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Note: This page contains sample records for the topic "time based rate" 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

Quantifying the Impacts of Time-based Rates, Enabling Technology...  

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

the Impacts of Time-based Rates, Enabling Technology, and Other Treatments in Consumer Behavior Studies: Protocols and Guidelines Title Quantifying the Impacts of Time-based Rates,...

2

Residential Customer Enrollment in Time-based Rate and Enabling...  

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

Customer Enrollment in Time-based Rate and Enabling Technology Programs: Smart Grid Investment Grant Consumer Behavior Study Analysis Title Residential Customer Enrollment in...

3

Tips: Time-Based Electricity Rates | Department of Energy  

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

Tips: Time-Based Electricity Rates Tips: Time-Based Electricity Rates Tips: Time-Based Electricity Rates July 2, 2012 - 8:09pm Addthis Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times. Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times. What are the key facts? Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times. Distributing the electricity demand more evenly ensures that a steady and reliable stream of electricity is available for everyone. To help reduce their peak power demands and save money, many utilities are

4

Tips: Time-Based Electricity Rates | Department of Energy  

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

Tips: Time-Based Electricity Rates Tips: Time-Based Electricity Rates Tips: Time-Based Electricity Rates July 2, 2012 - 8:09pm Addthis Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times. Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times. What are the key facts? Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times. Distributing the electricity demand more evenly ensures that a steady and reliable stream of electricity is available for everyone. To help reduce their peak power demands and save money, many utilities are

5

Definition: Time-Based Rate Program | Open Energy Information  

Open Energy Info (EERE)

Based Rate Program Based Rate Program Jump to: navigation, search Dictionary.png Time-Based Rate Program Electricity rates paid by customers in which rates vary for different days, times of the day, or events (such as days with extremely high loads). Various types of customer systems facilitate implementation of these time-variant pricing programs. These systems include smart meters, controls, and communications systems and software that provide two-way information between utilities and customers. Such systems may control customer load, based on the time-variant pricing program, or provide information for customers to alter their electricity consumption pattern in response to different rates during any given hour of the day. There are different pricing programs such as: Time Of Use (TOU) where the day is

6

Optimization of time-based rates in forward energy markets  

E-Print Network (OSTI)

This paper presents a new two-step design approach of Time-Based Rate (TBR) programs for markets with a high penetration of variable energy sources such as wind power. First, an optimal market time horizon must be determined ...

Wang, J.

7

Tips: Time-Based Electricity Rates | Department of Energy  

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

July 2, 2012 - 8:09pm Addthis Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times....

8

A New Series of Rate Decline Relations Based on the Diagnosis of Rate-Time Data  

E-Print Network (OSTI)

The so-called "Arps" rate decline relations are by far the most widely used tool for assessing oil and gas reserves from rate performance. These relations (i.e., the exponential and hyperbolic decline relations) are empirical where the starting point for their derivation is given by the definitions of the "loss ratio" and the "derivative of the loss ratio", where the "loss ratio" is the ratio of rate data to derivative of rate data, and the "derivative of the loss ratio" is the "b-parameter" as defined by Arps [1945]. The primary goal of this work is the interpretation of the b-parameter continuously over time and thus the better understanding of its character. As is shown below we propose "monotonically decreasing functional forms" for the characterization of the b-parameter, in addition to the exponential and hyperbolic rate decline relations, where the b-parameter is assumed to be zero and constant, respectively. The proposed equations are as follow: b(t)=constant (Arps' hyperbolic rate-decline relation), []tbbtb10exp)(-bt= (exponential function), (power-law function), 10)(btbtb=)/(1)(10tbbtb+= (rational function). The corresponding rate decline relation for each case is obtained by solving the differential equation associated with the selected functional for the b-parameter. The next step of this procedure is to test and validate each of the rate decline relations by applying them to various numerical simulation cases (for gas), as well as for field data cases obtained from tight/shale gas reservoirs. Our results indicate that b-parameter is never constant but it changes continuously with time. The ultimate objective of this work is to establish each model as a potential analysis/diagnostic relation. Most of the proposed models yield more realistic estimations of gas reserves in comparison to the traditional Arps' rate decline relations (i.e., the hyperbolic decline) where the reserves estimates are inconsistent and over-estimated. As an example, the rational b-parameter model seems to be the most accurate model in terms of representing the character of rate data; and therefore, should yield more realistic reserves estimates. Illustrative examples are provided for better understanding of each b-parameter rate decline model. The proposed family of rate decline relations was based on the character of the b-parameter computed from the rate-time data and they can be applied to a wide range of data sets, as dictated by the character of rate data.

Boulis, Anastasios

2009-08-01T23:59:59.000Z

9

Analysis of Customer Enrollment Patterns in TIme-Based Rate Programs:  

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

Analysis of Customer Enrollment Patterns in TIme-Based Rate Analysis of Customer Enrollment Patterns in TIme-Based Rate Programs: Initial Results from the SGIG Consumer Behavior Studies (July 2013) Analysis of Customer Enrollment Patterns in TIme-Based Rate Programs: Initial Results from the SGIG Consumer Behavior Studies (July 2013) The U.S. Department of Energy is implementing the Smart Grid Investment Grant (SGIG) program under the American Recovery and Reinvestment Act of 2009 (Recovery Act). The SGIG program involves 99 projects that are deploying smart grid technologies, tools, and techniques for electric transmission, distribution, advanced metering, and customer systems. A subset of the 99 SGIG projects is conducting consumer behavior studies. These studies examine the response of residential and small commercial

10

OG&E Uses Time-Based Rate Program to Reduce Peak Demand  

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

The VPP rates during the five-hour peak period vary daily depending on the cost of electricity. The VPP also includes a critical peak price (CPP) component that is...

11

Quantifying the Impacts of Time-Based Rates, Enabling Technology, and Other Treatments in Consumer Behavior Studies: Protocols and Guidelines  

Science Conference Proceedings (OSTI)

This report offers guidelines and protocols for measuring the effects of time-based rates, enabling technology, and various other treatments on customers’ levels and patterns of electricity usage. Although the focus is on evaluating consumer behavior studies (CBS) that involve field trials and pilots, the methods can be extended to assessing the large-scale programs that may follow. CBSs are undertaken to resolve uncertainties and ambiguities about how consumers respond to inducements to ...

2013-07-17T23:59:59.000Z

12

Beyond long memory in heart rate variability: An approach based on fractionally integrated autoregressive moving average time series models with conditional heteroscedasticity  

Science Conference Proceedings (OSTI)

Heart Rate Variability (HRV) series exhibit long memory and time-varying conditional variance. This work considers the Fractionally Integrated AutoRegressive Moving Average (ARFIMA) models with Generalized AutoRegressive Conditional Heteroscedastic (GARCH) errors. ARFIMA-GARCH models may be used to capture and remove long memory and estimate the conditional volatility in 24 h HRV recordings. The ARFIMA-GARCH approach is applied to fifteen long term HRV series available at Physionet

2013-01-01T23:59:59.000Z

13

Initial Studies Toward Real-Time Transmission Path Rating  

Science Conference Proceedings (OSTI)

Demand continues to increase while transmission line construction is being constrained by multiple factors— economic, environmental, and political. Effective and efficient utilization of transmission lines is thus of great importance in an open access environment. Large blocks of power are transferred from areas with inexpensive generation to heavy load demand areas or areas with high generation costs. This results in some transmission paths being loaded closer to their path ratings, which limits further power transfer between areas. Traditionally, rating of important paths was determined off line by assuming the worst-case study scenario; once determined, it could be used for years. With increasing uncertainty arising from rapid growth of renewable energy and smart technologies, path rating studies are needed in near-real time to account for the latest system status and support a reliable and economic power grid. This paper adopts a simplified procedure based on standards of the North American Electric Reliability Corporation (NERC) to determine total transfer capability (TTC) or transfer limit for the purpose of demonstrating the benefits and necessity of real-time path rating. Initial studies are conducted to compute TTC of a two-area test system and a 39-bus test system. Results indicate that path rating can be significantly affected by loading conditions, generator schedules, system topology and other factors.

Singh, Ruchi; Diao, Ruisheng; Cai, Niannian; Huang, Zhenyu; Tuck, Brian; Guo, Xinxin

2012-07-26T23:59:59.000Z

14

Video digest based on heart rate  

Science Conference Proceedings (OSTI)

In video digesting, not only features and keywords extracted from a content itself but viewer's input are essential to incorporate subjective impressions and perceived importance. The present study aims at providing heart rate based arousal level as ... Keywords: affect, emotion, heart rate, psychophysiology, video analysis, video digest

Satoshi Toyosawa; Takashi Kawai

2007-08-01T23:59:59.000Z

15

Voter Model with Time dependent Flip-rates  

E-Print Network (OSTI)

We introduce time variation in the flip-rates of the Voter Model. This type of generalisation is relevant to models of ageing in language change, allowing the representation of changes in speakers' learning rates over their lifetime and may be applied to any other similar model in which interaction rates at the microscopic level change with time. The mean time taken to reach consensus varies in a nontrivial way with the rate of change of the flip-rates, varying between bounds given by the mean consensus times for static homogeneous (the original Voter Model) and static heterogeneous flip-rates. By considering the mean time between interactions for each agent, we derive excellent estimates of the mean consensus times and exit probabilities for any time scale of flip-rate variation. The scaling of consensus times with population size on complex networks is correctly predicted, and is as would be expected for the ordinary voter model. Heterogeneity in the initial distribution of opinions has a strong effect, considerably reducing the mean time to consensus, while increasing the probability of survival of the opinion which initially occupies the most slowly changing agents. The mean times to reach consensus for different states are very different. An opinion originally held by the fastest changing agents has a smaller chance to succeed, and takes much longer to do so than an evenly distributed opinion.

G. J. Baxter

2011-04-14T23:59:59.000Z

16

Tiered time-of-use rates | OpenEI Community  

Open Energy Info (EERE)

Tiered time-of-use rates Tiered time-of-use rates Home > Groups > Utility Rate Hello! Last year, I found OpenEI via NREL's System Advisor Model, when I was considering a PV system for my home in PG&E's northern California. I also drive an EV (Volt), so there are at least three relevant rate structures to consider: E1 is the standard residental tiered rate, E6 is a tiered time of use plan intended for PV customers, and E9A is a tiered time of use plan for EV customers. As I recall, the E1 data was already in the database, but I had to attempt to create the entries for E6 and E9A. I understand how to enter TOU rates, and I understand how to enter tiered rates, but I can't understand how to enter TOU rates that ALSO have tiers. At the time, I just entered the "baseline" rates, and they don't appear to

17

Tiered time-of-use rates | OpenEI Community  

Open Energy Info (EERE)

Tiered time-of-use rates Tiered time-of-use rates Home > Groups > Utility Rate Hello! Last year, I found OpenEI via NREL's System Advisor Model, when I was considering a PV system for my home in PG&E's northern California. I also drive an EV (Volt), so there are at least three relevant rate structures to consider: E1 is the standard residental tiered rate, E6 is a tiered time of use plan intended for PV customers, and E9A is a tiered time of use plan for EV customers. As I recall, the E1 data was already in the database, but I had to attempt to create the entries for E6 and E9A. I understand how to enter TOU rates, and I understand how to enter tiered rates, but I can't understand how to enter TOU rates that ALSO have tiers. At the time, I just entered the "baseline" rates, and they don't appear to

18

High-speed real-time multi-rate simulation  

Science Conference Proceedings (OSTI)

Recent research has focused on developing techniques that use digital signal processors (DSPs) and field-programmable gate arrays (FPGAs) to support real-time simulation with frame times of a few microseconds or less. These techniques can be used ... Keywords: FPGA, distributed, high-speed, multi-rate, real-time

Roy Crosbie; Dale Word; John Zenor; Richard Bednar; Wilfred Ghonsalves; Narain Hingorani

2009-07-01T23:59:59.000Z

19

Energy Productivity Via Time-of-Day Rates  

E-Print Network (OSTI)

Prompted by a combination of PURPA and a national concern about electricity price and supply, many utilities now have in place industrial time-of-day electric rates. When properly designed, these rates present an opportunity for energy-intensive industrial customers to lower their cost of power while at the same time improving the load characteristics of their utility supplier. This paper examines the present state of time-of-day rates and discusses steps that Air Products is taking to maximize their electric use productivity.

Michael, R. S.

1984-01-01T23:59:59.000Z

20

Variability of Space–Time Mean Rain Rate  

Science Conference Proceedings (OSTI)

A mixed lognormal distribution is fit to rain-rate data for the purpose of estimating the space–time mean. Using Fisher information, the large sample variance is obtained for grouped and ungrouped data estimates. The asymptotic variance results ...

B. Kedem; R. Pfeiffer; D. A. Short

1997-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

Dead-time compensation for a logarithmic display rate meter  

DOE Patents (OSTI)

An improved circuit is provided for application to a radiation survey meter that uses a detector that is subject to dead time. The circuit compensates for dead time over a wide range of count rates by producing a dead-time pulse for each detected event, a live-time pulse that spans the interval between dead-time pulses, and circuits that average the value of these pulses over time. The logarithm of each of these values is obtained and the logarithms are subtracted to provide a signal that is proportional to a count rate that is corrected for the effects of dead time. The circuit produces a meter indication and is also capable of producing an audible indication of detected events.

Larson, John A. (Aurora, IL); Krueger, Frederick P. (Aurora, IL)

1988-09-20T23:59:59.000Z

22

Efficiently decoded full-rate space-time block codes  

Science Conference Proceedings (OSTI)

Space-time block codes with orthogonal structures typically provide full-diversity reception and simple receiver processing. However, rate-1 orthogonal codes for complex constellations have not been found for more than two transmit antennas. By using ... Keywords: diversity, genetic algorithm, quasi-orthogonal codes, space-time block codes

Don Torrieri; Matthew C. Valenti

2010-02-01T23:59:59.000Z

23

Benchmarking and Performance Based Rating System for Commercial Buildings  

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

Benchmarking and Performance Based Rating System for Commercial Buildings Benchmarking and Performance Based Rating System for Commercial Buildings in India Speaker(s): Saket Sarraf Date: May 4, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Girish Ghatikar The Indian building sector has witnessed huge surge in interest in energy performance in the last decade. The 'intention' based codes like the national Energy Conservation Building Code (ECBC) and green building rating systems such as Leadership in Energy and Environment Design (LEED-India) and Green Rating for Integrated Habitat Assessment (GRIHA) have been the prime mechanisms to design and assess energy efficient buildings. However, they do not rate the 'achieved' energy performance of buildings over time or reward their performance through a continuous evaluation process.

24

Puerto Rico time-of-day rates demonstration. Final report  

SciTech Connect

The Puerto Rico Time of Day (TOD) electric rate demonstration project consists of three distinct studies: (A) Low usage customers (less than or equal to425 kWh per 30 consecutive days) are compared for a 12 hours peak period rate, against a control group of similar usage. (B) High usage customers (>425 kWh per 30 consecutive days) are assigned a single 12 hours peak period experimental rate. (C) High usage customers, assigned to a number of different experimental rates and compared against a control group (also used for B). For this group, peak period lengths are fixed at a specific six hour period and rates are allowed to vary. For comparative purposes a control group is included. As part of this experiment an entry and exit survey have been designed. The purpose of the surveys is to find out the changes in electric consumption stock and life style of the participants from the start to the end of the project. As participants were assigned to rates or control groups on a random basis, the emphasis of the entry survey analysis is to determine if there are any significant statistical differences among the selected participants.

1985-01-01T23:59:59.000Z

25

SNR-based Rate Control in WaveLAN  

E-Print Network (OSTI)

Streaming multimedia content in real-time over a wireless link is a challenging task because of the rapid fluctuations in link conditions that can occur due to movement, interference, and so on. The popular IEEE 802.11 standard includes low-level tuning parameters like the transmission rate. Standard device drivers for today's wireless products are based on gathering statistics, and consequently, adapt rather slowly to changes in conditions. To meet the strict latency requirements of streaming applications, we designed and implemented an advanced control algorithm that uses signal-strength (SNR) information to achieve fast responses. Since SNR readings are quite noisy we do not use that information to directly control the rate setting, but rather as a safeguard limiting the range of feasible settings to choose from. We report on real-time experiments involving two laptops equipped with IEEE 802.11a wireless interface cards. The results show that using SNR information greatly enhances responsiveness in comparison to statistics-based rate controllers.

Ivaylo Haratcherev; Koen Langendoen; Reginald Lagendijk; Henk Sips

2004-01-01T23:59:59.000Z

26

Rate-based degradation modeling of lithium-ion cells  

DOE Green Energy (OSTI)

Accelerated degradation testing is commonly used as the basis to characterize battery cell performance over a range of stress conditions (e.g., temperatures). Performance is measured by some response that is assumed to be related to the state of health of the cell (e.g., discharge resistance). Often, the ultimate goal of such testing is to predict cell life at some reference stress condition, where cell life is defined to be the point in time where performance has degraded to some critical level. These predictions are based on a degradation model that expresses the expected performance level versus the time and conditions under which a cell has been aged. Usually, the degradation model relates the accumulated degradation to the time at a constant stress level. The purpose of this article is to present an alternative framework for constructing a degradation model that focuses on the degradation rate rather than the accumulated degradation. One benefit of this alternative approach is that prediction of cell life is greatly facilitated in situations where the temperature exposure is not isothermal. This alternative modeling framework is illustrated via a family of rate-based models and experimental data acquired during calendar-life testing of high-power lithium-ion cells.

E.V. Thomas; I. Bloom; J.P. Christophersen; V.S. Battaglia

2012-05-01T23:59:59.000Z

27

PCN-based measured rate termination  

Science Conference Proceedings (OSTI)

Overload in a packet-based network can be prevented by admitting or blocking new flows depending on its load conditions. However, overload can occur in spite of admission control due to unforseen events, e.g., when admitted traffic is rerouted in the ... Keywords: Admission control, Differentiated services, Flow termination, QoS, Resilience

Michael Menth; Frank Lehrieder

2010-09-01T23:59:59.000Z

28

Measurement of Hydrogen Production Rate Based on Dew Point Temperature...  

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

MP-150-42237 U. S. Department of Energy Hydrogen Program Measurement of Hydrogen Production Rate Based on Dew Point Temperatures National Renewable Energy Laboratory 1617 Cole...

29

Two stage emotion recognition based on speaking rate  

Science Conference Proceedings (OSTI)

This paper proposes two stage speech emotion recognition approach using speaking rate. The emotions considered in this study are anger, disgust, fear, happy, neutral, sadness, sarcastic and surprise. At the first stage, based on speaking rate, eight ... Keywords: Active emotions, Emotion categorization, Fast speech, Formant features, Gaussian mixture models, Normal emotions, Normal speech, Passive emotions, Prosodic features, Slow speech, Speaking rate

Shashidhar G. Koolagudi; Rao Sreenivasa Krothapalli

2011-03-01T23:59:59.000Z

30

Model-based estimation of time-varying parameters and state variables in aerobic bioprocesses  

Science Conference Proceedings (OSTI)

Keywords: adaptive observer, aerobic bioprocess, biomass concentration, biomass growth rate, model-based estimation, observer stability, oxygen comsumption, time-varying parameters, yield coefficient

V. Lubenova

2000-08-01T23:59:59.000Z

31

Length and Time-Dependent Rates in Diffusion-Controlled Reactions...  

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

Length and Time-Dependent Rates in Diffusion-Controlled Reactions with Conjugated Polymers Paiboon Sreearunothai, Sadayuki Asaoka, Andrew R. Cook and John R. Miller J. Phys. Chem....

32

Analysis of Heart Rate Variability Using Time-Varying Filtering of Heart Transplanted Patients  

E-Print Network (OSTI)

Analysis of Heart Rate Variability Using Time-Varying Filtering of Heart Transplanted Patients the heart rate variability (HRV), obtained by using the time-varying integral pulse frequency modulation (TVIPFM) which is well adapted to the exercise stress testing. We consider that the mean heart period

Paris-Sud XI, Université de

33

Ground-Based Remote Retrievals of Cumulus Entrainment Rates  

Science Conference Proceedings (OSTI)

While fractional entrainment rates for cumulus clouds have typically been derived from airborne observations, this limits the size and scope of available data sets. To increase the number of continental cumulus entrainment rate observations available for study, an algorithm for retrieving them from ground-based remote sensing observations has been developed. This algorithm, called the Entrainment Rate In Cumulus Algorithm (ERICA), uses the suite of instruments at the Southern Great Plains (SGP) site of the United States Department of Energy's Atmospheric Radiation Measurement (ARM) Climate Research Facility as inputs into a Gauss-Newton optimal estimation scheme, in which an assumed guess of the entrainment rate is iteratively adjusted through intercomparison of modeled liquid water path and cloud droplet effective radius to their observed counterparts. The forward model in this algorithm is the Explicit Mixing Parcel Model (EMPM), a cloud parcel model that treats entrainment as a series of discrete entrainment events. A quantified value for measurement uncertainty is also returned as part of the retrieval. Sensitivity testing and information content analysis demonstrate the robust nature of this method for retrieving accurate observations of the entrainment rate without the drawbacks of airborne sampling. Results from a test of ERICA on three months of shallow cumulus cloud events show significant variability of the entrainment rate of clouds in a single day and from one day to the next. The mean value of 1.06 km-¹ for the entrainment rate in this dataset corresponds well with prior observations and simulations of the entrainment rate in cumulus clouds.

Wagner, Timothy J.; Turner, David D.; Berg, Larry K.; Krueger, Steven K.

2013-07-26T23:59:59.000Z

34

Progress towards a low-cost high-speed real-time multi-rate simulator  

Science Conference Proceedings (OSTI)

Recent research has focused on developing techniques that use field-programmable gate arrays (FPGAs) to support real-time simulation with frame times of a few microseconds or less. These techniques can be used to simulate, for example, modern power electronic ... Keywords: FPGA, distributed, high-speed, multi-rate, real-time

John Zenor; Dale Word; Richard Bednar; Roy Crosbie; Narain Hingorani

2010-07-01T23:59:59.000Z

35

Evaluation of Methodologies for Real-Time Incremental Heat Rate Determination  

Science Conference Proceedings (OSTI)

Reduced staffing, tighter budgets, ISOs, and increased competition have created the need for maintaining up-to-date incremental heat rate information. Combining recent advances in analytics with modern performance monitoring packages and data historians may provide the capability for closer-to-real-time incremental heat rate determination. Many power generating companies either rely on historic data or slow and labor intensive testing to establish incremental heat rate curves. Those curves are ...

2013-11-26T23:59:59.000Z

36

An Evaluation of Time Dependent Leak Rates in Degraded Steam Generator Tubing  

Science Conference Proceedings (OSTI)

Argonne National Laboratory (ANL) has performed leak rate testing of degraded steam generator tubing for a number of years as part of the Steam Generator Tube Integrity Program, under the sponsorship of the Office of Nuclear Regulatory Research of the U.S. Nuclear Regulatory Commission. This document describes the results of a review and evaluation of ANL time-dependent leak rate information.

2007-12-13T23:59:59.000Z

37

Effects of the Mixed Layer Time Variability on Kinematic Subduction Rate Diagnostics  

Science Conference Proceedings (OSTI)

An eddy-resolving primitive equation general circulation model is used to estimate water-mass subduction rates in the North Atlantic Ocean subtropical gyre. The diagnostics are based on the instantaneous kinematic approach, which allows the ...

Maria Valdivieso Da Costa; Herlé Mercier; Anne Marie Treguier

2005-04-01T23:59:59.000Z

38

Acid-base chemical reaction model for nucleation rates in the...  

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

Acid-base chemical reaction model for nucleation rates in the polluted atmospheric boundary layer Title Acid-base chemical reaction model for nucleation rates in the polluted...

39

Workshop: Time Resolved X-Ray Science at High Repetition Rate | Stanford  

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

Time Resolved X-Ray Science at High Repetition Rate Time Resolved X-Ray Science at High Repetition Rate Saturday, October 22, 2011 - 8:30am SSRL Conference Room 137-322 In conjunction with the 2011 LCLS/SSRL User Meeting, SSRL and the APS will jointly host a two-day workshop focused on opportunities with short-pulse, high-repetition rate X-ray Science. The workshop will feature international speakers and panel experts presenting the scientific basis, preliminary results and future potential of high rep-rate picosecond x-rays beams from storage rings. The workshop will be broadly focused on topics in materials science, chemistry, biology and catalysis. The workshop agenda will also include presentations on accelerator operational modes, precision timing issues, detector challenges and the relation of storage ring science with

40

Benchmarking and Performance Based Rating System for Commercial...  

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

and green building rating systems such as Leadership in Energy and Environment Design (LEED-India) and Green Rating for Integrated Habitat Assessment (GRIHA) have been the prime...

Note: This page contains sample records for the topic "time based rate" 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

Who's In The Dark: Satellite Based Estimates Of Electrification Rates  

SciTech Connect

A technique has been developed to estimate the percent population having electric power access based on the presence of satellite detected nighttime lighting. A global survey was conducted for the year 2006 using nighttime lights collected by the U.S. Air Force Defense Meteorological Satellite Program (DMSP) in combination with the U.S. Department of Energy Landscan population dataset. The survey includes results for 229 countries and more than 2000 subnational units. The results are compared to reported electrification rates for 87 countries compiled from a variety of sources by the International Energy Agency. The DMSP derived estimate of number of people worldwide who lack access to electricity is 1.62 billion, only slightly larger than the 1.58 billion estimated by the International Energy Agency.

Elvidge, Christopher D. [NOAA National Geophysical Data Center,; Baugh, Kimberly E. [NOAA National Geophysical Data Center,; Sutton, Paul S. [University of Denver; Bhaduri, Budhendra L [ORNL; Tuttle, Benjamin T. [NOAA National Geophysical Data Center,; Ghosh, Tilottama [University of Denver; Ziskin, Daniel [University of Colorado, Boulder; Erwin, Edward [NOAA National Geophysical Data Center,

2011-01-01T23:59:59.000Z

42

An Evaluation of Time Dependent Leak Rates in Degraded Steam Generator Tubing  

Science Conference Proceedings (OSTI)

The U.S. Nuclear Regulatory Commission sponsored leak rate tests of steam generator (SG) tubing with stress corrosion cracks and electrodischarged machining (EDM) notches at Argonne National Laboratory (ANL). Some test specimens displayed time-dependent leak rate increases when the pressure was held constant. Post-test visual examination clearly revealed that the outside diameter (OD) crack length of these specimens had increased. It was suspected that fatigue due to jet/structure interaction was respons...

2008-10-08T23:59:59.000Z

43

Peeping at chaos: Nondestructive monitoring of chaotic systems by measuring long-time escape rates  

E-Print Network (OSTI)

One or more small holes provide non-destructive windows to observe corresponding closed systems, for example by measuring long time escape rates of particles as a function of hole sizes and positions. To leading order the escape rate of chaotic systems is proportional to the hole size and independent of position. Here we give exact formulas for the subsequent terms, as sums of correlation functions; these depend on hole size and position, hence yield information on the closed system dynamics. Conversely, the theory can be readily applied to experimental design, for example to control escape rates.

L. A. Bunimovich; C. P. Dettmann

2006-10-06T23:59:59.000Z

44

RATES  

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

Marketing > RATES Marketing > RATES RATES Current Rates Past Rates 2006 2007 2008 2009 2010 2011 2012 Rates Schedules Power CV-F13 CPP-2 Transmissions CV-T3 CV-NWT5 PACI-T3 COTP-T3 CV-TPT7 CV-UUP1 Ancillary CV-RFS4 CV-SPR4 CV-SUR4 CV-EID4 CV-GID1 Future and Other Rates SNR Variable Resource Scheduling Charge FY12-FY16 (October 1, 2012) SNR Rates Process Calendar (PDF - 171K) Procedures Informal Process Transmission Action Items List (PDF - 144K) Power Action Item List updated on 4-27-10 (PDF - 155K) Power Action Item List (Quick links to relevant documents) Formal Process Rates Brochure (01/11/2011) (PDF - 900K) Appendix A - Federal Register Notice (01/03/2011) (PDF - 8000K) Appendix B - Central Valley Project Power Repayment Study (PDF - 22,322K) Appendix C - Development of the CVP Cost of Service Study (PDF - 2038K)

45

RATES  

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

Planning & Projects Planning & Projects Power Marketing Rates You are here: SN Home page > Power Marketing > RATES Rates and Repayment Services Rates Current Rates Power Revenue Requirement Worksheet (FY 2014) (Oct 2013 - Sep 2014) (PDF - 30K) PRR Notification Letter (Sep 27, 2013) (PDF - 959K) FY 2012 FP% True-Up Calculations(PDF - 387K) Variable Resource Scheduling Charge FY12-FY16 (October 1, 2012) PRR Forecast FY14-FY17 (May 23, 2013) (PDF - 100K) Forecasted Transmission Rates (May 2013) (PDF - 164K) Past Rates 2013 2012 2011 2010 2009 Historical CVP Transmission Rates (April 2013) (PDF - 287K) Rate Schedules Power - CV-F13 - CPP-2 Transmission - CV-T3 - CV-NWT5 - PACI-T3 - COTP-T3 - CV-TPT7 - CV-UUP1 Ancillary - CV-RFS4 - CV-SPR4 - CV-SUR4 - CV-EID4 - CV-GID1 Federal Register Notices - CVP, COTP and PACI

46

Radiology-led Follow-up System for IVC Filters: Effects on Retrieval Rates and Times  

SciTech Connect

Purpose: Successful IVC filter retrieval rates fall with time. Serious complications have been reported following attempts to remove filters after 3-18 months. Failed retrieval may be associated with adverse clinical sequelae. This study explored whether retrieval rates are improved if interventional radiologists organize patient follow-up, rather than relying on the referring clinicians. Methods: Proactive follow-up of patients who undergo filter placement was implemented in May 2008. At the time of filter placement, a report was issued to the referring consultant notifying them of the advised timeframe for filter retrieval. Clinicians were contacted to arrange retrieval within 30 days. We compared this with our practice for the preceding year. Results: The numbers of filters inserted during the two time periods was similar, as were the numbers of retrieval attempts and the time scale at which they occurred. The rate of successful retrievals increased but not significantly. The major changes were better documentation of filter types and better clinical follow-up. After the change in practice, only one patient was lost to follow-up compared with six the preceding year. Conclusions: Although there was no significant improvement in retrieval rates, the proactive, radiology-led approach improved follow-up and documentation, ensuring that a clinical decision was made about how long the filter was required and whether retrieval should be attempted and ensuring that patients were not lost to follow-up.

Lee, L.; Taylor, J.; Munneke, G.; Morgan, R.; Belli, A.-M., E-mail: anna.belli@stgeorges.nhs.uk [St George's Hospital NHS Trust, Department of Radiology (United Kingdom)

2012-04-15T23:59:59.000Z

47

On Time-Invariant Purified-Output-Based Discrete Time Control  

E-Print Network (OSTI)

Oct 14, 2005 ... On Time-Invariant Purified-Output-Based Discrete Time Control. Aharon Ben-Tal (abental ***at*** ie.technion.ac.il) Stephen Boyd (boyd ***at*** ...

48

Electricity Rate Structures and the Economics of Solar PV: Could Mandatory Time-of-Use Rates Undermine California’s Solar Photovoltaic Subsidies?  

E-Print Network (OSTI)

Photovoltaic Systems in California and the Southwest RegionTime-of-Use Rates Undermine California’s Solar Photovoltaicof the University of California Energy Institute, a multi-

Borenstein, Severin

2007-01-01T23:59:59.000Z

49

Ground-Based Remote Retrievals of Cumulus Entrainment Rates  

Science Conference Proceedings (OSTI)

While fractional entrainment rates for cumulus clouds have typically been derived from airborne observations, this limits the size and scope of available datasets. To increase the number of continental cumulus entrainment rate observations ...

Timothy J. Wagner; David D. Turner; Larry K. Berg; Steven K. Krueger

2013-07-01T23:59:59.000Z

50

Interpretation of underbalanced surge pressure data by rate-time convolution  

Science Conference Proceedings (OSTI)

Well test analysis of pressure response data from either underbalanced perforating or backsurge perforation washing is accomplished by rate-time convolution. The presented method allows closed chamber test analysis of reservoir transmissivity and wellbore skin by a straight line graph analogous to a Horner plot. As a well test analysis method, the closed chamber test has the benefit of avoiding surface pressure buildup, which often prohibits conventional drill stem testing. Pressure measurement is required at the top of the surge air chamber and at the sand face. A linear plot is generated by convolution with respect to time of flowrate, which is derived from the air chamber pressure, and plotting the bottom hole pressure versus the rate-time superposition function. Transmissivity is obtained from the slope of the pressure data during the period when afterflow is minimal and pressure is not sensitive to skin. An estimate of initial reservoir pressure results from extrapolation of the pressure trend. Subsequent forced fitting of the flow period data to the expected linear plot of bottom-hole pressure versus the rate-time superposition function yields wellbore skin. Unique to the convolution method, wellbore skin may be calculated for each flowing pressure measurement. Therefore in addition to final skin determination, the effectiveness of the perforation cleaning mechanism may be observed by noting the trend of skin as a function of time during the flow period.

Simmons, J.F.

1986-01-01T23:59:59.000Z

51

RATES  

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

RATES RATES Rates Document Library SNR Rates Process Calendar (PDF - 171K) Procedures Informal Process Transmission Action Items List (PDF - 144K) Power Action Item List updated on 4-27-10 (PDF - 155K) Power Action Item List (Quick links to relevant documents) Formal Process Rates Brochure (01/11/2011) (PDF - 900K) Appendix A - Federal Register Notice (01/03/2011) (PDF - 8000K) Appendix B - Central Valley Project Power Repayment Study (PDF - 22,322K) Appendix C - Development of the CVP Cost of Service Study (PDF - 2038K) Appendix D - Western Transmission System Facilities Map (PDF - 274K) Appendix E - Estimated FY12 FP and BR Customer (PDF - 1144K) Appendix F - Forecasted Replacements and Additions FY11 - FY16 (PDF - 491K) Appendix G - Definitions (PDF - 1758K) Appendix H - Acronyms (PDF - 720K)

52

Meese-Rogoff redux: Micro-based exchange-rate forecasting  

E-Print Network (OSTI)

Johnatban. "Exchange Rate Forecasting: The Errors We'veBased Exchange-Rate Forecasting By MARTIN D . D . EVANS ANDon longer-horizon forecasting, we examine forecasting over

Evans, MDD; Lyons, Richard K.

2005-01-01T23:59:59.000Z

53

Acid-base chemical reaction model for nucleation rates in the polluted  

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

Acid-base chemical reaction model for nucleation rates in the polluted Acid-base chemical reaction model for nucleation rates in the polluted atmospheric boundary layer Title Acid-base chemical reaction model for nucleation rates in the polluted atmospheric boundary layer Publication Type Conference Paper Year of Publication 2013 Authors Chen, Modi, Mari Titcombe, Jingkun Jiang, Coty Jen, Chongai Kuang, Marc L. Fischer, Fred L. Eisele, Ilja J. Siepmann, David R. Hanson, Jun Zhao, and Peter H. McMurry Conference Name Nucleation and Atmospheric Aerosols: 19th International Conference Publisher AIP Publishing LLC Conference Location Fort Collins, CO Abstract Measurements of aerosol number distributions down to one molecule have provided information that we've used to develop a new approach for modeling atmospheric nucleation rates. Measurements were carried out with the Cluster Chemical Ionization Mass Spectrometer (Cluster CIMS), the scanning mobility spectrometer using a diethylene glycol condensation particle counter as detector (DEG SMPS), and an ambient pressure proton transfer mass spectrometer for ammonia and amines (AmPMS). The model explains nucleation as a result of cluster evolution due to a sequence of acid-base reactions. We conclude that the smallest stable cluster contains four sulfuric acid molecules. The model leads to a simple analytic expression for nucleation rates that is reasonably consistent (i.e., ± 10x) with atmospheric observations. The model predicts that nucleation rates are equal to a prefactor, P<1, times the sulfuric acid vapor collision rate, (i.e., J=P⋅0.5⋅k11 ∗[H2SO4]2).

54

Feature-based clustering for electricity use time series data  

Science Conference Proceedings (OSTI)

Time series clustering has been shown effective in providing useful information in various applications. This paper presents an efficient computational method for time series clustering and its application focusing creation of more accurate electricity ... Keywords: electricity distribution, electricity use data, feature extraction, feature-based clustering, load curves, time series clustering

Teemu Räsänen; Mikko Kolehmainen

2009-04-01T23:59:59.000Z

55

Clock rates, clock settings and the physics of the space-time Lorentz transformation  

E-Print Network (OSTI)

A careful study is made of the operational meaning of the time symbols appearing in the space-time Lorentz transformation. Four distinct symbols, with different physical meanings, are needed to describe reciprocal measurements involving stationary and uniformly-moving clocks. Physical predictions concern only the observed rate of a clock as a function of its relative speed, not its setting. How the failure to make this distinction leads to the conventional predictions of spurious `relativity of simultaneity' and `length contraction' effects in special relativity is explained.

J. H. Field

2006-06-12T23:59:59.000Z

56

Elastic capsules in shear flow: Analytical solutions for constant and time-dependent shear rates  

E-Print Network (OSTI)

We investigate the dynamics of microcapsules in linear shear flow within a reduced model with two degrees of freedom. In previous work for steady shear flow, the dynamic phases of this model, i.e. swinging, tumbling and intermittent behaviour, have been identified using numerical methods. In this paper, we integrate the equations of motion in the quasi-spherical limit analytically for time-constant and time-dependent shear flow using matched asymptotic expansions. Using this method, we find analytical expressions for the mean tumbling rate in general time-dependent shear flow. The capsule dynamics is studied in more detail when the inverse shear rate is harmonically modulated around a constant mean value for which a dynamic phase diagram is constructed. By a judicious choice of both modulation frequency and phase, tumbling motion can be induced even if the mean shear rate corresponds to the swinging regime. We derive expressions for the amplitude and width of the resonance peaks as a function of the modulation frequency.

Steffen Kessler; Reimar Finken; Udo Seifert

2009-02-26T23:59:59.000Z

57

Ab Initio-Based Rate Theory Modeling of Radiation Induced ...  

Science Conference Proceedings (OSTI)

In this study, we construct a rate theory model to simulate RIS in Ni-Cr alloys ... Evolution and Hardening of High- and Low-Cu Reactor Pressure Vessel Steels.

58

Size and time-resolved growth rate measurements of 1 to 5 nm freshly formed atmospheric nuclei  

SciTech Connect

This study presents measurements of size and time-resolved particle diameter growth rates for freshly nucleated particles down to 1 nm geometric diameter. Novel data analysis methods were developed, de-coupling for the first time the size and time-dependence of particle growth rates by fitting the aerosol general dynamic equation to size distributions obtained at an instant in time. Size distributions of freshly nucleated total aerosol (neutral and charged) were measured during two intensive measurement campaigns in different environments (Atlanta, GA and Boulder, CO) using a recently developed electrical mobility spectrometer with a diethylene glycol-based ultrafine condensation particle counter as the particle detector. One new particle formation (NPF) event from each campaign was analyzed in detail. At a given instant in time during the NPF event, size-resolved growth rates were obtained directly from measured size distributions and were found to increase approximately linearly with particle size from {approx}1 to 3 nm geometric diameter, increasing from 5.5 {+-} 0.8 to 7.6 {+-} 0.6 nm h{sup -1} in Atlanta (13:00) and from 5.6 {+-} 2 to 27 {+-} 5 nm h{sup -1} in Boulder (13:00). The resulting growth rate enhancement {Lambda}, defined as the ratio of the observed growth rate to the growth rate due to the condensation of sulfuric acid only, was found to increase approximately linearly with size from {approx}1 to 3 nm geometric diameter. For the presented NPF events, values for {Lambda} had lower limits that approached {approx}1 at 1.2 nm geometric diameter in Atlanta and {approx}3 at 0.8 nm geometric diameter in Boulder, and had upper limits that reached 8.3 at 4.1 nm geometric diameter in Atlanta and 25 at 2.7 nm geometric diameter in Boulder. Nucleated particle survival probability calculations comparing the effects of constant and size-dependent growth indicate that neglecting the strong dependence of growth rate on size from 1 to 3 nm observed in this study could lead to a significant overestimation of CCN survival probability.

Kuang C.; Chen, M.; Zhao, J.; Smith, J.; McMurry, P. H.; Wang, J.

2012-04-12T23:59:59.000Z

59

Solid-state track recorder dosimetry device to measure absolute reaction rates and neutron fluence as a function of time  

DOE Patents (OSTI)

A solid state track recording type dosimeter is disclosed to measure the time dependence of the absolute fission rates of nuclides or neutron fluence over a period of time. In a primary species an inner recording drum is rotatably contained within an exterior housing drum that defines a series of collimating slit apertures overlying windows defined in the stationary drum through which radiation can enter. Film type solid state track recorders are positioned circumferentially about the surface of the internal recording drum to record such radiation or its secondary products during relative rotation of the two elements. In another species both the recording element and the aperture element assume the configuration of adjacent disks. Based on slit size of apertures and relative rotational velocity of the inner drum, radiation parameters within a test area may be measured as a function of time and spectra deduced therefrom.

Gold, Raymond (1393 George Washington Way, Suite No. 7, P.O. Box 944, Richland, WA 99352); Roberts, James H. (1393 George Washington Way, Suite No. 7, P.O. Box 944, Richland, WA 99352)

1989-01-01T23:59:59.000Z

60

High removal rate laser-based coating removal system  

DOE Patents (OSTI)

A compact laser system that removes surface coatings (such as paint, dirt, etc.) at a removal rate as high as 1000 ft.sup.2 /hr or more without damaging the surface. A high repetition rate laser with multiple amplification passes propagating through at least one optical amplifier is used, along with a delivery system consisting of a telescoping and articulating tube which also contains an evacuation system for simultaneously sweeping up the debris produced in the process. The amplified beam can be converted to an output beam by passively switching the polarization of at least one amplified beam. The system also has a personal safety system which protects against accidental exposures.

Matthews, Dennis L. (Moss Beach, CA); Celliers, Peter M. (Berkeley, CA); Hackel, Lloyd (Livermore, CA); Da Silva, Luiz B. (Danville, CA); Dane, C. Brent (Livermore, CA); Mrowka, Stanley (Richmond, CA)

1999-11-16T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

An overview of time-based and condition-based maintenance in industrial application  

Science Conference Proceedings (OSTI)

This paper presents an overview of two maintenance techniques widely discussed in the literature: time-based maintenance (TBM) and condition-based maintenance (CBM). The paper discusses how the TBM and CBM techniques work toward maintenance decision ... Keywords: Condition-based maintenance, Industrial application, Maintenance decision making, Maintenance techniques, Preventive maintenance, Time-based maintenance

Rosmaini Ahmad; Shahrul Kamaruddin

2012-08-01T23:59:59.000Z

62

Impacts of time-of-use rates on the optimal sizing and operation of cogeneration systems  

SciTech Connect

For customers with a cogeneration system (CGS), a mixed-integer programming and nonlinear programming model is used to examine effects of time-of-use (TOU) rates on the optimal operation of the constituent equipment as well as the optimal sizing. Three customers are selected for case studies: a hotel, a hospital, and an office building. Effects of an on-peak/off-peak energy charge ratio on purchased power share in the total electricity demand are saturated at the ratio of 5. As the energy charge ratio is raised, cheaper off-peak power substitutes for city gas and the operating cost decreases. The responses of the hotel and the hospital are similar. The simulation results included in this paper indicate that properly designed TOU rates can provide commercial customers an incentive to operate a CGS with an appropriate mix of the self-generation and commercial power.

