternative approach to examine the decoherence of the electric field performed by the conduction electrons in metals. As a counterpoint, we studied the coherence of the electric color field inside nucleons, which renders the strong field a totally quantum character.

P. R. Silva

2010-10-25T23:59:59.000Z

252

OTHER APPROACHES TO MANAGING  

E-Print Network [OSTI]

requirements Include minimum separations between wells and conventional/alternative onsite sewage treatment systems Supplement public sanitary sewerage systems primarily in rural areas Legal Approaches ConstructionOTHER APPROACHES TO MANAGING POLLUTANT SOURCES Laws and Land Use [Chapter 10.2] Rules of Thumb Rule

253

Golden Field Office Contacts  

Broader source: Energy.gov [DOE]

Field contacts at the U.S. Department of Energy's Golden Field Office who support the Federal Energy Management Program (FEMP)

254

Quantum Field Theory & Gravity  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Field Theory & Gravity Quantum Field Theory & Gravity Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664 Email...

255

A mean-field approach to the propagation of field patterns in stratified magnetorotational turbulence  

Science Journals Connector (OSTI)

......the standard visco-resistive MHD equations, neglecting the effects...treatment of the underlying MHD waves is mandatory. To improve...reminiscent of the solar butterfly diagram.1 The evolution of the radial...structures in the space-time diagram are much more filamentary......

Oliver Gressel

2010-06-11T23:59:59.000Z

256

Casimir Effect of Scalar Massive Field  

E-Print Network [OSTI]

The energy momentum tensor is used to introduce the Casimir force of the massive scalar field acting on a nonpenetrating surface. This expression can be used to evaluate the vacuum force by employing the appropriate field operators. To simplify our formalism we also relates the vacuum force expression to the imaginary part of the Green function via the fluctuation dissipation theorem and Kubo formula. This allows one to evaluate the vacuum force without resorting to the process of field quantization. These two approaches are used to calculate the attractive force between two nonpenetrating plates. Special attention is paid to the generalization of the formalism to D + 1 space-time dimensions.

Sonia Mobassem

2014-03-03T23:59:59.000Z

257

Newtonian Collapse of Scalar Field Dark Matter  

E-Print Network [OSTI]

In this letter, we develop a Newtonian approach to the collapse of galaxy fluctuations of scalar field dark matter under initial conditions inferred from simple assumptions. The full relativistic system, the so called Einstein-Klein-Gordon, is reduced to the Schr\\"odinger-Newton one in the weak field limit. The scaling symmetries of the SN equations are exploited to track the non-linear collapse of single scalar matter fluctuations. The results can be applied to both real and complex scalar fields.

F. Siddhartha Guzman; L. Arturo Urena-Lopez

2003-03-19T23:59:59.000Z

258

Optical Approach to Gravitational Redshift  

E-Print Network [OSTI]

An optical approach begins by interpreting the gravitational redshift resulting to a change in the relative velocity of light due to the medium of propagation in the gravitational field. The discussion continues by pointing out an agreement in structure between the equation for rays in geometrical optics and the geodesic equation of general relativity. From their comparison we learn that the path of rays should be given by the relation $ds^2=n^2(r)dr^2+r^2d\\theta^2$, not by $ds^2=dr^2+r^2d\\theta^2$, in a medium with spherical symmetry of refractive index $n(r)$. The development of an optical analogy suggests introducing $n^2(r)$ in place of $g_{rr}$ as an optical version of the Schwarzschild metric. In form and content, $n^2(r)$ is different from $g_{rr}$. The optical point of view replaces the general-relativity explanations in terms of time and gravitation.

Y. G. Yi

2012-04-12T23:59:59.000Z

259

Green field planning of distribution systems  

Science Journals Connector (OSTI)

It as an evident that the everyday life is basically based on electric power. Electric power networks provide the required power to the customers. However as greater amounts of power are daily demanded, the need for the construction of new networks or ... Keywords: energy transmission, green field approach, power demand, power loss, power system modelling, voltage drop

S. Hadjiionas; D. S. Oikonomou; G. P. Fotis; V. Vita; L. Ekonomou; C. Pavlatos

2009-05-01T23:59:59.000Z

260

Prequantum Classical Statistical Field Theory: Fundamentals  

SciTech Connect (OSTI)

We present fundamentals of a prequantum model with hidden variables of the classical field type. In some sense this is the comeback of classical wave mechanics. Our approach also can be considered as incorporation of quantum mechanics into classical signal theory. All quantum averages (including correlations of entangled systems) can be represented as classical signal averages and correlations.

Khrennikov, Andrei [International Center for Mathematical Modelling in Physics and Cognitive Sciences, Linnaeus University, Vaexjoe, S-35195 (Sweden)

2011-03-28T23:59:59.000Z

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

PERFORMANCE ASSESSMENT OF PV MODULES RELATIONSHIP BETWEEN STC RATING AND FIELD PERFORMANCE  

E-Print Network [OSTI]

in the spectral distribution. They depend on average annual daylight temperature, but only very weakly on the temperature distribution. The two key module parameters that control the effective efficiency are series, such as standard test conditions (STC) with one-sun irradiance (1 kW/m 2 , AM1.5 spectrum) and cell temperature (Tj

Sites, James R.

262

MARKET BASED APPROACHES  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

BASED BASED APPROACHES K.G. DULEEP MANAGING DIRECTOR EEA BACKGROUND * Introduction of fuel-cell vehicles and jump- starting the market will require significant government actions in the near term * Widespread understanding that command- and-control regulations can work for only very low sales volume. * Increased public sales and acceptance will need development of market based policies. ANALYSIS OBJECTIVES * EEA currently evaluating a number of market based approaches to enhancing fuel economy of conventional and hybrid vehicles. * Primary objective of effort is to evaluate a range of market based approaches that can be implemented when FCV models are market ready, and identify ones that could make a difference. * Effort is in the context of modifying existing approaches to special needs of FCVs

263

Approaches to Safe Nanotechnology  

Broader source: Energy.gov (indexed) [DOE]

Approaches to Safe Approaches to Safe Nanotechnology Managing the Health and Safety Concerns Associated with Engineered Nanomaterials DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention National Institute for Occupational Safety and Health Photo Credits: Nanotrees, Ghim Wei Ho and Professor Mark Welland, Nanostructure Center, University of Cambridge Managing the Health and Safety Concerns Associated with Engineered Nanomaterials DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention National Institute for Occupational Safety and Health Approaches to Safe Nanotechnology ii Approaches to Safe Nanotechnology This document is in the public domain and may be freely copied or reprinted. Disclaimer Mention of any company or product does not constitute endorsement by the National In-

264

Electric Field Calculations on Dry-Type Medium Voltage Current Transformers.  

E-Print Network [OSTI]

??This research presents potential and electric field calculations on medium voltage (MV) epoxy insulated outdoor current transformers (CTs) using a numeri-cal calculation approach. Two designs (more)

Lakshmichand Jain, Sandeep Kumar

2012-01-01T23:59:59.000Z

265

Modeling Sorption and Exchange Processes in Column Experiments and Large Scale Field Studies  

Science Journals Connector (OSTI)

This paper demonstrates the possibilities of reactive transport modeling in predicting contaminant transport processes of laboratory and field scales. Basic approaches of reactive transport modeling are discu...

Olaf Nitzsche; Harry Vereecken

2002-04-01T23:59:59.000Z

266

Hadrodynamic approach to compressible nonuniform nuclear systems  

Science Journals Connector (OSTI)

The energy-momentum tensor for isospin-symmetric semi-infinite nuclear matter (SINM) as well as for finite spherically symmetric nuclei is evaluated in the relativistic Thomas-Fermi (RTF) approximation of the ?-? model. The T33 stress tensor component of self-bound SINM vanishes identically. Our field theoretical RTF approach reflects the elementary relation p=2 ?/R between the bulk pressure p, the surface tension ? and the radius R of a nucleus. 1996 The American Physical Society.

T. v. Chossy and W. Stocker

1996-08-01T23:59:59.000Z

267

A combined roadmapping-cluster approach for emerging technologies  

Science Journals Connector (OSTI)

This paper develops and applies a foresight methodology that accounts for both the systemic character and the inherent uncertainty of emerging technology. An effort has been made in this direction by combining the 'cluster approach', a relatively recent policy instrument that is built on a systemic perspective on innovation, with 'technology roadmapping', a business strategy instrument that is used in firms to cope with the turbulent character of technology selection and innovation. The combination of these two approaches is expected to enrich the cluster approach and make it fit for emerging technologies. The combined roadmapping-cluster approach is applied to a new nanocoating field in Germany.

Harro Van Lente; Jon Van Til

2007-01-01T23:59:59.000Z

268

Analytical description for field-line wandering in strong magnetic turbulence  

Science Journals Connector (OSTI)

We investigate analytically the random walk of magnetic field lines. In previous analytical treatments of field line wandering or random walk, it was assumed that the turbulent magnetic field is much weaker than the mean field. In the present paper, we develop an improved analytical method to describe the stochastic properties of turbulent magnetic fields. This approach is an extension of the standard theory of field line wandering and can be applied to weak as well as to strong magnetic turbulence.

A. Shalchi; J. A. le Roux; G. M. Webb; G. P. Zank

2009-12-31T23:59:59.000Z

269

ARM - Field Campaign - Diffuse Shortwave IOP  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

govCampaignsDiffuse Shortwave IOP govCampaignsDiffuse Shortwave IOP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Diffuse Shortwave IOP 2001.09.24 - 2001.10.22 Lead Scientist : Joseph Michalsky Data Availability Data will not be available for public viewing until April 8, 2002. All data will be archived at the diffuse IOP web site by that date. For data sets, see below. Summary Almost 4 weeks of data were acquired under mostly sunny skies. Ninety-two percent of the daylight hours had measureable direct beam radiation. Much of the sunny data included completely cloud free conditions. The trackers functioned perfectly. Clear-sky data included low to moderate aerosol cases with no high aerosol conditions sampled. Data recovery from the

270

Determination of Electric-Field, Magnetic-Field, and Electric...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Electric-Field, Magnetic-Field, and Electric-Current Distributions of Infrared Optical Antennas: A Near-Field Determination of Electric-Field, Magnetic-Field, and Electric-Current...

271

Golden Field Office  

Office of Energy Efficiency and Renewable Energy (EERE)

The Golden Field Office was designated a Department of Energy field office in December 1992 to provide EERE with enhanced capability to develop and commercialize renewable energy and energy...

272

Smoothness- transferred random field  

E-Print Network [OSTI]

We propose a new random field (RF) model, smoothness-transfer random field (ST-RF) model, for image modeling. In the objective function of RF models, smoothness energy is defined with compatibility function to capture the ...

Wei, Donglai

2013-01-01T23:59:59.000Z

273

Heliostat Field Performance  

Science Journals Connector (OSTI)

The heliostat is the first subsystem in a central ... report of the SSPS Central Receiver System.The heliostat field was designed and manufactured by the ... Corporation.The original field design consisted of 160...

Pierre Wattiez; Juan Ramos; Sevillana

1986-01-01T23:59:59.000Z

274

Quantized Gravitational Field. II  

Science Journals Connector (OSTI)

A consistent formulation is given for the quantized gravitational field in interaction with integer spin fields. Lorentz transformation equivalence within a class of physically distinguished coordinate systems is verified.

Julian Schwinger

1963-11-01T23:59:59.000Z

275

Technical approach document  

SciTech Connect (OSTI)

The Uranium Mill Tailings Radiation Control Act (UMTRCA) of 1978, Public Law 95-604 (PL95-604), grants the Secretary of Energy the authority and responsibility to perform such actions as are necessary to minimize radiation health hazards and other environmental hazards caused by inactive uranium mill sites. This Technical Approach Document (TAD) describes the general technical approaches and design criteria adopted by the US Department of Energy (DOE) in order to implement remedial action plans (RAPS) and final designs that comply with EPA standards. It does not address the technical approaches necessary for aquifer restoration at processing sites; a guidance document, currently in preparation, will describe aquifer restoration concerns and technical protocols. This document is a second revision to the original document issued in May 1986; the revision has been made in response to changes to the groundwater standards of 40 CFR 192, Subparts A--C, proposed by EPA as draft standards. New sections were added to define the design approaches and designs necessary to comply with the groundwater standards. These new sections are in addition to changes made throughout the document to reflect current procedures, especially in cover design, water resources protection, and alternate site selection; only minor revisions were made to some of the sections. Sections 3.0 is a new section defining the approach taken in the design of disposal cells; Section 4.0 has been revised to include design of vegetated covers; Section 8.0 discusses design approaches necessary for compliance with the groundwater standards; and Section 9.0 is a new section dealing with nonradiological hazardous constituents. 203 refs., 18 figs., 26 tabs.

Not Available

1989-12-01T23:59:59.000Z

276

Geometrically consistent approach to stochastic DBI inflation  

SciTech Connect (OSTI)

Stochastic effects during inflation can be addressed by averaging the quantum inflaton field over Hubble-patch-sized domains. The averaged field then obeys a Langevin-type equation into which short-scale fluctuations enter as a noise term. We solve the Langevin equation for an inflaton field with a Dirac-Born-Infeld (DBI) kinetic term perturbatively in the noise and use the result to determine the field value's probability density function (PDF). In this calculation, both the shape of the potential and the warp factor are arbitrary functions, and the PDF is obtained with and without volume effects due to the finite size of the averaging domain. DBI kinetic terms typically arise in string-inspired inflationary scenarios in which the scalar field is associated with some distance within the (compact) extra dimensions. The inflaton's accessible range of field values therefore is limited because of the extra dimensions' finite size. We argue that in a consistent stochastic approach the inflaton's PDF must vanish for geometrically forbidden field values. We propose to implement these extra-dimensional spatial restrictions into the PDF by installing absorbing (or reflecting) walls at the respective boundaries in field space. As a toy model, we consider a DBI inflaton between two absorbing walls and use the method of images to determine its most general PDF. The resulting PDF is studied in detail for the example of a quartic warp factor and a chaotic inflaton potential. The presence of the walls is shown to affect the inflaton trajectory for a given set of parameters.

Lorenz, Larissa; Martin, Jerome; Yokoyama, Jun'ichi [Theoretical and Mathematical Physics Group, Centre for Particle Physics and Phenomenology, Louvain University, 2 Chemin du Cyclotron, 1348 Louvain-la-Neuve (Belgium); Institut d'Astrophysique de Paris, UMR 7095-CNRS, Universite Pierre et Marie Curie, 98bis boulevard Arago, 75014 Paris (France); Research Center for the Early Universe, Graduate School of Science, University of Tokyo, Tokyo 113-0033 (Japan); Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, Kashiwa, Chiba, 277-8568 (Japan)

2010-07-15T23:59:59.000Z

277

BUFFERED WELL FIELD OUTLINES  

U.S. Energy Information Administration (EIA) Indexed Site

OIL & GAS FIELD OUTLINES FROM BUFFERED WELLS OIL & GAS FIELD OUTLINES FROM BUFFERED WELLS The VBA Code below builds oil & gas field boundary outlines (polygons) from buffered wells (points). Input well points layer must be a feature class (FC) with the following attributes: Field_name Buffer distance (can be unique for each well to represent reservoirs with different drainage radii) ...see figure below. Copy the code into a new module. Inputs: In ArcMap, data frame named "Task 1" Well FC as first layer (layer 0). Output: Polygon feature class in same GDB as the well points FC, with one polygon field record (may be multiple polygon rings) per field_name. Overlapping buffers for the same field name are dissolved and unioned (see figure below). Adds an attribute PCTFEDLAND which can be populated using the VBA

278

Intrinsic Magnetic Fields  

Science Journals Connector (OSTI)

Emission theory of electromagnetic fields.(1) Intrinsic magnetic field. The intrinsic magnetic field of a point charge is defined as that portion of the field which cannot be annihilated by the Lorentz transformation. It is shown that the intrinsic field can be represented by lines of force carried by the same moving elements as carry the electric field, and a potential is given for it. (2) Frequency of emission of moving elements. A relation between the frequency of emission of moving elements and the number of lines of force to a tube is deduced on the assumption that the latter number is the same for the electric and magnetic fields and that each moving element marks the intersection of an electric and magnetic line of force.

Leigh Page

1923-08-01T23:59:59.000Z

279

Electromagnetic Field Quantization in Time-Dependent Dielectric Media  

E-Print Network [OSTI]

We present a Gupta-Bleuler quantization scheme for the electromagnetic field in time-dependent dielectric media. Starting from the Maxwell equations, a generalization of the Lorentz gauge condition adapted to time varying dielectrics is derived. Using this gauge, a Gupta-Bleuler approach to quantize all polarizations of the radiation field and the corresponding constraint condition are introduced. This new approach is different from the quantized electromagnetic field in vacuum in the sense that here the contributions of unphysical photons cannot be thoroughly eliminated, which further lead to a surface charge density. Finally, a discussion of potential experimental tests and possible implication is also made.

Xiao-Min Bei; Zhong-Zhu Liu

2011-04-18T23:59:59.000Z

280

Peak Power Reduction Strategies for the Lighting Systems in Government Buildings  

E-Print Network [OSTI]

presents an approach developed to reduce the peak power demand in the lighting. The approach included optimum use of daylight, time of day control and delamping. The implementation of this approach for eight government buildings with occupancy of between 7...

Al-Nakib, D.; Al-Mulla, A. A.; Maheshwari, G. P.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Arbitrary spin conformal fields in (A)dS  

E-Print Network [OSTI]

Totally symmetric arbitrary spin conformal fields in (A)dS space of even dimension greater than or equal to four are studied. Ordinary-derivative and gauge invariant Lagrangian formulation for such fields is obtained. Gauge symmetries are realized by using auxiliary fields and Stueckelberg fields. We demonstrate that Lagrangian of conformal field is decomposed into a sum of gauge invariant Lagrangians for massless, partial-massless, and massive fields. We obtain a mass spectrum of the partial-massless and massive fields and confirm the conjecture about the mass spectrum made in the earlier literature. In contrast to conformal fields in flat space, the kinetic terms of conformal fields in (A)dS space turn out to be diagonal with respect to fields entering the Lagrangian. Explicit form of conformal transformation which maps conformal field in flat space to conformal field in (A)dS space is obtained. Covariant Lorentz-like and de-Donder like gauge conditions leading to simple gauge-fixed Lagrangian of conformal fields are proposed. Using such gauge-fixed Lagrangian, which is invariant under global BRST transformations, we explain how the partition function of conformal field is obtained in the framework of our approach.

R. R. Metsaev

2014-07-02T23:59:59.000Z

282

Functional Approach to Classical Yang-Mills Theories  

E-Print Network [OSTI]

Sometime ago it was shown that the operatorial approach to classical mechanics, pioneered in the 30's by Koopman and von Neumann, can have a functional version. In this talk we will extend this functional approach to the case of classical field theories and in particular to the Yang-Mills ones. We shall show that the issues of gauge-fixing and Faddeev-Popov determinant arise also in this classical formalism.

P. Carta; D. Mauro

2001-07-10T23:59:59.000Z

283

PROBABILISTIC CATALOGS FOR CROWDED STELLAR FIELDS  

SciTech Connect (OSTI)

We present and implement a probabilistic (Bayesian) method for producing catalogs from images of stellar fields. The method is capable of inferring the number of sources N in the image and can also handle the challenges introduced by noise, overlapping sources, and an unknown point-spread function. The luminosity function of the stars can also be inferred, even when the precise luminosity of each star is uncertain, via the use of a hierarchical Bayesian model. The computational feasibility of the method is demonstrated on two simulated images with different numbers of stars. We find that our method successfully recovers the input parameter values along with principled uncertainties even when the field is crowded. We also compare our results with those obtained from the SExtractor software. While the two approaches largely agree about the fluxes of the bright stars, the Bayesian approach provides more accurate inferences about the faint stars and the number of stars, particularly in the crowded case.

Brewer, Brendon J. [Department of Statistics, University of Auckland, Private Bag 92019, Auckland 1142 (New Zealand); Foreman-Mackey, Daniel; Hogg, David W., E-mail: bj.brewer@auckland.ac.nz [Center for Cosmology and Particle Physics, Department of Physics, New York University, Washington Place, New York, NY 10003 (United States)

2013-07-01T23:59:59.000Z

284

Field emission electron source  

DOE Patents [OSTI]

A novel field emitter material, field emission electron source, and commercially feasible fabrication method is described. The inventive field emission electron source produces reliable electron currents of up to 400 mA/cm.sup.2 at 200 volts. The emitter is robust and the current it produces is not sensitive to variability of vacuum or the distance between the emitter tip and the cathode. The novel emitter has a sharp turn-on near 100 volts.

