Sample records for daylight time edt

  1. Fall Back Daylight Savings time is November

    E-Print Network [OSTI]

    Linsley, Braddock K.

    Fall Back ­ Daylight Savings time is November 2nd.The Energy Policy Act of 2005 changed both the starting and ending dates. Beginning in 2007, daylight time starts on the second Sunday in March and ends

  2. Does Extending Daylight Saving Time Save Energy? Evidence from an Australian Experiment

    E-Print Network [OSTI]

    KELLOGG, RYAN M; Wolff, Hendrik

    2007-01-01T23:59:59.000Z

    Tellier, F. (2005): Daylight Saving Time and EnergyCEC, 2001: Effects of Daylight Saving Time on California2004): The effects of daylight and daylight saving time on

  3. Do Daylight-Saving Time Adjustments Really Impact Stock Returns?

    E-Print Network [OSTI]

    Steigerwald, Douglas G; Conte, Marc

    2007-01-01T23:59:59.000Z

    I. Taylor, 1935, World Daylight Saving Time, Chicago: Cur-Sleep at the Market: The Daylight Saving Anomaly”, AmericanSleep at the Market: The Daylight Saving Anomaly: Reply”,

  4. Does Daylight Savings Time Affect Traffic Accidents?

    E-Print Network [OSTI]

    Deen, Sophia 1988-

    2012-04-20T23:59:59.000Z

    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...

  5. Does Daylight Saving Time Save Energy? Evidence from a Natural Experiment in Indiana

    E-Print Network [OSTI]

    Kotchen, Matthew J; Grant, Laura E.

    2008-01-01T23:59:59.000Z

    The Energy Impact of Daylight Saving Time Implementation insleep at the market: The daylight saving anomaly. Americansleep at the market: The daylight saving anomaly: Reply.

  6. Does Daylight Saving Time Save Energy? Evidence from a Natural Experiment in Indiana

    E-Print Network [OSTI]

    Kotchen, Matthew J; Grant, Laura E.

    2008-01-01T23:59:59.000Z

    Does Extending Daylight Saving Time Save Energy? Evi- denceWP 179 Does Daylight Saving Time Save Energy? Evidence fromwww.ucei.org Does Daylight Saving Time Save Energy? Evidence

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

    E-Print Network [OSTI]

    Lee, Eleanor S.; Selkowitz, Stephen E.

    2006-01-01T23:59:59.000Z

    1999. “Analysis of Daylight Responsive Dimming Systemglare and increase daylight, and 2) Area B had digitalthe stair to approximate the daylight contributions from the

  8. Time for a Change? It's not just Daylight Savings Time that should be abolished!

    E-Print Network [OSTI]

    1 Time for a Change? It's not just Daylight Savings Time that should be abolished! Sunday, March 11. It is just that the clocks are set differently! By government edict! I advocate not just abolishing Daylight of time zone and/or daylight savings time confusion. Every clock and wristwatch in the world would show

  9. The effects of daylight saving time on vehicle crashes in Minnesota Arthur Huang a,

    E-Print Network [OSTI]

    Levinson, David M.

    The effects of daylight saving time on vehicle crashes in Minnesota Arthur Huang a, , David: Daylight saving time Vehicle crashes Exposure Traffic volume Introduction: Daylight saving time (DST analysis shows that overall DST reduces crashes. Impact on industry: Daylight saving time can lead to fewer

  10. (Daylight saving time (DST), implemented as an energy saving policy, impacts many other aspects of

    E-Print Network [OSTI]

    Levinson, David M.

    Abstract( (Daylight saving time (DST), implemented as an energy saving policy, impacts many other(of(DST( The idea of daylight saving time is to transfer an hour of morning daylight to the evening. It is achieved (3am-9am, 9am-3pm, 3pm-9pm, 9pm-12am). The(effects(of(daylight

  11. The New York Times headquarters daylighting mockup: Monitoredperformance of the daylighting control system

    SciTech Connect (OSTI)

    Lee, Eleanor S.; Selkowitz, Stephen E.

    2006-02-24T23:59:59.000Z

    A nine-month monitored field study of the performance of automated roller shades and daylighting controls was conducted in a 401 m{sup 2} unoccupied, furnished daylighting mockup. The mockup mimicked the southwest corner of a new 110 km{sub 2} 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.

  12. Does Daylight Savings Time Affect Traffic Accidents? 

    E-Print Network [OSTI]

    Deen, Sophia 1988-

    2012-04-20T23:59:59.000Z

    in real time for a variety of reasons such as an unpredictably hot day or an outage at a power plant. The balancing market operates in real time to balance actual load and generation. Depending upon whether more or less power is needed than the day-ahead... map this model into a market with a day-ahead schedule followed by a balancing auction. We index the costs of generation (at time t) of the N firms in this market by {Cit (q), i = 1, . . . , N}. We take total demand ?Dt (p) = Dt (p)+ ?t to be the sum...

  13. DAYLIGHTING IN CAMBRIDGE LIBRARIES: SHIFTING FOCUS OVER TIME

    E-Print Network [OSTI]

    Ayona Datta

    This paper aims to explore the various transformations of Cambridge libraries over the ages focusing mainly on the changing role of daylighting in library design. The libraries have been categorised chronologically into four different groups: Medieval libraries, libraries between 16 th cent and Reformation, libraries between Reformation and 19 th cent and modern libraries. The study shows that with the shift from the rules of classicism in medieval libraries to individual styles in modern libraries, the architect has opened up enormous possibilities for design innovations in daylighting. Unlike other environmental services the elements of daylighting are undoubtedly the most visual and expressive. The particular challenge of modern library design is to manipulate natural light for reading and book storage while avoiding reflections on the VDU. It is still a field not fully explored and it remains to be seen how daylighting design can successfully meet all the needs of a modern library. 1.

  14. MANDATORY MEASURES DAYLIGHTING

    E-Print Network [OSTI]

    California at Davis, University of

    MANDATORY MEASURES DAYLIGHTING Reference: Sub-Chapter 4, Section 130.1(d) #12;SECTION 4 Daylighting daylighting controls. · Lighting in daylit zones should have multi-level steps, per Table 130.1-A · Light levels provided at night should be available at all other times · When sufficient daylight is available

  15. MANDATORY MEASURES DAYLIGHTING

    E-Print Network [OSTI]

    California at Davis, University of

    MANDATORY MEASURES DAYLIGHTING Reference: Sub-Chapter 4, Section 130.1(d) #12;SECTION 5 Daylighting daylighting controls. · Lighting in daylit zones should have multi-level steps, per Table 130.1-A · Light levels provided at night should be available at all other times · When sufficient daylight is available

  16. Impact of Extended Daylight Saving Time on National Energy Consumption Report to Congress

    SciTech Connect (OSTI)

    Belzer, D. B.; Hadley, S. W.; Chin, S-M.

    2008-10-01T23:59:59.000Z

    The Energy Policy Act of 2005 (Pub. L. No. 109-58; EPAct 2005) amended the Uniform Time Act of 1966 (Pub. L. No. 89-387) to increase the portion of the year that is subject to Daylight Saving Time. (15 U.S.C. 260a note) EPAct 2005 extended the duration of Daylight Saving Time in the spring by changing its start date from the first Sunday in April to the second Sunday in March, and in the fall by changing its end date from the last Sunday in October to the first Sunday in November. (15 U.S.C. 260a note) EPAct 2005 also called for the Department of Energy to evaluate the impact of Extended Daylight Saving Time on energy consumption in the United States and to submit a report to Congress. (15 U.S.C. 260a note) This report presents the results of impacts of Extended Daylight Saving Time on the national energy consumption in the United States. The key findings are: (1) The total electricity savings of Extended Daylight Saving Time were about 1.3 Tera Watt-hour (TWh). This corresponds to 0.5 percent per each day of Extended Daylight Saving Time, or 0.03 percent of electricity consumption over the year. In reference, the total 2007 electricity consumption in the United States was 3,900 TWh. (2) In terms of national primary energy consumption, the electricity savings translate to a reduction of 17 Trillion Btu (TBtu) over the spring and fall Extended Daylight Saving Time periods, or roughly 0.02 percent of total U.S. energy consumption during 2007 of 101,000 TBtu. (3) During Extended Daylight Saving Time, electricity savings generally occurred over a three- to five-hour period in the evening with small increases in usage during the early-morning hours. On a daily percentage basis, electricity savings were slightly greater during the March (spring) extension of Extended Daylight Saving Time than the November (fall) extension. On a regional basis, some southern portions of the United States exhibited slightly smaller impacts of Extended Daylight Saving Time on energy savings compared to the northern regions, a result possibly due to a small, offsetting increase in household air conditioning usage. (4) Changes in national traffic volume and motor gasoline consumption for passenger vehicles in 2007 were determined to be statistically insignificant and therefore, could not be attributed to Extended Daylight Saving Time.

  17. Re: Affordable Textbooks, Fall Semester Update In a message dated 10/28/2010 10:28:50 A.M. Eastern Daylight Time, nicole@studentpirgs.org

    E-Print Network [OSTI]

    Garfunkel, Eric

    .M. Eastern Daylight Time, nicole@studentpirgs.org writes: Hi everyone, There have been some exciting

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

    E-Print Network [OSTI]

    Kotchen, Matthew J.

    electricity bills. We also estimate social costs of increased pollution emissions between $1.7 to $5.5 million implemented a DST policy, with the aim of reducing demand for electrical lighting to free up more coal to estimate the effect of daylight saving time (DST) on residential electricity consumption. Our main finding

  19. CITI Program Website Downtime for Software Upgrade Starting Monday 29 July at 11 a.m. U.S. Eastern Daylight Time, the CITI Program website will be

    E-Print Network [OSTI]

    .S. Eastern Daylight Time, the CITI Program website will be unavailable for approximately two to three days

  20. EDT History Developed in late 1990's

    E-Print Network [OSTI]

    flexible and versatile ­ Responds to needs/criticisms #12;EDT Transforms Data Into Answers Bank hardening climate change affect BPA funding of restoration? ­ Shift focus to core populations ­ Different Patterning Life History Information · Spawn Timing, Location · Life Stages and Duration · Movement Patterns

  1. Correlation time of ocean ambient noise intensity in San Diego Bay and target recognition in acoustic daylight images

    E-Print Network [OSTI]

    Wadsworth, Adam J.

    2010-01-01T23:59:59.000Z

    Intensity Data Chapter 3 Acoustic Daylight Image TargetC. L. Epifanio. Acoustic Daylight: Passive Acoustic ImagingRecognition in Acoustic Daylight Images A Thesis submitted

  2. Daylighting Basics

    Broader source: Energy.gov [DOE]

    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.

  3. Time-varied daylighting performance to enable a goal-driven design process

    E-Print Network [OSTI]

    Kleindienst, Siân A. (Siân Alexandra)

    2010-01-01T23:59:59.000Z

    Due to the overwhelming number of decisions to be made during early stage design, there is a need for intuitive methods to communicate data so that it is quickly and easily understood by the designer. In daylighting analysis, ...

  4. THE DAYLIGHTING SOLUTION

    E-Print Network [OSTI]

    Selkowitz, Stephen

    2013-01-01T23:59:59.000Z

    of modulating sunlight and daylight. By intercepting directto the building owner. Daylight and sunlight have alwaysuse. While the use of daylight in homes is not seen as a

  5. Daylighting Calculation in DOE-2

    E-Print Network [OSTI]

    Winkelmann, F.C

    2013-01-01T23:59:59.000Z

    4 2.3 Daylight46 3.2.1 Exterior Daylight Availabilityof Interior Daylight Illuminance . . . . . . . . . . ..21

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

    E-Print Network [OSTI]

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

    2008-01-01T23:59:59.000Z

    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 ...

  7. daylight 12/17/2007 1 Tracking the change in the amount of daylight

    E-Print Network [OSTI]

    Taylor, Peter

    daylight 12/17/2007 1 Tracking the change in the amount of daylight Ever notice that at some times successive days? (c) (Calculus) The daylight graph has been drawn with sine-curve. Find its equation. (d) Use get the following diagram. #12;daylight 12/17/2007 2 0 2 4 6 8 10 12 14 16 18 20 0 20 40 60 80 100 120

  8. DAYLIGHTING DIRECTORY 1/1980

    E-Print Network [OSTI]

    ,

    2012-01-01T23:59:59.000Z

    shell for passive heating or cooling and daylight. -To consider daylight as having a major contribution inStr. 'NARY PROVIDING A DAYLIGHT ANALYSIS SERVICE USING

  9. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    lighting energy use under daylight linked lighting controls.simulation of annual daylight illumi- nance distributions –and J. Mardaljevic. Useful daylight illuminances: A replace-

  10. 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 ........................................................................................................ 5 Daylight quantity

  11. The Impact on Energy Consumption of Daylight Saving Clock Changes

    E-Print Network [OSTI]

    Hill, Simon I.

    The Impact on Energy Consumption of Daylight Saving Clock Changes S. I. Hilla, , F. Desobrya , E. W demonstrating po- tential energy savings which could be obtained were Great Britain to maintain Daylight Savings result from an extension of Daylight Saving Time (DST) over the months currently on Greenwich Mean Time

  12. Space, light, and time : prospective analysis of Circadian illumination for health-based daylighting with applications to healthcare architecture

    E-Print Network [OSTI]

    Pechacek, Christopher S. (Christopher Scott)

    2008-01-01T23:59:59.000Z

    Light in architecture can be studied for its objective or perceptual effects. This thesis describes an objective link between human health and architectural design. Specifically, the link between daylight and human circadian ...

  13. MANDATORY MEASURES DAYLIGHTING

    E-Print Network [OSTI]

    California at Davis, University of

    MANDATORY MEASURES DAYLIGHTING Reference: Sub-Chapter 4, Section 130.1(d) #12;SECTION 4 MINIMUM DAYLIGHTING FOR LARGE SPACES Large enclosed spaces, such as large retail warehouses, are required to have a minimum amount of daylight available when using the prescriptive method of compliance. The minimum

  14. Quantifying the Impact of Daylight Saving Clock Changes

    E-Print Network [OSTI]

    Hill, Simon I.

    Quantifying the Impact of Daylight Saving Clock Changes on Energy Consumption Simon I. Hill of Daylight Saving Clock Changes on Energy Consumption Simon I. Hill, Frédéric Desobry and Yu-Foong Chong May DST Daylight Saving Time EIA Energy Information Administration GDP Gross Domestic Product GMT

  15. Energy 101: Daylighting

    Office of Energy Efficiency and Renewable Energy (EERE)

    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.

  16. Daylight in Guinea-Bissau

    E-Print Network [OSTI]

    Hall, Hiram

    1975-01-01T23:59:59.000Z

    MYLIGfi Iii GJU£A-BISSAU by HIRAM HALL daylightdaylight of dawning dextrose of my goad the rapidsdreams of~ soul. daylight daylight of my dawning may i wrap

  17. PERFORMANCE MODELING OF DAYLIGHT INTEGRATED PHOTOSENSOR- CONTROLLED LIGHTING SYSTEMS

    E-Print Network [OSTI]

    S. Jain; R. R. Creasey; J. Himmelspach; K. P. White; M. Fu; Richard G. Mistrick

    Some building energy codes now require the incorporation of daylight into buildings and automatic photosensor-controlled switching or dimming of the electric lighting system in areas that receive daylight. This paper describes enhancements to the open-source Daysim daylight analysis software that permit users to model a photosensor control system as it will perform in a real space, considering the directional sensitivity of the photosensor, its mounting position, the space and daylight aperture geometry, window shading configuration; the electric lighting equipment and control zones; exterior obstructions; and site weather conditions. System output includes assessment of the daylight distribution in a space throughout the year, the photosensor’s ability to properly track the daylight and modify electric lighting system output, and the energy savings provided by the modeled control system. The application of daylight coefficients permits annual simulations to be conducted efficiently using hourly or finer weather data time increments. 1

  18. Energy 101: Daylighting

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    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.

  19. Energy 101: Daylighting

    ScienceCinema (OSTI)

    None

    2013-05-29T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Kleindienst, Siân

    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 ...

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

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

    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...

  2. Lighting and Daylight Harvesting

    E-Print Network [OSTI]

    Bos, J.

    2011-01-01T23:59:59.000Z

    exposing us to the latest products and technologies. Daylight Harvesting A system of controlling the direction and the quantity of light both natural and artificial within a given space. This implies: Control of fenestration in terms of size..., transmission and direction. Control of reflected light within a space. Control of electric light in terms of delivery and amount Daylight harvesting systems are typically designed to maintain a minimum recommended light level. This light level...

  3. CALIFORNIA ENERGY Daylighting In Schools

    E-Print Network [OSTI]

    CALIFORNIA ENERGY COMMISSION Daylighting In Schools: Reanalysis Report TECHNICALREPORT October 2003 Departments, JimVan Dame of My-Lite Daylighting Systems and Products, Doug Gehring of Celotex, Ivan Johnson

  4. DAYLIGHTING DIRECTORY 1/1980

    E-Print Network [OSTI]

    ,

    2012-01-01T23:59:59.000Z

    Lighting Design and ~ylight:ing and Passive Solar Buildin. ~Design and Applications, Febo and Kiarch, 1979. "Daylighting and Passive SolarPassive Solar Conference, pp. 271 - 281, January 1979. TERNOEY, STEVEN "Daylighting Design

  5. Neural daylight control system

    E-Print Network [OSTI]

    Grif, Horatiu Stefan

    2010-01-01T23:59:59.000Z

    The paper describes the design, the implementation of a neural controller used in an automatic daylight control system. The automatic lighting control system (ALCS) attempt to maintain constant the illuminance at the desired level on working plane even if the daylight contribution is variable. Therefore, the daylight will represent the perturbation signal for the ALCS. The mathematical model of process is unknown. The applied structure of control need the inverse model of process. For this purpose it was used other artificial neural network (ANN) which identify the inverse model of process in an on-line manner. In fact, this ANN identify the inverse model of process + the perturbation signal. In this way the learning signal for neural controller has a better accuracy for the present application.

  6. Robustness of circadian clocks to daylight fluctuations: hints from the picoeucaryote

    E-Print Network [OSTI]

    1 Robustness of circadian clocks to daylight fluctuations: hints from the picoeucaryote a strategy to minimize the impact of fluctuations in daylight intensity on the core circadian oscillator daylight fluctuations by localizing coupling to the light during specific time intervals. In our model

  7. Daylighting, dimming, and the electricity crisis in California

    SciTech Connect (OSTI)

    Rubinstein, Francis; Neils, Danielle; Colak, Nesrin

    2001-09-17T23:59:59.000Z

    Dimming controls for electric lighting have been one of the mainstays of the effort to use daylighting to reduce annual lighting energy consumption. The coincidence of daylighting with electric utility peak demand makes daylighting controls an effective strategy for reducing commercial building peak electric loads. During times of energy shortage, there is a greatly increased need to reduce electricity use during peak periods, both to ease the burden on electricity providers and to control the operating costs of buildings. The paper presents a typical commercial building electric demand profile during summer, and shows how daylighting-linked lighting controls and load shedding techniques can reduce lighting at precisely those times when electricity is most expensive. We look at the importance of dimming for increasing the reliability of the electricity grid in California and other states, as well as examine the potential cost-effectiveness of widespread use of daylighting to save energy and reduce monthly electricity bills.

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    quantitative performance indicators of daylight sufficiency?assumptions of existing daylighting performance indicators.existing daylight performance indicators overestimated the

  9. Abstract A Hierarchical Algorithm for Radiosity Daylighting

    E-Print Network [OSTI]

    Gonzalo Besuievsky; Ignacio Martin

    A new daylight simulation method for radiosity environments is presented. Daylight illumination is transported in a first step where sun and sky are represented as a set of directional sources. Light is transported using parallel projections of these sources. The scene mesh is adaptively subdivided using energy and visibility criteria obtained from a extended scan-line algorithm that computes a layered depth image for each projection. In a second step, diffuse intereflection is computed through a hierarchical Monte Carlo radiosity algorithm. The method is feasible for it extension for environments containing specular surfaces. Relative short time view-independent global illumination results can be obtained with the proposed method, which make it suitable for daylight building design and analysis applications for both indoors and outdoors environments. 1

  10. Daylighting Calculation in DOE-2

    E-Print Network [OSTI]

    Winkelmann, F.C

    2013-01-01T23:59:59.000Z

    46 3.2.2 Luminous Efficacy of Solar Radiation . . . . . . .The Availability of Solar Radiation. and Daylight",incidence TSOLNM for solar radiation. TSOLDF =

  11. Advanced fenestration systems for improved daylight performance

    E-Print Network [OSTI]

    Selkowitz, S.; Lee, E.S.

    1998-01-01T23:59:59.000Z

    Systems for Improved Daylight Performance S. Selkowitz, E.S.Systems for Improved Daylight Performance S. Selkowitz, E.S.Introduction The use of daylight to replace or supplement

  12. Daylighting Islais Creek : a feasibility study

    E-Print Network [OSTI]

    Jencks, Rosey; Leonardson, Rebecca

    2004-01-01T23:59:59.000Z

    for daylighting the creek and other green infrastructure.Daylighting Islais Creek for stormwater conveyance wouldGlen Park Cayuga Islais Creek Runoff Elev. Slope coeff.

  13. Daylighting | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility Database DataDatatechnic InternationalMontana:Heights,Daylighting

  14. PDX\\APP J_EDT ASSESSMENT LOWER WILL.DOC 1 Draft EDT Assessment of Aquatic Habitat in the

    E-Print Network [OSTI]

    of the Sellwood Bridge. The segment has considerable open space, as well as commercial and industrial land uses condition between these two "bookends" allowed us to define good and bad conditions and to analyze how of data and information used to rate the condition of the environmental attributes EDT uses to evaluate

  15. The Lightswitch Wizard -- reliable daylight simulations

    E-Print Network [OSTI]

    For Initial Design; C. F. Morrison; M. Dubrous; C. F. Reinhart ?; M. Morrison; F. Dubrous

    A web-based, non-expert daylighting analysis tool has been developed to support daylighting-related design decisions in peripheral private offices during an early design stage (http://buildwiz.com). The tool offers a comparative, reliable, and fast analysis of the annual amount of daylight in the offices (daylight factor and daylight autonomy) and the lighting energy performance of automated lighting controls (occupancy sensors, photocells) compared to standard on/off switches. Blinds are either manually or automatically controlled.

  16. DAYLIGHTING METRICS: IS THERE A RELATION BETWEEN USEFUL DAYLIGHT ILLUMINANCE AND DAYLIGHT GLARE PROBABILITY?

    E-Print Network [OSTI]

    J. Mardaljevic; M. Andersen; N. Roy; J. Christoffersen

    The establishment of climate-based daylight modelling within research and practice has led to a fundamental reassessment of both the basis and purpose of daylight metrics. Whilst there is no consensus yet on the precise nature of the metric(s) that should replace the daylight factor, it is generally agreed that these should be founded on climate-based daylight modelling (CBDM). In this paper we examine the relation between the predicted annual occurrence of glare and one of the candidate CBDM metrics that has been proposed, called useful daylight illuminance (UDI). The purpose is to determine if one or more of the UDI metrics (predicted for the horizontal workplane) could serve as a proxy for the probability of daylight glare (i.e. a measure of vertical illuminance received at the eye). For glare we use the simplified daylight glare probability model. The setting is a residential building which we use as a ‘virtual laboratory ’ in two design configurations, each evaluated under all 32 combinations of 8 European climates and 4 building orientations.

  17. Integrating automated shading and smart glazings with daylight controls

    E-Print Network [OSTI]

    Selkowitz, Stephen; Lee, Eleanor

    2004-01-01T23:59:59.000Z

    Effect of Venetian Blinds on Daylight Photoelectric Controland Smart Glazings with Daylight Controls Stephen Selkowitzwith the outdoors and daylight to enhance the quality of the

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

    E-Print Network [OSTI]

    Grobe, Lars

    2010-01-01T23:59:59.000Z

    A and Mardaljevic J, Useful daylight illuminance: a newparadigm for assessing daylight in buildings, LightingJ and Rogers Z, Dynamic daylight performance metrics for

  19. CALCULATING INTERIOR DAYLIGHT ILLUMINATION WITH A PROGRAMMABLE HAND CALCULATOR

    E-Print Network [OSTI]

    Bryan, Harvey J.

    2013-01-01T23:59:59.000Z

    Committee E-3.2, "Daylight: International RecommendationsCalculation of Natural Daylight," CIE PUBLICATION No. 16,Committee E-3.2, "Natural Daylight: Official Recommenda-

  20. CALCULATING INTERIOR DAYLIGHT ILLUMINATION WITH A PROGRAMMABLE HAND CALCULATOR

    E-Print Network [OSTI]

    Bryan, Harvey J.

    2013-01-01T23:59:59.000Z

    Committee E-3.2, "Daylight: International Recommendationsthe Calculation of Natural Daylight, 11 CIE PUBLICATION No.Committee E-3.2 1 "Natural Daylight: Official Recommenda-

  1. UNIVERSITY OF CALIFORNIA, SAN DIEGO Acoustic Daylight: passive acoustic imaging

    E-Print Network [OSTI]

    Buckingham, Michael

    UNIVERSITY OF CALIFORNIA, SAN DIEGO Acoustic Daylight: passive acoustic imaging using ambient noise ............................................................................................... xviii SECTION 1: INTRODUCTION Chapter 1: Acoustic Daylight......................................................................... 1 1.2 Acoustic Daylight

  2. Daylighting Calculation in DOE-2

    E-Print Network [OSTI]

    Winkelmann, F.C

    2013-01-01T23:59:59.000Z

    the sequence: d. space reference point exterior wall windowsystem (BCS). space system to Begin Exterior Wall Loop (1)least one daylit space. 3.2.1 Exterior Daylight Availability

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    of Task 21 / Annex 29, Daylight in Buildings. October, 1997.Energy performance of daylight-linked automatic lightingField Commissioning of a daylight-dimming lighting system.

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2011-01-01T23:59:59.000Z

    of Task 21 / Annex 29, Daylight in Buildings. October, 1997.Energy performance of daylight-linked automatic lightingBegemann, G. et al. (1997). Daylight, artificial light and

  5. Intelligent Daylight Panel Control System based on Fuzzy Control for Green Buildings

    E-Print Network [OSTI]

    T. C. Kuo; J. S. Lin; Y. Takeuchi; Y. J. Huang

    Abstract—This paper proposes an intelligent daylight panel control system based on fuzzy control theory for green buildings. The goal of this research is to automatically modulate sunlight efficiently and to enhance the quality of interior illuminations, thus reducing the need for artificial lighting and conserving energy. Daylight panels are typically installed on the outside of windows. By applying the proposed fuzzy controller, the reflection angle of daylight panels could be adjusted and optimized so that interior illuminative quality is improved and energy-saving is achieved at the same time. Index Terms—daylight panel, intelligent control, fuzzy control. I.

  6. BIM-Centric Daylight Profiler for Simulation (BDP4SIM): A Methodology for Automated Product Model Decomposition and Recomposition for Climate-Based Daylighting Simulation

    E-Print Network [OSTI]

    Benjamin Welle; Zack Rogers; Martin Fischer; Benjamin Welle A; Zack Rogers B; Martin Fischer

    2012-01-01T23:59:59.000Z

    Flexible problem formulation is required for product model-based thermal analysis using multidisciplinary design optimization (MDO) environments for cost-effectiveness, accuracy, and scalability in the Architecture, Engineering, and Construction (AEC) industry. The integration of daylighting simulation into an MDO process, however, presents several implementation challenges. In current practice, the process of an architect, engineer, or daylighting consultant to determine how to analyze a given building design for daylighting performance is frequently subjective, time-consuming, and inconsistent. Furthermore, long simulation time requirements for daylighting significantly hinder the realization of many benefits from MDO. The determination of which spaces in a building are sufficiently different to warrant an independent daylighting analysis is based primarily on building

  7. New opportunities for productivity improvement in VAX/VMS V4 EDT editor

    SciTech Connect (OSTI)

    Nieland, M.E.; Haas, W.J. Jr.

    1986-09-01T23:59:59.000Z

    Some of the new features of the EDT editor distributed with VAX/VMS Version 4 are discussed. Fully annotated examples of new software modules that employ new information concerning the EDT utility routines to provide convenient support for user generation of subprocesses from within the EDT context are given. It is shown that such modules can be used to provide convenient user access to the VAX/VMS HELP facility and to a variety of HELP libraries while using EDT. Examples of the HELP libraries that can be conveniently accessed by using key sequences defined in an EDT startup command file given in this paper include DCL, FORTRAN, and other language HELP libraries, and even locally generated HELP libraries, such as a help library concerning the definitions of key sequences and macros by an EDT startup command file. 4 refs.

  8. DAYLIGHTING METRICS FOR RESIDENTIAL BUILDINGS

    E-Print Network [OSTI]

    unknown authors

    It is now widely accepted that the standard method for daylighting evaluation- the daylight factor- is due for replacement with metrics founded on absolute values for luminous quantities predicted over the course of a full year using sun and sky conditions derived from standardised climate files. The move to more realistic measures of daylighting introduces significant levels of additional complexity in both the simulation of the luminous quantities and the reduction of the simulation data to readily intelligible metrics. The simulation component, at least for buildings with standard glazing materials, is reasonably well understood. There is no consensus however on the composition of the metrics, and their formulation is an ongoing area of active research. Additionally, non-domestic and residential buildings present very different evaluation scenarios and it is not yet clear if a single metric would be applicable to both. This study uses a domestic dwelling as the setting to investigate and explore the applicability of daylighting metrics for residential buildings. In addition to daylighting provision for task and disclosing the potential for reducing electric lighting usage, we also investigate the formulation of metrics for non-visual effects such as entrainment of the circadian system.