Asano, H.; Sagai, S.; Imamura, E. (Central Research Inst. of Electric Power Industry, Tokyo (Japan)); Ito, K.; Yokoyama, R. (Osaka Prefectural Univ., Sakai (Japan))

1992-11-01T23:59:59.000Z

63

Adaptive time-frequency analysis based on autoregressive modeling  

Science Conference Proceedings (OSTI)

A new adaptive method for discrete time-frequency analysis based on autoregressive (AR) modeling is introduced. The performance of AR modeling often depends upon a good selection of the model order. The predictive least squares (PLS) principle of Rissanen ... Keywords: Adaptive filters, Autoregressive modeling, Least squares methods, Model order, Time-frequency analysis

Antonio H. Costa; Stephan Hengstler

2011-04-01T23:59:59.000Z

64

Signal processing for an acoustically based fetal heart rate monitor  

Science Conference Proceedings (OSTI)

A least?mean?square (lms) linear prediction algorithm has been developed to accomplish detection of fetal heart tones and thereby derive heart rate from a raw signal generated by a previously described passive acoustical sensor array. The desired heart tone signal has a characteristic signature but is of extremely low amplitude and contaminated with noise consisting of large?amplitude maternal heart tones

Robert A. Pretlow; John W. Stoughton

1991-01-01T23:59:59.000Z

65

Activity analysis based on low sample rate smart meters  

Science Conference Proceedings (OSTI)

Activity analysis disaggregates utility consumption from smart meters into specific usage that associates with human activities. It can not only help residents better manage their consumption for sustainable lifestyle, but also allow utility managers ... Keywords: classification, disaggregation, gaussian mixture model, hidden markov model, low sample rate, smart meter

Feng Chen; Jing Dai; Bingsheng Wang; Sambit Sahu; Milind Naphade; Chang-Tien Lu

2011-08-01T23:59:59.000Z

66

Run-time validation of knowledge-based systems  

Science Conference Proceedings (OSTI)

As knowledge bases become more complex it is increasingly unlikely that they will have been validated against all possible data and therefore an increasing risk of making errors. Run-time validation is checking whether the output of a knowledge base ... Keywords: anomalies, outliers, prudence, ripple-down rules, validation

Angela Finlayson, Paul Compton

2013-06-01T23:59:59.000Z

67

The Ocean’s Memory of the Atmosphere: Residence-Time and Ventilation-Rate Distributions of Water Masses  

Science Conference Proceedings (OSTI)

A conceptually new approach to diagnosing tracer-independent ventilation rates is developed. Tracer Green functions are exploited to partition ventilation rates according to the ventilated fluid’s residence time in the ocean interior and ...

François W. Primeau; Mark Holzer

2006-07-01T23:59:59.000Z

68

High removal rate laser-based coating removal system  

Science Conference Proceedings (OSTI)

A compact laser system is disclosed that removes surface coatings (such as paint, dirt, etc.) at a removal rate as high as 1,000 ft{sup 2}/hr or more without damaging the surface. A high repetition rate laser with multiple amplification passes propagating through at least one optical amplifier is used, along with a delivery system consisting of a telescoping and articulating tube which also contains an evacuation system for simultaneously sweeping up the debris produced in the process. The amplified beam can be converted to an output beam by passively switching the polarization of at least one amplified beam. The system also has a personal safety system which protects against accidental exposures.

Matthews, D.L.; Celliers, P.M.; Hackel, L.; Da Silva, L.B.; Dane, C.B.; Mrowka, S.

1999-11-16T23:59:59.000Z

69

Controlling the Biodegradation Rate of Magnesium-Based Implants ...  

Science Conference Proceedings (OSTI)

Author(s), Z. Pu, D. Puleo, O.W. Dillon, Jr., I.S. Jawahir. On-Site ... By proper selection of machining conditions, magnesium-based implants with customized ...

70

Attenuation-Based Estimates of Rainfall Rates Aloft with Vertically Pointing Ka-Band Radars  

Science Conference Proceedings (OSTI)

An approach is suggested to retrieve low-resolution rainfall rate profiles and layer-averaged rainfall rates, Ra, from radar reflectivity measurements made by vertically pointing Ka-band radars. This approach is based on the effects of ...

Sergey Y. Matrosov

2005-01-01T23:59:59.000Z

71

Distribution Based Data Filtering for Financial Time Series Forecasting  

E-Print Network (OSTI)

of stock prices, which aims to forecast the future values of the price of a stock, in order to obtain/selling strategies to gain competitive advantage. Classic and popular methods for stock price forecasting [3Distribution Based Data Filtering for Financial Time Series Forecasting Goce Ristanoski1 , James

Bailey, James

72

On enhancing H.264/AVC video rate control by PSNR-based frame complexity estimation  

Science Conference Proceedings (OSTI)

In this paper, we present a PSNR-based frame complexity estimation to improve H.264/AVC rate control. Our scheme is based on adding PSNR-based complexity estimation to the existing mean absolute difference based (MAD-based) complexity measure to form ...

Minqiang Jiang; Nam Ling

2005-02-01T23:59:59.000Z

73

Effect of Cooling Rate on the Fatigue Life of a Nickel-Base ...  

Science Conference Proceedings (OSTI)

Presentation Title, Effect of Cooling Rate on the Fatigue Life of a Nickel-Base ... The Zinagizado Processes as New Electrochemical Alternative to Prevent the ...

74

A matrix-based methodology for determining a part family's learning rate  

Science Conference Proceedings (OSTI)

Learning is a decrease in the time to perform an operation due to repetition and is an important consideration when forecasting process times or product costs. This paper presents a new method for calculating the learning rate for a family of parts using ... Keywords: Cost estimation, Family learning rate, Learning

William A. Young, II; Dale T. Masel; Robert P. Judd

2008-04-01T23:59:59.000Z

75

High Efficiency and High Rate Deposited Amorphous Silicon-Based Solar Cells  

E-Print Network (OSTI)

of a triple cell showing 10.7% stable efficiency. Figure 4-1 Schematic diagram of the Hot Wire CVD deposition. Task 7: High-rate deposition of a-Si based solar cells We have conducted extensive research using a hot1 High Efficiency and High Rate Deposited Amorphous Silicon-Based Solar Cells PHASE I Annual

Deng, Xunming

76

Pricing Electricity for Default Customers: Pass Through or Performance-Based Rates?  

E-Print Network (OSTI)

PWP-066 Pricing Electricity for Default Customers: Pass Through or Performance-Based Rates? Carl;1 Pricing Electricity for Default Customers: Pass Through or Performance-Based Rates? Carl Blumstein1 August 1999 Abstract California electricity consumers can choose a retail electricity service provider

California at Berkeley. University of

77

Effects of consumers' attitudes and knowledge on the acceptance and utilization of time-of-use rates: Edmond, Oklahoma. Final report  

SciTech Connect

The Edmond, Oklahoma, Time-of-use (TOU) Rate Demonstration Project was concerned with the effects of various TOU rate schedules on consumers' electrical usage. Both total usage and temporal patterns of electric consumption were studied in this demonstration. This report summarizes the results of a series of secondary analyses of data based on exit and followup surveys. These analyses were focused principally on the effects of consumers' knowledge of, and attitudes toward, the TOU rate structure to which they were assigned, and the impact of these reactions on their electric usage, relative to that of a comparable group of consumers.

Crano, W.D.; Messe, L.A.; Buldain, R.W.; Johnson, C.D.

1980-08-01T23:59:59.000Z

78

Minihalo photoevaporation during cosmic reionization: evaporation times and photon consumption rates  

E-Print Network (OSTI)

The weak, R-type ionization fronts (I-fronts) which swept across the intergalactic medium (IGM) during the reionization of the universe often found their paths blocked by cosmological minihaloes. When this happened, the neutral gas which filled each minihalo was photoevaporated; as the I-front burned its way through the halo, decelerating from R-type to D-type, all the gas was blown back into the IGM as an ionized, supersonic wind. In a previous paper (Shapiro, Iliev and Raga 2004), we described this process and presented our results of the first simulations of it by numerical gas dynamics with radiation transport in detail. For illustration we focused on the particular case of a 10^7 solar masses minihalo overrun at z=9 by an intergalactic I-front caused by a distant source of ionizing radiation, for different source spectra (either stellar from massive Pop. II or III stars, or QSO-like) and a flux level typical of that expected during reionization. In a LambdaCDM universe, minihaloes formed in abundance before and during reionization and, thus, their photoevaporation is an important, possibly dominant, feature of reionization, which slowed it down and wasted ionizing photons. We have now performed a larger set of high-resolution simulations to determine and quantify the dependence of minihalo photoevaporation times and photon consumption rates on halo mass, redshift, ionizing flux level and spectrum. We find that the average number of ionizing photons each minihalo atom absorbs during its photoevaporation is typically in the range 2-10. For the collapsed fraction in minihaloes expected during reionization, this can add about 1 photon per total atom to the requirements for completing reionization, potentially doubling the minimum number of photons required to reionize the universe.

Ilian T. Iliev; Paul R. Shapiro; Alejandro C. Raga

2004-08-23T23:59:59.000Z

79

The Efficacy of Electric Vehicle Time-of-Use Rates in Guiding Plug-in Hybrid Electric Vehicle Charging Behavior  

Science Conference Proceedings (OSTI)

This paper presents a series of analyses that seek to enhance understanding of the extent to which time-of-use (TOU) rates can economically incentivize off-peak charging of plug-in hybrid electric vehicles (PHEV). The total cost of fueling a PHEV under modeled and real-world TOU rates is compared to the total cost of fueling a PHEV under constant rates. Time-resolved vehicle energy consumption and fueling costs for a variety of PHEV designs are derived from travel survey data and charging behavior models...

2011-12-20T23:59:59.000Z

80

Impact of Time Resolution on the Projected Rates of System Penetration by Intermittent Generation Technologies  

SciTech Connect

To hedge against the limited resources of fossil fuels and to reduce the emissions of green house gases, it is expected that our future electricity system will include more intermittent technologies, including wind and PV. To better understand how to develop energy systems that rely on intermittents, systems models are used to assess the cost at which intermittents become competitive, the degree of penetration as their costs are reduced, their impact on the optimal structure of the balance of the system, and their affect on total system costs. Modeling approaches designed for dispatchable technologies are not entirely appropriate for modeling intermittent technologies, since they, naturally, assume that generation can always be dispatched to meet demand. Intermittent generation cannot be dispatched--its output varies from hour to hour and from day to day on its own schedule, heedless to system needs. This research assesses the difference in results associated with the different approaches to modeling intermittency. The analyses compare cases using the hourly loads and intermittent generation patterns, cases in which the loads and generation were averaged over several hours, and cases in which the loads and/or the generation were represented by the annual averaging scheme used in the National Energy Modeling System developed by the Energy Information Administration. Three significant characteristics of an intermittent generator are the average power production (capacity factor), the coincidence of its power production and loads, and the variation in the magnitude of its power production. Economic models of the energy system represent these characteristics with differing degrees of accuracy. It is expected that different representations of the characteristics of an intermittent generator will give different answers to the sorts of questions posed above. This research assesses the magnitude and types of errors that are introduced by not representing the characteristics of the intermittents accurately. The most accurate representation of an intermittent generator uses its actual output from moment to moment. Here we use a one hour resolution over a full year of generation as the base case. This captures the variations from hour to hour and day-to-day. However, some energy modeling systems are based on a load duration curve approach for characterizing the variation in energy demand. This is quite suitable for dispatchable technologies since the generators can always be dispatched to meet the load whenever it occurs. When an intermittent generator is represented in this structure, it is represented as having a constant output equal to its capacity factor over long intervals (many hours). This approach captures the capacity factor of the intermittent and to some extent it can capture the coincidence of generation and demand, but does not capture the effect of the short term variations in output. In this paper, we evaluate the impacts of time resolution on the economic evaluation of wind and solar PV within a simple energy system. We assess the penetration of each intermittent generator as its cost is decreased. At the same time, the model optimally readjusts the capacities and dispatch of the conventional generators as the intermittent technology penetrates. This investigation compares the trajectories of intermittent penetration under a several different representations of intermittent generation and demand. In the following sections, we first discuss the approach to analysis, for both the load duration curve approach to representing intermittent generation and several averaging schemes. We then present results and conclusions.

Lamont, A; Wu, T

2006-07-18T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

Climatologically Tuned Reflectivity-Rain Rate Relations and Links to Area-Time Integrals  

Science Conference Proceedings (OSTI)

Relations between either the point- or beam-averaged effective reflectivity, Ze, and surface rain rate, R, are determined by a probability matching method similar to that of Calheiros and Zawadzki, and Rosenfeld. The cumulative density functions (...

David Atlas; Daniel Rosenfeld; David B. Wolff

1990-11-01T23:59:59.000Z

82

Reflectivity, Rain Rate, and Kinetic Energy Flux Relationships Based on Raindrop Spectra  

Science Conference Proceedings (OSTI)

The relationships between radar reflectivity factor Z, rainfall rate R, and rainfall kinetic energy flux E were analyzed based on a multiyear raindrop spectra dataset recorded by a Joss–Waldvogel disdrometer in the Goodwin Creek research ...

Matthias Steiner; James A. Smith

2000-11-01T23:59:59.000Z

83

A general rate K/N convolutional decoder based on neural networks with stopping criterion  

Science Conference Proceedings (OSTI)

A novel algorithm for decoding a general rate K/Nconvolutional code based on recurrent neural network (RNN) is described and analysed. The algorithm is introduced by outlining the mathematical models of the encoder and decoder. A number of strategies ...

Johnny W. H. Kao; Stevan M. Berber; Abbas Bigdeli

2009-01-01T23:59:59.000Z

84

Highly charged ion based time of flight emission microscope  

DOE Patents (OSTI)

A highly charged ion based time-of-flight emission microscope has been designed, which improves the surface sensitivity of static SIMS measurements because of the higher ionization probability of highly charged ions. Slow, highly charged ions are produced in an electron beam ion trap and are directed to the sample surface. The sputtered secondary ions and electrons pass through a specially designed objective lens to a microchannel plate detector. This new instrument permits high surface sensitivity (10.sup.10 atoms/cm.sup.2), high spatial resolution (100 nm), and chemical structural information due to the high molecular ion yields. The high secondary ion yield permits coincidence counting, which can be used to enhance determination of chemical and topological structure and to correlate specific molecular species.

Barnes, Alan V. (Livermore, CA); Schenkel, Thomas (San Francisco, CA); Hamza, Alex V. (Livermore, CA); Schneider, Dieter H. (Livermore, CA); Doyle, Barney (Albuquerque, NM)

2001-01-01T23:59:59.000Z

85

Fast distortion measurement using chord-length parameterisation within the vertex-based rate-distortion optimal shape coding framework  

E-Print Network (OSTI)

Existing vertex-based operational rate-distortion (ORD) optimal shape coding algorithms use the shortest absolute distance (SAD) or alternatively either the distortion band (DB) or tolerance band (TB) as their distortion measuring technique. Each approach however can lead to inaccurate distortion measurements, though these can be avoided by employing the accurate distortion measurement technique for shape coding (ADMSC). From a computational time 2 O N time for DB and TB for both polygon and B-spline based encoding, perspective, an N point contour requires () 2 while SAD and ADMSC incur order O ( N) time for polygonal encoding, but ( N) O complexity for B-spline based encoding, thereby rendering ORD optimal algorithms computationally inefficient. This paper presents a novel distortion measurement strategy based on chord-length parameterisation (DMCLP) of a boundary that incurs order O ( N) complexity for both polygon and B-spline based encoding, while preserving an analogous rate-distortion performance to the original ORD optimal shape coding algorithms, when it is embedded within the ORD framework. I.

Ferdous A. Sohel; Gour C. Karmakar; Laurence S. Dooley

2007-01-01T23:59:59.000Z

86

PRESSURE AND TEMPERATURE DEPENDENT DEFLAGRATION RATE MEASUREMENTS OF LLM-105 AND TATB BASED EXPLOSIVES  

Science Conference Proceedings (OSTI)

The pressure dependent deflagration rates of LLM-105 and TATB based formulations were measured in the LLNL high pressure strand burner. The role of binder amount, explosive type, and thermal damage and their effects on the deflagration rate will be discussed. Two different formulations of LLM-105 and three formulations of TATB were studied and results indicate that binder amount and type play a minor role in the deflagration behavior. This is in sharp contrast to the HMX based formulations which strongly depend on binder amount and type. The effect of preheating these samples was considerably more dramatic. In the case of LLM-105, preheating the sample appears to have little effect on the deflagration rate. In contrast, preheating TATB formulations causes the deflagration rate to accelerate and become erratic. The thermal and mechanical properties of these formulations will be discussed in the context of their pressure and temperature dependent deflagration rates.

Glascoe, E A; Tan, N; Koerner, J; Lorenz, K T; Maienschein, J L

2009-11-10T23:59:59.000Z

87

Real-time automatic interpolation of ambient gamma dose rates from the Dutch radioactivity monitoring network  

Science Conference Proceedings (OSTI)

Detection of radiological accidents and monitoring the spread of the contamination is of great importance. Following the Chernobyl accident many European countries have installed monitoring networks to perform this task. Real-time availability of automatically ... Keywords: Automatic interpolation, Interoperability, Kriging, Monitoring networks, Web services

Paul H. Hiemstra; Edzer J. Pebesma; Chris J. W. Twenhöfel; Gerard B. M. Heuvelink

2009-08-01T23:59:59.000Z

88

Electricity Rate Structures and the Economics of Solar PV: Could Mandatory Time-of-Use Rates Undermine California’s Solar Photovoltaic Subsidies?  

E-Print Network (OSTI)

CSEM WP 172 Electricity Rate Structures and the Economics of94720-5180 www.ucei.org Electricity Rate Structures and thefuture of California electricity rate levels and rate design

Borenstein, Severin

2007-01-01T23:59:59.000Z

89

Analysis of Experiments Exhibiting Time-Varying Nuclear Decay Rates: Systematic Effects or New Physics?  

E-Print Network (OSTI)

Since the 1930s, and with very few exceptions, it has been assumed that the process of radioactive decay is a random process, unaffected by the environment in which the decaying nucleus resides. There have been instances within the past few decades, however, where changes in the chemical environment or physical environment brought about small changes in the decay rates. But even in light of these instances, decaying nuclei that were undisturbed or un-"pressured" were thought to behave in the expected random way, subject to the normal decay probabilities which are specific to each nuclide. Moreover, any "non-random" behavior was assumed automatically to be the fault of the detection systems, the environment surrounding the detectors, or changes in the background radiation to which the detector was exposed. Recently, however, evidence has emerged from a variety of sources, including measurements taken by independent groups at Brookhaven National Laboratory, Physikalisch-Technische Bundesanstalt, and Purdue University, that indicate there may in fact be an influence that is altering nuclear decay rates, albeit at levels on the order of $10^{-3}$. In this paper, we will discuss some of these results, and examine the evidence pointing to the conclusion that the intrinsic decay process is being affected by a solar influence.

Jere H. Jenkins; Ephraim Fischbach; Peter A. Sturrock; Daniel W. Mundy

2011-06-08T23:59:59.000Z

90

Analysis of environmental influences in nuclear half-life measurements exhibiting time-dependent decay rates  

E-Print Network (OSTI)

In a recent series of papers evidence has been presented for correlations between solar activity and nuclear decay rates. This includes an apparent correlation between Earth-Sun distance and data taken at Brookhaven National Laboratory (BNL), and at the Physikalisch-Technische Bundesanstalt (PTB). Although these correlations could arise from a direct interaction between the decaying nuclei and some particles or fields emanating from the Sun, they could also represent an "environmental" effect arising from a seasonal variation of the sensitivities of the BNL and PTB detectors due to changes in temperature, relative humidity, background radiation, etc. In this paper, we present a detailed analysis of the responses of the detectors actually used in the BNL and PTB experiments, and show that sensitivities to seasonal variations in the respective detectors are likely too small to produce the observed fluctuations.

Jere H. Jenkins; Daniel W. Mundy; Ephraim Fischbach

2009-12-29T23:59:59.000Z

91

NABERS: Lessons from 12 Years of Performance Based Ratings in Australia  

E-Print Network (OSTI)

The National Australian Built Environment Rating System (NABERS) has been operating for 12 years as a performance based rating system for the energy/greenhouse efficiency of office buildings in Australia. During this period, the scheme has been expanded to include performance based energy and water ratings for offices, hotels and shopping centres, plus performance based rating tools for office indoor environment and waste. NABERS has achieved significant success in transforming the energy efficiency of the office building stock, particularly with respect to the landlord operated services in the higher-quality end of the market. NABERS ratings have become established as a core valuation in the market for sale or lease of these buildings. The declaration of NABERS ratings has recently become mandatory for commercial sale and lease transactions over 2000m2. In this paper, the history of the NABERS scheme is outlined, with particular emphasis on the key lessons learnt and the underlying factors that have contributed to successes and failures along the way. Directions for future development are also discussed.

Bannister, P.

2012-01-01T23:59:59.000Z

92

Time-dependent corrections to effective rate and event statistics in Michaelis-Menten kinetics  

E-Print Network (OSTI)

We generalize the concept of the geometric phase in stochastic kinetics to a noncyclic evolution. Its application is demonstrated on kinetics of the Michaelis-Menten reaction. It is shown that the nonperiodic geometric phase is responsible for the correction to the Michaelis-Menten law when parameters, such as a substrate concentration, are changing with time. We apply these ideas to a model of chemical reactions in a bacterial culture of a growing size, where the geometric correction qualitatively changes the outcome of the reaction kinetics.

Sinitsyn, N A

2010-01-01T23:59:59.000Z

93

Real-Time Precipitation Estimation Based on Index Station Percentiles  

Science Conference Proceedings (OSTI)

Operational hydrologic models are typically calibrated using meteorological inputs derived from retrospective station data that are commonly not available in real time. Inconsistencies between the calibration and (generally sparser) real-time ...

Qiuhong Tang; Andrew W. Wood; Dennis P. Lettenmaier

2009-02-01T23:59:59.000Z

94

Real time cross-layer adaptation for minimum energy wireless image transport using bit error rate control  

Science Conference Proceedings (OSTI)

In wireless multimedia systems, significant power is consumed in processing image/video content This research looks specifically at the energy cost of wireless image/video transport focusing on image quality as an end metric. The quality of received ... Keywords: PSNR values, real-time cross-layer adaptation, minimum-energy wireless image transport, bit error rate control, wireless multimedia systems, wireless image-video content processing, communication channel, image-video data compression, received signal quality, minimal RF energy consumption, optimization procedure, varying channel conditions, baseband signal, RF power amplifier, RF PA, optimal transmission bit error rate value, closed loop feedback control

J. Natarajan; S. Sen; A. Chatterjee

2011-07-01T23:59:59.000Z

95

Time-based intrusion detection in cyber-physical systems  

Science Conference Proceedings (OSTI)

Embedded systems, particularly real-time systems with temporal constraints, are increasingly deployed in every day life. Such systems that interact with the physical world are also referred to as cyber-physical systems (CPS). These systems commonly find ... Keywords: cyber-physical systems, real-time systems, security, timing analysis

Christopher Zimmer; Balasubramanya Bhat; Frank Mueller; Sibin Mohan

2010-04-01T23:59:59.000Z

96

Bispectral-based methods for clustering time series  

Science Conference Proceedings (OSTI)

Distinguishing among linear and nonlinear time series or between nonlinear time series generated by different underlying processes is challenging, as second-order properties are generally insufficient for the task. Different nonlinear processes have ... Keywords: Bispectral density function, Hierarchical clustering, Nonlinear time series

Jane L. Harvill, Nalini Ravishanker, Bonnie K. Ray

2013-08-01T23:59:59.000Z

97

SumTime-Turbine: A Knowledge-Based System to Communicate Gas Turbine Time-Series Data  

E-Print Network (OSTI)

SumTime-Turbine: A Knowledge-Based System to Communicate Gas Turbine Time-Series Data Jin Yu produces textual summaries of archived time- series data from gas turbines. These summaries should help evaluated. 1 Introduction In order to get the most out of gas turbines, TIGER [2] has been developed

Reiter, Ehud

98

A new time-invariant fuzzy time series forecasting method based on genetic algorithm  

Science Conference Proceedings (OSTI)

In recent years, many fuzzy time series methods have been proposed in the literature. Some of these methods use the classical fuzzy set theory, which needs complex matricial operations in fuzzy time series methods. Because of this problem, many studies ...

Erol E?rio?lu

2012-01-01T23:59:59.000Z

99

Rates of contraction of posterior distributions based on Gaussian process priors  

E-Print Network (OSTI)

We derive rates of contraction of posterior distributions on nonparametric or semiparametric models based on Gaussian processes. The rate of contraction is shown to depend on the position of the true parameter relative to the reproducing kernel Hilbert space of the Gaussian process and the small ball probabilities of the Gaussian process. We determine these quantities for a range of examples of Gaussian priors and in several statistical settings. For instance, we consider the rate of contraction of the posterior distribution based on sampling from a smooth density model when the prior models the log density as a (fractionally integrated) Brownian motion. We also consider regression with Gaussian errors and smooth classification under a logistic or probit link function combined with various priors.

Van der Vaart, A W

2008-01-01T23:59:59.000Z

100

High-repetition-rate femtosecond optical parametric oscillator based on periodically poled lithium niobate  

E-Print Network (OSTI)

High-repetition-rate femtosecond optical parametric oscillator based on periodically poled lithium periodically poled lithium niobate is described. This optical parametric oscillator is continuously tunable American Institute of Physics. S0003-6951 97 04325-8 Periodically poled lithium niobate PPLN has emerged

Fejer, Martin M.

Note: This page contains sample records for the topic "time based rate" 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

Gas Emission Rate Prediction in Fully-Mechanized Excavated Faces Based on Support Vector Machine  

Science Conference Proceedings (OSTI)

In order to ensure safety in coal production, full assurance is given for fully-mechanized excavated faces. Based on the vector supporting machine for regression (SVR), a model is established for predicting the gas emission in fully-mechanized excavated ... Keywords: SVM, Tracking, emission rate, fully-mechanized excavated faces, gas prediction

Wang Changlong; Fu Weihua

2009-11-01T23:59:59.000Z

102

Assessing Accelerator-Based HPC Reverse Time Migration  

Science Conference Proceedings (OSTI)

Oil and gas companies trust Reverse Time Migration (RTM), the most advanced seismic imaging technique, with crucial decisions on drilling investments. The economic value of the oil reserves that require RTM to be localized is in the order of 10^{13} ... Keywords: Reverse time migration, accelerators, GPU, Cell/B.E., FPGA, geophysics.

Mauricio Araya-Polo; Javier Cabezas; Mauricio Hanzich; Miquel Pericas; Felix Rubio; Isaac Gelado; Muhammad Shafiq; Enric Morancho; Nacho Navarro; Eduard Ayguade; Jose Maria Cela; Mateo Valero

2011-01-01T23:59:59.000Z

103

A Method to Determine the Optimal Tank Size for a Chilled Water Storage System Under a Time-of-Use Electricity Rate Structure  

E-Print Network (OSTI)

In the downtown area of Austin, it is planned to build a new naturally stratified chilled water storage tank and share it among four separated chilled water plants. An underground piping system is to be established to connect these four plants together. This paper presents the method of determining the optimal tank size as well as corresponding optimal operating strategies for this project. Based on the analysis of the historical log data, utility rate structures, and equipment information, the baseline profiles of electricity fed to buildings, plant cooling load, and utility billing cost for each plant are generated. A simplified TES plus four plants model is built based on some assumptions. The results show that a 3.5 million gallon tank has the shortest payback time and the projected total capital cost is within the budget. The annual billing cost savings are $907,231 and the simple payback time is 12.5 years.

Zhang, Z.; Turner, W. D.; Chen, Q.; Xu, C.; Deng, S.

2010-01-01T23:59:59.000Z

104

Fragment-based Time-dependent Density-functional Theory  

E-Print Network (OSTI)

Using the Runge-Gross theorem that establishes the foundation of Time-dependent Density Functional Theory (TDDFT) we prove that for a given electronic Hamiltonian, choice of initial state, and choice of fragmentation, there is a unique single-particle potential (dubbed time-dependent partition potential) which, when added to each of the pre-selected fragment potentials, forces the fragment densities to evolve in such a way that their sum equals the exact molecular density at all times. This uniqueness theorem suggests new ways of computing time-dependent properties of electronic systems via fragment-TDDFT calculations. We derive a formally exact relationship between the partition potential and the total density, and illustrate our approach on a simple model system for binary fragmentation in a laser field.

Mosquera, Martin A; Wasserman, Adam

2013-01-01T23:59:59.000Z

105

Real-time concepts for block-based watermarking schemes  

Science Conference Proceedings (OSTI)

In this paper we propose a concept to transfer a non real-time watermarking system into a watermarking system, which meets the requirements of a media-on-demand system. Several applications scenarios requiring the embedding of watermarks with maximum ...

Michael Arnold; Oliver Lobisch

2002-12-01T23:59:59.000Z

106

Electricity Rate Structures and the Economics of Solar PV: Could Mandatory Time-of-Use Rates Undermine California’s Solar Photovoltaic Subsidies?  

E-Print Network (OSTI)

and the Economics of Solar PV: Could Mandatory Time-of-Useand the Economics of Solar PV: Could Mandatory Time-of-Usethat recipients of the solar PV subsidies go on time-of-

Borenstein, Severin

2007-01-01T23:59:59.000Z

107

ENTROPY-BASED VARIABLE FRAME RATE ANALYSIS OF SPEECH SIGNALS AND ITS APPLICATION TO ASR  

E-Print Network (OSTI)

of features without a degradation in acoustic modelling. It also verifies that the technique in [1] improves acoustic modelling in noise and that [1] outperforms the other VFR techniques in recogni- tion experiments achieve a more reliable frame-picking decision based on a longer time span spectral information

Alwan, Abeer

108

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

E-Print Network (OSTI)

The optical system was based around a commercially available Meade LX200 catadioptric Schmidt a collection fiber and camera in the image plane of the telescope; and c optical routing: an optical routing- get and focused it onto an optical fiber core. This fiber was positioned in the image plane

Buller, Gerald S.

109

Electric Utility Rate Design Study: embedded generation costs on a time-of-day basis for Iowa Southern Utilities Company  

SciTech Connect

This report develops a method for determining average embedded generation costs on a time-of-day basis and describes the application of the method to Iowa Southern Utilities. These costs are not allocated to customer classes. Since average embedded costs are composed of the running (or variable) costs and the capital costs, the analysis examines each of these separately. Running costs on a time-of-day basis are determined through the use of a generation dispatch model that reports the loadings by generating unit and the running costs of meeting the load. These costs are reported on an hour-by-hour basis. The dispatch model takes into account the operating characteristics of each unit and the major engineering constraints on a system; e.g., must-run units, minimum up and down time, startup cost. After reviewing several suggested capital-cost allocation procedures, a method is developed that allocates capital costs on a time-of-day basis by using a recontracting-for-capacity procedure that allows capacity to vary by hour for each month. The method results in allocations to customers who benefit from its use. An important and distinguishing feature of this method is that it allows calculation of the costs before rating periods are chosen.

1980-01-01T23:59:59.000Z

110

Analysis of Customer Enrollment Patterns in TIme-Based Rate Programs...  

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

are implemented in conjunction with the deployment of advanced metering infrastructure (AMI) and customer systems such as in-home displays (IHDs) and programmable communicating...

111

Detecting Relay Attacks with Timing-Based Protocols  

E-Print Network (OSTI)

Abstract. Distance bounding protocols have been proposed as means of detecting relay attacks, also known as mafia fraud. In this paper we present the first symmetric key based distance bounding protocol that is also resistant to so-called terrorist fraud, a variant of mafia fraud. Relay attacks present a serious threat to RF security devices (contactless smart cards, RFID tags and the like) because they undermine the implicit assumption that the device is physically close to the reader when it is operating. In applications such as physical access control this assumption of physical proximity is all-important. Distance bounding protocols require a communication channel that can exchange single bits with extremely low latency. This unconventional communication requirement has prompted Hancke and Kuhn to assert in a recent publication [12] that ultra wide band (UWB) radio is necessary to achieve a useful distance bounding resolution. We analyse this assertion and present a alternative, novel communication approach that leverages the phenomena of side channel leakage to deliver a low latency channel. Our proposal is capable of detecting sophisticated relay attacks without resorting to the considerable expense and complexity of UWB radio. We present experimental results to support our arguments. 1

Jason Reid; Juan M. González Nieto; Tee Tang; Bouchra Senadji

2007-01-01T23:59:59.000Z

112

A Field-Deployable Real-Time Laser-Based Non-Intrusive Detection System for Measurement of True Travel Time on the Highway  

E-Print Network (OSTI)

A Real- Time Laser-Based Detection System for Measurement ofTime Laser- Based Prototype Detection System for MeasurementLaser-Based Non-Intrusive Detection System for Measurement

Cheng, Harry H.; Shaw, Ben; Palen, Joe; Wang, Zhaoqing; Chen, Bo

2002-01-01T23:59:59.000Z

113

A metric time-point and duration-based temporal model  

Science Conference Proceedings (OSTI)

Constraint-based formalisms are a useful and common way to deal with temporal reasoning tasks. Assertions represent temporal constraints between temporal objects, time-points or intervals: Metric temporal constraints between time points permit us to ...

Federico A. Barber

1993-07-01T23:59:59.000Z

114

Steady State Microbunching for High Brilliance and High Repetition Rate Storage Ring-Based Light Sources  

SciTech Connect

Electron-based light sources have proven to be effective sources of high brilliance, high frequency radiation. Such sources are typically either linac-Free Electron Laser (FEL) or storage ring types. The linac-FEL type has high brilliance (because the beam is microbunched) but low repetition rate. The storage ring type has high repetition rate (rapid beam circulation) but comparatively low brilliance or coherence. We propose to explore the feasibility of a microbunched beam in a storage ring that promises high repetition rate and high brilliance. The steady-state-micro-bunch (SSMB) beam in storage ring could provide CW sources for THz, EUV, or soft X-rays. Several SSMB mechanisms have been suggested recently, and in this report, we review a number of these SSMB concepts as promising directions for high brilliance, high repetition rate light sources of the future. The trick of SSMB lies in the RF system, together with the associated synchrotron beam dynamics, of the storage ring. Considering various different RF arrangements, there could be considered a number of scenarios of the SSMB. In this report, we arrange these scenarios more or less in order of the envisioned degree of technical challenge to the RF system, and not in the chronological order of their original references. Once the stored beam is steady-state microbunched in a storage ring, it passes through a radiator repeatedly every turn (or few turns). The radiator extracts a small fraction of the beam energy as coherent radiation with a wavelength corresponding to the microbunched period of the beam. In contrast to an FEL, this radiator is not needed to generate the microbunching (as required e.g. by SASE FELs or seeded FELs), so the radiator can be comparatively simple and short.

Chao, Alex; Ratner, Daniel; /SLAC; Jiao, Yi; /Beijing, Inst. High Energy Phys.

2012-09-06T23:59:59.000Z

115

New Web-based System Leads to Better, More Timely Data  

Science Conference Proceedings (OSTI)

New Web-based System Leads to Better, More Timely Data. For Immediate Release: October 26, 2006. ... Web Release Date: October 11, 2006. ...

2012-11-01T23:59:59.000Z

116

Real-Time Bias Reduction for Satellite-Based Precipitation Estimates  

Science Conference Proceedings (OSTI)

A new approach to reduce biases in satellite-based estimates in real time is proposed and tested in this study. Currently satellite-based precipitation estimates exhibit considerable biases, and there have been many efforts to reduce these biases ...

Yudong Tian; Christa D. Peters-Lidard; John B. Eylander

2010-12-01T23:59:59.000Z

117

Four-dimensional dose distributions of step-and-shoot IMRT delivered with real-time tumor tracking for patients with irregular breathing: Constant dose rate vs dose rate regulation  

SciTech Connect

Purpose: Dose-rate-regulated tracking (DRRT) is a tumor tracking strategy that programs the MLC to track the tumor under regular breathing and adapts to breathing irregularities during delivery using dose rate regulation. Constant-dose-rate tracking (CDRT) is a strategy that dynamically repositions the beam to account for intrafractional 3D target motion according to real-time information of target location obtained from an independent position monitoring system. The purpose of this study is to illustrate the differences in the effectiveness and delivery accuracy between these two tracking methods in the presence of breathing irregularities. Methods: Step-and-shoot IMRT plans optimized at a reference phase were extended to remaining phases to generate 10-phased 4D-IMRT plans using segment aperture morphing (SAM) algorithm, where both tumor displacement and deformation were considered. A SAM-based 4D plan has been demonstrated to provide better plan quality than plans not considering target deformation. However, delivering such a plan requires preprogramming of the MLC aperture sequence. Deliveries of the 4D plans using DRRT and CDRT tracking approaches were simulated assuming the breathing period is either shorter or longer than the planning day, for 4 IMRT cases: two lung and two pancreatic cases with maximum GTV centroid motion greater than 1 cm were selected. In DRRT, dose rate was regulated to speed up or slow down delivery as needed such that each planned segment is delivered at the planned breathing phase. In CDRT, MLC is separately controlled to follow the tumor motion, but dose rate was kept constant. In addition to breathing period change, effect of breathing amplitude variation on target and critical tissue dose distribution is also evaluated. Results: Delivery of preprogrammed 4D plans by the CDRT method resulted in an average of 5% increase in target dose and noticeable increase in organs at risk (OAR) dose when patient breathing is either 10% faster or slower than the planning day. In contrast, DRRT method showed less than 1% reduction in target dose and no noticeable change in OAR dose under the same breathing period irregularities. When {+-}20% variation of target motion amplitude was present as breathing irregularity, the two delivery methods show compatible plan quality if the dose distribution of CDRT delivery is renormalized. Conclusions: Delivery of 4D-IMRT treatment plans, stemmed from 3D step-and-shoot IMRT and preprogrammed using SAM algorithm, is simulated for two dynamic MLC-based real-time tumor tracking strategies: with and without dose-rate regulation. Comparison of cumulative dose distribution indicates that the preprogrammed 4D plan is more accurately and efficiently conformed using the DRRT strategy, as it compensates the interplay between patient breathing irregularity and tracking delivery without compromising the segment-weight modulation.

Yang Xiaocheng; Han-Oh, Sarah; Gui Minzhi; Niu Ying; Yu, Cedric X.; Yi Byongyong [Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland 21201 (United States); Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231 (United States); Medical Physics Division, Saint Agnes Cancer Center, Baltimore, Maryland 21229 (United States); Department of Physics, George Washington University, Washington, DC 20052 (United States); Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland 21201 (United States)

2012-09-15T23:59:59.000Z

118

Vector Time Management Based on Topology Information for HLA/RTI  

Science Conference Proceedings (OSTI)

Aimed to reduce the overheads using the Time Management (TM) in HLA based distributed simulations, the TM based on publish-subscribe topology information is investigated. The condition under which the message may be received before its causal predecessor ... Keywords: Time management, Vector clock, Causal order, Topology information, Algorithms

Chunpeng Chen; Hongjin Jia

2012-07-01T23:59:59.000Z

119

Study of the Optimum Extraction of Coal Resources Based on the Rate of Comprehensive Extraction  

Science Conference Proceedings (OSTI)

Low efficiency and waste are the main problems in the process of coal resources extraction in China. Taking the utilization and recovery rate into account, the article has analyzed the factors influencing the utilization and recovery rate and given some ... Keywords: Coal Resources, Utilization Rate, Recovery Rate, Resource Taxes, Dynamic Optimization

Sun Dachao; Wei Xiaoping; Lu Nan

2010-05-01T23:59:59.000Z

120

System Demonstration: Interactive GIS-based interface for time-critical application  

Science Conference Proceedings (OSTI)

Many time-critical applications, such as emergency evacuation, demand decision-makers to make prompt decisions under time pressure. Therefore, it is essential to design an intuitive and interactive user interface to present critical information to users ... Keywords: GIS-based, UI, time-critical

Wenjuan Fan; Anhong Ling; Xiang Li; Gang Liu; Jian Zhan; Lian Li; Yongzhong Sha

2009-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

A novel time-based low-power pipeline analog to digital converter  

Science Conference Proceedings (OSTI)

A new power reduction technique for analog-to-digital converters is proposed in this paper. A novel current-mode algorithm which uses time to perform analog-to-digital conversion has been described and a 12 bit 100-ksample/s time-based pipeline analog ... Keywords: Bottom plate sampling, Continues-time comparator, Digital correction, Pipeline ADC

Mohammad Hossein Zarifi; Javad Frounchi; Shahin Farshchi; Jack W. Judy

2010-03-01T23:59:59.000Z

122

Predictions for the Rates of Compact Binary Coalescences Observable by Ground-based Gravitational-wave Detectors  

E-Print Network (OSTI)

We present an up-to-date, comprehensive summary of the rates for all types of compact binary coalescence sources detectable by the Initial and Advanced versions of the ground-based gravitational-wave detectors LIGO and Virgo. Astrophysical estimates for compact-binary coalescence rates depend on a number of assumptions and unknown model parameters, and are still uncertain. The most confident among these estimates are the rate predictions for coalescing binary neutron stars which are based on extrapolations from observed binary pulsars in our Galaxy. These yield a likely coalescence rate of 100 per Myr per Milky Way Equivalent Galaxy (MWEG), although the rate could plausibly range from 1 per Myr per MWEG to 1000 per Myr per MWEG. We convert coalescence rates into detection rates based on data from the LIGO S5 and Virgo VSR2 science runs and projected sensitivities for our Advanced detectors. Using the detector sensitivities derived from these data, we find a likely detection rate of 0.02 per year for Initial LIGO-Virgo interferometers, with a plausible range between 0.0002 and 0.2 per year. The likely binary neutron-star detection rate for the Advanced LIGO-Virgo network increases to 40 events per year, with a range between 0.4 and 400 per year.

