National Library of Energy BETA

Sample records for normal seasonal outage

  1. Improving Outage Performance: Outage Optimization Process

    SciTech Connect (OSTI)

    LaPlatney, Jere J. [AREVA NP (United States)

    2006-07-01

    Planned outage performance is a key measure of how well an Nuclear Power Plant (NPP) is operated. Performance during planned outages strongly affects virtually all of a plant's performance metrics. In recognition of this fact, NPP operators worldwide have and continue to focus on improving their outage performance. The process of improving outage performance is commonly referred to as 'Outage Optimization' in the industry. This paper starts with a summary of the principles of Outage Optimization. It then provides an overview of a process in common use in the USA and elsewhere to manage the improvement of planned outages. The program described is comprehensive in that it involves managing improvement in both the Preparation and Execution phases of outage management. (author)

  2. On Asymptotic Outage Capacity Distribution of Correlated MIMO Channels

    E-Print Network [OSTI]

    Loyka, Sergey

    On Asymptotic Outage Capacity Distribution of Correlated MIMO Channels Georgy Levin* and Sergey condition for the asymptotic normality of MIMO channel outage capacity is considered. Some physical aspects, asymptotic capacity, correlation. I. INTRODUCTION Outage capacity is one of the major characteristics

  3. Outage Optimum Routing for Wireless Networks

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2011-01-01

    Outage Optimum Routing for Wireless Networks B. Amiri, H. R.of wireless network outage probability in a fadinguse analytical calculation of outage probability in wireless

  4. Shopping for outage management systems

    SciTech Connect (OSTI)

    Chou, Y.C.; Konneker, L.K.; Watkins, T.R.

    1995-12-31

    Customer service is becoming increasingly important to electric utilities. Outage management is an important part of customer service. Good outage management means quickly responding to outages and keeping customers informed about outages. Each outage equals lost customer satisfaction and lost revenue. Outage management is increasingly important because of new competition among utilities for customers, pressure from regulators, and internal pressure to cut costs. The market has several existing software products for outage management. How does a utility judge whether these products satisfy their specific needs? Technology is changing rapidly to support outage management. Which technology is proven and cost-effective? The purpose of this paper is to outline the procedure for evaluating outage management systems, and to discuss the key features to look for. It also gives our opinion of the features that represent state of the art. This paper will not discuss specific products or list vendors names.

  5. OutageMapURL Phases Energy Services

    Open Energy Info (EERE)

    OutageMapURL Phases Energy Services County Electric Power Assn http outages county org A N Electric Coop Virginia AEP Generating Company https www aepaccount com zipr...

  6. RESOLVED: Projectb filesystem outage July 9, 2012

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

    RESOLVED: Projectb filesystem outage July 9, 2012 RESOLVED: Projectb filesystem outage July 9, 2012 July 9, 2012 (0 Comments) The projectb filesystem had a hardware failure that...

  7. Outage probability at finite SNR

    E-Print Network [OSTI]

    Akçaba, Cemal

    2004-01-01

    In this thesis, we present a technique to reduce the outage probability of a single user multiple input multiple output (MIMO) channel when a sub-optimal transceiver architecture is used. We show that in slow-fading ...

  8. Outage Behavior of Selective Relaying Schemes

    E-Print Network [OSTI]

    Woradit, Kampol

    Cooperative diversity techniques can improve the transmission rate and reliability of wireless networks. For systems employing such diversity techniques in slow-fading channels, outage probability and outage capacity are ...

  9. Internet Outages, the Eyewitness Accounts: Analysis of the Outages Mailing List

    E-Print Network [OSTI]

    Sekar, Vyas

    Internet Outages, the Eyewitness Accounts: Analysis of the Outages Mailing List Ritwik Banerjee and outages is critical to the "health" of the Internet infrastructure. Unfortunately, our ability to analyze. In this paper, we leverage a somewhat unconventional dataset to analyze Internet reliability--the outages

  10. Congestion Analysis during Outage, Congestion Treatment and Outage Recovery for simple GPRS networks

    E-Print Network [OSTI]

    Firenze, Università degli Studi di

    Congestion Analysis during Outage, Congestion Treatment and Outage Recovery for simple GPRS overlap- ping. In particular, we consider that one of the two cells is affected by an outage and we some network resources become suddenly un- available due to malfunctions. The occurrence of an outage

  11. Outage Probability Under Channel Distribution Uncertainty

    E-Print Network [OSTI]

    Loyka, Sergey

    Outage Probability Under Channel Distribution Uncertainty Ioanna Ioannou, Charalambos D. Charalambous and Sergey Loyka Abstract--Outage probability of a class of block-fading (MIMO) channels outage probability defined as min (over the input distribution) -max (over the channel distribution class

  12. ADMIN SYSTEMS OUTAGE NOTIFICATION PROCESS (2/13/07 Marcia)

    E-Print Network [OSTI]

    Kunkle, Tom

    l .(, '- ADMIN SYSTEMS OUTAGE NOTIFICATION PROCESS (2/13/07 Marcia) STANDARD OUTAGE TIMES (NO of month rd ADMIN SERVERS (Wando/Cooper): Midnight - 8PM Sunday of month SCHEDULED OUTAGES DURING NON-STANDARD OUTAGE TIMES: Requestor sends outage request to "ITOutageRequest" for approval at least 5 business days

  13. Rateless Code Based Multimedia Multicasting with Outage Probability Constraints

    E-Print Network [OSTI]

    Blostein, Steven D.

    Rateless Code Based Multimedia Multicasting with Outage Probability Constraints Wei Sheng, Wai encoding transmission (PET)-based packetization structure [1] combined with rateless codes. Outage is capable of minimizing the transmission cost while simultaneously guaranteeing outage prob- ability

  14. Predictive Compensation for Communication Outages in Networked Control Systems

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Predictive Compensation for Communication Outages in Networked Control Systems Erik Henriksson Henrik Sandberg Karl Henrik Johansson Abstract-- A predictive outage compensator co time instance, the predictive outage compensator suggests a replacement command based on the history

  15. A framework and review of customer outage costs: Integration and analysis of electric utility outage cost surveys

    E-Print Network [OSTI]

    Lawton, Leora; Sullivan, Michael; Van Liere, Kent; Katz, Aaron; Eto, Joseph

    2003-01-01

    M. and D. Keane (1995). Outage Cost Estimation Guidebook.Figure 5-1. Predicted Outage Cost By Region and DurationFigure 5-2. Predicted Outage Cost By Region and Duration

  16. Analysis and Mitigation of Tropospheric Effects on Ka Band Satellite Signals and Estimation of Ergodic Capacity and Outage Probability for Terrestrial Links

    E-Print Network [OSTI]

    Enserink, Scott Warren

    2012-01-01

    of Outage Probability . . . . . . . . . . . . . . . . . .vii OutageResults Using the LLN Outage Probability

  17. GUIDELINES FOR IMPLEMENTATION OF AN ADVANCED OUTAGE CONTROL CENTER TO IMPROVE OUTAGE COORDINATION, PROBLEM RESOLUTION, AND OUTAGE RISK MANAGEMENT

    SciTech Connect (OSTI)

    Germain, Shawn St; Farris, Ronald; Whaley, April M; Medema, Heather; Gertman, David

    2014-09-01

    This research effort is a part of the Light-Water Reactor Sustainability (LWRS) Program, which is a research and development (R&D) program sponsored by Department of Energy (DOE) and performed in close collaboration with industry R&D programs that provide the technical foundations for licensing and managing the long-term, safe, and economical operation of current nuclear power plants. The LWRS program serves to help the U.S. nuclear industry adopt new technologies and engineering solutions that facilitate the continued safe operation of the plants and extension of the current operating licenses. Managing NPP outages is a complex and difficult task due to the large number of maintenance and repair activities that are accomplished in a short period of time. During an outage, the outage control center (OCC) is the temporary command center for outage managers and provides several critical functions for the successful execution of the outage schedule. Essentially, the OCC functions to facilitate information inflow, assist outage management in processing information, and to facilitate the dissemination of information to stakeholders. Currently, outage management activities primarily rely on telephone communication, face to face reports of status, and periodic briefings in the OCC. It is a difficult task to maintain current the information related to outage progress and discovered conditions. Several advanced communication and collaboration technologies have shown promise for facilitating the information flow into, across, and out of the OCC. The use of these technologies will allow information to be shared electronically, providing greater amounts of real-time information to the decision makers and allowing OCC coordinators to meet with supporting staff remotely. Passively monitoring status electronically through advances in the areas of mobile worker technologies, computer-based procedures, and automated work packages will reduce the current reliance on manually reporting progress. The use of these technologies will also improve the knowledge capture and management capabilities of the organization. The purpose of this research is to improve management of NPP outages through the development of an advanced outage control center (AOCC) that is specifically designed to maximize the usefulness of communication and collaboration technologies for outage coordination and problem resolution activities. This technical report for industry implementation outlines methods and considerations for the establishment of an AOCC. This report provides a process for implementation of a change management plan, evaluation of current outage processes, the selection of technology, and guidance for the implementation of the selected technology. Methods are presented for both adoption of technologies within an existing OCC and for a complete OCC replacement, including human factors considerations for OCC design and setup.

  18. Managing turbine-generator outages by computer

    SciTech Connect (OSTI)

    Reinhart, E.R. [Reinhart and Associates, Inc., Austin, TX (United States)

    1997-09-01

    This article describes software being developed to address the need for computerized planning and documentation programs that can help manage outages. Downsized power-utility companies and the growing demand for independent, competitive engineering and maintenance services have created a need for a computer-assisted planning and technical-direction program for turbine-generator outages. To meet this need, a software tool is now under development that can run on a desktop or laptop personal computer to assist utility personnel and technical directors in outage planning. Total Outage Planning Software (TOPS), which runs on Windows, takes advantage of the mass data storage available with compact-disc technology by archiving the complete outage documentation on CD. Previous outage records can then be indexed, searched, and viewed on a computer with the click of a mouse. Critical-path schedules, parts lists, parts order tracking, work instructions and procedures, custom data sheets, and progress reports can be generated by computer on-site during an outage.

  19. On The Outage Capacity Distribution of Correlated Keyhole MIMO Channels

    E-Print Network [OSTI]

    Loyka, Sergey

    On The Outage Capacity Distribution of Correlated Keyhole MIMO Channels G. Levin and S. Loyka for the instantaneous SNR and outage capacity distributions of a spatially correlated keyhole MIMO channel are given diversity channel with a single Tx (Rx) and multiple Rx (Tx) antennas. The outage capacity at low outage

  20. Outage Mutual Information of Space-Time MIMO Channels

    E-Print Network [OSTI]

    Giannakis, Georgios

    Outage Mutual Information of Space-Time MIMO Channels Zhengdao Wang Georgios B. Giannakis Dept) leads to an increase in outage rate approximately equal to min(M, N), where M and N denote the number information outage probability. Finding this outage probability, as a function of R, is therefore equivalent

  1. Reduced-Order Predictive Outage Compensators for Networked Systems

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Reduced-Order Predictive Outage Compensators for Networked Systems Erik Henriksson Henrik Sandberg communication outage of several samples in situations when the radio environment is noisy and low transmission power is desirable. We propose a method to compensate for outages by introducing a predictive outage

  2. Fluid Model of the Outage Probability in Sectored Wireless Networks

    E-Print Network [OSTI]

    Coupechoux, Marceau

    Fluid Model of the Outage Probability in Sectored Wireless Networks Jean-Marc Kelif France Telecom to derive the global outage probability and the spatial outage probability, which depends on the location the derivation of outage probabilities, capacity evaluation and then, the definition of Call Admission Control

  3. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 11, NO. 10, OCTOBER 2012 3561 Outage Probability and Outage-Based Robust

    E-Print Network [OSTI]

    Sung, Youngchul

    IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 11, NO. 10, OCTOBER 2012 3561 Outage Probability and Outage-Based Robust Beamforming for MIMO Interference Channels with Imperfect Channel State Information, and H. Vincent Poor Fellow, IEEE Abstract--In this paper, the outage probability and outage- based beam

  4. Characteristics and trends in a National Study of Consumer Outage Costs

    E-Print Network [OSTI]

    Lawton, Leora; Eto, Joseph H.; Katz, Aaron; Sullivan, Michael

    2003-01-01

    Conference Lawton, Eto Katz & Sullivan Consumer Outage CostsDatabase of Customer Outage Costs. Forthcoming. Sullivan, M.and D. Keane. 1995. Outage Cost Estimation Guidebook.

  5. Resource allocation for semi-elastic applications with outage constraints in cellular networks

    E-Print Network [OSTI]

    Yang, C; Jordan, S

    2015-01-01

    Liang, and S. -G. H¨aggman, “Outage probability in GSM- GPRSand rate control with outage constraints in CDMA wirelessand P. Spasojevic, “Service outage based power and rate

  6. MonteCarlo and Analytical Methods for Forced Outage Rate Calculations of Peaking Units 

    E-Print Network [OSTI]

    Rondla, Preethi 1988-

    2012-10-26

    pessimistic results owing to its time spent in the reserve shut down state. Therefore the normal two state representation of a generating unit is not adequate. A four state model was proposed by an IEEE committee to calculate the forced outage rate...

  7. Advanced Test Reactor outage risk assessment

    SciTech Connect (OSTI)

    Thatcher, T.A.; Atkinson, S.A.

    1997-12-31

    Beginning in 1997, risk assessment was performed for each Advanced Test Reactor (ATR) outage aiding the coordination of plant configuration and work activities (maintenance, construction projects, etc.) to minimize the risk of reactor fuel damage and to improve defense-in-depth. The risk assessment activities move beyond simply meeting Technical Safety Requirements to increase the awareness of risk sensitive configurations, to focus increased attention on the higher risk activities, and to seek cost-effective design or operational changes that reduce risk. A detailed probabilistic risk assessment (PRA) had been performed to assess the risk of fuel damage during shutdown operations including heavy load handling. This resulted in several design changes to improve safety; however, evaluation of individual outages had not been performed previously and many risk insights were not being utilized in outage planning. The shutdown PRA provided the necessary framework for assessing relative and absolute risk levels and assessing defense-in-depth. Guidelines were written identifying combinations of equipment outages to avoid. Screening criteria were developed for the selection of work activities to receive review. Tabulation of inherent and work-related initiating events and their relative risk level versus plant mode has aided identification of the risk level the scheduled work involves. Preoutage reviews are conducted and post-outage risk assessment is documented to summarize the positive and negative aspects of the outage with regard to risk. The risk for the outage is compared to the risk level that would result from optimal scheduling of the work to be performed and to baseline or average past performance.

  8. Contingency Analysis of Cascading Line Outage Events

    SciTech Connect (OSTI)

    Thomas L Baldwin; Magdy S Tawfik; Miles McQueen

    2011-03-01

    As the US power systems continue to increase in size and complexity, including the growth of smart grids, larger blackouts due to cascading outages become more likely. Grid congestion is often associated with a cascading collapse leading to a major blackout. Such a collapse is characterized by a self-sustaining sequence of line outages followed by a topology breakup of the network. This paper addresses the implementation and testing of a process for N-k contingency analysis and sequential cascading outage simulation in order to identify potential cascading modes. A modeling approach described in this paper offers a unique capability to identify initiating events that may lead to cascading outages. It predicts the development of cascading events by identifying and visualizing potential cascading tiers. The proposed approach was implemented using a 328-bus simplified SERC power system network. The results of the study indicate that initiating events and possible cascading chains may be identified, ranked and visualized. This approach may be used to improve the reliability of a transmission grid and reduce its vulnerability to cascading outages.

  9. Outage management and health physics issue, 2007

    SciTech Connect (OSTI)

    Agnihotri, Newal (ed.)

    2007-05-15

    The focus of the May-June issue is on outage management and health physics. Major articles/reports in this issue include: India: a potential commercial opportunity, a U.S. Department of Commerce Report, by Joe Neuhoff and Justin Rathke; The changing climate for nuclear energy, by Skip Bowman, Nuclear Energy Insitute; Selecting protective clothing, by J. Mark Price, Southern California Edison; and Succssful refurbishment outage, by Sudesh K. Gambhir, Omaha Public Power District. Industry innovation articles in this issue are: Containment radiation monitoring spiking, by Michael W. Lantz and Robert Routolo, Arizona Public Service Company; Improved outage performance, by Michael Powell and Troy Wilfong, Arizona Public Service Company, Palo Verde Nuclear Generating Station; Stop repacking valves and achieve leak-free performance, by Kenneth Hart, PPL Susquehanna LLC; and Head assembly upgrade package, by Timothy Petit, Dominion Nuclear.

  10. Benchmark Report on Key Outage Attributes: An Analysis of Outage Improvement Opportunities and Priorities

    SciTech Connect (OSTI)

    Germain, Shawn St.; Farris, Ronald

    2014-09-01

    Advanced Outage Control Center (AOCC), is a multi-year pilot project targeted at Nuclear Power Plant (NPP) outage improvement. The purpose of this pilot project is to improve management of NPP outages through the development of an AOCC that is specifically designed to maximize the usefulness of communication and collaboration technologies for outage coordination and problem resolution activities. This report documents the results of a benchmarking effort to evaluate the transferability of technologies demonstrated at Idaho National Laboratory and the primary pilot project partner, Palo Verde Nuclear Generating Station. The initial assumption for this pilot project was that NPPs generally do not take advantage of advanced technology to support outage management activities. Several researchers involved in this pilot project have commercial NPP experience and believed that very little technology has been applied towards outage communication and collaboration. To verify that the technology options researched and demonstrated through this pilot project would in fact have broad application for the US commercial nuclear fleet, and to look for additional outage management best practices, LWRS program researchers visited several additional nuclear facilities.

  11. Power Outage 1.Stop serving food and beverages.

    E-Print Network [OSTI]

    LESSON1 Power Outage 1.Stop serving food and beverages. Notify customers. 2.Do two things food. Emergency Readiness for Food Workers #12;LESSON1 Power Outage 5.Food being held cold: Discard

  12. Hopper compilers and DDT short outage next Wed, May 16

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

    compilers and DDT short outage next Wed, May 16 Hopper compilers and DDT short outage next Wed, May 16 May 10, 2012 (0 Comments) Due to a scheduled maintenance for the License...

  13. Outage Capacity and Code Design for Dying Channels 

    E-Print Network [OSTI]

    Zeng, Meng

    2012-10-19

    channel length. First, we study the outage probability when the coding length K is fixed and uniform power allocation is assumed. Furthermore, we discuss the optimization over K and the power allocation vector PK to minimize the outage probability...

  14. Outage managment and health physics issue, 2008

    SciTech Connect (OSTI)

    Agnihotri, Newal (ed.)

    2008-05-15

    The focus of the May-June issue is on outage management and health physics. Major articles include: Outage optimization initiatives, by George B. Beam, AREVA NP, Inc.; New plant based on excellent track records, by Jim Scarola, Progress Energy; Meeting customer needs and providing environmental benefits, by Peter S. Hastings, Duke Energy; Plants with 3-D design, by Jack A. Bailey, Tennessee Valley Authority; and Highest quality with exceptional planning, by Jason A. Walls, Duke Energy. Industry innovation articles include: Integrated exposure reduction plan, by Ed Wolfe, Exelon; Performance-based radiation worker training, by Joe Giuffre and Timothy Vriezerma, American Electric Power.

  15. Outage Performance of the Primary Service in Spectrum Sharing Networks

    E-Print Network [OSTI]

    Yanikomeroglu, Halim

    Outage Performance of the Primary Service in Spectrum Sharing Networks Mohammad G. Khoshkholgh, we utilize stochastic geometry to analyze the primary service (PS) outage performance for spectrum) parameters and wireless environment on the PS outage probability are analyzed. We further obtain a closed

  16. Spatial Outage Probability Formula for CDMA Jean-Marc Kelif

    E-Print Network [OSTI]

    Coupechoux, Marceau

    Spatial Outage Probability Formula for CDMA Networks Jean-Marc Kelif France Telecom R&D Issy networks called the fluid model and we derive from this model analytical formulas for interference, outage probability, and spatial outage probability. The key idea of the fluid model is to consider the discrete base

  17. Collaboration Surfaces for Outage Control Centers Lars Hurlen

    E-Print Network [OSTI]

    Deussen, Oliver

    Collaboration Surfaces for Outage Control Centers Lars Hurlen Institute for Energy Technology Os to the demands found in complex industrial domains. We focus our discussion around the Outage Control Centre Nuclear Power Plants, Process industry, Outage Control Centers, High Reliability Organizations

  18. SERVICE OUTAGE BASED ADAPTIVE TRANSMISSION IN FADING CHANNELS

    E-Print Network [OSTI]

    Yates, Roy

    SERVICE OUTAGE BASED ADAPTIVE TRANSMISSION IN FADING CHANNELS BY JIANGHONG LUO A dissertation OF THE DISSERTATION Service Outage Based Adaptive Transmission in Fading Channels by Jianghong Luo Dissertation Director: Prof. Roy Yates, Prof. Predrag Spasojevi´c The service outage based allocation problem explores

  19. Visualizing Sparse Internet Events: Network Outages and Route Changes

    E-Print Network [OSTI]

    Heidemann, John

    Visualizing Sparse Internet Events: Network Outages and Route Changes Lin Quan · John Heidemann. To understand and man- age network events such as outages, route instability, and spam campaigns, they must- namics of network outages such as January 2011 Egyptian change of government, and the March 2011 Japanese

  20. Conservative Estimates of Blocking and Outage Probabilities in CDMA Networks

    E-Print Network [OSTI]

    Bonald, Thomas

    Conservative Estimates of Blocking and Outage Probabilities in CDMA Networks T. Bonald, A. Prouti`ere 1 France Telecom, Division R&D, Issy-les-Moulineaux, France Abstract The outage probability is a key the blocking probability. The blocking and outage probabilities do not have closed-form expressions

  1. Mismatched CSI Outage Exponents of Block-Fading Channels

    E-Print Network [OSTI]

    Mismatched CSI Outage Exponents of Block-Fading Channels A. Taufiq Asyhari Department variances at the transmitter and at the receiver to give the optimal outage exponents. We also demonstrate state information at the transmitter in terms of outage exponent. I. INTRODUCTION The block

  2. Poster Abstract: Towards Active Measurements of Edge Network Outages

    E-Print Network [OSTI]

    Heidemann, John

    Poster Abstract: Towards Active Measurements of Edge Network Outages Lin Quan John Heidemann Yuri-to-end reachability is a fundamental service of the Internet. We study net- work outages caused by natural disasters [2,5], and political upheavals [8]. We propose a new approach to outage detection using active

  3. Multi-Keyhole MIMO Channels: Asymptotic Analysis of Outage Capacity

    E-Print Network [OSTI]

    Loyka, Sergey

    Multi-Keyhole MIMO Channels: Asymptotic Analysis of Outage Capacity George Levin and Sergey Loyka single-keyhole channels. The outage capacity distribution of both full-rank and rank-deficient multi channel, outage capacity, correlation. I. INTRODUCTION Multiple-Input-Multiple-Output (MIMO) channels have

  4. Outage and Capacity Analysis of Cellular CDMA With Admission Control

    E-Print Network [OSTI]

    Chockalingam, A.

    Outage and Capacity Analysis of Cellular CDMA With Admission Control S. AnandÝ , A. Chockalingam. Ltd., Bangalore, INDIA Abstract-- We analyze the outage and capacity performance of an interference based admission control strategy in cellular CDMA systems. Most approaches to estimate the outage

  5. Does Beamforming achieve Outage Capacity with Direction Feedback?

    E-Print Network [OSTI]

    Jafar, Syed A.

    Does Beamforming achieve Outage Capacity with Direction Feedback? Sudhir Srinivasa and Syed Ali: syed@ece.uci.edu, sudhirs@uci.edu Email: sriram@ece.utexas.edu Abstract We explore the outage capacity of outage capacity for a quantized channel direction feedback system. The technique is used to establish

  6. A Preliminary Analysis of Network Outages During Hurricane Sandy

    E-Print Network [OSTI]

    Heidemann, John

    A Preliminary Analysis of Network Outages During Hurricane Sandy USC/ISI Technical Report ISI outages during the October 2012 Hurricane Sandy. We assess net- work reliability by pinging a sample network outages, we see that the out- age rate in U.S. networks doubled when the hurricane made landfall

  7. OUTAGE MINIMIZATION BY OPPORTUNISTIC COOPERATION Deniz Gunduz, Elza Erkip

    E-Print Network [OSTI]

    Erkip, Elza

    OUTAGE MINIMIZATION BY OPPORTUNISTIC COOPERATION Deniz Gunduz, Elza Erkip Department of Electrical channel state information, and consider the system perfor- mance in terms of outage probability. We improves the outage performance significantly and performs very close to the half-duplex lower bound while

  8. Onsite Wastewater Treatment Systems: Responding to Electrical Power Outages

    E-Print Network [OSTI]

    1 Onsite Wastewater Treatment Systems: Responding to Electrical Power Outages and Floods Bruce The Texas A&M University System Electrical power outages and floods can affect you and your residential power outages and flooding. System Components To properly respond to a disaster, homeowners need to know

  9. Asymptotic Analysis of Outage Probability in Cognitive Radio Networks

    E-Print Network [OSTI]

    Loyka, Sergey

    Asymptotic Analysis of Outage Probability in Cognitive Radio Networks Yaobin Wen, Sergey Loyka but not the outage probability itself. Unlike the cumulant-based analysis, our approach provides a guaranteed level. In particular, we demonstrate that there is a critical transition point below which the outage probability

  10. Spatial Outage Probability for Cellular Networks Jean-Marc Kelif

    E-Print Network [OSTI]

    Coupechoux, Marceau

    Spatial Outage Probability for Cellular Networks Jean-Marc Kelif France Telecom R&D Issy networks called the fluid model and we derive from this model analytical formulas for interference, outage probability, and spatial outage probability. The key idea of the fluid model is to consider the discrete base

  11. Outage management and health physics issue, 2006

    SciTech Connect (OSTI)

    Agnihotri, Newal (ed.)

    2006-05-15

    The focus of the May-June issue is on outage management and health physics. Major articles/reports in this issue include: A design with experience for the U.S., by Michael J. Wallace, Constellation Generation Group; Hope to be among the first, by Randy Hutchinson, Entergy Nuclear; Plans to file COLs in 2008, by Garry Miller, Progress Energy; Evolution of ICRP's recommendations, by Lars-Erik Holm, ICRP; European network on education and training in radiological protection, by Michele Coeck, SCK-CEN, Belgium; Outage managment: an important tool for improving nuclear power plant performance, by Thomas Mazour and Jiri Mandula, IAEA, Austria; and Plant profile: Exploring new paths to excellence, by Anne Thomas, Exelon Nuclear.

  12. Outage management and health physics issue, 2009

    SciTech Connect (OSTI)

    Agnihotri, Newal

    2009-05-15

    The focus of the May-June issue is on outage management and health physics. Major articles include the following: Planning and scheduling to minimize refueling outage, by Pat McKenna, AmerenUE; Prioritizing safety, quality and schedule, by Tom Sharkey, Dominion; Benchmarking to high standards, by Margie Jepson, Energy Nuclear; Benchmarking against U.S. standards, by Magnox North, United Kingdom; Enabling suppliers for new build activity, by Marcus Harrington, GE Hitachi Nuclear Energy; Identifying, cultivating and qualifying suppliers, by Thomas E. Silva, AREVA NP; Creating new U.S. jobs, by Francois Martineau, Areva NP. Industry innovation articles include: MSL Acoustic source load reduction, by Amir Shahkarami, Exelon Nuclear; Dual Methodology NDE of CRDM nozzles, by Michael Stark, Dominion Nuclear; and Electronic circuit board testing, by James Amundsen, FirstEnergy Nuclear Operating Company. The plant profile article is titled The future is now, by Julia Milstead, Progress Energy Service Company, LLC.

  13. Advanced Outage and Control Center: Strategies for Nuclear Plant Outage Work Status Capabilities

    SciTech Connect (OSTI)

    Gregory Weatherby

    2012-05-01

    The research effort is a part of the Light Water Reactor Sustainability (LWRS) Program. LWRS is a research and development program sponsored by the Department of Energy, performed in close collaboration with industry to provide the technical foundations for licensing and managing the long-term, safe and economical operation of current nuclear power plants. The LWRS Program serves to help the US nuclear industry adopt new technologies and engineering solutions that facilitate the continued safe operation of the plants and extension of the current operating licenses. The Outage Control Center (OCC) Pilot Project was directed at carrying out the applied research for development and pilot of technology designed to enhance safe outage and maintenance operations, improve human performance and reliability, increase overall operational efficiency, and improve plant status control. Plant outage management is a high priority concern for the nuclear industry from cost and safety perspectives. Unfortunately, many of the underlying technologies supporting outage control are the same as those used in the 1980’s. They depend heavily upon large teams of staff, multiple work and coordination locations, and manual administrative actions that require large amounts of paper. Previous work in human reliability analysis suggests that many repetitive tasks, including paper work tasks, may have a failure rate of 1.0E-3 or higher (Gertman, 1996). With between 10,000 and 45,000 subtasks being performed during an outage (Gomes, 1996), the opportunity for human error of some consequence is a realistic concern. Although a number of factors exist that can make these errors recoverable, reducing and effectively coordinating the sheer number of tasks to be performed, particularly those that are error prone, has the potential to enhance outage efficiency and safety. Additionally, outage management requires precise coordination of work groups that do not always share similar objectives. Outage managers are concerned with schedule and cost, union workers are concerned with performing work that is commensurate with their trade, and support functions (safety, quality assurance, and radiological controls, etc.) are concerned with performing the work within the plants controls and procedures. Approaches to outage management should be designed to increase the active participation of work groups and managers in making decisions that closed the gap between competing objectives and the potential for error and process inefficiency.

  14. How individual traces and interactive timelines could support outage execution - Toward an outage historian concept

    SciTech Connect (OSTI)

    Parfouru, S.; De-Beler, N. [EDF Recherche and Developpement, 6 quai Watier, 78400 Chatou (France)

    2012-07-01

    In the context of a project that is designing innovative ICT-based solutions for the organizational concept of outage management, we focus on the informational process of the OCR (Outage Control Room) underlying the execution of the outages. Informational process are based on structured and unstructured documents that have a key role in the collaborative processes and management of the outage. We especially track the structured and unstructured documents, electronically or not, from creation to sharing. Our analysis allows us to consider that the individual traces produced by an individual participant with a specific role could be multi-purpose and support sharing between participants without creating duplication of work. The ultimate goal is to be able to generate an outage historian, that is not just focused on highly structured information, which could be useful to improve the continuity of information between participants. We study the implementation of this approach through web technologies and social media tools to address this issue. We also investigate the issue of data access through interactive visualization timelines coupled with other modality's to assist users in the navigation and exploration of the proposed historian. (authors)

  15. Application of Standard Maintenance Windows in PHWR Outage

    SciTech Connect (OSTI)

    Fuming Jiang [Third Qinshan Nuclear Power Company, Ltd. (China)

    2006-07-01

    The concept of Standard Maintenance Windows has been widely used in the planned outage of light water reactor in the world. However, due to the specific feature of Pressurized Heavy Water Reactor (PHWR), it has not come to a consensus for the PHWR owners to adopt Standard Maintenance Windows for planned outage aiming at the optimization of outage duration. Third Qinshan Nuclear Power Company (TQNPC), with their experience gained in the previous outages and with reference to other PHWR power plants, has identified a set of Standard Maintenance Windows for planned outage. It can be applied to similar PHWR plants and with a few windows that are specific to Qinshan Phase III NPP. The use of these Standard Maintenance Windows in planned outage has been proved to be effective in control shutdown nuclear safety, minimize the unavailability of safety system, improve the efficient utilization of outage duration, and improved the flexibility of outage schedule in the case of emergency issue, which forced the revision of outage schedule. It has also formed a solid foundation for benchmarking. The identification of Standard Maintenance Windows and its application will be discussed with relevant cases for the common improvement of outage duration. (author)

  16. Bounds on the outage-constrained capacity region of space-division multiple-access radio systems

    E-Print Network [OSTI]

    Jin, Haipeng; Acampora, A

    2004-01-01

    Broadcast Channels - Part I: Outage Capacity,” IEEE Trans.Bounds on the Outage-Constrained Capacity Region of Spacethe capacity limit as an outage region rates contained

  17. Power Outage 1. Remain Calm; provide assistance to others if necessary.

    E-Print Network [OSTI]

    Hickman, Mark

    Power Outage 1. Remain Calm; provide assistance to others if necessary. 2. Report the outage, call. Campus-wide telephone communications will continue to operate during a power outage on standard phones. If emergency assistance is required, call UC Security on Extn 6111 and state "POWEr OUTAgE" or mobile 0800 823

  18. Outlook for Refinery Outages and Available Refinery Capacity...

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

    of gasoline and distillate, and to include a more detailed consideration of the impact of unexpected outages on product supplies. This report reviews the potential...

  19. How Accurate are the Gaussian and Gamma Approximations to the Outage Capacity of MIMO Channels ?

    E-Print Network [OSTI]

    Øien, Geir E.

    How Accurate are the Gaussian and Gamma Approximations to the Outage Capacity of MIMO Channels MIMO capacity complementary cumulative distribution functions, or equivalently, the outage capacity distribution function (CDF) (also known as the outage capacity), or equivalently, the capacity complementary

  20. Cross-Layer Design of Outage Optimum Routing Metric for Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Garcia-Luna-Aceves, J.J.

    2011-01-01

    PAPER Cross-layer design of outage optimum routing metricof wireless ad hoc network outage probability in a fadingJ. J. Garcia-Luna-Aceves Outage optimum routing for wireless

  1. Plant maintenance and outage management issue, 2005

    SciTech Connect (OSTI)

    Agnihotri, Newal (ed.)

    2005-01-15

    The focus of the January-February issue is on plant maintenance and outage managment. Major articles/reports in this issue include: Dawn of a new era, by Joe Colvin, Nuclear Energy Institute (NEI); Plant profile: Beloyarsk NPP, Russia, by Nikolai Oshkanov, Beloyarsk NPP, Russia; Improving economic performance, by R. Spiegelberg-Planner, John De Mella, and Marius Condu, IAEA; A model for improving performance, by Pet Karns, MRO Software; ASME codes and standards, by Shannon Burke, ASME International; and, Refurbishment programs, by Craig S. Irish, Nuclear Logistics, Inc.

  2. OutageMapURL Phases Energy Services

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland:NPIProtectio Program | OpenWisconsin:New York:PolicyTailEnergyOpenOutageMapURL

  3. IEEE COMMUNICATIONS LETTERS, VOL. 11, NO. 7, JULY 2007 589 Outage Probability of Selection Cooperation in the

    E-Print Network [OSTI]

    Adve, Raviraj

    IEEE COMMUNICATIONS LETTERS, VOL. 11, NO. 7, JULY 2007 589 Outage Probability of Selection (SNR) regimes. We approximate the outage probability of selection cooperation for all SNR levels approximations for practical values of outage probability. Index Terms-- Outage probability, cooperative

  4. Fermi 2: Independent safety assessment of refueling outage

    SciTech Connect (OSTI)

    Arora, H.O. [Detroit Edison, MI (United States)

    1994-12-31

    Industry experience and studies conducted by the U.S. Nuclear Regulatory Commission (NRC) have shown that plants are susceptible to a variety of events that can challenge safety during shutdowns. While these events have neither posed nor indicated an undue risk to public health and safety, they do serve to underscore the importance of effective outage planning and control. The NUMARC 91-06 guidelines suggest that proper planning and execution of outage activities can reduce the likelihood and consequences of events, which ultimately enhances safety during shutdown. The Fermi 2, Independent Safety Engineering Group (ISEG) is charged with the independent safety review of the refueling outage plan and its implementation. The ISEG is responsible for performing a detailed and critical review of proposed outage plan prior to the start of the outage, maintaining surveillance of the adequacy and consistency of the {open_quotes}defense-in-depth{close_quotes} provided during the outage, reviewing the outage plan changes for potential vulnerabilities that could affect safety functions, and investigating selected events that emerge during the course of the outage.

