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Note: This page contains sample records for the topic "look-ahead driver feedback" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

Generalized Look-Ahead Methods for Computing Stationary Densities  

Science Conference Proceedings (OSTI)

The look-ahead estimator is used to compute densities associated with Markov processes via simulation. We study a framework that extends the look-ahead estimator to a broader range of applications. We provide a general asymptotic theory for the estimator, ... Keywords: densities, numerical methods, simulation

R. Anton Braun; Huiyu Li; John Stachurski

2012-08-01T23:59:59.000Z

2

Efficient Recursive Digital Filters using Combined Look-Ahead Denominator Distribution and Numerator Decomposition  

Science Conference Proceedings (OSTI)

This paper presents a new efficient method for designing stable look-ahead pipelined recursive digital filters with reduced multipliers. The multiplier savings are obtained by generating pipelined transfer functions which combine numerator decomposition ... Keywords: IIR digital filters, iteration bound, look ahead pipelining, resource minimisation

J. Living; M. Moniri; S. B. Tennakoon

2001-03-01T23:59:59.000Z

3

An Optimization Framework for Driver Feedback Systems  

SciTech Connect

Modern vehicles have sophisticated electronic control units that can control engine operation with discretion to balance fuel economy, emissions, and power. These control units are designed for specific driving conditions (e.g., different speed profiles for highway and city driving). However, individual driving styles are different and rarely match the specific driving conditions for which the units were designed. In the research reported here, we investigate driving-style factors that have a major impact on fuel economy and construct an optimization framework to optimize individual driving styles with respect to these driving factors. In this context, we construct a set of polynomial metamodels to reflect the responses produced in fuel economy by changing the driving factors. Then, we compare the optimized driving styles to the original driving styles and evaluate the effectiveness of the optimization framework. Finally, we use this proposed framework to develop a real-time feedback system, including visual instructions, to enable drivers to alter their driving styles in response to actual driving conditions to improve fuel efficiency.

Malikopoulos, Andreas [ORNL; Aguilar, Juan P. [Georgia Institute of Technology

2013-01-01T23:59:59.000Z

4

BPA Turns 75: A Look Back and a Look Ahead | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

BPA Turns 75: A Look Back and a Look Ahead BPA Turns 75: A Look Back and a Look Ahead BPA Turns 75: A Look Back and a Look Ahead September 28, 2012 - 11:59am Addthis To commemorate what BPA considers a 75-year partnership with the Columbia River, which is the cornerstone of BPA's relationship with the people and utilities of the Northwest, BPA releases the first video of a series detailing its history. Teresa Waugh Public Affairs Specialist, Bonneville Power Administration What is BPA? BPA markets wholesale electrical power from 31 federal hydro projects in the Columbia River Basin in the Pacific Northwest. BPA's service territory includes Idaho, Oregon, Washington, western Montana and small parts of eastern Montana, California, Nevada, Utah and Wyoming. Seventy five years ago last month, Franklin D. Roosevelt signed the

5

(Smart) Look-Ahead Arc Consistency and the Pursuit of CSP Tractability  

E-Print Network (OSTI)

(Smart) Look-Ahead Arc Consistency and the Pursuit of CSP Tractability Hubie Chen 1 and V#19. The constraint satisfaction problem (CSP) can be formu- lated as the problem of deciding, given a pair (A; B) of relational struc- tures, whether or not there is a homomorphism from A to B. Although the CSP is in general

Dalmau, Victor

6

Combined quasi-static backward modeling and look-ahead fuzzy control of vehicles  

Science Conference Proceedings (OSTI)

Vehicle modeling can play an important role in vehicle power train design, control and energy management investigation. This paper presents a method for vehicle power train modeling. The key feature of the method is its presentation of the dynamic of ... Keywords: Fuzzy logic, Look-ahead controller, Power train vehicle modeling, Quasi-static backward facing, Simulation

Behnam Ganji; Abbas Z. Kouzani

2012-01-01T23:59:59.000Z

7

A New Look Ahead Technique for Customized Testing in Digital Microfluidic Biochips  

Science Conference Proceedings (OSTI)

Digital Micro fluidic biochips have been developed as a promising platform for Lab-on-chip systems that manipulate individual droplet of chemicals on a 2D planar array of electrodes. Due to the significance of the correctness of the results -- fault ... Keywords: Look ahead testing, Digital microfluidic biochips, structural test, completion time, routing algorithms, resource utilization

Pranab Roy; Hafizur Rahaman; Parthasarthi Dasgupta; Bhargab B. B. Bhattacharya

2012-11-01T23:59:59.000Z

8

Analyzing Vehicle Fuel Saving Opportunities through Intelligent Driver Feedback  

DOE Green Energy (OSTI)

Driving style changes, e.g., improving driver efficiency and motivating driver behavior changes, could deliver significant petroleum savings. This project examines eliminating stop-and-go driving and unnecessary idling, and also adjusting acceleration rates and cruising speeds to ideal levels to quantify fuel savings. Such extreme adjustments can result in dramatic fuel savings of over 30%, but would in reality only be achievable through automated control of vehicles and traffic flow. In real-world driving, efficient driving behaviors could reduce fuel use by 20% on aggressively driven cycles and by 5-10% on more moderately driven trips. A literature survey was conducted of driver behavior influences, and pertinent factors from on-road experiments with different driving styles were observed. This effort highlighted important driver influences such as surrounding vehicle behavior, anxiety over trying to get somewhere quickly, and the power/torque available from the vehicle. Existing feedback approaches often deliver efficiency information and instruction. Three recommendations for maximizing fuel savings from potential drive cycle improvement are: (1) leveraging applications with enhanced incentives, (2) using an approach that is easy and widely deployable to motivate drivers, and (3) utilizing connected vehicle and automation technologies to achieve large and widespread efficiency improvements.

Gonder, J.; Earleywine, M.; Sparks, W.

2012-06-01T23:59:59.000Z

9

Final Report on the Fuel Saving Effectiveness of Various Driver Feedback Approaches  

SciTech Connect

This final report quantifies the fuel-savings opportunities from specific driving behavior changes, identifies factors that influence drivers' receptiveness to adopting fuel-saving behaviors, and assesses various driver feedback approaches.

Gonder, J.; Earleywine, M.; Sparks, W.

2011-03-01T23:59:59.000Z

10

Analyzing Vehicle Fuel Saving Opportunities through Intelligent Driver Feedback  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

NREL/CP-5400-53864.Posted with permission. NREL/CP-5400-53864.Posted with permission. Presented at the 2012 SAE World Congress, 24-26 April 2012, Detroit, Michigan 2012-01-0494 Analyzing Vehicle Fuel Saving Opportunities Published through Intelligent Driver Feedback 04/16/2012 Jeffrey Gonder, Matthew Earleywine and Witt Sparks National Renewable Energy Laboratory doi:10.4271/2012-01-0494 ABSTRACT While it is well known that "MPG will vary" based on how one drives, little independent research exists on the aggregate

11

NETL: News Release - DOE-Funded Technology That 'Looks Ahead' of Drillbit  

NLE Websites -- All DOE Office Websites (Extended Search)

6, 2006 6, 2006 DOE-Funded Technology That 'Looks Ahead' of Drillbit Commercialized Revolutionary 'Smart' Drill Pipe Creates Downhole Internet WASHINGTON, DC - A U.S. Department of Energy-funded technology that establishes a "downhole Internet" for drilling oil and natural gas wells is now available for commercial use. The technology turns ordinary drill pipe into a highway for transmitting drilling and geological formation data at blazing speed from the bottom of a well to the surface and vice-versa. The potential benefits of the new technology include decreased drilling costs, improved safety, and reduced environmental impacts of drilling. Grant Prideco's announcement of the commercial launch of its IntelliServ Network and related Intellipipe(tm) capped 5 years of research sponsored by DOE and managed by DOE's National Energy Technology Laboratory.

12

Look-ahead voltage and load margin contingency selection functions for large-scale power systems  

SciTech Connect

Given the current operating condition (obtained from the real-time data), the near-term load demand at each bus (obtained from short-term load forecast), and the generation dispatch (say, based on economic dispatch), the authors present in this paper a load margin measure (MW and/or MVAR) to assess the system`s ability to withstand the forecasted load and generation variations. The authors also present a method to predict near-term system voltage profiles. The proposed look-ahead measure and the proposed voltage prediction are then applied to contingency selections for the near-term power system in terms of load margins to collapse and of the bus voltage magnitudes. They evaluate the proposed load-ahead measure and the voltage profile prediction on several power systems including a 1169-bus power system with 53 contingencies with promising results.

Chiang, H.D.; Wang, C.S.; Flueck, A.J. [Cornell Univ., Ithaca, NY (United States). School of Electrical Engineering

1997-02-01T23:59:59.000Z

13

A genetic algorithm-based method for look-ahead scheduling in the finishing phase of construction projects  

Science Conference Proceedings (OSTI)

Genetic algorithms (GAs) are widely used in finding solutions for resource constrained multi-project scheduling problems (RCMPSP) in construction projects. In the finishing phase of a complex construction project, each room forms a confined space for ... Keywords: Genetic algorithm (GA), Look-ahead schedule (LAS), RCMPSP, RCPSP, Simulation

Ning Dong; Dongdong Ge; Martin Fischer; Zuhair Haddad

2012-10-01T23:59:59.000Z

14

The wind power probability density forecast problem can be formulated as: forecast the wind power pdf at time step t for each look-ahead time step t+k of a given time-horizon  

E-Print Network (OSTI)

The wind power probability density forecast problem can be formulated as: forecast the wind power forecasted for look-ahead time t+k, xt is a set of explanatory variables available at time step t, fP,x is the joint density function of the forecasted wind power and explanatory variables, fX is the density

Kemner, Ken

15

looking ahead to fiscal year 2011 budget  

Science Conference Proceedings (OSTI)

As was the custom in the previous Administration, the Office of Management and Budget and the White House Office of Science and Technology Policy have ...

16

Looking Ahead – Biofuels, H2, & Vehicles  

Biogas Lipids/ Oils. Gasification. Pyrolysis & Liquefaction Hydrolysis Wide Range of Biofuel Technologies * Blending Products Anaerobic Digestion Upgrading ...

17

Utilization of Fuel Consumption Data in an Ecodriving Incentive System for Heavy-Duty Vehicle Drivers  

Science Conference Proceedings (OSTI)

Driver behavior is one of the greatest factors determining fuel consumption and, thus, carbon dioxide emissions from a heavy-duty vehicle. The difference in fuel consumption can be up to 30%, depending on the driver. Education, monitoring, and feedback ...

Heikki Liimatainen

2011-12-01T23:59:59.000Z

18

A Look Ahead at Demand Response in New England  

Science Conference Proceedings (OSTI)

The paper describes the demand response programs developed and in operation in New England, and the revised designs for participation in the forward capacity market. This description will include how energy efficiency, demand-side resources, and distributed generation are eligible to participate in this new forward capacity market. The paper will also discuss various methods that can be used to configure and communicate with demand response resources and important concerns in specifying interfaces that accommodate multiple technologies and allow technology choice and evolution.

Burke, Robert B.; Henderson, Michael I.; Widergren, Steven E.

2008-08-01T23:59:59.000Z

19

Letter Report: Looking Ahead at Nuclear Fuel Resources  

SciTech Connect

The future of nuclear energy and its ability to fulfill part of the world’s energy needs for centuries to come depend on a reliable input of nuclear fuel, either thorium or uranium. Obviously, the present nuclear fuel cycle is completely dependent on uranium. Future thorium cycles will also depend on 235U or fissile isotopes separated from used fuel to breed 232Th into fissile 233U. This letter report discusses several emerging areas of scientific understanding and technology development that will clarify and enable assured supplies of uranium and thorium well into the future. At the most fundamental level, the nuclear energy community needs to appreciate the origins of uranium and thorium and the processes of planetary accretion by which those materials have coalesced to form the earth and other planets. Secondly, the studies of geophysics and geochemistry are increasing understanding of the processes by which uranium and thorium are concentrated in various locations in the earth’s crust. Thirdly, the study of neutrinos and particularly geoneutrinos (neutrinos emitted by radioactive materials within the earth) has given an indication of the overall global inventories of uranium and thorium, though little indication for those materials’ locations. Crustal temperature measurements have also given hints of the vertical distribution of radioactive heat sources, primarily 238U and 232Th, within the continental crust. Finally, the evolving technologies for laser isotope separation are indicating methods for reducing the energy input to uranium enrichment but also for tailoring the isotopic vectors of fuels, burnable poisons and structural materials, thereby adding another tool for dealing with long-term waste management.

J. Stephen Herring

2013-09-01T23:59:59.000Z

20

A&F: Revisiting 2009, Looking Ahead to 2010  

E-Print Network (OSTI)

Director ­ Accomplishments · 2009 Campus Historic Preservation Plan update · Low Speed Vehicle (LSV) Safety and Electrical Substation and Infrastructure projects to fixed rate bonds from variable rate bonds to reduce

Löffler, Frank E.

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


21

Underground coal mining technology: An overview and a look ahead  

SciTech Connect

Underground coal mining systems have kept pace with developments that have occurred in other types of mining. A diversified group of machines are now available with high horsepower motors, built-in microprocessor technology, and numerous options to satisfy miners' needs in various geological environments. The results will be a greater degree of mechanization and recovery of coal from inclined seams, thins seams, and seams mined in lifts from shallow as well as deeper deposits. This article is based on a general survey carried out by the authors to determine the current status of mechanization and systems development in underground coal mining. It indicates that the next two decades will see increasing use of longwall mining, which has already reached a high degree of sophistication.

Singhal, R.K. (Canmet Coal Research Lab., Devon, Alberta (CA)); Fytas, K. (Laval Univ., Quebec City, PQ (Canada)); Lama, R.D. (Kembla Coal and Coke Proprietary Ltd., Wollongong, NSW (AU))

1989-09-01T23:59:59.000Z

22

Retail Price Drivers and their Financial Consequences  

E-Print Network (OSTI)

making the data available. Retail Price Drivers and their Financial Consequences What are the drivers of retailers ' prices and what, if any, are their financial consequences? The results of a large-scale quantitative analysis show that retail prices are mainly driven by pricing history (50%), acquisition costs (25%), and demand feedback (12.5%). In contrast to pricing history, demand-based pricing is associated with higher retailer (and manufacturer) financial performance. The remaining price drivers: category management, store traffic, and store brand performance, affect manufacturer and retailer performance in more complex ways.

Shuba Srinivasan; Koen Pauwels; Vincent Nijs; Mike Hanssens; Carl Mela; Scott Neslin For Comments; Suggestions The Paper

2003-01-01T23:59:59.000Z

23

Prior BG/P Driver Information | Argonne Leadership Computing Facility  

NLE Websites -- All DOE Office Websites (Extended Search)

Intrepid/Challenger/Surveyor Intrepid/Challenger/Surveyor Introducing Challenger Quick Reference Guide System Overview BG/P Driver Information Prior BG/P Driver Information Internal Networks Machine Environment FAQs Block and Job State Documentation Machine Partitions Data Transfer Data Storage & File Systems Compiling and Linking Queueing and Running Jobs Debugging and Profiling Performance Tools and APIs IBM References Software and Libraries Tukey Eureka / Gadzooks Policies Documentation Feedback Please provide feedback to help guide us as we continue to build documentation for our new computing resource. [Feedback Form] Prior BG/P Driver Information Prior BGP Driver Information This page contains information about the drivers and efixes currently installed on the ALCF resources Intrepid and Surveyor, as well as

24

Drivers and Resources  

NLE Websites -- All DOE Office Websites (Extended Search)

Drivers and Resources Regulatory Drivers National Laws Executive Orders DOE Orders and Directives Information Resources DOE P2 Web Sites Other P2 Web Sites Environmental...

25

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

71 - 31280 of 31,917 results. 71 - 31280 of 31,917 results. Download CX-006879: Categorical Exclusion Determination Geothermal Incentive Program CX(s) Applied: A1, B5.1 Date: 09/30/2011 Location(s): Wallingford, Connecticut Office(s): Energy Efficiency and Renewable Energy http://energy.gov/nepa/downloads/cx-006879-categorical-exclusion-determination Download CX-006901: Categorical Exclusion Determination Look-Ahead Driver Feedback and Powertrain Management CX(s) Applied: B3.6 Date: 09/29/2011 Location(s): Southfield, Michigan Office(s): Energy Efficiency and Renewable Energy http://energy.gov/nepa/downloads/cx-006901-categorical-exclusion-determination Download CX-006904: Categorical Exclusion Determination Look-Ahead Driver Feedback and Powertrain Management CX(s) Applied: B3.6 Date: 09/29/2011

26

Categorical Exclusion (CX) Determinations By Date | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

September 29, 2011 September 29, 2011 CX-006906: Categorical Exclusion Determination Electricity Delivery and Energy Reliability Assistance to State Regulatory Utility Commissioners CX(s) Applied: A9, A11, A12 Date: 09/29/2011 Location(s): District of Columbia Office(s): Electricity Delivery and Energy Reliability, National Energy Technology Laboratory September 29, 2011 CX-006904: Categorical Exclusion Determination Look-Ahead Driver Feedback and Powertrain Management CX(s) Applied: B3.6 Date: 09/29/2011 Location(s): Oak Ridge, Tennessee Office(s): Energy Efficiency and Renewable Energy September 29, 2011 CX-006903: Categorical Exclusion Determination Look-Ahead Driver Feedback and Powertrain Management CX(s) Applied: B3.6 Date: 09/29/2011 Location(s): Ann Arbor, Michigan Office(s): Energy Efficiency and Renewable Energy, National Energy

27

Your Feedback  

NLE Websites -- All DOE Office Websites (Extended Search)

Your Feedback Participate with us Participate Share your Stories Museum Fan Downloads invisible utility element Tell us more Please tell us more about your experiences with us. We...

28

Double domino driver  

DOE Patents (OSTI)

The double domino driver is fully differential and is optimized for low switching noise and power. The noise behavior and power dissipation is improved by limiting the signal swing. The domino driver consists of a combination of mini drivers, each of which is switched on in two steps. In the first step a voltage equal to a fraction of the supply voltage propagates through the chain of mini drivers and turn them partially on. In the second step the voltage is increased to its maximum value and is made to propagate through the chain, turning the mini drivers completely on. The rise and fall time of the output signal can be increased by adding mini drivers. For a 5 volt supply voltage with 5 mini drivers the switching noise in decreased to levels less than 100 micro volts. The power dissipation with this driver is least as compared to ECL and other logic systems. The double domino driver is useful in communication and VLSI systems.

Vanstraelen, G.F.

1992-01-01T23:59:59.000Z

29

The effect of cognitive load on adaptation to differences in steering wheel force feedback level  

Science Conference Proceedings (OSTI)

In an earlier study it was found that drivers can adjust quickly to different force feedback levels on the steering wheel, even for such extreme levels as zero feedback. It was hypothesized that, due to lack of cognitive load, participants could easily ... Keywords: lane keeping, steer-by-wire, steering feedback, steering systems

Swethan Anand, Jacques Terken, Jeroen Hogema

2013-10-01T23:59:59.000Z

30

DOE DRIVER LISTING  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DRIVER LISTING DRIVER LISTING 1. The lines that have been redlined are orders that have been cancelled and not replaced with anything else. 2. This list was current as of 1/1/98. DRIVERTYPE DRIVERCODE TITLE REV_DATE EO ACQUISITION EO 12873, Federal Acquisition, Recycling, and Waste Prevention 09/25/1994 EO ALTERNATIVE FUEL EO 12844, Federal Use of Alternative Fueled Vehicles 09/25/1994 EO COMPUTER EO 12845, Requiring Agencies to Purchase Energy Efficient Compute 09/25/1994 EO CULTURAL EO 11593, Protection & Enhancement of Cultural Environment 09/25/1994 EO ENV DAMAGE EO 12286, Response to Environmental Damage 09/25/1994 EO ENV QUALITY EO 11991, Protect/Enhancement of Environmental Quality 09/25/1994 EO ENV SAFEGUARDS EO 12342, Env. Safeguards/Animal Damage Control on Federal Lands 09/25/1994

31

Send Feedback - Energy Innovation Portal  

Bookmark Send Feedback - Energy Innovation Portal on Google; Bookmark Send Feedback - Energy Innovation Portal on Delicious; Rank Send Feedback ...

32

Quantifying Carbon Cycle Feedbacks  

Science Conference Proceedings (OSTI)

Perturbations to the carbon cycle could constitute large feedbacks on future changes in atmospheric CO2 concentration and climate. This paper demonstrates how carbon cycle feedback can be expressed in formally similar ways to climate feedback, ...

J. M. Gregory; C. D. Jones; P. Cadule; P. Friedlingstein

2009-10-01T23:59:59.000Z

33

Looking Ahead - Biofuels, H2, & Vehicles: 21st Industry Growth Forum  

DOE Green Energy (OSTI)

This presentation on the future of biofuels, hydrogen, and hybrid vehicles was presented at NREL's 21st Industry Growth Forum in Denver, Colorado, on October 28, 2008.

Gardner, D.

2008-10-28T23:59:59.000Z

34

Dynamic scheduling II: look-ahead strategies for controlling batch operations in industry — an overview  

Science Conference Proceedings (OSTI)

Batching jobs in a manufacturing system is a very common policy in most industries. Main reasons for batching are avoidance of set ups and/or facilitation of material handling. Examples of batch-wise production systems are ovens found in aircraft industry ...

Durk-Jouke van der Zee

2003-12-01T23:59:59.000Z

35

k-Depth Look-Ahead Task Scheduling in Network of Heterogeneous Processors  

Science Conference Proceedings (OSTI)

The objective of the task scheduling is to achieve the minimum execution time of all the tasks with their precedence requirements satisfied. Although several task scheduling heuristics for the heterogeneous environment have been presented in the literature, ...

Namyoon Woo; Heon Young Yeom

2002-01-01T23:59:59.000Z

36

Approaches to enhance driver situational assessment aids  

E-Print Network (OSTI)

Collision warning systems encounter a fundamental trade-off between providing the driver more time in which to respond and alerting the driver unnecessarily. The probability that a driver successfully avoids a hazard ...

Jones, Eric M. (Eric Michael)

2007-01-01T23:59:59.000Z

37

Regulatory Drivers | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Regulatory Drivers Regulatory Drivers Regulatory Drivers Statutes and Regulations Relating to Legacy Management Code of Federal Regulations (CFR) Title 10: Energy "Licensing Requirements for Land Disposal of Radioactive Waste," 10 CFR 61 "Occupational Radiation Protection," 10 CFR 835 Title 40: Protection of Environment "National Primary Drinking Water Regulations," 40 CFR 141 "Standards for Owners and Operators of Hazardous Waste Treatment, Storage and Disposal Facilities," 40 CFR 264 "National Oil and Hazardous Substances Pollution Contingency Plan," 40 CFR 300 Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA)/Resource Conservation and Recovery Act (RCRA) "Comprehensive Environmental Response, Compensation, and Liability

38

Truck Driver Scheduling in the European Union  

Science Conference Proceedings (OSTI)

Since April 2007 working hours of truck drivers in the European Union are controlled by regulation (EC) No. 561/2006. According to the new regulation, road transport undertakings must organise the work of drivers in a way that drivers are able to comply ... Keywords: drivers' working hours, regulation (EC) No. 561/2006, vehicle scheduling

Asvin Goel

2010-11-01T23:59:59.000Z

39

UWB dual burst transmit driver  

SciTech Connect

A dual burst transmitter for ultra-wideband (UWB) communication systems generates a pair of precisely spaced RF bursts from a single trigger event. An input trigger pulse produces two oscillator trigger pulses, an initial pulse and a delayed pulse, in a dual trigger generator. The two oscillator trigger pulses drive a gated RF burst (power output) oscillator. A bias driver circuit gates the RF output oscillator on and off and sets the RF burst packet width. The bias driver also level shifts the drive signal to the level that is required for the RF output device.

Dallum, Gregory E. (Livermore, CA); Pratt, Garth C. (Discovery Bay, CA); Haugen, Peter C. (Livermore, CA); Zumstein, James M. (Livermore, CA); Vigars, Mark L. (Livermore, CA); Romero, Carlos E. (Livermore, CA)

2012-04-17T23:59:59.000Z

40

Feedback | Open Energy Information  

Open Energy Info (EERE)

Feedback Jump to: navigation, search Retrieved from "http:en.openei.orgwindex.php?titlePrueba2&oldid313186" Category: En Espaol What links here Related changes Special...

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


41

OpenEI Community - feedback  

Open Energy Info (EERE)

http:en.openei.orgcommunitytaxonomyterm2200 en Geothermal Stakeholder Feedback on the GRR http:en.openei.orgcommunitybloggeothermal-stakeholder-feedback-grr

As we...

42

Global climate feedbacks  

SciTech Connect

The important physical, chemical, and biological events that affect global climate change occur on a mesoscale -- requiring high spatial resolution for their analysis. The Department of Energy has formulated two major initiatives under the US Global Change Program: ARM (Atmospheric Radiation Measurements), and CHAMMP (Computer Hardware Advanced Mathematics and Model Physics). ARM is designed to use ground and air-craft based observations to document profiles of atmospheric composition, clouds, and radiative fluxes. With research and models of important physical processes, ARM will delineate the relationships between trace gases, aerosol and cloud structure, and radiative transfer in the atmosphere, and will improve the parameterization of global circulation models. The present GCMs do not model important feedbacks, including those from clouds, oceans, and land processes. The purpose of this workshop is to identify such potential feedbacks, to evaluate the uncertainties in the feedback processes (and, if possible, to parameterize the feedback processes so that they can be treated in a GCM), and to recommend research programs that will reduce the uncertainties in important feedback processes. Individual reports are processed separately for the data bases.

Manowitz, B.

1990-10-01T23:59:59.000Z

43

Resonant Power MOSFET Driver for LED Lighting.  

E-Print Network (OSTI)

??LED lighting has a promising future in consumer markets. Many researchers have conducted researches to improve the LED driver efficiencies. In this thesis, a computer… (more)

Tuladhar, Looja R.

2009-01-01T23:59:59.000Z

44

Efficient Driver for Dimmable White LED Lighting.  

E-Print Network (OSTI)

??A high efficiency driver circuit is proposed for Light Emitting Diode (LED) lamps with dimming feature. The current regulation is accomplished by processing partial power… (more)

Yang, Wen-ching

2011-01-01T23:59:59.000Z

45

DOE Driver Listing | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE Driver Listing More Documents & Publications Completed EISs Technical Standards, DOE Orders and Applicable CFRsDEAR Crosswalk - February 2, 2002 WaiversByPetitioner.pdf...

46

STABILIZED FEEDBACK AMPLIFIER  

DOE Patents (OSTI)

Negative feedback amplifiers, and particularly a negative feedback circuit which is economical on amode power consumption, are described. Basically, the disclosed circuit comprises two tetrode tubes where the output of the first tube is capacitamce coupled to the grid of the second tube, which in turn has its plate coupled to the cathode of the first tube to form a degenerative feedback circuit. Operating potential for screen of the second tube is supplied by connecting the cathode resistor of the first tube to the screen, while the screen is by-passed to the cathode of its tube for the amplified frequencies. Also, the amplifier incorporates a circuit to stabilize the transconductance of the tubes by making the grid potential of each tube interdependent on anode currents of both lubes by voltage divider circuitry.

Fishbine, H.L.; Sewell, C. Jr.

1957-08-01T23:59:59.000Z

47

How Competitive Market Dynamics Affect Coal, Nuclear and Gas Generation and Fuel Use -- A 10-Year Look Ahead  

Science Conference Proceedings (OSTI)

This report, the fourth in a series by EPRI and GRI addressing power industry deregulation, examines how restructuring is unleashing a new wave of merchant gas-fired plants. This phenomenon can lead to substantial regional changes in generation and fuel use, energy prices, and profitability-changes that have eluded analysts to date. Focusing on several regions in depth, this report breaks new ground in understanding the effects of turbulent, competitive market dynamics.

1999-05-22T23:59:59.000Z

48

Fast track article: Looking ahead in pervasive computing: Challenges and opportunities in the era of cyber-physical convergence  

Science Conference Proceedings (OSTI)

The physical environment is becoming more and more saturated with computing and communication entities that interact among themselves, as well as with users: virtually everything will be enabled to source information and respond to appropriate stimuli. ... Keywords: Cyber-physical convergence, Cyber-world security, Data storage, Opportunistic networking and computing, Pervasive computing, Quality of Information, Self-*, Social networks, Wearable computing

Marco Conti; Sajal K. Das; Chatschik Bisdikian; Mohan Kumar; Lionel M. Ni; Andrea Passarella; George Roussos; Gerhard Tröster; Gene Tsudik; Franco Zambonelli

2012-02-01T23:59:59.000Z

49

Looking Ahead with a Look Back at the 2nd Annual ARPA-E Energy Innovation Summit  

Energy.gov (U.S. Department of Energy (DOE))

If you missed the 2nd Annual ARPA-E Energy Innovation Summit featuring some of today's most cutting-edge energy technologies, video from some big names who spoke is available here.

50

A look-ahead synthesis technique with backtracking for switching activity reduction in low power high-level synthesis  

Science Conference Proceedings (OSTI)

Research work done has shown that power consumption in digital integrated circuits can be effectively reduced by reducing the switching activity occurring on the functional modules. High-level synthesis of digital integrated circuits for low power often ... Keywords: High-level synthesis, Low power, Simultaneous scheduling and binding, Switching activity

Xianwu Xing; Ching Chuen Jong

2007-04-01T23:59:59.000Z

51

NOAA aeronomy laboratory quadrennial report, 1989-1992: A summary of the past four years and a look ahead  

Science Conference Proceedings (OSTI)

The NOAA Aeronomy Laboratory Quadrennial Report for 1989-1992 is presented. Atmospheric science issues of concern to the Laboratory are discussed. Research conducted by the Laboratory from 1989 to 1992 is described. Research efforts focused on ozone chemistry in the troposphere, the stratospheric ozone layer, and greenhouse gases and climatic change.

Not Available

1993-02-01T23:59:59.000Z

52

A Framework of Incorporating Spatio-temporal Forecast in Look-ahead Grid Dispatch with Photovoltaic Generation  

E-Print Network (OSTI)

Increasing penetration of stochastic photovoltaic (PV) generation into the electric power system poses significant challenges to system operators. In the thesis, we evaluate the spatial and temporal correlations of stochastic PV generation at multiple sites. Given the unique spatial and temporal correlation of PV generation, an optimal data-driven forecast model for short-term PV power is proposed. This model leverages both spatial and temporal correlations among neighboring solar sites, and is shown to have improved performance compared with conventional persistent model. The tradeoff between communication cost and improved forecast quality is studied using realistic data sets collected from California and Colorado. n IEEE 14 bus system test case is used to quantify the value of improved forecast quality through the reduction of system dispatch cost. The Modified spatio-temporal forecast model which has the least forecast PV overestimate percentage shows the best performance in the dispatch cost reduction.

Yang, Chen

2013-05-01T23:59:59.000Z

53

IEP - Carbon Dioxide: Regulatory Drivers  

NLE Websites -- All DOE Office Websites (Extended Search)

IEP - Carbon Dioxide (CO2) Regulatory Drivers In July 7, 2009 testimony before the U.S. Senate Committee on Environment and Public Works, Secretary of Energy Steven Chu made the following statements:1 "...Overwhelming scientific evidence shows that carbon dioxide from human activity has increased the atmospheric level of CO2 by roughly 40 percent, a level one- third higher than any time in the last 800,000 years. There is also a consensus that CO2 and other greenhouse gas emissions have caused our planet to change. Already, we have seen the loss of about half of the summer arctic polar ice cap since the 1950s, a dramatically accelerating rise in sea level, and the loss of over two thousand cubic miles of glacial ice, not on geological time scales but over a mere hundred years.

54

Nonlinearity of Carbon Cycle Feedbacks  

Science Conference Proceedings (OSTI)

Coupled climate–carbon models have shown the potential for large feedbacks between climate change, atmospheric CO2 concentrations, and global carbon sinks. Standard metrics of this feedback assume that the response of land and ocean carbon uptake ...

Kirsten Zickfeld; Michael Eby; H. Damon Matthews; Andreas Schmittner; Andrew J. Weaver

2011-08-01T23:59:59.000Z

55

In-car Airway Options for NASCAR Drivers  

E-Print Network (OSTI)

Medicine Background: “Stock car” drivers may require anpresentation pregnancy. In-car Airway Options for NASCARhelmeted, and apneic stock car driver simulation model.

Dyreyes, Jonathan Q; Grange, Jeff; Smith, Dustin; Jin, Peter; Guldner, Greg

2008-01-01T23:59:59.000Z

56

Enhanced Driver Requirements for WIPP Shipments - Fact Sheet  

NLE Websites -- All DOE Office Websites (Extended Search)

. a critical step toward solving the nation's nuclear waste disposal problem Enhanced Driver Requirements for WIPP Shipments Waste Isolation Pilot Plant (WIPP), Driver Hiring...

57

The Universe Adventure - Feedback  

NLE Websites -- All DOE Office Websites (Extended Search)

Contact Us Contact Us First Name (optional): Simpson Last Name (optional): Homer E-Mail Address (if you would like to hear back from us): How can we contact you? Occupation (high school student, physics teacher, cosmologist, et cetera): What is your occupation? Type: Type of Feedback Organization/Format Content Fundamentals of Cosmology Evidence for the Big Bang Eras of the Cosmos The Final Frontier Glossary Other Comments and Feedback: We appreciate your comments! - The Universe Adventure Team submit reset [ top ] Site Content National Science Foundation Department of Energy S.D. Bechtel, Jr. Foundation [ Site Map ] optimized for Firefox [ UC Berkeley ] [ UC Berkeley Physics ] [ Particle Adventure! ] [ Contact Us ] Copyright © 2005 Lawrence Berkeley National Laboratory Physics Division |

58

DISTRIBUTED AMPLIFIER INCORPORATING FEEDBACK  

DOE Patents (OSTI)

An improved distributed amplifier system employing feedback for stabilization is presented. In accordance with the disclosed invention, a signal to be amplified is applled to one end of a suitable terminated grid transmission line. At intervals along the transmission line, the signal is fed to stable, resistance-capacitance coupled amplifiers incorporating feedback loops therein. The output current from each amplifier is passed through an additional tube to minimize the electrostatic capacitance between the tube elements of the last stage of the amplifier, and fed to appropriate points on an output transmission line, similar to the grid line, but terminated at the opposite (input) end. The output taken from the unterminated end of the plate transmission line is proportional to the input voltage impressed upon the grid line.

Bell, P.R. Jr.

1958-10-21T23:59:59.000Z

59

SERVOMECHANISMS WITH FORCE FEEDBACK  

SciTech Connect

A class of linear proportional servomechanisms is examined in which an electrical signal proportional to output force is used to improve performance. The effect of this "force feedback" on a positional servomechanism is analyzed as well as the effect on a special type of servomechanism which reflects load forces back to the input. This latter type of servomechanism is called "force reflecting." Laboratory models of these servormechanisms were designed and constructed, and experimental data are presented in support of the analysis. (auth)

Arzbaecher, R.C.

1960-05-01T23:59:59.000Z

60

NPP and Driver Data for Ecosystem  

NLE Websites -- All DOE Office Websites (Extended Search)

EMDI Data Revised Data Set: NPP Multi-Biome: NPP and Driver Data for Ecosystem Model-Data Intercomparison Effective Date of Revision: June 17, 2004 Data Set Citation: Olson, R. J.,...

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


61

A 3 MEGAJOULE HEAVY ION FUSION DRIVER  

E-Print Network (OSTI)

Research, Office of Inertia! Fusion, Research Division ofA 3 MEGAJOULE HEAVY ION FUSION DRIVER* A. Faltens, E. Hoyer,Research, Office of Inertial Fusion, Research Division of

Faltens, A.

2010-01-01T23:59:59.000Z

62

Physics at a new Fermilab proton driver  

SciTech Connect

In 2004, motivated by the recent exciting developments in neutrino physics, the Fermilab Long Range Planning Committee identified a new high intensity Proton Driver as an attractive option for the future. At the end of 2004 the APS ''Study on the Physics of Neutrinos'' concluded that the future US neutrino program should have, as one of its components, ''A proton driver in the megawatt class or above and neutrino superbeam with an appropriate very large detector capable of observing Cp violation and measuring the neutrino mass-squared differences and mixing parameters with high precision''. The presently proposed Fermilab Proton Driver is designed to accomplish these goals, and is based on, and would help develop, Linear Collider technology. In this paper the Proton Driver parameters are summarized, and the potential physics program is described.

Geer, Steve; /Fermilab

2006-04-01T23:59:59.000Z

63

Nonlinear continuous feedback controllers  

E-Print Network (OSTI)

Packet-switched communication networks such as today's Internet are built with several interconnected core and distribution packet forwarding routers and several sender and sink transport agents. In order to maintain stability and avoid congestion collapse in the network, the sources control their rate behavior and voluntarily adjust their sending rates to accommodate other sources in the network. In this thesis, we study one class of sender rate control that is modeled using continuous first-order differential equation of the sending rates. In order to adjust the rates appropriately, the network sends continuous packet-loss feedback to the sources. We study a form of closed-loop feedback congestion controllers whose rate adjustments exhibit a nonlinear form. There are three dimensions to our work in this thesis. First, we study the network optimization problem in which sources choose utilities to maximize their underlying throughput. Each sender maximizes its utility proportional to the throughput achieved. In our model, sources choose a utility function to define their level of satisfaction of the underlying resource usages. The objective of this direction is to establish the properties of source utility functions using inequality constrained bounded sets and study the functional forms of utilities against a chosen rate differential equation. Second, stability of the network and tolerance to perturbation are two essential factors that keep communication networks operational around the equilibrium point. Our objective in this part of the thesis is to analytically understand the existence of local asymptotic stability of delayed-feedback systems under homogeneous network delays. Third, we propose a novel tangential controller for a generic maximization function and study its properties using nonlinear optimization techniques. We develop the necessary theoretical background and the properties of our controller to prove that it is a better rate adaptation algorithm for logarithmic utilities compared to the well-studied proportional controllers. We establish the asymptotic local stability of our controller with upper bounds on the increase / decrease gain parameters.

Sitharaman, Sai Ganesh

2005-05-01T23:59:59.000Z

64

Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Techniques for Drivers Techniques for Drivers to Conserve Fuel to someone by E-mail Share Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel on Facebook Tweet about Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel on Twitter Bookmark Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel on Google Bookmark Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel on Delicious Rank Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel on Digg Find More places to share Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel on AddThis.com... More in this section... Idle Reduction Parts & Equipment Maintenance Driving Behavior Management Strategies Driver Techniques Fleet Rightsizing

65

IEP - Advanced NOx Emissions Control: Regulatory Drivers  

NLE Websites -- All DOE Office Websites (Extended Search)

IEP - Advanced NOx Emissions Control Regulatory Drivers Regulatory Drivers for Existing Coal-Fired Power Plants Regulatory and legislative requirements have predominantly driven the need to develop NOx control technologies for existing coal-fired power plants. The first driver was the Title IV acid rain program, established through the 1990 Clean Air Act Amendments (CAAA). This program included a two-phase strategy to reduce NOx emissions from coal-fired power plants – Phase I started January 1, 1996 and Phase II started January 1, 2000. The Title IV NOx program was implemented through unit-specific NOx emission rate limits ranging from 0.40 to 0.86 lb/MMBtu depending on the type of boiler/burner configuration and based on application of LNB technology.

66

DOE Emergency Exercise Feedback Form | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE Emergency Exercise Feedback Form DOE Emergency Exercise Feedback Form Emergency Exercise Feedback Form DOE Emergency Exercise Feedback Form More Documents & Publications...

67

HVAC Sensors, Controls, and Human Feedback Interfaces  

NLE Websites -- All DOE Office Websites (Extended Search)

HVAC Sensors, HVAC Sensors, Controls, and Human Controls, and Human Feedback Interfaces Feedback Interfaces April 26, 2010 Dr. Amr Gado Emerson Climate Technologies Heating And...

68

Ocean Feedback Form | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Feedback Form Ocean Data Tools Technical Guide Map Gallery Regional Planning Feedback Ocean You are here Data.gov Communities Ocean Comments or Suggestions Name * Email Topic...

69

Addressing Inappropriate Driver Behavior at Rail-Highway Crossings  

E-Print Network (OSTI)

Ragland. Driver Behavior at Rail Crossings. Draft Report, 5.T.G. Driver Behavior at Rail- Highway Grade Crossings: Aof Locomotive Horns at Highway-Rail Grade Crossings: Final

Cooper, Douglas L.; Ragland, David R

2008-01-01T23:59:59.000Z

70

Detection of Driver Fatigue Caused by Sleep Deprivation  

E-Print Network (OSTI)

This paper aims to provide reliable indications of driver drowsiness based on the characteristics of driver-vehicle interaction. A test bed was built under a simulated driving environment, and a total of 12 subjects ...

Coughlin, Joseph F.

71

Detecting driver phone use leveraging car speakers  

Science Conference Proceedings (OSTI)

This work addresses the fundamental problem of distinguishing between a driver and passenger using a mobile phone, which is the critical input to enable numerous safety and interface enhancements. Our detection system leverages the existing car stereo ... Keywords: acoustic ranging, bluetooth, car speakers, driving safety, location classification, smartphone

Jie Yang; Simon Sidhom; Gayathri Chandrasekaran; Tam Vu; Hongbo Liu; Nicolae Cecan; Yingying Chen; Marco Gruteser; Richard P. Martin

2011-09-01T23:59:59.000Z

72

feedback | OpenEI Community  

Open Energy Info (EERE)

7 7 Varnish cache server Home Groups Community Central Green Button Applications Developer Utility Rate FRED: FRee Energy Database More Public Groups Private Groups Features Groups Blog posts Content Stream Documents Discussions Polls Q & A Events Notices My stuff Energy blogs 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142234617 Varnish cache server feedback Home Kyoung's picture Submitted by Kyoung(155) Contributor 13 December, 2012 - 10:01 Geothermal Stakeholder Feedback on the GRR feedback GRR As we head into the holiday season, we thought we'd share with you some of the feedback we've received from industry, agency, consultant and other stakeholder personnel. Thanks again to all, and Happy Holidays! General Syndicate content

73

Feedback control of spin systems  

E-Print Network (OSTI)

The feedback stabilization problem for ensembles of coupled spin 1/2 systems is discussed from a control theoretic perspective. The noninvasive nature of the bulk measurement allows for a fully unitary and deterministic closed loop. The Lyapunov-based feedback design presented does not require spins that are selectively addressable. With this method, it is possible to obtain control inputs also for difficult tasks, like suppressing undesired couplings in identical spin systems.

Claudio Altafini

2006-01-03T23:59:59.000Z

74

The design of eco-feedback technology  

Science Conference Proceedings (OSTI)

Eco-feedback technology provides feedback on individual or group behaviors with a goal of reducing environmental impact. The history of eco-feedback extends back more than 40 years to the origins of environmental psychology. Despite its stated purpose, ... Keywords: eco-feedback, environmental hci, reflective hci, survey

Jon Froehlich; Leah Findlater; James Landay

2010-04-01T23:59:59.000Z

75

ECOdriving - Widespread Implementation for Learner Drivers and Licensed  

Open Energy Info (EERE)

ECOdriving - Widespread Implementation for Learner Drivers and Licensed ECOdriving - Widespread Implementation for Learner Drivers and Licensed Drivers (ECOWILL) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: ECOdriving - Widespread Implementation for Learner Drivers and Licensed Drivers (ECOWILL) Agency/Company /Organization: Austrian Energy Agency Focus Area: Fuels & Efficiency Topics: Best Practices Website: www.ecodrive.org/ The ECOWILL project aims to reduce carbon emissions by up to 8 Mt until 2015 by boosting the application of eco-driving across Europe. The project will roll out training programs for licensed drivers in 13 European countries. ECOWILL also promotes the education of eco-driving for learner drivers. This website provides information about eco-driving, including country-specific activities.