Zettl, Alexander Karlwalter (Kensington, CA); Cohen, Marvin Lou (Berkeley, CA)

2000-01-01T23:59:59.000Z

285

ENERGY SMART SCHOOLS - APPLIED RESEARCH, FIELD TESTING, AND TECHNOLOGY INTEGRATION  

SciTech Connect (OSTI)

This multi-state collaborative project will coordinate federal, state, and private sector resources and high-priority school-related energy research under a comprehensive initiative that includes tasks that increase adoption of advanced energy efficiency high-performance technologies in both renovation of existing schools and building new ones; educate and inform school administrators, architects, engineers, and manufacturers nationwide as to the energy, economic, and environmental benefits of energy efficiency technologies; and improve the learning environment for the nation's students through use of better temperature controls, improvements in air quality, and increased daylighting in schools.

Kate Burke

2004-01-01T23:59:59.000Z

286

Hot Pot Field Observations  

SciTech Connect (OSTI)

Map of field observations including depressions, springs, evidence of former springs, travertine terraces and vegetation patterns. Map also contains interpretation of possible spring alignments.

Lane, Michael

2013-06-28T23:59:59.000Z

287

Hot Pot Field Observations  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Map of field observations including depressions, springs, evidence of former springs, travertine terraces and vegetation patterns. Map also contains interpretation of possible spring alignments.

Lane, Michael

288

Plasma-satellite interaction driven magnetic field perturbations  

SciTech Connect (OSTI)

We report the first fully kinetic quantitative estimate of magnetic field perturbations caused by the interaction of a spacecraft with space environment. Such perturbations could affect measurements of geophysical magnetic fields made with very sensitive magnetometers on-board satellites. Our approach is illustrated with a calculation of perturbed magnetic fields near the recently launched Swarm satellites. In this case, magnetic field perturbations do not exceed 20 pT, and they are below the sensitivity threshold of the on-board magnetometers. Anticipating future missions in which satellites and instruments would be subject to more intense solar UV radiation, however, it appears that magnetic field perturbations associated with satellite interaction with space environment, might approach or exceed instruments' sensitivity thresholds.

Saeed-ur-Rehman, E-mail: surehman@ualberta.ca [Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1 (Canada); Theoretical Physics Division, PINSTECH, Nilore Islamabad 44000 (Pakistan); Marchand, Richard, E-mail: Richard.Marchand@ualberta.ca [Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1 (Canada)

2014-09-15T23:59:59.000Z

289

Recovery of 3D Solar Magnetic Field Model Parameter Using Image Structure Matching  

Science Journals Connector (OSTI)

An approach to recover a 3D solar magnetic field model parameter using intensity images of the Sun's corona is introduced. The approach is a quantitative approach in which the 3D model parameter is determined via an image structure matching scheme. The ... Keywords: 3D Parameter Recovery, Image-based Modeling, Structure Matching

Jong Kwan Lee; G. Allen Gary

2009-05-01T23:59:59.000Z

290

Field of Expertise Biotechnology  

E-Print Network [OSTI]

Field of Expertise Human- & Biotechnology #12;Human- and biotechnology is one of the key possible by research in human- and biotechnology is not just restricted to medicine and pharmacy, but also laboratory to support introduction of medical products to the market. In the field of biotechnology, Graz

291

Diamond fiber field emitters  

DOE Patents [OSTI]

A field emission electron emitter comprising an electrode formed of at least one diamond, diamond-like carbon or glassy carbon composite fiber, said composite fiber having a non-diamond core and a diamond, diamond-like carbon or glassy carbon coating on said non-diamond core, and electronic devices employing such a field emission electron emitter.

Blanchet-Fincher, Graciela B. (Wilmington, DE); Coates, Don M. (Santa Fe, NM); Devlin, David J. (Los Alamos, NM); Eaton, David F. (Wilmington, DE); Silzars, Aris K. (Landenburg, PA); Valone, Steven M. (Santa Fe, NM)

1996-01-01T23:59:59.000Z

292

Dynamics of polymers: A mean-field theory  

SciTech Connect (OSTI)

We derive a general mean-field theory of inhomogeneous polymer dynamics; a theory whose form has been speculated and widely applied, but not heretofore derived. Our approach involves a functional integral representation of a Martin-Siggia-Rose (MSR) type description of the exact many-chain dynamics. A saddle point approximation to the generating functional, involving conditions where the MSR action is stationary with respect to a collective density field ? and a conjugate MSR response field ?, produces the desired dynamical mean-field theory. Besides clarifying the proper structure of mean-field theory out of equilibrium, our results have implications for numerical studies of polymer dynamics involving hybrid particle-field simulation techniques such as the single-chain in mean-field method.

Fredrickson, Glenn H. [Department of Chemical Engineering, University of California, Santa Barbara, California 93106 (United States) [Department of Chemical Engineering, University of California, Santa Barbara, California 93106 (United States); Materials Research Laboratory, University of California, Santa Barbara, California 93106 (United States); Department of Materials, University of California, Santa Barbara, California 93106 (United States); Orland, Henri [Institut de Physique Thorique, CE-Saclay, CEA, F-91191 Gif-sur-Yvette Cedex (France)] [Institut de Physique Thorique, CE-Saclay, CEA, F-91191 Gif-sur-Yvette Cedex (France)

2014-02-28T23:59:59.000Z

293

Abandoned oil fields in Oklahoma  

SciTech Connect (OSTI)

Data are presented for approximately 165 abandoned oil fields in Oklahoma that have produced 10,000 or more barrels of oil prior to abandonment. The following information is provided for each field: county; DOE field code; field name; AAPG geologic province code; discovery date of field; year of last production, if known; discovery well operator; proven acreage; formation thickness; depth of field; gravity of oil production; calendar year; yearly field oil production; yearly field gas production; cumulative oil production; cumulative gas production; number abandoned fields in county; cumulative production of oil from fields; and cumulative production of gas from fields. (ATT)

Chism, J.

1983-08-01T23:59:59.000Z

294

Robust approach to f(R) gravity  

SciTech Connect (OSTI)

We consider metric f(R) theories of gravity without mapping them to their scalar-tensor counterpart, but using the Ricci scalar itself as an ''extra'' degree of freedom. This approach avoids then the introduction of a scalar-field potential that might be ill defined (not single valued). In order to explicitly show the usefulness of this method, we focus on static and spherically symmetric spacetimes and deal with the recent controversy about the existence of extended relativistic objects in certain class of f(R) models.

Jaime, Luisa G. [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, Mexico Distrito Federal 04510 (Mexico); Facultad de Ciencias, Universidad Nacional Autonoma de Mexico, Apartado Postal 50-542, Mexico Distrito Federal 04510 (Mexico); Patino, Leonardo [Facultad de Ciencias, Universidad Nacional Autonoma de Mexico, Apartado Postal 50-542, Mexico Distrito Federal 04510 (Mexico); Salgado, Marcelo [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, Mexico Distrito Federal 04510 (Mexico)

2011-01-15T23:59:59.000Z

295

Spatial Structure and Field-Line Diffusion in Transverse Magnetic Turbulence  

Science Journals Connector (OSTI)

We examine magnetic surfaces and randomization of field lines with fluctuations transverse to a uniform magnetic field. Analogy with passive scalar transport in inviscid 2D flow provides realizations of magnetic surfaces and motivates a nonperturbative statistical approach. The stochastic wandering of magnetic field lines leads to diffusive perpendicular transport. For two-component fluctuations, appropriate for solar wind turbulence, the diffusion coefficient is a nonadditive combination of slab and 2D coefficients, approaching the latter in the small amplitude limit.

W. H. Matthaeus; P. C. Gray; D. H. Pontius; Jr.; J. W. Bieber

1995-09-11T23:59:59.000Z

296

Applied Field Research Initiative Attenuation Based Remedies  

Broader source: Energy.gov (indexed) [DOE]

PA00133 - March 2011 PA00133 - March 2011 Applied Field Research Initiative Attenuation Based Remedies in the Subsurface Located at the Savannah River Site in Aiken, South Carolina, the Attenuation-Based Remedies in the Subsurface Applied Field Research Initiative (ABRS AFRI) was established to develop the tools, approaches and technologies that will be required to address the technical challenges associated characteriza- tion, remediation and long-term monitoring of recalcitrant compounds in the subsurface at Department of Energy (DOE) Environmental Management (EM) sites. The ABRS AFRI site provides a unique setting for researchers in both applied and basic science fields. A wealth of subsurface data is available to support research activities and remedial decision making.

297

One approach to artificial photosynthesis  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

One approach to artificial photosynthesis Authors: Llansola-Portols, M.J., Palacios, R.E., Kodis, G., Megiatto, J.D., Moore, A.L., Moore, T. A., and Gust, D. Title: One approach...

298

THE GALACTIC MAGNETIC FIELD  

SciTech Connect (OSTI)

With this Letter, we complete our model of the Galactic magnetic field (GMF), by using the WMAP7 22 GHz total synchrotron intensity map and our earlier results to obtain a 13-parameter model of the Galactic random field, and to determine the strength of the striated random field. In combination with our 22-parameter description of the regular GMF, we obtain a very good fit to more than 40,000 extragalactic Faraday rotation measures and the WMAP7 22 GHz polarized and total intensity synchrotron emission maps. The data call for a striated component to the random field whose orientation is aligned with the regular field, having zero mean and rms strength Almost-Equal-To 20% larger than the regular field. A noteworthy feature of the new model is that the regular field has a significant out-of-plane component, which had not been considered earlier. The new GMF model gives a much better description of the totality of data than previous models in the literature.

Jansson, Ronnie; Farrar, Glennys R. [Center for Cosmology and Particle Physics, Department of Physics, New York University, New York, NY 10003 (United States)

2012-12-10T23:59:59.000Z

299

Analysis Driven Field Testing  

Broader source: Energy.gov (indexed) [DOE]

ANALYSIS DRIVEN FIELD TESTING ANALYSIS DRIVEN FIELD TESTING Greg Barker, MEP Paul Norton, NERD C.E. Hancock, MEP Building America Residential Energy Efficiency Stakeholder Meeting Austin, TX March 2, 2012 MODELING DRIVEN FIELD TESTING Greg Barker, MEP Paul Norton, NERD C.E. Hancock, MEP Building America Residential Energy Efficiency Stakeholder Meeting Austin, TX March 2, 2012 MODELING DRIVEN MEASUREMENTS Greg Barker, MEP Paul Norton, NERD C.E. Hancock, MEP Building America Residential Energy Efficiency Stakeholder Meeting Austin, TX March 2, 2012 Building America Residential Energy Efficiency Stakeholder Meeting Austin, TX March 2, 2012 "Modeling without measuring lacks credibility. Measuring without modeling lacks generality." Ed Hancock

300

Magnetic Field Viewing Cards  

Science Journals Connector (OSTI)

For some years now laminated cards containing a green magnetically sensitive film have been available from science education suppliers. When held near a magnet these cards appear dark green in regions where the field is perpendicular to the card and light green where the field is parallel to the card. The cards can be used to explore the magnetic field near a variety of magnets as well as near wire loops. In this paper we describe how to make these cards and how we have used them in our physics classrooms and labs.

Stephen Kanim; John R. Thompson

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Climate change impacts in multispecies systems: drought alters food web size structure in a field experiment  

Science Journals Connector (OSTI)

...multispecies systems: drought alters food web size structure in a field experiment Guy...intergenerational field manipulations of entire food webs are scarce, yet such approaches are essential...replicated field trial, to measure food web responses to simulated climate change...

2012-01-01T23:59:59.000Z

302

Spectroscopic Method for Measuring Plasma Magnetic Fields Having Arbitrary Distributions of Direction and Amplitude  

E-Print Network [OSTI]

Spectroscopic Method for Measuring Plasma Magnetic Fields Having Arbitrary Distributions of Science, Rehovot 76100, Israel (Received 21 December 2006; published 31 May 2007) An approach for measurements of magnetic fields, based on the comparison of the magnetic-field- induced contributions

303

New Approaches in Brain-Computer Music Interfacing  

E-Print Network [OSTI]

New Approaches in Brain-Computer Music Interfacing Mapping EEG for Real-Time Musical Control Eaton-going research into the creation of performance and compositional tools using a Brain- Computer Music Interface) for performance, and highlights the need for further practice-led research in this field. Keywords- brain, music

Miranda, Eduardo Reck

304

Observational Approach to Chromium Site Remediation - 13266  

SciTech Connect (OSTI)

Production reactors at the U.S. Department of Energy's (DOE) Hanford Site in Richland, Washington, required massive quantities of water for reactor cooling and material processing. To reduce corrosion and the build-up of scale in pipelines and cooling systems, sodium dichromate was added to the water feedstock. Spills and other releases at the makeup facilities, as well as leaks from miles of pipelines, have led to numerous areas with chromium-contaminated soil and groundwater, threatening fish populations in the nearby Columbia River. Pump-and-treat systems have been installed to remove chromium from the groundwater, but significant contamination remain in the soil column and poses a continuing threat to groundwater and the Columbia River. Washington Closure Hanford, DOE, and regulators are working on a team approach that implements the observational approach, a strategy for effectively dealing with the uncertainties inherent in subsurface conditions. Remediation of large, complex waste sites at a federal facility is a daunting effort. It is particularly difficult to perform the work in an environment of rapid response to changing field and contamination conditions. The observational approach, developed by geotechnical engineers to accommodate the inherent uncertainties in subsurface conditions, is a powerful and appropriate method for site remediation. It offers a structured means of quickly moving into full remediation and responding to the variations and changing conditions inherent in waste site cleanups. A number of significant factors, however, complicate the application of the observational approach for chromium site remediation. Conceptual models of contamination and site conditions are difficult to establish and get consensus on. Mid-stream revisions to the design of large excavations are time-consuming and costly. And regulatory constraints and contract performance incentives can be impediments to the flexible responses required under the observational approach. The WCH project team is working closely with stakeholders and taking a number of steps to meet these challenges in a continuing effort to remediate chromium contaminated soil in an efficient and cost-effective manner. (authors)

Scott Myers, R. [Washington Closure Hanford, 2620 Fermi, Richland, Washington 99354 (United States)] [Washington Closure Hanford, 2620 Fermi, Richland, Washington 99354 (United States)

2013-07-01T23:59:59.000Z

305

Carlsbad Field Office  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of the ORNLCCP Dear Mr. Kieling: This letter transmits the Final Audit Report for Carlsbad Field Office (CBFO) Audit A-14-03 of the Oak Ridge National Laboratory (ORNL) Central...

306

Temporary Hourly Archaeological Field  

E-Print Network [OSTI]

, conduct applied research, and offer career development and learning opportunities to support resource carpooled. RESPONSIBILITIES Under the general direction of the CEMML archaeological Crew Chief, conduct archaeological field work involving archaeological inventory survey operations on various tracts of military

307

Intelligent field emission arrays  

E-Print Network [OSTI]

Field emission arrays (FEAs) have been studied extensively as potential electron sources for a number of vacuum microelectronic device applications. For most applications, temporal current stability and spatial current ...

Hong, Ching-yin, 1973-

2003-01-01T23:59:59.000Z

308

subsurface geological field | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

transport of U(VI) at the field-scale. The results indicate that multi-rate U(VI) sorptiondesorption, U(VI) surface complexation reactions, and initial U(VI) concentrations...

309

EMSL - subsurface geological field  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

transport of U(VI) at the field-scale. The results indicate that multi-rate U(VI) sorptiondesorption, U(VI) surface complexation reactions, and initial U(VI) concentrations...

310

Field Theory of Matter  

Science Journals Connector (OSTI)

A speculative field theory of matter is developed. Simple computational methods are used in a preliminary survey of its consequences. The theory exploits the known properties of leptons by means of a principle of symmetry between electrical and nucleonic charge. There are fundamental fields with spins 0, , 1. The spinless field is neutral. Spin and 1 fields can carry both electrical and nucleonic charge. The multiplicity of any nonzero charge is 3. Explicit dynamical mechanisms for the breakdown of unitary symmetry and for the muon-electron mass difference are given. A more general view of lepton properties is proposed. Mass relations for baryon and meson multiplets are derived, together with approximate couplings among the multiplets. The weakness of ? production in ?-N collisions and the suppression of the ???+? decay is explained.

Julian Schwinger

1964-08-10T23:59:59.000Z

311

Dangerous electromagnetic fields?  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Dangerous electromagnetic fields? Dangerous electromagnetic fields? Name: Tommy T Joseph Location: N/A Country: N/A Date: N/A Question: Why are electromagnetic fields supposedly dangerous? Replies: I assume you are asking about power line frequency (60 Hz) fields, since they have been in the news lately. No one knows for sure that they are dangerous. There have been a few studies which seem to show an association between how close homes are to power lines, and the incidence of childhood cancer (mostly leukemia) in children living (or who have lived) in those homes. Other similar studies have not found such an association. In all the studies which have found an association, none has actually measured the fields. Studies which actually have measured the fields find no association. There is no known mechanism for 60 Hz fields to cause cancer. Furthermore, the classic "dose-response relationship," that is, the greater the dose, the greater the response, does not seem to work here. Many laboratory studies have found that 60 Hz fields have an effect on organisms under certain conditions, but none of the observed effects can be convincingly related to a hazard. The bottom line is, no one knows for sure. It is important to realize that it is impossible to prove that anything is completely safe. My personal opinion is that, if there is a risk, it must be very small, or it wouldn't be so hard to prove. I can supply some good unbiased references if you are interested.

312

Generalized Bogoliubov transformation for confined fields: Applications for the Casimir effect  

SciTech Connect (OSTI)

The Bogoliubov transformation in thermofield dynamics, an operator formalism for the finite-temperature quantum field theory, is generalized to describe a field in arbitrary confined regions of space and time. Starting with the scalar field, the approach is extended to the electromagnetic field and the energy-momentum tensor is written via the Bogoliubov transformation. In this context, the Casimir effect is calculated for zero and nonzero temperature, and therefore it can be considered as a vacuum condensation effect of the electromagnetic field. This aspect opens an interesting perspective for using this procedure as an effective scheme for calculations in the studies of confined fields, including interacting fields.

Silva, J.C. da [Instituto de Fisica, Universidade Federal da Bahia, Campus de Ondina, 40210-340, Salvador, Bahia (Brazil); Centro Federal de Educacao Tecnologica da Bahia, Rua Emidio Santos, 40000-900, Salvador, Bahia (Brazil); Khanna, F.C. [Physics Department, Theoretical Physics Institute, University of Alberta, Edmonton, Alberta, T6G 2J1 (Canada); TRIUMF, 4004, Westbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada); Matos Neto, A. [Instituto de Fisica, Universidade Federal da Bahia, Campus de Ondina, 40210-340, Salvador, Bahia (Brazil); Santana, A.E. [Instituto de Fisica, Universidade Federal da Bahia, Campus de Ondina, 40210-340, Salvador, Bahia (Brazil); Physics Department, Theoretical Physics Institute, University of Alberta, Edmonton, Alberta, T6G 2J1 (Canada)

2002-11-01T23:59:59.000Z

313

Metering Approaches | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Approaches Approaches Metering Approaches October 7, 2013 - 9:24am Addthis Metering approaches vary depending on facility design and intended purpose (e.g., administrative offices, laboratory, warehouse, etc.). No one approach fits all applications. In fact, different approaches are often needed at different times. For example, a different approach is needed depending on whether the program is trying to verify utility rates, implement demand response or load management programs, or support certification efforts. One-Time Measurements One-time measurements are useful in many baseline activities to understand instantaneous energy use, equipment performance, or loading. These measurements become particularly useful in trending equipment performance over time. For example, one-time measurements are useful when an energy-efficiency

314

The United Nations' Approach To Geothermal Resource Assessment | Open  

Open Energy Info (EERE)

United Nations' Approach To Geothermal Resource Assessment United Nations' Approach To Geothermal Resource Assessment Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: The United Nations' Approach To Geothermal Resource Assessment Details Activities (2) Areas (1) Regions (0) Abstract: Although the emphasis of United Nations' assisted geothermal projects has been on demonstrating the feasibility of producing geothermal fluids, the potential capacity of individual fields has been estimated by both the energy in place and decline curve methods. The energy in place method has been applied to three geothermal fields resulting in total resource estimates ranging from 380 to 16,800 MW-yr. The results of these studies must be considered highly tentative, however, due to inadequate reservoir data and a poor knowledge of producing mechanisms. The decline

315

Magnetic Fields Analogous to electric field, a magnet  

E-Print Network [OSTI]

characteristic of elementary particles such as an electron #12;Magnetic Fields Magnetic field lines Direction;Magnetic Fields Magnetic field lines enter one end (south) of magnet and exit the other end (north) Opposite magnetic poles attract like magnetic poles repel #12;Like the electric field lines

Bertulani, Carlos A. - Department of Physics and Astronomy, Texas A&M University

316

Near-field radiative heat transfer for structured surfaces  

E-Print Network [OSTI]

We apply an analytical approach for determining the near-field radiative heat transfer between a metallic nanosphere and a planar semi-infinite medium with some given surface structure. This approach is based on a perturbative expansion, and evaluated to first order in the surface profile. With the help of numerical results obtained for some simple model geometries we discuss typical signatures that should be obtainable with a near-field scanning thermal microscope operated in either constant-height or constant-distance mode.