  5. A stochastic model for the measurement of electricity outage costs

    SciTech Connect (OSTI)

    Grosfeld-Nir, A.; Tishler, A. (Tel Aviv Univ. (Israel))

    1993-01-01

    The measurement of customer outage costs has recently become an important subject of research for electric utilities. This paper uses a stochastic dynamic model as the starting point in developing a market-based method for the evaluation of outage costs. Specifically, the model postulates that once an electricity outage occurs, all production activity stops. Full production is resumed once the electricity outage is over. This process repeats itself indefinitely. The business customer maximizes his expected discounted profits (the expected value of the firm), taking into account his limited ability to respond to repeated random electricity outages. The model is applied to 11 industrial branches in Israel. The estimates exhibit a large variation across branches. 34 refs., 3 tabs.

  6. Analysis of scrams and forced outages at boiling water reactors

    SciTech Connect (OSTI)

    Earle, R. T.; Sullivan, W. P.; Miller, K. R.; Schwegman, W. J.

    1980-07-01

    This report documents the results of a study of scrams and forced outages at General Electric Boiling Water Reactors (BWRs) operating in the United States. This study was conducted for Sandia Laboratories under a Light Water Reactor Safety Program which it manages for the United States Department of Energy. Operating plant data were used to identify the causes of scrams and forced outages. Causes of scrams and forced outages have been summarized as a function of operating plant and plant age and also ranked according to the number of events per year, outage time per year, and outage time per event. From this ranking, identified potential improvement opportunities were evaluated to determine the associated benefits and impact on plant availability.

  7. Technology Integration Initiative In Support of Outage Management

    SciTech Connect (OSTI)

    Gregory Weatherby; David Gertman

    2012-07-01

    Plant outage management is a high priority concern for the nuclear industry from cost and safety perspectives. Often, command and control during outages is maintained in the outage control center where many of the underlying technologies supporting outage control are the same as those used in the 1980’s. This research reports on the use of advanced integrating software technologies and hand held mobile devices as a means by which to reduce cycle time, improve accuracy, and enhance transparency among outage team members. This paper reports on the first phase of research supported by the DOE Light Water Reactor Sustainability (LWRS) Program that is performed in close collaboration with industry to examine the introduction of newly available technology allowing for safe and efficient outage performance. It is thought that this research will result in: improved resource management among various plant stakeholder groups, reduced paper work, and enhanced overall situation awareness for the outage control center management team. A description of field data collection methods, including personnel interview data, success factors, end-user evaluation and integration of hand held devices in achieving an integrated design are also evaluated. Finally, the necessity of obtaining operations cooperation support in field studies and technology evaluation is acknowledged.

  8. Outage performance of an energy-efficient relaying protocol over Nakagami fading channels

    E-Print Network [OSTI]

    Blostein, Steven D.

    Outage performance of an energy-efficient relaying protocol over Nakagami fading channels Viet only when the first-hop signal-to-noise ratio(SNR) is above the outage threshold, otherwise, relay transmission is stopped as it leads in that case to an outage. Closed-form expressions of CG outage probability

  9. The Role of Computational Outage in Dense Cloud-Based Centralized Radio Access Networks

    E-Print Network [OSTI]

    Valenti, Matthew C.

    The Role of Computational Outage in Dense Cloud-Based Centralized Radio Access Networks M. C Outage A computational outage occurs when the amount of computation required to decode the signal in a cloud group exceeds the available resources. The probability of computational outage is: From the system

  10. Using Outage History to Exclude High-Risk Satellites from GBAS Corrections

    E-Print Network [OSTI]

    Stanford University

    Using Outage History to Exclude High-Risk Satellites from GBAS Corrections Sam Pullen and Per Enge this assumption. A study of unscheduled GPS satellite outages from 1999 to present shows that, as expected, older experienced unscheduled outages are more likely to suffer additional unscheduled outages. Combining these two

  11. SUBMITTED TO IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 1 Outage Probability for Diversity Combining

    E-Print Network [OSTI]

    Evans, Brian L.

    SUBMITTED TO IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 1 Outage Probability for Diversity of outage probability in the low-outage regime. The contributions of this paper are (1) derivation of closed, selection and post-detection combining; (2) comparison of the relative outage performance

  12. GMI and Mismatched-CSI Outage Exponents in MIMO Block-Fading Channels

    E-Print Network [OSTI]

    GMI and Mismatched-CSI Outage Exponents in MIMO Block-Fading Channels A. Taufiq Asyhari National then analyze the corresponding outage probability in the high signal-to-noise ratio regime. I. INTRODUCTION outage probability [1]. The majority of works on block-fading channels studied the outage probability

  13. Service Outage Based Power and Rate Allocation for Parallel Fading Channels

    E-Print Network [OSTI]

    Yates, Roy

    1 Service Outage Based Power and Rate Allocation for Parallel Fading Channels Jianghong Luo, Member, IEEE, Roy Yates, Member, IEEE, and Predrag Spasojevi´c, Member, IEEE Abstract-- The service outage of ergodic capacity and outage capacity for fading channels. A service outage occurs when the transmission

  14. Impact of Topology and Shadowing on the Outage Probability of Cellular Networks

    E-Print Network [OSTI]

    Coupechoux, Marceau

    Impact of Topology and Shadowing on the Outage Probability of Cellular Networks Jean-Marc Kelif--This paper proposes an analytical study of the shadowing impact on the outage probability in cellular radio in the outage probability. From f, we are able to derive the outage probability of a mobile station (MS

  15. Outage Analysis and Optimization for Multiaccess/V-BLAST Architecture over MIMO

    E-Print Network [OSTI]

    Varanasi, Mahesh K.

    Outage Analysis and Optimization for Multiaccess/V-BLAST Architecture over MIMO Rayleigh Fading the outage probabilities or upper bounds to outage probabilities, obtained with the optimum decoder feedback decoders. The derivations bring out the intimate connection between the outage probability

  16. Spectrum Sharing in Cognitive Radio Systems Under Outage Probablility Constraint 

    E-Print Network [OSTI]

    Cai, Pei Li

    2011-02-22

    is one, i.e., CR beamforming is optimal under PU outage constraints. Finally, a heuristic algorithm is proposed to provide a suboptimal solution to our MBIP problem by e ciently (in polynomial time) solving a particularly-constructed convex problem. v... . . . . . . . . . . . . . . . . . . . . . . . . 16 f. Karush-Kuhn-Tucker Optimality Conditions . . . 18 III COGNITIVE SPECTRUM SHARING WITH OUTAGE PROB- ABILITY CONSTRAINT : : : : : : : : : : : : : : : : : : : : : 20 A. System and Signal Model . . . . . . . . . . . . . . . . . . . 21 B...

  17. Development of Methodologies for Technology Deployment for Advanced Outage Control Centers that Improve Outage Coordination, Problem Resolution and Outage Risk Management

    SciTech Connect (OSTI)

    Shawn St. Germain; Ronald Farris; Heather Medeman

    2013-09-01

    This research effort is a part of the Light-Water Reactor Sustainability (LWRS) Program, which is a research and development (R&D) program sponsored by Department of Energy (DOE) and performed in close collaboration with industry R&D programs that provides the technical foundations for licensing and managing the long-term, safe, and economical operation of current nuclear power plants. The LWRS program serves to help the U.S. nuclear industry adopt new technologies and engineering solutions that facilitate the continued safe operation of the plants and extension of the current operating licenses. The long term viability of existing nuclear power plants in the U.S. will depend upon maintaining high capacity factors, avoiding nuclear safety issues and reducing operating costs. The slow progress in the construction on new nuclear power plants has placed in increased importance on maintaining the output of the current fleet of nuclear power plants. Recently expanded natural gas production has placed increased economic pressure on nuclear power plants due to lower cost competition. Until recently, power uprate projects had steadily increased the total output of the U.S. nuclear fleet. Errors made during power plant upgrade projects have now removed three nuclear power plants from the U.S. fleet and economic considerations have caused the permanent shutdown of a fourth plant. Additionally, several utilities have cancelled power uprate projects citing economic concerns. For the past several years net electrical generation from U.S. nuclear power plants has been declining. One of few remaining areas where significant improvements in plant capacity factors can be made is in minimizing the duration of refueling outages. Managing nuclear power plant outages is a complex and difficult task. Due to the large number of complex tasks and the uncertainty that accompanies them, outage durations routinely exceed the planned duration. The ability to complete an outage on or near schedule depends upon the performance of the outage management organization. During an outage, the outage control center (OCC) is the temporary command center for outage managers and provides several critical functions for the successful execution of the outage schedule. Essentially, the OCC functions to facilitate information inflow, assist outage management in processing information and to facilitate the dissemination of information to stakeholders. Currently, outage management activities primarily rely on telephone communication, face to face reports of status and periodic briefings in the OCC. Much of the information displayed in OCCs is static and out of date requiring an evaluation to determine if it is still valid. Several advanced communication and collaboration technologies have shown promise for facilitating the information flow into, across and out of the OCC. Additionally, advances in the areas of mobile worker technologies, computer based procedures and electronic work packages can be leveraged to improve the availability of real time status to outage managers.

  18. SAMPLE RESULTS FROM MCU SOLIDS OUTAGE

    SciTech Connect (OSTI)

    Peters, T.; Washington, A.; Oji, L.; Coleman, C.; Poirier, M.

    2014-09-22

    Savannah River National Laboratory (SRNL) has received several solid and liquid samples from MCU in an effort to understand and recover from the system outage starting on April 6, 2014. SRNL concludes that the presence of solids in the Salt Solution Feed Tank (SSFT) is the likely root cause for the outage, based upon the following discoveries ? A solids sample from the extraction contactor #1 proved to be mostly sodium oxalate ? A solids sample from the scrub contactor#1 proved to be mostly sodium oxalate ? A solids sample from the Salt Solution Feed Tank (SSFT) proved to be mostly sodium oxalate ? An archived sample from Tank 49H taken last year was shown to contain a fine precipitate of sodium oxalate ? A solids sample from the extraction contactor #1 drain pipe from extraction contactor#1 proved to be mostly sodium aluminosilicate ? A liquid sample from the SSFT was shown to have elevated levels of oxalate anion compared to the expected concentration in the feed Visual inspection of the SSFT indicated the presence of precipitated or transferred solids, which were likely also in the Salt Solution Receipt Tank (SSRT). The presence of the solids coupled with agitation performed to maintain feed temperature resulted in oxalate solids migration through the MCU system and caused hydraulic issues that resulted in unplanned phase carryover from the extraction into the scrub, and ultimately the strip contactors. Not only did this carryover result in the Strip Effluent (SE) being pushed out of waste acceptance specification, but it resulted in the deposition of solids into several of the contactors. At the same time, extensive deposits of aluminosilicates were found in the drain tube in the extraction contactor #1. However it is not known at this time how the aluminosilicate solids are related to the oxalate solids. The solids were successfully cleaned out of the MCU system. However, future consideration must be given to the exclusion of oxalate solids into the MCU system. There were 53 recommendations for improving operations recently identified. Some additional considerations or additional details are provided below as recommendations. ? From this point on, IC-Anions analyses of the DSSHT should be part of the monthly routine analysis in order to spot negative trends in the oxalate leaving the MCU system. Care must be taken to monitor the oxalate content to watch for sudden precipitation of oxalate salts in the system. ? Conduct a study to optimize the cleaning strategy at ARP-MCU through decreasing the concentration or entirely eliminating the oxalic acid. ? The contents of the SSFT should remain unagitated. Routine visual observation should be maintained to ensure there is not a large buildup of solids. As water with agitation provided sufficient removal of the solids in the feed tank, it should be considered as a good means for dissolving oxalate solids if they are found in the future. ? Conduct a study to improve prediction of oxalate solubility in salt batch feed materials. As titanium and mercury have been found in various solids in this report, evaluate if either element plays a role in oxalate solubility during processing. ? Salt batch characterization focuses primarily on characterization and testing of unaltered Tank 21H material; however, non-typical feeds are developed through cleaning, washing, and/or sump transfers. As these solutions are processed through MCU, they may precipitate solids or reduce performance. Salt batch characterization and testing should be expanded to encompass a broader range of feeds that may be processed through ARPMCU.

  19. Olkiluoto 1 and 2 - Plant efficiency improvement and lifetime extension-project (PELE) implemented during outages 2010 and 2011

    SciTech Connect (OSTI)

    Kosonen, M.; Hakola, M. [Teollisuuden Voima Oyj, F- 27160 Eurajoki (Finland)

    2012-07-01

    Teollisuuden Voima Oyj (TVO) is a non-listed public company founded in 1969 to produce electricity for its stakeholders. TVO is the operator of the Olkiluoto nuclear power plant. TVO follows the principle of continuous improvement in the operation and maintenance of the Olkiluoto plant units. The PELE project (Plant Efficiency Improvement and Lifetime Extension), mainly completed during the annual outages in 2010 and 2011, and forms one part of the systematic development of Olkiluoto units. TVO maintains a long-term development program that aims at systematically modernizing the plant unit systems and equipment based on the latest technology. According to the program, the Olkiluoto 1 and Olkiluoto 2 plant units are constantly renovated with the intention of keeping them safe and reliable, The aim of the modernization projects is to improve the safety, reliability, and performance of the plant units. PELE project at Olkiluoto 1 was done in 2010 and at Olkiluoto 2 in 2011. The outage length of Olkiluoto 1 was 26 d 12 h 4 min and Olkiluoto 2 outage length was 28 d 23 h 46 min. (Normal service-outage is about 14 days including refueling and refueling-outage length is about seven days. See figure 1) The PELE project consisted of several single projects collected into one for coordinated project management. Some of the main projects were as follows: - Low pressure turbines: rotor, stator vane, casing and turbine instrumentation replacement. - Replacement of Condenser Cooling Water (later called seawater pumps) pumps - Replacement of inner isolation valves on the main steam lines. - Generator and the generator cooling system replacement. - Low voltage switchgear replacement. This project will continue during future outages. PELE was a success. 100 TVO employees and 1500 subcontractor employees participated in the project. The execution of the PELE projects went extremely well during the outages. The replacement of the low pressure turbines and seawater pumps improved the efficiency of the plant units, and a power increase of nearly 20 MW was achieved at both plant units. PELE wonderfully manifests one of the strategic goals of our company; developing the competence of our in-house personnel by working in projects. (authors)

  20. Overview of Common Mode Outages in Power Systems

    SciTech Connect (OSTI)

    Papic, Milorad; Awodele , Kehinde; Billinton, Roy; Dent, Chris; Eager, Dan; Hamoud, Gomaa; Jirutitijaroen, Panida; Kumbale, Murali; Mitra, Joydeep; Samaan, Nader A.; Schneider, Alex; Singh, Chanan

    2012-11-10

    This paper is a result of ongoing activity carried out by Probability Applications for Common Mode Events (PACME) Task Force under the Reliability Risk and Probability Applications (RRPA) Subcommittee. The paper is intended to constitute a valid source of information and references about dealing with common-mode outages in power systems reliability analysis. This effort involves reviewing published literature and presenting state-of-the-art research and practical applications in the area of common-mode outages. Evaluation of available outage statistics show that there is a definite need for collective effort from academia and industry to not only recommended procedures for data collection and monitoring but also to provide appropriate mathematical models to assess such events.

  1. Lassoing Line Outages in the Smart Power Grid

    E-Print Network [OSTI]

    Zhu, Hao

    2011-01-01

    Fast and accurate unveiling of power line outages is of paramount importance not only for preventing faults that may lead to blackouts, but also for routine monitoring and control tasks of the smart grid, including state estimation and optimal power flow. Existing approaches are either challenged by the \\emph{combinatorial complexity} issues involved, and are thus limited to identifying single- and double-line outages; or, they invoke less pragmatic assumptions such as \\emph{conditionally independent} phasor angle measurements available across the grid. Using only a subset of voltage phasor angle data, the present paper develops a near real-time algorithm for identifying multiple line outages at the affordable complexity of solving a quadratic program via block coordinate descent iterations. The novel approach relies on reformulating the DC linear power flow model as a \\emph{sparse} overcomplete expansion, and leveraging contemporary advances in compressive sampling and variable selection using the least-abso...

  2. U.S. - Canada Power System Outage Task Force: Final Report on...

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

    U.S. - Canada Power System Outage Task Force: Final Report on the Implementation of Task Force Recommendations U.S. - Canada Power System Outage Task Force: Final Report on the...

  3. The detection, prevention and mitigation of cascading outages in the power system 

    E-Print Network [OSTI]

    Song, Hongbiao

    2009-05-15

    This dissertation studies the causes and mechanism of power system cascading outages and develops new methods and new tools to help detect, prevent and mitigate the outages. Three effective solutions: a steady state control scheme, a transient...

  4. Obtaining statistics of cascading line outages spreading in an electric transmission network from standard utility data

    E-Print Network [OSTI]

    Dobson, Ian

    2015-01-01

    We show how to use standard transmission line outage historical data to obtain the network topology in such a way that cascades of line outages can be easily located on the network. Then we obtain statistics quantifying how cascading outages typically spread on the network. Processing real outage data is fundamental for understanding cascading and for evaluating the validity of the many different models and simulations that have been proposed for cascading in power networks.

  5. Joint Impact of Pathloss, Shadowing and Fast Fading -An Outage Formula for

    E-Print Network [OSTI]

    Coupechoux, Marceau

    Joint Impact of Pathloss, Shadowing and Fast Fading - An Outage Formula for Wireless Networks of pathloss, shadowing and fast fading, we de- rive an easily computable outage probability formula´eseaux cellulaires. i #12;Contents Contents ii 1 Introduction 1 2 Outage Probabilities 2 2.1 Shadowing impact

  6. Outage Probability of the Gaussian Free Space Optical Channel with Pulse-Position Modulation

    E-Print Network [OSTI]

    Guillén i Fàbregas, Albert

    Outage Probability of the Gaussian Free Space Optical Channel with Pulse-Position Modulation Nick adopt a quasi-static block fading model and study the outage probability of the channel under gains are possible by using power allocation techniques to minimise the outage probability. I

  7. Reduced-Outage-Probability Algorithms for Cross-Layer Call Admission Control in CDMA

    E-Print Network [OSTI]

    Blostein, Steven D.

    1 Reduced-Outage-Probability Algorithms for Cross-Layer Call Admission Control in CDMA Beamforming, increases outage probability in the physical layer. In this paper, we investigate the mitigation of the outage problem in the context of cross-layer performance, and propose CAC algorithms for code

  8. Outage Minimization for a Fading Wireless Link with Energy Harvesting Transmitter and Receiver

    E-Print Network [OSTI]

    1 Outage Minimization for a Fading Wireless Link with Energy Harvesting Transmitter and Receiver Abstract--This paper studies online power control policies for outage minimization in a fading wireless link with energy harvesting transmitter and receiver. The outage occurs when either the transmitter

  9. Outage Probability for Joint Processing Coordinated Multi-Point (JP-CoMP) Performance

    E-Print Network [OSTI]

    Coupechoux, Marceau

    Outage Probability for Joint Processing Coordinated Multi-Point (JP-CoMP) Performance Analysis Seminar 09 Mar. 2011 M. Coupechoux (TPT) Outage Prob. for JP-CoMP 09 Mar. 2011 1 / 48 #12;LTE and LTE Nets CoMP Figure: Evolution of the 3GPP Standards. M. Coupechoux (TPT) Outage Prob. for JP-CoMP 09 Mar

  10. Environmental determinants of unscheduled residential outages in the electrical power distribution of Phoenix, Arizona

    E-Print Network [OSTI]

    Environmental determinants of unscheduled residential outages in the electrical power distribution: Distribution Electricity Interruption Outage Reliability a b s t r a c t The sustainability of power requires knowledge of unscheduled outage sources, including environ- mental and social factors. Despite

  11. Outage Performance for Amplify-and-Forward Channels with an Unauthenticated Relay

    E-Print Network [OSTI]

    Swindlehurst, A. Lee

    Outage Performance for Amplify-and-Forward Channels with an Unauthenticated Relay Jing Huang and reliable message transmission via the secrecy outage probability (SOP) of the relay network. We first predictions of the preferred transmission policies from a secrecy outage perspective. I. INTRODUCTION

  12. Model-based congestion analysis during outage and system reconfiguration in GPRS networks

    E-Print Network [OSTI]

    Firenze, Università degli Studi di

    Model-based congestion analysis during outage and system reconfiguration in GPRS networks overlapping. In particular, we consider that one of the two cells is affected by an outage and we analyze resources become suddenly unavailable due to malfunctions. The occurrence of an outage is the typical event

  13. Outage Probability for Free-Space Optical Systems Over Slow Fading Channels With Pointing Errors

    E-Print Network [OSTI]

    Hranilovic, Steve

    Outage Probability for Free-Space Optical Systems Over Slow Fading Channels With Pointing Errors, Canada. Email: farid@grads.ece.mcmaster.ca, hranilovic@mcmaster.ca Abstract-- We investigate the outage errors. An expression for the outage probability is derived and we show that optimizing the transmit- ted

  14. Outage in a Cellular Network Overlaid with an Ad hoc Network: The Uplink Case

    E-Print Network [OSTI]

    Yanikomeroglu, Halim

    Outage in a Cellular Network Overlaid with an Ad hoc Network: The Uplink Case Arshdeep S. Kahlon}@sce.carleton.ca Abstract--We analyze the uplink outage probability at the randomly, but not necessarily independently nor, large-scale power control, and the knowledge of the initial outages in the absence of the secondary

  15. Tritium Reduction and Control in the Vacuum Vessel During TFTR Outage and Decommissioning *

    E-Print Network [OSTI]

    Tritium Reduction and Control in the Vacuum Vessel During TFTR Outage and Decommissioning * W nearly three years of D­T operations, TFTR underwent an extended outage during which large port covers of the torus, a three tier system was developed for the outage in order to reduce and control the free tritium

  16. Impact of the Secondary Network on the Outage Performance of the Primary Service

    E-Print Network [OSTI]

    Yanikomeroglu, Halim

    Impact of the Secondary Network on the Outage Performance of the Primary Service in Spectrum-- In this paper, we utilize stochastic geometry to analyze the primary service outage performance for spectrum parameters as well as the wireless environment on the primary service outage probability are analyzed. We

  17. Outage Analysis for MIMO Rician Channels and Channels with Partial CSI

    E-Print Network [OSTI]

    Lee, Yong Hoon

    Outage Analysis for MIMO Rician Channels and Channels with Partial CSI Won-Yong Shin, Sae the outage performance and diversity- multiplexing tradeoff (DMT), originally introduced by Zheng and Tse (CSIT). The asymptotic behaviors of the outage are analyzed in the limit of high signal-to-noise ratio

  18. The Outage Performance of Realtime Transmission in Multiple Asynchronous Relays Enhanced OFDM

    E-Print Network [OSTI]

    Gross, James

    The Outage Performance of Realtime Transmission in Multiple Asynchronous Relays Enhanced OFDM@mail.ustc.edu.cn Abstract--This paper1 considers the outage performance of multiple relays transmission in Orthogonal communication systems that need to meet tough latency and outage requirements. Different from previous works

  19. The Impact of Fading on the Outage Probability in Cognitive Radio Networks

    E-Print Network [OSTI]

    Loyka, Sergey

    1 The Impact of Fading on the Outage Probability in Cognitive Radio Networks Yaobin Wen, Sergey Loyka and Abbas Yongacoglu Abstract--This paper analyzes the outage probability in cog- nitive radio possible scenarios are classified into three cases based on typical outage events. When the average number

  20. On Outage Performance of Spectrum-Sharing Communication over M-Block Fading

    E-Print Network [OSTI]

    Shihada, Basem

    On Outage Performance of Spectrum-Sharing Communication over M-Block Fading AbdulRahman Alabbasi to the primary and secondary users. We minimize the secondary user's targeted outage probability over the block-fading channels. To protect the primary user, a statistical constraint on its targeted outage probability

  1. Information Outage Probability of Orthogonal Space-Time Block Codes over Hoyt Distributed

    E-Print Network [OSTI]

    Rontogiannis, Athanasios A.

    Information Outage Probability of Orthogonal Space-Time Block Codes over Hoyt Distributed Fading,tronto,mathio} @space.noa.gr Abstract- In this paper the information outage probabil- ity (IOP) of orthogonal space telecommunications applications. For instance, in [4] this model has been used in outage analysis of cellular mobile

  2. On Secrecy Outage Capacity of Fading Channels Under Relaxed Delay Constraints

    E-Print Network [OSTI]

    Koksal, Can Emre

    On Secrecy Outage Capacity of Fading Channels Under Relaxed Delay Constraints Onur Gungor, Can Emre delay constraints. More specif- ically, we extend the definition of outage secrecy capacity for single, we provide bounds on secrecy outage capacity with k + 1 block delay constraint. We show

  3. Outage Probability in a Multi-Cellular Network using Alamouti Scheme

    E-Print Network [OSTI]

    Coupechoux, Marceau

    Outage Probability in a Multi-Cellular Network using Alamouti Scheme Dorra Ben Cheikh , Jean to interference plus noise ratio (SINR) or equivalently the outage probability in flat Rayleigh fading. The system power from the interfering base stations. In the first case, a closed- form expression for the outage

  4. Tritium Reduction and Control in the Vacuum Vessel During TFTR Outage and Decommissioning*

    E-Print Network [OSTI]

    Tritium Reduction and Control in the Vacuum Vessel During TFTR Outage and Decommissioning* W years of D-T operations, TFTR underwent an extended outage during which large port covers were removed, a three tier system was developed for the outage in order to reduce and control the free tritium

  5. IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 58, NO. 11, NOVEMBER 2012 6825 Outage Probability Under Channel

    E-Print Network [OSTI]

    Loyka, Sergey

    IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 58, NO. 11, NOVEMBER 2012 6825 Outage Probability Abstract--Outage probability and capacity of a class of block- fading MIMO channels are considered under distributions. Compound outage probability defined as min (over the transmitted signal distribution) -max (over

  6. IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 57, NO. 2, FEBRUARY 2009 319 Outage Probability of

    E-Print Network [OSTI]

    Bhashyam, Srikrishna

    IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 57, NO. 2, FEBRUARY 2009 319 Outage Probability on the outage probability of multiple-input single-output (MISO) fading channels. Channel state information. With perfect CSIR, under a short-term power con- straint, we determine: (a) the outage probability

  7. Cut-off Rate based Outage Probability Analysis of Frequency Hopping Mobile Radio under Jamming

    E-Print Network [OSTI]

    Yýlmaz, Özgür

    Cut-off Rate based Outage Probability Analysis of Frequency Hopping Mobile Radio under Jamming--This paper deals with the achievable spectral ef- ficiency and outage analysis of short burst frequency hopping (FH) mobile radios under heavy jamming scenarios. With the use of outage probability analysis

  8. PRE-PRINT, IEEE TRANS. INFORM. TH. Outage Theorems for MIMO Block Fading

    E-Print Network [OSTI]

    Varanasi, Mahesh K.

    PRE-PRINT, IEEE TRANS. INFORM. TH. Outage Theorems for MIMO Block Fading Channels Narayan Prasad probability (FEP) of space-time codes and the outage probability over general block fading multi-input multi are defined for a given rate and it is shown that average FEPs arbitrarily close to the respective outage

  9. IEEE COMMUNICATIONS LETTERS, VOL. 17, NO. 1, JANUARY 2013 127 Capacity of Zero-Outage Scheme

    E-Print Network [OSTI]

    Candan, Cagatay

    IEEE COMMUNICATIONS LETTERS, VOL. 17, NO. 1, JANUARY 2013 127 Capacity of Zero-Outage Scheme Under Imprecise Channel State Information C¸ a~gatay Candan Abstract--The capacity of zero-outage scheme-to-noise-ratio fluctuates and the scheme suffers from com- munication outages. Exact analytical expressions characterizing

  10. Mitigating Macro-Cell Outage in LTE-Advanced Deployments Rajarajan Sivaraj

    E-Print Network [OSTI]

    Greenberg, Albert

    Mitigating Macro-Cell Outage in LTE-Advanced Deployments Rajarajan Sivaraj , Ioannis Broustis , N (eNB). Therefore, the network operator's response to outage scenarios needs to be fast and efficient, in order to minimize any degradation in the Quality of Service (QoS). In this paper, we propose an outage

  11. Analysis and Computation of the Outage Probability of Discrete-Input Block-Fading Channels

    E-Print Network [OSTI]

    Guillén i Fàbregas, Albert

    Analysis and Computation of the Outage Probability of Discrete-Input Block-Fading Channels Khoa D IS ELIGIBLE FOR THE STUDENT PAPER AWARD. In this paper, we propose a tight lower bound to the outage is not supported by a particular channel realization [1], [2]. This probability is named the information outage

  12. Outage Capacity of the Fading Relay Channel in the Low SNR Regime

    E-Print Network [OSTI]

    Tse, David

    Outage Capacity of the Fading Relay Channel in the Low SNR Regime A. Salman Avestimehr and David N at the outage capacity of the fading relay channel with half-duplex constraint in the low SNR regime. First we. In this case we show that a Bursty Amplify-Forward (BAF) protocol is optimal and achieves the outage capacity

  13. Using Outage History to Exclude High-Risk Satellites from GBAS Corrections

    E-Print Network [OSTI]

    Stanford University

    Using Outage History to Exclude High-Risk Satellites from GBAS Corrections SAM PULLEN and PER ENGE constellation are not expected to violate this assumption. A study of unscheduled GPS satellite outages from. In addition, satellites that have recently experienced unscheduled outages are more likely to suffer

  14. MIMO Outage Capacity in the High SNR Regime Narayan Prasad Mahesh K. Varanasi

    E-Print Network [OSTI]

    Varanasi, Mahesh K.

    MIMO Outage Capacity in the High SNR Regime Narayan Prasad Mahesh K. Varanasi NEC Labs. America channel with coherent reception and pro- vide a sharp characterization of the outage capacity in the form on the outage capacities un- der a long-term and a short-term power constraint as well as on the delay

  15. On the Impact of Mobility on Outage Probability in Cellular Networks

    E-Print Network [OSTI]

    Coupechoux, Marceau

    On the Impact of Mobility on Outage Probability in Cellular Networks Jean-Marc Kelif France Telecom an analytical study of the mobility in cellular networks and its impact on quality of service and outage power. It allows us to analyze users mobility and to derive expressions of the outage probability. We

  16. IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 62, NO. 2, FEBRUARY 2014 699 Outage Probability in

    E-Print Network [OSTI]

    Durrani, Salman

    IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 62, NO. 2, FEBRUARY 2014 699 Outage Probability, IEEE, and Xiangyun Zhou, Member, IEEE Abstract--This paper analyzes the outage performance in finite the outage probability at any arbitrary location of an arbitrarily-shaped finite wireless network: (i

  17. Benefits of Multiple Transmit Antennas in Secure Communication: A Secrecy Outage Viewpoint

    E-Print Network [OSTI]

    Zhou, Xiangyun "Sean"

    Benefits of Multiple Transmit Antennas in Secure Communication: A Secrecy Outage Viewpoint Xi Zhang confusing the eavesdrop- per by delivering artificial noise. A recently developed secrecy outage formulation the security performance. We show that an arbitrarily low secrecy outage probability cannot be achieved

  18. Asymptotic Outage Analysis of General Motion-Invariant Ad Hoc Networks

    E-Print Network [OSTI]

    Haenggi, Martin

    Asymptotic Outage Analysis of General Motion-Invariant Ad Hoc Networks Riccardo Giacomelli Dept Dame, IN, USA E-mail: mhaenggi@nd.edu Abstract--The outage analysis of networks with randomly a homogeneous Poisson point process. In this paper, we show that in great generality, the outage probability

  19. Analysis of BGP Prefix Origins During Google's May 2005 Outage Tao Wan Paul C. van Oorschot

    E-Print Network [OSTI]

    Van Oorschot, Paul

    Analysis of BGP Prefix Origins During Google's May 2005 Outage Tao Wan Paul C. van Oorschot School- vice outage is BGP. To pursue the latter possibility further, we explore how BGP was functioning during prior to the service outage. As a result, 49.1% of ASes re-advertising routes for 64

  20. Minimum Duration Outages in Rayleigh Fading Channels Jie Lai and Narayan B. Mandayam

    E-Print Network [OSTI]

    Mandayam, Narayan

    Minimum Duration Outages in Rayleigh Fading Channels Jie Lai and Narayan B. Mandayam WINLAB@winlab.rutgers.edu Abstract Minimum duration outages have been introduced in [1, 2] for lognormal shadow fading where the durations of signal fades were considered in evaluating outages. In this pa­ per we develop and analyze

  1. Service Outage Based Power and Rate Allocation Jianghong Luo, Lang Lin, Roy Yates, and Predrag Spasojevic

    E-Print Network [OSTI]

    Yates, Roy

    1 Service Outage Based Power and Rate Allocation Jianghong Luo, Lang Lin, Roy Yates, and Predrag Spasojevi´c Abstract--This paper combines the concepts of ergodic capac- ity and capacity versus outage for fading channels, and explores variable rate transmissions under a service outage constraint in a block

  2. Joint Power Control and Beamforming Codebook Design for MISO Channels under the Outage

    E-Print Network [OSTI]

    Yu, Wei

    Joint Power Control and Beamforming Codebook Design for MISO Channels under the Outage Criterion is formulated as the minimization of the outage probability subject to the transmit power constraint beamforming and power codebook sizes. We show that as the outage probability decreases, optimal joint design

  3. Outage Probability of Amplify-and-Forward Opportunistic Relaying with Multiple Interferers

    E-Print Network [OSTI]

    Lee, Jae Hong

    Outage Probability of Amplify-and-Forward Opportunistic Relaying with Multiple Interferers over channels. We derive the closed-form expression of the outage probability for the AF opportunistic relaying derive the analytical results. Also, in [9], the authors investigate the outage behavior of the dual

  4. Copyright 2010 IEEE. Reprinted from: Propagation of load shed in cascading line outages simulated by OPA

    E-Print Network [OSTI]

    Copyright © 2010 IEEE. Reprinted from: Propagation of load shed in cascading line outages simulated, February 2010 c IEEE 2010 Propagation of load shed in cascading line outages simulated by OPA Janghoon Kim transmission line outages on the 300 bus IEEE test system. We discuss the effectiveness of the estimator

  5. Preventing power outages Power system contingency analysis on the GPU

    E-Print Network [OSTI]

    Vuik, Kees

    problem. Moreover, the power system has to keep functioning properly even when a transmission line failsPreventing power outages Power system contingency analysis on the GPU To provide electricity generators, nuclear power plants, wind turbines, etc.) and a network of lines and cables to transmit

  6. Onsite Wastewater Treatment Systems: Responding to Power Outages and Floods 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Mechell, Justin; Alexander, Rachel

    2008-10-23

    People and the environment can be harmed if a home's onsite wastewater treatment system does not work properly after a flood or power outage. This publication explains the steps to take after such an event to get the system back into service. 4 pp...