76

NETL: IEP - Air Quality Research: Regulatory Drivers  

NLE Websites -- All DOE Office Websites (Extended Search)

Regulatory Drivers Regulatory Drivers DOE/NETL’s Air Quality Research Program is in direct response to the need to ensure that fossil-fuel-fired power systems continue to meet current and future environmental requirements. Specific environmental regulatory requirements driving this research are briefly summarized below: I. Clean Air Act (Including 1990 Amendments) Title I - Air Pollution Prevention and Control Part A - Air Quality and Emission Limitations Sect. 109 - National Ambient Air Quality Standards In July 1997 EPA promulgated new standards for particulate matter finer than 2.5 micrometers (PM2.5) and revised the ambient ozone standards. Sect. 111 - Standards of Performance for New Stationary Sources Part C - Prevention of Significant Deterioration of Air Quality

77

Projecting Fatalities in Crashes involving Older Drivers  

NLE Websites -- All DOE Office Websites (Extended Search)

Crashes Crashes Projecting Fatalities in Crashes Involving Older Drivers Involving Older Drivers Oak Oak Ridge Ridge National Laboratory National Laboratory, USA USA Presented at Presented at the the 17th 17th World Congress of the International World Congress of the International Association Association for Accident and Traffic Medicine for Accident and Traffic Medicine May May 30, 30, 2000, 2000, Stockholm, Sweden Stockholm, Sweden ORNL ORNL P. P. Hu Hu D. D. Jones Jones T. T. Reuscher Reuscher R. R. Schmoyer Schmoyer T. T. Truett Truett General General Motors Motors Annette Annette Irwin Irwin U.S. U.S. DOTransportation DOTransportation Jesse Jesse Blatt Blatt Acknowledgements Acknowledgements Objective Objective This This research research is is funded funded by by a a Cooperative Cooperative Research

78

General aspects of driver-car interaction  

Science Conference Proceedings (OSTI)

General aspects of Human Machine Interface (HMI) are very hard to be defined. They are the on the top level of interest when studying the reliability of the human operators. The first part of our article deals with general problems of HMI and its application ... Keywords: EEG, HMI, car simulation, civil aviation authority(CAA), controlled flight into terrain (CFIT), driver-car interaction, human factors, human performance and limitations (HPL)

Mirek Svítek; Petr Bouchner; Jind?ich Krása; Jin?ich Sadil; Zuzana B?linová; Jakub Rajnoch; Václav Vodrážka

2005-03-01T23:59:59.000Z

79

Alternative Fuel Driver Training Companion Manual  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Regulated Fleets Regulated Fleets Alternative Fuel Driver Training Companion Manual Notice This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product,

80

Minimizing driver's irritation at a roadblock  

E-Print Network (OSTI)

Urban traffic is a logistic issue which can have many societal implications, especially when, due to a too high density of cars, the network of streets of a city becomes blocked, and consequently, pedestrians, bicycles, and cars start sharing the same traffic conditions potentially leading to high irritations (of people) and therefore to chaos. In this paper we focus our attention on a simple scenario: We model the driver's irritation induced by the presence of a roadblock. As a natural generalization, we extend the model for the two one-way crossroads traffic presented by M.E. Fouladvand and M. Nematollahi to that of a roadblock. Our discrete model defines and minimizes the total waiting time. The novelty lies in introducing the (total) driver's irritation and its minimization. Finally, we apply our model to a real-world situation: rush hour traffic in Hillegom, The Netherlands. We observe that minimizing the total waiting time and minimizing the total driver's irritation lead to different traffic light stra...

Vleugels, C J J; Anthonissen, M J H; Seidman, T I

2013-01-01T23:59:59.000Z

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


81

\Reuschertrolder driver projectwriteupDeb finalchap08.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

8 - 1 8 - 1 8. FATAL CRASH RATES 8.1 MODELING FATALITY RATES FOR OLDER DRIVERS Data limitations impeded direct, reliable observation of all accidents, but accidents in which a fatality occurs are reported considerably more thoroughly and consistently than crashes not involving a fatality. Accordingly, our principal measure of fatalities is older driver fatalities, meaning the exact number of older drivers killed in accidents. We also developed another fatality measure which captured the total number of deaths involved in crashes involving an older driver, but its interpretability lacks clarity because of insufficient information on assignment of fault in crashes. The first of the two fatal crash rate concepts we call "driver risk," or the driver fatality

82

Multimodal feedback for tabletop interactions  

Science Conference Proceedings (OSTI)

This paper presents a study into the use of different modalities in providing per contact feedback for interactions on tabletop computers. We replicate the study by Wigdor et al. [3] and confirm their results, and extend the study to examine not ... Keywords: audio, mobile phone, multimodal, tabletop interaction, tactile

Christopher McAdam; Stephen Brewster

2011-11-01T23:59:59.000Z

83

Zero-rate feedback can achieve the empirical capacity  

E-Print Network (OSTI)

Achieving the empirical capacity using feedback: MemorylessGaussian feedback capacity,” IEEE Trans. Inf. Theory, vol.14] Y. -H. Kim, “Feedback capacity of stationary Gaussian

Eswaran, Krishnan; Sarwate, A D; Sahai, Anant; Gastpar, M

2010-01-01T23:59:59.000Z

84

Sound-Induced Flash Illusion is Resistant to Feedback Training  

E-Print Network (OSTI)

is Resistant to Feedback Training Orna Rosenthal Æ Shinsukewas resistant to feedback training, except when the amountMoreover, the feedback training effect seemed to disappear

Rosenthal, Orna; Shimojo, Shinsuke; Shams, Ladan

2009-01-01T23:59:59.000Z

85

Feasibility of a driver performance data acquisition system  

Science Conference Proceedings (OSTI)

The National Highway Traffic Safety Administration (NHTSA) envisions many future situations in which the effectiveness and consequences of new intelligent vehicle-highway systems technologies will need to be studied in actual production vehicles. Such studies will enable evaluations in vehicles which are familiar to drivers. These studies would be future enhanced by the availability of an instrumentation package that can be easily installed in these vehicles to enable specific vehicle configurations of interest to be evaluated, thereby increasing the variety of vehicle options that are available for study. Ideally, an approach is needed that would allow data collection from a variety of vehicle models and types, and would address the issue of driver familiarity. Such an approach is embodied in the concept of a driver performance data acquisition system that could be installed in a wide range of vehicles within a relatively short period of time. As a universally adaptable system, it would provide researchers with the ability to manually input data as well as directly record information on driver, vehicle, roadway, and environmental parameters. Furthermore, it would enable the measurement of driver performance in the driver`s own vehicle, thereby ensuring vehicle familiarity. In addition, it would be possible to measure driver performance in relation to any vehicle design characteristic at relatively little expense and effort, and would make it easy to update existing models of driver/vehicle behavior to reflect performance characteristics in vehicles of current manufacture.

Carter, R.J.; Spelt, P.F. [Oak Ridge National Lab., TN (United States); Goodman, M.J. [National Highway Traffic Safety Administration, Washington, DC (United States). Office of Crash Avoidance Research

1994-06-01T23:59:59.000Z

86

Natural Gas Markets: Recent Changes and Key Drivers  

U.S. Energy Information Administration (EIA)

U.S. Energy Information Administration Independent Statistics & Analysis www.eia.gov Natural Gas Markets: Recent Changes and Key Drivers for

87

\\Reuschertrolder driver projectwriteupDeb finalchap01.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

Contributing to Premature Reduction or Cessation of Driving by Older Men and Women G.8 Investigations of Crashes and Casualties Associated with Older Drivers G.9 Remediation...

88

Fundamental Drivers of the Cost and Price of Operating Reserves  

NLE Websites -- All DOE Office Websites (Extended Search)

Fundamental Drivers of the Cost and Price of Operating Reserves Marissa Hummon, Paul Denholm, Jennie Jorgenson, and David Palchak National Renewable Energy Laboratory Brendan Kirby...

89

\\Reuschertrolder driver projectwriteupDeb finalexecSumm.PD  

NLE Websites -- All DOE Office Websites (Extended Search)

could be included in the model. * Develop three empirical models (percentage of drivers, miles driven, and crash rate) based on historical data. * Formulate assumptions on the...

90

Driver Circuit for White LED Lamps with TRIAC Dimming Control.  

E-Print Network (OSTI)

??An efficient Light Emitting Diode (LED) lamp driver circuit is proposed for retrofitting the conventionally used incandescent lamps with existing TRIAC dimmer. The dimming feature… (more)

Weng, Szu-Jung

2012-01-01T23:59:59.000Z

91

Drivers and Barriers in the Current Concentrated Solar Power...  

Open Energy Info (EERE)

Current Concentrated Solar Power (CSP) Market (Webinar) Focus Area: Solar Topics: Market Analysis Website: www.leonardo-energy.orgwebinar-drivers-and-barriers-current-csp-marke...

92

Improving feedback from multiple choice tests  

Science Conference Proceedings (OSTI)

Providing individual feedback to large groups of students can be difficult. By asking students to record their confidence in multiple choice test answers the quality of feedback can be improved. In a "multiple choice question" (MCQ) test the student ...

William Fone

2002-06-01T23:59:59.000Z

93

NETL: IEP - Mercury Emissions Control: Regulatory Drivers  

NLE Websites -- All DOE Office Websites (Extended Search)

Regulatory Drivers Regulatory Drivers The Clean Air Act Amendments of 1990 (CAAA) brought about new awareness regarding the overall health-effects of stationary source fossil combustion emissions. Title III of the CAAA identified 189 pollutants, including mercury, as hazardous or toxic and required the Environmental Protection Agency (EPA) to evaluate their emissions by source, health effects and environmental implications, including the need to control these emissions. These pollutants are collectively referred to as air toxics or hazardous air pollutants (HAPs). The provisions in Title III specific to electric generating units (EGU) were comprehensively addressed by DOE's National Energy Technology Laboratory (NETL) and the Electric Power Research Institute (EPRI) in collaborative air toxic characterization programs conducted between 1990 and 1997. This work provided most of the data supporting the conclusions found in EPA's congressionally mandated reports regarding air toxic emissions from coal-fired utility boilers; the Mercury Study Report to Congress (1997)1 and the "Study of Hazardous Air Pollutant Emissions from Electric Utility Steam Generating Units -- Final Report to Congress" (1998).2 The first report identified coal-fired power plants as the largest source of human-generated mercury emissions in the U.S. and the second concluded that mercury from coal-fired utilities was the HAP of "greatest potential concern" to the environment and human health that merited additional research and monitoring.

94

IEP - Water-Energy Interface: Regulatory Drivers  

NLE Websites -- All DOE Office Websites (Extended Search)

Regulatory Drivers Regulatory Drivers Several legislative acts are in place that could potentially impact water quality requirements and water use for fossil energy production as well as electricity generation. These acts regulate pollutant discharge and water intake directly and indirectly. Under regulations established by the United States Environmental Protection Agency (EPA), these Acts serve to maintain and improve the Nation's water resources for uses including but not limited to agricultural, industrial, nutritional, and recreational purposes. The Clean Water Act - The Federal Water Pollution Control Act, more commonly known as the Clean Water Act, provides for the regulation of discharges to the nation's surface waters. To address pollution, the act specifies that the discharge of any pollutant by any person is unlawful except when in compliance with applicable permitting requirements. Initial emphasis was placed on "point source" pollutant discharge, but 1987 amendments authorized measures to address "non-point source" discharges, including stormwater runoff from industrial facilities. Permits are issued under the National Pollutant Discharge Elimination System (NPDES), which designates the highest level of water pollution or lowest acceptable standards for water discharges. NPDES permits are typically administered by the individual states. With EPA approval, the states may implement standards more stringent than federal water quality standards, but may not be less stringent. Certain sections of the Act are particularly applicable to water issues related to power generation. These include:

95

Inertially confined fusion using heavy ion drivers  

Science Conference Proceedings (OSTI)

The various technical issues of HIF will be briefly reviewed in this paper. It will be seen that there are numerous areas in common in all the approaches to HIF. In the recent International Symposium on Heavy Ion Inertial Fusion, the attendees met in specialized workshop sessions to consider the needs for research in each area. Each of the workshop groups considered the key questions of this report: (1) Is this an appropriate time for international collaboration in HIF (2) Which problems are most appropriate for such collaboration (3) Can the sharing of target design information be set aside until other driver and systems issues are better resolved, by which time it might be supposed that there could be a relaxation of classification of target issues (4) What form(s) of collaboration are most appropriate, e.g., bilateral or multilateral (5) Can international collaboration be sensibly attempted without significant increases in funding for HIF The authors of this report share the conviction that collaboration on a broad scale is mandatory for HIF to have the resources, both financial and personnel, to progress to a demonstration experiment. Ultimately it may be possible for a single driver with the energy, power, focusibility, and pulse shape to satisfy the needs of the international community for target physics research. Such a facility could service multiple experimental chambers with a variety of beam geometries and target concepts.

Herrmannsfeldt, W.B. (Stanford Linear Accelerator Center, Menlo Park, CA (United States)); Bangerter, R.O. (Lawrence Berkeley Lab., CA (United States)); Bock, R. (Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany)); Hogan, W.J.; Lindl, J.D. (Lawrence Livermore National Lab., CA (United States))

1991-10-01T23:59:59.000Z

96

Inertially confined fusion using heavy ion drivers  

Science Conference Proceedings (OSTI)

The various technical issues of HIF will be briefly reviewed in this paper. It will be seen that there are numerous areas in common in all the approaches to HIF. In the recent International Symposium on Heavy Ion Inertial Fusion, the attendees met in specialized workshop sessions to consider the needs for research in each area. Each of the workshop groups considered the key questions of this report: (1) Is this an appropriate time for international collaboration in HIF? (2) Which problems are most appropriate for such collaboration? (3) Can the sharing of target design information be set aside until other driver and systems issues are better resolved, by which time it might be supposed that there could be a relaxation of classification of target issues? (4) What form(s) of collaboration are most appropriate, e.g., bilateral or multilateral? (5) Can international collaboration be sensibly attempted without significant increases in funding for HIF? The authors of this report share the conviction that collaboration on a broad scale is mandatory for HIF to have the resources, both financial and personnel, to progress to a demonstration experiment. Ultimately it may be possible for a single driver with the energy, power, focusibility, and pulse shape to satisfy the needs of the international community for target physics research. Such a facility could service multiple experimental chambers with a variety of beam geometries and target concepts.

Herrmannsfeldt, W.B. [Stanford Linear Accelerator Center, Menlo Park, CA (United States); Bangerter, R.O. [Lawrence Berkeley Lab., CA (United States); Bock, R. [Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany); Hogan, W.J.; Lindl, J.D. [Lawrence Livermore National Lab., CA (United States)

1991-10-01T23:59:59.000Z

97

Motivational aspects in energy feedback systems design  

Science Conference Proceedings (OSTI)

In harmony with the 3rd HCI wave, the design of residential energy feedback systems (REFS) is an emerging research area in HCI, stimulated by the changes the world has suffered for economic and environmental reasons. Theoretical background ... Keywords: eco-feedback technology, motivation, residential energy feedback systems

Lara Schibelsky Godoy Piccolo; Maria Cecília Calani Baranauskas

2011-10-01T23:59:59.000Z

98

Quantum Feedback Networks John Gough,Wales  

E-Print Network (OSTI)

Quantum Feedback Networks John Gough,Wales Matt James,ANU #12;· Quantum Feedback · Quantum Networks - I · Classical Electrical Networks · Quantum Networks - II · Examples in Quantum Control Outline #12;· J. Gough and M.R. James, The Series Product and Its Application to Quantum Feedforward and Feedback

James, Matthew

99

Rf Feedback free electron laser  

DOE Patents (OSTI)

A free electron laser system and electron beam system for a free electron laser which use rf feedback to enhance efficiency. Rf energy is extracted from an electron beam by decelerating cavities and returned to accelerating cavities using rf returns such as rf waveguides, rf feedthroughs, etc. This rf energy is added to rf klystron energy to lower the required input energy and thereby enhance energy efficiency of the system.

Brau, Charles A. (Los Alamos, NM); Swenson, Donald A. (Los Alamos, NM); Boyd, Jr., Thomas J. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

100

Rf feedback free electron laser  

DOE Patents (OSTI)

A free electron laser system and electron beam system for a free electron laser are provided which use rf feedback to enhance efficiency. Rf energy is extracted from an electron beam by decelerating cavities and returned to accelerating cavities using rf returns such as rf waveguides, rf feedthroughs, etc. This rf energy is added to rf klystron energy to lower the required input energy and thereby enhance energy efficiency of the system.

Brau, C.A.; Swenson, D.A.; Boyd, T.J. Jr.

1979-11-02T23:59:59.000Z

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


101

Drivers of Variability in the South Asian Monsoon  

E-Print Network (OSTI)

Drivers of Variability in the South Asian Monsoon Announcement of Opportunity Outline Bids Deadline) jointly invite outline bid proposals for research on drivers of variability in the South Asian Monsoon. For ESSO-MoES, this activity forms part of their Monsoon Mission programme (http

Edinburgh, University of

102

Intercept: Profiling Windows Network Device Drivers* Manuel Mendona Nuno Neves  

E-Print Network (OSTI)

testing, or reverse engineering. Experi- ments using Ethernet, Wi-Fi and Bluetooth device drivers showIntercept: Profiling Windows Network Device Drivers* Manuel Mendonça Nuno Neves University of Lisboa, Faculty of Sciences, LASIGE, Portugal manuelmendonca@msn.com, nuno@di.fc.ul.pt Abstract. Device

Neves, Nuno

103

Channel estimation and feedback for multiple antenna communication  

E-Print Network (OSTI)

Finite Rate Feedback”, in Proc. MILCOM, Atlantic City, NJ,nite rate feedback,” in Proc. MILCOM, (Atlantic City, NJ),

Murthy, Chandra Ramabhadra

2006-01-01T23:59:59.000Z

104

Renewable Energy Technology Costs and Drivers | Open Energy Information  

Open Energy Info (EERE)

Renewable Energy Technology Costs and Drivers Renewable Energy Technology Costs and Drivers Jump to: navigation, search Tool Summary Name: Renewable Energy Technology Costs and Drivers Agency/Company /Organization: National Renewable Energy Laboratory Sector: Energy Focus Area: Renewable Energy Topics: Finance, Market analysis, Technology characterizations Resource Type: Publications Website: prod-http-80-800498448.us-east-1.elb.amazonaws.com//w/images/6/63/RE_C Renewable Energy Technology Costs and Drivers Screenshot References: Renewable Energy Technology Costs and Drivers[1] Summary "Provided herein is a preliminary, high-level summary of future and projected cost estimates for 1) Biofuels, 2) Solar (PV & CSP), and 3) Vehicle Batteries. Cost estimates are dependent on various assumptions and

105

A programmable CCD driver circuit for multiphase CCD operation  

Science Conference Proceedings (OSTI)

A programmable CCD driver circuit was designed to drive CCD's in multiphased modes. The purpose of the drive electronics was to operate developmental CCD imaging arrays for NASA's Moderate Resolution Imaging Spectrometer - Tiltable (MODIS-T). Five prototype arrays were designed. Valid's Graphics Editor (GED) was used to design the driver. With this driver design, any of the five arrays can be readout. Designing the driver with GED allowed functional simulation, timing verification, and certain packaging analyses to be done on the design before fabrication. The driver verified its function with the master clock running up to 10 MHz. This suggests a maximum rate of 400 Kpixels/sec. Timing and packaging parameters were verified. the design uses 54 TTL component chips.

Ewin, A.J.; Reed, K.V.

1989-02-01T23:59:59.000Z

106

Nonlinear transmission line based electron beam driver  

Science Conference Proceedings (OSTI)

Gated field emission cathodes can provide short electron pulses without the requirement of laser systems or cathode heating required by photoemission or thermionic cathodes. The large electric field requirement for field emission to take place can be achieved by using a high aspect ratio cathode with a large field enhancement factor which reduces the voltage requirement for emission. In this paper, a cathode gate driver based on the output pulse train from a nonlinear transmission line is experimentally demonstrated. The application of the pulse train to a tufted carbon fiber field emission cathode generates short electron pulses. The pulses are approximately 2 ns in duration with emission currents of several mA, and the train contains up to 6 pulses at a frequency of 100 MHz. Particle-in-cell simulation is used to predict the characteristic of the current pulse train generated from a single carbon fiber field emission cathode using the same technique.

French, David M.; Hoff, Brad W.; Tang Wilkin; Heidger, Susan; Shiffler, Don [Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, New Mexico 87117 (United States); Allen-Flowers, Jordan [Program in Applied Mathematics, University of Arizona, Tucson, Arizona 85721 (United States)

2012-12-15T23:59:59.000Z

107

Offshore Wind Plant Balance-of-Station Cost Drivers and Sensitivities...  

NLE Websites -- All DOE Office Websites (Extended Search)

Sensitivities OFFSHORE WIND PLANT BALANCE-OF-STATION COST DRIVERS AND SENSITIVITIES OFFSHORE WIND PLANT BALANCE-OF-STATION COST DRIVERS AND SENSITIVITIES G. Saur, B. Maples, B....

108

Energy for 500 Million Homes: Drivers and Outlook for Residential Energy Consumption in China  

E-Print Network (OSTI)

million Homes: Drivers and Outlook for Residential Energymillion Homes: Drivers and Outlook for Residential Energyconsumption, future outlook, end-use, bottom-up analysis

Zhou, Nan

2010-01-01T23:59:59.000Z

109

Feedback Trading and Intermittent Market Turbulence  

E-Print Network (OSTI)

-frequency, non-fundamental feedback trading model. Price adjustment is driven by the time-varying price impact of net order- flow. In tranquil times feedback trading has no impact on the price level. Given feedback trading intensities, as asset liquidity declines... , Cambridge-Princeton Finance Seminar 2006, and Cantab Capital Partners, and to Andrew Filardo, Bill Janeway, Ewan Kirk, Steven Satchell, Jose Scheinkman, Nikola Tarashev, Christian Upper, and three anonymous referees for their valuable comments. The usual...

Tambakis, Demosthenes N

110

Diagnostic Measurement and Performance Feedback for Residential...  

NLE Websites -- All DOE Office Websites (Extended Search)

Performance Feedback for Residential Space Conditioning Equipment Building America Expert Meeting 26-April-2010 Held at NIST, Gaithersburg, MD Diagnostic Measurement and...

111

Feedback Cooling of a Single Neutral Atom  

E-Print Network (OSTI)

We demonstrate feedback cooling of the motion of a single rubidium atom trapped in a high-finesse optical resonator to a temperature of about 160 \\mu K. Time-dependent transmission and intensity-correlation measurements prove the reduction of the atomic position uncertainty. The feedback increases the 1/e storage time into the one second regime, 30 times longer than without feedback. Feedback cooling therefore rivals state-of-the-art laser cooling, but with the advantages that it requires less optical access and exhibits less optical pumping.

Markus Koch; Christian Sames; Alexander Kubanek; Matthias Apel; Maximilian Balbach; Alexei Ourjoumtsev; Pepijn W. H. Pinkse; Gerhard Rempe

2010-07-12T23:59:59.000Z

112

Feedback Cooling of a Single Neutral Atom  

E-Print Network (OSTI)

We demonstrate feedback cooling of the motion of a single rubidium atom trapped in a high-finesse optical resonator to a temperature of about 160 \\mu K. Time-dependent transmission and intensity-correlation measurements prove the reduction of the atomic position uncertainty. The feedback increases the 1/e storage time into the one second regime, 30 times longer than without feedback. Feedback cooling therefore rivals state-of-the-art laser cooling, but with the advantages that it requires less optical access and exhibits less optical pumping.

Koch, Markus; Kubanek, Alexander; Apel, Matthias; Balbach, Maximilian; Ourjoumtsev, Alexei; Pinkse, Pepijn W H; Rempe, Gerhard

2010-01-01T23:59:59.000Z

113

WIPP Driver Makes History, Again | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

WIPP Driver Makes History, Again WIPP Driver Makes History, Again WIPP Driver Makes History, Again August 31, 2011 - 12:00pm Addthis Media Contact Deb Gill www.wipp.energy.gov 575-234-7270 CARLSBAD, N.M. - A brand-new shipping package arrived at the Department of Energy's Waste Isolation Pilot Plant (WIPP) during the early evening hours of August 25, but an all-too familiar face was behind the wheel of the vehicle carrying the package. Long-time WIPP driver Randy Anderson made history, again, when he guided the new TRUPACT-III on its maiden voyage from the Savannah River Site (SRS), located near Aiken, S.C., to the underground repository for defense-generated transuranic (TRU) waste near Carlsbad, N.M. "The trip was uneventful," said Anderson at the conclusion of the 1,534 mile trip from SRS to WIPP. "There were no mechanical problems and no

114

WIPP Driver Makes History, Again | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Driver Makes History, Again Driver Makes History, Again WIPP Driver Makes History, Again August 31, 2011 - 12:00pm Addthis Media Contact Deb Gill www.wipp.energy.gov 575-234-7270 CARLSBAD, N.M. - A brand-new shipping package arrived at the Department of Energy's Waste Isolation Pilot Plant (WIPP) during the early evening hours of August 25, but an all-too familiar face was behind the wheel of the vehicle carrying the package. Long-time WIPP driver Randy Anderson made history, again, when he guided the new TRUPACT-III on its maiden voyage from the Savannah River Site (SRS), located near Aiken, S.C., to the underground repository for defense-generated transuranic (TRU) waste near Carlsbad, N.M. "The trip was uneventful," said Anderson at the conclusion of the 1,534 mile trip from SRS to WIPP. "There were no mechanical problems and no

115

Unemployed Truck Driver Trains for New Career in Weatherization |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Truck Driver Trains for New Career in Weatherization Truck Driver Trains for New Career in Weatherization Unemployed Truck Driver Trains for New Career in Weatherization November 5, 2010 - 2:46pm Addthis Maya Payne Smart Former Writer for Energy Empowers, EERE What does this mean for me? Workers across the country are being retrained for careers in the new clean energy economy. Tyrone Bailey had been out of work for 14 months when an unemployment office staffer told him about a home-weatherization training program offered by the state of New Jersey. The former truck driver and construction worker jumped at the opportunity to acquire new skills and began training January 19. He graduated April 1 and won a position with GreenLight Solutions, a Montclair, New Jersey-based residential home improvement company just two weeks later.

116

Unemployed Truck Driver Trains for New Career in Weatherization |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Unemployed Truck Driver Trains for New Career in Weatherization Unemployed Truck Driver Trains for New Career in Weatherization Unemployed Truck Driver Trains for New Career in Weatherization November 5, 2010 - 2:46pm Addthis Maya Payne Smart Former Writer for Energy Empowers, EERE What does this mean for me? Workers across the country are being retrained for careers in the new clean energy economy. Tyrone Bailey had been out of work for 14 months when an unemployment office staffer told him about a home-weatherization training program offered by the state of New Jersey. The former truck driver and construction worker jumped at the opportunity to acquire new skills and began training January 19. He graduated April 1 and won a position with GreenLight Solutions, a Montclair, New Jersey-based residential home improvement company just two weeks later.

117

Perspectives on AFVs: State and City Government Fleet Driver Survey  

DOE Green Energy (OSTI)

This survey collected information from state government and city government fleet drivers who operate light-duty alternative fuel vehicles(AFVs). The survey posed questions about AFV use, fuel use and availability and performance.

Whalen, M.; Eudy, L.; Coburn, T.

1999-04-05T23:59:59.000Z

118

V-217: Microsoft Windows NAT Driver ICMP Packet Handling Denial...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SCUSSION: The vulnerability is caused due to an error within the Windows NAT Driver when handling ICMP packets and can be exploited to cause the system to stop responding IMPACT:...

119

Human Drivers of Climate Change: Energy, Economic Growth, and...  

NLE Websites -- All DOE Office Websites (Extended Search)

Human Drivers of Climate Change: Energy, Economic Growth, and Trade Speaker(s): Steve Davis Date: October 1, 2012 - 4:00pm Location: 90-3122 Seminar HostPoint of Contact: Ryan...

120

Solar heat pipe feedback turbogenerator  

SciTech Connect

The conversion of radiant heat to electricity by a heat pipe-turbogenerator combination is described. The heat pipe-tubogenerator assembly is suitably externally insulated, as by a vacuum shield, to prevent heat losses and heat is recovered from the condenser portion of the heat pipe and returned to the evaporator portions. An application of the generic invention is discussed which it is employed on wall or roof portions of a building and serves as at least a partial supporting structure for these. In another application the solar heat pipe feedback turbogenerator may be incorporated in or used with reflective means, such as reflective sheet material of large area positioned to direct solar radiation onto the evaporator section of the heat pipe. The reflective means may be changed in position to follow the sun to produce maximum power during operation.

Decker, B.J.

1978-10-24T23:59:59.000Z

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


121

UWB communication receiver feedback loop  

DOE Patents (OSTI)

A novel technique and structure that maximizes the extraction of information from reference pulses for UWB-TR receivers is introduced. The scheme efficiently processes an incoming signal to suppress different types of UWB as well as non-UWB interference prior to signal detection. Such a method and system adds a feedback loop mechanism to enhance the signal-to-noise ratio of reference pulses in a conventional TR receiver. Moreover, sampling the second order statistical function such as, for example, the autocorrelation function (ACF) of the received signal and matching it to the ACF samples of the original pulses for each transmitted bit provides a more robust UWB communications method and system in the presence of channel distortions.

Spiridon, Alex (Palo Alto, CA); Benzel, Dave (Livermore, CA); Dowla, Farid U. (Castro Valley, CA); Nekoogar, Faranak (San Ramon, CA); Rosenbury, Erwin T. (Castro Valley, CA)

2007-12-04T23:59:59.000Z

122

Multimedia Feedback Systems for Engineering  

SciTech Connect

The World Wide Web has become a key tool for information sharing. Engineers and scientists are finding that the web is especially suited to publishing the graphical, multi-layered information that is typical of their work. Web pages are easier to distribute than hardcopy. Web movies have become more accessible, in many offices, than videos. Good VRML viewing software, bundled with most new PCs, has sufficient power to support many engineering needs. In addition to publishing information science and engineering has an important tradition of peer and customer review. Reports, drawings and graphs are typically printed, distributed, reviewed, marked up, and returned to the author. Adding review comments to paper is easy. When, however, the information is in electronic form, this ease of review goes away. It's hard to write on videos. It's even harder to write comments on animated 3D models. These feedback limitations reduce the value of the information overall. Fortunately, the web can also be a useful tool for collecting peer and customer review information. When properly formed, web reports, movies, and 3D animations can be readily linked to review notes. This paper describes three multimedia feed-back systems that Sandia National Laboratories has developed to tap that potential. Each system allows people to make context-sensitive comments about specific web content and electronically ties the comments back to the web content being referenced. The fuel system ties comments to specific web pages, the second system ties the comments to specific frames of digital movies, and the third ties the comments to specific times and viewpoints within 3D animations. In addition to the technologies, this paper describes how they are being used to support intelligent machine systems design at Sandia.

Gladwell, S.; Gottlieb, E.J.; McDonald, M.J.; Slutter, C.L.

1998-12-15T23:59:59.000Z

123

Multimedia Feedback Systems for Engineering  

SciTech Connect

The World Wide Web has become a key tool for information sharing. Engineers and scientists are finding that the web is especially suited to publishing the graphical, multi-layered information that is typical of their work. Web pages are easier to distribute than hardcopy. Web movies have become more accessible, in many offices, than videos. Good VRML viewing software, bundled with most new PCs, has sufficient power to support many engineering needs. In addition to publishing information science and engineering has an important tradition of peer and customer review. Reports, drawings and graphs are typically printed, distributed, reviewed, marked up, and returned to the author. Adding review comments to paper is easy. When, however, the information is in electronic form, this ease of review goes away. It's hard to write on videos. It's even harder to write comments on animated 3D models. These feedback limitations reduce the value of the information overall. Fortunately, the web can also be a useful tool for collecting peer and customer review information. When properly formed, web reports, movies, and 3D animations can be readily linked to review notes. This paper describes three multimedia feed-back systems that Sandia National Laboratories has developed to tap that potential. Each system allows people to make context-sensitive comments about specific web content and electronically ties the comments back to the web content being referenced. The fuel system ties comments to specific web pages, the second system ties the comments to specific frames of digital movies, and the third ties the comments to specific times and viewpoints within 3D animations. In addition to the technologies, this paper describes how they are being used to support intelligent machine systems design at Sandia.

Gladwell, S.; Gottlieb, E.J.; McDonald, M.J.; Slutter, C.L.

1998-12-15T23:59:59.000Z

124

Modelling the dynamical baroreflex-feedback control  

Science Conference Proceedings (OSTI)

A comprehensive model of the baroreflex-feedback mechanism regulating the heart rate, the contractility of the ventricle and the peripheral vascular resistance is presented. The dynamics of the affector and the effector parts are modelled. For each of ... Keywords: Baroreceptor, Cardiovascular system, Mathematical modelling, Medical applications, Neural biology, Nonlinear feedback mechanism, Nonlinear oscillations

J. T. Ottesen

2000-02-01T23:59:59.000Z

125

Carbon Credit Capital and Feedback Ventures JV | Open Energy...  

Open Energy Info (EERE)

Feedback Ventures JV Jump to: navigation, search Name Carbon Credit Capital and Feedback Ventures JV Place India Sector Carbon Product String representation "Carbon Credit C ......

126

Federal Energy Management Program: Information and Feedback Institutio...  

NLE Websites -- All DOE Office Websites (Extended Search)

Feedback Institutional Change Principle to someone by E-mail Share Federal Energy Management Program: Information and Feedback Institutional Change Principle on Facebook Tweet...

127

Feedback Requirements for SASE-FELs  

SciTech Connect

The operation of a Self Amplified Spontaneous Emission (SASE) Free Electron Lasers (FEL) at soft and hard X-ray wavelengths driven by a high brightness electron beam imposes strong requirements on the stability of the accelerator and feedback systems are necessary to both guarantee saturation of the SASE process as well as a stable photon beam for user experiments. Diagnostics for the relevant transverse and longitudinal beam parameters are presented and various examples of feedback systems for bunches with low repetition rate as well as systems for intra bunch train feedbacks are discussed.

Loos, Henrik; /SLAC

2012-07-06T23:59:59.000Z

128

Green Button Gamer: Driver Challenge | Open Energy Information  

Open Energy Info (EERE)

Green Button Gamer: Driver Challenge Green Button Gamer: Driver Challenge Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Green Button Gamer Agency/Company /Organization: Green Button Gamer Sector: Energy Focus Area: Vehicles Resource Type: Software/modeling tools User Interface: Website, Mobile Device Website: greenbuttongamer.com/ Web Application Link: greenbuttongamer.com/ Cost: Free OpenEI Keyword(s): Featured, Challenge Generated Green Button Gamer Screenshot References: Green Button Gamer[1] Challenge.gov[2] Challenge.gov Submission Page[3] Logo: Green Button Gamer The merger of social apps and gamification of real time vehicle and energy data. Overview GBG Driver Challenge allows users to compete with celebrities, friends, themselves and strangers on games that reinforce good driving habits and

129

Van Allen probes pinpoint driver of speeding electrons  

NLE Websites -- All DOE Office Websites (Extended Search)

Van Allen probes pinpoint driver of speeding electrons Van Allen probes pinpoint driver of speeding electrons Van Allen probes pinpoint driver of speeding electrons Los Alamos researchers believe they have solved a lingering mystery about how electrons within Earth's radiation belt can suddenly become energetic enough to kill orbiting satellites. July 25, 2013 Artist's rendering of mechanism within Van Allen radiation belts An artist's rendering of a mechanism within the Van Allen radiation belts that can accelerate electrons to satellite-killing energies. The mechanism was discovered by a group of scientists using data from NASA's Van Allen Probes (formerly known as the Radiation Belt Storm Probes). Researchers, led by Los Alamos National laboratory space physicist Geoffrey Reeves, believe that electromagnetic waves within the Van Allen belts themselves

130

Rate Us - ORNL DAAC Feedback Forum  

NLE Websites -- All DOE Office Websites (Extended Search)

Help > Feedback Help > Feedback Rate Us - ORNL DAAC Feedback Forum To improve service to our customers, this forum provides a means to monitor user satisfaction. Please take a moment to tell us about your experience. Consider Data availability, accessibility, and value Web navigation and content Customer service Your responses will remain anonymous in keeping with our Privacy Policy. Select one of the following options that best describes your experience with the ORNL DAAC. Positive Mixed Negative If you wish to add comments or to explain your rating, please enter your comments in the box below. If you would like us to reply to your comments or concern, please enter your e-mail address here: Please solve the following simple math problem: 4 x 2 = help icon Submit Feedback Clear form

131

Decomposition of radiational effects of model feedbacks  

SciTech Connect

Three separate doubled CO/sub 2/ experiments with the statistical dynamic model are used to illustrate efforts to study the climate dynamics, feedbacks, and interrelationships of meteorological parameters by decomposing and isolating their individual effects on radiation transport.

Ellsaesser, H.W.; MacCracken, M.C.; Potter, G.L.; Mitchell, C.S.

1981-08-01T23:59:59.000Z

132

Final report, Feedback limitations of photosynthesis  

DOE Green Energy (OSTI)

Final report of research on carbon metabolism of photosynthesis. The feedback from carbon metabolism to primary photosynthetic processes is summarized, and a comprehensive list of published scientific papers is provided.

Sharkey, Thomas D.

1999-07-22T23:59:59.000Z

133

When does feedback facilitate learning of words?  

E-Print Network (OSTI)

ON LONG-TERM RECALL When Does Feedback Facilitate Learningperformance during learning, it does so at the expense ofduring training, it often does so at the expense of longer

Pashler, Harold; Cepeda, N J; Wixted, J T; Rohrer, D

2005-01-01T23:59:59.000Z

134

Feedback Capacity of the Compound Channel  

E-Print Network (OSTI)

In this work, we find the capacity of a compound finite-state channel (FSC) with time-invariant deterministic feedback. We consider the use of fixed length block codes over the compound channel. Our achievability result ...

Shrader, Brooke E.

135

BEAM SIMULATIONS USING VIRTUAL DIAGNOSTICS FOR THE DRIVER LINAC  

Science Conference Proceedings (OSTI)

End-to-end beam simulations for the driver linac have shown that the design meets the necessary performance requirements including having adequate transverse and longitudinal acceptances. However, to achieve reliable operational performance, the development of appropriate beam diagnostic systems and control room procedures are crucial. With limited R&D funding, beam simulations provide a cost effective tool to evaluate candidate beam diagnostic systems and to provide a critical basis for developing early commissioning and later operational activities. We propose to perform beam dynamic studies and engineering analyses to define the requisite diagnostic systems of the driver linac and through simulation to develop and test commissioning and operational procedures.

R. C. York; X. Wu; Q. Zhao

2011-12-21T23:59:59.000Z

136

Microsoft Word - ContractManagementPlanningDRIVERS.doc  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Drivers for Ineffective and Effective Drivers for Ineffective and Effective Contract Management and Planning Ineffective Contract Management and Planning Effective Contract Management and Planning 1. Top management does not demonstrate a commitment to contract management planning. 2. Contract team members not clear on contract requirements. 3. Contract team members left out of planning process. 4. Lack of coordination and communication amongst the team members. 5. Contract team members not sure of roles, responsibilities, and limitations. 6. Contract team members not clear on how their responsibilities relate, or interact with, other team members. 1. Top management actively demonstrates a commitment to the contract management planning process. 2. Top management mandates training for the

137

Some Notes on Wideband Feedback Amplifiers  

SciTech Connect

The extension of the passband of wideband amplifiers is a highly important problem to the designer of electronic circuits. Throughout the electronics industry and in many research programs in physics and allied fields where extensive use is made of video amplifiers, the foremost requirement is a passband of maximum width. This is necessary if it is desired to achieve a more faithful reproduction of transient wave forms, a btter time resolution in physical measurements, or perhaps just a wider band gain-frequency response to sine wave signals. The art of electronics is continually faced with this omnipresent amplifier problem. In particular, the instrumentation techniques of nuclear physics require amplifiers with short rise times, a high degree of gain stability, and a linear response to high signal levels. While the distributed amplifier{sup 1} may solve the problems of those seeking only a wide passband, the requirements of stability and linearity necessitate using feedback circuits. This paper considers feedback amplifiers from the standpoint of high-frequency performance. The circuit conditions for optimum steady-state (sinusoidal) and transient response are derived and practical circuits (both interstage and output) are presented which fulfill these conditions. In general, the results obtained may be applied to the low-frequency end. The fundamental limitation in feedback amplifiers arises from the over-all phase shift in the amplifier and in some cases, the feedback circuit as well. As the shift in phase approaches 180 degrees on either side of the mid-band, the feedback becomes positive, resulting in regeneration and possible oscillation. The relationships between attenuation and phase shift necessary for amplifier stability have been formulated and published{sup 2}. It is the phase shift and its attendant difficulties that make feeback over more than three stages impractical for video amplifiers; and while three-tube feedback{sup 3} is feasible on theoretical grounds, it is difficult to design practical circuits which use the feedback to the best advantage. Fig. 1 shows two of the most satisfactory three-tube feedback loops which have been used for video purposes. The circuit in Fig. 1a accomplishes the feeback through the common plate impedance of T{sub 1}. The one serious shortcoming of this circuit is that the gain of T{sub 1} is not stabilized. This tube merely serves to drive the feedback loop encompassing T{sub 2},T{sub 3}, and T{sub 4}. For this reason the circuit is inadequate when used in those applications where the virtues of feedback; e.g., stability, linearity, are required.

Fitch, V.

1949-03-16T23:59:59.000Z

138

Opportunistic Scheduling in Multiuser OFDM Systems with Clustered Feedback  

Science Conference Proceedings (OSTI)

This paper proposes a random access based feedback protocol for multiuser orthogonal frequency division multiple access (OFDMA) systems with clustered feedback, where users are assigned to clusters of subcarriers based on the feedback of channel state ... Keywords: Limited feedback, OFDMA, Scheduling

Taiwen Tang; Chan-Byoung Chae; Robert W. Heath, Jr.; Sunghyun Cho; Sangboh Yun

2010-01-01T23:59:59.000Z

139

feedback on the DARPA ICV "Methodology for Evaluation of ...  

Science Conference Proceedings (OSTI)

EWG/ICV Online Forum. feedback on the DARPA ICV " Methodology for Evaluation of Collaboration Systems". ...

140

Business Case Slide 2: Drivers for DU Use R&D  

NLE Websites -- All DOE Office Websites (Extended Search)

Drivers for DU Use R&D Previous Slide Next Slide Table of Contents Drivers for DU Use R&D Compliance agreement with Ohio EPA Still in force; requires R&D effort and annual report...

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


141

Comparative Oncogenomic Analysis of Copy Number Alterations in Human and Zebrafish Tumors Enables Cancer Driver Discovery  

E-Print Network (OSTI)

The identification of cancer drivers is a major goal of current cancer research. Finding driver genes within large chromosomal events is especially challenging because such alterations encompass many genes. Previously, we ...

Zhang, GuangJun

142

Design and implementation of A truecolor wide dimming single-pin LED driver  

E-Print Network (OSTI)

This thesis develops a single-pin LED driver used in wide screen displays. With the increasing size of the displays, a more compact multi-channel driver solution is needed for the increasing number of back light LEDs. This ...