Svend-Age Biehs; Oliver Huth; Felix Rting

2011-03-15T23:59:59.000Z

317

Interacting quintessence from a variational approach Part I: algebraic couplings  

E-Print Network [OSTI]

We present a new approach to build models of quintessence interacting with dark or baryonic matter. We use a variational approach for relativistic fluids to realize an effective description of matter fields at the Lagrangian level. The coupling is introduced directly in the action by considering a single function mixing the dynamical degrees of freedom of the theory. The resulting gravitational field equations are derived by variations with respect to the independent variables. New interesting phenomenology can be obtained at both small scales, where new screening mechanisms for scalar fields can be realized, and large scales, where one finds an original and rich class of interacting quintessence models. The background cosmology of two of these models is studied in detail using dynamical system techniques. We find a variety of interesting results: for instance, these models contain dark energy dominated late time attractors and scaling solutions, both with early time matter dominated epochs and a possible inf...

Boehmer, Christian G; Wright, Matthew

2015-01-01T23:59:59.000Z

318

AC Electrostatic Field Study : Final Report.  

SciTech Connect (OSTI)

The phenomenon of fast transients propagating to the outer sheath of a gas insulated substation (GIS) during switching and disconnect operations as well as the distortion of the electric field gradient around an electric transmission line in the presence of field measuring equipment are examples of electrostatic and electromagnetic field problems that are very much on the minds of both power engineers and maintenance personnel alike. Maintenance personnel working on high voltage equipment want to know the areas that have the highest electric field strength gradients and they want to reduce the risk of being shocked when touching a conventionally 60 Hz grounded GIS enclosure due to fast transients initiated by faults and switching operations. In studying these phenomena during the performance period of this grant, tower configurations for the electric field strength gradient measurements were tested with the ESURF3D program acquired from BPA and gas insulated substation test pole (GISTP) models were tested using the Alternative Transients Program (ATP) version Electromagnets Transients Program (EMTP). The results of these two modeling paradigms are presented in this report not as the last word on these subjects, but as a couple of the many ways one can approach two classical electromagnetic waves problems. 19 refs., 13 figs., 3 tabs.

Lebby, Gary L.

1990-08-28T23:59:59.000Z

319

Biobjective optimization for general oil field development  

Science Journals Connector (OSTI)

Abstract The optimization of oil field development and production planning typically requires the consideration of multiple, possibly conflicting, objectives. For example, in a waterflooding project, we might seek to maximize oil recovery and minimize water injection. It is therefore important to devise and test optimization procedures that consider two or more objectives in the determination of optimal development and production plans. In this work we present an approach for field development optimization with two objectives. A single-objective product formulation, which systematically combines the two objectives in a sequence of single-objective optimization problems, is applied. The method, called BiPSOMADS, utilizes at its core our recently developed PSOMADS (Particle Swarm OptimizationMesh Adaptive Direct Search) hybrid optimization algorithm. This derivative-free procedure has been shown to be effective for the solution of generalized field development and well control problems that include categorical, discrete and continuous variables along with general (nonlinear) constraints. Four biobjective field development and well control examples are solved using BiPSOMADS. These examples include problems that consider the maximization of both net present value and cumulative oil production, and the maximization of both long-term and short-term reservoir performance. An example that highlights the applicability of biobjective optimization for field development under geological uncertainty is also presented. This usage of BiPSOMADS enables us to maximize expected reservoir performance while reducing the risk associated with the worst-case scenario.

Obiajulu J. Isebor; Louis J. Durlofsky

2014-01-01T23:59:59.000Z

320

The coordinate coherent states approach revisited  

SciTech Connect (OSTI)

We revisit the coordinate coherent states approach through two different quantization procedures in the quantum field theory on the noncommutative Minkowski plane. The first procedure, which is based on the normal commutation relation between an annihilation and creation operators, deduces that a point mass can be described by a Gaussian function instead of the usual Dirac delta function. However, we argue this specific quantization by adopting the canonical one (based on the canonical commutation relation between a field and its conjugate momentum) and show that a point mass should still be described by the Dirac delta function, which implies that the concept of point particles is still valid when we deal with the noncommutativity by following the coordinate coherent states approach. In order to investigate the dependence on quantization procedures, we apply the two quantization procedures to the Unruh effect and Hawking radiation and find that they give rise to significantly different results. Under the first quantization procedure, the Unruh temperature and Unruh spectrum are not deformed by noncommutativity, but the Hawking temperature is deformed by noncommutativity while the radiation specturm is untack. However, under the second quantization procedure, the Unruh temperature and Hawking temperature are untack but the both spectra are modified by an effective greybody (deformed) factor. - Highlights: Black-Right-Pointing-Pointer Suggest a canonical quantization in the coordinate coherent states approach. Black-Right-Pointing-Pointer Prove the validity of the concept of point particles. Black-Right-Pointing-Pointer Apply the canonical quantization to the Unruh effect and Hawking radiation. Black-Right-Pointing-Pointer Find no deformations in the Unruh temperature and Hawking temperature. Black-Right-Pointing-Pointer Provide the modified spectra of the Unruh effect and Hawking radiation.

Miao, Yan-Gang, E-mail: miaoyg@nankai.edu.cn; Zhang, Shao-Jun, E-mail: sjzhang@mail.nankai.edu.cn

2013-02-15T23:59:59.000Z

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Macroscopic displaced thermal field as the entanglement catalyst  

E-Print Network [OSTI]

We show that entanglement of multiple atoms can arise via resonant interaction with a displaced thermal field with a macroscopic photon-number. The cavity field acts as the catalyst, which is disentangled with the atomic system after the operation. Remarkably, the entanglement speed does not decrease as the average photon-number of the mixed thermal state increases. The atoms may evolve to a highly entangled state even when the photon-number of the cavity mode approaches infinity.

Shi-Biao Zheng

2012-03-07T23:59:59.000Z

322

Macroscopic displaced thermal field as the entanglement catalyst  

E-Print Network [OSTI]

We show that entanglement of multiple atoms can arise via resonant interaction with a displaced thermal field with a macroscopic photon-number. The cavity field acts as the catalyst, which is disentangled with the atomic system after the operation. Remarkably, the entanglement speed does not decrease as the average photon-number of the mixed thermal state increases. The atoms may evolve to a highly entangled state even when the photon-number of the cavity mode approaches infinity.

Zheng, Shi-Biao

2012-01-01T23:59:59.000Z

323

Evolution of fields in a second order phase transition  

Science Journals Connector (OSTI)

We analyze the evolution of scalar and gauge fields during a second order phase transition using a Langevin equation approach. We show that topological defects formed during the phase transition are stable to thermal fluctuations. Our method allows the field evolution to be followed throughout the phase transition, for both expanding and nonexpanding universes. The results verify the Kibble mechanism for defect formation during phase transitions.

Adrian Martin and Anne-Christine Davis

1995-09-15T23:59:59.000Z

324

MARKET BASED APPROACHES | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

MARKET BASED APPROACHES MARKET BASED APPROACHES Presentation on Market Based Approaches given by K. G. Duleep of Energy and Environmental Analysis, Inc. during the DOE Hydrogen...

325

Field Operations Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

688 688 May 1999 Field Operations Program Activities Status Report Fiscal Years 1997 through mid-1999 J. E. Francfort D. V. O'Hara L. A. Slezak DOE/ID-10688 Field Operations Program Activities Status Report Fiscal Years 1997 through mid-1999 J. E. Francfort 1 D. V. O'Hara 2 L. A. Slezak 2 Published May 1999 Idaho National Engineering and Environmental Laboratory Automotive Systems and Technology Department Lockheed Martin Idaho Technologies Company Idaho Falls, Idaho 83415 Prepared for the U.S. Department of Energy Idaho Operations Office 1 INEEL/Lockheed Martin Idaho Technologies Co. 2 U.S. Department of Energy iii EXECUTIVE SUMMARY The Field Operations Program is an electric vehicle testing and evaluation program sponsored by U.S. Department of Energy and managed by the Idaho National Engineering and Environmental

326

Coherence of neutron fields  

Science Journals Connector (OSTI)

Glauber's definition of quantum coherence is used for neutron fields under the assumption that the complete occupation number space is a direct product of Fermi subspaces. As a result, completely coherent microfields are obtained which define a density operator in full analogy to Glauber's P representation of boson fields. For better physical significance, a transformation from the P representation to a momentum representation is performed. It is proved that the second-order coherence function in this representation is equivalent to Wolf's second-order coherence function of a classical Dirac field. Finally, the results of the theory are used to calculate explicitly the second-order coherence function and the coherence time of an ideally collimated neutron beam.

E. Ledinegg and E. Schachinger

1983-05-01T23:59:59.000Z

327

Pulsed hybrid field emitter  

DOE Patents [OSTI]

A hybrid emitter exploits the electric field created by a rapidly depoled ferroelectric material. Combining the emission properties of a planar thin film diamond emitter with a ferroelectric alleviates the present technological problems associated with both types of emitters and provides a robust, extremely long life, high current density cathode of the type required by emerging microwave power generation, accelerator technology and display applications. This new hybrid emitter is easy to fabricate and not susceptible to the same failures which plague microstructure field emitter technology. Local electrode geometries and electric field are determined independently from those for optimum transport and brightness preservation. Due to the large amount of surface charge created on the ferroelectric, the emitted electrons have significant energy, thus eliminating the requirement for specialized phosphors in emissive flat-panel displays.

Sampayan, Stephen E. (Manteca, CA)

1998-01-01T23:59:59.000Z

328

Quantized Gravitational Field  

Science Journals Connector (OSTI)

A gravitational action operator is constructed that is invariant under general coordinate transformations and local Lorentz (gauge) transformations. To interpret the formalism the arbitrariness in description must be restricted by introducing gauge conditions and coordinate conditions. The time gauge is defined by locking the time axes of the local coordinate systems to the general coordinate time axis. The resulting form of the action operator, including the contribution of a spinless matter field, enables canonical pairs of variables to be identified. There are four field variables that lack canonical partners, in virtue of differential constraint equations, which can be interpreted as space-time coordinate displacements. In a physically distinguished class of coordinate system the gravitational field variables are not explicit functions of the coordinate displacement parameters. There remains the freedom of Lorentz transformation. The generators of spatial translations and rotations have the correct commutation properties. The question of Lorentz invariance is left undecided since the energy density operator is only given implicitly.

Julian Schwinger

1963-05-01T23:59:59.000Z

329

Fields and Quantum Mechanics  

E-Print Network [OSTI]

The quantum field theories (QFT) constructed in [1,2] include phenomenology of interest. The constructions approximate: scattering by $1/r$ and Yukawa potentials in non-relativistic approximations; and the first contributing order of the Feynman series for Compton scattering. To have a semi-norm, photon states are constrained to transverse polarizations and for Compton scattering, the constructed cross section deviates at large momentum exchanges from the cross section prediction of the Feynman rules. Discussion includes the incompatibility of canonical quantization with the constructed interacting fields, and the role of interpretations of quantum mechanics in realizing QFT.

Glenn Eric Johnson

2014-12-21T23:59:59.000Z

330

Systems biology approach to bioremediation  

E-Print Network [OSTI]

aspects of the systems biology approach (metagenomics withthe use of a number of sytems biology parameters can revealRL, Banfield JF: Systems Biology: functional analysis of

Chakraborty, R.

2013-01-01T23:59:59.000Z

331

Optimization Approaches to Protein Folding.  

E-Print Network [OSTI]

??This research shows optimization approaches to protein folding. The protein folding problem is to predict the compact three dimensional structure of a protein based on (more)

Yoon, Hyun-suk

2006-01-01T23:59:59.000Z

332

Computational Creativity: A Philosophical Approach, and an Approach to Philosophy  

E-Print Network [OSTI]

Computational Creativity: A Philosophical Approach, and an Approach to Philosophy Stephen McGregor, Geraint Wiggins and Matthew Purver School of Electronic Engineering and Computer Science Queen Mary This paper seeks to situate computational creativity in relation to philosophy and in particular philosophy

Purver, Matthew

333

SP - 19 Magnetic Field Safety  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

19 Page 1 Revision 02 August 6, 2007 NATIONAL HIGH MAGNETIC FIELD LABORATORY NHMFL FLORIDA STATE UNIVERSITY SAFETY PROCEDURE SP-19 MAGNETIC FIELD SAFETY ...

334

Maxwell field with Torsion  

E-Print Network [OSTI]

We propose a generalizing gauge-invariant model of propagating torsion which couples to the Maxwell field and to charged particles. As a result we have an Abelian gauge invariant action which leads to a theory with nonzero torsion and which is consistent with available experimental data.

R. Fresneda; M. C. Baldiotti; T. S. Pereira

2014-08-02T23:59:59.000Z

335

Electromagnetic Field Theory  

E-Print Network [OSTI]

physicists around the world and from WWW `hit' statistics it seems that the book serves as a frequently used formulation of classical electrodynamics, force, momentum and energy of the electromagnetic field, radiation and scope to make it useful in higher university education anywhere in the world, it was produced within

Hart, Gus

336

Home Workspace Field Description  

E-Print Network [OSTI]

Proposal Management Reviewer Home Workspace Field Description Last updated: 4/1/2013 1 of 2 http://eresearch.umich.edu Proposal Management Reviewer Home Workspace Your Home Workspace is your launch pad for eResearch Proposal to the project. Who Can See the Reviewer Home Workspace: People with Reviewer or Reviewer Who Can Sign access

Shyy, Wei

337

Bacteriochlorophyll in Electric Field  

Science Journals Connector (OSTI)

We have used time dependent density functional theory (TDDFT) and a multilevel perturbation model to study the transition energies, polarizability, and dipole moments of a bacteriochlorophyll in an electric field. ... coupling strengths yield Car(S1)-to-BChl(Qy) excitation energy transfer times that are in good agreement with recent exptl. ...

Pr Kjellberg; Zhi He; Tnu Pullerits

2003-11-15T23:59:59.000Z

338

Facilities Management Field Services  

E-Print Network [OSTI]

that have gone on there in 2006. My department, Geological Sciences, makes use of all of the field stations the geology of the Australian Plate. Stakeholders who employ geoscience graduates tell use loud and clear of Earth Sciences, ANU, Canberra, to determine the crystallization ages of rocks and minerals using uranium

Hickman, Mark

339

Kinetic Stability of the Field Reversed Configuration  

SciTech Connect (OSTI)

New computational results are presented which advance the understanding of the stability properties of the Field-Reversed Configuration (FRC). The FRC is an innovative confinement approach that offers a unique fusion reactor potential because of its compact and simple geometry, translation properties, and high plasma beta. One of the most important issues is FRC stability with respect to low-n (toroidal mode number) MHD modes. There is a clear discrepancy between the predictions of standard MHD theory that many modes should be unstable on the MHD time scale, and the observed macroscopic resilience of FRCs in experiments.

E.V. Belova; R.C. Davidson; H. Ji; and M. Yamada

2002-07-09T23:59:59.000Z

340

Combinatorial Approaches for Hydrogen Storage Materials (presentation...  

Broader source: Energy.gov (indexed) [DOE]

Combinatorial Approaches for Hydrogen Storage Materials (presentation) Combinatorial Approaches for Hydrogen Storage Materials (presentation) Presentation on NIST Combinatorial...

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Quantum field theory over F1  

E-Print Network [OSTI]

In this paper we discuss some questions about geometry over the field with one element, motivated by the properties of algebraic varieties that arise in perturbative quantum field theory. We follow the approach to F1-geometry based on torified schemes. We first discuss some simple necessary conditions in terms of Euler characteristic and classes in the Grothendieck ring, then we give a blowup formula for torified varieties and we show that the wonderful compactifications of the graph configuration spaces, that arise in the computation of Feynman integrals in position space, admit an F1-structure. By a similar argument we show that the moduli spaces of curves of genus zero with n marked points admit an F1-structure. We also discuss conditions on hyperplane arrangements, a possible notion of embedded F1-structure and its relation to Chern classes, and questions on Chern classes of varieties with regular torifications.

Dori Bejleri; Matilde Marcolli

2012-09-21T23:59:59.000Z

342

Gauge Fields, Sources, and Electromagnetic Masses  

Science Journals Connector (OSTI)

The hypothesis of strong-interaction gauge fields, with non-Abelian gauge invariance broken only by the 1- particle mass terms, gives a natural source theory setting for the introduction of electromagnetic effects. The electromagnetic potential vector appears as a compensating field in the mass terms of the neutral 1- particles. The resulting electromagnetic self-action is used to discuss mass displacements. The pion electro-magnetic mass is computed in a number of waysby direct calculation of various processes and by chiral methods, in two variants. The relationship of these approaches is established. A phenomenological modification of the chiral evaluation gives perfect agreement with the observed value. It is found, however, that the (m?m?)2 terms, which are neglected in this method, are not very small. Baryon electromagnetic mass splittings are described by a simple adaptation of gross mass-spectrum empirics. Agreement with the data is excellent.

Julian Schwinger

1968-01-25T23:59:59.000Z

343

On thermodynamically consistent schemes for phase field equations  

E-Print Network [OSTI]

and at the phase change front. A somewhat different approach of Charach and Zemel [2] combines bal- ance equationsOn thermodynamically consistent schemes for phase field equations C. Charach and P. C. Fife thermodynamics. The principal applications are to the solidification of a pure material and of a binary alloy

Fife, Paul

344

Modeling Spatial-Temporal Binary Data Using Markov Random Fields  

E-Print Network [OSTI]

Modeling Spatial-Temporal Binary Data Using Markov Random Fields Jun Zhu Department of Statistics to the autologistic model for spatial-temporal binary data. The model we propose is a Markov chain across time, where discuss the generality of our approach for modeling other types of spatial-temporal lattice data. Keywords

Huang, Su-Yun

345

Deep Vadose Zone Applied Field Research Initiative (DVZ AFRI) - Overview  

SciTech Connect (OSTI)

The Deep Vadoze Zone Applied Field Research Initiative (DVZ AFRI) was established to protect water resources and to address the challenge of preventing contamination in the deep vadose zone from reaching groundwater. This factsheet provides an overview of the initiative and the approach to integrate basic science and needs-driven applied research activities with cleanup operations.

none,

2011-02-01T23:59:59.000Z

346

Image retrieval using Markov Random Fields and global image features  

Science Journals Connector (OSTI)

In this paper, we propose a direct image retrieval framework based on Markov Random Fields (MRFs) that exploits the semantic context dependencies of the image. The novelty of our approach lies in the use of different kernels in our non-parametric density ... Keywords: Markov processes, nonparametric statistics

Ainhoa Llorente; R. Manmatha; Stefan Rger

2010-07-01T23:59:59.000Z

347

Conditional Random Fields for Morphological Analysis of Wireless ECG Signals  

E-Print Network [OSTI]

Conditional Random Fields for Morphological Analysis of Wireless ECG Signals Annamalai Natarajan recording of ECG signals. This capability has diverse applications in the study of human health and behavior present a novel approach to the problem of extracting the morphological structure of ECG signals based

Massachusetts at Amherst, University of

348

Developing Novel Approaches to Tamper & Intrusion Detection - Nuclear  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Developing Novel Approaches to Developing Novel Approaches to Tamper & Intrusion Detection VAT Projects Introducing the VAT Adversarial Vulnerability Assessments Safety Tags & Product Counterfeiting Election Security Spoofing GPS Defeating Existing Tamper-Indicating Seals Specialty Field Tools & Sampling Tools Tamper & Intrusion Detection Rapid Sampling from Sealed Containers Demo video Insider Threat Mitigation Drug Testing Security Microprocessor Prototypes The Journal of Physical Security Vulnerability Assessments Vulnerability Assessments Insanely Fast µProcessor Shop Insanely Fast µProcessor Shop Seals About Seals Applications of Seals Common Myths about Tamper Indicating Seals Definitions Findings and Lessons Learned New Seals Types of Seals Seals References Selected VAT Papers Selected VAT Papers

349

Methane Hydrate Field Program  

SciTech Connect (OSTI)

This final report document summarizes the activities undertaken and the output from three primary deliverables generated during this project. This fifteen month effort comprised numerous key steps including the creation of an international methane hydrate science team, determining and reporting the current state of marine methane hydrate research, convening an international workshop to collect the ideas needed to write a comprehensive Marine Methane Hydrate Field Research Plan and the development and publication of that plan. The following documents represent the primary deliverables of this project and are discussed in summary level detail in this final report. Historical Methane Hydrate Project Review Report Methane Hydrate Workshop Report Topical Report: Marine Methane Hydrate Field Research Plan Final Scientific/Technical Report

None

2013-12-31T23:59:59.000Z

350

Ca rlsbad Field Office  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

En ergy En ergy Ca rlsbad Field Office P. O . Box 3090 Carlsbad , New Mexico 88221 AUG 2 9 2013 Mr. John E. Kieling , Chief Hazardous Waste Bureau New Mexico Environment Department 2905 Rodeo Park Drive East, Building 1 Santa Fe, New Mexico 87505-6303 Subject: Notification of Class 1 Permit Modification to the Waste Isolation Pilot Plant Hazardous Waste Facility Permit Number: NM4890139088-TSDF

351

Microbial field pilot study  

SciTech Connect (OSTI)

The objective of this project is to perform a microbial enhanced oil recovery field pilot in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate reducing bacteria will be stimulated to selectively plug flow paths which have been referentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. This report covers progress made during the second year, January 1, 1990 to December 31, 1990, of the Microbial Field Pilot Study project. Information on reservoir ecology, surface facilities design, operation of the unit, core experiments, modeling of microbial processes, and reservoir characterization and simulation are presented in the report. To better understand the ecology of the target reservoir, additional analyses of the fluids which support bacteriological growth and the microbiology of the reservoir were performed. The results of the produced and injected water analysis show increasing sulfide concentrations with respect to time. In March of 1990 Mesa Limited Partnership sold their interest in the SEVVSU to Sullivan and Company. In April, Sullivan and Company assumed operation of the field. The facilities for the field operation of the pilot were refined and implementation was begun. Core flood experiments conducted during the last year were used to help define possible mechanisms involved in microbial enhanced oil recovery. The experiments were performed at SEVVSU temperature using fluids and inoculum from the unit. The model described in last year`s report was further validated using results from a core flood experiment. The model was able to simulate the results of one of the core flood experiments with good quality.

Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Chisholm, J.L.

1992-03-01T23:59:59.000Z

352

Microbial field pilot study  

SciTech Connect (OSTI)

The objective of this project is to perform a microbial enhanced oil recovery field pilot in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate reducing bacteria will be stimulated to selectively plug flow paths which have been referentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. This report covers progress made during the second year, January 1, 1990 to December 31, 1990, of the Microbial Field Pilot Study project. Information on reservoir ecology, surface facilities design, operation of the unit, core experiments, modeling of microbial processes, and reservoir characterization and simulation are presented in the report. To better understand the ecology of the target reservoir, additional analyses of the fluids which support bacteriological growth and the microbiology of the reservoir were performed. The results of the produced and injected water analysis show increasing sulfide concentrations with respect to time. In March of 1990 Mesa Limited Partnership sold their interest in the SEVVSU to Sullivan and Company. In April, Sullivan and Company assumed operation of the field. The facilities for the field operation of the pilot were refined and implementation was begun. Core flood experiments conducted during the last year were used to help define possible mechanisms involved in microbial enhanced oil recovery. The experiments were performed at SEVVSU temperature using fluids and inoculum from the unit. The model described in last year's report was further validated using results from a core flood experiment. The model was able to simulate the results of one of the core flood experiments with good quality.

Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Chisholm, J.L.

1992-03-01T23:59:59.000Z

353

Microbial Field Pilot Study  

SciTech Connect (OSTI)

This report covers progress made during the first year of the Microbial Field Pilot Study project. Information on reservoir ecology and characterization, facility and treatment design, core experiments, bacterial mobility, and mathematical modeling are addressed. To facilitate an understanding of the ecology of the target reservoir analyses of the fluids which support bacteriological growth and the microbiology of the reservoir were performed. A preliminary design of facilities for the operation of the field pilot test was prepared. In addition, procedures for facilities installation and for injection treatments are described. The Southeast Vassar Vertz Sand Unit (SEVVSU), the site of the proposed field pilot study, is described physically, historically, and geologically. The fields current status is presented and the ongoing reservoir simulation is discussed. Core flood experiments conducted during the last year were used to help define possible mechanisms involved in microbial enhanced oil recovery. Two possible mechanisms, relative permeability effects and changes in the capillary number, are discussed and related to four Berea core experiments' results. The experiments were conducted at reservoir temperature using SEVVSU oil, brine, and bacteria. The movement and activity of bacteria in porous media were investigated by monitoring the growth of bacteria in sandpack cores under no flow conditions. The rate of bacteria advancement through the cores was determined. A mathematical model of the MEOR process has been developed. The model is a three phase, seven species, one dimensional model. Finite difference methods are used for solution. Advection terms in balance equations are represented with a third- order upwind differencing scheme to reduce numerical dispersion and oscillations. The model is applied to a batch fermentation example. 52 refs., 26 figs., 21 tabs.

Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Chisholm, J.L.

1990-11-01T23:59:59.000Z

354

Reliability of the Optimized Perturbation Theory for scalar fields at finite temperature  

SciTech Connect (OSTI)

The thermodynamics of a massless scalar field with a quartic interaction is studied up to third order in the Optimized Perturbation Theory (OPT) method. A comparison with other nonperturbative approaches is performed such that the reliability of OPT is accessed.

Farias, R. L.; Teixeira, D. L. Jr. [Departamento de Ciencias Naturais, Universidade Federal de Sao Joao del Rei, 36301-000 Sao Joao del Rei, MG (Brazil); Ramos, R. O. [Departamento de Fisica Teorica, Universidade do Estado do Rio de Janeiro, 20550-013 Rio de Janeiro, RJ (Brazil)

2013-03-25T23:59:59.000Z

355

Permeability characterization and spatial modeling in complex reservoirs: use of tree classifiers and Markov Random Field  

E-Print Network [OSTI]

. The second approach is the application of Markov Random Field (MRF) for determination of a 3 D high-resolution model of porosity using well logs and seismic attributes. The prediction of permeability is a critical aspect of reservoir characterization...

Perez Vega, Hector H

2012-06-07T23:59:59.000Z

356

Decoupled energy stable schemes for phase-field models of two ...  

E-Print Network [OSTI]

The phase-field approach, whose origin can be traced back to [29] and [38], has ... Another main advantage of energy stable schemes is that they can be easily.

2014-11-11T23:59:59.000Z

357

Lattice Boltzmann method for multiscale self-consistent field theory simulations of block copolymers  

E-Print Network [OSTI]

A new Lattice Boltzmann (LB) approach is introduced to solve for the block copolymer propagator in polymer field theory. This method bridges two desired properties from different numerical techniques, namely: (i) it is ...

Chen, Hsieh

358

Sky coverage of orbital detectors. Analytical approach  

E-Print Network [OSTI]

Orbital detectors without pointing capability have to keep their field of view axis laying on their orbital plane, to observe the largest sky fraction. A general approach to estimate the exposure of each sky element for such detectors is a valuable tool in the R&D phase of a project, when the detector characteristics are still to be fixed. An analytical method to estimate the sky exposure is developed, which makes only few very reasonable approximations. The formulae obtained with this method are used to compute the histogram of the sky exposure of a hypothetical gamma-ray detector installed on the ISS. The C++ code used in this example is freely available on the http://cern.ch/casadei/software.html web page.

Diego Casadei

2005-11-23T23:59:59.000Z

359

New approaches to estimation of magnetotelluric parameters  

SciTech Connect (OSTI)

Fully efficient robust data processing procedures were developed and tested for single station and remote reference magnetotelluric (Mr) data. Substantial progress was made on development, testing and comparison of optimal procedures for single station data. A principal finding of this phase of the research was that the simplest robust procedures can be more heavily biased by noise in the (input) magnetic fields, than standard least squares estimates. To deal with this difficulty we developed a robust processing scheme which combined the regression M-estimate with coherence presorting. This hybrid approach greatly improves impedance estimates, particularly in the low signal-to-noise conditions often encountered in the dead band'' (0.1--0.0 hz). The methods, and the results of comparisons of various single station estimators are described in detail. Progress was made on developing methods for estimating static distortion parameters, and for testing hypotheses about the underlying dimensionality of the geological section.

Egbert, G.D.

1991-01-01T23:59:59.000Z

360

arch layout 11.21.98  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Daylighting algorithms Daylighting algorithms IMAGE imgs/esl375.jpg The tools for describing the performance of daylighting systems are limited, in part because there is currently little research activity within industry and the business community to advance the science of daylighting with "advanced" window systems, such as automated blinds or holographic glazings. A new approach was devised that combined experimen- tal measurements with simulation tools to produce an accurate characterization of interior illuminance levels. This method is combined with an energy simulation engine such as DOE-2 to produce estimates of annual energy usage. The work provided a basis for more flex- ible daylight modeling tools that can ultimately be used by conventional engineering consultants.

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Classical and Quantum Gravity in 1+1 Dimensions, Part I: A Unifying Approach  

E-Print Network [OSTI]

We provide a concise approach to generalized dilaton theories with and without torsion and coupling to Yang-Mills fields. Transformations on the space of fields are used to trivialize the field equations locally. In this way their solution becomes accessible within a few lines of calculation only. In this first of a series of papers we set the stage for a thorough global investigation of classical and quantum aspects of more or less all available 2D gravity-Yang-Mills models.

T. Kloesch; T. Strobl

1997-08-11T23:59:59.000Z

362

Generalized Gravitational Entropy of Interacting Scalar Field and Maxwell Field  

E-Print Network [OSTI]

The generalized gravitational entropy proposed by Lewkowycz and Maldacena in recent is extended to the interacting real scalar field and Maxwell field system. Using the BTZ geometry we first investigate the case of free real scalar field and then show a possible way to calculate the entropy of the interacting scalar field. Next, we investigate the Maxwell field system. We exactly solve the wave equation and calculate the analytic value of the generalized gravitational entropy. We also use the Einstein equation to find the effect of backreaction of the Maxwell field on the area of horizon. The associated modified area law is consistent with the generalized gravitational entropy.

Wung-Hong Huang

2014-11-11T23:59:59.000Z

363

Political side of risk: a new approach  

SciTech Connect (OSTI)

The resolution of many of the Nation's most-serious problems today is hampered by our apparent inability to systematically deal with the socio-political dimensions of the societal acceptance of risks in areas of technical development, decision making, and policy formulation. Nowhere is this more apparent than in the energy field. The nature of public hazards has changed drastically during the past half century or so, driving public considerations of risk into the political realm. This has given many of the socio-political parameters underlying individual, group, and institutional perception and acceptance of risk an importance not typically recognized in technical approaches to risk assessment. As a result, there is now a large gap between technically based views of risk and societal views of risk which, the authors feel, is largely responsible for impeding the resolution of the national problems alluded to above. This paper proposes a general approach toward closing this gap, by using indicators from the political system to measure public perceptions and acceptance of risk, as a continuing function of time, to provide the technical community and policy and decision makers a basis from which to more effectively meet societal environmental, safety, and health goals. 15 references, 6 figures.

Sorenson, J.B.; Trauth, C.A. Jr.

1980-01-01T23:59:59.000Z

364

The Dirac-Brueckner Approach  

E-Print Network [OSTI]

In this review, we give a thorough introduction into the Dirac-Brueckner approach including the mathematical details of the formalism involved. Furthermore, we present results for nuclear matter, NN scattering in the nuclear medium, and finite nuclei.

R. Brockmann; R. Machleidt

1996-12-01T23:59:59.000Z

365

Testing Climate Models: An Approach  

Science Journals Connector (OSTI)

The scientific merit of decadal climate projections can only be established by means of comparisons with observations. Testing of models that are used to predict climate change is of such importance that no single approach will provide the ...

Richard Goody; James Anderson; Gerald North

1998-11-01T23:59:59.000Z

366

A multidisciplinary approach to building  

E-Print Network [OSTI]

A multidisciplinary approach to building implantable neural devices could help blind people see, paralyzed people stand, and even endow robotic limbs with a sense of touch. By Katie Neith #12;21wi nte r

367

The Flexible Learning Approach to Physics (FLAP)  

Science Journals Connector (OSTI)

The Flexible Learning Approach to Physics (FLAP) is an extensive high quality supported self-study teaching resource developed on behalf of the whole UK university sector. FLAP addresses the twin problems of an increasing diversity of intake into physics degree courses and their decreasing familiarity with the use of mathematics in a physical context. It has been developed over a three year period funded ($1M) by the UK Higher Education Funding Councils. It offers a new approach to the teaching of physics and its associated mathematics. FLAP includes 83 free-standing modules of physics and mathematics ranging from pre-university level to some point within the first or second year of a physics or engineering degree course. Its range also makes it useful at upper high school level. It presents an integrated approach to physics and mathematics introducing mathematics within a physical context where possible and sharing a common notation with the physics. FLAP includes about 2500 pages of text with video audio and CAL support and has a Tutor Guide with an electronic question bank of about 1700 questions and solutions. A feature of the resource is that the modular text is photocopiable by departments for their own students giving maximum flexibility of use. Physics departments can use this as they choose to support their present courses or to create new courses of their own design. The FLAP self-study teaching style encourages active learning and gives students more ownership of this learning. Field trials show that it can increase student self-motivation and its style is welcomed. It offers gains in the quality and efficiency of teaching and learning and is expected to make a considerable impact wherever teaching quality has to be maintained or improved particularly with reducing staff resources. FLAP is now being made available world-wide.

R. J. Lambourne; M. H. Tinker; S. A. Windsor

1997-01-01T23:59:59.000Z

368

Golden Field Office  

Broader source: Energy.gov (indexed) [DOE]

Department of Energy Department of Energy Golden Field Office 1617 Cole Boulevard Golden, Colorado 80401-3393 FINDING OF NO SIGNIFICANT IMPACT UNIVERSITY OF MAINE'S DEEPWATER OFFSHORE FLOATING WIND TURBINE TESTING AND DEMONSTRATION PROJECT - CASTINE DOE/EA-1792-S1 AGENCY: U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy ACTION: Finding of No Significant Impact (FONSI) SUMMARY: The U.S. Department of Energy (DOE) has completed a Supplemental Environmental Assessment (Supplemental EA) DOE/EA-1792-S1 for the University of Maine's (UMaine) Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project - Castine. DOE prepared the Supplemental EA to evaluate the potential environmental impacts of

369

National High Magnetic Field Laboratory - Visualizing Field Lines...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Now You See It: Visualizing Field Lines Try This At Home The magnetic field is the area around the magnet where the magnetic forces act. Actually, magnets are made up of many, many...

370

National High Magnetic Field Laboratory - Drawing Field Lines...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A Portrait of Magnetism: Drawing Field Lines Try This At Home Magnets have two poles; the field lines spread out from the north pole and circle back around to the south pole. In...

371

Isoscalar giant monopole in a macroscopic-microscopic approach  

Science Journals Connector (OSTI)

We present an approach to study the interplay between the surface and volume vibrations of nuclei with application to the isoscalar giant monopole resonance. The main ingredients are the well-known properties of the mean field and the curvatures of the liquid-drop energy surface. No specific form of a two-body force is assumed. The single-particle continuum is treated exactly. First results, obtained using a local Woods-Saxon potential, are discussed.

S. Shlomo and P. J. Siemens

1985-06-01T23:59:59.000Z

372

Hybrid approaches to heavy ion collisions and future perspectives  

E-Print Network [OSTI]

We present the current status of hybrid approaches to describe heavy ion collisions and their future challenges and perspectives. First we present a hybrid model combining a Boltzmann transport model of hadronic degrees of freedom in the initial and final state with an optional hydrodynamic evolution during the dense and hot phase. Second, we present a recent extension of the hydrodynamical model to include fluctuations near the phase transition by coupling a chiral field to the hydrodynamic evolution.

Marlene Nahrgang; Christoph Herold; Stefan Schramm; Marcus Bleicher

2011-03-03T23:59:59.000Z

373

Involution and Constrained Dynamics I: The Dirac Approach  

E-Print Network [OSTI]

We study the theory of systems with constraints from the point of view of the formal theory of partial differential equations. For finite-dimensional systems we show that the Dirac algorithm completes the equations of motion to an involutive system. We discuss the implications of this identification for field theories and argue that the involution analysis is more general and flexible than the Dirac approach. We also derive intrinsic expressions for the number of degrees of freedom.

Werner M. Seiler; Robin W. Tucker

1995-06-02T23:59:59.000Z

374

A systematic approach for diagnosing service failure: Service-specific FMEA and grey relational analysis approach  

Science Journals Connector (OSTI)

In any organization, the importance of failure management cannot be mentioned by a single word. However, most failure analysis is dominated by the manufacturing sector, despite the increasing importance of the service sector. In response, this paper proposes a systematic approach for identifying and evaluating potential failures using a service-specific failure mode and effect analysis (service-specific FMEA) and grey relational analysis. The proposed approach consists of two stages: construction of service-specific FMEA and application of grey relational analysis. The first stage, construction of service-specific FMEA, aims at incorporating the service specific characteristics to the traditional FMEA, providing 3 dimensions and 19 sub-dimensions, encompassing the service characteristics. At the second stage, grey relational analysis is applied to calculate the risk priority of each failure mode to deal with the necessities of a flexible evaluation framework under these interrelated multi-dimensions. The proposed approach is expected to help the service managers to manage the service failure within the systematic framework. This paper contributes to the field in that it incorporates the service-specific characteristics to the traditional FMEA, as well as providing the appropriate evaluation framework using grey relational analysis.

Youngjung Geum; Yangrae Cho; Yongtae Park

2011-01-01T23:59:59.000Z

375

Neutrino oscillations: Quantum mechanics vs. quantum field theory  

SciTech Connect (OSTI)

A consistent description of neutrino oscillations requires either the quantum-mechanical (QM) wave packet approach or a quantum field theoretic (QFT) treatment. We compare these two approaches to neutrino oscillations and discuss the correspondence between them. In particular, we derive expressions for the QM neutrino wave packets from QFT and relate the free parameters of the QM framework, in particular the effective momentum uncertainty of the neutrino state, to the more fundamental parameters of the QFT approach. We include in our discussion the possibilities that some of the neutrino's interaction partners are not detected, that the neutrino is produced in the decay of an unstable parent particle, and that the overlap of the wave packets of the particles involved in the neutrino production (or detection) process is not maximal. Finally, we demonstrate how the properly normalized oscillation probabilities can be obtained in the QFT framework without an ad hoc normalization procedure employed in the QM approach.

Akhmedov, Evgeny Kh.; Kopp, Joachim; ,

2010-01-01T23:59:59.000Z

376

Understanding conformal field theory through parafermions and Chern Simons theory  

SciTech Connect (OSTI)

Conformal field theories comprise a vast class of exactly solvable two dimensional quantum field theories. Conformal theories with an enlarged symmetry group, the current algebra symmetry, axe a key ingredient to possible string compactification models. The following work explores a Lagrangian approach to these theories. In the first part of this thesis, a large class of conformal theories, the so-called coset models, are derived semi-classically from a gauged version Of the Wess-Zumino-Witten functional. A non-local field transformation to the parafermionic field description is employed in the quantization procedure. Classically, these parafermionic fields satisfy non-trivial Poisson brackets, providing insight into the fractional spin nature of the conformal theory. The W-algebra symmetry is shown to appear naturally in this approach. In the second part of this thesis, the connection between the fusion algebra structure of Wess-Zumino-Witten models and the quantization of the Chern-Simons action on the torus is made explicit. The modular properties of the conformal model are also derived in this context, giving a natural demonstration of the Verlinde conjecture. The effects of background gauge fields and monopoles are also discussed.

Hotes, S.A.

1992-11-19T23:59:59.000Z

377

Efficient thermal field computation in phase-field models  

Science Journals Connector (OSTI)

We solve the phase-field equations in two dimensions to simulate crystal growth in the low undercooling regime. The novelty is the use of a fast solver for the free space heat equation to compute the thermal field. This solver is based on the efficient ... Keywords: Crystal growth, Dendritic solidification, Diffusion equation, Fast solvers, Integral representation, Phase-field, Unbounded domain

Jing-Rebecca Li; Donna Calhoun; Lucien Brush

2009-12-01T23:59:59.000Z

378

Athletic Fields and Water Conservation  

E-Print Network [OSTI]

Following an 18-step procedure for performing an irrigation audit will help athletic field managers conserve water while maintaining a pleasing facility for recreational use. To perform the audit correctly, a field manager must determine the answers...