  7. A framework and review of customer outage costs: Integration and analysis of electric utility outage cost surveys

    SciTech Connect (OSTI)

    Lawton, Leora; Sullivan, Michael; Van Liere, Kent; Katz, Aaron; Eto, Joseph

    2003-11-01

    A clear understanding of the monetary value that customers place on reliability and the factors that give rise to higher and lower values is an essential tool in determining investment in the grid. The recent National Transmission Grid Study recognizes the need for this information as one of growing importance for both public and private decision makers. In response, the U.S. Department of Energy has undertaken this study, as a first step toward addressing the current absence of consistent data needed to support better estimates of the economic value of electricity reliability. Twenty-four studies, conducted by eight electric utilities between 1989 and 2002 representing residential and commercial/industrial (small, medium and large) customer groups, were chosen for analysis. The studies cover virtually all of the Southeast, most of the western United States, including California, rural Washington and Oregon, and the Midwest south and east of Chicago. All variables were standardized to a consistent metric and dollar amounts were adjusted to the 2002 CPI. The data were then incorporated into a meta-database in which each outage scenario (e.g., the lost of electric service for one hour on a weekday summer afternoon) is treated as an independent case or record both to permit comparisons between outage characteristics and to increase the statistical power of analysis results. Unadjusted average outage costs and Tobit models that estimate customer damage functions are presented. The customer damage functions express customer outage costs for a given outage scenario and customer class as a function of location, time of day, consumption, and business type. One can use the damage functions to calculate outage costs for specific customer types. For example, using the customer damage functions, the cost experienced by an ''average'' customer resulting from a 1 hour summer afternoon outage is estimated to be approximately $3 for a residential customer, $1,200 for small-medium commercial and industrial customer, and $82,000 for large commercial and industrial customer. Future work to improve the quality and coverage of information on the value of electricity reliability to customers is described.

  8. Secrecy Outage Capacity of Fading Channels Onur Gungor, Jian Tan, Can Emre Koksal, Hesham El-Gamal, Ness B. Shroff

    E-Print Network [OSTI]

    Koksal, Can Emre

    Secrecy Outage Capacity of Fading Channels Onur Gungor, Jian Tan, Can Emre Koksal, Hesham El under an outage constraint. More specifically, we extend the definition of outage capacity to account different assumptions on the transmitter CSI (Channel state information). First, we find the outage secrecy

  9. 1958 JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 28, NO. 13, JULY 1, 2010 Outage Statistics in a Waveplate Hinge Model of

    E-Print Network [OSTI]

    Biondini, Gino

    1958 JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 28, NO. 13, JULY 1, 2010 Outage Statistics sampling and the cross-entropy method. The outage probability is then obtained combining these results with the outage map method, allowing the fraction of bands with unac- ceptable outage probabilities

  10. 1326 IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 51, NO. 4, APRIL 2005 Outage Capacities and Optimal Power Allocation for

    E-Print Network [OSTI]

    Jindal, Nihar

    1326 IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 51, NO. 4, APRIL 2005 Outage Capacities, and Andrea Goldsmith, Fellow, IEEE Abstract--We derive the outage capacity region of an -user fading multiple information (CSI). The outage capacity region is implicitly obtained by deriving the outage probability region

  11. Outage Constrained Secrecy Rate Maximization Using Cooperative Jamming

    E-Print Network [OSTI]

    Luo, Shuangyu; Petropulu, Athina

    2012-01-01

    We consider a Gaussian MISO wiretap channel, where a multi-antenna source communicates with a single-antenna destination in the presence of a single-antenna eavesdropper. The communication is assisted by multi-antenna helpers that act as jammers to the eavesdropper. Each helper independently transmits noise which lies in the null space of the channel to the destination, thus creates no interference to the destination. Under the assumption that there is eavesdropper channel uncertainty, we derive the optimal covariance matrix for the source signal so that the secrecy rate is maximized subject to probability of outage and power constraints. Assuming that the eavesdropper channels follow zero-mean Gaussian model with known covariances, we derive the outage probability in a closed form. Simulation results in support of the analysis are provided.

  12. Homeowners: Respond to Power Outages | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing Tool Fits the Bill FinancingDepartment ofPower Outages Homeowners: Respond to Power

  13. Survey of tools for risk assessment of cascading outages

    SciTech Connect (OSTI)

    Papic, Milorad; Bell, Keith; Chen, Yousu; Dobson, Ian; Fonte, Louis; Haq, Enamul; Hines, Paul; Kirschen, Daniel; Luo, Xiaochuan; Miller, Stephen; Samaan, Nader A.; Vaiman, Marianna; Varghese, Matthew; Zhang, Pei

    2011-10-01

    Abstract-This paper is a result of ongoing activity carried out by Understanding, Prediction, Mitigation and Restoration of Cascading Failures Task Force under IEEE Computer Analytical Methods Subcommittee (CAMS). The task force's previous papers [1, 2] are focused on general aspects of cascading outages such as understanding, prediction, prevention and restoration from cascading failures. This is the second of two new papers, which extend this previous work to summarize the state of the art in cascading failure risk analysis methodologies and modeling tools. The first paper reviews the state of the art in methodologies for performing risk assessment of potential cascading outages [3]. This paper describes the state of the art in cascading failure modeling tools, documenting the view of experts representing utilities, universities and consulting companies. The paper is intended to constitute a valid source of information and references about presently available tools that deal with prediction of cascading failure events. This effort involves reviewing published literature and other documentation from vendors, universities and research institutions. The assessment of cascading outages risk evaluation is in continuous evolution. Investigations to gain even better understanding and identification of cascading events are the subject of several research programs underway aimed at solving the complexity of these events that electrical utilities face today. Assessing the risk of cascading failure events in planning and operation for power transmission systems require adequate mathematical tools/software.

  14. Risk Assessment of Cascading Outages: Methodologies and Challenges

    SciTech Connect (OSTI)

    Vaiman, Marianna; Bell, Keith; Chen, Yousu; Chowdhury, Badrul; Dobson, Ian; Hines, Paul; Papic, Milorad; Miller, Stephen; Zhang, Pei

    2012-05-31

    Abstract- This paper is a result of ongoing activity carried out by Understanding, Prediction, Mitigation and Restoration of Cascading Failures Task Force under IEEE Computer Analytical Methods Subcommittee (CAMS). The task force's previous papers are focused on general aspects of cascading outages such as understanding, prediction, prevention and restoration from cascading failures. This is the first of two new papers, which extend this previous work to summarize the state of the art in cascading failure risk analysis methodologies and modeling tools. This paper is intended to be a reference document to summarize the state of the art in the methodologies for performing risk assessment of cascading outages caused by some initiating event(s). A risk assessment should cover the entire potential chain of cascades starting with the initiating event(s) and ending with some final condition(s). However, this is a difficult task and heuristic approaches and approximations have been suggested. This paper discusses different approaches to this and suggests directions for future development of methodologies. The second paper summarizes the state of the art in modeling tools for risk assessment of cascading outages.

  15. Study, outlines why outages go long, short, or on-time

    SciTech Connect (OSTI)

    Not Available

    1993-09-01

    A recent report by a nuclear industry professional, based on a survey of outage managers at US nuclear power plants, declares that [open quotes]preplanned outage schedules appear to be grossly inaccurate, and the outage management planners and schedulers do not have a grasp of the requirements and/or the resources needed to complete the actual activities on schedule.[close quotes] It declares that [open quotes]the scheduled duration of a planned outage must be realistic.[close quotes] The study identifies personnel, planning and scheduling, and equipment/hardware as [open quotes]the primary reasons why refueling outages and outage activities finished ahead of, right on, or behind schedule.[close quotes

  16. Cascading Power Outages Propagate Locally in an Influence Graph that is not the Actual Grid Topology

    E-Print Network [OSTI]

    Hines, Paul D H; Rezaei, Pooya

    2015-01-01

    In a cascading power transmission outage, component outages propagate non-locally; after one component outages, the next failure may be very distant, both topologically and geographically. As a result, simple models of topological contagion do not accurately represent the propagation of cascades in power systems. However, cascading power outages do follow patterns, some of which are useful in understanding and reducing blackout risk. This paper describes a method by which the data from many cascading failure simulations can be transformed into a graph-based model of influences that provides actionable information about the many ways that cascades propagate in a particular system. The resulting "influence graph" model is Markovian, since component outage probabilities depend only on the outages that occurred in the prior generation. To validate the model we compare the distribution of cascade sizes resulting from n-2 contingencies in a 2896 branch test case to cascade sizes in the influence graph. The two dist...

  17. Separating the Effect of Independent Interference Sources with Rayleigh Faded Signal Link: Outage Analysis and Applications

    E-Print Network [OSTI]

    Kahlon, Arshdeep S; Periyalwar, Shalini; Yanikomeroglu, Halim

    2012-01-01

    We show that, for independent interfering sources and a signal link with exponentially distributed received power, the total probability of outage can be decomposed as a simple expression of the outages from the individual interfering sources. We give a mathematical proof of this result, and discuss some immediate implications, showing how it results in important simplifications to statistical outage analysis. We also discuss its application to two active topics of study: spectrum sharing, and sum of interference powers (e.g., lognormal) analysis.

  18. A Study of Outage Management Practices at Selected U.S. Nuclear Plants

    SciTech Connect (OSTI)

    Lin, James C. [ABSG Consulting Inc., Irvine, CA (United States)

    2002-07-01

    This paper presents insights gained from a study of the outage management practices at a number of U.S. nuclear plants. The objective of the study was to conduct an in-depth review of the current practices of outage management at these selected plants and identify important factors that have contributed to the recent success of their outage performance. Two BWR-4, three BWR-6, and two 3-loop Westinghouse PWR plants were selected for this survey. The results of this study can be used to formulate outage improvement efforts for nuclear plants in other countries. (author)

  19. Analysis of allowed outage times at the Byron Generating Station

    SciTech Connect (OSTI)

    Cho, N.Z.; Chu, T.L.; Xue, D.; Bozoki, G.E.; Youngblood, R.W.

    1986-06-01

    This report provides a critical review of the methods used in WCAP-10526 which proposed that allowed outage times (AOTs) for a number of safety systems in the Byron Generating Station be increased from 3 to 7 days, and presents an independent estimate of the change in risk involved in the AOT extension. It also presents results of several sensitivity studies. Also included are a survey of methods that can be used to evaluate nuclear power plant technical specifications and a description of pairwise importance measures. 53 tabs.

  20. Property:OutagePhoneNumber | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report Url Jump to: navigation,News/LinkUtility JumpOutagePhoneNumber

  1. Number and propagation of line outages in cascading events in electric power transmission systems

    E-Print Network [OSTI]

    Dobson, Ian

    Number and propagation of line outages in cascading events in electric power transmission systems that progressively weakens the system. Large electric power transmission systems occasionally have cascading failures of transmission lines. The multiple mechanisms involved these cascading outages are many and varied, and the power

  2. Quantitative evaluation of savings in outage costs by using emergency actions strategy

    SciTech Connect (OSTI)

    Akhtar, A.; Asuhaimi, A.; Shaibon, H. [Univ. Teknologi Malaysia, Johor Bharu (Malaysia); Lo, K.L. [Univ. of Strathclyde, Glasgow (United Kingdom)

    1995-12-31

    This paper presents the results of a study carried out to assess the savings in consumer outage costs that can be accrued as a result of implementing Emergency Actions Strategy. The use of Emergency Actions Strategy plays a significant role in curtailing the consumer outage costs ensuing from unreliable electric service. In order to calculate the savings in outage costs, the probabilistic framework of the frequency and duration method has been used in conjunction with emergency actions. At first, the outage costs of various consumer sectors are estimated without considering the emergency actions. Secondly, the consumer outage costs are calculated by combining the frequency and duration method, and unserved energy with the emergency actions invoked. The results of the savings in consumer outage costs that can be accrued by utilizing Emergency Actions Strategy are presented for a synthetic system. The results of the study show that substantial savings in consumer outage costs are obtained by devising and implementing emergency actions strategy in situations of capacity outages. The results are of particular relevance and utility to the underdeveloped and developing countries where capacity shortages occur quite frequently. These results also suggest the importance of emergency actions strategy for electric utilities in reducing the consumer economic losses arising from unreliable electric service.

  3. Risk Assessment of Cascading Outages: Part I - Overview of Methodologies

    SciTech Connect (OSTI)

    Vaiman, Marianna; Bell, Keith; Chen, Yousu; Chowdhury, Badrul; Dobson, Ian; Hines, Paul; Papic, Milorad; Miller, Stephen; Zhang, Pei

    2011-07-31

    This paper is a result of ongoing activity carried out by Understanding, Prediction, Mitigation and Restoration of Cascading Failures Task Force under IEEE Computer Analytical Methods Subcommittee (CAMS). The task force's previous papers are focused on general aspects of cascading outages such as understanding, prediction, prevention and restoration from cascading failures. This is the first of two new papers, which will extend this previous work to summarize the state of the art in cascading failure risk analysis methodologies and modeling tools. This paper is intended to be a reference document to summarize the state of the art in the methodologies for performing risk assessment of cascading outages caused by some initiating event(s). A risk assessment should cover the entire potential chain of cascades starting with the initiating event(s) and ending with some final condition(s). However, this is a difficult task and heuristic approaches and approximations have been suggested. This paper discusses diffeent approaches to this and suggests directions for future development of methodologies.

  4. 3232 IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 54, NO. 7, JULY 2008 On the Outage Capacity Distribution of Correlated

    E-Print Network [OSTI]

    Loyka, Sergey

    3232 IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 54, NO. 7, JULY 2008 On the Outage Capacity in the amplify-and-forward mode. This paper inves- tigates instantaneous signal-to-noise ratio (SNR) and outage. This SNR, as well as the outage capacity, decreases with correlation. For a large number of transmit

  5. On the Duality between Outage Capacity and Multiuser Scheduling Gain for MIMO Systems and the Impact of Shadow Fading*

    E-Print Network [OSTI]

    Dai, Huaiyu

    On the Duality between Outage Capacity and Multiuser Scheduling Gain for MIMO Systems on individual link outage capacity and multiuser scheduling gain for MIMO systems are quantified, which admits fading, while significantly limits the channel outage capacity as expected, actually enhances

  6. Detecting Internet Outages with Active Probing USC/ISI Technical Report ISI-TR-672, May 2011

    E-Print Network [OSTI]

    Heidemann, John

    Detecting Internet Outages with Active Probing USC/ISI Technical Report ISI-TR-672, May 2011 Lin on the Internet, understanding its reliability is more important than ever. Network outages vary in scope and cause, from the intentional shutdown of the Egyptian Inter- net in February 2011, to outages caused

  7. IEEE TRANSACTIONS ON COMMUNICATIONS, ACCEPTED FOR PUBLICATION 1 Calculating Outage Probability of Block Fading Channels Based on

    E-Print Network [OSTI]

    Yýlmaz, Özgür

    IEEE TRANSACTIONS ON COMMUNICATIONS, ACCEPTED FOR PUBLICATION 1 Calculating Outage Probability channels present a realistic model in many communication scenarios. We propose a method by which the outage generating functions helps obtain outage probabilities in various cases such as wideband noise jamming

  8. 4350 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 8, NO. 8, AUGUST 2009 Outage, Local Throughput, and Capacity of

    E-Print Network [OSTI]

    Haenggi, Martin

    4350 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 8, NO. 8, AUGUST 2009 Outage, Local Throughput, and Capacity of Random Wireless Networks Martin Haenggi, Senior Member, IEEE Abstract--Outage parameter, the so- called spatial contention, is defined. It measures the slope of the outage probability

  9. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 10, NO. 2, FEBRUARY 2011 407 Outage Probability and Optimum Power Allocation for

    E-Print Network [OSTI]

    Kim, Il-Min

    IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 10, NO. 2, FEBRUARY 2011 407 Outage Probability-duplex mode. For this system, we first derive a tight lower bound of outage probability, which is very close to the exact outage probability in the whole signal-to-noise ratio (SNR) range irrespective of the values

  10. Detecting Internet Outages with Precise Active Probing USC/ISI Technical Report ISI-TR-678b

    E-Print Network [OSTI]

    Heidemann, John

    Detecting Internet Outages with Precise Active Probing (extended) USC/ISI Technical Report ISI Japanese earthquake, to the thousands of small outages caused by localized accidents, and human error, motivating our new system to detect network outages by active probing. We show that a single computer can

  11. 2120 IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 59, NO. 5, JUNE 2010 Outage Probability of Multiuser Relay Networks in

    E-Print Network [OSTI]

    Elkashlan, Maged

    2120 IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 59, NO. 5, JUNE 2010 Outage Probability and exact analysis is conducted to analyze the outage probability of MRNs under dissimilar Nakagami-m fading conditions. More specifically, we derive new closed-form expressions for the outage probability and the prob

  12. IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 54, NO. 4, APRIL 2008 1423 Approaching the Zero-Outage Capacity of

    E-Print Network [OSTI]

    Barry, John R.

    IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 54, NO. 4, APRIL 2008 1423 Approaching the Zero-Outage-defined outage capacity. A transmitter with channel knowledge can achieve this capacity by a combination of eigen to approach the zero-outage capacity of the MIMO-OFDM channel; it is sufficient instead to use a combination

  13. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 9, NO. 3, MARCH 2010 1139 Outage Probability of Multi-Hop

    E-Print Network [OSTI]

    Kim, Il-Min

    IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 9, NO. 3, MARCH 2010 1139 Outage Probability--The outage probability of multi-hop amplify-and- forward relay systems with multiple relays is analyzed. Previ- ously, the outage probability of the two-hop system with multiple relays had been analyzed

  14. IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 52, NO. 2, FEBRUARY 2006 375 Outage Analysis of Coded Cooperation

    E-Print Network [OSTI]

    Nosratinia, Aria

    IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 52, NO. 2, FEBRUARY 2006 375 Outage Analysis of Coded-based methods. This work develops expressions for outage probability of coded cooperation. In this work, each constraints. Outage expressions confirm that full diversity is achieved by coded cooperation. This shows

  15. IEEE SIGNAL PROCESSING LETTERS, VOL. 14, NO. 6, JUNE 2007 377 Outage Analysis and Optimal Power Allocation for

    E-Print Network [OSTI]

    Su, Weifeng

    IEEE SIGNAL PROCESSING LETTERS, VOL. 14, NO. 6, JUNE 2007 377 Outage Analysis and Optimal Power. Ray Liu, Fellow, IEEE Abstract--In this letter, a novel approach for outage probability analysis on that approximation, an outage probability bound is derived which proves to be tight at high SNR. Based on the derived

  16. 3172 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 8, NO. 6, JUNE 2009 On Multicast Beamforming for Minimum Outage

    E-Print Network [OSTI]

    Sidiropoulos, Nikolaos D.

    Beamforming for Minimum Outage Vassilis Ntranos, Nicholas D. Sidiropoulos, and Leandros Tassiulas Abstract--The multicast beamforming problem is considered from the viewpoint of minimizing outage probability subject (locations) and variances (spreads). It is shown that minimizing outage probability subject to a transmit

  17. IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 59, NO. 6, JUNE 2011 1731 On Outage Probability and Diversity-Multiplexing

    E-Print Network [OSTI]

    Loyka, Sergey

    IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 59, NO. 6, JUNE 2011 1731 On Outage Probability antennas and the relays have a single one. Compact closed-form expressions are obtained for the outage probability under i.i.d. and correlated Rayleigh-fading links. Low-outage approxima- tions are derived, which

  18. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 24, NO. 3, AUGUST 2009 1633 Direct Calculation of Line Outage Distribution Factors

    E-Print Network [OSTI]

    Fu, Yong

    Outage Distribution Factors Jiachun Guo, Yong Fu, Member, IEEE, Zuyi Li, Member, IEEE, and Mohammad Shahidehpour, Fellow, IEEE Abstract--Line outage distribution factors (LODFs) are utilized to perform of LODFs, especially with multiple-line outages, could speed up contingency analyses and improve

  19. Variation of PMD-induced Outage Rates and Durations with Link Length on Buried Standard Single-mode Fibers

    E-Print Network [OSTI]

    Kansas, University of

    Variation of PMD-induced Outage Rates and Durations with Link Length on Buried Standard Single, Overland Park, Kansas Abstract: From first-order polarization-mode dispersion (PMD) outage analysis using that the outage rates increase monotonically with link length, although not linearly. © 2005 Optical Society

  20. The impact of fuel cladding failure events on occupational radiation exposures at nuclear power plants: Case study, PWR (pressurized-water reactor) during an outage

    SciTech Connect (OSTI)

    Moeller, M.P.; Martin, G.F.; Kenoyer, J.L.

    1987-08-01

    This report is the second in a series of case studies designed to evaluate the magnitude of increase in occupational radiation exposures at commercial US nuclear power plants resulting from small incidents or abnormal events. The event evaluated is fuel cladding failure, which can result in elevated primary coolant activity and increased radiation exposure rates within a plant. For this case study, radiation measurements were made at a pressurized-water reactor (PWR) during a maintenance and refueling outage. The PWR had been operating for 22 months with fuel cladding failure characterized as 105 pin-hole leakers, the equivalent of 0.21% failed fuel. Gamma spectroscopy measurements, radiation exposure rate determinations, thermoluminescent dosimeter (TLD) assessments, and air sample analyses were made in the plant's radwaste, pipe penetration, and containment buildings. Based on the data collected, evaluations indicate that the relative contributions of activation products and fission products to the total exposure rates were constant over the duration of the outage. This constancy is due to the significant contribution from the longer-lived isotopes of cesium (a fission product) and cobalt (an activation product). For this reason, fuel cladding failure events remain as significant to occupational radiation exposure during an outage as during routine operations. As documented in the previous case study (NUREG/CR-4485 Vol. 1), fuel cladding failure events increased radiation exposure rates an estimated 540% at some locations of the plant during routine operations. Consequently, such events can result in significantly greater radiation exposure rates in many areas of the plant during the maintenance and refueling outages than would have been present under normal fuel conditions.

  1. Impact of outages on GPRS service availability General Packet Radio Service has been developed to enhance the GSM telecommunication system with the addition of

    E-Print Network [OSTI]

    Firenze, Università degli Studi di

    Impact of outages on GPRS service availability General Packet Radio Service has been developed to those of outage is not a satisfactory measure to know. During outages, there is an accumulation of users to the users. A study on the impact of outages on GPRS service availability is being conducted in the framework

  2. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 2, NO. 5, SEPTEMBER 2003 865 Exact Outage Probability for Equal Gain Combining With Cochannel

    E-Print Network [OSTI]

    Blostein, Steven D.

    IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 2, NO. 5, SEPTEMBER 2003 865 Exact Outage- plementation complexity. We present a new outage performance analysis for EGC in mobile cellular radio systems of outage and 2) the existing method can lead to overly op- timistic outage performance prediction

  3. Normal Distribution

    E-Print Network [OSTI]

    User

    NORMAL DlSTRlBUTION TABLE. Entries represent the area under the standardized normal distribution from -w to z, Pr(Z

  4. Fast Detection and Mitigation of Cascading Outages in the Power System 

    E-Print Network [OSTI]

    Pang, Chengzong

    2012-02-14

    This dissertation studies the causes and mechanism of power system cascading outages and proposes the improved interactive scheme between system-wide and local levels of monitoring and control to quickly detect, classify and mitigate the cascading...

  5. Draft!07"18"2011! 1 Turning the Tide on Outages1

    E-Print Network [OSTI]

    Amin, S. Massoud

    !programs!of!replacement,!rehabilitation!and!new!investment!in!the! U.S.!infrastructure.! ! Focusing!on!the!electric!power!sector,!the!power!outages!and!power!quality!whether!the!carrying!capacity!or!safety!margin!will!exist! to!support!anticipated!demand!is!in!question.! ! To!assess!impacts!using!actual!electric!power!outage!construction!expenditures!have!lagged! behind!asset!depreciation.!This!has!resulted!in!a!mode!of!operation!of!the!system

  6. Open Season in Sacramento

    E-Print Network [OSTI]

    Brosnan, Douglas

    2009-01-01

    egislative Open Season in Sacramento Douglas Brosnan, MD, JDs open season again in Sacramento: The legislative session

  7. OTRA-THS MAC to reduce Power Outage Data Collection Latency in a smart meter network

    SciTech Connect (OSTI)

    Garlapati, Shravan K; Kuruganti, Phani Teja; Buehrer, Richard M; Reed, Jeffrey H

    2014-01-01

    The deployment of advanced metering infrastructure by the electric utilities poses unique communication challenges, particularly as the number of meters per aggregator increases. During a power outage, a smart meter tries to report it instantaneously to the electric utility. In a densely populated residential/industrial locality, it is possible that a large number of smart meters simultaneously try to get access to the communication network to report the power outage. If the number of smart meters is very high of the order of tens of thousands (metropolitan areas), the power outage data flooding can lead to Random Access CHannel (RACH) congestion. Several utilities are considering the use of cellular network for smart meter communications. In 3G/4G cellular networks, RACH congestion not only leads to collisions, retransmissions and increased RACH delays, but also has the potential to disrupt the dedicated traffic flow by increasing the interference levels (3G CDMA). In order to overcome this problem, in this paper we propose a Time Hierarchical Scheme (THS) that reduces the intensity of power outage data flooding and power outage reporting delay by 6/7th, and 17/18th when compared to their respective values without THS. Also, we propose an Optimum Transmission Rate Adaptive (OTRA) MAC to optimize the latency in power outage data collection. The analysis and simulation results presented in this paper show that both the OTRA and THS features of the proposed MAC results in a Power Outage Data Collection Latency (PODCL) that is 1/10th of the 4G LTE PODCL.

  8. Status Report on the Development of Micro-Scheduling Software for the Advanced Outage Control Center Project

    SciTech Connect (OSTI)

    Shawn St. Germain; Kenneth Thomas; Ronald Farris; Jeffrey Joe

    2014-09-01

    The long-term viability of existing nuclear power plants (NPPs) in the United States (U.S.) is dependent upon a number of factors, including maintaining high capacity factors, maintaining nuclear safety, and reducing operating costs, particularly those associated with refueling outages. Refueling outages typically take 20-30 days, and for existing light water NPPs in the U.S., the reactor cannot be in operation during the outage. Furthermore, given that many NPPs generate between $1-1.5 million/day in revenue when in operation, there is considerable interest in shortening the length of refueling outages. Yet, refueling outages are highly complex operations, involving multiple concurrent and dependent activities that are difficult to coordinate. Finding ways to improve refueling outage performance while maintaining nuclear safety has proven to be difficult. The Advanced Outage Control Center project is a research and development (R&D) demonstration activity under the Light Water Reactor Sustainability (LWRS) Program. LWRS is a R&D program which works with industry R&D programs to establish technical foundations for the licensing and managing of long-term, safe, and economical operation of current NPPs. The Advanced Outage Control Center project has the goal of improving the management of commercial NPP refueling outages. To accomplish this goal, this INL R&D project is developing an advanced outage control center (OCC) that is specifically designed to maximize the usefulness of communication and collaboration technologies for outage coordination and problem resolution activities. This report describes specific recent efforts to develop a capability called outage Micro-Scheduling. Micro-Scheduling is the ability to allocate and schedule outage support task resources on a sub-hour basis. Micro-Scheduling is the real-time fine-tuning of the outage schedule to react to the actual progress of the primary outage activities to ensure that support task resources are optimally deployed with the least amount of delay and unproductive use of resources. The remaining sections of this report describe in more detail the scheduling challenges that occur during outages, how a Micro-Scheduling capability helps address those challenges, and provides a status update on work accomplished to date and the path forward.

  9. Policy on University Closure or Class/Examination Cancellation Adverse conditions such as winter storms or power outages will, from time to time, require the

    E-Print Network [OSTI]

    Lotze, Heike K.

    such as winter storms or power outages will, from time to time, require the University to reduce or restrict its of individual units' operations. For example, a power outage may not affect all campuses

  10. Nuclear Safety Risk Management in Refueling Outage of Qinshan Nuclear Power Plant

    SciTech Connect (OSTI)

    Meijing Wu; Guozhang Shen [Qinshan Nuclear power company (China)

    2006-07-01

    The NPP is used to planning maintenance, in-service inspection, surveillance test, fuel handling and design modification in the refueling outage; the operator response capability will be reduced plus some of the plant systems out of service or loss of power at this time. Based on 8 times refueling outage experiences of the Qinshan NPP, this article provide some good practice and lesson learned for the nuclear safety risk management focus at four safety function areas of Residual Heat Removal Capability, Inventory Control, Power availability and Reactivity control. (authors)

  11. Seasonal Run Distribution Seasonal Run Distribution

    E-Print Network [OSTI]

    . The term "total run" defines the number of adult sockeye salmon that home to the Karluk River before197 Seasonal Run Distribution CHAPTER 6 Seasonal Run Distribution They arrived from the sea in one, what was the seasonal run distribution of its sockeye salmon? Was the original run distribution which

  12. Directions for accessing Blackboard 9 Sandbox Test Sites: Please Note: These sites are hosted on a development server, which is prone to outages, updates, etc.

    E-Print Network [OSTI]

    Gray, Jeffrey J.

    on a development server, which is prone to outages, updates, etc. There may be times when the sites are unavailable

  13. 2304 IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 55, NO. 5, MAY 2009 Service-Outage-Based Power and Rate Control for

    E-Print Network [OSTI]

    Franceschetti, Massimo

    2304 IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 55, NO. 5, MAY 2009 Service-Outage-Based Power is considered. For a fixed basic rate r0, a service outage occurs when the instantaneous transmission rate falls to peak and average trans- mitter power constraints and a constraint on the service outage probability

  14. Copyright 2008 IEEE. Reprinted from Hui Ren, Student Member, IEEE and Ian Dobson, Fellow, IEEE; Using Transmission Line Outage Data to Estimate Cascading Failure Propagation in an

    E-Print Network [OSTI]

    ; Using Transmission Line Outage Data to Estimate Cascading Failure Propagation in an Electric Power ON CIRCUITS AND SYSTEMS--II: EXPRESS BRIEFS, VOL. 55, NO. 9, SEPTEMBER 2008 927 Using Transmission Line Outage, IEEE, and Ian Dobson, Fellow, IEEE Abstract--We study cascading transmission line outages recorded over

  15. An Efficient Energy Curtailment Scheme For Outage Management in Smart Grid

    E-Print Network [OSTI]

    Durrani, Salman

    An Efficient Energy Curtailment Scheme For Outage Management in Smart Grid Wayes Tushar§, Jian--In this paper an efficient energy curtailment scheme is studied, which enables the power users of a smart grid. Considering the advantages of a two-way communications infrastructure for any future smart grid, a non

  16. 96 IEEE power & energy magazine march/april 2005 THE MASSIVE POWER OUTAGE OF

    E-Print Network [OSTI]

    Amin, S. Massoud

    96 IEEE power & energy magazine march/april 2005 T THE MASSIVE POWER OUTAGE OF August 2003- gic--of the energy and infrastructure security challenges facing our nation. Those authors-level backups, to focus main- ly on coping is unwisely defeatist. As an energy professional and an electrical

  17. On PMU Location Selection for Line Outage Detection in Wide-area Transmission Networks

    E-Print Network [OSTI]

    Zhao, Yue

    1 On PMU Location Selection for Line Outage Detection in Wide-area Transmission Networks Yue Zhao, Member, IEEE, Andrea Goldsmith, Fellow, IEEE, and H. Vincent Poor, Fellow, IEEE Abstract--The optimal PMU algorithm is proposed to find the globally optimal PMU locations. Using this algorithm, the optimal trade

  18. Application of Hybrid Geo-Spatially Granular Fragility Curves to Improve Power Outage Predictions

    SciTech Connect (OSTI)

    Fernandez, Steven J; Allen, Melissa R; Omitaomu, Olufemi A; Walker, Kimberly A

    2014-01-01

    Fragility curves depict the relationship between a weather variable (wind speed, gust speed, ice accumulation, precipitation rate) and the observed outages for a targeted infrastructure network. This paper describes an empirical study of the county by county distribution of power outages and one minute weather variables during Hurricane Irene with the objective of comparing 1) as built fragility curves (statistical approach) to engineering as designed (bottom up) fragility curves for skill in forecasting outages during future hurricanes; 2) county specific fragility curves to find examples of significant deviation from average behavior; and 3) the engineering practices of outlier counties to suggest future engineering studies of robustness. Outages in more than 90% of the impacted counties could be anticipated through an average or generic fragility curve. The remaining counties could be identified and handled as exceptions through geographic data sets. The counties with increased or decreased robustness were characterized by terrain more or less susceptible to persistent flooding in areas where above ground poles located their foundations. Land use characteristics of the area served by the power distribution system can suggest trends in the as built power grid vulnerabilities to extreme weather events that would be subjects for site specific studies.

  19. Reuter Power Outage Communications: Needs, Infrastructures, Concepts Proceedings of the 10th

    E-Print Network [OSTI]

    COMMUNICATION INFRASTRUCTURES AND THEIR AVAILABILITY DURING POWER OUTAGES The 2012 blackout in India (670 million affected), the 2009 blackout in Brazil and Paraguay (87 million), the 2006 European blackout (10 million) and the 2003 Northeast blackout in the United States and Canada (55 million) show that big power

  20. Prediction-Based Recovery from Link Outages in On-Board Mobile Communication Networks

    E-Print Network [OSTI]

    Libman, Lavy

    , such as those pro- posed for (and employed in) public transport vehicles, users are connected to a local network transport routes, and their repetitive nature, allows a certain degree of prediction of impending link extension known as Freeze-TCP, we study how the performance of the protocol depends on the outage prediction

  1. Final Remediation Report for the K-Area Bingham Pump Outage Pit (643-1G)

    SciTech Connect (OSTI)

    Morganstern, M.

    2002-06-18

    The K-Area Bingham Pump Outage Pit (K BPOP) Building Number 643-1G, is situated immediately south and outside the K-Reactor fence line and is approximately 400 feet in length and 60 feet in width. For the K BPOP operable unit, the Land Use Control (LUC) objectives are to prevent contact, removal, or excavation of buried waste in the area and to preclude residential use of the area.

  2. MATCASC: A tool to analyse cascading line outages in power grids

    E-Print Network [OSTI]

    Koç, Yakup; Araujo, Nuno A M; Warnier, Martijn

    2013-01-01

    Blackouts in power grids typically result from cascading failures. The key importance of the electric power grid to society encourages further research into sustaining power system reliability and developing new methods to manage the risks of cascading blackouts. Adequate software tools are required to better analyze, understand, and assess the consequences of the cascading failures. This paper presents MATCASC, an open source MATLAB based tool to analyse cascading failures in power grids. Cascading effects due to line overload outages are considered. The applicability of the MATCASC tool is demonstrated by assessing the robustness of IEEE test systems and real-world power grids with respect to cascading failures.

  3. Analytical Tools to Predict Distribution Outage Restoration Load. Final Project Report.

    SciTech Connect (OSTI)

    Law, John

    1994-11-14

    The main activity of this project has been twofold: (1) development of a computer model to predict CLPU(Cold Load Pickup) and (2) development of a field measurement and analysis method to obtain the input parameters of the CLPU model. The field measurement and analysis method is called the Step-Voltage-Test (STEPV). The Kootenai Electric Cooperative Appleway 51 feeder in Coeur d`Alene was selected for analysis in this project and STEPV tests were performed in winters of 92 and 93. The STEPV data was analyzed (method and results presented within this report) to obtain the Appleway 51 feeder parameters for prediction by the CLPU model. One only CLPU record was obtained in winter 1994. Unfortunately, the actual CLPU was not dramatic (short outage and moderate temperature) and did not display cyclic restoration current. A predicted Appleway 51 feeder CLPU was generated using the parameters obtained via the STEPV measurement/analysis/algorithm method at the same ambient temperature and outage duration as the measured actual CLPU. The predicted CLPU corresponds reasonably well with the single actual CLPU data obtained in winter 1994 on the Appleway 51 feeder.