  9. Date: Thu, 19 Aug 93 09:41:25 EDT From: anich@cordmc.dnet.etn ...

    E-Print Network [OSTI]

    Date: Thu, 19 Aug 93 09:41:25 EDT From: anich@cordmc.dnet.etn.com (Steve Anich, Eaton Corporation, Milwaukee) From _Cooking Without Fat_ by George ...

  10. 4.430 Daylighting, Fall 2006

    E-Print Network [OSTI]

    Andersen, Marilyne

    This class provides the tools necessary for an efficient integration of daylighting issues in the overall design of a building. The fundamentals of daylighting and electric lighting are introduced and their relevance to ...

  11. CALIFORNIA ENERGY Summary Of Daylighting In Schools

    E-Print Network [OSTI]

    CALIFORNIA ENERGY COMMISSION Summary Of Daylighting In Schools: Reanalysis Report ReanalysisConocha of Federated Departments, Jim Van Dame of My-Lite Daylighting Systems and Products, Doug Gehring of Celotex

  12. Daylighting Application and Effectiveness in Industrial Facilities 

    E-Print Network [OSTI]

    McCowan, B.; Birleanu, D.

    2005-01-01T23:59:59.000Z

    artificial lighting became available, most older industrial buildings had their daylighting features boarded over. With modern glazing systems and sophisticated designs that minimize glare issues, daylighting for industrial buildings is making a strong...

  13. Daylight metrics and energy savings J. Mardaljevic

    E-Print Network [OSTI]

    LBNL-4585E Daylight metrics and energy savings Authors: J. Mardaljevic Institute of Energy 2009; 0: 1­23 ! Daylight metrics and energy savings J. Mardaljevic a , L. Heschong b , E.S. Lee c comfort performance. Current metrics do not account for the temporal and spatial aspects of daylight, nor

  14. I Color recognition models of daylight illumi-

    E-Print Network [OSTI]

    Draper, Bruce A.

    I Color recognition models of daylight illumi- nation and hybrid reflectance, and predicts of the color of ob- jects with respect to existing models of daylight [12] and surface reflectance [17, 14, 211 a surface reflectance model for hybrid surfaces and a context-based model of daylight illumination

  15. A SIMPLIFIED PROCEDURE FOR CALCULATING THE EFFECTS OF DAYLIGHT FROM CLEAR SKIES

    E-Print Network [OSTI]

    Bryan, Harvey J.

    2012-01-01T23:59:59.000Z

    J. , "The Calculation of Daylight Factor for Clear Skyand Predetermination of Daylight Illumination," ILLUMINATINGA MEASURING DIAGRAM FOR DAYLIGHT ILLUMINATION, Batsford,

  16. #LabChat Q&A: Biofuels of the Future, Sept. 26 at 2 pm EDT |...

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

    LabChat Q&A: Biofuels of the Future, Sept. 26 at 2 pm EDT LabChat Q&A: Biofuels of the Future, Sept. 26 at 2 pm EDT September 25, 2012 - 1:23pm Addthis Great Lakes Bioenergy...

  17. Investigating Daylight Quality In Malaysian Government Office Buildings Through Daylight Factor

    E-Print Network [OSTI]

    Surface Luminance; Mohd Zin K; Mohd Sabere Sulaiman; Yong Razidah Rashid; Dilshan Remaz Ossen; Aminatuzuhariah M; Lim Yaik Wah; Mansour Nikpour

    Abstract—In recent years, there has been an increasing interest in using daylight to save energy in buildings. In tropical regions, daylighting is always an energy saver. On the other hand, daylight provides visual comfort. According to standards, it shows that many criteria should be taken into consideration in order to have daylight utilization and visual comfort. The current standard in Malaysia, MS 1525 does not provide sufficient guideline. Hence, more research is needed on daylight performance. If architects do not consider daylight design, it not only causes inconvenience in working spaces but also causes more energy consumption as well as environmental pollution. This research had surveyed daylight performance in 5 selected office buildings from different area of Malaysian through experimental method. Several parameters of daylight quality such as daylight factor, surface luminance and surface luminance ratio were measured in different rooms in each building. The result of this research demonstrated that most of the buildings were not designed for daylight utilization. Therefore, it is very important that architects follow the daylight design recommendation to reduce consumption of electric power for artificial lighting while the sufficient quality of daylight is available. Keywords—Daylight factor, Field measurement, Daylighting quality, Tropical

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

    E-Print Network [OSTI]

    Atre, Umesh Vinayak

    2005-08-29T23:59:59.000Z

    EFFECT OF DAYLIGHTING ON ENERGY CONSUMPTION AND DAYLIGHT QUALITY IN AN EXISTING ELEMENTARY SCHOOL A Thesis by UMESH VINAYAK ATRE Submitted to the Office of Graduate Studies of Texas A&M University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE May 2005 Major Subject: Architecture EFFECT OF DAYLIGHTING ON ENERGY CONSUMPTION AND DAYLIGHT QUALITY IN AN EXISTING ELEMENTARY SCHOOL A...

  19. Daylighting controls; Orphan of HVAC design

    SciTech Connect (OSTI)

    Rundquist, R.A. (R.A. Rundquist Associates Inc., Northampton, MA (US))

    1991-11-01T23:59:59.000Z

    This paper reports that in the array of strategies employed for energy-efficient design and retrofitting in commercial buildings, the use of daylighting controls is often overlooked or omitted. Thus, daylighting controls are a worthy but neglected orphan of the design process, stranded between the lighting designer, architect and engineer. Most daylighting analysis ignores HVAC effects, despite obvious interactions between windows, heat-from-lights, and thermal loads.

  20. Energy 101: Daylighting | Department of Energy

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

    Highly efficient, strategically placed windows maximize the use of natural daylight in a building, lowering the need for artificial lighting without causing heating or...

  1. Simulating the Daylight Performance of Complex Fenestration Systems Using

    E-Print Network [OSTI]

    LBNL-4414E Simulating the Daylight Performance of Complex Fenestration Systems Using Bidirectional, January 21, 2011. 1 Simulating the Daylight Performance of Complex Fenestration Systems Using (BSDFs) to model the daylighting performance of complex fenestration systems (CFS), enabling greater

  2. Integrated Daylight Harvesting and Occupancy Detection Using Digital Imaging

    E-Print Network [OSTI]

    Salvaggio, Carl

    Integrated Daylight Harvesting and Occupancy Detection Using Digital Imaging Abhijit Sarkar dynamic range CMOS video camera to integrate daylight harvesting and occupancy sensing functionalities by these sensors. The prototype involves three algorithms, daylight estimation, occupancy detection and lighting

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

    E-Print Network [OSTI]

    International Symposium on Daylighting Buildings (IEA SHC TASK 31) Integrating Automated Shading and Smart Glazings with Daylight Controls Stephen Selkowitz Eleanor Lee Lawrence Berkeley National Laboratory Keywords: daylighting, controls, smart glazing, shading, field testing, IEA31 1. INTRODUCTION Most

  4. Times are in Mountain Daylight Savings Time

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergyIssuesEnergy SolarRadioactive LiquidSavingsAugustPhase 2ATF Development

  5. Times are in Mountain Daylight Savings Time

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergyIssuesEnergy SolarRadioactive LiquidSavingsAugustPhase 2ATF

  6. ARM - Employment Opportunities Article

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

    and Global Climate Modeling Program Manager Earth System Modeling Program Manager Applications will be accepted until Monday, May 10, 2010, 11 p.m. Eastern Daylight Time (EDT)...

  7. Experience of light : the use of an inverse method and a genetic algorithm in daylight design

    E-Print Network [OSTI]

    Chutarat, Acharawan

    2001-01-01T23:59:59.000Z

    Integration of daylight availability in time and architectural space is a critical element in achieving optimal comfort and productivity, as well as in minimizing energy consumption. In recent years, there has been an ...

  8. June 1998Program Description Windows and Daylighting Group

    E-Print Network [OSTI]

    June 1998Program Description THERM 2.0 Windows and Daylighting Group Building Technologies, and Dariush Arasteh Windows and Daylighting Group Building Technologies Department Environmental Energy

  9. A Practical Analytic Model for Daylight Category: research

    E-Print Network [OSTI]

    Shirley, Peter

    A Practical Analytic Model for Daylight Category: research Abstract Sunlight and skylight that approximates full spectrum daylight for various atmospheric con­ ditions. These conditions are parameterized

  10. A Practical Analytic Model for Daylight Category: research

    E-Print Network [OSTI]

    Shirley, Peter

    A Practical Analytic Model for Daylight Category: research Abstract Sunlight and skylight that approximates full spectrum daylight for various atmospheric con- ditions. These conditions are parameterized

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

    E-Print Network [OSTI]

    Grobe, Lars

    2010-01-01T23:59:59.000Z

    Singapore’s Zero-Energy Building’s daylight monitoringSingapore’s Zero-Energy Building's daylight monitoringchambers in BCAA's Zero Energy Building in Singapore. These

  12. Daylight metrics and energy savings

    SciTech Connect (OSTI)

    Mardaljevic, John; Heschong, Lisa; Lee, Eleanor

    2009-12-31T23:59:59.000Z

    The drive towards sustainable, low-energy buildings has increased the need for simple, yet accurate methods to evaluate whether a daylit building meets minimum standards for energy and human comfort performance. Current metrics do not account for the temporal and spatial aspects of daylight, nor of occupants comfort or interventions. This paper reviews the historical basis of current compliance methods for achieving daylit buildings, proposes a technical basis for development of better metrics, and provides two case study examples to stimulate dialogue on how metrics can be applied in a practical, real-world context.

  13. 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]

    Smith, Brooke Ray

    2007-01-01T23:59:59.000Z

    and Leonardson 2004). Why Daylight? In San Francisco, creekof San Francisco to daylight historical urban creeks withincity governments to daylight urban creeks, with successful

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2011-01-01T23:59:59.000Z

    quantitative performance indicators of daylight sufficiency?set of daylighting performance indicators for examination inassumptions of performance indicators under real work

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    quantitative performance indicators of daylight sufficiency?set of daylighting performance indicators for examination inassumptions of performance indicators under real work

  16. Hiding patterns with daylight fluorescent inks

    E-Print Network [OSTI]

    Romain Rossier; Roger D. Hersch; School Of Computer; Communication Sciences; Ecole Polytechnique; Fédérale Lausanne

    We propose a method for hiding patterns within printed images by making use of classical and of two daylight fluorescent magenta and yellow inks. Under the D65 illuminant we establish in the CIELAB space the gamut of a classical cmyk printer and the gamut of the same printer using a combination of classical inks with daylight fluorescent inks. These gamuts show that a significant part of the classical ink gamut can be reproduced by combining classical inks with daylight fluorescent inks. By printing parts of images with a combination of classical and daylight fluorescent inks instead of using classical inks only, we can hide security patterns within printed images. Under normal daylight, we do not see any difference between the parts printed with classical inks only and the parts printed with daylight fluorescent inks and classical inks. By changing the illumination, e.g. by viewing the printed image under a tungsten lamp or under a UV lamp, the daylight fluorescent inks change their colors and reveal the security pattern formed by combinations of classical inks and of daylight fluorescent inks.

  17. SBi 2006:08 Assessment of daylight quality

    E-Print Network [OSTI]

    SBi 2006:08 Assessment of daylight quality in simple rooms Impact of three window configurations on daylight conditions, Phase 2 #12;#12;SBi 2006:08 Danish Building Research Institute 2006 Assessment of daylight quality in simple rooms Impact of three window configurations on daylight conditions, Phase 2

  18. Monitored Energy Performance of Electrochromic Windows Controlled for Daylight and Visual Comfort

    E-Print Network [OSTI]

    Lee, Eleanor S.; DiBartolomeo, Dennis L.; Klems, Joseph; Yazdanian, Mehry; Selkowitz, Stephen E.

    2005-01-01T23:59:59.000Z

    Windows Controlled for Daylight and Visual Comfort Eleanorof means to bring in daylight while minimizing window glare.was controlled to admit daylight while the lower zone was

  19. Evaluation of Climate-Based Daylight Performance in Tropical Office Buildings- A Case Study

    E-Print Network [OSTI]

    Szu-Cheng, CHIEN; King Jet, TSENG

    2013-01-01T23:59:59.000Z

    and Z. Rogers, Dynamic Daylight Performance Metrics forof interior design on the daylight availability in open plan2002. [14] Z. Rogers, Daylight metric development using

  20. SIMULATION-ASSISTED DAYLIGHT PERFORMANCE ANALYSISIN A HIGH-RISE OFFICE BUILDING IN SINGAPORE

    E-Print Network [OSTI]

    CHIEN, Szu Cheng; TSENG, King Jet

    2013-01-01T23:59:59.000Z

    Flodberg, K. (2013). “Daylight utilisation in perimeterJ. , (2005a). “Useful Daylight Illuminance: A NewParadigm to Access Daylight in Buildings”. Lighting

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

    E-Print Network [OSTI]

    Ward, Gregory

    2011-01-01T23:59:59.000Z

    761-81. Tregenza PR. 1983. Daylight coefficients. Lighting773. Reinhart CF. 2001. Daylight availability and manualA visualization of an incident daylight matrix (cumulative

  2. A PROCEDURE FOR CALCULATING INTERIOR DAYLIGHT ILLUMINATION WITH A PROGRAMMABLE HAND CALCULATOR

    E-Print Network [OSTI]

    Bryan, H.J.

    2010-01-01T23:59:59.000Z

    FOR CALCULATING INTERIOR DAYLIGHT ILLUMINATION WITH ACommittee E-3.2, "Daylight: International RecommendationsCalcula- tion of Natural Daylight," CIE PUBLICATION No. 16,

  3. Performance of Integrated Systems of Automated Roller Shade Systems and Daylight Responsive Dimming Systems

    E-Print Network [OSTI]

    Park, Byoung-Chul

    2011-01-01T23:59:59.000Z

    Roller Shade Systems and Daylight Responsive Dimming SystemsRoller Shade Systems and Daylight Responsive Dimming SystemsBerkeley, CA 94720 Abstract Daylight responsive dimming

  4. Performance-based assessment of daylight on tropical buildings- a case Study

    E-Print Network [OSTI]

    Szu Cheng, CHIEN

    2013-01-01T23:59:59.000Z

    81% 81% 95% 96% 74% 68% Daylight autonomy max (DAmax) >5%32% 28% 11% 9% 11% 6% Useful daylight illuminance (UDI) Daylight Performance Metrics for

  5. 4.492 Daylighting, Fall 2004

    E-Print Network [OSTI]

    Andersen, Marilyne

    The course focuses on the use and optimization of daylight in buildings and on its complementarity to artificial (electric) lighting, to aim at reducing the building's environmental impact while improving the visual comfort ...

  6. Daylighting Prediction Software: Comparative Analysis and Application

    E-Print Network [OSTI]

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

    2004-01-01T23:59:59.000Z

    in selecting a software program are presented. “Radiance”, a reverse ray tracing method software package, was chosen for use in the simulations. An existing school was modeled with the Radiance software and predictions of daylighting contributions were compared...

  7. Daylighting Application and Effectiveness in Industrial Facilities

    E-Print Network [OSTI]

    McCowan, B.; Birleanu, D.

    2005-01-01T23:59:59.000Z

    during the industrial revolution, architects utilized various daylighting strategies such as window walls, skylighting, monitors, etc. However, glazing technologies were primitive compared with our modern choices, When more efficient and effective...

  8. Utilizing Daylighting Controls in a Manufacturing Facility

    E-Print Network [OSTI]

    Shrestha, S. S.; Maxwell, G. M.

    Utilizing Daylighting Controls in a Manufacturing Facility Som S. Shrestha Dr. Gregory M. Maxwell PhD Candidate Associate Professor som@iastate.edu gmaxwell@iastate.edu Iowa State University Ames, IA ABSTRACT Opportunities exist... to reduce artificial lighting in manufacturing facilities which have skylights and/or fenestration that provide sufficient quantities of daylight to the work space. Using photometric sensors to measure the illuminance in the space, artificial lights can...

  9. Focus group discussions of daylighting practices

    SciTech Connect (OSTI)

    Roberson, B.F.; Harkreader, S.A.

    1988-11-01T23:59:59.000Z

    This research was sponsored by the US Department of Energy (DOE) Office of Buildings and Community systems and conducted by Pacific Northwest Laboratory (PNL) as part of an ongoing effort to enhance the commercial use of federally developed technologies. One such technology is the use of daylighting practices in the design of nonresidential buildings. This document is a report of the findings from meetings of focus groups conducted to gain insight into building designers' perceptions and attitudes about daylighting systems.

  10. SLAVE: a package of enhancements for the VAX/VMS EDT text editor

    SciTech Connect (OSTI)

    Blanford, M.L.; Scott, H.L.

    1982-05-01T23:59:59.000Z

    As the basic tool for creating and modifying text and code input files at Sandia, the EDT Editor is perhaps the most widely used piece of software on the development VAX computers. Several enhancements for the editor are presented here, along with instructions for and examples of their use. SLAVE includes a command procedure to initialize and run the editor, an improved string search and substitution facility, keystrokes to simplify multi-buffer editing, several miscellaneous functions, and a setup mode to customize the editor to particular applications. The regular EDT help utility has been augmented to include information on these new features.

  11. Technology reviews: Daylighting optical systems

    SciTech Connect (OSTI)

    Schuman, J.; Rubinstein, F.; Papamichael, K.; Beltran, L.; Lee, E.S.; Selkowitz, S.

    1992-09-01T23:59:59.000Z

    We present a representative review of existing, emerging, and future technology options in each of five hardware and systems areas in envelope and lighting technologies: lighting systems, glazing systems, shading systems, daylighting optical systems, and dynamic curtain wall systems. The term technology is used here to describe any design choice for energy efficiency, ranging from individual components to more complex systems to general design strategies. The purpose of this task is to characterize the state of the art in envelope and lighting technologies in order to identify those with promise for advanced integrated systems, with an emphasis on California commercial buildings. For each technology category, the following activities have been attempted to the extent possible: Identify key performance characteristics and criteria for each technology. Determine the performance range of available technologies. Identify the most promising technologies and promising trends in technology advances. Examine market forces and market trends.Develop a continuously growing in-house database to be used throughout the project. A variety of information sources have been used in these technology characterizations, including miscellaneous periodicals, manufacturer catalogs and cut sheets, other research documents, and data from previous computer simulations. We include these different sources in order to best show the type and variety of data available, however publication here does not imply our guarantee of these data. Within each category, several broad classes are identified, and within each class we examine the generic individual technologies that fall into that class.

  12. FREE-SPACE QUANTUM CRYPTOGRAPHY IN DAYLIGHT

    SciTech Connect (OSTI)

    Hughes, R.J.; Buttler, W.T. [and others

    2000-01-01T23:59:59.000Z

    Quantum cryptography is an emerging technology in which two parties may simultaneously generate shared, secret cryptographic key material using the transmission of quantum states of light. The security of these transmissions is based on the inviolability of the laws of quantum mechanics and information-theoretically secure post-processing methods. An adversary can neither successfully tap the quantum transmissions, nor evade detection, owing to Heisenberg's uncertainty principle. In this paper we describe the theory of quantum cryptography, and the most recent results from our experimental free-space system with which we have demonstrated for the first time the feasibility of quantum key generation over a point-to-point outdoor atmospheric path in daylight. We achieved a transmission distance of 0.5 km, which was limited only by the length of the test range. Our results provide strong evidence that cryptographic key material could be generated on demand between a ground station and a satellite (or between two satellites), allowing a satellite to be securely re-keyed on orbit. We present a feasibility analysis of surface-to-satellite quantum key generation.

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

    E-Print Network [OSTI]

    Grobe, Lars

    2010-01-01T23:59:59.000Z

    DGP Established performance indicators are illuminanceled to new performance indicators. The Useful Daylightsimulation. The performance indicator used was the Daylight

  14. Building Information Modeling (BIM)-Based Daylighting Simulation and Analysis 

    E-Print Network [OSTI]

    Kota, S.; Haberl, J.S.; Clayton, M.; Yan, W.

    2014-01-01T23:59:59.000Z

    will be converted into daylighting models to run on the daylighting simulation engines. Once the architect defines the architectural model in CAD, a simulation expert creates the simulation input file to perform daylighting analysis. Each tool has its own way... the Radiance input file is created, different Radiance utilities are called using MS Windows BATCH scripting for doing a daylighting analysis [15]. In addition to AutoCAD, Radiance also has many utility programs that help in converting different geometry...

  15. Building Information Modeling (BIM)-Based Daylighting Simulation and Analysis

    E-Print Network [OSTI]

    Kota, S.; Haberl, J.S.; Clayton, M.; Yan, W.

    tools Radiance and DAYSIM. Keywords: Building Information Modeling, BIM, Daylighting Simulation, Radiance, DAYSIM 1 Introduction Building performance analyses are important aspects of designing sustainable buildings. One of the performance analyses...) with daylighting analysis tools (Radiance and DAYSIM as sample simulation tools, which are widely used to study the daylighting performance of buildings). 2 Literature review 2.1 Daylighting simulation tools Over the years many analysis tools have been...

  16. A Spatially Augmented Reality Sketching Interface for Architectural Daylighting Design

    E-Print Network [OSTI]

    Varela, Carlos

    1 A Spatially Augmented Reality Sketching Interface for Architectural Daylighting Design Yu Sheng to architectural daylight modeling that allows designers to explore alternative designs and new technologies are then projected on the real model by four calibrated projectors to help users study the daylighting illumination

  17. 15 Acoustic Daylight Imaging in the Michael J. Buckingham

    E-Print Network [OSTI]

    Buckingham, Michael

    15 Acoustic Daylight Imaging in the Ocean Michael J. Buckingham Scripps Institution of Oceanography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418 15.4 Acoustic daylight images . . . . . . . . . . . . . . . . . . . . . . . . 420 15.5 Concluding. Sensors and Imaging ISBN 0­12­379771­3/$30.00 #12;416 15 Acoustic Daylight Imaging in the Ocean Acoustic

  18. Daylighting a Green High School Smart Schools Symposium 2013

    E-Print Network [OSTI]

    California at Davis, University of

    Daylighting a Green High School Smart Schools Symposium 2013 #12;AMERICAN CANYON HIGH SCHOOL NAPA CHPS Verified School in CA Daylighting a major focus of sustainable design strategy Began design and orientations First and second story Goals: best daylighting possible flexible lighting system simple and cost

  19. Loss of Daylight Vision in Retinal Degeneration: Are

    E-Print Network [OSTI]

    Tabin, Cliff

    Loss of Daylight Vision in Retinal Degeneration: Are Oxidative Stress and Metabolic Dysregulation, particularly in cones, the type of photoreceptors that mediate daylight and color vision. The evidence, providing our daylight vision, and have many of the same features and vulnerabilities as rod photoreceptors

  20. Combining daylighting, personal controls, and load shedding offers

    E-Print Network [OSTI]

    Combining daylighting, personal controls, and load shedding offers enormous potential for reducing lighting system to respond to available daylight and demand response control · Allows building occupants--Consider the improved cost-effectiveness of wireless dimming to promote daylighting controls and load- shedding

  1. Inferring Architectural Designs from Physical Sketches: Application to Daylighting Analysis

    E-Print Network [OSTI]

    Varela, Carlos

    Inferring Architectural Designs from Physical Sketches: Application to Daylighting Analysis Barbara and a closed, 3D triangle mesh representation is constructed. We apply the system to architectural daylighting, daylighting analy- sis, and image processing. ACM Classification Keywords H.5.1 Information Interfaces

  2. STATE OF CALIFORNIA AUTOMATIC DAYLIGHTING CONTROL ACCEPTANCE DOCUMENT

    E-Print Network [OSTI]

    STATE OF CALIFORNIA AUTOMATIC DAYLIGHTING CONTROL ACCEPTANCE DOCUMENT CEC-LTG-3A (Revised 07/10) CALIFORNIA ENERGY COMMISSION CERTIFICATE OF ACCEPTANCE LTG-3A Automatic Daylighting Control Acceptance fraction of rated light output. #12;STATE OF CALIFORNIA AUTOMATIC DAYLIGHTING CONTROL ACCEPTANCE DOCUMENT

  3. Singapore's Zero-Energy Building's Daylight Monitoring System

    E-Print Network [OSTI]

    LBNL-3708E Singapore's Zero-Energy Building's Daylight Monitoring System Author(s), L. Grobe; S thereof or The Regents of the University of California. #12;Singapore's Zero-Energy Building's daylight, 94720 California, USA 1. Abstract A setup to monitor the daylighting performance of different glazing

  4. Performance of Integrated Systems of Automated Roller Shade Systems and Daylight Responsive Dimming Systems

    SciTech Connect (OSTI)

    Park, Byoung-Chul; Choi, An-Seop; Jeong, Jae-Weon; Lee, Eleanor S.

    2010-07-08T23:59:59.000Z

    Daylight responsive dimming systems have been used in few buildings to date because they require improvements to improve reliability. The key underlying factor contributing to poor performance is the variability of the ratio of the photosensor signal to daylight workplane illuminance in accordance with sun position, sky condition, and fenestration condition. Therefore, this paper describes the integrated systems between automated roller shade systems and daylight responsive dimming systems with an improved closed-loop proportional control algorithm, and the relative performance of the integrated systems and single systems. The concept of the improved closed-loop proportional control algorithm for the integrated systems is to predict the varying correlation of photosensor signal to daylight workplane illuminance according to roller shade height and sky conditions for improvement of the system accuracy. In this study, the performance of the integrated systems with two improved closed-loop proportional control algorithms was compared with that of the current (modified) closed-loop proportional control algorithm. In the results, the average maintenance percentage and the average discrepancies of the target illuminance, as well as the average time under 90percent of target illuminance for the integrated systems significantly improved in comparison with the current closed-loop proportional control algorithm for daylight responsive dimming systems as a single system.

  5. COMPUTATIONAL SIMULATIONS FOR PREDICTING VERTICAL DAYLIGHT LEVELS IN ATRIUM BUILDINGS

    E-Print Network [OSTI]

    Jiangtao Du; Steve Sharples

    This paper investigates the impact of well geometry and surface reflectance on vertical daylight levels in atria with square forms under a CIE standard overcast sky. By reviewing some previous investigations and comparing with scale model measurements the vertical daylight factor calculated using Radiance are validated. More simulated vertical daylight factors for a very wide range of atrium geometries and reflectances are given. From the results the attenuation and distribution of the vertical daylight levels on the wall of a square atrium with different reflectances are displayed. Also, the comparisons between simulations and two analytical theories have been performed. Finally some conclusions for supporting daylight design in atria are presented.

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

    SciTech Connect (OSTI)

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

    2013-04-30T23:59:59.000Z

    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.

  7. Time Zone Information Compiled by John Case

    E-Print Network [OSTI]

    Case, John

    Deviations From Standard Time 1 The U.S. is on daylight saving time from the first Sunday in April @ 2am til the last Sunday in October @ 2am. Western Europe is on daylight saving time generally from the last Sunday designation. Additionally, it proclaims daylight saving time as does Europe. India's standard is at +05

  8. Assessing the Feasibility of Creek Daylighting in San Francisco, Part II: A Preliminary Analysis of Yosemite Creek

    E-Print Network [OSTI]

    Smith, Brooke Ray

    2007-01-01T23:59:59.000Z

    or purchased properties) to daylight the stream? Or is itrestoration (Smith 2007). Why Daylight in San Francisco? Inof San Francisco to daylight Yosemite Creek, how and where

  9. Invited paper for the 2001 IESNA National Conference Daylighting, Dimming, and the Electricity Crisis in California

    E-Print Network [OSTI]

    building peak electric loads. During times of energy shortage, there is a greatly increased need to reduce the operating costs of buildings. The paper presents a typical commercial building electric demand profile during summer, and shows how daylighting-linked lighting controls and load shedding techniques can reduce

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

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

    aims to boost retrofit projects and enable project teams to easily integrate energy, daylight, and airflow modeling into their design workflows. View the Presentation OpenStudio...

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

    E-Print Network [OSTI]

    Grobe, Lars

    2010-01-01T23:59:59.000Z

    Singapore’s Zero-Energy Building’s daylight monitoringof California. Singapore’s Zero-Energy Building's daylightchambers in BCAA's Zero Energy Building in Singapore. These

  12. Integrating automated shading and smart glazings with daylight controls

    E-Print Network [OSTI]

    Selkowitz, Stephen; Lee, Eleanor

    2004-01-01T23:59:59.000Z

    Automated Shading and Smart Glazings with Daylight Controlsdaylighting, controls, smart glazing, shading, fielddeveloping switchable “smart glazings” for over a decade and

  13. Acceleration of the matrix multiplication of Radiance three phase daylighting simulations

    E-Print Network [OSTI]

    LBNL-6461E Acceleration of the matrix multiplication of Radiance three phase daylighting multiplication of Radiance three phase daylighting simulations with parallel computing on heterogeneous hardware. Radiance, a lighting simulation program, has been used to conduct daylighting simulations for complex

  14. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    the time-stamp. The sky luminance distribution is eitherradiance and luminance) using sun and sky conditions thatlative luminance (or radiance) e?ect of (hourly) sky and the

  15. Natural Daylighting - An Energy Analysis

    E-Print Network [OSTI]

    Jarrell, R. P.