Li, Zhen, M. Eng. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

143

APPLICATION NOTE 4393 Selecting HB LED Drivers for Automotive Lighting Applications  

E-Print Network (OSTI)

Abstract: This application note provides an overview of HB LED driver selection criteria for automotive lighting applications. It reviews HB LED driver topologies and recommends configurations for various automotive lighting applications, including interior lighting, exterior lighting, and display backlighting.

Brian Hedayati

2009-01-01T23:59:59.000Z

144

Detection and tracking of driver's hands in real time  

Science Conference Proceedings (OSTI)

In this paper a complete driver's hands detection and tracking system suitable for working in real time conditions has been developed. The proposed system has been successfully tested in close-real world conditions in different scenarios on a very realistic ... Keywords: automotive application, image processing, real time, tracking

Raúl Crespo; Isaac Martín De Diego; Cristina Conde; Enrique Cabello

2010-11-01T23:59:59.000Z

145

Virable speed gas-turbine drivers gain in compressor use  

SciTech Connect

Variable-speed drivers, such as gas turbines, for reciprocating compressors enhance overall energy savings and a compressor's operational flexibility. This paper presents the main design aspects of gas-turbine systems and some examples from a recent installation in Germany.

Giacomelli, E.; Bernardini, F. (Nuovo Pignone, Florence (Italy)); Andree, H. (Pipeline Engineering GmbH, Essen (DE))

1990-11-19T23:59:59.000Z

146

Fuel Economy Driver Interfaces: Usability Study of Display Component Concepts  

E-Print Network (OSTI)

A fuel economy driver interface (FEDI) gives drivers an indication of fuel usage or efficiency. Many passenger vehicles in recent model years have FEDIs, and they have been included in some vehicle models for decades. FEDIs present fuel economy information in a variety of forms. Some show fuel economy in miles per gallon (mpg) while others provide a relative measure of economy or provide an alert if fuel economy is especially poor. The appearances of FEDIs vary drastically between vehicle makes and models. FEDIs can provide numerical output, analog or digital gauges, bar charts, illuminator lamps, and a variety of other display features. With the recent emergence of high-resolution LCD screens in cars, detailed and complex color displays are possible, and these make feasible a variety of new FEDI concepts. FEDIs may even include vehicle-adaptive features that influence some aspect of vehicle performance in response to inefficient driver behaviors. While FEDIs have the potential to encourage efficient and safe driving, it is possible that the displays themselves cause distraction at the expense of attending to the roadway. Overall goals of this research program are to understand how characteristics of FEDIs influence driver behavior, and to identify best practices for FEDI design to meet drivers ’ needs and minimize distraction and undesirable behavior. Previous work on this project has included documenting the range of existing FEDI designs and conducting focus groups with vehicle owners to discuss fuel efficient driving behaviors and FEDI designs (Jenness, Singer, Walrath, & Lubar, 2009). The purpose of the usability study presented here was to narrow down the range of possible FEDI designs so that the most usable concepts could be tested in a subsequent driving simulator study.

Cs Intensity-changing Light

2010-01-01T23:59:59.000Z

147

A Fast Feedback System for CEBAF  

E-Print Network (OSTI)

A fast feedback system based on concepts of modern control theory has been implemented in the CEBAF Control System to stabilize various machine parameters. The continuous wave operation of CEBAF requires that parameters such as beam energy and position are stabilized against fast fluctuations. The beam energy must be stabilized against fast gradient and phase fluctuations in the RF accelerating system. This fast feedback system currently operates at 60 Hz rate and is integrated with EPICS. The mathematical model of the system for various feedback loops is expressed in state space formalism. The design of control law and simulation of closed-loop system response is performed using Matlab ™ and Simulink ™. This paper describes the process of designing control algorithms, implementation of the fast feedback system and operational experience with this system at CEBAF. The performance of this feedback system, while operating at much higher rates with high closed loop gain, can be enhanced by continually performing on-line identification of the system from the input and output data. System identification is the process of developing or improving an analytically derived mathematical representation of a physical system using experimental data. The current status of this feature is presented. I.

M. P. Chowdhary; G. A. Krafft; H. Shoaee; W. A. Watson

1995-01-01T23:59:59.000Z

148

Ris Energy Report 5 Global drivers for transformation of energy systems 3 Global drivers for transformation of energy  

E-Print Network (OSTI)

by simulta- neous dramatic increases in oil and gas prices. The role of energy supply as a key facilitator decade. Developing countries are devoting more attention to securing their future energy supplies drivers for future en- ergy development activities: · security of supply; · climate change; · energy

149

Electricity Use Feedback Pilot and Research Activity  

Science Conference Proceedings (OSTI)

This report provides a summary of ongoing and planned research related to the impact of feedback on household electricity use. It does so through a detailed comparative description of the design of ongoing and planned utility research projects. As the most up-to-date and complete synthesis of utility-funded feedback research available, it provides utilities with a means for understanding both the outstanding research issues and what is being done (and by whom) to resolve them. It will help utilities dete...

2009-12-21T23:59:59.000Z

150

Driver Behavior at Rail Crossings: Cost-Effective Improvements to Increase Driver Safety at Public At-Grade Rail-Highway Crossings in California  

E-Print Network (OSTI)

14 5.1. Potential Rail Crossing19 DRIVER DECISIONS AT RAIL CROSSINGS: A CONCEPTUALFigure 1: Ten Year U.S. and California Rail-Highway Crossing

Cooper, Douglas L.; Ragland, David R.

2007-01-01T23:59:59.000Z

151

\Reuschertrolder driver projectwriteupDeb finalchap09.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

9 - 1 9 - 1 9. ANALYSIS OF THE FATALITY PROJECTIONS In this chapter, we offer two views on the importance of various determinants of elderly driver fatalities. The first takes the perspective of the four major components of the projections: growths in population, increases in VMT, growth in the percent of the elderly population driving, and decreases in crash risk. We report these contributions to the fatality projections in Section 9.1. None of these major components is directly amenable to policy instruments, but many of the variables in the equations used to project those components do have some susceptibility to adjustment by public policy. In Section 9.2 we report the sensitivity of driver fatalities in 2025 to alternative scenarios based on alternative growth

152

Baseline scenario(s) for muon collider proton driver  

DOE Green Energy (OSTI)

This paper gives an overview of the various muon collider scenarios and the requirements they put on the Proton Driver. The required proton power is about 4-6MW in all the scenarios, but the bunch repetition rate varies between 12 and 65Hz. Since none of the muon collider scenarios have been simulated end-to-end, it would be advisable to plan for an upgrade path to around 10MW. Although the proton driver energy is flexible, cost arguments seems to favor a relatively low energy. In particular, at Fermilab 8GeV seems most attractive, partly due to the possibility of reusing the three existing fixed energy storage rings for bunch manipulations.

Jansson, Andreas; /Fermilab

2008-07-01T23:59:59.000Z

153

Closed orbit feedback with digital signal processing  

SciTech Connect

The closed orbit feedback experiment conducted on the SPEAR using the singular value decomposition (SVD) technique and digital signal processing (DSP) is presented. The beam response matrix, defined as beam motion at beam position monitor (BPM) locations per unit kick by corrector magnets, was measured and then analyzed using SVD. Ten BPMs, sixteen correctors, and the eight largest SVD eigenvalues were used for closed orbit correction. The maximum sampling frequency for the closed loop feedback was measured at 37 Hz. Using the proportional and integral (PI) control algorithm with the gains Kp = 3 and K{sub I} = 0.05 and the open-loop bandwidth corresponding to 1% of the sampling frequency, a correction bandwidth ({minus}3 dB) of approximately 0.8 Hz was achieved. Time domain measurements showed that the response time of the closed loop feedback system for 1/e decay was approximately 0.25 second. This result implies {approximately} 100 Hz correction bandwidth for the planned beam position feedback system for the Advanced Photon Source storage ring with the projected 4-kHz sampling frequency.

Chung, Y.; Kirchman, J.; Lenkszus, F. [and others

1994-08-01T23:59:59.000Z

154

Be a Safe and Efficient Winter Driver | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Be a Safe and Efficient Winter Driver Be a Safe and Efficient Winter Driver Be a Safe and Efficient Winter Driver January 13, 2009 - 8:29am Addthis Drew Bittner Web Manager, Office of Energy Efficiency and Renewable Energy As I write this post, the Midwest and northern states are in the grip of a deep freeze. Temperatures are extremely low, and when wind chill is added in, it's barely possible to set foot outside. But if you are like me, you still need to get to work. For most of the country, that means driving-at least a little, if not an hour-plus commute each way. So why not make your vehicle efficient? We've been advising you on ways to make the home more energy smart, so let's talk about your car for a moment. One of the best ways to be energy smart with your car is also one of the wisest: drive sensibly. Aggressive driving wastes gas. Jackrabbit starts,

155

Be a Safe and Efficient Winter Driver | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Be a Safe and Efficient Winter Driver Be a Safe and Efficient Winter Driver Be a Safe and Efficient Winter Driver January 13, 2009 - 8:29am Addthis Drew Bittner Web Manager, Office of Energy Efficiency and Renewable Energy As I write this post, the Midwest and northern states are in the grip of a deep freeze. Temperatures are extremely low, and when wind chill is added in, it's barely possible to set foot outside. But if you are like me, you still need to get to work. For most of the country, that means driving-at least a little, if not an hour-plus commute each way. So why not make your vehicle efficient? We've been advising you on ways to make the home more energy smart, so let's talk about your car for a moment. One of the best ways to be energy smart with your car is also one of the wisest: drive sensibly. Aggressive driving wastes gas. Jackrabbit starts,

156

Fuel Economy Driver Interfaces: Driving Simulator Study of Component Concepts  

E-Print Network (OSTI)

A fuel economy driver interface (FEDI) gives a driver an indication of fuel usage or efficiency. Many passenger vehicles in recent model years have FEDIs and they have been included in some vehicle models for decades. FEDIs present fuel economy information in a variety of forms. Some show fuel economy in miles per gallon (mpg) while others provide a relative measure of economy or provide an alert if fuel economy is especially poor. The appearances of FEDIs vary drastically between vehicle makes and models. FEDIs can provide numerical output, analog or digital gauges, bar charts, illuminator lamps, and a variety of other display features. With the recent emergence of high-resolution LCD screens in cars, detailed and complex color displays are possible, and these make feasible a variety of new FEDI concepts. FEDIs may even include vehicle-adaptive features that influence some aspect of vehicle performance in response to inefficient driver behaviors. While FEDIs have the potential to encourage efficient and safe driving, it is possible that the displays themselves might cause distraction at the expense

unknown authors

2010-01-01T23:59:59.000Z

157

CW high intensity non-scaling FFAG proton drivers  

SciTech Connect

Accelerators are playing increasingly important roles in basic science, technology, and medicine including nuclear power, industrial irradiation, material science, and neutrino production. Proton and light-ion accelerators in particular have many research, energy and medical applications, providing one of the most effective treatments for many types of cancer. Ultra high-intensity and high-energy (GeV) proton drivers are a critical technology for accelerator-driven sub-critical reactors (ADS) and many HEP programs (Muon Collider). These high-intensity GeV-range proton drivers are particularly challenging, encountering duty cycle and space-charge limits in the synchrotron and machine size concerns in the weaker-focusing cyclotrons; a 10-20 MW proton driver is not presently considered technically achievable with conventional re-circulating accelerators. One, as-yet, unexplored re-circulating accelerator, the Fixed-field Alternating Gradient, or FFAG, is an attractive alternative to the cyclotron. Its strong focusing optics are expected to mitigate space charge effects, and a recent innovation in design has coupled stable tunes with isochronous orbits, making the FFAG capable of fixed-frequency, CW acceleration, as in the classical cyclotron. This paper reports on these new advances in FFAG accelerator technology and references advanced modeling tools for fixed-field accelerators developed for and unique to the code COSY INFINITY.

Johnstone, C.; /Fermilab; Berz, M.; Makino, K.; /Michigan State U.; Snopok, P.; /IIT, Chicago

2011-04-01T23:59:59.000Z

158

EOCR CONTROL ROD AND DRIVER FUEL HYDRAULIC TESTS  

SciTech Connect

The EOCR prototype control rod, control rod drive, and driver fuel assembly were extensively tested in 500 deg F Santowax and 132 deg F water. These tests not only established the operating characteristics of these assemblies but also revealed a number of deficiencies in the various components. The modifications required were tested to establish the satisfactory performance of the modified components. Flow versus pressure differential measurements were performed on the driver fuel and the control rod. These measuremerts were also performed on various sized orifices in both assemblies to facilitate final orifice sizing when the final physics and heat transfer calculations have been completed. Scram insertion time curves were obtained for a variety of control rod configurations and test conditions. These curves not only established the scram insertion reliability of the control rod but also provided the basis for performing a control rod force analysis. Included are descriptions of the control rod, control rod drive, and driver fuel assembly together with descriptions of their method of operation. (auth)

Harrison, L.J.

1962-10-19T23:59:59.000Z

159

Be a Safe and Efficient Winter Driver | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Be a Safe and Efficient Winter Driver Be a Safe and Efficient Winter Driver Be a Safe and Efficient Winter Driver January 13, 2009 - 8:29am Addthis Drew Bittner Web Manager, Office of Energy Efficiency and Renewable Energy As I write this post, the Midwest and northern states are in the grip of a deep freeze. Temperatures are extremely low, and when wind chill is added in, it's barely possible to set foot outside. But if you are like me, you still need to get to work. For most of the country, that means driving-at least a little, if not an hour-plus commute each way. So why not make your vehicle efficient? We've been advising you on ways to make the home more energy smart, so let's talk about your car for a moment. One of the best ways to be energy smart with your car is also one of the wisest: drive sensibly. Aggressive driving wastes gas. Jackrabbit starts,

160

Investigating a model of optimised AGN feedback  

E-Print Network (OSTI)

Feedback heating from AGN in massive galaxies and galaxy clusters can be thought of as a naturally occurring control system which plays a significant role in regulating both star formation rates and the X-ray luminosity of the surrounding hot gas. In the simplest case, negative feedback can be viewed as a system response that is `optimised' to minimise deviations from equilibrium, such that the system rapidly evolves towards a steady state. However, a general solution of this form appears to be incompatible with radio observations which indicate intermittent AGN outbursts. Here, we explore an energetically favourable scenario in which feedback is required to both balance X-ray gas cooling, and minimise the sum of the energy radiated by the gas and the energy injected by the AGN. This specification is equivalent to ensuring that AGN heating balances the X-ray gas cooling with minimum black hole growth. It is shown that minimum energy heating occurs in discrete events, and not at a continuous, constant level. Furthermore, systems with stronger feedback experience proportionally more powerful heating events, but correspondingly smaller duty cycles. Interpreting observations from this perspective would imply that stronger feedback occurs in less massive objects - elliptical galaxies, rather than galaxy clusters. One direct consequence of this effect would be that AGN heating events are sufficiently powerful to expel hot gas from the gravitational potential of a galaxy, but not a galaxy cluster, which is consistent with theoretical explanations for the steepening of the L_X-T relation at temperatures below 1-2 keV.

Edward C. D. Pope

2011-03-02T23:59:59.000Z

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


161

Time-Varying Climate Sensitivity from Regional Feedbacks  

Science Conference Proceedings (OSTI)

The sensitivity of global climate with respect to forcing is generally described in terms of the global climate feedback—the global radiative response per degree of global annual mean surface temperature change. While the global climate feedback ...

Kyle C. Armour; Cecilia M. Bitz; Gerard H. Roe

2013-07-01T23:59:59.000Z

162

Inductive compensation of operational amplifiers in feedback circuits  

E-Print Network (OSTI)

In this thesis I designed, implemented, and tested an integrated-circuit feedback compensator that uses inductors as compensation elements. Introducing inductors as feedback elements makes it possible to implement lead ...

Adams, Douglas Jay Kozak

2010-01-01T23:59:59.000Z

163

Feedback | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Feedback Feedback Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 Print Text Size: A A A RSS Feeds...

164

Comments on “Current GCMs' Unrealistic Negative Feedback in the Arctic”  

Science Conference Proceedings (OSTI)

In contrast to prior studies showing a positive lapse-rate feedback associated with the Arctic inversion, Boé et al. reported that strong present-day Arctic temperature inversions are associated with stronger negative longwave feedbacks and thus ...

Felix Pithan; Thorsten Mauritsen

2013-10-01T23:59:59.000Z

165

Comments on “Current GCMs’ Unrealistic Negative Feedback in the Arctic”  

Science Conference Proceedings (OSTI)

Contrasting our expectation of a positive lapse-rate feedback associated with the Arctic inversion, Boé et al. (2009) report that strong present-day Arctic temperature inversions are associated with stronger negative longwave feedbacks and thus ...

Felix Pithan; Thorsten Mauritsen

166

Longitudinal and Transverse Feedback Kickers for the ALS  

E-Print Network (OSTI)

Collective Effects in the ALS", 1. M. Byrd and J. Corlett,Feedback Kickers for the ALS J. N. Corlett, J. Johnson, G.bunch feedback systems at the ALS. Transverse kickers are of

Corlett, J.N.

2011-01-01T23:59:59.000Z

167

Tracking and learning: exploring dual functions of residential energy feedback  

Science Conference Proceedings (OSTI)

Residential energy feedback is widely promoted as a promising form of persuasive technology based on its effectiveness in field studies. However, previous research has treated "feedback" as a unified construct, despite a wide variety of device types ... Keywords: energy, feedback, persuasive technology, psychology, usability

Beth Karlin

2011-06-01T23:59:59.000Z

168

Reorientation of linear switched systems using state feedback  

Science Conference Proceedings (OSTI)

A characterisation is obtained for the controlled and conditioned invariants of a linear switched system under feedback. The existence of a maximal consistent subspace with feedback is shown and is computed. A few sufficient conditions under which the ... Keywords: Consistent subspace, Jump subspace, Linear complementarity systems, State feedback, Switched systems, Well-posedness

H. Priyadarshan, Harish K. Pillai

2013-06-01T23:59:59.000Z

169

Climate Feedbacks in CCSM3 under Changing CO2 Forcing. Part II: Variation of Climate Feedbacks and Sensitivity with Forcing  

Science Conference Proceedings (OSTI)

Are equilibrium climate sensitivity and the associated radiative feedbacks a constant property of the climate system, or do they change with forcing magnitude and base climate? Using the radiative kernel technique, feedbacks and climate ...

Alexandra K. Jonko; Karen M. Shell; Benjamin M. Sanderson; Gokhan Danabasoglu

2013-05-01T23:59:59.000Z

170

External-Feedback Laser Cooling of Gases  

E-Print Network (OSTI)

We analyze the laser cooling of polarizable particles by continuous dispersive position detection and active feedback. The magnitude of the dissipative force is proportional to the particles' photon scattering rate into the detector, while its velocity dependence is determined by the programmable frequency dependence of the loop gain. The method combines final temperatures near the recoil limit with large velocity capture range, and is applicable to multilevel atoms or molecules.

Vladan Vuletic; Adam T. Black; James K. Thompson

2004-10-21T23:59:59.000Z

171

Photoionising feedback in star cluster formation  

E-Print Network (OSTI)

We present the first ever hydrodynamic calculations of star cluster formation that incorporate the effect of feedback from ionising radiation. In our simulations, the ionising source forms in the cluster core at the intersection of several dense filaments of inflowing gas. We show that these filaments collimate ionised outflows and suggest such an environmental origin for at least some observed outflows in regions of massive star formation. Our simulations show both positive feedback (i.e. promotion of star formation in neutral gas compressed by expanding HII regions) and negative feedback (i.e. suppression of the accretion flow in to the central regions). We show that the volume filling factor of ionised gas is very different in our simulations than would result from the case where the central source interacted with an azimuthally smoothed gas density distribution. As expected, gas density is the key parameter in determining whether clusters are unbound by photoionising radiation. Nevertheless, we find - on account of the acceleration of a small fraction of the gas to high velocities in the outflows - that the deposition in the gas of an energy that exceeds the binding energy of the cluster is not a sufficient criterion for unbinding the bulk of the cluster mass.

J. E. Dale; I. A. Bonnell; C. J. Clarke; M. R. Bate

2005-01-10T23:59:59.000Z

172

V-217: Microsoft Windows NAT Driver ICMP Packet Handling Denial of Service  

NLE Websites -- All DOE Office Websites (Extended Search)

7: Microsoft Windows NAT Driver ICMP Packet Handling Denial of 7: Microsoft Windows NAT Driver ICMP Packet Handling Denial of Service Vulnerability V-217: Microsoft Windows NAT Driver ICMP Packet Handling Denial of Service Vulnerability August 14, 2013 - 6:00am Addthis PROBLEM: A vulnerability was reported in the Windows NAT Driver PLATFORM: Windows Server 2012 ABSTRACT: This security update resolves a vulnerability in the Windows NAT Driver in Microsoft Windows REFERENCE LINKS: Secunia Advisory SA54420 Security Tracker ID 1028909 Microsoft Security Bulletin MS13-064 CVE-2013-3182 IMPACT ASSESSMENT: Medium DI SCUSSION: The vulnerability is caused due to an error within the Windows NAT Driver when handling ICMP packets and can be exploited to cause the system to stop responding IMPACT: Denial of Service SOLUTION: Vendor has released a security update

173

Residential Feedback Devices and Programs: Opportunities for Natural Gas  

SciTech Connect

Behavior-based approaches have been a growing interest in the energy efficiency field over recent years and the use of residential energy feedback has garnered particular interest. By providing an increased level of detail, feedback can greatly increase a consumer's understanding of how energy is used in their home. This project reviewed the existing body of research on electricity feedback to identify parallel lessons for gas, discussed the benefits and challenges of different types of feedback, and identifying three feedback options that show strong potential for natural gas savings.

Kerr, R.; Tondro, M.

2012-12-01T23:59:59.000Z

174

Projecting Fatalities in Crashes Involving Older Drivers, 2000-2025  

Science Conference Proceedings (OSTI)

As part of this research effort, we developed a new methodology for projecting elderly traffic crash fatalities. This methodology separates exposure to crashes from crash risk per se, and further divides exposure into two components, the number of miles driven and the likelihood of being a driver. This component structure permits conceptually different determinants of traffic fatalities to be projected separately and has thorough motivation in behavioral theory. It also permits finer targeting of particular aspects of projections that need improvement and closer linking of projections to possible policy instruments for influencing them.

Hu, P.S.

2001-03-23T23:59:59.000Z

175

Information-technology approach to quantum feedback control  

E-Print Network (OSTI)

Quantum control theory is profitably reexamined from the perspective of quantum information, two results on the role of quantum information technology in quantum feedback control are presented and two quantum feedback control schemes, teleportation-based distant quantum feedback control and quantum feedback control with quantum cloning, are proposed. In the first feedback scheme, the output from the quantum system to be controlled is fed back into the distant actuator via teleportation to alter the dynamics of system. The result theoretically shows that it can accomplish some tasks such as distant feedback quantum control that Markovian or Bayesian quantum feedback can't complete. In the second feedback strategy, the design of quantum feedback control algorithms is separated into a state recognition step, which gives "on-off" signal to the actuator through recognizing some copies from the cloning machine, and a feedback (control) step using another copies of cloning machine. A compromise between information acquisition and measurement disturbance is established, and this strategy can perform some quantum control tasks with coherent feedback.

Dao-Yi Dong; Chen-Bin Zhang; Zong-Hai Chen

2005-03-01T23:59:59.000Z

176

Effects of feedback on residential electricity consumption: A literature review  

SciTech Connect

This report reviews 17 studies assessing the effect of information feedback on residential electricity consumption. Most of the studies were conducted in experimental or quasi-experimental conditions. The studies reviewed used (1) both feedback and incentives, (2) goal setting, (3) cost information feedback, and (4) displays. The study findings, taken together, provide some evidence that feedback is effective in reducing electricity consumption, although questions remain concerning the conditions under which feedback can best be provided. Reductions in consumption found in most of the studies ranged from 5% to 20%. Utility companies are the most likely source of feedback information for residential customers. Three of the studies investigated utility feedback projects. The report discusses the policy implications of these as well as the other studies. The report also lists questions remaining to be researched. 13 refs., 1 tab.

Farhar, B.C.; Fitzpatrick, C.

1989-01-01T23:59:59.000Z

177

The Outlook for Electricity Supply and Demand to 2035: Key Drivers  

U.S. Energy Information Administration (EIA)

U.S. Energy Information Administration Independent Statistics & Analysis www.eia.gov The Outlook for Electricity Supply and Demand to 2035: Key Drivers

178

Video-based lane estimation and tracking for driver assistance: Survey, system, and evaluation  

E-Print Network (OSTI)

2002. [6] W. Enkelmann, “Video-based driver assistance—FromK. Kalaitzakis, “A survey of video processing techniques forand thermal infrared video: Algorithms and experimental

McCall, J C; Trivedi, Mohan Manubhai

2006-01-01T23:59:59.000Z

179

THE DEVELOPMENT OF HEAVY-ION ACCELERATORS AS DRIVERS FOR INERTIALLY CONFINED FUSION  

E-Print Network (OSTI)

The f a s t breeder reactor should in theory solve the fuellight water reactors. The ICF driver could, in theory, serve

Herrmannsfeldt, W.b.

2010-01-01T23:59:59.000Z

180

Energy efficiency in the South Africa crude oil refining industry drivers, barriers and opportunities.  

E-Print Network (OSTI)

??Includes abstract. This study has explored a range of barriers, drivers and opportunities to improving energy performance in the South African crude oil refining industry,… (more)

Bergh, Caitlin.

2012-01-01T23:59:59.000Z

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


181

Utility Integrated Resource Planning: An Emerging Driver of New Renewable Generation in the Western United States  

E-Print Network (OSTI)

Risk: The Treatment of Renewable Energy in Western UtilityEmerging Driver of New Renewable Generation in the WesternEnergy Efficiency and Renewable Energy (Office of Planning,

Bolinger, Mark; Wiser, Ryan

2005-01-01T23:59:59.000Z

182

NETL: IEP - Coal Utilization By-Products : Regulatory Drivers  

NLE Websites -- All DOE Office Websites (Extended Search)

Regulatory Drivers Regulatory Drivers Since 1993, Federal Regulations have treated the four major large-volume CUB's -- fly ash, bottom ash, boiler slag, and flue gas desulfurization (FGD) byproducts -- as solid wastes that do not warrant regulation as hazardous wastes under Subtitle C of RCRA, as long as these CUB’s were not co-managed with other waste materials. On May 22, 2000, EPA published a final Regulatory Determination [PDF-320KB] that retained the hazardous waste exemption for coal utilization by-products. EPA has concluded that fossil fuel combustion wastes do not warrant regulation as hazardous under Subtitle C of RCRA and is retaining the hazardous waste exemption for these wastes. However, the Agency has determined that national non-hazardous waste regulations under RCRA Subtitle D are needed for coal combustion wastes disposed in surface impoundments and landfills and used as minefilling. EPA also concluded beneficial uses of these wastes, other than for minefilling, pose no significant risk and no additional national regulations are needed. This determination affects more than 110 million tons of fossil fuel combustion wastes that are generated each year, virtually all from burning coal.

183

UWB multi-burst transmit driver for averaging receivers  

DOE Patents (OSTI)

A multi-burst transmitter for ultra-wideband (UWB) communication systems generates a sequence of precisely spaced RF bursts from a single trigger event. There are two oscillators in the transmitter circuit, a gated burst rate oscillator and a gated RF burst or RF power output oscillator. The burst rate oscillator produces a relatively low frequency, i.e., MHz, square wave output for a selected transmit cycle, and drives the RF burst oscillator, which produces RF bursts of much higher frequency, i.e., GHz, during the transmit cycle. The frequency of the burst rate oscillator sets the spacing of the RF burst packets. The first oscillator output passes through a bias driver to the second oscillator. The bias driver conditions, e.g., level shifts, the signal from the first oscillator for input into the second oscillator, and also controls the length of each RF burst. A trigger pulse actuates a timing circuit, formed of a flip-flop and associated reset time delay circuit, that controls the operation of the first oscillator, i.e., how long it oscillates (which defines the transmit cycle).

Dallum, Gregory E

2012-11-20T23:59:59.000Z

184

Cloud feedback studies with a physics grid  

SciTech Connect

During this project the investigators implemented a fully parallel version of dual-grid approach in main frame code ICON, implemented a fully conservative first-order interpolation scheme for horizontal remapping, integrated UCLA-LES micro-scale model into ICON to run parallely in selected columns, and did cloud feedback studies on aqua-planet setup to evaluate the classical parameterization on a small domain. The micro-scale model may be run in parallel with the classical parameterization, or it may be run on a "physics grid" independent of the dynamics grid.

Dipankar, Anurag [Max Planck Institute for Meteorology Hamburg; Stevens, Bjorn [Max Planck Institute for Meteorology Hamburg

2013-02-07T23:59:59.000Z

185

Development of a questionnaire for identifying driver's personal values in driving  

Science Conference Proceedings (OSTI)

The speed behavior of drivers is influenced by their personal driving values. It is assumed that these personal values may differ between drivers. In this paper, we describe the development of the Personal Driving Values (PDV) questionnaire. The questionnaire ... Keywords: driving behavior, motivation, questionnaire

Qonita Shahab, Jacques Terken, Berry Eggen

2013-10-01T23:59:59.000Z

186

Simultaneous driver sizing and buffer insertion using a delay penalty estimation technique  

Science Conference Proceedings (OSTI)

To achieve timing closure in a placed design, buffer insertion and driver sizing are two of the most effective transforms that can be applied. Since the driver sizing solution and the buffer insertion solution affect each other, sub-optimal solutions ...

Charles Alpert; Chris Chu; Gopal Gandham; Miloš Hrki?; Jiang Hu; Chandramouli Kashyap; Stephen Quay

2002-04-01T23:59:59.000Z

187

Barriers and drivers for process innovation in the petrochemical industry: A case study  

Science Conference Proceedings (OSTI)

Process innovation and energy efficiency improvement are among the key options to reduce greenhouse gas emissions in petrochemicals production. This case study presents some of the main drivers and barriers to activities aimed at improving existing processes ... Keywords: Barriers, Case study, Drivers, Energy efficiency, O31 Innovation and Invention: Processes and Incentives, Process innovation, Strategic innovation

Tao Ren

2009-12-01T23:59:59.000Z

188

Laser photon statistics in the feedback loop  

E-Print Network (OSTI)

A mere correspondence between the electron statistics and the photon one vanishes in the feedback loop (FBL). It means that the direct photodetection, supplying us with the electron statistics, does not provide us with a wished information about the laser photon statistics. For getting this information we should think up another measurement procedure, and we in the article suggest applying the three-level laser as a auxiliary measuring device. This laser has impressive property, namely, its photon statistics survive information about the initial photon statistics of the laser which excites coherently the three-level medium. Thus, if we choose the laser in the FBL as exciting the three-level laser, then we have an possibility to evaluate its initial photon statistics by means of direct detecting the three-level laser emission. Finally, this approach allows us to conclude the feedback is not capable of creating a regularity in the laser light beam. Contrary, the final photon fluctuations turn out to be always even bigger. The mentioned above feature of the three-level laser takes place only for the strong interaction between the lasers (exciting and excited). It means the initial state of the exciting laser is changed dramatically, so our measurement procedure can not be identified with some non-demolition one.

T. Yu. Golubeva; Yu. M. Golubev

2005-04-23T23:59:59.000Z

189

Some Notes on Wideband Feedback Amplifiers  

DOE R&D Accomplishments (OSTI)

The extension of the passband of wideband amplifiers is a highly important problem to the designer of electronic circuits. Throughout the electronics industry and in many research programs in physics and allied fields where extensive use is made of video amplifiers, the foremost requirement is a passband of maximum width. This is necessary if it is desired to achieve a more faithful reproduction of transient wave forms, a better time resolution in physical measurements, or perhaps just a wider band gain-frequency response to sine wave signals. The art of electronics is continually faced with this omnipresent amplifier problem. In particular, the instrumentation techniques of nuclear physics require amplifiers with short rise times, a high degree of gain stability, and a linear response to high signal levels. While the distributed amplifier may solve the problems of those seeking only a wide passband, the requirements of stability and linearity necessitate using feedback circuits. This paper considers feedback amplifiers from the standpoint of high-frequency performance. The circuit conditions for optimum steady-state (sinusoidal) and transient response are derived and practical circuits (both interstage and output) are presented which fulfill these conditions. In general, the results obtained may be applied to the low-frequency end.

Fitch, V.

1949-03-16T23:59:59.000Z

190

Guidelines for Designing Effective Energy Information Feedback Pilots: Research Protocols  

Science Conference Proceedings (OSTI)

Enhanced and timely information regarding consumers electricity use and costs, known as feedback, may significantly influence their behavior across a broad spectrum of usage and acquisition decisions. Such information feedback has become increasingly important in light of widespread investments in Smart Grid technologies. This report identifies protocols for three phases of energy information feedback pilotsresearch design, analysis, and reportingalong with three example applications. When used as the co...

2010-04-23T23:59:59.000Z

191

EPRI Feedback Pilot Design Workshops: Context and Workshop Materials  

Science Conference Proceedings (OSTI)

EPRI held two Feedback Pilot Design Workshops in 2010 in Columbus, Ohio (hosted by AEP Ohio) and in Dallas, Texas. The workshops were based on the 2010 EPRI report entitled "Guidelines for Designing Effective Energy Information Feedback Pilots: Research Protocols" (Product ID 1020855), which provides guidelines on using experimental design in order to clearly attribute pilot impacts to the feedback treatments. The workshops were developed to guide utilities through the process of using the protocols, as ...

2010-12-08T23:59:59.000Z

192

Drivers and Barriers in the Current Concentrated Solar Power (CSP) Market  

Open Energy Info (EERE)

Drivers and Barriers in the Current Concentrated Solar Power (CSP) Market Drivers and Barriers in the Current Concentrated Solar Power (CSP) Market (Webinar) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Drivers and Barriers in the Current Concentrated Solar Power (CSP) Market (Webinar) Focus Area: Solar Topics: Market Analysis Website: www.leonardo-energy.org/webinar-drivers-and-barriers-current-csp-marke Equivalent URI: cleanenergysolutions.org/content/drivers-and-barriers-current-concentr Language: English Policies: Regulations Regulations: Mandates/Targets This video teaches users about the four major types of concentrating solar power technologies (CSP): parabolic trough, tower concentrators, linear Fresnel lenses and dish engine systems. It also provides an overview of the trends in the market and research that should be performed in order to make

193

\Reuschertrolder driver projectwriteupDeb finalchap10.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

10 - 1 10 - 1 10. SUMMARY, CONCLUSIONS, AND RECOMMENDATIONS 10.1 SUMMARY OF FINDINGS As part of this research effort, we developed a new methodology for projecting elderly traffic crash fatalities. This methodology separates exposure to crashes from crash risk per se, and further divides exposure into two components, the number of miles driven and the likelihood of being a driver. This component structure permits conceptually different determinants of traffic fatalities to be projected separately and has thorough motivation in behavioral theory. It also permits finer targeting of particular aspects of projections that need improvement and closer linking of projections to possible policy instruments for influencing them. 10.1.1 Aggregate Fatality Projections

194

RESULTS FROM RFETS BUILDING 771 PROJECT Activity Name Driver  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

RESULTS FROM RFETS BUILDING 771 PROJECT RESULTS FROM RFETS BUILDING 771 PROJECT Activity Name Driver Pre Review M-H/Yr Post Review Est M-H/Yr Est Potential Reallocable M-H/Yr Savings Est Cost Savings @$50/Hr Pre Review Frequency Suggested Frequency Bin Location Resource Organization Contamination survey in/around Gloveboxes not in use None 364 0 364 $18,200 Semi- annually N/A Cancellati on Radiation Protection Contamination Survey upon receipt of rad materials None 0 0 0 $0 As required N/A Cancellati on Radiation Protection A/S - Posting areas with potential > 10% DAC 10CFR835 2080 0 2080 $104,000 As required N/A Cancellati on Radiation Protection A/S - Use of respirators where potential for > 10% DAC 10CFR835 RCM Art 555 2080 0 2080 $104,000 As required N/A Cancellati on Radiation

195

Analysis of IFR driver fuel hot channel factors  

Science Conference Proceedings (OSTI)

Thermal-hydraulic uncertainty factors for Integral Fast Reactor (IFR) driver fuels have been determined based primarily on the database obtained from the predecessor fuels used in the IFR prototype, Experimental Breeder Reactor II. The uncertainty factors were applied to the channel factors (HCFs) analyses to obtain separate overall HCFs for fuel and cladding for steady-state analyses. A ``semistatistical horizontal method`` was used in the HCFs analyses. The uncertainty factor of the fuel thermal conductivity dominates the effects considered in the HCFs analysis; the uncertainty in fuel thermal conductivity will be reduced as more data are obtained to expand the currently limited database for the IFR ternary metal fuel (U-20Pu-10Zr). A set of uncertainty factors to be used for transient analyses has also been derived.

Ku, J.Y.; Chang, L.K.; Mohr, D.

1994-03-01T23:59:59.000Z

196

Feedback communication systems : fundamental limits and control-theoretic approach  

E-Print Network (OSTI)

to communication with feedback: Fundamental limits and codeand P. Viswanath. Fundamentals of Wireless Communication.Communication Systems: Fundamental Limits and Control-

Ardestanizadeh, Ehsan

2010-01-01T23:59:59.000Z

197

Beam-based Feedback for the Linac Coherent Light Source  

SciTech Connect

Beam-based feedback control loops are required by the Linac Coherent Light Source (LCLS) program in order to provide fast, single-pulse stabilization of beam parameters. Eight transverse feedback loops, a 6 x 6 longitudinal feedback loop, and a loop to maintain the electron bunch charge were successfully prototyped in MATLAB for the LCLS, and have been maintaining stability of the LCLS electron beam at beam rates up to 30Hz. In the final commissioning phase of LCLS the beam will be operating at up to 120Hz. In order to run the feedback loops at beam rate, the feedback loops will be implemented in EPICS IOCs with a dedicated ethernet multi-cast network. This paper will discuss the design of the beam-based Fast Feedback System for LCLS. Topics include MATLAB feedback prototyping, algorithm for 120Hz feedback, network design for fast data transport, actuator and sensor design for single-pulse control and sensor readback, and feedback configuration and runtime control.

Fairley, D.; Allison, S.; Chevtsov, S.; Chu, P.; Decker, F.J.; Emma, P.; Frisch, J.; Himel, T.; Kim, K.; Krejcik, P.; Loos, H.; Lahey, T.; Natampalli, P.; Peng, S.; Rogind, D.; Shoaee, H.; Straumann, T.; Williams, E.; White, G.; Wu, J.; Zelazney, M.; /SLAC

2010-02-11T23:59:59.000Z

198

Combining radial basis function neural network and genetic algorithm to improve HDD driver IC chip scale package assembly yield  

Science Conference Proceedings (OSTI)

In recent years, the future trend of micro HDD driver IC for large capacity micro HDD is to become lighter, thinner, shorter and smaller. Among all the options available for micro HDD driver IC's assembly, warpage is an important issue related to micro ... Keywords: Assembly yield, Driver IC, GA, RBFN, Warpage

M. L. Huang; Y. H. Hung

2008-01-01T23:59:59.000Z

199

Combustion diagnostic for active engine feedback control  

DOE Patents (OSTI)

This invention detects the crank angle location where combustion switches from premixed to diffusion, referred to as the transition index, and uses that location to define integration limits that measure the portions of heat released during the combustion process that occur during the premixed and diffusion phases. Those integrated premixed and diffusion values are used to develop a metric referred to as the combustion index. The combustion index is defined as the integrated diffusion contribution divided by the integrated premixed contribution. As the EGR rate is increased enough to enter the low temperature combustion regime, PM emissions decrease because more of the combustion process is occurring over the premixed portion of the heat release rate profile and the diffusion portion has been significantly reduced. This information is used to detect when the engine is or is not operating in a low temperature combustion mode and provides that feedback to an engine control algorithm.

Green, Jr., Johney Boyd (Knoxville, TN); Daw, Charles Stuart (Knoxville, TN); Wagner, Robert Milton (Knoxville, TN)

2007-10-02T23:59:59.000Z

200

An Overview of Analog Feedback Part II: Amplifier Configurations in Generic Device Technologies  

Science Conference Proceedings (OSTI)

In this second installment of a two part paper that overviews analog feedback circuits, computationally efficient and general feedback analysis techniques applicable to virtually all three and four terminal device technologies are formulated. As developed ... Keywords: closed loop, compensation, damping, feedback, global feedback, local feedback, loop gain, return ratio, signal flow theory

G. Palumbo; J. Choma, Jr.

1998-11-01T23:59:59.000Z

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


201

Sliding Mode Pulsed Averaging IC Drivers for High Brightness Light Emitting Diodes  

SciTech Connect

This project developed new Light Emitting Diode (LED) driver ICs associated with specific (uniquely operated) switching power supplies that optimize performance for High Brightness LEDs (HB-LEDs). The drivers utilize a digital control core with a newly developed nonlinear, hysteretic/sliding mode controller with mixed-signal processing. The drivers are flexible enough to allow both traditional microprocessor interface as well as other options such as “on the fly” adjustment of color and brightness. Some other unique features of the newly developed drivers include • AC Power Factor Correction; • High power efficiency; • Substantially fewer external components should be required, leading to substantial reduction of Bill of Materials (BOM). Thus, the LED drivers developed in this research : optimize LED performance by increasing power efficiency and power factor. Perhaps more remarkably, the LED drivers provide this improved performance at substantially reduced costs compared to the present LED power electronic driver circuits. Since one of the barriers to market penetration for HB-LEDs (in particular “white” light LEDs) is cost/lumen, this research makes important contributions in helping the advancement of SSL consumer acceptance and usage.

Dr. Anatoly Shteynberg, PhD

2006-08-17T23:59:59.000Z

202

On optimal feedback allocation in multichannel wireless downlinks  

Science Conference Proceedings (OSTI)

This paper studies feedback resource allocation in the downlink of a Frequency Division Duplex (FDD) multichannel wireless system. We consider a downlink network with a single base station, L shared channels and N mobile users. Throughput ... Keywords: downlink scheduling, limited feedback, throughput optimality

Ming Ouyang; Lei Ying

2010-09-01T23:59:59.000Z

203

Policing congestion response in an internetwork using re-feedback  

Science Conference Proceedings (OSTI)

This paper introduces a novel feedback arrangement, termed re-feedback. It ensures metrics in data headers such as time to live and congestion notification will arrive at each relay carrying a truthful prediction of the remainder of their path. We propose ... Keywords: QoS, characterisation, congestion, incentives, policing

Bob Briscoe; Arnaud Jacquet; Carla Di Cairano-Gilfedder; Alessandro Salvatori; Andrea Soppera; Martin Koyabe

2005-08-01T23:59:59.000Z

204

Collecting relevance feedback on titles and photographs in weblog posts  

Science Conference Proceedings (OSTI)

We investigate new interfaces that allow users to specify topics of interest in streams of weblog stories by providing relevance feedback to a search algorithm. Noting that weblog stories often contain photographs taken by the blogger during the course ... Keywords: photographs, relevance feedback, user interfaces for machine learning, user study, weblogs

Amy Campbell; Christopher Wienberg; Andrew Gordon

2012-02-01T23:59:59.000Z

205

Enhancing query translation with relevance feedback in translingual information retrieval  

Science Conference Proceedings (OSTI)

As an effective technique for improving retrieval effectiveness, relevance feedback (RF) has been widely studied in both monolingual and translingual information retrieval (TLIR). The studies of RF in TLIR have been focused on query expansion (QE), in ... Keywords: Query expansion, Relevance feedback, Translation enhancement, Translingual information retrieval

Daqing He; Dan Wu

2011-01-01T23:59:59.000Z

206

Designing eco-feedback systems for everyday life  

Science Conference Proceedings (OSTI)

Eco-feedback systems currently frame householders as micro-resource managers, who weigh up the costs and benefits of their consumption, and make autonomous, rational and efficient decisions. Reporting on findings from a qualitative study of three Australian ... Keywords: consumption, demand management, eco-feedback, energy, smart meters, sustainable hci, water

Yolande A.A. Strengers

2011-05-01T23:59:59.000Z

207

Double visual feedback in the rehabilitation of upper limb  

Science Conference Proceedings (OSTI)

Stroke patients may have limb paralysis or disturbance of consciousness. In the rehabilitation system, the main task of human-computer interaction focused on visual interaction. In this study, it has been confirmed that the visual feedback system in ... Keywords: consciousness, rehabilitation, visual feedback

Liu Enchen; Sui Jianfeng; Christopher Young; Ji Linhong

2011-07-01T23:59:59.000Z

208

Cloud Feedbacks in the Climate System: A Critical Review  

Science Conference Proceedings (OSTI)

This paper offers a critical review of the topic of cloud–climate feedbacks and exposes some of the underlying reasons for the inherent lack of understanding of these feedbacks and why progress might be expected on this important climate problem ...