  4. Outage Log

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesseworkSURVEYI/O Streams forOrhan Kizilkaya, Ph.D.Our Team Our Team OurOurOut

  5. The Third Season of Rape

    E-Print Network [OSTI]

    Ahmed, Ali Jimale

    1988-01-01

    UFAHAMU THE THIRD SEASON OF RAPE by Ali Jimale Ahmed Andin the third season of rape. ·Somali for blood-sucking

  6. The Second Season of Rape

    E-Print Network [OSTI]

    Keynan, Hassan A.

    1988-01-01

    POETRY THE SECOND SEASON OF RAPE by Hassan A Keynan I datedFor the second season of Rape. Then, in her womb, did I

  7. Normal, Not Paracompact Spaces

    E-Print Network [OSTI]

    Fleissner, William G.

    1982-07-01

    We describe some recently constructed counterexamples in general topology, including a normal, nonmetrizable Moore space, a normal para-Lindelof, not paracompact space, and a normal, screenable, not paracompact space....

  8. Policy on Building use during Ventilation Outage: School of Science Roger Bacon Hall and Morrell Science Center

    E-Print Network [OSTI]

    Policy on Building use during Ventilation Outage: School of Science Roger Bacon Hall and Morrell not only laboratories, but also the entire building, including non-laboratory space. When Roger Bacon Hall environment. When a laboratory in Roger Bacon Hall or Morrell Science Center has no ventilation or reduced

  9. Understanding the Benefits of Dispersed Grid-Connected Photovoltaics: From Avoiding the Next Major Outage to Taming Wholesale Power Markets

    SciTech Connect (OSTI)

    Letendre, Steven E.; Perez, Richard

    2006-07-15

    Thanks to new solar resource assessment techniques using cloud cover data available from geostationary satellites, it is apparent that grid-connected PV installations can serve to enhance electric grid reliability, preventing or hastening recovery from major power outages and serving to mitigate extreme price spikes in wholesale energy markets. (author)

  10. Probabilistic analysis of allowed outage times relaxation at a PWR plant

    SciTech Connect (OSTI)

    Cho, N.; Chu, T.; Xue, D.; Bozoki, G.; Youngblood, R.

    1986-01-01

    Technical Specifications (TS) in a nuclear power plant are specific requirements on its day-to-day operation, designed to protect public health and safety. Two primary aspects of the TS are (1) limiting conditions of operation (LCO) with allowed outage times (AOTs) and (2) surveillance testing intervals (STIs). In recent years, there has been growing interest in the nuclear community in reexamining the TS. One of the reasons is that a significant portion of reactor downtime (plant unavailability) is attributable to the strict TS. Existing TS were derived from engineering judgement based on deterministic review; they were not directly risk-based, and their efficacy in enhancing public safety is difficult to establish. This paper presents a summary of a critical review of the Westinghouse report which proposed that AOTs for a number of safety systems at the Byron Generating Station be increased from 3 to 7 days.

  11. Reducing Duration of Refueling Outage by Optimizing Core Design and Shuffling Sequence

    SciTech Connect (OSTI)

    Wakker, P.H.; Verhagen, F.C.M.; Bloois, J.T. van; Sutton, W.R. III

    2005-07-15

    Reducing the duration of refueling outage is possible by optimizing the core design and the shuffling sequence. For both options software tools have been developed that have been applied to the three most recent cycles of the Borssele plant in the Netherlands. Applicability of the shuffling sequence optimization to boiling water reactors has been demonstrated by a comparison to a recent shuffle plan used in the Hatch plant located in the United States. Their uses have shown that both core design and shuffling sequence optimization can be exploited to reduce the time needed for reloading a core with an in-core shuffling scheme. Ex-core shuffling schemes for pressurized water reactors can still have substantial benefit from a core design using a minimized number of insert shuffles.

  12. Seasonality in air transportation demand

    E-Print Network [OSTI]

    Reichard Megwinoff, H?tor Nicolas

    1988-01-01

    This thesis investigates the seasonality of demand in air transportation. It presents three methods for computing seasonal indices. One of these methods, the Periodic Average Method, is selected as the most appropriate for ...

  13. Plant Outage Time Savings Provided by Subcritical Physics Testing at Vogtle Unit 2

    SciTech Connect (OSTI)

    Cupp, Philip [Southern Nuclear Company (United States); Heibel, M.D. [Westinghouse Electric Company, LLC (United States)

    2006-07-01

    The most recent core reload design verification physics testing done at Southern Nuclear Company's (SNC) Vogtle Unit 2, performed prior to initial power operations in operating cycle 12, was successfully completed while the reactor was at least 1% {delta}K/K subcritical. The testing program used was the first application of the Subcritical Physics Testing (SPT) program developed by the Westinghouse Electric Company LLC. The SPT program centers on the application of the Westinghouse Subcritical Rod Worth Measurement (SRWM) methodology that was developed in cooperation with the Vogtle Reactor Engineering staff. The SRWM methodology received U. S. Nuclear Regulatory Commission (NRC) approval in August of 2005. The first application of the SPT program occurred at Vogtle Unit 2 in October of 2005. The results of the core design verification measurements obtained during the SPT program demonstrated excellent agreement with prediction, demonstrating that the predicted core characteristics were in excellent agreement with the actual operating characteristics of the core. This paper presents an overview of the SPT Program used at Vogtle Unit 2 during operating cycle 12, and a discussion of the critical path outage time savings the SPT program is capable of providing. (authors)

  14. Risk-based evaluation of Allowed Outage Times (AOTs) considering risk of shutdown

    SciTech Connect (OSTI)

    Mankamo, T.; Kim, I.S.; Samanta, P.K.

    1992-12-31

    When safety systems fail during power operation, Technical Specifications (TS) usually limit the repair within Allowed Outage Time (AOT). If the repair cannot be completed within the AOT, or no AOT is allowed, the plant is required to be shut down for the repair. However, if the capability to remove decay heat is degraded, shutting down the plant with the need to operate the affected decay-heat removal systems may impose a substantial risk compared to continued power operation over a usual repair time. Thus, defining a proper AOT in such situations can be considered as a risk-comparison between the repair in frill power state with a temporarily increased level of risk, and the altemative of shutting down the plant for the repair in zero power state with a specific associated risk. The methodology of the risk-comparison approach, with a due consideration of the shutdown risk, has been further developed and applied to the AOT considerations of residual heat removal and standby service water systems of a boiling water reactor (BWR) plant. Based on the completed work, several improvements to the TS requirements for the systems studied can be suggested.

  15. Risk-based evaluation of Allowed Outage Times (AOTs) considering risk of shutdown

    SciTech Connect (OSTI)

    Mankamo, T. ); Kim, I.S.; Samanta, P.K. )

    1992-01-01

    When safety systems fail during power operation, Technical Specifications (TS) usually limit the repair within Allowed Outage Time (AOT). If the repair cannot be completed within the AOT, or no AOT is allowed, the plant is required to be shut down for the repair. However, if the capability to remove decay heat is degraded, shutting down the plant with the need to operate the affected decay-heat removal systems may impose a substantial risk compared to continued power operation over a usual repair time. Thus, defining a proper AOT in such situations can be considered as a risk-comparison between the repair in frill power state with a temporarily increased level of risk, and the altemative of shutting down the plant for the repair in zero power state with a specific associated risk. The methodology of the risk-comparison approach, with a due consideration of the shutdown risk, has been further developed and applied to the AOT considerations of residual heat removal and standby service water systems of a boiling water reactor (BWR) plant. Based on the completed work, several improvements to the TS requirements for the systems studied can be suggested.

  16. Interior Structure and Seasonal Mass Redistribution of Mars from Radio

    E-Print Network [OSTI]

    Manga, Michael

    Interior Structure and Seasonal Mass Redistribution of Mars from Radio Tracking of Mars Pathfinder. Analysis of radio tracking measurements from the Vi- king landers has determined the normal- ized polar. The precession is driven by the gravita- tional torque of the sun acting on Mars' oblate figure

  17. FINAL REPORT A HIGH SEASONAL

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    #12;'I MTI 79TR68 FINAL REPORT A HIGH SEASONAL PERFORMANCE FACTOR GAS HEAT PUMP FOR THE NORTH Model Gas Heat Pump ......... 11-4 11.4 CNG Typical Weather Year Selection Method. . . . 11-5 11 of the subject gas-fueled heat pump under development in comparison with other equipment which

  18. Normal Conducting CLIC Technology

    E-Print Network [OSTI]

    Jensen, E

    2006-01-01

    The CLIC (Compact Linear Collider) multi-lateral study group based at CERN is studying the technology for an electron-positron linear collider with a centre-of-mass energy up to 5 TeV. In contrast to the International Linear Collider (ILC) study which has chosen to use super-conducting cavities with accelerating gradients in the range of 30-40 MV/m to obtain centre-of-mass collision energies of 0.5-1 TeV, the CLIC study aims to use a normal-conducting system based on two-beam technology with gradients of 150 MV/m. It is generally accepted that this change in technology is not only necessary but the only viable choice for a cost-effective multi-TeV collider. The CLIC study group is studying the technology issues of such a machine, and is in particular developing state-of-the-art 30 GHz molybdenum-iris accelerating structures and power extraction and transfer structures (PETS). The accelerating structure has a new geometry which includes fully-profiled RF surfaces optimised to minimize surface fields, and hybri...

  19. Normal Conducting CLIC Technology

    SciTech Connect (OSTI)

    Jensen, Erk

    2006-01-03

    The CLIC (Compact Linear Collider) multi-lateral study group based at CERN is studying the technology for an electron-positron linear collider with a centre-of-mass energy up to 5 TeV. In contrast to the International Linear Collider (ILC) study which has chosen to use super-conducting cavities with accelerating gradients in the range of 30-40 MV/m to obtain centre-of-mass collision energies of 0.5-1 TeV, the CLIC study aims to use a normal-conducting system based on two-beam technology with gradients of 150 MV/m. It is generally accepted that this change in technology is not only necessary but the only viable choice for a cost-effective multi-TeV collider. The CLIC study group is studying the technology issues of such a machine, and is in particular developing state-of-the-art 30 GHz molybdenum-iris accelerating structures and power extraction and transfer structures (PETS). The accelerating structure has a new geometry which includes fully-profiled RF surfaces optimised to minimize surface fields, and hybrid damping using both iris slots and radial waveguides. A newly-developed structure-optimisation procedure has been used to simultaneously balance surface fields, power flow, short and long-range transverse wakefields, RF-to-beam efficiency and the ratio of luminosity to input power. The slotted irises allow a simple structure fabrication by high-precision high-speed 3D milling of just four pieces, and an even easier bolted assembly in a vacuum chamber.

  20. FORECAST OF ATLANTIC SEASONAL HURRICANE ACTIVITY AND LANDFALL STRIKE PROBABILITY FOR 2014

    E-Print Network [OSTI]

    Connors, Daniel A.

    1 FORECAST OF ATLANTIC SEASONAL HURRICANE ACTIVITY AND LANDFALL STRIKE PROBABILITY FOR 2014 We are higher than normal, and vertical wind shear throughout the Atlantic basin has been much stronger than-period average values. (as of 31 July 2014) By Philip J. Klotzbach1 and William M. Gray2 This forecast as well

  1. Strategies for Aligning Program Demand with Contractor's Seasonal...

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

    Aligning Program Demand with Contractor's Seasonal Fluctuations Strategies for Aligning Program Demand with Contractor's Seasonal Fluctuations Better Buildings Neighborhood Program...

  2. Seasonal Tips | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo.Hydrogen4 » Search results SearchMiddle SchoolDownloadSeasonal Tips

  3. Refinery Outages: Fall 2014

    Gasoline and Diesel Fuel Update (EIA)

    gasoline supply in a particular region because pipeline infrastructure, geography and marine shipping regulations constrain the amount of product that can flow among the different...

  4. Systems Outage Notification Policy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired Solar Fuel Production 1:PhysicsSyndicated Content

  5. Refinery Outages: Fall 2014

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)Decade Year-0 Year-1 Year-2Feet)Thousand Cubic Feet)698 1.8732009Fall

  6. NERSC Scheduled System Outages

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you notHeatMaRIEdioxide capture CS Seminars Calendar Home »

  7. Seasonal persistence of midlatitude total ozone anomalies

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    Seasonal persistence of midlatitude total ozone anomalies Article Published Version Fioletov, V. E. and Shepherd, T. G. (2003) Seasonal persistence of midlatitude total ozone anomalies. Geophysical Research persistence of midlatitude total ozone anomalies Vitali E. Fioletov Meteorological Service of Canada, Toronto

  8. Normalized cDNA libraries

    DOE Patents [OSTI]

    Soares, M.B.; Efstratiadis, A.

    1997-06-10

    This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form comprising: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3{prime} noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to moderate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library. 4 figs.

  9. Normalized cDNA libraries

    DOE Patents [OSTI]

    Soares, Marcelo B. (New York, NY); Efstratiadis, Argiris (Englewood, NJ)

    1997-01-01

    This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form comprising: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3' noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to moderate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library.

  10. Seasonally Flooded Grasslands -Grand CaymanSeasonally Flooded Grasslands -Grand Cayman 0 1 2 3 4 50.5

    E-Print Network [OSTI]

    Exeter, University of

    Seasonally Flooded Grasslands - Grand CaymanSeasonally Flooded Grasslands - Grand Cayman 0 1 2 3 4 Protected Areas Seasonally Flooded Grasslands V.A.1.N.g. #12;Seasonally Flooded Grasslands - Little CaymanSeasonally Flooded Grasslands - Little Cayman 0 0.5 1 1.5 2 2.50.25 Kilometers Cayman Islands National Biodiversity

  11. ContentsContents3399the normal distribution

    E-Print Network [OSTI]

    Vickers, James

    ContentsContents3399the normal distribution 1. The normal distribution 2. The normal approximation to the binomial distribution 3. Sums and differences of random variables Learning outcomes In a previous Workbook of a continuous random variables: the normal distribution. The probabilities of the normal distribution have

  12. Chapter 6 Continuous Distribution: The Normal Distribution

    E-Print Network [OSTI]

    Hong, Don

    Chapter 6 Continuous Distribution: The Normal Distribution 6.1 Introduction 6.2 Properties of a Normal Distribution 6.3 The Standard Normal Distribution 6.4 Applications of Normal Distribution 6.5 The Central Limit Theorem 6.6 The Normal Approximation to the Binomial Distribution Definition. A continuous

  13. cole normale suprieure de Lyon

    E-Print Network [OSTI]

    Vallette, Bruno

    école normale supérieure de Lyon ENS Lyon Electron quantum optics P. Degiovanni (ENS Lyon) C T. Martin(CPT Marseille) T. Jonckheere J. Rech C. Wahl #12;ENS Lyon A message from G. Fève Gwendal. #12;ENS Lyon ENS Lyon Outline · Introduction and motivation · Single electron coherence · Relaxation

  14. Proposed Plan for the R-Area Bingham Pump Outage Pits (643-8G, -9G, -10G) and R-Area Unknown Pits No.1, No.2, No.3 (RUNK-1, -2, -3)

    SciTech Connect (OSTI)

    Mundy, S.

    2002-07-31

    The purpose of this proposed plan is to describe the preferred remedial alternative for the R-Area Bingham Pump Outage Pits (R BPOPs) and the R-Area Unknowns (RUNKs) operable unit (OU) and to provide for public involvement in the decision-making process.

  15. Energy Resources for Tornado Season | Department of Energy

    Office of Environmental Management (EM)

    Tornado Season Energy Resources for Tornado Season The aftermath of a tornado in Greensburg, Kansas. | Photo courtesy of Federal Emergency Mgmt. Agency, NREL 16290 The aftermath of...

  16. Vegetation Dynamics in Seasonally Grazed Upland Systems 

    E-Print Network [OSTI]

    Pollock, Meg L

    This thesis addresses the effects of seasonality of grazing on vegetation dynamics. Background to the thesis is provided by the Hill Sheep and Native Woodland (HSNW) project, a system-scale experiment with the long-term ...

  17. Potential Economic Value of Seasonal Hurricane Forecasts

    E-Print Network [OSTI]

    Emanuel, Kerry Andrew

    This paper explores the potential utility of seasonal Atlantic hurricane forecasts to a hypothetical property insurance firm whose insured properties are broadly distributed along the U.S. Gulf and East Coasts. Using a ...

  18. Table of Contents Our Season Page 3

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    1 #12;2 Table of Contents 2011-2012 Our Season Page 3 People Page 8 Outreach Page 11 Curricular-Curtain 546 $3,631.16 Hell In High Water-Rand 1252 $7,102.47 Solstice-Curtain 506 $2,583.42 Urinetown - Rand-stage season this spring. Hell in High Water by Marcus Gardley The Rand Theater Nov. 10, 11, 12, 16, 17, 18, 19

  19. Power Normal Distribution Debasis Kundu1

    E-Print Network [OSTI]

    Kundu, Debasis

    Power Normal Distribution Debasis Kundu1 and Rameshwar D. Gupta2 Abstract Recently Gupta and Gupta [10] proposed the power normal distribution for which normal distribution is a special case. The power normal distribution is a skewed distri- bution, whose support is the whole real line. Our main aim

  20. NOVA Making Stuff Season 2

    SciTech Connect (OSTI)

    Leombruni, Lisa; Paulsen, Christine Andrews

    2014-12-12

    Over the course of four weeks in fall 2013, 11.7 million Americans tuned in to PBS to follow host David Pogue as he led them in search of engineering and scientific breakthroughs poised to change our world. Levitating trains, quantum computers, robotic bees, and bomb-detecting plants—these were just a few of the cutting-edge innovations brought into the living rooms of families across the country in NOVA’s four-part series, Making Stuff: Faster, Wilder, Colder, and Safer. Each of the four one-hour programs gave viewers a behind-the-scenes look at novel technologies poised to change our world—showing them how basic research and scientific discovery can hold the keys to transforming how we live. Making Stuff Season 2 (MS2) combined true entertainment with educational value, creating a popular and engaging series that brought accessible science into the homes of millions. NOVA’s goal to engage the public with such technological innovation and basic research extended beyond the broadcast series, including a variety of online, educational, and promotional activities: original online science reporting, web-only short-form videos, a new online quiz-game, social media engagement and promotion, an educational outreach “toolkit” for science educators to create their own “makerspaces,” an online community of practice, a series of nationwide Innovation Cafés, educator professional development, a suite of teacher resources, an “Idealab,” participation in national conferences, and specialized station relation and marketing. A summative evaluation of the MS2 project indicates that overall, these activities helped make a significant impact on the viewers, users, and participants that NOVA reached. The final evaluation conducted by Concord Evaluation Group (CEG) confidently concluded that the broadcast, website, and outreach activities were successful at achieving the project’s intended impacts. CEG reported that the MS2 series and website content were successful in raising awareness and sparking interest in innovation, and increased public awareness that basic research leads to technological innovation; this interest was also sustained over a six month period. Efforts to create an online community of practice were also successful: the quality of collaboration increased, and community members felt supported while using Maker pedagogy. These findings provide clear evidence that large-scale science media projects like MS2 are an effective means of “moving the needle” on attitudes about and excitement for science. NOVA’s broadcast audience and ratings have always indicated that a large portion of the population is interested in and engages with educational science media on a weekly basis. Yet these evaluation results provide the empirical evidence that beyond being capable of attracting, maintaining, and growing a dedicated group of citizens interested in science, these shows—with their diverse content provided on a variety of media channels—are capable of sparking new interest in science, raising public awareness of the importance of science, and maintaining and growing that interest over time. In a country where approximately a quarter of the population doesn’t know the earth rotates around the sun,1 roughly half still don’t accept evolution,2 and about 20% don’t think climate change is happening,3 the importance of these findings cannot be overstated. The success of MS2 suggests that large-scale media projects dedicated to and linked by coverage of scientific “big ideas” are an effective means of shifting public opinion on—and improving understanding of—science. REFERENCES 1, 2 National Science Foundation, Science and Engineering Indicators (2014). Chapter 7: Science and Technology: Public Attitudes and Understanding. 3 Leiserowitz, A., Maibach, E., Roser-Renouf, C., Feinberg, G., & Rosenthal, S. (2014) Climate change in the American mind: April, 2014. Yale University and George Mason University. New Haven, CT: Yale Project on Climate Change Communication.

  1. Cascaded target normal sheath acceleration

    SciTech Connect (OSTI)

    Wang, W. P.; Shen, B. F.; Zhang, X. M.; Wang, X. F.; Xu, J. C.; Zhao, X. Y.; Yu, Y. H.; Yi, L. Q.; Shi, Y.; Zhang, L. G.; Xu, T. J.; Xu, Z. Z.

    2013-11-15

    A cascaded target normal sheath acceleration (TNSA) scheme is proposed to simultaneously increase energy and improve energy spread of a laser-produced mono-energetic proton beam. An optimum condition that uses the maximum sheath field to accelerate the center of the proton beam is theoretically found and verified by two-dimensional particle-in-cell simulations. An initial 10 MeV proton beam is accelerated to 21 MeV with energy spread decreased from 5% to 2% under the optimum condition during the process of the cascaded TNSA. The scheme opens a way to scale proton energy lineally with laser energy.

  2. Turing's normal numbers: towards randomness Veronica Becher

    E-Print Network [OSTI]

    presumably in 1938 Alan Turing gave an algorithm that produces real numbers normal to every integer base- putable normal numbers, and this result should be attributed to Alan Turing. His manuscript entitled "A

  3. Seasonal ozone variations in the upper mesosphere

    SciTech Connect (OSTI)

    Thomas, R.J. (Univ. of Colorado, Boulder (United States))

    1990-05-20

    The global daytime ozone was measured by the Solar Mesosphere Explorer satellite (SME) for 5 years. The measurements extend through the mesosphere, covering from 50 km to over 90 km. The ozone in the upper mesosphere varies annually by up to a factor of 3. The observed seasonal variations may be summarized in several different ways. From year to year there is a great deal of repeatability of these variations. This repeatability occurs in most of the upper mesosphere outside the tropics. Near 0.01 mbar (80 km) the mid- and high-latitude mixing ratio peaks each year in mid-April. A secondary maximum in the altitude profile of ozone density usually occurs near 85 km. Changes in this structure are directly related to the April maximum and other seasonal changes seen at 0.01 mbar. The changing seasonal structure produces a bump at the ozone mixing ratio minimum that is largest just after spring equinox. This perturbation to the mixing ratio profile seems to move upward during the first half of the year. The seasonal changes of ozone were analyzed in terms of annual and semiannual structure. The variations generally have both an annual and semiannual component depending on altitude and latitude. The phases of the variations change quickly with both altitude and latitude. The semiannual component peaks in April, over most of the upper mesosphere.

  4. 2005 Season Review Small Fruit and Grapes

    E-Print Network [OSTI]

    Ginzel, Matthew

    1 INDEX 2005 Season Review Small Fruit and Grapes Tree Fruit Plant Pathology Entomology Indiana Horticultural Congress Horticultural Therapy FFF05-09 December, 2005 Small Fruit and Grapes: Blueberries Large, especially on flowers of Arkan- sas Primocane Fruiters. ·Potato leafhoppers, very severe damage this year

  5. Mammalian Seasonal Rhythms: Behavior and Neuroendocrine Substrates

    E-Print Network [OSTI]

    Zucker, Irving

    . The amount and intensity of solar radiation varies with latitude; the greater the distance from the equator, the more pronounced the interseasonal differences in ambient temperature and solar radiation. Plant growth to melatonin in mammals to date." (Arendt, 2000) I. INTRODUCTION Seasonal phenotypes in behavior and physiology

  6. Minor League Fan Satisfaction with the Season Ticket Selling Process 

    E-Print Network [OSTI]

    Reese, Jason D.

    2011-08-08

    The purpose of this study was to assess satisfaction with the season ticket selling process administered by a minor league baseball franchise. Minor league sport organizations rely heavily on season ticket sales and retention, therefore, knowing...

  7. Energy Risk Predictions for the 2015 Hurricane Season | Department...

    Office of Environmental Management (EM)

    Risk Predictions for the 2015 Hurricane Season Energy Risk Predictions for the 2015 Hurricane Season This presentation is from a DOE-NASEO webinar held June 23, 2015, on...

  8. St. Augustinegrass Warm-season turfgrass. Prefers full sun, but

    E-Print Network [OSTI]

    Ishida, Yuko

    St. Augustinegrass Warm-season turfgrass. Prefers full sun, but has a high tolerance for shade-season grass. It does best in full sun and high temperatures. Goes dormant and turns brown in winter. Very

  9. The Dhiban Excavation and Development Project's 2005 Season

    E-Print Network [OSTI]

    2010-01-01

    The Dh?bån Excavation and Development Project’s 2005 SeasonThe Dh?bån Excavation and Development Project’s 2005 SeasonDh?bån Excavation and Development Project (DEDP hereafter)

  10. Seasonal climatology of winddriven circulation on the New Jersey Shelf

    E-Print Network [OSTI]

    season and more to the right of the wind during the stratified season. During the stratified summer et al., 2008], river dis- charge [Fong and Geyer, 2001; ByoungJu and Wilkin, 2007; Chant et al., 2008

  11. Seasonal sand level changes on southern california beaches

    E-Print Network [OSTI]

    Yates, Marissa L.

    2009-01-01

    Guza, R. Gutierrez, and R. Seymour, 2008: A Technique forW.C. O’ Reilly, and R.J. Seymour, 2009: Overview of SeasonalW.C. O’Reilly, and R.J. Seymour, 2009: Seasonal Persis-

  12. Seasonal Sand Level Changes on Southern California Beaches

    E-Print Network [OSTI]

    Yates, Marissa L

    2009-01-01

    Guza, R. Gutierrez, and R. Seymour, 2008: A Technique forW.C. O’ Reilly, and R.J. Seymour, 2009: Overview of SeasonalW.C. O’Reilly, and R.J. Seymour, 2009: Seasonal Persis-

  13. Emergency Diesel Generation System Surveillance Test Policy Optimization Through Genetic Algorithms Using Non-Periodic Intervention Frequencies and Seasonal Constraints

    SciTech Connect (OSTI)

    Lapa, Celso M.F.; Pereira, Claudio M.N.A. [CNEN, Comissao Nacional de Energia Nuclear, Rua General Severiano 90, Rio de Janeiro, RJ-22-294-900 (Brazil); Frutuoso e Melo, P.F. [COPPE/UFRJ, Cidade Universitaria, Centro de Tecnologia, Bloco G, sala 101, Ilha do Fundao, 21945-970, Rio de Janeiro - RJ (Brazil)

    2002-07-01

    Nuclear standby safety systems must frequently, be submitted to periodic surveillance tests. The main reason is to detect, as soon as possible, the occurrence of unrevealed failure states. Such interventions may, however, affect the overall system availability due to component outages. Besides, as the components are demanded, deterioration by aging may occur, penalizing again the system performance. By these reasons, planning a good surveillance test policy implies in a trade-off between gains and overheads due to the surveillance test interventions. In order maximize the systems average availability during a given period of time, it has recently been developed a non-periodic surveillance test optimization methodology based on genetic algorithms (GA). The fact of allowing non-periodic tests turns the solution space much more flexible and schedules can be better adjusted, providing gains in the overall system average availability, when compared to those obtained by an optimized periodic tests scheme. The optimization problem becomes, however, more complex. Hence, the use of a powerful optimization technique, such as GAs, is required. Some particular features of certain systems can turn it advisable to introduce other specific constraints in the optimization problem. The Emergency Diesel Generation System (EDGS) of a Nuclear Power Plant (N-PP) is a good example for demonstrating the introduction of seasonal constraints in the optimization problem. This system is responsible for power supply during an external blackout. Therefore, it is desirable during periods of high blackout probability to maintain the system availability as high as possible. Previous applications have demonstrated the robustness and effectiveness of the methodology. However, no seasonal constraints have ever been imposed. This work aims at investigating the application of such methodology in the Angra-II Brazilian NPP EDGS surveillance test policy optimization, considering the blackout probability growth during summer, due to the electrical power demand increase. Here, the model used penalizes test interventions by a continuous modulating function, which depends on the instantaneous blackout probability. Results have demonstrated the ability of the method in adapting the surveillance tests policy to seasonal behaviors. The knowledge acquired by the GA during the searching process has lead to test schedules that drastically minimize the test interventions at periods of high blackout probability. It is compensated by more frequent tests redistributed through the periods of low blackout probability, in order to provide improvement on the overall average availability at the system level. (authors)

  14. Warm-Season (C4) Grasses Lowell E. Moser

    E-Print Network [OSTI]

    -season perennial grasses as biomass feedstock candidates (Table II-I). Most of this research has focused

  15. Reduce Waste and Save Energy this Holiday Season

    Office of Energy Efficiency and Renewable Energy (EERE)

    Reduce waste and save energy this holiday season whether you're shopping, eating, partying, decorating, or wrapping.

  16. AT 351 Lab 3: Seasons and Surface Temperature (Ch. 3)

    E-Print Network [OSTI]

    Rutledge, Steven

    an important role in an area's local vertical temperature distribution. Below, Figure 1 shows the verticalAT 351 Lab 3: Seasons and Surface Temperature (Ch. 3) Question #1: Seasons (20 pts) A. In your own words, describe the cause of the seasons. B. In the Northern Hemisphere we are closer to the sun during

  17. Improving climate change detection through optimal seasonal averaging: the

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    Improving climate change detection through optimal seasonal averaging: the case of the North. (2015) Improving climate change detection through optimal seasonal averaging: the case of the North;Improving climate change detection through optimal seasonal averaging:1 the case of the North Atlantic jet

  18. Large seasonal swings in leaf area of Amazon rainforests

    E-Print Network [OSTI]

    Myneni, Ranga B.

    tropical forests stud- ied to date display seasonal variations in the presence of new leaves, flowers of 25% in a majority of the Amazon rainforests. This seasonal cycle is timed to the seasonality of solar radiation in a manner that is suggestive of anticipatory and opportunistic pat- terns of net leaf flushing

  19. Part 1. Energy and Mass Solar Radiation and the Seasons

    E-Print Network [OSTI]

    Tang, Youmin

    Part 1. Energy and Mass Chapter 2. Solar Radiation and the Seasons #12;Introduction Solar Radiation radiation = 10 m peak #12;#12;The Solar Constant Energy intensity decreases in proportion to the distance of the Earth's Seasons Orbital alignment to the Sun = seasonal variations in solar energy Revolution

  20. Appearance Normalization of Histology Slides Jared Vicorya

    E-Print Network [OSTI]

    and intensity normalization of digitized histology slides stained with two different agents. In comparison to adjustment of faded slides are given, and the effectiveness of the method in aiding statistical classification is shown. Keywords: appearance normalization, histology 1. Introduction Stains are often used

  1. Normalizing the causality between time series

    E-Print Network [OSTI]

    Liang, X San

    2015-01-01

    Recently, a rigorous yet concise formula has been derived to evaluate the information flow, and hence the causality in a quantitative sense, between time series. To assess the importance of a resulting causality, it needs to be normalized. The normalization is achieved through distinguishing three types of fundamental mechanisms that govern the marginal entropy change of the flow recipient. A normalized or relative flow measures its importance relative to other mechanisms. In analyzing realistic series, both absolute and relative information flows need to be taken into account, since the normalizers for a pair of reverse flows belong to two different entropy balances; it is quite normal that two identical flows may differ a lot in relative importance in their respective balances. We have reproduced these results with several autoregressive models. We have also shown applications to a climate change problem and a financial analysis problem. For the former, reconfirmed is the role of the Indian Ocean Dipole as ...

  2. SEASONAL THERMAL ENERGY STORAGE IN AQUIFERS-MATHEMATICAL MODELING STUDIES IN 1979

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2013-01-01

    LBL~l0208 SEASONAL THERMAL ENERGY STORAGE IN AQUIFERS~began working on seasonal thermal energy storage in aquifers

  3. Advanced Pipe Replacement Procedure for a Defective CRDM Housing Nozzle Enables Continued Normal Operation of a Nuclear Power Plant

    SciTech Connect (OSTI)

    Gilmore, Geoff; Becker, Andrew [Climax Portable Machine Tools, Inc., 2712 East Second Street, Newberg, OR 97132 (United States)

    2006-07-01

    During the 2003 outage at the Ringhals Nuclear Plant in Sweden, a leak was found in the vicinity of a Control Rod Drive Mechanism (CRDM) housing nozzle at Unit 1. Based on the ALARA principle for radioactive contamination, a unique repair process was developed. The repair system includes utilization of custom, remotely controlled GTAW-robots, a CNC cutting and finishing machine, snake-arm robots and NDE equipment. The success of the repair solution was based on performing the machining and welding operations from the inside of the SCRAM pipe through the CRDM housing since accessibility from the outside was extremely limited. Before the actual pipe replacement procedure was performed, comprehensive training programs were conducted. Training was followed by certification of equipment, staff and procedures during qualification tests in a full scale mock-up of the housing nozzle. Due to the ingenuity of the overall repair solution and training programs, the actual pipe replacement procedure was completed in less than half the anticipated time. As a result of the successful pipe replacement, the nuclear power plant was returned to normal operation. (authors)

  4. Pharmacological enhancement of memory or cognition in normal subjects

    E-Print Network [OSTI]

    Lynch, Gary; Cox, Conor D.; Gall, Christine M.

    2014-01-01

    enhancement in normal subjects Demeter, E. , and Sarter,enhancement in normal subjects Katche, C. , Goldin, A. ,enhancement in normal subjects by an ampakine (CX717) in

  5. Seasonal demand and supply analysis of turkeys 

    E-Print Network [OSTI]

    Blomo, Vito James

    1972-01-01

    (percentage) responsiveness of price to changes (usually one percent) in quantity. Assuming a linear demand function, flexibility is shown to be less than one in the upper half of the function, equal to one (unitary) at the midpoint, and greater than one...SEASONAL DEMAND AND SUPPLY ANALYSIS OF TURKEYS A Thesis by VITO JAMES BLOMO Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1972 Ma)or Sub...

  6. Evaluation of potential severe accidents during low power and shutdown operations at Grand Gulf, Unit 1. Volume 5: Analysis of core damage frequency from seismic events for plant operational state 5 during a refueling outage

    SciTech Connect (OSTI)

    Budnitz, R.J. [Future Resources Associates, Inc., Berkeley, CA (United States); Davis, P.R. [PRD Consulting (United States); Ravindra, M.K.; Tong, W.H. [EQE International, Inc., Irvine, CA (United States)

    1994-08-01

    In 1989 the US Nuclear Regulatory Commission (NRC) initiated an extensive program to examine carefully the potential risks during low-power and shutdown operations. The program included two parallel projects, one at Sandia National Laboratories studying a boiling water reactor (Grand Gulf), and the other at Brookhaven National Laboratory studying a pressurized water reactor (Surry Unit 1). Both the Sandia and Brookhaven projects have examined only accidents initiated by internal plant faults---so-called ``internal initiators.`` This project, which has explored the likelihood of seismic-initiated core damage accidents during refueling outage conditions, is complementary to the internal-initiator analyses at Brookhaven and Sandia. This report covers the seismic analysis at Grand Gulf. All of the many systems modeling assumptions, component non-seismic failure rates, and human effort rates that were used in the internal-initiator study at Grand Gulf have been adopted here, so that the results of the study can be as comparable as possible. Both the Sandia study and this study examine only one shutdown plant operating state (POS) at Grand Gulf, namely POS 5 representing cold shutdown during a refueling outage. This analysis has been limited to work analogous to a level-1 seismic PRA, in which estimates have been developed for the core-damage frequency from seismic events during POS 5. The results of the analysis are that the core-damage frequency for earthquake-initiated accidents during refueling outages in POS 5 is found to be quite low in absolute terms, less than 10{sup {minus}7}/year.

