National Library of Energy BETA

Sample records for reduced momentary outages

  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. 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

  3. 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.

  4. 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.

  5. 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 ...

  6. 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)

  7. 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.

  8. 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

  9. 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.

  10. 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.

  11. 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

  12. 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

  13. 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.

  14. 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.

  15. 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.

  16. 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.

  17. 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...

  18. 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...

  19. 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

  20. 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...

  1. 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 ...

  2. 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

  3. 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

  4. 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

  5. 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.

  6. 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.

  7. 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

  8. 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

  9. 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

  10. 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

  11. Using Ecological Momentary Assessment to Monitor Community Participation of People with Mobility-Related Disabilities

    E-Print Network [OSTI]

    Gonda, Chiaki

    2011-06-27

    Increased community participation of people with disabilities is a goal of many community-based disability organizations. Researchers used an ecological momentary assessment (EMA) approach to investigate factors that might increase community...

  12. 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.

  13. 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

  14. 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.

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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.

  20. 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

  1. 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.

  2. 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.

  3. 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

  4. 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...

  5. 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...

  6. 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.

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  1. 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

  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. 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

  4. 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)

  5. 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.

  6. 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.

  7. 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.

  8. 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)

  9. 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)

  10. 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

  11. 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

  12. 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...

  13. Management of inventory to reduce outages in supply feeder

    SciTech Connect (OSTI)

    Mielczarski, W.; Khan, M.E.; Sugianto, L.F. [Monash Univ., Clayton, Victoria (Australia)

    1995-12-31

    The paper presents an application of Dynamic Programming to optimal allocation of resources in spare items to increase reliability of supply. System Average Interruption Duration Index (SAIDI) has been selected as the performance index. Distribution transformers have been selected to investigate applicability of the proposed approach to distribution network equipment. The paper provides an analysis of relationships between the index assumed and parameters of distribution systems. Results of optimization for four levels of budget limitation show that resources can be allocated in the best way by Dynamic Programming but results depend on the assumed performance index and its parameters.

  14. 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

  15. 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

  16. 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.

  17. 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

  18. 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

  19. 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.

  20. 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.

  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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...

  11. 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.

  12. 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...

  13. 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...

  14. 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...

  15. 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.

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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...

  15. 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.

  16. 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

  17. 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

  18. 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

  19. 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.

  20. 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

  1. 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.

  2. 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.

  3. 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

  4. 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.

  5. 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)

  6. 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.

  7. 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

  8. 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

  9. 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.

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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...

  9. 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

  10. Sandia Energy - Hoboken Hopes To Reduce Power Outages With New 'Smart

    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 RoomPreservation of Fe(II)Geothermal Energy & Drilling TechnologyHeavyHigh-TemperatureHPC

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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...

  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. 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)

  6. 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)

  7. 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.

  8. Impact on Coverage and Capacity of Reduced Transmit Power in Cellular Networks

    E-Print Network [OSTI]

    Coupechoux, Marceau

    . Coupechoux (TPT) Limiting Power Transmission 4 April 2012 1 / 20 #12;Outlines Interference Model Outage Transmission 4 April 2012 4 / 20 #12;Outage Probabilities Outage Probabilities: Generic Expression For n MS Power Transmission 4 April 2012 5 / 20 #12;Outage Probabilities Outage Probabilities: Without Shadowing

  9. 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)

  10. 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.

  11. 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.

  12. 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.

  13. Reduces electric energy consumption

    E-Print Network [OSTI]

    BENEFITS · Reduces electric energy consumption · Reduces peak electric demand · Reduces natural gas consumption · Reduces nonhazardous solid waste and wastewater generation · Potential annual savings products for the automotive industry, electrical equipment, and miscellaneous other uses nationwide. ALCOA

  14. 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...

  15. 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

  16. 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

  17. 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 »

  18. 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.