Graeme L. Stephens

2005-01-01T23:59:59.000Z

209

The Information Flow and Capacity of Channels with Noisy Feedback  

E-Print Network (OSTI)

In this paper, we consider some long-standing problems in communication systems with access to noisy feedback. We introduce a new notion, the residual directed information, to capture the effective information flow (i.e. mutual information between the message and the channel outputs) in the forward channel. In light of this new concept, we first investigate discrete memoryless channels (DMC) with noisy feedback and prove that the noisy feedback capacity is not achievable by using any typical closed-loop encoder (non-trivially taking feedback information to produce channel inputs). We then provide a channel coding theorem in terms of the residual directed information to characterize the capacity of channels with noisy feedback. We further show that the capacity can be simply characterized by the causal conditional directed information when channels satisfy the strong converse property.

Li, Chong

2011-01-01T23:59:59.000Z

210

Effects of Supernova Feedback on the Formation of Galaxies  

E-Print Network (OSTI)

We study the effects of Supernova (SN) feedback on the formation of galaxies using hydrodynamical simulations in a Lambda-CDM cosmology. We use an extended version of the code GADGET-2 which includes chemical enrichment and energy feedback by Type II and Type Ia SN, metal-dependent cooling and a multiphase model for the gas component. We focus on the effects of SN feedback on the star formation process, galaxy morphology, evolution of the specific angular momentum and chemical properties. We find that SN feedback plays a fundamental role in galaxy evolution, producing a self-regulated cycle for star formation, preventing the early consumption of gas and allowing disks to form at late times. The SN feedback model is able to reproduce the expected dependence on virial mass, with less massive systems being more strongly affected.

Cecilia Scannapieco; Patricia B. Tissera; Simon D. M. White; Volker Springel

2008-08-20T23:59:59.000Z

211

The D9-4 experiment: Improving on the fast flux test facility driver pin  

SciTech Connect

The driver fuel system for the fast Flux Test Facility (FFTF) has proven to be a very robust and reliable spectrum liquid-metal reactor. A series of fuel assembly tests, has now been completed that incorporate unique improvements to extend the lifetime of the driver fuel design to increase the ease of fabrication, and to increase the breeding potential. The D9-4 test was a high-exposure fuel assembly in this series, and detailed examinations of this test have been completed. Commonalities with the standard FFTF driver fuel included dimensions and the use of uranium/plutonium mixed-oxide pellet fuel.

Chastain, S.A. (Westinghouse Hanford Company, Richland, WA (United States))

1993-01-01T23:59:59.000Z

212

A Retroreflective Sheeting Selection Technique for Nighttime Drivers' Needs  

E-Print Network (OSTI)

In this thesis, the author developed a retroreflective sheeting selection technique for traffic signs. Previous research was used to determine the luminance needed by drivers (demand luminance). The author used roadways scenarios to determine the amount of luminance the retroreflective sheeting on a sign would produce (supply luminance). A spreadsheet was developed to determine the performance of different retroreflective sheeting types by comparing the demand and supply luminance for specific roadway scenarios. Using the results of previous studies, three demand luminance levels were created: replacement, adequate, and desirable. The replacement level represents the level of luminance when a sign needs to be replaced and is 2.5 cd/m2. The adequate level is the recommended amount of luminance when installing new traffic signs and is 10 cd/m2. The desirable level is the approximate level when additional luminance has diminishing returns and is 30 cd/m2. Supply luminance on a specific traffic sign was determined by evaluating roadway geometries, sign placement, retroreflective sheeting type and vehicle data. The author reviewed roadway geometries in Texas to estimate typical number of lanes, shoulder widths and horizontal curvature in the US. Sign placement from the MUTCD determined the typical lateral placements, sign heights, and sign twists. Vehicle data included vehicle dimensions and headlamp type. Both the supply and demand luminance were determined for a specific viewing distance for a given scenario. The viewing distance is the distance a driver needs to read or recognize a sign to respond properly. In addition, the type of sign, alphanumeric or symbol, determined how this distance was calculated. The author developed four sign groups to calculate the distance required to read and respond to a traffic sign, including 1) Stop required, 2) Reduction in speed required, 3) Read the message provided, and 4) Change of lane required. For symbol signs, the minimum required visibility distance (MRVD) was determined for the sign group and for text signs, the viewing distance at a legibility index (LI) of 30 ft/in was found. At these distances, the author calculated the supply luminance and then compared it to the demand luminance levels to determine the performance level. The author developed the Retroreflective Sheeting Selection Spreadsheet (RSSS) to allow others to use the methodology presented in this thesis. RSSS allows users to input the roadway data, vehicle data, and sign data. RSSS takes this information and looks up the supply luminance for the scenario. RSSS then compares the supply luminance to the demand luminance levels and outputs the retroreflective sheeting performance level for the scenario.

Paulus, Susan C.

2010-05-01T23:59:59.000Z

213

\Reuschertrolder driver projectwriteupDeb finalchap07.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

Person miles of travel includes travel by any mode or means; VMT/person implies that the person is Person miles of travel includes travel by any mode or means; VMT/person implies that the person is driving the vehicle. GM Project G.6 October 2000 7 - 1 7. VEHICLE MILES TRAVELED 7.1 HISTORICAL TRENDS IN ELDERLY DRIVING The total person miles of travel for all drivers in the United States increased from 2,026 billion miles in 1983 to 2,141 billion miles in 1990 to 2,663 billion miles in 1995, a total increase of 31.4% (U.S. Department of Transportation, 1997B). Historical driving trends among the elderly also show a general increase in the annual amount of VMT per person 1 (Figure 7.1). The age group of persons over 85 have seen the largest increases. Men over 85 drove an average of 1933 miles per year in 1983, a number which more than doubled to 5166

214

Proton Driver Linac for the Frankfurt Neutron Source  

SciTech Connect

The Frankfurt Neutron Source at the Stern-Gerlach-Zentrum (FRANZ) will deliver high neutron fluxes in the energy range of 1 to 500 keV. The Activation Mode provides a high averaged neutron flux created by a cw proton beam of up to 5 mA, while in the Compressor Mode intense neutron pulses of 1 ns length are formed with a repetition rate of up to 250 kHz. The Compressor Mode is well-suited for energy-dependent neutron capture measurements using the Time-of-Flight method in combination with a 4{pi} BaF{sub 2} detector array. The design of the proton driver linac for both operation modes is presented. This includes the volume type ion source, the ExB chopper located in the low energy section, the RFQ-IH combination for beam acceleration and the bunch compressor. Finally, the neutron production at the lithium-7 target and the resulting energy spectrum is described.

Wiesner, C.; Chau, L. P.; Dinter, H.; Droba, M.; Heilmann, M.; Joshi, N.; Maeder, D.; Metz, A.; Meusel, O.; Noll, D.; Podlech, H.; Ratzinger, U.; Reichau, H.; Schempp, A.; Schmidt, S.; Schweizer, W.; Volk, K.; Wagner, C. [Institut fuer Angewandte Physik, Goethe-Universitaet, Max-von-Laue-Str. 1, 60438 Frankfurt/Main (Germany); Reifarth, R. [Institut fuer Angewandte Physik, Goethe-Universitaet, Max-von-Laue-Str. 1, 60438 Frankfurt/Main (Germany); GSI Helmholtzzentrum fuer Schwerionenforschung, Planckstr. 1, 64291 Darmstadt (Germany); Mueller, I.

2010-08-04T23:59:59.000Z

215

Aiming to Green NASCAR's Future: Q&A with Driver Leilani Munter |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Aiming to Green NASCAR's Future: Q&A with Driver Leilani Munter Aiming to Green NASCAR's Future: Q&A with Driver Leilani Munter Aiming to Green NASCAR's Future: Q&A with Driver Leilani Munter August 2, 2010 - 10:00am Addthis Leilani Münter adopts an acre of rainforest for every race she drives in. | Photo courtesy of Phil Cavali Leilani Münter adopts an acre of rainforest for every race she drives in. | Photo courtesy of Phil Cavali Lindsay Gsell "I feel being a part of NASCAR is where I can make a really big impact in terms of raising awareness about our environmental issues. I'm definitely bringing a new audience to NASCAR and working on bridging the gap between environmentalists and race fans." Leilani Munter Carbon Free Girl Leilani Münter is not your usual NASCAR driver. An avid environmentalist, Münter's goal is to spread an energy efficiency and

216

U-226: Linux Kernel SFC Driver TCP MSS Option Handling Denial of Service  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

6: Linux Kernel SFC Driver TCP MSS Option Handling Denial of 6: Linux Kernel SFC Driver TCP MSS Option Handling Denial of Service Vulnerability U-226: Linux Kernel SFC Driver TCP MSS Option Handling Denial of Service Vulnerability August 2, 2012 - 7:00am Addthis PROBLEM: Linux Kernel SFC Driver TCP MSS Option Handling Denial of Service Vulnerability PLATFORM: Linux Kernel 3.2.x ABSTRACT: The Linux kernel is prone to a remote denial-of-service vulnerability. reference LINKS: Secunia Advisory SA50081 Bugtraq ID: 54763 Vulnerability Report: Linux Kernel 3.2.x The Linux Kernel Archives Original Advisory CVE-2012-3412 IMPACT ASSESSMENT: Medium Discussion: A vulnerability has been reported in Linux Kernel, which can be exploited by malicious people to cause a DoS (Denial of Service). The vulnerability is caused due to an error in the Solarflare network

217

Summary of sessions B and F: High intensity linacs and frontend & proton drivers  

SciTech Connect

This paper summarizes the sessions B&F of the 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity & High Brightness Hadron Beams held in Bensheim, Germany. It covers high intensity linacs, front ends and proton driver topics.

Ferdinand, R.; /Saclay; Chou, W.; /Fermilab; Galambos, J.; /Oak Ridge

2005-01-01T23:59:59.000Z

218

U-226: Linux Kernel SFC Driver TCP MSS Option Handling Denial...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

August 2, 2012 - 7:00am Addthis PROBLEM: Linux Kernel SFC Driver TCP MSS Option Handling Denial of Service Vulnerability PLATFORM: Linux Kernel 3.2.x ABSTRACT: The Linux...

219

Figure 72. Vehicle miles traveled per licensed driver, 1970-2040 ...  

U.S. Energy Information Administration (EIA)

Sheet3 Sheet2 Sheet1 Figure 72. Vehicle miles traveled per licensed driver, 1970-2040 (thousand miles) History Reference case 1970.00 $8.69 1971.00 $9.01

220

Efficacy, national/international practices and motivational factors of lifelong driver education for the aging population  

E-Print Network (OSTI)

In a society facing a significant increase in its aging population, older driver education/training is emerging as a potential solution to help seniors drive more safely, thus maintaining their mobility and quality of life. ...

Israels, Richard (Richard Steven)

2006-01-01T23:59:59.000Z

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


221

Analysis of Tidal Straining as Driver for Estuarine Circulation in Well-Mixed Estuaries  

Science Conference Proceedings (OSTI)

Tidal straining, which can mathematically be described as the covariance between eddy viscosity and vertical shear of the along-channel velocity component, has been acknowledged as one of the major drivers for estuarine circulation in channelized ...

Hans Burchard; Henk M. Schuttelaars

2012-02-01T23:59:59.000Z

222

DriverGuard: a fine-grained protection on I/O flows  

Science Conference Proceedings (OSTI)

Most commodity peripheral devices and their drivers are geared to achieve high performance with security functions being opted out. The absence of security measures invites attacks on the I/O data and consequently threats those applications feeding on ...

Yueqiang Cheng; Xuhua Ding; Robert H. Deng

2011-09-01T23:59:59.000Z

223

Emergency vehicle driver training by Texas municipal police departments: a descriptive study  

E-Print Network (OSTI)

Because of the increase in the number of monetary civil judgments arising out of police emergency driving situations, law enforcement agencies are taking a critical look at their emergency driver training programs. At the present time there is no state mandated emergency driver training program in Texas for police officers. To help promote a statewide emergency vehicle driver training program, this study was undertaken to provide answers to the Following questions: 1) Is competency-based emergency vehicle driver training being taught by Texas municipal police departments?; 2) Does the size of a department have an effect on what is taught within these driver training programs?; 3) Has having an emergency vehicle driver training program had an effect on the number of collisions during emergency driving situations?; and 4) What do police administrators consider to be the advantages and disadvantages of having an emergency vehicle driver training program? A review of the literature suggests that police departments nationwide that have no emergency vehicle driver training program or an inadequate program are at risk of becoming entangled in expensive and time consuming litigation. To accomplish the objectives of the study, 123 Texas municipal police departments with 26 or more sworn police officers were mailed questionnaires that were to be completed and returned to the researcher. The questionnaire requested information on the current emergency driver training program of each agency. Results indicated that there was little done to train municipal police officers in emergency driving. The larger the police department, the more likely the department was to have a driver training program, but these programs seldom encompassed a complete competency-based, task related curriculum. The reasons given for the inadequate training by the majority of police departments centered around monetary constraints. It can be concluded that, without proper attention being given to improving emergency driver training for municipal police officers, municipalities face increasing civil litigation. It is recommended that the state mandate adequate training programs, provide regional training facilities, and require statistical analysis of all traffic collisions involving emergency vehicles.

Westmoreland, Robert Lawrence

1994-01-01T23:59:59.000Z

224

THE PLUTONIUM FEEDBACK APPROACH TO NUCLEAR POWER  

SciTech Connect

Nuclear parameter variations are presented for sodium graphite reactors using Pu-spiked natural U as fuel. The fuel feed is assumed to be natural U, and the important variables are the initial amount of excess reactivity, lattice spacing, and alpha , the ratio of Pu/sup 239/ to U/sup 235/ in the feed material. The system is called "steady state" in that the ratios, N/sub 40/N/sub 49/ = sigma /sub c(49)// sigma /sub a(40)/ and N/sub 41//N/sub 4 9/ = sigma /sub c(49)/ / sigma /sub a(41)/, obtained from setting the build-up equations to zero are assumed for the feed concentrations, and the feed material to the reactor is always the same. During irradiation, the U/sup 235/ and U/sup 238/ concentrations steadily decline while the Pu isotope concentrations initially increase, then decline. To ensure sufficient plutonium for feed material, it is necessary to remove the fuel from the reactor before the Pu content drops below its initial value. Although the reactivity variations presented were calculated specifically for sodium graphite reactors, they may be applied to any thermal reactor using Pu-spiked natural U as fuel. The reactivity changes are determined primarily by the fuel characteristics and are only slightly dependent on the other material in the reactor core. An analysis which estimates the effect of Pu feedback opcration fuel costs is given. (auth) in terms of nuclear power cost reduction are discussed (auth)

Roderick, C.

1955-04-15T23:59:59.000Z

225

[Feedback control mechanisms of plant cell expansion  

DOE Green Energy (OSTI)

We have generated considerable evidence for the significance of wall stress relaxation in the control of plant growth and found that several agents (gibberellin, light, genetic loci for dwarf stature) influence growth rate via alteration of wall relaxation. We have refined our methods for measuring wall relaxation and, moreover, have found that wall relaxation properties bear only a distance relationship to wall mechanical properties. We have garnered novel insights into the nature of cell expansion mechanisms by analyzing spontaneous fluctuations of plant growth rate in seedlings. These experiments involved the application of mathematical techniques for analyzing growth rate fluctuations and the development of new instrumentation for measuring and forcing plant growth in a controlled fashion. These studies conclude that growth rate fluctuations generated by the plant as consequence of a feedback control system. This conclusion has important implications for the nature of wall loosening processes and demands a different framework for thinking about growth control. It also implies the existence of a growth rate sensor.

Cosgrove, D.J.

1992-01-01T23:59:59.000Z

226

Data, Feedback, & Awareness Lead to Big Energy Savings  

NLE Websites -- All DOE Office Websites (Extended Search)

energy feedback and energy feedback and "staff monitors" to reinforce commu- nication and activity led to improved routine practices and significant energy savings. Members of the Navy Region Southwest Metro San Diego regional energy management team with an example poster from their energy awareness program. (Photo courtesy FEMP/NRSMSD.) Data, Feedback, & Awareness Lead to Big Energy Savings The Navy Region Southwest Metro San Diego Area (NRSMSD) regional energy management team achieved significant energy savings at the three major complexes: Naval Base Coronado, Naval Base San Diego, and Naval Base Point Loma, result- ing largely from a well organized energy awareness program centered on energy data

227

Data, Feedback, & Awareness Lead to Big Energy Savings  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

monthly energy feedback and monthly energy feedback and "staff monitors" to reinforce commu- nication and activity led to improved routine practices and significant energy savings. Members of the Navy Region Southwest Metro San Diego regional energy management team with an example poster from their energy awareness program. (Photo courtesy FEMP/NRSMSD.) Data, Feedback, & Awareness Lead to Big Energy Savings The Navy Region Southwest Metro San Diego Area (NRSMSD) regional energy management team achieved significant energy savings at the three major complexes: Naval Base Coronado, Naval Base San Diego, and Naval Base Point Loma, result- ing largely from a well organized energy awareness program centered on energy data

228

Multiple Access Channels with Generalized Feedback and Confidential Messages  

E-Print Network (OSTI)

This paper considers the problem of secret communication over a multiple access channel with generalized feedback. Two trusted users send independent confidential messages to an intended receiver, in the presence of a passive eavesdropper. In this setting, an active cooperation between two trusted users is enabled through using channel feedback in order to improve the communication efficiency. Based on rate-splitting and decode-and-forward strategies, achievable secrecy rate regions are derived for both discrete memoryless and Gaussian channels. Results show that channel feedback improves the achievable secrecy rates.

Tang, Xiaojun; Spasojevic, Predrag; Poor, H Vincent

2007-01-01T23:59:59.000Z

229

Life-style and travel demand: From Special Report 220: A Look Ahead: Year 2020, Transportation Research Board, National Research Council, Washington, DC, 1988, pp. 149–189. Reproduced with permission of TRB  

E-Print Network (OSTI)

nance charges Gasoline and motor oil Maintenance, repairs,nance charges Gasoline and motor oil Maintenance, repairs,nance charges Gasoline and motor oil Maintenance, repairs,

Kitamura, Ryuichi

2009-01-01T23:59:59.000Z

230

Pulsed power drivers for ICF and high energy density physics  

SciTech Connect

Nanosecond Pulsed Power Science and Technology has its origins in the 1960s and over the past decade has matured into a flexible and robust discipline capable of addressing key physics issues of importance to ICF and high Energy Density Physics. The major leverage provided by pulsed power is its ability to generate and deliver high energy and high power at low cost and high efficiency. A low-cost, high-efficiency driver is important because of the very large capital investment required for multi-megajoule ignition-class systems. High efficiency is of additional importance for a commercially viable inertial fusion energy option. Nanosecond pulsed power has been aggressively and successfully developed at Sandia over the past twenty years. This effort has led to the development of unique multi-purpose facilities supported by highly capable diagnostic, calculational and analytic capabilities. The Sandia Particle-beam Fusion Program has evolved as part of an integrated national ICF Program. It applies the low-cost, high-efficiency leverage provided by nanosecond pulsed power systems to the longer-term goals of the national program, i.e., the Laboratory Microfusion Facility and Inertial Fusion Energy. A separate effort has led to the application of nanosecond pulsed power to the generation of intense, high-energy laboratory x-ray sources for application to x-ray laser and radiation effects science research. Saturn is the most powerful of these sources to date. It generates {approximately}500 kilojoules of x-rays from a magnetically driven implosion (Z-pinch). This paper describes results of x-ray physics experiments performed on Saturn, plans for a new Z-pinch drive capability for PBFA-II, and a design concept for the proposed {approximately}15 MJ Jupiter facility. The opportunities for ICF-relevant research using these facilities will also be discussed.

Ramirez, J.J.; Matzen, M.K.; McDaniel, D.H.

1995-12-31T23:59:59.000Z

231

CRAD, Feedback and Continuous Improvement - DOE Headquarters - December 4,  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CRAD, Feedback and Continuous Improvement - DOE Headquarters - CRAD, Feedback and Continuous Improvement - DOE Headquarters - December 4, 2007 CRAD, Feedback and Continuous Improvement - DOE Headquarters - December 4, 2007 December 4, 2007 Feedback and Continuous Improvement Inspection Criteria and Approach - DOE Headquarters (HSS CRAD 64-22) The Department of Energy (DOE) Headquarters line management has established and implemented effective oversight processes that evaluate the adequacy and effectiveness of field element assurance systems and DOE oversight processes. DOE Headquarters assurance system programs and processes are in accordance with the policy and key elements outlined in DOE Policy 226.1, Department of Energy Oversight Policy; DOE Order 226. 1A, Implementation of Department of Energy Oversight Policy, Attachment 2, quality assurance

232

CRAD, Feedback and Continuous Improvement - December 4, 2012 | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Feedback and Continuous Improvement - December 4, 2012 Feedback and Continuous Improvement - December 4, 2012 CRAD, Feedback and Continuous Improvement - December 4, 2012 December 4, 2012 Feedback and Continuous Improvement Inspection Criteria and Approach - DOE Field Element (HSS CRAD 45-21, Rev. 1) DOE field element line management has established and implemented effective oversight processes that evaluate the adequacy and effectiveness of contractor assurance systems and DOE oversight processes. DOE field element assurance system programs and processes are in accordance with the policy and key elements outlined in DOE Policy 226.1 B, Department of Energy Oversight Policy; DOE Order 226.1 B, Implementation of Department of Energy Oversight Policy, Attachment 2; quality assurance requirements (as stated in 10 CFR 830, Subpart A, DOE 0 414.1D Quality Assurance and/ or

233

Transmit beamforming for multiple antenna systems with imperfect feedback  

E-Print Network (OSTI)

2.3.1 FDD System . . . . . . . . . . . . . . . . . . . . . .2.3.2 FDD with Finite Rate Feedback (FDDQ) System . 2.3.3loop transmit diversity in FDD WCDMA,” in IEEE Symp. on

Isukapalli, Yogananda R.

2009-01-01T23:59:59.000Z

234

Two Models for Noisy Feedback in MIMO Channels  

E-Print Network (OSTI)

Two distinct models of feedback, suited for FDD (Frequency Division Duplex) and TDD (Frequency Division Duplex) systems respectively, have been widely studied in the literature. In this paper, we compare these two models of feedback in terms of the diversity multiplexing tradeoff for varying amount of channel state information at the terminals. We find that, when all imperfections are accounted for, the maximum achievable diversity order in FDD systems matches the diversity order in TDD systems. TDD systems achieve better diversity order at higher multiplexing gains. In FDD systems, the maximum diversity order can be achieved with just a single bit of feedback. Additional bits of feedback (perfect or imperfect) do not affect the diversity order if the receiver does not know the channel state information.

Aggarwal, Vaneet; Bhashyam, Srikrishna; Sabharwal, Ashutosh

2008-01-01T23:59:59.000Z

235

An Analytical Model of Atmospheric Feedback and Global Temperature Change  

Science Conference Proceedings (OSTI)

An analytical model of the globally averaged surface temperature response to changes in radiative forcing induced by greenhouse gases is developed from a time-dependent version of the global energy budget. The model clarifies the role of feedback ...

John A. Dutton

1995-05-01T23:59:59.000Z

236

Observed Vegetation–Climate Feedbacks in the United States  

Science Conference Proceedings (OSTI)

Observed vegetation feedbacks on temperature and precipitation are assessed across the United States using satellite-based fraction of photosynthetically active radiation (FPAR) and monthly climate data for the period of 1982–2000. This study ...

M. Notaro; Z. Liu; J. W. Williams

2006-03-01T23:59:59.000Z

237

Feedback Control of Azimuthal Oscillations in ExB Devices --...  

NLE Websites -- All DOE Office Websites (Extended Search)

Feedback Control of Azimuthal Oscillations in ExB Devices --- Inventor(s) Martin E. Griswold, C. Leland Ellison, Yevgeny Raitses and Nathaniel J. Fisch Disclosed is a new device...

238

Effects of Cloud Optical Property Feedbacks on the Greenhouse Warming  

Science Conference Proceedings (OSTI)

Cloud optical properties, in particular the optical thickness, affect the earth-atmosphere radiation budget, and their potential changes associated with climate changes may induce feedback effect. A one-dimensional radiative-forcing model was ...

Gyula Molnar; Wei-Chyung Wang

1992-08-01T23:59:59.000Z

239

Geothermal Stakeholder Feedback on the GRR | OpenEI Community  

Open Energy Info (EERE)

Geothermal Stakeholder Feedback on the GRR Geothermal Stakeholder Feedback on the GRR Home > Groups > Geothermal Regulatory Roadmap Kyoung's picture Submitted by Kyoung(155) Contributor 13 December, 2012 - 10:01 feedback GRR As we head into the holiday season, we thought we'd share with you some of the feedback we've received from industry, agency, consultant and other stakeholder personnel. Thanks again to all, and Happy Holidays! General "GRR is a much needed tool for navigating the geothermal regulatory environment. It will go a long way towards facilitating more geothermal energy development." (agency) "Very impressive product. The workshop [at GRC] was very helpful and thought provoking. Participants very engaged." (industry) "Good, forward-thinking initiative. Highly needed."

240

CRAD, Feedback and Continuous - Contractor - December 4, 2007 | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Feedback and Continuous - Contractor - December 4, 2007 Feedback and Continuous - Contractor - December 4, 2007 CRAD, Feedback and Continuous - Contractor - December 4, 2007 December 4, 2007 Feedback and Continuous Improvement Inspection Criteria and Approach - Contractor (HSS CRAD 64-20) Contractor management has established a comprehensive and integrated contractor assurance system for ensuring the protection of the public, workers, environment and national security assets through continuous improvement for environment, safety, and health; safeguards and security; cyber security; and emergency management. The contractor's assurance system programs and processes are in accordance with the policy and key elements outlined in DOE Policy 226.1, Department of Energy Oversight Policy, DOE Order 226.1 A, Implementation of Department of Energy Oversight Policy,

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


241

Feedback Wanted: Help the Energy Department Go Mobile, Open Data! |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Feedback Wanted: Help the Energy Department Go Mobile, Open Data! Feedback Wanted: Help the Energy Department Go Mobile, Open Data! Feedback Wanted: Help the Energy Department Go Mobile, Open Data! August 13, 2012 - 4:35pm Addthis The Energy Department’s main site, Energy.gov and its contents, are now available on the go. This allows users to access the Energy Departments’ resources over a variety of mobile devices such as smart phones and tablets. The Energy Department's main site, Energy.gov and its contents, are now available on the go. This allows users to access the Energy Departments' resources over a variety of mobile devices such as smart phones and tablets. Alex Cohen Alex Cohen Senior Digital Information Strategist The Energy Department needs your feedback! To support the Federal Digital Strategy, the Department has created mobile

242

Information and Feedback Institutional Change Principle | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Information and Feedback Institutional Change Principle Information and Feedback Institutional Change Principle Information and Feedback Institutional Change Principle October 8, 2013 - 11:07am Addthis Information alone, however, is unlikely to lead to action. Federal and commercial programs have demonstrated reductions in energy use from delivery of reports to customers. By providing actionable information and feedback that are tailored to specific workplace situations, Federal agencies can help to spur and maintain behaviors that save energy and resources. Methods However, for sustainability, providing information to create awareness and engagement may be an important component of an action plan. People often have to contend with information overload. Therefore, recipients need to see the information and resources provided as salient and, ideally, useful

243

The Role of Surface Albedo Feedback in Climate  

Science Conference Proceedings (OSTI)

A coarse resolution coupled ocean–atmosphere simulation in which surface albedo feedback is suppressed by prescribing surface albedo, is compared to one where snow and sea ice anomalies are allowed to affect surface albedo. Canonical CO2-doubling ...

Alex Hall

2004-04-01T23:59:59.000Z

244

The Nonlinear and Nonlocal Nature of Climate Feedbacks  

Science Conference Proceedings (OSTI)

The climate feedback framework partitions the radiative response to climate forcing into contributions from individual atmospheric processes. The goal of this study is to understand the closure of the energy budget in as much detail and precision ...

Nicole Feldl; Gerard H. Roe

2013-11-01T23:59:59.000Z

245

Seasonal Variations of Climate Feedbacks in the NCAR CCSM3  

Science Conference Proceedings (OSTI)

This study investigates the annual cycle of radiative contributions to global climate feedbacks. A partial radiative perturbation (PRP) technique is used to diagnose monthly radiative perturbations at the top of atmosphere (TOA) due to CO2 forcing;...

Patrick C. Taylor; Robert G. Ellingson; Ming Cai

2011-07-01T23:59:59.000Z

246

Stationary Waves on a Sphere: Sensitivity to Thermal Feedback  

Science Conference Proceedings (OSTI)

Thermal forcing feedback is proposed to be an important mechanism in middle and high latitudes in determining the low-frequency variability of the stationary wave structure. The total diabatic heating in the atmosphere is not due solely to the ...

Harry H. Hendon; Dennis L. Hartmann

1982-09-01T23:59:59.000Z

247

Error exponents for decentralized detection in feedback architectures  

E-Print Network (OSTI)

We consider the decentralized Bayesian binary hypothesis testing problem in feedback architectures, in which the fusion center broadcasts information based on the messages of some sensors to some or all sensors in the ...

Tay, Wee Peng

248

Assessing Snow Albedo Feedback in Simulated Climate Change  

Science Conference Proceedings (OSTI)

In this paper, the two factors controlling Northern Hemisphere springtime snow albedo feedback in transient climate change are isolated and quantified based on scenario runs of 17 climate models used in the Intergovernmental Panel on Climate ...

Xin Qu; Alex Hall

2006-06-01T23:59:59.000Z

249

Vegetation Feedbacks to Climate in the Global Monsoon Regions  

Science Conference Proceedings (OSTI)

Vegetation feedbacks on climate, on the subannual time scale, are examined across six monsoon regions with a fully coupled atmosphere–ocean–ice–land model with dynamic vegetation. Initial value ensemble experiments are run in which the total ...

Michael Notaro; Guangshan Chen; Zhengyu Liu

2011-11-01T23:59:59.000Z

250

Second Skin : motion capture with actuated feedback for motor learning  

E-Print Network (OSTI)

Second Skin aims to combine three-dimensional (3D) motion tracking with tactile feedback for the purpose of improving users' motor-learning ability. Such a system would track a user's body and limb movements as he or she ...

Miaw, Dennis (Dennis R.)

2010-01-01T23:59:59.000Z

251

Comparative analysis of aviation safety information feedback systems  

E-Print Network (OSTI)

In the aviation system, there are several feedback systems to prevent an accident. First of all, the accident and serious incident reporting and investigation system is established by the Chicago Convention. In general, ...

Funahashi, Yoshifuru

2010-01-01T23:59:59.000Z

252

Robust MPC with output feedback of integrating systems  

Science Conference Proceedings (OSTI)

In this work, it is presented a new contribution to the design of a robust MPC with output feedback, input constraints, and uncertain model. Multivariable predictive controllers have been used in industry to reduce the variability of the process output ...

J. M. Perez; D. Odloak; E. L. Lima

2012-01-01T23:59:59.000Z

253

Simulation of the ALS Longitudinal Multibunch Feedback System  

E-Print Network (OSTI)

Higher-order Modes of the ALS 500 MHz Accelerating Cavities,in the system. RESULTS The ALS and FB parameters used for33271 Simulation of the ALS Longitudinal Multibunch Feedback

Byrd, J.M.

2011-01-01T23:59:59.000Z

254

Slow Orbit Feedback at the ALS Using Matlab  

E-Print Network (OSTI)

Measurement of Storage Ring Motion at the ALS," PAC [4] G.Portmann, "ALS Storage Ring Setup and Control Using MatlabSlow Orbit Feedback at the ALS Using Matlab G_ Port mann

Portmann, G.

2011-01-01T23:59:59.000Z

255

Climate Change for the Built Environment and Occupant Feedback  

NLE Websites -- All DOE Office Websites (Extended Search)

Climate Change for the Built Environment and Occupant Feedback Speaker(s): Geoff Levermore Date: June 28, 2002 - 12:00pm Location: Bldg. 90 This presentation will describe some of...

256

We Want Your Feedback! Please Take Our Survey | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

truly appreciate all of the regular feedback that you provide us through the blog, Facebook, and e-mails. We want to make Energy Savers a useful resource for you, and the only...

257

The Contribution of Radiative Feedbacks to Orbitally Driven Climate Change  

Science Conference Proceedings (OSTI)

Radiative feedbacks influence Earth's climate response to orbital forcing, amplifying some aspects of the response while damping others. To better understand this relationship, the GFDL Climate Model, version 2.1 (CM2.1), is used to perform ...

Michael P. Erb; Anthony J. Broccoli; Amy C. Clement

2013-08-01T23:59:59.000Z

258

On the Use of Cloud Forcing to Estimate Cloud Feedback  

Science Conference Proceedings (OSTI)

Uncertainty in cloud feedback is the leading cause of discrepancy in model predictions of climate change. The use of observed or model-simulated radiative fluxes to diagnose the effect of clouds on climate sensitivity requires an accurate ...

Brian J. Soden; Anthony J. Broccoli; Richard S. Hemler

2004-10-01T23:59:59.000Z

259

A Formal Analysis of the Feedback Concept in Climate Models, part I: exclusive and inclusive feedback analyses  

Science Conference Proceedings (OSTI)

Climate sensitivity and feedback are key concepts if the complex behavior of climate response to perturbation is to be interpreted in a simple way. They have also become an essential tool for comparing Global Circulation Models and assessing the ...

Alain Lahellec; Jean-Louis Dufresne

260

Gas Feedback on Stellar Bar Evolution  

E-Print Network (OSTI)

We analyze evolution of live disk-halo systems in the presence of various gas fractions, f_gas less than 8% in the disk. We addressed the issue of angular momentum (J) transfer from the gas to the bar and its effect on the bar evolution. We find that the weakening of the bar, reported in the literature, is not related to the J-exchange with the gas, but is caused by the vertical buckling instability in the gas-poor disks and by a steep heating of a stellar velocity dispersion by the central mass concentration (CMC) in the gas-rich disks. The gas has a profound effect on the onset of the buckling -- larger f_gas brings it forth due to the more massive CMCs. The former process leads to the well-known formation of the peanut-shaped bulges, while the latter results in the formation of progressively more elliptical bulges, for larger f_gas. The subsequent (secular) evolution of the bar differs -- the gas-poor models exhibit a growing bar while gas-rich models show a declining bar whose vertical swelling is driven by a secular resonance heating. The border line between the gas-poor and -rich models lies at f_gas ~ 3% in our models, but is model-dependent and will be affected by additional processes, like star formation and feedback from stellar evolution. The overall effect of the gas on the evolution of the bar is not in a direct J transfer to the stars, but in the loss of J by the gas and its influx to the center that increases the CMC. The more massive CMC damps the vertical buckling instability and depopulates orbits responsible for the appearance of peanut-shaped bulges. The action of resonant and non-resonant processes in gas-poor and gas-rich disks leads to a converging evolution in the vertical extent of the bar and its stellar dispersion velocities, and to a diverging evolution in the bulge properties.

Ingo Berentzen; Isaac Shlosman; Inma Martinez-Valpuesta; Clayton Heller

2007-03-01T23:59:59.000Z

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


261

Large Synoptic Survey Telescope: From Science Drivers to Reference Design  

SciTech Connect

In the history of astronomy, major advances in our understanding of the Universe have come from dramatic improvements in our ability to accurately measure astronomical quantities. Aided by rapid progress in information technology, current sky surveys are changing the way we view and study the Universe. Next-generation surveys will maintain this revolutionary progress. We focus here on the most ambitious survey currently planned in the visible band, the Large Synoptic Survey Telescope (LSST). LSST will have unique survey capability in the faint time domain. The LSST design is driven by four main science themes: constraining dark energy and dark matter, taking an inventory of the Solar System, exploring the transient optical sky, and mapping the Milky Way. It will be a large, wide-field ground-based system designed to obtain multiple images covering the sky that is visible from Cerro Pachon in Northern Chile. The current baseline design, with an 8.4 m (6.5 m effective) primary mirror, a 9.6 deg{sup 2} field of view, and a 3,200 Megapixel camera, will allow about 10,000 square degrees of sky to be covered using pairs of 15-second exposures in two photometric bands every three nights on average. The system is designed to yield high image quality, as well as superb astrometric and photometric accuracy. The survey area will include 30,000 deg{sup 2} with {delta} < +34.5{sup o}, and will be imaged multiple times in six bands, ugrizy, covering the wavelength range 320-1050 nm. About 90% of the observing time will be devoted to a deep-wide-fast survey mode which will observe a 20,000 deg{sup 2} region about 1000 times in the six bands during the anticipated 10 years of operation. These data will result in databases including 10 billion galaxies and a similar number of stars, and will serve the majority of science programs. The remaining 10% of the observing time will be allocated to special programs such as Very Deep and Very Fast time domain surveys. We describe how the LSST science drivers led to these choices of system parameters.

Ivezic, Z.; Axelrod, T.; Brandt, W.N.; Burke, D.L.; Claver, C.F.; Connolly, A.; Cook, K.H.; Gee, P.; Gilmore, D.K.; Jacoby, S.H.; Jones, R.L.; Kahn, S.M.; Kantor, J.P.; Krabbendam, V.; Lupton, R.H.; Monet, D.G.; Pinto, P.A.; Saha, A.; Schalk, T.L.; Schneider, D.P.; Strauss, Michael A.; /Washington U., Seattle, Astron. Dept. /LSST Corp. /Penn State U., Astron. Astrophys. /KIPAC, Menlo Park /NOAO, Tucson /LLNL, Livermore /UC, Davis /Princeton U., Astrophys. Sci. Dept. /Naval Observ., Flagstaff /Arizona U., Astron. Dept. - Steward Observ. /UC, Santa Cruz /Harvard U. /Johns Hopkins U. /Illinois U., Urbana

2011-10-14T23:59:59.000Z

262

High Temperature Dynamic Hohlraums on the Pulsed Power Driver Z  

SciTech Connect

In the concept of the dynamic hohlraum an imploding z-pinch is optically thick to its own radiation. Radiation may be trapped inside the pinch to give a radiation temperature inside the pinch greater than that outside the pinch. The radiation is typically produced by colliding an outer Z-pinch liner onto an inner liner. The collision generates a strongly radiating shock, and the radiation is trapped by the outer liner. As the implosion continues after the collision the radiation temperature may continue to increase due to ongoing PdV (pressure times change in volume) work done by the implosion. In principal the radiation temperature may increase to the point at which the outer liner burns through, becomes optically thin, and no longer traps the radiation. One application of the dynamic hohlraum is to drive an ICF (inertial confinement fusion) pellet with the trapped radiation field. Members of the dynamic hohlraum team at Sandia National Labs have used the pulsed power driver Z (20 LMA, 100 ns) to create a dynamic hohlraum with temperature linearly ramping from 100 to 180 eV over 5 ns. On this shot zp214 a nested tungsten wire array of 4 and 2 cm diameters with masses of 2 and 1 mg imploded onto a 2.5 mg plastic annulus at 5 mm diameter. The current return can on this shot was slotted. It is likely the radiation temperature may be increased to over 200 CV by stabilizing the pinch with a solid current return can. A current return can with 9 slots imprints 9 filaments onto the imploding pinch. This degrades the optical trapping and the quality of the liner collision. A 1.6 mm diameter capsule situated inside this dynamic hohlraum of zp214 would see 15 kJ of radiation impinging on its surface before the pinch itself collapses to a 1.6 mm diameter. Dynamic hohlraum shots including pellets are scheduled to take place on Z in September of 1998.

Armijo, J.; Chandler, G.A.; Cooper, G.; Derzon, M.S.; Fehl, D.; Gilliland, T.; Hawn, R.; Hebron, D.; Hurst, M.; Jobe, D.; Lash, J.; Lazier, S.; Leeper, R.; McGurn, J.; McKenney, J.; Mock, R.; Nash, T.J.; Nielsen, D.; Ruiz, C.; Ryan, P.; Seaman, J.F.; Torres, J.

1999-01-04T23:59:59.000Z

263

Rate-optimal multiuser scheduling with reduced feedback load and analysis of delay effects  

Science Conference Proceedings (OSTI)

We propose a feedback algorithm for wireless networks that always collects feedback from the user with the best channel conditions and has a significant reduction in feedback load compared to full feedback. The algorithm is based on a carrier-to-noise ...

Vegard Hassel; Mohamed-Slim Alouini; Geir E. Øien; David Gesbert

2006-04-01T23:59:59.000Z

264

Negative plantsoil feedbacks may limit persistence of an invasive tree due to rapid  

E-Print Network (OSTI)

: biological invasions; Chinese tallow tree; pathogen accumulation; persistence; plant­soil feedbacks 1

Siemann, Evan

265

The collective infrastructural work of electricity: exploring feedback in a prepaid university dorm in China  

Science Conference Proceedings (OSTI)

Feedback on resource consumption is often explored as a way to raise awareness and saving resources. This paper reports findings from a user study of a feedback system deployed in a Chinese university dormitory with a prepaid electricity system, a context ... Keywords: awareness, collective infrastructural work., consumption feedback, electricity, feedback, infrastructural work

Tengfei Liu, Xianghua Ding, Silvia Lindtner, Tun Lu, Ning Gu

2013-09-01T23:59:59.000Z

266

The Geant4 Visualisation System - a multi-driver graphics system  

E-Print Network (OSTI)

From the beginning the Geant4 Visualisation System was designed to support several simultaneous graphics systems written to common abstract interfaces. Today it has matured into a powerful diagnostic and presentational tool. It comes with a library of models that may be added to the current scene and which include the representation of the Geant4 geometry hierarchy, simulated trajectories and user-written hits and digitisations. The workhorse is the OpenGL suite of drivers for X, Xm, Qt and Win32. There is an Open Inventor driver. Scenes can be exported in special graphics formats for offline viewing in the DAWN, VRML, HepRApp and gMocren browsers. PostScript can be generated through OpenGL, Open Inventor, DAWN and HepRApp. Geant4's own tracking algorithms are used by the Ray Tracer. Not all drivers support all features but all drivers bring added functionality of some sort. This paper describes the interfaces and details the individual drivers.