  7. The seasons, global temperature, and precession

    SciTech Connect (OSTI)

    Thompson, D.J.

    1995-12-31

    Analysis of instrumental temperature records beginning in 1659 shows that in much of the world the dominant frequency of the seasons is one cycle per anomalistic year (the time from perihelion to perihelion, 265.25964 days), not one cycle per tropical year (the time from equinox to equinox, 265.24220 days), and that the timing of the annual temperature cycle is controlled by perihelion. The assumption that the seasons were timed by the equinoxes has caused many statistical analyses of climate data to be badly biased. Coherence between changes in the amplitude of the annual cycle and those in the average temperature show that between 1854 and 1922 there were small temperature variations, probable of solar origin. Since 1922, the phase of the Northern Hemisphere coherence between these quantities switched from 0{degrees} to 180{degrees} and implies that solar variability cannot be the sole cause of the increasing temperature over the last century. About 1940, the phase patterns of the previous 300 years began to change and now appear to be changing at an unprecendented rate. The average change in phase is not coherent with the logarithm of atmospheric CO{sub 2} concentration.

  8. SEASONAL CHANGES IN TITAN'S SURFACE TEMPERATURES

    SciTech Connect (OSTI)

    Jennings, D. E.; Cottini, V.; Nixon, C. A.; Flasar, F. M.; Kunde, V. G.; Samuelson, R. E.; Romani, P. N.; Hesman, B. E. [Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Carlson, R. C.; Gorius, N. J. P. [Department of Physics, Catholic University of America, Washington, DC 20064 (United States); Coustenis, A. [LESIA, Observatoire de Paris-Meudon, 92195 Meudon Cedex (France); Tokano, T., E-mail: donald.e.jennings@nasa.gov [Institut fuer Geophysik und Meteorologie, Universitaet zu Koeln, Albertus-Magnus-Platz, 50923 Koeln (Germany)

    2011-08-10

    Seasonal changes in Titan's surface brightness temperatures have been observed by Cassini in the thermal infrared. The Composite Infrared Spectrometer measured surface radiances at 19 {mu}m in two time periods: one in late northern winter (LNW; L{sub s} = 335 deg.) and another centered on northern spring equinox (NSE; L{sub s} = 0 deg.). In both periods we constructed pole-to-pole maps of zonally averaged brightness temperatures corrected for effects of the atmosphere. Between LNW and NSE a shift occurred in the temperature distribution, characterized by a warming of {approx}0.5 K in the north and a cooling by about the same amount in the south. At equinox the polar surface temperatures were both near 91 K and the equator was at 93.4 K. We measured a seasonal lag of {Delta}L{sub S} {approx} 9{sup 0} in the meridional surface temperature distribution, consistent with the post-equinox results of Voyager 1 as well as with predictions from general circulation modeling. A slightly elevated temperature is observed at 65{sup 0} S in the relatively cloud-free zone between the mid-latitude and southern cloud regions.

  9. The seasons, global temperature, and precession

    SciTech Connect (OSTI)

    Thomson, D.J. [AT& T Bell Labs, Murray Hill, NJ (United States)

    1995-04-07

    Analysis of instrumental temperature records beginning in 1659 shows that in much of the world the dominant frequency of the seasons is one cycle per anomalistic year (the time from perihelion to perihelion, 365.25964 days), not one cycle per tropical year (the time from equinox to equinox, 365.24220 days), and that the timing of the annual temperature cycle is controlled by perihelion. The assumption that the seasons were timed by the equinoxes has caused many statistical analyses of climate data to be badly biased. Coherence between changes in the amplitude of the annual cycle and those in the average temperature show that between 1854 and 1922 there were small temperature variations, probably of solar origin. Since 1922, the phase of the Northern Hemisphere coherence between these quantities switched from 0{degrees} to 180{degrees} and implies that solar variability cannot be the sole cause of the increasing temperature over the last century. About 1940, the phase patterns of the previous 300 years began to change and now appear to be changing at an unprecedented rate. The average change in phase is now coherent with the logarithm of atmospheric CO{sub 2} concentration. 80 refs., 13 figs.

  10. 100 E. Normal Street Kirksville, MO 63501

    E-Print Network [OSTI]

    Gering, Jon C.

    . Curran Prendergast Repertoire The 2015 Midwest Band Conductors' Symposium" and address to: Dr. Curran Prendergast, 100 East Normal St. Kirksville, MO 63501.truman.edu/mbcs Clinicians: Dr. Paul Popiel, Director of Bands, University of Kansas Dr. Curran

  11. Termination Checking with Types Strong Normalization for

    E-Print Network [OSTI]

    Abel, Andreas

    Termination Checking with Types Strong Normalization a program can be separated into two parts: As the first step, partial correctness is established by verifying that a program matches its specification; then, termination is shown to obtain full correctness

  12. NORMALITY VERSUS COUNTABLE PARACOMPACTNESS IN PERFECT SPACES

    E-Print Network [OSTI]

    Wage, M. L.; Fleissner, William G.; Reed, G. M.

    1976-07-01

    BULLETIN OF THE AMERICAN MATHEMATICAL SOCIETY Volume 82, Number 4, July 1976 NORMALITY VERSUS COUNTABLE PARACOMPACTNESS IN PERFECT SPACES BY M. L. WAGE, W. G. FLEISSNER, AND G. M. REED Communicated March 5, 1976 Introduction. The purpose... of this announcement is to present, in a unified fashion, solutions to long outstanding questions concerning the relationship between countable paracompactness and normality conditions in perfect spaces. Each section of this paper is the contribution of a single...

  13. Seasonal changes in Titan's meteorology E. P. Turtle,1

    E-Print Network [OSTI]

    during the approach to the northern spring equinox in August 2009. Recent observations have shown, Titan's seasons have progressed from southern summer to early southern autumn, and changes

  14. BPA revises policy for managing seasonal power oversupply

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

    policy-for-managing-seasonal-power-oversupply Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects & Initiatives Expand Projects...

  15. Sandia Energy - Understanding Seasonal Effects of WEC Operation...

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

    Understanding Seasonal Effects of WEC Operation using the SNL-SWAN Wave Model Application Home Renewable Energy Energy Water Power News News & Events Systems Analysis Computational...

  16. Refinery Outages: First Half 2015

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)Decade Year-0 Year-1 Year-2Feet)Thousand Cubic Feet)698

  17. outages | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowa (UtilityMichigan)data book Homefuelleasingoutages Home Graham7781's

  18. OpenEI Community - outages

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsourceII JumpQuarterly Smart Grid Data available for download onst,/0Thoughts

  19. Refinery Outages: First Half 2015

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1Markets160Product:7a.CORPORATION /Analysis &

  20. Seasonal mass balance gradients in Norway L. A. Rasmussen1

    E-Print Network [OSTI]

    Rasmussen, L.A.

    16 Aug 05 Seasonal mass balance gradients in Norway L. A. Rasmussen1 and L. M. Andreassen2 1 Norwegian Water Resources and Energy Directorate (NVE) P. O. Box 5091 Majorstua, N-0301 Oslo, Norway in Norway exists in their profiles of both seasonal balances, winter bw(z) and summer bs(z). Unlike many

  1. A global picture of the seasonal persistence of stratospheric ozone

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    A global picture of the seasonal persistence of stratospheric ozone anomalies Article Published persistence of stratospheric ozone anomalies. Journal of Geophysical Research, 115. D18119. ISSN 0148-0227 doi global picture of the seasonal persistence of stratospheric ozone anomalies S. Tegtmeier,1,2 V. E

  2. Environmental Patterns Associated with Active and Inactive Caribbean Hurricane Seasons

    E-Print Network [OSTI]

    Environmental Patterns Associated with Active and Inactive Caribbean Hurricane Seasons MARK R. JURY of hurricanes passing through the Caribbean in the 1950­2005 period reveals that seasons with more intense hurricanes occur with the onset of Pacific La Nin~a events and when Atlantic SSTs west of Africa are above

  3. NOAA 2015 Atlantic Hurricane Season Outlook Dr. Gerry Bell

    E-Print Network [OSTI]

    Chen, Tsuhan

    NOAA 2015 Atlantic Hurricane Season Outlook Dr. Gerry Bell Lead Seasonal Forecaster Climate Prediction Center NOAA/ NWS/ NCEP Collaboration With National Hurricane Center/ NOAA/ NWS/ NCEP Hurricane Research Division/ NOAA/ OAR/ AOML/ HRD www.cpc.ncep.noaa.gov/products/hurricane #12;Outline 1. Features

  4. Handbook of normal frames and coordinates

    E-Print Network [OSTI]

    Bozhidar Z. Iliev

    2006-10-01

    The main subject of the book is an up-to-date and in-depth survey of the theory of normal frames and coordinates in differential geometry. The book can be used as a reference manual, review of the existing results and introduction to some new ideas and developments. In the book can be found practically all existing essential results and methods concerning normal frames and coordinates. Most of the results are represented in full detail with full, in some cases new, proofs. All classical results are expanded and generalized in various directions. Theorems of existence, uniqueness and, possibly, holonomicity of the normal frames and coordinates are proved; mostly, the proofs are constructive and some their parts can be used independently for other tasks. Besides published results, their extensions and generalizations, the book contains completely new results which appear for the first time.

  5. Computing Instantaneous Frequency by normalizing Hilbert Transform

    DOE Patents [OSTI]

    Huang, Norden E.

    2005-05-31

    This invention presents Normalized Amplitude Hilbert Transform (NAHT) and Normalized Hilbert Transform(NHT), both of which are new methods for computing Instantaneous Frequency. This method is designed specifically to circumvent the limitation set by the Bedorsian and Nuttal Theorems, and to provide a sharp local measure of error when the quadrature and the Hilbert Transform do not agree. Motivation for this method is that straightforward application of the Hilbert Transform followed by taking the derivative of the phase-angle as the Instantaneous Frequency (IF) leads to a common mistake made up to this date. In order to make the Hilbert Transform method work, the data has to obey certain restrictions.

  6. AVIAN NEST DENSITIES AND SUCCESS IN INTRODUCED COOL-SEASON GRASS-LEGUME PLANTINGS VERSUS WARM-SEASON NATIVE GRASS

    E-Print Network [OSTI]

    of prairie and idle grassland. Studies indicate that warm-season native grass plantings (WSN) generally provide good winter cover. Recently a trend favoring WSN has emerged, but limited information exists on nesting density and success of cool-season grass-legume plantings (dense nesting cover [DNC]) versus WSN

  7. Normal butane/iso-butane separation

    SciTech Connect (OSTI)

    Volles, W.K.; Cusher, N.A.

    1986-08-26

    This patent describes an improved pressure swing adsorption process for the separation of iso-butane from normal butane in an adsorption system having at least three adsorbent beds, each bed of which undergoes, on a cyclic basis and a processing sequence comprising: introducing a feed gas mixture of iso-butane and normal butane at an upper adsorption pressure to the feed end of the bed capable of selectively adsorbing normal butane as the more selectivity adsorbable component of the gas mixture. The iso-butane as the less readily adsorbable component passes through the bed and is discharged from the discharge end. The feed gas introduction is continued as a normal butane adsorption front is formed in the bed and passes through the bed from the feed end and breaks through at the discharge end of the bed, a portion of the iso-butane effluent stream thus discharged being diverted for passage as purge gas to another bed in the system; and countercurrently depressurizing the bed with release of gas from the feed end.

  8. Termination Checking with Types Strong Normalization for

    E-Print Network [OSTI]

    Abel, Andreas

    Termination Checking with Types Strong Normalization for Mendler­Style Course­Of­Value Recursion can be separated into two parts: As the first step, partial correctness is established by verifying that a program matches its specification; then, termination is shown to obtain full correctness. For practical

  9. Termination Checking with Types Strong Normalization for

    E-Print Network [OSTI]

    Abel, Andreas

    Termination Checking with Types Strong Normalization for Mendler-Style Course-Of-Value Recursion can be separated into two parts: As the first step, partial correctness is established by verifying that a program matches its specification; then, termination is shown to obtain full correctness. For practical

  10. Evaluation of potential severe accidents during low power and shutdown operations at Grand Gulf, Unit 1: Analysis of core damage frequency from internal events for Plant Operational State 5 during a refueling outage. Volume 2, Part 3: Internal Events Appendices I and J

    SciTech Connect (OSTI)

    Yakle, J. [Science Applications International Corp., Albuquerque, NM (United States); Darby, J. [Science and Engineering Associates, Inc., Albuquerque, NM (United States); Whitehead, D.; Staple, B. [Sandia National Labs., Albuquerque, NM (United States)

    1994-06-01

    This report provides supporting documentation for various tasks associated with the performance of the probablistic risk assessment for Plant Operational State 5 during a refueling outage at Grand Gulf, Unit 1 as documented in Volume 2, Part 1 of NUREG/CR-6143.

  11. Normal Conditions of Transport Truck Test of a Surrogate Fuel...

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

    Normal Conditions of Transport Truck Test of a Surrogate Fuel Assembly. Citation Details In-Document Search Title: Normal Conditions of Transport Truck Test of a Surrogate Fuel...

  12. Status of High Power Tests of Normal Conducting Short Standing...

    Office of Scientific and Technical Information (OSTI)

    Status of High Power Tests of Normal Conducting Short Standing Wave Structures Citation Details In-Document Search Title: Status of High Power Tests of Normal Conducting Short...

  13. South Carolina Community Lights Up the Season with Energy-Efficient...

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

    South Carolina Community Lights Up the Season with Energy-Efficient Holiday Lights South Carolina Community Lights Up the Season with Energy-Efficient Holiday Lights December 20,...

  14. ORIGINAL PAPER Social dominance, seasonal movements, and spatial

    E-Print Network [OSTI]

    Getz, Wayne M.

    ORIGINAL PAPER Social dominance, seasonal movements, and spatial segregation in African elephants system radio telemetry provide data to evaluate the influence of social relationships on population elephant social groups despite the infrequent occur- rence of contests over resources and lack

  15. Vitamin D (25OHD) Serum Seasonality in the United States.

    E-Print Network [OSTI]

    Kasahara, Amy K; Singh, Ravinder J; Noymer, Andrew

    2013-01-01

    on the interaction of vitamin D with the immune system.8 | Issue 6 | e65785 Vitamin D (25OHD) Serum Seasonality inn F, Aujla SJ, et al. (2012) Vitamin D and asthma. American

  16. Oxygen isotope records of carboniferous seasonality on the Russian platform 

    E-Print Network [OSTI]

    Wang, Huayu

    1998-01-01

    Seven isotopic and eight trace element (TE) profiles across shell growth lines are presented, based on over 1000 stable isotope and electron microprobe analyses on six brachiopod shells (Gigantoproductus), to quantify seasonal temperature change...

  17. Fall: Energy Saving Changes with the Season | Department of Energy

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

    Laboratory I'm sure you've noticed the change in seasons by now. Fall brings cooler weather, and with it my thoughts turn to warm things like putting blankets on the couch,...

  18. The seasonality of aerosol properties in Big Bend National Park 

    E-Print Network [OSTI]

    Allen, Christopher Lee

    2007-04-25

    ), to characterize the seasonal variability of the Big Bend regions aerosol optical properties. Mass extinction efficiencies and relative humidity scattering enhancement factors were calculated for both externally and internally mixed aerosol populations for all size...

  19. 28 CITRUS INDUSTRY February 2012 he season for fungal foliar

    E-Print Network [OSTI]

    Burns, Jacqueline K.

    28 CITRUS INDUSTRY · February 2012 T he season for fungal foliar diseases is just around the corner-Drive · Heavy duty Stainless Steel Pump ­ handles virtually any tank mix · Multi-Directional, Adjustable Nozzles

  20. Buying an Appliance this Holiday Season? ENERGY STAR Products...

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

    Efficiency and Renewable Energy How can I participate? Look for the ENERGY STAR label to find energy-efficient appliances. It's the holiday season, which is a perfect time...

  1. Mexico's Second City: The 1971-72 Season.

    E-Print Network [OSTI]

    Leinaweaver, Richard E.

    1972-10-01

    was excellent, the music fit the word and the deed, and indeed it was the season's highpoint. Unión Nacional de Autores brought Felipe Santander's Luna de miel para . . . diez from Mexico and somewhat dishonestly attempted to capitalize on Zara tustra... was excellent, the music fit the word and the deed, and indeed it was the season's highpoint. Unión Nacional de Autores brought Felipe Santander's Luna de miel para . . . diez from Mexico and somewhat dishonestly attempted to capitalize on Zara tustra...

  2. Directions to the Ecole Normale Suprieure de Lyon The Ecole Normale Suprieure de Lyon

    E-Print Network [OSTI]

    Dauxois, Thierry

    Directions to the Ecole Normale Supérieure de Lyon The Ecole Normale Supérieure de Lyon is located in Gerland, a neighborhood in the southern part of Lyon, not far from the Rhône river and the Halle Tony. How to get to l'ENS-Lyon ... #12;· From Lyon-Saint Exupéry (Satolas) airport Every 20 min, a shuttle

  3. Influences on seasonal ski worker intention to return and indicators and standards of quality for seasonal ski jobs 

    E-Print Network [OSTI]

    Ismert, Matthew D

    2002-01-01

    in the job experience; (6) the level of personal job satisfaction perceived by the seasonal employee. The relationship between these factors and intention to return was examined. Results revealed that more money and more job challenge have a significant...

  4. Columbia River Basin Seasonal Volumes and Statistics, 1928-1989. 1990 Level Modified Streamflows Computed Seasonal Volumes 61-Year Statistics.

    SciTech Connect (OSTI)

    A.G. Crook Company

    1993-04-01

    This report was prepared by the A.G. Crook Company, under contract to Bonneville Power Administration, and provides statistics of seasonal volumes and streamflow for 28 selected sites in the Columbia River Basin.

  5. Normal force controlled rheology for thermoreversible gels

    E-Print Network [OSTI]

    Bosi Mao; Thibaut Divoux; Patrick Snabre

    2015-08-07

    A wide range of thermoreversible gels are prepared by cooling down to ambient temperature hot aqueous solutions of polymers. During the sol-gel transition, such soft solids may experience a volume contraction leading to experimental issues regarding rheological measurements such as the stress-induced release of solvent, and the partial loss of contact between the sample and the shear cell. In this article, we revisit the formation of thermoreversible gels through a series of benchmark experiments conducted on agar gels in a plate-plate geometry. Monitoring the gelation with a constant gap results in an artificial drift of the gel elastic modulus $G'$ because of the sample contraction. We show that maintaining a constant normal force equals to zero instead of a constant gap allows $G'$ to reach a plateau as the gap variation compensates the sample contraction. The latter method provides a way to measure more reliably the gel linear properties with either rough or smooth boundary conditions, and allows us to quantify the sample contraction. Furthermore, we also unravel two subtle artifacts associated with metallic boundary conditions that may impact rheological measurements during the early stage of the gelation. We show that the slow oxidation of the plate by the solution and/or the presence of an oil layer around the sample, that is traditionally used to prevent evaporation, may both lead to a premature and artificial growth of $G'$ which should not be misinterpreted as the formation of a pre-gel. Finally, we illustrate the relevance of the controlled normal force protocol, by investigating the influence of thermal history on the mechanical properties of agar gels. Our work offers an extensive review of the artifacts associated with the rheology of thermoreversible gels and paves the way for a more systematic use of normal force controlled rheology.

  6. A laboratory study of the seasonal life history and seasonal abundance of the black cutworm, Agrotis ipsilon (Hufnagel 

    E-Print Network [OSTI]

    Latham, Elwin Eugene

    1973-01-01

    . Seasonal History of Agrotis ~l allen (Hufnagel) Development of Artificial Diets for Laboratory Use Laboratory Rearing of ~rotis ~l silon. Head Capsule Measurements . Seasonal Abundance of ~A retie ~i ellen in Texas MATERIALS AND METHODS Establishment.... 40 40 CONCLUSIONS REFERENCES CITED. 50 53 VITA. 57 f Table 1 LIST OF TABLES Ingredients of the artificial diet used for rearing black cutworm larvae Page . 21 Life history of black cutworm moths maintained in the laboratory at College...

  7. ARM - Measurement - Shortwave broadband direct normal irradiance

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Comments?govInstrumentsnoaacrnBarrow, Alaska Outreach Homepolarization ARM Data Discoverydiffusedirect normal

  8. Local asymptotic normality in quantum statistics

    E-Print Network [OSTI]

    Madalin Guta; Anna Jencova

    2007-05-24

    The theory of local asymptotic normality for quantum statistical experiments is developed in the spirit of the classical result from mathematical statistics due to Le Cam. Roughly speaking, local asymptotic normality means that the family varphi_{\\theta_{0}+ u/\\sqrt{n}}^{n} consisting of joint states of n identically prepared quantum systems approaches in a statistical sense a family of Gaussian state phi_{u} of an algebra of canonical commutation relations. The convergence holds for all "local parameters" u\\in R^{m} such that theta=theta_{0}+ u/sqrt{n} parametrizes a neighborhood of a fixed point theta_{0}\\in Theta\\subset R^{m}. In order to prove the result we define weak and strong convergence of quantum statistical experiments which extend to the asymptotic framework the notion of quantum sufficiency introduces by Petz. Along the way we introduce the concept of canonical state of a statistical experiment, and investigate the relation between the two notions of convergence. For reader's convenience and completeness we review the relevant results of the classical as well as the quantum theory.

  9. SEASONAL ABUNDANCE OF CLAM LARVAE IN RHODE ISLAND WATERS, 1950-52

    E-Print Network [OSTI]

    summer and probably until late fall. Stafford (1912) gives the spawning season in Malpeque, Prince Edward

  10. Overview Report: Normal and Emergency Operation Visualization

    SciTech Connect (OSTI)

    Greitzer, Frank L.

    2011-05-01

    This is an overview report to document and illustrate methods used in a project entitled “Normal and Emergency Operations Visualization” for a utility company, conducted in 2009-2010 timeframe with funding from the utility company and the U.S. Department of Energy. The original final report (about 180 pages) for the project is not available for distribution because it alludes to findings that assessed the design of an operational system that contained proprietary information; this abridged version contains descriptions of methods and some findings to illustrate the approach used, while avoiding discussion of sensitive or proprietary information. The client has approved this abridged version of the report for unlimited distribution to give researchers and collaborators the benefit of reviewing the research concepts and methods that were applied in this study.

  11. Asymptotic normalization coefficients from ab initio calculations

    E-Print Network [OSTI]

    Kenneth M. Nollett; R. B. Wiringa

    2011-04-14

    We present calculations of asymptotic normalization coefficients (ANCs) for one-nucleon removals from nuclear states of mass numbers 3 to 9. Our ANCs were computed from variational Monte Carlo solutions to the many-body Schroedinger equation with the combined Argonne v18 two-nucleon and Urbana IX three-nucleon potentials. Instead of computing explicit overlap integrals, we applied a Green's function method that is insensitive to the difficulties of constructing and Monte Carlo sampling the long-range tails of the variational wave functions. This method also allows computation of the ANC at the physical separation energy, even when it differs from the separation energy for the Hamiltonian. We compare our results, which for most nuclei are the first ab initio calculations of ANCs, with existing experimental and theoretical results and discuss further possible applications of the technique.

  12. Stone-Cech remainder which make continuous images normal

    E-Print Network [OSTI]

    Fleissner, William G.; Levy, Ronnie

    1989-07-01

    from a normal space X onto a regular space Y , then there are a space Z and a perfect map bf : Z —» Y extending / such that X C Z C ßX . If / is a continuous surjection from normal X onto Tychonov Y and ßX\\X is sequential, then Y is normal. More... generally, if / is a continuous surjection from normal X onto regular Y and ßX\\X has the property that countably compact subsets are closed (this property is called C-closed), then Y is normal. There is an example of a normal space X such that ßX\\X is C...

  13. Effects of the seasonal cycle on superrotation in planetary atmospheres

    SciTech Connect (OSTI)

    Mitchell, Jonathan L. [Department of Earth and Space Sciences, University of California Los Angeles, Los Angeles, CA 90095 (United States); Vallis, Geoffrey K. [College of Engineering, Mathematics and Physical Science, Exeter University, Exeter (United Kingdom); Potter, Samuel F. [Atmospheric and Oceanic Sciences Program, Princeton University, NJ 08544 (United States)

    2014-05-20

    The dynamics of dry atmospheric general circulation model simulations forced by seasonally varying Newtonian relaxation are explored over a wide range of two control parameters and are compared with the large-scale circulation of Earth, Mars, and Titan in their relevant parameter regimes. Of the parameters that govern the behavior of the system, the thermal Rossby number (Ro) has previously been found to be important in governing the spontaneous transition from an Earth-like climatology of winds to a superrotating one with prograde equatorial winds, in the absence of a seasonal cycle. This case is somewhat unrealistic as it applies only if the planet has zero obliquity or if surface thermal inertia is very large. While Venus has nearly vanishing obliquity, Earth, Mars, and Titan (Saturn) all have obliquities of ?25° and varying degrees of seasonality due to their differing thermal inertias and orbital periods. Motivated by this, we introduce a time-dependent Newtonian cooling to drive a seasonal cycle using idealized model forcing, and we define a second control parameter that mimics non-dimensional thermal inertia of planetary surfaces. We then perform and analyze simulations across the parameter range bracketed by Earth-like and Titan-like regimes, assess the impact on the spontaneous transition to superrotation, and compare Earth, Mars, and Titan to the model simulations in the relevant parameter regime. We find that a large seasonal cycle (small thermal inertia) prevents model atmospheres with large thermal Rossby numbers from developing superrotation by the influences of (1) cross-equatorial momentum advection by the Hadley circulation and (2) hemispherically asymmetric zonal-mean zonal winds that suppress instabilities leading to equatorial momentum convergence. We also demonstrate that baroclinic instabilities must be sufficiently weak to allow superrotation to develop. In the relevant parameter regimes, our seasonal model simulations compare favorably to large-scale, seasonal phenomena observed on Earth and Mars. In the Titan-like regime the seasonal cycle in our model acts to prevent superrotation from developing, and it is necessary to increase the value of a third parameter—the atmospheric Newtonian cooling time—to achieve a superrotating climatology.

  14. Seasonal versus Episodic Performance Evaluation for an Eulerian Photochemical Air Quality Model

    SciTech Connect (OSTI)

    Jin, Ling; Brown, Nancy J.; Harley, Robert A.; Bao, Jian-Wen; Michelson, Sara A; Wilczak, James M

    2010-04-16

    This study presents detailed evaluation of the seasonal and episodic performance of the Community Multiscale Air Quality (CMAQ) modeling system applied to simulate air quality at a fine grid spacing (4 km horizontal resolution) in central California, where ozone air pollution problems are severe. A rich aerometric database collected during the summer 2000 Central California Ozone Study (CCOS) is used to prepare model inputs and to evaluate meteorological simulations and chemical outputs. We examine both temporal and spatial behaviors of ozone predictions. We highlight synoptically driven high-ozone events (exemplified by the four intensive operating periods (IOPs)) for evaluating both meteorological inputs and chemical outputs (ozone and its precursors) and compare them to the summer average. For most of the summer days, cross-domain normalized gross errors are less than 25% for modeled hourly ozone, and normalized biases are between {+-}15% for both hourly and peak (1 h and 8 h) ozone. The domain-wide aggregated metrics indicate similar performance between the IOPs and the whole summer with respect to predicted ozone and its precursors. Episode-to-episode differences in ozone predictions are more pronounced at a subregional level. The model performs consistently better in the San Joaquin Valley than other air basins, and episodic ozone predictions there are similar to the summer average. Poorer model performance (normalized peak ozone biases <-15% or >15%) is found in the Sacramento Valley and the Bay Area and is most noticeable in episodes that are subject to the largest uncertainties in meteorological fields (wind directions in the Sacramento Valley and timing and strength of onshore flow in the Bay Area) within the boundary layer.

  15. Evaluation of potential severe accidents during low power and shutdown operations at Grand Gulf, Unit 1. Volume 2, Part 1C: Analysis of core damage frequency from internal events for plant operational State 5 during a refueling outage, Main report (Sections 11--14)

    SciTech Connect (OSTI)

    Whitehead, D. [Sandia National Labs., Albuquerque, NM (United States); Darby, J. [Science and Engineering Associates, Inc., Albuquerque, NM (United States); Yakle, J. [Science Applications International Corp., Albuquerque, NM (United States)] [and others

    1994-06-01

    This document contains the accident sequence analysis of internally initiated events for Grand Gulf, Unit 1 as it operates in the Low Power and Shutdown Plant Operational State 5 during a refueling outage. The report documents the methodology used during the analysis, describes the results from the application of the methodology, and compares the results with the results from two full power analyses performed on Grand Gulf.

  16. Lyapunov Exponents and Uniform Weak Normally Repelling Invariant Sets

    E-Print Network [OSTI]

    Smith, Hal

    Lyapunov Exponents and Uniform Weak Normally Repelling Invariant Sets Paul Leonard Salceanu and Hal repelling in directions normal to the boundary in which M resides provided all normal Lyapunov exponents that Lyapunov exponents can be used to establish the requisite repelling properties for both discrete

  17. Two tests for multivariate normality based on the characteristic function

    E-Print Network [OSTI]

    Arcones, Miguel A.

    Two tests for multivariate normality based on the characteristic function Miguel A. Arcones-mail:arcones@math.binghamton.edu April 10, 2007 Abstract We present two tests for multivariate normality. The presented tests are based on the L´evy characterization of the normal distribution and on the BHEP tests. The tests are affine

  18. Fractal Fluctuations and Statistical Normal Distribution

    E-Print Network [OSTI]

    A. M. Selvam

    2008-05-22

    Dynamical systems in nature exhibit selfsimilar fractal fluctuations and the corresponding power spectra follow inverse power law form signifying long-range space-time correlations identified as self-organized criticality. The physics of self-organized criticality is not yet identified. The Gaussian probability distribution used widely for analysis and description of large data sets underestimates the probabilities of occurrence of extreme events such as stock market crashes, earthquakes, heavy rainfall, etc. The assumptions underlying the normal distribution such as fixed mean and standard deviation, independence of data, are not valid for real world fractal data sets exhibiting a scale-free power law distribution with fat tails. A general systems theory for fractals visualizes the emergence of successively larger scale fluctuations to result from the space-time integration of enclosed smaller scale fluctuations. The model predicts a universal inverse power law incorporating the golden mean for fractal fluctuations and for the corresponding power spectra, i.e., the variance spectrum represents the probabilities, a signature of quantum systems. Fractal fluctuations therefore exhibit quantum-like chaos. The model predicted inverse power law is very close to the Gaussian distribution for small-scale fluctuations, but exhibits a fat long tail for large-scale fluctuations. Extensive data sets of Dow Jones index, Human DNA, Takifugu rubripes (Puffer fish) DNA are analysed to show that the space/time data sets are close to the model predicted power law distribution.

  19. SEASONAL RECLAIMED WATER QUALITY; AN ASSESSMENT OFQUALITY; AN ASSESSMENT OF

    E-Print Network [OSTI]

    Fay, Noah

    these concerns? Waste Water Treatment Facilities treat water to Waste Water Treatment Facilities treat water and disinfect anyy microorganisms that may be present The majority of Recycled water produced in ArizonaSEASONAL RECLAIMED WATER QUALITY; AN ASSESSMENT OFQUALITY; AN ASSESSMENT OF BIOLOGICAL VARIABILITY

  20. Composting Successes and Failures Extending the Growing Season Workshop

    E-Print Network [OSTI]

    Amin, S. Massoud

    3/18/2014 1 Composting Successes and Failures Extending the Growing Season Workshop LaMoine Nickel University of MN SWROC March 12, 2014 Beginning of compost process 9/6/2013 Finished compost product 11/19/2013 What is Composting Composting is a biological process in which microorganisms convert organic

  1. Seasonal migrations of morphometrically mature male snow crab (Chionoecetes opilio)

    E-Print Network [OSTI]

    for specific reproductive stages. Depth variation associated with this migration was examined to deter- mine in cara- pace width (CW), this migration is assumed to culminate on the outer shelf (depths of 100­200 m313 Seasonal migrations of morphometrically mature male snow crab (Chionoecetes opilio

  2. Heating Season Has Ended An Update On The Numbers

    E-Print Network [OSTI]

    . An Update On The Numbers The attached graphics illustrate electricity consumption over a number of years. As a reference point, electricity comprises 2/3rds of our total fuel costs. Consumption will vary from year)/May and September/October time-frames represent seasonal transition and an opportunity to save on fuel consumption

  3. The seasonal cycle dependence of temperature fluctuations in the atmosphere 

    E-Print Network [OSTI]

    Tobin, Bridget Frances

    1994-01-01

    differences is the larger solar heating gradient in the winter. 40 years of monthly mean surface data and 25 years of monthly mean 700mb and 500mb data is averaged over the seasons. The spatial correlation of four northern hemisphere midlatitude test sites...

  4. Ch.2 Solar Energy to Earth and the Seasons

    E-Print Network [OSTI]

    Pan, Feifei

    Ch.2 Solar Energy to Earth and the Seasons #12;Learning Objective One: The Solar System #12;Milky Aphelion ­ farthest, on July 4 152,083,000 km #12;Learning Objective Two: The Solar Energy #12;What is Solar Energy? Energy is the capacity of a physical system to do work. The unit is Joule (J). Solar

  5. Research Article Seasonal TOC export from seven boreal catchments

    E-Print Network [OSTI]

    Buffam, Ishi

    Research Article Seasonal TOC export from seven boreal catchments in northern Sweden Hjalmar Laudon and its relationship with catchment characteristics. The annual average export of TOC ranged between 36, the four week long spring pe- riod contributed between 50% and 68% of the annual TOC export from the seven

  6. Optimal Maintenance Scheduling of a Power Plant with Seasonal

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    hours for periods with high electricity tariff Sasolburg Gas Engine Power Plant 18 Wärtsila 34 SG statement · Gas engine power plant ­ 18 identical engines with generation capacity = 10 MW ­ Only 1Optimal Maintenance Scheduling of a Power Plant with Seasonal Electricity Tariffs Pedro M. Castro

  7. Radiative forcing from aircraft NOx emissions: mechanisms and seasonal dependence

    E-Print Network [OSTI]

    Stevenson, David

    Radiative forcing from aircraft NOx emissions: mechanisms and seasonal dependence David Stevenson aircraft NOx emissions in January, April, July and October of the 1st year. Figure 1 shows perturbations that the initial NOx anomaly mirrors the aircraft emissions distribution, with only limited transport and mixing

  8. Radiative forcing from surface NOx emissions: spatial and seasonal variations

    E-Print Network [OSTI]

    Stevenson, David

    Radiative forcing from surface NOx emissions: spatial and seasonal variations R. G. Derwent & D. S distributions of methane CH4 and ozone O3 following the emission of pulses of the oxides of nitrogen NOx. Month-long emission pulses of NOx produce deficits in CH4 mixing ratios that bring about negative radiative forcing

  9. Brain Awareness Season OHSU Brain Awareness Lecture Series

    E-Print Network [OSTI]

    Chapman, Michael S.