LIGO Scientific Collaboration; Virgo Collaboration; J. Abadie; B. P. Abbott; R. Abbott; M Abernathy; T. Accadia; F. Acernese; C. Adams; R. Adhikari; P. Ajith; B. Allen; G. Allen; E. Amador Ceron; R. S. Amin; S. B. Anderson; W. G. Anderson; F. Antonucci; S. Aoudia; M. A. Arain; M. Araya; M. Aronsson; K. G. Arun; Y. Aso; S. Aston; P. Astone; D. E. Atkinson; P. Aufmuth; C. Aulbert; S. Babak; P. Baker; G. Ballardin; S. Ballmer; D. Barker; S. Barnum; F. Barone; B. Barr; P. Barriga; L. Barsotti; M. Barsuglia; M. A. Barton; I. Bartos; R. Bassiri; M. Bastarrika; J. Bauchrowitz; Th. S. Bauer; B. Behnke; M. G. Beker; M. Benacquista; A. Bertolini; J. Betzwieser; N. Beveridge; P. T. Beyersdorf; S. Bigotta; I. A. Bilenko; G. Billingsley; J. Birch; S. Birindelli; R. Biswas; M. Bitossi; M. A. Bizouard; E. Black; J. K. Blackburn; L. Blackburn; D. Blair; B. Bland; M. Blom; A. Blomberg; C. Boccara; O. Bock; T. P. Bodiya; R. Bondarescu; F. Bondu; L. Bonelli; R. Bork; M. Born; S. Bose; L. Bosi; M. Boyle; S. Braccini; C. Bradaschia; P. R. Brady; V. B. Braginsky; J. E. Brau; J. Breyer; D. O. Bridges; A. Brillet; M. Brinkmann; V. Brisson; M. Britzger; A. F. Brooks; D. A. Brown; R. Budzy?ski; T. Bulik; H. J. Bulten; A. Buonanno; J. Burguet--Castell; O. Burmeister; D. Buskulic; R. L. Byer; L. Cadonati; G. Cagnoli; E. Calloni; J. B. Camp; E. Campagna; P. Campsie; J. Cannizzo; K. C. Cannon; B. Canuel; J. Cao; C. Capano; F. Carbognani; S. Caride; S. Caudill; M. Cavaglià; F. Cavalier; R. Cavalieri; G. Cella; C. Cepeda; E. Cesarini; T. Chalermsongsak; E. Chalkley; P. Charlton; E. Chassande-Mottin; S. Chelkowski; Y. Chen; A. Chincarini; N. Christensen; S. S. Y. Chua; C. T. Y. Chung; D. Clark; J. Clark; J. H. Clayton; F. Cleva; E. Coccia; C. N. Colacino; J. Colas; A. Colla; M. Colombini; R. Conte; D. Cook; T. R. Corbitt; C. Corda; N. Cornish; A. Corsi; C. A. Costa; J. -P. Coulon; D. Coward; D. C. Coyne; J. D. E. Creighton; T. D. Creighton; A. M. Cruise; R. M. Culter; A. Cumming; L. Cunningham; E. Cuoco; K. Dahl; S. L. Danilishin; R. Dannenberg; S. D'Antonio; K. Danzmann; A. Dari; K. Das; V. Dattilo; B. Daudert; M. Davier; G. Davies; A. Davis; E. J. Daw; R. Day; T. Dayanga; R. De Rosa; D. DeBra; J. Degallaix; M. del Prete; V. Dergachev; R. DeRosa; R. DeSalvo; P. Devanka; S. Dhurandhar; L. Di Fiore; A. Di Lieto; I. Di Palma; M. Di Paolo Emilio; A. Di Virgilio; M. Díaz; A. Dietz; F. Donovan; K. L. Dooley; E. E. Doomes; S. Dorsher; E. S. D. Douglas; M. Drago; R. W. P. Drever; J. C. Driggers; J. Dueck; J. -C. Dumas; T. Eberle; M. Edgar; M. Edwards; A. Effler; P. Ehrens; R. Engel; T. Etzel; M. Evans; T. Evans; V. Fafone; S. Fairhurst; Y. Fan; B. F. Farr; D. Fazi; H. Fehrmann; D. Feldbaum; I. Ferrante; F. Fidecaro; L. S. Finn; I. Fiori; R. Flaminio; M. Flanigan; K. Flasch; S. Foley; C. Forrest; E. Forsi; N. Fotopoulos; J. -D. Fournier; J. Franc; S. Frasca; F. Frasconi; M. Frede; M. Frei; Z. Frei; A. Freise; R. Frey; T. T. Fricke; D. Friedrich; P. Fritschel; V. V. Frolov; P. Fulda; M. Fyffe; L. Gammaitoni; J. A. Garofoli; F. Garufi; G. Gemme; E. Genin; A. Gennai; I. Gholami; S. Ghosh; J. A. Giaime; S. Giampanis; K. D. Giardina; A. Giazotto; C. Gill; E. Goetz; L. M. Goggin; G. González; M. L. Gorodetsky; S. Goßler; R. Gouaty; C. Graef; M. Granata; A. Grant; S. Gras; C. Gray; R. J. S. Greenhalgh; A. M. Gretarsson; C. Greverie; R. Grosso; H. Grote; S. Grunewald; G. M. Guidi; E. K. Gustafson; R. Gustafson; B. Hage; P. Hall; J. M. Hallam; D. Hammer; G. Hammond; J. Hanks; C. Hanna; J. Hanson; J. Harms; G. M. Harry; I. W. Harry; E. D. Harstad; K. Haughian; K. Hayama; J. Heefner; H. Heitmann; P. Hello; I. S. Heng; A. Heptonstall; M. Hewitson; S. Hild; E. Hirose; D. Hoak; K. A. Hodge; K. Holt; D. J. Hosken; J. Hough; E. Howell; D. Hoyland; D. Huet; B. Hughey; S. Husa; S. H. Huttner; T. Huynh--Dinh; D. R. Ingram; R. Inta; T. Isogai; A. Ivanov; P. Jaranowski; W. W. Johnson; D. I. Jones; G. Jones; R. Jones; L. Ju; P. Kalmus; V. Kalogera; S. Kandhasamy; J. Kanner; E. Katsavounidis; K. Kawabe; S. Kawamura; F. Kawazoe; W. Kells; D. G. Keppel; A. Khalaidovski; F. Y. Khalili; E. A. Khazanov; C. Kim; H. Kim; P. J. King; D. L. Kinzel; J. S. Kissel; S. Klimenko; V. Kondrashov; R. Kopparapu; S. Koranda; I. Kowalska; D. Kozak; T. Krause; V. Kringel; S. Krishnamurthy; B. Krishnan; A. Królak; G. Kuehn; J. Kullman; R. Kumar; P. Kwee; M. Landry; M. Lang; B. Lantz; N. Lastzka; A. Lazzarini; P. Leaci; J. Leong; I. Leonor; N. Leroy; N. Letendre; J. Li; T. G. F. Li; H. Lin; P. E. Lindquist; N. A. Lockerbie; D. Lodhia; M. Lorenzini; V. Loriette; M. Lormand; G. Losurdo; P. Lu; J. Luan; M. Lubinski; A. Lucianetti; H. Lück; A. Lundgren; B. Machenschalk; M. MacInnis; J. M. Mackowski; M. Mageswaran; K. Mailand; E. Majorana; C. Mak; N. Man; I. Mandel; V. Mandic; M. Mantovani; F. Marchesoni; F. Marion; S. Márka; Z. Márka; E. Maros; J. Marque; F. Martelli

2010-03-12T23:59:59.000Z

123

An evaluation of three commercially available technologies for real-time measurement of rates of outdoor airflow into HVAC systems  

E-Print Network (OSTI)

RATES OF OUTDOOR AIRFLOW INTO HVAC SYSTEMS William J. Fisk,determine flow resistance of hvac ducts and fittings. A S H

Fisk, William J.; Faulkner, David; Sullivan, Douglas P.

2004-01-01T23:59:59.000Z

124

A Habit-Based Explanation of the Exchange Rate Risk Premium  

E-Print Network (OSTI)

This paper presents a model that reproduces the uncovered interest rate parity puzzle. Investors have preferences with external habits. Countercyclical risk premia and procyclical real interest rates arise endogenously. ...

Verdelhan, Adrien Frederic

125

Estimating Continuous-Coverage Instantaneous Precipitation Rates Using Remotely Sensed and Ground-Based Measurements  

Science Conference Proceedings (OSTI)

This study demonstrates a method of temporally and spatially scaling precipitation rates at low probability of precipitation-rate exceedance levels (e.g., 0.1%) from coarser-resolution global datasets to near-instantaneous localized rain gauge ...

Joseph A. Grim; James O. Pinto

2011-10-01T23:59:59.000Z

126

Measurement of Hydrogen Production Rate Based on Dew Point Temperatures: Independent Review  

DOE Green Energy (OSTI)

This independent review verified Idaho National Labotory's approach of measuring the rate of hydrogen production using dew point temperatures.

Duffy, M.; Harrison, K.; Sheahen, T.

2007-11-01T23:59:59.000Z

127

Region-of-interest video coding based on rate and distortion variations for H.263+  

Science Conference Proceedings (OSTI)

Region-of-interest (ROI) is an essential task that one must undertake in low bit-rate multimedia communications because of the limited bandwidth of the channels and the transcoder between different standards. In this paper, an effective ROI determination ... Keywords: H.263+, Rate control, Rate-distortion, Region-of-interest, Videoconference

Ming-Chieh Chi; Mei-Juan Chen; Chia-Hung Yeh; Jyong-An Jhu

2008-02-01T23:59:59.000Z

128

A high-repetition rate scheme for synchrotron-based picosecond laser pump/x-ray probe experiments on chemical and biological systems in solution  

SciTech Connect

We present the extension of time-resolved optical pump/x-ray absorption spectroscopy (XAS) probe experiments towards data collection at MHz repetition rates. The use of a high-power picosecond laser operating at an integer fraction of the repetition rate of the storage ring allows exploitation of up to two orders of magnitude more x-ray photons than in previous schemes based on the use of kHz lasers. Consequently, we demonstrate an order of magnitude increase in the signal-to-noise of time-resolved XAS of molecular systems in solution. This makes it possible to investigate highly dilute samples at concentrations approaching physiological conditions for biological systems. The simplicity and compactness of the scheme allows for straightforward implementation at any synchrotron beamline and for a wide range of x-ray probe techniques, such as time-resolved diffraction or x-ray emission studies.

Lima, Frederico A.; Milne, Christopher J.; Amarasinghe, Dimali C. V.; Rittmann-Frank, Mercedes Hannelore; Veen, Renske M. van der; Reinhard, Marco; Pham, Van-Thai; Karlsson, Susanne; Mourik, Frank van; Chergui, Majed [Laboratoire de Spectroscopie Ultrarapide, Ecole Polytechnique Federale de Lausanne, ISIC, FSB, 1015 Lausanne (Switzerland); Johnson, Steven L.; Grolimund, Daniel; Borca, Camelia; Huthwelker, Thomas; Janousch, Markus [Swiss Light Source, Paul Scherrer Institut, 5232 Villigen (Switzerland); Abela, Rafael [SwissFEL, Paul Scherrer Institut, 5232 Villigen (Switzerland)

2011-06-15T23:59:59.000Z

129

The Time Cost of Tornado Warnings and the Savings with Storm-Based Warnings  

Science Conference Proceedings (OSTI)

The authors examine the cost of time spent under tornado warnings issued annually by the National Weather Service (NWS). County-based tornado warnings imposed substantial costs on the nation: an average of 234 million person-hours spent under ...

Daniel Sutter; Somer Erickson

2010-04-01T23:59:59.000Z

130

Enhanced modeling : real-time simulation and modeling of graph based problems on interactive workbenches  

E-Print Network (OSTI)

This thesis presents a methodology and framework for designing systems that apply real-time simulation of computational models throughout the modeling and parameter modification stages of problem solving for graph based ...

Chak, Daniel, 1980-

2004-01-01T23:59:59.000Z

131

Integer programming-based real-time scheduler in semiconductor manufacturing  

Science Conference Proceedings (OSTI)

This paper demonstrates how an integer programming-based real-time scheduling heuristic approach can be applied for semiconductor manufacturing. Two integer programming formulations of a simplified version of this problem are proposed to model (1) a ...

Myoungsoo Ham; Young Hoon Lee; John W. Fowler

2009-12-01T23:59:59.000Z

132

A test for second order stationarity of a time series based on the Discrete Fourier Transform  

E-Print Network (OSTI)

A test for second order stationarity of a time series based on the Discrete Fourier Transform property, we construct a Portmanteau type test statistic for testing stationarity of the time series. It is shown that under the null of stationarity, the test statistic is approximately a chi square distribution

Subba Rao, Suhasini

133

Dead-Time Compensation for PMSM Drive Based on Neuro-Fuzzy Observer  

Science Conference Proceedings (OSTI)

To compensate voltage difference between the reference and the actual output voltages caused by dead-time effects, a novel compensation method for permanent magnet synchronous motor (PMSM) drive based on neuro-fuzzy observer is proposed. This method ... Keywords: dead-time, PMSM, ANN, FC

Xianqing Cao; Liping Fan

2008-10-01T23:59:59.000Z

134

ATOM: An object-based formal method for real-time systems  

Science Conference Proceedings (OSTI)

An object based formal method for the development of real‐time systems, called ATOM, is presented. The method is an integration of the real‐time formal technique TAM (Temporal Agent Model) with an industry‐strength structured ...

Hussein Zedan; Antonio Cau; Zhiqiang Chen; Hongji Yang

1999-06-01T23:59:59.000Z

135

A STEP-compliant computer numerical control based on real-time Ethernet for circuit boardmilling  

Science Conference Proceedings (OSTI)

With the globalisation of manufacturing industry, extendable and networked computer numerical control systems that can support bidirectional and seamless data exchange are in urgent need. This paper presents a STEP-NC compliant controller based on Real-time ... Keywords: Gerber, Real-time Ethernet RTE, STEP-NC, circuit board milling, computer numerical control CNC

Ke Wang; Riliang Liu; Xun Xu; Chenrui Zhang; Lin Yang

2012-12-01T23:59:59.000Z

136

A prediction method for time series based on wavelet neural networks  

Science Conference Proceedings (OSTI)

This paper introduces a prediction method for time series that is based on the multi-resolution analysis of wavelets (MRA). The MRA is better able to decompose the non-stationary time series of nonlinear systems into different components, allowing a ...

Xiaobing Gan; Ying Liu; Francis R. Austin

2005-12-01T23:59:59.000Z

137

Timed automata-based rehabilitation training game design for the affected lower extremity of hemiparetic patient  

Science Conference Proceedings (OSTI)

This paper presents a timed automata based rehabilitation training game design to effectively strengthen the affected leg of the hemiparetic patient. The proposed system is implemented by applying a simple motion capture technique to a rhythm game. Especially, ... Keywords: hemiparetic patient, isometric training, motion capture, rehabilitation training game, timed automata

Gi Sook Jung; Sang Yun Kim; Soon Ki Jung; Seung Deuk Byun; Yang Soo Lee

2008-01-01T23:59:59.000Z

138

VBR MPEG Video Traffic Dynamic Prediction Based on the Modeling and Forecast of Time Series  

Science Conference Proceedings (OSTI)

The variable-bit-rate traffic characteristic brings a large complication to the utilization of network resources, especially bandwidth. To solve this problem, this paper proposes a dynamic prediction scheme of MPEG video traffic. We first advance an ... Keywords: MPEG, video trace, forecast, time series, ARMA

Jun Dai; Jun Li

2009-08-01T23:59:59.000Z

139

Real Time Physically-Based Modeling and Simulation of Cratering and Fragmentation of Terrain  

Science Conference Proceedings (OSTI)

Cratering and fragmentation of terrain due to eXplosions are the behaviors of interest in this effort. We propose a physically-based approach to model the eXplosion event and the process of terrain fragmentation resulting in the formation of craters. ... Keywords: dynamic terrain, eXplosion simulation, physics-based modeling, real time system, simulation, terrain database

Nabil Rami; Michael D. Proctor

2007-12-01T23:59:59.000Z

140

Methodology for Rating a Building's Overall Performance based on the ASHRAE/CIBSE/USGBC Performance Measurement Protocols for Commercial Buildings  

E-Print Network (OSTI)

This study developed and applied a field test to evaluate the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)/Chartered Institute of Building Services Engineers (CIBSE)/United States Green Building Council (USGBC) Performance Measurement Protocols (PMP) for Commercial Buildings in a case-study office building in central Texas. As the first integrated protocol on building performance measurement, the ASHRAE PMP accomplished its goal of providing the standardized protocols for measuring and comparing the overall performance of a building, including energy, water, thermal comfort, Indoor Air Quality (IAQ), lighting, and acoustics. However, several areas for improvement were identified such as conflicting results from different procedures or benchmarks provided in the ASHRAE PMP; limited guidelines for performing the measurements; lack of detailed modeling techniques, graphical indices, and clear benchmarks; and some practical issues (i.e., high cost requirements and time-intensive procedures). All these observations are listed as the forty issues, including thirteen for energy, five for water, and twenty-two for Indoor Environmental Quality (IEQ). Recommendations were developed for each issue identified. For the selected high-priority issues, twelve new or modified approaches were proposed and then evaluated against the existing procedures in the ASHRAE PMP. Of these twelve new or modified approaches, the following are the most significant developments: a more accurate monthly energy use regression model including occupancy; a monthly water use regression model for a weather-normalized comparison of measured water performance; a method how to use a vertical temperature profile to evaluate room air circulation; a method how to use LCeq – LAeq difference as a low-cost alternative to estimate low frequency noise annoyance; a statistical decomposition method of time-varying distribution of indices; and a real-time wireless IEQ monitoring system for the continuous IEQ measurements. The application of the forty recommendations and the twelve new or modified approaches developed in this study to the ASHRAE PMP is expected to improve the applicability of the ASHRAE PMP, which aligns the overall purpose of this study. Finally, this study developed a new single figure-of-merit rating system based on the ASHRAE PMP procedures. The developed rating system is expected to improve the usability of the protocols.

Kim, Hyojin 1981-

2012-12-01T23:59:59.000Z

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141

A new method of waveform digitization based on time-interleaved A/D conversion  

E-Print Network (OSTI)

Time interleaved analog-to-digital conversion (TIADC) based on parallelism is an effective way to meet the requirement of the ultra-fast waveform digitizer beyond Gsps. Different methods to correct the mismatch errors among different analog-to-digital conversion channels have been developed previously. To overcome the speed limitation in hardware design and to implement the mismatch correction algorithm in real time, this paper proposes a fully parallel correction algorithm. A 12-bit 1-Gsps waveform digitizer with ENOB around 10.5 bit from 5 MHz to 200 MHz is implemented based on the real-time correction algorithm.

Chunfeng Ye; Lei Zhao; Changqing Feng; Shubin Liu; Qi An

2013-07-05T23:59:59.000Z

142

Assessment of human physchophysiological states based on methods for heart rate variability analysis  

Science Conference Proceedings (OSTI)

We investigate certain parameters that characterize heart rate variability, as well as combinations of these parameters in terms of assessing their information value for regulating the current psychophysiological state of an operator during a mental ... Keywords: assessment of a person's psychophysiological state, automated ECG analysis, digital signal analysis, heart rate variability analysis

A. N. Kalinichenko; O. D. Yur'Eva

2012-10-01T23:59:59.000Z

143

Forecasting and trading the EUR/USD exchange rate with stochastic Neural Network combination and time-varying leverage  

Science Conference Proceedings (OSTI)

The motivation of this paper is to investigate the use of a Neural Network (NN) architecture, the Psi Sigma Neural Network (PSN), when applied to the task of forecasting and trading the Euro/Dollar (EUR/USD) exchange rate using the European Central Bank ... Keywords: Forecast combinations, Kalman Filter, LASSO, Leverage, Psi Sigma network, Recurrent Network

Georgios Sermpinis; Christian Dunis; Jason Laws; Charalampos Stasinakis

2012-12-01T23:59:59.000Z

144

A Real-Time Simulator for Doubly Fed Induction Generator based Wind Turbine Applications  

E-Print Network (OSTI)

Abstract- This paper describes a real-time simulator of wind turbine generator system suitable for controller design and tests. The simulated generator is a grid-connected doubly fed induction machine with back-to-back PWM voltage source vector control of the rotor. The simulator is based on RT-LAB real-time simulation platform that allows for easy model-to-real-time-target design from Simulink models. The paper puts special emphasis on the fixed-step simulation problematic of kHz-range PWM inverter drives and the techniques used in the real-time simulator to accurately simulate those drives.

Christian Dufour; Jean Bélanger

2004-01-01T23:59:59.000Z

145

Development and Testing of Field-Deployable Real-Time Laser-Based Non-Intrusive Detection System for Measurement of True Travel Time on the Highway  

E-Print Network (OSTI)

Laser-Based Non-Intrusive Detection System for MeasurementLaser-Based Non-Intrusive Detection System for Measurementsystems are entirely dependent on time-of-?ight laser measurements

2001-01-01T23:59:59.000Z

146

A high sensitivity fiber optic macro-bend based gas flow rate transducer for low flow rates: Theory, working principle, and static calibration  

SciTech Connect

A novel fiber optic macro-bend based gas flowmeter for low flow rates is presented. Theoretical analysis of the sensor working principle, design, and static calibration were performed. The measuring system consists of: an optical fiber, a light emitting diode (LED), a Quadrant position sensitive Detector (QD), and an analog electronic circuit for signal processing. The fiber tip undergoes a deflection in the flow, acting like a cantilever. The consequent displacement of light spot center is monitored by the QD generating four unbalanced photocurrents which are function of fiber tip position. The analog electronic circuit processes the photocurrents providing voltage signal proportional to light spot position. A circular target was placed on the fiber in order to increase the sensing surface. Sensor, tested in the measurement range up to 10 l min{sup -1}, shows a discrimination threshold of 2 l min{sup -1}, extremely low fluid dynamic resistance (0.17 Pa min l{sup -1}), and high sensitivity, also at low flow rates (i.e., 33 mV min l{sup -1} up to 4 l min{sup -1} and 98 mV min l{sup -1} from 4 l min{sup -1} up to 10 l min{sup -1}). Experimental results agree with the theoretical predictions. The high sensitivity, along with the reduced dimension and negligible pressure drop, makes the proposed transducer suitable for medical applications in neonatal ventilation.

Schena, Emiliano; Saccomandi, Paola; Silvestri, Sergio [Center for Integrated Research, Unit of Measurements and Biomedical Instrumentation, Universita Campus Bio-Medico di Roma, Via Alvaro del Portillo, 21, 00128 Rome (Italy)

2013-02-15T23:59:59.000Z

147

Analysis of SWADE Discus N Wind Speed and Wave Height Time Series. Part II: Quantitative Growth Rates during a Storm  

Science Conference Proceedings (OSTI)

In Part I, wind speed and wave height time series obtained from the Discus N buoy during two storm events recorded in the SWADE experiment were analyzed using discrete wavelet packet transforms. One result of the analysis is that distinct tightly ...

Jorge F. Willemsen

1997-06-01T23:59:59.000Z

148

A cost-based adaptive handover hysteresis scheme to minimize the handover failure rate in 3GPP LTE system  

Science Conference Proceedings (OSTI)

We deal with a cost-based adaptive handover hysteresis scheme for the horizontal handover decision strategies, as one of the self-optimization techniques that can minimize the handover failure rate (HFR) in the 3rd generation partnership project (3GPP) ...

Doo-Won Lee; Gye-Tae Gil; Dong-Hoi Kim

2010-02-01T23:59:59.000Z

149

An efficient data rate maximization algorithm for OFDM based wireless networks  

Science Conference Proceedings (OSTI)

In this paper we present a computationally efficient, suboptimal integer bit allocation algorithm that maximizes the overall data rate in multiuser orthogonal frequency division multiplexing (OFDM) systems implemented in wireless networks. Assuming the ... Keywords: Bit allocation algorithm, Multiuser OFDM system, Power allocation algorithm, QoS, Wireless networks

Željko Ili?; Alen Bažant; Borivoj Modlic

2010-01-01T23:59:59.000Z

150

A framework for simulation-based real-time whole building performance  

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

A framework for simulation-based real-time whole building performance A framework for simulation-based real-time whole building performance assessment Title A framework for simulation-based real-time whole building performance assessment Publication Type Journal Article Refereed Designation Unknown LBNL Report Number 0360-1323 Year of Publication 2012 Authors Pang, Xiufeng, Michael Wetter, Prajesh Bhattacharya, and Philip Haves Journal Building and Environment Volume 54 Start Page 100 Pagination 100-108 Date Published 08/2012 ISSN 0360-1323 Keywords building controls virtual test bed, building performance, energy modeling, energyplus, real-time building simulation Abstract Most commercial buildings do not perform as well in practice as intended by the design and their performances often deteriorate over time. Reasons include faulty construction, malfunctioning equipment, incorrectly configured control systems and inappropriate operating procedures. One approach to addressing this problems is to compare the predictions of an energy simulation model of the building to the measured performance and analyze significant differences to infer the presence and location of faults. This paper presents a framework that allows a comparison of building actual performance and expected performance in real time. The realization of the framework utilized the EnergyPlus, the Building Controls Virtual Test Bed (BCVTB) and the Energy Management and Control System (EMCS) was developed. An EnergyPlus model that represents expected performance of a building runs in real time and reports the predicted building performance at each time step. The BCVTB is used as the software platform to acquire relevant inputs from the EMCS through a BACnet interface and send them to the EnergyPlus and to a database for archiving. A proof-of-concept demonstration is also presented.

151

A Real-Time, Hierarchical, Sensor-Based Robotic System Architecture  

Science Conference Proceedings (OSTI)

A robotic system architecture is presented and its real-time performance, when used to control a robotic gripper system for deformation-free handling of limp material, is evaluated. A major problem to be overcome has been the integrability and compatibility ... Keywords: compatibility, hierarchical control, sensor-based control, system architecture, system integration

Timothy Hebert; Kimon Valavanis; Ramesh Kolluru

1998-01-01T23:59:59.000Z

152

A new battery energy storage system control method based on SOC and variable filter time constant  

Science Conference Proceedings (OSTI)

Because of large fluctuations and strong randomness of active power generated by renewable energy resources, taking into account the constraints such as battery life cycle, a new battery energy storage system control method based on real-time state-of-charge ...

Li Guo; Ye Zhang; Cheng Shan Wang

2012-01-01T23:59:59.000Z

153

An automated pipeline for asteroseismology based on the autocorrelation of stellar time series  

E-Print Network (OSTI)

The autocorrelation of an asteroseismic time series has been identified as a powerful tool capable of providing measurements of the large frequency separations. The performance of this method has been assessed and quantified by Mosser & Appourchaux (2009). We propose now an automated pipeline based on it and describe its performance.

Mosser, Benoit

2010-01-01T23:59:59.000Z

154

Implicit--explicit methods based on strong stability preserving multistep time discretizations  

Science Conference Proceedings (OSTI)

In this note we propose and analyze novel implicit-explicit methods based on second order strong stability preserving multistep time discretizations. Several schemes are developed, and a linear stability analysis is performed to study their properties ... Keywords: Advection--diffusion equation, Implicit--explicit methods, Stability, Strong stability preserving methods

Thor Gjesdal

2007-08-01T23:59:59.000Z

155

TACO-DTN: a time-aware content-based dissemination system for delay tolerant networks  

Science Conference Proceedings (OSTI)

Content dissemination applications are becoming more and more popular on fixed infrastructure: in this paper we introduce TACO-DTN, a content dissemination system which, by virtue of being time-aware in terms of subscriptions and events, is appropriate ... Keywords: buffer management, content-based routing, delay tolerant networking, event dissemination, infostations, publish/subscribe systems

Giuseppe Sollazzo; Mirco Musolesi; Cecilia Mascolo

2007-06-01T23:59:59.000Z

156

A Method to Infer Observation Time Based on Day-to-Day Temperature Variations  

Science Conference Proceedings (OSTI)

A method to infer the observation time of a station at annual resolution is developed and tested at stations in the United States. The procedure is based on a tendency for the percentiles of the monthly distribution of positive day-to-day maximum ...

Arthur T. DeGaetano

1999-12-01T23:59:59.000Z

157

Real-time motion effect enhancement based on fluid dynamics in figure animation  

Science Conference Proceedings (OSTI)

In fast figure animation, motion blur is often employed to generate fantastic effects of figure motion, for exaggerating the atmosphere one wants to convey. In the previous works for long time, the solution based on certain kind of image blending in ... Keywords: GPU geometric processing, fluid dynamics, motion blur, skeletal animation

Tian-Chen Xu; En-Hua Wu; Mo Chen; Ming Xie

2011-12-01T23:59:59.000Z

158

Shedding light on shadow: real-time interactive artworks based on cast shadows or silhouettes  

Science Conference Proceedings (OSTI)

Digital shadowing is a source of interest in immersive and interactive artworks because it enhances the feeling of presence, and because it is a very intuitive and engaging interaction "device." After a presentation of some major pieces in shadow-based ... Keywords: augmented reality, digital art, digital shadow, interactive art, real-time image processing, video-scenography

Christian Jacquemin; Georges Gagneré; Benoît Lahoz

2011-11-01T23:59:59.000Z

159

Conversion of non-calendar to calendar-time based preventive  

E-Print Network (OSTI)

scheduling optimization process. Design/methodology/approach ­ The algorithm utilizes estimations of work-in-process going to equipment costs. On the other hand, due to the complexity of scheduling PM tasks, heuristic (WIP) and system parameters to estimate an equivalent calendar-time schedule for PM schedules based

Fernandez, Emmanuel

160

VLSI-DSP based real time solution of DSC-SRI for an ultrasound system  

Science Conference Proceedings (OSTI)

In this paper, VLSI-DSP based a real time solution for Digital Scan Conversion (DSC) and speckle reduced imaging (SRI) of an ultrasonography (USG) are proposed. DSC is needed to convert the polar format data to Cartesian coordinate to make them compatible ... Keywords: DaVinci, Digital Scan Conversion, FPGA, Speckle reduction imaging, Ultrasound sonography

Kishor Prabhakar Sarawadekar; Harihar Bharat Indana; Deep Bera; Swapna Banerjee

2012-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

Using time-driven activity-based costing to manage digital forensic readiness in large organisations  

Science Conference Proceedings (OSTI)

A digital forensic readiness (DFR) programme consists of a number of activities that should be chosen and managed with respect to cost constraints and risk. Traditional cost systems, however, can not provide the cost of individual activities. This makes ... Keywords: Cost management, Digital forensic readiness, Forensics management, Time-driven activity-based costing

K. Reddy; H. S. Venter; M. S. Olivier

2012-12-01T23:59:59.000Z

162

Optimal Real-time Pricing Algorithm Based on Utility Maximization for Smart Grid  

E-Print Network (OSTI)

Optimal Real-time Pricing Algorithm Based on Utility Maximization for Smart Grid Pedram Samadi algorithm for the future smart grid. We focus on the interactions between the smart meters and the energy-mail:{psamadi, hamed, rschober, vincentw, jurij}@ece.ubc.ca Abstract--In this paper, we consider a smart power infras

Wong, Vincent

163

A very low bit-rate minimalist video encoder based on matching pursuits  

Science Conference Proceedings (OSTI)

This work proposes and implements a simple and efficient video encoder based on the compression of consecutive frame differences using sparse decomposition through matching pursuits. Despite its minimalist design, the proposed video codec has performance ...

Vitor De Lima; Helio Pedrini

2010-11-01T23:59:59.000Z

164

A Satellite Passive 37-GHz Scattering-based Method for Measuring Oceanic Rain Rates  

Science Conference Proceedings (OSTI)

A combination of theory and measurement is used to develop a scattering-based method for quantitatively measuring rainfall over the ocean from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) 37-GHz observations. This technique takes ...

Roy W. Spencer

1986-06-01T23:59:59.000Z

165

Time-windows-based filtering method for near-surface detection of leakage from geologic carbon sequestration sites  

E-Print Network (OSTI)

Time-Windows-Based Filtering Method for Near-Surfacethat combines a novel time-window splitting scheme, a simpleconsists of a novel time-window splitting scheme, a simple

Pan, L.

2010-01-01T23:59:59.000Z

166

Energy Rating  

E-Print Network (OSTI)

Consistent, accurate, and uniform ratings based on a single statewide rating scale Reasonable estimates of potential utility bill savings and reliable recommendations on cost-effective measures to improve energy efficiency Training and certification procedures for home raters and quality assurance procedures to promote accurate ratings and to protect consumers Labeling procedures that will meet the needs of home buyers, homeowners, renters, the real estate industry, and mortgage lenders with an interest in home energy ratings

Cabec Conference; Rashid Mir P. E

2009-01-01T23:59:59.000Z

167

Laser-based irradiation apparatus and methods for monitoring the dose-rate response of semiconductor devices  

DOE Patents (OSTI)

A scanned, pulsed, focused laser irradiation apparatus can measure and image the photocurrent collection resulting from a dose-rate equivalent exposure to infrared laser light across an entire silicon die. Comparisons of dose-rate response images or time-delay images from before, during, and after accelerated aging of a device, or from periodic sampling of devices from fielded operational systems allows precise identification of those specific age-affected circuit structures within a device that merit further quantitative analysis with targeted materials or electrical testing techniques. Another embodiment of the invention comprises a broad-beam, dose rate-equivalent exposure apparatus. The broad-beam laser irradiation apparatus can determine if aging has affected the device's overall functionality. This embodiment can be combined with the synchronized introduction of external electrical transients into a device under test to simulate the electrical effects of the surrounding circuitry's response to a radiation exposure.

Horn, Kevin M. (Albuquerque, NM)

2006-03-28T23:59:59.000Z

168

Real Time Runoff Forecasts for Two Hydroelectric Stations Based on Satellite Snow Cover Monitoring  

E-Print Network (OSTI)

Seasonal and short-term runoff forecasts for two hydroelectric stations in the upper Rhine basin are carried out in real time based on snow cover monitoring by Landsat and SPOT satellites. Evaluation of snow reserves on 1 April 1993 from satellite data reveals uncertainties in estimates using point measurements on the ground as index. Runoff is computed by the SRM model with snow covered areas as well as temperature and precipitation forecasts as input variables. A SRM menu system has been installed for operational data acquisition and management. The runoff forecasts can be exploited, among other purposes, for optimizing the hydropower production and for timely decisions on the electricity market.

Klaus Seidel; Walter Brüsch; Charlotte Steinmeier; Jaroslav Martinec; Jürg Wiedemeier; Klaus Seidel Walter Br Usch; J Urg Wiedemeier

1995-01-01T23:59:59.000Z

169

Prototype Phasor-Based Real-Time Monitoring Software Tool - Training Presentation  

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

Prototype Phasor-Based Real-Time Monitoring Prototype Phasor-Based Real-Time Monitoring Software Tool - Training Presentation Prepared For: California Energy Commission Public Interest Energy Research Program Prepared By: Lawrence Berkeley National Laboratory Consortium for Electric Reliability Technology Solutions APPENDIX E October 2008 CEC-500-2008-049-APE Prepared By: Lawrence Berkeley National Laboratory Joe Eto, Manu Parashar, Bernard Lesieutre, and Nancy Jo Lewis Berkeley, CA Administered by University of California, California Institute for Energy and Environment under 500-99-013, BOA-138. Jim Cole, Larry Miller Oakland, California 94612 Commission Contract No. 500-02-004 Commission Work Authorization No: MR-036 Prepared For: Public Interest Energy Research (PIER)

170

Relationships between consumers' attitudes and knowledge and the effect of time-of-use rate structures on electricity consumption: North Carolina  

SciTech Connect

The North Carolina Time-of-Use (TOU) Rate Demonstration Project examined the effects of various TOU rate schedules on residential consumers' electrical usage, including both total usage and temporal patterns of electricity consumption. This report summarizes the findings of a series of secondary analyses of the data derived from this demonstration project. These secondary analyses focused on the effects of consumers' knowledge of, and attitudes toward, the TOU rate structure to which they were assigned on both total electricity usage and temporal patterns of consumption. These analyses were made possible by the provision of an extensive exit interview, which was administered to all participants at the completion of the one year demonstration project. In addition, data on electricity usage, the dependent variable for these analyses, was collected throughout the duration of the demonstration project. After describing the general features of the demonstration project, this report presents the findings of secondary analyses undertaken to determine participants' knowledge of the TOU rate structures to which they were assigned, their attitudes toward TOU rate structures, and the relationships between these attitude and knowledge measures and electricity consumption. Findings are presented separately for the Carolina Power and Light Company (CP and L) and the Blue Ridge Municipal Electric Company.

1981-09-01T23:59:59.000Z

171

Evolution of Microstructure in a Nickel-based Superalloy as a Function of Ageing Time  

SciTech Connect

An experimental investigation, combining synchrotron X-ray powder diffraction, small-angle neutron-scattering, and transmission electron microscopy, has been undertaken to study the microstructure of nanoprecipitates in a nickel-based superalloy. Upon increasing the ageing time during a heat-treatment process, the average size of the precipitates first decreases before changing to a monotonical growth stage. Possible reasons for this observed structural evolution, which is predicted thermodynamically, are suggested.

Chen, Wei-Ren [ORNL; Smith, Gregory Scott [ORNL; Porcar, L. [National Institute of Standards and Technology (NIST); Liaw, Peter K [University of Tennessee, Knoxville (UTK); Kai, Ji-Jung [ORNL; Ren, Yang [Argonne National Laboratory (ANL)

2011-01-01T23:59:59.000Z

172

Large Improvements in MS/MS Based Peptide Identification Rates using a Hybrid Analysis  

SciTech Connect

We have developed a hybrid method for identifying peptides from global proteomics studies that significantly increases sensitivity and specificity in matching peptides to tandem mass spectra using database searches. The method increased the number of spectra that can be assigned to a peptide in a global proteomics study by 57-147% at an estimated false discovery rate of 5%, with clear room for even greater improvements. The approach combines the general utility of using consensus model spectra typical of database search methods1-3 with the accuracy of the intensity information contained in spectral libraries4-6. This hybrid approach is made possible by recent developments that elucidated the statistical framework common to both data analysis and statistical thermodynamics, resulting in a chemically inspired approach to incorporating fragment intensity information into both database searches and spectral library searches. We applied this approach to proteomics analysis of Synechococcus sp. PCC 7002, a cyanobacterium that is a model organism for studies of photosynthetic carbon fixation and biofuels development. The increased specificity and sensitivity of this approach allowed us to identify many more peptides involved in the processes important for photoautotrophic growth.

Cannon, William R.; Rawlins, Mitchell M.; Baxter, Douglas J.; Callister, Stephen J.; Lipton, Mary S.; Bryant, Donald A.

2011-05-06T23:59:59.000Z

173

Semiclassical pair production rate for time-dependent electrical fields with more than one component: -WKB-approach and world-line instantons  

E-Print Network (OSTI)

We present an analytic calculation of the semiclassical electron-positron pair creation rate by time-dependent electrical fields. We use two methods, first the imaginary time method in the WKB-approximation and second the world-line instanton approach. Both methods are generalized to time-dependent electric fields with more than one component. The two methods give the same result if the momentum spectrum of the produced pairs is peaked around $\\vec{p}=0$. The result in the world-line instanton approach can be obtained from the WKB result by a Taylor expansion around this peak. For the examples usually discussed in the literature the field has one component and the momentum spectrum is peaked at $\\vec{p}=0$ so that the two methods agree. By studying the case of rotating electric fields we however show that for fields with more components this is generally not true.

Eckhard Strobel; She-Sheng Xue

2013-12-11T23:59:59.000Z

174

Influence of cooling rate on the development of multiple generations of {gamma}' precipitates in a commercial nickel base superalloy  

Science Conference Proceedings (OSTI)

The compositional and microstructural evolution of different generations of {gamma}' precipitates during the continuous cooling of a commercial nickel base superalloy, Rene88DT, has been characterized by three dimensional atom probe tomography coupled with energy-filtered transmission electron microscopy studies. After solutionizing in the single {gamma} phase field, continuous cooling at a very high rate results in a monomodal size distribution of {gamma}' precipitates with a high nucleation density and non-equilibrium compositions. In contrast, a relatively slower cooling rate ({approx} 24 deg. C/min) results in a multi-modal size distribution of {gamma}' precipitates with the larger first generation primary precipitates exhibiting close to equilibrium composition, along with the smaller scale secondary {gamma}' precipitates, exhibiting non-equilibrium composition (excess of Co and Cr, depleted in Al and Ti). The composition of the {gamma} matrix near these precipitates also exhibits similar trends with the composition being closer to equilibrium near the primary precipitates as compared to the secondary precipitates. - Highlights: {yields} Effect of cooling rate on the precipitation of {gamma}' particles in commercial nickel base superalloy. {yields} Couples EFTEM and 3DAP studies to determine the composition and morphology of {gamma}' precipitates. {yields} Determination of near and far field compositional variations within the gamma matrix leading to subsequent precipitation.

Singh, A.R.P. [Center for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton, TX (United States); Nag, S., E-mail: nag.soumya@gmail.com [Center for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton, TX (United States); Hwang, J.Y. [Center for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton, TX (United States); Viswanathan, G.B.; Tiley, J. [Materials and Manufacturing Directorate, Air Force Research Laboratory, Dayton, OH (United States); Srinivasan, R. [ExxonMobil Research and Engineering Company, Annandale, NJ (United States); Fraser, H.L. [Center for the Accelerated Maturation of Materials and Department of Materials Science and Engineering, The Ohio State University, Columbus, OH (United States); Banerjee, R. [Center for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton, TX (United States)

2011-09-15T23:59:59.000Z

175

Use of WindSat to Extend a Microwave-Based Daily Optimum Interpolation Sea Surface Temperature Time Series  

Science Conference Proceedings (OSTI)

The NOAA ¼° daily optimum interpolation sea surface temperature analysis (DOISST) is available either as a 31-yr (from 1981 onward) time series based on Advanced Very High Resolution Radiometer (AVHRR) observations or as a 9-yr (2002–11) time ...

Viva F. Banzon; Richard W. Reynolds

2013-04-01T23:59:59.000Z

176

Taming Wild Horses: The Need for Virtual Time-based Scheduling of VMs in Network Simulations  

SciTech Connect

The next generation of scalable network simulators employ virtual machines (VMs) to act as high-fidelity models of traffic producer/consumer nodes in simulated networks. However, network simulations could be inaccurate if VMs are not scheduled according to virtual time, especially when many VMs are hosted per simulator core in a multi-core simulator environment. Since VMs are by default free-running, on the outset, it is not clear if, and to what extent, their untamed execution affects the results in simulated scenarios. Here, we provide the first quantitative basis for establishing the need for generalized virtual time scheduling of VMs in network simulators, based on an actual prototyped implementations. To exercise breadth, our system is tested with multiple disparate applications: (a) a set of message passing parallel programs, (b) a computer worm propagation phenomenon, and (c) a mobile ad-hoc wireless network simulation. We define and use error metrics and benchmarks in scaled tests to empirically report the poor match of traditional, fairness-based VM scheduling to VM-based network simulation, and also clearly show the better performance of our simulation-specific scheduler, with up to 64 VMs hosted on a 12-core simulator node.

Yoginath, Srikanth B [ORNL; Perumalla, Kalyan S [ORNL; Henz, Brian J [ORNL

2012-01-01T23:59:59.000Z

177

Bayesian based design of real-time sensor systems for high-risk indoor contaminants  

Science Conference Proceedings (OSTI)

The sudden release of toxic contaminants that reach indoor spaces can be hazardousto building occupants. To respond effectively, the contaminant release must be quicklydetected and characterized to determine unobserved parameters, such as release locationand strength. Characterizing the release requires solving an inverse problem. Designinga robust real-time sensor system that solves the inverse problem is challenging becausethe fate and transport of contaminants is complex, sensor information is limited andimperfect, and real-time estimation is computationally constrained.This dissertation uses a system-level approach, based on a Bayes Monte Carloframework, to develop sensor-system design concepts and methods. I describe threeinvestigations that explore complex relationships among sensors, network architecture,interpretation algorithms, and system performance. The investigations use data obtainedfrom tracer gas experiments conducted in a real building. The influence of individual sensor characteristics on the sensor-system performance for binary-type contaminant sensors is analyzed. Performance tradeoffs among sensor accuracy, threshold level and response time are identified; these attributes could not be inferred without a system-level analysis. For example, more accurate but slower sensors are found to outperform less accurate but faster sensors. Secondly, I investigate how the sensor-system performance can be understood in terms of contaminant transport processes and the model representation that is used to solve the inverse problem. The determination of release location and mass are shown to be related to and constrained by transport and mixing time scales. These time scales explain performance differences among different sensor networks. For example, the effect of longer sensor response times is comparably less for releases with longer mixing time scales. The third investigation explores how information fusion from heterogeneous sensors may improve the sensor-system performance and offset the need for more contaminant sensors. Physics- and algorithm-based frameworks are presented for selecting and fusing information from noncontaminant sensors. The frameworks are demonstrated with door-position sensors, which are found to be more useful in natural airflow conditions, but which cannot compensate for poor placement of contaminant sensors. The concepts and empirical findings have the potential to help in the design of sensor systems for more complex building systems. The research has broader relevance to additional environmental monitoring problems, fault detection and diagnostics, and system design.

Sreedharan, Priya; Sreedharan, Priya

2007-12-01T23:59:59.000Z

178

Vision-based Real-time Monitoring on the Behavior of Fish School  

E-Print Network (OSTI)

This paper introduces a technique which can automatically monitor the behavior of fish school in images in real-time. Results on the activity level, distribution and social interaction within the school are generated based on the spatial information extracted from captured images. The fish behaviors we observe here are selected based on a list of responses which fish exhibit when they are in distress. As it is a very challenging task to perform manual observations on fish, this technique creates a convenient alternative for researchers who need to study the behavior of fish. Instead, monitoring can be done effortlessly as images are translated to statistical results which can be used to describe the behavior of fish in the school. On top of this, the results can also detect any change to the water quality. 1.

Boon Fong Chew; How-lung Eng; Myo Thida

2009-01-01T23:59:59.000Z

179

2304 IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 55, NO. 5, MAY 2009 Service-Outage-Based Power and Rate Control for  

E-Print Network (OSTI)

and the receiver and use the channel state information (CSI) to dynamically adapt transmit power and rate according function. The service-outage-based power and rate allocation problem is stated below. In the following, we.g., wireless RF communication, dynamic allocation of resources, e.g., transmit power and in- formation rate

Franceschetti, Massimo

180

RAP: An end-to-end rate-based congestion control mechanism for realtime streams in the internet  

E-Print Network (OSTI)

Abstract-End-to-end congestion control mechanisms have been critical to the robustness and stability of the Internet. Most of today’s Internet trafftc is TCP, and we expect this to remain so in the future. Thus, having “TCP-friendly ” behavior is crucial for new applications. However, the emergence of non-congestion-controlled realtime applications threatens unfairness to competing TCP traffic and possible congestion collapse. We present an end-to-end TCP-friendly Rate Adaptation Protocol (RAP), which employs an additive-increase, multiplicativedecrease (AIMD) algorithm. It is well suited for unicast playback of realtime streams and other semi-reliable rate-based applications. Its primary goal is to be fair and TCP-friendly while separating network congestion control from application-level reliability. We evaluate RAP through extensive simulation, and conclude that bandwidth is usually evenly shared between TCP and RAP traffic. Unfairness to TCP traffic is directly determined by how TCP diverges from the AIMD algorithm. Basic RAP behaves in a TCPfriendly fashion in a wide range of likely conditions, but we also devised a fine-grain rate adaptation mechanism to extend this range further. Finally, we show that deploying RED queue management can result in an ideal fairness between TCP and RAP traffic. I.