    1987-01-01T23:59:59.000Z

    tiers of elevators, which afforded met by the codes in both economic and energy savings. Because at the time of the design and con- Of the basic premise of the planning con- ~truction. The following table gives data cept, the two-tower scheme... temperature and ventilation control is provided by induction boxes. These boxes reclaim up to 50 percent of the heat from the lights by inducing warm air from the ceiling plenum to the exterior areas where heat is needed in winter. In the summer...

  16. Green Classroom: Daylighting-conscious Design for Kuwait Autism Center

    E-Print Network [OSTI]

    Abdullah Al-mohaisen; Omar Khattab

    Consideration to the natural elements, such as daylighting, at the earliest in the architectural design process is suggested by many as necessary for sustainable buildings. The implementation of a successful daylighting strategy in the design of buildings improves spatial quality and saves energy required, otherwise, for artificial lighting. Daylighting becomes a design mandate in the case of certain spaces; e.g. classrooms in educational buildings. Many researchers have indicated a correlation between the way classrooms are designed and students ' performance. This paper discusses a case study of the environmental design of Kuwait Autism Centre that adopted the provision of adequate daylighting in educational spaces as a major design focus. An extensive daylighting evaluation was conducted on all educational facilities of the proposed conceptual design of the centre. The recommendations from the evaluation were implemented in the design development stages. Earlier conceptual design drawings as well as the final designs are described. The paper summarises the daylighting design recommendations and explains the daylighting simulation process and analysis for decision making in design. Additionally it shows the annual energy savings as a result of the daylighting-conscious design of the classrooms.

  17. Applied Ecosystem Analysis - Background : EDT the Ecosystem Diagnosis and Treatment Method.

    SciTech Connect (OSTI)

    Mobrand, Lars E.

    1996-05-01T23:59:59.000Z

    This volume consists of eight separate reports. We present them as background to the Ecosystem Diagnosis and Treatment (EDT) methodology. They are a selection from publications, white papers, and presentations prepared over the past two years. Some of the papers are previously published, others are currently being prepared for publication. In the early to mid 1980`s the concern for failure of both natural and hatchery production of Columbia river salmon populations was widespread. The concept of supplementation was proposed as an alternative solution that would integrate artificial propagation with natural production. In response to the growing expectations placed upon the supplementation tool, a project called Regional Assessment of Supplementation Project (RASP) was initiated in 1990. The charge of RASP was to define supplementation and to develop guidelines for when, where and how it would be the appropriate solution to salmon enhancement in the Columbia basin. The RASP developed a definition of supplementation and a set of guidelines for planning salmon enhancement efforts which required consideration of all factors affecting salmon populations, including environmental, genetic, and ecological variables. The results of RASP led to a conclusion that salmon issues needed to be addressed in a manner that was consistent with an ecosystem approach. If the limitations and potentials of supplementation or any other management tool were to be fully understood it would have to be within the context of a broadly integrated approach - thus the Ecosystem Diagnosis and Treatment (EDT) method was born.

  18. Color and spectral analysis of daylight in southern Europe

    E-Print Network [OSTI]

    Javier Hernández-andrés; Javier Romero; Juan L. Nieves; Raymond L. Lee

    2001-01-01T23:59:59.000Z

    We have analyzed the colorimetric and spectral characteristics of 2600 daylight spectra (global spectral irradiances on a horizontal surface) measured for all sky states during a 2-year period at Granada, Spain. We describe in detail the chromaticity coordinates, correlated color temperatures (CCT), luminous efficacies, and relative UV and IR contents of Granada daylight. The chromaticity coordinates of Granada daylight lie far above the CIE locus at high CCTs (?9000 K), and a CCT of 5700 K best typifies this daylight. Our principalcomponents analysis shows that Granada daylight spectra can be adequately represented by using sixdimensional linear models in the visible, whereas seven-dimensional models are required if we include the UV or near-IR. Yet on average only three-dimensional models are needed to reconstruct spectra that are colorimetrically indistinguishable from the original spectra. © 2001 Optical Society of America OCIS codes: 010.1290, 330.1710, 330.1730. 1.

  19. Lighting system combining daylight concentrators and an artificial source

    DOE Patents [OSTI]

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

    1985-01-01T23:59:59.000Z

    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.

  20. Anomalous trichromats' judgments of surface color in natural scenes under different daylights

    E-Print Network [OSTI]

    Foster, David H.

    Anomalous trichromats' judgments of surface color in natural scenes under different daylights daylight illuminants were presented on a high-resolution color monitor to 7 deuteranomalous, 7 to the daylight locus rather than along the daylight locus ~Foster & Linnell, 1995; Amano et al., 2003

  1. Subject:Persons With Weapons at UW Madison Date:Wed, 19 Oct 2011 14:27:43 -0400 (EDT)

    E-Print Network [OSTI]

    Balser, Teri C.

    law goes into effect on November 1, 2011 all weapons will remain prohibited in UW Madison buildingsSubject:Persons With Weapons at UW Madison Date:Wed, 19 Oct 2011 14:27:43 -0400 (EDT) From. If you see a person who is not a police officer in uniform carrying a weapon in a UW Madison building

  2. FedBizOpps iManage Special Notice - Amendment 1 - Aug 2, 2012

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

    are allowed. NO TELEPHONE REQUESTS WILL BE ACCEPTED. ALL TIMES ARE STATED AS EASTERN DAYLIGHT TIME (EDT). PLEASE SEE DEPT OF ENERGY WEBSITE to see all Special Notice attachments:...

  3. Improving the daylighting conditions of existing buildings : the benefits and limitations of integrating anidolic daylighting systems using the American classroom as a model

    E-Print Network [OSTI]

    Kleindienst, Siân A. (Siân Alexandra)

    2006-01-01T23:59:59.000Z

    Awareness of the benefits of good daylighting has risen in recent years, and the designs of many new buildings take daylighting into consideration. However, the majority of our built environment is older than this recent ...

  4. A validation of the Radiance three-phase simulation method for modeling annual daylight performance of optically-complex fenestration systems

    E-Print Network [OSTI]

    McNeil, Andrew

    2013-01-01T23:59:59.000Z

    J. , 2011. Simulating the Daylight Performance of Complexof dynamic RADIANCE-based daylight simulations for a testS.E. , 1998. Energy and Daylight Performance of Angular

  5. Daylight variability and contrast-driven architectural effect

    E-Print Network [OSTI]

    Rockcastle, Siobhan Francois

    2011-01-01T23:59:59.000Z

    Natural light is a dynamic and ephemeral tool for expressing the quality of architectural space. As a compliment to more traditional avenues of daylighting research that assess performance in terms of quantitative illuminance ...

  6. An intuitive daylighting performance analysis and optimization approach

    E-Print Network [OSTI]

    Andersen, Marilyne

    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 ...

  7. Automated support for experimental approaches in daylighting performances assessment

    E-Print Network [OSTI]

    Ljubicic, Dean M

    2006-01-01T23:59:59.000Z

    The study of daylight and solar reflection has been a topic of increasing interest over the past two decades. A novel mechanical support has been constructed to help better understand this topic that consists of a five ...

  8. Interfacing BIM with Building Thermal and Daylighting Modeling

    E-Print Network [OSTI]

    Yan, Wei; Clayton, Mark; Haberl, Jeff; WoonSeong, Jeong; Bun Kim, Jong; Sandeep, Kota; Bermudez, Jose; Dixit, Manish

    INTERFACING BIM WITH BUILDING THERMAL AND DAYLIGHTING MODELING Wei Yan, Mark Clayton, Jeff Haberl, WoonSeong Jeong, Jong Bum Kim, Sandeep Kota, Jose Luis Bermudez Alcocer, and Manish Dixit Texas A&M University, College Station, USA... the BIM authoring tools’ Application Programming Interface (API) to translate BIM into Object-Oriented Physical Models (in Modelica) for building thermal simulation, and input files of ray-tracing software (Radiance) for daylighting simulation. Based...

  9. Advanced optical daylighting systems: light shelves and light pipes

    SciTech Connect (OSTI)

    Beltran, L.O.; Lee, E.S.; Selkowitz, S.E.

    1996-05-01T23:59:59.000Z

    We present two perimeter daylighting systems that passively redirect beam sunlight further from the window wall using special optical films, an optimized geometry, and a small glazing aperture. The objectives of these systems are (1) to increase daylight illuminance levels at 4.6-9.1 m (15-30 ft) from the window aperture with minimum solar heat gains and (2) to improve the uniformity of the daylighting luminance gradient across the room under variable solar conditions throughout the year. The designs were developed through a series of computer-assisted ray-tracing studies, laser visualization techniques, and photometric measurements and observations using physical scale models. Bi-directional illuminance measurements in combination with analytical routines were then used to simulate daylight performance for any solar position, and were incorporated into the DOE-2.1E building energy analysis computer program to evaluate energy savings. Results show increased daylight levels and an improved luminance gradient throughout the year compared to conventional daylighting systems.

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    Annex 29, Daylight in Buildings. October, 1997. Atif. M.R.case studies. Energy and Buildings 35 441-461. Attmann,George. 2010. Sustainable Buildings in Practice: What the

  11. Webinar: Supporting a Hawaii Hydrogen Economy

    Broader source: Energy.gov [DOE]

    The Energy Department will present a live webinar titled "Supporting a Hawaii Hydrogen Economy" on Tuesday, July 29, from 3:00 p.m. to 4:00 p.m. Eastern Daylight Time (EDT). The webinar will...

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

    E-Print Network [OSTI]

    Thanachareonkit, Anothai

    2014-01-01T23:59:59.000Z

    Jonsson JC. 2013. Daylight performance of a microstructuredH. Device for guiding daylight, US Patent 4,654,243 (JL, Selkowitz S. 2000. Daylight in buildings: A source book

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

    E-Print Network [OSTI]

    Lee, Eleanor S.; Selkowitz, Stephen E.

    2006-01-01T23:59:59.000Z

    W, respectively. Lighting power density at full power levelssavings and average lighting power density savings for astandard deviation Lighting power density at full power:

  14. Reserving and Scheduling Transmission over the Time Change -...

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

    the Time Change Posted Date: 10172014 Effective November 2, 2014 at 0200 Pacific Daylight Savings Time (Advanced Standard Time), BPA Transmission Services will set all clocks...

  15. Reserving and Scheduling Transmission over the Time Change -...

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

    Pacific Prevailing Time, BPA Transmission Services will set all clocks to Pacific Daylight Saving Time (Advanced Standard Time). For more information concerning how to submit...

  16. Reminder Reserving and Scheduling Transmission over the Time...

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

    the Time Change Posted Date: 10292014 Effective November 2, 2014 at 0200 Pacific Daylight Savings Time (Advanced Standard Time), BPA Transmission Services will set all clocks...

  17. Magnetospheric application of high-altitude long-duration balloon technology: Daylight auroral observations

    E-Print Network [OSTI]

    Lummerzheim, Dirk

    Magnetospheric application of high-altitude long-duration balloon technology: Daylight auroral; accepted 12 February 2007 Abstract Daylight auroral imaging is a proposed application of the NASA high

  18. Historical Survey of Daylighting Calculations Methods and Their Use in Energy Performance Simulations

    E-Print Network [OSTI]

    Kota, S.; Haberl, J. S.

    This paper traces the historical development of different daylighting calculation methods. Over the years there have been several developments in daylighting calculation methods. The last two decades have seen a number of new ideas and approaches...

  19. The Soralux Daylighting System : passive solar illumination for deep-plan building spaces

    E-Print Network [OSTI]

    Thuot, Kevin W. (Kevin William)

    2011-01-01T23:59:59.000Z

    Daylight is a valuable resource for both energy and human health. However, this resource is often underutilized in buildings due to the difficulty of controlling the changing qualities of daylight. Deep-plan building spaces ...

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

    E-Print Network [OSTI]

    Fernandes, Luis

    2014-01-01T23:59:59.000Z

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

  1. DELIGHT2 DAYLIGHTING ANALYSIS IN ENERGY PLUS: INTEGRATION AND PRELIMINARY USER RESULTS

    E-Print Network [OSTI]

    DELIGHT2 DAYLIGHTING ANALYSIS IN ENERGY PLUS: INTEGRATION AND PRELIMINARY USER RESULTS William L for daylight and electric lighting system analysis in buildings. DElight calculates interior illuminance levels from daylight, and the subsequent contribution required from electric lighting to meet a desired

  2. USING VIDEO FOR ANALYZING DAYLIGHT SIMULATION TOOLS Daniel C. Glaser1

    E-Print Network [OSTI]

    Varela, Carlos

    USING VIDEO FOR ANALYZING DAYLIGHT SIMULATION TOOLS Daniel C. Glaser1 , F. Whitney Smith2 , Barb socio-technical techniques can be employed to analyze video data of people using daylight simulation, a classic daylighting analysis tool; and in the second a lighting professional is asked to use a new data

  3. Calculating correlated color temperatures across the entire gamut of daylight and skylight chromaticities

    E-Print Network [OSTI]

    Lee Jr., Raymond L.

    Calculating correlated color temperatures across the entire gamut of daylight and skylight daylight and skylight spectra to test an equation that accurately maps CIE 1931 chromaticities x and y by daylight and skylight. © 1999 Optical Society of America OCIS codes: 010.1290, 330.1710, 330.1730. 1

  4. Development of a new model to predict indoor daylighting : integration in CODYRUN software and validation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Development of a new model to predict indoor daylighting : integration in CODYRUN software in the scientific literature for determining indoor daylighting values. They are classified in three categories. The originality of our paper relies on the coupling of several simplified models of indoor daylighting

  5. The following VS tools were compared: 2D OPENBABEL, DAYLIGHT2

    E-Print Network [OSTI]

    Ritchie, Dave

    The following VS tools were compared: 2D ­ OPENBABEL, DAYLIGHT2 , MACCS. BCI, MOLPRINT2D3 3D ­ ROCS Software Inc., Cepos Insilico Ltd., Chemical Computing Group, DAYLIGHT, Chemical Information Systems and Digital Chemistry for providing Academic Licences for ROCS, ParaSurf, MOE, DAYLIGHT, and BCI, respectively

  6. 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 of this emerging technology. Keywords: Building energy-efficiency; Electrochromic windows; Daylighting; Control switched across their dynamic range and could be fully integrated into a complete daylight, glare

  7. AUTOMATING THE SELECTION OF FENESTRATION SYSTEMS TO BEST MEET DAYLIGHTING PERFORMANCE GOALS

    E-Print Network [OSTI]

    AUTOMATING THE SELECTION OF FENESTRATION SYSTEMS TO BEST MEET DAYLIGHTING PERFORMANCE GOALS Luís closer to producing the desired flux distribution from the outdoor daylight distribution. INTRODUCTION The selection of fenestration systems for daylighting is traditionally done by trial and error. Designers try

  8. P5.60B DERIVATION OF DAYLIGHT AND SOLAR IRRADIANCE DATA FROM SATELLITE OBSERVATIONS

    E-Print Network [OSTI]

    Heinemann, Detlev

    P5.60B DERIVATION OF DAYLIGHT AND SOLAR IRRADIANCE DATA FROM SATELLITE OBSERVATIONS A. Hammer, D project SATELLIGHT an attempt is made to use satellite methods to derive daylight and solar irradiance). In daylighting applications, knowledge of the lumi- nance distribution of the sky is of primary concern. Thus

  9. ACTIVITY OF HAWAIIAN REEF FISHES DURING THE EVENING AND MORNING TRANSITIONS BETWEEN DAYLIGHT AND DARKNESS

    E-Print Network [OSTI]

    ACTIVITY OF HAWAIIAN REEF FISHES DURING THE EVENING AND MORNING TRANSITIONS BETWEEN DAYLIGHT inactive at night, the latter mainly inactive in daylight. During active periods their behavior, with the diurnal species mostly inactive in darkness and the nocturnal species mostly inactive in daylight (Hobson

  10. Inverse Modeling Using a Wireless Sensor Network (WSN) for Personalized Daylight Harvesting

    E-Print Network [OSTI]

    Agogino, Alice M.

    Inverse Modeling Using a Wireless Sensor Network (WSN) for Personalized Daylight Harvesting Ryan: predictive: daylight harvesting: piecewise linear regression: building energy efficiency Abstract: Smart light levels, discretized by sub-hourly sun angles. Applied on two days of daylight and ten days

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

    E-Print Network [OSTI]

    Whitehouse, Kamin

    SunCast: Fine-grained Prediction of Natural Sunlight Levels for Improved Daylight Harvesting, USA {jklu,whitehouse}@cs.virginia.edu ABSTRACT Daylight harvesting is the use of natural sunlight to reduce the need for artificial lighting in buildings. The key challenge of daylight harvesting

  12. Robustness of circadian clocks to daylight fluctuations: hints from the picoeucaryote

    E-Print Network [OSTI]

    Lefranc, Marc

    1 Robustness of circadian clocks to daylight fluctuations: hints from the picoeucaryote in daylight intensity on the core circadian oscillator, a type of perturbation that has been rarely considered strategy to shield the circadian clock from daylight fluctuations by localizing coupling to the light

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

    E-Print Network [OSTI]

    Whitehouse, Kamin

    Using Simple Light Sensors to Achieve Smart Daylight Harvesting Jiakang Lu, Dagnachew Birru, Kamin demonstrate how to improve the effectiveness of daylight harvesting with a sin- gle light sensor on each sky to predict the incoming daylight and set window transparency accordingly. We evaluate our system

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

    E-Print Network [OSTI]

    LBNL-6496E Empirical assessment of a prismatic daylight- redirecting window film in a full in Leukos, the journal of the IESNA. Empirical assessment of a prismatic daylight- redirecting window film Laboratory, Mailstop 90-3111, 1 Cyclotron Road, Berkeley, CA 94720 USA Abstract Daylight redirecting systems

  15. Robustness of Circadian Clocks to Daylight Fluctuations: Hints from the Picoeucaryote Ostreococcus tauri

    E-Print Network [OSTI]

    Lefranc, Marc

    Robustness of Circadian Clocks to Daylight Fluctuations: Hints from the Picoeucaryote Ostreococcus in daylight intensity on the core circadian oscillator, a type of perturbation that has been rarely considered F, Bouget F-Y, et al. (2010) Robustness of Circadian Clocks to Daylight Fluctuations: Hints from

  16. Annual daylighting performance of a passive optical light shelf in sidelit perimeter zones of

    E-Print Network [OSTI]

    Annual daylighting performance of a passive optical light shelf in sidelit perimeter zones Government or any agency thereof or The Regents of the University of California. #12;1 Annual daylighting use in deep perimeter zones of buildings where the windows are subject to high daylight availability

  17. DARKNESS, TWILIGHT, AND DAYLIGHT FORAGING SUCCESS OF BEARS (URSUS AMERICANUS) ON SALMON

    E-Print Network [OSTI]

    Reimchen, Thomas E.

    DARKNESS, TWILIGHT, AND DAYLIGHT FORAGING SUCCESS OF BEARS (URSUS AMERICANUS) ON SALMON IN COASTAL (2000­2002). Bears (maximum 7 simultaneously) were primarily active during daylight near the onset with other bears (4%). Scavenging was greatest during daylight (19%) and lowest during darkness (3%). Bears

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

    SciTech Connect (OSTI)

    Grobe, Lars; Wittkopf, Stephen; Pandey, Anupama Rana; Xiaoming, Yang; Seng, Ang Kian; Scartezzini, Jean-Louis; Selkowitz, Stephen

    2010-02-28T23:59:59.000Z

    A setup to monitor the daylighting performance of different glazing types in Singapore is presented. The glazing is installed in the facade of four dedicated testing chambers in BCAA's Zero Energy Building in Singapore. These test rooms are equipped with sensors that both record illuminances on the work plane, and luminances as seen by occupants. The physical and logical design of the monitoring system is presented. Criteria to assess the daylighting performance are introduced, and initial results of the work in progress are presented.

  19. Analysis of Daylighting Requirements within ASHRAE Standard 90.1

    SciTech Connect (OSTI)

    Athalye, Rahul A.; Xie, YuLong; Liu, Bing; Rosenberg, Michael I.

    2013-08-01T23:59:59.000Z

    Pacific Northwest National Laboratory (PNNL), under the Building Energy Codes Program (BECP) funded by U.S. Department of Energy (DOE), provides support to the ASHRAE/IES/IESNA Standard 90.1(Standard 90.1) Standing Standards Project Committee (SSPC 90.1) and its subcommittees. In an effort to provide the ASHRAE SSPC 90.1 with data that will improve the daylighting and fenestration requirements in the Standard, PNNL collaborated with Heschong Mahone Group (HMG), now part of TRC Solutions. Combining EnergyPlus, a whole-building energy simulation software developed by DOE, with Radiance, a highly accurate illumination modeling software (Ward 1994), the daylighting requirements within Standard 90.1 were analyzed in greater detail. The initial scope of the study was to evaluate the impact of the fraction of window area compared to exterior wall area (window-to-wall ratio (WWR)) on energy consumption when daylighting controls are implemented. This scope was expanded to study the impact of fenestration visible transmittance (VT), electric lighting controls and daylighted area on building energy consumption.

  20. Daylight quantum key distribution over 1.6 km

    E-Print Network [OSTI]

    W. T. Buttler; R. J. Hughes; S. K. Lamoreaux; G. L. Morgan; J. E. Nordholt; C. G. Peterson

    2000-01-25T23:59:59.000Z

    Quantum key distribution (QKD) has been demonstrated over a point-to-point $\\sim1.6$-km atmospheric optical path in full daylight. This record transmission distance brings QKD a step closer to surface-to-satellite and other long-distance applications.

  1. 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]

    Smith, Brooke Ray

    2007-01-01T23:59:59.000Z

    Factors in Environmental Restoration: Strawberry Creek andBaxter Creek. Water Resource Center Archives, University ofNiazi. 2005. Blackberry Creek Daylighting Project, Berkeley:

  2. Comparative Study of summer, Winter and Quinox Sky Type of India Using Daylight Coefficient Method and Cie Standard General Sky Model

    E-Print Network [OSTI]

    Sutapa Mukherjee M. Tech

    Abstract:- Energy efficiency provided by daylight requires an accurate estimation of the amount of daylight entering a building. The actual daylight illuminance of a room is mainly influenced by the luminance levels and patterns of the sky in the direction of view of the window at that time. The daylight coefficient concept, which considers the changes in the luminance of the sky elements, offers a more effective way of computing indoor daylight illuminances. Recently, Kittler et al. have proposed a new range of 15 standard sky luminance distributions including the CIE (International Commission onIllumination) standard clear sky. Lately, these 15 sky luminance models have been adopted as the CIE Standard General Skies.This paper aims to find out representative CIE (International Commission on Illumination) Standard Clear Sky model(s) for three different seasons-winter solstice, equinox, and summer solstice applicable for prevailing clear sky climatic conditions in India [Roorkee]. Indian measured sky luminance distribution database is available only for Roorkee[29 0 51 ' N; 77 0 53 ' E]. To find out the best match between Indian measured sky luminance distribution and each of five CIE Standard Clear sky models, only sky component of spatial illuminance distribution over the working plane of a room was simulated by MATLABfor three different seasons. Daylight Coefficient method has been applied for the simulation using Indian sky luminance database.The simulation has been done for the room with eight different window orientations ranging from 0 0 to 315 0 with an interval of 45 0 to generate data for the entire sky vault. To find out the

  3. Validation of the Algorithms Developed for Preliminary Prediction of Daylight Distribution in a Toplighted Atrium

    E-Print Network [OSTI]

    Boubekri, M.; Atif, M. R.; Boyer, L. L.

    1988-01-01T23:59:59.000Z

    VALIDATION OF THE ALGORITHMS DEVELOPED FOR PRELIMINARY PREDICTION OF DAYLIGHT DISTRIBUTION IN A TOPLIGHTED ATRIUM MOHAMED BOUBEKRI MORAD R. ATIF LESTER L. BOYER PhD Candidate PhD Student PhD, Professor Texas A&M University Texas MM University... to understand daylight distribution throughout an atrium space is essential to produce good designs. Simp1 ified daylight prediction algorithms for preliminary design of top1 ighted atriums under overcast and clear diffuse skies have been developed as part...

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

    E-Print Network [OSTI]

    Fernandes, Luis

    2014-01-01T23:59:59.000Z

    Daylight Coefficients, Lighting Research and Technology,America, 1999, The IESNA lighting handbook: reference andcontrol of electric lighting and blinds, Solar Energy, 77(

  5. Daylighting in schools: Improving student performance and health at a price schools can afford: Preprint

    SciTech Connect (OSTI)

    Plympton, P.; Conway, S.; Epstein, K.

    2000-06-14T23:59:59.000Z

    Over the next seven years, at least 5,000 new schools will be designed and constructed to meet the needs of American students in kindergarten through grade 12. National efforts are underway to encourage the use of daylighting, energy efficiency, and renewable energy technologies in school designs, which can significantly enhance the learning environment. Recent rigorous statistical studies, involving 21,000 students in three states, reveal that students perform better in daylit classrooms and indicate the health benefits of daylighting. This paper discusses the evidence regarding daylighting and student performance and development, and presents four case studies of schools that have cost effectively implemented daylighting into their buildings.

  6. Applicability of daylighting computer modeling in real case studies: Comparison between measured and simulated daylight availability and lighting consumption. Building and Environment

    E-Print Network [OSTI]

    A. D. Atif

    this paper is published in / Une version de ce document se trouve dans : IEA (International Energy Agency) Task 21 / Annex 29: Daylight in Buildings, November 1998, 68 pp. www.nrc.ca/irc/ircpubs NRCC-42862 Subtask C: Daylighting Design Tools T21/C1-21/CAN/98-11 Applicability of Daylighting Computer Modeling in Real Case Studies: Comparison between Measured and Simulated Daylight Availability and Lighting Consumption A report of IEA SHC Task 21 / IEA ECBCS Annex 29 Daylight in Buildings Subtask C: Daylighting Design Tools Report T21/C1-21/CAN/98-11 Applicability of Daylighting Computer Modeling in Real Case Studies: Comparison between Measured and Simulated Daylight Availability and Lighting Consumption by Anca D. Galasiu * Morad R. Atif * A report of IEA SHC Task 21 / IEA ECBCS Annex 29 * National Research Council Canada, Institute for Research in Construction, Indoor Environment Research Program Subtask C: Daylighting Design Tools Report T21/C1-21/CAN/98-11 IEA Solar Heating and Cooling Programme (IEA SHC) The International Energy Agency (IEA) was established in 1974 as an autonomous agency within the framework of the Economic Cooperation and Development (OECD) to carry out a comprehensive program of energy cooperation among its 24 member countries and the Commission of the European Communities. An important part of the Agency's program involves collaboration in the research, development and demonstration of new energy technologies to reduce excessive reliance on imported oil, increase long-term energy security and reduce greenhouse gas emissions. The IEA's R&D activities are headed by the Committee on Energy Research and Technology (CERT) and supported by a small Secretariat staff, headquartered in Paris. In addition, three Working Parties are charged with monitorin...

  7. Study of the relationship between indoor daylight environments and patient average length of stay (ALOS) in healthcare facilities

    E-Print Network [OSTI]

    Choi, Joon Ho

    2007-04-25T23:59:59.000Z

    This study investigates how indoor daylight environments affect patient Average Length of Stay (ALOS), by evaluating and analyzing daylight levels in patient rooms in comparison to their ALOS. The patient ALOS data were taken at one general hospital...

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

    E-Print Network [OSTI]

    Rice, Edward Oren

    2006-01-01T23:59:59.000Z

    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 ...

  9. Experimental Evaluation of Innovative Wall Daylighting Systems

    E-Print Network [OSTI]

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

    1988-01-01T23:59:59.000Z

    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.... Providing illumination in buildings using sunlight as a substitute for electric light is attractive for several reasons: 1. The solar illumination resource is substantial; during most working hours, the solar illumination on a building is several times...

  10. Nanolens Window Coatings for Daylighting | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOilNEW HAMPSHIRE BUILDS OFFNanolens Window Coatings for Daylighting

  11. Towards Embedded Wireless-Networked Intelligent Daylighting Systems for Commercial Buildings

    E-Print Network [OSTI]

    Agogino, Alice M.

    Towards Embedded Wireless-Networked Intelligent Daylighting Systems for Commercial Buildings Yao, daylighting systems are not widely used in the commercial office building. Barriers prohibiting adoption) `Smart Dust motes' wireless platforms is explored. Due to their small size, they can be placed directly

  12. Overview Models of the Example Space Renderings using the Architectural Daylighting Tool

    E-Print Network [OSTI]

    Camera B; Joshua Nasman; Barbara Cutler

    Our new TUI for architectural daylighting design allows multiple users to a) gather around a physical sketching environment and select from b) a set of wall primitives and window and material markers to c) build a rough sketch of an architectural design. A d) visualization of a daylighting simulation is projected onto these surfaces.

  13. 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]

    Widder, James

    1985-01-01T23:59:59.000Z

    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 ...

  14. Color and spectral analysis of daylight in southern Javier Hernandez-Andres, Javier Romero, and Juan L. Nieves

    E-Print Network [OSTI]

    Lee Jr., Raymond L.