    Brain Awareness Season OHSU Brain Awareness Lecture Series Fascinating lectures by nationally is an opportunity for educators to learn about brain-related issues. Expert speakers familiar with current for the workshop is available on-line in January at http://seo.ohsu.edu. OHSU Brain Fair The Brain Fair features

  10. Seismicity induced by seasonal groundwater recharge at Mt. Hood, Oregon

    E-Print Network [OSTI]

    Manga, Michael

    and narrow-width pore-fluid pressure signal. Time delays between this seasonal groundwater recharge-fluid pressure fraction, PP/P0W0.1, of the applied near-surface pore-fluid pressure perturbation, P0W0.1 MPa Elsevier B.V. All rights reserved. Keywords: hydroseismicity; groundwater; pore-£uid pressure; permeability

  11. Incorporating Seasonality into Search Suggestions Derived from Intranet Query Logs

    E-Print Network [OSTI]

    Kruschwitz, Udo

    Incorporating Seasonality into Search Suggestions Derived from Intranet Query Logs Stephen Dignum performed on query logs collected for major Web search engines, query log analysis to enhance search search engine can be enhanced by adapting the search system to real users' search behaviour through

  12. QUALITATIVE DISCUSSION OF ATLANTIC BASIN SEASONAL HURRICANE ACTIVITY FOR 2012

    E-Print Network [OSTI]

    Connors, Daniel A.

    QUALITATIVE DISCUSSION OF ATLANTIC BASIN SEASONAL HURRICANE ACTIVITY FOR 2012 We are discontinuing our early December quantitative hurricane forecast for the next year and giving a more qualitative discussion of the factors which will determine next year's Atlantic basin hurricane activity. Our early

  13. Before the Hurricane Season Determine safe evacuation routes inland.

    E-Print Network [OSTI]

    Li, X. Rong

    Before the Hurricane Season Determine safe evacuation routes inland. Learn location of official. Live in a high-rise. Hurricane winds can knock out electricity to elevators, break windows and more bulletins. Hurricane Watch: Hurricane conditions are possible within the specified coastal area. Because

  14. QUALITATIVE DISCUSSION OF ATLANTIC BASIN SEASONAL HURRICANE ACTIVITY FOR 2015

    E-Print Network [OSTI]

    Collett Jr., Jeffrey L.

    1 QUALITATIVE DISCUSSION OF ATLANTIC BASIN SEASONAL HURRICANE ACTIVITY FOR 2015 We discontinued our early December quantitative hurricane forecast in 2012 and are now giving a more qualitative discussion of the factors which will determine next year's Atlantic basin hurricane activity. One of the big uncertainties

  15. Transmission resonances, quasi-normal modes and quasi-normal frequencies: Key analytic results

    E-Print Network [OSTI]

    Boonserm, Petarpa

    2010-01-01

    Exact solutions for transmission amplitudes and transmission probabilities, the existence of transmission resonances, and the closely related study of exact quasi-normal modes [QNMs] and quasi-normal frequencies [QNFs], has had a long and convoluted history - replete with many rediscoveries of previously known results. In this article we shall collect and survey a number of analytic results, and develop several new results, in a form amenable to comparison with the extant literature. In particular we shall discuss the delta-function potential, double-delta-function potential, and asymmetric double-delta-function potential; the step barrier, symmetric rectangular potential barrier, and asymmetric rectangular potential barrier; and then discuss the Eckart potential and its simplifications - the tanh potential and sech^2 potential. The history of the Eckart potential is particularly complicated: Apart from the special case of the Morse potential, other special cases and equivalent reformulations of Eckart's resu...

  16. Forecasting the 2013–2014 influenza season using Wikipedia

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Hickmann, Kyle S.; Fairchild, Geoffrey; Priedhorsky, Reid; Generous, Nicholas; Hyman, James M.; Deshpande, Alina; Del Valle, Sara Y.; Salathé, Marcel

    2015-05-14

    Infectious diseases are one of the leading causes of morbidity and mortality around the world; thus, forecasting their impact is crucial for planning an effective response strategy. According to the Centers for Disease Control and Prevention (CDC), seasonal influenza affects 5% to 20% of the U.S. population and causes major economic impacts resulting from hospitalization and absenteeism. Understanding influenza dynamics and forecasting its impact is fundamental for developing prevention and mitigation strategies. We combine modern data assimilation methods with Wikipedia access logs and CDC influenza-like illness (ILI) reports to create a weekly forecast for seasonal influenza. The methods are appliedmore »to the 2013-2014 influenza season but are sufficiently general to forecast any disease outbreak, given incidence or case count data. We adjust the initialization and parametrization of a disease model and show that this allows us to determine systematic model bias. In addition, we provide a way to determine where the model diverges from observation and evaluate forecast accuracy. Wikipedia article access logs are shown to be highly correlated with historical ILI records and allow for accurate prediction of ILI data several weeks before it becomes available. The results show that prior to the peak of the flu season, our forecasting method produced 50% and 95% credible intervals for the 2013-2014 ILI observations that contained the actual observations for most weeks in the forecast. However, since our model does not account for re-infection or multiple strains of influenza, the tail of the epidemic is not predicted well after the peak of flu season has passed.« less

  17. Forecasting the 2013–2014 influenza season using Wikipedia

    SciTech Connect (OSTI)

    Hickmann, Kyle S.; Fairchild, Geoffrey; Priedhorsky, Reid; Generous, Nicholas; Hyman, James M.; Deshpande, Alina; Del Valle, Sara Y.; Salathé, Marcel

    2015-05-14

    Infectious diseases are one of the leading causes of morbidity and mortality around the world; thus, forecasting their impact is crucial for planning an effective response strategy. According to the Centers for Disease Control and Prevention (CDC), seasonal influenza affects 5% to 20% of the U.S. population and causes major economic impacts resulting from hospitalization and absenteeism. Understanding influenza dynamics and forecasting its impact is fundamental for developing prevention and mitigation strategies. We combine modern data assimilation methods with Wikipedia access logs and CDC influenza-like illness (ILI) reports to create a weekly forecast for seasonal influenza. The methods are applied to the 2013-2014 influenza season but are sufficiently general to forecast any disease outbreak, given incidence or case count data. We adjust the initialization and parametrization of a disease model and show that this allows us to determine systematic model bias. In addition, we provide a way to determine where the model diverges from observation and evaluate forecast accuracy. Wikipedia article access logs are shown to be highly correlated with historical ILI records and allow for accurate prediction of ILI data several weeks before it becomes available. The results show that prior to the peak of the flu season, our forecasting method produced 50% and 95% credible intervals for the 2013-2014 ILI observations that contained the actual observations for most weeks in the forecast. However, since our model does not account for re-infection or multiple strains of influenza, the tail of the epidemic is not predicted well after the peak of flu season has passed.

  18. Snow cover and precipitation impacts on dry season streamflow in the Lower Mekong Basin

    E-Print Network [OSTI]

    ­October) and lowest discharge at the tail end of the dry season (March­ May). The wet season flood pulse is controlled in the region, including deforestation [Costa-Cabral et al., 2008] and dam construction [Campbell, 2007

  19. Water quality as affected by season and prescribed burning, Post Oak Savannah, Texas 

    E-Print Network [OSTI]

    Landry, Mark S

    1998-01-01

    . For example, total phosphorus (TP) concentration in first post-bum runoff averaged about 500 jig L-1 compared with 100 [tg L-1 TP concentration typical of winter season runoff. Relatively low standard deviations associated with mean seasonal concentrations...

  20. Assessment of Expert Opinion: Seasonal Sheep Preference and Plant Response to Grazing 

    E-Print Network [OSTI]

    Pollock, Meg L; Legg, Colin J; Holland, John P; Theobald, Chris M

    2007-01-01

    Expert opinion was sought on two issues relating to herbivory: seasonal sheep preferences for plant species and seasonal plant response to grazing. Expert opinion is commonly used to parameterize models: it is therefore ...

  1. THE COLEOPTERISTS BULLETIN 34(3), 1980 305 SEASONAL AND SIZE PATTERNS, TROPHIC STRUCTURE,

    E-Print Network [OSTI]

    Miller, Scott

    obtained by fogging trees (Lueheaseeman- nii Triana and Planch) in a moist seasonal forest in the Canal

  2. Impact of the 2008 Hurricane Season on the Natural Gas Industry

    Reports and Publications (EIA)

    2009-01-01

    This report provides an overview of the 2008 Atlantic hurricane season and its impacts on the natural gas industry

  3. SEASONAL MIGRATION, SPECIATION, AND MORPHOLOGICAL CONVERGENCE IN THE GENUS CATHARUS (TURDIDAE)

    E-Print Network [OSTI]

    Winker, Kevin

    of North American bird species north of Mexico are Nearctic­Neotropic migrants, migrating seasonally1052 SEASONAL MIGRATION, SPECIATION, AND MORPHOLOGICAL CONVERGENCE IN THE GENUS CATHARUS (TURDIDAE effects of seasonal migration on evolutionary change within lin- eages is poorly understood, in terms

  4. Seasonal persistence of northern low-and middle-latitude anomalies of ozone and

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    Seasonal persistence of northern low- and middle-latitude anomalies of ozone and other trace gases) Seasonal persistence of northern low- and middle-latitude anomalies of ozone and other trace gases outputs online #12;Seasonal persistence of northern low- and middle-latitude anomalies of ozone and other

  5. On the Persistence of Cold-Season SST Anomalies Associated with the Annular Modes

    E-Print Network [OSTI]

    England, Matthew

    On the Persistence of Cold-Season SST Anomalies Associated with the Annular Modes LAURA M. CIASTO fluxes, and Ekman currents on the persistence of cold-season extratropical sea surface temperature (SST. Observational analysis reveals that during the cold season, SST anomalies associated with the southern annular

  6. Seasonal mixed layer salinity balance of the tropical North Atlantic Ocean

    E-Print Network [OSTI]

    ), seasonal variations of precipitation are more significant and drive a pronounced seasonal cycle of mixed; published 15 February 2008. [1] In this study the causes of the seasonal cycle of mixed layer salinity cycle in sea surface salinity (SSS) with significant spatial inhomogeneity. For example, horizontal

  7. Holocene precipitation seasonality captured by a dual hydrogen and oxygen isotope approach at Steel Lake, Minnesota

    E-Print Network [OSTI]

    Hu, Feng Sheng

    Holocene precipitation seasonality captured by a dual hydrogen and oxygen isotope approach at SteelMenocal Keywords: seasonal precipitation middle Holocene oxygen isotopes hydrogen isotopes forest­prairie boundary midcontinental North America. However, neither the climatic driver nor the seasonal character of precipitation

  8. Extendedrange seasonal hurricane forecasts for the North Atlantic with a hybrid dynamicalstatistical model

    E-Print Network [OSTI]

    Webster, Peter J.

    Extendedrange seasonal hurricane forecasts for the North Atlantic with a hybrid 20 September 2010; published 9 November 2010. [1] A hybrid forecast model for seasonal hurricane between the number of seasonal hurricane and the large scale variables from ECMWF hindcasts. The increase

  9. 5/19/2014 Pulley Radwan 1 Hurricane Season Q&A

    E-Print Network [OSTI]

    Miles, Will

    5/19/2014 Pulley Radwan 1 Hurricane Season Q&A When is hurricane season? Hurricane season runs from June 1 through November 30, although hurricanes sometimes can develop at other times of the year time the Tampa Bay area was hit by a hurricane or tropical storm? The last named storm hit on September

  10. Energy Resources for Hurricane Season | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataEnergyInformation FormManufacturingEnergy |OctoberHurricane Season

  11. Normal Conditions of Transport Truck Test of a Surrogate Fuel...

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

    Normal Conditions of Transport Truck Test of a Surrogate Fuel Assembly. McConnell, Paul E.; Wauneka, Robert; Saltzstein, Sylvia J.; Sorenson, Ken B. Abstract not provided. Sandia...

  12. Log-normal distribution for correlators in lattice QCD?

    E-Print Network [OSTI]

    Thomas DeGrand

    2012-04-20

    Many hadronic correlators used in spectroscopy calculations in lattice QCD simulations appear to show a log-normal distribution at intermediate time separations.

  13. Genome Wide Evaluation of Normal Human Tissue in Response to...

    Office of Scientific and Technical Information (OSTI)

    Wide Evaluation of Normal Human Tissue in Response to Controlled, In vivo Low-Dose Low LET Ionizing Radiation Exposure: Pathways and Mechanisms Final Report, September 2013 Rocke,...

  14. Flavor dependence of normalization constant for an infrared renormalon

    E-Print Network [OSTI]

    Taekoon Lee

    2015-02-09

    An ansatz is proposed for the flavor dependence of the normalization constant for the first IR renormalon in heavy quark pole mass.

  15. Neural Effects of Beta Amyloid in Normal Aging

    E-Print Network [OSTI]

    Mormino, Elizabeth Charlotte

    2011-01-01

    age   categories.  Neurobiol  Aging  1997;  18:  351-­?7.  JK,  McIntosh  AR.  Aging  gracefully:  compensatory  B.  The  effect  of  normal  aging  on  the  coupling  of  

  16. Used Nuclear Fuel Loading and Structural Performance Under Normal...

    Energy Savers [EERE]

    Used Nuclear Fuel Loading and Structural Performance Under Normal Conditions of Transport - Modeling, Simulation and Experimental Integration RD&D Plan Used Nuclear Fuel Loading...

  17. Normal Basis Multiplication Algorithms for GF(2n ) (Full Version)

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    1 Normal Basis Multiplication Algorithms for GF(2n ) (Full Version) Haining Fan, Duo Liu and Yiqi. fan_haining@yahoo.com Abstract - In this paper, we propose a new normal basis multiplication algorithm for GF(2n ). This algorithm can be used to design not only fast software algorithms but also low

  18. Ordered Spaces all of whose Continuous Images are Normal

    E-Print Network [OSTI]

    Fleissner, William G.; Levy, Ronnie

    1989-01-01

    Some spaces, such as compact Hausdorff spaces, have the property that every regular continuous image is normal. In this paper, we look at such spaces. In particular, it is shown that if a normal space has finite Stone-Cech remainder, then every...

  19. N d'ordre: 011 Ecole Normale Suprieure de Lyon

    E-Print Network [OSTI]

    Benoit, Anne

    N d'ordre: 011 Ecole Normale Supérieure de Lyon Laboratoire de l'Informatique du Parallélisme recherches in Computer Science from Ecole Normale Supérieure de Lyon. Scheduling Pipelined Applications. Yves Robert Professor, ENS Lyon, France M. Denis Trystram Professor, IMAG, Grenoble, France #12

  20. DATA NORMALIZATION : A KEY FOR STRUCTURAL HEALTH MONITORING

    SciTech Connect (OSTI)

    Farrar, C. R. (Charles R.); Sohn, H. (Hoon); Worden, K.

    2001-01-01

    Structural health monitoring (SHM) is the implementation of a damage detection strategy for aerospace, civil and mechanical engineering infrastructure. Typical damage experienced by this infrastructure might be the development of fatigue cracks, degradation of structural connections, or bearing wear in rotating machinery. For SHM strategies that rely on vibration response measurements, the ability to normalize the measured data with respect to varying operational and environmental conditions is essential if one is to avoid false-positive indications of damage. Examples of common normalization procedure include normalizing the response measurements by the measured inputs as is commonly done when extracting modal parameters. When environmental cycles influence the measured data, a temporal normalization scheme may be employed. This paper will summarize various strategies for performing this data normalization task. These strategies fall into two general classes: (1) Those employed when measures of the varying environmental and operational parameters are available; (2) Those employed when such measures are not available. Whenever data normalization is performed, one runs the risk that the damage sensitive features to be extracted from the data will be obscured by the data normalization procedure. This paper will summarize several normalization procedures that have been employed by the authors and issues that have arose when trying to implement them on experimental and numerical data.

  1. Oil production models with normal rate curves Dudley Stark

    E-Print Network [OSTI]

    Stark, Dudley

    Oil production models with normal rate curves Dudley Stark School of Mathematical Sciences Queen;Abstract The normal curve has been used to fit the rate of both world and U.S.A. oil production. In this paper we give the first theoretical basis for these curve fittings. It is well known that oil field

  2. New Equipartition Results for Normal Mode Energies of Anharmonic Chains

    E-Print Network [OSTI]

    Henry, Bruce Ian

    New Equipartition Results for Normal Mode Energies of Anharmonic Chains B.I. Henry 1 and T. Szeredi 2;3 Date: 26 September 1995 The canonical and micro­canonical distribution of energy among. If the inter­particle potential is an even function then energy is distributed uniformly among the normal modes

  3. Banded Matrix Fraction Representation of Triangular Input Normal Pairs

    E-Print Network [OSTI]

    Banded Matrix Fraction Representation of Triangular Input Normal Pairs Andrew P. Mullhaupt #3 if and only if A is triangular and AA #3; + BB #3; = I n , where I n is the identity matrix. Input normal and A is a matrix fraction, A = M 1 N , where M and N are triangular matrices of low bandwidth. For single input

  4. On the normalization of the HBT correlation function

    E-Print Network [OSTI]

    D. Miskowiec; S. Voloshin

    1998-03-16

    We discuss the question of the normalization of the correlation function and its consistency with the often used form C(p1,p2) = 1+|f(p1,p2)|^2. We suggest an event mixing method which allows one to obtain absolutely normalized correlation functions from experimental data.

  5. Laser-induced differential normalized fluorescence method for cancer diagnosis

    DOE Patents [OSTI]

    Vo-Dinh, T.; Panjehpour, M.; Overholt, B.F.

    1996-12-03

    An apparatus and method for cancer diagnosis are disclosed. The diagnostic method includes the steps of irradiating a tissue sample with monochromatic excitation light, producing a laser-induced fluorescence spectrum from emission radiation generated by interaction of the excitation light with the tissue sample, and dividing the intensity at each wavelength of the laser-induced fluorescence spectrum by the integrated area under the laser-induced fluorescence spectrum to produce a normalized spectrum. A mathematical difference between the normalized spectrum and an average value of a reference set of normalized spectra which correspond to normal tissues is calculated, which provides for amplifying small changes in weak signals from malignant tissues for improved analysis. The calculated differential normalized spectrum is correlated to a specific condition of a tissue sample. 5 figs.

  6. Laser-induced differential normalized fluorescence method for cancer diagnosis

    DOE Patents [OSTI]

    Vo-Dinh, Tuan (Knoxville, TN); Panjehpour, Masoud (Knoxville, TN); Overholt, Bergein F. (Knoxville, TN)

    1996-01-01

    An apparatus and method for cancer diagnosis are disclosed. The diagnostic method includes the steps of irradiating a tissue sample with monochromatic excitation light, producing a laser-induced fluorescence spectrum from emission radiation generated by interaction of the excitation light with the tissue sample, and dividing the intensity at each wavelength of the laser-induced fluorescence spectrum by the integrated area under the laser-induced fluorescence spectrum to produce a normalized spectrum. A mathematical difference between the normalized spectrum and an average value of a reference set of normalized spectra which correspond to normal tissues is calculated, which provides for amplifying small changes in weak signals from malignant tissues for improved analysis. The calculated differential normalized spectrum is correlated to a specific condition of a tissue sample.

  7. Towards the Efficient Design of Vehicular Ad-Hoc Networks

    E-Print Network [OSTI]

    Dulmage, Jared

    2012-01-01

    OFDM Outage . . . . . . . . . . .Outage probability vs.vs. SNR . . . . . . . . . . . . . . . . . . . . . . Outage

  8. Bibliography of the seasonal thermal energy storage library

    SciTech Connect (OSTI)

    Prater, L.S.; Casper, G.; Kawin, R.A.

    1981-08-01

    The Main Listing is arranged alphabetically by the last name of the first author. Each citation includes the author's name, title, publisher, publication date, and where applicable, the National Technical Information Service (NTIS) number or other document number. The number preceding each citation is the identification number for that document in the Seasonal Thermal Energy Storage (STES) Library. Occasionally, one or two alphabetic characters are added to the identification number. These alphabetic characters indicate that the document is contained in a collection of papers, such as the proceedings of a conference. An Author Index and an Identification Number Index are included. (WHK)

  9. Two Strain Dengue Model with Temporary Cross Immunity and Seasonality

    SciTech Connect (OSTI)

    Aguiar, Maira; Ballesteros, Sebastien; Stollenwerk, Nico [Centro de Matematica e Aplicacoes Fundamentais CMAF, Universidade de Lisboa, Avenida Prof. Gama Pinto 2, 1649-003 Lisboa (Portugal)

    2010-09-30

    Models on dengue fever epidemiology have previously shown critical fluctuations with power law distributions and also deterministic chaos in some parameter regions due to the multi-strain structure of the disease pathogen. In our first model including well known biological features, we found a rich dynamical structure including limit cycles, symmetry breaking bifurcations, torus bifurcations, coexisting attractors including isola solutions and deterministic chaos (as indicated by positive Lyapunov exponents) in a much larger parameter region, which is also biologically more plausible than the previous results of other researches. Based on these findings we will investigate the model structures further including seasonality.

  10. "Season of Giving" launches

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAboutXuRod Hunt (208) 386-52542Devices"Princeton"Season

  11. Laboratory's Season of Giving was a big success

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResourcelogo and masthead BerkeleySiteSeason of Giving big

  12. Normal Agricultural Operations and Dove Hunting in Texas 

    E-Print Network [OSTI]

    Redmon, Larry

    2009-06-01

    of Texans to the field each year for the kickoff of the annual fall hunting season. To increase dove harvest, many hunters engage in preseason scouting to determine flyways and bird concentrations over natural feeding areas and water sources. Over... it is the hunter who is responsible for determining whether a field has been seeded legally, hunters need to know and make sure areas they hunt are in accordance with Texas State and Federal laws prohibiting baiting. Hunters can also benefit from understanding...

  13. Comparing the Impacts of the 2005 and 2008 Hurricanes on U.S...

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

    Hurricanes Katrina, Rita, and Wilma in 2005. Although worst-day outages between both hurricane seasons were comparable, HurricanesKatrina and Rita were more powerful and caused...

  14. Seasonal variations in the subauroral electron temperature enhancement

    SciTech Connect (OSTI)

    Fok, M.C.; Kozyra, J.U.; Warren, M.F. (Univ. of Michigan, Ann Arbor (USA)); Brace, L.H. (NASA Goddard Space Flight Center, Greenbelt, MD (USA))

    1991-06-01

    The subauroral nightside electron temperature peak is one of the phenomena showing the response of the subauroral ionosphere to the influx of magnetic storm energy in the vicinity of the plasmapause. A statistical study of the seasonal variations of the subauroral electron temperature enhancement was undertaken using data from the Langmuir probe experiment on the DE 2 satellite throughout most of the mission (1981-1982). In the winter hemisphere the nighttime background electron temperature is the highest and the magnitude of the peak T{sub e} responds most weakly to the geomagnetic activity. This behavior can be explained by seasonal trends in the nighttime downward heat flux due to conjugate photoelectrons. Moreover, model results indicate that a factor of {approximately}3 increase in heat inflow during equinox relative to solstice is required to raise the electron temperature to a given level. This is a consequence of the higher electron densities at the T{sub e} peak near equinox. The T{sub e} peak occurs on field lines which thread the outer plasmasphere in the vicinity of the plasmapause and thus can be used as a tracer of the plasmapause position. Correlating the position of the T{sub e} peak with K{sub p} (the highest value of 3-hour K{sub p} in the preceding 12 hours) indicates a trend toward a more expanded quiet time plasmasphere and one which is more easily compressed by magnetic storms at equinox than during the solstice period.

  15. Statistical Inference for Models with Intractable Normalizing Constants 

    E-Print Network [OSTI]

    Jin, Ick Hoon

    2011-06-27

    In this dissertation, we have proposed two new algorithms for statistical inference for models with intractable normalizing constants: the Monte Carlo Metropolis-Hastings algorithm and the Bayesian Stochastic Approximation Monte Carlo algorithm...

  16. The normalization of citation counts based on classification systems

    E-Print Network [OSTI]

    Bornmann, Lutz; Barth, Andreas

    2013-01-01

    If we want to assess whether the paper in question has had a particularly high or low citation impact compared to other papers, the standard practice in bibliometrics is to normalize citations in respect of the subject category and publication year. A number of proposals for an improved procedure in the normalization of citation impact have been put forward in recent years. Against the background of these proposals this study describes an ideal solution for the normalization of citation impact: in a first step, the reference set for the publication in question is collated by means of a classification scheme, where every publication is associated with a single principal research field or subfield entry (e. g. via Chemical Abstracts sections) and a publication year. In a second step, percentiles of citation counts are calculated for this set and used to assign the normalized citation impact score to the publications (and also to the publication in question).

  17. Testicular function in normal and poor semen quality stallions 

    E-Print Network [OSTI]

    Bryan, Tina Michelle

    2006-04-12

    The chromosomal location of endocrine genes was established, and relationships between expression of specific endocrine genes and measures of testis function in normal and poor semen quality stallions was assessed. Consensus ...

  18. Mapping Technology Space by Normalizing Technology Relatedness Networks

    E-Print Network [OSTI]

    Alstott, Jeff; Yan, Bowen; Luo, Jianxi

    2015-01-01

    Technology is a complex system, with technologies relating to each other in a space that can be mapped as a network. The technology relatedness network's structure can reveal properties of technologies and of human behavior, if it can be mapped accurately. Technology networks have been made from patent data, using several measures of relatedness. These measures, however, are influenced by factors of the patenting system that do not reflect technologies or their relatedness. We created technology networks that precisely controlled for these impinging factors and normalized them out, using data from 3.9 million patents. The normalized technology relatedness networks were sparse, with only ~20% of technology domain pairs more related than would be expected by chance. Different measures of technology relatedness became more correlated with each other after normalization, approaching a single dimension of technology relatedness. The normalized network corresponded with human behavior: we analyzed the patenting his...

  19. Electron transport in normal-metal/superconductor junctions 

    E-Print Network [OSTI]

    Yan, XZ; Zhao, HW; Hu, Chia-Ren.

    2000-01-01

    On the basis of the Keldysh method of nonequilibrium systems, we develop a theory of electron tunneling in normal-metal-superconductor junctions. By using the tunneling Hamiltonian model (being appropriate for the tight-binding systems...

  20. NORMALITY OF NILPOTENT VARIETIES IN E6 ERIC SOMMERS

    E-Print Network [OSTI]

    Sommers, Eric

    NORMALITY OF NILPOTENT VARIETIES IN E6 ERIC SOMMERS ABSTRACT. We determine which nilpotent orbits for a careful reading of the paper leading to its improvement. 1 #12;2 ERIC SOMMERS Our proof is direct

  1. Converting normal insulators into topological insulators via tuning orbital levels

    E-Print Network [OSTI]

    Shi, Wu-Jun

    Tuning the spin-orbit coupling strength via foreign element doping and modifying bonding strength via strain engineering are the major routes to convert normal insulators to topological insulators. We here propose an ...

  2. Connection between asymptotic normalization coefficients, subthreshold bound states, and resonances 

    E-Print Network [OSTI]

    Mukhamedzhanov, AM; Tribble, Robert E.

    1999-01-01

    We present here useful relations showing the connection between the asymptotic normalization coefficient (ANC) and the fitting parameters in K- and R-matrix theory methods which are often used when analyzing low energy experimental data. It is shown...

  3. Seasonal cycle dependence of temperature fluctuations in the atmosphere. Master's thesis

    SciTech Connect (OSTI)

    Tobin, B.F.

    1994-08-01

    The correlation statistics of meteorological fields have been of interest in weather forecasting for many years and are also of interest in climate studies. A better understanding of the seasonal variation of correlation statistics can be used to determine how the seasonal cycle of temperature fluctuations should be simulated in noise-forced energy balance models. It is shown that the length scale does have a seasonal dependence and will have to be handled through the seasonal modulation of other coefficients in noise-forced energy balance models. The temperature field variance and spatial correlation fluctuations exhibit seasonality with fluctuation amplitudes larger in the winter hemisphere and over land masses. Another factor contributing to seasonal differences is the larger solar heating gradient in the winter.

  4. Diversity, abundance, seasonality and interactions of ants (Hymenoptera: Formicidae) in pecans in Mumford, Robertson Co., Texas 

    E-Print Network [OSTI]

    Calixto Sanchez, Alejandro Antonio

    2005-02-17

    of ants/8 trees) and seasonality in Mumford, TX, in three different treatments ??? 52 22. Dorymyrmex flavus relative nest abundance (number of nests/4 transects) and seasonality in Mumford, TX, in three different treatments..., in three different treatments ??? 56 25. Forelius pruinosus relative abundance (number of ants/8 trees) and seasonality in Mumford, TX, in three different treatments ??? 57 26. Forelius pruinosus relative nest abundance (number of nests/4...

  5. SEASONAL THERMAL ENERGY STORAGE IN AQUIFERS-MATHEMATICAL MODELING STUDIES IN 1979

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2013-01-01

    Aspects of Aquifer Thermal Energy Storage." Lawrencethe Auburn University Thermal Energy Storage Experiment."LBL~l0208 SEASONAL THERMAL ENERGY STORAGE IN AQUIFERS~

  6. State of Maine residential heating oil survey 2001-02 season summary [SHOPP

    SciTech Connect (OSTI)

    Elder, Betsy

    2002-05-22

    This, as the title implies, is a summary report of the price trends for heating oil, propane and kerosene heating fuels for the heating season.

  7. SEASONAL THERMAL ENERGY STORAGE IN AQUIFERS-MATHEMATICAL MODELING STUDIES IN 1979

    E-Print Network [OSTI]

    Tsang, Chin Fu

    2013-01-01

    of Aquifer Thermal Energy Storage." Lawrence Berkeleythe Auburn University Thermal Energy Storage Experiment."LBL~l0208 SEASONAL THERMAL ENERGY STORAGE IN AQUIFERS~

  8. Research Papers Seasonal variability of chlorophyll a in the Mid-Atlantic Bight

    E-Print Network [OSTI]

    presumably replenishes nutrients to the surface waters on the MAB shelf. Thermal stratification re). In temperate seas, seasonal phytoplankton variability has been related to stratification, destratification

  9. Extending the Growing Season Workshop Registration Form. Preregister by Wednesday, March 5, 2014.

    E-Print Network [OSTI]

    Amin, S. Massoud

    the Growing Season Workshop Wednesday, March 12, 2014 from 9:00 to 2:30 ChuckDahn 1804Broadway Emmetsburg

  10. North Pacific carbon cycle response to climate variability on seasonal to decadal timescales

    E-Print Network [OSTI]

    2006-01-01

    in the subarctic North Pacific Ocean, Global Biogeochem.of the tropical Pacific Ocean: I. Seasonal and interannualthe subtropical North Pacific Ocean, Nature, 424, 754 – 757.

  11. Influence of stand age on the magnitude and seasonality of carbon fluxes in Canadian forests

    E-Print Network [OSTI]

    2012-01-01

    seasons lead to less carbon sequestration by a subalpineboreal forests to global carbon sequestration (Kurz et al. ,off- set point when carbon sequestration equals carbon loss

  12. Seasonality in the Natural Gas Balancing Item: Historical Trends and Corrective Measures

    Reports and Publications (EIA)

    2010-01-01

    This special report examines an underlying cause of the seasonal pattern in the balancing item published in the Natural Gas Monthly.

  13. North American Electric Reliability Council Outage Announcement...

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

    p.m. EDT, major losses of electric load occurred in the northeastern United States and Canada in the Eastern Interconnection. Although the exact cause is not known at present, the...

  14. Avoid communication outages in decentralized planning

    E-Print Network [OSTI]

    Ponda, Sameera S.

    This paper proposes an extension to the Consensus-Based Bundle Algorithm (CBBA), a distributed task allocation framework previously developed at the Aerospace Control Laboratory (ACL), MIT, designed to address complex ...

  15. Evidences Behind Skype Outage Dario Rossi 1

    E-Print Network [OSTI]

    to a service blackout that lasted for more than two days: this paper aims at throwing light to this event

  16. RESOLVED: Projectb filesystem outage July 9, 2012

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMassR&D100 Winners * Impacts on Global TechnologyProceeding Sign In About22

  17. August 14, 2003 Power Outages Â… Announcement

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p uBUS SERVICE SUBSIDIES AT THE IDAHO1997 AUDITTribalP. Vancko

  18. Track NERSC Outages in Google Calendar

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With U.S.Week DayDr.Theories81Towards HeavyCoupled EarthJuneTrack

  19. North American Electric Reliability Council Outage Announcement |

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested Parties -DepartmentAvailable forSite |n t e g r i t y - S e

  20. Refinery Outages: Fourth-Quarter 2015

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNaturalOctober 2015 Alcohol. TheData -1 Idle

  1. Oceanic stochastic parametrizations in a seasonal forecast system

    E-Print Network [OSTI]

    Andrejczuk, M; Juricke, S; Palmer, T N; Weisheimer, A; Zanna, L

    2015-01-01

    We study the impact of three stochastic parametrizations in the ocean component of a coupled model, on forecast reliability over seasonal timescales. The relative impacts of these schemes upon the ocean mean state and ensemble spread are analyzed. The oceanic variability induced by the atmospheric forcing of the coupled system is, in most regions, the major source of ensemble spread. The largest impact on spread and bias came from the Stochastically Perturbed Parametrization Tendency (SPPT) scheme - which has proven particularly effective in the atmosphere. The key regions affected are eddy-active regions, namely the western boundary currents and the Southern Ocean. However, unlike its impact in the atmosphere, SPPT in the ocean did not result in a significant decrease in forecast error. Whilst there are good grounds for implementing stochastic schemes in ocean models, our results suggest that they will have to be more sophisticated. Some suggestions for next-generation stochastic schemes are made.

  2. Patches in the polar ionosphere: UT and seasonal dependence

    SciTech Connect (OSTI)

    Sojka, J.J.; Bowline, M.D.; Schunk, R.W. [Utah State Univ., Logan, UT (United States)] [Utah State Univ., Logan, UT (United States)

    1994-08-01

    The seasonal and UT dependencies of patches in the polar ionosphere are simulated using the Utah State University time dependent ionospheric model (TDIM). Patch formation is achieved by changing the plasma convection pattern in response to temporal changes in the interplanetary magnetic field (IMF) B{sub y} component during periods of southward IMF. This mechanism redirects the plasma flow from the dayside high-density region, which is the source of the tongue of ionization (TOI) density feature, through the throat and leads to patches, rather than a continuous TOI. The model predicts that the patches are absent at winter solstice (northern hemisphere) between 0800 and 1200 UT and that they have their largest seasonal intensity at winter solstice between 2000 and 2400 UT. Between winter solstice and equinox, patches are strong and present all day. Patches are present in summer as well, although their intensity is only tens of percent above the background density. These winter-to-equinox findings are also shown to be consistent with observations. The model was also used to predict times at which patch observations could be performed to determine the contributions from other patch mechanisms. This observational window is {+-} 20 days about winter solstice between 0800 and 1200 UT in the northern hemisphere. In this observational window the TOI is either absent or reduced to a very low density. Hence the time dependent electric field mechanism considered in this study does not produce patches, and if they are observed, then they must be due to some other mechanism. 32 refs., 10 figs.

  3. Method for construction of normalized cDNA libraries

    DOE Patents [OSTI]

    Soares, M.B.; Efstratiadis, A.

    1998-11-03

    This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form comprising: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3` noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to appropriate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library. This invention also provides normalized cDNA libraries generated by the above-described method and uses of the generated libraries. 19 figs.