Reza Rejaie; Mark H; Deborah Estrin

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

Analysis of Customer Enrollment Patterns in Time-Based Rate Programs - Initial Results from the SGIG Consumer Behavior Studies  

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

July 2013 July 2013 SGIG Consumer Behavior Studies - Initial Results | Page ii Table of Contents Executive Summary .............................................................................................................. iii 1. Introduction ................................................................................................................... 1 1.1 Purpose and Scope ........................................................................................................... 1 1.2 Organization of this Report .............................................................................................. 3 2. Overview of the SGIG Consumer Behavior Studies .......................................................... 4 2.1 Recruitment Methods ...................................................................................................... 5

182

Versatile high-repetition-rate phase-locked chopper system for fast timing experiments in the vacuum ultraviolet and x-ray spectral region  

SciTech Connect

A novel light chopper system for fast timing experiments in the vacuum-ultraviolet (VUV) and x-ray spectral region has been developed. It can be phase-locked and synchronized with a synchrotron radiation storage ring, accommodating repetition rates in the range of {approx}8 to {approx}120 kHz by choosing different sets of apertures and subharmonics of the ring frequency (MHz range). Also the opening time of the system can be varied from some nanoseconds to several microseconds to meet the needs of a broad range of applications. Adjusting these parameters, the device can be used either for the generation of single light pulses or pulse packages from a microwave driven, continuous He gas discharge lamp or from storage rings which are otherwise often considered as quasi-continuous light sources. This chopper can be utilized for many different kinds of experiments enabling, for example, unambiguous time-of-flight (TOF) multi-electron coincidence studies of atoms and molecules excited by a single light pulse as well as time-resolved visible laser pump x-ray probe electron spectroscopy of condensed matter in the valence and core level region.

Plogmaker, Stefan; Johansson, Erik M. J.; Rensmo, Haakan; Feifel, Raimund; Siegbahn, Hans [Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala (Sweden); Linusson, Per [Department of Physics, Stockholm University, AlbaNova University Center, SE-106 91 Stockholm (Sweden); Eland, John H. D. [Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala (Sweden); Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ (United Kingdom); Baker, Neville [Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ (United Kingdom)

2012-01-15T23:59:59.000Z

183

Time for atomic and molecular data bases is now (an overview of data management research at LLL)  

SciTech Connect

Two numerical data bases of atomic and molecular (A and M) data required for laser-induced fusion studies were created. One file contains primarily atomic energy levels and atomic transition data released by Charlotte E. Moore in NBS publications. The second file is based on the spectroscopic constants for more than 1000 molecular levels of approximately 160 heteronuclear diatomic molecules prepared by S. N. Suchard. Additional data bases are contemplated in support of the accelerating research activities in these fields. The present paucity of authenticated, computer-readable A and M data is not unlike that observed two decades ago in nuclear fission research. At that time, emphasis was also given to the accurate measurement of physical parameters and to reaction rates which eventually led to the ENDF/B series of evaluated neutron cross sections. Today, powerful computers have a more dominant role in modeling and predicting the results of promising experiments. Their effective use, however, depends more than ever before upon the availability of comprehensive and accurate files of A and M data. At the Lawrence Livermore Laboratory (LLL), these requirements are accentuated by the heavy reliance on computers. Also, trends are presently becoming apparent among users of the national computer network for Magnetic Fusion Energy, with its center at LLL, to coalesce organization-dependent data files into central data bases containing bibliographic information and numerical data as a common resource. The Data Management Research Project is collaborating with the National Bureau of Standards (NBS/NSRDS) to be able to respond to the emerging requirements. This should contribute to a ''Public Well'' of atomic and molecular data, unencumbered by legal or monetary constraints. 14 figures.

Hampel, V.E.; Henry, E.A.

1977-02-01T23:59:59.000Z

184

Real-time Shape-based Particle Separation and Detailed In-situ Particle Shape Characterization  

SciTech Connect

Particle shape is an important attribute that is very difficult to characterize. We present a new portable system that offers, for the first time, the opportunity to separate particles with different shapes and characterize their chemical and physical properties, including their dynamic shape factors (DSFs) in the transition and free-molecular regimes, with high precision, in-situ, and in real-time. The system uses a new generation aerosol particle mass analyzer (APM) to classify particles based on their masses and transport them to a differential mobility analyzer (DMA) that is used to select particles of one charge, one mass, and one shape. These highly uniform particles are ready for use and/or characterization by any application or analytical tool. We combine APM and DMA with our single particle mass spectrometer, SPLAT II, to form the ADS, and demonstrate its utility to measure in real-time individual particle compositions and vacuum aerodynamic diameters to yield, for each selected shape, particle DSFs in two flow regimes. We apply the ADS to characterize aspherical ammonium sulfate and NaCl particles and show that both particle types have wide distribution of particle shapes with DSFs from nearly 1 to 1.5.

Beranek, Josef; Imre, D.; Zelenyuk, Alla

2012-02-07T23:59:59.000Z

185

TACO-DTN: A Time-Aware COntent-based dissemination system for Delay Tolerant Networks  

E-Print Network (OSTI)

Content dissemination applications are becoming more and more popular on fixed infrastructure: in this paper we introduce TACO-DTN, a content dissemination system which, by virtue of being time-aware in terms of subscriptions and events, is appropriate for delay tolerant networks, where a number of nodes act as infostations, enjoying some form of connectivity to the backbone, and other nodes are mobile devices, reachable sometimes only through intermittent connectivity of carriers. Examples of applications benefiting from such a system could be travel information dissemination systems in large cities (exploiting infostations at bus stops) or on highways, advertisements dissemination at specific times, and information dissemination to remote villages. The approach is based on a novel concept of temporal utility of subscriptions and events. The temporal utility is used to govern the routing of the events to the right infostation (i.e., the one reached by the interested subscribers at the right time), avoiding unnecessary information transfer on slow links and the buffer management, in case buffer limitations are an issue. We give a description of our protocol and discuss its validation through simulation.

Mirco Musolesi

2007-01-01T23:59:59.000Z

186

Enhanced Prediction Techniques Based on Time-Accurate Simulations for Turbine Blade Internal Cooling  

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

Performance Computational Fluid-Thermal Science & Engineering Lab Performance Computational Fluid-Thermal Science & Engineering Lab utsr.dkt.oct05 Enhanced Prediction Techniques Based on Time-Accurate Simulations for Turbine Blade Internal Cooling Danesh Tafti SCIES Project 02- 01- SR100 DOE COOPERATIVE AGREEMENT DE-FC26-02NT41431 Tom J. George, Program Manager, DOE/NETL Richard Wenglarz, Manager of Research, SCIES Project Awarded (5/1/02, 36 Month Duration) $ 331,430 Total Contract Value ($331,430 DOE) High Performance Computational Fluid-Thermal Science & Engineering Lab utsr.dkt.oct05 Gas Turbine Need * Need for higher thermal efficiencies result in higher gas temperatures * Cooling technologies critical for increased durability * Reliable prediction tools for design - reduce costs High Performance Computational Fluid-Thermal Science & Engineering Lab

187

Neural-net based real-time economic dispatch for thermal power plants  

Science Conference Proceedings (OSTI)

This paper proposes the application of artificial neural networks to real-time optimal generation dispatch of thermal units. The approach can take into account the operational requirements and network losses. The proposed economic dispatch uses an artificial neural network (ANN) for generation of penalty factors, depending on the input generator powers and identified system load change. Then, a few additional iterations are performed within an iterative computation procedure for the solution of coordination equations, by using reference-bus penalty-factors derived from the Newton-Raphson load flow. A coordination technique for environmental and economic dispatch of pure thermal systems, based on the neural-net theory for simplified solution algorithms and improved man-machine interface is introduced. Numerical results on two test examples show that the proposed algorithm can efficiently and accurately develop optimal and feasible generator output trajectories, by applying neural-net forecasts of system load patterns.

Djukanovic, M.; Milosevic, B. [Inst. Nikola Tesla, Belgrade (Yugoslavia). Dept. of Power Systems; Calovic, M. [Univ. of Belgrade (Yugoslavia). Dept. of Electrical Engineering; Sobajic, D.J. [Electric Power Research Inst., Palo Alto, CA (United States)

1996-12-01T23:59:59.000Z

188

Test Time Reduction Reusing Multiple Processors in a Network-on-Chip Based Architecture  

E-Print Network (OSTI)

The increasing complexity and the short life cycles of embedded systems are pushing the current system-on-chip designs towards a rapid increasing on the number of programmable processing units, while decreasing the gate count for custom logic. Considering this trend, this work proposes a test planning method capable of reusing available processors as test sources and sinks, and the on-chip network as the test access mechanism. Experimental results are based on ITC'02 benchmarks and on two open core processors compliant with MIPS and SPARC instruction set. The results show that the cooperative use of both the on-chip network and the embedded processors can increase the test parallelism and reduce the test time without additional cost in area and pins.

Amory, Alexandre M; Moraes, Fernando G; Moreno, Edson I

2011-01-01T23:59:59.000Z

189

Sparsity-Based Space-Time Adaptive Processing Using OFDM Radar  

Science Conference Proceedings (OSTI)

We propose a sparsity-based space-time adaptive processing (STAP) algorithm to detect a slowly-moving target using an orthogonal frequency division multiplexing (OFDM) radar. We observe that the target and interference spectra are inherently sparse in the spatio-temporal domain, and hence we exploit that sparsity to develop an efficient STAP technique. In addition, the use of an OFDM signal increases the frequency diversity of our system, as different scattering centers of a target resonate at different frequencies, and thus improves the target detectability. First, we formulate a realistic sparse-measurement model for an OFDM radar considering both the clutter and jammer as the interfering sources. Then, we show that the optimal STAP-filter weight-vector is equal to the generalized eigenvector corresponding to the minimum generalized eigenvalue of the interference and target covariance matrices. To estimate the target and interference covariance matrices, we apply a residual sparse-recovery technique that enables us to incorporate the partially known support of the sparse vector. Our numerical results demonstrate that the sparsity-based STAP algorithm, with considerably lesser number of secondary data, produces an equivalent performance as the other existing STAP techniques.

Sen, Satyabrata [ORNL

2012-01-01T23:59:59.000Z

190

Limits on the Time Variation of the Fermi Constant G_F Based on Type Ia Supernova Observations  

E-Print Network (OSTI)

The light curve of a type Ia supernova decays at a rate set by the beta-decay lifetimes of the Ni-56 and Co-56 produced in the explosion. This makes such a light curve sensitive to the value of the Fermi constant G_F at the time of the supernova. Using data from the CfA Supernova Archive, we measure the dependence of the light curve decay rate on redshift and place a bound on the time variation of G_F of |(dG_F/dt)/G_F| < 10^(-9) / y.

Ferrero, Alejandro

2010-01-01T23:59:59.000Z

191

A Comprehensive Statistically-Based Method to Interpret Real-Time Flowing Measurements  

DOE Green Energy (OSTI)

This project is motivated by the increasing use of distributed temperature sensors for real-time monitoring of complex wells (horizontal, multilateral and multi-branching wells) to infer the profiles of oil, gas, and water entry. Measured information can be used to interpret flow profiles along the wellbore including junction and build section. In this second project year, we have completed a forward model to predict temperature and pressure profiles in complex wells. As a comprehensive temperature model, we have developed an analytical reservoir flow model which takes into account Joule-Thomson effects in the near well vicinity and multiphase non-isothermal producing wellbore model, and couples those models accounting mass and heat transfer between them. For further inferences such as water coning or gas evaporation, we will need a numerical non-isothermal reservoir simulator, and unlike existing (thermal recovery, geothermal) simulators, it should capture subtle temperature change occurring in a normal production. We will show the results from the analytical coupled model (analytical reservoir solution coupled with numerical multi-segment well model) to infer the anomalous temperature or pressure profiles under various conditions, and the preliminary results from the numerical coupled reservoir model which solves full matrix including wellbore grids. We applied Ramey's model to the build section and used an enthalpy balance to infer the temperature profile at the junction. The multilateral wellbore temperature model was applied to a wide range of cases varying fluid thermal properties, absolute values of temperature and pressure, geothermal gradients, flow rates from each lateral, and the trajectories of each build section.

Pinan Dawkrajai; Keita Yoshioka; Analis A. Romero; Ding Zhu; A.D. Hill; Larry W. Lake

2005-10-01T23:59:59.000Z

192

Prediction of paroxysmal atrial fibrillation based on non-linear analysis and spectrum and bispectrum features of the heart rate variability signal  

Science Conference Proceedings (OSTI)

In this paper, an effective paroxysmal atrial fibrillation (PAF) prediction algorithm is presented, which is based on analysis of the heart rate variability (HRV) signal. The proposed method consists of a preprocessing step for QRS detection and HRV ... Keywords: Bispectrum, Heart rate variability, Non-linear analysis, Paroxysmal atrial fibrillation, Prediction, Spectrum, Support vector machines

Maryam Mohebbi; Hassan Ghassemian

2012-01-01T23:59:59.000Z

193

Phenomenology for Supernova Ia Data Based on a New Cosmic Time  

E-Print Network (OSTI)

A new phenomenological theory for the expansion of our universe is presented. Because fundamental supporting theory is still in development, its discussion is not presented in this paper. The theory is based on a new algebraic expression for cosmic time G Rho t^2=3/32Pi, which correctly predicts the WMAP measured cosmological constants and the fundamental Hubble parameter H(t) for the expansion of the universe. A replacement for dark matter, called here "dark mass", is proposed which scales as with the expansion and incorporated. It does not react with ordinary matter, except gravitationally, and produces flat rotational curves for spiral galaxies. Also a new expression for the approaching velocity of radiation in a closed 3-sphere expanding universe is given that accounts for the early degrading negative approach of radiation for z > 1.7. The expression is v = Hr-c. Combining these three elements produces a luminosity distance dL that successfully predicts the apparent magnitude of exploding supernova Ia stars and even the new gamma ray bursts with no need for dark energy or acceleration of the expansion of the universe.

Charles B. Leffert

2007-07-26T23:59:59.000Z

194

Formal Analysis and Validation of Continuous-Time Markov Chain based System Level Power Management Strategies  

E-Print Network (OSTI)

. The system is usually specified as state transition system, with probability measures on the rate is served // (iii) transitions between the sleep and idle states are controlled by the PM // rates of local profile of the system by putting its components into power/energy states which are suf- ficient to meet

Gupta, Rajesh

195

A test for second order stationarity of a time series based on the Discrete Fourier Transform -Technical report  

E-Print Network (OSTI)

A test for second order stationarity of a time series based on the Discrete Fourier Transform stationary. Exploiting this important property, we construct a Portmanteau type test statistic for testing stationarity of the time series. It is shown that under the null of stationarity, the test statistic has

Subba Rao, Suhasini

196

Real-time estimation of olive oil quality parameters: a combined approach based on ANNs and machine vision  

Science Conference Proceedings (OSTI)

The present work describes a combined approach based on Artificial Neural Networks and Machine Vision for the real-time estimation of some qualitative olive oil parameters. The proposed methodology proves to be a useful tool for the real-time estimation ... Keywords: ANNs, acidity, machine vision, olive oil, peroxides, ripeness, sanitation condition

Monica Carfagni; Marco Daou; Rocco Furferi

2008-07-01T23:59:59.000Z

197

The design and implementation of real-time environment monitoring systems based on wireless sensor networks  

Science Conference Proceedings (OSTI)

This research focuses on the implementation of a real-time environment monitoring system for environment detection using wireless sensor networks. The purpose of our research is to construct the system on the real-time environment with the technology ...

Kyung-Hoon Jung; Seok-Cheol Lee; Hyun-Suk Hwang; Chang-Soo Kim

2006-05-01T23:59:59.000Z

198

Modular and deformable touch-sensitive surfaces based on time domain reflectometry  

Science Conference Proceedings (OSTI)

Time domain reflectometry, a technique originally used in diagnosing cable faults, can also locate where a cable is being touched. In this paper, we explore how to extend time domain reflectometry in order to touch-enable thin, modular, and deformable ... Keywords: TDR, capacitive sensing, deformable, input, time domain reflectometry, touch sensing, wearable

Raphael Wimmer; Patrick Baudisch

2011-10-01T23:59:59.000Z

199

Semiconductor-based all-optical switching for optical time-division multiplexed networks  

E-Print Network (OSTI)

All-optical switching will likely be required for future optical networks operating at data rates which exceed electronic processing speeds. Switches utilizing nonlinearities in semiconductor optical amplifiers (SOA) are ...

Robinson, Bryan S. (Bryan Shawn), 1975-

2003-01-01T23:59:59.000Z

200

Assessing the Value of Regulation Resources Based on Their Time Response Characteristics  

DOE Green Energy (OSTI)

Fast responsive regulation resources are potentially more valuable as a power system regulation resource (more efficient) because they allow applying controls at the exact moment and in the exact amount as needed. Faster control is desirable because it facilitates more reliable compliance with the NERC Control Performance Standards at relatively lesser regulation capacity procurements. The current California ISO practices and markets do not provide a differentiation among the regulation resources based on their speed of response (with the exception of some minimum ramping capabilities). Some demand response technologies, including some generation and energy storage resources, can provide quicker control actions. California ISO practices and markets could be updated to welcome more fast regulation resources into the California ISO service area. The project work reported in this work was pursuing the following objectives: • Develop methodology to assess the relative value of generation resources used for regulation and load following California ISO functions • This assessment should be done based on physical characteristics including the ability to quickly change their output following California ISO signals • Evaluate what power is worth on different time scales • Analyze the benefits of new regulation resources to provide effective compliance with the mandatory NERC Control Performance Standards • Evaluate impacts of the newly proposed BAAL and FRR standards on the potential value of fast regulation and distributed regulation resources • Develop a scope for the follow-up projects to pave a road for the new efficient types of balancing resources in California. The work included the following studies: • Analysis of California ISO regulating units characteristics • California ISO automatic generation system (AGC) analysis • California ISO regulation procurement and market analysis • Fast regulation efficiency analysis • Projection of the California ISO load following and regulation requirements into the future • Value of fast responsive resources depending on their ramping capability • Potential impacts of the balancing authority area control error limit (BAAL), which is a part of the newly proposed NERC standard “Balancing Resources and Demand” • Potential impacts of the Western Electricity Coordinating Council (WECC) frequency responsive reserve (FRR) standard • Recommendations for the next phase of the project. The following main conclusions and suggestions for the future have been made: • The analysis of regulation ramping requirements shows that the regulation system should be able to provide ramps of at least 40-60 MW per minute for a period up to 6 minutes. • Evaluate if changes are needed in the California ISO AGC system to effectively accommodate new types of fast regulation resources and minimize the California ISO regulation procurement. • California ISO may consider creating better market opportunities for and incentives for fast responsive resources. • An additional study of low probability high ramp events can be recommended to the California ISO. • The California ISO may be willing to consider establishing a more relaxed target CPS2 compliance level. • A BAAL-related study can be recommended for the California ISO as soon as more clarity is achieved concerning the actual enforcement of the BAAL standard and its numerical values for the California ISO. The study may involve an assessment of advantages of the distributed frequency-based control for the California ISO system. The market-related issues that arise in this connection can be also investigated. • A FRR-related study can be recommended for the California ISO as soon as more clarity is achieved concerning the actual enforcement of the FRR standard and its numerical values for the California ISO.

Makarov, Yuri V.; Lu, Shuai; Ma, Jian; Nguyen, Tony B.

2008-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

High Efficiency and High Rate Deposited Amorphous Silicon-Based Solar Cells: Final Technical Report, 1 September 2001--6 March 2005  

SciTech Connect

The objectives for the University of Toledo are to: (1) establish a transferable knowledge and technology base for fabricating high-efficiency triple-junction a-Si-based solar cells, and (2) develop high-rate deposition techniques for the growing a-Si-based and related alloys, including poly-Si, c-Si, a-SiGe, and a-Si films and photovoltaic devices with these materials.

Deng, X.

2006-01-01T23:59:59.000Z

202

New Hardware and Software Design of a Field-Deployable Real-Time Laser-Based Non-Intrusive Detection System for Measurement of True Travel Time on the Highway  

E-Print Network (OSTI)

Time Laser-Based Prototype Detection System for MeasurementLaser-Based Non-Intrusive Detection System for MeasurementLaser-Based Non-Intrusive Detection System for Measurement

2001-01-01T23:59:59.000Z

203

Aging, rejuvenation and thixotropy in complex fluids. Time-dependence of the viscosity at rest and under constant shear rate or shear stress  

E-Print Network (OSTI)

Complex fluids exhibit time-dependent changes in viscosity that have been ascribed to both thixotropy and aging. However, there is no consensus for which phenomenon is the origin of which changes. A novel thixotropic model is defined that incorporates aging. Conditions under which viscosity changes are due to thixotropy and aging are unambiguously defined. Viscosity changes in a complex fluid during a period of rest after destructuring exhibit a bifurcation at a critical volume fraction PHIc2. For volume fractions less than PHIc2, the viscosity remains finite in the limit t => infinite. For volume fractions above critical the viscosity grows without limit, so aging occurs at rest. At constant shear rate there is no bifurcation, whereas under constant shear stress the model predicts a new bifurcation in the viscosity at a critical stress sB, identical to the yield stress sy observed under steady conditions. The divergence of the viscosity for stress s sB is best defined as aging. However, for s > sB, where the viscosity remains finite, it seems preferable to use the concepts of restructuring and destructuring, rather than aging and rejuvenation. Nevertheless, when a stress sA (sB) is applied during aging, slower aging is predicted and discussed as true rejuvenation. Plastic behaviour is predicted under steady conditions when s > sB. The Herschel-Bulkley model fits the flow curve for stresses close to sB, whereas the Bingham model gives a better fit for s >> sB. Finally, the model's predictions are shown to be consistent with experimental data from the literature for the transient behaviour of laponite gels.

Daniel Quemada

2008-08-25T23:59:59.000Z

204

The blade flutter measurement based on the blade tip timing method  

Science Conference Proceedings (OSTI)

This paper deals with the measurement of the steam turbine blade vibrations in power systems via the blade tip timing (BTT) method. It describes a BTT principle and the sensor instrumentation for the vibration measurement. The introductory part of the ... Keywords: FPGA, blade tip timing, blade vibration, eddy current sensors, turbine

Vja?eslav Georgiev; Michael Holík; Václav Kraus; Aleš Krutina; Zden?k Kubín; Jind?ich Liška; Martin Poupa

2011-07-01T23:59:59.000Z

205

A time-based energy-efficient analog-to-digital converter  

E-Print Network (OSTI)

Dual-slope converters use time to perform analog-to-digital conversion but require 2N+1 clock cycles to achieve N bits of precision. We describe a novel algorithm that also uses time to perform analog-to-digital conversion ...

Yang, Heemin Yi, 1976-

2006-01-01T23:59:59.000Z

206

Time Series Prediction of Mining Subsidence Based on Genetic Algorithm Neural Network  

Science Conference Proceedings (OSTI)

In order to find out the dynamics law of underground coal mining subsidence, BP neural network was used for time series prediction. First, genetic algorithm was used to optimize the initial network weight to overcome the inherent defects of BP neural ... Keywords: Mining subsidence, time series, BP neural network, genetic algorithm

Peixian Li; Zhixiang Tan; Lili Yan; Kazhong Deng

2011-07-01T23:59:59.000Z

207

Investigating the impacts of time-of-use electricity rates on lower-income and senior-headed households: A case study of Milton, Ontario (Canada).  

E-Print Network (OSTI)

??Through the Smart Metering Initiative in the Canadian province of Ontario, all residential electricity customers will be converted from a tiered rate regime to a… (more)

Simmons, Sarah Ivy

2010-01-01T23:59:59.000Z

208

Formal Analysis and Validation of ContinuousTime Markov Chain based System Level Power Management Strategies  

E-Print Network (OSTI)

. The system is usually specified as state transition system, with probability measures on the rate profile of the system by putting its components into power/energy states which are suf­ ficient to meet to a single lower power state) of the system. Stochastic optimum control is a well­ researched area [1, 23, 2

Oxford, University of

209

Multi-mutational model for cancer based on age-time patterns of radiation effects: 2. Biological aspects  

SciTech Connect

Biological properties of relevance when modeling cancers induced in the atom bomb survivors include the wide distribution of the induced cancers across all organs, their biological indistinguishability from background cancers, their rates being proportional to background cancer rates, their rates steadily increasing over at least 50 years as the survivors age, and their radiation dose response being linear. We have successfully described this array of properties with a modified Armitage-Doll model using 5 to 6 somatic mutations, no intermediate growth, and the dose-related replacement of any one of these time-driven mutations by a radiation-induced mutation. Such a model is contrasted to prevailing models that use fewer mutations combined with intervening growth. While the rationale and effectiveness of our model is compelling for carcinogenesis in the atom bomb survivors, the lack of a promotional component may limit the generality of the model for other types of human carcinogenesis.

Mendelsohn, M.L.; Pierce, P.A.

1997-09-04T23:59:59.000Z

210

Multifunctional Nanowire/Film Composites-Based Bimodular Sensors for In Situ, Real-Time High Temperature Gas Detection  

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

Multifunctional Nanowire/Film Multifunctional Nanowire/Film Composites-Based Bimodular Sensors for In Situ, Real-Time High Temperature Gas Detection Background Real time monitoring of combustion gas composition is important for improving the efficiency of combustion processes and reducing the emission of pollutants. However, such measurement usually requires sensors to be operated at high temperatures in harsh environments. Currently, commercially available sensor technology capable of withstanding such harsh environments is extremely

211

Development of an FPGA-based System for Real-Time Simulation of  

Science Conference Proceedings (OSTI)

Photovoltaic (PV) simulators are indispensable for the laboratory operational evaluation of PV energy production system components (e.g. battery chargers, DC/AC inverters etc.), in order to avoid the time-consuming and expensive field-testing process. ...

Eftichios Koutroulis; Kostas Kalaitzakis; Vasileios Tzitzilonis

2006-06-01T23:59:59.000Z

212

Real-time network traffic prediction based on a multiscale decomposition  

Science Conference Proceedings (OSTI)

The presence of the complex scaling behavior in network traffic makes accurate forecasting of the traffic a challenging task. In this paper we propose a multiscale decomposition approach to real time traffic prediction. The raw traffic data is first ...

Guoqiang Mao

2005-04-01T23:59:59.000Z

213

A New Statistical–Dynamical Downscaling Procedure Based on EOF Analysis for Regional Time Series Generation  

Science Conference Proceedings (OSTI)

A new statistical–dynamical downscaling procedure is developed and then applied to high-resolution (regional) time series generation and wind resource assessment. The statistical module of the new procedure uses empirical orthogonal function (EOF) ...

Yosvany Martinez; Wei Yu; Hai Lin

2013-04-01T23:59:59.000Z

214

Determination of Storage Time of Rice Seed Using ANN Based on NIRS  

Science Conference Proceedings (OSTI)

A simple, fast and nondestructive approach was put forward to classify rice seed of different storage time. This discrimination was conducted by integrated with wavelet transform (WT), principal component analysis (PCA) and artificial neural networks ...

Zhu Dengsheng; Li Xiaoli

2007-06-01T23:59:59.000Z

215

Real-time timbral organisation: Selecting samples based upon similarity1  

Science Conference Proceedings (OSTI)

A comparison is made between two systems of real-time sample selection using timbral proximity that has relevance for live performance. Sound files in large sample libraries are analysed for audio features (amplitude RMS, spectral centroid, spectral ...

Arne Eigenfeldt; Philippe Pasquier

2010-08-01T23:59:59.000Z

216

A picosecond time-resolved electron energy spectrometer based on Cerenkov radiation  

Science Conference Proceedings (OSTI)

The energy spectrum of relativistic electrons is an important characterization of high intensity laser-matter interactions. We present a technique that utilizes Cerenkov radiation to measure the time-resolved energy distribution of electrons. Electrons escaping from targets irradiated by high-intensity laser pulses were measured, demonstrating the feasibility of such a novel diagnostic. Limitations on the time resolution of this diagnostic are also discussed.

Elberson, Lee N.; Hill, Wendell T. III [Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742 (United States); Ping, Yuan; Shepherd, Ronnie L.; Patel, Pravesh K.; Mackinnon, Andrew J. [Lawrence Livermore National Laboratory, Livermore, California 94550-9234 (United States)

2009-02-15T23:59:59.000Z

217

Natural Gas Conveyance and Rates  

Reports and Publications (EIA)

Natural gas transportation market; Competition vs. market power; Rate structures Cost-of-service Performance based rates

Information Center

2001-02-01T23:59:59.000Z

218

Laser-based irradiation apparatus and method to measure the functional dose-rate response of semiconductor devices  

DOE Patents (OSTI)

A broad-beam laser irradiation apparatus can measure the parametric or functional response of a semiconductor device to exposure to dose-rate equivalent infrared laser light. Comparisons of dose-rate response from before, during, and after accelerated aging of a device, or from periodic sampling of devices from fielded operational systems can determine if aging has affected the device's overall functionality. The dependence of these changes on equivalent dose-rate pulse intensity and/or duration can be measured with the apparatus. The synchronized introduction of external electrical transients into the device under test can be used to simulate the electrical effects of the surrounding circuitry's response to a radiation exposure while exposing the device to dose-rate equivalent infrared laser light.

Horn, Kevin M. (Albuquerque, NM)

2008-05-20T23:59:59.000Z

219

Multidimensional Forward-in-Time and Upstream-in-Space-Based Differencing for Fluids  

Science Conference Proceedings (OSTI)

Multidimensional advection schemes based on the forward-upstream discretization are presented that with only one corrective step produce solutions comparable to the most accurate solutions produced by the multidimensional positive definite ...

Helge Drange; Rainer Bleck

1997-04-01T23:59:59.000Z

220

Playable universal capture: compression and real-time sequencing of image-based facial animation  

Science Conference Proceedings (OSTI)

This paper describes a facial animation playback scheme based on simultaneous encoding of captured face textures and geometric positions. The high quality facial data is acquired using a more robust variant of the Universal Capture (UCap) technique that ...

George Borshukov; Jefferson Montgomery; Witek Werner

2006-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

Time-domain Simulation of Multibody Floating Systems based on State-space Modeling Technology  

E-Print Network (OSTI)

A numerical scheme to simulate time-domain motion responses of multibody floating systems has been successfully proposed. This scheme is integrated into a time-domain simulation tool, with fully coupled hydrodynamic coefficients obtained from the hydrodynamic software - WAMIT which solves the Boundary Value Problem (BVP). The equations of motion are transformed into standard state-space format, using the constant coefficient approximation and the impulse response function method. Thus the Ordinary Differential Equation (ODE) solvers in MATLAB can be directly employed. The time-domain responses of a single spar at sea are initially obtained. The optimal Linear Quadratic Regulator (LQR) controller is further applied to this single spar, by assuming that the Dynamic Positioning (DP) system can provide the optimized thruster forces. Various factors that affect the controlling efficiency, e.g., the time steps ?? and ?t, the weighting factors(Q,R), are further investigated in detail. Next, a two-body floating system is studied. The response amplitude operators (RAOs) of each body are calculated and compared with the single body case. Then the effects of the body-to-body interaction coefficients on the time-domain responses are further investigated. Moreover, the mean drift force is incorporated in the DP system to further mitigate the motion responses of each body. Finally, this tool is extended to a three-body floating system, with the relative motions between them derived.

Yu, Xiaochuan

2011-08-01T23:59:59.000Z

222

An FPGA Based Multiprocessing CPU for Beam Synchronous Timing in CERN's SPS and LHC  

E-Print Network (OSTI)

The Beam Synchronous Timing system (BST) will be used around the LHC and its injector, the SPS, to broadcast timing meassages and synchronize actions with the beam in different receivers. To achieve beam synchronization, the BST Master card encodes messages using the bunch clock, with a nominal value of 40.079 MHz for the LHC. These messages are produced by a set of tasks every revolution period, which is every 89 us for the LHC and every 23 us for the SPS, therefore imposing a hard real-time constraint on the system. To achieve determinism, the BST Master uses a dedicated CPU inside its main Field Programmable Gate Array (FPGA) featuring zero-delay hardware task switching and a reduced instruction set. This paper describes the BST Master card, stressing the main FPGA design, as well as the associated software, including the LynxOS driver and the tailor-made assembler.

Ballester, F J; Gras, J J; Lewis, J; Savioz, J J; Serrano, J

2003-01-01T23:59:59.000Z

223

Microcontroller based system for electrical breakdown time delay measurement in gas-filled devices  

SciTech Connect

This paper presents realization of a digital embedded system for measuring electrical breakdown time delay. The proposed system consists of three major parts: dc voltage supply, analog subsystem, and a digital subsystem. Any dc power source with the range from 100 to 1000 V can be used in this application. The analog subsystem should provide fast and accurate voltage switching on the testing device as well as transform the signals that represent the voltage pulse on the device and the device breakdown into the form suitable for detection by a digital subsystem. The insulated gate bipolar transistor IRG4PH40KD driven by TC429 MOSFET driver is used for high voltage switching on the device. The aim of a digital subsystem is to detect the signals from the analog subsystem and to measure the elapsed time between their occurrences. Moreover, the digital subsystem controls various parameters that influence time delay and provides fast data storage for a large number of measured data. For this propose, we used the PIC18F4550 microcontroller with a full-speed compatible universal serial bus (USB) engine. Operation of this system is verified on different commercial and custom made gas devices with different structure and breakdown mechanisms. The electrical breakdown time delay measurements have been carried out as a function of several parameters, which dominantly influence electrical breakdown time delay. The obtained results have been verified using statistical methods, and they show good agreement with the theory. The proposed system shows good repeatability, sensitivity, and stability for measuring the electrical breakdown time delay.

Pejovic, Milic M.; Denic, Dragan B.; Pejovic, Momcilo M.; Nesic, Nikola T.; Vasovic, Nikola [Faculty of Electronic Engineering, University of Nis, Aleksandra Medvedeva 14, 18000 Nis (Serbia)

2010-10-15T23:59:59.000Z

224

Time growth rate and field profiles of hybrid modes excited by a relativistic elliptical electron beam in an elliptical metallic waveguide with dielectric rod  

Science Conference Proceedings (OSTI)

The dispersion relation of guided electromagnetic waves propagating in an elliptical metallic waveguide with a dielectric rod driven by relativistic elliptical electron beam (REEB) is investigated. The electric field profiles and the growth rates of the waves are numerically calculated by using Mathieu functions. The effects of relative permittivity constant of dielectric rod, accelerating voltage, and current density of REEB on the growth rate are presented.

Jazi, B.; Rahmani, Z.; Abdoli-Arani, A. [Faculty of Physics, Department of Laser and Photonics, University of Kashan, Kashan (Iran, Islamic Republic of); Heidari-Semiromi, E. [Faculty of Physics, Department of Condense Matter, University of Kashan, Kashan (Iran, Islamic Republic of)

2012-10-15T23:59:59.000Z

225

CMOS Open Defect Detection Based on Supply Current in Time-Variable Electric Field and Supply Voltage Application  

Science Conference Proceedings (OSTI)

In this paper, a new test method is proposed for detecting open defects in CMOS ICs. The method is based on supply current of ICs generated by applying time-variable supply voltage and electric field from the outside of the ICs. The feasibility of the ...

Masaki Hashizume; Masahiro Ichimiya; Hiroyuki Yotsuyanagi; Takeomi Tamesada

2001-11-01T23:59:59.000Z

226

A novel real-time coalminer localization and tracking system based on self-organized sensor networks  

Science Conference Proceedings (OSTI)

With the development of information technology, we envision that the key of improving coal mine safety is how to get realtime positions of miners. In this paper, we propose a prototype system for real-time coal miner localization and tracking based on ...

Yang Wang; Liusheng Huang; Wei Yang

2010-02-01T23:59:59.000Z

227

A 4th order continuous-time [Delta] [Epsilon] ADC with VCO-based integrator and quantizer  

E-Print Network (OSTI)

The use of a VCO-based integrator and quantizer within a continuous-time (CT) [Delta] [Epsilon] analog-to-digital converter (ADC) structure is explored, and a custom prototype in a 0.13 [mu]m CMOS with a measured performance ...

Park, Matthew Jeremiah

2009-01-01T23:59:59.000Z

228

Direct atomic-orbital-based time-dependent Hartree-Fock calculations of frequency-dependent polarizabilities  

E-Print Network (OSTI)

Direct atomic-orbital-based time-dependent Hartree-Fock calculations of frequencyDepartment, Universityof Utah, Salt Lake City, Utah 84112 (Received 27 September 1991; accepted 13 November 1991) We have formulated and implemented a direct atomic integral driven method for the calculation of frequency

Simons, Jack

229

A view-based real-time human action recognition system as an interface for human computer interaction  

Science Conference Proceedings (OSTI)

This paper describes a real-time human action recognition system that can track multiple persons and recognize distinct human actions through image sequences acquired from a single fixed camera. In particular, when given an image, the system segments ... Keywords: HCI, adaptive background subtraction, motion history image, view-based action recognition

Jin Choi; Yong-Il Cho; Taewoo Han; Hyun S. Yang

2007-09-01T23:59:59.000Z

230

Quality time-of-flight range imaging for feature-based registration using bacterial foraging  

Science Conference Proceedings (OSTI)

Image registration is a widely tackled research topic in the computer vision and the computer graphics fields. This problem aims to find an optimal transformation or correspondence between images acquired under different conditions. Recently, a new 3D ... Keywords: 3D modelling, Bacterial foraging, Evolutionary computation, Image registration, Time of flight

E. Bermejo, O. CordóN, S. Damas, J. SantamaríA

2013-06-01T23:59:59.000Z

231

A class of learning algorithms for principal component analysis based on time-oriented hierarchical method  

Science Conference Proceedings (OSTI)

This paper presents a class of algorithms for principal component analysis obtained by modification of a class of algorithms for principal subspace analysis (PSA) known as Plumbley's General Stochastic Approximation. Modification of the algorithms is ... Keywords: PCA, PSA, general stochastic approximation, neural networks, time hierarchy

Marko V. Jankovic

2006-04-01T23:59:59.000Z

232

Chaotic Time Series Forecasting Base on Fuzzy Adaptive PSO for Feedforward Neural Network Training  

Science Conference Proceedings (OSTI)

Short-term electricity demand forecasting for the next hour to several days out is one of the most important tools by which an electric utility plans and dispatches the loading of generating units in order to meet system demand. But there exists chaos ... Keywords: Particle Swarm Optimization (PSO), chaotic time Series, fuzzy system, feedforward neural network

Wenyu Zhang; Jinzhao Liang; Jianzhou Wang; Jinxing Che

2008-11-01T23:59:59.000Z

233

Development of an FPGA-based system for real-time simulation of photovoltaic modules  

Science Conference Proceedings (OSTI)

Photovoltaic (PV) simulators are indispensable for the operational evaluation of PV energy production system components (e.g. battery chargers, DC/AC inverters, etc.), in order to avoid the time-consuming and expensive field-testing process. In this ... Keywords: DC/DC converter, Field programmable gate array, Photovoltaic system, Rapid system prototyping, Simulator

Eftichios Koutroulis; Kostas Kalaitzakis; Vasileios Tzitzilonis

2009-07-01T23:59:59.000Z

234

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

235

Real-time haptic incision simulation using FEM-based discontinuous free form deformation  

Science Conference Proceedings (OSTI)

Computer-aided surgical simulation is a topic of increasingly extensive research. Computer graphics, geometric modeling and finite-element analysis all play major roles in these simulations. Furthermore, real-time response, interactivity and accuracy ... Keywords: finite element model, free-form deformation, surgical simulation

Guy Sela; Jacob Subag; Alex Lindblad; Dan Albocher; Sagi Schein; Gershon Elber

2006-06-01T23:59:59.000Z

236

Simulation-based utility assessment of real-time information for sustainable mining operations  

Science Conference Proceedings (OSTI)

In capital intensive industries such as coalmines, real-time information is useful to run their operations within sustainable limits, and to enable early detection and response to deviations from those limits. The goal of this research is to assess the ...

Sai Srinivas Nageshwaraniyer; Chao Meng; Young-Jun Son; Sean Dessureault

2011-12-01T23:59:59.000Z

237

Technical Section: Stream-based animation of real-time crowd scenes  

Science Conference Proceedings (OSTI)

We present a new way of drawing a crowd of animated characters in real-time. Previous work has focused almost exclusively on how to visualize ever larger crowd scenes and the current state-of-the-art can display tens of thousands of virtual humans with ... Keywords: Animation, Crowd simulation, OpenCL

Wayne Daniel Lister; Andy Day

2012-10-01T23:59:59.000Z

238

Real-time location and inpatient care systems based on passive RFID  

Science Conference Proceedings (OSTI)

RFID technology meets identification and tracking requirements in healthcare environments with potential to speed up and increase reliability of involved processes. Due to this, high expectations for this integration have emerged, but hospital and medical ... Keywords: EPC Gen1&2 performance, Hospital information system, Inpatient management, Medical asset management, Real-time location system

Pablo Najera; Javier Lopez; Rodrigo Roman

2011-05-01T23:59:59.000Z

239

A multi-category inter-purchase time model based on hierarchical Bayesian theory  

Science Conference Proceedings (OSTI)

Because of recent diversity in consumer demands and the decrease in popularity of mass media, one-to-one database marketing is being increasingly used by companies to increase their competitiveness. Many studies have addressed the issue of inter-purchase ... Keywords: Catalog shopping, Hierarchical Bayesian model, Inter-purchase time

Ruey-Shan Guo

2009-04-01T23:59:59.000Z

240

Time Series Measurements from a Moored Fluorescence-Based Dissolved Oxygen Sensor  

Science Conference Proceedings (OSTI)

We present an analysis of time-series measurements from a prototype fluorescence-quenching dissolved oxygen sensor moored for a six-day period in late March 1987 at 100 m depth in Saanich Inlet, British Columbia. Temporal variations in dissolved ...

Richard E. Thomson; Terrence A. Curran; M. Coreen Hamilton; Ronald McFarlane

1988-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

Real-Time Obstacle Avoidance Method for Mobile Robots Based on a Modified Particle Swarm Optimization  

Science Conference Proceedings (OSTI)

A novel method for the robot path planning in dynamic environment is presented in this paper. Based on the analysis of visual modeling, the reason of premature convergence and diversity loss in PSO is explained, and a new modified algorithm is proposed ... Keywords: Obstacle Avoidance, Particle Swarm Optimization, path planning

Yuxin Zhao; Wei Zu

2009-04-01T23:59:59.000Z

242

Automated CO2 and VOC-Based Control of Ventilation Systems Under Real-Time Pricing  

Science Conference Proceedings (OSTI)

The potential for shedding or shifting building electric loads in response to real-time prices (RTP) can be significant. Such a strategy provides cost reduction opportunities for commercial building customers as well as load reduction opportunities for electric utilities. This report describes the successful demonstration of an integrated RTP sensor/control system designed to increase the energy efficiency of building ventilation systems, while maintaining indoor air quality via CO2 and volatile organic ...

1998-11-02T23:59:59.000Z

243

A Gas Dynamics Method Based on The Spectral Deferred Corrections (SDC) Time Integration Technique and The Piecewise Parabolic Method (PPM)  

SciTech Connect

We present a computational gas dynamics method based on the Spectral Deferred Corrections (SDC) time integration technique and the Piecewise Parabolic Method (PPM) finite volume method. The PPM framework is used to define edge averaged quantities which are then used to evaluate numerical flux functions. The SDC technique is used to integrate solution in time. This kind of approach was first taken by Anita et al in [17]. However, [17] is problematic when it is implemented to certain shock problems. Here we propose significant improvements to [17]. The method is fourth order (both in space and time) for smooth flows, and provides highly resolved discontinuous solutions. We tested the method by solving variety of problems. Results indicate that the fourth order of accuracy in both space and time has been achieved when the flow is smooth. Results also demonstrate the shock capturing ability of the method.

Samet Y. Kadioglu

2011-12-01T23:59:59.000Z

244

Next-Generation Liquid-Scintillator-Based Detectors: Quantums Dots and Picosecond Timing  

E-Print Network (OSTI)

Liquid-scintillator-based detectors are a robust technology that scales well to large volumes. For this reason, they are attractive for experiments searching for neutrinoless double-beta decay. A combination of improved photo-detection technology and novel liquid scintillators may allow for the extraction of particle direction in addition to the total energy of the particle. Such an advance would find applications beyond searches for neutrinoless double-beta decay.