John Allison; Laurent Garnier; Akinori Kimura; Joseph Perl

2012-12-31T23:59:59.000Z

267

BEAM DYNAMICS STUDIES OF A HIGH-REPETITION RATE \\\\ LINAC-DRIVER FOR A 4TH GENERATION LIGHT SOURCE  

E-Print Network (OSTI)

DRIVER FOR A 4TH GENERATION LIGHT SOURCE ? M. Venturini † ,of designing a 4th generation light source in the 0.27 ? 1.2

Ventturini, M.

2013-01-01T23:59:59.000Z

268

Effects of solar UV radiation and climate change on biogeochemical cycling: Interactions and feedbacks  

SciTech Connect

Solar UV radiation, climate and other drivers of global change are undergoing significant changes and models forecast that these changes will continue for the remainder of this century. Here we assess the effects of solar UV radiation on biogeochemical cycles and the interactions of these effects with climate change, including feedbacks on climate. Such interactions occur in both terrestrial and aquatic ecosystems. While there is significant uncertainty in the quantification of these effects, they could accelerate the rate of atmospheric CO{sub 2} increase and subsequent climate change beyond current predictions. The effects of predicted changes in climate and solar UV radiation on carbon cycling in terrestrial and aquatic ecosystems are expected to vary significantly between regions. The balance of positive and negative effects on terrestrial carbon cycling remains uncertain, but the interactions between UV radiation and climate change are likely to contribute to decreasing sink strength in many oceanic regions. Interactions between climate and solar UV radiation will affect cycling of elements other than carbon, and so will influence the concentration of greenhouse and ozone-depleting gases. For example, increases in oxygen-deficient regions of the ocean caused by climate change are projected to enhance the emissions of nitrous oxide, an important greenhouse and ozone-depleting gas. Future changes in UV-induced transformations of aquatic and terrestrial contaminants could have both beneficial and adverse effects. Taken in total, it is clear that the future changes in UV radiation coupled with human-caused global change will have large impacts on biogeochemical cycles at local, regional and global scales.

Erickson III, David J [ORNL

2011-01-01T23:59:59.000Z

269

On Interference Networks with Feedback and Delayed CSI  

E-Print Network (OSTI)

The degrees of freedom (DoF) region of the two-user MIMO interference channel (IC) is completely characterized in the presence of noiseless channel output feedback from each receiver to its respective transmitter and with the assumption of delayed channel state information (CSI) at the transmitters. It is shown that having output feedback and delayed CSI at the transmitters can strictly enlarge the DoF region when compared to the case in which only delayed CSI is available at the transmitters. The proposed coding schemes that achieve the corresponding DoF region with feedback and delayed CSI utilize both resources, i.e., feedback and delayed CSI in a non-trivial manner. Furthermore, cases are identified in which output feedback and delayed CSI alone are sufficient to achieve the DoF region achievable with perfect, instantaneous CSI. Also, the DoF region of the scalar 2x2x2 two-hop interference network is characterized. It is shown that the total DoF for this network collapses from 2 (with perfect, instantaneo...

Tandon, Ravi; Poor, H Vincent; Shamai, Shlomo

2011-01-01T23:59:59.000Z

270

Delayed feedback control of fractional-order chaotic systems  

E-Print Network (OSTI)

We study the possibility to stabilize unstable steady states and unstable periodic orbits in chaotic fractional-order dynamical systems by the time-delayed feedback method. By performing a linear stability analysis, we establish the parameter ranges for successful stabilization of unstable equilibria in the plane parametrizad by the feedback gain and the time delay. An insight into the control mechanism is gained by analyzing the characteristic equation of the controlled system, showing that the control scheme fails to control unstable equilibria having an odd number of positive real eigenvalues. We demonstrate that the method can also stabilize unstable periodic orbits for a suitable choice of the feedback gain, providing that the time delay is chosen to coincide with the period of the target orbit. In addition, it is shown numerically that delayed feedback control with a sinusoidally modulated time delay significantly enlarges the stability region of the steady states in comparison to the classical time-delayed feedback scheme with a constant delay.

Aleksandar Gjurchinovski; Trifce Sandev; Viktor Urumov

2010-05-17T23:59:59.000Z

271

Grid Parity for Residential Photovoltaics in the United States: Key Drivers and Sensitivities; Preprint  

DOE Green Energy (OSTI)

In this report, we analyze PV break-even costs for U.S. residential customers. We evaluate some key drivers of grid parity both regionally and over time. We also examine the impact of moving from flat to time-of-use (TOU) rates, and we evaluate individual components of the break-even cost, including effect of rate structure and various incentives. Finally, we examine how PV markets might evolve on a regional basis considering the sensitivity of the break-even cost to four major drivers: technical performance, financing parameters, electricity prices and rates, and policies. We find that electricity price rather than technical parameters are in general the key drivers of the break-even cost of PV. Additionally, this analysis provides insight about the potential viability of PV markets.

Ong, S.; Denholm, P.; Clark, N.

2012-08-01T23:59:59.000Z

272

Experimental comparison of the active well coincidence counter with the random driver  

SciTech Connect

A direct comparison has been made between the IAEA Active Well Coincidence Counter (AWCC) and the CMB-8 Random Driver. The comparison included an experimental evaluation of precision, counting rate, accuracy, penetrability, stability, and the effect of sample inhomogeneity. Samples used in the evaluation included highly enriched U/sub 3/O/sub 8/, U/sub 3/O/sub 8/ mixed withe qgraphite, highly enriched uranium metal discs, and depleted uranium metal. These materials are typical of the samples of interest to the IAEA inspectors. It was concluded that the two instruments had very similar performance characteristics with the Random Driver giving better penetrability and the AWCC giving better stability.

Menlove, H.O.; Ensslin, N.; Sampson, T.E.

1979-06-01T23:59:59.000Z

273

MIMO ARQ with Multi-bit Feedback: Outage Analysis  

E-Print Network (OSTI)

We study the asymptotic outage performance of incremental redundancy automatic repeat request (INR-ARQ) transmission over the multiple-input multiple-output (MIMO) block-fading channels with discrete input constellations. We first show that transmission with random codes using a discrete signal constellation across all transmit antennas achieves the optimal outage diversity given by the Singleton bound. We then analyze the optimal SNR-exponent and outage diversity of INR-ARQ transmission over the MIMO block-fading channel. We show that a significant gain in outage diversity is obtained by providing more than one bit feedback at each ARQ round. Thus, the outage performance of INR-ARQ transmission can be remarkably improved with minimal additional overhead. A suboptimal feedback and power adaptation rule, which achieves the optimal outage diversity, is proposed for MIMO INR-ARQ, demonstrating the benefits provided by multi-bit feedback.

Nguyen, Khoa D; Fabregas, Albert Guillen i; Letzepis, Nick

2010-01-01T23:59:59.000Z

274

Numerical simulation of optical feedback on a quantum dot lasers  

Science Conference Proceedings (OSTI)

We use multi-population rate equations model to study feedback oscillations in the quantum dot laser. This model takes into account all peculiar characteristics in the quantum dots such as inhomogeneous broadening of the gain spectrum, the presence of the excited states on the quantum dot and the non-confined states due to the presence of wetting layer and the barrier. The contribution of quantum dot groups, which cannot follow by other models, is simulated. The results obtained from this model show the feedback oscillations, the periodic oscillations which evolves to chaos at higher injection current of higher feedback levels. The frequency fluctuation is attributed mainly to wetting layer with a considerable contribution from excited states. The simulation shows that is must be not using simple rate equation models to express quantum dots working at excited state transition.

Al-Khursan, Amin H., E-mail: ameen_2all@yahoo.com [Thi-Qar University, Nassiriya Nanotechnology Research Laboratory (NNRL), Science College (Iraq); Ghalib, Basim Abdullattif [Babylon University, Laser Physics Department, Science College for Women (Iraq); Al-Obaidi, Sabri J. [Al-Mustansiriyah University, Physics Department, Science College (Iraq)

2012-02-15T23:59:59.000Z

275

Decoherence control: A feedback mechanism based on hamiltonian tracking  

E-Print Network (OSTI)

Enviroment - caused dissipation disrupts the hamiltonian evolution of all quantum systems not fully isolated from any bath. We propose and examine a feedback-control scheme to eliminate such dissipation, by tracking the free hamiltonian evolution. We determine a driving-field that maximizes the projection of the actual molecular system onto the freely propagated one. The evolution of a model two level system in a dephasing bath is followed, and the driving field that overcomes the decoherence is calculated. An implementation of the scheme in the laboratory using feedback control is suggested.

Gil Katz; Mark Ratner; Ronnie Kosloff

2006-03-02T23:59:59.000Z

276

Adaptive discrete cosine transform for feedback active noise control  

Science Conference Proceedings (OSTI)

The theory and performance of adaptive discrete cosine transform filters for feedback active noise control (ANC) is examined. The discrete cosine transform filter is a realization of an FIR filter as the cascade of an all-zero FIR filter with a bank ... Keywords: FIR filter, IIR digital resonators bank, active noise control, adaptive discrete cosine transform filters, adaptive filter, all-zero FIR filter, discrete cosine transform filter, feedback active noise control, filter-X LMS implementation, frequency, magnitude coefficient, phase coefficient, single error microphone, single loudspeaker, transfer function

G. Coutu; M. Dignan

1995-10-01T23:59:59.000Z

277

Optimal sequential transmission over broadcast channel with nested feedback  

E-Print Network (OSTI)

We consider the optimal design of sequential transmission over broadcast channel with nested feedback. Nested feedback means that the channel output of the outer channel is also available at the decoder of the inner channel. We model the communication system as a decentralized team with three decision makers---the encoder and the two decoders. Structure of encoding and decoding strategies that minimize a total distortion measure over a finite horizon are determined. The results are applicable for real-time communication as well as for the information theoretic setup.

Mahajan, Aditya

2010-01-01T23:59:59.000Z

278

Power-Controlled Feedback and Training for Two-way MIMO Channels  

E-Print Network (OSTI)

Most communication systems use some form of feedback, often related to channel state information. The common models used in analyses either assume perfect channel state information at the receiver and/or noiseless state feedback links. However, in practical systems, neither is the channel estimate known perfectly at the receiver and nor is the feedback link perfect. In this paper, we study the diversity multiplexing tradeoff considering the errors in training the receiver and the errors in the feedback link for FDD systems, where the forward and the feedback are independent MIMO channels. Our key result is that diversity-multiplexing performance with one-bit of feedback information is identical to systems with more feedback bits. Thus, asymptotically in SNR, more than one bit of feedback does not improve the system performance. Furthermore, the one-bit performance is identical to the system which has perfect channel state information at the receiver along with noiseless feedback link. This achievability uses ...

Aggarwal, Vaneet

2009-01-01T23:59:59.000Z

279

Abstract--There are two types of drivers in production machine systems: constant velocity (CV) motor and servo-motor.  

E-Print Network (OSTI)

) motor and servo-motor. If a system contains two drivers or more, among which some are of the CV motor while the other are the servo-motor, the system has the so-called hybrid driver architecture is stable. A simulation is performed to show verify the proposed controller. The CV motor has the velocity

Zhang, WJ "Chris"

280

Web-Based Forest Sector Communities as Drivers for Economic Development  

E-Print Network (OSTI)

1 Web-Based Forest Sector Communities as Drivers for Economic Development Richard Vlosky MeetingForest Products Society Annual Meeting--June, 2005June, 2005 Outline · Overview of webCommon ties Social interactionSocial interaction What are Web-based Communities? Social network that uses

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


281

Holifield!Radioactive!Ion!Beam!Facility! Cyclotron!Driver!White!Paper!  

E-Print Network (OSTI)

Holifield!Radioactive!Ion!Beam!Facility! Cyclotron!Driver!White!Paper! ! ! ! ! prepared and design work has progressed. One of the original purposes of the White Paper was a comparison-writing the document now, most of these references would not be relevant. #12;2 1.0 Introduction! ! This!white!paper

282

Inrush related problems caused by lamps with electronic drivers and their mitigation  

Science Conference Proceedings (OSTI)

New types of appliances sometimes bring unexpected power quality problems. On several locations it was reported that energy-saving lamps cause random false tripping of circuit breakers. In all of these cases these lamps had electronic drivers. An investigation ... Keywords: energy-saving lamp, false tripping, inrush, mitigation, power quality

Vladimir ?uk; Joseph F. G. Cobben; Wil L. Kling

2011-07-01T23:59:59.000Z

283

Harold Black and the Negative-Feedback Amplifier  

E-Print Network (OSTI)

Harold Black and the Negative-Feedback Amplifier n August 2, 1927,Harold 0Black, a young Bell Labs- cated on West Street in Man- hattan.) Black recalled, "I felt an urge to write but had noth- ing of the newspaper pages used by Black tojot down his early ideas on feedbad (Photo:AT&T Archives) The author

Oriolo, Giuseppe

284

Query clustering using content words and user feedback  

Science Conference Proceedings (OSTI)

Query clustering is crucial for automatically discovering frequently asked queries (FAQs) or most popular topics on a question-answering search engine. Due to the short length of queries, the traditional approaches based on keywords are not suitable ... Keywords: log mining, query clustering, user feedback, web search

Ji-Rong Wen; Jian-Yun Nie; Hong-Jiang Zhang

2001-09-01T23:59:59.000Z

285

Generalizing from relevance feedback using named entity wildcards  

Science Conference Proceedings (OSTI)

Traditional adaptive filtering systems learn the user's interests in a rather simple way - words from relevant documents are favored in the query model, while words from irrelevant documents are down-weighted. This biases the query model towards specific ... Keywords: adaptive filtering, named entities, relevance feedback

Abhimanyu Lad; Yiming Yang

2007-11-01T23:59:59.000Z

286

Frontal oscillatory dynamics predict feedback learning and action adjustment  

Science Conference Proceedings (OSTI)

Frontal oscillatory dynamics in the theta (4-8 Hz) and beta (20-30 Hz) frequency bands have been implicated in cognitive control processes. Here we investigated the changes in coordinated activity within and between frontal brain areas during feedback-based ...

Irene van de Vijver; K. Richard Ridderinkhof; Michael X. Cohen

2011-12-01T23:59:59.000Z

287

Multilingual pseudo-relevance feedback: performance study of assisting languages  

Science Conference Proceedings (OSTI)

In a previous work of ours Chinnakotla et al. (2010) we introduced a novel framework for Pseudo-Relevance Feedback (PRF) called MultiPRF. Given a query in one language called Source, we used English as the Assisting Language to improve ...

Manoj K. Chinnakotla; Karthik Raman; Pushpak Bhattacharyya

2010-07-01T23:59:59.000Z

288

Feedback damper system for quadrupole oscillations after transition at RHIC.  

Science Conference Proceedings (OSTI)

The heavy ion beam at RHIC undergoes strong quadrupole oscillations just after it crosses transition, which leads to an increase in bunch length making rebucketing less effective. A feedback system was built to damp these quadrupole oscillations and in this paper the characteristics of the system and the results obtained are presented and discussed.

Abreu,N.; Blaskiewicz, M.; Brennan, J.M.; Schultheiss, C.

2008-06-23T23:59:59.000Z

289

Interactive Feedback between ENSO and the Indian Ocean  

Science Conference Proceedings (OSTI)

A feedback process of the Indian Ocean SST on ENSO is investigated by using observed data and atmospheric GCM. It is suggested that warming in the Indian Ocean produces an easterly wind stress anomaly over Indonesia and the western edge of the ...

Jong-Seong Kug; In-Sik Kang

2006-05-01T23:59:59.000Z

290

Spider hero: a VR application using pulling force feedback system  

Science Conference Proceedings (OSTI)

The super hero has overwhelming speed and power. Especially, the greatest characteristic is his special ability. In our VR application, the user can jump from one building to another by using a web and being stuck to it like Spiderman™, the famous ... Keywords: entertainment, force feedback, interaction, virtual reality

Ken Ishibashi; Toni Da Luz; Remy Eynard; Naoki Kita; Nan Jiang; Hiroshi Segi; Keisuke Terada; Kyohei Fujita; Kazunori Miyata

2009-12-01T23:59:59.000Z

291

Climate Feedbacks in Response to Changes in Obliquity  

Science Conference Proceedings (OSTI)

The feedbacks involved in the response of climate to a reduction of Earth’s obliquity are investigated in the GFDL Climate Model version 2.1 (CM2.1). A reduction in obliquity increases the meridional gradient of the annual mean insolation, causing ...

Damianos F. Mantsis; Amy C. Clement; Anthony J. Broccoli; Michael P. Erb

2011-06-01T23:59:59.000Z

292

Feedback fuzzy-DVS scheduling of control tasks  

Science Conference Proceedings (OSTI)

To consider the energy-aware scheduling problem in computer-controlled systems is necessary to improve the control performance, to use the limited computing resource sufficiently, and to reduce the energy consumption to extend the lifetime of the whole ... Keywords: Control task, Dynamic voltage scaling, Feedback control, Fuzzy rule, Scheduling

Hong Jin; Danli Wang; Hongan Wang; Hui Wang

2007-08-01T23:59:59.000Z

293

Evaluating advanced LMR (liquid metal reactor) reactivity feedbacks using SSC  

Science Conference Proceedings (OSTI)

Analyses of the PRISM and SAFR Liquid Metal Reactors with SSC are discussed from a safety and licensing perspective. The PRISM and SAFR reactors with metal fuel are designed for inherent shutdown responses to loss-of-flow and loss-of-heat-sink events. The demonstration of this technology was performed by EBR-II during experiments in April 1986 by ANL (Planchon, et al.). Response to postulated TOPs (control rod withdrawal) are made acceptable largely by reducing reactivity swings, and therefore minimizing the size of possible ractivity insertions. Analyses by DOE and the contractors GE, RI, and ANL take credit for several reactivity feedback mechanisms during transient calculations. These feedbacks include Doppler, sodium density, and thermal expansion of the grid plates, the load pads, the fuel (axial) and the control rod which are now factored into the BNL SSC analyses. The bowing feedback mechanism is not presently modeled in the SSC due to its complexity and subsequent large uncertainty. The analysis is conservative by not taking credit for this negative feedback mechanism. Comparisons of BNL predictions with DOE contractors are provided.

Slovik, G.C.; Van Tuyle, G.J.; Kennett, R.J.; Cheng, H.S.

1988-01-01T23:59:59.000Z

294

Feedback based adaptive compensation of control system sensor uncertainties  

Science Conference Proceedings (OSTI)

In this paper, the problem of adaptively compensating sensor uncertainties is addressed in a feedback based framework. In this study, sensor characteristics are modeled as parametrizable uncertain functions and a compensator is constructed to adaptively ... Keywords: Adaptive control, Adaptive systems, Sensor and data fusion, Tracking and adaptation

Shanshan Li; Gang Tao

2009-02-01T23:59:59.000Z

295

Ultra Fast Outflows: Galaxy-Scale Active Galactic Nucleus Feedback  

E-Print Network (OSTI)

We show, using global 3D grid-based hydrodynamical simulations, that Ultra Fast Outflows (UFOs) from Active Galactic Nuclei (AGN) result in considerable feedback of energy and momentum into the interstellar medium (ISM) of the host galaxy. The AGN wind interacts strongly with the inhomogeneous, two-phase ISM consisting of dense clouds embedded in a tenuous hot hydrostatic medium. The outflow floods through the inter-cloud channels, sweeps up the hot ISM, and ablates and disperses the dense clouds. The momentum of the UFO is primarily transferred to the dense clouds via the ram pressure in the channel flow, and the wind-blown bubble evolves in the energy-driven regime. Any dependence on UFO opening angle disappears after the first interaction with obstructing clouds. On kpc scales, therefore, feedback by UFOs operates similarly to feedback by relativistic AGN jets. Negative feedback is significantly stronger if clouds are distributed spherically, rather than in a disc. In the latter case the turbulent backflow...

Wagner, A Y; Bicknell, G V

2012-01-01T23:59:59.000Z

296

Quantum information and stabilization of quantum states by feedback control  

E-Print Network (OSTI)

Quantum information and stabilization of quantum states by feedback control Hans Maassen September) Karol Zyczkowski (Krakow) #12;Overview #12;Overview 1. Finite quantum systems #12;Overview 1. Finite quantum systems 2. Flow diagrams #12;Overview 1. Finite quantum systems 2. Flow diagrams 3. What

Maassen, Hans

297

Multiclass classification with bandit feedback using adaptive regularization  

Science Conference Proceedings (OSTI)

We present a new multiclass algorithm in the bandit framework, where after making a prediction, the learning algorithm receives only partial feedback, i.e., a single bit indicating whether the predicted label is correct or not, rather than the true label. ... Keywords: Online learning, Regret, Upper confidence bound

Koby Crammer; Claudio Gentile

2013-03-01T23:59:59.000Z

298

Advanced beam-dynamics simulation tools for the RIA driver linac,Part I: Low energy beam transport and radiofrequency quadrupole  

Science Conference Proceedings (OSTI)

Advanced Beam-Dynamics Simulation Tools for the RIA Driver Linac; Low Energy Beam Transport and Radiofrequency Quadrupole.

Wangler, Thomas P.; Crandall, Kenneth R.; Garnett, Robert W.; Gorelov, Dmitry; Ostroumov, Petr; Qiang, Ji; Ryne, Robert; York, Richard

2003-08-26T23:59:59.000Z

299

Geographic Aspects of Temperature and Concentration Feedbacks in the Carbon Budget  

Science Conference Proceedings (OSTI)

The geographical distribution of feedback processes in the carbon budget is investigated in a manner that parallels that for climate feedback/sensitivity in the energy budget. Simulations for a range of emission scenarios, made with the Canadian ...

G. J. Boer; V. Arora

2010-02-01T23:59:59.000Z

300

Using the Radiative Kernel Technique to Calculate Climate Feedbacks in NCAR’s Community Atmospheric Model  

Science Conference Proceedings (OSTI)

Climate models differ in their responses to imposed forcings, such as increased greenhouse gas concentrations, due to different climate feedback strengths. Feedbacks in NCAR’s Community Atmospheric Model (CAM) are separated into two components: ...

Karen M. Shell; Jeffrey T. Kiehl; Christine A. Shields

2008-05-01T23:59:59.000Z

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


301

Atmosphere Feedbacks during ENSO in a Coupled GCM with a Modified Atmospheric Convection Scheme  

Science Conference Proceedings (OSTI)

The too diverse representation of ENSO in a coupled GCM limits one’s ability to describe future change of its properties. Several studies pointed to the key role of atmosphere feedbacks in contributing to this diversity. These feedbacks are ...

Eric Guilyardi; Pascale Braconnot; Fei-Fei Jin; Seon Tae Kim; Michel Kolasinski; Tim Li; Ionela Musat

2009-11-01T23:59:59.000Z

302

The Evolution of Climate Sensitivity and Climate Feedbacks in the Community Atmosphere Model  

Science Conference Proceedings (OSTI)

The major evolution of the National Center for Atmospheric Research Community Atmosphere Model (CAM) is used to diagnose climate feedbacks, understand how climate feedbacks change with different physical parameterizations, and identify the ...

A. Gettelman; J. E. Kay; K. M. Shell

2012-03-01T23:59:59.000Z

303

Feedback loop design and experimental testing for integrated optics with micro-mechanical tuning  

E-Print Network (OSTI)

I designed a capacitive sensor with feedback control for precision tuning of a MEMS controlled wavelength-selective switch. The implementation is based upon a customized feedback loop with a PID controller. The positional ...

Waller, Laura A. (Laura Ann)

2005-01-01T23:59:59.000Z

304

How Well Do We Understand and Evaluate Climate Change Feedback Processes?  

Science Conference Proceedings (OSTI)

Processes in the climate system that can either amplify or dampen the climate response to an external perturbation are referred to as climate feedbacks. Climate sensitivity estimates depend critically on radiative feedbacks associated with water ...

Sandrine Bony; Robert Colman; Vladimir M. Kattsov; Richard P. Allan; Christopher S. Bretherton; Jean-Louis Dufresne; Alex Hall; Stephane Hallegatte; Marika M. Holland; William Ingram; David A. Randall; Brian J. Soden; George Tselioudis; Mark J. Webb

2006-08-01T23:59:59.000Z

305

On feedback and the classical capacity of a noisy quantum channel  

Science Conference Proceedings (OSTI)

In Shannon information theory, the capacity of a memoryless communication channel cannot be increased by the use of feedback from receiver to sender. In this correspondence, the use of classical feedback is shown to provide no increase in the unassisted ...

G. Bowen; R. Nagarajan

2005-01-01T23:59:59.000Z

306

Climate Feedbacks and Their Implications for Poleward Energy Flux Changes in a Warming Climate  

Science Conference Proceedings (OSTI)

Feedbacks determine the efficiency with which the climate system comes back into equilibrium in response to a radiative perturbation. Although feedbacks are integrated quantities, the processes from which they arise have rich spatial structures ...

Mark D. Zelinka; Dennis L. Hartmann

2012-01-01T23:59:59.000Z

307

A Simple Gradient Sign Algorithm for Transmit Antenna Weight Adaptation with Feedback  

E-Print Network (OSTI)

frequency division duplexing (FDD), such that the downlinkmust be used, which in FDD systems requires feedback from

Banister, B C; Zeidler, J R

2003-01-01T23:59:59.000Z

308

System support for exploration and expert feedback in resolving conflicts during integration of metadata  

Science Conference Proceedings (OSTI)

A critical reality in integration is that knowledge obtained from different sources may often be conflicting. Conflict-resolution, whether performed during the design phase or during run-time, can be costly and, if done without a proper understanding ... Keywords: Exploration of alternatives, Feedback-based conflict-resolution, Metadata integration, System feedback, Taxonomy, User feedback

K. Selçuk Candan; Huiping Cao; Yan Qi; Maria Luisa Sapino

2008-11-01T23:59:59.000Z

309

Outer bounds for multiple-access channels with feedback using dependence balance  

Science Conference Proceedings (OSTI)

We use the idea of dependence balance to obtain a new outer bound for the capacity region of the discrete memoryless multiple-access channel with noiseless feedback (MAC-FB). We consider a binary additive noisy MAC-FB whose feedback capacity is not known. ... Keywords: cut-set bound, dependence balance, multiple-access channel with feedback (MAC-FB)

Ravi Tandon; Sennur Ulukus

2009-10-01T23:59:59.000Z

310

Tailoring feedback to users' actions in a persuasive game for household electricity conservation  

Science Conference Proceedings (OSTI)

Recent work has begun to focus on the use of games as a platform for energy awareness and eco-feedback research. While technical advancements (wireless sensors, fingerprinting) make timely and tailored feedback an objective within easy reach, we argue ... Keywords: adaptive, context aware, design, energy awareness, feedback, persuasive technology, smart advice, sustainability

Luciano Gamberini; Anna Spagnolli; Nicola Corradi; Giulio Jacucci; Giovanni Tusa; Topi Mikkola; Luca Zamboni; Eve Hoggan

2012-06-01T23:59:59.000Z

311

Non-Contact Haptic Feedback Using Air Vortex Rings Sidhant Gupta1,2  

E-Print Network (OSTI)

regions of the human body. Author Keywords Non-contact haptic feedback; air vortex rings ACM1 AirWave: Non-Contact Haptic Feedback Using Air Vortex Rings Sidhant Gupta1,2 , Dan Morris1 feedback into such interaction. In this work, we explore the use of air vortex rings for this purpose

Rajamani, Sriram K.

312

UltraHaptics: Multi-Point Mid-Air Haptic Feedback for Touch Tom Carter1  

E-Print Network (OSTI)

UltraHaptics: Multi-Point Mid-Air Haptic Feedback for Touch Surfaces Tom Carter1 , Sue Ann Seah1 that the system is capable of creating multiple localised points of feedback in mid-air. Through psychophysicalHaptics provides. Author Keywords Haptic feedback; touch screens; interactive tabletops. ACM Classification

Subramanian, Sriram

313

Cold Feedback in Cooling-Flow Galaxy Clusters  

E-Print Network (OSTI)

We put forward an alternative view to the Bondi-driven feedback between heating and cooling of the intra-cluster medium (ICM) in cooling flow galaxies and clusters. We adopt the popular view that the heating is due to an active galactic nucleus (AGN), i.e. a central black hole accreting mass and launching jets and/or winds. We propose that the feedback occurs with the entire cool inner region (5-30 kpc). A moderate cooling flow does exist here, and non-linear over-dense blobs of gas cool fast and are removed from the ICM before experiencing the next major AGN heating event. Some of these blobs may not accrete on the central black hole, but may form stars and cold molecular clouds. We discuss the conditions under which the dense blobs may cool to low temperatures and feed the black hole.

Fabio Pizzolato

2006-11-07T23:59:59.000Z

314

Cold Feedback in Cooling–Flow Galaxy Clusters  

E-Print Network (OSTI)

Summary. We put forward an alternative view to the Bondi–driven feedback between heating and cooling of the intra-cluster medium (ICM) in cooling flow (CF) galaxies and clusters. We adopt the popular view that the heating is due to an active galactic nucleus (AGN), i.e. a central black hole accreting mass and launching jets and/or winds. We propose that the feedback occurs with the entire cool inner region (r ? 5?30 kpc). A moderate cooling flow does exist here, and non–linear over–dense blobs of gas cool fast and are removed from the ICM before experiencing the next major AGN heating event. Some of these blobs may not accrete on the central black hole, but may form stars and cold molecular clouds. We discuss the conditions under which the dense blobs may cool to low temperatures and feed the black hole. 1

Fabio Pizzolato

2006-01-01T23:59:59.000Z

315

Cold Feedback in Cooling-Flow Galaxy Clusters  

E-Print Network (OSTI)

We put forward an alternative view to the Bondi-driven feedback between heating and cooling of the intra-cluster medium (ICM) in cooling flow galaxies and clusters. We adopt the popular view that the heating is due to an active galactic nucleus (AGN), i.e. a central black hole accreting mass and launching jets and/or winds. We propose that the feedback occurs with the entire cool inner region (5-30 kpc). A moderate cooling flow does exist here, and non-linear over-dense blobs of gas cool fast and are removed from the ICM before experiencing the next major AGN heating event. Some of these blobs may not accrete on the central black hole, but may form stars and cold molecular clouds. We discuss the conditions under which the dense blobs may cool to low temperatures and feed the black hole.

Pizzolato, F

2006-01-01T23:59:59.000Z

316

Enhanced Energy-Aware Feedback Scheduling of Embedded Control Systems  

E-Print Network (OSTI)

Dynamic voltage scaling (DVS) is one of the most effective techniques for reducing energy consumption in embedded and real-time systems. However, traditional DVS algorithms have inherent limitations on their capability in energy saving since they rarely take into account the actual application requirements and often exploit fixed timing constraints of real-time tasks. Taking advantage of application adaptation, an enhanced energy-aware feedback scheduling (EEAFS) scheme is proposed, which integrates feedback scheduling with DVS. To achieve further reduction in energy consumption over pure DVS while not jeopardizing the quality of control, the sampling period of each control loop is adapted to its actual control performance, thus exploring flexible timing constraints on control tasks. Extensive simulation results are given to demonstrate the effectiveness of EEAFS under different scenarios. Compared with the optimal pure DVS scheme, EEAFS saves much more energy while yielding comparable control performance.

Xia, Feng; Zhao, Wenhong; Sun, Youxian; Dong, Jinxiang

2008-01-01T23:59:59.000Z

317

Feedback-Optimized Operations with Linear Ion Crystals  

E-Print Network (OSTI)

We report on transport operations with linear crystals of 40Ca+ ions by applying complex electric time-dependent potentials. For their control we use the information obtained from the ions' fluorescence. We demonstrate that by means of this feedback technique, we can transport a predefined number of ions and also split and unify ion crystals. The feedback control allows for a robust scheme, compensating for experimental errors as it does not rely on a precisely known electrical modeling of the electric potentials in the ion trap beforehand. Our method allows us to generate a self-learning voltage ramp for the required process. With an experimental demonstration of a transport with more than 99.8 % success probability, this technique may facilitate the operation of a future ion based quantum processor.

Eble, J F; Zahariev, P; Schmidt-Kaler, F; Singer, K

2009-01-01T23:59:59.000Z

318

Feedback-Optimized Operations with Linear Ion Crystals  

E-Print Network (OSTI)

We report on transport operations with linear crystals of 40Ca+ ions by applying complex electric time-dependent potentials. For their control we use the information obtained from the ions' fluorescence. We demonstrate that by means of this feedback technique, we can transport a predefined number of ions and also split and unify ion crystals. The feedback control allows for a robust scheme, compensating for experimental errors as it does not rely on a precisely known electrical modeling of the electric potentials in the ion trap beforehand. Our method allows us to generate a self-learning voltage ramp for the required process. With an experimental demonstration of a transport with more than 99.8 % success probability, this technique may facilitate the operation of a future ion based quantum processor.

J. F. Eble; S. Ulm; P. Zahariev; F. Schmidt-Kaler; K. Singer

2009-12-13T23:59:59.000Z

319

The Circadian Rhythm, A Continuous Transcription-Translation Feedback Loop,  

NLE Websites -- All DOE Office Websites (Extended Search)

Circadian Rhythm, A Continuous Transcription-Translation Feedback Loop, Circadian Rhythm, A Continuous Transcription-Translation Feedback Loop, Contributes to Low-Dose Radiation-Induced Radioadaptive Response Aris Alexandrou University of California Davis Abstract The initiation of the circadian rhythm field occurred when the Takahashi group defined a mutation in the mouse gene “Clock” and cloned the circadian locomotor output cycles kaput (Clock) in the mid-1990’s (1-3). Currently more than a dozen clock genes have been identified (3-4). Disruptions in the circadian rhythm via changes in environmental conditions, such as, diet, temperature, and night/day hours lead to the pathogenesis of a multitude of diseases, such as, cancer, diabetes mellitus, neurological diseases, and sleep disorders. A disruption in the

320

Feedback stabilization system for pulsed single-frequency tunable lasers  

DOE Patents (OSTI)

A feedback stabilization system for pulse single-frequency tunable lasers having an excited laser medium contained within an adjustable length cavity and producing a laser beam through the use of an optical element, including detection of angular deviation in the output laser beam, and generating an error signal based thereon. The error signal can be integrated and amplified and then applied as a correcting signal to a piezoelectric transducer mounted on a mirror of the laser cavity for controlling the cavity length.

Esherick, P.; Raymond, T.D.

1989-04-20T23:59:59.000Z

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


321

Simulations of cosmic ray feedback by AGN in galaxy clusters  

E-Print Network (OSTI)

We investigate a numerical model for AGN feedback where for the first time a relativistic particle population in AGN-inflated bubbles is followed within a full cosmological context. In our high-resolution simulations of galaxy cluster formation, we assume that BH accretion is accompanied by energy feedback that occurs in two different modes, depending on the accretion rate itself. Unlike in previous work, we inject a non-thermal particle population of relativistic protons into the AGN bubbles, instead of adopting a purely thermal heating. We then follow the subsequent evolution of the cosmic ray (CR) plasma inside the bubbles, considering both its hydrodynamical interactions and dissipation processes relevant for the CR population. Due to the different buoyancy of relativistic plasma and the comparatively long CR dissipation timescale we find substantial changes in the evolution of clusters as a result of CR feedback. In particular, the non-thermal population can provide significant pressure support in central cluster regions at low thermal temperatures, providing a natural explanation for the decreasing temperature profiles found in cool core clusters. At the same time, the morphologies of the bubbles and of the induced X-ray cavities show a striking similarity to observational findings. AGN feedback with CRs also proves efficient in regulating cluster cooling flows so that the total baryon fraction in stars becomes limited to realistic values of the order of 10%. We find that the partial CR support of the intracluster gas also affects the expected signal of the thermal Sunyaev-Zel'dovich effect, with typical modifications of the integrated Compton-y parameter within the virial radius of the order of 10%. [Abridged

D. Sijacki; C. Pfrommer; V. Springel; T. A. Ensslin

2008-01-21T23:59:59.000Z

322

Single electron beam rf feedback free electron laser  

DOE Patents (OSTI)

A free electron laser system and electron beam system for a free electron laser which uses rf feedback to enhance efficiency are described. Rf energy is extracted from a single electron beam by decelerating cavities and energy is returned to accelerating cavities using rf returns, such as rf waveguides, rf feedthroughs, resonant feedthroughs, etc. This rf energy is added to rf klystron energy to reduce the required input energy and thereby enhance energy efficiency of the system.

Brau, C.A.; Stein, W.E.; Rockwood, S.D.

1981-02-11T23:59:59.000Z

323

Residential Electricity Use Feedback: A Research Synthesis and Economic Framework  

Science Conference Proceedings (OSTI)

This report provides a synthesis of research relating to household electricity consumption feedback, both past and ongoing. The key findings of past summary studies are presented, and the areas that require further research are examined in detail. The report also proposes an economic framework that can provide the basis for further empirical research to comprehensively address various outstanding research gaps. Going forward, a research collaboration proposal is outlined that will allow for the character...

2009-02-27T23:59:59.000Z

324

Feedback-Controlled LED Photobioreactor for Photophysiological Studies of Cyanobacteria  

SciTech Connect

A custom photobioreactor (PBR) was designed to enable automatic light adjustments using computerized feedback control. A black anodized aluminum enclosure, constructed to surround the borosilicate reactor vessel, prevents the transmission of ambient light and serves as a mount for arrays of light-emitting diodes (LEDs). The high-output LEDs provide narrow-band light of either 630 or 680 nm for preferential excitation of the cyanobacterial light-harvesting pigments, phycobilin or chlorophyll a, respectively. Custom developed software BioLume provides automatic control of optical properties and a computer feedback loop can automatically adjust the incident irradiance as necessary to maintain a fixed transmitted light through the culture, based on user-determined set points. This feedback control serves to compensate for culture dynamics which have optical effects, (e.g., changing cell density, pigment adaptations) and thus can determine the appropriate light conditions for physiological comparisons or to cultivate light-sensitive strains, without prior analyses. The LED PBR may also be controlled as a turbidostat, using a feedback loop to continuously adjust the rate of media-dilution based on the transmitted light measurements, with a fast and precise response. This cultivation system gains further merit as a high-performance analytical device, using non-invasive tools (e.g., dissolved gas sensors, online mass spectrometry) to automate real-time measurements, thus permitting unsupervised experiments to search for optimal growth conditions, to monitor physiological responses to perturbations, as well as to quantitate photophysiological parameters using an in situ light-saturation response routine.

Melnicki, Matthew R.; Pinchuk, Grigoriy E.; Hill, Eric A.; Kucek, Leo A.; Stolyar, Sergey; Fredrickson, Jim K.; Konopka, Allan; Beliaev, Alex S.

2013-04-09T23:59:59.000Z

325

Experimental comparison of the active well coincidence counter with the random driver  

SciTech Connect

A direct comparison has been made between the IAEA Active Well Coincidence Counter (AWCC) and the LASL Random Driver at CMB-8. The comparison included an experimental evaluation of precision, counting rate, accuracy, penetrability, stability, and the effect of sample inhomogeneity. Samples used in the evaluation included highly enriched U/sub 3/O/sub 8/, U/sub 3/O/sub 8/ mixed with graphite, highly enriched uranium metal discs, and depleted uranium metal. These materials are typical of the samples of interest to the IAEA inspectors. It is concluded that the two instruments had very similar performance characteristics with the Random Driver giving better penetrability and the AWCC giving better stability.

Menlove, H.O.; Ensslin, N.; Sampson, T.E.

1979-01-01T23:59:59.000Z

326

Break-Even Cost for Residential Photovoltaics in the United States: Key Drivers and Sensitivities  

NLE Websites -- All DOE Office Websites (Extended Search)

09 09 December 2009 Break-Even Cost for Residential Photovoltaics in the United States: Key Drivers and Sensitivities Paul Denholm, Robert M. Margolis, Sean Ong, and Billy Roberts National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC Contract No. DE-AC36-08-GO28308 Technical Report NREL/TP-6A2-46909 December 2009 Break-Even Cost for Residential Photovoltaics in the United States: Key Drivers and Sensitivities Paul Denholm, Robert M. Margolis, Sean Ong, and Billy Roberts Prepared under Task No. PVD9.1210 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government.

327

OPERATION AND COMMISSIONING OF THE JEFFERSON LAB UV FEL USING AN SRF DRIVER ERL  

Science Conference Proceedings (OSTI)

We describe the operation and commissioning of the Jefferson Lab UV FEL using a CW SRF ERL driver. Based on the same 135 MeV linear accelerator as the Jefferson Lab 10 kW IR Upgrade FEL, the UV driver ERL uses a bypass geometry to provide transverse phase space control, bunch length compression, and nonlinear aberration compensation necessitating a unique set of commissioning and operational procedures. Additionally, a novel technique to initiate lasing is described. To meet these constraints and accommodate a challenging installation schedule, we adopted a staged commissioning plan with alternating installation and operation periods. This report addresses these issues and presents operational results from on-going beam operations.

R. Legg; S. Benson; G. Biallas; K. Blackburn; J. Boyce; D. Bullard; J. Coleman; C. Dickover; D. Douglas; F. Ellingsworth; P. Evtushenko; F. Hannon; C. Hernandez-Garcia; C. Gould; J. Gubeli; D. Hardy; K. Jordan; M. Klopf; J. Kortze; M. Marchlik; W. Moore; G. Neil; T. Powers; D. Sexton; Michelle D. Shinn; C. Tennant; R. Walker; G. Wilson

2011-03-01T23:59:59.000Z

328

Accounting for the Variation of Driver Aggression in the Simulation of Conventional and Advanced Vehicles: Preprint  

DOE Green Energy (OSTI)

Hybrid electric vehicles, plug-in hybrid electric vehicles, and battery electric vehicles offer the potential to reduce both oil imports and greenhouse gases, as well as to offer a financial benefit to the driver. However, assessing these potential benefits is complicated by several factors, including the driving habits of the operator. We focus on driver aggression, i.e., the level of acceleration and velocity characteristic of travel, to (1) assess its variation within large, real-world drive datasets, (2) quantify its effect on both vehicle efficiency and economics for multiple vehicle types, (3) compare these results to those of standard drive cycles commonly used in the industry, and (4) create a representative drive cycle for future analyses where standard drive cycles are lacking.

Neubauer, J.; Wood, E.

2013-03-01T23:59:59.000Z

329

Accounting for the Variation of Driver Aggression in the Simulation of Conventional and Advanced Vehicles  

DOE Green Energy (OSTI)

Hybrid electric vehicles, plug-in hybrid electric vehicles, and battery electric vehicles offer the potential to reduce both oil imports and greenhouse gases, as well as to offer a financial benefit to the driver. However, assessing these potential benefits is complicated by several factors, including the driving habits of the operator. We focus on driver aggression, i.e., the level of acceleration and velocity characteristic of travel, to (1) assess its variation within large, real-world drive datasets, (2) quantify its effect on both vehicle efficiency and economics for multiple vehicle types, (3) compare these results to those of standard drive cycles commonly used in the industry, and (4) create a representative drive cycle for future analyses where standard drive cycles are lacking.

Neubauer, J.; Wood, E.

2013-01-01T23:59:59.000Z

330

Session 4: "Short-Term Energy Prices - What Drivers Matter Most?"  