    Color and spectral analysis of daylight in southern Europe Javier Herna´ndez-Andre´s, Javier Romero We have analyzed the colorimetric and spectral characteristics of 2600 daylight spectra (global), luminous efficacies, and relative UV and IR contents of Granada daylight. The chromaticity coordinates

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

    E-Print Network [OSTI]

    Aizenberg, Joanna

    Dynamic daylight control system implementing thin cast arrays of polydimethylsiloxane: Daylight control system Dynamic window system Energy-efficiency Transparent louvers a b s t r a c in standard office buildings. The development of daylight control systems that maximize the penetration

  16. A CRITICAL REVIEW OF SIMULATION TECHNIQUES FOR DAYLIGHT RESPONSIVE SYSTEMS

    E-Print Network [OSTI]

    L. Doulos; A. Tsangrassoulis; F. Topalis

    * corresponding author Application of lighting control technologies has increased the public interest. Although these technologies have been promoted during the last years their successful use in buildings has been accomplished in a small percentage of new projects. One reason is the difficulty in quantifying the energy savings and thus the subsequent payback period. The majority of existing simulation tools (which are embedded in building energy codes) –needed during initial design- are based on the estimation of the potential energy savings due to daylight. The paper focus on the limitations of current simulation approaches comparing their results, in order to assess their accuracy. For this, special test cases have been developed exploiting their domain of validity.

  17. Fri Sep 4 09:04:00 EDT 2009 Fall 2009 Mathematics Page No. 1 ...

    E-Print Network [OSTI]

    3 Crs Sec CRN Days Time Bldg Room Instructor Office 15400 001 23010 MWF ... 16100 022 23066 MWF 3:30- 4:20 CL50 224 Sa_Barreto,Antonio C 410 16100 011 ... Th 3:30- 4:20 UNIV 017 Soboleski,Patrick J G140 16500 015 23111 Th 4:

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

    E-Print Network [OSTI]

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

    2002-01-01T23:59:59.000Z

    Our firm was under contract with the City of Austin, Texas to perform energy analysis and analysis of the daylighting potential within the New Austin Bergstrom International Airport Terminal. Design of the Passenger Terminal Facility for the New...

  19. A system for optimizing interior daylight distribution using reflective Venetian blinds with independent blind angle control

    E-Print Network [OSTI]

    McGuire, Molly E

    2005-01-01T23:59:59.000Z

    An operational algorithm for blind angle control is developed to optimize the daylighting performance of a system of reflective Venetian blinds. Numerical modeling and experiment confirm that independent control of alternating ...

  20. Form and daylight as a creative medium : Church of John Paul II in South End, Boston

    E-Print Network [OSTI]

    Gruzewski, Jaroslaw

    1992-01-01T23:59:59.000Z

    This thesis is an architectural design project of a Catholic Church dedicated to Pope John Paul II. The main intention of this Thesis is to explore and clearly present daylighting methods and techniques and how important ...

  1. Daylighting techniques used in indigenous buildings in the United Arab Emirates (UAE), an investigative approach

    E-Print Network [OSTI]

    Alnuaimi, Maitha Mohammed

    2009-06-02T23:59:59.000Z

    This study investigated the potential of the daylighting systems used in the indigenous architecture of the United Arab Emirates (UAE), located in Dubai (latitude 25° N longitude 55° E). The analysis tested the lighting performance of three...

  2. Daylighting Design Tools in Atria for Minimum Cooling Loads in Atrium Buildings

    E-Print Network [OSTI]

    Atif, M. R.; Boyer, L. L.; Degelman, L. O.; Claridge, D. E.

    The daylighting and sunlighting value of an atrium are considered the main reasons for including the atrium use in the built environment. However, most atria today are either overlit, which causes tremendous cooling loads, or underlit, requiring...

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

    E-Print Network [OSTI]

    Leaver, J.; McQueen, T.

    1987-01-01T23:59:59.000Z

    Daylighting and other passive energy technologies are critical issues that should be considered in the early stages of building planning and architectural design. Both new design and retrofit of existing buildings benefit greatly by use...

  4. An Empirical Study and Analysis of Daylight Penetration Through a Light Plenum

    E-Print Network [OSTI]

    Hill, G. E.; Rowland, D.; Carlson, K.; Karpack, L.

    1985-01-01T23:59:59.000Z

    Lighting accounts for approximately 54% of the annual energy consumption of office buildings, and can effectively be reduced through daylighting. The simplest way to provide day lighting into a typical office space has been to use unilateral...

  5. Daylighting and solar shading performances of an innovative automated reflective louver system

    E-Print Network [OSTI]

    Hashemi, Arman

    2014-08-07T23:59:59.000Z

    follows initial investigations into the design and applicability of an automated retrofitted panel thermal shutters which can also act as a sunshade and daylighting system. The system has a patented function which allows each shutter...

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

    E-Print Network [OSTI]

    Crowley, John Stephen

    1982-01-01T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Rungchareonrat, N.

    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... for the degree of MASTER OF SCIENCE August 2003 Major Subject: Architecture AN ANALYSIS OF ENERGY REDUCTIONS FROM THE USE OF DAYLIGHTING IN LOW-COST HOUSING A Thesis by NAYARAT RUNGCHAREONRAT...

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

    E-Print Network [OSTI]

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

    1985-01-01T23:59:59.000Z

    (including glazing) was %eld constant at values consistent with ASHRAE 90 standards. Since the thermal conductance of the glazing (single or dou- ble) exceeds the maximum U , as the glass area increases, the conductance 0% the opaque wall is reduced...- ing to a saturation of useful daylight and no sig- nificant further savings in electric lighting energy. This daylight saturation effect begins at effective apertures between 0.10 and 0.25 for typ- ical curtain wall designs in a perimeter zone...

  9. CLIMATE-BASED DAYLIGHT PERFORMANCE: BALANCING VISUAL AND NON-VISUAL ASPECTS OF LIGHT INPUT

    E-Print Network [OSTI]

    M. Andersen; J. Mardaljevic; Nicolas Roy; Jens Christoffersen

    This study uses a domestic dwelling as the setting to investigate and explore the applicability of daylighting metrics for residential buildings, including the formulation of metrics for nonvisual effects. The simulation approach used to generate the performance data from which the metrics are derived is called climate-based daylight modelling (CBDM). This approach delivers predictions of various luminous quantities using sun and sky conditions that are derived from standardised annual meteorological datasets. Although there are uncertainties regarding the precise calibration, there is now sufficient empirical data to parameterise models that also simulate the non-visual aspects of daylight, e.g. for circadian entrainment and a general sense of ?alertness?. For these non-visual aspects, vertical illuminance at the eye was predicted using a modified climate-based daylight modelling approach. In the paper, we consider what relation there might be between the three aspects of daylight provision and if these relations appear to be complementary or conflicting in nature: for task; to reduce electric lighting usage; and, for non-visual effects. The implications for future building guidelines for daylighting are also discussed.

  10. Review of the WECC EDT phase 2 EIM benefits analysis and results report.

    SciTech Connect (OSTI)

    Veselka, T.D.; Poch, L.A.; Botterud, A. (Decision and Information Sciences)

    2012-04-05T23:59:59.000Z

    A region-wide Energy Imbalance Market (EIM) was recently proposed by the Western Electricity Coordinating Council (WECC). In order for the Western Area Power Administration (Western) to make more informed decisions regarding its involvement in the EIM, Western asked Argonne National Laboratory (Argonne) to review the EIM benefits study (the October 2011 revision) performed by Energy and Environmental Economics, Inc. (E3). Key components of the E3 analysis made use of results from a study conducted by the National Renewable Energy Laboratory (NREL); therefore, we also reviewed the NREL work. This report examines E3 and NREL methods and models used in the EIM study. Estimating EIM benefits is very challenging because of the complex nature of the Western Interconnection (WI), the variability and uncertainty of renewable energy resources, and the complex decisions and potentially strategic bidding of market participants. Furthermore, methodologies used for some of the more challenging aspects of the EIM have not yet matured. This review is complimentary of several components of the EIM study. Analysts and modelers clearly took great care when conducting detailed simulations of the WI using well-established industry tools under stringent time and budget constraints. However, it is our opinion that the following aspects of the study and the interpretation of model results could be improved upon in future analyses. The hurdle rate methodology used to estimate current market inefficiencies does not directly model the underlying causes of sub-optimal dispatch and power flows. It assumes that differences between historical flows and modeled flows can be attributed solely to market inefficiencies. However, flow differences between model results and historical data can be attributed to numerous simplifying assumptions used in the model and in the input data. We suggest that alternative approaches be explored in order to better estimate the benefits of introducing market structures like the EIM. In addition to more efficient energy transactions in the WI, the EIM would reduce the amount of flexibility reserves needed to accommodate forecast errors associated with variable production from wind and solar energy resources. The modeling approach takes full advantage of variable resource diversity over the entire market footprint, but the projected reduction in flexibility reserves may be overly optimistic. While some reduction would undoubtedly occur, the EIM is only an energy market and would therefore not realize the same reduction in reserves as an ancillary services market. In our opinion the methodology does not adequately capture the impact of transmission constraints on the deployment of flexibility reserves. Estimates of flexibility reserves assume that forecast errors follow a normal distribution. Improved estimates could be obtained by using other probability distributions to estimate up and down reserves to capture the underlying uncertainty of these resources under specific operating conditions. Also, the use of a persistence forecast method for solar is questionable, because solar insolation follows a deterministic pattern dictated by the sun's path through the sky. We suggest a more rigorous method for forecasting solar insolation using the sun's relatively predictable daily pattern at specific locations. The EIM study considered only one scenario for hydropower resources. While this scenario is within the normal range over the WI footprint, it represents a severe drought condition in the Colorado River Basin from which Western schedules power. Given hydropower's prominent role in the WI, we recommend simulating a range of hydropower conditions since the relationship between water availability and WI dispatch costs is nonlinear. Also, the representation of specific operational constraints faced by hydropower operators in the WI needs improvements. The model used in the study cannot fully capture all of the EIM impacts and complexities of power system operations. In particular, a primary benefit of the EIM is a shorter dispa

  11. Assessing the Feasibility of Creek Daylighting in San Francisco, Part II: A Preliminary Analysis of Yosemite Creek

    E-Print Network [OSTI]

    Smith, Brooke Ray

    2007-01-01T23:59:59.000Z

    Lucas. 2006. Islais Creek reinterpreted: An exploration ofwould be triggered? If the creek conveys stormwater runoff,2004. Daylighting Islais Creek: a feasibility study.

  12. Effectiveness of External Window Attachments Based on Daylight Utilization and Cooling Load Reduction for Small Office Buildings in Hot Humid Climates

    E-Print Network [OSTI]

    Soebarto, V. I.; Degelman, L. O.

    1994-01-01T23:59:59.000Z

    reduce the amount of the daylight needed to supplement interior lighting. Therefore the objective of this study was to explore which strategy would give a balance between solar heat gain reduction and daylight utilization and result in the most energy...

  13. BUILDING RESEARCH & INFORMATION (2008) Paper in press (mock proof) expected to appear in Vol 36 No 6 (Nov 2008) An intuitive daylighting performance

    E-Print Network [OSTI]

    Varela, Carlos

    No 6 (Nov 2008) An intuitive daylighting performance analysis and optimization approach M. Andersen1 of daylighting considerations into the design process requires many issues to be addressed simultaneously quantitative and qualitative performance criteria using daylighting analysis data in various forms

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

    E-Print Network [OSTI]

    California at Davis, University of

    in energy-efficient lighting and daylighting technologies. Collaborating with partners in government common ways CLTC utilizes funding to advance the science of energy-efficient lighting and daylighting and field test emerging lighting and daylighting technologies. Demonstrations help vet the performance

  15. Evaluation of the Daylight Cycle of Model-Predicted Cloud Amount and Condensed Water Path over Europe with Observations from MSG SEVIRI

    E-Print Network [OSTI]

    Stoffelen, Ad

    Evaluation of the Daylight Cycle of Model-Predicted Cloud Amount and Condensed Water Path over accurate information on diurnal cycles during daylight hours of cloud properties over land and ocean surfaces. This paper evaluates the daylight cycle of CA and CWP as predicted by the Regional Atmospheric

  16. Impact of Fixed Exterior Shading on Daylighting: A Case Study of the David Brower Center

    E-Print Network [OSTI]

    Zelenay, Krystyna

    2011-01-01T23:59:59.000Z

    blind systems were always lowered and seasonally adjusted (continued on next page) MS Thesis,Thesis, Dept. of Architecture, UC Berkeley 2011 http://escholarship.org/uc/item/1mq5k9mw blinds,blinds frequently enough to take advantage of daylighting. 14 While MS Thesis,

  17. Evaluation of Lightshelf Daylighting Systems for Office Buildings in Hot Climates

    E-Print Network [OSTI]

    Abdulmohsen, A.; Boyer, L. L.; Degelman, L. O.

    1994-01-01T23:59:59.000Z

    and heat by shading view apertures below the shelf to reduce solar heat gain and glare and by reflecting light deep into the space through the daylight aperture above the shelf. It also investigates how to provide view with good interior lighting in terms...

  18. Monitored Energy Performance of Electrochromic Windows Controlledfor Daylight and Visual Comfort

    SciTech Connect (OSTI)

    Lee, Eleanor S.; DiBartolomeo, Dennis L.; Klems, Joseph; Yazdanian, Mehry; Selkowitz, Stephen E.

    2005-09-23T23:59:59.000Z

    A 20-month field study was conducted to measure the energy performance of south-facing large-area tungsten-oxide absorptive electrochromic (EC) windows with a broad switching range in a private office setting. The EC windows were controlled by a variety of means to bring in daylight while minimizing window glare. For some cases, a Venetian blind was coupled with the EC window to block direct sun. Some tests also involved dividing the EC window wall into zones where the upper EC zone was controlled to admit daylight while the lower zone was controlled to prevent glare yet permit view. If visual comfort requirements are addressed by EC control and Venetian blinds, a 2-zone EC window configuration provided average daily lighting energy savings of 10 {+-} 15% compared to the reference case with fully lowered Venetian blinds. Cooling load reductions were 0 {+-} 3%. If the reference case assumes no daylighting controls, lighting energy savings would be 44 {+-} 11%. Peak demand reductions due to window cooling load, given a critical demand-response mode, were 19-26% maximum on clear sunny days. Peak demand reductions in lighting energy use were 0% or 72-100% compared to a reference case with and without daylighting controls, respectively. Lighting energy use was found to be very sensitive to how glare and sun is controlled. Additional research should be conducted to fine-tune EC control for visual comfort based on solar conditions so as to increase lighting energy savings.

  19. D i i f S t i bilit i th B ilt E i tDesigning for Sustainability in the Built Environment Exterior Facade Design for Maximum Daylighting and Solar Power

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Facade Design for Maximum Daylighting and Solar Power GenerationGeneration A frank assessment of issues "...the art and science of daylighting is not so much about how to provide enough daylighting as how to do LIGHTING CHARACTER DUE TO DAYLIGHT VARIABILITY · PSYCHOLOGICAL BENEFITS OF· PSYCHOLOGICAL BENEFITS

  20. accident survival time: Topics by E-print Network

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

    person(s) involved in IncidentAccident: 1) Name New Hampshire, University of 2 Does Daylight Savings Time Affect Traffic Accidents? Texas A&M University - TxSpace Summary: This...

  1. 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

  2. Origins of Analysis Methods Used to Design High Performance Commercial Buildings: Part III, Lighting and Daylighting Simulation

    E-Print Network [OSTI]

    Oh, S.; Haberl, J.S.

    Origins of analysis methods used to design high performance commercial buildings: Part III, Lighting and daylighting simulation Sukjoon Oh Jeff S. Haberl Student Member ASHRAE Fellow ASHRAE This study is the third part of the review... methods used in lighting and daylighting simulation programs are described. In companion papers, the origins of the analysis methods of whole-building energy and solar energy analysis programs are reviewed(Oh and Haberl 2014a, 2014b). Introduction...

  3. Practical free-space quantum key distribution over 10 km in daylight and at night

    E-Print Network [OSTI]

    Richard J. Hughes; Jane E. Nordholt; Derek Derkacs; Charles G. Peterson

    2002-06-14T23:59:59.000Z

    We have demonstrated quantum key distribution (QKD) over a 10-km, 1-airmass atmospheric range during daylight and at night. Secret random bit sequences of the quality required for the cryptographic keys used to initialize secure communications devices were transferred at practical rates with realistic security. By identifying the physical parameters that determine the system's secrecy efficiency, we infer that free-space QKD will be practical over much longer ranges under these and other atmospheric and instrumental conditions.

  4. Minimizing lighting power density in office rooms equipped with Anidolic Daylighting Systems

    SciTech Connect (OSTI)

    Linhart, Friedrich; Scartezzini, Jean-Louis [Solar Energy and Building Physics Laboratory (LESO-PB), Ecole Polytechnique Federale de Lausanne (EPFL), 1015 Lausanne (Switzerland)

    2010-04-15T23:59:59.000Z

    Electric lighting is responsible for up to one third of an office building's electricity needs. Making daylight more available in office buildings can not only contribute to significant energy savings but also enhance the occupants' performance and wellbeing. Anidolic Daylighting Systems (ADS) are one type of very effective facade-integrated daylighting systems. All south-facing office rooms within the LESO solar experimental building in Lausanne (Switzerland) are equipped with a given type of ADS. A recent study has shown that these offices' occupants are highly satisfied with their lighting environment. The most energy-efficient south-facing offices have a lighting power density of less than 5W/m{sup 2}. The lighting situation within these ''best practice''-offices has been assessed using the lighting simulation software RELUX Vision. Because this lighting situation is very much appreciated by the occupants, it was used as a starting point for developing even more energy-efficient office lighting designs. Two new lighting designs, leading to lighting power densities of 3.9W/m{sup 2} and 3W/m{sup 2}, respectively, have been suggested and simulated with RELUX Vision. Simulation results have shown that the expected performances of these new systems are comparable to that of the current lighting installation within the ''best practice''-offices or even better. These simulation results have been confirmed during experiments on 20 human subjects in a test office room recently set up within the LESO building. This article gives engineers, architects and light planers valuable information and ideas on how to design energy-efficient and comfortable electric lighting systems in office rooms with abundant access to daylight. (author)

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

    SciTech Connect (OSTI)

    Guglielmetti, R.; Pless, S.; Torcellini, P.

    2010-08-01T23:59:59.000Z

    This paper illustrates the challenges of integrating rigorous daylight and electric lighting simulation data with whole-building energy models, and defends the need for such integration to achieve aggressive energy savings. Through a case study example, we examine the ways daylighting -- and daylighting simulation -- drove the design of a large net-zero energy project. We give a detailed review of the daylighting and electric lighting design process for the National Renewable Energy Laboratory's Research Support Facility (RSF), a 220,000 ft2 net-zero energy project the author worked on as a daylighting consultant. A review of the issues involved in simulating and validating the daylighting performance of the RSF will be detailed, including daylighting simulation, electric lighting control response, and integration of Radiance simulation data into the building energy model. Daylighting was a key strategy in reaching the contractual energy use goals for the RSF project; the building's program, layout, orientation and interior/furniture design were all influenced by the daylighting design, and simulation was critical in ensuring these many design components worked together in an integrated fashion, and would perform as required to meet a very aggressive energy performance goal, as expressed in a target energy use intensity.

  6. Plasma lighting, fiber optics, and daylight collectors: Toward the next revolution in high-efficiency illumination

    SciTech Connect (OSTI)

    Audin, L. [Columbia Univ., New York, NY (United States)

    1995-06-01T23:59:59.000Z

    Combining three recently marketed innovations may provide the next revolution in illumination, making many other recent advances eventually obsolete. The first is plasma lighting, pioneered by Fusion Lighting Inc. of Rockville, Maryland, and first commercially applied by Hutchins International Ltd. of Mississauga, Ontario. This microwave-generated light source yields very high-quality light with efficacies at or beyond high intensity discharge (HID) lamps. The source uses no mercury, thus eliminating lamp disposal problems, and has no cathode, thereby providing very long lamp life. Using no phosphors, it also has very short start and re-strike periods, and is dimmable. The second innovation is in the distribution of light. Commercial developments in fiber optics and light guides now provide products that transfer light from a remote point and distribute it like standard light fixtures. Advances in fiber optic communications and applications to decorative lighting have supplied relatively economical systems for mounting and directing light from both electric light sources and the sun. The third advance is a result of efforts to harness daylight. Unlike architectural daylighting that directs sunlight into perimeter areas through glazing, daylight collectors are roof-mounted devices that supply light to interior and underground spaces through hollow columns and open chases. Aided by improvements and cost reductions in sun-tracking (i.e., heliostatic) controls that capture and concentrate sunlight, such collectors offer a source of free light to locations that might otherwise never receive it. When combined together, these three options could offer a centralized building lighting system that pipes lumens to distribution devices replacing many existing lamps and fixtures.

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

    SciTech Connect (OSTI)

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

    2011-01-21T23:59:59.000Z

    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.

  8. Key word:Daylight Factor Window Wall Ratio Pendentive dome Lighting design Tropical region Architecture and Interior design

    E-Print Network [OSTI]

    Mehrdad Mazloomi

    Abstract: Daylighting design plays important role in architecture of religious buildings such as churches and mosques where pendentive dome construction is frequently used. In daylighting design, many designers face difficulty in estimating the interior share of light which is usually expressed by daylight factor due to complexity of interior form. This study aims to provide designers with a rather high precision rule of thumb for average daylight factor in pendentive dome building. Thus, it investigates the Daylight Factor [DF] distribution of such buildings with reference to the tropics. It takes the Window Wall Ratio [WWR] into account and seeks its influence on daylight factor. By a 12 X 12 points grid, it examines five different ratios including 0.1, 0.2, 0.3, 0.4 and 0.5 on DF of the floor beneath the dome. The results endorse the direct relation of WWR and DF. The least WWR equal to 0.1 yields an average DF of 0.55 % while the greatest WWR of 0.5 yields in average DF of 2.56%. The intermediate WWR in steps of 0.2, 0.3 and 0.4 correspond to 1.04, 1.56 and 2.07 percent respectively. As a relatively precise rule of thumb, any increment in consequent steps of WWR with 0.1 intervals results in 0.5 % increase in DF. This can be employed by architects and interior designers for lighting design of pendentive dome buildings in tropical region.

  9. Demonstration with Energy and Daylighting Assessment of Sunlight Responsive Thermochromic (SRT) Window Systems

    SciTech Connect (OSTI)

    Broekhuis, Michael; Liposcak, Curtis; Witte, Michael; Henninger, Robert; Zhou, Xiaohui; Petzen, George; Buchanan, Michael; Kumar, Sneh

    2012-03-31T23:59:59.000Z

    Pleotint, LLC was able to successfully extrude thermochromic interlayer for use in the fenestration industry. Pleotint has developed a thermochromic sytem that requires two thermochromic colors to make a neutral color when in the tinted state. These two colors were assembled into a single interlayer called a tri-layer prelam by Crown Operations for use in the glass lamination industry. Various locations, orientations, and constructions of thermochromic windows were studied with funds from this contract. Locations included Australia, California, Costa Rica, Indiana, Iowa, Mexico. Installed orientations included vertical and skylight glazing applications. Various constructions included monolithic, double pane, triple pane constructions. A daylighting study was conducted at LinEl Signature. LinEl Signature has a conference room with a sylight roof system that has a west orientation. The existing LinEl Signature conference room had constant tint 40% VLT transparent skylights. Irradiance meters were installed on the interior and exterior sides of a constant tint skylight. After a month and a half of data collection, the irradiance meters were removed and the constant tint skylights were replaced with Pleotint thermochromic skylight windows. The irradiance meters were reinstalled in the same locations and irradiance data was collected. Both data sets were compared. The data showed that there was a linear relationship with exterior and interior irradiance for the existing constant tint skylights. The thermochromic skylights have a non-linear relationship. The thermochromic skylights were able to limit the amount of irradiance that passed through the thermochromic skylight. A second study of the LinEl Signature conference was performed using EnergyPlus to calculate the amount of Illuminance that passed through constant tint skylights as compared to thermochromic skylights. The constant tint skylights transmitted Illuminance is 2.8 times higher than the thermochromic skylights during the months of May, June, July, August and 1.9 times higher than the thermochromic skylight during the months of March, April, September, October. Calculated illuminance levels were much more consistent as compared to the existing constant tint skylights installed at LinEl Signature. This allows for a more comfortable interior space in regard to glare discomfort and interior lighting control. Lawrence Berkeley National Laboratory was contracted to characterize the performance of the thermochromic interlayer and thermochromic window systems. Thermochromic interlayer was characterized with spectrometer equipment. The thermochromic window systems were characterized using LBNL’s Advanced Window Test Facility. A copy of the report can be found in the Appendix. Iowa State University was contracted to compare thermochromic window technology to constant tint technology. Iowa State University conducted the testing at the Energy Resource Station (ERS). The ERS has the ability to simultaneously test side-by-side competing building technologies. The building is equipped with two identical air handling units, each with its own dedicated and identical chiller. One air handling unit supplies the four test rooms designated as the A rooms and the other unit serves the four test rooms designated as the B rooms. There is one A test room and one B test rooms arranged as pairs in a side-by-side design with each pair having a different exposure. There is a pair of test rooms that face the south, an east and west facing pair. Each of the test rooms is a mirror image of its match with identical construction. The rooms are unoccupied; however, the capability to impose false loads on the rooms exists. The false loads and room lighting can be scheduled to simulate various usage patterns. A copy of the report can be found in the Appendix. GARD Analytics was contracted to compare EnergyPlus building simulations to the data recorded at the Iowa ERS. The goal of this research was to validate the building simulation software developed by the US Department of Energy. EnergyPlus is

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

    SciTech Connect (OSTI)

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

    2013-08-31T23:59:59.000Z

    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.

  11. Daylighting design analysis. Project status report No. 2, 1 March-31 December 1980. [For pre-engineered metal buildings

    SciTech Connect (OSTI)

    Hallagan, W.B.; Lindsey, L.L.; Snyder, M.K.

    1980-01-01T23:59:59.000Z

    Detailed scale model studies regarding daylighting aspects of the passive/hybrid solar test building located at Butler Research Center in Grandview, MO are discussed. The product development program is aimed at providing passive/hybrid system building alternatives for commercial, industrial, and community purchasers of Butler's Landmark pre-engineered metal buildings. Occasioned by recognition, early in the project, that daylighting could strongly influence annual energy consumption in buildings of the targetted use types, scale models of several alternative design configurations, including that of the test building in Grandview, were built and tested. The major design alternatives, test results, and conclusions to date are described.

  12. Does Extending Daylight Saving Time Save Energy? Evidence from an Australian Experiment

    E-Print Network [OSTI]

    KELLOGG, RYAN M; Wolff, Hendrik

    2007-01-01T23:59:59.000Z

    Effect of DST on Electricity Consumption at Hour 16Effect of DST on Electricity Consumption at Hour 27Effect of DST on Electricity Consumption at Hour 39 P e rc e

  13. Does Daylight Saving Time Save Energy? Evidence from a Natural Experiment in Indiana

    E-Print Network [OSTI]

    Kotchen, Matthew J; Grant, Laura E.

    2008-01-01T23:59:59.000Z

    small changes in electricity consumption. Table 8: Thethe DST change in electricity consumption of 166,217 MWh/DST effects on electricity consumption in the United States

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2, 2003Tool of tomorrow today ToolTopWindDepartment

  15. An experimental setup to evaluate the daylighting performance of an advanced optical light pipe for deep-plan office buildings

    E-Print Network [OSTI]

    Martins Mogo de Nadal, Betina Gisela

    2005-11-01T23:59:59.000Z

    This research focuses on an advanced optical light pipe daylighting system as a means to deliver natural light at the back of deep-plan office buildings (15ft to 30ft), using optimized geometry and high reflective materials. The light pipe...

  16. 2003: Energy performance of daylight-linked automatic lighting control systems in large atrium spaces: report on two field-monitored case studies

    E-Print Network [OSTI]

    M. R. Galasiu; Morad R. Atif; Anca D. Galasiu

    This paper presents the field-measured energy performance of two common types of daylight-linked lighting control systems, continuous dimming and automatic on/off installed in two existing large atrium spaces located in Canada. The daylighting performance was evaluated based on the daylight contribution to the indoor illuminance and the amount of electrical lighting displaced by daylighting via the daylight-linked lighting control systems. Measured daylighting contribution to the space indicates that significant lighting energy savings can be achieved in atrium spaces if the daylight-linked lighting control system is appropriately selected, installed and commissioned throughout its existence. Results extrapolated from measurements collected during summer and winter indicate that as installed, the continuous dimming lighting control system provides 46% annual savings in electrical lighting consumption, while the automatic on/off saves between 11-17% in lighting energy. These savings account for 68% of the lighting energy consumed during main occupancy for the continuous dimming system, and 31.5% for the automatic on/off. Operation irregularities such as a reduced dimming linearity and an incorrect adjustment of the phases of the dimming control system, as well as the inadequate location of the photocell controlling the automatic on/off lighting system, the improper maintenance of the skylight during winter and the oversizing of the lighting system reduced the energy efficiency of the lighting control systems by 30-65%.

  17. The use of daylight in the design of a controlled environment for food production in the Caribbean and other equatorial climates

    E-Print Network [OSTI]

    Charles, Curtis B

    1989-01-01T23:59:59.000Z

    This thesis addresses the use of daylight in the design of a controlled environment for food production in the Caribbean and other Equatorial climates. An expanding population has put a tremendous burden on the food ...

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

    DOE Patents [OSTI]

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

    1983-01-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

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

    2011-03-01T23:59:59.000Z

    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.

  20. Webinar: Increasing Renewable Energy with Hydrogen Storage and Fuel Cell Technologies

    Broader source: Energy.gov [DOE]

    The Energy Department will present a webinar titled "Increasing Renewable Energy with Hydrogen Storage and Fuel Cell Technologies" on Tuesday, August 19, from 12:00 to 1:00 p.m. Eastern Daylight Time (EDT). The webinar will feature representatives from the National Renewable Energy Laboratory presenting a unique opportunity for the integration of multiple sectors including transportation, industrial, heating fuel, and electric sectors on hydrogen.