Lindley Winslow

2013-07-10T23:59:59.000Z

245

USING RISK-BASED STANDARDS WILL SHORTEN CLEANUP TIME AT PETROLEUM CONTAMINATED SITES  

E-Print Network (OSTI)

The Air Force has identified more than 4,500 sites that require environmental investigation and possible remediation. About 2,500 of these are contaminated with petroleum hydrocarbons such as jet fuel, diesel, gasoline, and heating oil. Many of the sites that require remediation will be cleaned up based on an established regulatory standard. Many state and federal regulators routinely enforce a soil cleanup standard of 100 mg/kg total petroleum hydrocarbons (TPH). Several states have lowered this standard to 50 mg/kg TPH just for "good measure." The 100 mg/kg TPH standard is often used across the board--without regard for the type of petroleum hydrocarbon contamination being remediated and with little thought about the risk-based standards on which that figure was established. But where exactly did the number come from and and how did it become a standard in the first place? The answer can be traced to the California Leaking Underground Fuel Tank Field Manual, or LUFT, a manual designed to provide a consistent approach to underground storage tank spills (State of California, 1989). The LUFT manual clearly illustrates that the 100 mg/kg TPH standard is based on a

Lieutenant Colonel; Ross N. Miller; Lieutenant Colonel; Ross N. Miller

1992-01-01T23:59:59.000Z

246

ParaGraph-RTS: A parallel reduction-based run-time system  

Science Conference Proceedings (OSTI)

We are investigating the use of the functional programming paradigm on multiprocessor computers. We have developed a parallel graph reduction run-time system called ParaGraph-RTS (Parallel Graph Reduction) that provides both significant amounts of exploitable parallelism and the robustness to support development of large scientific codes. This system allows us to empirically investigate the functional programming paradigm within computationally intensive application domains. In this paper, we describe an implementation of ParaGraph-RTS on a shared-memory multiprocessor. The implementation strategy reflects insights gained through performance characterizations of the reduction process. Preliminary performance results and analyses are presented. 8 refs., 4 figs.

Yantis, B.; Rich, D.; Michelsen, R.

1989-01-01T23:59:59.000Z

247

FPGA Based Real-time Network Traffic Analysis using Traffic Dispersion Patterns  

SciTech Connect

The problem of Network Traffic Classification (NTC) has attracted significant amount of interest in the research community, offering a wide range of solutions at various levels. The core challenge is in addressing high amounts of traffic diversity found in today's networks. The problem becomes more challenging if a quick detection is required as in the case of identifying malicious network behavior or new applications like peer-to-peer traffic that have potential to quickly throttle the network bandwidth or cause significant damage. Recently, Traffic Dispersion Graphs (TDGs) have been introduced as a viable candidate for NTC. The TDGs work by forming a network wide communication graphs that embed characteristic patterns of underlying network applications. However, these patterns need to be quickly evaluated for mounting real-time response against them. This paper addresses these concerns and presents a novel solution for real-time analysis of Traffic Dispersion Metrics (TDMs) in the TDGs. We evaluate the dispersion metrics of interest and present a dedicated solution on an FPGA for their analysis. We also present analytical measures and empirically evaluate operating effectiveness of our design. The mapped design on Virtex-5 device can process 7.4 million packets/second for a TDG comprising of 10k flows at very high accuracies of over 96%.

Khan, F; Gokhale, M; Chuah, C N

2010-03-26T23:59:59.000Z

248

Size-based Scheduling with Differentiated Services to Improve Response Time of Highly Varying Flow Sizes  

E-Print Network (OSTI)

The sizes of Internet objects are known to be highly varying. We evaluate an M/G/1 queue under foreground background N (FBN ) scheduling policy for job size distributions with varying coefficient of variability (CoV) to analyze the impact of variability of job sizes to the performance of the policy. We find that FBN is very efficient in reducing the response time and minimizing the number of jobs that are penalized (i.e., have a higher response time under FBN than under processor sharing (PS)) when job sizes have a high CoV. We also propose and analyze variants of FBN called fixed priority FBN (FP \\Gamma FBN ) and differential FBN (DF \\Gamma FBN ), which introduce service differentiation by classifying jobs into high priority and low priority and then servicing the high priority before low priority jobs in an FBN related order. The numerical analysis conducted for highly varying job sizes reveals that FP \\Gamma FBN achieves a perfect service differentiation at the expense of a high penalty for the low priority small jobs. While DF \\Gamma FBN offers acceptable service differentiation, it does not penalize small jobs with low priority at all. Moreover, FP \\Gamma FBN and DF \\Gamma FBN can guarantee the service of high priority jobs even under overload.

Idris A. Rai; Guillaume Urvoy-keller; Ernst W. Biersack

2002-01-01T23:59:59.000Z

249

Yucca Mountain Licensing Standard Options for Very Long Time Frames: Technical Bases for the Standard and Compliance Assessments  

Science Conference Proceedings (OSTI)

In the existing U.S. Environmental Protection Agency (EPA) and Nuclear Regulatory Commission (NRC) regulations governing the spent nuclear fuel and high-level radioactive waste site at Yucca Mountain, Nevada, the time period of compliance was set at 10,000 years. Recently, a Court ordered that EPA and NRC either revise the regulation on this topic to be "based upon and consistent with" recommendations made by a panel of the National Academy of Sciences, who recommended a time period of compliance out to ...

2005-04-11T23:59:59.000Z

250

Vacuum-Based Time-Resolved Photoluminescence Measurement System Provides New Capability (Fact Sheet)  

DOE Green Energy (OSTI)

New measurement capability measures semiconductor minority-carrier lifetimes in conditions that simulate thin-film photovoltaic manufacturing environments. National Renewable Energy Laboratory (NREL) scientists have developed a new capability for measuring time-resolved photoluminescence (TRPL) in controlled environments, including under high vacuum and at elevated temperatures. This system enables the simulation of conditions in a thin-film photovoltaic (PV) manufacturing line. NREL's work in recent years has demonstrated a clear correlation between minority-carrier lifetime and thin-film PV device performance. Hence, the thin-film PV industry-both CIGS and CdTe-has a high level of interest for in-line metrology using NREL's TRPL system. The system, shown below, couples femtosecond laser pulses with optical fibers while avoiding spectral or temporal broadening over a wide range of wavelengths. The optics are designed to collect and couple the TRPL signal into the same fiber used to deliver the laser pulses. The capability is coupled into a high-vacuum chamber that can heat samples to 500 C or higher and expose them to reactive ambients. This tool will allow NREL to partner with industry to evaluate TRPL as a diagnostic at multiple stages of the manufacturing process and determine correlations to final module efficiency. The TRPL system has the potential to significantly improve manufacturing yield and throughput of current thin-film PV manufacturers. NREL developed a time-resolved photoluminescence (TRPL) system that can operate under high vacuum and at high temperatures. Thin-film PV performance can be better assessed because of its clear correlation with minority-carrier lifetime, which can be measured by NREL's TRPL system. Photovoltaic thin-film makers will be able to measure in-line TRPL at various stages of the manufacturing process, potentially leading to improved yield and throughput.

Not Available

2011-11-01T23:59:59.000Z

251

Dynamics of heart rate  

Science Conference Proceedings (OSTI)

Heart rate oscillates on several different time scales and has long?term variability in the form of 1/fnoise. The physiological control of heart rate is briefly reviewed

Daniel T. Kaplan; Mario Talajic

1991-01-01T23:59:59.000Z

252

A Comprehensive Statistically-Based Method to Interpret Real-Time Flowing Measurements  

DOE Green Energy (OSTI)

With the recent development of temperature measurement systems, continuous temperature profiles can be obtained with high precision. Small temperature changes can be detected by modern temperature measuring instruments such as fiber optic distributed temperature sensor (DTS) in intelligent completions and will potentially aid the diagnosis of downhole flow conditions. In vertical wells, since elevational geothermal changes make the wellbore temperature sensitive to the amount and the type of fluids produced, temperature logs can be used successfully to diagnose the downhole flow conditions. However, geothermal temperature changes along the wellbore being small for horizontal wells, interpretations of a temperature log become difficult. The primary temperature differences for each phase (oil, water, and gas) are caused by frictional effects. Therefore, in developing a thermal model for horizontal wellbore, subtle temperature changes must be accounted for. In this project, we have rigorously derived governing equations for a producing horizontal wellbore and developed a prediction model of the temperature and pressure by coupling the wellbore and reservoir equations. Also, we applied Ramey's model (1962) to the build section and used an energy balance to infer the temperature profile at the junction. The multilateral wellbore temperature model was applied to a wide range of cases at varying fluid thermal properties, absolute values of temperature and pressure, geothermal gradients, flow rates from each lateral, and the trajectories of each build section. With the prediction models developed, we present inversion studies of synthetic and field examples. These results are essential to identify water or gas entry, to guide flow control devices in intelligent completions, and to decide if reservoir stimulation is needed in particular horizontal sections. This study will complete and validate these inversion studies.

Keita Yoshioka; Pinan Dawkrajai; Analis A. Romero; Ding Zhu; A. D. Hill; Larry W. Lake

2007-01-15T23:59:59.000Z

253

A GEM-based Time Projection Chamber for the AMADEUS experiment  

E-Print Network (OSTI)

In this paper we present the R&D activity on a new GEM-based TPC prototype for AMADEUS, a new experimental proposal at the DA{\\Phi}NE {\\Phi}-factory at the Laboratori Nazionali di Frascati (INFN), aiming to perform measurements of the low-energy negative kaons interactions in nuclei. Such innovative detector will equip the inner part of the experiment in order to perfom a better reconstruction of the primary vertex and the secondary particles tracking. A 10x10 cm2 prototype with a drift gap up to 15 cm was realized and succesfully tested at the {\\pi} M1 beam facility of the Paul Scherrer Institut (PSI) with low momentum hadrons. The measurements of the detector efficiency and spatial resolution have been performed. The results as a function of the gas gain, drift field, front-end electronic threshold and particle momentum are reported and discussed.

M. Poli Lener; M. Bazzi; G. Corradi; C. Curceanu; A. D'Uffizi; C. Paglia; E. Sbardella; A. Scordo; D. Tagnani; A. Romero Vidal; J. Zmeskal

2013-04-23T23:59:59.000Z

254

Robustness of Ethernet-Based Real-Time Networked Control System with Multi-Level Client/Server Architecture  

E-Print Network (OSTI)

The importance of real-time communication at the device level in a factory automation setup is a widely researched area. This research is an effort to experimentally verify if Ethernet can be used as a real-time communication standard in a factory automation setup, by observing the effects of packet delays, packet loss, and network congestion on the performance of a networked control system (NCS). The NCS experimental setup used in this research involves real-time feedback control of multiple plants like DC motors and a magnetic-levitation system connected to one or more controllers. A multi-client-multi-server architecture on a local area network (LAN) was developed using user datagram protocol (UDP) as the communication protocol. Key observations are as follows. (1) The multi-client-single-server system showed the highest packet delays compared to single-client-single-server architecture. (2) In the singleclient- single-server system, as the Ethernet link utilization increased beyond 82 percent, the average packet delays and steady-state error of the DC motor speed-control system increased by 2231 percent and 304 percent, respectively. (3) Even under high link utilization, adding an additional server to the NCS reduced average packet delays considerably. (4) With large packet sizes, higher packet rates were automatically throttled by Ethernet’s flow control mechanism affecting the real-time communication negatively. (5) In the multiclient- multi-server architecture, average packet delays at higher packet rates, and at higher packet lengths were found to be 40 percent lesser than the those of the single-clientsingle- server system and 87.5 percent lesser than those of the multi-client-single-server system.

Bibinagar, Naveen Kumar

2010-08-01T23:59:59.000Z

255

Group-based Query Learning for rapid diagnosis in time-critical situations  

E-Print Network (OSTI)

In query learning, the goal is to identify an unknown object while minimizing the number of "yes or no" questions (queries) posed about that object. We consider three extensions of this fundamental problem that are motivated by practical considerations in real-world, time-critical identification tasks such as emergency response. First, we consider the problem where the objects are partitioned into groups, and the goal is to identify only the group to which the object belongs. Second, we address the situation where the queries are partitioned into groups, and an algorithm may suggest a group of queries to a human user, who then selects the actual query. Third, we consider the problem of query learning in the presence of persistent query noise, and relate it to group identification. To address these problems we show that a standard algorithm for query learning, known as the splitting algorithm or generalized binary search, may be viewed as a generalization of Shannon-Fano coding. We then extend this result to t...

Bellala, Gowtham; Scott, Clayton

2009-01-01T23:59:59.000Z

256

A Real-time Integration of Concept-based Search and Summarization on Chinese Websites  

E-Print Network (OSTI)

This paper introduces an intuitive search environment for casual and novice Chinese users over Internet. The system consists of four components, a concept network, a query reformulation model, a standard search engine, and an automatic summarizer. When the user enters one or more fairly general and vague terms, the search engine returns an initial answer set, and at the same time pipes the query to the concept network that connects thousands of conceptual nodes, each referring to a specific concept for a given domain and pointing to a number of associated conceptual terms. If the concept is located in the network, the related conceptual terms are displayed. The user has the option of using one or more of these specific terms to reformulate the next round of searches. Such search iterations continue until the user' s ultimate information seeking goal is reached. For each search iteration, auto summarizer presents the main theme of the document retrieved and an optional text-to-speech engine can read out the output summary if the user prefers.

Joe F Zhou; Weiquan Liu

2000-01-01T23:59:59.000Z

257

PC-Cluster-Based Real-Time Simulation of an 8 synchronous machines network with HVDC link using  

E-Print Network (OSTI)

Abstract—In this paper, we detail the real-time simulation results of a medium-sized network composed of 8 synchronous machines and an HVDC link. The model is composed of two Kundur-like 4 machines networks connected together with a 12pulse HVDC link. The complete network is modeled with SimPowerSystems with ARTEMIS real-time plug-in and is simulated in real-time on a RT-LAB InfiniBand PC-cluster composed of 3 dual-CPU dual-core Opteron PCs. The network model includes the HVDC control and protection systems as well as the synchronous machine regulators and power stabilizers. It also includes typical fault simulation capability like HVDC DC faults, thyristor misfires and AC faults. This model is excellent to study the complex interactions between an HVDC link and AC network under normal and transient conditions. The real-time simulation is controlled and monitored with a TestDrive interface from Opal-RT. This interface, based on LabView, permits easy monitoring and control of the complete system and enables Python-based scripting for automated tests. The proposed simulator can be interfaced with external equipments and controllers by direct reconfiguration of a FPGA I/O card with Xilinx System Generator blockset.

Christian Dufour; Jean-nicolas Paquin; Vincent Lapointe; Jean Bélanger; Loic Schoen

2007-01-01T23:59:59.000Z

258

Materials Reliability Program: Effects of B/Li/pH on PWSCC Growth Rates in Ni-Base Alloys (MRP-217)  

Science Conference Proceedings (OSTI)

EPRI's Materials Reliability Program (MRP) is investigating the effects of coolant chemistry on stress corrosion crack (SCC) growth rates of nickel-base alloys in pressurized water reactor (PWR) primary water as a possible strategy to mitigate damage experienced in operating plants with components made of Alloy 600 and its weld metals. Mitigating primary water stress corrosion cracking (PWSCC) by changes in water chemistry (for example, optimizing dissolved hydrogen levels and/or adding zinc) is attracti...

2007-08-20T23:59:59.000Z

259

A web-based approach to image-based lighting using high dynamic range images and QuickTime object virtual reality  

E-Print Network (OSTI)

This thesis presents a web-based approach to lighting three-dimensional geometry in a virtual scene. The use of High Dynamic Range (HDR) images for the lighting model makes it possible to convey a greater sense of photorealism than can be provided with a conventional computer generated three-point lighting setup. The use of QuickTime ™ Object Virtual Reality to display the three-dimensional geometry offers a sophisticated user experience and a convenient method for viewing virtual objects over the web. With this work, I generate original High Dynamic Range images for the purpose of image-based lighting and use the QuickTime ™ Object Virtual Reality framework to creatively alter the paradigm of object VR for use in object lighting. The result is two scenarios: one that allows for the virtual manipulation of an object within a lit scene, and another with the virtual manipulation of light around a static object. Future work might include the animation of High Dynamic Range image-based lighting, with emphasis on such features as depth of field and glare generation.

Cuellar, Tamara Melissa

2008-05-01T23:59:59.000Z

260

Rate Schedules  

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

One of the major responsibilities of Southeastern is to design, formulate, and justify rate schedules. Repayment studies prepared by the agency determine revenue requirements and appropriate rate...

Note: This page contains sample records for the topic "time based rate" 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

Finite-key analysis of high-dimensional time-energy entanglement-based quantum key distribution  

E-Print Network (OSTI)

We present a security analysis against collective attacks for the recently proposed time-energy entanglement-based quantum key distribution protocol, given the practical constraints of single photon detector efficiency, channel loss, and finite-key considerations. We find a positive secure-key capacity when the key length increases beyond $10^4$ for eight-dimensional systems. The minimum key length required is reduced by the ability to post-select on coincident single-photon detection events. Including finite-key effects, we show the ability to establish a shared secret key over a 200 km fiber link.

Catherine Lee; Jacob Mower; Zheshen Zhang; Jeffrey H. Shapiro; Dirk Englund

2013-11-05T23:59:59.000Z

262

Rates - WAPA-137 Rate Order  

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

WAPA-137 Rate Order WAPA-137 Rate Order 2009 CRSP Management Center Customer Rates Second Step Presentation from the June 25, 2009, Customer Meeting Handout Materials from the June 25, 2009, Customer Meeting Customer Comment Letters ATEA CREDA Farmington ITCA AMPUA Rate Adjustment Information The second step of WAPA-137 SLCA/IP Firm Power, CRSP Transmission and Ancillary Services rate adjustment. FERC Approval of Rate Order No. WAPA-137 Notice Of Filing for Rate Order No. WAPA-137 Published Final FRN for Rate Order No. WAPA-137 Letter to Customers regarding the published Notice of Extension of Public Process for Rate Order No. WAPA-137 Published Extension of Public Process for Rate Order No. WAPA-137 FRN Follow-up Public Information and Comment Forum Flier WAPA-137 Customer Meetings and Rate Adjustment Schedule

263

A real-time respiration position based passive breath gating equipment for gated radiotherapy: A preclinical evaluation  

Science Conference Proceedings (OSTI)

Purpose: To develop a passive gating system incorporating with the real-time position management (RPM) system for the gated radiotherapy. Methods: Passive breath gating (PBG) equipment, which consists of a breath-hold valve, a controller mechanism, a mouthpiece kit, and a supporting frame, was designed. A commercial real-time positioning management system was implemented to synchronize the target motion and radiation delivery on a linear accelerator with the patient's breathing cycle. The respiratory related target motion was investigated by using the RPM system for correlating the external markers with the internal target motion while using PBG for passively blocking patient's breathing. Six patients were enrolled in the preclinical feasibility and efficiency study of the PBG system. Results: PBG equipment was designed and fabricated. The PBG can be manually triggered or released to block or unblock patient's breathing. A clinical workflow was outlined to integrate the PBG with the RPM system. After implementing the RPM based PBG system, the breath-hold period can be prolonged to 15-25 s and the treatment delivery efficiency for each field can be improved by 200%-400%. The results from the six patients showed that the diaphragm motion caused by respiration was reduced to less than 3 mm and the position of the diaphragm was reproducible for difference gating periods. Conclusions: A RPM based PBG system was developed and implemented. With the new gating system, the patient's breath-hold time can be extended and a significant improvement in the treatment delivery efficiency can also be achieved.

Hu Weigang; Xu Anjie; Li Guichao; Zhang Zhen; Housley, Dave; Ye Jinsong [Department of Radiation Oncology, Fudan University Shanghai Cancer Center and Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032 (China); Department of Radiation Oncology, Swedish Cancer Institute, Seattle, Washington 98104 (United States)

2012-03-15T23:59:59.000Z

264

Insertion Rates  

Science Conference Proceedings (OSTI)

HOME > Insertion Rates. TECH HEADLINES. Research Explores a New Layer in Additive Manufacturin... Grand Opening Slated for Electron Microscopy Facility.

265

Comparative Studies on C-coated and Uncoated LiFePO4 Cycling at Various Rates and Temperatures using Synchrotron Based in situ X-ray Diffraction  

DOE Green Energy (OSTI)

The structural changes of LiFePO{sub 4} and C-coated LiFePO{sub 4} during charging at various C-rates and temperatures are investigated using synchrotron based in situ X-ray diffraction technique. The XRD patterns collected during cycling show the structural evidence of the positive effects of carbon coating on LiFePO{sub 4} for the electrochemical performance improvements at different temperatures, especially at low temperatures. At -10 C, the C-coated LiFePO{sub 4} shows comparable capacities with the sample cycled at room temperature when cycled at C/5 rate with a slight shift of the plateau to a higher voltage during charging. The in situ XRD patterns collected simultaneously show a complete phase transformation from triphylite to heterosite. At -20 C, the C-coated LiFePO{sub 4} delivers 55.6% of its theoretical capacities at C/5 rate. However, the plateau in the charging curve becomes sloppy and shifts to a higher voltage. The in situ XRD patterns show that the phase transformation from triphylite to heterosite is not completed when charged to 4.5 V due to the larger polarization when charged at -20 C.

H Shin; K Nam; W Chang; B Cho; W Yoon; X Yang; K Chung

2011-12-31T23:59:59.000Z

266

CERTS 2012 Program Review - Real-Time Wide-Area Montoring Tool Based on CELL Method - Yuri Makarov, PNNL  

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

DOE/CERTS Internal Program Review DOE/CERTS Internal Program Review Real-Time Wide-Area Monitoring Tool Based on Characteristic Ellipsoid Method (CELL) Yuri Makarov Pacific Northwest National Laboratory (E-mail: yuri.makarov@pnnl.gov) June 12-13, 2012 Washington DC 2 Acknowledgements Phil N. Overholt, DOE Jeff E. Dagle, PNNL, CERTS PM Joe H. Eto, LBNL, CERTS PM Jian Ma, Burns & McDonnell, Former Project Lead 3 Project Objectives and Quick Overview  Objective:  Develop a relatively simple, easy-to-implement and easy-to-use tool to monitor, predict and control the dynamic behavior of power systems for wide-area situational awareness, prediction and decision making support for operators  Specific Objectives:  Monitor dynamic behaviors of power systems

267

Rate schedule  

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

Firm Power Service Provided by Rate/Charges Firm Power Service Provided by Rate/Charges Rate/Charges Effective Through (or until superceded) Firm Sales (SLIP-F9) Composite Rate SLIP 29.62 mills/kWh 9/30/2015 Demand Charge SLIP $5.18/kW-month 9/30/2015 Energy Charge SLIP 12.19 mills/kWh 9/30/2015 Cost Recovery Charge (CRC) SLIP 0 mills/kWh 9/30/2015 Transmission Service Provided by Current Rates effective10/12 - 9/15 (or until superceded) Rate Schedule Effective Through Firm Point-to-Point Transmission (SP-PTP7) CRSP $1.14 per kW-month $13.69/kW-year $0.00156/kW-hour $0.04/kW-day $0.26/kW-week 10/1/2008-9/30/2015 Network Integration Transmission (SP-NW3) CRSP see rate schedule 10/1/2008-9/30/2015 Non-Firm Point-to-Point Transmission (SP-NFT6) CRSP see rate schedule 10/1/2008-9/30/2015 Ancillary Services Provided by Rate Rate Schedule

268

Growth Kinetics of Lipid-Based Nanodiscs to Unilamellar Vesicles: A Time-Resolved Small Angle Neutron Scattering (SANS) Study  

Science Conference Proceedings (OSTI)

Mixtures of dimyristoyl-phosphatidylcholine (DMPC), dimyristoyl-phosphatidylglycerol (DMPG) and dihexanoylphosphatidylcholine (DHPC) in aqueous solutions spontaneously form monodisperse, bilayered nanodiscs (also known as bicelles ) at or below the melting transition temperature of DMPC (TM ~23 C). In dilute systems above the main transition temperature TM of DMPC, bicelles coalesce (increasing their diameter) and eventually self-fold into unilamellar vesicles (ULVs). Time resolved small angle neutron scattering was used to study the growth kinetics of nanodiscs below and equal to TM over a period of hours as a function of temperature at two lipid concentrations in presence or absence of NaCl salt. Bicelles seem to undergo a sudden initial growth phase with increased temperature, which is then followed by a slower reaction-limited growth phase that depends on ionic strength, lipid concentration and temperature. The bicelle interaction energy was derived from the colloidal theory of Derjaguin and Landau, and Verwey and Overbeek (DLVO). While the calculated total energy between discs is attractive and proportional to their growth rate, a more detailed mechanism is proposed to describe the mechanism of disc coalescence. After annealing at low temperature (low-T), samples were heated to 50 C in order to promote the formation of ULVs. Although the low-T annealing of samples has only a marginal effect on the mean size of end-state ULVs, it does affect their polydispersity, which increases with increased T, presumably driven by the entropy of the system.

Mahabir, Suanne [University of Western Ontario, The; Small, Darcy [University of Western Ontario, The; Li, Ming [University of Connecticut, Storrs; Wan, Wankei [University of Western Ontario, The; Kucerka, Norbert [Canadian Neutron Beam Centre and Comelius University (Slovakia); Littrell, Ken [ORNL; Katsaras, John [ORNL; Nieh, Mu-Ping [University of Connecticut, Storrs

2013-01-01T23:59:59.000Z

269

Long-range time-of-flight scanning sensor based on high-speed time-correlated single-photon counting  

E-Print Network (OSTI)

are acquired using a scanning optical system and an individual single-photon detector. Depth images have been-and-tilt head mechanism to scan a compact optical system containing an opti- mized silicon single identification under daylight conditions [12]. Time-of-flight imaging systems using arrays of sin- gle

Buller, Gerald S.

270

IMPLEMENTING REAL TIME RATINGS FOR PATH 15  

E-Print Network (OSTI)

PG&E's standard SCADA protocol, to the Fresno area SCADA (Supervisory Control And Data Acquisition at Gates substation and further, via PG&E's standard SCADA protocol, to the Fresno area SCADA system

271

Investigation of determinism in heart rate variability  

Science Conference Proceedings (OSTI)

The article searches for the possible presence of determinism in heart rate variability (HRV) signals by using a new approach based on NARMA (nonlinear autoregressive moving average) modeling and free-run prediction. Thirty-three 256-point HRV time series obtained from Wistar rats submitted to different autonomic blockade protocols are considered

M. E. D. Gomes; A. V. P. Souza; H. N. Guimarães; L. A. Aguirre

2000-01-01T23:59:59.000Z

272

Near-Real-Time Measurement of Sea-Salt Aerosol during the SEAS Campaign: Comparison of Emission-Based Sodium Detection with an Aerosol Volatility Technique  

Science Conference Proceedings (OSTI)

The first deployment of an emission-based aerosol sodium detector (ASD), designed to chemically characterize marine aerosols on a near-real-time basis, is reported. Deployment occurred as part of the Shoreline Environment Aerosol Study (SEAS) ...

P. Campuzano-Jost; C. D. Clark; H. Maring; D. S. Covert; S. Howell; V. Kapustin; K. A. Clarke; E. S. Saltzman; A. J. Hynes

2003-10-01T23:59:59.000Z

273

Historical Interest Rates  

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

Current and Historical Interest Rates Current and Historical Interest Rates The table lists interest rates, from the project's inception through the present, for all projects with repayment supervised by the CRSP MC. The latest available interest rate is used for all future interest rate calculations. The Amistad-Falcon, Collbran, Provo River, and Rio Grande Projects are all assigned the average daily "Yield Rate" calculated by the U.S. Treasury, on an annual basis, for Treasury bonds having terms of 15 years or more remaining to maturity. The calculated yield rate is rounded to the nearest one-eighth of one percent. The yield rate is based upon the bond's interest rate, as well as its market value. The Colorado River Storage Project and its participating projects, Dolores and Seedskadee, are assigned the average daily "Coupon Rate," annualized for the same U.S. Treasury bonds used in "Yield Rate" calculations. The coupon rate is the interest rate that the bond carries upon its face.

274

Definition: Dynamic Capability Rating | Open Energy Information  

Open Energy Info (EERE)

Capability Rating Capability Rating Jump to: navigation, search Dictionary.png Dynamic Capability Rating Dynamic capability rating can be achieved through real-time determination of an element's (e.g., line, transformer etc.) ability to carry load based on electrical and environmental conditions.[1] Related Terms rating References ↑ SmartGrid.gov 'Description of Functions' An LikeLike UnlikeLike You like this.Sign Up to see what your friends like. inline Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Dynamic_Capability_Rating&oldid=506158" Categories: Definitions ISGAN Definitions What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load)

275

Effective Rate Period  

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

Fiscal Year 2014 Fiscal Year 2014 Effective Rate Period As of Beginning of the FY 10/01/2013 - 09/30/2014 Mid-Year Changes (if applicable) 10/01/2013 - 09/30/2014 Power Rates Annual Revenue Requirement Rate Schedule Power Revenue Requirement $73,441,557 CV-F13 Base Resource Revenue Requirement $69,585,875 First Preference Revenue Requirement $3,855,682

276

Rates and Repayment Services  

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

Tariff Rates FY 2014 Rates and Rate Schedules FY 2013 Rates and Rate Schedules FY 2012 Rates and Rate Schedules FY 2011 Rates and Rate Schedules FY 2010 Rates and Rate Schedules FY...

277

Summary of Time Period-Based and Other Approximation Methods for Determining the Capacity Value of Wind and Solar in the United States: September 2010 - February 2012  

DOE Green Energy (OSTI)

This paper updates previous work that describes time period-based and other approximation methods for estimating the capacity value of wind power and extends it to include solar power. The paper summarizes various methods presented in utility integrated resource plans, regional transmission organization methodologies, regional stakeholder initiatives, regulatory proceedings, and academic and industry studies. Time period-based approximation methods typically measure the contribution of a wind or solar plant at the time of system peak - sometimes over a period of months or the average of multiple years.

Rogers, J.; Porter, K.

2012-03-01T23:59:59.000Z

278

A novel HMM-based clustering algorithm for the analysis of gene expression time-course data  

Science Conference Proceedings (OSTI)

A novel hidden Markov model (HMM) and clustering algorithm for the analysis of gene expression time-course data is proposed. The proposed model, called the profile-HMM, is specifically designed to explicitly take into account the dynamic nature of temporal ... Keywords: Clustering, Gene expression time-course data, Hidden Markov models, Temporal dependences, Time-series analysis

Yujing Zeng; Javier Garcia-Frias

2006-05-01T23:59:59.000Z

279

Design and Control of a Compact 6-Degree-of-Freedom Precision Positioner with Linux- Based Real-Time Control  

E-Print Network (OSTI)

This dissertation presents the design, control, and implementation of a compact highprecision multidimensional positioner. This precision-positioning system consists of a novel concentrated-field magnet matrix and a triangular single-moving part that carries three 3-phase permanent-magnet planar-levitation-motor armatures. Since only a single levitated moving part, namely the platen, generates all required fine and coarse motions, this positioning system is reliable and potentially cost-effective. The three planar levitation motors based on the Lorentz-force law not only produce the vertical force to levitate the triangular platen but also control the platen's position and orientation in the horizontal plane. Three laser distance sensors are used to measure vertical, x-, and yrotation motions. Three 2-axis Hall-effect sensors are used to determine lateral motions and rotation motion about the z-axis by measuring the magnetic flux density generated by the magnet matrix. This positioning system has a total mass of 1.52 kg, which is the minimized mass to produce better dynamic performance. In order to reduce the mass of the moving platen, it is made of Delrin with a mass density of 1.54 g/cm3 by Computer Numerical Controlled (CNC) machining. The platen can be regarded a pure mass, and the spring and damping effects are neglected except for the vertical dynamic. Single-input single-output (SISO) digital lead-lag controllers and a multivariable Linear Quadratic Gaussian (LQG) controller were designed and implemented. Real-time control was performed with the Linux-Ubuntu operating system OS. Real Time Application Interface (RTAI) for Linux works with Comedi and Comedi libraries and enables closed-loop real-time control. One of the key advantages of this positioning stage with Hall-effect sensors is the extended travel range and rotation angle in the horizontal mode. The maximum travel ranges of 220 mm in x and 200 mm in y were achieved experimentally. Since the magnet matrix generates periodical sinusoidal flux densities in the x-y plane, the travel range can be extended by increasing the number of magnet pitches. The rotation angle of 12 degrees was achieved in rotation around z. The angular velocities of 0.2094 rad/s and 4.74 rad/s were produced by a 200-mm-diameter circular motion and a 30-mm-diameter spiral motion, respectively. The maximum velocity of 16.25 mm/s was acquired from over one pitch motion. The maximum velocity of 17.5 mm/s in a 8-mm scanning motion was achieved with the acceleration of 72.4 m/s2. Step responses demonstrated a 10-um resolution and 6-um rms position noise in the translational mode. For the vertical mode, step responses of 5 um in z, 0.001 degrees in roation around x, and 0.001 degrees in rotation around y were achieved. This compact single-moving-part positioner has potential applications for precisionpositioning systems in semiconductor- manufacturing.

Yu, Ho

2009-08-01T23:59:59.000Z

280

The impact of next and back buttons on time to complete and measurement reliability in computer-based surveys  

E-Print Network (OSTI)

Research Methods, Instruments, & Computers, 29, 274–279. 3.and measurement reliability in computer-based surveys Ron D.measurement reliability of computer-based surveys. Methods A

Hays, Ron D.; Bode, Rita; Rothrock, Nan; Riley, William; Cella, David; Gershon, Richard

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

Category Rating  

Science Conference Proceedings (OSTI)

... Gold category: highly proficient with an overall comprehensive level of knowledge; skills, and abilities of the job based on a complete review of ...

2010-10-05T23:59:59.000Z

282

A Comprehensive Analysis of Cardiac Dose in Balloon-Based High-Dose-Rate Brachytherapy for Left-Sided Breast Cancer  

SciTech Connect

Purpose: To investigate radiation dose to the heart in 60 patients with left-sided breast cancer who were treated with balloon-based high-dose-rate brachytherapy using MammoSite or Contura applicators. Methods and Materials: We studied 60 consecutive women with breast cancer who were treated with 34 Gy in 10 twice-daily fractions using MammoSite (n = 37) or Contura (n = 23) applicators. The whole heart and the left and right ventricles were retrospectively delineated, and dose-volume histograms were analyzed. Multiple dosimetrics were reported, such as mean dose (D{sub mean}); relative volume receiving 1.7, 5, 10, and 20 Gy (V1.7, V5, V10, and V20, respectively); dose to 1 cc (D{sub 1cc}); and maximum point dose (D{sub max}). Biologic metrics, biologically effective dose and generalized equivalent uniform dose were computed. The impact of lumpectomy cavity location on cardiac dose was investigated. Results: The average {+-} standard deviation of D{sub mean} was 2.45 {+-} 0.94 Gy (range, 0.56-4.68) and 3.29 {+-} 1.28 Gy (range, 0.77-6.35) for the heart and the ventricles, respectively. The average whole heart V5 and V10 values were 10.2% and 1.3%, respectively, and the heart D{sub max} was >20 Gy in 7 of 60 (11.7%) patients and >25 Gy in 3 of 60 (5%) patients. No cardiac tissue received {>=}30 Gy. The V1.7, V5, V10, V20, and D{sub mean} values were all higher for the ventricles than for the whole heart. For balloons located in the upper inner quadrant of the breast, the average whole heart D{sub mean} was highest. The D{sub mean}, biologically effective dose, and generalized equivalent uniform dose values for heart and ventricles decreased with increasing minimal distance from the surface of the balloon. Conclusions: On the basis of these comprehensive cardiac dosimetric data, we recommend that cardiac dose be routinely reported and kept as low as possible in balloon-based high-dose-rate brachytherapy treatment planning for patients with left-sided breast cancer so the correlation with future cardiac toxicity data can be investigated.

Valakh, Vladimir, E-mail: vladimir@valakh.com [Department of Radiation Oncology, Allegheny General Hospital, Pittsburgh, PA (United States); Kim, Yongbok; Werts, E. Day; Trombetta, Mark G. [Department of Radiation Oncology, Allegheny General Hospital, Pittsburgh, PA (United States); Drexel University College of Medicine, Allegheny Campus, Pittsburgh, PA (United States)

2012-04-01T23:59:59.000Z

283

Rate Analysis of Two Photovoltaic Systems in San Diego  

DOE Green Energy (OSTI)

Analysts have found increasing evidence that rate structure has impacts on the economics of solar systems. This paper uses 2007 15-minute interval photovoltaic (PV) system and load data from two San Diego City water treatment facilities to illustrate impacts of different rate designs. The comparison is based on rates available in San Diego at the time of data collection and include proportionately small to large demand charges (relative to volumetric consumption), and varying on- and off- peak times. Findings are twofold for these large commercial systems: 1) transferring costs into demand charges does not result in savings and 2) changes in peak times do not result in a major cost difference during the course of a year. While lessons learned and discussion on rate components are based on the findings, the applicability is limited to buildings with similar systems, environments, rate options, and loads.

Doris, E.; Ong, S.; Van Geet, O.

2009-07-01T23:59:59.000Z

284

About the Ratings  

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

2008 Ratings Changes 2008 Ratings Changes EPA's "New" Fuel Economy Ratings Video about EPA's New Fuel Economy Ratings Windows Media Video (6.8 MB) Quicktime Video (7.8 MB) Text Version EPA changed the way it estimates fuel economy starting with the 2008 model year. This "new" way of estimating fuel economy supplements the previous method by incorporating the effects of Faster speeds and acceleration Air conditioner use Colder outside temperatures What else do I need to know about the "new" ratings? The tests lower MPG estimates for most vehicles. View old/new MPG ratings for a specific vehicle The actual mileage you get will still vary based on your driving habits, traffic conditions, and other factors. All MPG estimates in Find-a-Car have been converted to the new

285

Fischer Tropsch synthesis : influence of Mn on the carburization rates and activities of Fe-based catalysts by TPR-EXAFS/XANES and catalyst testing.  

Science Conference Proceedings (OSTI)

Fe-based catalysts containing different amounts of Mn were tested for Fischer-Tropsch synthesis using a stirred tank reactor at 270 C, 1.21 MPa, and H{sub 2}:CO = 0.7. Catalyst activation by carburization with 10% CO/He was followed by Temperature Programmed Reduction/X-ray Absorption Spectroscopy (TPR-EXAFS/XANES) from room temperature to 300 C. {gamma}-Fe{sub 2}O{sub 3} was converted into iron carbides, whereas MnO{sub x} was reduced to oxygen deficient MnO. Mn hindered Fe carburization, such that the carburized catalyst displayed higher Fe{sub 3}O{sub 4} content than the catalyst without Mn. EXAFS fitting indicates that the carburized catalyst contained a mixture of Hgg carbide, Fe{sub 3}O{sub 4}, and Mn oxides. Increasing Mn content led to higher CH{sub 4} and light product selectivities, and lower light olefin selectivities. Higher and stable conversions were obtained with a catalyst containing an almost equimolar Fe/Mn ratio relative to the catalyst without Mn. Selectivity trends are attributed to the higher WGS rates observed on the FeMn catalysts, consistent with the structural differences observed.

Ribeiro, M. C.; Jacobs, G.; Pendyala, R.; Davis, B. H.; Cronauer, D. C.; Kropf, A. J.; Marshall, C. L. (Chemical Sciences and Engineering Division); (Univ. of Kentucky)

2011-03-24T23:59:59.000Z

286

A novel statistical time-series pattern based interval forecasting strategy for activity durations in workflow systems  

Science Conference Proceedings (OSTI)

Forecasting workflow activity durations is of great importance to support satisfactory QoS in workflow systems. Traditionally, a workflow system is often designed to facilitate the process automation in a specific application domain where activities ... Keywords: Activity duration, Interval forecasting, Statistical time series, Time-series patterns, Workflow system

Xiao Liu; Zhiwei Ni; Dong Yuan; Yuanchun Jiang; Zhangjun Wu; Jinjun Chen; Yun Yang

2011-03-01T23:59:59.000Z

287

High Redshift Supernova Rates  

E-Print Network (OSTI)

We use a sample of 42 supernovae detected with the Advanced Camera for Surveys on-board the Hubble Space Telescope as part of the Great Observatories Origins Deep Survey to measure the rate of core collapse supernovae to z~0.7 and type Ia supernovae to z~1.6. This significantly increases the redshift range where supernova rates have been estimated from observations. The rate of core collapse supernovae can be used as an independent probe of the cosmic star formation rate. Based on the observations of 17 core collapse supernovae, we measure an increase in the core collapse supernova rate by a factor of 1.6 in the range 0.3rate. The increase in the rate in this redshift range in consistent with recent measurements of the star formation rate derived from UV-luminosity densities and IR datasets. Based on 25 type Ia supernovae, we find a SN Ia rate that is a factor 3-5 higher at z~1 compared to earlier estimates at lower redshifts (zrate traces a higher star formation rate at redshifts z>1 compared to low redshift. At higher redshift (z>1), we find a suggested decrease in the type Ia rate with redshift. This evolution of the Ia rate with redshift is consistent with a type Ia progenitor model where there is a substantial delay between the formation of the progenitor star and the explosion of the supernova. Assuming that the type Ia progenitor stars have initial main sequence masses 3-8 M_Sun, we find that 5-7% of the available progenitors explode as type Ia supernovae.

Tomas Dahlen; Louis-Gregory Strolger; Adam G. Riess; Bahram Mobasher; Ranga-Ram Chary; Christopher J. Conselice; Henry C. Ferguson; Andrew S. Fruchter; Mauro Giavalisco; Mario Livio; Piero Madau; Nino Panagia; John L. Tonry

2004-06-24T23:59:59.000Z

288

Probabilistic Rating and Equipment Temperature Tracking During Emergency Load Events  

Science Conference Proceedings (OSTI)

This report concerns a possible extension of the Electric Power Research Institute's (EPRI's) Dynamic Thermal Circuit Rating (DTCR) and Increased Power Flow (IPF) technologies. In most applications of dynamic rating and real-time monitoring to date, the purpose is to enhance the use of existing power equipment by calculating power flow limits based on real-time weather and load data, rather than using worst-case” assumptions. The goal of these enhancements has been to allow additional economic transfers ...

2008-02-25T23:59:59.000Z

289

Heat Rate Program Guidelines  

Science Conference Proceedings (OSTI)

Power plant facilities with performance or heat rate improvement programs perform better than those that do not have those programs. A heat rate improvement program typically provides sufficient information for decision making with respect to timely maintenance actions and/or operational adjustments. Monitoring the performance of any power plant component includes the trending of parameters that also describe the performance of other plant components, providing insight and information on improving ...

2012-12-31T23:59:59.000Z

290

Possibility of Skill Forecast Based on the Finite-Time Dominant Linear Solutions for a Primitive Equation Regional Forecast Model  

Science Conference Proceedings (OSTI)

The possibility of using forecast errors originating from the finite-time dominant linear modes for the prediction of forecast skill for a primitive equation regional forecast model is studied. This is similar to the method for skill prediction ...

Tomislava Vuki?evi?

1993-06-01T23:59:59.000Z

291

Linear Stability Analysis of Runge–Kutta-Based Partial Time-Splitting Schemes for the Euler Equations  

Science Conference Proceedings (OSTI)

For atmospheric simulation models with resolutions from about 10 km to the subkilometer cloud-resolving scale, the complete nonhydrostatic compressible Euler equations are often used. An important integration technique for them is the time-...

Michael Baldauf

2010-12-01T23:59:59.000Z

292

Conservative Transport Schemes for Spherical Geodesic Grids: High-Order Flux Operators for ODE-Based Time Integration  

Science Conference Proceedings (OSTI)

Higher-order finite-volume flux operators for transport algorithms used within Runge–Kutta time integration schemes on irregular Voronoi (hexagonal) meshes are proposed and tested. These operators are generalizations of third- and fourth-order ...