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

4: "Short-Term Energy Prices - What Drivers Matter Most?" 4: "Short-Term Energy Prices - What Drivers Matter Most?" Speakers: Howard K. Gruenspecht, EIA David M. Arseneau, Federal Reserve Board Guy F. Caruso, Center for Strategic and International Studies Christopher Ellsworth, Federal Energy Regulatory Commission Edward L. Morse, Credit Suisse Securities [Note: Recorders did not pick up introduction of panel (see biographies for details on the panelists) or introduction of session.] Howard: And this presentation could not be more timely, given current developments in oil and natural gas markets and the start of the traditional summer driving season. In discussions of rapidly rising oil prices leading to a peak of $147 per barrel in the summer of 2008, the factors that were traditionally the focus of EIA's

331

Commissioning of the IGp Feedback System at DAFNE  

Science Conference Proceedings (OSTI)

The iGp (Integrated Gigasample Processor) is an innovative digital bunch-by-bunch feedback system developed by a KEK / SLAC / INFN-LNF joint collaboration. The processing unit can sample at 500 MHz and compute the bunch-by-bunch output signal for up to {approx}5000 bunches. The feedback gateware code is implemented inside just one FPGA (Field Programmable Gate Array) chip, a Xilinx Virtex-II. The FPGA implements two banks of 16-tap FIR (Finite Impulse Response) filters. Each filter is realtime programmable through the operator interface. At DA{Phi}NE, the Frascati {Phi}-Factory, two iGp units have been commissioned in the April 2007. The iGp systems have substituted the previous betatron feedback systems. This insertion has been very fast and has shown no problems involving just a substitution of the old, less flexible, digital systems, letting unchanged the baseband analog frontend and backend. The commissioning has been very simple, due to the complete and powerful EPICS operator interface, working well in local and remote operations. The software includes also tools for analyzing post processor data. A description of the commissioning with the operations done is reported.

Drago, A.; /Frascati; Fox, J.D.; /SLAC; Teytelman, D.; /Dimtel, Redwood City; Tobiyama, M.; /KEK, Tsukuba

2011-11-01T23:59:59.000Z

332

On X-Channels with Feedback and Delayed CSI  

E-Print Network (OSTI)

The sum degrees of freedom (DoF) of the two-user MIMO X-channel is characterized in the presence of output feedback and delayed channel state information (CSI). The number of antennas at each transmitters is assumed to be M and the number of antennas at each of the receivers is assumed to be N. It is shown that the sum DoF of the two-user MIMO X-channel is the same as the sum DoF of a two-user MIMO broadcast channel with 2M transmit antennas, and N antennas at each receiver. Hence, for this symmetric antenna configuration, there is no performance loss in the sum degrees of freedom due to the distributed nature of the transmitters. This result highlights the usefulness of feedback and delayed CSI for the MIMO X-channel. The K-user X-channel with single antenna at each transmitter and each receiver is also studied. In this network, each transmitter has a message intended for each receiver. For this network, it is shown that the sum DoF with partial output feedback alone is at least 2K/(K+1). This lower bound is...

Tandon, Ravi; Poor, H Vincent; Shamai, Shlomo

2012-01-01T23:59:59.000Z

333

UV Radiative Feedback During the Advanced Stages of Reionization  

E-Print Network (OSTI)

The ionizing ultraviolet background (UVB) during reionization can suppress the gas content of low-mass galaxies, even those capable of efficient atomic cooling, and thus lead to an extended reionization epoch. In this work, we explore the importance of negative UV radiative feedback on Tvir > 10^4 K halos during the middle and late stages of reionization. We do not try to self-consistently model reionization; instead, we explore a large parameter space in an attempt to draw general, robust conclusions. We do this using a tiered approach. Using 1-D hydrodynamical simulations, we model the collapse of gas onto halos of various masses under UVBs of various intensities. We then generate realistic, parametrized maps of the inhomogeneous UVB, using large-scale semi-numeric simulations. By combining these results, we find that under all reasonably conservative scenarios, UV feedback on atomically-cooled halos is not strong enough to notably delay the bulk of reionization. Such a delay is only likely if ionizing efficiencies of z > 10 sources are much higher (~ two orders of magnitude) than z ~ 6 data seem to imply. We also find that feedback is very strongly dependent on halo mass. Our results suggest that the natural time-scale for the bulk of reionization is the growth of the global collapsed fraction contained in Tvir > 10^4 K halos. Finally, our results underscore the importance of taking into account extended dynamical ranges when modeling reionization.

Andrei Mesinger; Mark Dijkstra

2008-06-19T23:59:59.000Z

334

Design of Accumulator and Compressor Rings for the Project-X Based Proton Driver  

Science Conference Proceedings (OSTI)

A Muon Collider (MC) and a Neutrino Factory (NF) - which may be considered as a step towards a MC - both require a high-power ({approx}4 MW) proton driver providing short (compressor ring can be nearly isochronous in order to limit the required RF voltage and reduce the dispersion contribution to the beam size. In the present report we consider ring lattice designs which achieve these goals.

Alexahin, Y.; Neuffer, D.; /Fermilab

2012-05-01T23:59:59.000Z

335

AGS performance and upgrades; A possible proton driver for a muon collider  

SciTech Connect

After the successful completion of the AGS Booster and several upgrades of the AGS, a new intensity record of 6.3 x 10{sup 13} protons per pulse accelerated to 24GeV was achieved. Further intensity upgrades are being discussed that could increase the average delivered beam intensity by up to a factor of six. The total beam power then reaches almost 1 MW and the AGS can then be considered as a proton driver for a muon collider.

Roser, T.

1995-12-31T23:59:59.000Z

336

Regional Supply Outlook for Market Driver Coals: A New Set of Fundamentals?  

Science Conference Proceedings (OSTI)

Coal prices have peaked twice since 2000 and have yet to return to pre-2000 levels. In the wake of this volatility, this report examines how coal supply fundamentals are changing for key "market-driver" coals and how these changes impact future markets for coal. Many believe the power industry will be able to use a broader range of cheaper, more abundant coals once tighter environmental requirements force additional technology controls around the country. Contrary to this belief, this report provides evi...

2003-11-20T23:59:59.000Z

337

Managing the Drivers of Air Flow and Water Vapor Transport in Existing Single Family Homes (Revised)  

SciTech Connect

This document focuses on managing the driving forces which move air and moisture across the building envelope. While other previously published Measure Guidelines focus on elimination of air pathways, the ultimate goal of this Measure Guideline is to manage drivers which cause air flow and water vapor transport across the building envelope (and also within the home), control air infiltration, keep relative humidity (RH) within acceptable limits, avoid combustion safety problems, improve occupant comfort, and reduce house energy use.

Cummings, J.; Withers, C.; Martin, E.; Moyer, N.

2012-10-01T23:59:59.000Z

338

Analytic Framework for Evaluation of State Energy Efficiency and Renewable Energy Policies with Reference to Stakeholder Drivers  

SciTech Connect

This report presents the framework that was developed to analyze energy efficiency and renewable energy policies on the state level based on how well they meet the stakeholder drivers.

Brown, E.; Mosey, G.

2008-07-01T23:59:59.000Z

339

Survey of Laser Markets Relevant to Inertial Fusion Energy Drivers, information for National Research Council  

Science Conference Proceedings (OSTI)

Development of a new technology for commercial application can be significantly accelerated by leveraging related technologies used in other markets. Synergies across multiple application domains attract research and development (R and D) talent - widening the innovation pipeline - and increases the market demand in common components and subsystems to provide performance improvements and cost reductions. For these reasons, driver development plans for inertial fusion energy (IFE) should consider the non-fusion technology base that can be lveraged for application to IFE. At this time, two laser driver technologies are being proposed for IFE: solid-state lasers (SSLs) and KrF gas (excimer) lasers. This document provides a brief survey of organizations actively engaged in these technologies. This is intended to facilitate comparison of the opportunities for leveraging the larger technical community for IFE laser driver development. They have included tables that summarize the commercial organizations selling solid-state and KrF lasers, and a brief summary of organizations actively engaged in R and D on these technologies.

Bayramian, A J; Deri, R J; Erlandson, A C

2011-02-24T23:59:59.000Z

340

Modeling Altruistic and Aggressive Driver Behavior in a No-Notice Evacuation  

Science Conference Proceedings (OSTI)

This study examines the impact of altruistic and aggressive driver behavior on the effectiveness of an evacuation for a section of downtown Atlanta. The study area includes 37 signalized intersections, seven ramps, and 48 parking lots that vary by size, type (lot versus garage), peak volume, and number of ingress and egress points. A detailed microscopic model of the study area was created in VISSIM. Different scenarios examined the impacts of driver behavior on parking lot discharge rates and the loading rates from side streets on primary evacuation routes. A new methodology was created to accurately represent parking lot discharge rates. This study is also unique in that it assumes a "worst case scenario" that occurs with no advance notice during the morning peak period, when vehicles must transition from inbound to outbound routes. Simulation results indicate that while overall network clearance times are similar across scenarios, the distribution of delay on individual routes and across parking lots differ markedly. More equitable solutions (defined as the allocation of delay from parking lots and side streets to main evacuation routes) were observed with altruistic driver behavior.

Brandstetter, Tim [Kimley-Horn and Associates; Garrow, Dr. Laurie [Georgia Institute of Technology; Hunter, Dr. Michael [Georgia Institute of Technology; Southworth, Frank [ORNL

2007-01-01T23:59:59.000Z

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


341

Break-Even Cost for Residential Photovoltaics in the United States: Key Drivers and Sensitivities  

DOE Green Energy (OSTI)

Grid parity--or break-even cost--for photovoltaic (PV) technology is defined as the point where the cost of PV-generated electricity equals the cost of electricity purchased from the grid. Break-even cost is expressed in $/W of an installed system. Achieving break-even cost is a function of many variables. Consequently, break-even costs vary by location and time for a country, such as the United States, with a diverse set of resources, electricity prices, and other variables. In this report, we analyze PV break-even costs for U.S. residential customers. We evaluate some key drivers of grid parity both regionally and over time. We also examine the impact of moving from flat to time-of-use (TOU) rates, and we evaluate individual components of the break-even cost, including effect of rate structure and various incentives. Finally, we examine how PV markets might evolve on a regional basis considering the sensitivity of the break-even cost to four major drivers: technical performance, financing parameters, electricity prices and rates, and policies. We find that local incentives rather than ?technical? parameters are in general the key drivers of the break-even cost of PV. Additionally, this analysis provides insight about the potential viability of PV markets.

Denholm, P.; Margolis, R. M.; Ong, S.; Roberts, B.

2009-12-01T23:59:59.000Z

342

Accounting for the Variation of Driver Aggression in the Simulation of Conventional and Advanced Vehicles (Presentation)  

SciTech Connect

This presentation discusses a method of accounting for realistic levels of driver aggression to higher-level vehicle studies, including the impact of variation in real-world driving characteristics (acceleration and speed) on vehicle energy consumption and different powertrains (e.g., conventionally powered vehicles versus electrified drive vehicles [xEVs]). Aggression variation between drivers can increase fuel consumption by more than 50% or decrease it by more than 20% from average. The normalized fuel consumption deviation from average as a function of population percentile was found to be largely insensitive to powertrain. However, the traits of ideal driving behavior are a function of powertrain. In conventional vehicles, kinetic losses dominate rolling resistance and aerodynamic losses. In xEVs with regenerative braking, rolling resistance and aerodynamic losses dominate. The relation of fuel consumption predicted from real-world drive data to that predicted by the industry-standard HWFET, UDDS, LA92, and US06 drive cycles was not consistent across powertrains, and varied broadly from the mean, median, and mode of real-world driving. A drive cycle synthesized by NREL's DRIVE tool accurately and consistently reproduces average real-world for multiple powertrains within 1%, and can be used to calculate the fuel consumption effects of varying levels of driver aggression.

Neubauer, J.; Wood, E.

2013-05-01T23:59:59.000Z

343

Accounting for the Variation of Driver Aggression in the Simulation of Conventional and Advanced Vehicles (Presentation)  

SciTech Connect

This presentation discusses a method of accounting for realistic levels of driver aggression to higher-level vehicle studies, including the impact of variation in real-world driving characteristics (acceleration and speed) on vehicle energy consumption and different powertrains (e.g., conventionally powered vehicles versus electrified drive vehicles [xEVs]). Aggression variation between drivers can increase fuel consumption by more than 50% or decrease it by more than 20% from average. The normalized fuel consumption deviation from average as a function of population percentile was found to be largely insensitive to powertrain. However, the traits of ideal driving behavior are a function of powertrain. In conventional vehicles, kinetic losses dominate rolling resistance and aerodynamic losses. In xEVs with regenerative braking, rolling resistance and aerodynamic losses dominate. The relation of fuel consumption predicted from real-world drive data to that predicted by the industry-standard HWFET, UDDS, LA92, and US06 drive cycles was not consistent across powertrains, and varied broadly from the mean, median, and mode of real-world driving. A drive cycle synthesized by NREL's DRIVE tool accurately and consistently reproduces average real-world for multiple powertrains within 1%, and can be used to calculate the fuel consumption effects of varying levels of driver aggression.

Neubauer, J.; Wood, E.

2013-05-01T23:59:59.000Z

344

Feedback and sensitivity in an electrical circuit: An analog for climate models  

SciTech Connect

Earth's climate sensitivity is often interpreted in terms of feedbacks that can alter the sensitivity from that of a no-feedback Stefan-Boltzmann radiator, with the feedback concept and algebra introduced by analogy to the use of this concept in the electronics literature. This analogy is quite valuable in interpreting the sensitivity of the climate system, but usage of this algebra and terminology in the climate literature is often inconsistent, with resultant potential for confusion and loss of physical insight. Here a simple and readily understood electrical resistance circuit is examined in terms of feedback theory to introduce and define the terminology that is used to quantify feedbacks. This formalism is applied to the feedbacks in an energy-balance model of Earth's climate and used to interpret the magnitude of feedback in the climate system that corresponds to present estimates of Earth's climate sensitivity.

Schwartz, S.E.

2010-07-27T23:59:59.000Z

345

Conditions for Robustness and Nonrobustness of the Stability of Feedback Systems with Respect to Small Delays in the Feedback Loop  

E-Print Network (OSTI)

It has been observed that for many stable feedback control systems, the introduction of arbitrarily small time delays into the loop causes instability. In this paper we present a systematic frequency domain treatment of this phenomenon for distributed parameter systems. We consider the class of all matrix-valued transfer functions which are bounded on some right half-plane and which have a limit at +1 along the real axis. Such transfer functions are called regular. Under the assumption that a regular transfer function is stabilized by unity output feedback, we give sufficient conditions for the robustness and for the non-robustness of the stability with respect to small time delays in the loop. These conditions are given in terms of the high frequency behavior of the open loop system. Moreover, we discuss robustness of stability with respect to small delays, for feedback systems with dynamic compensators. In particular, we show that if a plant with infinitely many poles in the closed...

Hartmut Logemann; Richard Rebarber; George Weiss

1994-01-01T23:59:59.000Z

346

Feeling molecular forces: tactile feedback to enhance drug design  

E-Print Network (OSTI)

Molecular modeling is a vital component for structure-based drug design. Currently implemented technology combines data and graphics to give the user visual capabilities to assist in discovering possible binding arrangements. Visual modeling has become a tremendous help to scientists in reducing the amount of time needed to create new inhibitory compounds. However, the visual medium used for modeling lacks the ability to convey the forces between the molecules to the user. Potentially, tactile feedback can provide this missing information. SensAble Devices has developed a device capable of producing force feedback to a user-defined environment called the PHANToM, The PHANToM is a 6 dimensional (3 translational and 3 rotational) haptic device that can return force and torque to the user through a hand held stylus. The system configuration for molecular modeling consists of integrating the haptic device with a high-end PC running Windows NT and developing code to model the intermolecular forces. The programming language used was C with some C++ constructs and the OpenGL graphics library for the graphics implementation. The optimized code running with the system has proven capable of calculating and relaying tactile feedback between a 100-atom active site of a protein and a small 15-atom inhibitor in real time (ca. 1 millisecond). Trials are now underway on the system to evaluate accuracy and explore other forms of useful output. Once this is accomplished, modeling will be done on an active site and an untested inhibitor to evaluate novel binding modes.

Williams, Jocylin Amber

2000-01-01T23:59:59.000Z

347

Self-Excitation and Feedback Cooling of an Isolated Proton  

Science Conference Proceedings (OSTI)

The first one-proton self-excited oscillator (SEO) and one-proton feedback cooling are demonstrated. In a Penning trap with a large magnetic gradient, the SEO frequency is resolved to the high precision needed to detect a one-proton spin flip. This is after undamped magnetron motion is sideband cooled to a 14 mK theoretical limit, and despite random frequency shifts (typically larger than those from a spin flip) that take place every time sideband cooling is applied. The observations open a possible path towards a million-fold improved comparison of the p and p magnetic moments.

Guise, N.; DiSciacca, J.; Gabrielse, G. [Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States)

2010-04-09T23:59:59.000Z

348

Ignition feedback regenerative free electron laser (FEL) amplifier  

Science Conference Proceedings (OSTI)

An ignition feedback regenerative amplifier consists of an injector, a linear accelerator with energy recovery, and a high-gain free electron laser amplifier. A fraction of the free electron laser output is coupled to the input to operate the free electron laser in the regenerative mode. A mode filter in this loop prevents run away instability. Another fraction of the output, after suitable frequency up conversion, is used to drive the photocathode. An external laser is provided to start up both the amplifier and the injector, thus igniting the system.

Kim, Kwang-Je (Burr Ridge, IL); Zholents, Alexander (Walnut Creek, CA); Zolotorev, Max (Oakland, CA)

2001-01-01T23:59:59.000Z

349

Multi source feedback based performance appraisal system using Fuzzy logic decision support system  

E-Print Network (OSTI)

In Multi-Source Feedback or 360 Degree Feedback, data on the performance of an individual are collected systematically from a number of stakeholders and are used for improving performance. The 360-Degree Feedback approach provides a consistent management philosophy meeting the criterion outlined previously. The 360-degree feedback appraisal process describes a human resource methodology that is frequently used for both employee appraisal and employee development. Used in employee performance appraisals, the 360-degree feedback methodology is differentiated from traditional, top-down appraisal methods in which the supervisor responsible for the appraisal provides the majority of the data. Instead it seeks to use information gained from other sources to provide a fuller picture of employees' performances. Similarly, when this technique used in employee development it augments employees' perceptions of training needs with those of the people with whom they interact. The 360-degree feedback based appraisal is a c...

Meenakshi, G

2012-01-01T23:59:59.000Z

350

Smart Grid as a Driver for Energy-Intensive Industries: A Data Center Case  

NLE Websites -- All DOE Office Websites (Extended Search)

Smart Grid as a Driver for Energy-Intensive Industries: A Data Center Case Smart Grid as a Driver for Energy-Intensive Industries: A Data Center Case Study Title Smart Grid as a Driver for Energy-Intensive Industries: A Data Center Case Study Publication Type Conference Paper LBNL Report Number LBNL-6104E Year of Publication 2012 Authors Ganti, Venkata, and Girish Ghatikar Conference Name Grid-Interop 2012 Date Published 12/2012 Conference Location Irving, TX Keywords data centers, market sectors, technologies Abstract The Smart Grid facilitates integration of supply- and demand-side services, allowing the end-use loads to be dynamic and respond to changes in electricity generation or meet localized grid needs. Expanding from previous work, this paper summarizes the results from field tests conducted to identify demand response opportunities in energy-intensive industrial facilities such as data centers. There is a significant opportunity for energy and peak-demand reduction in data centers as hardware and software technologies, sensing, and control methods can be closely integrated with the electric grid by means of demand response. The paper provides field test results by examining distributed and networked data center characteristics, end-use loads and control systems, and recommends opportunities and challenges for grid integration. The focus is on distributed data centers and how loads can be "migrated" geographically in response to changing grid supply (increase/decrease). In addition, it examines the enabling technologies and demand-response strategies of high performance computing data centers. The findings showed that the studied data centers provided average load shed of up to 10% with short response times and no operational impact. For commercial program participation, the load-shed strategies must be tightly integrated with data center automation tools to make them less resource-intensive.

351

Battery Electric Vehicles: Range Optimization and Diversification for the U.S. Drivers  

DOE Green Energy (OSTI)

Properly selecting the driving range is critical for accurately predicting the market acceptance and the resulting social benefits of BEVs. Analysis of transportation technology transition could be biased against battery electric vehicles (BEV) and mislead policy making, if BEVs are not represented with optimal ranges. This study proposes a coherent method to optimize the BEV driving range by minimizing the range-related cost, which is formulated as a function of range, battery cost, energy prices, charging frequency, access to backup vehicles, and the cost and refueling hassle of operating the backup vehicle. This method is implemented with a sample of 36,664 drivers, representing U.S. new car drivers, based on the 2009 National Household Travel Survey data. Key findings are: 1) Assuming the near term (2015) battery cost at $405/kWh, about 98% of the sampled drivers are predicted to prefer a range below 200 miles, and about 70% below 100 miles. The most popular 20-mile band of range is 57 to77 miles, unsurprisingly encompassing the Leaf s EPA-certified 73-mile range. With range limited to 4 or 7 discrete options, the majority are predicted to choose a range below 100 miles. 2) Found as a statistically robust rule of thumb, the BEV optimal range is approximately 0.6% of one s annual driving distance. 3) Reducing battery costs could motivate demand for larger range, but improving public charging may cause the opposite. 4) Using a single range to represent BEVs in analysis could significantly underestimate their competitiveness e.g. by $3226/vehicle if BEVs are represented with 73-mile range only or by $7404/BEV if with 150-mile range only. Range optimization and diversification into 4 or 7 range options reduce such analytical bias by 78% or 90%, respectively.

Lin, Zhenhong [ORNL

2012-01-01T23:59:59.000Z

352

Feedback control of flow alignment in sheared liquid crystals  

E-Print Network (OSTI)

Based on a continuum theory, we investigate the manipulation of the non-equilibrium behavior of a sheared liquid crystal via closed-loop feedback control. Our goal is to stabilize a specific dynamical state, that is, the stationary "flow-alignment", under conditions where the uncontrolled system displays oscillatory director dynamics with in-plane symmetry. To this end we employ time-delayed feedback control (TDFC), where the equation of motion for the ith component, q_i(t), of the order parameter tensor is supplemented by a control term involving the difference q_i(t)-q_i(t-\\tau). In this diagonal scheme, \\tau is the delay time. We demonstrate that the TDFC method successfully stabilizes flow alignment for suitable values of the control strength, K, and \\tau; these values are determined by solving an exact eigenvalue equation. Moreover, our results show that only small values of K are needed when the system is sheared from an isotropic equilibrium state, contrary to the case where the equilibrium state is nematic.

David A. Strehober; Eckehard Schöll; Sabine H. L. Klapp

2013-08-29T23:59:59.000Z

353

Cloud Feedbacks on Climate: A Challenging Scientific Problem  

Science Conference Proceedings (OSTI)

One reason it has been difficult to develop suitable social and economic policies to address global climate change is that projected global warming during the coming century has a large uncertainty range. The primary physical cause of this large uncertainty range is lack of understanding of the magnitude and even sign of cloud feedbacks on the climate system. If Earth's cloudiness responded to global warming by reflecting more solar radiation back to space or allowing more terrestrial radiation to be emitted to space, this would mitigate the warming produced by increased anthropogenic greenhouse gases. Contrastingly, a cloud response that reduced solar reflection or terrestrial emission would exacerbate anthropogenic greenhouse warming. It is likely that a mixture of responses will occur depending on cloud type and meteorological regime, and at present, we do not know what the net effect will be. This presentation will explain why cloud feedbacks have been a challenging scientific problem from the perspective of theory, modeling, and observations. Recent research results on observed multidecadal cloud-atmosphere-ocean variability over the Pacific Ocean will also be shown, along with suggestions for future research.

Norris, Joel (Scripps Institution of Oceanography, UC San Diego)

2010-05-10T23:59:59.000Z

354

Marketer feedback to SAC Questions Data and Information  

E-Print Network (OSTI)

The Marketers constituency has largely been pleased with the level of data provided by the IESO on system dispatch, constraints, generation and pricing. Forecasts of SBG have been improving but still focus largely on the short term. Longer term forecasts of SBG are important for decision making and should be added to the list of information and analysis provided by the IESO. Certainly, there should not be any less data and information published under a merged OESO and any additional transparency wherever possible is of great benefit to all involved, as well as in the interest of long-term market efficiency and system planning. SAC Terms of Reference The traditional role of the SAC to provide feedback and advice to the IESO management and Board in relation to the markets being designed, operated and dispatched by the IESO should continue in the same format as it has regardless of the creation of a new OESO. Adding representation from the OPA to the SAC would allow for additional dialogue between incumbent market participants and the OPA function in a revised OESO which should provide additional value. While the existing composition of the SAC is effective as structured, the Marketers constituency would be appreciative of greater clarity in the Terms of Reference as to how the SAC feedback will be incorporated into decision-making within the

unknown authors

2012-01-01T23:59:59.000Z

355

Local beam position feedback experiments on the ESRF storage ring  

SciTech Connect

This paper describes the results of local beam position feedback experiments conducted on the ESRF storage ring using digital signal processing (DSP) under the trilateral agreement of collaboration among ESRF, APS, and SPring-8. Two rf beam position monitors (BPMS) in the, upstream and downstream of the insertion device (ID) and two x-ray BPMs in the sixth cell were used to monitor the electron beam and the x-ray beam emitted from the ID, respectively. The local bump coefficients were obtained using the technique of singular value decomposition (SVD) on the global response matrix for the bump magnets and all the available BPMs outside the local bump. The local response matrix was then obtained between the two three-magnet bumps and the position monitors. The data sampling frequency was 4 kHz and a proportional, integral, and derivative (PID) controller was used. The result indicates the closed-loop feedback bandwidth close to 100 Hz and clear attenuation ({approx} {minus}40 dB) of the 7-Hz beam motion due to girder vibration resonance. Comparison of the results using the rf BPMs and x-ray BPMs will be also discussed.

Chung, Y.; Kahana, E.; Kirchman, J. [and others

1995-06-01T23:59:59.000Z

356

Quantum measurements in continuous time, non Markovian evolutions and feedback  

E-Print Network (OSTI)

In this article we reconsider a version of quantum trajectory theory based on the stochastic Schr\\"odinger equation with stochastic coefficients, which was mathematically introduced in the '90s, and we develop it in order to describe the non Markovian evolution of a quantum system continuously measured and controlled thanks to a measurement based feedback. Indeed, realistic descriptions of a feedback loop have to include delay and thus need a non Markovian theory. The theory allows to put together non Markovian evolutions and measurements in continuous time in agreement with the modern axiomatic formulation of quantum mechanics. To illustrate the possibilities of such a theory, we apply it to a two-level atom stimulated by a laser. We introduce closed loop control too, via the stimulating laser, with the aim to enhance the "squeezing" of the emitted light, or other typical quantum properties. Note that here we change the point of view with respect to the usual applications of control theory. In our model the "system" is the two-level atom, but we do not want to control its state, to bring the atom to a final target state. Our aim is to control the "Mandel $Q$-parameter" and the spectrum of the emitted light; in particular the spectrum is not a property at a single time, but involves a long interval of times (a Fourier transform of the autocorrelation function of the observed output is needed).

Alberto Barchielli; Matteo Gregoratti

2011-11-29T23:59:59.000Z

357

Electricity-use Feedback in the Commercial Sector: Examining the Potential for Building Occupant Behavior Change  

Science Conference Proceedings (OSTI)

Feedback technologies to encourage behavior change have been explored in the residential sector for the past three decades, but the savings potential of using feedback strategies in the commercial sector, which represents over one quarter of US electricity sales, has yet to be adequately explored. Although a number of building load control technologies that include some form of feedback provision have existed for some years, they generally target technical staff. The focus of this report is to understand...

2010-12-13T23:59:59.000Z

358

Low-jitter high-power thyristor array pulse driver and generator  

DOE Patents (OSTI)

A method and apparatus for generating low-jitter, high-voltage and high-current pulses for driving low impedance loads such as detonator fuses uses a MOSFET driver which, when triggered, discharges a high-voltage pre-charged capacitor into the primary of a toroidal current-multiplying transformer with multiple isolated secondary windings. The secondary outputs are suitable for driving an array of thyristors that discharge a precharged high-voltage capacitor and thus generating the required high-voltage and high-current pulse.

Hanks, Roy L. (Byron, CA)

2002-01-01T23:59:59.000Z

359

Shaping the output pulse of a linear-transformer-driver module.  

SciTech Connect

We demonstrate that a wide variety of current-pulse shapes can be generated using a linear-transformer-driver (LTD) module that drives an internal water-insulated transmission line. The shapes are produced by varying the timing and initial charge voltage of each of the module's cavities. The LTD-driven accelerator architecture outlined in [Phys. Rev. ST Accel. Beams 10, 030401 (2007)] provides additional pulse-shaping flexibility by allowing the modules that drive the accelerator to be triggered at different times. The module output pulses would be combined and symmetrized by water-insulated radial-transmission-line impedance transformers [Phys. Rev. ST Accel. Beams 11, 030401 (2008)].

Long, Finis W.; McKee, G. Randall; Stoltzfus, Brian Scott; Woodworth, Joseph Ray; McKenney, John Lee; Fowler, William E.; Mazarakis, Michael Gerrassimos; Porter, John L.; Stygar, William A.; Savage, Mark Edward; LeChien, Keith, R.; Van De Valde, David M. (EG& G, Albuquerque, NM)

2008-11-01T23:59:59.000Z

360

Compilation of Results and Feedback Regarding Turbine Upgrades at Nuclear and Fossil Power Plants  

Science Conference Proceedings (OSTI)

This report compiles results and feedback and draws a number of conclusions and lessons learned regarding steam turbine generator upgrades at nuclear and fossil power plants.

2008-11-24T23:59:59.000Z

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


361

Feedback as a means of decreasing residential energy consumption. Report PU/CES 34  

SciTech Connect

When residential units are analyzed in human factor terms, it is apparent that the consumption level feedback (typically a bill, calculated once a month, over all appliances) is inadequate to give the resident useful information about his energy consuming actions. The present study tested the hypothesis that providing immediate feedback to homeowners concerning their daily rate of electric usage would be effective in reducing electric consumption. In the studied homes, central air-conditioning is the largest single source of electric power consumption during the summer. Accordingly, it was possible to predict the household's expected electric consumption in terms of the average daily outdoor temperature. Predicted electric consumption was derived from a previous month's modeling period during which a regression line was fitted to predict consumption from average daily temperature, for each home. Feedback was expressed as a percentage of actual consumption over predicted consumption. Feedback was displayed to homeowners four times a week for approximately one month. The results confirmed the prediction. Before feedback began, the feedback and control groups were consuming electricity at approximately equal rates. During the feedback period, the feedback group used 10.5 percent less electricity. The effectiveness of the feedback procedure was explained in terms of its cueing, motivational, and commitment functions.

Seligman, C.; Darley, J.M.

1976-08-01T23:59:59.000Z

362

Feedback Applications in Active Noise Control for Small Axial Cooling Fans.  

E-Print Network (OSTI)

??Feedback active noise control (ANC) has been applied as a means of attenuating broadband noise from a small axial cooling fan. Such fans are used… (more)

Green, Matthew J 1978-

2006-01-01T23:59:59.000Z

363

A model for improving microbial biofuel production using a synthetic feedback loop  

E-Print Network (OSTI)

potential for great impact. Biofuels are a promising form ofbe engineered to produce biofuels, the fuels are often toxicKeywords Feedback control Á Biofuels Á Biological control

Dunlop, Mary J.; Keasling, Jay D.; Mukhopadhyay, Aindrila

2010-01-01T23:59:59.000Z

364

Feedback improves the generalized degrees of freedom of the strong interference channel  

E-Print Network (OSTI)

wireless net- works within o(log(snr)) - the impact of relays, feedback, co- operation andoperation on the generalized degrees of freedom of interference and other wireless

Cadambe, Viveck R; Jafar, Syed A

2008-01-01T23:59:59.000Z

365

Design of Accumulator and Compressor Rings for the Project-X Based Proton Driver  

SciTech Connect

A Muon Collider (MC) and a Neutrino Factory (NF) - which may be considered as a step towards a MC - both require a high-power ({approx}4 MW) proton driver providing short (<1 m r.m.s. length) bunches for muon production. However, the driver repetition rates required for these two machines are different: {approx}15 Hz for MC and {approx}60 Hz for NF. This difference suggests employing two separate rings: one for accumulation of the proton beam from the Project-X linac in a few (e.g. 4) long bunches, the other for bunch compression - one by one for NF or all at a time for MC with simultaneous delivery to the target. The lattice requirements for these two rings are different: the momentum compaction factor in the accumulator ring should be large (and possibly negative) to avoid the microwave instability, while the compressor ring can be nearly isochronous in order to limit the required RF voltage and reduce the dispersion contribution to the beam size. In the present report we consider ring lattice designs which achieve these goals.

Alexahin, Y.; Neuffer, D.; /Fermilab

2012-05-01T23:59:59.000Z

366

Breakeven Cost for Residential Photovoltaics in the United States: Key Drivers and Sensitivities (Report Summary) (Presentation)  

DOE Green Energy (OSTI)

"Break-even cost" for photovoltaic (PV) technology is defined as the point where the cost of PV-generated electricity equals the cost of electricity purchased from the grid. Break-even cost is expressed in $/W of an installed system. Achieving break-even cost is a function of many variables. Consequently, break-even costs vary by location and time for a country, such as the United States, with a diverse set of resources, electricity prices, and other variables. In this presentation, we introduce an analysis of PV break-even costs for residential customers in the United States, including an evaluation of some of the key drivers of PV breakeven both regionally and over time. This presentation includes our methodology and presents results for both near-term residential breakeven costs(2009) and future market sensitivities of break-even costs (2015). See also the the report "Break-Even Cost for Residential Photovoltaics in the United States: Key Drivers and Sensitivities". Presentation for NREL/TP-6A2-45991.

Denholm, P.; Margolis, R. M.; Ong, S.; Roberts, B.

2009-12-01T23:59:59.000Z

367

Data Compilation for AGR-3/4 Driver Particle Composite LEU03-09T  

SciTech Connect

This document is a compilation of characterization data for the AGR-3/4 driver fuel coated particle composite LEU03-09T, a composite of four batches of TRISO-coated, nominally 350 {micro}m diameter, 19.7% low enrichment uranium oxide/uranium carbide kernels (LEUCO). The AGR-3/4 driver fuel particles were fabricated using the AGR-1 baseline coating conditions and consist of a spherical kernel coated with an {approx}50% dense carbon buffer layer (100 {micro}m nominal thickness) followed by a dense inner pyrocarbon layer (40 {micro}m nominal thickness) followed by a SiC layer (35 {micro}m nominal thickness) followed by another dense outer pyrocarbon layer (40 {micro}m nominal thickness). the coated particles were produced by ORNL for the Advanced Gas Reactor Fuel Development and Qualification (AGR) program to be put into compacts, along with designed-to-fail particles, for insertion in the AGR-3 and AGR-4 irradiation test capsules. The kernels were obtained from BWXT and identified as composite G73V-20-69303. The BWXT kernel lot G73V-20-69303 was riffled into sublots for characterization and coating by ORNL and identified as LEU03-?? (where ?? is a series of integers beginning with 01).

Hunn, John D [ORNL; Lowden, Richard Andrew [ORNL

2007-03-01T23:59:59.000Z

368

Review: Balancing Limiting Factors and Economic Drivers to Achieve Sustainable Midwestern US Agricultural Residue Feedstock Supplies  

Science Conference Proceedings (OSTI)

Advanced biofuels will be developed using cellulosic feedstock rather than grain or oilseed crops that can also be used for food and feed. To be sustainable, these new agronomic production systems must be economically viable without degrading soil resources. This review examines six agronomic factors that collectively define many of the limits and opportunities for harvesting crop residue for biofuel feedstock. These six “limiting factors” are discussed in relationship to economic drivers associated with harvesting corn (Zea mays L.) stover as a potential cellulosic feedstock. The limiting factors include soil organic carbon, wind and water erosion, plant nutrient balance, soil water and temperature dynamics, soil compaction, and off-site environmental impacts. Initial evaluations using the Revised Universal Soil Loss Equation 2.0 (RUSLE2) show that a single factor analysis based on simply meeting tolerable soil loss might indicate stover could be harvested sustainably, but the same analysis based on maintaining soil organic carbon shows the practice to be non-sustainable. Modifying agricultural management to include either annual or perennial cover crops is shown to meet both soil erosion and soil carbon requirements. The importance of achieving high yields and planning in a holistic manner at the landscape scale are also shown to be crucial for balancing limitations and drivers associated with renewable bioenergy production.

Wally W. Wilhelm; J. Richard Hess; Douglas L. Karlen; David J. Muth; Jane M. F. Johnson; John M. Baker; Hero T. Gollany; Jeff M. Novak; Diane E. Stott; Gary E. Varvel

2010-10-01T23:59:59.000Z

369

PCA9633 4-bit Fm+ I2C-bus LED driver  

E-Print Network (OSTI)

Red/Green/Blue/Amber (RGBA) color mixing applications. Each LED output has its own 8-bit resolution (256 steps) fixed frequency Individual PWM controller that operates at 97 kHz with a duty cycle that is adjustable from 0 % to 99.6 % to allow the LED to be set to a specific brightness value. A fifth 8-bit resolution (256 steps) Group PWM controller has both a fixed frequency of 190 Hz and an adjustable frequency between 24 Hz to once every 10.73 seconds with a duty cycle that is adjustable from 0 % to 99.6 % that is used to either dim or blink all LEDs with the same value. Each LED output can be off, on (no PWM control), set at its Individual PWM controller value or at both Individual and Group PWM controller values. The LED output driver is programmed to be either open-drain with a 25 mA current sink capability at 5 V or totem pole with a 25 mA sink, 10 mA source capability at 5 V. The PCA9633 operates with a supply voltage range of 2.3 V to 5.5 V and the outputs are 5.5 V tolerant. LEDs can be directly connected to the LED output (up to 25 mA, 5.5 V) or controlled with external drivers and a minimum amount of discrete components for larger current or higher voltage LEDs.

unknown authors

2008-01-01T23:59:59.000Z

370

Microsoft Word - Feedback_Form_July_20031.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

BROOKHAVEN ADVOCACY COUNCIL BROOKHAVEN ADVOCACY COUNCIL Employee/Guest/User Feedback Form The Brookhaven Advocacy Council (BAC) advises and makes recommendations to the Laboratory Director on the resolution of employee, guest and user concerns or issues that are brought to the attention of the Council. The Council functions independently of the Human Resources Division, reporting directly to the Laboratory Director. One of the Council's primary objectives is to improve the quality of life at BNL for all employees, guests and users. To that end, the Council invites you to share your experiences at BNL. Any information you provide is considered strictly confidential. You should feel free to contact any one of the Council members listed below for a one-on-one discussion, or if you prefer, complete the brief

371

Cost-efficient drilling using industrial robots with high-bandwidth force feedback  

Science Conference Proceedings (OSTI)

Here we present a method for high-precision drilling using an industrial robot with high-bandwidth force feedback, which is used for building up pressure to clamp-up an end-effector to the work-piece surface prior to drilling. The focus is to eliminate ... Keywords: Feedback, Force control, High-precision drilling, Industrial robotics, Motion control

Tomas Olsson; Mathias Haage; Henrik Kihlman; Rolf Johansson; Klas Nilsson; Anders Robertsson; Mats Björkman; Robert Isaksson; Gilbert Ossbahr; Torgny Brogårdh

2010-02-01T23:59:59.000Z

372

Relevance Feedback Learning for Web Image Retrieval Using Soft Support Vector Machine  

Science Conference Proceedings (OSTI)

Eliminating semantic gaps is important for image retrieving and annotating in content based image retrieval (CBIR), especially under web context. In this paper, a relevance feedback learning approach is proposed for web image retrieval, by using soft ... Keywords: Image retrieval, Relevance feedback learning, Sampling rule, Soft support vector machine

Yifei Zhang; Daling Wang; Ge Yu

2008-11-01T23:59:59.000Z

373

Separation of Contributions from Radiative Feedbacks to Polar Amplification on an Aquaplanet  

Science Conference Proceedings (OSTI)

When climate is forced by a doubling of CO2, a number of feedback processes are induced, such as changes of water vapor, clouds, and surface albedo. Here the CO2 forcing and concomitant feedbacks are studied individually using a general ...

Peter L. Langen; Rune Grand Graversen; Thorsten Mauritsen

2012-04-01T23:59:59.000Z

374

The dubuque electricity portal: evaluation of a city-scale residential electricity consumption feedback system  

Science Conference Proceedings (OSTI)

This paper describes the Dubuque Electricity Portal, a city-scale system aimed at supporting voluntary reductions of electricity consumption. The Portal provided each household with fine-grained feedback on its electricity use, as well as using incentives, ... Keywords: behavior change, consumption feedback systems, ecf, electricity, smart meters, social comparison, sustainability

Thomas Erickson; Ming Li; Younghun Kim; Ajay Deshpande; Sambit Sahu; Tian Chao; Piyawadee Sukaviriya; Milind Naphade

2013-04-01T23:59:59.000Z

375

Finite element modeling of a vibrating touch screen actuated by piezo patches for haptic feedback  

Science Conference Proceedings (OSTI)

The aim of our work is to design a touch screen for displaying vibrotactile haptic feedback to the user via piezo patches attached to its surface. One of the challenges in the design is the selection of appropriate boundary conditions and the piezo configurations ... Keywords: finite element modeling, piezo patch actuators, touch screen, vibrotactile haptic feedback

Buket Baylan; Ugur Aridogan; Cagatay Basdogan

2012-06-01T23:59:59.000Z

376

Forcing Versus Feedback: Epidemic Malaria and Monsoon Rains in Northwest India  

E-Print Network (OSTI)

Forcing Versus Feedback: Epidemic Malaria and Monsoon Rains in Northwest India Karina Laneri1 the monsoonal rains. Consideration of a more complex model with clinical immunity demonstrates the robustness Feedback: Epidemic Malaria and Monsoon Rains in Northwest India. PLoS Comput Biol 6(9): e1000898. doi:10

Pascual, Mercedes

377

Content-based image retrieval with relevance feedback using random walks  

Science Conference Proceedings (OSTI)

In this paper, we propose a novel approach to content-based image retrieval with relevance feedback, which is based on the random walker algorithm introduced in the context of interactive image segmentation. The idea is to treat the relevant and non-relevant ... Keywords: Content-based image retrieval, Random walks, Relevance feedback

Samuel Rota Bulò; Massimo Rabbi; Marcello Pelillo

2011-09-01T23:59:59.000Z

378

Rotor power feedback control of wind turbine system doubly-fed induction generator  

Science Conference Proceedings (OSTI)

The paper deals with a new system of wind turbine active power vector control. The already familiar cascade regulation with internal vector component feedback of rotor current and external active and reactive power feedbacks control of wind turbine has ... Keywords: DFIG rotor power regulator, doubly-fed induction generator, simulation, vector control

J. Smajo

2006-09-01T23:59:59.000Z

379

Translation enhancement: a new relevance feedback method for cross-language information retrieval  

Science Conference Proceedings (OSTI)

As an effective technique for improving retrieval effectiveness, relevance feedback (RF) has been widely studied in both monolingual and cross-language information retrieval (CLIR) settings. The studies of RF in CLIR have been focused on query expansion ... Keywords: cross-language information retrieval, query expansion, relevance feedback, translation enhancement

Daqing He; Dan Wu

2008-10-01T23:59:59.000Z

380

The dubuque water portal: evaluation of the uptake, use and impact of residential water consumption feedback  

Science Conference Proceedings (OSTI)

The Dubuque Water Portal is a system aimed at supporting voluntary reductions of water consumption that is intended to be deployed city-wide. It provides each household with fine-grained, near real time feedback on their water consumption, as well as ... Keywords: behavior change, games, smart meters, social comparison, sustainability, water, water and energy feedback systems

Thomas Erickson; Mark Podlaseck; Sambit Sahu; Jing D. Dai; Tian Chao; Milind Naphade

2012-05-01T23:59:59.000Z

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


381

Metrics-Based Feedback Cycles for Software Life-Cycle Management and Process Improvement  

E-Print Network (OSTI)

This paper summarizes a global organizational feedback cycle, composed of four component feedback cycles, by which the COCOMO II cost estimation model [Boehm et al., 2000] can be used for (1) project or product line scoping; (2) project or product line management; (3) model recalibration to changing circumstances; and (4) evaluation project, product line, or organizational continuous process improvement initiatives

Barry Boehm

2000-01-01T23:59:59.000Z

382

Interaction frogger: a design framework to couple action and function through feedback and feedforward  

Science Conference Proceedings (OSTI)

In this paper we present a design framework to analyze person-product interaction. Its focus is on how the user's action and the product's function are coupled through different types of feedback and feedforward: inherent and augmented information. Instead ... Keywords: design framework, feedback, feedforward, interaction models, tangible user interface

S. A. G. Wensveen; J. P. Djajadiningrat; C. J. Overbeeke

2004-08-01T23:59:59.000Z

383

Simple and Efficient Algorithms for Computing Smooth, Collision-free Feedback Laws Over Given Cell Decompositions  

Science Conference Proceedings (OSTI)

This paper presents a novel approach to computing feedback laws in the presence of obstacles. Instead of computing a trajectory between a pair of initial and goal states, our algorithms compute a vector field over the entire state space; all trajectories ... Keywords: collision avoidance, feedback control, motion planning, navigation functions, potential fields, vector fields

Stephen R. Lindemann; Steven M. Lavalle

2009-05-01T23:59:59.000Z

384

Dependence Balance Based Outer Bounds for Gaussian Networks With Cooperation and Feedback  

Science Conference Proceedings (OSTI)

We obtain new outer bounds on the capacity regions of the two-user multiple access channel with generalized feedback (MAC-GF) and the two-user interference channel with generalized feedback (IC-GF). These outer bounds are based on the idea of dependence ...