  4. Method for construction of normalized cDNA libraries

    DOE Patents [OSTI]

    Soares, Marcelo B. (New York, NY); Efstratiadis, Argiris (Englewood, NJ)

    1998-01-01

    This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form comprising: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3' noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to appropriate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library. This invention also provides normalized cDNA libraries generated by the above-described method and uses of the generated libraries.

  5. Closeness to spheres of hypersurfaces with normal curvature bounded below

    SciTech Connect (OSTI)

    Borisenko, A A; Drach, K D

    2013-11-30

    For a Riemannian manifold M{sup n+1} and a compact domain ?? M{sup n+1} bounded by a hypersurface ?? with normal curvature bounded below, estimates are obtained in terms of the distance from O to ?? for the angle between the geodesic line joining a fixed interior point O in ? to a point on ?? and the outward normal to the surface. Estimates for the width of a spherical shell containing such a hypersurface are also presented. Bibliography: 9 titles.

  6. The normalized Laplacian spectrum of subdivisions of a graph

    E-Print Network [OSTI]

    Pinchen Xie; Zhongzhi Zhang; Francesc Comellas

    2015-10-07

    Determining and analyzing the spectra of graphs is an important and exciting research topic in theoretical computer science. The eigenvalues of the normalized Laplacian of a graph provide information on its structural properties and also on some relevant dynamical aspects, in particular those related to random walks. In this paper, we give the spectra of the normalized Laplacian of iterated subdivisions of simple connected graphs. As an example of application of these results we find the exact values of their multiplicative degree-Kirchhoff index, Kemeny's constant and number of spanning trees.

  7. Method for construction of normalized cDNA libraries

    DOE Patents [OSTI]

    Soares, M.B.; Efstratiadis, A.

    1996-01-09

    This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form. The method comprises: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3` noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to moderate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library. 4 figs.

  8. Method for construction of normalized cDNA libraries

    DOE Patents [OSTI]

    Soares, Marcelo B. (New York, NY); Efstratiadis, Argiris (Englewood, NJ)

    1996-01-01

    This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form comprising: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3' noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to moderate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library.

  9. VEGETATION CLASSIFICATION USING SEASONAL VARIATIONS OF SCATTEROMETER DATA AT C-BAND AND

    E-Print Network [OSTI]

    Long, David G.

    VEGETATION CLASSIFICATION USING SEASONAL VARIATIONS OF SCATTEROMETER DATA AT C-BAND AND KU for submission to the university library. Date Dr. David Long Chair, Graduate Committee Accepted of Engineering and Technology #12;ABSTRACT VEGETATION CLASSIFICATION USING SEASONAL VARIATIONS OF SCATTEROMETER

  10. 8-14 Day Outlook 30-Day and 90-Day Seasonal Outlook

    E-Print Network [OSTI]

    8-14 Day Outlook 30-Day and 90-Day Seasonal Outlook ENSO Advisory Climate Diagnostics and Prediction Workshop Monthly Climate Bulletin Drought Advisory Drought Outlook Ozone Winter Summary UV Index Forecast Seasonal Hurricane Outlook CDAS Reanalysis NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION

  11. Sex Differences, but No Seasonal Variations in the Hippocampus of Food-

    E-Print Network [OSTI]

    Jacobs, Lucia

    - onstrated in food-caching animals. Such results suggest that sexually dimorphic spatial learning (sex in the structure of the hippocampus; however, this sexual dimorphism does not vary seasonally in adulthood; sexual dimorphism; spatial learning; seasonal behavior; wild adult eastern gray squirrels A number

  12. Seasonal and Radial Trends in Saturn's Thermal Plasma Between the Main Rings1 and Enceladus2

    E-Print Network [OSTI]

    Johnson, Robert E.

    Seasonal and Radial Trends in Saturn's Thermal Plasma Between the Main Rings1 and Enceladus2 that the16 magnetospheric plasma between the main rings and Enceladus exhibited a time17 dependence that we attributed to a seasonally variable source of oxygen from the main18 rings (Elrod et al., 2012

  13. Seasonal Mean Circulation in the Yellow Sea A ModelGenerated Climatology

    E-Print Network [OSTI]

    . Data in­ puts include seasonal hydrography, seasonal mean wind and river input, and oceanic tides pattern. The Changjiang discharge is driven offshore toward the Korean Strait by the summer wind. Results for winter and summer exhibit two distinct circulation modes. In winter, strong northerly wind

  14. Assessing Seasonal Transport and Deposition of Agricultural Emissions in Eastern North Carolina, U.S.A.

    E-Print Network [OSTI]

    Raman, Sethu

    Assessing Seasonal Transport and Deposition of Agricultural Emissions in Eastern North Carolina, U strategies. The eastern portion of North Carolina is used as a case example due to its high, localized eastern North Carolina. Diurnal and seasonal patterns were identified for dispersion and concentration

  15. Seasonal Mesoscale and Submesoscale Eddy Variability along the North Pacific Subtropical Countercurrent

    E-Print Network [OSTI]

    Qiu, Bo

    Seasonal Mesoscale and Submesoscale Eddy Variability along the North Pacific Subtropical abundant in mesoscale eddies, but also exhibits prominent submesoscale eddy features. Output from a 1 the seasonal STCC variability in the mesoscale versus submesoscale ranges. Resolving the eddy scales of .150 km

  16. Preliminary Analysis of a Solar Heat Pump System with Seasonal Storage for Heating and Cooling 

    E-Print Network [OSTI]

    Yu, G.; Chen, P.; Dalenback, J.

    2006-01-01

    For higher solar fraction and suitability for both heating and cooling, a solar heat pump system with seasonal storage was studied in this paper. The system scheme and control strategy of a solar heat pump system with seasonal storage for heating...

  17. Seasonal Sensitivity on COBEL-ISBA Local Forecast System for Fog and Low Clouds

    E-Print Network [OSTI]

    Seasonal Sensitivity on COBEL-ISBA Local Forecast System for Fog and Low Clouds STEVIE ROQUELAURE of uncertainty that lead to dispersion. Key words: Local numerical forecast system, fog and low clouds, seasonal prediction system. 1. Introduction Accurate prediction of fog and low clouds is one of the main issues

  18. Spatial coherence and seasonal predictability of monsoon onset over Indonesia1 Vincent Moron*,1

    E-Print Network [OSTI]

    Robertson, Andrew W.

    1 Spatial coherence and seasonal predictability of monsoon onset over Indonesia1 2 3, Bogor, Indonesia9 10 11 submitted to Journal of Climate12 13 revised version14 15 May 200816 17 predictability of monsoon onset during the August­December season over Indonesia is19 studied through analysis

  19. Cattle grazing behavior with season-long free-choice access to four forage types

    E-Print Network [OSTI]

    Fehmi, Jeffrey S.

    Cattle grazing behavior with season-long free-choice access to four forage types Jeffrey S. Fehmi Abstract This experiment investigated how season-long, free-choice grazing affected weekly cattle grazing pastures was uneven and negatively correlated with salt and water sites. Cattle can rotate themselves among

  20. Transport pathways for Asian pollution outflow over the Pacific: Interannual and seasonal variations

    E-Print Network [OSTI]

    Liu, Hongyu

    is frontal lifting ahead of southeastward-moving cold fronts (the leading edge of cold surges) and transport with the cold fronts to promote the transport of Chinese pollution to the free troposphere. Outflow of seasonalTransport pathways for Asian pollution outflow over the Pacific: Interannual and seasonal

  1. Monitoring groundwater storage changes in the highly1 seasonal humid tropics: validation of GRACE measurements2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Monitoring groundwater storage changes in the highly1 seasonal humid tropics: validation of GRACE the seasonality and trend in groundwater storage associated with intensive groundwater19 abstraction for dry to 2007) groundwater storage changes21 (GWS) correlate well (r=0.77 to 0.93, p-value

  2. Convex Deep Learning via Normalized Kernels Ozlem Aslan

    E-Print Network [OSTI]

    Schuurmans, Dale

    Convex Deep Learning via Normalized Kernels ¨Ozlem Aslan Dept of Computing Science University Deep learning has been a long standing pursuit in machine learning, which until recently was hampered meth- ods while expanding the range of representable structures toward deep models. In this paper, we

  3. Computation of Normal Logic Programs by Fibring Neural Networks

    E-Print Network [OSTI]

    Seda, Anthony Karel

    Computation of Normal Logic Programs by Fibring Neural Networks Vladimir Komendantsky1 and Anthony of the integration of fibring neural net- works (a generalization of conventional neural networks) into model by fibring neural networks of semantic immediate consequence operators TP and TP , where TP denotes

  4. RADIO PROCEDURES DURING NORMAL OPERATING CONDITIONS CALLING AND COMMUNICATING TECHNIQUES

    E-Print Network [OSTI]

    Brody, James P.

    RADIO PROCEDURES DURING NORMAL OPERATING CONDITIONS CALLING AND COMMUNICATING TECHNIQUES The secret are going to say. Many people with radios have a tendency to talk and/or repeat too much. Say what you need until it is second nature. Practicing proper day-to-day radio procedures will make emergency radio

  5. PAS kinase is required for normal cellular energy balance

    E-Print Network [OSTI]

    Rutter, Jared

    PAS kinase is required for normal cellular energy balance Huai-Xiang Hao*, Caleb M. Cardon*, Wojtek in a cell-autonomous manner to maintain cellular energy homeostasis and is a potential therapeutic target). The World Health Organization estimates that the current decade will witness a 46% increase in diabetes

  6. Coarser connected topologies and non-normality points

    E-Print Network [OSTI]

    Yengulalp, Lynne Christine

    2009-01-01

    point of the Stone-Cech remainder of a space a non-normality point of the remainder? We will discuss the question in the case that X is a discrete space and then when X is a metric space without isolated points. We show that under certain set...

  7. Extremal unital completely positive normal maps and its symmetries

    E-Print Network [OSTI]

    Anilesh Mohari

    2015-07-30

    We consider the convex set of ( unital ) positive ( completely ) maps from a $C^*$ algebra $\\cla$ to a von-Neumann sub-algebra $\\clm$ of $\\clb(\\clh)$, the algebra of bounded linear operators on a Hilbert space $\\clh$ and study its extreme points via its canonical lifting to the convex set of ( unital ) positive ( complete ) normal maps from $\\hat{\\cla}$ to $\\clm$, where $\\hat{\\cla}$ is the universal enveloping von-Neumann algebra over $\\cla$. If $\\cla=\\clm$ and a ( complete ) positive operator $\\tau$ is a unique sum of a normal and a singular ( complete ) positive maps. Furthermore, a unital complete positive map is a unique convex combination of unital normal and singular complete positive maps. We used a duality argument to find a criteria for extremal elements in the convex set of unital completely positive maps having a given faithful normal invariant state. In our investigation, gauge symmetry in Stinespring representation and Kadison theorem on order isomorphism played an important role.

  8. Mixed Inductive/Coinductive Types and Strong Normalization

    E-Print Network [OSTI]

    Abel, Andreas

    and coinductive types. Most research on inductive types has focused on the iso-style, i. e., there are explicit programming language. Research partially supported by the EU coordination action TYPES (510996). #12;InMixed Inductive/Coinductive Types and Strong Normalization Andreas Abel Department of Computer

  9. Some Properties of Realcompact Subspaces and Coarser Normal Spaces

    E-Print Network [OSTI]

    Niknejad, Jila

    2009-04-23

    William Fleissner. In 1997 Buzjakova proved that for a pseudocompact space X, there exists an ordinal such that the product of X and that ordinal condenses onto a normal space if and only if X condenses onto a compact space. In the third chapter, we extend...

  10. LARGE-SCALE NORMAL COORDINATE ANALYSIS ON DISTRIBUTED

    E-Print Network [OSTI]

    Raghavan, Padma

    is presented in this paper. This method combines the implicitly restarted Lanczos algorithm with a state) plays an important role in the study of vibrational and thermal properties of various molecular by a collection of fundamental (normal) vibrational modes. These modes correspond to eigenvectors of a matrix

  11. Electromechanical imaging of the myocardium at normal and pathological states

    E-Print Network [OSTI]

    Konofagou, Elisa E.

    Electromechanical imaging of the myocardium at normal and pathological states Mathieu Pernot here a method for measuring the electromechanical coupling properties in the myocardium. Our method of the electromechanical wave is found to decrease to approximately 0.66 m/s in the ischemic region. I. INTRODUCTION

  12. Computational Model for Forced Expiration from Asymmetric Normal Lungs

    E-Print Network [OSTI]

    Lutchen, Kenneth

    Computational Model for Forced Expiration from Asymmetric Normal Lungs ADAM G. POLAK 1 losses along the airway branches. Calculations done for succeeding lung volumes result in the semidynamic to the choke points, characteristic differences of lung regional pressures and volumes, and a shape

  13. Jacobi's bound and normal forms computations. A historical survey

    E-Print Network [OSTI]

    Ollivier, François

    Jacobi's bound and normal forms computations. A historical survey F. Ollivier, LIX UMRS CNRS'evich Pankratiev. Abstract Jacobi is one of the most famous mathematicians of his century. His name is attached of Jacobi's results on ordinary differential equations and the available, published or unpublished material

  14. TESTS FOR NORMALITY BASED ON DENSITY ESTIMATORS OF CONVOLUTIONS

    E-Print Network [OSTI]

    Wefelmeyer, Wolfgang

    TESTS FOR NORMALITY BASED ON DENSITY ESTIMATORS OF CONVOLUTIONS ANTON SCHICK, YISHI WANG-type kernel density estimator, goodness-of-fit test. Anton Schick was supported by NSF Grant DMS0906551. 1 #12;2 ANTON SCHICK, YISHI WANG AND WOLFGANG WEFELMEYER Instead of comparing distribution functions, we can

  15. Microwaving of normally opaque and semi-opaque substances

    DOE Patents [OSTI]

    Sheinberg, H.; Meek, T.T.; Blake, R.D.

    1990-07-17

    Disclosed is a method of heating small particles using microwave radiation which are not normally capable of being heated by microwaves. The surfaces of the particles are coated with a material which is transparent to microwave radiation in order to cause microwave coupling to the particles and thus accomplish heating of the particles.

  16. Deep Borehole Disposal Remediation Costs for Off-Normal Outcomes

    SciTech Connect (OSTI)

    Finger, John T.; Cochran, John R.; Hardin, Ernest

    2015-08-17

    This memo describes rough-order-of-magnitude (ROM) cost estimates for a set of off-normal (accident) scenarios, as defined for two waste package emplacement method options for deep borehole disposal: drill-string and wireline. It summarizes the different scenarios and the assumptions made for each, with respect to fishing, decontamination, remediation, etc.

  17. Multi-year SeaSonal Sex-allocation PatternS in red-winged BlackBirdS (AgelAius phoeniceus)

    E-Print Network [OSTI]

    Weatherhead, Patrick J.

    Multi-year SeaSonal Sex-allocation PatternS in red-winged BlackBirdS (AgelAius phoeniceus) Patrick had been proposed. Instead, seasonal sex-allocation patterns interacted with season length. Early late in the season and those earlier (early plus midseason) was a strong function of season length

  18. Assessing seasonal greenhouse gas emissions and belowground C anAssessing seasonal greenhouse gas emissions and belowground C and N processes under different fired N processes under different fire frequencies in soils of Sierra Nevada chaparral shrublands

    E-Print Network [OSTI]

    Norton, Jay B.

    Assessing seasonal greenhouse gas emissions and belowground C anAssessing seasonal greenhouse gas of greenhouse gases (GHG) to the atmosphere is lacking. ·Historically, fire played a critical role in shaping

  19. Seasonal Evolution of Saturn's Polar Temperatures and Composition

    E-Print Network [OSTI]

    Fletcher, Leigh N; Sinclair, J A; Orton, G S; Giles, R S; Hurley, J; Gorius, N; Achterberg, R K; Hesman, B E; Bjoraker, G L

    2014-01-01

    The seasonal evolution of Saturn's polar atmospheric temperatures and hydrocarbon composition is derived from a decade of Cassini Composite Infrared Spectrometer (CIRS) 7-16 $\\mu$m thermal infrared spectroscopy. We construct a near-continuous record of atmospheric variability poleward of 60$^\\circ$ from northern winter/southern summer (2004, $L_s=293^\\circ$) through the equinox (2009, $L_s=0^\\circ$) to northern spring/southern autumn (2014, $L_s=56^\\circ$). The hot tropospheric polar cyclones and the hexagonal shape of the north polar belt are both persistent features throughout the decade of observations. The hexagon vertices rotated westward by $\\approx30^\\circ$ longitude between March 2007 and April 2013, confirming that they are not stationary in the Voyager-defined System III longitude system as previously thought. The extended region of south polar stratospheric emission has cooled dramatically poleward of the sharp temperature gradient near 75$^\\circ$S, coinciding with a depletion in the abundances of ...

  20. Influence of hydrological seasonality on sandbank benthos: algal biomass and shrimp abundance in a large neotropical river 

    E-Print Network [OSTI]

    Montoya Ceballos, Jose Vicente

    2009-05-15

    In this study, I examined the influence of hydrological seasonality on spatiotemporal variation of algal biomass and shrimp abundance on sandbanks of the Cinaruco River in southwestern Venezuela. Seasonal variations of ...

  1. A comparison of normal and worst case cement plant emissions

    SciTech Connect (OSTI)

    Woodford, J.; Gossman, D.; Johnson, N.

    1996-12-31

    Lone Star Industries, Inc. in Cape Girardeau, Missouri conducted a trial burn in October, 1995. Two metals emissions test days were conducted. One of the test days was a worst case metals spiking day and one of the test days was a normal emissions day. This paper examines and compares the emissions from these two test days. Much has been made of metals emissions from hazardous waste burning cement kilns, but for the most part, this has been due to the worst case metals emissions data that became available from the 1992 BIF compliance testing performed and reported by 24 cement plants. By comparison, very little data exists on normal cement kiln emissions. This paper provides one comparison.

  2. High Power Tests of Normal Conducting Single-Cell Structures

    SciTech Connect (OSTI)

    Dolgashev, V.A.; Tantawi, S.G.; Nantista, C.D.; /SLAC; Higashi, Y.; Higo, T.; /KEK, Tsukuba

    2007-11-07

    We report the results of the first high power tests of single-cell traveling-wave and standing-wave structures. These tests are part of an experimental and theoretical study of rf breakdown in normal conducting structures at 11.4 GHz. The goal of this study is to determine the gradient potential of normal-conducting rf-powered particle beam accelerators. The test setup consists of reusable mode converters and short test structures and is powered by SLAC's XL-4 klystron. This setup was created for economical testing of different cell geometries, cell materials and preparation techniques with short turn-around time. The mode launchers and structures were manufactured at SLAC and KEK and tested in the SLAC Klystron Test Lab.

  3. Procedure for normalization of cDNA libraries

    DOE Patents [OSTI]

    Bonaldo, Maria DeFatima (New York, NY); Soares, Marcelo Bento (New York, NY)

    1997-01-01

    This invention provides a method to normalize a cDNA library constructed in a vector capable of being converted to single-stranded circles and capable of producing complementary nucleic acid molecules to the single-stranded circles comprising: (a) converting the cDNA library in single-stranded circles; (b) generating complementary nucleic acid molecules to the single-stranded circles; (c) hybridizing the single-stranded circles converted in step (a) with complementary nucleic acid molecules of step (b) to produce partial duplexes to an appropriate Cot; (e) separating the unhybridized single-stranded circles from the hybridized single-stranded circles, thereby generating a normalized cDNA library.

  4. Procedure for normalization of cDNA libraries

    DOE Patents [OSTI]

    Bonaldo, M.D.; Soares, M.B.

    1997-12-30

    This invention provides a method to normalize a cDNA library constructed in a vector capable of being converted to single-stranded circles and capable of producing complementary nucleic acid molecules to the single-stranded circles comprising: (a) converting the cDNA library in single-stranded circles; (b) generating complementary nucleic acid molecules to the single-stranded circles; (c) hybridizing the single-stranded circles converted in step (a) with complementary nucleic acid molecules of step (b) to produce partial duplexes to an appropriate Cot; (e) separating the unhybridized single-stranded circles from the hybridized single-stranded circles, thereby generating a normalized cDNA library. 1 fig.

  5. De-coupling seasonal changes in water content and dry matter to predict live conifer foliar moisture content

    E-Print Network [OSTI]

    De-coupling seasonal changes in water content and dry matter to predict live conifer foliar growing seasons and quantified their LFMC, relative water content (RWC) and dry matter chemistry. LFMC a stronger control on seasonal LFMC dynamics than actual changes in water content, and they challenge

  6. Surface Tension between Kaon Condensate and Normal Nuclear Matter Phase

    E-Print Network [OSTI]

    Michael B. Christiansen; Norman K. Glendenning; Jurgen Schaffner-Bielich

    2000-03-20

    We calculate for the first time the surface tension and curvature coefficient of a first order phase transition between two possible phases of cold nuclear matter, a normal nuclear matter phase in equilibrium with a kaon condensed phase, at densities a few times the saturation density. We find the surface tension is proportional to the difference in energy density between the two phases squared. Furthermore, we show the consequences for the geometrical structures of the mixed phase region in a neutron star.

  7. Qualitative properties of optimal portfolios in log-normal markets

    E-Print Network [OSTI]

    Zariphopoulou, Thaleia

    ), t (stock allocation) · Value of allocation Xt = 0 t + t dXt = t( dt + dWt) ; = 4 #12;Value function-normal markets (with S. Kallblad) · Completely monotone functions and marginal utilities (with S. Kallblad securities dSt = St dt + St dWt , S0 > 0 dBt = 0 , B0 = 1 · Self-financing strategies 0 t (bond allocation

  8. Universal spectral correlations in ensembles of random normal matrices

    E-Print Network [OSTI]

    Ravi Prakash; Akhilesh Pandey

    2014-12-20

    We consider non-gaussian ensembles of random normal matrices with the constraint that the ensembles are invariant under unitary transformations. We show that the level density of eigenvalues exhibits disk to ring transition in the complex plane. We also show that the n-eigenvalue correlation and the spacing distribution are universal and identical to that of complex (Gaussian) Ginibre ensemble. Our results are confirmed by Monte Carlo calculations. We verify the universality for dissipative quantum kicked rotor system.

  9. Implications of the variable availability of seasonal foods on the home ranges of black bears, Ursus americanus, in the Sierra Nevada of California

    E-Print Network [OSTI]

    Mazur, Rachel; Klimley, A P; Folger, Karen

    2013-01-01

    Implications of the variable availability of seasonal foodsImplications of the variable availability of seasonal foodsexamine how a change in availability of seed and acorn crops

  10. Impacts of precipitation seasonality and ecosystem types on evapotranspiration in the Yukon River Basin, Alaska

    E-Print Network [OSTI]

    Yuan, Wenping; Liu, Shuguang; Liu, Heping; Randerson, James T; Yu, Guirui; Tieszen, Larry L

    2010-01-01

    physical properties alter water and energy fluxes of an oak-The model simulates the energy, water, carbon, and momentumSeasonal variation of energy and water vapor exchange rates

  11. Dynamic retail assortment models with demand learning for seasonal consumer goods

    E-Print Network [OSTI]

    Caro, Felipe

    2005-01-01

    The main research question we explore in this dissertation is: How should a retailer modify its product assortment over time in order to maximize overall profits for a given selling season? Historically, long development, ...

  12. Bedding and Seasonal Effects on Chemical and Bacterial Properties of Feedlot Cattle Manure

    E-Print Network [OSTI]

    Selinger, Brent

    cattle (Bos wood-chip bedding in their operations. Wood chips gen-taurus) feedlot in southern Alberta whereas season affected all four groups. Num- in straw and wood-chip bedding suggest there is a poten

  13. Design and evaluation of seasonal storage hydrogen peak electricity supply system

    E-Print Network [OSTI]

    Oloyede, Isaiah Olanrewaju

    2011-01-01

    The seasonal storage hydrogen peak electricity supply system (SSHPESS) is a gigawatt-year hydrogen storage system which stores excess electricity produced as hydrogen during off-peak periods and consumes the stored hydrogen ...

  14. Role of the seasonally-oscillating Hadley Cell in interhemispheric mixing 

    E-Print Network [OSTI]

    Cohen, Peter J.

    1996-01-01

    The contribution of the seasonally-oscillating Hadley cell to the interhemispheric mixing of trace chemical species is studied using a zonally-symmetric kinematic model of the Hadley cell flow based upon the first steady-state ...

  15. Study of Applications of Solar Heating Systems with Seasonal Storage in China 

    E-Print Network [OSTI]

    Yu, G.; Zhao, X.; Chen, P.

    2006-01-01

    In most northern parts of China, it is cold in winter and needs space heating in winter. This paper studies applications of solar heating systems with seasonal storage in China. A typical residential district was selected, ...

  16. Seasonal variations of high-latitude field-aligned currents inferred from rsted and Magsat observations

    E-Print Network [OSTI]

    Michigan, University of

    equinox. The decrease in the size of the summer polar cap is caused by a shift of both daytime the pairs of downward/upward currents for all seasons as well as between hemispheres during equinox. We were

  17. Seasonal variation of upper-level mobile trough development upstream of the Pacific storm track 

    E-Print Network [OSTI]

    Myoung, Boksoon

    2002-01-01

    The purpose of this thesis is to investigate seasonal and interannual statistics of troughs associated with the Pacific storm track and quantify the influence of deformation on trough development upstream of the western ...

  18. Inventory optimization model for NIKE's long lifecycle highly seasonal replenishment products

    E-Print Network [OSTI]

    Kang, John H. (John Hyun-June)

    2015-01-01

    Currently, demand and inventory planners at NIKE Always Available (NIKE's replenishment business) experience difficulty in managing long-lifecycle highly-seasonal products like soccer equipment and fleece apparel. Very ...

  19. Timing and duration of European larch growing season along altitudinal gradients in the Swiss Alps

    E-Print Network [OSTI]

    Esper, Jan

    and matura- tion of the stem wood. Needles appeared ~3­4 weeks earlier than stem growth. The duration of ring growth throughout the entire growing season. Exceptions include a limited number of stud- ies that showed

  20. Citrus limonoids: seasonal changes and their potential in glutathione S-transferase induction 

    E-Print Network [OSTI]

    Li, Jiaxing

    2002-01-01

    Seasonal changes of citrus limonids in 'Rio Red' grapefruit were investigated using reverse phase high performance liquid chromatography (HPLC). Several citrus limonoids, limonoid mixtures and a flavonone were evaluated for their ability to induce...

  1. Potato Late blight Update and Late Season Recommendations Willie Kirk. PLP

    E-Print Network [OSTI]

    Douches, David S.

    Potato Late blight Update and Late Season Recommendations Willie Kirk. PLP Potato late blight has this year. Growers should sample symptomatic tubers and send them for diagnosis to the Kirk lab

  2. Improving Groundwater Predictions Utilizing Seasonal Precipitation Forecasts from General Circulation Models

    E-Print Network [OSTI]

    Arumugam, Sankar

    Improving Groundwater Predictions Utilizing Seasonal Precipitation Forecasts from General. The research reported in this paper evaluates the potential in developing 6-month-ahead groundwater Surface Temperature forecasts. Ten groundwater wells and nine streamgauges from the USGS Groundwater

  3. Food webs of two Venezuelan clear-water streams with seasonal fluctuations in hydrology 

    E-Print Network [OSTI]

    Peterson, Christopher Chase

    1997-01-01

    Two Venezuelan clear-water streams were sampled to describe resource use by fishes, community interactions, and the effects of seasonal environmental change and resource availability on food web structure. Previous studies ...

  4. The role of seasonal wetlands in the ecology of the American alligator 

    E-Print Network [OSTI]

    Subalusky, Amanda Lee

    2009-05-15

    populations to determine the most effective method of studying alligators in seasonal wetlands. I then used systematic trapping, nest surveys and radio telemetry to determine habitat use and overland movement rates by different sex and size classes. I found...

  5. Supporting Online Material for: Carbon in Amazon forests: Unexpected seasonal fluxes and disturbance-

    E-Print Network [OSTI]

    seasonal variations in important climatic variables at this site: solar radiation, net radiation, air; measurements at Km 83 after that date are not included here, since we focus on the dynamics of primary forests

  6. Seasonal patterns of forest canopy and their relevance for the global carbon cycle 

    E-Print Network [OSTI]

    Mizunuma, Toshie

    2015-06-30

    In the terrestrial biosphere forests have a significant role as a carbon sink. Under recent climate change, it is increasingly important to detect seasonal change or ‘phenology’ that can influence the global carbon cycle. ...

  7. Nonlinear equilibration of baroclinic eddies : the role of boundary layer processes and seasonal forcing

    E-Print Network [OSTI]

    Zhang, Yang, Ph. D. Massachusetts Institute of Technology

    2009-01-01

    In this thesis, the influence of boundary layer processes and seasonal forcing on baroclinic eddy equilibration is studied to understand how the baroclinic adjustment is modified when taking into account these two factors. ...

  8. Climate effects of seasonally varying Biomass Burning emitted Carbonaceous Aerosols (BBCA)

    E-Print Network [OSTI]

    Jeong, Gill-Ran

    The climate impact of the seasonality of Biomass Burning emitted Carbonaceous Aerosols (BBCA) is studied using an aerosol-climate model coupled with a slab ocean model in a set of 60-year long simulations, driven by BBCA ...

  9. Agricultural green revolution as a driver of increasing atmospheric CO2 seasonal amplitude

    SciTech Connect (OSTI)

    Zeng, Ning; Zhao, Fang; Collatz, George; Kalnay, Eugenia; Salawitch, Ross J.; West, Tristram O.; Guanter, Luis

    2014-11-20

    The atmospheric carbon dioxide (CO2) record displays a prominent seasonal cycle that arises mainly from changes in vegetation growth and the corresponding CO2 uptake during the boreal spring and summer growing seasons and CO2 release during the autumn and winter seasons. The CO2 seasonal amplitude has increased over the past five decades, suggesting an increase in Northern Hemisphere biospheric activity. It has been proposed that vegetation growth may have been stimulated by higher concentrations of CO2 as well as by warming in recent decades, but such mechanisms have been unable to explain the full range and magnitude of the observed increase in CO2 seasonal amplitude. Here we suggest that the intensification of agriculture (the Green Revolution, in which much greater crop yield per unit area was achieved by hybridization, irrigation and fertilization) during the past five decades is a driver of changes in the seasonal characteristics of the global carbon cycle. Our analysis of CO2 data and atmospheric inversions shows a robust 15 per cent long-term increase in CO2 seasonal amplitude from 1961 to 2010, punctuated by large decadal and interannual variations. Using a terrestrial carbon cycle model that takes into account high-yield cultivars, fertilizer use and irrigation, we find that the long-term increase in CO2 seasonal amplitude arises from two major regions: the mid-latitude cropland between 256N and 606N and the high-latitude natural vegetation between 506N and 706 N. The long-term trend of seasonal amplitude increase is 0.311 ± 0.027 percent per year, of which sensitivity experiments attribute 45, 29 and 26 per cent to land-use change, climate variability and change, and increased productivity due to CO2 fertilization, respectively. Vegetation growth was earlier by one to two weeks, as measured by the mid-point of vegetation carbon uptake, and took up 0.5 petagrams more carbon in July, the height of the growing season, during 2001–2010 than in 1961–1970, suggesting that human land use and management contribute to seasonal changes in the CO2 exchange between the biosphere and the atmosphere.

  10. BEMS-Assisted Seasonal Functional Performance Testing in the Initial Commissioning of Kista Entre and Katsan 

    E-Print Network [OSTI]

    Isakson, P.; Wetterstrom, P.; Carling, P.

    2004-01-01

    detect and diagnose energy and other performance problems with building operations [1]. However, in Sweden the assessment of seasonal performance in commissioning typically uses trend-data from only a few days. Our hypothesis is that monitoring...-ASSISTED SEASONAL FUNCTIONAL PERFORMANCE TESTING IN THE INITIAL COMMISSIONING OF KISTA ENTRÉ AND KATSAN Per Isakson*, Per Wetterström** and Pär Carling*** * Building Sciences KTH, Stockholm SWEDEN. per.isakson@byv.kth.se ** Vasakronan, Stockholm, SWEDEN...

  11. Anthropogenic emissions of nonmethane hydrocarbons in the northeastern United States: Measured seasonal variations from

    E-Print Network [OSTI]

    Goldstein, Allen

    in relative emissions for this series of trace gases. Seasonal changes in n-butane and i-butane emissions may [Seinfeld and Pandis, 1998]. [3] In this study, we present the seasonality of C2-C6 (ethane, propane, n-butane, i-butane, n-pentane, i-pentane and n-hexane) hydrocarbons, NOy and CO as measured at Harvard Forest

  12. Experiments with a time-dependent, zonally averaged, seasonal, enery balance climatic model 

    E-Print Network [OSTI]

    Thompson, Starley Lee

    1977-01-01

    EXPERIMENTS WITH A TI&E-DEPENDENT, ZONALLY AVERAGED, SEASONAL, ENERGY BALANCE CLIMATIC MODEL A Thesis by STARLEY LEE THOMPSON Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the decree... of MASTER OF SCIENCE December 1977 Major Subject: Meteorology EXPERIMENTS WITH A TIME DEPENDENT~ ZONALLY AVERAGED~ SEASONAL, ENERGY BALANCE CLIMATIC MODEL A Thesis by STARLEY LEE THOMPSON Approved as to style and content by: (Chairman of Committee...

  13. Overview Normal Observations Two-Sample Proportions Extensions on the Likelihood Ratio

    E-Print Network [OSTI]

    Watkins, Joseph C.

    Overview Normal Observations Two-Sample Proportions Topic 19 Extensions on the Likelihood Ratio Two-Sided Tests 1 / 12 #12;Overview Normal Observations Two-Sample Proportions Outline Overview Normal Observations Two-Sample Proportions Power Analysis 2 / 12 #12;Overview Normal Observations Two

  14. Energy Spectrum of Superfluid Turbulence without Normal Fluid

    E-Print Network [OSTI]

    Tsunehiko Araki; Makoto Tsubota; Sergey K. Nemirovskii

    2002-09-03

    The energy spectrum of the superfluid turbulence without the normal fluid is studied numerically under the vortex filament model. Time evolution of the Taylor-Green vortex is calculated under the full nonlocal Biot-Savart law. It is shown that for kenergy spectrum is very similar to the Kolmogorov's -5/3 law which is the most important statistical property of the conventional turbulence, where k is the wave number of the Fourier component of the velocity field and 1 the average intervortex spacing. The vortex length distribution becomes to obey a scaling property reflecting the self-similarity of the tangle.

  15. Quasi-normal acoustic oscillations in the transonic Bondi flow

    E-Print Network [OSTI]

    Eliana Chaverra; Olivier Sarbach

    2015-09-17

    In recent work, we analyzed the dynamics of spherical and nonspherical acoustic perturbations of the Michel flow, describing the steady radial accretion of a relativistic perfect fluid into a nonrotating black hole. We showed that such perturbations undergo quasi-normal oscillations and computed the corresponding complex frequencies as a function of the black hole mass M and the radius r_c of the sonic horizon. It was found that when r_c is much larger than the Schwarzschild radius r_H = 2GM/c^2 of the black hole, these frequencies scale like the surface gravity of the analogue black hole associated with the acoustic metric. In this work, we analyze the Newtonian limit of the Michel solution and its acoustic perturbations. In this limit, the flow outside the sonic horizon reduces to the transonic Bondi flow, and the acoustic metric reduces to the one introduced by Unruh in the context of experimental black hole evaporation. We show that for the transonic Bondi flow, Unruh's acoustic metric describes an analogue black hole and compute the associated quasi-normal frequencies. We prove that they do indeed scale like the surface gravity of the acoustic black hole, thus providing an explanation for our previous results in the relativistic setting.