William C. Skamarock; Almut Gassmann

2011-09-01T23:59:59.000Z

293

Objective method to report planner-independent skin/rib maximal dose in balloon-based high dose rate (HDR) brachytherapy for breast cancer  

Science Conference Proceedings (OSTI)

Purpose: An objective method was proposed and compared with a manual selection method to determine planner-independent skin and rib maximal dose in balloon-based high dose rate (HDR) brachytherapy planning. Methods: The maximal dose to skin and rib was objectively extracted from a dose volume histogram (DVH) of skin and rib volumes. A virtual skin volume was produced by expanding the skin surface in three dimensions (3D) external to the breast with a certain thickness in the planning computed tomography (CT) images. Therefore, the maximal dose to this volume occurs on the skin surface the same with a conventional manual selection method. The rib was also delineated in the planning CT images and its maximal dose was extracted from its DVH. The absolute (Abdiff=|D{sub max}{sup Man}-D{sub max}{sup DVH}|) and relative (Rediff[%]=100x(|D{sub max}{sup Man}-D{sub max}{sup DVH}|)/D{sub max}{sup DVH}) maximal skin and rib dose differences between the manual selection method (D{sub max}{sup Man}) and the objective method (D{sub max}{sup DVH}) were measured for 50 balloon-based HDR (25 MammoSite and 25 Contura) patients. Results: The average{+-}standard deviation of maximal dose difference was 1.67%{+-}1.69% of the prescribed dose (PD). No statistical difference was observed between MammoSite and Contura patients for both Abdiff and Rediff[%] values. However, a statistically significant difference (p value dose difference compared with maximal skin dose difference for both Abdiff (2.30%{+-}1.71% vs 1.05%{+-}1.43%) and Rediff[%] (2.32%{+-}1.79% vs 1.21%{+-}1.41%). In general, rib has a more irregular contour and it is more proximally located to the balloon for 50 HDR patients. Due to the inverse square law factor, more dose difference was observed in higher dose range (D{sub max}>90%) compared with lower dose range (D{sub max}low dose ranges. Conclusions: The objective method using volumetric information of skin and rib can determine the planner-independent maximal dose compared with the manual selection method. However, the difference was dose point in 3D planning CT images.

Kim, Yongbok; Trombetta, Mark G. [Department of Radiation Oncology, Allegheny General Hospital, Pittsburgh, Pennsylvania 15212 (United States) and Drexel University College of Medicine, Allegheny Campus, Pittsburgh, Pennsylvania 15212 (United States)

2011-04-15T23:59:59.000Z

294

Experiences from near-real-time satellite-based volcano monitoring in Central America: case studies at Fuego, Guatemala  

Science Conference Proceedings (OSTI)

Over the past decade, remote sensing has been used increasingly in the study of active volcanoes and their associated hazards. Ground-based remote sensing techniques, such as those aimed at the analysis of volcanic gases or fumarole temperatures, are ...

P. W. Webley; M. J. Wooster; W. Strauch; J. A. Saballos; K. Dill; P. Stephenson; J. Stephenson; R. Escobar Wolf; O. Matias

2008-11-01T23:59:59.000Z

295

BWRVIP-212: BWR Vessel and Internals Project, Evaluation of Crack Growth Rates of Nickel-Base Alloys 52, 152, and 690 in BWR Enviro nments  

Science Conference Proceedings (OSTI)

This study summarizes available information on stress corrosion cracking (SCC) performance of high-chromium, nickel-base (Ni-base) alloys in boiling water reactor (BWR) environments.

2009-04-14T23:59:59.000Z

296

Rates and Repayment Services  

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

Customer Letter - Preliminary Review of Drought Adder Component for 2011 Firm Power Rates 2010 Rates and Rate Schedule - Current * 2009 Rates and Rate Schedule 2008 Rates and...

297

Accelerated Publication: Ag nanoparticle-based inkjet printed planar transmission lines for RF and microwave applications: Considerations on ink composition, nanoparticle size distribution and sintering time  

Science Conference Proceedings (OSTI)

Sintering of Ag nanoparticle (NP)-based inkjet printed tracks is a crucial process for the next-generation digitally printed electronics. In particular, while the digital printing, as additive technology, is now well settled for what concerns either ... Keywords: Inkjet printing, Microwave planar transmission lines, Real-time measurements, Silver nanoparticles

A. Chiolerio; M. Cotto; P. Pandolfi; P. Martino; V. Camarchia; M. Pirola; G. Ghione

2012-09-01T23:59:59.000Z

298

A comparison of diagnostic techniques for detecting salmonella spp in equine fecal samples using culture methods, gel-based pcr, and real-time pcr assays  

E-Print Network (OSTI)

Salmonellae are enteric bacteria infecting animals and humans. Large animal clinics and Veterinary Teaching Hospitals are greatly affected by Salmonella outbreaks and nosocomial infection. The risk of environmental contamination and spread of infection is increased when animals are confined in close contact with each other and subjected to increased stress factors. This study was designed to compare double-enrichment culture techniques with Gel-based and Real-time PCR assays in the quest for improved diagnostic methods for detecting Salmonella in equine fecal samples. 120 fecal samples submitted to the Clinical Microbiology Laboratory of the Veterinary Medical Teaching Hospital at Texas A&M University (CML, VMTH, TAMU) were tested for Salmonella using all three techniques. Double-enrichment bacterial culture detected 29 positive results (24%), Real-time PCR detected 33 positive results (27.5%), and Gel-based PCR detected 73 positives results (60.8%). While culture and real-time PCR methods had similar results, the gel-based PCR method detected many more positive results, indicating probable amplicon contamination. Real-time PCR can be completed as soon as the day after submission while culture techniques may take 2 to 5 days to complete. However, viable bacterial cells are needed for antimicrobial susceptibility testing and serotyping: both important for epidemiological studies. Therefore, double-enrichment bacterial culture performed concurrently with real-time PCR methods could be efficient in clinical settings where both accurate and expedient results are required.

Smith, Shelle Ann

2003-05-01T23:59:59.000Z

299

FEASIBILITY STUDY OF THE POTENTIAL USE OF CHEMISTRY BASED EMISSION PREDICTIONS FOR REAL-TIME CONTROL OF MODERN DIESEL ENGINES.  

E-Print Network (OSTI)

. Adding the model to the overall engine and aftertreatment control and diagnostics strategy. "NOx prediction in diesel engines for aftertreatment control," ASME 2003-41196. [5] Aithal SM. 2008-TIME CONTROL OF MODERN DIESEL ENGINES. S. M. Aithal Mathematics and Computer Science Division Argonne National

300

Ultra-Wideband Time-of-Arrival and Angle-of-Arrival Estimation Using a Signal Model Based on Measurements  

Science Conference Proceedings (OSTI)

This paper presents an ultra wideband (UWB) channel sounding scheme with a technique for estimating time of arrival (TOA) and angle of arrival (AOA) using measurement signals. Since the power spectrum over the UWB bandwidth can be measured in advance, ... Keywords: Cramér-Rao bound, multiple signal classification, radio channel measurement and estimation, ultra-wideband propagation

Naohiko Iwakiri; Takehiko Kobayashi

2007-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

Feedback-Based Energy Management in a Standby-Sparing Scheme for Hard Real-Time Systems  

Science Conference Proceedings (OSTI)

The interaction between fault tolerance and energy consumption is an interesting avenue in the realm of designing embedded systems. In this paper, a scheme for reducing energy consumption in conventional standby-sparing systems is introduced. In the ... Keywords: Energy management, Fault-tolerance, Hard real-time system, Feedback control

Mohammad Khavari Tavana; Mohammad Salehi; Alireza Ejlali

2011-11-01T23:59:59.000Z

302

Time-resolved coherent anti-Stokes Raman scattering microscopy: Imaging based on Raman free induction decay  

E-Print Network (OSTI)

. The T-CARS experiment involves three incident electric fields, Em(r,t), with frequencies at m m P1,P2; accepted for publication 10 January 2002 A time-resolved coherent anti-Stokes Raman scattering CARS and the solvent, and thus increasing the detection sensitivity of CARS microscopy significantly. © 2002 American

Xie, Xiaoliang Sunney

303

Just-in-Time Learning Theory-Based Study on the Dynamic Model of Fuel Cell Engine System  

Science Conference Proceedings (OSTI)

Fuel cell car is characterized by zero pollution, high efficiency, low noise and the like. For component selection and control strategy development of fuel cell car, computer simulation is the most common method being adopted. In this paper, the acquisition ... Keywords: fuel cell, CAN, USB, just-in-time learning, system identification

Su Chuqi; Lin Xiang

2009-10-01T23:59:59.000Z

304

Neutrino mass sensitivity by MAC-E-Filter based time-of-flight spectroscopy with the example of KATRIN  

E-Print Network (OSTI)

The KATRIN experiment aims at a measurement of the neutrino mass with a 90 % C.L. sensitivity of 0.2 eV/c$^2$ by measuring the endpoint region of the tritium $\\beta$ decay spectrum from a windowless gaseous molecular tritium source using an integrating spectrometer of the MAC-E-Filter type. We discuss the idea of using the MAC-E-Filter in a time-of-flight mode (MAC-E-TOF) in which the neutrino mass is determined by a measurement of the electron time-of-flight (TOF) spectrum that depends on the neutrino mass. MAC-E-TOF spectroscopy here is a very sensitive method since the $\\beta$-electrons are slowed down to distinguishable velocities by the MAC-E-Filter. Their velocity depends strongly on their surplus energy above the electric retarding potential. Using MAC-E-TOF, a statistical sensitivity gain is expected. Because a small number of retarding-potential settings is sufficient for a complete measurement, in contrast to about 40 different retarding potentials used in the standard MAC-E-Filter mode, there is a gain in measurement time and hence statistical power. The improvement of the statistical uncertainty of the squared neutrino mass has been determined by Monte Carlo simulation to be a factor 5 for an ideal case neglecting background and timing uncertainty. Additionally, two scenarios to determine the time-of-flight of the $\\beta$-electrons are discussed, which use the KATRIN detector for creating the stop signal and different methods for obtaining a start signal. These comprise the hypothetical case of an `electron tagger' which detects passing electrons with minimal interference and the more realistic case of `gated filtering', where the electron flux is periodically cut off by pulsing the pre-spectrometer potential.

Nicholas Steinbrink; Volker Hannen; Eric L. Martin; R. G. Hamish Robertson; Michael Zacher; Christian Weinheimer

2013-08-02T23:59:59.000Z

305

Neutrino mass sensitivity by MAC-E-Filter based time-of-flight spectroscopy with the example of KATRIN  

E-Print Network (OSTI)

The KArlsruhe TRItium Neutrino (KATRIN) experiment aims at a measurement of the neutrino mass with a 90 % confidence limit (C.L.) sensitivity of 0.2 eV/c$^2$ by measuring the endpoint region of the tritium $\\beta$ decay spectrum from a windowless gaseous molecular tritium source using an integrating spectrometer of the MAC-E-Filter type. We discuss the idea of using the MAC-E-Filter in a time-of-flight mode (MAC-E-TOF) in which the neutrino mass is determined by a measurement of the electron time-of-flight (TOF) spectrum that depends on the neutrino mass. MAC-E-TOF spectroscopy here is a very sensitive method since the $\\beta$-electrons are slowed down to distinguishable velocities by the MAC-E-Filter. Their velocity depends strongly on their surplus energy above the electric retarding potential. Using MAC-E-TOF, a statistical sensitivity gain is expected. Because a small number of retarding-potential settings is sufficient for a complete measurement, in contrast to about 40 different retarding potentials used in the standard MAC-E-Filter mode, there is a gain in measurement time and hence statistical power. The improvement of the statistical uncertainty of the squared neutrino mass has been determined by Monte Carlo simulation to be a factor 5 for an ideal case neglecting background and timing uncertainty. Additionally, two scenarios to determine the time-of-flight of the $\\beta$-electrons are discussed, which use the KATRIN detector for creating the stop signal and different methods for obtaining a start signal. These comprise the hypothetical case of an `electron tagger' which detects passing electrons with minimal interference and the more realistic case of `gated filtering', where the electron flux is periodically cut off by pulsing the pre-spectrometer potential.

Nicholas Steinbrink; Volker Hannen; Eric L. Martin; R. G. Hamish Robertson; Michael Zacher; Christian Weinheimer

2013-08-02T23:59:59.000Z

306

Small lesions evaluation based on unsupervised cluster analysis of signal-intensity time courses in dynamic breast MRI  

Science Conference Proceedings (OSTI)

An application of an unsupervised neural network-based computer-aided diagnosis (CAD) system is reported for the detection and characterization of small indeterminate breast lesions, average size 1.1 mm, in dynamic contrast-enhanced MRI. This system ...

A. Meyer-Baese; T. Schlossbauer; O. Lange; A. Wismueller

2009-01-01T23:59:59.000Z

307

A Motion Control Algorithm for a Continuous Mining Machine Based on a Hierarchical Real-Time Control System Design  

E-Print Network (OSTI)

of underground coal mining. The development of control architectures for the control of the movement involved in the support of the United States Bureau of Mines' computer-assisted underground coal mining procedure for a hierarchical computer-assisted coal mining control system. Based on this previous work

308

A Motion Control Algorithm for a Continuous Mining Machine Based on a Hierarchical RealTime Control System Design  

E-Print Network (OSTI)

of underground coal mining. The development of control architectures for the control of the movement involved in the support of the United States Bureau of Mines' computer­assisted underground coal mining procedure for a hierarchical computer­assisted coal mining control system. Based on this previous work

309

Atmospheric Soundings in Near-Real Time from Combined Satellite and Ground-Based Remotely Sensed Data  

Science Conference Proceedings (OSTI)

A mobile profiling system has been developed that is capable of probing the atmosphere from the surface to over 30 km. The Mobile Profiling System (MPS) combines ground-based instruments, including a five-beam 924-MHz radar wind profiler, a radio ...

James Cogan; Edward Measure; Daniel Wolfe

1997-10-01T23:59:59.000Z

310

Use of very-high-frequency plasmas to prepare a-Si:H-based triple-junction solar cells at high deposition rates: Annual technical status report, 11 March 1998--11 March 1999  

DOE Green Energy (OSTI)

This report describes work performed by Energy Conversion Devices, Inc. (ECD) during this phase of this subcontract. ECD researchers have made significant progress in advancing the very high frequency (VHF), high-rate technology. They demonstrated that 8.0% stable efficiencies can be achieved for a-Si:H cells whose i-layers are prepared at rates near 10 {angstrom}/s using the VHF technique. Presently, there is not a great difference in the performance of a-Si:H cells made using the VHF technique and i-layer deposition rates near 10 {angstrom}/s and that for cells made using the standard 13.56 MHz technique and rates near 1 {angstrom}/s in the same deposition system. In terms of the a-SiGe:H cells, researchers have completed a number of studies of devices with properties appropriate for middle-junction cells-that is, cells without Ag/ZnO back-reflectors having Voc values near 0.75V and Jsc values near 8.0 mA/cm{sup 2} when measured using AM1.5 light filtered using a 530-nm, low-band-pass filter. The stabilized proper ties for these cells prepared at i-layer rates near 10 {angstrom}/s are again similar to a-SiGe:H cells made using the same deposition hardware and the low-rate 13.56 MHz method. Establishing an initial 10.5% for a triple-junction cell whose i-layers are prepared at the high rates sets the baseline for ECD's future studies. The triple-junction cell degradation (10%--13%) with prolonged light soaking is similar to that regularly obtained for cells prepared at low i-layer deposition rates (1 {angstrom}/s). This is important because the use of high-rate methods to prepare i-layers typically leads to less-stable materials and cells. Increasing the buffer-layer deposition rate to 6 {angstrom}/s leads to nearly a 15-min decrease in the total deposition time, whereas the increase in the n-layer and p-layer deposition rates both decrease the total time by 5 and 5.8 min, respectively. Thus, besides the i-layer growth rates, increasing the buffer layer growth rate has the strongest effect on the deposition time of the triple-junction semiconductor structures.

Jones, S.J.; Liu, T.; Tsu, D.; Izu, M.

1999-10-25T23:59:59.000Z

311

Testing of an Emitter Turn-Off-Based Static Synchronous Compensator (STATCOM) Controller with Real-Time Digital Simulation  

Science Conference Proceedings (OSTI)

In this report, the testing of a controller for a 10-MVAR emitter turn-off (ETO) static VAR compensator (STATCOM) through hardware-in-the-loop simulation is described. As the STATCOM was initially intended to be placed near a 50-MW wind farm within the Bonneville Power Administration (BPA) system, the wind farm, STATCOM, and relevant portions of the utility system were modeled for a real-time simulator at the Center for Advanced Power Systems (CAPS) at Florida State University. Data for validation of the...

2010-01-20T23:59:59.000Z

312

? Capacity-based design [Preliminary for Part 2] 2. Energy Harvesting Networks Transmission Completion Time Minimization for single link  

E-Print Network (OSTI)

Transmission Completion Time Minimization for single link w / finite battery Extension to fading channels Transmission policies with inefficient energy storage IEEE ICC 2013, Budapest, Hungary 6/9/2013 Goals ? Energy Efficiency (EE): What it meant last decade; what it means today ? From a communication network design perspective what should we care about for energy efficient design of cellular/conventional wireless networks? (greenish) rechargeable/energy harvesting networks? (green) ? Communication with energy harvesting nodes Green, self-sufficient nodes with extended network lifetime Relatively new field with increasing interest IEEE ICC 2013, Budapest, Hungary 6/9/2013 Prerequisites for the Tutorial

Aylin Yener; Short Term; Throughput Maximization

2013-01-01T23:59:59.000Z

313

RARX algorithm based model development and application to real-time data for On-line fault detection  

E-Print Network (OSTI)

Assimilation of cost-effective Fault Detection and Diagnosis (FDD) technique in building management system can save enormous amount of energy and material. In this paper, Recursive Autoregressive Exogenous Algorithm is used to develop dynamic FDD model for variable air volume air handling units. A methodology, based upon frequency response of the model is evolved for automatic fault detection and diagnosis. Results are validated with data obtained from a real building after introducing artificial faults. It is concluded that the method is quite robust and can detect and diagnose several types of faults

Harunori Yoshida; Sanjay Kumar

1999-01-01T23:59:59.000Z

314

Rates and Repayment Services  

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

Rates Loveland Area Project Firm Power Rates Transmission and Ancillary Services Rates 2012 Rate Adjustment-Transmission and Ancillary Services 2010 Rate Adjustment-Firm Power 2009...

315

Rates and Repayment Services  

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

Rates and Repayment Services Consolidated Rate Schedules FY 2014 Rates BCP Annual Rate Process Central Arizona Project Transmission Rate Process DSW Multiple System Transmission...

316

Mythology of rate design  

SciTech Connect

If power rates are determined by marginal costs with clear signals to the consumer, then the load curve will regulate itself without burdening the public with ethical and patriotic issues. Manipulation of the load factor will only cause hardship and inconvenience, but a choice of rates will allow consumers to determine their own balance between rates and convenience. It makes sense to charge consumers the true cost rather than having the same rate apply during a 24-hour period when costs are not uniform. Discussions of how to determine equitable rate structures flounder because we cannot define equity. Economists, who base their recommendations on the assumption that income distribution is reasonable, believe marginal-cost pricing allows the customer to save whatever the utility is saving. Such a system is economically efficient in that the utility charges 100 percent-load-factor consumers according to a base load plant, while charging peak and offpeak consumers what it costs to add them to the system. Adjustment of prices to cause a minimal distortion of the market is the economists' general rule for handling the balancing of cost increases and regulated profits. (DCK)

Streiter, S.H.

1977-01-01T23:59:59.000Z

317

National Utility Rate Database: Preprint  

DOE Green Energy (OSTI)

When modeling solar energy technologies and other distributed energy systems, using high-quality expansive electricity rates is essential. The National Renewable Energy Laboratory (NREL) developed a utility rate platform for entering, storing, updating, and accessing a large collection of utility rates from around the United States. This utility rate platform lives on the Open Energy Information (OpenEI) website, OpenEI.org, allowing the data to be programmatically accessed from a web browser, using an application programming interface (API). The semantic-based utility rate platform currently has record of 1,885 utility rates and covers over 85% of the electricity consumption in the United States.

Ong, S.; McKeel, R.

2012-08-01T23:59:59.000Z

318

The Rate-Controlled Constrained-Equilibrium Approach to Far-From-Local-Equilibrium Thermodynamics  

E-Print Network (OSTI)

The Rate-Controlled Constrained-Equilibrium (RCCE) method for the description of the time-dependent behavior of dynamical systems in non-equilibrium states is a general, effective, physically based method for model order ...

Beretta, Gian Paolo

319

Rates & Repayment  

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

Environmental Review-NEPA Financial Data Operations Planning & Projects Power Marketing Rates Rate Adjustments Transmission Ancillary Services Rates WAPA-137 Rate Order Environmental Review-NEPA Financial Data Operations Planning & Projects Power Marketing Rates Rate Adjustments Transmission Ancillary Services Rates WAPA-137 Rate Order Rates and Repayment Services Rates Current and Historical Rate Information Collbran Power Rates CRSP Power Rates CRSP Transmission System Rates CRSP Management Center interest rates Falcon-Amistad Power Rates Provo River Power Rates Rio Grande Power Rates Seedskadee Power Rates SLCA/IP Power Rates Rate Schedules & Supplemental Rate Information Current Rates for Firm Power, Firm & Non-firm Transmission Service, & Ancillary Services Current Transmission & Ancillary Services Rates Tariffs Components of the SLCA/IP Existing Firm Power Rate Cost Recovery Charge (CRC) Page MOA Concerning the Upper Colorado River Basin

320

PULSE RATE DIVIDER  

DOE Patents (OSTI)

A compact pulse-rate divider circuit affording low impedance output and high input pulse repetition rates is described. The circuit features a single secondary emission tube having a capacitor interposed between its dynode and its control grid. An output pulse is produced at the anode of the tube each time an incoming pulse at the control grid drives the tube above cutoff and the duration of each output pulse corresponds to the charging time of the capacitor. Pulses incoming during the time the grid bias established by the discharging capacitor is sufficiently negative that the pulses are unable to drive the tube above cutoff do not produce output pulses at the anode; these pulses are lost and a dividing action is thus produced by the circuit. The time constant of the discharge path may be vanied to vary in turn the division ratio of the circuit; the time constant of the charging circuit may be varied to vary the width of the output pulses. (AEC)

McDonald, H.C. Jr.

1962-12-18T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

Merger Rates of Dark-Matter Haloes  

E-Print Network (OSTI)

We derive analytic merger rates for dark-matter haloes within the framework of the Extended Press-Schechter (EPS) formalism. These rates become self-consistent within EPS once we realize that the typical merger in the limit of a small time-step involves more than two progenitors, contrary to the assumption of binary mergers adopted in earlier studies. We present a general method for computing merger rates that span the range of solutions permitted by the EPS conditional mass function, and focus on a specific solution that attempts to match the merger rates in N-body simulations. The corrected EPS merger rates are more accurate than the earlier estimates of Lacey & Cole, by ~20% for major mergers and by up to a factor of ~3 for minor mergers of mass ratio 1:10^4. Based on the revised merger rates, we provide a new algorithm for constructing Monte-Carlo EPS merger trees, that could be useful in Semi-Analytic Modeling. We provide analytic expressions and plot numerical results for several quantities that are very useful in studies of galaxy formation. This includes (a) the rate of mergers of a given mass ratio per given final halo, (b) the fraction of mass added by mergers to a halo, and (c) the rate of mergers per given main progenitor. The creation and destruction rates of haloes serve for a self-consistency check. Our method for computing merger rates can be applied to conditional mass functions beyond EPS, such as those obtained by the ellipsoidal collapse model or extracted from $N$-body simulations.

Eyal Neistein; Avishai Dekel

2008-02-04T23:59:59.000Z

322

Good Timing: NIST/CU Collaboration Adds Timing Capability ...  

Science Conference Proceedings (OSTI)

... With the added capability to track the timing of dynamic biochemical reactions, cell ... to measure sensor signals at two points in time at a rate of up to ...

2012-02-07T23:59:59.000Z

323

Design criteria linear power rate-of-rise instrumentation  

SciTech Connect

Studies of reactor safety considerations have demonstrated the need for automatic safety circuit action based on the measured rate of power increase in the power level range from 10{sup {minus}2} to 10 {sup 0} times equilibrium power level. Budget and Preliminary Engineering Studies were performed. This document provides the design criteria for detailed design of the proposed Linear Power Rate-Of-Rise Instrumentation facilities and is applicable to any of the eight IPD reactors.

Herrman, B.W.

1964-01-16T23:59:59.000Z

324

Asymptotic Cellular Growth Rate as the Effective Information Utilization Rate  

E-Print Network (OSTI)

We study the average asymptotic growth rate of cells in randomly fluctuating environments. Using a game-theoretic perspective, we show that any response strategy has an asymptotic growth rate, which is the sum of: (i) the maximal growth rate at the worst possible distribution of environments, (ii) relative information between the actual distribution of environments to the worst one, and (iii) information utilization rate which is the information rate of the sensory devices minus the "information dissipation rate", the amount of information not utilized by the cell for growth. In non-stationary environments, the optimal strategy is the time average of the instantaneous optimal strategy and the optimal switching times are evenly spaced in the statistical (Fisher) metric.

Pugatch, Rami; Tlusty, Tsvi

2013-01-01T23:59:59.000Z

325

A multidiscipline and multi-rate modeling framework for planar solid-oxide fuel cell based power-conditioning system for vehicular APU  

Science Conference Proceedings (OSTI)

We develop a numerical modeling framework for planar solid-oxide fuel cell (PSOFC) based vehicular auxiliary power unit (APU). The power-conditioning system (PCS) model comprises the comprehensive transient models of PSOFC, balance-of-plant and power-electronics ...

Sudip K. Mazumder; Sanjaya Pradhan; Joseph Hartvigsen; Diego Rancruel; Michael R. von Spakovsky; Moe Khaleel

2007-07-01T23:59:59.000Z

326

PowerChoice Residential Customer Response to TOU Rates  

E-Print Network (OSTI)

in Residential Electricity Time-of-Use Rates. ” Journal ofResidential Response to Voluntary Time-of-Use Electricity Rates. ”

Peters, Jane S.

2010-01-01T23:59:59.000Z

327

Analysis based on the Wavelet & Hilbert Transforms applied to the full time series of interbeats for a triad of failures at the heart  

E-Print Network (OSTI)

A tetra of sets which elements are time series including interbeats has been obtained from the databank Physionet-MIT-BIH, corresponding to the following failures at the heart of humans: Obstructive Sleep Apnea, Congestive Heart Failure, and Atrial Fibrillation, and has been analyzed statistically using an already known technique based on the Wavelet and Hilbert Transforms. That technique has been applied to the time series of interbeats for 87 patients in order to find the intrinsical dynamics of their hearts. The length of the times series varies approachly from 7 to 24 h. The kind of wavelet selected for the study has been any one belonging to the families: Daubechies, Biortoghonal, and Gaussian. The analysis has been done for the complet set of scales ranging from: 1-128 heartbeats. Choosing the Biorthogonal wavelet: bior3.1, it is observed: (a) That a time serie has not to be cutted in shorter periods with the purpose of obtaining the collapse of the data, (b) An analytical, universal behavior of the dat...

Ritto, P A

2007-01-01T23:59:59.000Z

328

Real-Time Observation of Platinum Redispersion on Ceria-Based Oxide by In-situ Turbo-XAS in Fluorescence Mode  

Science Conference Proceedings (OSTI)

A real-time observation of the redispersion behavior of sintered Pt on ceria-based oxide was made possible by in-situ time-resolved Turbo-XAS in fluorescence mode. 2 wt% Pt/Ce-Zr-Y mixed oxide samples were prepared, and then treated under an aging condition. The average Pt particle size measured by CO absorption method after aging was 7 nm. Redispersion treatments of the previously aged catalyst were carried out at 600 deg. C within an in-situ XAS cell in a cyclical flow of reducing/oxidizing gases. Pt L3-edge XANES spectra were collected every 1.1 second under in-situ conditions. From a change in the XANES spectra, we observed that the Pt particle size of the aged catalyst decreased from 7 to 5 nm after 60 seconds and then to 3 nm after 1000 seconds.

Nagai, Yasutaka; Dohmae, Kazuhiko; Tanabe, Toshitaka; Shinjoh, Hirofumi [TOYOTA Central R and D Labs., Inc., Nagakute, Aichi, 480-1192 (Japan); Takagi, Nobuyuki [TOYOTA Motor Corporation Higashi-fuji Technical Center, Shizuoka, 410-1193 (Japan); Ikeda, Yasuo [TOYOTA Motor Europe Technical Centre, Zaventem, B-1930 (Belgium); Guilera, Gemma; Pascarelli, Sakura; Newton, Mark [European Synchrotron Radiation Facility, Grenoble, F-38043 (France); Matsumoto, Shin'ichi [TOYOTA Motor Corporation, Toyota, Aichi, 471-8572 (Japan)

2007-02-02T23:59:59.000Z

329

High-Rate Cathodes Based on Li3V2(PO4)3 Nanobelts Prepared via Surfactant-Assisted Fabrication  

DOE Green Energy (OSTI)

In this work, we synthesized monoclinic Li3V2(PO4)3 nanobelts via a single-step, solid-state reaction process in a molten hydrocarbon. The as-prepared Li3V2(PO4)3 nanoparticles have a unique nanobelt shape and are ~50-nm thick. When cycled in a voltage range between 3.0 V and 4.3V at a 1C rate, these unique Li3V2(PO4)3 nanobelts demonstrated a specific discharge capacity of 131 mAh g-1 (which is close to the theoretical capacity of 132 mAh g-1) and stable cycling characteristics.

Pan, Anqiang; Choi, Daiwon; Zhang, Jiguang; Liang, Shu-quan; Cao, Guozhong; Nie, Zimin; Arey, Bruce W.; Liu, Jun

2011-04-01T23:59:59.000Z

330

Comparison of the rate constants for energy transfer in the light-harvesting protein, C-phycocyanin, calculated from Foerster`s theory and experimentally measured by time-resolved fluorescence spectroscopy  

DOE Green Energy (OSTI)

We have measured and assigned rate constants for energy transfer between chromophores in the light-harvesting protein C-phycocyanin (PC), in the monomeric and trimeric aggregation states, isolated from Synechococcus sp. PCC 7002. In order to compare the measured rate constants with those predicted by Fdrster`s theory of inductive resonance in the weak coupling limit, we have experimentally resolved several properties of the three chromophore types ({beta}{sub 155} {alpha}{sub 84}, {beta}{sub 84}) found in PC monomers, including absorption and fluorescence spectra, extinction coefficients, fluorescence quantum yields, and fluorescence lifetimes. The cpcB/C155S mutant, whose PC is missing the {beta}{sub 155} chromophore, was, useful in effecting the resolution of the chromophore properties and in assigning the experimentally observed rate constants for energy transfer to specific pathways.

Debreczeny, M.P.

1994-05-01T23:59:59.000Z

331

Fair rate assignment in interference limited multi-hop networks  

E-Print Network (OSTI)

1.2 Utility Based Fair Rate Assignment . . . . . . 1.2.1de?ned in [21]. Utility Based Fair Rate Assignment In thisfunction. The utility based fair rate assignment policy (

Arisoylu, Mustafa

2006-01-01T23:59:59.000Z

332

First Evaluation of the CPU, GPGPU and MIC Architectures for Real Time Particle Tracking based on Hough Transform at the LHC  

E-Print Network (OSTI)

Recent innovations focused around {\\em parallel} processing, either through systems containing multiple processors or processors containing multiple cores, hold great promise for enhancing the performance of the trigger at the LHC and extending its physics program. The flexibility of the CMS/ATLAS trigger system allows for easy integration of computational accelerators, such as NVIDIA's Tesla Graphics Processing Unit (GPU) or Intel's \\xphi, in the High Level Trigger. These accelerators have the potential to provide faster or more energy efficient event selection, thus opening up possibilities for new complex triggers that were not previously feasible. At the same time, it is crucial to explore the performance limits achievable on the latest generation multicore CPUs with the use of the best software optimization methods. In this article, a new tracking algorithm based on the Hough transform will be evaluated for the first time on a multi-core Intel Xeon E5-2697v2 CPU, an NVIDIA Tesla K20c GPU, and an Intel \\xphi\\ 7120 coprocessor. Preliminary time performance will be presented.

V. Halyo; P. LeGresley; P. Lujan; V. Karpusenko; A. Vladimirov

2013-10-28T23:59:59.000Z

333

Plant Tumor Growth Rates  

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

Plant Tumor Growth Rates Plant Tumor Growth Rates Name: Gina and Maria Location: N/A Country: N/A Date: N/A Question: We are doing a science fair project on if B. Carotene, Green tea, and Grape Seed Extract helps plants against the crown gall disease. We injected sunflowers with agrobacterium tum. one week ago (Sun. Feb. 27, 2000). Our questions is how long will it take for the tumors to grow? We scratched the surface of the stems and injected the agrobacterium in the wound. Also which do you think, in your opinion, will do the best, if any? Our science fair is April 13, do you think we'll have growth before then, atleast enough time to do our conclusion and results? Thank you, any information you forward will be very helpful. Replies: Sunflowers form galls relatively quickly. I usually get them in two weeks at least. Good luck.

334

On the Effect of Random Alternating Perturbations on Hazard Rates  

E-Print Network (OSTI)

We consider a model for systems perturbed by dichotomous noise, in which the hazard rate function of a random lifetime is subject to additive time-alternating perturbations described by the telegraph process. This leads us to define a real-valued continuous-time stochastic process of alternating type expressed in terms of the integrated telegraph process for which we obtain the probability distribution, mean and variance. An application to survival analysis and reliability data sets based on confidence bands for estimated hazard rate functions is also provided.

Di Crescenzo, Antonio

2006-01-01T23:59:59.000Z

335

ARM - Measurement - Radiative heating rate  

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

govMeasurementsRadiative heating rate govMeasurementsRadiative heating rate ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Radiative heating rate The heating rate due to the divergence of long and shortwave radiative flux. Categories Radiometric, Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. External Instruments MOLTS : Model Output Location Time Series Datastreams MOLTS : Model Output Location Time Series Datastreams MOLTSEDASSNDCLASS1 : Model Output Loc. Time Ser. (MOLTS): EDAS

336

Instability statistics and mixing rates  

E-Print Network (OSTI)

We claim that looking at probability distributions of \\emph{finite time} largest Lyapunov exponents, and more precisely studying their large deviation properties, yields an extremely powerful technique to get quantitative estimates of polynomial decay rates of time correlations and Poincar\\'e recurrences in the -quite delicate- case of dynamical systems with weak chaotic properties.

Roberto Artuso; Cesar Manchein

2009-06-03T23:59:59.000Z

337

Air pollution: Coal based power plants major culprit : HindustanTimes.com http://www.hindustantimes.com/news/5922_1646830,001500250000000... 1 of 2 3/10/2006 7:45 AM  

E-Print Network (OSTI)

Air pollution: Coal based power plants major culprit : HindustanTimes.com http 1 Front » Story Air pollution: Coal based power plants major culprit HT Correspondent Kanpur, March that coal based thermal power plants are the main source for air pollution. The fact came to the fore during

Singh, Ramesh P.

338

PowerChoice Residential Customer Response to TOU Rates  

E-Print Network (OSTI)

1983. Time-of-Day Electricity Rates for the United States.to Voluntary Time-of-Use Electricity Rates. ” Resource andCompared to your old electricity rate, would you say that

Peters, Jane S.

2010-01-01T23:59:59.000Z

339

PowerChoice Residential Customer Response to TOU Rates  

E-Print Network (OSTI)

1983. Time-of-Day Electricity Rates for the United States.Effect of Time-of-Use Rates In the Los Angeles ElectricityCustomer Response to TOU Rates. Research Into Action. Public

Peters, Jane S.

2010-01-01T23:59:59.000Z

340

A density functional theory and time-dependent density functional theory investigation on the anchor comparison of triarylamine-based dyes  

SciTech Connect

To understand the effects of the anchor part in organic dyes on the energy conversion efficiency of dye-sensitized solar cells (DSCs), two different anchor groups used in metal-free triphenylamine (TPA)-based organic dyes for DSCs have been theoretically compared. Density functional theory (DFT) and time-dependent DFT (TDDFT) study of geometry properties, excitations, and electronic structures of triarylamine-based dyes (TC1 and TPAR1) before and after binding to titanium has been performed under the level of TD-PBE1PBE/6-311G(d,p)//B3LYP/6-311G(d,p). The result shows that cyanoacrylic acid anchor favors better photoelectrochemical properties of DSCs than that of rhodanine-3-acetic acid anchor via providing more shift of TiO{sub 2} conduction band toward the vacuum energy levels (larger open circuit potentials) and more favorable conjugation with titanium. This study is expected to shed light on the design of metal-free organic dyes for DSCs.

Peng Bo; Yang Siqi; Li Lanlan; Cheng Fangyi; Chen Jun [Institute of New Energy Material Chemistry and Key Laboratory of Energy-Material Chemistry, Chemistry College, Nankai University, Tianjin 300071 (China)

2010-01-21T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

Cumulus Parameterization and Rainfall Rates I  

Science Conference Proceedings (OSTI)

Modeling of convective rainfall rates is a central problem in tropical meteorology. Toward numerical weather prediction efforts the semi-prognostic approach (i.e., a one time-step prediction of rainfall rates) provides a relevant test of cumulus ...

T. N. Krishnamurti; Y. Ramanathan; Hua-Lu Pan; Richard J. Pasch; John Molinari

1980-04-01T23:59:59.000Z

342

Geomagnetic Reversals: Rates, Timescales, Preferred Paths,  

E-Print Network (OSTI)

Geomagnetic Reversals: Rates, Timescales, Preferred Paths, Statistical Models and Simulations: Geomagnetic reversals, Reversal rates, Paleointensity, Statistics of Geodynamo September 30, 2001 #12;Abstract Paleomagnetic data on geomagnetic reversals are divided into two general categories: times of occurrence

Constable, Catherine G.

343

Data Center Rating Infrastructure Rating Development  

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

in Portfolio Manager on June 7, 2010. The questions below are designed to help data center owners and operators better understand the rating and benchmark their buildings in...

344

Supernova rates and stellar populations  

E-Print Network (OSTI)

We discuss the results about the nature of type Ia Supernovae that can be derived by studying their rates in different stellar populations. While the evolution of SN photometry and spectra can constrain the explosion mechanism, the SN rate depends on the progenitor system. We review the current available data on rates as a function of parent galaxy color, morphology, star formation rate, radio luminosity and environment. By studying the variation of the rates with the color of the parent galaxy, a strong evidence was established that type Ia SNe come from both young and old stars. The dependence of the rates with the radio power of the parent galaxy is best reproduced by a bimodal distribution of delay time between the formation of the progenitor and its explosion as a SN. Cluster early-type galaxies show higher type Ia SN rate with respect to field galaxies, and this effect can be due either to traces of young stars or to differences in the delay time distribution.

F. Mannucci

2007-08-03T23:59:59.000Z

345

Tracking the Libor Rate  

E-Print Network (OSTI)

Investigating the Libor Rate,” mimeo. Abrantes-Metz, R. ,Libor data: Historial 1 month Libor rates, British Bankers1108R) Tracking the Libor Rate Rosa M. Abrantes-Metz , Sofia

Abrantes-Metz, Rosa; Villas-Boas, Sofia B.; Judge, George G.

2013-01-01T23:59:59.000Z

346

Multichannel Sampling of Pulse Streams at the Rate of Innovation  

E-Print Network (OSTI)

We consider minimal-rate sampling schemes for streams of delayed and weighted versions of a known pulse shape. Such signals belong to the class of finite rate of innovation (FRI) models. The minimal sampling rate for these parametric signals, is the number of degrees of freedom per unit of time, referred to as the rate of innovation. Although sampling of pulse streams was treated in previous works, either the rate of innovation was not achieved, or the pulse shape was limited to diracs and the method was instable for high rates of innovation. In this work we propose a multichannel framework for pulse streams with arbitrary shape, operating at the rate of innovation. Our approach is based on modulating the input signal with a set of properly chosen waveforms, followed by a bank of integrators. We show that the pulse stream can be recovered from the proposed minimal-rate samples using standard tools taken from spectral estimation in a stable way even at high rates of innovation. In addition, we address practica...

Gedalyahu, Kfir; Eldar, Yonina C

2010-01-01T23:59:59.000Z

347

Richard Cantor Rating Transitions and Defaults Conditional on Watchlist, Outlook and Rating History Summary  

E-Print Network (OSTI)

This report documents global corporate credit rating transition and default rates during the 1995-2003 period conditional on the full information in Moody's published credit opinions, which, in addition to the current credit rating, include prior rating actions and current rating outlooks and reviews. The primary findings of this study are: • Moody’s rating system management practices attempt to limit rating reversals and dampen rating change volatility and, as a consequence, different issuers carrying the same rating may have different risks of rating migration and default. • As noted in Moody’s prior research dating back to 1993, recently downgraded issuers have a greater likelihood of future rating downgrades and default than do recently upgraded issuers. For example, obligors downgraded in the past twelve months are eight times more likely to be downgraded than upgraded in the next year. Downgraded issuers are eleven times more likely to default over one year than upgraded issuers. • Moody’s rating outlooks and reviews are used to signal the likely direction and timing of future rating actions and the evolution of default risk. For example, at a one-year time horizon, issuers with negative outlooks are seven times more likely to be downgraded than upgraded; issuers with positive outlooks are nearly twice as likely to be upgraded as downgraded; and issuers with stable outlooks have the highest probability of no rating change. Default rates within a given rating category also vary systematically by outlook status. For example,

unknown authors

2004-01-01T23:59:59.000Z

348

2012 Rate Adjustments  

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

Register Notices Meetings Brochure Brochure Addendum Customer Comment Letter Approved Rate Order FERC Confirmation If you have questions, call Rates and Repayment, 800-472-2306...

349

Rail Coal Transportation Rates  

U.S. Energy Information Administration (EIA)

figure data Figure 7 shows the percent change in average real rates for those state-to-state ... Estimated transportation rates for coal delivered to electric ...

350

Effective Rate Period  

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

10012012 - 09302013 Mid-Year Changes (if applicable) 10012012 - 09302013 Power Rates Annual Revenue Requirement Rate Schedule Power Revenue Requirement 73,381,487...

351

Foolproof completions for high rate production wells  

E-Print Network (OSTI)

Operators, especially those managing production from deepwater reservoirs, are striving to produce hydrocarbons at higher and higher rates without exposing the wells to completion failure risk. To avoid screen failures, recent studies have favored gravel pack (GP) and high rate water pack (HRWP) completions over high-permeability fracturing (HPF), known in the vernacular as a frac&pack (FP) for very high rate wells. While a properly designed GP completion may prevent sand production, it does not stop formation fines migration, and, over time, fines accumulation in the GP will lead to increasing completion skin. Although, and not always, the skin can be removed by acidizing, it is not practical to perform repeated acid treatments on deepwater wells, particularly those with subsea wellheads, and the alternative has been to subject the completion to increasingly high drawdown, accepting a high skin effect. A far better solution is to use a HPF completion. Of course the execution of a successful HPF is not a trivial exercise, and frequently, there is a steep learning curve for such a practice. This work explains the importance to HPF completions of the well trajectory through the interval to be hydraulically fractured, for production, not execution, reasons. A new model quantifies the effect of the well inclination on the connectivity between the fracture and the well via perforations. Guidelines based on the maximum target production rate, including forecasts of multiphase flow, are provided to size the HPF completion to avoid common completion failures that may result from high fluid rate and/or fines movement. Skin model will be developed for both vertical and deviated wells. Once the HPF is properly designed and executed, the operators should end up with a long term low skin good completion quality well. The well will be safely produced at the maximum flow rates, with no need for well surveillance and monitoring.

Tosic, Slavko

2007-12-01T23:59:59.000Z

352

Managing time  

Science Conference Proceedings (OSTI)

Professionals overwhelmed with information glut can find hope from new insights about time management.

Peter J. Denning

2011-03-01T23:59:59.000Z

353

Essays in time and risk  

E-Print Network (OSTI)

lists yield systematically higher discount rates and utilityList methodology: identifying time preferences with MPLs and utilityrisk price list to inform curvature of the utility function

Sprenger, Charles

2011-01-01T23:59:59.000Z

354

LINEAR COUNT-RATE METER  

DOE Patents (OSTI)

A linear count-rate meter is designed to provide a highly linear output while receiving counting rates from one cycle per second to 100,000 cycles per second. Input pulses enter a linear discriminator and then are fed to a trigger circuit which produces positive pulses of uniform width and amplitude. The trigger circuit is connected to a one-shot multivibrator. The multivibrator output pulses have a selected width. Feedback means are provided for preventing transistor saturation in the multivibrator which improves the rise and decay times of the output pulses. The multivibrator is connected to a diode-switched, constant current metering circuit. A selected constant current is switched to an averaging circuit for each pulse received, and for a time determined by the received pulse width. The average output meter current is proportional to the product of the counting rate, the constant current, and the multivibrator output pulse width.