R. Tandon; S. Ulukus

2011-07-01T23:59:59.000Z

385

Using experts feedback in clinical case resolution and arbitration as accuracy diagnosis methodology  

Science Conference Proceedings (OSTI)

This paper proposes a new methodology for assessing the efficiency of medical diagnostic systems and clinical decision support systems by using the feedback/opinions of medical experts. The methodology behind this work is based on a comparison between ... Keywords: Clinical case, Evaluation, Expert feedback, Medical diagnosis, PRAS-M

Alejandro RodríGuez-GonzáLez, Javier Torres-NiñO, Rafael Valencia-Garcia, Miguel A. Mayer, Giner Alor-Hernandez

2013-09-01T23:59:59.000Z

386

Brief paper: Speed regulation with measured output feedback in the control of heavy haul trains  

Science Conference Proceedings (OSTI)

An approach of output regulation with measurement feedback is proposed for the control of heavy haul trains. The objective is to regulate all cars' speeds to a prescribed speed profile. The output regulation problem of nonlinear systems with measurement ... Keywords: ECP braking system, Heavy haul trains, Measured output feedback, Output regulation, Quadratic programming

X. Zhuan; X. Xia

2008-01-01T23:59:59.000Z

387

Drivers of demand, interrelationships, and nutritional impacts within the nonalcoholic beverage complex  

E-Print Network (OSTI)

This study analyzes the economic and demographic drivers of household demand for at-home consumption of nonalcoholic beverages in 1999. Drivers of available intake of calories, calcium, vitamin C, and caffeine associated with the purchase of nonalcoholic beverages also are analyzed. The 1999 ACNielsen HomeScan Panel, purchased by the U. S. Department of Agriculture, Economic Research Service, is the source of the data for this project. Many different classifications of beverages were analyzed including milk(whole, reduced fat, flavored, and non-flavored), regular and low-calorie carbonated soft drinks, powdered soft drinks, isotonics(sports drinks), juices(orange, apple, vegetable, and other juices), fruit drinks, bottled water, coffee(regular and decaffeinated), and tea(regular and decaffeinated). Probit models were used to find demographic drivers that affect the choice to purchase a nonalcoholic beverage. Heckman sample selection models and cross tabulations were used to find demographic patterns pertaining to the amount of purchase of the nonalcoholic beverages. The nutrient analysis indicated that individuals receive 211 calories, 217 mg of calcium, 45 mg of vitamin C, and 95 mg of caffeine per day from all nonalcoholic beverages. A critical finding for the nutrient analysis was that persons within households below 130% of poverty were receiving more calories and caffeine from nonalcoholic beverages compared to persons within households above 130% of poverty. Likewise, persons in households below 130% of poverty were receiving less calcium and vitamin C from nonalcoholic beverages compared to persons in households above 130% of poverty. Price and cross-price elasticities were examined using the LA/AIDS model. Methodological concerns of data frequency, beverage aggregations, and censoring techniques were explored and discussed. Own-price and cross-price elasticities for the beverages were uncovered. Price elasticities by selected demographic groups also were investigated. Results indicated that price elasticities varied by demographics, specifically for race, region, and presence of children within the household. The information uncovered in this dissertation helps to update consumer demand knowledge and nutritional intake understanding in relation to nonalcoholic beverages. The information can be used as a guide for marketing strategists for targeting and promotion as well as for policy makers looking to improve nutritional intake received from nonalcoholic beverages.

Pittman, Grant Falwell

2004-08-01T23:59:59.000Z

388

Effect of Ice-Albedo Feedback on Global Sensitivity in a One-Dimensional Radiative-Convective Climate Model  

Science Conference Proceedings (OSTI)

The feedback between ice albedo and temperature is included in a one-dimensional radiative-convective climate model. The effect of this feedback on global sensitivity to changes in solar constant is studied for the current climate conditions. ...

Wei-Chyung Wang; Peter H. Stone

1980-03-01T23:59:59.000Z

389

The impact of baroclinic eddy feedback on the persistence of jet variability in the two layer model  

Science Conference Proceedings (OSTI)

Although it is well known that the persistence of extratropical jet shifts is enhanced by a positive eddy feedback, the dynamics of this feedback is still debated. Two types of mechanisms have been proposed: barotropic mechanisms rely on changes ...

Pablo Zurita-Gotor; Javier Blanco-Fuentes; Edwin P. Gerber

390

Impact of Vegetation Feedback on the Response of Precipitation to Antecedent Soil Moisture Anomalies over North America  

Science Conference Proceedings (OSTI)

Previous studies support a positive soil moisture–precipitation feedback over a major fraction of North America; that is, initial soil moisture anomalies lead to precipitation anomalies of the same sign. To investigate how vegetation feedback ...

Yeonjoo Kim; Guiling Wang

2007-06-01T23:59:59.000Z

391

Uniform irradiation of adjustable target spots in high-power laser driver  

Science Conference Proceedings (OSTI)

For smoothing and shaping the on-target laser patterns flexibly in high-power laser drivers, a scheme has been developed that includes a zoom lens array and two-dimensional smoothing by spectral dispersion (SSD). The size of the target pattern can be controlled handily by adjusting the focal length of the zoom lens array, while the profile of the pattern can be shaped by fine tuning the distance between the target and the focal plane of the principal focusing lens. High-frequency stripes inside the pattern caused by beamlet interference are wiped off by spectral dispersion. Detailed simulations indicate that SSD works somewhat differently for spots of different sizes. For small spots, SSD mainly smooths the intensity modulation of low-to-middle spatial frequency, while for large spots, SSD sweeps the fine speckle structure to reduce nonuniformity of middle-to-high frequency. Spatial spectra of the target patterns are given and their uniformity is evaluated.

Jiang Xiujuan; Li Jinghui; Li Huagang; Li Yang; Lin Zunqi

2011-09-20T23:59:59.000Z

392

Rotating fiber array molecular driver and molecular momentum transfer device constructed therewith  

DOE Patents (OSTI)

A rotating fiber array molecular driver is disclosed which includes a magnetically suspended and rotated central hub to which is attached a plurality of elongated fibers extending radially therefrom. The hub is rotated so as to straighten and axially extend the fibers and to provide the fibers with a tip speed which exceeds the average molecular velocity of fluid molecules entering between the fibers. Molecules colliding with the sides of the rotating fibers are accelerated to the tip speed of the fiber and given a momentum having a directional orientation within a relatively narrow distribution angle at a point radially outward of the hub, which is centered and peaks at the normal to the fiber sides in the direction of fiber rotation. The rotating fiber array may be used with other like fiber arrays or with other stationary structures to form molecular momentum transfer devices such as vacuum pumps, molecular separators, molecular coaters, or molecular reactors.

Milleron, Norman (1854 San Juan, Berkeley, CA 94707)

1983-01-01T23:59:59.000Z

393

Motor Vehicle Crash Fatalities and Injuries: An Analysis of the Relationship of Roadway, Driver, Vehicle Characteristics in Oregon  

E-Print Network (OSTI)

Motor Vehicle Crash Fatalities and Injuries: An Analysis of the Relationship of Roadway, Driver, Vehicle Characteristics in Oregon Motor Vehicle Crash Fatalities and Injuries: An Analysis,000 population among Oregon counties from 2000-2005 ranged from 6.64-211.17. In the event of a severe motor

Bertini, Robert L.

394

Brief paper: Output feedback strict passivity of discrete-time nonlinear systems and adaptive control system design with a PFC  

Science Conference Proceedings (OSTI)

In this paper, a passivity-based adaptive output feedback control for discrete-time nonlinear systems is considered. Output Feedback Strictly Passive (OFSP) conditions in order to design a stable adaptive output control system will be established. Further, ... Keywords: Adaptive control, Discrete nonlinear systems, Output feedback, Parallel feedforward compensator, Strict passivity

Ikuro Mizumoto; Satoshi Ohdaira; Zenta Iwai

2010-09-01T23:59:59.000Z

395

Dependence Balance Based Outer Bounds for Gaussian Networks with Cooperation and Feedback  

E-Print Network (OSTI)

We obtain new outer bounds on the capacity regions of the two-user multiple access channel with generalized feedback (MAC-GF) and the two-user interference channel with generalized feedback (IC-GF). These outer bounds are based on the idea of dependence balance which was proposed by Hekstra and Willems [1]. To illustrate the usefulness of our outer bounds, we investigate three different channel models. We first consider a Gaussian MAC with noisy feedback (MAC-NF), where transmitter $k$, $k=1,2$, receives a feedback $Y_{F_{k}}$, which is the channel output $Y$ corrupted with additive white Gaussian noise $Z_{k}$. As the feedback noise variances become large, one would expect the feedback to become useless, which is not reflected by the cut-set bound. We demonstrate that our outer bound improves upon the cut-set bound for all non-zero values of the feedback noise variances. Moreover, in the limit as $\\sigma_{Z_{k}}^{2}\\to \\infty$, $k=1,2$, our outer bound collapses to the capacity region of the Gaussian MAC wit...

Tandon, Ravi

2008-01-01T23:59:59.000Z

396

Entangling unitary gates on distant qubits with ancilla feedback  

E-Print Network (OSTI)

By using an ancilla qubit as a mediator, two distant qubits can undergo a non-local entangling unitary operation. This is desirable for when attempting to scale up or distribute quantum computation by combining fixed static local sets of qubits with ballistic mediators. Using a model driven by measurements on the ancilla, it is possible to generate a maximally entangling CZ gate while only having access to a less entangling gate between the pair qubits and the ancilla. However this results in a stochastic process of generating control phase rotation gates where the expected time for success does not correlate with the entangling power of the connection gate. We explore how one can use feedback into the preparation and measurement parameters of the ancilla to speed up the expected time to generate a CZ gate between a pair of separated qubits and to leverage stronger coupling strengths for faster times. Surprisingly, by choosing an appropriate strategy, control of a binary discrete parameter achieves comparable speed up to full continuous control of all degrees of freedom of the ancilla.

Kerem Halil Shah; Daniel K. L. Oi

2013-11-14T23:59:59.000Z

397

Inverse Compton X-ray signature of AGN feedback  

E-Print Network (OSTI)

Bright AGN frequently show ultra-fast outflows (UFOs) with outflow velocities vout ! 0.1c. These outflows may be the source of AGN feedback on their host galaxies sought by galaxy formation modellers. The exact effect of the outflows on the ambient galaxy gas strongly depends on whether the shocked UFOs cool rapidly or not. This in turn depends on whether the shocked electrons share the same temperature as ions (one temperature regime; 1T) or decouple (2T), as has been recently suggested. Here we calculate the Inverse Compton spectrum emitted by such shocks, finding a broad feature potentially detectable either in mid-to-high energy X-rays (1T case) or only in the soft X-rays (2T). We argue that current observations of AGN do not seem to show evidence for the 1T component, while the limits on the 2T emission are far weaker. This suggests that UFOs are in the energy-driven regime outside the central few pc, and must pump considerable amounts of not only momentum but also energy into the ambient gas. We encoura...

Bourne, Martin A

2013-01-01T23:59:59.000Z

398

Primary productivity control of simulated carbon cycle-climate feedbacks. Geophys  

E-Print Network (OSTI)

[1] Positive feedbacks between the terrestrial carbon cycle and climate represent an outstanding area of uncertainty in simulations of future climate change. Coupled climatecarbon cycle models have simulated widely divergent feedback magnitudes, and attempts to explain model differences have had only limited success. In this study, we demonstrate that the response of vegetation primary productivity to climate changes is a critical controlling factor in determining the strength of simulated carbon cycle-climate feedbacks. This conclusion sheds new light on coupled climate-carbon cycle model results, and highlights the need for improved model representation of photosynthesis processes so as to better constrain future projections of climate change. Citation: Matthews, H. D.,

H. Damon Matthews; Michael Eby; Andrew J. Weaver; Barbara J. Hawkins; M. Eby; A. J. Weaver; B. J. Hawkins

2005-01-01T23:59:59.000Z

399

Ion-driver fast ignition: Reducing heavy-ion fusion driver energy and cost, simplifying chamber design, target fab, tritium fueling and power conversion  

DOE Green Energy (OSTI)

Ion fast ignition, like laser fast ignition, can potentially reduce driver energy for high target gain by an order of magnitude, while reducing fuel capsule implosion velocity, convergence ratio, and required precisions in target fabrication and illumination symmetry, all of which should further improve and simplify IFE power plants. From fast-ignition target requirements, we determine requirements for ion beam acceleration, pulse-compression, and final focus for advanced accelerators that must be developed for much shorter pulses and higher voltage gradients than today's accelerators, to deliver the petawatt peak powers and small focal spots ({approx}100 {micro}m) required. Although such peak powers and small focal spots are available today with lasers, development of such advanced accelerators is motivated by the greater likely efficiency of deep ion penetration and deposition into pre-compressed 1000x liquid density DT cores. Ion ignitor beam parameters for acceleration, pulse compression, and final focus are estimated for two examples based on a Dielectric Wall Accelerator; (1) a small target with {rho}r {approx} 2 g/cm{sup 2} for a small demo/pilot plant producing {approx}40 MJ of fusion yield per target, and (2) a large target with {rho}r {approx} 10 g/cm{sup 2} producing {approx}1 GJ yield for multi-unit electricity/hydrogen plants, allowing internal T-breeding with low T/D ratios, >75 % of the total fusion yield captured for plasma direct conversion, and simple liquid-protected chambers with gravity clearing. Key enabling development needs for ion fast ignition are found to be (1) ''Close-coupled'' target designs for single-ended illumination of both compressor and ignitor beams; (2) Development of high gradient (>25 MV/m) linacs with high charge-state (q {approx} 26) ion sources for short ({approx}5 ns) accelerator output pulses; (3) Small mm-scale laser-driven plasma lens of {approx}10 MG fields to provide steep focusing angles close-in to the target (built-in as part of each target); (4) beam space charge-neutralization during both drift compression and final focus to target. Except for (1) and (2), these critical issues may be explored on existing heavy-ion storage ring accelerator facilities.

Logan, G.; Callahan-Miller, D.; Perkins, J.; Caporaso, G.; Tabak, M.; Moir, R.; Meier, W.; Bangerter, Roger; Lee, Ed

1998-04-01T23:59:59.000Z

400

Statistical Analyses of Land–Atmosphere Feedbacks and Their Possible Pitfalls  

Science Conference Proceedings (OSTI)

In some regions of the world, soil moisture has a typical memory for atmospheric processes and can also feed back to the latter. Thus, a better understanding of feedbacks between soil moisture and the atmosphere could provide promising ...

Boris Orlowsky; Sonia I. Seneviratne

2010-07-01T23:59:59.000Z

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


401

Feedback, power control, and beamforming : methods for situational aware wireless networks  

E-Print Network (OSTI)

in a frequency division duplex (FDD) system, or in a timea frequency division duplex (FDD) system. On the other hand,acquired by user feedback in a FDD system. The normalization

Huang, Yichao

2012-01-01T23:59:59.000Z

402

Geographical Distribution of Climate Feedbacks in the NCAR CCSM3.0  

Science Conference Proceedings (OSTI)

This study performs offline, partial radiative perturbation calculations to determine the geographical distributions of climate feedbacks contributing to the top-of-atmosphere (TOA) radiative energy budget. These radiative perturbations are ...

Patrick C. Taylor; Robert G. Ellingson; Ming Cai

2011-06-01T23:59:59.000Z

403

Observational and Model Estimates of Cloud Amount Feedback over the Indian and Pacific Oceans  

Science Conference Proceedings (OSTI)

Constraining intermodel spread in cloud feedback with observations is problematic because available cloud datasets are affected by spurious behavior in long-term variability. This problem is addressed by examining cloud amount in three independent ...

Katinka Bellomo; Amy C. Clement; Joel R. Norris; Brian J. Soden

2014-01-01T23:59:59.000Z

404

A Water Vapor-Energy Balance Model Designed for Sensitivity Testing of Climatic Feedback Processes  

Science Conference Proceedings (OSTI)

A zonal mean water vapor-energy balance (WEB) model is formulated to assess feedback interactions of the hydrologic cycle and lapse rate with the radiative fluxes, snow-dependent albedo and transport mechanisms. The WEB model is designed for ...

Robert G. Gallimore

1983-01-01T23:59:59.000Z

405

Observations of Climate Feedbacks over 2000–10 and Comparisons to Climate Models  

Science Conference Proceedings (OSTI)

Feedbacks in response to climate variations during the period 2000–10 have been calculated using reanalysis meteorological fields and top-of-atmosphere flux measurements. Over this period, the climate was stabilized by a strongly negative ...

A. E. Dessler

2013-01-01T23:59:59.000Z

406

Carbon–Concentration and Carbon–Climate Feedbacks in CMIP5 Earth System Models  

Science Conference Proceedings (OSTI)

The magnitude and evolution of parameters that characterize feedbacks in the coupled carbon–climate system are compared across nine Earth system models (ESMs). The analysis is based on results from biogeochemically, radiatively, and fully coupled ...

Vivek K. Arora; George J. Boer; Pierre Friedlingstein; Michael Eby; Chris D. Jones; James R. Christian; Gordon Bonan; Laurent Bopp; Victor Brovkin; Patricia Cadule; Tomohiro Hajima; Tatiana Ilyina; Keith Lindsay; Jerry F. Tjiputra; Tongwen Wu

2013-08-01T23:59:59.000Z

407

A unified optimization framework for robust pseudo-relevance feedback algorithms  

Science Conference Proceedings (OSTI)

We present a flexible new optimization framework for finding effective, reliable pseudo-relevance feedback models that unifies existing complementary approaches in a principled way. The result is an algorithmic approach that not only brings together ... Keywords: optimization, query expansion

Joshua V. Dillon; Kevyn Collins-Thompson

2010-10-01T23:59:59.000Z

408

Using a Multiphysics Ensemble for Exploring Diversity in Cloud–Shortwave Feedback in GCMs  

Science Conference Proceedings (OSTI)

This study proposes a systematic approach to investigate cloud-radiative feedbacks to climate change induced by an increase of CO2 concentrations in global climate models (GCMs). Based on two versions of the Model for Interdisciplinary Research on ...

Masahiro Watanabe; Hideo Shiogama; Tokuta Yokohata; Youichi Kamae; Masakazu Yoshimori; Tomoo Ogura; James D. Annan; Julia C. Hargreaves; Seita Emori; Masahide Kimoto

2012-08-01T23:59:59.000Z

409

On the Surface-Convection Feedback during Drought Periods on the Canadian Prairies  

Science Conference Proceedings (OSTI)

Linkages between the terrestrial ecosystem and precipitation play a critical role in regulating regional weather and climate. These linkages can manifest themselves as positive or negative feedback loops, which may either favor or inhibit the ...

Julian C. Brimelow; John M. Hanesiak; William R. Burrows

2011-06-01T23:59:59.000Z

410

Efficient algorithms for outage minimization in parallel fading channels with limited feedback  

Science Conference Proceedings (OSTI)

In this paper, we address the optimal power allocation problem for minimizing the notion of information theoretic outage for an M parallel block-Rayleigh-fading channels using a finite rate power codebook (limited feedback). In contrast to the ...

YuanYuan He; Subhrakanti Dey

2009-09-01T23:59:59.000Z

411

Wind-evaporation feedback, angular momentum conservation, and the abrupt onset of monsoons  

E-Print Network (OSTI)

This thesis examines the mechanisms responsible for the abrupt onset of monsoon circulations, focusing on the role played by wind-evaporation feedback and its interaction with angular momentum conserving flow. The first ...

Boos, William R. (William Ronald), 1975-

2008-01-01T23:59:59.000Z

412

Granger Causality of Coupled Climate Processes: Ocean Feedback on the North Atlantic Oscillation  

Science Conference Proceedings (OSTI)

This study uses a Granger causality time series modeling approach to quantitatively diagnose the feedback of daily sea surface temperatures (SSTs) on daily values of the North Atlantic Oscillation (NAO) as simulated by a realistic coupled general ...

Timothy J. Mosedale; David B. Stephenson; Matthew Collins; Terence C. Mills

2006-04-01T23:59:59.000Z

413

Cloud-Resolving Simulation of Low-Cloud Feedback to an Increase in Sea Surface Temperature  

Science Conference Proceedings (OSTI)

This study investigates the physical mechanisms of the low cloud feedback through cloud-resolving simulations of cloud-radiative equilibrium response to an increase in sea surface temperature (SST). Six pairs of perturbed and control simulations ...

Kuan-Man Xu; Anning Cheng; Minghua Zhang

2010-03-01T23:59:59.000Z

414

Feedback | ScienceLab, Education Resources from the U.S. Department...  

Office of Scientific and Technical Information (OSTI)

Your Feedback Is Important Please let us know how we can improve ScienceLab. Your input will help make ScienceLab more useful to students like you. Please complete as much of the...

415

Estimates of the Water Vapor Climate Feedback during El Niño–Southern Oscillation  

Science Conference Proceedings (OSTI)

The strength of the water vapor feedback has been estimated by analyzing the changes in tropospheric specific humidity during El Niño–Southern Oscillation (ENSO) cycles. This analysis is done in climate models driven by observed sea surface ...

A. E. Dessler; S. Wong

2009-12-01T23:59:59.000Z

416

Pacific Warm Pool Temperature Regulation during TOGA COARE: Upper Ocean Feedback  

Science Conference Proceedings (OSTI)

The Hasselmann feedback model was applied to hindcast western Pacific warm pool sea surface temperatures (SST) with heat flux observations obtained near 2°S, 156°E from October 1992 to February 1993 during the Tropical Ocean Global Atmosphere ...

Gary S. E. Lagerloef; Roger Lukas; Robert A. Weller; Steven P. Anderson

1998-09-01T23:59:59.000Z

417

Uncertainties in CMIP5 climate projections due to carbon cycle feedbacks  

Science Conference Proceedings (OSTI)

In the context of Coupled Model Intercomparison Project phase 5, most climate simulations use prescribed atmospheric CO2 concentration and therefore do not interactively include the effect of carbon cycle feedbacks. However, the RCP8.5 scenario ...

Pierre Friedlingstein; Malte Meinshausen; Vivek K. Arora; Chris D. Jones; Alessandro Anav; Spencer K. Liddicoat; Reto Knutti

418

Internal Feedbacks from Monsoon–Midlatitude Interactions during Droughts in the Indian Summer Monsoon  

Science Conference Proceedings (OSTI)

Results from a 20-yr simulation of a high-resolution AGCM forced with climatological SST, along with simplified model experiments and supplementary data diagnostics, are used to investigate internal feedbacks arising from monsoon–midlatitude ...

R. Krishnan; Vinay Kumar; M. Sugi; J. Yoshimura

2009-03-01T23:59:59.000Z

419

Feedbacks of Vegetation on Summertime Climate Variability over the North American Grasslands. Part I: Statistical Analysis  

Science Conference Proceedings (OSTI)

Feedbacks of vegetation on summertime climate variability over the North American Grasslands are analyzed using the statistical technique of Granger causality. Results indicate that normalized difference vegetation index (NDVI) anomalies early in ...

Weile Wang; Bruce T. Anderson; Nathan Phillips; Robert K. Kaufmann; Christopher Potter; Ranga B. Myneni

2006-09-01T23:59:59.000Z

420

An Analysis of the Soil Moisture Feedback on Convective and Stratiform Precipitation  

Science Conference Proceedings (OSTI)

Land–atmosphere interactions in midlatitude continental regions are particularly active during the warm season. It is still unclear whether and under what circumstances these interactions may involve positive or negative feedbacks between soil ...

Lorenzo Alfieri; Pierluigi Claps; Paolo D’Odorico; Francesco Laio; Thomas M. Over

2008-04-01T23:59:59.000Z

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


421

Using Relative Humidity as a State Variable in Climate Feedback Analysis  

Science Conference Proceedings (OSTI)

An approach to climate change feedback analysis is described in which tropospheric relative humidity replaces specific humidity as the state variable that, along with the temperature structure, surface albedos, and clouds, controls the magnitude ...

Isaac M. Held; Karen M. Shell

2012-04-01T23:59:59.000Z

422

Detecting vegetation-precipitation feedbacks in mid-Holocene North Africa from two climate models  

SciTech Connect

Using two climate-vegetation model simulations from the Fast Ocean Atmosphere Model (FOAM) and the Community Climate System Model (CCSM, version 2), we investigate vegetation-precipitation feedbacks across North Africa during the mid-Holocene. From mid-Holocene snapshot runs of FOAM and CCSM2, we detect a negative feedback at the annual timescale with our statistical analysis. Using the Monte- Carlo bootstrap method, the annual negative feedback is further confirmed to be significant in both simulations. Additional analysis shows that this negative interaction is partially caused by the competition between evaporation and transpiration in North African grasslands. Furthermore, we find the feedbacks decrease with increasing timescales, and change signs from positive to negative at increasing timescales in FOAM. The proposed mechanism for this sign switch is associated with the different persistent timescales of upper and lower soil water contents, and their interactions with vegetation and atmospheric precipitation.

Wang, Yi; Notaro, Michael; Liu, Zhengyu; Gallimore, Robert; Levis, Samuel; Kutzbach, John E.

2008-03-31T23:59:59.000Z

423

The road to multi-dimensional magnetic levitation : realizing two-dimensional control in classical feedback  

E-Print Network (OSTI)

A stable multi-dimensional magnetic levitator was characterized and implemented. This thesis contains a full analysis of the feedback specifications, a short summary of the circuits used in the design of the setup, and ...

Hlebowitsh, Paul Gerardus

2012-01-01T23:59:59.000Z

424

Energy Balance Partitioning and Net Radiation Controls on Soil Moisture–Precipitation Feedbacks  

Science Conference Proceedings (OSTI)

A series of model runs using the University of Oklahoma’s Advanced Regional Prediction System (ARPS) were conducted to investigate the relative impacts of energy balance partitioning and net radiation on soil moisture–precipitation feedbacks in ...

Aubrey R. Jones; Nathaniel A. Brunsell

2009-01-01T23:59:59.000Z

425

Interannual Biases Induced by Freshwater Flux and Coupled Feedback in the Tropical Pacific  

Science Conference Proceedings (OSTI)

Freshwater flux (FWF) forcing–induced feedback has not been represented adequately in many coupled ocean–atmosphere models of the tropical Pacific. Previously, various approximations have been made in representing the FWF forcing in climate ...

Rong-Hua Zhang; Guihua Wang; Dake Chen; A. J. Busalacchi; E. C. Hackert

2010-05-01T23:59:59.000Z

426

Determining Longwave Forcing and Feedback Using Infrared Spectra and GNSS Radio Occultation  

Science Conference Proceedings (OSTI)

The authors investigate whether combining a data type derived from radio occultation (RO) with the infrared spectral data in an optimal detection method improves the quantification of longwave radiative forcing and feedback. Signals derived from ...

Yi Huang; Stephen S. Leroy; James G. Anderson

2010-11-01T23:59:59.000Z

427

Observed Feedback between Winter Sea Ice and the North Atlantic Oscillation  

Science Conference Proceedings (OSTI)

Feedback between the North Atlantic Oscillation (NAO) and winter sea ice variability is detected and quantified using approximately 30 years of observations, a vector autoregressive model (VAR), and testable definitions of Granger causality and ...

Courtenay Strong; Gudrun Magnusdottir; Hal Stern

2009-11-01T23:59:59.000Z

428

Inter-Operator Feedback in Data Stream Management Systems via Punctuation  

E-Print Network (OSTI)

query plan parameters based on collected statistics--a performance-improving feedback loop [3]. CEDR is a data stream and event processing system under development at Microsoft Research. CEDR's operators

Bertini, Robert L.

429

Computing and Partitioning Cloud Feedbacks Using Cloud Property Histograms. Part I: Cloud Radiative Kernels  

Science Conference Proceedings (OSTI)

This study proposes a novel technique for computing cloud feedbacks using histograms of cloud fraction as a joint function of cloud-top pressure (CTP) and optical depth (?). These histograms were generated by the International Satellite Cloud ...

Mark D. Zelinka; Stephen A. Klein; Dennis L. Hartmann

2012-06-01T23:59:59.000Z

430

Structural Stochastic Stability of a Simple Auto-Oscillatory Climatic Feedback System  

Science Conference Proceedings (OSTI)

Based on a more detailed model developed previously, governing possible feedbacks between sea ice extent (?), deep-ocean temperature (?), and atmospheric carbon dioxide, we have constructed a simple, deterministic, dynamical system for ? and ? ...

Barry Saltzman; Alfonso Sutera; Alan Evenson

1981-03-01T23:59:59.000Z

431

Dissociation between Striatal Regions while Learning to Categorize via Feedback and via Observation  

Science Conference Proceedings (OSTI)

Convergent evidence from functional imaging and from neuropsychological studies of basal ganglia disorders indicates that the striatum is involved in learning to categorize visual stimuli with feedback. However, it is unclear which cognitive process ...

Corinna M. Cincotta; Carol A. Seger

2007-02-01T23:59:59.000Z

432

Counterexamples to the Theory of Thermodynamics With Feedback Proposed By Sagawa and Ueda  

E-Print Network (OSTI)

We give some counterexamples to the theory of thermodynamics with feedback that has been proposed by Sagawa and Ueda. Our counterexamples are evidence that their theory, in its present form, is flawed.

Robert R. Tucci

2013-01-09T23:59:59.000Z

433

Distributed feedback control for an eulerian model of the national airspace system  

E-Print Network (OSTI)

This paper proposes an Eulerian model of traffic flows in the National Airspace System (NAS) and presents a distributed feedback control approach for managing the flows. The main contribution is the development of a model ...

Le Ny, Jerome

434

Stable control of distributed hysteretic systems using cellular broadcast stochastic feedback  

E-Print Network (OSTI)

This work develops a provably stable broadcast feedback approach to regulating the aggregate output of a collection of stochastically behaving cellular units with pronounced hysteresis. Similar to skeletal muscle, comprised ...

Wood, Levi Benjamin

435

Contributions of Different Cloud Types to Feedbacks and Rapid Adjustments in CMIP5  

Science Conference Proceedings (OSTI)

Using five climate model simulations of the response to an abrupt quadrupling of CO2, the authors perform the first simultaneous model intercomparison of cloud feedbacks and rapid radiative adjustments with cloud masking effects removed, ...

Mark D. Zelinka; Stephen A. Klein; Karl E. Taylor; Timothy Andrews; Mark J. Webb; Jonathan M. Gregory; Piers M. Forster

2013-07-01T23:59:59.000Z

436

User feedback on prototypes and its impact on the success of future products  

E-Print Network (OSTI)

A survey was conducted to review the literature that currently exists on the topic of user feedback received from prototypes. Special attention was paid to whether and how this customer interaction impacts the success of ...

Beyer, Alexandra M. (Alexandra Melanie)

2010-01-01T23:59:59.000Z

437

Radiative and Dynamical Feedbacks over the Equatorial Cold Tongue: Results from Nine Atmospheric GCMs  

Science Conference Proceedings (OSTI)

The equatorial Pacific is a region with strong negative feedbacks. Yet coupled general circulation models (GCMs) have exhibited a propensity to develop a significant SST bias in that region, suggesting an unrealistic sensitivity in the coupled ...

D.-Z. Sun; T. Zhang; C. Covey; S. A. Klein; W. D. Collins; J. J. Hack; J. T. Kiehl; G. A. Meehl; I. M. Held; M. Suarez

2006-08-01T23:59:59.000Z

438

Synthesis of quantized feedback control software for discrete time linear hybrid systems  

Science Conference Proceedings (OSTI)

We present an algorithm that given a Discrete Time Linear Hybrid System${\\cal H}$ returns a correct-by-construction software implementation K for a (near time optimal) robust quantized feedback controller for ${\\cal H}$ along with ...

Federico Mari; Igor Melatti; Ivano Salvo; Enrico Tronci

2010-07-01T23:59:59.000Z

439

May 21, 2011 - Getting Useful Real Time Feedback About Your Program Webinar (text version)  

NLE Websites -- All DOE Office Websites (Extended Search)

1, 2011 - Getting Useful Real Time Feedback About 1, 2011 - Getting Useful Real Time Feedback About Your Program Webinar (text version) Below is the text version of the Webinar titled "Getting Useful Real Time Feedback About Your Program" originally presented on May 21, 2011. (Please note: portions of the transcript below may be incomplete where indicated with an underlined placeholder space. Please refer to the webinar presentation recording and slides for additional information.) Operator: The broadcast is now starting. All attendees are listen only mode. Sargon de Jesus: Good afternoon. My name is Sargon de Jesus and I am with ERG, a contractor supporting the U.S. Department of Energy Better Buildings program. I wanna thank you for joining today's webinar titled "Getting useful real time feedback about your

440

Interannual Positive Feedbacks in a Simple Extratropical Air–Sea Coupling System  

Science Conference Proceedings (OSTI)

A simple theoretical analysis identified three possible interannual positive feedbacks in the extratropics: the upwelling mode, the SST-Sverdrup mode, and the SST-evaporation mode. The upwelling mode becomes unstable when the atmosphere responses ...

Zhengyu Liu

1993-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "look-ahead driver feedback" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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441

On the Utility of Antiprotons as Drivers for Inertial Confinement Fusion  

DOE Green Energy (OSTI)

By contrast to the large mass, complexity and recirculating power of conventional drivers for inertial confinement fusion (ICF), antiproton annihilation offers a specific energy of 90MJ/{micro}g and thus a unique form of energy packaging and delivery. In principle, antiproton drivers could provide a profound reduction in system mass for advanced space propulsion by ICF. We examine the physics underlying the use of antiprotons ({bar p}) to drive various classes of high-yield ICF targets by the methods of volumetric ignition, hotspot ignition and fast ignition. The useable fraction of annihilation deposition energy is determined for both {bar p}-driven ablative compression and {bar p}-driven fast ignition, in association with 0-D and 1-D target burn models. Thereby, we deduce scaling laws for the number of injected antiprotons required per capsule, together with timing and focal spot requirements. The kinetic energy of the injected antiproton beam required to penetrate to the desired annihilation point is always small relative to the deposited annihilation energy. We show that heavy metal seeding of the fuel and/or ablator is required to optimize local deposition of annihilation energy and determine that a minimum of {approx}3x10{sup 15} injected antiprotons will be required to achieve high yield (several hundred megajoules) in any target configuration. Target gains - i.e., fusion yields divided by the available p - {bar p} annihilation energy from the injected antiprotons (1.88GeV/{bar p}) - range from {approx}3 for volumetric ignition targets to {approx}600 for fast ignition targets. Antiproton-driven ICF is a speculative concept, and the handling of antiprotons and their required injection precision - temporally and spatially - will present significant technical challenges. The storage and manipulation of low-energy antiprotons, particularly in the form of antihydrogen, is a science in its infancy and a large scale-up of antiproton production over present supply methods would be required to embark on a serious R&D program for this application.

Perkins, L J; Orth, C D; Tabak, M

2003-10-20T23:59:59.000Z

442

Acoustic emission feedback control for control of boiling in a microwave oven  

DOE Patents (OSTI)

An acoustic emission based feedback system for controlling the boiling level of a liquid medium in a microwave oven is provided. The acoustic emissions from the medium correlated with surface boiling is used to generate a feedback control signal proportional to the level of boiling of the medium. This signal is applied to a power controller to automatically and continuoulsly vary the power applied to the oven to control the boiling at a selected level.

White, Terry L. (Oak Ridge, TN)

1991-01-01T23:59:59.000Z

443

Modification of {Delta}{sup Prime} by magnetic feedback and kinetic effects  

SciTech Connect

Two possible ways of modifying the linear tearing mode index, by active magnetic feedback and by drift kinetic effects of deeply trapped particles, are analytically investigated. Magnetic feedback schemes, studied in this work, are found generally stabilizing for {Delta}{sup Prime }. The drift kinetic effects from both thermal particles and hot ions tend to reduce the power of the large solution from the outer region. This generally leads to a destabilization of {Delta} Prime for the toroidal analytic equilibria considered here.

Liu Yueqiang; Hastie, R. J.; Hender, T. C. [Euratom/CCFE Fusion Association, Culham Science Centre, Abingdon OX14 3DB (United Kingdom)

2012-09-15T23:59:59.000Z

444

The Evolution of Climate Sensitivity and Climate Feedbacks in the Community Atmosphere Model  

E-Print Network (OSTI)

also be decomposed into SW and LW components (ASCF and ALCF, respectively). The radiative kernels used the albedo TABLE 2. Feedbacks (lX; W m22 K21 ), ALCF and ASCF cloud feedback and geff (K) from CAM4 and CAM5 SOM runs and Cess experiments as described in the text. Simulation la lTs lTp lLR lq ALCF ASCF geff

Gettelman, Andrew

445

Acoustic emission feedback control for control of boiling in a microwave oven  

DOE Patents (OSTI)

An acoustic emission based feedback system for controlling the boiling level of a liquid medium in a microwave oven is provided. The acoustic emissions from the medium correlated with surface boiling is used to generate a feedback control signal proportional to the level of boiling of the medium. This signal is applied to a power controller to automatically and continuously vary the power applied to the oven to control the boiling at a selected level. 2 figs.

White, T.L.

1990-05-02T23:59:59.000Z

446

Non-cooperative Feedback Rate Control Game for Channel State Information in Wireless Networks  

E-Print Network (OSTI)

It has been well recognized that channel state information (CSI) feedback is of great importance for dowlink transmissions of closed-loop wireless networks. However, the existing work typically researched the CSI feedback problem for each individual mobile station (MS), and thus, cannot efficiently model the interactions among self-interested mobile users in the network level. To this end, in this paper, we propose an alternative approach to investigate the CSI feedback rate control problem in the analytical setting of a game theoretic framework, in which a multiple-antenna base station (BS) communicates with a number of co-channel MSs through linear precoder. Specifically, we first present a non-cooperative feedback-rate control game (NFC), in which each MS selects the feedback rate to maximize its performance in a distributed way. To improve efficiency from a social optimum point of view, we then introduce pricing, called the non-cooperative feedback-rate control game with price (NFCP). The game utility is ...

Song, Lingyang; Zhang, Zhongshan; Jiao, Bingli

2011-01-01T23:59:59.000Z

447

Terrestrial biogeochemical feedbacks in the climate system: from past to future  

Science Conference Proceedings (OSTI)

The terrestrial biosphere plays a major role in the regulation of atmospheric composition, and hence climate, through multiple interlinked biogeochemical cycles (BGC). Ice-core and other palaeoenvironmental records show a fast response of vegetation cover and exchanges with the atmosphere to past climate change, although the phasing of these responses reflects spatial patterning and complex interactions between individual biospheric feedbacks. Modern observations show a similar responsiveness of terrestrial biogeochemical cycles to anthropogenically-forced climate changes and air pollution, with equally complex feedbacks. For future conditions, although carbon cycle-climate interactions have been a major focus, other BGC feedbacks could be as important in modulating climate changes. The additional radiative forcing from terrestrial BGC feedbacks other than those conventionally attributed to the carbon cycle is in the range of 0.6 to 1.6 Wm{sup -2}; all taken together we estimate a possible maximum of around 3 Wm{sup -2} towards the end of the 21st century. There are large uncertainties associated with these estimates but, given that the majority of BGC feedbacks result in a positive forcing because of the fundamental link between metabolic stimulation and increasing temperature, improved quantification of these feedbacks and their incorporation in earth system models is necessary in order to develop coherent plans to manage ecosystems for climate mitigation.

Arneth, A.; Harrison, S. P.; Zaehle, S.; Tsigaridis, K; Menon, S; Bartlein, P.J.; Feichter, J; Korhola, A; Kulmala, M; O'Donnell, D; Schurgers, G; Sorvari, S; Vesala, T

2010-01-05T23:59:59.000Z

448

Dual Delayed Feedback Provides Sensitivity and Robustness to the NF-kB Signaling Module  

E-Print Network (OSTI)

Many cellular stress-responsive signaling systems exhibit highly dynamic behavior with oscillatory features mediated by delayed negative feedback loops. What remains unclear is whether oscillatory behavior is the basis for a signaling code based on frequency modulation (FM) or whether the negative feedback control modules have evolved to fulfill other functional requirements. Here, we use experimentally calibrated computational models to interrogate the negative feedback loops that regulate the dynamic activity of the transcription factor NF-kB. Linear stability analysis of the model shows that oscillatory frequency is a hard-wired feature of the primary negative feedback loop and not a function of the stimulus, thus arguing against an FM signaling code. Instead, our modeling studies suggest that the two feedback loops may be tuned to provide for rapid activation and inactivation capabilities for transient input signals of a wide range of durations; by minimizing late phase oscillations response durations may be fine-tuned in a graded rather than quantized manner. Further, in the presence of molecular noise the dual delayed negative feedback system minimizes stochastic

Diane M. Longo; Jangir Selimkhanov; Jeffrey D. Kearns; Jeff Hasty; Er Hoffmann; Lev S. Tsimring

2013-01-01T23:59:59.000Z

449

Break-Even Cost for Residential Solar Water Heating in the United States: Key Drivers and Sensitivities  

NLE Websites -- All DOE Office Websites (Extended Search)

Break-even Cost for Residential Break-even Cost for Residential Solar Water Heating in the United States: Key Drivers and Sensitivities Hannah Cassard, Paul Denholm, and Sean Ong Technical Report NREL/TP-6A20-48986 February 2011 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Break-even Cost for Residential Solar Water Heating in the United States: Key Drivers and Sensitivities Hannah Cassard, Paul Denholm, and Sean Ong Prepared under Task No. SS10.2110 Technical Report

450

A real time status monitor for transistor bank driver power limit resistor in boost injection kicker power supply  

SciTech Connect

For years suffering of Booster Injection Kicker transistor bank driver regulator troubleshooting, a new real time monitor system has been developed. A simple and floating circuit has been designed and tested. This circuit monitor system can monitor the driver regulator power limit resistor status in real time and warn machine operator if the power limit resistor changes values. This paper will mainly introduce the power supply and the new designed monitoring system. This real time resistor monitor circuit shows a useful method to monitor some critical parts in the booster pulse power supply. After two years accelerator operation, it shows that this monitor works well. Previously, we spent a lot of time in booster machine trouble shooting. We will reinstall all 4 PCB into Euro Card Standard Chassis when the power supply system will be updated.