Taylor, Gene R.; White, Richard; Abernathy, Scott; Smith, David

1999-12-10T23:59:59.000Z

379

Golden Field Office Reading Room  

Office of Energy Efficiency and Renewable Energy (EERE)

The Golden Field Office was designated a Department of Energy (DOE) field office in December 1992 to support the development and commercialization of renewable energy and energy-efficient...

380

RESULTS OF FIELD TESTING DOE  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Energy facility located within Naval Petroleum Reserve No. 3 (NPR-3), also known as Teapot Dome Oil Field, about 35 miles north of Casper, Wyoming. Teapot Dome Field, Natrona...

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Diamond-graphite field emitters  

DOE Patents [OSTI]

A field emission electron emitter comprising an electrode of diamond and a conductive carbon, e.g., graphite, is provided.

Valone, Steven M. (Santa Fe, NM)

1997-01-01T23:59:59.000Z

382

Remote control of ion channels and neurons through magnetic-field heating of nanoparticles  

E-Print Network [OSTI]

Remote control of ion channels and neurons through magnetic-field heating of nanoparticles Heng. Here, we show an approach based on radio-frequency magnetic-field heating of nanoparticles to remotely targeted to specific proteins on the plasma membrane of cells expressing TRPV1, and heated by a radio

Ferkey, Denise

383

Low field magnetic resonance imaging  

DOE Patents [OSTI]

A method and system of magnetic resonance imaging does not need a large homogenous field to truncate a gradient field. Spatial information is encoded into the spin magnetization by allowing the magnetization to evolve in a non-truncated gradient field and inducing a set of 180 degree rotations prior to signal acquisition.

Pines, Alexander (Berkeley, CA); Sakellariou, Dimitrios (Billancourt, FR); Meriles, Carlos A. (Fort Lee, NJ); Trabesinger, Andreas H. (London, GB)

2010-07-13T23:59:59.000Z

384

Magnetic-field-dosimetry system  

DOE Patents [OSTI]

A device is provided for measuring the magnetic field dose and peak field exposure. The device includes three Hall-effect sensors all perpendicular to each other, sensing the three dimensional magnetic field and associated electronics for data storage, calculating, retrieving and display.

Lemon, D.K.; Skorpik, J.R.; Eick, J.L.

1981-01-21T23:59:59.000Z

385

Cryptography in Quadratic Function Fields  

Science Journals Connector (OSTI)

We describe several cryptographic schemes in quadratic function fields of odd characteristic. In both the real and the imaginary representation of such a field, we present a Diffie-Hellman-like key exchange protocol as well as a public-key cryptosystem ... Keywords: Diffie-Hellman key exchange protocol, ElGamal signature scheme, discrete logarithm, public key cryptosystem, quadratic function field

R. Scheidler

2001-04-01T23:59:59.000Z

386

Golden Field Office  

Broader source: Energy.gov (indexed) [DOE]

1617 Cole Boulevard Golden , Colorado 80401-3393 DOE/EA-1791 FINDING OF NO SIGNIFICANT IMPACT UNIVERSITY OF MINNESOTA WIND ENERGY RESEARCH CONSORTIllM PROJECT AGENCY: U.S. Department of Energy, Golden Field Office ACTION : Finding of No Significant Impact (FONSI) SUMMARY: The U. S. Department of Energy (DOE) is proposing to authorize the expenditure of Federal funding by the University of Minnesota to design, permit, and construct a wind turbine research facility I. This funding has been appropriated under the American Recovery and Reinvestment Act of2009. The University would use the funding to install a wind turbine research facility at its University of Minnesota Outreach Research and Education (UMore) Park in Rosemount, Minnesota. The proposed research facility would consist of a 2.5-megawatt-

387

Golden Field Office  

Broader source: Energy.gov (indexed) [DOE]

FINDING OF NO SIGNIFICANT IMPACT FINDING OF NO SIGNIFICANT IMPACT MONARCH WARREN COUNTY WIND TURBINE PROJECT LENOX TOWNSIDP, WARREN COUNTY, IL AGENCY: U.S. Department of Energy (DOE), Golden Field Office ACTION: Finding orNo Significant Impact (FONS!) DOEIEA-JSOO SUMMARY: The U.S. Department of Energy (DOE) provided Federal funding appropriated under the American Reinvestment and Recovery Act 0(2009 to the Illinois Department ofComrnerce and Econom ic Opportunity (DeEO) under the State Energy Program (SEP). DeEO proposes to provide approximately $5 million of its SEP funds to Monarch Wind Power (MWP) for the Monarch Warren County Wind Turbine Project (MWTP). DOE's Proposed Action is to authorize the expenditure of Federal funding under State Energy Program to design, permit, and construct

388

ARM - Field Campaigns  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

alpacas clouds-anvil german-scene instrumentfield pye-night racoro-inst rhubc-layout snowy-site twpice-ship walter-annemarie alpacas clouds-anvil german-scene instrumentfield pye-night racoro-inst rhubc-layout snowy-site twpice-ship walter-annemarie How Do I Propose a Campaign? First, review the guidelines for submitting proposals. Next, submit a preproposal; a short summary of the proposed campaign. Wait for a response from the Infrastructure Management Board (IMB) and/or ARM Science Board. A full proposal or science plan, may be requested. Decision is made-now what is expected? ARM Climate Research Facility users regularly conduct field campaigns to augment routine data acquisitions and to test and validate new instruments. Announcements 13 Dec 2013 Now accepting proposals for use of an AMF, AAF, or augment observations at one of our fixed sites. Smaller campaigns in FY2014 and FY2015 can also be

389

Chameleon Field Theories  

E-Print Network [OSTI]

Chameleons are light scalar fields with remarkable properties. Through the interplay of self-interactions and coupling to matter, chameleon particles have a mass that depends on the ambient matter density. The manifestation of the fifth force mediated by chameleons therefore depends sensitively on their environment, which makes for a rich phenomenology. In this article, we review two recent results on chameleon phenomenology. The first result a pair of no-go theorems limiting the cosmological impact of chameleons and their generalizations: i) the range of the chameleon force at cosmological density today can be at most ~Mpc; ii) the conformal factor relating Einstein- and Jordan-frame scale factors is essentially constant over the last Hubble time. These theorems imply that chameleons have negligible effect on the linear growth of structure, and cannot account for the observed cosmic acceleration except as some form of dark energy. The second result pertains to the quantum stability of chameleon theories. We ...

Khoury, Justin

2013-01-01T23:59:59.000Z

390

Golden Field Office  

Broader source: Energy.gov (indexed) [DOE]

80401 -3393 DOEIEA-1818 80401 -3393 DOEIEA-1818 FINDING OF NO SIGNIFICANT IMPACT PETTISVILLE WIND ENERGY PROJECT AGENCY: U.S . Department of Energy, Golden Field Office ACTION: Finding of No Significant Impact (FONSI) SUMMARY: The U.S. Department of Energy (DOE) provided Federal funding to the Ohio Department of Development (0000) under the State Energy Program (SEP). 0000 proposes to provide $1 ,225 ,000 of its SEP funds to the Pettisvil Ie Local Schools (Pettisville) for the Pettisville Local Schools Wind Energy Project (Wind Energy Project). DOE' s Proposed Action is to authorize the expenditure of Federal funding under State Energy Program to design, permit, and construct the Pettisville Wind Energy Project, a 750-kilowatt wind turbine at the Pettisville Pre-Kindergarten through Twelfth Grade School located at

391

A group bridge approach for variable selection  

Science Journals Connector (OSTI)

......group bridge approach for variable...Actuarial Science, University...Department of Management Science, University...group bridge approach that is capable...group bridge approach for variable...Actuarial Science, University...Department of Management Science......

Jian Huang; Shuange Ma; Huiliang Xie; Cun-Hui Zhang

2009-06-01T23:59:59.000Z

392

A continuation approach to regularization for traveltime tomography  

SciTech Connect (OSTI)

In most geometries in which seismic traveltime tomography is applied the slowness field is not well-determined from traveltimes alone. Nonuniqueness is common. Even when the slowness field is uniquely determined, small changes in the measured traveltimes can lead to large errors in the computed slowness field. A priori information is often available--well-logs, initial rough estimates of the slowness from structural geology, etc. This a priori information can be incorporated into a traveltime inversion algorithm using penalty terms. To further regularize the problem, smoothing constrains can also be incorporated using penalty terms by penalizing derivatives of the slowness field. A major decision to be made is the selection of the weights on the penalty terms, particularly the smoothing penalty weights. The authors use a continuation approach for selecting the smoothing penalty weights. Instead of fixing the smoothing penalty weights, they decrease the smoothing penalty weights in a step-by-step fashion, using the slowness model computed using the previous (larger) weights as the initial slowness model for the next step using the new (smaller) weights. A surprising outcome in synthetic problems is that the model error continues to decrease as they continue to decrease the smoothing penalty weights even after the data error had leveled off at the noise level. This continuation approach can solve synthetic problems more accurately than with fixed smoothing penalty weights, and appears to yield more features of interest in real-data applications of traveltime tomography.

Bube, K.P. [Univ. of Washington, Seattle, WA (United States); Langan, R.T. [Chevron Petroleum Technology, La Habra, CA (United States)

1994-12-31T23:59:59.000Z

393

Ecological Modelling 187 (2005) 281296 Estimating estuarine gross production, community respiration and  

E-Print Network [OSTI]

observations and model predictions. The spatially resolving solution shows maximum instantaneous GPP of 1030 approach. Most DO inverse methods are based on the follow- ing observation. During daylight hours, oxygen

Vallino, Joseph J.

394

Revisiting Noether gauge symmetry approach in quintom cosmology  

E-Print Network [OSTI]

The Noether gauge symmetry approach is revisited to study various quintom scenarios (those that arise by the presence of two dynamical scalar fields) to comprehend the role of dark energy in our universe. For such models, we obtain smooth parameterizations of the equation of state of dark energy across the boundary of cosmological constant $w_{\\Lambda}=-1$. This study gives rise to two new cases of the potential $V(\\phi, \\sigma)$, due to a quintom field in which nonlinear coupling of the scalar fields arise. Besides we report that a few cases of Noether gauge symmetries and their invariants in [Adnan Aslam, et. al., Astrophys Space Sci (2013), 348:533-540] are incorrect. Consequently, the given cosmological model in their paper is not a feasible quintom model.

Ali, Sajid

2015-01-01T23:59:59.000Z

395

Golden Field Office Disability Awareness Month Event | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Golden Field Office Disability Awareness Month Event Golden Field Office Disability Awareness Month Event Golden Field Office Disability Awareness Month Event October 29, 2012 10:00AM MST Golden Field Office U.S. Department of Energy 1617 Cole Blvd Golden, Co. 80401 Building 17, 4th Floor Come join us for a Disability Awareness Month program on Monday, October 29, 2012 in Bldg. 17, 4th floor, from 10:00-11:00 am. We will have a couple of performers from a Theatre group named Phamaly. Phamaly brings a unique and unusual approach to the theatre landscape. Phamaly produces professional quality live theatre with performers who are physically and/or developmentally challenged, empowering them to acquire new and improve approve upon existing skills. Phamaly also educates other theatre professionals in methods of adapting their performance to include

396

Title  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Site Map Site Map Home Publications Software Facilities Links Staff Glazing Materials Chromogenics LowE and Spectrally Selective Deposition Processes Characterization New Materials Advanced Systems Superwindows Integrated Window Systems Gas-Filled Panels Window Properties Infrared Laboratory and Traversing System MoWiTT Window+5 Development Therm Development Film Coefficients Condensation Resistance Comfort Models Field Measurements LBNL Role in NFRC Optics Database Daylighting IEA Task 21 Lightshelves/Lightpipes Tools for Daylighting Prediction Demonstrations Daylighting Controls Residential Performance Energy Star ResFen Development ECW Demonstrations Annual Energy Rating Field Tests and Monitoring Projects

397

300 Area Integrated Field-Scale Subsurface Research Challenge (IFRC) Field Site Management Plan  

SciTech Connect (OSTI)

Pacific Northwest National Laboratory (PNNL) has established the 300 Area Integrated Field-Scale Subsurface Research Challenge (300 Area IFRC) on the Hanford Site in southeastern Washington State for the U.S. Department of Energys (DOE) Office of Biological and Environmental Research (BER) within the Office of Science. The project is funded by the Environmental Remediation Sciences Division (ERSD). The purpose of the project is to conduct research at the 300 IFRC to investigate multi-scale mass transfer processes associated with a subsurface uranium plume impacting both the vadose zone and groundwater. The management approach for the 300 Area IFRC requires that a Field Site Management Plan be developed. This is an update of the plan to reflect the installation of the well network and other changes.

Freshley, Mark D.

2008-12-31T23:59:59.000Z

398

A new approach to water desalination  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

new approach to water desalination A new approach to water desalination Graphene sheets with precisely controlled pores have potential to purify water more efficiently than...

399

Combinatorial Approach for Hydrogen Storage Materials (presentation...  

Broader source: Energy.gov (indexed) [DOE]

Combinatorial Approach for Hydrogen Storage Materials (presentation) Combinatorial Approach for Hydrogen Storage Materials (presentation) Presented at the U.S. Department of...

400

Combinatorial Approach for Hydrogen Storage Materials (presentation...  

Broader source: Energy.gov (indexed) [DOE]

Approach for Hydrogen Storage Materials Grigorii Soloveichik, John Lemmon, Jun Cui, Yan Gao, Tom Raber, Job Rijssenbeek, Gosia Rubinzstajn, J.C. Zhao 2 Outline Approach: Parallel...

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Chiral-field microwave antennas (Chiral microwave near fields for far-field radiation)  

E-Print Network [OSTI]

In a single-element structure we obtain a radiation pattern with a squint due to chiral microwave near fields originated from a magnetostatic-mode ferrite disk. At the magnetostatic resonances, one has strong subwavelength localization of energy of microwave radiation. Magnetostatic oscillations in a thin ferrite disk are characterized by unique topological properties: the Poynting-vector vortices and the field helicity. The chiral-topology near fields allow obtaining unique phase structure distribution for far-field microwave radiation.

Kamenetskii, E O; Shavit, R

2015-01-01T23:59:59.000Z

402

A Dynamical Approach to Temperature  

E-Print Network [OSTI]

We present a new dynamical approach for measuring the temperature of a Hamiltonian dynamical system in the micro canonical ensemble of thermodynamics. We show that under the hypothesis of ergodicity the temperature can be computed as a time-average of the functional, div(grad H/|grad H|^2), on the energy-surface. Our method not only yields an efficient computational approach for determining the temperature it also provides an intrinsic link between dynamical systems theory and the statistical mechanics of Hamiltonian systems.

Hans Henrik Rugh

1997-01-30T23:59:59.000Z

403

A new approach to the detail design phase of the IIDE Design Process through insights from software design  

E-Print Network [OSTI]

The Engineering Design Process has been described in different ways by means of different approaches. Attempts to compare the Design Process in mechanical engineering with design in other fields have been made. This thesis compares the IIDE...

Bhat, Gireesh Keshav

2002-01-01T23:59:59.000Z

404

Realization Approaches of Customer Relationship Management A Design Science Research Contribution to Support the Construction of Situational CRM Artifacts  

Science Journals Connector (OSTI)

In this paper, customer relationship management (CRM) is focused as one particular field of application for design science research (DSR). In managerial practice, it can be observed that CRM is approached differe...

Anke Gericke; Tobias Bucher

2010-01-01T23:59:59.000Z

405

Dirac-Brueckner-Hartree-Fock versus chiral effective field theory  

E-Print Network [OSTI]

We compare nuclear and neutron matter predictions based on two different ab initio approaches to nuclear forces and the nuclear many-body problem. The first consists of a realistic meson-theoretic nucleon-nucleon potential together with the relativistic counterpart of the Brueckner-Hartree-Fock theory of nuclear matter. The second is based on chiral effective field theory, with density-dependent interactions derived from leading order chiral three-nucleon forces. We find the results to be very close and conclude that both approaches contain important features governing the physics of nuclear and neutron matter.

F. Sammarruca; B. Chen; L. Coraggio; N. Itaco; R. Machleidt

2012-09-22T23:59:59.000Z

406

Dirac-Brueckner-Hartree-Fock versus chiral effective field theory  

E-Print Network [OSTI]

We compare nuclear and neutron matter predictions based on two different ab initio approaches to nuclear forces and the nuclear many-body problem. The first consists of a realistic meson-theoretic nucleon-nucleon potential together with the relativistic counterpart of the Brueckner-Hartree-Fock theory of nuclear matter. The second is based on chiral effective field theory, with density-dependent interactions derived from leading order chiral three-nucleon forces. We find the results to be very close and conclude that both approaches contain important features governing the physics of nuclear and neutron matter.

Sammarruca, F; Coraggio, L; Itaco, N; Machleidt, R

2012-01-01T23:59:59.000Z

407

Nonideal evolution of nonaxisymmetric, force-free magnetic fields in a magnetar  

E-Print Network [OSTI]

Recent numerical magnetohydrodynamic calculations by Braithwaite and collaborators support the `fossil field' hypothesis regarding the origin of magnetic fields in compact stars and suggest that the resistive evolution of the fossil field can explain the reorganisation and decay of magnetar magnetic fields. Here, these findings are modelled analytically by allowing the stellar magnetic field to relax through a quasistatic sequence of nonaxisymmetric, force-free states, by analogy with spheromak relaxation experiments, starting from a random field. Under the hypothesis that the force-free modes approach energy equipartition in the absence of resistivity, the output of the numerical calculations is semiquantitatively recovered: the field settles down to a linked poloidal-toroidal configuration, which inflates and becomes more toroidal as time passes. A qualitatively similar (but not identical) end state is reached if the magnetic field evolves by exchanging helicity between small and large scales according to a...

Mastrano, Alpha

2008-01-01T23:59:59.000Z

408

Whistler Modes with Wave Magnetic Fields Exceeding the Ambient Field  

Science Journals Connector (OSTI)

Whistler-mode wave packets with fields exceeding the ambient dc magnetic field have been excited in a large, high electron-beta plasma. The waves are induced with a loop antenna with dipole moment either along or opposite to the dc field. In the latter case the excited wave packets have the topology of a spheromak but are propagating in the whistler mode along and opposite to the dc magnetic field. Field-reversed configurations with net zero helicity have also been produced. The electron magnetohydrodynamics fields are force free, have wave energy density exceeding the particle energy density, and propagate stably at subelectron thermal velocities through a nearly uniform stationary ion density background.

R. L. Stenzel; J. M. Urrutia; K. D. Strohmaier

2006-03-10T23:59:59.000Z

409

Baseline information development for energy smart schools -- applied research, field testing and technology integration  

SciTech Connect (OSTI)

The original scope of work was to obtain and analyze existing and emerging data in four states: California, Florida, New York, and Wisconsin. The goal of this data collection was to deliver a baseline database or recommendations for such a database that could possibly contain window and daylighting features and energy performance characteristics of Kindergarten through 12th grade (K-12) school buildings (or those of classrooms when available). In particular, data analyses were performed based upon the California Commercial End-Use Survey (CEUS) databases to understand school energy use, features of window glazing, and availability of daylighting in California K-12 schools. The outcomes from this baseline task can be used to assist in establishing a database of school energy performance, assessing applications of existing technologies relevant to window and daylighting design, and identifying future R&D needs. These are in line with the overall project goals as outlined in the proposal. Through the review and analysis of this data, it is clear that there are many compounding factors impacting energy use in K-12 school buildings in the U.S., and that there are various challenges in understanding the impact of K-12 classroom energy use associated with design features of window glazing and skylight. First, the energy data in the existing CEUS databases has, at most, provided the aggregated electricity and/or gas usages for the building establishments that include other school facilities on top of the classroom spaces. Although the percentage of classroom floor area in schools is often available from the databases, there is no additional information that can be used to quantitatively segregate the EUI for classroom spaces. In order to quantify the EUI for classrooms, sub-metering of energy usage by classrooms must be obtained. Second, magnitudes of energy use for electricity lighting are not attainable from the existing databases, nor are the lighting levels contributed by artificial lighting or daylight. It is impossible to reasonably estimate the lighting energy consumption for classroom areas in the sample of schools studied in this project. Third, there are many other compounding factors that may as well influence the overall classroom energy use, e.g., ventilation, insulation, system efficiency, occupancy, control, schedules, and weather. Fourth, although we have examined the school EUI grouped by various factors such as climate zones, window and daylighting design features from the California databases, no statistically significant associations can be identified from the sampled California K-12 schools in the current California CEUS. There are opportunities to expand such analyses by developing and including more powerful CEUS databases in the future. Finally, a list of parameters is recommended for future database development and for use of future investigation in K-12 classroom energy use, window and skylight design, and possible relations between them. Some of the key parameters include: (1) Energy end use data for lighting systems, classrooms, and schools; (2) Building design and operation including features for windows and daylighting; and (3) Other key parameters and information that would be available to investigate overall energy uses, building and systems design, their operation, and services provided.