  1. EnergyPlus Run Time Analysis

    E-Print Network [OSTI]

    Hong, Tianzhen

    2009-01-01T23:59:59.000Z

    solve the building envelope thermal dynamics with the HVACenvelope heat transfer, solar shading, daylighting, thermal

  2. A SIMULATION ASSESSMENT OF THE HEIGHT OF LIGHT SHELVES TO ENHANCE DAYLIGHTING QUALITY IN TROPICAL OFFICE BUILDINGS UNDER OVERCAST SKY CONDITIONS IN DHAKA, BANGLADESH

    E-Print Network [OSTI]

    Md. Ashikur; Rahman Joarder; Zebun Nasreen Ahmed; Andrew Price; Monjur Mourshed

    The objective of this paper is to highlight the effectiveness of light shelves in tropical office buildings to enhance interior daylighting quality. Daylight simulation was performed for custom light shelves for a typical office floor of Dhaka City in Bangladesh, to determine the best possible location under overcast sky conditions. Six alternative models of a 3m high study space were created with varying heights of light shelves. The 3D models were first generated in the Ecotect to study the distribution and uniformity of daylight in the interior space with splitflux method. These models were then exported to a physically-based backward raytracer, Radiance Synthetic Imaging software to generate realistic lighting levels for validating and crosschecking the Ecotect results. The results showed that for achieving light levels closest to specified standards, light shelves at a height of 2m above floor level perform better among the seven alternatives studied including the alternative where no light shelves are present. Finally, the decisions were verified with DAYSIM simulation program to ensure the compliance of the decisions with dynamic annual climate-based daylight performance metrics.

  3. Daylight photocatalysis performance of biomorphic CeO{sub 2} hollow fibers prepared with lens cleaning paper as biotemplate

    SciTech Connect (OSTI)

    Qian, Junchao; Chen, Feng [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China)] [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China); Wang, Fang; Zhao, Xiaobing [Department of Materials Science and Engineering, Changzhou University, 213164 Changzhou (China)] [Department of Materials Science and Engineering, Changzhou University, 213164 Changzhou (China); Chen, Zhigang, E-mail: ziyou1900@gmail.com [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China) [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China); Jiangsu Key Laboratory for Environment Functional Materials, 215009 Suzhou University of Science and Technology, Suzhou (China); State Key laboratory of Crystal Material, Shandong University, 250100 Jinan (China)

    2012-08-15T23:59:59.000Z

    Highlights: ? A novel, simple and eco-friendly approach for hierarchical, biomorphic CeO{sub 2} hollow fibers with mesoporous tube walls is presented by using paper as template. ? The biomorphic CeO{sub 2} fibers was composed of nanosheets with bimodal pore-size mesoporous distribution and exhibited high light-harvesting under sunlight irradiation. ? The CeO{sub 2} microfibers biomimicking the natural plant structures have promising application for photodegradation of organic pollutants in water. -- Abstract: Hierarchical, biomorphic CeO{sub 2} hollow fibers with mesoporous tube walls have been fabricated using lens cleaning paper as biotemplates. After sintered at 550 °C in air, the cellulosic fibers of paper were converted into micro-tubes composing of CeO{sub 2} crystallites with grain size about 8 nm. The photocatalytic activity of the CeO{sub 2} fibers was evaluated by photodegradation efficiency of methylene blue in aqueous solution under daylight irradiation. The characterized results show that the CeO{sub 2} fibers faithfully replicated micro-fibrous structure derived from original template and possessed dramatic enhanced photocatalytic activity compared with bulk CeO{sub 2}. This simple biotemplate method provides a cost-effective and eco-friendly route to obtain high performance photocatalysts.

  4. Method and apparatus for free-space quantum key distribution in daylight

    DOE Patents [OSTI]

    Hughes, Richard J.; Buttler, William T.; Lamoreaux, Steve K.; Morgan, George L.; Nordholt, Jane E.; Peterson, C. Glen; Kwiat, Paul G.

    2004-06-08T23:59:59.000Z

    A quantum cryptography apparatus securely generates a key to be used for secure transmission between a sender and a receiver connected by an atmospheric transmission link. A first laser outputs a timing bright light pulse; other lasers output polarized optical data pulses after having been enabled by a random bit generator. Output optics transmit output light from the lasers that is received by receiving optics. A first beam splitter receives light from the receiving optics, where a received timing bright light pulse is directed to a delay circuit for establishing a timing window for receiving light from the lasers and where an optical data pulse from one of the lasers has a probability of being either transmitted by the beam splitter or reflected by the beam splitter. A first polarizer receives transmitted optical data pulses to output one data bit value and a second polarizer receives reflected optical data pulses to output a second data bit value. A computer receives pulses representing receipt of a timing bright timing pulse and the first and second data bit values, where receipt of the first and second data bit values is indexed by the bright timing pulse.

  5. Daylight operation of a free space, entanglement-based quantum key distribution system

    E-Print Network [OSTI]

    Peloso, Matthew P; Ho, Caleb; Lamas-Linares, Antia; Kurtsiefer, Christian

    2008-01-01T23:59:59.000Z

    Many quantum key distribution (QKD) implementations using a free space transmission path are restricted to operation at night time in order to distinguish the signal photons used for a secure key establishment from background light. Here, we present a lean entanglement-based QKD system overcoming that imitation. By implementing spectral, spatial and temporal filtering techniques, we were able to establish a secure key continuously over several days under varying light and weather conditions.

  6. Daylight operation of a free space, entanglement-based quantum key distribution system

    E-Print Network [OSTI]

    Matthew P. Peloso; Ilja Gerhardt; Caleb Ho; Antia Lamas-Linares; Christian Kurtsiefer

    2008-12-10T23:59:59.000Z

    Many quantum key distribution (QKD) implementations using a free space transmission path are restricted to operation at night time in order to distinguish the signal photons used for a secure key establishment from background light. Here, we present a lean entanglement-based QKD system overcoming that imitation. By implementing spectral, spatial and temporal filtering techniques, we were able to establish a secure key continuously over several days under varying light and weather conditions.

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

    SciTech Connect (OSTI)

    Software, Anyhere; Fernandes, Luis; Lee, Eleanor; Ward, Greg

    2013-03-15T23:59:59.000Z

    A simulation study was conducted to evaluate lighting energy savings of split-pane electrochromic (EC) windows controlled to satisfy key visual comfort parameters. Using the Radiance lighting simulation software, interior illuminance and luminance levels were computed for a south-facing private office illuminated by a window split into two independently-controlled EC panes. The transmittance of these was optimized hourly for a workplane illuminance target while meeting visual comfort constraints, using a least-squares algorithm with linear inequality constraints. Blinds were successively deployed until visual comfort criteria were satisfied. The energy performance of electrochromics proved to be highly dependent on how blinds were controlled. With hourly blind position adjustments, electrochromics showed significantly higher (62percent and 53percent, respectively without and with overhang) lighting energy consumption than clear glass. With a control algorithm designed to better approximate realistic manual control by an occupant, electrochromics achieved significant savings (48percent and 37percent, respectively without and with overhang). In all cases, energy consumption decreased when the workplace illuminance target was increased. In addition, the fraction of time during which the occupant had an unobstructed view of the outside was significantly greater with electrochromics: 10 months out of the year versus a handful of days for the reference case.

  8. THE DAYLIGHTING SOLUTION

    E-Print Network [OSTI]

    Selkowitz, Stephen

    2013-01-01T23:59:59.000Z

    sho\\l'rooms. Use of solar energy for thermal control insolar applications in buildings has focused on providing thermal energy

  9. Daylighting | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you want toworldPowerHome | Department of EnergySolar2 at the

  10. Daylighting | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 Russian NuclearandJunetrack graphics4 Volume 1

  11. Window Daylighting Demo

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your DensityEnergy U.S.-China Electric VehicleCenters | Department ofoftoMay 8,Energy Wind Vision:

  12. Daylighting | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube| Department ofDepartment9-92JanuaryProgram AreasDavis-Bacon

  13. QUEENSLAND UNIVERSITY OF TECHNOLOGY CENTRE FOR MEDICAL, HEALTH AND ENVIRONMENTAL PHYSICS SCHOOL OF PHYSICAL AND CHEMICAL SCIENCES MODIFICATION OF ATRIUM DESIGN TO IMPROVE THERMAL AND DAYLIGHTING PERFORMANCE

    E-Print Network [OSTI]

    Ashley Mabb; Centre For Medical; Environmental Physics

    The inclusion of a central court or atrium within a building is a popular design due to its aesthetic, open appearance. The greater penetration of natural light aids in the reduction in use of artificial lighting during the day. Care must be taken to balance the solar heat gain against the daylight penetration. This balance is critical for the reduction of the electrical energy load of the building, whilst maintaining a high level of comfort for the occupants. In the tropics modifications to atrium building designs are necessary to diminish high elevation direct solar heat gain. Traditionally, shading the window apertures or lowering the transmission through the glazing was used. These solutions limit the view and reduce the light level. The use of angular selective glazing upon atria allows the rejection of high elevation direct sunlight whilst redirecting and therefore improving low elevation skylight penetration. Tilted angular selective glazing used upon adjoining spaces to atria help vertical light in the atrium well to be redirected horizontally deep into the space. These effects reduce overheating which would normally restrict the use of atria in warmer environments as well as improve illumination penetration into adjoining spaces.

  14. The Practical Application of Daylighting Systems as an Effective Energy Conservation Measure with a Reasonable Return on Investment

    E-Print Network [OSTI]

    Othmer, A.

    2002-01-01T23:59:59.000Z

    , allowing them to be on a closer parallel with their larger corporate brothers, who statistically have a lower energy consumption per square foot due to their ability to hire professional energy specialists. As time progressed the ECAP program has.... Light intensity (lumens per square foot) 8. Window Heat Flux in BTU?s per square foot per hour 9. Lighting fixture Heat Flux in BTU?s per square foot per hour 10. Outside ambient temperature 11. Wind speed 12. Wind direction 13. Outside wind...

  15. DAYLIGHTING DIRECTORY 1/1980

    E-Print Network [OSTI]

    ,

    2012-01-01T23:59:59.000Z

    PRESENTATIONS ' ~solar Radiation Data, Natural Lighting, andJUROVICS, S.A. "Solar Radiation Data, Natural Lighting, and

  16. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    with various ‘performance indicators’ becomes ever moreextent that such performance indicators are crude, or the

  17. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    properties of the space, the exterior context, and interiorand exterior shading devices. In the short term, evaluation of spaces

  18. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    illumination values. The luminance of the CIE standardilluminance, radiance and luminance) using sun and skyon the cumu- lative luminance (or radiance) e?ect of (

  19. Daylighting Calculation in DOE-2

    E-Print Network [OSTI]

    Winkelmann, F.C

    2013-01-01T23:59:59.000Z

    8 2.4 Sky LuminanceXBL~829—4589 6. Clear sky luminance distribution as measuredand overcast sky DYL Sky luminance ' y DNSOL I Direct

  20. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

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

  1. Tips for Daylighting with Windows

    SciTech Connect (OSTI)

    Robinson, Alastair; Selkowitz, Stephen

    2013-10-01T23:59:59.000Z

    These guidelines provide an integrated 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-of-thumb, emphasizing “how-to” practical details. References are given to more detailed sources of information, should the reader wish to go further. The design method used in this document emphasizes that building decisions should be made within the context of the whole building as a single functioning system rather than as an assembly of distinct parts. This integrated design approach looks at the ramifications of each individual system decision on the whole building. For example, the decision on glazing selection will have an effect on lighting, mechanical systems, and interior design. Therefore, the entire design team should participate and influence this glazing decision—which typically rests with the architect alone. The benefit of an integrated design approach is a greater chance of success towards long-term comfort and sustained energy savings in the building.

  2. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    section discusses how sustainability and energy-use concernsSustainability and compliance The drive towards sustainable, low-energy

  3. Daylight metrics and energy savings

    E-Print Network [OSTI]

    Mardaljevic, John

    2011-01-01T23:59:59.000Z

    towards sustainable, low-energy buildings has increased thetowards sustainable, low-energy buildings places increasing

  4. daylight | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindey Wind Home Rmckeel's picturecontest Homedatasetdaylight

  5. OpenEI Community - daylight

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRoseConcernsCompany Oil and GasOff

  6. Nanolens Window Coatings for Daylighting

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in Many Devils Wash,Energy NRELNamrata KolachalamCoolingofNanolens

  7. Fractal space-times under the microscope: A Renormalization Group view on Monte Carlo data

    E-Print Network [OSTI]

    Martin Reuter; Frank Saueressig

    2011-10-24T23:59:59.000Z

    The emergence of fractal features in the microscopic structure of space-time is a common theme in many approaches to quantum gravity. In this work we carry out a detailed renormalization group study of the spectral dimension $d_s$ and walk dimension $d_w$ associated with the effective space-times of asymptotically safe Quantum Einstein Gravity (QEG). We discover three scaling regimes where these generalized dimensions are approximately constant for an extended range of length scales: a classical regime where $d_s = d, d_w = 2$, a semi-classical regime where $d_s = 2d/(2+d), d_w = 2+d$, and the UV-fixed point regime where $d_s = d/2, d_w = 4$. On the length scales covered by three-dimensional Monte Carlo simulations, the resulting spectral dimension is shown to be in very good agreement with the data. This comparison also provides a natural explanation for the apparent puzzle between the short distance behavior of the spectral dimension reported from Causal Dynamical Triangulations (CDT), Euclidean Dynamical Triangulations (EDT), and Asymptotic Safety.

  8. Daylight control system, device and method

    DOE Patents [OSTI]

    Paton, John Douglas

    2012-08-28T23:59:59.000Z

    A system and device for and a method of programming and controlling light fixtures is disclosed. A system in accordance with the present invention includes a stationary controller unit that is electrically coupled to the light fixtures. The stationary controller unit is configured to be remotely programmed with a portable commissioning device to automatically control the lights fixtures. The stationary controller unit and the portable commissioning device include light sensors, micro-computers and transceivers for measuring light levels, running programs, storing data and transmitting data between the stationary controller unit and the portable commissioning device. In operation, target light levels selected with the portable commissioning device and the controller unit is remotely programmed to automatically maintain the target level.

  9. Advanced fenestration systems for improved daylight performance

    E-Print Network [OSTI]

    Selkowitz, S.; Lee, E.S.

    1998-01-01T23:59:59.000Z

    technology for dynamic, smart glazings has the potential toSwitchable Glazing: Towards the Development of the Smart

  10. Advanced fenestration systems for improved daylight performance

    E-Print Network [OSTI]

    Selkowitz, S.; Lee, E.S.

    1998-01-01T23:59:59.000Z

    SPIE Optical Materials Technology for Energy Efficiency andon Optical Materials Technology for Energy Efficiency andon Optical Materials Technology for Energy Efficiency and

  11. THE INTEGRATED APPROACH TIPS FOR DAYLIGHTING

    E-Print Network [OSTI]

    and was supported by the Commercial Buildings Partnership (CBP) Program, through the Assistant Secretary for Energy, Andrew McNeil, Cynthia Regnier, and Francis Rubinstein. The Commercial Building Partnerships (CBP to achieve dramatic energy savings in commercial buildings. Through the program, companies and organizations

  12. Daylight control system device and method

    DOE Patents [OSTI]

    Paton, John Douglas

    2007-03-13T23:59:59.000Z

    A system and device for and a method of programming and controlling light fixtures is disclosed. A system in accordance with the present invention includes a stationary controller unit that is electrically coupled to the light fixtures. The stationary controller unit is configured to be remotely programmed with a portable commissioning device to automatically control the lights fixtures. The stationary controller unit and the portable commissioning device include light sensors, micro-computers and transceivers for measuring light levels, running programs, storing data and transmitting data between the stationary controller unit and the portable commissioning device. In operation, target light levels selected with the portable commissioning device and the controller unit is remotely programmed to automatically maintain the target level.

  13. Daylight control system device and method

    DOE Patents [OSTI]

    Paton, John Douglas

    2009-12-01T23:59:59.000Z

    A system and device for and a method of programming and controlling light fixtures is disclosed. A system in accordance with the present invention includes a stationary controller unit that is electrically coupled to the light fixtures. The stationary controller unit is configured to be remotely programmed with a portable commissioning device to automatically control the lights fixtures. The stationary controller unit and the portable commissioning device include light sensors, micro-computers and transceivers for measuring light levels, running programs, storing data and transmitting data between the stationary controller unit and the portable commissioning device. In operation, target light levels selected with the portable commissioning device and the controller unit is remotely programmed to automatically maintain the target level.

  14. Daylighting systems for the Kuwait National Museum

    E-Print Network [OSTI]

    Ahn, Byoungsoo

    2005-08-29T23:59:59.000Z

    sky condition (Southeast gallery, 12:00 PM, Jun 21) .......................................................... 54 50 Iso-contour image under the clear sky and overcast sky condition (Southeast gallery, 12:00 PM, Jun 21...) .......................................................... 55 51 False color image under the clear sky and overcast sky condition (Southeast gallery, 12:00 PM, Dec 21).......................................................... 56 52 Iso-contour image under the clear sky and overcast sky...

  15. Energy 101: Daylighting | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEAWaterCool Roofs Energy 101: Cool Roofs Addthis An

  16. Lighting and Daylighting Basics | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data CenterEnergyGlossary ofHomeJC3 Bulletin Archive LabsAboutAbout UsHomes

  17. List of Daylighting Incentives | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano,LakefrontLighthouse SolarIListsource History

  18. Window Daylighting Demo | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your DensityEnergy U.S.-China Electric VehicleCenters | Department ofoftoMay 8,Energy Wind Vision:Window

  19. Advanced Facades, Daylighting, and Complex Fenestration Systems |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube platform is alwaysISO 50001Energy Efficiency GrantsElectrocatalysts

  20. Window Daylighting Demo | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: SinceDevelopment | Department ofPartnerships ToolkitWasteWho WillWind Programof Energy

  1. Advanced Facades, Daylighting, and Complex Fenestration Systems

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of1 AAccelerated agingDepartmentDevelopment and

  2. Sharing semi-heterogeneous single-user editors for real-time group editing

    E-Print Network [OSTI]

    Lu, Jiajun

    2006-08-16T23:59:59.000Z

    to synchronize states of coauthoring sites. Our concept-proving prototype currently works with familiar, heterogeneous text editors such as GVim and WinEdt that can be adapted to support two basic interfaces, GetState and SetState. The adaption is less expensive...

  3. Energy Blog | Department of Energy

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

    March 12, 2009 Question of the Week: How Do You Feel About the Extended Daylight Saving Time? Share your thoughts on the extended Daylight Saving Time? March 10, 2009 Power Right....

  4. Multiple wavelength time-of-flight sensor based on time-correlated single-photon counting

    E-Print Network [OSTI]

    Buller, Gerald S.

    The optical system was based around a commercially available Meade LX200 catadioptric Schmidt a collection fiber and camera in the image plane of the telescope; and c optical routing: an optical routing demonstrated good performance at ranges of up to 17 km in daylight conditions. Analysis techniques were

  5. Entropic Time

    SciTech Connect (OSTI)

    Caticha, Ariel [Department of Physics, University at Albany-SUNY, Albany, NY 12222 (United States)

    2011-03-14T23:59:59.000Z

    The formulation of quantum mechanics within the framework of entropic dynamics includes several new elements. In this paper we concentrate on one of them: the implications for the theory of time. Entropic time is introduced as a book-keeping device to keep track of the accumulation of changes. One new feature is that, unlike other concepts of time appearing in the so-called fundamental laws of physics, entropic time incorporates a natural distinction between past and future.

  6. Real-Time Refinement of Subthalamic Nucleus Targeting Using Bayesian Decision-Making on the Root Mean Square Measure

    E-Print Network [OSTI]

    Bar-Gad, Izhar

    distance to target (EDT) as the basis for this procedure. Electrode tip location was defined spike sorting-independent nature and tolerance to electrode parame- ters of this Bayesian predictor, can's disease (PD).1­3 During surgery, macroelectrodes are stereotac- tically implanted in specific nuclei

  7. Aug. 2, 2010, 9:00 a.m. EDT Recommend Post: PRESS RELEASE

    E-Print Network [OSTI]

    rentals, electric-car charging stations, and green cleaning all contribute to conserving natural resources

  8. IMC 2010 Review #34A Updated Tuesday 1 Jun 2010 5:15:27pm EDT

    E-Print Network [OSTI]

    Kuzmanovic, Aleksandar

    or work then the users are much more likely to use WiFi than 3G and besides electricty is always available

  9. Fri Oct 1 09:42:58 EDT 2010 Fall 2010 Mathematics Page No. 1 ...

    E-Print Network [OSTI]

    ... 38021 TTh 10:30-11:20 REC 315 Schneider,Andrew James 633 15900 011 .... 8:20 UNIV 003 Hoffman,Andrew Joseph 611 16500 016 23108 Th 8:30- 9:20 .... 9:30-10:20 MATH 175 Bauman,Patricia E 718 26100 008 23234 T 7:30- 8:20 ...

  10. Sat Aug 27 08:33:06 EDT 2011 Fall 2011 Mathematics Page No. 1 ...

    E-Print Network [OSTI]

    ... Mansfield,Steven 845 15200 012 54630 MWF 3:30- 4:20 UNIV 219 Hoffman .... Wen 741 16200 007 23090 TTh 11:30-12:20 PHYS 202 Lau,Joel James 741 .... 23265 MWF 11:30-12:20 EE 129 Bauman,Patricia E 718 26100 007 23244 T ...

  11. #LabChat: Extreme Circumstances, Unique Solutions, June 28 at 1pm EDT |

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sureReportsofDepartmentSeriesDepartmentSmall to Medium SizedJoinDepartment

  12. Time Off

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening a solidSynthesis ofwas publishedThree scientistsDepartmentTime Off

  13. auricular por cochliomyia: Topics by E-print Network

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

    corpse due to its rapid colonization time of fresh remains, active oviposition during daylight... Boatright, Stacy Ann 2010-10-12 2 Fitness Effects of Colonization Time of...

  14. Transmission Services

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

    Return to Daylight Saving Time Posted: 2232015 Effective Date: 382015 This document provides the procedure for reserving and scheduling transmission that spans the time change...

  15. Transient multidimensional second law analysis of solar collectors subjected to time-varying insolation with diffuse components

    SciTech Connect (OSTI)

    Onyegegbu, S.O. (Univ. of Nigeria, Nsukka (Nigeria)); Morhenne, J. (Ruhr-Universitaet, Bochum (Germany))

    1993-01-01T23:59:59.000Z

    This paper presents an unsteady two-dimensional analysis of a flat-plate solar collector subjected to time varying insolation with considerable diffuse components as a better characterization of practical solar collectors. The analysis considers the thermal masses of the absorber, tube, glazing, and the working fluid in the system, as well as the different optical and thermodynamic properties of beam and diffuse radiation. Using two sets of insolation data, one for a near clear day and the other for an overcast day, an exergetic optimization of the system was carried out and flow rates which maximize the total energy output (extracted and accumulated) were determined for flow update periods of once very 30 min, 1 h, and the entire daylight period. The instantaneous optimum flow rates were found to follow the insolation pattern. On a daily basis, the optimum exergetic efficiencies and optimum flow rates were almost independent of the choice of the interval of fluid update, but were about 30% and 10%, respectively, higher for the clear day than for the overcast day.

  16. Energy Blog | Department of Energy

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

    ideas. He discovered the Gulf Stream and invented swim fins. He figured out Daylight Savings Time and developed the lighting rod. Learn more. November 24, 2010 Princeton...

  17. affecting reactor accident: Topics by E-print Network

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

    METEOROLOGY; NUCLEAR POWER PLANTS; P CODES; PWR TYPE REACTORS; RADIATION 2 Does Daylight Savings Time Affect Traffic Accidents? Texas A&M University - TxSpace Summary: This...

  18. DOE Technical Assistance Program

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

    Low pressure discharge (e.g., fluorescent) SSL * Controls Time-based Daylight-based Occupancy-based Individual Addressability * Other Reliability &...

  19. This Month on Energy Savers: February 2011 | Department of Energy

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

    From the Archives: Getting Ready for Spring How Do You Feel About the Extended Daylight Saving Time? Spring into Energy Savings Landscaping with an Eye To Energy Efficiency...

  20. BUILDING TECHNOLOGIES PROGRAM Tax Deduction Qualified Software

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

    interior and exterior lighting controls, such as occupancy sensors, time-clocks, and daylight-sensitive photocells for stepped or continuous dimming of electric lighting and the...

  1. ACCEPTANCE REQUIREMENTS AND HOME ENERGY RATING SYSTEMS

    E-Print Network [OSTI]

    ................................................................................................. NJ-5 NJ.6. Lighting Control Systems ........................................................................................................... NJ-6 NJ.6.1 Automatic Daylighting Controls Acceptance ........................................................................... NJ-9 NJ.6.4 Automatic Time Switch Control Acceptance

  2. Best available copy Removing the Hazard of Fedwire Daylight Overdrafts

    E-Print Network [OSTI]

    E. J. Stevens

    1989-01-01T23:59:59.000Z

    president and economist at the Federal Reserve Bank of Cleveland. The author thanks John Carlson, Charles Carlstrom, Randall Eberts, and William Gavin for their useful comments on earlier drafts of this paper.

  3. Table of Contents 1065 DAYLIGHT OVERDRAFT FEES AND THE

    E-Print Network [OSTI]

    Joseph R. Coyne; Chairman S. David; Frost Griffith; L. Garwood; Donald L. Kohn; J. Virgil Mattingly, Jr.; Michael; J. Prell; Richard Spillenkothen; Edwin M. Truman; Risk Policy

    1995-01-01T23:59:59.000Z

    The Federal Reserve Bulletin is issued monthly under the direction of the staff publications committee. This committee is responsible for opinions expressed except in official statements and signed articles. It is assisted by the Economic Editing Section headed by S. Ellen Dykes, the Graphics Center under the direction of Peter G. Thomas, and Publications Services supervised by Linda C. Kyles. Digitized for FRASER Federal Reserve Bank of St. Louis

  4. Daylight quantum key distribution over 1.6 km

    E-Print Network [OSTI]

    Buttler, W T; Lamoreaux, S K; Morgan, G L; Nordholt, J E; Peterson, C G

    2000-01-01T23:59:59.000Z

    Quantum key distribution (QKD) has been demonstrated over a point-to-point transmission distance brings QKD a step closer to surface-to-satellite and other long-distance applications.

  5. What is Daylight: Understanding the Sky as a

    E-Print Network [OSTI]

    Ahmad, Sajjad

    · 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

  6. CALCULATING INTERIOR DAYLIGHT ILLUMINATION WITH A PROGRAMMABLE HAND CALCULATOR

    E-Print Network [OSTI]

    Bryan, Harvey J.

    2013-01-01T23:59:59.000Z

    within a room utilizing sky luminance distribution functionsis a function of the sky luminance, the window transmission,normal. The CIE Standard Sky luminance function is given by

  7. CALCULATING INTERIOR DAYLIGHT ILLUMINATION WITH A PROGRAMMABLE HAND CALCULATOR

    E-Print Network [OSTI]

    Bryan, Harvey J.

    2013-01-01T23:59:59.000Z

    illumination at any sky luminance distribution functionsis a function the sky luminance, the window transmission,4. 2 1 of Luminance Distribution on Clear Skies 1 11 CIE

  8. Lighting and Daylighting Products and Services | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetterEconomy and Emissions Estimates |Park ServiceUp Georgiaand

  9. CBEI - Enhancing OpenStudio for Airflow and Daylight Modeling

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof Energy FutureDepartmentCAIRS Registration Formof EnergyDepartment

  10. Daylighter Daily Solar Roof Light | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility Database DataDatatechnic InternationalMontana:Heights,

  11. #LabChat: Science of the Very Fast and Very Small, June 11 at 2 pm EDT |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengtheningWildfiresImpurityRotation;ReportLANL HIPAA#CleanTechNow:

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    overhead electrical lighting and for comparison to existingthe overhead electrical lighting in comparison to a code 4Recommended Lighting Levels: An International Comparison."

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2011-01-01T23:59:59.000Z

    overhead electrical lighting and for comparison to existingthe overhead electrical lighting in comparison to a code 4Recommended Lighting Levels: An International Comparison."

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    performance,” or “energy efficient” design. This approach isstandards for the design of energy efficient buildings (standards for the design of energy efficient buildings (e.g.