Henry, J.J.

1961-09-01T23:59:59.000Z

355

Timed Property Sequence Chart  

Science Conference Proceedings (OSTI)

Property Sequence Chart (PSC) is a novel scenario-based notation, which has been recently proposed to represent temporal properties of concurrent systems. This language balances expressive power and simplicity of use. However, the current version of ... Keywords: Property Sequence Chart, Real-time specification patterns, Timed Property Sequence Chart, Timing properties

Pengcheng Zhang; Bixin Li; Lars Grunske

2010-03-01T23:59:59.000Z

356

A neural network for real-time retrievals of PWV and LWP from Arctic millimeter-wave ground-based observations.  

SciTech Connect

This paper presents a new neural network (NN) algorithm for real-time retrievals of low amounts of precipitable water vapor (PWV) and integrated liquid water from millimeter-wave ground-based observations. Measurements are collected by the 183.3-GHz G-band vapor radiometer (GVR) operating at the Atmospheric Radiation Measurement (ARM) Program Climate Research Facility, Barrow, AK. The NN provides the means to explore the nonlinear regime of the measurements and investigate the physical boundaries of the operability of the instrument. A methodology to compute individual error bars associated with the NN output is developed, and a detailed error analysis of the network output is provided. Through the error analysis, it is possible to isolate several components contributing to the overall retrieval errors and to analyze the dependence of the errors on the inputs. The network outputs and associated errors are then compared with results from a physical retrieval and with the ARM two-channel microwave radiometer (MWR) statistical retrieval. When the NN is trained with a seasonal training data set, the retrievals of water vapor yield results that are comparable to those obtained from a traditional physical retrieval, with a retrieval error percentage of {approx}5% when the PWV is between 2 and 10 mm, but with the advantages that the NN algorithm does not require vertical profiles of temperature and humidity as input and is significantly faster computationally. Liquid water path (LWP) retrievals from the NN have a significantly improved clear-sky bias (mean of {approx}2.4 g/m{sup 2}) and a retrieval error varying from 1 to about 10 g/m{sup 2} when the PWV amount is between 1 and 10 mm. As an independent validation of the LWP retrieval, the longwave downwelling surface flux was computed and compared with observations. The comparison shows a significant improvement with respect to the MWR statistical retrievals, particularly for LWP amounts of less than 60 g/m{sup 2}.

Cadeddu, M. P.; Turner, D. D.; Liljegren, J. C.; Decision and Information Sciences; Univ. of Wisconsin at Madison

2009-07-01T23:59:59.000Z

357

Achieving the Gaussian Rate-Distortion Function by Prediction  

E-Print Network (OSTI)

The "water-filling" solution for the quadratic rate-distortion function of a stationary Gaussian source is given in terms of its power spectrum. This formula naturally lends itself to a frequency domain "test-channel" realization. We provide an alternative time-domain realization for the rate-distortion function, based on linear prediction. This solution has some interesting implications, including the optimality at all distortion levels of pre/post filtered vector-quantized differential pulse code modulation (DPCM), and a duality relationship with decision-feedback equalization (DFE) for inter-symbol interference (ISI) channels.

Zamir, Ram; Erez, Uri

2007-01-01T23:59:59.000Z

358

Risk Impact Assessment of Extended Integrated Leak Rate Testing Intervals  

Science Conference Proceedings (OSTI)

This report presents a risk impact assessment for extending integrated leak rate test (ILRT) surveillance intervals to 15 years. The assessment demonstrates that on an industry-wide basis there is small risk associated with the extension, provided that the performance bases and defense-in-depth are maintained. There is an obvious benefit in not performing costly, critical-path, time-consuming tests that provide a limited benefit from a risk perspective.

2008-10-31T23:59:59.000Z

359

Mar_13Times.indd  

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

MARCH 2013 MARCH 2013 inside this issue ... FIRP draws to a close Page 2 Reminisce: Y-12 turns 70 Page 4 Russia's secret city Page 5 Development retools its CONOPS Page 6 ... and other Y-12 news Miss an issue? Find us online, http://www.y12.doe.gov/news/times.php MISSION, cont. on pg. 2 The National Nuclear Security Administration's Performance Evaluation Report for B&W Y-12, released Feb. 11, gave "Very Good" ratings to B&W Y-12 in areas related to all three core missions: maintaining the nuclear weapons stockpile, powering the nuclear Navy and nonproliferation. The report evaluates B&W Y-12's performance based on the Performance Evaluation Plan approved at the beginning of fi scal 2012. Programs The Y-12 Times highlighted the success of fi

360

rates | OpenEI  

Open Energy Info (EERE)

rates rates Dataset Summary Description This dataset, compiled by NREL and Ventyx, provides average residential, commercial and industrial electricity rates by zip code for both investor owned utilities (IOU) and non-investor owned utilities. Note: the file includes average rates for each utility, but not the detailed rate structure data found in the database available via the zip-code look-up feature on the OpenEI Utilities page (http://en.openei.org/wiki/Gateway:Utilities). The data was released by NREL/Ventyx in February 2011. Source NREL and Ventyx Date Released February 24th, 2012 (2 years ago) Date Updated Unknown Keywords electric rates rates US utilities Data text/csv icon IOU rates by zipcode (csv, 1.7 MiB) text/csv icon Non-IOU rates by zipcode (csv, 2.1 MiB)

Note: This page contains sample records for the topic "time based rate" 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

Data Center Rating Infrastructure Rating Development  

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

future costs of purchasing new lamps - and the labor costs associated with changing light bulbs - because they last 10 times longer. Install programmable thermostats in...

362

Reproduction Rates for 1990–2002 and Intrinsic Rates for 2000–2001: United States  

E-Print Network (OSTI)

Objective—This report presents revised rates of reproduction for 1990–93, reproduction rates for 1994–2002, and intrinsic rates for 2000–2001. The revised rates for 1991–93 are based on populations consistent with the April 1, 2000, census, as are the rates for 1994–2002. Methods—Tabular and graphic data on the reproduction and intrinsic rates by race and Hispanic origin of mother are presented and described. Results—Rates of reproduction (total fertility, gross reproduction, and net reproduction rates), the intrinsic rate of natural increase, and the intrinsic birth rate were lower in 2001 (and 2002) than 1990. Among the race and Hispanic subgroups, the reproduction rates were lower for all groups except Cubans and whites (total). The overall intrinsic death rate increased between 1990 and 2001 with the rate declining for whites (total) but increasing for blacks (total).

Brady E. Hamilton, Ph.D.; Division Of Vital Statistics

2004-01-01T23:59:59.000Z

363

Distributed Rate Allocation for Wireless Networks  

E-Print Network (OSTI)

This paper describes a distributed algorithm for rate allocation in wireless networks. As the main result, the paper establishes that this algorithm is throughput-optimal for very general class of throughput regions. In contrast to distributed on-off scheduling algorithms, this algorithm enables optimal utilization of physical layer schemes by scheduling multiple rate levels. The algorithm is based on a Markov process on these discrete set of rates with certain transition rates. For dealing with multiple rate levels, the paper introduces an important structure for the transition rates, which enable the design of appropriate update rule for these transition rates. The update uses local queue length information alone, and thus does not require global exchange of queue length information. In addition, the algorithm requires that each link can determine the feasibility of increasing its data-rate from the current value without reducing the data-rates of other links. Determining rate feasibility does not introduce...

Jose, Jubin

2010-01-01T23:59:59.000Z

364

Entropic Time  

Science Conference Proceedings (OSTI)

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

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

2011-03-14T23:59:59.000Z

365

Tracking the Libor Rate  

E-Print Network (OSTI)

Paper 1108R2 Paper 1108R) Tracking the Libor Rate Rosa M.revision 2013 by author(s). Tracking the Libor Rate Rosa M.providing a methodology for tracking the dynamic integrity

Abrantes-Metz, Rosa; Villas-Boas, Sofia B.; Judge, George G.

2013-01-01T23:59:59.000Z

366

2009 Rate Adjustments  

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

provisional rates will be in effect until the Federal Energy Regulatory Commission (FERC) confirms and approves them on a final basis or until they are replaced by other rates....

367

Mouse heart rate  

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

Mouse heart rate Name: amj Status: NA Age: NA Location: NA Country: NA Date: Around 1993 Question: Is it possible to get the heart rate of a mouse without special equipment?...

368

FERC rate incentives for transmission infrastructure development  

Science Conference Proceedings (OSTI)

With enactment of the Energy Policy Act of 2005, Congress delivered a mandate to the Federal Energy Regulatory Commission to establish regulations that would provide for incentive-based rate treatments for investments that would improvement the nation's electric transmission system. That has required FERC to move from merely approving cost-based rates for transmission services to enacting new regulations that would make it more attractive to invest in transmission infrastructure without offending the ''just and reasonable'' rate standard. (author)

Snarr, Steven W.

2010-03-15T23:59:59.000Z

369

Determination of influence factors and accident rates for the Armored Tractor/Safe Secure Trailer  

Science Conference Proceedings (OSTI)

Operating environments, such as road type, road location, and time of day, play an important role in the observed accident rates of heavy trucks used in general commerce. These same factors influence the accident rate of the Armored Tractor/Safe Secure Trailer (AT/SST) used by the Department of Energy to transport hazardous cargos within the continental United States. This report discusses the development of accident rate influence factors. These factors, based on heavy trucks used in general commerce, are used to modify the observed overall AT/SST accident rate to account for the different operating environments.

Phillips, J.S.; Clauss, D.B. [Sandia National Labs., Albuquerque, NM (United States); Blower, D.F. [Univ. of Michigan Transportation Research Institute, Ann Arbor, MI (United States). Center for National Truck Statistics

1994-04-01T23:59:59.000Z

370

Effects of Sequence Partitioning on Compression Rate  

E-Print Network (OSTI)

In the paper, a theoretical work is done for investigating effects of splitting data sequence into packs of data set. We proved that a partitioning of data sequence is possible to find such that the entropy rate at each subsequence is lower than entropy rate of the source. Effects of sequence partitioning on overall compression rate are argued on the bases of partitioning statistics, and then, an optimization problem for an optimal partition is defined to improve overall compression rate of a sequence.

Alagoz, B Baykant

2010-01-01T23:59:59.000Z

371

PBXN-9 Ignition Kinetics and Deflagration Rates  

SciTech Connect

The ignition kinetics and deflagration rates of PBXN-9 were measured using specially designed instruments at LLNL and compared with previous work on similar HMX based materials. Ignition kinetics were measured based on the One Dimensional Time-to-Explosion combined with ALE3D modeling. Results of these experiments indicate that PBXN-9 behaves much like other HMX based materials (i.e. LX-04, LX-07, LX-10 and PBX-9501) and the dominant factor in these experiments is the type of explosive, not the type of binder/plasticizer. In contrast, the deflagration behavior of PBXN-9 is quite different from similar high weight percent HMX based materials (i.e LX-10, LX-07 and PBX-9501). PBXN-9 burns in a laminar manner over the full pressure range studied (0-310 MPa) unlike LX-10, LX-07, and PBX-9501. The difference in deflagration behavior is attributed to the nature of the binder/plasticizer alone or in conjunction with the volume of binder present in PBXN-9.

Glascoe, E; Maienschein, J; Burnham, A; Koerner, J; Hsu, P; Wemhoff, A

2008-04-24T23:59:59.000Z

372

Direct Measurement of Initial Enrichment, Burn-up and Cooling Time of Spent Fuel Assembly with a Differential Die-Away Technique Based Instrument  

SciTech Connect

An outline of this presentation of what a Differential Die-Away (DDA) instrument can do are: (1) Principle of operation of DDA instrument; (2) Determination of initial enrichment (IE) ({sigma} < 5%); (3) Determination of burn up (BU) ({sigma} {approx} 6%); (4) Determination of cooling time (CT) ({sigma} {approx} 20-50%); and (5) DDA instrument as a standalone device. DDA response (fresh fuel vs. spent fuel) is: (1) Fresh fuel => DDA response increases (die-away time is longer) with increasing fissile content; and (2) Spent fuel => DDA response decreases (die-away time is shorter) with higher burn-up (i.e. more neutron absorbers present).

Henzl, Vladimir [Los Alamos National Laboratory; Swinhoe, Martyn T. [Los Alamos National Laboratory; Tobin, Stephen J. [Los Alamos National Laboratory

2012-07-13T23:59:59.000Z

373

Grid-based methods for diatomic quantum scattering problems II: Time-dependent treatment of single- and two-photon ionization of H2+  

SciTech Connect

The time-dependent Schr\\"odinger equation for H2+ in a time-varying electromagnetic field is solved in the fixed-nuclei approximation using a previously developed finite-element/ discrete variable representation in prolate spheroidal coordinates. Amplitudes for single- and two-photon ionization are obtained using the method of exterior complex scaling to effectively propagate the field-free solutions from the end of the radiation pulse to infinite times. Cross sections are presented for one-and two-photon ionization for both parallel and perpendicular polarization of the photon field, as well as photoelectron angular distributions for two-photon ionization.

Rescigno, Thomas N.; Tao, L.; McCurdy, C.W.

2009-04-20T23:59:59.000Z

374

Theoretical cosmic Type Ia supernova rates  

E-Print Network (OSTI)

The aim of this work is the computation of the cosmic Type Ia supernova rates at very high redshifts (z>2). We adopt various progenitor models in order to predict the number of explosions in different scenarios for galaxy formation and to check whether it is possible to select the best delay time distribution model, on the basis of the available observations of Type Ia supernovae. We also computed the Type Ia supernova rate in typical elliptical galaxies of different initial luminous masses and the total amount of iron produced by Type Ia supernovae in each case. It emerges that: it is not easy to select the best delay time distribution scenario from the observational data and this is because the cosmic star formation rate dominates over the distribution function of the delay times; the monolithic collapse scenario predicts an increasing trend of the SN Ia rate at high redshifts whereas the predicted rate in the hierarchical scheme drops dramatically at high redshift; for the elliptical galaxies we note that the predicted maximum of the Type Ia supernova rate depends on the initial galactic mass. The maximum occurs earlier (at about 0.3 Gyr) in the most massive ellipticals, as a consequence of downsizing in star formation. We find that different delay time distributions predict different relations between the Type Ia supernova rate per unit mass at the present time and the color of the parent galaxies and that bluer ellipticals present higher supernova Type Ia rates at the present time.

R. Valiante; F. Matteucci; S. Recchi; F. Calura

2008-07-15T23:59:59.000Z

375

The Exposure Rate Conversion Factor for Nuclear Fallout  

SciTech Connect

Nuclear fallout is comprised of approximately 2000 radionuclides. About 1000 of these radionuclides are either primary fission products or activated fission products that are created during the burn process. The exposure rate one meter above the surface produced by this complex mixture of radionuclides varies rapidly with time since many of the radionuclides are short-lived and decay numerous times before reaching a stable isotope. As a result, the mixture of radionuclides changes rapidly with time. Using a new code developed at the Lawrence Livermore National Laboratory, the mixture of radionuclides at any given point in time can be calculated. The code also calculates the exposure rate conversion factor (ECF) for all 3864 individual isotopes contained in its database based on the total gamma energy released per decay. Based on the combination of isotope mixture and individual ECFs, the time-dependent variation of the composite exposure rate conversion factor for nuclear fallout can be easily calculated. As example of this new capability, a simple test case corresponding to a 10 kt, uranium-plutonium fuel has been calculated. The results for the time-dependent, composite ECF for this test case are shown in Figure 1. For comparison, we also calculated the composite exposure rate conversion factor using the conversion factors found in Federal Guidance Report No.12 (FGR-12) published by ORNL, which contains the conversion factors for approximately 1000 isotopes. As can be noted from Figure 1, the two functions agree reasonably well at times greater than about 30 minutes. However, they do not agree at early times since FGR-12 does not include all of the short-lived isotopes that are produced in nuclear fallout. It should also be noted that the composite ECF at one hour is 19.7 R/hr per Ci/m{sup 2}. This corresponds to 3148 R/hr per 1 kt per square mile, which agrees reasonably well with the value of 3000 R/hr per 1 kt per square mile as quoted by Glasstone. We have also tabulated the top 50 contributors to the exposure rate at various points in time following a detonation. These major contributors are given in Table 1.

Spriggs, G D

2009-02-11T23:59:59.000Z

376

TIMING APPARATUS  

DOE Patents (OSTI)

The timing device comprises an escapement wheel and pallet, a spring drive to rotate the escapement wheel to a zero position, means to wind the pretensioned spring proportional to the desired signal time, and a cam mechanism to control an electrical signal switch by energizing the switch when the spring has been wound to the desired position, and deenergizing it when it reaches the zero position. This device produces an accurately timed signal variably witain the control of the operator.

Bennett, A.E.; Geisow, J.C.H.

1956-04-17T23:59:59.000Z

377

STARLIB: A Next-Generation Reaction-Rate Library for Nuclear Astrophysics  

E-Print Network (OSTI)

STARLIB is a next-generation, all-purpose nuclear reaction-rate library. For the first time, this library provides the rate probability density at all temperature grid points for convenient implementation in models of stellar phenomena. The recommended rate and its associated uncertainties are also included. Currently, uncertainties are absent from all other rate libraries, and, although estimates have been attempted in previous evaluations and compilations, these are generally not based on rigorous statistical definitions. A common standard for deriving uncertainties is clearly warranted. STARLIB represents a first step in addressing this deficiency by providing a tabular, up-to-date database that supplies not only the rate and its uncertainty but also its distribution. Because a majority of rates are lognormally distributed, this allows the construction of rate probability densities from the columns of STARLIB. This structure is based on a recently suggested Monte Carlo method to calculate reaction rates, where uncertainties are rigorously defined. In STARLIB, experimental rates are supplemented with: (i) theoretical TALYS rates for reactions for which no experimental input is available, and (ii) laboratory and theoretical weak rates. STARLIB includes all types of reactions of astrophysical interest to Z = 83, such as (p,g), (p,a), (a,n), and corresponding reverse rates. Strong rates account for thermal target excitations. Here, we summarize our Monte Carlo formalism, introduce the library, compare methods of correcting rates for stellar environments, and discuss how to implement our library in Monte Carlo nucleosynthesis studies. We also present a method for accessing STARLIB on the Internet and outline updated Monte Carlo-based rates.

A. L. Sallaska; C. Iliadis; A. E. Champagne; S. Goriely; S. Starrfield; F. X. Timmes

2013-04-29T23:59:59.000Z

378

Rate of coal devolatilization in iron and steelmaking processes  

Science Conference Proceedings (OSTI)

The devolatilization of coal particles under ironmaking and steelmaking conditions was studied. A new experimental technique was developed to measure the rates of devolatilization. A unique method was used to prepare coal particles based on thick coal bands rich in a given maceral group. Experiments with these single particles gave good reproducibility. The rates of devolatilization for all coal types from low to high rank coals were measured in the gaseous atmosphere and within the slag phase. Real time x-ray images were taken for high volatile, low volatile and anthracite coals devolatilizing in a molten smelting slag. The rate in terms of percentage devolatilization were relatively independent of coal type and a small function of furnace temperature at high heating rates and temperatures studied. The rates depended on particle size and heating rates. The results were consistent with internal transport controlled processes primarily heat transfer. Furthermore the rates were the same in the gas and slag phase which is consistent with heat transfer control.

Sampaio, R.S.; Rio Doce, C.V. do; Fruehan, R.J.; Ozturk, B. (Carnegie Mellon Univ., Pittsburgh, PA (United States). Center for Iron and Steel Making Research)

1991-01-01T23:59:59.000Z

379

Computerized extrapolation of hydrolysis rate data  

Science Conference Proceedings (OSTI)

The program RATE was developed to aid in the extrapolation and interpretation of hydrolysis rate data to a format that is useful for environmental risk assessment. Hydrolysis data typically are reported in the literature as pseudo-first-order rate constants at the temperature and pH of the reaction medium used to obtain the kinetics information. The utility of RATE lies in its ability to estimate first-order rate constants at other values of temperature and pH and to convert pseudo-first-order rate constants to second-order rate constants. RATE also will calculate the half-life for the overall reaction, including neutral-, base-, and acid-mediated hydrolysis, at any selected temperature and pH. RATE, programmed in FORTRAN, is used to systematically analyze data for entry in FATE, a comprehensive environmental fate constants information system database.

Hamrick, K.J.; Kollig, H.P.; Bartell, B.A.

1992-01-01T23:59:59.000Z

380

Development of a Time Series–Based Methodology for Estimation of Large-Area Soil Wetness over India Using IRS-P4 Microwave Radiometer Data  

Science Conference Proceedings (OSTI)

Soil moisture is a very important boundary parameter in numerical weather prediction at different spatial and temporal scales. Satellite-based microwave radiometric observations are considered to be the best because of their high sensitivity to ...

P. K. Thapliyal; P. K. Pal; M. S. Narayanan; J. Srinivasan

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time based rate" 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

Mutual information rate and bounds for it  

E-Print Network (OSTI)

The amount of information exchanged per unit of time between two nodes in a dynamical network or between two data sets is a powerful concept for analysing complex systems. This quantity, known as the mutual information rate (MIR), is calculated from the mutual information, which is rigorously defined only for random systems. Moreover, the definition of mutual information is based on probabilities of significant events. This work offers a simple alternative way to calculate the MIR in dynamical (deterministic) networks or between two data sets (not fully deterministic), and to calculate its upper and lower bounds without having to calculate probabilities, but rather in terms of well known and well defined quantities in dynamical systems. As possible applications of our bounds, we study the relationship between synchronisation and the exchange of information in a system of two coupled maps and in experimental networks of coupled oscillators.

M. S. Baptista; R. M. Rubinger; E. R. V. Junior; J. C. Sartorelli; U. Parlitz; C. Grebogi

2011-04-18T23:59:59.000Z

382

Data Bias in Rate Transient Analysis of Shale Gas Wells  

E-Print Network (OSTI)

Superposition time functions offer one of the effective ways of handling variable-rate data. However, they can also be biased and misleading the engineer to the wrong diagnosis and eventually to the wrong analysis. Since the superposition time functions involve rate as essential constituent, the superposition time is affected greatly with rate issues. Production data of shale gas wells are usually subjected to operating issues that yield noise and outliers. Whenever the rate data is noisy or contains outliers, it will be hard to distinguish their effects from common regime if the superposition time functions are used as plotting time function on log-log plots. Such deceiving presence of these flow regimes will define erroneous well and reservoir parameters. Based on these results and with the upsurge of energy needs there might be some costly decisions will be taken such as refracting or re-stimulating the well especially in tight formations. In this work, a simple technique is presented in order to rapidly check whether there is data bias on the superposition-time specialized plots or not. The technique is based on evaluating the kernel of the superposition time function of each flow regime for the maximum production time. Whatever beyond the Kernel-Equivalent Maximum Production Time (KEMPT) it is considered as biased data. The hypothesis of this technique is that there is no way to see in the reservoir more than what has been seen. A workflow involving different diagnostic and filtering techniques has been proposed to verify proposed notion. Different synthetic and field examples were used in this study. Once the all problematic issues have been detected and filtered out, it was clear that whatever went beyond the KEMPT is a consequence of these issues. Thus, the proposed KEMPT technique can be relied on in order to detect and filter out the biased data points on superposition-time log-log plots. Both raw and filtered data were analyzed using type-curve matching of linear flow type-curves for calculating the original gas in-place (OGIP). It has been found that biased data yield noticeable reduced OGIP. Such reduction is attributed to the early fictitious onset of boundary dominated flow, where early false detection of the drainage boundaries defines less gas in-place occupied in these boundaries.

Agnia, Ammar Khalifa Mohammed

2012-05-01T23:59:59.000Z

383

Rate Schedule CPP-2  

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

or rate schedule accepted or approved by the Federal Energy Regulatory Commission (FERC) or other regulatory bodies will be passed on to each relevant customer. The FERC's or...

384

Automatic IEEE 802.11 rate control for streaming applications  

E-Print Network (OSTI)

Streaming multimedia content in real-time over a wireless link is a challenging task because of the rapid fluctuations in link conditions that can occur due to movement, interference, and so on. The popular IEEE 802.11 standard includes low-level tuning parameters like the transmission rate. Standard device drivers for today’s wireless products are based on gathering statistics, and consequently, adapt rather slowly to changes in conditions. To meet the strict latency requirements of streaming applications, we designed and implemented an advanced hybrid control algorithm that uses signal-strength (SNR) information to achieve fast responses. Since SNR readings are quite noisy we do not use that information to directly control the rate setting, but rather as a safeguard limiting the range of feasible settings to choose from. We report on real-time experiments involving two laptops equipped with IEEE 802.11a wireless interface cards. The results show that using SNR information greatly enhances responsiveness in comparison to statistics-based rate controllers. Finally, we will present the results of an experiment with realtime video streaming to a moving laptop in an office-like environment. Our hybrid control algorithm effectively prevented many packets losses, thereby achieving a much higher video quality than 1 the statistics based algorithm.

Ivaylo Haratcherev; Jacco Taal; Koen Langendoen; Reginald Lagendijk; Henk Sips

2005-01-01T23:59:59.000Z

385

Timed fast charger  

Science Conference Proceedings (OSTI)

In a charger for rechargeable electrochemical cells, a transformer charging circuit supplies a charging current to the battery at a fast charge rate for a predetermined time followed by a continuous slow charge rate. A normally closed automatic reset thermostat in series with the rectifier diodes in the charging circuit, and thermally coupled to them, opens after a period of time, dependent upon the heat generated by the rectifier diodes and upon the thermal mass of the thermostat and diodes, and terminates the fast charge current. A resistor, shunted across the thermostat and thermally coupled to it, establishes a slow charge rate current path when the thermostat opens. Heat generated in the resistor causes the thermostat to remain open as long as the battery is connected and ac power is supplied to the transformer primary winding.

Mullersman, F.H.

1981-10-27T23:59:59.000Z

386

NSLS User Access | Requesting Beam Time  

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

Requesting Beam Time Requesting Beam Time Use one of the following options depending on your research: General User Proposal General User proposals are peer reviewed for scientific merit by a Proposal Review Panel (PRP). General User proposals compete for beamtime with other General User Proposals based on scientific merit. Once the original proposal and beam time request is reviewed and rated in the PASS System, additional beam time requests can be submitted against the original proposal for its lifetime, a period of up to six cycles (two years). Data taken during experiments associated with a General User proposal is considered to be in the public domain. There is no charge for General User beamtime. Rapid Access Rapid Access proposals are a subset of General User proposals available for

387

Time, Wavelet and Hilbert-Huang Domain Analysis of Signals from Ultrasonic Based Equipment for the Non Destructive Evaluation of Concrete and Brick Masonry Walls  

Science Conference Proceedings (OSTI)

In this paper we compare the effectiveness of the time, wavelet and Hilbert-Huang domain analysis of waveforms from a Non Destructive Test (NDT) equipment. The analysis of the signals from NDT systems is one of the most important activities in the recognition ... Keywords: Hilbert-Huang transform, Magnetostrictive transducers and sensors, Non Destructive Test, Ultrasonic waves, Wavelet transform

Antonino Musolino; Marco Raugi; Mauro Tucci; Florin Turcu

2008-06-01T23:59:59.000Z

388

A Multi-objective Genetic Algorithm for On-chip Real-time Adaptation of a Multi-Carrier based Telecommunications Receiver  

E-Print Network (OSTI)

power estimation method based on an original functional analysis; the power consumption of a whole increasing. One of the major problem due to this increase is the system power consumption. Indeed, the power that the power consumption due to external memory access is more and more important in latest applications [1

Arslan, Tughrul

389

Exchange Rates and Fundamentals  

E-Print Network (OSTI)

We show analytically that in a rational expectations present-value model, an asset price manifests near–random walk behavior if fundamentals are I(1) and the factor for discounting future fundamentals is near one. We argue that this result helps explain the well-known puzzle that fundamental variables such as relative money supplies, outputs, inflation, and interest rates provide little help in predicting changes in floating exchange rates. As well, we show that the data do exhibit a related link suggested by standard models—that the exchange rate helps predict these fundamentals. The implication is that exchange rates and fundamentals are linked in a way that is broadly consistent with asset-pricing models of the exchange rate. I.

Charles Engel; Kenneth D. West

2005-01-01T23:59:59.000Z

390

Stable a-Si:H-Based Multijunction Solar Cells with Guidance from Real-Time Optics: Final Report, 17 July 1998--16 November 2001  

DOE Green Energy (OSTI)

This report describes the new insights obtained into the growth of hydrogenated silicon (Si:H) films via real-time spectroscopic ellipsometry (RTSE) measurements. Evolutionary phase diagrams were expanded to include the effects of different deposition conditions, including rf power, pressure, and temperature. Detailed studies of degradation kinetics in thin films and corresponding solar cells have been carried out. Both p-i-n and n-i-p solar cells that incorporate Si:H i-layers deposited with and without H2-dilution have been studied. For the first time, direct and reliable correlations have been obtained between the light-induced changes in thin-film materials and the degradation of the corresponding solar cells.

Wronski, C. R.; Collins, R. W.; Pearce, J. M.; Koval, R. J.; Ferlauto, A. S.; Ferreira, G. M.; Chen C.

2002-08-01T23:59:59.000Z

391

Essays on exchange rates and electricity demand  

E-Print Network (OSTI)

This thesis examines two important issues in economic development: exchange rates and electricity demand and addresses methodological issues of using time series and panel data analysis to investigate important policy ...

Li, Xiangming, 1966-

1999-01-01T23:59:59.000Z

392

Optical-Fiber-Based, Time-Resolved Photoluminescence Spectrometer for Thin-Film Absorber Characterization and Analysis of TRPL Data for CdS/CdTe Interface: Preprint  

DOE Green Energy (OSTI)

We describe the design of a time resolved photoluminescence (TRPL) spectrometer for rapid semiconductor absorber characterization. Simplicity and flexibility is achieved by using single optical fiber to deliver laser pulses and to collect photoluminescence. We apply TRPL for characterization of CdS/CdTe absorbers after deposition, CdCl2 treatment, Cu doping, and back contact formation. Data suggest this method could be applied in various stages of PV device processing. Finally, we show how to analyze TRPL data for CdS/CdTe absorbers by considering laser light absorption depth and intermixing at CdS/CdTe interface.

Kuciauskas, D.; Duenow, J. N.; Kanevce, A.; Li, J. V.; Young, M. R.; Dippo, P.; Levi, D. H.

2012-06-01T23:59:59.000Z

393

A Study on the Contribution of 12 Key-Factors to the Growth Rates of the Region of the East Macedonia-Thrace EMTH by Using a Neural Network Model  

Science Conference Proceedings (OSTI)

This study gives a new methodological framework regarding the measuring of the contribution of some key-factors on the regional growth rate and forecasting the future development rates, based on Neural Network Models NN Models. It's a serious attempt ... Keywords: East Macedonia, Future Forecasting, Neural Networks NN, Regional Gross Domestic Product, Regional Growth Rate, Time Series

E. Stathakis; M. Hanias; P. Antoniades; L. Magafas; D. Bandekas

2012-01-01T23:59:59.000Z

394

Analytical Improvements in PV Degradation Rate Determination  

DOE Green Energy (OSTI)

As photovoltaic (PV) penetration of the power grid increases, it becomes vital to know how decreased power output may affect cost over time. In order to predict power delivery, the decline or degradation rates must be determined accurately. For non-spectrally corrected data several complete seasonal cycles (typically 3-5 years) are required to obtain reasonably accurate degradation rates. In a rapidly evolving industry such a time span is often unacceptable and the need exists to determine degradation rates accurately in a shorter period of time. Occurrence of outliers and data shifts are two examples of analytical problems leading to greater uncertainty and therefore to longer observation times. In this paper we compare three methodologies of data analysis for robustness in the presence of outliers, data shifts and shorter measurement time periods.

Jordan, D. C.; Kurtz, S. R.

2011-02-01T23:59:59.000Z

395

Time of arrival and power delay profile estimation for IR-UWB systems  

Science Conference Proceedings (OSTI)

In time of arrival (TOA) estimation of received ultra-wideband (UWB) pulses, traditional maximum likelihood (ML) and generalized likelihood estimators become impractical because they require sampling at the Nyquist rate. Sub-Nyquist ML-based TOA estimation ... Keywords: Average power delay profile (APDP), Radio frequency identification (RFID), Source localization, Time of arrival (TOA) estimation, Ultra-wideband (UWB) pulse signals

Fang Shang; Benoit Champagne; Ioannis Psaromiligkos

2013-05-01T23:59:59.000Z

396

OpenEI - rates  

Open Energy Info (EERE)

U.S. Electric Utility U.S. Electric Utility Companies and Rates: Look-up by Zipcode (Feb 2011) http://en.openei.org/datasets/node/899 This dataset, compiled by NREL and Ventyx, provides average residential, commercial and industrial electricity rates by zip code for both investor owned utilities (IOU) and non-investor owned utilities. Note: the file includes average rates for each utility, but not the detailed rate structure data found in the database available via the zip-code look-up feature on the OpenEI Utilities page (http://en.openei.org/wiki/Gateway:Utilities). The data was released by NREL/Ventyx in February 2011.

397

<RatesMiscInfo>  

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

Rates MISCELLANEOUS INFORMATION Power Supply Report June 2013 (53kb pdf) May 2013 (53kb pdf) April 2013 (52kb pdf) March 2013 (54kb pdf) February 2013 (54kb pdf) January 2013 (54kb...

398

Digestion time  

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

Digestion time Digestion time Name: Don Mancosh Location: N/A Country: N/A Date: N/A Question: I have always given the rule of thumb in class that material we eat is with us for about 24 hours before exiting the body. The question arises about the time value of liquids. Getting a big coke prior to a 3 hour drive generally means that there will be a stop along the way. Is there a generalization made about liquids in the body similar to the one for solid food? Replies: A physician would give a better answer, but I hazard this: the only liquids which people consume (deliberately) in significant quantities are water, ethyl alcohol and various oils. Water and alcohol are absorbed on a time scale of seconds to minutes through the mouth, stomach and digestive tract. The oils are huge molecules, so I'd guess like any other greasy food they get absorbed in the upper digestive tract. Some of them, perhaps the longest and most nonpolar, are not absorbed at all --- cf. the old-time remedy of mineral oil for constipation --- so there should be some average time-before-what's-left-is-excreted such as you're looking for, and my (wild) guess is that it would not differ substantially from that for food. You can define an average lifetime in the body for alcohol, since the natural level is zero. Rough guidelines are widespread in the context of drunk driving laws. But this is not really possible for water. One's body is normally full up to the brim with water, and there's no way for the body to distinguish between water molecules recently absorbed and molecules that've been moping around since the Beatles split up. Thus the water entering the toilet bowl after the pit stop is not in general the same water as was in the big coke. If you were to consider for water just the average time between drinking and peeing, it would seem to depend strongly on how well hydrated the body was before the drink, and how much was drunk. During sustained heavy exertion in the sun and dry air one can easily drink a pint of water an hour without peeing at all. On the other hand, if one is willing to drink enough water fast enough, so as to establish a high excess of body water one can pee 8 ounces 15 minutes or less after drinking 8 ounces.

399

Utility Rates | OpenEI Community  

Open Energy Info (EERE)

Utility Rates Utility Rates Home Rmckeel's picture Submitted by Rmckeel(297) Contributor 6 September, 2013 - 14:00 The utility rate database version 1 API is now deprecated API Utility Rates There comes a time in every API version's lifecycle when it needs to be deprecated. OpenEI's utility rate database version 1 API has been in use since the inception of the database in 2010. As Illinois State University has taken a commanding lead of the project and its data curation, we have updated the schema and API to version 2 to present a richer spectrum of utility rate data. Rmckeel's picture Submitted by Rmckeel(297) Contributor 11 June, 2013 - 09:33 Tip for working with approvals on OpenEI EZFeed Utility Rates The "ApprovedRevs" extension is the feature on OpenEI that allows

400

Cat Heart Rate Monitoring  

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

Cat Heart Rate Monitoring Cat Heart Rate Monitoring Name: Shakti Status: student Grade: 9-12 Location: TX Country: USA Date: Summer 2010 Question: What is the best way to find a cat's heart rate using a stethoscope? Because I have tried to hear their heart beat but their purring is all I can hear. If I shouldn't use a stethoscope, then what should I use? Replies: Hi Shakti! If you want to use a stethoscope, the trick is to get your cat to stop purring. Two good ways that I have found to help stop the purring 1. Cover their nose (generally cats don't like this and will stop purring) or 2. Put on the tap to drip or lightly stream water (also, they generally don't like this and will stop purring). Alternatively, you can get their heart rate from feeling their pulse. A good place to try to feel a pulse is right where the leg attaches to the abdomen - in an area called the inguinal region. Now granted there are some heart conditions that will cause an animals pulse and their heart rates don't match up, and it's hard to feel if you have a fat cat, but it's a good place to try if you are really trying to get a heart rate in a healthy kitty!

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401

NIST: A Walk Through Time - World Time Scales  

Science Conference Proceedings (OSTI)

... A Walk Through Time - Home Page ... and technologists recognized the inadequacy of timekeeping based on the motion of the Earth, which fluctuates ...

2010-10-05T23:59:59.000Z

402

Hybrid Rate Control for IEEE 802.11  

E-Print Network (OSTI)

Streaming multimedia content in real-time over a wireless link is a challenging task because of the rapid fluctuations in link conditions that can occur due to movement, interference, and so on. The popular IEEE 802.11 standard includes low-level tuning parameters like the transmission rate. Standard device drivers for today's wireless products are based on gathering statistics, and consequently, adapt rather slowly to changes in conditions. To meet the strict latency requirements of streaming applications, we designed and implemented an advanced control algorithm that uses signal-strength (SNR) information to achieve fast responses. Since SNR readings are quite noisy we do not use that information to directly control the rate setting, but rather as a safeguard limiting the range of feasible settings to choose from. We report on real-time experiments involving two laptops equipped with IEEE 802.11a wireless interface cards. The results show that using SNR information greatly enhances responsiveness in comparison to statistics-based rate controllers.

Ivaylo Haratcherev; Reginald Lagendijk; Koen Langendoen; Henk Sips

2004-01-01T23:59:59.000Z

403

Dose rate visualization of radioisotope thermoelectric generators  

DOE Green Energy (OSTI)

Advanced visualization techniques can be used to investigate gamma ray and neutron dose rates around complex dose rate intensive operations. A method has been developed where thousands of dose points are calculated using the MCNP(Monte Carlo N-Particle) computer code and then displayed to create color contour plots of the dose rate for complex geometries. Once these contour plots are created, they are sequenced together creating an animation to dynamically show how the dose rate changes with changes in the geometry or source over time.

Schwarz, R.A.; Kessler, S.F.; Tomaszewski, T.A.

1995-09-01T23:59:59.000Z

404

Photovoltaic Degradation Rates -- An Analytical Review  

DOE Green Energy (OSTI)

As photovoltaic penetration of the power grid increases, accurate predictions of return on investment require accurate prediction of decreased power output over time. Degradation rates must be known in order to predict power delivery. This article reviews degradation rates of flat-plate terrestrial modules and systems reported in published literature from field testing throughout the last 40 years. Nearly 2000 degradation rates, measured on individual modules or entire systems, have been assembled from the literature, showing a median value of 0.5%/year. The review consists of three parts: a brief historical outline, an analytical summary of degradation rates, and a detailed bibliography partitioned by technology.

Jordan, D. C.; Kurtz, S. R.

2012-06-01T23:59:59.000Z

405

The effect of additives on lime dissolution rates. Final report  

Science Conference Proceedings (OSTI)

Based on the previous years` studies concerning the efficiency of SO{sub 2} removal by spray dryers with high sulfur coal flue gas, the work for year five included investigations of lime dissolution rates at different slaking conditions and with the effect of additives. The prominent additives that have significant effects on lime dissolution rates were tested with the mini pilot spray drying absorber to see their effects on spray drying desulfurization applications. The mechanisms of these additive effects along with the properties of hygroscopic additives have been discussed and incorporated into the spray drying desulfurization model ``SPRAYMOD-M.`` Slaking conditions are very important factors in producing high quality lime slurry in spray drying desulfurization processes. At optimal slaking conditions, the slaked lime particles are very fine (3-5{mu}m) and the slaked lime has high BET surface areas which are beneficial to the desulfurization. The slaked lime dissolution rate experiments in our study are designed to determine how much lime can dissolve in a unit time if the initial lime surface area is kept constant. The purpose of the dissolution rate study for different additives is to find those effective additives that can enhance lime dissolution rates and to investigate the mechanisms of the dissolution rate enhancement properties for these additives. The applications of these additives on spray drying desulfurization are to further verify the theory that dissolution rate is a rate limiting step in the whole spray drying desulfurization process as well as to test the feasibility of these additives on enhancing SO{sub 2} removal in spray dryers.

Khang, S.J.

1996-07-31T23:59:59.000Z

406

Theoretical mass loss rates of cool main-sequence stars  

E-Print Network (OSTI)

We develop a model for the wind properties of cool main-sequence stars, which comprises their wind ram pressures, mass fluxes, and terminal wind velocities. The wind properties are determined through a polytropic magnetised wind model, assuming power laws for the dependence of the thermal and magnetic wind parameters on the stellar rotation rate. We use empirical data to constrain theoretical wind scenarios, which are characterised by different rates of increase of the wind temperature, wind density, and magnetic field strength. Scenarios based on moderate rates of increase yield wind ram pressures in agreement with most empirical constraints, but cannot account for some moderately rotating targets, whose high apparent mass loss rates are inconsistent with observed coronal X-ray and magnetic properties. For fast magnetic rotators, the magneto-centrifugal driving of the outflow can produce terminal wind velocities far in excess of the surface escape velocity. Disregarding this aspect in the analyses of wind ram pressures leads to overestimations of stellar mass loss rates. The predicted mass loss rates of cool main-sequence stars do not exceed about ten times the solar value. Our results are in contrast with previous investigations, which found a strong increase of the stellar mass loss rates with the coronal X-ray flux. Owing to the weaker dependence, we expect the impact of stellar winds on planetary atmospheres to be less severe and the detectability of magnetospheric radio emission to be lower then previously suggested. Considering the rotational evolution of a one solar-mass star, the mass loss rates and the wind ram pressures are highest during the pre-main sequence phase.

V. Holzwarth; M. Jardine

2006-11-14T23:59:59.000Z

407

Trade, Interdependence and Exchange Rates  

E-Print Network (OSTI)

period is 1971-2000. All inflation rates and predictions areof Goods and Real Exchange Rate Fluc- tuations,” mimeo [5]Between Trade and Exchange Rate Volatility,” mimeo [6

Fitzgerald, Doireann

2004-01-01T23:59:59.000Z

408

Exchange Rates, Information, and Crises  

E-Print Network (OSTI)

3 Intervention and Exchange Rate Misalignment 4 Conclusion 5explain the exchange rate determination puzzle? Americanrisk to defend the exchange rate. Universit¨at Trier Working

Fernholz, Ricardo Turrin

2011-01-01T23:59:59.000Z

409

Statistical Evaluation of Travel Time Estimation Based on Data from Freeze-Branded Chinook Salmon on the Snake River, 1982-1990.  

DOE Green Energy (OSTI)

The purpose of this investigation is to assess the strengths and limitations of existing freeze brand recapture data in describing the migratory dynamics of juvenile salmonids in the mainstream, impounded sections of the Snake and Columbia Rivers. With the increased concern over the threatened status of spring and summer chinook salmon in the Snake River drainage, we used representative stocks for these races as our study populations. However, statistical considerations resultant from these analyses apply to other species and drainages as well. This report describes analyses we conducted using information derived from freeze-branded groups. We examined both index production groups released from hatcheries upstream from Lower Granite Dam (1982--1990) and freeze-branded groups used as controls in smolt transportation evaluations conducted by the National Marine Fisheries Service (1986, 1989). The scope of our analysis was limited to describing travel time estimates and derived relationships, as well as reach survival estimates through the mainstem Snake River from Lower Granite to McNary Dam.

Smith, Steven G.; Skalski, J.R.; Giorgi, Albert E.