  16. Quasi-normal acoustic oscillations in the Michel flow

    E-Print Network [OSTI]

    Eliana Chaverra; Manuel D. Morales; Olivier Sarbach

    2015-06-09

    We study spherical and nonspherical linear acoustic perturbations of the Michel flow, which describes the steady radial accretion of a perfect fluid into a nonrotating black hole. The dynamics of such perturbations are governed by a scalar wave equation on an effective curved background geometry determined by the acoustic metric, which is constructed from the spacetime metric and the particle density and four-velocity of the fluid. For the problem under consideration in this article the acoustic metric has the same qualitative features as an asymptotically flat, static and spherically symmetric black hole, and thus it represents a natural astrophysical analogue black hole. As for the case of a scalar field propagating on a Schwarzschild background, we show that acoustic perturbations of the Michel flow exhibit quasi-normal oscillations. Based on a new numerical method for determining the solutions of the radial mode equation, we compute the associated frequencies and analyze their dependency on the radii of the event and sonic horizons and the angular momentum number. Our results for the fundamental frequencies are compared to those obtained from an independent numerical Cauchy evolution, finding good agreement between the two approaches. When the radius of the sonic horizon is large compared to the event horizon radius, we find that the quasi-normal frequencies scale approximately like the surface gravity associated with the sonic horizon.

  17. A normal metal tunnel-junction heat diode

    SciTech Connect (OSTI)

    Fornieri, Antonio, E-mail: antonio.fornieri@sns.it; Martínez-Pérez, María José; Giazotto, Francesco, E-mail: giazotto@sns.it [NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, I-56127 Pisa (Italy)

    2014-05-05

    We propose a low-temperature thermal rectifier consisting of a chain of three tunnel-coupled normal metal electrodes. We show that a large heat rectification is achievable if the thermal symmetry of the structure is broken and the central island can release energy to the phonon bath. The performance of the device is theoretically analyzed and, under the appropriate conditions, temperature differences up to ?200 mK between the forward and reverse thermal bias configurations are obtained below 1?K, corresponding to a rectification ratio R?2000. The simplicity intrinsic to its design joined with the insensitivity to magnetic fields make our device potentially attractive as a fundamental building block in solid-state thermal nanocircuits and in general-purpose cryogenic electronic applications requiring energy management.

  18. Quasi-normal acoustic oscillations in the Michel flow

    E-Print Network [OSTI]

    Chaverra, Eliana; Sarbach, Olivier

    2015-01-01

    We study spherical and nonspherical linear acoustic perturbations of the Michel flow, which describes the steady radial accretion of a perfect fluid into a nonrotating black hole. The dynamics of such perturbations are governed by a scalar wave equation on an effective curved background geometry determined by the acoustic metric, which is constructed from the spacetime metric and the particle density and four-velocity of the fluid. For the problem under consideration in this article the acoustic metric has the same qualitative features as an asymptotically flat, static and spherically symmetric black hole, and thus it represents a natural astrophysical analogue black hole. As for the case of a scalar field propagating on a Schwarzschild background, we show that acoustic perturbations of the Michel flow exhibit quasi-normal oscillations. Based on a new numerical method for determining the solutions of the radial mode equation, we compute the associated frequencies and analyze their dependency on the radii of t...

  19. Normal Conducting Deflecting Cavity Development at the Cockcroft Institute

    E-Print Network [OSTI]

    Burt, G; Dexter, A C; Woolley, B; Jones, R M; Grudiev, A; Dolgashev, V; Wheelhouse, A; Mackenzie, J; McIntosh, P A; Hill, C; Goudket, P; Buckley, S; Lingwood, C

    2013-01-01

    Two normal conducting deflecting structures are currently being developed at the Cockcroft Institute, one as a crab cavity for CERN linear collider CLIC and one for bunch slice diagnostics on low energy electron beams for Electron Beam Test Facility EBTF at Daresbury. Each has its own challenges that need overcome. For CLIC the phase and amplitude tolerances are very stringent and hence beamloading effects and wakefields must be minimised. Significant work has been undertook to understand the effect of the couplers on beamloading and the effect of the couplers on the wakefields. For EBTF the difficulty is avoiding the large beam offset caused by the cavities internal deflecting voltage at the low beam energy. Prototypes for both cavities have been manufactured and results will be presented.

  20. Galaxy rotation curves with log-normal density distribution

    E-Print Network [OSTI]

    Marr, John H

    2015-01-01

    The log-normal distribution represents the probability of finding randomly distributed particles in a micro canonical ensemble with high entropy. To a first approximation, a modified form of this distribution with a truncated termination may represent an isolated galactic disk, and this disk density distribution model was therefore run to give the best fit to the observational rotation curves for 37 representative galaxies. The resultant curves closely matched the observational data for a wide range of velocity profiles and galaxy types with rising, flat or descending curves in agreement with Verheijen's classification of 'R', 'F' and 'D' type curves, and the corresponding theoretical total disk masses could be fitted to a baryonic Tully Fisher relation (bTFR). Nine of the galaxies were matched to galaxies with previously published masses, suggesting a mean excess dynamic disk mass of dex0.61+/-0.26 over the baryonic masses. Although questionable with regard to other measurements of the shape of disk galaxy g...

  1. Semi-analytic results for quasi-normal frequencies

    E-Print Network [OSTI]

    Skakala, Jozef

    2010-01-01

    The last decade has seen considerable interest in the quasi-normal frequencies [QNFs] of black holes (and even wormholes), both asymptotically flat and with cosmological horizons. There is wide agreement that the QNFs are often of the form omega_n = (offset) + i n (gap), though some authors have encountered situations where this behaviour seems to fail. To get a better understanding of the general situation we consider a semi-analytic model based on a piecewise Eckart (Poeschl--Teller) potential, allowing for different heights and different rates of exponential falloff in the two asymptotic directions. This model is sufficiently general to capture and display key features of the black hole QNFs while simultaneously being analytically tractable, at least for asymptotically large imaginary parts of the QNFs. We shall derive an appropriate "quantization condition" for the asymptotic QNFs, and extract as much analytic information as possible. In particular, we shall explicitly verify that the (offset)+ i n (gap) ...

  2. Generic master equations for quasi-normal frequencies

    E-Print Network [OSTI]

    Skakala, Jozef

    2010-01-01

    Generic master equations governing the highly-damped quasi-normal frequencies [QNFs] of one-horizon, two-horizon, and even three-horizon spacetimes can be obtained through either semi-analytic or monodromy techniques. While many technical details differ, both between the semi-analytic and monodromy approaches, and quite often among various authors seeking to apply the monodromy technique, there is nevertheless widespread agreement regarding the the general form of the QNF master equations. Within this class of generic master equations we can establish some rather general results, relating the existence of "families" of QNFs of the form omega_{a,n} = (offset)_a + i n (gap) to the question of whether or not certain ratios of parameters are rational or irrational.

  3. Mineral density volume gradients in normal and diseased human tissues

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Djomehri, Sabra I.; Candell, Susan; Case, Thomas; Browning, Alyssa; Marshall, Grayson W.; Yun, Wenbing; Lau, S. H.; Webb, Samuel; Ho, Sunita P.; Aikawa, Elena

    2015-04-09

    Clinical computed tomography provides a single mineral density (MD) value for heterogeneous calcified tissues containing early and late stage pathologic formations. The novel aspect of this study is that, it extends current quantitative methods of mapping mineral density gradients to three dimensions, discretizes early and late mineralized stages, identifies elemental distribution in discretized volumes, and correlates measured MD with respective calcium (Ca) to phosphorus (P) and Ca to zinc (Zn) elemental ratios. To accomplish this, MD variations identified using polychromatic radiation from a high resolution micro-computed tomography (micro-CT) benchtop unit were correlated with elemental mapping obtained from a microprobe X-raymore »fluorescence (XRF) using synchrotron monochromatic radiation. Digital segmentation of tomograms from normal and diseased tissues (N=5 per group; 40-60 year old males) contained significant mineral density variations (enamel: 2820-3095mg/cc, bone: 570-1415mg/cc, cementum: 1240-1340mg/cc, dentin: 1480-1590mg/cc, cementum affected by periodontitis: 1100-1220mg/cc, hypomineralized carious dentin: 345-1450mg/cc, hypermineralized carious dentin: 1815-2740mg/cc, and dental calculus: 1290-1770mg/cc). A plausible linear correlation between segmented MD volumes and elemental ratios within these volumes was established, and Ca/P ratios for dentin (1.49), hypomineralized dentin (0.32-0.46), cementum (1.51), and bone (1.68) were observed. Furthermore, varying Ca/Zn ratios were distinguished in adapted compared to normal tissues, such as in bone (855-2765) and in cementum (595-990), highlighting Zn as an influential element in prompting observed adaptive properties. Hence, results provide insights on mineral density gradients with elemental concentrations and elemental footprints that in turn could aid in elucidating mechanistic processes for pathologic formations.« less

  4. Crossover from anomalous to normal diffusion in porous media

    E-Print Network [OSTI]

    F. D. A. Aarao Reis; Dung di Caprio

    2015-06-16

    Random walks (RW) of particles adsorbed in the internal walls of porous deposits produced by ballistic-type growth models are studied. The particles start at the external surface of the deposits and enter their pores, in order to simulate an external flux of a species towards a porous solid. For short times, the walker concentration decays as a stretched exponential of the depth z, but a crossover to long time normal diffusion is observed in most samples. The anomalous concentration profile remains at long times in very porous solids if the walker steps are restricted to nearest neighbors and is accompanied with subdiffusion features. These findings are correlated with a decay of the explored area with z. The study of RW of tracer particles left at the internal part of the solid rules out an interpretation by diffusion equations with position-dependent coefficients. A model of RW in a tube of decreasing cross section explains those results by showing long crossovers from an effective subdiffusion regime to an asymptotic normal diffusion. The crossover position and density are analytically calculated for a tube with area decreasing exponentially with z and show good agreement with numerical data. The anomalous decay of the concentration profile is interpreted as a templating effect of the tube shape on the total number of diffusing particles at each depth, while the volumetric concentration in the actually explored porous region may not have significant decay. These results may explain the anomalous diffusion of metal atoms in porous deposits observed in recent works. They also confirm the difficulty in interpreting experimental or computational data on anomalous transport reported in recent works, particularly if only the concentration profiles are measured.

  5. Insolation data manual and direct normal solar radiation data manual

    SciTech Connect (OSTI)

    none,

    1990-07-01

    The Insolation Data Manual presents monthly averaged data which describes the availability of solar radiation at 248 National Weather Service (NWS) stations, principally in the United States. Monthly and annual average daily insolation and temperature values have been computed from a base of 24--25 years of data, generally from 1952--1975, and listed for each location. Insolation values represent monthly average daily totals of global radiation on a horizontal surface and are depicted using the three units of measurement: kJ/m{sup 2} per day, Btu/ft{sup 2} per day and langleys per day. Average daily maximum, minimum and monthly temperatures are provided for most locations in both Celsius and Fahrenheit. Heating and cooling degree-days were computed relative to a base of 18.3 C (65 F). For each station, global {bar K}{sub T} (cloudiness index) values were calculated on a monthly and annual basis. Global {bar K}{sub T} is an index of cloudiness and indicates fractional transmittance of horizontal radiation, from the top of the atmosphere to the earth's surface. The second section of this volume presents long-term monthly and annual averages of direct normal solar radiation for 235 NWS stations, including a discussion of the basic derivation process. This effort is in response to a generally recognized need for reliable direct normal data and the recent availability of 23 years of hourly averages for 235 stations. The relative inaccessibility of these data on microfiche further justifies reproducing at least the long-term averages in a useful format. In addition to a definition of terms and an overview of the ADIPA model, a discussion of model validation results is presented.

  6. Photoperiodic Regulation of the Seasonal Pattern of Photosynthetic Capacity and the Implications for Carbon Cycling

    SciTech Connect (OSTI)

    Bauerle, William L. [Colorado State University, Fort Collins; Oren, Ram [Duke University; Way, Danielle A. [Duke University; Qian, Song S. [Duke University; Stoy, Paul C. [Montana State University; Thornton, Peter E [ORNL; Bowden, Joseph D. [Colorado State University, Fort Collins; Hoffman, Forrest M [ORNL; Reynolds, Robert F. [Clemson University

    2012-01-01

    Although temperature is an important driver of seasonal changes in photosynthetic physiology, photoperiod also regulates leaf activity. Climate change will extend growing seasons if temperature cues predominate, but photoperiod-controlled species will show limited responsiveness to warming. We show that photoperiod explains more seasonal variation in photosynthetic activity across 23 tree species than temperature. Although leaves remain green, photosynthetic capacity peaks just after summer solstice and declines with decreasing photoperiod, before air temperatures peak. In support of these findings, saplings grown at constant temperature but exposed to an extended photoperiod maintained high photosynthetic capacity, but photosynthetic activity declined in saplings experiencing a naturally shortening photoperiod; leaves remained equally green in both treatments. Incorporating a photoperiodic correction of photosynthetic physiology into a global-scale terrestrial carbon-cycle model significantly improves predictions of seasonal atmospheric CO{sub 2} cycling, demonstrating the benefit of such a function in coupled climate system models. Accounting for photoperiod-induced seasonality in photosynthetic parameters reduces modeled global gross primary production 2.5% ({approx}4 PgC y{sup -1}), resulting in a >3% ({approx}2 PgC y{sup -1}) decrease of net primary production. Such a correction is also needed in models estimating current carbon uptake based on remotely sensed greenness. Photoperiod-associated declines in photosynthetic capacity could limit autumn carbon gain in forests, even if warming delays leaf senescence.

  7. Seasonal thermal energy storage program. Progress report, January 1980-December 1980

    SciTech Connect (OSTI)

    Minor, J.E.

    1981-05-01

    The objectives of the Seasonal Thermal Energy Storage (STES) Program is to demonstrate the economic storage and retrieval of energy on a seasonal basis, using heat or cold available from waste sources or other sources during a surplus period to reduce peak period demand, reduce electric utilities peaking problems, and contribute to the establishment of favorable economics for district heating and cooling systems for commercialization of the technology. Aquifers, ponds, earth, and lakes have potential for seasonal storage. The initial thrust of the STES Program is toward utilization of ground-water systems (aquifers) for thermal energy storage. Program plans for meeting these objectives, the development of demonstration programs, and progress in assessing the technical, economic, legal, and environmental impacts of thermal energy storage are described. (LCL)

  8. Factor Analysis for Skewed Data and Skew-Normal Maximum Likelihood Factor Analysis 

    E-Print Network [OSTI]

    Gaucher, Beverly Jane

    2013-04-04

    This research explores factor analysis applied to data from skewed distributions for the general skew model, the selection-elliptical model, the selection-normal model, the skew-elliptical model and the skew-normal model ...

  9. Normal form approach for dispersive equations with low-regularity data

    E-Print Network [OSTI]

    Oh, Seungly

    2012-01-01

    In this dissertation, we examine applications of the normal form technique to nonlinear dispersive equations with rough initial data. Working within the framework of Bourgain spaces, the normal form method often produces ...

  10. Interactive crop management in the Community Earth System Model (CESM1): Seasonal influences on land-atmosphere fluxes

    E-Print Network [OSTI]

    Levis, S.

    2014-01-01

    will likely improve earth system model simulations withABSTRACT The Community Earth System Model, version 1 (CESM1)in the Community Earth System Model (CESM1): Seasonal

  11. Intercomparison of the seasonal cycle in 200 hPa kinetic energy in AMIP GCM simulations

    SciTech Connect (OSTI)

    Boyle, J.S.

    1996-10-01

    The 200 hPa kinetic energy is represented by means of the spherical harmonic components for the Atmospheric Model Intercomparison Project (AMIP) simulations, the National Center for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) reanalysis and the European Centre for Medium Range Weather Forecast Reanalysis (ERA). The data used are the monthly mean wind fields from 1979 to 1988. The kinetic energy is decomposed into the divergent (DKE) and rotational (RKE) components and emphasis is placed on examining the former. The two reanalysis data sets show reasonable agreement that is best for the rotational kinetic energy. The largest difference in the divergent kinetic energy occurs during the northern summer. As might be expected, the two analyses are closet in regions where there are sufficient observations such that the effect of the model used in the assimilation cycle are minimized. The observed RKE show only a slight seasonal cycle with a maximum occuring during the northern winter. The DKE, on the other hand, has a very pronounced seasonal cycle with maxima at the solsticial seasons and minima during the equinoctial seasons. The model results show a very large spread in the magnitudes of the RKE and DKE although the models all evince a seasonal variation in phase with that observed. The median values of the seasonal cycle of RKE and DKE for the models are usually superior to those of any individual model. Results are also presented for simulation following the AMIP protocol but using updated versions of the original AMIP entries. In most cases these new integrations show better agreement with the observations.

  12. TRENDS IN DIRECT NORMAL SOLAR IRRADIANCE IN OREGON FROM 1979-2003 Laura Riihimaki

    E-Print Network [OSTI]

    Oregon, University of

    TRENDS IN DIRECT NORMAL SOLAR IRRADIANCE IN OREGON FROM 1979-2003 Laura Riihimaki Frank Vignola of trends in direct normal irradiance from three sites around Oregon over a period of 25 years. An overall. This article studies the trends in direct normal beam irradiance at three locations in Oregon. These sites have

  13. Modeling and Generating Daily Changes in Market Variables Using A Multivariate Mixture of Normal Distributions

    E-Print Network [OSTI]

    Wang, Jin

    Modeling and Generating Daily Changes in Market Variables Using A Multivariate Mixture of Normal of the normal distribution for modeling of daily changes in market variables with fatter-than-normal tails is to transform (linearly) a multivariate normalwith an input covariance matrix into the desired multivariate

  14. Sampling Plan for Assaying Plates Containing Depleted or Normal Uranium

    SciTech Connect (OSTI)

    Ivan R. Thomas

    2011-11-01

    This paper describes the rationale behind the proposed method for selecting a 'representative' sample of uranium metal plates, portions of which will be destructively assayed at the Y-12 Security Complex. The total inventory of plates is segregated into two populations, one for Material Type 10 (depleted uranium (DU)) and one for Material Type 81 (normal [or natural] uranium (NU)). The plates within each population are further stratified by common dimensions. A spreadsheet gives the collective mass of uranium element (and isotope for DU) and the piece count of all plates within each stratum. These data are summarized in Table 1. All plates are 100% uranium metal, and all but approximately 60% of the NU plates have Kel-F{reg_sign} coating. The book inventory gives an overall U-235 isotopic percentage of 0.22% for the DU plates, ranging from 0.19% to 0.22%. The U-235 ratio of the NU plates is assumed to be 0.71%. As shown in Table 1, the vast majority of the plates are comprised of depleted uranium, so most of the plates will be sampled from the DU population.

  15. FREQUENCY DEPENDENCE OF PULSE WIDTH FOR 150 RADIO NORMAL PULSARS

    SciTech Connect (OSTI)

    Chen, J. L. [Department of Physics and Electronic Engineering, Yuncheng University, 044000, Yuncheng, Shanxi (China); Wang, H. G., E-mail: hgwang.gz@gmail.com [Center for Astrophysics, Guangzhou University, 510006, Guangzhou (China)

    2014-11-01

    The frequency dependence of the pulse width is studied for 150 normal pulsars, mostly selected from the European Pulsar Network, for which the 10% multifrequency pulse widths can be well fit with the Thorsett relationship W {sub 10} = A?{sup ?} + W {sub 10,} {sub min}. The relative fraction of pulse width change between 0.4 GHz and 4.85 GHz, ? = (W {sub 4.85} – W {sub 0.4})/W {sub 0.4}, is calculated in terms of the best-fit relationship for each pulsar. It is found that 81 pulsars (54%) have ? < –10% (group A), showing considerable profile narrowing at high frequencies, 40 pulsars (27%) have –10% ?? ? 10% (group B), meaning a marginal change in pulse width, and 29 pulsars (19%) have ? > 10% (group C), showing a remarkable profile broadening at high frequencies. The fractions of the group-A and group-C pulsars suggest that the profile narrowing phenomenon at high frequencies is more common than the profile broadening phenomenon, but a large fraction of the group-B and group-C pulsars (a total of 46%) is also revealed. The group-C pulsars, together with a portion of group-B pulsars with slight pulse broadening, can hardly be explained using the conventional radius-to-frequency mapping, which only applies to the profile narrowing phenomenon. Based on a recent version of the fan beam model, a type of broadband emission model, we propose that the diverse frequency dependence of pulse width is a consequence of different types of distribution of emission spectra across the emission region. The geometrical effect predicting a link between the emission beam shrinkage and spectrum steepening is tested but disfavored.

  16. Modeling pore corrosion in normally open gold- plated copper connectors.

    SciTech Connect (OSTI)

    Battaile, Corbett Chandler; Moffat, Harry K.; Sun, Amy Cha-Tien; Enos, David George; Serna, Lysle M.; Sorensen, Neil Robert

    2008-09-01

    The goal of this study is to model the electrical response of gold plated copper electrical contacts exposed to a mixed flowing gas stream consisting of air containing 10 ppb H{sub 2}S at 30 C and a relative humidity of 70%. This environment accelerates the attack normally observed in a light industrial environment (essentially a simplified version of the Battelle Class 2 environment). Corrosion rates were quantified by measuring the corrosion site density, size distribution, and the macroscopic electrical resistance of the aged surface as a function of exposure time. A pore corrosion numerical model was used to predict both the growth of copper sulfide corrosion product which blooms through defects in the gold layer and the resulting electrical contact resistance of the aged surface. Assumptions about the distribution of defects in the noble metal plating and the mechanism for how corrosion blooms affect electrical contact resistance were needed to complete the numerical model. Comparisons are made to the experimentally observed number density of corrosion sites, the size distribution of corrosion product blooms, and the cumulative probability distribution of the electrical contact resistance. Experimentally, the bloom site density increases as a function of time, whereas the bloom size distribution remains relatively independent of time. These two effects are included in the numerical model by adding a corrosion initiation probability proportional to the surface area along with a probability for bloom-growth extinction proportional to the corrosion product bloom volume. The cumulative probability distribution of electrical resistance becomes skewed as exposure time increases. While the electrical contact resistance increases as a function of time for a fraction of the bloom population, the median value remains relatively unchanged. In order to model this behavior, the resistance calculated for large blooms has been weighted more heavily.

  17. Normal and lateral Casimir forces between deformed plates

    SciTech Connect (OSTI)

    Emig, Thorsten; Hanke, Andreas; Golestanian, Ramin; Kardar, Mehran [Institut fuer Theoretische Physik, Universitaet zu Koeln, Zuelpicher Strasse 77, D-50937 Cologne (Germany); Institut fuer Theoretische Physik, Universitaet Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart (Germany); Institute for Advanced Studies in Basic Sciences, Zanjan 45195-159 (Iran, Islamic Republic of); Institute for Studies in Theoretical Physics and Mathematics, P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of); Physics Department, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

    2003-02-01

    The Casimir force between macroscopic bodies depends strongly on their shape and orientation. To study this geometry dependence in the case of two deformed metal plates, we use a path-integral quantization of the electromagnetic field which properly treats the many-body nature of the interaction, going beyond the commonly used pairwise summation (PWS) of van der Waals forces. For arbitrary deformations we provide an analytical result for the deformation induced change in the Casimir energy, which is exact to second order in the deformation amplitude. For the specific case of sinusoidally corrugated plates, we calculate both the normal and the lateral Casimir forces. The deformation induced change in the Casimir interaction of a flat and a corrugated plate shows an interesting crossover as a function of the ratio of the mean plate distance H to the corrugation length {lambda}: For {lambda}<>H. The amplitude of the lateral force between two corrugated plates which are out of registry is shown to have a maximum at an optimal wavelength of {lambda}{approx_equal}2.5 H. With increasing H/{lambda} > or approx. 0.3 the PWS approach becomes a progressively worse description of the lateral force due to many-body effects. These results may be of relevance for the design and operation of novel microelectromechanical systems (MEMS) and other nanoscale devices.

  18. Movements of Palearctic and Afrotropical bird species during the dry season (NovemberFebruary) within Nigeria

    E-Print Network [OSTI]

    de Villiers, Marienne

    ­February) within Nigeria WILL CRESSWELL1, MARK BOYD2 & MATT STEVENS1 1AP Leventis Ornithological Research Institute, Jos, Nigeria & School of Biology, University of St Andrews, Fife, Scotland. wrlc@st-and.ac.uk 2Afrotropical bird species during the dry season (November­February) within Nigeria. pp. 18­28. In: Harebottle, D

  19. Flood quantiles in a changing climate: Seasonal forecasts and causal relations

    E-Print Network [OSTI]

    Arumugam, Sankar

    Flood quantiles in a changing climate: Seasonal forecasts and causal relations A maximum floods at a given location may change over time in response to interannual and longer climate fluctuations, we compare two approaches for the estimation of flood quantiles conditional on selected ``climate

  20. Assessing Seasonal Confounding and Model Selection Bias in Air Pollution Epidemiology Using Positive and

    E-Print Network [OSTI]

    Washington at Seattle, University of

    Assessing Seasonal Confounding and Model Selection Bias in Air Pollution Epidemiology Using July 15, 1999 #12;Abstract Much of the evidence for health e ects of particulate air pollution has come standards for ambient air pollutants to protect the public from adverse e ects. Much of the evidence for air

  1. Blue Oak Canopy Effect On Seasonal Forage Production and Quality1

    E-Print Network [OSTI]

    Blue Oak Canopy Effect On Seasonal Forage Production and Quality1 William E. Frost Neil K. Mc the canopy of blue oak (Quercus douglasii) and in open grassland at the San Joaquin Experimental Range blue oak compared to open grassland. At most sampling dates, the protein content was greater

  2. XI. DIFFUSEGLOBAL CORRELATIONS: SEASONAL VARIATIONS Estimating the performance of a solar system

    E-Print Network [OSTI]

    Oregon, University of

    39 XI. DIFFUSE­GLOBAL CORRELATIONS: SEASONAL VARIATIONS Estimating the performance of a solar system requires an accurate assessment of incident solar radiation. Ordinarily, solar radiation-9]. In the previous section we presented a one- parameter correlation study using direct and global data from our

  3. RESEARCH ARTICLE A seasonal cycle of terrestrial inputs in Lake Van, Turkey

    E-Print Network [OSTI]

    Gilli, Adrian

    RESEARCH ARTICLE A seasonal cycle of terrestrial inputs in Lake Van, Turkey C. Huguet & S. Fietz Van in Turkey is the world's largest soda lake (607 km3 ). The lake's catchment area is estimated the environmental status of a lake today and in the recent history. Lake Van in Eastern Anatolia (Turkey

  4. Seasonal subsidence and rebound in Las Vegas Valley, Nevada, observed by synthetic aperture radar interferometry

    E-Print Network [OSTI]

    Amelung, Falk

    Seasonal subsidence and rebound in Las Vegas Valley, Nevada, observed by synthetic aperture radar in the subsidence and rebound occurring over stressed aquifer systems, in conjunction with measurements, generally permanent aquifer system compaction and land subsidence at yearly and longer timescales, caused

  5. Vocal Control Region Sizes of an Adult Female Songbird Change Seasonally in the Absence of

    E-Print Network [OSTI]

    Deviche, Pierre

    ­211, 2000 Keywords: junco; androgen; HVc; sexual dimorphism; plasticity In oscine birds, song is a learned birds, brain areas [vocal control regions (VCRs)] that control vocal behavior learning and expression. In behaviorally dimorphic species, VCRs are larger in males than females and change seasonally also in females

  6. Reproductive Seasonality in Female Capuchins (Cebus capucinus) in Santa Rosa (Area de

    E-Print Network [OSTI]

    Fedigan, Linda M.

    The income-capital breeding model was developed to explain birth seasonality and reproductive strategies in female animals in relation to the abundance of food energy in the environment. An income breeder uses currently available energy and acts so as to maximize either maternal survival or weanling survival

  7. Seasonal variations of semidiurnal tidal perturbations in mesopause region temperature and zonal and meridional winds above

    E-Print Network [OSTI]

    to conserve wave energy. When propagating into the MLT region, the horizontal wind tidal amplitude can reachSeasonal variations of semidiurnal tidal perturbations in mesopause region temperature and zonal, Colorado (40.6°N, 105.1°W). The observed monthly results are in good agreement with MF radar tidal

  8. Seasonal Changes in Bacterial and Archaeal Gene Expression Patterns across Salinity Gradients in the

    E-Print Network [OSTI]

    their metabolic activities, microbial populations mediate the impact of high gradient regions on ecologicalSeasonal Changes in Bacterial and Archaeal Gene Expression Patterns across Salinity Gradients in nitrogen and carbon metabolism in the CRCM. Initial experiments with the environmental microarrays were

  9. Simulating cold season snowpack: Impacts of snow albedo and multi-layer snow physics

    E-Print Network [OSTI]

    Xue, Yongkang

    Simulating cold season snowpack: Impacts of snow albedo and multi-layer snow physics D. Waliser & J of the alterations of snow albedo due to anthropogenic aerosol deposition on snowpack and the treatment of snow physics using a multi-layer snow model. The snow albedo component considered qualitatively future changes

  10. Wind stress forcing of the Oregon coastal ocean during the 1999 upwelling season

    E-Print Network [OSTI]

    Balasubramanian, Ravi

    Wind stress forcing of the Oregon coastal ocean during the 1999 upwelling season R. Samelson, P November 2001; published 1 May 2002. [1] The wind stress forcing of the Oregon coastal ocean during June hypothesis that systematic variations in local wind stress may contribute to the observed offshore

  11. Biogeography and phenology of satellite-measured phytoplankton seasonality in the California current

    E-Print Network [OSTI]

    Thomas, Andrew

    to be influenced by changes in the seasonality of the wind mixing power offshore, coastal upwelling in the near of the ocean offshore, upwelling cold, nutrient-rich, subsurface water near the coast (Hill et al., 1998 the northern and southern coastal upwelling zones, one with a summer minimum offshore in mid

  12. Atmospheric forcing of the Oregon coastal ocean during the 2001 upwelling season

    E-Print Network [OSTI]

    Kurapov, Alexander

    by nonlinear internal ocean tides. The diurnal cycle of wind stress was similar for both southwardAtmospheric forcing of the Oregon coastal ocean during the 2001 upwelling season J. M. Bane,1 M. D. Southward wind stresses of 0.05À0.1 N mÀ2 occurred roughly 75% of the time, with a sustained period

  13. Local time, substorm, and seasonal dependence of electron precipitation at Lapprox. =4 inferred from riometer measurements

    SciTech Connect (OSTI)

    Rosenberg, T.J.; Dudeney, J.R.

    1986-11-01

    We have examined the variations of electron precipitation at Lapprox. =4 as inferred from riometer measurements of cosmic radio noise absorption made during 1975 at Siple Station and Halley Bay, Antarctica. The results are presented in the form of annual and seasonal averages of 1/2-hourly values for two geomagnetic activity subsets, AE>140 nT (disturbed) and AEless than or equal to 140 nT (quiet). Monthly quiet day curves were used to remove the diurnal and seasonal variations in the background noise levels. Generally, the local time characteristics of the absorption were the same at both stations; the highest absorption occurred in the 0400--1600 MLT sector during disturbed conditions and in the 1200--2000 MLT sector during quiet conditions. For high AE, the highest correlation was obtained at a lag equal to the magnetic local time difference (1.5 hours) between the two stations. On the other hand, for low AE, the highest correlation occurred for a lag of 3.0 hours, nearer the local solar time difference (3.8 hours). Consistently higher absorption was measured at Halley on the average during both levels of magnetic disturbance and in all seasons. At both locations, and for both geomagnetic activity subsets, more absorption was observed in summer and equinox than in winter. This is in contrast to earlier studies for Lgreater than or equal to6, and suggests that a meridional reversal of seasonal behavior occurs between L = 4 and L = 6.

  14. Seasonal Maize Forecasting for South Africa and Zimbabwe Derived from an Agroclimatological Model

    E-Print Network [OSTI]

    Martin, Randall

    ) and sea level pressure (SLP) readings to anticipate water-stress six months prior to harvest-economic variability. Explored within is a new approach to seasonal crop forecasting, one derived from crop water, and other climatic factors over the period 1961-1994 are compared with calculated available water from

  15. Detecting changes in seasonal precipitation extremes using regional climate model projections: Implications for managing fluvial flood

    E-Print Network [OSTI]

    Fowler, Hayley

    further demonstrates that existing precautionary allowances for climate change used for flood managementClick Here for Full Article Detecting changes in seasonal precipitation extremes using regional climate model projections: Implications for managing fluvial flood risk H. J. Fowler1 and R. L. Wilby2

  16. Seasonal Prevalence of Hematodinium sp. Infections of Blue Crabs in Three South Carolina (USA) Rivers

    E-Print Network [OSTI]

    Childress, Michael J.

    Seasonal Prevalence of Hematodinium sp. Infections of Blue Crabs in Three South Carolina (USA at an alarming rate. In South Carolina, these declines are significantly correlated with years of decreased (Atlantic States Marine Fisheries Commission 2004). In South Carolina, annual fishery landings of blue crabs

  17. FORECAST OF ATLANTIC SEASONAL HURRICANE ACTIVITY AND LANDFALL STRIKE PROBABILITY FOR 2013

    E-Print Network [OSTI]

    Connors, Daniel A.

    Hurricanes (MH) (2.0) 4 4 0 3 3 Major Hurricane Days (MHD) (3.9) 9 9 0 7 7 Accumulated Cyclone Energy (ACE Coast Including Peninsula Florida - 40% (full-season average for last century is 31%) 3) Gulf Coast from%) New Jersey 2% (1%) New York 10% (8%) 4% (3%) Connecticut 10% (7%) 3% (2%) Rhode

  18. Variable ecological effects of hurricanes: The importance of seasonal timing for survival

    E-Print Network [OSTI]

    Losos, Jonathan B.

    Variable ecological effects of hurricanes: The importance of seasonal timing for survival University, St. Louis, MO 63130 Contributed by Thomas W. Schoener, October 24, 2003 Two recent hurricanes populations inhabiting exactly the same islands. The hurricanes differed in two ways: one struck during

  19. Phytologia (April 2012) 94(1) 91 SEASONAL VARIATION IN THE LEAF ESSENTIAL OIL OF

    E-Print Network [OSTI]

    Adams, Robert P.

    Phytologia (April 2012) 94(1) 91 SEASONAL VARIATION IN THE LEAF ESSENTIAL OIL OF TAXODIUM DISTICHUM Robert_Adams@baylor.edu ABSTRACT The leaf essential oil of Taxodium distichum is dominated by -pinene (63-69%) with moderate amounts of limonene, - phellandrene, myrcene and -pinene. Oil yield increased from April (3.45 mg

  20. Seasonal Variations of Yellow Sea Fog: Observations and Mechanisms* SU-PING ZHANG

    E-Print Network [OSTI]

    Xie, Shang-Ping

    Seasonal Variations of Yellow Sea Fog: Observations and Mechanisms* SU-PING ZHANG Physical of China, Qingdao, China (Manuscript received 27 August 2008, in final form 26 April 2009) ABSTRACT Sea fog is frequently observed over the Yellow Sea, with an average of 50 fog days on the Chinese coast during April