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    Society of North America. Luminance ratio limits; ch. 11,UGR) Vertical illuminance Average window luminance Maximumwindow luminance Ratio of average window luminance to

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2011-01-01T23:59:59.000Z

    Society of North America. Luminance ratio limits; ch. 11,UGR) Vertical illuminance Average window luminance Maximumwindow luminance Ratio of average window luminance to

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    facade) and average sky luminance (measured from the back ofsky conditions (January 7, 2007), average window luminancessky conditions) with falsecolor tone mapping (yellow indicates luminance

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2011-01-01T23:59:59.000Z

    facade) and average sky luminance (measured from the back ofsky conditions (January 7, 2007), average window luminancessky conditions) with falsecolor tone mapping (yellow indicates luminance

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    facade) and average sky luminance (measured from the back ofsky conditions (January 7, 2007), average window luminancessky conditions (August 26, 2006), measured average window luminances

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    Construction: Green Building Design and Delivery, SecondFederal Building. U.S. Green Building Council (2009). LEEDReference guide. US Green Building Council. (2006). LEED-

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2011-01-01T23:59:59.000Z

    Federal Building. U.S. Green Building Council (2009). LEEDReference guide. US Green Building Council. (2006). LEED-www.usgbc.org/LEED/ U.S. Green Building Council (from David

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    Whole-floor effective lighting power density (LPD) for oneto an installed lighting power density considered necessarythat has the maximum Lighting Power Density (LPD) allowed by

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2011-01-01T23:59:59.000Z

    Whole-floor effective lighting power density (LPD) for oneto an installed lighting power density considered necessarythat has the maximum Lighting Power Density (LPD) allowed by

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2012-01-01T23:59:59.000Z

    the integration of architecture and sustainable engineeringthe integration of architecture and sustainable engineeringArchitecture, UC Berkeley 2011 vi   http://escholarship.org/uc/item/7q35m7nq List of figures Figure 1.1 Example “sustainable”

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

    E-Print Network [OSTI]

    Konis, Kyle Stas

    2011-01-01T23:59:59.000Z

    the integration of architecture and sustainable engineeringthe integration of architecture and sustainable engineeringArchitecture University of California, Berkeley Professor Charles C. Benton, Chair Commercial office buildings promoted as “sustainable,” “

  6. Evaluating the effects of resources and solvability on burglary detection

    E-Print Network [OSTI]

    Coupe, Timothy

    2014-12-20T23:59:59.000Z

    . These are commonly daylight offences involving elderly householders who, despite meeting offenders, are rarely able to provide suspect descriptions that lead to arrest (Coupe & Blake, 2006). Mis-application of resources may also reflect workload variation, which... uncertainties as to the time of the burglary event at some unoccupied dwellings, daylight / darkness data could be specified for 492 cases. Excepting daylight/darkness data, there were 573 cases where the majority of questioned were answered. Sample sizes...

  7. Lightweight Time Modeling in Timed Creol

    E-Print Network [OSTI]

    Bjørk, Joakim; Owe, Olaf; Schlatte, Rudolf; 10.4204/EPTCS.36.4

    2010-01-01T23:59:59.000Z

    Creol is an object-oriented modeling language in which inherently concurrent objects exchange asynchronous method calls. The operational semantics of Creol is written in an actor-based style, formulated in rewriting logic. The operational semantics yields a language interpreter in the Maude system, which can be used to analyze models. Recently, Creol has been applied to the modeling of systems with radio communication, such as sensor systems. With radio communication, messages expire and, if sent simultaneously, they may collide in the air. In order to capture these and other properties of distributed systems, we extended Creol's operational semantics with a notion of time. We exploit the framework of a language interpreter to use a lightweight notion of time, in contrast to that needed for a general purpose specification language. This paper presents a timed extension of Creol, including the semantics and the implementation strategy, and discusses its properties using an extended example. The approach can be...

  8. Noncommutative Two Time Physics

    E-Print Network [OSTI]

    W. Chagas-Filho

    2006-05-10T23:59:59.000Z

    We present a classical formalism describing two-time physics with Abelian canonical gauge field backgrounds. The formalism can be used as a starting point for the construction of an interacting quantized two-time physics theory in a noncommutative soace-time.

  9. Quantum Operation Time Reversal

    SciTech Connect (OSTI)

    Crooks, Gavin E.

    2008-03-25T23:59:59.000Z

    The dynamics of an open quantum system can be described by a quantum operation: A linear, complete positive map of operators. Here, I exhibit a compact expression for the time reversal of a quantum operation, which is closely analogous to the time reversal of a classical Markov transition matrix. Since open quantum dynamics are stochastic, and not, in general, deterministic, the time reversal is not, in general, an inversion of the dynamics. Rather, the system relaxes toward equilibrium in both the forward and reverse time directions. The probability of a quantum trajectory and the conjugate, time reversed trajectory are related by the heat exchanged with the environment.

  10. The Potential of Energy Management and Control Systems for Real-Time Electricity Pricing Programs

    E-Print Network [OSTI]

    Akbari, H.; Heinemeier, K. E.

    1990-01-01T23:59:59.000Z

    and Control System EMCSs are popular in commercial buildings for many reasons [EPRI, 19861. The rapid development and evolution in the computer industry has made more powerful EMCSs available at a lower cost. In new commercial buildings and a majority...-management strategies implemented by EMCSs are: programmed stop and start, duty cycling, demand limiting, optimal stop and start, plant optimization, economizer control, thermal energy storage, and daylighting [EPRI, 1985 & 1986; NCAEC 19871. In addition...

  11. Matter: Space without Time

    E-Print Network [OSTI]

    Yousef Ghazi-Tabatabai

    2012-11-19T23:59:59.000Z

    While Quantum Gravity remains elusive and Quantum Field Theory retains the interpretational difficulties of Quantum Mechanics, we have introduced an alternate approach to the unification of particles, fields, space and time, suggesting that the concept of matter as space without time provides a framework which unifies matter with spacetime and in which we anticipate the development of complete theories (ideally a single unified theory) describing observed 'particles, charges, fields and forces' solely with the geometry of our matter-space-time universe.

  12. Manage Your Time 

    E-Print Network [OSTI]

    White, Lynn

    2000-06-27T23:59:59.000Z

    , you expect unused time to come around again, so that when the same opportunities appear you will be wiser about how to use it. Consider how your cultural background af_fects the w ay you plan and manage time. W *Both cited in Bauer, J. It?s Time.... Effective time management means decid- ing which activity should be done from all the possibilities available, and then doing it. It is a matter of setting priorities. Deciding which jobs are most important and working on those may be better than doing less...

  13. Intrinsic Time Quantum Geometrodynamics

    E-Print Network [OSTI]

    Eyo Eyo Ita III; Chopin Soo; Hoi-Lai Yu

    2015-02-06T23:59:59.000Z

    Quantum Geometrodynamics with intrinsic time development and momentric variables is presented. An underlying SU(3) group structure at each spatial point regulates the theory. The intrinsic time behavior of the theory is analyzed, together with its ground state and primordial quantum fluctuations. Cotton-York potential dominates at early times when the universe was small; the ground state naturally resolves Penrose's Weyl Curvature Hypothesis, and thermodynamic and gravitational `arrows of time' point in the same direction. Ricci scalar potential corresponding to Einstein's General Relativity emerges as a zero-point energy contribution. A new set of fundamental commutation relations without Planck's constant emerges from the unification of Gravitation and Quantum Mechanics.

  14. Intrinsic Time Quantum Geometrodynamics

    E-Print Network [OSTI]

    Ita, Eyo Eyo; Yu, Hoi-Lai

    2015-01-01T23:59:59.000Z

    Quantum Geometrodynamics with intrinsic time development and momentric variables is presented. An underlying SU(3) group structure at each spatial point regulates the theory. The intrinsic time behavior of the theory is analyzed, together with its ground state and primordial quantum fluctuations. Cotton-York potential dominates at early times when the universe was small; the ground state naturally resolves Penrose's Weyl Curvature Hypothesis, and thermodynamic and gravitational `arrows of time' point in the same direction. Ricci scalar potential corresponding to Einstein's General Relativity emerges as a zero-point energy contribution. A new set of fundamental canonical commutation relations without Planck's constant emerges from the unification of Gravitation and Quantum Mechanics.

  15. Developing Improved Travel Time Reliability Measures For Real-time

    E-Print Network [OSTI]

    Bertini, Robert L.

    reliability Use for prioritizing improvements Outline #12; 95th Percentile Travel Time Travel Time Index: mean travel time divided by free flow travel time Buffer Index: difference between 95th percentile travel time and mean travel time, divided by mean travel time Planning Time Index: 95th percentile

  16. Transmission Services Bulletin

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

    Standard Time On the first Sunday in November Transmission Services sets clocks from Daylight Savings Time (PD) back to Standard Time (PS). At 02:00 the time becomes 01:00. In...

  17. Probabilistic time-series

    E-Print Network [OSTI]

    Roweis, Sam

    SCIA 2003 Tutorial: Hidden Markov Models Sam Roweis, University of Toronto June 29, 2003 Probabilistic Generative Models for Time Series #15; Stochastic models for time-series: y 1 ; y 2 ; : : : ; y #15; Add noise to make the system stochastic: p(y t jy t 1 ;y t 2 ; : : : ;y t k ) #15; Markov models

  18. Is Time Inhomogeneous ?

    E-Print Network [OSTI]

    S. Davood Sadatian

    2014-05-08T23:59:59.000Z

    In this article, we discuss probability of inhomogeneous time in high or low energy scale of physics. Consequently, the possibility was investigated of using theories such as varying speed of light (VSL) and fractal mathematics to build a framework within which answers can be found to some of standard cosmological problems and physics theories on the basis of time non-homogeneity.

  19. The Measurement of Time

    E-Print Network [OSTI]

    A. Boyarsky; P Gora

    2007-05-07T23:59:59.000Z

    We present a definition of time measurement based on high energy photons and the fundamental length scale, and show that, for macroscopic time, it is in accord with the Lorentz transformation of special relativity. To do this we define observer in a different way than in special relativity.

  20. Emergence of Time

    E-Print Network [OSTI]

    M. Heller; W. Sasin

    1997-11-17T23:59:59.000Z

    In the groupoid approach to noncommutative quantization of gravity, gravitational field is quantized in terms of a C*-algebra A of complex valued funcions on a groupoid G (with convolution as multiplication). In the noncommutative quantum gravitational regime the concepts of space and time are meaningless. We study the "emergence of time" in the transition process from the noncommutative regime to the standard space-time geometry. Precise conditions are specified under which modular groups of the von Neumann algebra generated by A can be defined. These groups are interpreted as a state depending time flow. If the above conditions are further refined one obtains a state independent time flow. We show that quantum gravitational dynamics can be expressed in terms of modular groups.

  1. Environment Induced Time Arrow

    E-Print Network [OSTI]

    Janos Polonyi

    2012-06-25T23:59:59.000Z

    The spread of the time arrows from the environment to an observed subsystem is followed within a harmonic model. A similarity is pointed out between irreversibility and a phase with spontaneously broken symmetry. The causal structure of interaction might be lost in the irreversible case, as well. The Closed Time Path formalism is developed for classical systems and shown to handle the time arrow problem in a clear and flexible manner. The quantum case is considered, as well, and the common origin of irreversibility and decoherence is pointed out.

  2. Time, energy & form

    E-Print Network [OSTI]

    McInnis, Martha Jane

    1982-01-01T23:59:59.000Z

    Physical manifestations of time occur in natural forms of all sizes. Architectural form serves as shelter while providing a built envelope of human life, simultaneously influencing and influenced by energetic activities ...

  3. Drug Retention Times

    SciTech Connect (OSTI)

    Center for Human Reliability Studies

    2007-05-01T23:59:59.000Z

    The purpose of this monograph is to provide information on drug retention times in the human body. The information provided is based on plausible illegal drug use activities that might be engaged in by a recreational drug user

  4. Drug Retention Times

    SciTech Connect (OSTI)

    Center for Human Reliability Studies

    2007-05-01T23:59:59.000Z

    The purpose of this monograph is to provide information on drug retention times in the human body. The information provided is based on plausible illegal drug use activities that might be engaged in by a recreational drug user.

  5. BONNEVILLE POWER ADMINISTRATION FOR IMMEDIATE RELEASE

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

    controlling lights and air conditioning systems. Other potential applications include daylight harvesting, daylighting system commissioning, occupancy logging and daylight logging,...

  6. 2.1E Supplement

    E-Print Network [OSTI]

    Winkelmann, F.C.

    2010-01-01T23:59:59.000Z

    Factor Summary L V - L -- Daylight Factor Summary L V - M --Lighting Energy Reduction B y Daylight, Energy Reduction By Daylight, Building LS-J Daylight

  7. Time-Encoded Imagers.

    SciTech Connect (OSTI)

    Marleau, Peter; Brubaker, Erik

    2014-11-01T23:59:59.000Z

    This report provides a short overview of the DNN R&D funded project, Time-Encoded Imagers. The project began in FY11 and concluded in FY14. The Project Description below provides the overall motivation and objectives for the project as well as a summary of programmatic direction. It is followed by a short description of each task and the resulting deliverables.

  8. Bootstrapping Time Dilation Decoherence

    E-Print Network [OSTI]

    Cisco Gooding; William G. Unruh

    2015-03-18T23:59:59.000Z

    We present a general relativistic model of a spherical shell of matter with a perfect fluid on its surface coupled to an internal oscillator, which generalizes a model recently introduced by the authors to construct a self-gravitating interferometer [1]. The internal oscillator evolution is defined with respect to the local proper time of the shell, allowing the oscillator to serve as a local clock that ticks differently depending on the shell's position and momentum. A Hamiltonian reduction is performed on the system, and an approximate quantum description is given to the reduced phase space. If we focus only on the external dynamics, we must trace out the clock degree of freedom, and this results in a form of intrinsic decoherence that shares some features with a proposed "universal" decoherence mechanism attributed to gravitational time dilation [2]. We show that the proposed decoherence remains present in the (gravity-free) limit of flat spacetime, indicating that the effect can be attributed entirely to proper time differences, and thus is not necessarily related to gravity. Finally, we point out a way to bootstrap the gravitational contribution to the time dilation decoherence by including self-interaction, and comment on how this can be considered a fundamentally gravitational intrinsic decoherence effect.

  9. Time and Attendance Reporting

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2004-10-22T23:59:59.000Z

    DOE O 535.1 establishes the Department's requirements and responsibilities governing time and attendance reporting. The purpose of this revision is to reflect the transition of payroll processing from the Capital Accounting Center to the Defense Finance and Accounting System. Cancels DOE O 3600.1B. Canceled by DOE O 322.1C.

  10. Time reversal communication system

    DOE Patents [OSTI]

    Candy, James V. (Danville, CA); Meyer, Alan W. (Danville, CA)

    2008-12-02T23:59:59.000Z

    A system of transmitting a signal through a channel medium comprises digitizing the signal, time-reversing the digitized signal, and transmitting the signal through the channel medium. The channel medium may be air, earth, water, tissue, metal, and/or non-metal.

  11. Tevatron injection timing

    SciTech Connect (OSTI)

    Saritepe, S.; Annala, G.

    1993-06-01T23:59:59.000Z

    Bunched beam transfer from one accelerator to another requires coordination and synchronization of many ramped devices. During collider operation timing issues are more complicated since one has to switch from proton injection devices to antiproton injection devices. Proton and antiproton transfers are clearly distinct sequences since protons and antiprotons circulate in opposite directions in the Main Ring (MR) and in the Tevatron. The time bumps are different, the kicker firing delays are different, the kickers and lambertson magnets are different, etc. Antiprotons are too precious to be used for tuning purposes, therefore protons are transferred from the Tevatron back into the Main Ring, tracing the path of antiprotons backwards. This tuning operation is called ``reverse injection.`` Previously, the reverse injection was handled in one supercycle. One batch of uncoalesced bunches was injected into the Tevatron and ejected after 40 seconds. Then the orbit closure was performed in the MR. In the new scheme the lambertson magnets have to be moved and separator polarities have to be switched, activities that cannot be completed in one supercycle. Therefore, the reverse injection sequence was changed. This involved the redefinition of TVBS clock event $D8 as MRBS $D8 thus making it possible to inject 6 proton batches (or coalesced bunches) and eject them one at a time on command, performing orbit closure each time in the MR. Injection devices are clock event driven. The TCLK is used as the reference clock. Certain TCLK events are triggered by the MR beam synchronized clock (MRBS) events. Some delays are measured in terms of MRBS ticks and MR revolutions. See Appendix A for a brief description of the beam synchronized clocks.

  12. Genepool Time Heatmaps

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.Newof EnergyFundingGene Controls FloweringJavaGenepool Time

  13. Bootstrapping Time Dilation Decoherence

    E-Print Network [OSTI]

    Gooding, Cisco

    2015-01-01T23:59:59.000Z

    We present a general relativistic model of a spherical shell of matter with a perfect fluid on its surface coupled to an internal oscillator, which generalizes a model recently introduced by the authors to construct a self-gravitating interferometer [1]. The internal oscillator evolution is defined with respect to the local proper time of the shell, allowing the oscillator to serve as a local clock that ticks differently depending on the shell's position and momentum. A Hamiltonian reduction is performed on the system, and an approximate quantum description is given to the reduced phase space. If we focus only on the external dynamics, we must trace out the clock degree of freedom, and this results in a form of intrinsic decoherence that shares some features with a proposed "universal" decoherence mechanism attributed to gravitational time dilation [2]. We show that the proposed decoherence remains present in the (gravity-free) limit of flat spacetime, indicating that the effect can be attributed entirely to ...

  14. HAWC Timing Calibration

    E-Print Network [OSTI]

    Huentemeyer, Petra; Dingus, Brenda

    2009-01-01T23:59:59.000Z

    The High-Altitude Water Cherenkov (HAWC) Experiment is a second-generation highsensitivity gamma-ray and cosmic-ray detector that builds on the experience and technology of the Milagro observatory. Like Milagro, HAWC utilizes the water Cherenkov technique to measure extensive air showers. Instead of a pond filled with water (as in Milagro) an array of closely packed water tanks is used. The event direction will be reconstructed using the times when the PMTs in each tank are triggered. Therefore, the timing calibration will be crucial for reaching an angular resolution as low as 0.25 degrees.We propose to use a laser calibration system, patterned after the calibration system in Milagro. Like Milagro, the HAWC optical calibration system will use ~1 ns laser light pulses. Unlike Milagro, the PMTs are optically isolated and require their own optical fiber calibration. For HAWC the laser light pulses will be directed through a series of optical fan-outs and fibers to illuminate the PMTs in approximately one half o...

  15. Data:E639a5d4-4f04-4a19-ae2f-e206be9c2e87 | Open Energy Information

    Open Energy Info (EERE)

    the period starting 9:00 a.m. and ending 10:00 p.m. Central Standard Time or Central Daylight Savings Time, whichever is applicable, of each day except all hours on Saturday,...

  16. Data:676df02a-b655-4e62-a245-09a54793af6b | Open Energy Information

    Open Energy Info (EERE)

    of the year when Eastern Standard Time is in effect, and 10:00am-9:00pm when Eastern Daylight Savings time is in effect, Monday through Friday, including holidays falling on...

  17. Data:699deb08-94f3-4a8f-80eb-8a49d74961ad | Open Energy Information

    Open Energy Info (EERE)

    of the year when Eastern Standard Time is in effect, and 9:00am-10:00pm when Eastern Daylight Savings time is in effect, Monday through Friday, including holidays falling on...

  18. Data:6b84c57c-0d42-409f-8ee9-3a8a6668a361 | Open Energy Information

    Open Energy Info (EERE)

    of the year when Eastern Standard Time is in effect, and 9:00am-10:00pm when Eastern Daylight Savings time is in effect, Monday through Friday, including holidays falling on...

  19. Final Exam Location and Time

    E-Print Network [OSTI]

    Final Exam Location and Time. Math 162 Fall 2001. Date: Wednesday December 12, 2001. Time: 7:00 pm -9:00 pm. Location: Lambert Fieldhouse ...

  20. Final Exam Location and Time

    E-Print Network [OSTI]

    Final Exam Location and Time. Math 161 Fall 2001. Date: Friday December 14, 2001. Time: 8:00 am -10:00 am. Location: Lambert Fieldhouse ...

  1. Deciding Timed Bisimulation for Timed Automata Using Zone Valuation Graph

    E-Print Network [OSTI]

    Prasad, Sanjiva

    Deciding Timed Bisimulation for Timed Automata Using Zone Valuation Graph Shibashis Guha, Chinmay was first proved to be decidable for timed automata by Cerans using a product construction method on region graph. Several other methods have been proposed in the literature since then for decid- ing timed

  2. Time encoded radiation imaging

    DOE Patents [OSTI]

    Marleau, Peter; Brubaker, Erik; Kiff, Scott

    2014-10-21T23:59:59.000Z

    The various technologies presented herein relate to detecting nuclear material at a large stand-off distance. An imaging system is presented which can detect nuclear material by utilizing time encoded imaging relating to maximum and minimum radiation particle counts rates. The imaging system is integrated with a data acquisition system that can utilize variations in photon pulse shape to discriminate between neutron and gamma-ray interactions. Modulation in the detected neutron count rates as a function of the angular orientation of the detector due to attenuation of neighboring detectors is utilized to reconstruct the neutron source distribution over 360 degrees around the imaging system. Neutrons (e.g., fast neutrons) and/or gamma-rays are incident upon scintillation material in the imager, the photons generated by the scintillation material are converted to electrical energy from which the respective neutrons/gamma rays can be determined and, accordingly, a direction to, and the location of, a radiation source identified.

  3. Real time automated inspection

    DOE Patents [OSTI]

    Fant, K.M.; Fundakowski, R.A.; Levitt, T.S.; Overland, J.E.; Suresh, B.R.; Ulrich, F.W.

    1985-05-21T23:59:59.000Z

    A method and apparatus are described relating to the real time automatic detection and classification of characteristic type surface imperfections occurring on the surfaces of material of interest such as moving hot metal slabs produced by a continuous steel caster. A data camera transversely scans continuous lines of such a surface to sense light intensities of scanned pixels and generates corresponding voltage values. The voltage values are converted to corresponding digital values to form a digital image of the surface which is subsequently processed to form an edge-enhanced image having scan lines characterized by intervals corresponding to the edges of the image. The edge-enhanced image is thresholded to segment out the edges and objects formed by the edges by interval matching and bin tracking. Features of the objects are derived and such features are utilized to classify the objects into characteristic type surface imperfections. 43 figs.

  4. Real time automated inspection

    DOE Patents [OSTI]

    Fant, Karl M. (Minneapolis, MN); Fundakowski, Richard A. (Saint Paul, MN); Levitt, Tod S. (Minneapolis, MN); Overland, John E. (Plymouth, MN); Suresh, Bindinganavle R. (New Brighton, MN); Ulrich, Franz W. (Minneapolis, MN)

    1985-01-01T23:59:59.000Z

    A method and apparatus relating to the real time automatic detection and classification of characteristic type surface imperfections occurring on the surfaces of material of interest such as moving hot metal slabs produced by a continuous steel caster. A data camera transversely scans continuous lines of such a surface to sense light intensities of scanned pixels and generates corresponding voltage values. The voltage values are converted to corresponding digital values to form a digital image of the surface which is subsequently processed to form an edge-enhanced image having scan lines characterized by intervals corresponding to the edges of the image. The edge-enhanced image is thresholded to segment out the edges and objects formed by the edges are segmented out by interval matching and bin tracking. Features of the objects are derived and such features are utilized to classify the objects into characteristic type surface imperfections.

  5. High-Energy, Pulsed-Laser Diagnostics for Real-Time Measurements of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGEND D e e p p a a r r t tDaylighting(June 2010)

  6. GOVERNMENT FUNDING FOR ADVANCED TECHNOLOGY, A GUIDE TO APPLYING FOR GOVERNMENT GRANTS

    E-Print Network [OSTI]

    Thompson, Anne

    , Consulting Geologist Date: September 30, 2010 Time: 9:00 am - 4:00 pm EDT Place: NRCCE Building, Morgantown of Energy Oil and Natural Gas, CO2 Sequestration, and Geothermal programs; Oklahoma Economic Development, a consulting geologist, has over twenty years of experience in the Department of Energy Oil and Natural Gas

  7. Targeted Protein Degradation of Outer Membrane Decaheme Cytochrome MtrC Metal Reductase in Shewanella oneidensis MR-1 Measured Using Biarsenical Probe CrAsH-EDT2

    SciTech Connect (OSTI)

    Xiong, Yijia; Chen, Baowei; Shi, Liang; Fredrickson, Jim K.; Bigelow, Diana J.; Squier, Thomas C.

    2011-10-14T23:59:59.000Z

    Development of efficient microbial biofuel cells requires an ability to exploit interfacial electron transfer reactions to external electron acceptors, such as metal oxides; such reactions occur in the facultative anaerobic gram-negative bacterium Shewanella oneidensis MR-1 through the catalytic activity of the outer membrane decaheme c-type cytochrome MtrC. Central to the utility of this pathway to synthetic biology is an understanding of cellular mechanisms that maintain optimal MtrC function, cellular localization, and renewal by degradation and resynthesis. In order to monitor trafficking to the outer membrane, and the environmental sensitivity of MtrC, we have engineered a tetracysteine tag (i.e., CCPGCC) at its C-terminus that permits labeling by the cell impermeable biarsenical fluorophore, carboxy-FlAsH (CrAsH) of MtrC at the surface of living Shewanella oneidensis MR-1 cells. In comparison, the cell permeable reagent FlAsH permits labeling of the entire population of MtrC, including proteolytic fragments resulting from incorrect maturation. We demonstrate specific labeling by CrAsH of engineered MtrC which is dependent on the presence of a functional type-2 secretion system (T2S), as evidenced by T2S system gspD or gspG deletion mutants which are incapable of CrAsH labeling. Under these latter conditions, MtrC undergoes proteolytic degradation to form a large 35-38 kDa fragment; this degradation product is also resolved during normal turnover of the CrAsH-labeled MtrC protein. No MtrC protein is released into the medium during turnover, suggesting the presence of cellular turnover systems involving MtrC reuptake and degradation. The mature MtrC localized on the outer membrane is a long-lived protein, with a turnover rate of 0.043 hr-1 that is insensitive to O2 concentration. Maturation of MtrC is relatively inefficient, with substantial rates of turnover of the immature protein prior to export to the outer membrane (i.e., 0.028 hr-1) that are consistent with the inherent complexity associated with correct heme insertion and acylation of MtrC that occurs in the periplasm prior to its targeting to the outer membrane. These latter results suggest that MtrC protein trafficking to the outer membrane and its subsequent degradation are tightly regulated, which is consistent with cellular processing pathways that target MtrC to extracellular structures and their possible role in promoting electron transfer from Shewanella to extracellular acceptors.

  8. Don't swallow these innovation nostrums From Monday's Globe and Mail Published on Friday, Aug. 27, 2010 7:11PM EDT

    E-Print Network [OSTI]

    Pulfrey, David L.

    massive advantages ­ research and development in resource-based industries and agriculture will increase spending on "curiosity driven" research. This zombie idea just won't die. Most universities and colleges unskilled manufacturing jobs, advanced research labs and family operated computer service shops. Of course

  9. Loreen Meyer, King Philip HS biology teacher. (Staff photo by MARK MONDAY JULY 12, 2010 Last modified: Monday, July 12, 2010 2:15 AM EDT

    E-Print Network [OSTI]

    Hibbett, David S.

    Loreen Meyer, King Philip HS biology teacher. (Staff photo by MARK STOCKWELL) Print Page MONDAY-on activities and lab work. So says King Philip Regional High School science teacher Loreen Meyer, who now sits atop the food chain of her peers. Meyer recently became president of the Massachusetts Association

  10. SLH Timing Belt Powertrain

    SciTech Connect (OSTI)

    Schneider, Abe

    2014-04-09T23:59:59.000Z

    The main goal of this proposal was to develop and test a novel powertrain solution for the SLH hydroEngine?, a low-cost, efficient low-head hydropower technology. Nearly two-thirds of U.S. renewable electricity is produced by hydropower (EIA 2010). According to the U.S. Department of Energy; this amount could be increased by 50% with small hydropower plants, often using already-existing dams (Hall 2004). There are more than 80,000 existing dams, and of these, less than 4% generate power (Blankinship 2009). In addition, there are over 800 irrigation districts in the U.S., many with multiple, non-power, low-head drops. These existing, non-power dams and irrigation drops could be retrofitted to produce distributed, baseload, renewable energy with appropriate technology. The problem is that most existing dams are low-head, or less than 30 feet in height (Ragon 2009). Only about 2% of the available low-head hydropower resource in the U.S. has been developed, leaving more than 70 GW of annual mean potential low-head capacity untapped (Hall 2004). Natel Energy, Inc. is developing a low-head hydropower turbine that operates efficiently at heads less than 6 meters and is cost-effective for deployment across multiple low-head structures. Because of the unique racetrack-like path taken by the prime-movers in the SLH, a flexible powertrain is required. Historically, the only viable technological solution was roller chain. Despite the having the ability to easily attach blades, roller chain is characterized by significant drawbacks, including high cost, wear, and vibration from chordal action. Advanced carbon-#12;fiber-reinforced timing belts have been recently developed which, coupled with a novel belt attachment system developed by Natel Energy, result in a large reduction in moving parts, reduced mass and cost, and elimination of chordal action for increased fatigue life. The work done in this project affirmatively addressed each of the following 3 major uncertainties concerning a timing-belt based hydroEngine ?powertrain: 1. Can a belt handle the high torques and power loads demanded by the SLH? (Yes.) 2. Can the SLH blades be mounted to belt with a connection that can withstand the loads encountered in operation? (Yes.) 3. Can the belt, with blade attachments, live through the required cyclic loading? (Yes.) The research adds to the general understanding of sustainable small hydropower systems by using innovative system testing to develop and demonstrate performance of a novel powertrain solution, enabling a new type of hydroelectric turbine to be commercially developed. The technical effectiveness of the methods investigated has been shown to be positive through an extensive design and testing process accommodating many constraints and goals, with a major emphasis on high cycle fatigue life. Economic feasibility of the innovations has been demonstrated through many iterations of design for manufacturability and cost reduction. The project is of benefit to the public because it has helped to develop a solution to a major problem -- despite the large available potential for new low-head hydropower, high capital costs and high levelized cost of electricity (LCOE) continue to be major barriers to project development. The hydroEngine? represents a significant innovation, leveraging novel fluid mechanics and mechanical configuration to allow lower-cost turbine manufacture and development of low head hydropower resources.