1993-10-01T23:59:59.000Z

410

BCP Annual Rate Process  

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

2013 BCP Annual Rate Process 2013 BCP Annual Rate Process Informal Process Rate Activity Schedule (doc) Informal Customer Meeting Thursday March 6, 2013 at 10:30 A.M. Conf Rms 3&4 Informal Customer Meeting Presentation (Pdf) PRS Executive Summary (Mar 07, 2013) (Pdf) FY2014 Final Ten Year Operating Plan PRS Executive Summary (PDF) FORM for Foreign Visits (doc) Formal Process Initial Federal Register Notice (pdf) Public Information Forum March 27,2013 at 10:30 A.M. Conf Rms3&4 Customer Meeting Presentation PIF Presentation (PPT) Presentation Details (pdf) Reclamation Fund Status Report PIF PRS Executive Summary (pdf) PIF Transcripts (PDF) Visitor Center Cost Analysis Questions - Responses Public Comment Forum April 10, 2013 at 10:30 A.M. Conf Rms3&4 PCF Transcripts Customer Letters

411

Multiple System Rate Process  

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

DSW Multiple System Transmission Rate Process DSW Multiple System Transmission Rate Process Federal Register Notice Withdrawing Rate Proposal (PDF) Formal Process Extension Federal Register Notice (PDF) Customer Savings Under Various MSTR (XLS) Public Information Forum March 29, 2005 Customer Meeting Overview (Power Point) Customer Meeting Overview (PDF) Customer Meeting Transcript (PDF) Public Comment Forum April 6, 2005 Customer Meeting Transcript (PDF) Response Letter 5-17-05 (PDF) Customer Letters Tonopah ID-5/25/05 (PDF) APS-5/26/05 (PDF) SRP-5/27/05 (PDF) RSLynch-6/1/05 (PDF) KRSaline-6/1/05 (PDF) Formal Process Federal Register Notice (Word) Federal Register Notice (PDF) Brochure (Word) Appendices to Brochure: A B C D E1 E2 F1 F2 GH Public Information Forum July 14, 2004 Customer Meeting Overview (Power Point)

412

Revisions to the SRCC Rating Process for Solar Water Heaters: Preprint  

DOE Green Energy (OSTI)

In the United States, annual performance ratings for solar water heaters are computed with component-based simulation models driven by typical meteorological year weather and specified water draw. Changes in the process are being implemented to enhance credibility through increased transparency and accuracy. Changes to the process include using a graphical rather than text-based model-building tool, performing analytical tests on all components and systems, checking energy balances on every component, loop, and system at every time step, comparing the results to detect outliers and potential errors, and documenting the modeling process in detail. Examples of changes in ratings are shown, along with analytical and comparative testing results.

Burch, J.; Huggins, J.; Long, S.; Thornton, J.

2012-06-01T23:59:59.000Z

413

Rate Schedule CPP-2  

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

be determined based on customer's account status. If the CPP is funded through appropriations, Federal reimbursable, or use of receipts authority, the cost of the CPP is passed...

414

A Survey of Utility Experience with Real Time Pricing  

E-Print Network (OSTI)

Response to Electricity Real-Time Prices: Short Run and Longat the prevailing real time price. Because only marginalService Rate RTP: Real Time Price Rate Experimental Day

Barbose, Galen; Goldman, Charles; Neenan, Bernie

2004-01-01T23:59:59.000Z

415

Achievable Rate and Optimal Physical Layer Rate Allocation in Interference-Free Wireless Networks  

E-Print Network (OSTI)

We analyze the achievable rate in interference-free wireless networks with physical layer fading channels and orthogonal multiple access. As a starting point, the point-to-point channel is considered. We find the optimal physical and network layer rate trade-off which maximizes the achievable overall rate for both a fixed rate transmission scheme and an improved scheme based on multiple virtual users and superposition coding. These initial results are extended to the network setting, where, based on a cut-set formulation, the achievable rate at each node and its upper bound are derived. We propose a distributed optimization algorithm which allows to jointly determine the maximum achievable rate, the optimal physical layer rates on each network link, and an opportunistic back-pressure-type routing strategy on the network layer. This inherently justifies the layered architecture in existing wireless networks. Finally, we show that the proposed layered optimization approach can achieve almost all of the ergodic ...

Cui, Tao; Kliewer, Joerg

2009-01-01T23:59:59.000Z

416

LAP Transmission Rate  

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

LAP Transmission Rate 4.50 4.00 3.82 3.50 3.00 of 2.50 c 0 2.I2 2.68 I 3: 2.00 1.50 1.00 0.50 0.00 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012...

417

Upper Great Plains Rates information  

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

Rates and Repayment Services Rates and Repayment Services Rates 2010 Firm Power Rate (effective January 1, 2010) Rate Adjustments 2010 Firm Power Rate Adjustment 2009 Firm Power Rate Adjustment IS Rate Adjustments Rate Adjustment Process Rate Orders Signed, December 23, 2009 (16kb pdf) Announcements Firm Electric Service Customer Letter - Preliminary Review of Drought Adder Component, June 27, 2013 (74kb pdf) Customer Letter - Final Notice of Drought Adder Component, October 2, 2013 (68kb pdf) Integrated System (IS) Rates 2014 IS Rates Customer Information Meeting Presentation, October 15, 2013 (611kb pdf) Customer Letter - Notification of 2014 Rates, September 13, 2013 (160kb pdf) 2014 Transmission and Ancillary Services Rate Calculation and 2012 Rate True-up Calculation (4.9mb pdf) 2013 IS Rates

418

Time Brightness  

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

Perlmutter, et al., in Thermonuclear Supernovae, NATO ASI, v. 486 (1997) Perlmutter, et al., in Thermonuclear Supernovae, NATO ASI, v. 486 (1997) Cosmology from . . . Time Brightness ... . . . 50-100 Fields Lunar Calendar Scheduled Follow-Up Imaging at Hubble, Cerro Tololo, WIYN, Isaac Newton Scheduled Follow-Up Spectroscopy at Keck Almost 1000 Galaxies per Field RESULT: ~24 Type Ia supernovae discovered while still brightening, at new moon Berkeley Lab Keck WIYN Cerro Tololo Isaac Newton Hubble Strategy We developed a strategy to guarantee a group of supernova discoveries on a certain date. Just after a new moon, we observe some 50 to 100 high-galactic lattitute fields-each containing almost a thousand high-redshift galaxies-in two nights on the Cerro Tololo 4-meter telescope with Tyson & Bernstein's wide-field camera. We return three weeks later to observe the same

419

Finite-Time Singularity Signature of Hyperinflation  

E-Print Network (OSTI)

We present a novel analysis extending the recent work of Mizuno et al. [2002] on the hyperinflations of Germany (1920/1/1-1923/11/1), Hungary (1945/4/30-1946/7/15), Brazil (1969-1994), Israel (1969-1985), Nicaragua (1969-1991), Peru (1969-1990) and Bolivia (1969-1985). On the basis of a generalization of Cagan's model of inflation based on the mechanism of ``inflationary expectation'' or positive feedbacks between realized growth rate and people's expected growth rate, we find that hyperinflations can be characterized by a power law singularity culminating at a critical time $t_c$. Mizuno et al.'s double-exponential function can be seen as a discrete time-step approximation of our more general nonlinear ODE formulation of the price dynamics which exhibits a finite-time singular behavior. This extension of Cagan's model, which makes natural the appearance of a critical time $t_c$, has the advantage of providing a well-defined end of the clearly unsustainable hyperinflation regime. We find an excellent and reliable agreement between theory and data for Germany, Hungary, Peru and Bolivia. For Brazil, Israel and Nicaragua, the super-exponential growth seems to be already contaminated significantly by the existence of a cross-over to a stationary regime.

D. Sornette; H. Takayasu; W. -X. Zhou

2003-01-06T23:59:59.000Z

420

All about Dagong Global Credit Rating Co. | The Enterprise Post  

U.S. Energy Information Administration (EIA)

China’s Dagong Global Credit Rating Co. may cut the U.S.’s sovereign rating for the second time since August if the world’s biggest economy conducts ...

Note: This page contains sample records for the topic "time based rate" 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

Access Rate Control System | Y-12 National Security Complex  

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

Access Rate Control System Access Rate Control System The mp4 video format is not supported by this browser. Download video Captions: On Time: 4:03 min Developed to support...

422

Adjusted Growth Rates*  

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

Jan. '99 to Feb. '99: -1.7% Feb. '98 to Feb. '99: +19.8% YTD '98 to YTD '99: +15.0% 4,100 4,400 4,700 5,000 5,300 5,600 5,900 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons U.S. Distillate Fuel Sales 2011 2012 2013 Adjusted Growth Rates* Jul '13 to Aug '13: 2.5% Aug '12 to Aug '13: -1.3% YTD '12 to YTD '13: 1.5% 300 400 500 600 700 800 900 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons U.S. Residual Fuel Sales 2011 2012 2013 Adjusted Growth Rates* Jul '13 to Aug '13: -0.8%

423

Rail Coal Transportation Rates  

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

reports reports Coal Transportation Rates to the Electric Power Sector With Data through 2010 | Release Date: November 16, 2012 | Next Release Date: December 2013 | Correction Previous editions Year: 2011 2004 Go Figure 1. Deliveries from major coal basins to electric power plants by rail, 2010 Background In this latest release of Coal Transportation Rates to the Electric Power Sector, the U.S. Energy Information Administration (EIA) significantly expands upon prior versions of this report with the incorporation of new EIA survey data. Figure 1. Percent of total U.S. rail shipments represented in data figure data Previously, EIA relied solely on data from the U.S. Surface Transportation Board (STB), specifically their confidential Carload Waybill Sample. While valuable, due to the statistical nature of the Waybill data,

424

Adjusted Growth Rates* Jan.  

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

Adjusted Adjusted Growth Rates* Jan. '99 to Feb. '99: -1.7% Feb. '98 to Feb. '99: +19.8% YTD '98 to YTD '99: +15.0% U.S. Distillate Fuel Sales 3,000 3,500 4,000 4,500 5,000 5,500 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1998 1999 2000 Adjusted Growth Rates* Dec '99 to Jan '00: -7.4% Jan '99 to Jan '00: -0.1% YTD '99 to YTD '00: -0.1% U.S. Motor Gasoline Sales 8,000 9,000 10,000 11,000 12,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1998 1999 2000 Adjusted Growth Rates* Dec '99 to Jan '00: -16.8% Jan '99 to Jan '00: -3.2% YTD '99 to YTD '00: -3.2% U.S. Kerosene-Type Jet Fuel Sales 1,500 1,600 1,700 1,800 1,900 2,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1998 1999 2000 Adjusted Growth Rates* Dec '99 to Jan '00: -9.3% Jan '99 to Jan '00: +3.5% YTD '99 to YTD '00: +3.5% U.S. Propane Sales 600 800 1,000 1,200 1,400 1,600 1,800 Jan Feb Mar Apr May Jun Jul

425

Adjusted Growth Rates*  

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

July '99 to Aug. '99: +4.7% July '99 to Aug. '99: +4.7% Aug. '98 to Aug. '99: +1.3% YTD '98 to YTD '99: +4.7% U.S. Motor Gasoline Sales 8,000 9,000 10,000 11,000 12,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* July '99 to Aug. '99: -1.9% Aug. '98 to Aug. '99: -0.4% YTD '98 to YTD '99: +0.9% U.S. Kerosene-Type Jet Fuel Sales 1,500 1,600 1,700 1,800 1,900 2,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* July '99 to Aug. '99: -0.1% Aug. '98 to Aug. '99: -1.4% YTD '98 to YTD '99: -0.7% U.S. Propane Sales 600 800 1,000 1,200 1,400 1,600 1,800 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* July '99 to Aug. '99: +22.3% Aug. '98 to Aug. '99: +21.1%

426

Adjusted Growth Rates*  

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

Aug '99 to Sep '99: +4.9% Aug '99 to Sep '99: +4.9% Sep '98 to Sep '99: +4.7% YTD '98 to YTD '99: +4.7% U.S. Motor Gasoline Sales 8,000 9,000 10,000 11,000 12,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* Aug '99 to Sep '99: -2.4% Sep '98 to Sep '99: +0.4% YTD '98 to YTD '99: +1.3% U.S. Kerosene-Type Jet Fuel Sales 1,500 1,600 1,700 1,800 1,900 2,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* Aug '99 to Sep '99: -2.1% Sep '98 to Sep '99: +4.6% YTD '98 to YTD '99: 0.0% U.S. Propane Sales 600 800 1,000 1,200 1,400 1,600 1,800 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* Aug '99 to Sep '99: +7.3% Sep '98 to Sep '99: +8.4% YTD '98 to YTD '99: +8.3%

427

Adjusted Growth Rates*  

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

Oct '99 to Nov '99: +0.1% Oct '99 to Nov '99: +0.1% Nov '98 to Nov '99: +5.5% YTD '98 to YTD '99: +4.5% U.S. Motor Gasoline Sales 8,000 9,000 10,000 11,000 12,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* Oct '99 to Nov '99: -0.7% Nov '98 to Nov '99: +1.7% YTD '98 to YTD '99: +1.1% U.S. Kerosene-Type Jet Fuel Sales 1,500 1,600 1,700 1,800 1,900 2,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* Oct '99 to Nov '99: +2.5% Nov '98 to Nov '99: +6.0% YTD '98 to YTD '99: +0.8% U.S. Propane Sales 600 800 1,000 1,200 1,400 1,600 1,800 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* Oct '99 to Nov '99: +9.7% Nov '98 to Nov '99: +2.2% YTD '98 to YTD '99: +6.2%

428

Adjusted Growth Rates*  

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

Sep '99 to Oct '99: +3.9% Sep '99 to Oct '99: +3.9% Oct '98 to Oct '99: +2.3% YTD '98 to YTD '99: +4.4% U.S. Motor Gasoline Sales 8,000 9,000 10,000 11,000 12,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* Sep '99 to Oct '99: -0.2% Oct '98 to Oct '99: -0.9% YTD '98 to YTD '99: +1.0% U.S. Kerosene-Type Jet Fuel Sales 1,500 1,600 1,700 1,800 1,900 2,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* Sep '99 to Oct '99: -1.9% Oct '98 to Oct '99: -0.7% YTD '98 to YTD '99: +0.4% U.S. Propane Sales 600 800 1,000 1,200 1,400 1,600 1,800 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* Sep '99 to Oct '99: -2.1% Oct '98 to Oct '99: -6.4% YTD '98 to YTD '99: +6.6%

429

Adjusted Growth Rates*  

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

June '99 to July '99: -5.4% June '99 to July '99: -5.4% July '98 to July '99: +3.3% YTD '98 to YTD '99: +6.3% U.S. Motor Gasoline Sales 8,000 9,000 10,000 11,000 12,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* June '99 to July '99: -0.5% July '98 to July '99: -0.4% YTD '98 to YTD '99: +1.1% U.S. Kerosene-Type Jet Fuel Sales 1,500 1,600 1,700 1,800 1,900 2,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* June '99 to July '99: +0.5% July '98 to July '99: +1.0% YTD '98 to YTD '99: -0.3% U.S. Propane Sales 600 800 1,000 1,200 1,400 1,600 1,800 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* June '99 to July '99: +1.5% July '98 to July '99: +10.2% YTD '98 to YTD '99: +7.2%

430

Adjusted Growth Rates*  

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

Nov '99 to Dec '99: +5.3% Nov '99 to Dec '99: +5.3% Dec '98 to Dec '99: +8.7% YTD '98 to YTD '99: +5.0% U.S. Motor Gasoline Sales 8,000 9,000 10,000 11,000 12,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* Nov '99 to Dec '99: +6.0% Dec '98 to Dec '99: +4.5% YTD '98 to YTD '99: +1.3% U.S. Kerosene-Type Jet Fuel Sales 1,500 1,600 1,700 1,800 1,900 2,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* Nov '99 to Dec '99: +2.4% Dec '98 to Dec '99: +3.0% YTD '98 to YTD '99: +0.9% U.S. Propane Sales 600 800 1,000 1,200 1,400 1,600 1,800 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Millions of Gallons 1997 1998 1999 Adjusted Growth Rates* Nov '99 to Dec '99: +32.3% Dec '98 to Dec '99: +2.0% YTD '98 to YTD '99: +5.5%

431

Growth Rates of Global Energy Systems and Future Outlooks  

Science Conference Proceedings (OSTI)

The world is interconnected and powered by a number of global energy systems using fossil, nuclear, or renewable energy. This study reviews historical time series of energy production and growth for various energy sources. It compiles a theoretical and empirical foundation for understanding the behaviour underlying global energy systems' growth. The most extreme growth rates are found in fossil fuels. The presence of scaling behaviour, i.e. proportionality between growth rate and size, is established. The findings are used to investigate the consistency of several long-range scenarios expecting rapid growth for future energy systems. The validity of such projections is questioned, based on past experience. Finally, it is found that even if new energy systems undergo a rapid 'oil boom'-development-i.e. they mimic the most extreme historical events-their contribution to global energy supply by 2050 will be marginal.

Hoeoek, Mikael, E-mail: Mikael.Hook@fysast.uu.se [Uppsala University, Department of Physics and Astronomy, Global Energy Systems (Sweden); Li, Junchen [China University of Petroleum-Beijing, School of Business Administration (China); Johansson, Kersti [Uppsala University, Department of Physics and Astronomy, Global Energy Systems (Sweden); Snowden, Simon [University of Liverpool, Management School (United Kingdom)

2012-03-15T23:59:59.000Z

432

Estimating the Accuracy of Polarimetric Radar–Based Retrievals of Drop-Size Distribution Parameters and Rain Rate: An Application of Error Variance Separation Using Radar-Derived Spatial Correlations  

Science Conference Proceedings (OSTI)

The accuracy of retrieving the two drop size distribution (DSD) parameters, median volume diameter (D0), and normalized intercept parameter (NW), as well as rain rate (R), from polarimetric C-band radar data obtained during a cool-season, long-...

M. Thurai; V. N. Bringi; L. D. Carey; P. Gatlin; E. Schultz; W. A. Petersen

2012-06-01T23:59:59.000Z

433

Rate Adjustments and Public Involvement  

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

Rate Adjustments and Public Involvement Documents Rate Adjustments and Public Involvement Documents CRSP Transmission 9/16/2013 WAPA-161 FRN, CRSP transmission and ancillary services rates extension Letter announcing two-year extension to CRSP transmission and ancillary services rates Letter announcing revised CRSP transmission rates for FY 2014 Accompanying calculation table for FY 2014 CRSP transmission rate letter Letter announcing revised CRSP transmission rates for FY 2013 Letter announcing revised CRSP transmission rates for FY 2012 Letter announcing revised CRSP transmission rates for FY 2011 Letter announcing revised CRSP transmission rates for FY 2010 SLCA/IP 9/16/2013 WAPA-161 FRN, SLCA/IP firm power rate extension Letter announcing two-year extension to SLCA/IP firm power rate SLCA/IP Tentative Rate Adjustment Schedule

434

A Rate Equation for the Nocturnal Boundary-Layer Height  

Science Conference Proceedings (OSTI)

A rate equation is derived which describes the development of the boundary-layer height under stable conditions as a function of time.

F. T. M. Nieuwstadt; H. Tennekes

1981-07-01T23:59:59.000Z

435

'Dead Time' Limits Quantum Cryptography Speeds  

Science Conference Proceedings (OSTI)

... Not only does dead time limit the transmission rate of a message ... effects and paralyzability in high-speed quantum key distribution, New Journal of ...

2012-06-08T23:59:59.000Z

436

Utility Rate | OpenEI Community  

Open Energy Info (EERE)

Utility Rate Utility Rate Home > Features > Groups Content Group Activity By term Q & A Feeds Content type Blog entry Discussion Document Event Poll Question Keywords Author Apply Ewilson FYI, OpenEI now accommodates t... Posted by: Ewilson 20 Sep 2013 - 11:58 99thin Very useful information. Thank... Posted by: 99thin 9 Sep 2013 - 00:19 Rmckeel The utility rate database version 1 API is now deprecated Posted by: Rmckeel 6 Sep 2013 - 14:00 There comes a time in every API version's lifecycle when it needs to be deprecated. OpenEI's utility rate database version 1 API has been in use since the inception of the database in 2010. As... Tags: API, Utility Rates NickL Glad I could help get you on t... Posted by: NickL 4 Sep 2013 - 07:41 Glad I could help get you on the right track Myles. There is not as simple

437

OpenEI Community - Utility Rates  

Open Energy Info (EERE)

The utility rate The utility rate database version 1 API is now deprecated http://en.openei.org/community/blog/utility-rate-database-version-1-api-now-deprecated There comes a time in every API version's lifecycle when it needs to be deprecated.OpenEI's utility rate database version 1 API has been in use since the inception of the database in 2010.  As Illinois State University has taken a commanding lead of the project and its data curation, we have updated the schema and API to version 2 to present a richer spectrum of utility rate data.

438

Rating the energy performance of buildings  

SciTech Connect

In order to succeed in developing a more sustainable society, buildings will need to be continuously improved. This paper discusses how to rate the energy performance of buildings. A brief review of recent approaches to energy rating is presented. It illustrates that there is no single correct or wrong concept, but one needs to be aware of the relative impact of the strategies. Different strategies of setting energy efficiency standards are discussed and the advantages of the minimum life cycle cost are shown. Indicators for building energy rating based on simulations, aggregated statistics and expert knowledge are discussed and illustrated in order to demonstrate strengths and weaknesses of each approach. In addition, the importance of considering the level of amenities offered is presented. Attributes of a rating procedure based on three elements, flexible enough for recognizing different strategies to achieve energy conservation, is proposed.

Olofsson, Thomas; Meier, Alan; Lamberts, Roberto

2004-12-01T23:59:59.000Z

439

Estimating the Influence of Evaporation and Moisture-Flux Convergence upon Seasonal Precipitation Rates. Part II: An Analysis for North America Based upon the NCEP–DOE Reanalysis II Model  

Science Conference Proceedings (OSTI)

In this paper, a diagnostic metric—termed the local-convergence ratio—is used to analyze the contribution of evaporation and atmospheric moisture-flux convergence to model-based estimates of climatological precipitation over the North American ...

Bruce T. Anderson; Alex C. Ruane; John O. Roads; Masao Kanamitsu

2009-08-01T23:59:59.000Z

440

Packet-Based Power Allocation for Forward Link Data Traffic  

E-Print Network (OSTI)

the time- averaged utility rate, subject to a constraint onillustrate the achievable utility rate and power allocationthe time-average utility rate (i.e. , total accumulated

Jordan, Scott

2007-01-01T23:59:59.000Z

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


441

Heart Rate Variability Analysis Using Threshold of Wavelet Package Coefficients  

E-Print Network (OSTI)

In this paper, a new efficient feature extraction method based on the adaptive threshold of wavelet package coefficients is presented. This paper especially deals with the assessment of autonomic nervous system using the background variation of the signal Heart Rate Variability HRV extracted from the wavelet package coefficients. The application of a wavelet package transform allows us to obtain a time-frequency representation of the signal, which provides better insight in the frequency distribution of the signal with time. A 6 level decomposition of HRV was achieved with db4 as mother wavelet, and the above two bands LF and HF were combined in 12 specialized frequencies sub-bands obtained in wavelet package transform. Features extracted from these coefficients can efficiently represent the characteristics of the original signal. ANOVA statistical test is used for the evaluation of proposed algorithm.

Kheder, G; Massoued, M Ben; Samet, M

2009-01-01T23:59:59.000Z

442

Home Energy Ratings and Building Performance  

E-Print Network (OSTI)

This paper provides an overview of the Home Energy Rating System (HERS). A short summary of the origination and history of the HERS system will lead to a more detailed description of the inspection and testing protocol. The HERS rating provides an accepted method to determine home efficiency based on standards developed and overseen by the Residential Energy Services Network (RESNET), a not-for-profit corporation. The paper will discuss the effect of various building systems and effects of local climate as they affect the rating score of a proposed or completed structure. The rating is used to determine the most cost effective mechanical systems, building envelope design including window and door types, effect of various roofing materials and radiant barriers. The paper will conclude by comparing specifics of an actual report to the construction characteristics of a home as they relate to the HERS Rating and the result.

Gardner, J.C.

2008-12-01T23:59:59.000Z

443

A Climatological Model for 1-min Precipitation Rates  

Science Conference Proceedings (OSTI)

A model for estimating mean monthly total time occurrence for 1-min precipitation rates from monthly climatological variables has been developed. The model has two components: an estimation algorithm for the mean monthly percentage of time in ...

Paul Tattelman; Kevin P. Larson; Andrew J. Mazzella Jr.

1995-05-01T23:59:59.000Z

444

On the Effectiveness of Rate Limiting Mechanisms  

E-Print Network (OSTI)

One class of worm defense techniques that received attention of late is to “rate limit ” outbound traffic to contain fast spreading worms. Several proposals of rate limiting techniques have appeared in the literature, each with a different take on the impetus behind rate limiting. This paper presents an empirical analysis on different rate limiting schemes using real traffic and attack traces from a sizable network. In the analysis we isolate and investigate the impact of the critical parameters for each scheme and seek to understand how these parameters might be set in realistic network settings. Analysis shows that using DNS-based rate limiting has substantially lower error rates than schemes based on other traffic statistics. The empirical analysis additionally brings to light a number of issues with respect to rate limiting in practice. We explore the impact of these issues in the context of general worm containment. Acknowledgments: We thank the members and companies of the PDL Consortium for their support. This work was partially supported by the National Science Foundation under Grant No. CNS-0433540 and ANI-0326472.

Cynthia Wong; Stan Bielski; Ahren Studer; Chenxi Wang

2005-01-01T23:59:59.000Z

445

Survey of innovative rates, 1991  

SciTech Connect

Current innovative rate data from 135 major utilities throughout the United States were gathered and analyzed. Over 1000 innovative rates that were in use by the utilities in 1990 and 1991 were identified, abstracted and entered into a database. Survey results indicate that over 616 million MWh were sold to the nearly five million customers using the innovative rates offered. From an annual sales perspective, the most widely used rates are demand-side management rates -- rates intended to change customer energy use -- and rates that are market-driven.'' The survey identified 525 demand-side management rates serving our four million customers with reported sales of approximately 520 million MWh. These rates serve over 80% of the total innovative rate customers and account for 84% of the total MWh sales. Also important in terms of MWh sales they represent are market-driven rates, which accounted for sales of 48 million MWh in 1990. Both demand-side management and market-driven rates show a 20% customer growth rate between 1988 and 1990. Other innovative rates examined in the survey included: prepaid service; load retention incentive rates; technology specific rates; and those rates related expressly to non-utility generators -- namely buy-back and standby rates.

White, L.J.; Wakefield, R.A.; McVicker, C.M.

1992-04-01T23:59:59.000Z

446

Survey of innovative rates, 1991  

Science Conference Proceedings (OSTI)

Current innovative rate data from 135 major utilities throughout the United States were gathered and analyzed. Over 1000 innovative rates that were in use by the utilities in 1990 and 1991 were identified, abstracted and entered into a database. Survey results indicate that over 616 million MWh were sold to the nearly five million customers using the innovative rates offered. From an annual sales perspective, the most widely used rates are demand-side management rates -- rates intended to change customer energy use -- and rates that are market-driven.'' The survey identified 525 demand-side management rates serving our four million customers with reported sales of approximately 520 million MWh. These rates serve over 80% of the total innovative rate customers and account for 84% of the total MWh sales. Also important in terms of the MWh sales they represent are market-driven rates, which accounted for sales of 48 million MWh in 1990. Both demand-side management and market-driven rates show a 20% customer growth rate between 1988 and 1990. Other innovative rates examined in the survey included: prepaid service; load retention incentive rates; technology specific rates; and those rates related expressly to non-utility generators -- namely buy-back and standby rates.

White, L.J.; Wakefield, R.A.; McVicker, C.M.

1992-04-01T23:59:59.000Z

447

The Impact of Rate Design and Net Metering on the Bill Savings from Distributed PV for Residential Customers in California  

E-Print Network (OSTI)

details on the residential electricity rates offered by PG&Eis based on the residential retail electricity rates and net

Darghouth, Naim R.

2012-01-01T23:59:59.000Z

448

In-State Contract Vehicle Rental Rates (State Motor Pool Rental Contract for Business Travel)  

E-Print Network (OSTI)

with a full tank of gas. · Receipts are required to be reimbursed. · Students shall not be authorized to drive/Damage Waiver & 1M Liability Coverage Insurance. · Weekly rates are calculated at 5.5 times the Daily rate. · Monthly rates will be calculated at 20 times the Daily rate. · ½ day rates of 4 hours or less

Harms, Kyle E.

449

In-State Contract Vehicle Rental Rates (State Motor Pool Rental Contract for Business Travel)  

E-Print Network (OSTI)

with a full tank of gas. · Itemized receipts are required to be reimbursed. · Non-employee students/Damage Waiver & 1M Liability Coverage Insurance. · Weekly rates are calculated at 5.5 times the Daily rate. · Monthly rates will be calculated at 20 times the Daily rate. · ½ day rates of 4 hours or less

Harms, Kyle E.

450

Reaction Mechanism and Reaction Rate of Sn Evaporation from ...  

Science Conference Proceedings (OSTI)

In the present study, it was elucidated that, under the chemical reaction rate ... Electricity-independent Generation of Si Based on the Use of Rice Husk: A ...

451

Austin Energy - Value of Solar Residential Rate (Texas) | Open...  

Open Energy Info (EERE)

month. The Value of Solar rate is based upon several factors* including: loss savings, energy savings, generation capacity savings, fuel price hedge value, transmission and...

452

Online biomass and specific growth rate estimation aimed to control of a chemostat microbial cultivation accounting for the memory effects  

Science Conference Proceedings (OSTI)

A general chemostat microbial cultivation model accounting for the memory effects (in two modifications - µ-type and S-type) is used for biomass and growth rate estimation, based on measurements of the substrate concentration. The influence ... Keywords: Kalman filtering method, chemostat cultivation, memory (time delay) effects

Trayana Patarinska; Silvia Popova

2003-06-01T23:59:59.000Z

453

Rate-decline Relations for Unconventional Reservoirs and Development of Parametric Correlations for Estimation of Reservoir Properties  

E-Print Network (OSTI)

Time-rate analysis and time-rate-pressure analysis methods are available to estimate reserves and study flow performance of wells in unconventional gas reservoirs. However, these tools are often incorrectly used or the analysis can become difficult because of the complex nature of the reservoir system. Conventional methods (e.g., Arps' time-rate relations) are often used incorrectly to estimate reserves from such reservoirs. It was only recently that a serious study was conducted to outline the limitations of these relations and to set guidelines for their correct application. New time-rate relations, particularly the Duong and logistic growth model, were introduced to estimate reserves and forecast production from unconventional reservoirs. These new models are being used with limited understanding of their characteristics and limitations. Moreover, well performance analyses using analytical/semi-analytical solutions (time-rate-pressure) are often complicated from non-uniqueness that arises when estimating well/formation properties. In this work, we present a detailed study of the Duong model and logistic growth model to investigate the behaviors and limitations of these models when analyzing production data from unconventional reservoirs. We consider production data generated from numerical simulation cases and data obtained from unconventional gas reservoirs to study the quality of match to specific flow regimes and compare accuracy of the reserve estimates. We use the power-law exponential model (PLE), which has been shown to model transient, transition and boundary-dominated flow regimes reliably, as a benchmark to study performance of Duong and logistic growth models. Moreover, we use the "continuous EUR" approach to compare these models during reserve estimation. Finally, we develop four new time-rate relations, based on characteristics of the time-rate data on diagnostic plots. Using diagnostic plots we show that the new time-rate relations provide a quality match to the production data across all flow regimes, leading to a reliable reserve estimate. In a preliminary study, we integrated time-rate model parameters with fundamental reservoir properties (i.e., fracture conductivity (Fc) and 30 year EUR (EUR30yr)), by studying 15 numerical simulation cases to yield parametric correlations. We have demonstrated a methodology to integrate time-rate model parameters and reservoir properties. This method avoids the non-uniqueness issues often associated with model-based production data analysis. This study provides theoretical basis for further demonstration of the methodology using field cases.

Askabe, Yohanes 1985-

2012-12-01T23:59:59.000Z

454

Chemistry Resolved Kinetic Flow Modeling of TATB Based Explosives  

SciTech Connect

Detonation waves in insensitive, TATB based explosives are believed to have multi-time scale regimes. The initial burn rate of such explosives has a sub-microsecond time scale. However, significant late-time slow release in energy is believed to occur due to diffusion limited growth of carbon. In the intermediate time scale concentrations of product species likely change from being in equilibrium to being kinetic rate controlled. They use the thermo-chemical code CHEETAH linked to an ALE hydrodynamics code to model detonations. They term their model chemistry resolved kinetic flow as CHEETAH tracks the time dependent concentrations of individual species in the detonation wave and calculates EOS values based on the concentrations. A HE-validation suite of model simulations compared to experiments at ambient, hot, and cold temperatures has been developed. They present here a new rate model and comparison with experimental data.

Vitello, P A; Fried, L E; Howard, W M; Levesque, G; Souers, P C

2011-07-21T23:59:59.000Z

455

Nonlinear Time-Reversal of Classical Waves: Experiment and Model  

E-Print Network (OSTI)

We consider time-reversal of electromagnetic waves in a closed, wave-chaotic system containing a discrete, passive, harmonic-generating nonlinearity. An experimental system is constructed as a time-reversal mirror, in which excitations generated by the nonlinearity are gathered, time-reversed, transmitted, and directed exclusively to the location of the nonlinearity. Here we show that such nonlinear objects can be purely passive (as opposed to the active nonlinearities used in previous work), and develop a high-rate secure communication system based on nonlinear time-reversal. A model of the experimental system is developed, using a star-graph network of transmission lines, with one of the lines terminated by a model diode. The model simulates time-reversal of linear and nonlinear signals, demonstrates features seen in the experimental system, and supports our interpretation of the experimental results.

Matthew Frazier; Biniyam Taddese; Bo Xiao; Thomas Antonsen; Edward Ott; Steven M. Anlage

2013-08-15T23:59:59.000Z

456

Estimating stress heterogeneity from aftershock rate  

E-Print Network (OSTI)

We estimate the rate of aftershocks triggered by a heterogeneous stress change, using the rate-and-state model of Dieterich [1994]. We show than an exponential stress distribution P(\\tau)~ exp(-\\tau/\\tau_0) gives an Omori law decay of aftershocks with time ~1/t^p, with an exponent p=1-A\\sigma_n/\\tau_0, where A is a parameter of the rate-and-state friction law, and \\sigma_n the normal stress. Omori exponent p thus decreases if the stress "heterogeneity" \\tau_0 decreases. We also invert the stress distribution P(\\tau) from the seismicity rate R(t), assuming that the stress does not change with time. We apply this method to a synthetic stress map, using the (modified) scale invariant "k^2" slip model [Herrero and Bernard, 1994]. We generate synthetic aftershock catalogs from this stress change. The seismicity rate on the rupture area shows a huge increase at short times, even if the stress decreases on average. This stochastic slip model gives a Gaussian stress distribution, but nevertheless produces an aftersho...

Helmstetter, A; Helmstetter, Agnes; Shaw, Bruce E.

2005-01-01T23:59:59.000Z

457

Sodium tetraphenylborate solubility and dissolution rates  

DOE Green Energy (OSTI)

The rate of solid sodium tetraphenylborate (NaTPB) dissolution in In-Tank Precipitation salt solutions has been experimentally determined. The data indicates that the dissolution rate of solid NaTPB is a minor contributor the lag time experienced in the 1983 Salt Decontamination Demonstration Test and should not be considered as the rate determining step. Current analytical models for predicting the time to reach the composite lower flammability limit assume that the lag time is not more than 6 hours, and the data supports this assumption (i.e., dissolution by itself requires much less than 6 hours). The data suggests that another step--such as mass transport, the reaction of a benzene precursor or the mixing behavior--is the rate determining factor for benzene release to the vapor space in Tank 48H. In addition, preliminary results from this program show that the degree of agitation employed is not a significant parameter in determining the rate of NaTPB dissolution. As a result of this study, an improved equation for predicting equilibrium tetraphenylborate solubility with respect to temperature and sodium ion concentration has been determined.

Barnes, M.J.; Peterson, R.A.; Swingle, R.F.; Reeves, C.T.

1995-12-31T23:59:59.000Z

458

Estimation of Mean Rain Rate through Censoring  

Science Conference Proceedings (OSTI)

A mixed lognormal distribution is fit to rain-rate data to estimate the space–time average. To mitigate problems associated with biased data, data below a minimum and above a maximum threshold are treated as if they are at the respective ...

Donald Martin

1999-06-01T23:59:59.000Z

459

User manual for Timed-CSP Simulator  

E-Print Network (OSTI)

Timed Csp Simulator is based on the presentation of Timed Csp in [4]. For a brief discussion of the tool architecture see [1, 2]. The semantical questions regarding simulating Timed Csp are discussed in [3].

Hoang Nga Nguyen; Markus Roggenbach

2012-01-01T23:59:59.000Z

460

Real time estimation of Bayesian networks  

Science Conference Proceedings (OSTI)

For real time evaluation of a Bayesian network when there is not sufficient time to obtain an exact solution, a guaranteed response time, approximate solution is required. It is shown that non traditional methods utilizing estimators based on an archive ...

Robert L. Welch

1996-08-01T23:59:59.000Z

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461

Incident detection using the Standard Normal Deviate model and travel time information from probe vehicles  

E-Print Network (OSTI)

One application of travel time information explored in this thesis is freeway incident detection. It is vital to develop reliable methods for automatically detecting incidents to facilitate the quick response and removal of incidents before they cause breakdowns in traffic flow. The use of real-time travel time data to monitor freeway conditions has the advantages over conventional loop detectors of taking into account the dynamic, longitudinal nature of traffic flow and requiring data from only a portion of the traffic stream. This study employed the Standard Normal Deviate (SND) Model to test the feasibility of using travel time data to detect lane blocking incidents. The fundamental concept of the SND Model was based on the comparison of real-time travel time data to historical travel time data for given freeway segments during specified times. The travel time and incident reports used were collected through the Real-Time Traffic Information System (RTTIS) in the north freeway corridor of Houston, Texas using probe vehicles equipped with cellular telephones. The data were compiled on 39 freeway links from October 1991 through August 1992 on weekdays during morning and afternoon data collection periods. The results of incident detection tests, applying the SND Model to incident and travel time me data from the North Freeway, indicated high successful incident detection rates. However, high false alarm rates also resulted from the SND Model test applications. An optimum SND value of 2.0 was observed for the North Freeway test data. At this value the SND tests produced successful incident detection rates of 70 percent and higher during both the morning and afternoon periods. False alarm rates were also 70 percent. The best results were achieved on those freeway sections where the most incident and travel time data had been collected. The overall results of the incident detection tests on the North Freeway demonstrated that the SND Model was a feasible incident detection algorithm, but required an extensive historical travel time data base.

Mountain, Christopher Eugene

1993-01-01T23:59:59.000Z

462

EPA Fuel Economy Ratings  

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

Current Window Sticker Current Window Sticker The U.S. Environmental Protection Agency (EPA) and the National Highway Traffic Safety Administration (NHTSA) recently redesigned and enhanced the window sticker that appears on new vehicles. The new Fuel Economy and Environment Label will be mandatory on all new vehicles beginning with the 2013 model year. For the 2012 model year, manufacturers can use the new window sticker or the older window sticker shown below. Roll over the highlighted elements on the label below to learn more about EPA's current fuel economy label. EPA's Current Fuel Economy Label EPA's New Fuel Economy Label Estimated Annual Fuel Cost: $2,039 based on 15,000 mile at $2.80 per gallon Your fuel cost may differ depending on annual miles and fuel prices. Combined Fuel Economy for this Vehicle: 21 MPG, Range for all SUVs: 10-31

463

On-site Housing Rates | Staff Services  

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

Rates Rates Effective February 1, 2013 Rates for Occupancy < 30-Days Guest House* Single/Double: US $105.00/day Housekeeping service is provided on all working days. *Alternatives to the Guest House - When family-type accommodations are assigned to temporary or transient personnel, Guest House rates as set forth above will apply. The total will not exceed one months' rent for a unit occupied for 30 days or less. When such assignment is necessary due to lack of adequate Guest House accommodations, housekeeping service is provided on working days; for reservations staying seven days or less. Residence Houses Curie House: US $42.00/day Cavendish House: US $42.00/day Compton House: US $42.00/day Housekeeping service for all residence houses are provided three times per

464

Optimal Control of Markov Processes with Age-Dependent Transition Rates  

SciTech Connect

We study optimal control of Markov processes with age-dependent transition rates. The control policy is chosen continuously over time based on the state of the process and its age. We study infinite horizon discounted cost and infinite horizon average cost problems. Our approach is via the construction of an equivalent semi-Markov decision process. We characterise the value function and optimal controls for both discounted and average cost cases.

Ghosh, Mrinal K., E-mail: mkg@math.iisc.ernet.in; Saha, Subhamay, E-mail: subhamay@math.iisc.ernet.in [Indian Institute of Science, Department of Mathematics (India)

2012-10-15T23:59:59.000Z

465

A von Hamos x-ray spectrometer based on a segmented-type diffraction crystal for single-shot x-ray emission spectroscopy and time-resolved resonant inelastic x-ray scattering studies  

SciTech Connect

We report on the design and performance of a wavelength-dispersive type spectrometer based on the von Hamos geometry. The spectrometer is equipped with a segmented-type crystal for x-ray diffraction and provides an energy resolution in the order of 0.25 eV and 1 eV over an energy range of 8000 eV-9600 eV. The use of a segmented crystal results in a simple and straightforward crystal preparation that allows to preserve the spectrometer resolution and spectrometer efficiency. Application of the spectrometer for time-resolved resonant inelastic x-ray scattering and single-shot x-ray emission spectroscopy is demonstrated.

Szlachetko, J. [Paul Scherrer Institut, 5232 Villigen PSI (Switzerland); Institute of Physics, Jan Kochanowski University, 25-406 Kielce (Poland); Nachtegaal, M.; Boni, E. de; Willimann, M.; Safonova, O.; Sa, J.; Smolentsev, G.; Szlachetko, M.; Bergamaschi, A.; Schmitt, B.; David, C.; Luecke, A. [Paul Scherrer Institut, 5232 Villigen PSI (Switzerland); Bokhoven, J. A. van [Paul Scherrer Institut, 5232 Villigen PSI (Switzerland); Institute for Chemical and Bioengineering, ETH Zurich, 8093 Zuerich (Switzerland); Dousse, J.-Cl.; Hoszowska, J.; Kayser, Y. [Department of Physics, University of Fribourg, 1700 Fribourg (Switzerland); Jagodzinski, P. [University of Technology, Kielce (Poland)

2012-10-15T23:59:59.000Z

466

electric rates | OpenEI  

Open Energy Info (EERE)

electric rates electric rates Dataset Summary Description This dataset, compiled by NREL and Ventyx, provides average residential, commercial and industrial electricity rates by zip code for both investor owned utilities (IOU) and non-investor owned utilities. Note: the file includes average rates for each utility, but not the detailed rate structure data found in the database available via the zip-code look-up feature on the OpenEI Utilities page (http://en.openei.org/wiki/Gateway:Utilities). The data was released by NREL/Ventyx in February 2011. Source NREL and Ventyx Date Released February 24th, 2012 (2 years ago) Date Updated Unknown Keywords electric rates rates US utilities Data text/csv icon IOU rates by zipcode (csv, 1.7 MiB) text/csv icon Non-IOU rates by zipcode (csv, 2.1 MiB)

467

Rate Schedules | Department of Energy  

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

Rate Schedules Rate Schedules Rate Schedules One of the major responsibilities of Southeastern is to design, formulate, and justify rate schedules. Repayment studies prepared by the agency determine revenue requirements and appropriate rate levels and these studies for each of Southeastern's four power marketing systems are updated annually. They demonstrate the adequacy of the rates for each system. Rates are considered to be adequate when revenues are sufficient to repay all costs associated with power production and transmission costs, which include the amortization of the Federal investment allocated to power. Latest Rate Schedules October 1, 2012 ALA-1-N Wholesale Power Rate Schedule Area: PowerSouth Energy Cooperative System: Georgia-Alabama-South Carolina October 1, 2012

468

NREL: Photovoltaics Research - Photovoltaic Energy Ratings Methods  

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

Photovoltaic Energy Ratings Methods Validation Photovoltaic Energy Ratings Methods Validation The Photovoltaic (PV) Engineering group at NREL validates energy