Xu, Tengfang; Piette, Mary Ann

2004-08-05T23:59:59.000Z

410

Field Evaluation of Windows  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Evaluation of Windows Evaluation of Windows Last Updated: 10/20/2009 Various tools can be used to evaluate windows in the field. Unless a new window still has the NFRC label attached to it, it is nearly impossible to determine by sight what the thermal and optical performance of a window is. These tools can provide information, such as low-e coating, gap width and gas fill, that can be used to approximate the performance of a window. Solar gain and Low-e detector This device can be used to determine if a low-e coating is present in the window, what type of coating it is, and where it is located. The type of low-e coating will indicate the amount of solar gain that is admitted through the coating. Readings can be "low", "medium" or "high". The device will also indicate on which glass surface the low-e coating is in relation to the position of the device. Limitations: Only works on glass of 1/8" (3 mm) or thinner. Cost: around $350 from EDTM.com

411

ACCELERATED IMPROVEMENT A CONCENTRATED APPROACH  

E-Print Network [OSTI]

ACCELERATED IMPROVEMENT A CONCENTRATED APPROACH FOR CONTINUOUS IMPROVEMENT #12;Accelerated.quality.wisc.edu O F F I C E O F Q U A L I T Y I M P R O V E M E N T Accelerated Improvement This guide to improving resources. You will find helpful information needed to conduct an Accelerated Improvement project

Shapiro, Vadim

412

FUZZY CONTROLLERS: AN INTEGRATED APPROACH  

E-Print Network [OSTI]

1 FUZZY CONTROLLERS: AN INTEGRATED APPROACH BASED ON FUZZY LOGIC, ROUGH SETS, AND EVOLUTIONARY is used to formalized the design of classical fuzzy logic controllers. The design is formu­ lated into the design theory of fuzzy logic control (FLC). One of the important novelties of FLC design

Lin, Tsau Young

413

Temporal approach to causal knowledge  

Science Journals Connector (OSTI)

......2000 Article Temporal approach to causal knowledge W Penczek Institute of Computer Science...ipiapan.waw.pl Temporal logic of causal knowledge over general partially ordered structures...states is defined. The definition of knowledge captures the change of state due to action......

W Penczek

2000-01-01T23:59:59.000Z

414

Unique Approaches to Water Resources  

E-Print Network [OSTI]

as a result of free trade, atmospheric transport of trace pollutants, and urbanization. Available waterUnique Approaches to Water Resources Education in Florida Watershed Journal Executive Committee Photos courtesy of Dr. Frederick Bloetscher, PE W e are a diverse community of water profes- sionals. We

Central Florida, University of

415

Risk Assessment Approaches for Nanomaterials  

E-Print Network [OSTI]

%) with extrapolation to lower "acceptable" risk 3. Analogy or comparative toxicity to other substances with similar7/3/2013 1 Risk Assessment Approaches for Nanomaterials Eileen D. Kuempel, PhD Nanotechnology to Nanomaterials Risk Assessment 1. No observed adverse effect level (NOAEL) or lowest (LOAEL) with uncertainty

Farritor, Shane

416

Free Energy Evaluation in Field-Theoretic Polymer Simulations  

Science Journals Connector (OSTI)

We present a thermodynamic integration method for free energy evaluation in field-theoretic simulations of classical fluids and polymers. The approach employs an Einstein crystal reference state, analogous to a method developed for particle simulations of crystals by Frenkel and Ladd, but applies equally well in the present context to ordered and disordered phases. Thermodynamic averages are computed using complex Langevin sampling, which is effective against the sign problem inherent to polymer field theories. Our method is illustrated in the context of a diblock copolymer melt, where we provide a demonstration of the experimentally observed transition between the cubic gyroid and disordered phases.

Erin M. Lennon; Kirill Katsov; Glenn H. Fredrickson

2008-09-24T23:59:59.000Z

417

Improving the reliability and accuracy of a multipyranometer array measuring solar radiation  

E-Print Network [OSTI]

The measurement of solar radiation is crucial for the use of solar energy in fields including power generation, agriculture and meteorology. In the building sciences, It is essential for daylighting studies, energy use calculations, and thermal...

Klima, Peter Miloslaw

2012-06-07T23:59:59.000Z

418

Development of computer controls for a goniophotometer  

E-Print Network [OSTI]

The investigation of innovative window materials for redirecting light and thermal sources is an important component of the field of daylighting. The Heliodome system developed in the Building Technology department is a ...

Burgos, Javier (Javier F.)

2008-01-01T23:59:59.000Z

419

Semantic segmentation of street scenes by superpixel co-occurrence and 3D geometry  

E-Print Network [OSTI]

in daylight and dusk. 1. Introduction Combining object segmentation and recognition is one of the fundamental- order Markov Random Field (MRF), where the final label- ing is obtained as a MAP solution of the labels

Kosecka, Jana

420

Multimodal Interaction and Proactive Computing Stephen A Brewster  

E-Print Network [OSTI]

and interact with the systems they will carry and have access to when they are out in the field. One solution and hard to use in bright daylight, plus they occupy the users' visual atten- tion [11] when it may

Williamson, John

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Relativistic approach to electromagnetic imaging  

E-Print Network [OSTI]

A novel imaging principle based on the interaction of electromagnetic waves with a beam of relativistic electrons is proposed. Wave-particle interaction is assumed to take place in a small spatial domain, so that each electron is only briefly accelerated by the incident field. In the one-dimensional case the spatial distribution of the source density can be directly observed in the temporal spectrum of the scattered field. Whereas, in the two-dimensional case the relation between the source and the spectrum is shown to be approximately the Radon transform.

Budko, N

2004-01-01T23:59:59.000Z

422

Relativistic approach to electromagnetic imaging  

E-Print Network [OSTI]

A novel imaging principle based on the interaction of electromagnetic waves with a beam of relativistic electrons is proposed. Wave-particle interaction is assumed to take place in a small spatial domain, so that each electron is only briefly accelerated by the incident field. In the one-dimensional case the spatial distribution of the source density can be directly observed in the temporal spectrum of the scattered field. Whereas, in the two-dimensional case the relation between the source and the spectrum is shown to be approximately the Radon transform.

Neil Budko

2004-03-11T23:59:59.000Z

423

New Approaches for Understanding the Hanford 300 Area Project at NERSC  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Home » Science at NERSC » Environmental Science » New Approaches for Home » Science at NERSC » Environmental Science » New Approaches for Understanding the Hanford 300 Area New Approaches for Understanding the Hanford 300 Area Yoram.jpg Key Challenges: Simultaneously generate an ensemble of results for tens to hundreds of thousands of subsurface flow and transport simulations to characterize uncertainty of the parameters to those simulations. Use inverse modeling to help validate a field-scale reactive transport model of subsurface uranium migration processes. One of the main challenges is integration of datasets (e.g., from field pumping or injection tests) of different types and scales. Why it Matters: Pacific Northwest National Laboratory (PNNL) is leading an IFRC (Integrated Field Research Challenge) project at the Hanford Site in

424

Nuclear effective field theory on the lattice  

E-Print Network [OSTI]

In the low-energy region far below the chiral symmetry breaking scale (which is of the order of 1 GeV) chiral perturbation theory provides a model-independent approach for quantitative description of nuclear processes. In the two- and more-nucleon sector perturbation theory is applicable only at the level of an effective potential which serves as input in the corresponding dynamical equation. To deal with the resulting many-body problem we put chiral effective field theory (EFT) on the lattice. Here we present the results of our lattice EFT study up to next-to-next-to-leading order in the chiral expansion. Accurate description of two-nucleon phase-shifts and ground state energy ratio of dilute neutron matter up to corrections of higher orders shows that lattice EFT is a promising tool for a quantitative description of low-energy few- and many-body systems.

Hermann Krebs; Bugra Borasoy; Evgeny Epelbaum; Dean Lee; Ulf-G. Mei ner

2008-10-01T23:59:59.000Z

425

Field Sampling | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Field Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Field Sampling Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Field Techniques Information Provided by Technique Lithology: Rock samples are used to define lithology. Field and lab analyses can be used to measure the chemical and isotopic constituents of rock samples. Stratigraphic/Structural: Can reveal relatively high permeability zones. Provides information about the time and environment which formed a particular geologic unit. Microscopic rock textures can be used to estimate the history of stress and strain, and/or faulting.

426

Steam Field | Open Energy Information  

Open Energy Info (EERE)

Field Field Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Steam Field Dictionary.png Steam Field: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Steam field reservoirs are special cases where the fluid is predominantly found in a gas phase between 230°C to 240°C. "This special class of resource needs to be recognized, its uniqueness being the remarkably consistent initial temperature and pressure

427

Pair production in inhomogeneous fields  

SciTech Connect (OSTI)

We employ the recently developed worldline numerics, which combines string-inspired field theory methods with Monte Carlo techniques, to develop an algorithm for the computation of pair-production rates in scalar QED for inhomogeneous background fields. We test the algorithm with the classic Sauter potential, for which we compute the local production rate for the first time. Furthermore, we study the production rate for a superposition of a constant E field and a spatially oscillating field for various oscillation frequencies. Our results reveal that the approximation by a local derivative expansion already fails for frequencies small compared to the electron-mass scale, whereas for strongly oscillating fields a derivative expansion for the averaged field represents an acceptable approximation. The worldline picture makes the nonlocal nature of pair production transparent and facilitates a profound understanding of this important quantum phenomenon.

Gies, Holger; Klingmueller, Klaus [Institut fuer theoretische Physik, Universitaet Heidelberg, Philosophenweg 16, D-69120 Heidelberg (Germany)

2005-09-15T23:59:59.000Z

428

Pair production in inhomogeneous fields  

E-Print Network [OSTI]

We employ the recently developed worldline numerics, which combines string-inspired field theory methods with Monte-Carlo techniques, to develop an algorithm for the computation of pair-production rates in scalar QED for inhomogeneous background fields. We test the algorithm with the classic Sauter potential, for which we compute the local production rate for the first time. Furthermore, we study the production rate for a superposition of a constant E field and a spatially oscillating field for various oscillation frequencies. Our results reveal that the approximation by a local derivative expansion fails already for frequencies small compared to the electron mass scale, whereas for strongly oscillating fields a derivative expansion for the averaged field represents an acceptable approximation. The worldline picture makes the nonlocal nature of pair production transparent and facilitates a profound understanding of this important quantum phenomenon.

Holger Gies; Klaus Klingmuller

2005-05-12T23:59:59.000Z

429

Torsion and the Electromagnetic Field  

E-Print Network [OSTI]

In the framework of the teleparallel equivalent of general relativity, we study the dynamics of a gravitationally coupled electromagnetic field. It is shown that the electromagnetic field is able not only to couple to torsion, but also, through its energy-momentum tensor, to produce torsion. Furthermore, it is shown that the coupling of the electromagnetic field with torsion preserves the local gauge invariance of Maxwell's theory.

V. C. de Andrade; J. G. Pereira

1999-01-11T23:59:59.000Z

430

Noncommutivity and Scalar Field Cosmology  

E-Print Network [OSTI]

In this work we extend and apply a previous proposal to study noncommutative cosmology to the FRW cosmological background coupled to a scalar field, this is done in classical and quantum scenarios. In both cases noncommutativity is introduced in the gravitational field as well as in the scalar field through a deformation of minisuperspace and are able to find exact solutions. Finally, the effects of noncommutativity on the classical evolution are analyzed.

W. Guzmn; M. Sabido; J. Socorro

2007-12-10T23:59:59.000Z

431

Quantization of Spin-2 Fields  

Science Journals Connector (OSTI)

A massive spin-2 field has been quantized using Schwinger's action principle. Lorentz invariance and physical positive-definiteness requirements have been verified.

Shau-jin Chang

1966-08-26T23:59:59.000Z

432

field emission electron microprobe | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

field emission electron microprobe Leads No leads are available at this time. Magnesium behavior and structural defects in Mg+ ion implanted silicon carbide. Abstract: As a...

433

EMSL - field emission electron microprobe  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

field-emission-electron-microprobe en Magnesium behavior and structural defects in Mg+ ion implanted silicon carbide. http:www.emsl.pnl.govemslwebpublications...

434

Electrochemical formation of field emitters  

DOE Patents [OSTI]

Electrochemical formation of field emitters, particularly useful in the fabrication of flat panel displays. The fabrication involves field emitting points in a gated field emitter structure. Metal field emitters are formed by electroplating and the shape of the formed emitter is controlled by the potential imposed on the gate as well as on a separate counter electrode. This allows sharp emitters to be formed in a more inexpensive and manufacturable process than vacuum deposition processes used at present. The fabrication process involves etching of the gate metal and the dielectric layer down to the resistor layer, and then electroplating the etched area and forming an electroplated emitter point in the etched area.

Bernhardt, Anthony F. (Berkeley, CA)

1999-01-01T23:59:59.000Z

435

National High Magnetic Field Laboratory: Superconductors  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

opposes the magnetic field generating the current. In a perfect diamagnet, the magnetic field lines produced exactly mirror those of the changing magnetic field that induce them,...

436

Magnetic field sensors using 13-spin cat states  

E-Print Network [OSTI]

Measurement devices could benefit from entangled correlations to yield a measurement sensitivity approaching the physical Heisenberg limit. Building upon previous magnetometric work using pseudo-entangled spin states in solution-state NMR, we present two conceptual advancements to better prepare and interpret the pseudo-entanglement resource as well as the use of a 13-spin cat state to measure the local magnetic field with a sensitivity beyond the standard quantum limit.

Stephanie Simmons; Jonathan A. Jones; Steven D. Karlen; Arzhang Ardavan; John J. L. Morton

2010-11-24T23:59:59.000Z

437

Local and Global Casimir Energies in a Green's Function Approach  

E-Print Network [OSTI]

The effects of quantum fluctuations in fields confined by background configurations may be simply and transparently computed using the Green's function approach pioneered by Schwinger. Not only can total energies and surface forces be computed in this way, but local energy densities, and in general, all components of the vacuum expectation value of the energy-momentum tensor may be calculated. For simple geometries this approach may be carried out exactly, which yields insight into what happens in less tractable situations. In this talk I will concentrate on the example of a scalar field in a circular cylindrical delta-function background. This situation is quite similar to that of a spherical delta-function background. The local energy density in these cases diverges as the surface of the background is approached, but these divergences are integrable. The total energy is finite in strong coupling, but in weak coupling a divergence occurs in third order. This universal feature is shown to reflect a divergence in the energy associated with the surface, the integrated local energy density within the shell itself, which surface energy should be removable by a process of renormalization.

K. A. Milton; I. Cavero-Pelaez; K. Kirsten

2006-12-29T23:59:59.000Z

438

Electromagnetic field with induced massive term: Case with scalar field  

E-Print Network [OSTI]

We consider an interacting system of massless scalar and electromagnetic field, with the Lagrangian explicitly depending on the electromagnetic potentials, i.e., interaction with broken gauge invariance. The Lagrangian for interaction is chosen in such a way that the electromagnetic field equation acquires an additional term, which in some cases is proportional to the vector potential of the electromagnetic field. This equation can be interpreted as the equation of motion of photon with induced nonzero rest-mass. This system of interacting fields is considered within the scope of Bianchi type-I (BI) cosmological model. It is shown that, as a result of interaction the electromagnetic field vanishes at $t \\to \\infty$ and the isotropization process of the expansion takes place.

Yu. P. Rybakov; G. N. Shikin; Yu. A. Popov; Bijan Saha

2010-04-21T23:59:59.000Z

439

Electromagnetic field with induced massive term: Case with spinor field  

E-Print Network [OSTI]

We consider an interacting system of spinor and electromagnetic field, explicitly depending on the electromagnetic potentials, i.e., interaction with broken gauge invariance. The Lagrangian for interaction is chosen in such a way that the electromagnetic field equation acquires an additional term, which in some cases is proportional to the vector potential of the electromagnetic field. This equation can be interpreted as the equation of motion of photon with induced non-trivial rest-mass. This system of interacting spinor and scalar fields is considered within the scope of Bianchi type-I (BI) cosmological model. It is shown that, as a result of interaction the electromagnetic field vanishes at $t \\to \\infty$ and the isotropization process of the expansion takes place.

Yu. P. Rybakov; G. N. Shikin; Yu. A. Popov; Bijan Saha

2010-08-12T23:59:59.000Z

440

Dominance-based rough set approach and analytic network process for assessing urban transformation scenarios  

Science Journals Connector (OSTI)

The paper shows the contribution that two different multiple criteria decision aiding (MCDA) methods could provide in the field of strategic decisions and urban and territorial planning. In particular, the analytic network process and the dominance-based rough set approach have been considered and discussed in the work with reference to their role in supporting such decision-making processes, trying to compare the different contributions given by the two approaches in this specific domain of application.

Francesca Abastante; Marta Bottero; Salvatore Greco; Isabella M. Lami

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

A Phase-Field Model for Phase Transformations in Glass-Forming Alloys  

SciTech Connect (OSTI)

A phase-field model is proposed for phase transformations in glass-forming alloys. The glass transition is introduced as a structural relaxation, and the competition between the glass and crystalline phases is investigated. The simulations are performed for Cu-Zr alloys, employing thermodynamic and kinetic parameters derived from reported thermodynamic modeling and molecular dynamics simulation results,[13] respectively. Four distinct phase fields are treated with a multi-phase-field approach, representing the liquid/glass, Cu10Zr7, CuZr, and CuZr2 phases. In addition, a continuum-field method is applied to the liquid to accommodate the liquidglass transformation. The combined phase-field approach is used to investigate the glass formation tendency, and critical cooling rates are estimated and compared with the reported experimental values.

Wang, Tao; Napolitano, Ralph E.

2012-03-24T23:59:59.000Z

442

Engine ground demonstration test approach  

SciTech Connect (OSTI)

The hardware portion of the current phase of the Integrated Solar Upper Stage (ISUS) program culminates in a system ground demonstration test. The potential application of ISUS technology to a wide array of future missions complicates the process of selecting from among demonstration system design options and test approaches. The approach to this system demonstration has been to maximize system technology readiness level for the entire array of potential missions within the constraints of the program. To this end, system design and test operations planning has been carried out with a premium on demonstrating those elements of the system common to all missions. In addition, test planning has been managed to allow margin for testing those portions of the system envelope needed to confirm acceptable operation for scenarios within the mission set that are specific to a given mission or mission type. Examples drawn from the specific Engine Ground Demonstration (EGD) design selections are used to illuminate this approach, with the result that the EGD system design is not only described, but the reasons for its particular characteristics are made evident.

Kudija, C.T. [Rockwell Aerospace, Canoga Park, CA (United States). Rocketdyne Div.

1996-12-31T23:59:59.000Z

443

Alternative systematic approaches to training  

SciTech Connect (OSTI)

This handbook is approved for use by all DOE Components and contractors. The handbook was prepared primarily for DOE nuclear facilities, but the information can be effectively used by any other type of facility. DOE nuclear, DOE non-nuclear, commercial nuclear reactor, fuel fabrication, chemical processing, or other types of facilities may also apply the principles of this approach and find it useful and applicable to local needs. The handbook provides DOE and contractor operating organizations with concepts and guidance regarding the use of alternative techniques to implement a systematic approach to training (SAT). The techniques described in this handbook are endorsed by DOE and use of the guidance in this handbook is appropriate for establishment of technical training programs at DOE nuclear facilities. The use of guidance on selection and implementation of appropriate training approaches after consideration of job complexity, the consequences of error based on risk/hazard potential, and available training media should result in effective and efficient training programs. The information presented in this handbook can be used to grade the level of effort and formality used in developing training programs.

Not Available

1995-01-01T23:59:59.000Z

444

The M3D-C1 Approach to Simulating 3D 2-fluid Magnetohydrodynamics in Magnetic Fusion Experiments  

SciTech Connect (OSTI)

A new approach for solving the 3D MHD equations in a strongly magnetized toroidal plasma is presented which uses high-order 2D finite elements with C1 continuity. The vector fields use a physics-based decomposition. An efficient implicit time advance separates the velocity and field advance. ITAPS (SCOREC) adaptivity software and TOPS solvers are used.