Mi, J.; Tan, Y.; Zhang, W.

2011-03-28T23:59:59.000Z

451

Low impedance z-pinch drivers without post-hole convolute current adders.  

SciTech Connect

Present-day pulsed-power systems operating in the terawatt regime typically use post-hole convolute current adders to operate at sufficiently low impedance. These adders necessarily involve magnetic nulls that connect the positive and negative electrodes. The resultant loss of magnetic insulation results in electron losses in the vicinity of the nulls that can severely limit the efficiency of the delivery of the system's energy to a load. In this report, we describe an alternate transformer-based approach to obtaining low impedance. The transformer consists of coils whose windings are in parallel rather than in series, and does not suffer from the presence of magnetic nulls. By varying the pitch of the coils windings, the current multiplication ratio can be varied, leading to a more versatile driver. The coupling efficiency of the transformer, its behavior in the presence of electron flow, and its mechanical strength are issues that need to be addressed to evaluate the potential of transformer-based current multiplication as a viable alternative to conventional current adder technology.

Savage, Mark Edward; Seidel, David Bruce; Mendel, Clifford Will, Jr.

2009-09-01T23:59:59.000Z

452

The high current, fast, 100ns, Linear Transformer Driver (LTD) developmental project at Sandia National Laboratories.  

Science Conference Proceedings (OSTI)

Sandia National Laboratories, Albuquerque, N.M., USA, in collaboration with the High Current Electronic Institute (HCEI), Tomsk, Russia, is developing a new paradigm in pulsed power technology: the Linear Transformer Driver (LTD) technology. This technological approach can provide very compact devices that can deliver very fast high current and high voltage pulses straight out of the cavity with out any complicated pulse forming and pulse compression network. Through multistage inductively insulated voltage adders, the output pulse, increased in voltage amplitude, can be applied directly to the load. The load may be a vacuum electron diode, a z-pinch wire array, a gas puff, a liner, an isentropic compression load (ICE) to study material behavior under very high magnetic fields, or a fusion energy (IFE) target. This is because the output pulse rise time and width can be easily tailored to the specific application needs. In this paper we briefly summarize the developmental work done in Sandia and HCEI during the last few years, and describe our new MYKONOS Sandia High Current LTD Laboratory.

Ward, Kevin S.; Long, Finis W.; Sinebryukhov, Vadim A. (High Current Electronic Institute (HCEI), Tomsk, Russia); Kim, Alexandre A. (High Current Electronic Institute (HCEI), Tomsk, RUSSIA); Wakeland, Peter Eric (Ktech Corporation, Albuquerque, NM); McKee, G. Randall; Woodworth, Joseph Ray; McDaniel, Dillon Heirman; Fowler, William E.; Mazarakis, Michael Gerrassimos; Porter, John Larry, Jr.; Struve, Kenneth William; Stygar, William A.; LeChien, Keith R.; Matzen, Maurice Keith

2010-04-01T23:59:59.000Z

453

Beam dynamics studies in the driver LINAC pre-Stripper section of the RIA facility.  

SciTech Connect

The RIA facility driver linac consists of about 400 superconducting (SC) independently phased rf cavities. The linac is designed to accelerate simultaneously several-charge-state beams to generate as much as 400 kW of uranium beam power. The linac beam dynamics is most sensitive to the focusing and accelerating-structure parameters of the prestripper section, where the uranium beam is accelerated from 0.17 keV/u to 9.4 MeV/u. This section is designed to accept and accelerate 2 charge states (28 and 29) of uranium beam from an ECR ion source. The prestripper section must be designed to minimize the beam emittance distortion of this two-charge-state beam. In particular, the inter-cryostat spaces must be minimized and beam parameters near transitions of the accelerating and focusing lattices must be matched carefully. Several sources of possible effective emittance growth are considered in the design of the prestripper section and a tolerance budget is established. Numerical beam dynamics studies include realistic electric and magnetic 3-dimensional field distributions in the SC rf cavities and SC solenoids. Error effects in the longitudinal beam parameters are studied.

Lessner, E. S.; Ostroumov, P. N.

2003-07-10T23:59:59.000Z

454

DSP-Based Sensor-less Permanent Magnet Synchronous Motor Driver With Quasi-Sine PWM for Air-Conditioner Rotary Compressor.  

E-Print Network (OSTI)

??This thesis presented a sensor-less permanent magnet synchronous motor (PMSM) driver for controlling air-conditioner rotary compressor speed. In this thesis, a quasi-sine pulse-width modulation (PWM)… (more)

Liu, Li-hsiang

2012-01-01T23:59:59.000Z

455

Assessing Energy Impact of Plug-In Hybrid Electric Vehicles: Significance of Daily Distance Variation over Time and Among Drivers  

Science Conference Proceedings (OSTI)

Accurate assessment of the impact of plug-in hybrid electric vehicles (PHEVs) on petroleum and electricity consumption is a necessary step toward effective policies. Variations in daily vehicle miles traveled (VMT) over time and among drivers affect PHEV energy impact, but the significance is not well understood. This paper uses a graphical illustration, a mathematical derivation, and an empirical study to examine the cause and significance of such an effect. The first two methods reveal that ignoring daily variation in VMT always causes underestimation of petroleum consumption and overestimation of electricity consumption by PHEVs; both biases increase as the assumed PHEV charge-depleting (CD) range moves closer to the average daily VMT. The empirical analysis based on national travel survey data shows that the assumption of uniform daily VMT over time and among drivers causes nearly 68% underestimation of expected petroleum use and nearly 48% overestimation of expected electricity use by PHEVs with a 40-mi CD range (PHEV40s). Also for PHEV40s, consideration of daily variation in VMT over time but not among drivers similar to the way the utility factor curve is derived in SAE Standard SAE J2841 causes underestimation of expected petroleum use by more than 24% and overestimation of expected electricity use by about 17%. Underestimation of petroleum use and overestimation of electricity use increase with larger-battery PHEVs.

Lin, Zhenhong [ORNL; Greene, David L [ORNL

2012-01-01T23:59:59.000Z

456

Analysis of a Cyclotron Based 400 MeV/u Driver System for a Radioactive Beam Facility  

E-Print Network (OSTI)

The creation of intense radioactive beams requires intense and energetic primary beams. A task force analysis of this subject recommended an acceleration system capable of 400 MeV/u uranium at 1 particle uA as an appropriate driver for such a facility. The driver system should be capable of accelerating lighter ions at higher intensity such that a constant final beam power (~100kW) is maintained. This document is a more detailed follow on to the previous analysis of such a system incorporating a cyclotron. The proposed driver pre-acceleration system consists of an ion source, radio frequency quadrupole, and linac chain capable of producing a final energy of 30 MeV/u and a charge (Q) to mass (A) of Q/A ~1/3. This acceleration system would be followed by a Separated Sector Cyclotron with a final output energy of 400 MeV/u. This system provides a more cost-effective solution in terms of initial capital investment as well as of operation compared to a fully linac system with the same primary beam output parameters.

F. Marti; R. C. York; H. Blosser; M. M. Gordon; D. Gorelov; T. Grimm; D. Johnson; P. Miller; E. Pozdeyev; J. Vincent; X. Wu; A. Zeller

1999-08-20T23:59:59.000Z

457

Disposition of Unirradiated Sodium Bonded EBR-II Driver Fuel Elements and HEU Scrap: Work Performed for FY 2007  

SciTech Connect

Specific surplus high enriched uranium (HEU) materials at the Idaho National Laboratory (INL) Materials and Fuels Complex (MFC) will be transferred to a designated off-site receiving facility. The DOE High Enriched Uranium Disposition Program Office (HDPO) will determine which materials, if any, will be prepared and transferred to an off-site facility for processing and eventual fabrication of fuel for nuclear reactors. These surplus HEU materials include approximately 7200 kg unirradiated sodium-bonded EBR-II driver fuel elements, and nearly 800 kg of HEU casting scrap from the process which formed various sodium-bonded fuels (including the EBR-II driver elements). Before the driver fuel can be packaged for shipment, the fuel elements will require removal of the sodium bond. The HEU scrap will also require repackaging in preparation for off-site transport. Preliminary work on this task was authorized by BWXT Y-12 on Nov 6, 2006 and performed in three areas: • Facility Modifications • Safety Documentation • Project Management

Karen A Moore

2007-04-01T23:59:59.000Z

458

Experimental evaluation of a negative ion source for a heavy ionfusion negative ion driver  

DOE Green Energy (OSTI)

Negative halogen ions have recently been proposed as a possible alternative to positive ions for heavy ion fusion drivers because electron accumulation would not be a problem in the accelerator, and if desired, the beams could be photodetached to neutrals [1,2,3]. To test the ability to make suitable quality beams, an experiment was conducted at Lawrence Berkeley National Laboratory using chlorine in an RF-driven ion source. Without introducing any cesium (which is required to enhance negative ion production in hydrogen ion sources) a negative chlorine current density of 45 mA/cm{sup 2} was obtained under the same conditions that gave 57 mA/cm{sup 2} of positive chlorine, suggesting the presence of nearly as many negative ions as positive ions in the plasma near the extraction plane. The negative ion spectrum was 99.5% atomic chlorine ions, with only 0.5% molecular chlorine, and essentially no impurities. Although this experiment did not incorporate the type of electron suppression technology that is used in negative hydrogen beam extraction, the ratio of co-extracted electrons to Cl{sup -} was as low as 7 to 1, many times lower than the ratio of their mobilities, suggesting that few electrons are present in the near-extractor plasma. This, along with the near-equivalence of the positive and negative ion currents, suggests that the plasma in this region was mostly an ion-ion plasma. The negative chlorine current density was relatively insensitive to pressure, and scaled linearly with RF power. If this linear scaling continues to hold at higher RF powers, it should permit current densities of 100 mA/cm{sup 2}, sufficient for present heavy ion fusion injector concepts. The effective ion temperatures of the positive and negative ions appeared to be similar and relatively low for a plasma source.

Grisham, L.R.; Hahto, S.K.; Hahto, S.T.; Kwan, J.W.; Leung, K.N.

2005-01-18T23:59:59.000Z

459

Energy for 500 Million Homes: Drivers and Outlook for Residential Energy Consumption in China  

SciTech Connect

China's rapid economic expansion has propelled it to the rank of the largest energy consuming nation in the world, with energy demand growth continuing at a pace commensurate with its economic growth. The urban population is expected to grow by 20 million every year, accompanied by construction of 2 billion square meters of buildings every year through 2020. Thus residential energy use is very likely to continue its very rapid growth. Understanding the underlying drivers of this growth helps to identify the key areas to analyze energy efficiency potential, appropriate policies to reduce energy use, as well as to understand future energy in the building sector. This paper provides a detailed, bottom-up analysis of residential building energy consumption in China using data from a wide variety of sources and a modelling effort that relies on a very detailed characterization of China's energy demand. It assesses the current energy situation with consideration of end use, intensity, and efficiency etc, and forecast the future outlook for the critical period extending to 2020, based on assumptions of likely patterns of economic activity, availability of energy services, technology improvement and energy intensities. From this analysis, we can conclude that Chinese residential energy consumption will more than double by 2020, from 6.6 EJ in 2000 to 15.9 EJ in 2020. This increase will be driven primarily by urbanization, in combination with increases in living standards. In the urban and higher income Chinese households of the future, most major appliances will be common, and heated and cooled areas will grow on average. These shifts will offset the relatively modest efficiency gains expected according to current government plans and policies already in place. Therefore, levelling and reduction of growth in residential energy demand in China will require a new set of more aggressive efficiency policies.

Zhou, Nan; McNeil, Michael A.; Levine, Mark

2009-06-01T23:59:59.000Z

460

Experimental Evaluation of a Negative Ion Source for a Heavy Ion Fusion Negative Ion Driver  

DOE Green Energy (OSTI)

Negative halogen ions have recently been proposed as a possible alternative to positive ions for heavy ion fusion drivers because electron accumulation would not be a problem in the accelerator, and if desired, the beams could be photo-detached to neutrals. To test the ability to make suitable quality beams, an experiment was conducted at Lawrence Berkeley National Laboratory using chlorine in an RF-driven ion source. Without introducing any cesium (which is required to enhance negative ion production in hydrogen ion sources) a negative chlorine current density of 45 mA/cm{sup 2} was obtained under the same conditions that gave 57 45 mA/cm{sup 2} of positive chlorine, suggesting the presence of nearly as many negative ions as positive ions in the plasma near the extraction plane. The negative ion spectrum was 99.5% atomic chlorine ions, with only 0.5% molecular chlorine, and essentially no impurities. Although this experiment did not incorporate the type of electron suppression technology that i s used in negative hydrogen beam extraction, the ratio of co-extracted electrons to Cl{sup -} was as low as 7 to 1, many times lower than the ratio of their mobilities, suggesting that few electrons are present in the near-extractor plasma. This, along with the near-equivalence of the positive and negative ion currents, suggests that the plasma in this region was mostly an ion-ion plasma. The negative chlorine current density was relatively insensitive to pressure, and scaled linearly with RF power. If this linear scaling continues to hold at higher RF powers, it should permit current densities of 100 45 mA/cm{sup 2}, sufficient for present heavy ion fusion injector concepts. The effective ion temperatures of the positive and negative ions appeared to be similar and relatively low for a plasma source.

L.R. Grisham, S.K. Hahto, S.T. Hahto, J.W. Kwan, and K.N. Leung

2004-06-16T23:59:59.000Z

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


461

Energy for 500 Million Homes: Drivers and Outlook for Residential Energy Consumption in China  

SciTech Connect

China's rapid economic expansion has propelled it to the rank of the largest energy consuming nation in the world, with energy demand growth continuing at a pace commensurate with its economic growth. The urban population is expected to grow by 20 million every year, accompanied by construction of 2 billion square meters of buildings every year through 2020. Thus residential energy use is very likely to continue its very rapid growth. Understanding the underlying drivers of this growth helps to identify the key areas to analyze energy efficiency potential, appropriate policies to reduce energy use, as well as to understand future energy in the building sector. This paper provides a detailed, bottom-up analysis of residential building energy consumption in China using data from a wide variety of sources and a modelling effort that relies on a very detailed characterization of China's energy demand. It assesses the current energy situation with consideration of end use, intensity, and efficiency etc, and forecast the future outlook for the critical period extending to 2020, based on assumptions of likely patterns of economic activity, availability of energy services, technology improvement and energy intensities. From this analysis, we can conclude that Chinese residential energy consumption will more than double by 2020, from 6.6 EJ in 2000 to 15.9 EJ in 2020. This increase will be driven primarily by urbanization, in combination with increases in living standards. In the urban and higher income Chinese households of the future, most major appliances will be common, and heated and cooled areas will grow on average. These shifts will offset the relatively modest efficiency gains expected according to current government plans and policies already in place. Therefore, levelling and reduction of growth in residential energy demand in China will require a new set of more aggressive efficiency policies.

Zhou, Nan; McNeil, Michael A.; Levine, Mark

2009-06-01T23:59:59.000Z

462

Spatial homogenization of thermal feedback regions in Monte Carlo reactor calculations  

SciTech Connect

An integrated thermal-hydraulic feedback module has previously been developed for the Monte Carlo transport solver, MC21. The module incorporates a flexible input format that allows the user to describe heat transfer and coolant flow paths within the geometric model at any level of spatial detail desired. The effect that the varying levels of spatial homogenization of thermal regions has on the accuracy of the Monte Carlo simulations is examined in this study. Six thermal feedback mappings are constructed from the same geometric model of the Calvert Cliffs core. The spatial homogenization of the thermal regions is varied, giving each scheme a different level of detail, and the adequacy of the spatial homogenization is determined based on the eigenvalue produced by each Monte Carlo calculation. The purpose of these numerical experiments is to determine the level of detail necessarily to accurately capture the thermal feedback effect on reactivity. Several different core models are considered: axial-flow only, axial and lateral flow, asymmetry due to control rod insertion, and fuel heating (temperature -dependent cross sections). The thermal results generated by the MC21 thermal feedback module are consistent with expectations. Based upon the numerical experiments conducted it is concluded that the amount of spatial detail necessary to accurately capture the feedback effect on reactivity is relatively small. Homogenization at the assembly level for the Calvert Cliffs PWR model results in a similar power defect to that calculated with individual pin-cells modeled as explicit thermal regions. (authors)

Hanna, B. R.; Gill, D. F.; Griesheimer, D. P. [Bertis Atomic Power Laboratory, Bechtel Marine Propulsion Corporation, P.O. Box 79, West Mifflin, PA 15122 (United States)

2012-07-01T23:59:59.000Z

463

Outer Bounds for Multiple-Access Channels With Feedback Using Dependence Balance  

E-Print Network (OSTI)

We use the idea of dependence balance to obtain a new outer bound for the capacity region of the discrete memoryless multiple-access channel with noiseless feedback (MAC-FB). We consider a binary additive noisy MAC-FB whose feedback capacity is not known. The binary additive noisy MAC considered in this paper can be viewed as the discrete counterpart of the Gaussian MAC-FB. Ozarow established that the capacity region of the two-user Gaussian MAC-FB is given by the cut-set bound. Our result shows that for the discrete version of the channel considered by Ozarow, this is not the case. Direct evaluation of our outer bound is intractable due to an involved auxiliary random variable whose large cardinality prohibits an exhaustive search. We overcome this difficulty by using a composite function and its properties to explicitly evaluate our outer bound. Our outer bound is strictly less than the cut-set bound at all points on the capacity region where feedback increases capacity. In addition, we explicitly evaluate the Cover–Leung achievable rate region for the binary additive noisy MAC-FB in consideration. Furthermore, using the tools developed for the evaluation of our outer bound, we also explicitly characterize the boundary of the feedback capacity region of the binary erasure MAC, for which the Cover–Leung achievable rate region is known to be tight. This last result confirms that the feedback strategies developed by Kramer for the binary erasure MAC are capacity achieving.

Ravi Tandon; Sennur Ulukus

2009-01-01T23:59:59.000Z

464

On the Symmetric Feedback Capacity of the K-user Cyclic Z-Interference Channel  

E-Print Network (OSTI)

The K-user cyclic Z-interference channel models a situation in which the kth transmitter causes interference only to the (k-1)th receiver in a cyclic manner, i.e., the first transmitter causes interference only to the Kth receiver. The impact of noiseless feedback on the capacity of this channel is studied by focusing on the Gaussian cyclic Z-interference channel. To this end, the symmetric feedback capacity of the linear shift deterministic cyclic Z-interference channel (LD-CZIC) is completely characterized for all interference regimes. Using insights from the linear deterministic channel model, the symmetric feedback capacity of the Gaussian cyclic Z-interference channel is characterized up to within a constant number of bits. As a byproduct of the constant gap result, the symmetric degrees of freedom with feedback for the Gaussian cyclic Z-interference channel are also characterized. These results highlight that the symmetric feedback capacities for both linear and Gaussian channel models are in general fu...

Tandon, Ravi; Poor, H Vincent

2011-01-01T23:59:59.000Z

465

Global climate feedbacks: Conclusions and recommendations of the June 1990 BNL workshop  

SciTech Connect

The issue of global change initiated by increases in the concentrations of CO{sub 2} and other greenhouse gases is a scientific issue with major policy implications. The best means to examine the response of the Earth's climate to prospective perturbations in radiative forcing caused by such changes, and to other industrial activities, is modeling, specifically by means of general circulation models (GCMs) of the Earth's atmosphere and of the coupled atmosphere-ocean system. The purpose of this workshop was to identify the feedbacks inherent in the Earth's climate that actually or potentially govern the system's response to perturbations, to identify gaps in knowledge that preclude the accurate representation of these feedbacks in models, and to identify research required to represent these feedbacks accurately in models.

Manowitz, B.

1990-08-01T23:59:59.000Z

466

Cooling and squeezing the fluctuations of a nanomechanical beam by indirect quantum feedback control  

E-Print Network (OSTI)

We study cooling and squeezing the fluctuations of a nanomechanical beam using quantum feedback control. In our model, the nanomechanical beam is coupled to a transmission line resonator via a superconducting quantum interference device (SQUID). The leakage of the electromagnetic field from the transmission line resonator is measured using homodyne detection. This measured signal is then used to design a quantum-feedback-control signal to drive the electromagnetic field in the transmission line resonator. Although the control is imposed on the transmission line resonator, this quantum-feedback-control signal indirectly affects the thermal motion of the nanomechanical beam via the inductive beam-resonator coupling, making it possible to cool and squeeze the fluctuations of the beam, allowing it to approach the standard quantum limit.

Jing Zhang; Yu-xi Liu; Franco Nori

2009-02-15T23:59:59.000Z

467

Variable-delay feedback control of unstable steady states in retarded time-delayed systems  

E-Print Network (OSTI)

We study the stability of unstable steady states in scalar retarded time-delayed systems subjected to a variable-delay feedback control. The important aspect of such a control problem is that time-delayed systems are already infinite-dimensional before the delayed feedback control is turned on. When the frequency of the modulation is large compared to the system's dynamics, the analytic approach consists of relating the stability properties of the resulting variable-delay system with those of an analogous distributed delay system. Otherwise, the stability domains are obtained by a numerical integration of the linearized variable-delay system. The analysis shows that the control domains are significantly larger than those in the usual time-delayed feedback control, and that the complexity of the domain structure depends on the form and the frequency of the delay modulation.

Aleksandar Gjurchinovski; Viktor Urumov

2010-07-06T23:59:59.000Z

468

Feedback Control of Nonlinear Dissipative Systems by Finite Determining Parameters - A Reaction-diffusion Paradigm  

E-Print Network (OSTI)

We introduce here a simple finite-dimensional feedback control scheme for stabilizing solutions of infinite-dimensional dissipative evolution equations, such as reaction-diffusion systems, the Navier-Stokes equations and the Kuramoto-Sivashinsky equation. The designed feedback control scheme takes advantage of the fact that such systems possess finite number of determining parameters (degrees of freedom), namely, finite number of determining Fourier modes, determining nodes, and determining interpolants and projections. In particular, the feedback control scheme uses finitely many of such observables and controllers. This observation is of a particular interest since it implies that our approach has far more reaching applications, in particular, in data assimilation. Moreover, we emphasize that our scheme treats all kinds of the determining projections, as well as, the various dissipative equations with one unified approach. However, for the sake of simplicity we demonstrate our approach in this paper to a one-dimensional reaction-diffusion equation paradigm.

Abderrahim Azouani; Edriss S. Titi

2013-01-29T23:59:59.000Z

469

Real-time synchronization feedbacks for single-atom frequency standards  

E-Print Network (OSTI)

Simple feedback loops, inspired from extremum-seeking, are proposed to lock a probe-frequency to the transition frequency of a single quantum system following quantum Monte-Carlo trajectories. Two specific quantum systems are addressed, a 2-level one and a 3-level one that appears in coherence population trapping and optical pumping. For both systems, the feedback algorithm is shown to be convergent in the following sense: the probe frequency converges in average towards the system-transition one and its standard deviation can be made arbitrarily small. Closed-loop simulations illustrate robustness versus jump-detection efficiency and modeling errors.

Mazyar Mirrahimi; Pierre Rouchon

2008-06-09T23:59:59.000Z

470

Development of a transient three-dimensional neutron transport code with feedback  

Science Conference Proceedings (OSTI)

A new code is being developed at the Y-12 Plant for solving the time-dependent, three-dimensional Boltzmann transport model with feedback. The new code, PADK, uses the quasi-static method in its adiabatic form and is to be utilized to analyze hypothetical criticality accidents. A description of the code along with preliminary results without feedback are presented in this paper. The code is applied to 2 standard benchmark problems and the results are compared to another method. Also, the code is used to model the GODIVA reactor. Further work needed to be completed is described.

Waddell, M.W. Jr.

1994-07-19T23:59:59.000Z

471

Simulation and analysis of rf feedback systems on the SLC damping rings  

SciTech Connect

The rf system of the SLC Damping Rings has evolved since tighter tolerances on beam stability are encountered as beam intensities are increased. There are now many feedback systems controlling the phase and amplitude of the rf, the phase of the beam, and the tune of the cavity. The bandwidths of the feedback loops range from several MHz to compensate for beam loading to a few Hz for the cavity tuners. To improve our understanding of the interaction of these loops and verify the expected behavior, we have simulated their behavior using computer models. A description of the models and the first results are discussed.

Minty, M.; Himel, T.; Krejcik, P.; Siemann, R.H.; Tighe, R.

1993-09-01T23:59:59.000Z

472

Unconditional quantum-noise suppression via measurement-based quantum feedback  

E-Print Network (OSTI)

We demonstrate unconditional quantum-noise suppression in a collective spin system via feedback control based on quantum non-demolition measurement (QNDM). We perform shot-noise limited collective spin measurements on an ensemble of $3.7\\times 10^5$ laser-cooled 171Yb atoms in their spin-1/2 ground states. Correlation between two sequential QNDMs indicates $-0.80^{+0.11}_{-0.12}\\,\\mathrm{dB}$ quantum noise suppression in a conditional manner. Our feedback control successfully converts the conditional quantum-noise suppression into the unconditional one without significant loss of the noise

Ryotaro Inoue; Shin-Ichi-Ro Tanaka; Ryo Namiki; Takahiro Sagawa; Yoshiro Takahashi

2013-01-06T23:59:59.000Z

473

High-temperature dynamic hohlraums on the pulsed power driver {ital Z}  

Science Conference Proceedings (OSTI)

In the concept of the dynamic hohlraum an imploding Z pinch is optically thick to its own radiation. Radiation may be trapped inside the pinch to give a radiation temperature inside the pinch greater than that outside the pinch. The radiation is typically produced by colliding an outer Z-pinch liner onto an inner liner. The collision generates a strongly radiating shock, and the radiation is trapped by the outer liner. As the implosion continues after the collision, the radiation temperature may continue to increase due to ongoing PdV (pressure times change in volume) work done by the implosion. In principal, the radiation temperature may increase to the point at which the outer liner burns through, becomes optically thin, and no longer traps the radiation. One application of the dynamic hohlraum is to drive an ICF (inertial confinement fusion) pellet with the trapped radiation field. Members of the dynamic hohlraum team at Sandia National Labs have used the pulsed power driver {ital Z} (20 MA, 100 ns) to create a dynamic hohlraum with temperature linearly ramping from 100 to 180 eV over 5 ns. On this shot zp214 a nested tungsten wire array of 4 and 2 cm diam with masses of 2 and 1 mg imploded onto a 2.5 mg plastic annulus at 5 mm diam. The current return can on this shot was slotted. It is likely the radiation temperature may be increased to over 200 eV by stabilizing the pinch with a solid current return can. A current return can with nine slots imprints nine filaments onto the imploding pinch. This degrades the optical trapping and the quality of the liner collision. A 1.6 mm diam capsule situated inside this dynamic hohlraum of zp214 would see 15 kJ of radiation impinging on its surface before the pinch itself collapses to a 1.6 mm diam. Dynamic hohlraum shots including pellets were scheduled to take place on {ital Z} in September of 1998. {copyright} {ital 1999 American Institute of Physics.}

Nash, T.J.; Derzon, M.S.; Chandler, G.A.; Leeper, R.; Fehl, D.; Lash, J.; Ruiz, C.; Cooper, G.; Seaman, J.F.; McGurn, J.; Lazier, S.; Torres, J.; Jobe, D.; Gilliland, T.; Hurst, M.; Mock, R.; Ryan, P.; Nielsen, D.; Armijo, J.; McKenney, J.; Hawn, R.; Hebron, D. [Sandia National Laboratory, Albuquerque, New Mexico 87123 (United States)] [Sandia National Laboratory, Albuquerque, New Mexico 87123 (United States); MacFarlane, J.J. [University of Wisconsin, Madison, Wisconsin 53705 (United States)] [University of Wisconsin, Madison, Wisconsin 53705 (United States); Petersen, D.; Bowers, R.; Matuska, W. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Ryutov, D.D. [Lawrence Livermore Laboratory, Livermore, California 94550 (United States)] [Lawrence Livermore Laboratory, Livermore, California 94550 (United States)

1999-05-01T23:59:59.000Z

474

A framework for a feedback process to analyze and personalize a document vector space in a feature extraction model  

Science Conference Proceedings (OSTI)

In this paper, we present a framework for a feedback process to implement a highly accurate document retrieval system. In the system, a document vector space is created dynamically to implement retrieval processing. The retrieval accuracy of the system ... Keywords: Feature extraction, Feedback method, Information retrieval, Semantic search, Vector space model

Kosuke Takano; Xing Chen; Keisuke Masuda

2009-09-01T23:59:59.000Z

475

Analysis of a PM DC motor model for application in feedback design for electric-powered mobility vehicles  

Science Conference Proceedings (OSTI)

Accurate modelling of Permanent Magnet (PM) DC motors is a prerequisite for expedient feedback design of electric-powered mobility vehicles. This paper identifies the parameters in the ideal equations for PM DC motors and considers the methods ... Keywords: electric-powered mobility vehicles, feedback design, frictional torque, model accuracy, modelling, permanent magnet DC motors models

Patrick Wolm; XiaoQi Chen; J. Geoffrey Chase; Warren Pettigrew; Christopher E. Hann

2010-08-01T23:59:59.000Z

476

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/, Simulated Climate Sensitivity, Feedbacks and Mean1  

E-Print Network (OSTI)

mented into shortwave (SW) feedbacks (ASCF: Figure 1a) and longwave (LW) feedbacks152 (ALCF: Figure 1b SENSITIVITY slope when regressed against climate sensitivity than ALCF indicates clouds with both162 longwave165 listed in Table 3. ALCF has the highest correlation, and is of opposite sign to the ASCF166

Gettelman, Andrew

477

Brief Nonlinear stabilization of a thermal convection loop by state feedback  

Science Conference Proceedings (OSTI)

A nonlinear feedback control law that achieves global asymptotic stabilization of a 2D thermal convection loop (widely known for its ''Lorenz system'' approximation) is presented. The loop consists of viscous Newtonian fluid contained in between two ... Keywords: Backstepping, Boundary control, Convection loop

Dejan M. BošKovi?; Miroslav Krsti?

2001-12-01T23:59:59.000Z

478

The Main Steam Temperature Cascade Control of High Order Differential of Feedback Controller  

Science Conference Proceedings (OSTI)

The main steam temperature of boiler is a big time-lag signal, and the great change of its dynamic characteristics occurs with the load change. In addition, the main steam temperature control is particularly significant for the safety and economic operation ... Keywords: main steam temperature, high order differentiator, high order differential feedback controller, cascade control

Xue Wei; Mu Jingjing; Jia Hongyan; Ye Fei

2010-10-01T23:59:59.000Z

479

Reconceptualizing and expanding the positive feedback network effects model: A case study  

Science Conference Proceedings (OSTI)

During the 1980s, economists developed the concept of positive network effects and switching costs as the key dynamics of de facto standards competition. They concluded that a positive feedback loop usually ''tips'' a market to the standard with the ... Keywords: Communications standards, Network effects, Strategy, Switching costs, de facto standards

Scott Gallagher; Joel West

2009-09-01T23:59:59.000Z

480

ZonePAC: Zonal Power Estimation and Control via HVAC Metering and Occupant Feedback  

Science Conference Proceedings (OSTI)

Heating Ventillation and Air Conditioning (HVAC) systems account for nearly 40% of primary energy consumption by commercial buildings. Yet, these systems by and large operate in an open-loop with the building occupants. While the monitoring and feedback ... Keywords: Energy Estimation, HVAC, Thermostat, User Interface, Variable Air Volume

Bharathan Balaji, Hidetoshi Teraoka, Rajesh Gupta, Yuvraj Agarwal

2013-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "look-ahead driver feedback" from the National Library of EnergyBeta (NLEBeta).
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481

Using feedback to regulate gene expression in a developmental control architecture  

Science Conference Proceedings (OSTI)

We present what we believe is the first attempt to physically reconstruct the exploratory mechanism of genetic regulatory networks. Feedback plays a crucial role during developmental processes and its mechanisms have recently become much clearer due ... Keywords: adaptation/self-adaptation, developmental processes, evolvable hardware, gene regulatory networks, signal processing

Kester Clegg; Susan Stepney; Tim Clarke

2007-07-01T23:59:59.000Z

482

Bayesian filter based behavior recognition in workflows allowing for user feedback  

Science Conference Proceedings (OSTI)

In this paper, we propose a novel online framework for behavior understanding, in visual workflows, capable of achieving high recognition rates in real-time. To effect online recognition, we propose a methodology that employs a Bayesian filter supported ... Keywords: Bayesian filter, Behavior recognition, Hidden Markov models, User feedback, Workflow

Dimitrios I. Kosmopoulos; Nikolaos D. Doulamis; Athanasios S. Voulodimos

2012-03-01T23:59:59.000Z

483

arXiv:cond-mat/0302529v126Feb2003 Feedback cooling of a nanomechanical resonator  

E-Print Network (OSTI)

by the `passive' refrigeration technique. To perform such feedback cooling the resonator must be monitored- onator is charged, and the SET is biased so that current flows through it, changes in the resonator the resonator (see Fig. 1), or by passing a variable current through the oscillator in the presence of a fixed

484

Case Study of Feedbacks and Synergisms in a Doubled CO2 Experiment  

Science Conference Proceedings (OSTI)

A method is described for analyzing the feedback and synergistic contributions of temperature, water vapor, cloud cover, surface albedo and CO2 to the change in the radiation balance at the top of the atmosphere due to a perturbation in an annual-...

Connee S. Mitchell; Gerald L. Potter; Hugh W. Ellsaesser; John J. Walton

1981-09-01T23:59:59.000Z

485

A model for improving microbial biofuel production using a synthetic feedback loop  

DOE Green Energy (OSTI)

Cells use feedback to implement a diverse range of regulatory functions. Building synthetic feedback control systems may yield insight into the roles that feedback can play in regulation since it can be introduced independently of native regulation, and alternative control architectures can be compared. We propose a model for microbial biofuel production where a synthetic control system is used to increase cell viability and biofuel yields. Although microbes can be engineered to produce biofuels, the fuels are often toxic to cell growth, creating a negative feedback loop that limits biofuel production. These toxic effects may be mitigated by expressing efflux pumps that export biofuel from the cell. We developed a model for cell growth and biofuel production and used it to compare several genetic control strategies for their ability to improve biofuel yields. We show that controlling efflux pump expression directly with a biofuel-responsive promoter is a straight forward way of improving biofuel production. In addition, a feed forward loop controller is shown to be versatile at dealing with uncertainty in biofuel production rates.

Dunlop, Mary; Keasling, Jay; Mukhopadhyay, Aindrila

2011-07-14T23:59:59.000Z

486

Improved noise sensitivity under high-gain feedback in nano-positioning motion systems  

Science Conference Proceedings (OSTI)

To avoid an increased noise response under high-gain feedback in nano-positioning motion systems, a nonlinear (N-PID) control design is proposed. The design is of particular interest in the wafer scanning industry where nano-accuracy should be achieved ...

Marcel Heertjes; George Leenknegt; Bram Van Goch; Henk Nijmeijer

2009-06-01T23:59:59.000Z

487

HomeTree --- an art inspired mobile eco-feedback visualization  

Science Conference Proceedings (OSTI)

This paper presents HomeTree a prototype of an art-inspired mobile eco-feedback system. The system is implemented on a tablet PC and relies on a non-intrusive energy-monitoring infrastructure to access consumption and power event information. Our prototype ... Keywords: aesthetics, art driven ecofeedback, effective computing, prototyping, sustainability, user interfaces

Filipe Quintal; Valentina Nisi; Nuno Nunes; Mary Barreto; Lucas Pereira

2012-11-01T23:59:59.000Z

488

Vegetation Feedbacks to Climate in the Global Monsoon Regions Michael Notaro *, Guangshan Chen, Zhengyu Liu  

E-Print Network (OSTI)

1 Vegetation Feedbacks to Climate in the Global Monsoon Regions Michael Notaro *, Guangshan across six monsoon regions with a fully coupled atmosphere-ocean-ice-land model with dynamic vegetation monsoon regions is reduced and the climatic response assessed. Consistent responses among the regions

Wisconsin at Madison, University of

489

Possible relation between land surface feedback and the post-landfall structure of monsoon depressions  

E-Print Network (OSTI)

Possible relation between land surface feedback and the post-landfall structure of monsoon; published 14 August 2009. [1] The effect of pre-storm land surface on the monsoon depressions (MDs (weaken) the landfalling MDs over the Indian monsoon region. Citation: Chang, H.-I., D. Niyogi, A. Kumar

Niyogi, Dev

490

Evaporation-Wind Feedback and Low-Frequency Variability in the Tropical Atmosphere  

Science Conference Proceedings (OSTI)

A mechanism by which feedback between zonal wind perturbations and evaporation can create unstable, low-frequency modes in a simple two-layer model of the tropical troposphere is presented. The modes resemble the 30–50 day oscillation. A series ...

J. David Neelin; Isaac M. Held; Kerry H. Cook

1987-08-01T23:59:59.000Z

491

Evaluation of the sense of presence and immersion in virtual rehabilitation: influence of user movement feedback  

Science Conference Proceedings (OSTI)

Virtual Rehabilitation has undergone enormous development in recent years. Most existing Virtual Rehabilitation Systems include a tracking system to provide users with feedback of their movements, allowing them to interact with the virtual environment. ... Keywords: human computer interaction, immersion, presence, tracking, virtual rehabilitation

Sergio Albiol-Pérez; José-Antonio Gil-Gómez; Mariano Alcañiz; Habib Moussa Fardoun

2012-10-01T23:59:59.000Z

492

Leverage vs. Feedback: Which Effect Drives the Oil Market? Sofiane Aboura  

E-Print Network (OSTI)

on the WTI crude oil spot price. An increase in the volatility subsequent to an increase in the oil price (i- and fund-managers. Keywords: WTI, Crude Oil Price, Implied Volatility, Leverage Effect, Feedback Effect. JEL Codes: C4, G1, Q4. 1 Introduction The rise of the US benchmark oil West Texas Intermediate (WTI

Paris-Sud XI, Université de

493

Chaotic Oscillators Derived from Sinusoidal Oscillators Based on the Current Feedback Op Amp  

Science Conference Proceedings (OSTI)

A collection of novel chaotic oscillators displaying behavior similar to that of the chaotic Colpitts oscillator and requiring the same number and type of energy storage elements is proposed. The oscillators use as an active element the current feedback ... Keywords: chaos, chaotic oscillators

A. S. Elwakil; M. P. Kennedy

2000-09-01T23:59:59.000Z

494

Stabilizing technique for AC-DC boost PFC converter based on time delay feedback  

Science Conference Proceedings (OSTI)

It is well known that the ac-dc power factor correction (PFC) boost preregulator can present instability at the line frequency. This nonlinear phenomenon can jeopardize the system performances by increasing the total harmonic distortion and decreasing ... Keywords: ac-dc converters, line frequency instability, power factor correction (PFC), time delay feedback (TDF)

Abdelali El Aroudi; Mohamed Orabi

2010-01-01T23:59:59.000Z

495

FICSR: feedback-based inconsistency resolution and query processing on misaligned data sources  

Science Conference Proceedings (OSTI)

A critical reality in data integration is that knowledge from different sources may often be conflicting with each other. Conflict resolutioncan be costly and, if done without proper context, can be ineffective. In this paper, we propose a novel query-driven ... Keywords: conflicts, query processing, reasoning with misaligned data, relevance feedback, taxonomy

Yan Qi; K. Selçuk Candan; Maria Luisa Sapino

2007-06-01T23:59:59.000Z

496

Ficsr: Feedback-based InConSistency Resolution and query processing on misaligned data sources  

E-Print Network (OSTI)

A critical reality in data integration is that knowledge from different sources may often be conflicting with each other. Conflict resolution can be costly and, if done without proper context, can be ineffective. In this paper, we propose a novel query-driven and feedback-based approach (FICSR 1) to conflict resolution when integrating data sources. In particular, instead of relying on traditional model based definition of consistency, we introduce a ranked interpretation. This not only enables FICSR to deal with the complexity of the conflict resolution process, but also helps achieve a more direct match between the users ’ (subjective) interpretation of the data and the system’s (objective) treatment of the available alternatives. Consequently, the ranked interpretation leads to new opportunities for bi-directional (data informs ? ? user) feedback cycle for conflict resolution: given a query, (a) a preliminary ranking of candidate results on data can inform the user regarding constraints critical to the query, while (b) user feedback regarding the ranks can be exploited to inform the system about user’s relevant domain knowledge. To enable this feedback process, we develop data structures and algorithms for efficient off-line conflict/agreement analysis of the integrated data as well as for on-line query processing, candidate result enumeration, and validity analysis. The results are brought together and evaluated in the FICSR system.

Yan Qi; K. Selçuk Candan

2007-01-01T23:59:59.000Z

497

CAPACITY BOUNDS FOR MULTI-USER CHANNELS WITH FEEDBACK, RELAYING AND COOPERATION  

E-Print Network (OSTI)

Recent developments in communications are driven by the goal of achieving high data rates for wireless communication devices. To achieve this goal, several new phenomena need to be investigated from an information theoretic perspective. In this dissertation, we focus on three of these phenomena: feedback, relaying and cooperation. We study these phenomena for various multi-user channels from an information theoretic point of view. One of the aims of this dissertation is to study the performance limits of simple wireless networks, for various forms of feedback and cooperation. Consider an uplink communication system, where several users wish to transmit independent data to a base-station. If the base-station can send feedback to the users, one can expect to achieve higher data-rates since feedback can enable cooperation among the users. Another way to improve data-rates is to make use of the broadcast nature of the wireless medium, where the users can overhear each other’s transmitted signals. This particular phenomenon has garnered much attention lately, where users can helpin increasing each other’s data-rates by utilizing the overheard information. This

Ravi Tandon

2010-01-01T23:59:59.000Z

498

On the capacity region of the Gaussian multiple access channel with noisy feedback  

Science Conference Proceedings (OSTI)

We provide a new outer bound on the capacity region of the two-user Gaussian multiple access channel (MAC) with AWGN-corrupted feedback. Our outer bound is based on the idea of dependence balance due to Hekstra and Willems [1]. Evaluating our outer bound ...

Ravi Tandon; Sennur Ulukus

2009-06-01T23:59:59.000Z

499

Study of double Hopf bifurcation and chaos for an oscillator with time delayed feedback  

Science Conference Proceedings (OSTI)

This paper is concerned with the effect of time delayed feedbacks in a nonlinear oscillator with external forcing. The particular attention is focused on the case that the corresponding linear system has two pairs of purely imaginary eigenvalues at a ... Keywords: chaos, delayed differential equation, double Hopf bifurcation, limit cycle, numerical analysis, torus

P. Yu; Y. Yuan; J. Xu

2002-06-01T23:59:59.000Z

500

Adaptive feedback generation to support teachers in web-based distance education  

Science Conference Proceedings (OSTI)

This work examines the application of user-adapted technologies to address problems experienced in web-based distance education. We have proposed an approach to support distance learning instructors by offering advice that points at problems faced by ... Keywords: (Semi-)automatic advice generation, Distance learning, Empirical evaluation, Intelligent course management systems, Personalised feedback, Teacher support/help

Essam Kosba; Vania Dimitrova; Roger Boyle

2007-09-01T23:59:59.000Z