  11. Turbo Space-Time Codes with Time Varying Linear Transformations

    E-Print Network [OSTI]

    Haimovich, Alexander

    1 Turbo Space-Time Codes with Time Varying Linear Transformations Hangjun Chen and Alexander 07102 Email: {hangjun.chen; alexander.m.haimovich}@njit.edu Abstract Turbo space-time codes with symbols in this paper. It is shown that turbo codes with TVLT achieve full diversity gain and do not require exhaustive

  12. 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]

    Smith, Brooke Ray

    2007-01-01T23:59:59.000Z

    Part I: A Synthesis of Lessons Learned from Existing Urbaneffective? and 4) what lessons learned can apply to a Sanmonitoring, and lessons learned). Results: Case Study

  13. 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]

    Smith, Brooke Ray

    2007-01-01T23:59:59.000Z

    evaluation of an urban stream restoration project (Baxtercan be equated with stream restoration is debatable. Someprofound form of stream restoration, recreating a surface

  14. The LCLS Timing Event System

    SciTech Connect (OSTI)

    Dusatko, John; Allison, S.; Browne, M.; Krejcik, P.; /SLAC

    2012-07-23T23:59:59.000Z

    The Linac Coherent Light Source requires precision timing trigger signals for various accelerator diagnostics and controls at SLAC-NAL. A new timing system has been developed that meets these requirements. This system is based on COTS hardware with a mixture of custom-designed units. An added challenge has been the requirement that the LCLS Timing System must co-exist and 'know' about the existing SLC Timing System. This paper describes the architecture, construction and performance of the LCLS timing event system.

  15. Webinar March 24: National Hydrogen Safety Training Resource...

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

    titled "National Hydrogen Safety Training Resource for Emergency Responders" on Tuesday, March 24, from 12 to 1 p.m. Eastern Daylight Time. This webinar will describe a new, free,...

  16. DOE Announces Webinars on Getting Buy-In for Energy Efficiency...

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

    Financial Decision-makers" on Tuesday, October 1, from 3:00 p.m. to 4:00 p.m. Eastern Daylight Time. Better Buildings Challenge partners USAA Real Estate Company, University of...

  17. Saluting a Great American Scientist-Founder This Thanksgiving...

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

    ideas. He discovered the Gulf Stream and invented swim fins. He figured out Daylight Savings Time and developed the lighting rod. We can thank him for the Glass Armonica...

  18. Data:2ff0a21a-0371-46f8-8da0-b30b702cfffe | Open Energy Information

    Open Energy Info (EERE)

    by the City of Austin. Street Lighting unit burning time is limited to dusk to daylight (approximately 4,400 hrs. per year). CHARACTER OF SERVICE: 120240 Volts, AC, as...

  19. Spring Forward and Start Saving Money | Department of Energy

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

    has begun, and as millions around the world prepare to "spring forward" one hour for Daylight Saving Time on March 10th, you might consider this as an opportunity to also save...

  20. Data:D60e5fe4-2723-479d-b16b-9fabe37583c1 | Open Energy Information

    Open Energy Info (EERE)

    by the City of Austin. Street Lighting unit burning time is limited to dusk to daylight (approximately 4,400 hrs. per year). CHARACTER OF SERVICE: 120240 Volts, AC, as...

  1. Energy Blog | Department of Energy

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

    on the market. Learn more. November 7, 2011 Halloween (+7 Days) Now that we're off Daylight Savings Time (finally) and had our extra hour's rest this past weekend, most of us...

  2. Question of the Week: How Are You Observing Earth Hour? | Department...

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

    Sunday, people across the country will spring forward an hour, marking the start to Daylight Saving Time. | Photo courtesy of iStock Photo, WoodyUpstate. Top 8 Things You Didn't...

  3. Street and Parking Facility Lighting Retrofit Financial Analysis Tool Webinar

    Broader source: Energy.gov [DOE]

    DOE will present a live webinar titled "Using the Street and Parking Facility Lighting Retrofit Financial Analysis Tool" on Thursday, August 22, from 1:00 p.m. to 2:00 p.m. Eastern Daylight Time....

  4. Water World: Success Stories and Tools for Water Use Reduction...

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

    Your Building Portfolio" on Tuesday, January 6, from 3:00 p.m. to 4:00 p.m. Eastern Daylight Time. Did you know the Better Buildings Challenge is diving into the world of water...

  5. Hydrogen Station Test Device Design and Fabrication | Department...

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

    from potential suppliers are due no later than October 8, 2014, at 8:00 p.m. Eastern Daylight Time. Device requirements and additional information can be found at the at the...

  6. Data:Acb8608d-9d8c-452c-a65f-0f3d6379a63f | Open Energy Information

    Open Energy Info (EERE)

    by the City of Austin. Street Lighting unit burning time is limited to dusk to daylight (approximately 4,400 hrs. per year). CHARACTER OF SERVICE: 120240 Volts, AC, as...

  7. Data:2d638677-4557-40d1-89df-7d6a59d466fd | Open Energy Information

    Open Energy Info (EERE)

    by the City of Austin. Street Lighting unit burning time is limited to dusk to daylight (approximately 4,400 hrs. per year). CHARACTER OF SERVICE: 120240 Volts, AC, as...

  8. Data:Afc1b417-f433-443e-82f0-2a2ca8ab6d04 | Open Energy Information

    Open Energy Info (EERE)

    by the City of Austin. Street Lighting unit burning time is limited to dusk to daylight (approximately 4,400 hrs. per year). CHARACTER OF SERVICE: 120240 Volts, AC, as...

  9. Data:C2c3ca91-49d0-416e-8534-16d52fcadb9b | Open Energy Information

    Open Energy Info (EERE)

    District to limit the burning time of the lighting units to the period from dusk till daylight. Price of lamp per month: (Rated kW capacity of lamp, including ballast x 4000 x...

  10. Data:8690dc2b-2ca5-41c7-94d0-788802387183 | Open Energy Information

    Open Energy Info (EERE)

    private roadway and area lighting. Lighting unit burning time is limited to dusk to daylight (approximately 4,400 hrs. per year). CHARACTER OF SERVICE: 120240 Volts, AC, as...

  11. PDSF Selected Announcements

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

    maintenance on many NERSC systems PDSF will be down on July 13 from 8am-8pm Pacific Daylight Time. During the maintenance there will be no access to PDSF at all. A number of...

  12. Data:7cdcb974-419d-4068-9202-3cf2237cc151 | Open Energy Information

    Open Energy Info (EERE)

    private roadway and area lighting. Lighting unit burning time is limited to dusk to daylight (approximately 4,400 hrs. per year). CHARACTER OF SERVICE: 120240 Volts, AC, as...

  13. The Biggest, Brightest Star of Energy Efficiency | Department...

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

    anyone else noticed that the sun is starting to stick around a little longer lately? Daylight Saving Time is scheduled for March 10th this year, but I'm already thinking about...

  14. accurate similarity search: Topics by E-print Network

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

    faster query processing time as compared to state-of-the-art indexing methods such as Daylight fingerprints, C-tree and GraphGrep. Conclusions: Efficient similarity query...

  15. Webinar October 21: Opportunities for Wide Bandgap Semiconductor...

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

    Fuel Cell Applications" on Tuesday, October 21, from 12:00 p.m. to 1:00 p.m. Eastern Daylight Time. Numerous applications of hydrogen and fuel cell technologies could benefit from...

  16. Data:Fdb25b5a-4d4c-4cdd-b504-6226d98e734b | Open Energy Information

    Open Energy Info (EERE)

    by the City of Austin. Street Lighting unit burning time is limited to dusk to daylight (approximately 4,400 hrs. per year). CHARACTER OF SERVICE: 120240 Volts, AC, as...

  17. Data:6ec73deb-5330-4bba-a242-d49083aa5e8a | Open Energy Information

    Open Energy Info (EERE)

    by the City of Austin. Street Lighting unit burning time is limited to dusk to daylight (approximately 4,400 hrs. per year). CHARACTER OF SERVICE: 120240 Volts, AC, as...

  18. assessing hurricane katrina: Topics by E-print Network

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

    National;Cover: NOAA-15 satellite image of HurricaneKatrina at 7:47 a.m. Central Daylight Time, August 29,2005,just east of New Orleans, Louisiana. 12;ServiceAssessment...

  19. Data:2e73891b-0fd0-47db-b30b-c006a7367bfe | Open Energy Information

    Open Energy Info (EERE)

    by the City of Austin. Street Lighting unit burning time is limited to dusk to daylight (approximately 4,400 hrs. per year). CHARACTER OF SERVICE: 120240 Volts, AC, as...

  20. accidents traffic: Topics by E-print Network

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

    specifically, three distinct studies (more) OShields, Lara Lynn 2007-01-01 2 Does Daylight Savings Time Affect Traffic Accidents? Texas A&M University - TxSpace Summary: This...

  1. ITP Industrial Distributed Energy: Assessing the Benefits of...

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

    grid was gradually restored. The blackout began a few minutes after 4:00 pm Eastern Daylight Time, and power was not restored for four days in some parts of the United States....

  2. Is the hourly data I get from NREL's PV Watts program adjusted...

    Open Energy Info (EERE)

    get from NREL's PV Watts program adjusted for daylight savings time. Home I take the hourly AC output numbers and apply them to a program I built that assigns a dollar value to the...

  3. Data:8c173bd3-89ef-472a-afca-d6edb5e8f726 | Open Energy Information

    Open Energy Info (EERE)

    by the City of Austin. Street Lighting unit burning time is limited to dusk to daylight (approximately 4,400 hrs. per year). CHARACTER OF SERVICE: 120240 Volts, AC, as...

  4. Data:D40d7dc4-95f0-436a-bfef-53c39a360ce3 | Open Energy Information

    Open Energy Info (EERE)

    by the City of Austin. Street Lighting unit burning time is limited to dusk to daylight (approximately 4,400 hrs. per year). CHARACTER OF SERVICE: 120240 Volts, AC, as...

  5. Radiance | Department of Energy

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

    retrofit of the New York Times offices in New York.
    Image credit: Andrew McNeil, LBNL. Radiance rendering of daylighting and electric lighting for the retrofit of the New...

  6. Microsoft Word - November2014News.docx

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

    Scientists in the Spotlight NOV 8 11:00 AM TO 1:00 PM Chat with scientists about supernovae or aquatic biology. All ages welcome. Daylight Savings Time Ends NOV 2 Veterans Day...

  7. Timing Calibration in PET Using a Time Alignment Probe

    E-Print Network [OSTI]

    Moses, William W.; Thompson, Christopher J.

    2006-01-01T23:59:59.000Z

    when the two sets of calibration factors are loaded into theare equivalent. Inde, .er/#—calibration, positron emissionB. Conventional Time-Delay Calibration Method 4> >,? '- -'#$

  8. Reactor control rod timing system

    DOE Patents [OSTI]

    Wu, Peter T. K. (Clifton Park, NY)

    1982-01-01T23:59:59.000Z

    A fluid driven jet-edge whistle timing system for control rods of a nuclear reactor for producing real-time detection of the timing of each control rod in its scram operation. An important parameter in reactor safety, particularly for liquid metal fast breeder reactors (LMFBR), is the time deviation between the time the control rod is released and the time the rod actually reaches the down position. The whistle has a nearly pure tone signal with center frequency (above 100 kHz) far above the frequency band in which the energy of the background noise is concentrated. Each control rod can be fitted with a whistle with a different frequency so that there is no ambiguity in differentiating the signal from each control rod.

  9. Reactor control rod timing system

    SciTech Connect (OSTI)

    Wu, P.T.

    1982-02-09T23:59:59.000Z

    A fluid driven jet-edge whistle timing system for control rods of a nuclear reactor for producing real-time detection of the timing of each control rod in its scram operation. An important parameter in reactor safety, particularly for liquid metal fast breeder reactors (LMFBR), is the time deviation between the time the control rod is released and the time the rod actually reaches the down position. The whistle has a nearly pure tone signal with center frequency (Above 100 kHz) far above the frequency band in which the energy of the background noise is concentrated. Each control rod can be fitted with a whistle with a different frequency so that there is no ambiguity in differentiating the signal from each control rod.

  10. ExperTime: Tracking Expertise over Time Norwegian University of

    E-Print Network [OSTI]

    Nørvåg, Kjetil

    ExperTime: Tracking Expertise over Time Jan Rybak Norwegian University of Science and Technology Norwegian University of Science and Technology kjetil.norvag@idi.ntnu.no ABSTRACT This paper presents Exper 6­11, 2014, Gold Coast, Queensland, Australia. ACM 978-1-4503-2257-7/14/07. http://dx.doi.org/10

  11. IT'S ABOUT TIME Characteristic times in biogeochemistry and climate

    E-Print Network [OSTI]

    Schwartz, Stephen E.

    , and then It falls to earth: Can you tell me when? Decision making on energy and climate change #12;Impulse responseIT'S ABOUT TIME Characteristic times in biogeochemistry and climate Stephen E. Schwartz Symposium on biogeochemical cycling and climate In honor of Henning Rodhe on the occasion of his retirement from the chair

  12. Real-Time Control with Parametric Timed Reachability Games

    E-Print Network [OSTI]

    Boyer, Edmond

    for which the existence of a parameter valuation, such that there is a strategy for the controller to reach set of parameter valuations. Keywords: Timed automata, game theory, parameters, control, verification, model-checking 1. INTRODUCTION Formal methods are widely used in the analysis of time critical systems

  13. Copyright 2005 The Financial Times Limited Financial Times (London, England)

    E-Print Network [OSTI]

    Copyright 2005 The Financial Times Limited Financial Times (London, England) July 11, 2005 Monday London Edition 1 SECTION: COMMENT; Pg. 19 LENGTH: 922 words HEADLINE: Hope and generosity can triumph, nudged the world closer to this prospect. With the backdrop of the bombs in London, the Gleneagles

  14. Time Structure of Muonic Showers

    E-Print Network [OSTI]

    L. Cazon; R. A. Vazquez; A. A. Watson; E. Zas

    2003-11-10T23:59:59.000Z

    An analytical description of the time structure of the pulses induced by muons in air showers at ground level is deduced assuming the production distance distribution for the muons can be obtained elsewhere. The results of this description are compared against those obtained from simulated showers using AIRES. Major contributions to muon time delays are identified and a relation between the time structure and the depth distribution is unveiled.

  15. Quantum Gravity, the Origin of Time and Time's Arrow

    E-Print Network [OSTI]

    J. W. Moffat

    1992-09-02T23:59:59.000Z

    The local Lorentz and diffeomorphism symmetries of Einstein's gravitational theory are spontaneously broken by a Higgs mechanism by invoking a phase transition in the early Universe, at a critical temperature $T_c$ below which the symmetry is restored. The spontaneous breakdown of the vacuum state generates an external time and the wave function of the Universe satisfies a time dependent Schrodinger equation, which reduces to the Wheeler-deWitt equation in the classical regime for $T T_c$ and matter is created fractions of seconds after the big bang, generating the matter in the Universe. The time direction of the vacuum expectation value of the scalar Higgs field generates a time asymmetry, which defines the cosmological arrow of time and the direction of increasing entropy as the Lorentz symmetry is restored at low temperatures.

  16. Subsystem real-time Time Dependent Density Functional Theory

    E-Print Network [OSTI]

    Krishtal, Alisa; Pavanello, Michele

    2015-01-01T23:59:59.000Z

    We present the extension of Frozen Density Embedding (FDE) theory to real-time Time Dependent Density Functional Theory (rt-TDDFT). FDE a is DFT-in-DFT embedding method that allows to partition a larger Kohn-Sham system into a set of smaller, coupled Kohn-Sham systems. Additional to the computational advantage, FDE provides physical insight into the properties of embedded systems and the coupling interactions between them. The extension to rt-TDDFT is done straightforwardly by evolving the Kohn-Sham subsystems in time simultaneously, while updating the embedding potential between the systems at every time step. Two main applications are presented: the explicit excitation energy transfer in real time between subsystems is demonstrated for the case of the Na$_4$ cluster and the effect of the embedding on optical spectra of coupled chromophores. In particular, the importance of including the full dynamic response in the embedding potential is demonstrated.

  17. Resource Allocation with Time Intervals

    E-Print Network [OSTI]

    2009-09-21T23:59:59.000Z

    Keywords: resource allocation, proper intervals, unsplittable flow ... be positioned within a larger time interval) and call admission control, see [4] and [8] for ...

  18. Electric Time in Quantum Cosmology

    E-Print Network [OSTI]

    Stephon Alexander; Martin Bojowald; Antonino Marciano; David Simpson

    2012-12-10T23:59:59.000Z

    Effective quantum cosmology is formulated with a realistic global internal time given by the electric vector potential. New possibilities for the quantum behavior of space-time are found, and the high-density regime is shown to be very sensitive to the specific form of state realized.

  19. Time Management Top 50 Strategies

    E-Print Network [OSTI]

    , weekly and term goals in order of priority and work on top priorities. 2. Prioritize each task based-schedule yourself. 14. Get sleep, exercise and relaxation to keep your energy up. 15. Figure out your peak times of day for energy and do difficult tasks (e.g., studying) during that time. 16. Do the most difficult

  20. STARBASE: MANAGING CONTENTION AND TIMING

    E-Print Network [OSTI]

    Son, Sang H.

    systems (RT­DBMS) has primarily based on simulation. This chapter discusses how current real­time technology has been applied to architect an actual RT­DBMS on a real­time microkernel operating system. A real RT­DBMS must confront many practical issues which simulations typically ignore: race conditions

  1. Time Valid One-Time Signature for Time-Critical Multicast Data Authentication

    E-Print Network [OSTI]

    Nahrstedt, Klara

    malicious attacks. In this paper, we propose a novel signature model ­ Time Valid One-Time Signature (TV perfect tolerance to packet loss and strong robustness against malicious attacks. The communication is found in current substation communication systems where critical messages related to transient faults (e

  2. Contacts of space--times

    SciTech Connect (OSTI)

    Maia, M.D.

    1981-03-01T23:59:59.000Z

    The concept of contact between manifolds is applied to space--times of general relativity. For a given background space--time a contact approximation of second order is defined and interpreted both from the point of view of a metric pertubation and of a higher order tangent manifold. In the first case, an application to the high frequency gravitational wave hypothesis is suggested. In the second case, a constant curvature tangent bundle is constructed and suggested as a means to define a ten parameter local space--time symmetry.

  3. Time Gravity and Quantum Mechanics

    E-Print Network [OSTI]

    W. G. Unruh

    1993-12-17T23:59:59.000Z

    Time plays different roles in quantum mechanics and gravity. These roles are examined and the problems that the conflict in the roles presents for quantum gravity are briefly summarised.

  4. TIME-DEPENDENT MAXWELL'S EQUATIONS*

    E-Print Network [OSTI]

    Department of Mathematical Sciences, University of Delaware, Newark, Delaware 19716. (monklath.udel. ... The plan of the paperis as follows. In 2 we .... which states that the energy in the discrete system is independent of time. This energy ...

  5. Jaguar/Kraken time lapse

    SciTech Connect (OSTI)

    2009-11-17T23:59:59.000Z

    Time lapse video of the upgrade to ORNL's Jaguar and the University of Tennessee's Kraken, the world's fastest and third-fastest supercomputers. For more information, please visit www.nccs.gov.

  6. TIME SCHEDULE WINTER QUARTER 1970

    E-Print Network [OSTI]

    Kaminsky, Werner

    MASTER CON TIME SCHEDULE WINTER QUARTER 1970 ADVANCE REGISTRATION NOVEMBER 3-21 IN, please leave it or pass it along so that other students may use it. #12;Winter Quarter 1970. Examination

  7. UNDERGRAD FULL-TIME PART-TIME UNDERGRAD FULL-TIME PART-TIME Arts & Social Sciences 4706 1118 15 -19 3910 0

    E-Print Network [OSTI]

    -TIME UNDERGRAD FULL-TIME PART-TIME Year 1 3431 432 Tri-County area 7533 1474 Year 2 3012 406 Rest of Ontario 2929 GRADUATE FULL-TIME PART-TIME GRADUATE FULL-TIME PART-TIME Tri-County area 586 80 Spec & Cert 3 2 Rest

  8. Reduction in maximum time uncertainty of paired time signals

    DOE Patents [OSTI]

    Theodosiou, George E. (West Chicago, IL); Dawson, John W. (Clarendon Hills, IL)

    1983-01-01T23:59:59.000Z

    Reduction in the maximum time uncertainty (t.sub.max -t.sub.min) of a series of paired time signals t.sub.1 and t.sub.2 varying between two input terminals and representative of a series of single events where t.sub.1 .ltoreq.t.sub.2 and t.sub.1 +t.sub.2 equals a constant, is carried out with a circuit utilizing a combination of OR and AND gates as signal selecting means and one or more time delays to increase the minimum value (t.sub.min) of the first signal t.sub.1 closer to t.sub.max and thereby reduce the difference. The circuit may utilize a plurality of stages to reduce the uncertainty by factors of 20-800.

  9. Reduction in maximum time uncertainty of paired time signals

    DOE Patents [OSTI]

    Theodosiou, G.E.; Dawson, J.W.

    1983-10-04T23:59:59.000Z

    Reduction in the maximum time uncertainty (t[sub max]--t[sub min]) of a series of paired time signals t[sub 1] and t[sub 2] varying between two input terminals and representative of a series of single events where t[sub 1][<=]t[sub 2] and t[sub 1]+t[sub 2] equals a constant, is carried out with a circuit utilizing a combination of OR and AND gates as signal selecting means and one or more time delays to increase the minimum value (t[sub min]) of the first signal t[sub 1] closer to t[sub max] and thereby reduce the difference. The circuit may utilize a plurality of stages to reduce the uncertainty by factors of 20--800. 6 figs.

  10. Reduction in maximum time uncertainty of paired time signals

    DOE Patents [OSTI]

    Theodosiou, G.E.; Dawson, J.W.

    1981-02-11T23:59:59.000Z

    Reduction in the maximum time uncertainty (t/sub max/ - t/sub min/) of a series of paired time signals t/sub 1/ and t/sub 2/ varying between two input terminals and representative of a series of single events where t/sub 1/ less than or equal to t/sub 2/ and t/sub 1/ + t/sub 2/ equals a constant, is carried out with a circuit utilizing a combination of OR and AND gates as signal selecting means and one or more time delays to increase the minimum value (t/sub min/) of the first signal t/sub 1/ closer to t/sub max/ and thereby reduce the difference. The circuit may utilize a plurality of stages to reduce the uncertainty by factors of 20 to 800.

  11. Time evolution of cascade decay

    E-Print Network [OSTI]

    Daniel Boyanovsky; Louis Lello

    2014-06-25T23:59:59.000Z

    We study non-perturbatively the time evolution of cascade decay for generic fields $\\pi \\rightarrow \\phi_1\\phi_2\\rightarrow \\phi_2\\chi_1\\chi_2$ and obtain the time dependence of amplitudes and populations for the resonant and final states. We analyze in detail the different time scales and the manifestation of unitary time evolution in the dynamics of production and decay of resonant intermediate and final states. The probability of occupation (population) "flows" as a function of time from the initial to the final states. When the decay width of the parent particle $\\Gamma_\\pi$ is much larger than that of the intermediate resonant state $\\Gamma_{\\phi_1}$ there is a "bottleneck" in the flow, the population of resonant states builds up to a maximum at $t^* = \\ln[\\Gamma_\\pi/\\Gamma_{\\phi_1}]/(\\Gamma_\\pi-\\Gamma_{\\phi_1})$ nearly saturating unitarity and decays to the final state on the longer time scale $1/\\Gamma_{\\phi_1}$. As a consequence of the wide separation of time scales in this case the cascade decay can be interpreted as evolving sequentially $\\pi \\rightarrow \\phi_1\\phi_2; ~ \\phi_1\\phi_2\\rightarrow \\phi_2\\chi_1\\chi_2$. In the opposite limit the population of resonances ($\\phi_1$) does not build up substantially and the cascade decay proceeds almost directly from the initial parent to the final state without resulting in a large amplitude of the resonant state. An alternative but equivalent non-perturbative method useful in cosmology is presented. Possible phenomenological implications for heavy sterile neutrinos as resonant states and consequences of quantum entanglement and correlations in the final state are discussed.

  12. Solar and daylight availability evaluation and estimation in urban fabric under specific sky conditions

    E-Print Network [OSTI]

    Zemmouri,N.

    2014-01-01T23:59:59.000Z

    with changing materials of construction Used water Energy consumpted Odor Production of photochimic ozone Human toxicity Aquatic ecotoxicity Euthrophisation GWP Inert wastes product Radioactif wastes Submission of abiotic ressources Acidification Impacts... of BET-TImpacts of BET . Used water Energy consumpted Odor Production of photochimic ozone Human toxicity Aquatic ecotoxicity Euthrophisation GWP Inert wastes product Radioactif wastes Submission of abiotic ressources Acidification Impacts of BBC ESL...

  13. Impact of Fixed Exterior Shading on Daylighting: A Case Study of the David Brower Center

    E-Print Network [OSTI]

    Zelenay, Krystyna

    2011-01-01T23:59:59.000Z

    lighting energy use The reference case for comparisonsin comparison with the variations in electrical lighting

  14. THERMAL-LITE : a microcomputer program for thermal and daylighting analysis

    E-Print Network [OSTI]

    Hoshino, Makoto

    1984-01-01T23:59:59.000Z

    Among the variety of building elements that form the boundary between artificially and naturally controlled space, aperture is responsible for a significant amount of the building's energy consumption, and has one of the ...

  15. A SIMPLIFIED PROCEDURE FOR CALCULATING THE EFFECTS OF DAYLIGHT FROM CLEAR SKIES

    E-Print Network [OSTI]

    Bryan, Harvey J.

    2012-01-01T23:59:59.000Z

    Waldram diagram with droop lines corrected for glazingon Waldram diagram with droop lines, F:tgure 7, AZIMUTHlines in Figure 4 are called "droop lines" and represent the

  16. Impact of Fixed Exterior Shading on Daylighting: A Case Study of the David Brower Center

    E-Print Network [OSTI]

    Zelenay, Krystyna

    2011-01-01T23:59:59.000Z

    lighting for work. Applied Ergonomics, 37(4), 461-466. doi:in Buildings. ” Applied Ergonomics, 3(4), 206-215. 29.in Occupational Ergonomics and Safety I: Proceedings of the

  17. Impact of Fixed Exterior Shading on Daylighting: A Case Study of the David Brower Center

    E-Print Network [OSTI]

    Zelenay, Krystyna

    2011-01-01T23:59:59.000Z

    performance indicators uc/item/1mq5k9mw performance indicators. Many of the visual2.5. D AYLIGHT PERFORMANCE INDICATORS While attaining a

  18. An interactive performance-based expert system for daylighting in architectural design

    E-Print Network [OSTI]

    Gagne, Jaime M. L. (Jaime Michelle Lee)

    2011-01-01T23:59:59.000Z

    Design practitioners are increasingly using digital tools during the design process; however, building performance simulation continues to be more commonly utilized for analysis rather than as a design aid. Additionally, ...

  19. Impact of Fixed Exterior Shading on Daylighting: A Case Study of the David Brower Center

    E-Print Network [OSTI]

    Zelenay, Krystyna

    2011-01-01T23:59:59.000Z

    passive design strategies, including proper building massing and solarbuilding massing and solar orientation, a number of other passive design

  20. Blackberry Creek Daylighting Project, Berkeley : Ten-Year Post-Project Appraisal

    E-Print Network [OSTI]

    Gerson, Stephanie Karla; Wardani, Jane; Niazi, Shiva

    2005-01-01T23:59:59.000Z

    manager. Personal Communication. December Creek Currents.1994. Blackberry Creek restoration project.Creek Currents. Berkeley, California. Spring/Summer 1994. p.

  1. Impact of Fixed Exterior Shading on Daylighting: A Case Study of the David Brower Center

    E-Print Network [OSTI]

    Zelenay, Krystyna

    2011-01-01T23:59:59.000Z

    passive design strategies, including proper building massing and solarand solar orientation, a number of other passive design

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

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

    technologies to maximize energy generation & energy efficiency from the building's solar insolation resources. Project presents a novel, low-cost approach to mitigate...

  3. A SIMPLIFIED PROCEDURE FOR CALCULATING THE EFFECTS OF DAYLIGHT FROM CLEAR SKIES

    E-Print Network [OSTI]

    Bryan, Harvey J.

    2012-01-01T23:59:59.000Z

    obstructed sky. The clear sky luminance distribution thatformula: where Le "' Luminance of sky position beingof Luminance Distribution on Clear Skies,~r CIE PUBLICATION

  4. A PROCEDURE FOR CALCULATING INTERIOR DAYLIGHT ILLUMINATION WITH A PROGRAMMABLE HAND CALCULATOR

    E-Print Network [OSTI]

    Bryan, H.J.