S. C. Jardin, N. Ferraro, X. Luo, J. Chen, J. Breslau, K.E. Jansen, and M. S. Shephard

2008-06-24T23:59:59.000Z

445

On differences between the B- and E-approaches and the implications for the Solar atmosphere  

E-Print Network [OSTI]

A simple collisional three-component plasma model consisting of electrons, ions, and neutrals with arbitrary collision frequencies and dynamic time scales is considered. It is shown that the usual MHD-approach dealing with magnetic field perturbations can give other results than the approach in which all perturbations are expressed via the perturbed electric field. For the partially ionized plasma with strong collisional coupling of neutrals with ions, magnetosonic (nondamping) and Alfv\\'{e}n (weakly damping) waves modified by the presence of neutrals are obtained. It is shown that the magnetic diffusivity for Alfv\\'{e}n waves appears only due to the longitudinal current connected with the field $E_{1z}$ at the angular propagation of perturbations relatively to the background magnetic field. The model can be applied to different parts of a solar atmosphere and prominences.

Nekrasov, Anatoly K

2014-01-01T23:59:59.000Z

446

Field observations and lessons learned  

SciTech Connect (OSTI)

This presentation outlines observations and lessons learned from the Megaports program. It provides: (1) details of field and technical observations collected during LANL field activities at ports around the world and details of observations collected during radiation detections system testing at Los Alamos National Laboratory; (2) provides suggestions for improvement and efficiency; and (3) discusses possible program execution changes for more effective operations.

Nielsen, Joh B [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

447

Field Techniques | Open Energy Information  

Open Energy Info (EERE)

Field Techniques Field Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Field Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Map surface geology and hydrothermal alteration. Rock samples are used to define lithology. Field and lab analyses can be used to measure the chemical and isotopic constituents of rock samples. Bulk and trace element analysis of rocks, minerals, and sediments. Identify and document surface geology and mineralogy. Rapid and unambiguous identification of unknown minerals.[1] Stratigraphic/Structural: Locates active faults in the area of interest. Map fault and fracture patterns, kinematic information. Can reveal relatively high permeability zones. Provides information about the time and environment which formed a particular geologic unit. Microscopic rock textures can be used to estimate the history of stress and strain, and/or faulting.

448

Plasma Production via Field Ionization  

SciTech Connect (OSTI)

Plasma production via field ionization occurs when an incoming particle beam is sufficiently dense that the electric field associated with the beam ionizes a neutral vapor or gas. Experiments conducted at the Stanford Linear Accelerator Center explore the threshold conditions necessary to induce field ionization by an electron beam in a neutral lithium vapor. By independently varying the transverse beam size, number of electrons per bunch or bunch length, the radial component of the electric field is controlled to be above or below the threshold for field ionization. Additional experiments ionized neutral xenon and neutral nitric oxide by varying the incoming beam's bunch length. A self-ionized plasma is an essential step for the viability of plasma-based accelerators for future high-energy experiments.

O'Connell, C.L.; Barnes, C.D.; Decker, F.; Hogan, M.J.; Iverson, R.; Krejcik, P.; Siemann, R.; Walz, D.R.; /SLAC; Clayton, C.E.; Huang, C.; Johnson, D.K.; Joshi, C.; Lu,; Marsh, K.A.; Mori, W.; Zhou, M.; /UCLA; Deng, S.; Katsouleas, T.; Muggli, P.; Oz, E.; /Southern California U.

2007-01-02T23:59:59.000Z

449

Compact orthogonal NMR field sensor  

DOE Patents [OSTI]

A Compact Orthogonal Field Sensor for emitting two orthogonal electro-magnetic fields in a common space. More particularly, a replacement inductor for existing NMR (Nuclear Magnetic Resonance) sensors to allow for NMR imaging. The Compact Orthogonal Field Sensor has a conductive coil and a central conductor electrically connected in series. The central conductor is at least partially surrounded by the coil. The coil and central conductor are electrically or electro-magnetically connected to a device having a means for producing or inducing a current through the coil and central conductor. The Compact Orthogonal Field Sensor can be used in NMR imaging applications to determine the position and the associated NMR spectrum of a sample within the electro-magnetic field of the central conductor.

Gerald, II, Rex E. (Brookfield, IL); Rathke, Jerome W. (Homer Glen, IL)

2009-02-03T23:59:59.000Z

450

A Proton Spin Diffusion Based Solid-State NMR Approach for Structural Studies on Aligned Samples  

Science Journals Connector (OSTI)

In particular, 2D separated-local-field (SLF) spectroscopy is increasingly applied to obtain high-resolution molecular images of these materials. ... However, despite the common use of SLF experiments in the structural studies of a variety of aligned molecules, the lack of a resonance assignment approach has been a major disadvantage. ... For aligned samples, anisotropic interactions are retained and can be extracted via a technique called separated-local-field (SLF) spectroscopy. ...

Jiadi Xu; Pieter E. S. Smith; Ronald Soong; Ayyalusamy Ramamoorthy

2011-04-05T23:59:59.000Z

451

Abandoned oil fields in Kansas and Nebraska  

SciTech Connect (OSTI)

Data on approximately 400 abandoned oil fields in Kansas and 90 abandoned oil fields in Nebraska are presented. The following information is obtained on each field: county; DOE field code; field name; AAPG geologic province code; discovery date; year of last production; discovery well operator; proven acreage; formation thickness; depth of field; API gravity; calendar year; yearly field oil production; yearly field gas production; cumulative oil production; cumulative gas production; number abandoned fields in county; cumulative production of oil from fields; and cumulative production of gas from fields. (DMC)

Not Available

1982-12-01T23:59:59.000Z

452

Bringing simulation to engineers in the field: a Web 2.0 approach  

Science Journals Connector (OSTI)

...technologies, such as Opera Mini v. 3.0. 4. System evaluation...server components across multiple grid infrastructures will minimize...services to further access and use grid infrastructures. This will...D. J. 2007 Web 2.0 for Grids and e-Science. In Proc...

2009-01-01T23:59:59.000Z

453

Stochastic approach to correlations beyond the mean field with the Skyrme interaction  

SciTech Connect (OSTI)

Large-scale calculation based on the multi-configuration Skyrme density functional theory is performed for the light N=Z even-even nucleus, {sup 12}C. Stochastic procedures and the imaginary-time evolution are utilized to prepare many Slater determinants. Each state is projected on eigenstates of parity and angular momentum. Then, performing the configuration mixing calculation with the Skyrme Hamiltonian, we obtain low-lying energy-eigenstates and their explicit wave functions. The generated wave functions are completely free from any assumption and symmetry restriction. Excitation spectra and transition probabilities are well reproduced, not only for the ground-state band, but for negative-parity excited states and the Hoyle state.

Fukuoka, Y.; Nakatsukasa, T.; Funaki, Y.; Yabana, K. [Institute of Physics, University of Tsukuba, Tsukuba, 305-8571 (Japan); RIKEN Nishina Center, Wako-shi 351-0198 (Japan) and Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8571 (Japan); RIKEN Nishina Center, Wako-shi 351-0198 (Japan); Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8571 (Japan) and RIKEN Nishina Center, Wako-shi 351-0198 (Japan)

2012-10-20T23:59:59.000Z

454

Taking Biodiversity into Account in Territorial Planning Documents: A Methodological Approach Applied to the Marine Field  

Science Journals Connector (OSTI)

Then, specific attention was devoted to the marine domain with three regional planning documents: the ... SCOT (Scheme of Territorial Coherency), the marine ZNIEFF (Zone with Flora and Fauna Interest ... , we fir...

E. Seigneur; N. Mazouni

2011-01-01T23:59:59.000Z

455

A Rigid-Field Hydrodynamics approach to modelling the magnetospheres of massive stars  

Science Journals Connector (OSTI)

......increase of the centrifugal force makes it a potentially important...appendix of TO05, the centrifugal force acting on this plasma should...characteristic equation The fundamental (m= 0) mode has a zero frequency...Stegun I. A., 1972, Handbook of Mathematical Functions......

R. H. D. Townsend; S. P. Owocki; A. Ud-Doula

2007-11-21T23:59:59.000Z

456

A Hierarchical Multiscale Approach to History Matching and Optimization for Reservoir Management in Mature Fields  

E-Print Network [OSTI]

Reservoir management typically focuses on maximizing oil and gas recovery from a reservoir based on facts and information while minimizing capital and operating investments. Modern reservoir management uses history-matched simulation model...

Park, Han-Young

2012-10-19T23:59:59.000Z

457

A Systematic Approach to Offshore Fields Development Using an Integrated Workflow  

E-Print Network [OSTI]

right Vogel equation and V = 1 barb2right Fetkovich equation [ ]SrrB phkq weoo o o +?? ?? ? ?= )472.0ln(2.1418.1 1 max, ? ???????????...............(eq.1.7) 8 ( ) ( )[ ] [ ]SrrB ppppphkq weoo wfwfo o + ??= )472.0ln(2.254 8.02.01 2...

Alqahtani, Mari H.

2010-10-12T23:59:59.000Z

458

An Optimization Approach to the Design of Multi-Size Heliostat fields  

E-Print Network [OSTI]

May 28, 2014 ... Power Tower system with heliostats of different sizes is addressed. ... energy is transferred to a heat transfer fluid to produce electricity through...

2014-05-28T23:59:59.000Z

459

A Multi-Methods Approach to HRA and Human Performance Modeling: A Field Assessment  

SciTech Connect (OSTI)

The Advanced Test Reactor (ATR) is a research reactor at the Idaho National Laboratory is primarily designed and used to test materials to be used in other, larger-scale and prototype reactors. The reactor offers various specialized systems and allows certain experiments to be run at their own temperature and pressure. The ATR Canal temporarily stores completed experiments and used fuel. It also has facilities to conduct underwater operations such as experiment examination or removal. In reviewing the ATR safety basis, a number of concerns were identified involving the ATR canal. A brief study identified ergonomic issues involving the manual handling of fuel elements in the canal that may increase the probability of human error and possible unwanted acute physical outcomes to the operator. In response to this concern, that refined the previous HRA scoping analysis by determining the probability of the inadvertent exposure of a fuel element to the air during fuel movement and inspection was conducted. The HRA analysis employed the SPAR-H method and was supplemented by information gained from a detailed analysis of the fuel inspection and transfer tasks. This latter analysis included ergonomics, work cycles, task duration, and workload imposed by tool and workplace characteristics, personal protective clothing, and operational practices that have the potential to increase physical and mental workload. Part of this analysis consisted of NASA-TLX analyses, combined with operational sequence analysis, computational human performance analysis (CHPA), and 3D graphical modeling to determine task failures and precursors to such failures that have safety implications. Experience in applying multiple analysis techniques in support of HRA methods is discussed.

Jacques Hugo; David I Gertman

2012-06-01T23:59:59.000Z

460

Topologically Massive Yang-Mills field on the Null-Plane: A Hamilton-Jacobi approach  

SciTech Connect (OSTI)

Non-abelian gauge theories are super-renormalizable in 2+1 dimensions and suffer from infrared divergences. These divergences can be avoided by adding a Chern-Simons term, i.e., building a Topologically Massive Theory. In this sense, we are interested in the study of the Topologically Massive Yang-Mills theory on the Null-Plane. Since this is a gauge theory, we need to analyze its constraint structure which is done with the Hamilton-Jacobi formalism. We are able to find the complete set of Hamiltonian densities, and build the Generalized Brackets of the theory. With the GB we obtain a set of involutive Hamiltonian densities, generators of the evolution of the system.

Bertin, M. C.; Pimentel, B. M.; Valcarcel, C. E. [Instituto de Fisica Teorica, UNESP-Sao Paulo State University, Caixa Postal 70532-2, 01156-970, Sao Paulo, SP (Brazil); Zambrano, G. E. R. [Departamento de Fisica, Universidad de Narino, Calle 18 Carrera 50, San Juan de Pasto, Narino (Colombia)

2010-11-12T23:59:59.000Z

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Subtask 4.24 - Field Evaluation of Novel Approach for Obtaining Metal Emission Data  

SciTech Connect (OSTI)

Over the past two decades, emissions of mercury, nonmercury metals, and acid gases from energy generation and chemical production have increasingly become an environmental concern. On February 16, 2012, the U.S. Environmental Protection Agency (EPA) promulgated the Mercury and Air Toxics Standards (MATS) to reduce mercury, nonmercury metals, and HCl emissions from coal-fired power plants. The current reference methods for trace metals and halogens are wet-chemistry methods, EPA Method (M) 29 and M26A, respectively. As a possible alternative to EPA M29 and M26A, the Energy & Environmental Research Center (EERC) has developed a novel multielement sorbent trap (ME-ST) method to be used to sample for trace elements and/or halogens. Testing was conducted at three different power plants, and the results show that for halogens, the ME-ST halogen (ME-ST-H) method did not show any significant bias compared to EPA M26A and appears to be a potential candidate to serve as an alternative to the reference method. For metals, the ME-ST metals (ME-ST-M) method offers a lower detection limit compared to EPA M29 and generally produced comparable data for Sb, As, Be, Cd, Co, Hg, and Se. Both the ME-ST-M and M29 had problems associated with high blanks for Ni, Pb, Cr, and Mn. Although this problem has been greatly reduced through improved trap design and material selection, additional research is still needed to explore possible longer sampling durations and/or selection of lower background materials before the ME-ST-M can be considered as a potential alternative method for all the trace metals listed in MATS.

Pavlish, John; Laudal, Dennis; Thompson, Jeffrey

2013-12-31T23:59:59.000Z

462

Reverse?field reciprocity for conducting specimens in magnetic fields  

Science Journals Connector (OSTI)

A new static?electromagnetic reciprocity principle is presented extending ordinary resistive reciprocity to the case of nonzero magnetic fields by requiring the magnetic field to be reversed when the reciprocal measurement is made. The principle is supported by measurements on various types of specimens including those which exhibit the quantum?Hall effect. A derivation using elementary electromagnetic theory shows that the principle will hold provided only that the specimen is electrically linear (Ohmic) and that the Onsager form for the conductivity tensor applies throughout. The principle has important implications for electrical measurements on semiconductors in applied?magnetic fields.

H. H. Sample; W. J. Bruno; S. B. Sample; E. K. Sichel

1987-01-01T23:59:59.000Z

463

Local-field factors in cubic crystals. II  

Science Journals Connector (OSTI)

We investigate the connection between the self-consistent approach of the electronic dielectric constant in solids due to Adler and Wiser which includes the multipolar effects and the local-field effects through the inversion of the dielectric matrix ?KK? and a simplified approach presented by Guertin and Stern expressing the local-field effects in the electric-dipole approximation through a screening parameter ? connected to the delocalization of the charge distribution. The latter treatment can be viewed as resulting from an approximate inversion of the dielectric matrix through a closure hypothesis whose validity has been tested in two limiting cases, namely a one-band metal and a two-band insulator. In the weak-binding limit, there appears no local-field correction at all, and the multipolar effects are important; conversely, in the tight-binding limit, the electric-dipole approximation is valid and the local-field effects are at most equal to the Lorentz correction.

R. Bonneville

1982-07-15T23:59:59.000Z

464

A Novel Approach to Experimental Studies of Mineral DIsoolution Kinetics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Novel ApproAch to experimeNtAl Novel ApproAch to experimeNtAl StudieS of miNerAl diSSolutioN KiNeticS Background DOE is conducting pilot CO 2 injection tests to evaluate the concept of geologic sequestration. One strategy that has the potential to enhance CO 2 solubility and reduce the risk of CO 2 leaking back to the surface is dissolution of indigenous minerals in the geological formation and formation of secondary carbonate precipitates. This both increases the brine pH and immobilizes the CO 2 . Clearly, the rates at which these dissolution and precipitation reactions occur directly determine the efficiency of this option. However, one of the fundamental problems in modern geochemistry is the persistent two to five orders of magnitude discrepancy between laboratory-measured and field-derived

465

Novel Approach to Linear Accelerator Superconducting Magnet System  

SciTech Connect (OSTI)

Superconducting Linear Accelerators include a superconducting magnet system for particle beam transportation that provides the beam focusing and steering. This system consists of a large number of quadrupole magnets and dipole correctors mounted inside or between cryomodules with SCRF cavities. Each magnet has current leads and powered from its own power supply. The paper proposes a novel approach to magnet powering based on using superconducting persistent current switches. A group of magnets is powered from the same power supply through the common, for the group of cryomodules, electrical bus and pair of current leads. Superconducting switches direct the current to the chosen magnet and close the circuit providing the magnet operation in a persistent current mode. Two persistent current switches were fabricated and tested. In the paper also presented the results of magnetic field simulations, decay time constants analysis, and a way of improving quadrupole magnetic center stability. Such approach substantially reduces the magnet system cost and increases the reliability.

Kashikhin, Vladimir; /Fermilab

2011-11-28T23:59:59.000Z

466

Variational Principles for Constrained Electromagnetic Field and Papapetrou Equation  

E-Print Network [OSTI]

In our previous article [4] an approach to derive Papapetrou equations for constrained electromagnetic field was demonstrated by use of field variational principles. The aim of current work is to present more universal technique of deduction of the equations which could be applied to another types of non-scalar fields. It is based on Noether theorem formulated in terms of Cartan' formalism of orthonormal frames. Under infinitesimal coordinate transformation the one leads to equation which includes volume force of spin-gravitational interaction. Papapetrou equation for vector of propagation of the wave is derived on base of the equation. Such manner of deduction allows to formulate more accurately the constraints and clarify equations for the potential and for spin.

A. T. Muminov

2007-06-28T23:59:59.000Z

467

Casimir effect for a scalar field via Krein quantization  

SciTech Connect (OSTI)

In this work, we present a rather simple method to study the Casimir effect on a spherical shell for a massless scalar field with Dirichlet boundary condition by applying the indefinite metric field (Krein) quantization technique. In this technique, the field operators are constructed from both negative and positive norm states. Having understood that negative norm states are un-physical, they are only used as a mathematical tool for renormalizing the theory and then one can get rid of them by imposing some proper physical conditions. -- Highlights: A modification of QFT is considered to address the vacuum energy divergence problem. Casimir energy of a spherical shell is calculated, through this approach. In this technique, it is shown, the theory is automatically regularized.

Pejhan, H., E-mail: h.pejhan@piau.ac.ir [Department of Physics, Science and Research Branch, Islamic Azad University, Tehran (Iran, Islamic Republic of); Tanhayi, M.R., E-mail: m_tanhayi@iauctb.ac.ir [Department of Physics, Islamic Azad University, Central Branch, Tehran (Iran, Islamic Republic of); Takook, M.V., E-mail: takook@razi.ac.ir [Department of Physics, Science and Research Branch, Islamic Azad University, Tehran (Iran, Islamic Republic of)

2014-02-15T23:59:59.000Z

468

A generalized Debye source approach to electromagnetic scattering in layered media  

SciTech Connect (OSTI)

The standard solution to time-harmonic electromagnetic scattering problems in homogeneous layered media relies on the use of the electric field dyadic Green's function. However, for small values of the governing angular frequency ?, evaluation of the electric field using this Green's function exhibits numerical instability. In this short note, we provide an alternative approach which is immune from this low-frequency breakdown as ? ? 0. Our approach is based on the generalized Debye source representation of Maxwell fields. Using this formulation, the electric and magnetic fields gracefully decouple in the static limit, a behavior similar to that of the classical Lorenz-Debye-Mie representation of Maxwell fields in spherical geometries. We derive extensions of both the generalized Deybe source and Lorenz-Debye-Mie representations to planar geometries, as well as provide equations for the solution of scattering from a perfectly conducting half-space and in layered media using a Sommerfeld-like approach. These formulas are stable as ? tends to zero, and offer alternatives to the electric field dyadic Green's function.

ONeil, Michael, E-mail: oneil@cims.nyu.edu [Courant Institute of Mathematical Sciences, New York University, 251 Mercer Street, New York, New York 10012 (United States)] [Courant Institute of Mathematical Sciences, New York University, 251 Mercer Street, New York, New York 10012 (United States)

2014-01-15T23:59:59.000Z

469

Acceleration of the matrix multiplication of Radiance three phase  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Acceleration of the matrix multiplication of Radiance three phase Acceleration of the matrix multiplication of Radiance three phase daylighting simulations with parallel computing on heterogeneous hardware of personal computer Title Acceleration of the matrix multiplication of Radiance three phase daylighting simulations with parallel computing on heterogeneous hardware of personal computer Publication Type Journal Article LBNL Report Number LBNL-6461E Year of Publication 2013 Authors Zuo, Wangda, Andrew McNeil, Michael Wetter, and Eleanor S. Lee Journal Journal of Building Performance Simulation Keywords daylighting simulation, graphics processing unit, multicore central processing unit, OpenCL, parallel computing Abstract Building designers are increasingly relying on complex fenestration systems to reduce energy consumed for lighting and HVAC in low energy buildings. Radiance, a lighting simulation program, has been used to conduct daylighting simulations for complex fenestration systems. Depending on the configurations, the simulation can take hours or even days using a personal computer. This paper describes how to accelerate the matrix multiplication portion of a Radiance three-phase daylight simulation by conducting parallel computing on heterogeneous hardware of a personal computer. The algorithm was optimized and the computational part was implemented in parallel using OpenCL. The speed of new approach was evaluated using various daylighting simulation cases on a multicore central processing unit and a graphics processing unit. Based on the measurements and analysis of the time usage for the Radiance daylighting simulation, further speedups can be achieved by using fast I/O devices and storing the data in a binary format.