    2010-01-01T23:59:59.000Z

    within a room utilizing sky luminance distribution functionsis a function of the sky luminance, the window transmission,normal. The CIE Standard Sky luminance function 4 is given

  5. Impact of Fixed Exterior Shading on Daylighting: A Case Study of the David Brower Center

    E-Print Network [OSTI]

    Zelenay, Krystyna

    2011-01-01T23:59:59.000Z

    for the clear day. The sky luminance of an overcast sky isthe Perez sky model to calculate the luminance distribution

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

    E-Print Network [OSTI]

    Ward, Gregory

    2011-01-01T23:59:59.000Z

    D and a set of sky patch luminances, we can compute thewindow s = sky vector, assigning luminance values to patchessky condition, we could quickly compute the outgoing luminance

  7. Daylighting control performance of a thin-film ceramic electrochromic window: Field study results

    SciTech Connect (OSTI)

    Lee, E.S.; DiBartolomeo, D.L.; Selkowitz, S.E.

    2005-01-26T23:59:59.000Z

    Control system development and lighting energy monitoring of ceramic thin-film electrochromic (EC) windows were initiated at the new full-scale window systems test-bed facility at the Lawrence Berkeley National Laboratory (LBNL) in Berkeley, CA. The new facility consists of three identically configured side-by-side private offices with large-area windows that face due south. In one room, an array of EC windows with a center-of-glass visible transmittance T_v range of 0.05-0.60 was installed. In the two other rooms, unshaded windows with a T_v = 0.50 or 0.15 were used as reference. The same dimmable fluorescent lighting system was used in all three rooms. This study explains the design and commissioning of an integrated EC window-lighting control system, and then illustrates its performance in the test-bed under clear, partly cloudy, and overcast sky conditions during the equinox period. The performance of an early prototype EC window controller is also analyzed. Lighting energy savings data are presented. Daily lighting energy savings were 44-59% compared to the reference window of T_v = 0.15 and 8-23% compared to the reference window of T_v = 0.50. The integrated window-lighting control system maintained interior illuminance levels to within +/- 10% of the setpoint range of 510-700 lx for 89-99% of the day. Further work is planned to refine the control algorithms and monitor cooling load, visual comfort, and human factor impacts of this emerging technology. (author)

  8. Impact of Fixed Exterior Shading on Daylighting: A Case Study of the David Brower Center

    E-Print Network [OSTI]

    Zelenay, Krystyna

    2011-01-01T23:59:59.000Z

    to-wall ratio, electrochromic glazing, etc. considered? 5.shading systems, switchable electrochromic and thermochromic

  9. Monitored Energy Performance of Electrochromic Windows Controlled for Daylight and Visual Comfort

    E-Print Network [OSTI]

    Lee, Eleanor S.; DiBartolomeo, Dennis L.; Klems, Joseph; Yazdanian, Mehry; Selkowitz, Stephen E.

    2005-01-01T23:59:59.000Z

    Subject responses to electrochromic windows. Submitted toin a full-scale electrochromic window testbed. Technicaloptimization of electrochromic operations for occupant

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

    E-Print Network [OSTI]

    Leaver, J.; McQueen, T.

    1987-01-01T23:59:59.000Z

    of microcomputer-generated models, especially as they relate to building studies in zones of extreme climate. The hot, humid environment of Louisiana poses unique problems and calls for creative solutions. The use of microcomputers as analytical tools to develop...

  11. CBEI: Enhancing OpenStudio for Airflow and Daylight Modeling - 2015 Peer

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China U.S. Department ofJune 2,The BigSidingState6 (2-91)A2015 Peer Review | Department

  12. High-Efficiency Solar Cogeneration with T-PV and Fiber Optic Daylighting

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To:Department of EnergySeacrist, Senior FellowDepartment of

  13. OpenStudio Enhancements for Whole-Building Daylighting, Airflow, and Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOilNEWResponse toOctober 2014Funds for CleanAbout

  14. Is the hourly data I get from NREL's PV Watts program adjusted for daylight

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano, Hawaii | OpenSuperior Wind FarmIowa/WindIransavings

  15. 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)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProductsAlternative FuelsSanta FeAuthorization| Department AnAnAn Improved

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

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently Asked Questions for DOE FYAffairs,AssessmentInteractive GraphicExcelFindKitchen?

  17. Is the hourly data from the NREL PV Watts program adjusted for daylight

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup | OpenHunanInformation sourceInvensys BuildingIowaIrara

  18. Time Consistent Risk Measure Under Stopping Time Framework ...

    E-Print Network [OSTI]

    2015-02-13T23:59:59.000Z

    or down-side risk measures have been proposed, from the Roy's safety-first criterion .... the probability P(xt ? Ct) to be no less than ? at time t, i.e.,. P(xt ? Ct) ...... 1, into the objective function E[xt], we have. E[xt] = t?1. ? k=0 ekx0 + t?1. ? s

  19. Snyder noncommutative space-time from two-time physics

    SciTech Connect (OSTI)

    Romero, Juan M.; Zamora, Adolfo [Instituto de Ciencias Nucleares, UNAM, Apartado Postal 70-543, Mexico DF (Mexico)

    2004-11-15T23:59:59.000Z

    We show that the two-time physics model leads to a mechanical system with Dirac brackets consistent with the Snyder noncommutative space. A Euclidean version of this space is also obtained and it is shown that both spaces have a dual system describing a particle in a curved space.

  20. Ideally embedded space-times

    E-Print Network [OSTI]

    Haesen, S; Haesen, Stefan; Verstraelen, Leopold

    2004-01-01T23:59:59.000Z

    Due to the growing interest in embeddings of space-time in higher-dimensional spaces we consider a specific type of embedding. After proving an inequality between intrinsically defined curvature invariants and the squared mean curvature, we extend the notion of ideal embeddings from Riemannian geometry to the indefinite case. Ideal embeddings are such that the embedded manifold receives the least amount of tension from the surrounding space. Then it is shown that the de Sitter spaces, a Robertson-Walker space-time and some anisotropic perfect fluid metrics can be ideally embedded in a five-dimensional pseudo-Euclidean space.

  1. Ideally embedded space-times

    E-Print Network [OSTI]

    Stefan Haesen; Leopold Verstraelen

    2004-04-01T23:59:59.000Z

    Due to the growing interest in embeddings of space-time in higher-dimensional spaces we consider a specific type of embedding. After proving an inequality between intrinsically defined curvature invariants and the squared mean curvature, we extend the notion of ideal embeddings from Riemannian geometry to the indefinite case. Ideal embeddings are such that the embedded manifold receives the least amount of tension from the surrounding space. Then it is shown that the de Sitter spaces, a Robertson-Walker space-time and some anisotropic perfect fluid metrics can be ideally embedded in a five-dimensional pseudo-Euclidean space.

  2. Noncommutative space-time models

    E-Print Network [OSTI]

    N. A. Gromov; V. V. Kuratov

    2005-07-01T23:59:59.000Z

    The FRT quantum Euclidean spaces $O_q^N$ are formulated in terms of Cartesian generators. The quantum analogs of N-dimensional Cayley-Klein spaces are obtained by contractions and analytical continuations. Noncommutative constant curvature spaces are introduced as a spheres in the quantum Cayley-Klein spaces. For N=5 part of them are interpreted as the noncommutative analogs of (1+3) space-time models. As a result the quantum (anti) de Sitter, Newton, Galilei kinematics with the fundamental length and the fundamental time are suggested.

  3. The TESLA Time Projection Chamber

    E-Print Network [OSTI]

    Nabil Ghodbane

    2002-12-12T23:59:59.000Z

    A large Time Projection Chamber is proposed as part of the tracking system for a detector at the TESLA electron positron linear collider. Different ongoing R&D studies are reviewed, stressing progress made on a new type readout technique based on Micro-Pattern Gas Detectors.

  4. Time of flight mass spectrometer

    DOE Patents [OSTI]

    Ulbricht, Jr., William H. (Arvada, CO)

    1984-01-01T23:59:59.000Z

    A time-of-flight mass spectrometer is described in which ions are desorbed from a sample by nuclear fission fragments, such that desorption occurs at the surface of the sample impinged upon by the fission fragments. This configuration allows for the sample to be of any thickness, and eliminates the need for complicated sample preparation.

  5. Curricular internship Timing and Duration

    E-Print Network [OSTI]

    Krause, Rolf

    1 Art.1 Curricular internship Art.2 Objectives Art.3 Timing and Duration Art.4 Choice of Employer Art.5 Pertinence of the internship Art.6 Internship Search GRADUATE INTERNSHIP GUIDELINES Faculties training or work experience, herein referred to as `internship', is one of the graduation requirements. 2

  6. Waste to Energy Time Activities

    E-Print Network [OSTI]

    SEMINAR Waste to Energy Time Activities 9:30-9:40 Brief introduction of participants 9:40-10:10 Presentation of Dr. Kalogirou, "Waste to Energy: An Integral Part of Worldwide Sustainable Waste Management" 10. Sofia Bethanis, "Production of synthetic aggregates for use in structural concrete from waste to energy

  7. TIME-RESOLVED VIBRATIONAL SPECTROSCOPY

    SciTech Connect (OSTI)

    Andrei Tokmakoff, MIT (Conference Chair) [Conference Chair; Paul Champion, Northeastern University; Edwin J. Heilweil, NIST; Keith A. Nelson, MIT; Larry Ziegler, Boston University

    2009-05-14T23:59:59.000Z

    This document contains the Proceedings from the 14th International Conference on Time-Resolved Vibrational Spectroscopy, which was held in Meredith, NH from May 9-14, 2009. The study of molecular dynamics in chemical reaction and biological processes using time-resolved spectroscopy plays an important role in our understanding of energy conversion, storage, and utilization problems. Fundamental studies of chemical reactivity, molecular rearrangements, and charge transport are broadly supported by the DOE�s Office of Science because of their role in the development of alternative energy sources, the understanding of biological energy conversion processes, the efficient utilization of existing energy resources, and the mitigation of reactive intermediates in radiation chemistry. In addition, time-resolved spectroscopy is central to all five of DOE�s grand challenges for fundamental energy science. The Time-Resolved Vibrational Spectroscopy conference is organized biennially to bring the leaders in this field from around the globe together with young scientists to discuss the most recent scientific and technological advances. The latest technology in ultrafast infrared, Raman, and terahertz spectroscopy and the scientific advances that these methods enable were covered. Particular emphasis was placed on new experimental methods used to probe molecular dynamics in liquids, solids, interfaces, nanostructured materials, and biomolecules.

  8. Time Management Top 50 Strategies

    E-Print Network [OSTI]

    daily, weekly and term goals in order of priority and work on top priorities. 2. Prioritize each task limitations and do not overschedule yourself. 14. Get sleep, exercise and relaxation to keep your energy up. 15. Figure out your peak times of day for energy and do difficult tasks (e.g.: studying) during

  9. High resolution time interval meter

    DOE Patents [OSTI]

    Martin, A.D.

    1986-05-09T23:59:59.000Z

    Method and apparatus are provided for measuring the time interval between two events to a higher resolution than reliability available from conventional circuits and component. An internal clock pulse is provided at a frequency compatible with conventional component operating frequencies for reliable operation. Lumped constant delay circuits are provided for generating outputs at delay intervals corresponding to the desired high resolution. An initiation START pulse is input to generate first high resolution data. A termination STOP pulse is input to generate second high resolution data. Internal counters count at the low frequency internal clock pulse rate between the START and STOP pulses. The first and second high resolution data are logically combined to directly provide high resolution data to one counter and correct the count in the low resolution counter to obtain a high resolution time interval measurement.

  10. DEVELOPING IMPROVED TRAVEL TIME RELIABILITY MEASURES FOR REAL-TIME AND ARCHIVED ITS DATA

    E-Print Network [OSTI]

    Bertini, Robert L.

    including travel time, 95th percentile travel time, travel time index, buffer index planning time index-based detector data, collected in periodic special studies, or estimated using simulation [1,3]: 95th Percentile between 95th percentile travel time and mean travel time, divided by mean travel time. Planning Time Index

  11. Introduction Space Time Codes Space Time Coding with Feedback New Thoughts Summary Space-Time Coding for Multi-Antenna

    E-Print Network [OSTI]

    Veeravalli, Venugopal

    Introduction Space Time Codes Space Time Coding with Feedback New Thoughts Summary Space 2007 #12;Introduction Space Time Codes Space Time Coding with Feedback New Thoughts Summary MIMO: Diversity vs Multiplexing Multiplexing Diversity Pictures taken from lectures notes on Space Time Coding

  12. Treating Time Travel Quantum Mechanically

    E-Print Network [OSTI]

    John-Mark A. Allen

    2014-10-10T23:59:59.000Z

    The fact that closed timelike curves (CTCs) are permitted by general relativity raises the question as to how quantum systems behave when time travel to the past occurs. Research into answering this question by utilising the quantum circuit formalism has given rise to two theories: Deutschian-CTCs (D-CTCs) and "postselected" CTCs (P-CTCs). In this paper the quantum circuit approach is thoroughly reviewed, and the strengths and shortcomings of D-CTCs and P-CTCs are presented in view of their non-linearity and time travel paradoxes. In particular, the "equivalent circuit model"---which aims to make equivalent predictions to D-CTCs, while avoiding some of the difficulties of the original theory---is shown to contain errors. The discussion of D-CTCs and P-CTCs is used to motivate an analysis of the features one might require of a theory of quantum time travel, following which two overlapping classes of new theories are identified. One such theory, the theory of "transition probability" CTCs (T-CTCs), is fully developed. The theory of T-CTCs is shown not to have certain undesirable features---such as time travel paradoxes, the ability to distinguish non-orthogonal states with certainty, and the ability to clone or delete arbitrary pure states---that are present with D-CTCs and P-CTCs. The problems with non-linear extensions to quantum mechanics are discussed in relation to the interpretation of these theories, and the physical motivations of all three theories are discussed and compared.

  13. --No Title--

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

    to control lighting." (ix) Daylighting (sidelighting, skylights, or tubular daylight devices). "The TRACE 700 software can model daylighting." (x) Improved fan system...

  14. Microsoft Word - qs_trace-700_v6-2-4.docx

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

    to control lighting." (ix) Daylighting (sidelighting, skylights, or tubular daylight devices). "The TRACE 700 software can model daylighting." (x) Improved fan system...

  15. Tax Deduction Qualified Software: TRACE 700 version 6.3.0

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

    to control lighting." (ix) Daylighting (sidelighting, skylights, or tubular daylight devices). "The TRACE 700 software can model daylighting." (x) Improved fan system...

  16. Tax Deduction Qualified Software TRACE 700 version 6.3.0

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

    to control lighting." (ix) Daylighting (sidelighting, skylights, or tubular daylight devices). "The TRACE 700 software can model daylighting." (x) Improved fan system...

  17. Payroll & Human Resources (PHR) System Time Entry Tip Sheet PHR EXEMPT TIME ENTRY PHR EXEMPT TIME ENTRY PHR EXEMPT TIME ENTRY

    E-Print Network [OSTI]

    Shapiro, Benjamin

    , select Quit to exit. Completing Your Timesheet 1. From the Time Entry page, select the appropriate pay - Menu screen, select Quit to exit. Completing Your Timesheet 1. From the Time Entry page, selectPayroll & Human Resources (PHR) System Time Entry Tip Sheet PHR EXEMPT TIME ENTRY PHR EXEMPT TIME

  18. Real time infrared aerosol analyzer

    DOE Patents [OSTI]

    Johnson, Stanley A. (Countryside, IL); Reedy, Gerald T. (Bourbonnais, IL); Kumar, Romesh (Naperville, IL)

    1990-01-01T23:59:59.000Z

    Apparatus for analyzing aerosols in essentially real time includes a virtual impactor which separates coarse particles from fine and ultrafine particles in an aerosol sample. The coarse and ultrafine particles are captured in PTFE filters, and the fine particles impact onto an internal light reflection element. The composition and quantity of the particles on the PTFE filter and on the internal reflection element are measured by alternately passing infrared light through the filter and the internal light reflection element, and analyzing the light through infrared spectrophotometry to identify the particles in the sample.

  19. Regression quantiles for time series

    E-Print Network [OSTI]

    Cai, Zongwu

    2002-02-01T23:59:59.000Z

    ~see, e+g+, Ibragimov and Linnik, 1971, p+ 316!+ Namely, partition REGRESSION QUANTILES FOR TIME SERIES 187 $1, + + + , n% into 2qn 1 1 subsets with large block of size r 5 rn and small block of size s 5 sn+ Set q 5 qn 5 ? n rn 1 sn? , (A.7) where {x...! are the standard Lindeberg–Feller conditions for asymptotic normality of Qn,1 for the independent setup+ Let us first establish ~A+8!+ To this effect, we define the large-block size rn by rn 5 {~nhn!102} and the small-block size sn 5 {~nhn!1020log n}+ Then, as n r...

  20. Time Contortions in Modern Physics

    E-Print Network [OSTI]

    A. F. Kracklauer

    2002-06-24T23:59:59.000Z

    As a basis for epistemological study of ``time,'' we analyze three suspect phenomena introduced by modern physics: non-locality, asymmetric aging and advanced interaction. It is shown that all three arise in connection with what has to be taken as arbitrary ideosyncrasies in formulation. It is shown that minor changes result in internally consistent variations of both Quantum Mechanics and Special Relativity devoid of these phenomena. The reinterpretation of some experiments though to confirm the existence of non-locality and asymmetric aging is briefly considered and a possible test is proposed.

  1. Tests of time-invariance

    E-Print Network [OSTI]

    Busetti, Fabio; Harvey, Andrew C

    as an alternative - or complement - to quan- tiles; see, for example, Newey and Powell (1987), Efron (1991) and, in a time series context, De Rossi and Harvey (2006b). We then de?ne residuals based on expectiles and show that they can be used to construct... based on absolute values, (5), are very close to those of the #17;#28; (DQ) tests in (3). The earlier theoretical analysis indicated that the statistics are identical for known quan- tiles and it appears that enforcing the symmetry restriction when...

  2. Fermi Timing and Synchronization System

    SciTech Connect (OSTI)

    Wilcox, R.; Staples, J.; Doolittle, L.; Byrd, J.; Ratti, A.; Kaertner, F.X.; Kim, J.; Chen, J.; Ilday, F.O.; Ludwig, F.; Winter, A.; Ferianis, M.; Danailov, M.; D'Auria, G.

    2006-07-19T23:59:59.000Z

    The Fermi FEL will depend critically on precise timing of its RF, laser and diagnostic subsystems. The timing subsystem to coordinate these functions will need to reliably maintain sub-100fs synchronicity between distant points up to 300m apart in the Fermi facility. The technology to do this is not commercially available, and has not been experimentally demonstrated in a working facility. Therefore, new technology must be developed to meet these needs. Two approaches have been researched by different groups working with the Fermi staff. At MIT, a pulse transmission scheme has been developed for synchronization of RF and laser devices. And at LBL, a CW transmission scheme has been developed for RF and laser synchronization. These respective schemes have advantages and disadvantages that will become better understood in coming years. This document presents the work done by both teams, and suggests a possible system design which integrates them both. The integrated system design provides an example of how choices can be made between the different approaches without significantly changing the basic infrastructure of the system. Overall system issues common to any synchronization scheme are also discussed.

  3. A subquantum arrow of time

    E-Print Network [OSTI]

    Theo M. Nieuwenhuizen

    2014-09-10T23:59:59.000Z

    The outcome of a single quantum experiment is unpredictable, except in a pure-state limit. The definite process that takes place in the apparatus may either be intrinsically random or be explainable from a deeper theory. While the first scenario is the standard lore, the latter implies that quantum mechanics is emergent. In that case, it is likely that one has to reconsider radiation by accelerated charges as a physical effect, which thus must be compensated by an energy input. Stochastic electrodynamics, for example, asserts that the vacuum energy arises from classical fluctuations with energy $\\frac{1}{2}\\hbar\\omega$ per mode. In such theories the stability of the hydrogen ground state will arise from energy input from fluctuations and output by radiation, hence due to an energy throughput. That flux of energy constitutes an arrow of time, which we call the "subquantum arrow of time". It is related to the stability of matter and it is more fundamental than, e.g., the thermodynamic and cosmological arrows.

  4. Global Warming in Geologic Time

    ScienceCinema (OSTI)

    David Archer

    2010-01-08T23:59:59.000Z

    The notion is pervasive in the climate science community and in the public at large that the climate impacts of fossil fuel CO2 release will only persist for a few centuries. This conclusion has no basis in theory or models of the atmosphere / ocean carbon cycle, which we review here. The largest fraction of the CO2 recovery will take place on time scales of centuries, as CO2 invades the ocean, but a significant fraction of the fossil fuel CO2, ranging in published models in the literature from 20-60%, remains airborne for a thousand years or longer. Ultimate recovery takes place on time scales of hundreds of thousands of years, a geologic longevity typically associated in public perceptions with nuclear waste. The glacial / interglacial climate cycles demonstrate that ice sheets and sea level respond dramatically to millennial-timescale changes in climate forcing. There are also potential positive feedbacks in the carbon cycle, including methane hydrates in the ocean, and peat frozen in permafrost, that are most sensitive to the long tail of the fossil fuel CO2 in the atmosphere.

  5. Global Warming in Geologic Time

    SciTech Connect (OSTI)

    David Archer

    2008-02-27T23:59:59.000Z

    The notion is pervasive in the climate science community and in the public at large that the climate impacts of fossil fuel CO2 release will only persist for a few centuries. This conclusion has no basis in theory or models of the atmosphere / ocean carbon cycle, which we review here. The largest fraction of the CO2 recovery will take place on time scales of centuries, as CO2 invades the ocean, but a significant fraction of the fossil fuel CO2, ranging in published models in the literature from 20-60%, remains airborne for a thousand years or longer. Ultimate recovery takes place on time scales of hundreds of thousands of years, a geologic longevity typically associated in public perceptions with nuclear waste. The glacial / interglacial climate cycles demonstrate that ice sheets and sea level respond dramatically to millennial-timescale changes in climate forcing. There are also potential positive feedbacks in the carbon cycle, including methane hydrates in the ocean, and peat frozen in permafrost, that are most sensitive to the long tail of the fossil fuel CO2 in the atmosphere.

  6. Stationary distributions of continuous time Markov chains

    E-Print Network [OSTI]

    2012-04-13T23:59:59.000Z

    Apr 13, 2012 ... stationary distribution as the limiting fraction of time spent in states. 1 Stationary measures in continuous time. The following theorem is an ...

  7. The Delivery Man Problem with Time Windows

    E-Print Network [OSTI]

    2009-09-01T23:59:59.000Z

    depot, while open time windows are considered at all other locations. ... nodes of G: earliest and latest times are described by parameters ei and li for nodes i ...

  8. Variable residence time vortex combustor

    DOE Patents [OSTI]

    Melconian, Jerry O. (76 Beaver Rd., Reading, MA 01867)

    1987-01-01T23:59:59.000Z

    A variable residence time vortex combustor including a primary combustion chamber for containing a combustion vortex, and a plurality of louvres peripherally disposed about the primary combustion chamber and longitudinally distributed along its primary axis. The louvres are inclined to impel air about the primary combustion chamber to cool its interior surfaces and to impel air inwardly to assist in driving the combustion vortex in a first rotational direction and to feed combustion in the primary combustion chamber. The vortex combustor also includes a second combustion chamber having a secondary zone and a narrowed waist region in the primary combustion chamber interconnecting the output of the primary combustion chamber with the secondary zone for passing only lower density particles and trapping higher density particles in the combustion vortex in the primary combustion chamber for substantial combustion.

  9. Solar Real-Time Pricing: Is Real-Time Electricity Pricing Beneficial...

    Energy Savers [EERE]

    Information Resources Solar Real-Time Pricing: Is Real-Time Electricity Pricing Beneficial to Solar PV in New York City? Solar Real-Time Pricing: Is Real-Time Electricity...

  10. Payroll & Human Resources (PHR) System Time Entry Tip Sheet PHR NON-EXEMPT TIME ENTRY PHR NON-EXEMPT TIME ENTRY PHR NON-EXEMPT TIME ENTRY

    E-Print Network [OSTI]

    Shapiro, Benjamin

    , select Quit to exit. Completing Your Timesheet 1. From the Time Entry page, select the appropriate pay the Time Entry - Menu screen, select Quit to exit. Completing Your Timesheet 1. From the Time Entry page. 5. From the Time Entry - Menu screen, select Quit to exit. HELP/SUPPORT HELP/SUPPORT HELP

  11. Concurrency Theory Lecture 22: Timed Modelling & Conclusions

    E-Print Network [OSTI]

    Ábrahám, Erika

    Systems Example 22.1 (Real-time reactive systems) brake systems and airbags in cars plant controls mobile.1 (Real-time reactive systems) brake systems and airbags in cars plant controls mobile phones ... Real-Time Reactive Systems Example 22.1 (Real-time reactive systems) brake systems and airbags in cars plant controls

  12. Introduction Discrete-time autoregressive process

    E-Print Network [OSTI]

    Di Girolami, Cristina

    Introduction Discrete-time autoregressive process Continuous-time Ornstein-Uhlenbeck process Sharp large deviations for the non-stationary Ornstein-Uhlenbeck process Bernard Bercu Bordeaux University-Uhlenbeck process 1 / 46 #12;Introduction Discrete-time autoregressive process Continuous-time Ornstein

  13. Using Run-Time Predictions to Estimate Queue Wait Times and Improve Scheduler Performance

    E-Print Network [OSTI]

    Feitelson, Dror

    that using our run-time predictor results in lower mean wait times for the workloads with higher o ered loads of the systems we are simulating.We also nd that using our run-time predictors result in mean wait timesUsing Run-Time Predictions to Estimate Queue Wait Times and Improve Scheduler Performance Warren

  14. Time-of-flight radio location system

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-04-23T23:59:59.000Z

    A bi-static radar configuration measures the direct time-of-flight of a transmitted RF pulse and is capable of measuring this time-of-flight with a jitter on the order of about one pico-second, or about 0.01 inch of free space distance for an electromagnetic pulse over a range of about one to ten feet. A transmitter transmits a sequence of electromagnetic pulses in response to a transmit timing signal, and a receiver samples the sequence of electromagnetic pulses with controlled timing in response to a receive timing signal, and generates a sample signal in response to the samples. A timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the sequence of electromagnetic pulses such that the time between transmission of pulses in the sequence and sampling by the receiver sweeps over a range of delays. The receive timing signal sweeps over the range of delays in a sweep cycle such that pulses in the sequence are sampled at the pulse repetition rate, and with different delays in the range of delays to produce a sample signal representing magnitude of a received pulse in equivalent time. Automatic gain control circuitry in the receiver controls the magnitude of the equivalent time sample signal. A signal processor analyzes the sample signal to indicate the time-of-flight of the electromagnetic pulses in the sequence. 7 figs.

  15. Time-of-flight radio location system

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1996-01-01T23:59:59.000Z

    A bi-static radar configuration measures the direct time-of-flight of a transmitted RF pulse and is capable of measuring this time-of-flight with a jitter on the order of about one pico-second, or about 0.01 inch of free space distance for an electromagnetic pulse over a range of about one to ten feet. A transmitter transmits a sequence of electromagnetic pulses in response to a transmit timing signal, and a receiver samples the sequence of electromagnetic pulses with controlled timing in response to a receive timing signal, and generates a sample signal in response to the samples. A timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the sequence of electromagnetic pulses such that the time between transmission of pulses in the sequence and sampling by the receiver sweeps over a range of delays. The receive timing signal sweeps over the range of delays in a sweep cycle such that pulses in the sequence are sampled at the pulse repetition rate, and with different delays in the range of delays to produce a sample signal representing magnitude of a received pulse in equivalent time. Automatic gain control circuitry in the receiver controls the magnitude of the equivalent time sample signal. A signal processor analyzes the sample signal to indicate the time-of-flight of the electromagnetic pulses in the sequence.

  16. [PROCESSING WEB TIME ENTRY FOR EMPLOYEES

    E-Print Network [OSTI]

    2012 [PROCESSING WEB TIME ENTRY FOR EMPLOYEES] #12;Page 1 of 35 Contents Beginning the Process ....................................................................................... 33 #12;Page 2 of 35 Beginning the Process... Web Time Entry is processed through Banweb, using your

  17. Timing Verification of Adaptive Integrated Circuits

    E-Print Network [OSTI]

    Kumar, Rohit

    2014-08-01T23:59:59.000Z

    . . . . . . . . . . . . . . . . . . . . . . . . 12 2.3 Hierarchical Timing Analysis . . . . . . . . . . . . . . . . . . . . . . . 17 2.4 Timing Yield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3. PROPOSED TECHNIQUES . . . . . . . . . . . . . . . . . . . . . . . . . 21 3... . . . . . . . . . . . . . . . . . . . . . . 10 2.2 Grid model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.3 Quadtree model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.4 Probabilisic event approach . . . . . . . . . . . . . . . . . . . . . . . 17 3...

  18. Can hedge funds time market liquidity?

    E-Print Network [OSTI]

    Cao, Charles

    We explore a new dimension of fund managers' timing ability by examining whether they can time market liquidity through adjusting their portfolios' market exposure as aggregate liquidity conditions change. Using a large ...

  19. Robert Heinecken's TV/Time Environment

    E-Print Network [OSTI]

    Pfahler, Zachary Austin

    2012-01-01T23:59:59.000Z

    Environment, for example, exploits the televisual medium inMedium is the Message:” The Aesthetics of TV/Time Environmentwith TV/Time Environment. 11 “The Medium is the Message:”

  20. Constant time algorithms in sparse graph model

    E-Print Network [OSTI]

    Nguyen, Huy Ngoc, Ph. D. Massachusetts Institute of Technology

    2010-01-01T23:59:59.000Z

    We focus on constant-time algorithms for graph problems in bounded degree model. We introduce several techniques to design constant-time approximation algorithms for problems such as Vertex Cover, Maximum Matching, Maximum ...