470

ARM - Field Campaign - Precision Gas Sampling (PGS) Validation Field  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Precision Gas Sampling (PGS) Validation Field Campaign 2003.04.02 - 2003.09.02 Lead Scientist : Marc Fischer For data sets, see below. Description Ecosystem-atmosphere exchange of carbon, water, and energy varies with climate, soil, and land management, in ways 1) that influence the CO2 flux and planetary boundary layer CO2 concentration in ARM CART and 2) that we can model and predict. This activity repeated portable flux system measurements that we performed in spring 2002, by continuing measurements of the spatial heterogeneity of carbon, water, and energy fluxes in fields surrounding the ARM SGP Central Facility (CF).

471

New Approach to Assess Volatile Contamination in Vadose Zone Provides Path  

Broader source: Energy.gov (indexed) [DOE]

Approach to Assess Volatile Contamination in Vadose Zone Approach to Assess Volatile Contamination in Vadose Zone Provides Path Forward for Site Closure New Approach to Assess Volatile Contamination in Vadose Zone Provides Path Forward for Site Closure April 24, 2012 - 12:00pm Addthis Conceptual site model for evaluating soil vapor extraction system performance to determine if the system should be optimized, terminated, or transitioned to another approach. Conceptual site model for evaluating soil vapor extraction system performance to determine if the system should be optimized, terminated, or transitioned to another approach. RICHLAND, Wash. and LOS ALAMOS, N.M. - Through the Deep Vadose Zone-Applied Field Research Initiative (DVZ-AFRI), scientists and engineers from Pacific Northwest National Laboratory, CH2M HILL Plateau Remediation

472

Quantum Field and Cosmic Field-Finite Geometrical Field Theory of Matter Motion Part Three  

E-Print Network [OSTI]

This research establishes an operational measurement way to express the quantum field theory in a geometrical form. In four-dimensional spacetime continuum, the orthogonal rotation is defined. It forms two sets of equations: one set is geometrical equations, another set is the motion equations. The Lorentz transformation can be directly derived from the geometrical equations, and the proper time of general relativity is well expressed by time displacement field. By the motion equations, the typical time displacement field of matter motion is discussed. The research shows that the quantum field theory can be established based on the concept of orthogonal rotation. On this sense, the quantum matter motion in physics is viewed as the orthogonal rotation of spacetime continuum. In this paper, it shows that there are three typical quantum solutions. One is particle-like solution, one is generation-type solution, and one is pure wave type solution. For each typical solution, the force fields are different. Many fea...

Xiao, J

2005-01-01T23:59:59.000Z

473

Dirac-Brueckner Approach to Hyperon Interactions and Hypernuclei  

E-Print Network [OSTI]

The density dependent relativistic hadron (DDRH) theory is introduced as an effective field theory for nuclei and hypernuclei. A Dirac-Brueckner approach to in-medium nucleon-hyperon interactions is presented. Density dependent meson-baryon vertices are determined from DBHF self-energies in infinite matter. Scaling laws for hyperon vertices are derived from a diagrammatic analysis of self-energies. In a local density approximation the DB vertices are applied in relativistic DDRH Hartree calculations to finite hypernuclei. Lambda single particle spectra and spin-orbit splittings are described reasonably well over the whole mass region.

H. Lenske; C. M. Keil; F. Hofmann; S. Briganti

2000-08-09T23:59:59.000Z

474

An approach to electromagnetism from the general relativity  

E-Print Network [OSTI]

Classical gravitation is so similar to the electrostatic that the possible unification has been investigated for many years. Although electromagnetism is formulated successfully by quantum field theory, this paper proposes a simple approach to describe the electromagnetism from the macroscopic perspective of general relativity. The hypothesis is based on two charged particles that cause disturbance energy sufficient to disrupt the space-time and explain approximately Maxwell's equations. Therefore, with such this simple idea, we suggest the possibility that the geometric relationship between electromagnetism and gravitation is not yet fully exhausted.

Robert Monjo i Agut

2013-12-02T23:59:59.000Z

475

High field gradient particle accelerator  

DOE Patents [OSTI]

A high electric field gradient electron accelerator utilizing short duration, microwave radiation, and capable of operating at high field gradients for high energy physics applications or at reduced electric field gradients for high average current intermediate energy accelerator applications is disclosed. Particles are accelerated in a smooth bore, periodic undulating waveguide, wherein the period is so selected that the particles slip an integral number of cycles of the r.f. wave every period of the structure. This phase step of the particles produces substantially continuous acceleration in a traveling wave without transverse magnetic or other guide means for the particle. 10 figs.

Nation, J.A.; Greenwald, S.

1989-05-30T23:59:59.000Z

476

High field gradient particle accelerator  

DOE Patents [OSTI]

A high electric field gradient electron accelerator utilizing short duration, microwave radiation, and capable of operating at high field gradients for high energy physics applications or at reduced electric field gradients for high average current intermediate energy accelerator applications. Particles are accelerated in a smooth bore, periodic undulating waveguide, wherein the period is so selected that the particles slip an integral number of cycles of the r.f. wave every period of the structure. This phase step of the particles produces substantially continuous acceleration in a traveling wave without transverse magnetic or other guide means for the particle.

Nation, John A. (Ithaca, NY); Greenwald, Shlomo (Haifa, IL)

1989-01-01T23:59:59.000Z

477

Generation of Gaussian Density Fields  

E-Print Network [OSTI]

This document describes analytical and numerical techniques for the generation of Gaussian density fields, which represent cosmological density perturbations. The mathematical techniques involved in the generation of density harmonics in k-space, the filtering of the density fields, and the normalization of the power spectrum to the measured temperature fluctuations of the Cosmic Microwave Background, are presented in details. These techniques are well-known amongst experts, but the current literature lacks a formal description. I hope that this technical report will prove useful to new researchers moving into this field, sparing them the task of reinventing the wheel.

Hugo Martel

2005-06-22T23:59:59.000Z

478

Two charges on plane in a magnetic field: II. Moving neutral quantum system across a magnetic field  

E-Print Network [OSTI]

The moving neutral system of two Coulomb charges on a plane subject to a constant magnetic field $B$ perpendicular to the plane is considered. It is shown that the composite system of finite total mass is bound for any center-of-mass momentum $P$ and magnetic field strength; the energy of the ground state is calculated accurately using a variational approach. Their accuracy is cross-checked in a Lagrange-mesh method for $B=1$ a.u. and in a perturbation theory at small $B$ and $P$. The constructed trial function has the property of being a uniform approximation of the exact eigenfunction. For a Hydrogen atom and a Positronium a double perturbation theory in $B$ and $P$ is developed and the first corrections are found algebraically. A phenomenon of a sharp change of energy behavior for a certain center-of-mass momentum and a fixed magnetic field is indicated.

M. A. Escobar-Ruiz; A. V. Turbiner

2014-07-10T23:59:59.000Z

479

Summing Finite Series?A Hybrid Approach  

Science Journals Connector (OSTI)

......Finite Series-A Hybrid Approach OLIVER ANDERSON AFIMA Department of Management Science, Pennsylvania State...Series--A Hybrid Approach OLIVER ANDERSON, AFIMA Department of Management Science, Pennsylvania State......

OLIVER ANDERSON

1987-01-01T23:59:59.000Z

480

A linguistic approach to user interface design  

Science Journals Connector (OSTI)

... 2001 Elsevier Science B.V. All rights...Articles A linguistic approach to user interface...User Interface Management Systems 1992 Morgan-Kaufman...object-oriented approach to distributed data management, The Journal of Systems......

Rumen Dimov Andreev

2001-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "approach daylighting field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Storageflow: An SDN Approach to Storage Networks  

E-Print Network [OSTI]

to perform encoding operations on select flows upon the request from the controller. Our approach utilizes commodity hardware, which makes it cost-efficient and attractive. In contrast to the traditional approaches which rely on dedicated servers to perform...

Bose, Pradipta

2014-08-04T23:59:59.000Z

482

Nonideal evolution of nonaxisymmetric, force-free magnetic fields in a magnetar  

E-Print Network [OSTI]

Recent numerical magnetohydrodynamic calculations by Braithwaite and collaborators support the `fossil field' hypothesis regarding the origin of magnetic fields in compact stars and suggest that the resistive evolution of the fossil field can explain the reorganisation and decay of magnetar magnetic fields. Here, these findings are modelled analytically by allowing the stellar magnetic field to relax through a quasistatic sequence of nonaxisymmetric, force-free states, by analogy with spheromak relaxation experiments, starting from a random field. Under the hypothesis that the force-free modes approach energy equipartition in the absence of resistivity, the output of the numerical calculations is semiquantitatively recovered: the field settles down to a linked poloidal-toroidal configuration, which inflates and becomes more toroidal as time passes. A qualitatively similar (but not identical) end state is reached if the magnetic field evolves by exchanging helicity between small and large scales according to an $\\alpha$-dynamo-like, mean-field mechanism, arising from the fluctuating electromotive force produced by the initial random field. The impossibility of matching a force-free internal field to a potential exterior field is discussed in the magnetar context.

Alpha Mastrano; Andrew Melatos

2008-04-25T23:59:59.000Z

483

Optimization Online - Semidefinite Optimization Approaches to ...  

E-Print Network [OSTI]

Sep 16, 2014 ... Semidefinite Optimization Approaches to Applications in Facility ... Category 2: Applications -- OR and Management Sciences (Transportation ).

Philipp Hungerlaender

2014-09-16T23:59:59.000Z

484

Joint Genome Institute's Automation Approach and History  

E-Print Network [OSTI]

Joint Genome Institutes Automation Approach and Historythroughput environment; automation does not necessarilyissues Islands of Automation modular instruments with

Roberts, Simon

2006-01-01T23:59:59.000Z

485

Freedom Field | Open Energy Information  

Open Energy Info (EERE)

Field Field Jump to: navigation, search Logo: Freedom Field Name Freedom Field Address 3333 Kishwaukee Street Place Rockford, Illinois Zip 61109 Year founded 2009 Phone number 815-387-7570 Coordinates 42.2243753°, -89.0869292° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.2243753,"lon":-89.0869292,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

486

The Sun's global magnetic field  

Science Journals Connector (OSTI)

...the plasma in the Sun's atmosphere...representation of the Sun's large-scale...high density and temperature contrast between...the density and temperature distributions found in the global...magnetic fields on the Sun and other stars...

2012-01-01T23:59:59.000Z

487

Field ionization from carbon nanofibers  

E-Print Network [OSTI]

The Micro Gas Analyzer project aims to develop power-efficient, high resolution, high sensitivity, portable and real-time gas sensors. We developed a field ionizer array based on gated CNTs. Arrays of CNTs are used because ...

Adeoti, Bosun J

2008-01-01T23:59:59.000Z

488

Neutron in Strong Magnetic Fields  

E-Print Network [OSTI]

Relativistic world-line Hamiltonian for strongly interacting 3q systems in magnetic field is derived from the path integral for the corresponding Green's function. The neutral baryon Hamiltonian in magnetic field obeys the pseudomomentum conservation and allows a factorization of the c.m. and internal motion. The resulting expression for the baryon mass in magnetic field is written explicitly with the account of hyperfine, OPE and OGE (color Coulomb) interaction. The neutron mass is fast decreasing with magnetic field, losing 1/2 of its value at eB~0.25 GeV^2 and is nearly zero at eB~0.5 GeV^2. Possible physical consequences of the calculated mass trajectory of the neutron, M_n(B), are presented and discussed.

M. A. Andreichikov; B. O. Kerbikov; V. D. Orlovsky; Yu. A. Simonov

2013-12-08T23:59:59.000Z

489

Carlsbad Field Office - Fact Sheet  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the nation's nuclear waste disposal problem Carlsbad Field Office The U.S. Department of Energy (DOE) created the Carlsbad Area Office in late 1993 to lead the nation's transuranic...

490

Deep Vadose Zone Field Activities  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

HANFORD ADVISORY BOARD, RAP March 6, 2013 Presented by: John Morse DEEP VADOSE ZONE ACTIVITIES Page 2 Deep Vadose Zone Areas Page 3 Deep Vadose Zone Field Activities FY 2014...

491

ROSAT wide field camera mirrors  

Science Journals Connector (OSTI)

The ROSAT wide field camera (WFC) is an XUV telescope operating in the 12250-eV energy band. The mirror system utilizes Wolter-Schwarzschild type I (WS I) grazing incidence optics...

Willingale, R

1988-01-01T23:59:59.000Z

492

Modulation Field Induces Universe Rotation  

E-Print Network [OSTI]

In this paper, we consider a time dependent module field on spacetime extension without modifying commutative relation on noncommutative quantum plane. The significant idea is that $Lorentz$ symmetry is conserved in module and unmodule coordinate. We focus on the redefinition of spacetime structure without considering noncommutative bosonic gas in deforming the product between fields. Which the null vector is a vector on orthogonal $D$ dimensional $Hilbert$ spacetime. In $Riemann$ geometry, the equation of motion is deformed from an induced rotation. Particle field survives on the state composed by two theoretical assumed $null$ vectors, one is commutative, another is anticommutative. In the point of view, neutrino and photon mass are produced by its shift, the rotated effect generates a horizon in redefining particle field.

Chien Yu Chen

2008-06-30T23:59:59.000Z

493

Field Mapping | Open Energy Information  

Open Energy Info (EERE)

Field Mapping Field Mapping Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Field Mapping Details Activities (59) Areas (35) Regions (6) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Data Collection and Mapping Parent Exploration Technique: Data Collection and Mapping Information Provided by Technique Lithology: Map surface geology and hydrothermal alteration. Stratigraphic/Structural: Map fault and fracture patterns, kinematic information. Hydrological: Map surface manifestations of geothermal systems. Thermal: Map surface temperature. Cost Information Low-End Estimate (USD): 400.0040,000 centUSD 0.4 kUSD 4.0e-4 MUSD 4.0e-7 TUSD / hour Median Estimate (USD): 600.0060,000 centUSD

494

Electrochemical formation of field emitters  

DOE Patents [OSTI]

Electrochemical formation of field emitters, particularly useful in the fabrication of flat panel displays is disclosed. The fabrication involves field emitting points in a gated field emitter structure. Metal field emitters are formed by electroplating and the shape of the formed emitter is controlled by the potential imposed on the gate as well as on a separate counter electrode. This allows sharp emitters to be formed in a more inexpensive and manufacturable process than vacuum deposition processes used at present. The fabrication process involves etching of the gate metal and the dielectric layer down to the resistor layer, and then electroplating the etched area and forming an electroplated emitter point in the etched area. 12 figs.

Bernhardt, A.F.

1999-03-16T23:59:59.000Z

495

Extreme field physics and QED  

E-Print Network [OSTI]

We give a brief overview of the most important QED effects that can be studied in the presence of extreme fields such as those expected at the Vulcan laser upgraded to a power of 10 Petawatts.

Thomas Heinzl; Anton Ilderton

2008-09-19T23:59:59.000Z

496

Vadose Zone Transport Field Study: Summary Report  

SciTech Connect (OSTI)

From FY 2000 through FY 2003, a series of vadose zone transport field experiments were conducted as part of the U.S. Department of Energys Groundwater/Vadose Zone Integration Project Science and Technology Project, now known as the Remediation and Closure Science Project, and managed by the Pacific Northwest National Laboratory (PNNL). The series of experiments included two major field campaigns, one at a 299-E24-11 injection test site near PUREX and a second at a clastic dike site off Army Loop Road. The goals of these experiments were to improve our understanding of vadose zone transport processes; to develop data sets to validate and calibrate vadose zone flow and transport models; and to identify advanced monitoring techniques useful for evaluating flow-and-transport mechanisms and delineating contaminant plumes in the vadose zone at the Hanford Site. This report summarizes the key findings from the field studies and demonstrates how data collected from these studies are being used to improve conceptual models and develop numerical models of flow and transport in Hanfords vadose zone. Results of these tests have led to a better understanding of the vadose zone. Fine-scale geologic heterogeneities, including grain fabric and lamination, were observed to have a strong effect on the large-scale behavior of contaminant plumes, primarily through increased lateral spreading resulting from anisotropy. Conceptual models have been updated to include lateral spreading and numerical models of unsaturated flow and transport have revised accordingly. A new robust model based on the concept of a connectivity tensor was developed to describe saturation-dependent anisotropy in strongly heterogeneous soils and has been incorporated into PNNLs Subsurface Transport Over Multiple Phases (STOMP) simulator. Application to field-scale transport problems have led to a better understanding plume behavior at a number of sites where lateral spreading may have dominated waste migration (e.g. BC Cribs and Trenches). The improved models have been also coupled with inverse models and newly-developed parameter scaling techniques to allow estimation of field-scale and effective transport parameters for the vadose zone. The development and utility of pedotransfer functions for describing fine-scale hydrogeochemical heterogeneity and for incorporating this heterogeneity into reactive transport models was explored. An approach based on grain-size statistics appears feasible and has been used to describe heterogeneity in hydraulic properties and sorption properties, such as the cation exchange capacity and the specific surface area of Hanford sediments. This work has also led to the development of inverse modeling capabilities for time-dependent, subsurface, reactive transport with transient flow fields using an automated optimization algorithm. In addition, a number of geophysical techniques investigated for their potential to provide detailed information on the subtle changes in lithology and bedding surfaces; plume delineation, leak detection. High-resolution resistivity is now being used for detecting saline plumes at several waste sites at Hanford, including tank farms. Results from the field studies and associated analysis have appeared in more than 46 publications generated over the past 4 years. These publications include test plans and status reports, in addition to numerous technical notes and peer reviewed papers.

Ward, Andy L.; Conrad, Mark E.; Daily, William D.; Fink, James B.; Freedman, Vicky L.; Gee, Glendon W.; Hoversten, Gary M.; Keller, Jason M.; Majer, Ernest L.; Murray, Christopher J.; White, Mark D.; Yabusaki, Steven B.; Zhang, Z. F.

2006-07-31T23:59:59.000Z

497

An Exotic Approach to Hadron Physics  

Science Journals Connector (OSTI)

......Exotic Approach to Hadron Physics 225 by "sum over external...and a meson, it should pass through a heavier state...Exotic Approach to Hadron Physics 227 1 2 3 4 5 6 7 z -0...may estimate the decay rate of the meson as a tunneling...Exotic Approach to Hadron Physics 229 6. Deformation of......

Masako Bando; Yoko Fukase; Jonathan Shock; Akio Sugamoto; Sachiko Terunuma

2007-03-01T23:59:59.000Z

498

Economic Approaches to Understanding Scientific Norms  

E-Print Network [OSTI]

Economic Approaches to Understanding Scientific Norms Michael Strevens To appear in Episteme A A theme of much work taking an "economic approach" to the study of sci- ence is the interaction between of formal methods, proponents of the economic approach offer what are in substantive terms profoundly

Strevens, Michael

499

Diffeomorphism groups and anyon fields  

SciTech Connect (OSTI)

We make use of unitary representations of the group of diffeomorphisms of the plane to construct an explicit field theory of anyons. The resulting anyon fields satisfy q-commutators, where q is the well-known phase shift associated with a single counterclockwise exchange of a pair of anyons. Our method uses a realization of the braid group by means of paths in the plane, that transform naturally under diffeomorphisms of R{sup 2}.

Goldin, G.A. [Rutgers Univ., New Brunswick, NJ (United States); Sharp, D.H. [Los Alamos National Lab., NM (United States)

1995-09-01T23:59:59.000Z

500

Electromagnetic field and cosmic censorship  

E-Print Network [OSTI]

We construct a gedanken experiment in which an extremal Kerr black hole interacts with a test electromagnetic field. Using Teukolsky's solutions for electromagnetic perturbations in Kerr spacetime, and the conservation laws imposed by the energy momentum tensor of the electromagnetic field and the Killing vectors of the spacetime, we prove that this interaction cannot convert the black hole into a naked singularity, thus cosmic censorship conjecture is not violated in this case.

Koray Dzta?

2014-04-09T23:59:59.000Z