  19. Saving Fuel, Reducing Emissions

    E-Print Network [OSTI]

    Kammen, Daniel M.; Arons, Samuel M.; Lemoine, Derek M.; Hummel, Holmes

    2009-01-01

    regenerative braking, as do Saving Fuel, Reducing Emissionsconditions, the expected savings in fuel costs are notis whether the fuel cost savings over the lifetime of the

  20. Saving Fuel, Reducing Emissions

    E-Print Network [OSTI]

    Kammen, Daniel M.; Arons, Samuel M.; Lemoine, Derek M.; Hummel, Holmes

    2009-01-01

    would in turn lower PHEV fuel costs and make them morestretches from fossil-fuel- powered conventional vehiclesbraking, as do Saving Fuel, Reducing Emissions Making Plug-

  1. Reduced shear power spectrum

    SciTech Connect (OSTI)

    Dodelson, Scott; /Fermilab /Chicago U., Astron. Astrophys. Ctr. /Northwestern U.; Shapiro, Charles; /Chicago U. /KICP, Chicago; White, Martin J.; /UC, Berkeley, Astron.

    2005-08-01

    Measurements of ellipticities of background galaxies are sensitive to the reduced shear, the cosmic shear divided by (1-{kappa}) where {kappa} is the projected density field. They compute the difference between shear and reduced shear both analytically and with simulations. The difference becomes more important an smaller scales, and will impact cosmological parameter estimation from upcoming experiments. A simple recipe is presented to carry out the required correction.

  2. Reducing Configuration Complexity

    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 PartiesBuildingBudgetFinancial Opportunities » Pastams AG 2015 Reducing

  3. Naval electrochemical corrosion reducer

    DOE Patents [OSTI]

    Clark, Howard L. (Ballston Lake, NY)

    1991-10-01

    A corrosion reducer for use with ships having a hull, a propeller mounted a propeller shaft and extending through the hull, bearings supporting the shaft, at least one thrust bearing and one seal. The improvement includes a current collector and a current reduction assembly for reducing the voltage between the hull and shaft in order to reduce corrosion due to electrolytic action. The current reduction assembly includes an electrical contact, the current collector, and the hull. The current reduction assembly further includes a device for sensing and measuring the voltage between the hull and the shaft and a device for applying a reverse voltage between the hull and the shaft so that the resulting voltage differential is from 0 to 0.05 volts. The current reduction assembly further includes a differential amplifier having a voltage differential between the hull and the shaft. The current reduction assembly further includes an amplifier and a power output circuit receiving signals from the differential amplifier and being supplied by at least one current supply. The current selector includes a brush assembly in contact with a slip ring over the shaft so that its potential may be applied to the differential amplifier.

  4. 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.

  5. Pressure reducing regulator

    DOE Patents [OSTI]

    Whitehead, John C. (Davis, CA); Dilgard, Lemoyne W. (Willits, CA)

    1995-01-01

    A pressure reducing regulator that controls its downstream or outlet pressure to a fixed fraction of its upstream or inlet pressure. The regulator includes a housing which may be of a titanium alloy, within which is located a seal or gasket at the outlet end which may be made of annealed copper, a rod, and piston, each of which may be made of high density graphite. The regulator is insensitive to temperature by virtue of being without a spring or gas sealed behind a diaphragm, and provides a reference for a system in which it is being used. The rod and piston of the regulator are constructed, for example, to have a 1/20 ratio such that when the downstream pressure is less than 1/20 of the upstream pressure the regulator opens and when the downstream pressure exceeds 1/20 of the upstream pressure the regulator closes.

  6. Pressure reducing regulator

    DOE Patents [OSTI]

    Whitehead, J.C.; Dilgard, L.W.

    1995-10-10

    A pressure reducing regulator that controls its downstream or outlet pressure to a fixed fraction of its upstream or inlet pressure is disclosed. The regulator includes a housing which may be of a titanium alloy, within which is located a seal or gasket at the outlet end which may be made of annealed copper, a rod, and piston, each of which may be made of high density graphite. The regulator is insensitive to temperature by virtue of being without a spring or gas sealed behind a diaphragm, and provides a reference for a system in which it is being used. The rod and piston of the regulator are constructed, for example, to have a 1/20 ratio such that when the downstream pressure is less than 1/20 of the upstream pressure the regulator opens and when the downstream pressure exceeds 1/20 of the upstream pressure the regulator closes. 10 figs.

  7. Reducing Penguin Pollution

    E-Print Network [OSTI]

    Bhubanjyoti Bhattacharya; Alakabha Datta; David London

    2013-04-29

    The most common decay used for measuring 2beta_s, the phase of Bs-Bsbar mixing, is Bs -> J/psi phi. This decay is dominated by the colour-suppressed tree diagram, but there are other contributions due to gluonic and electroweak penguin diagrams. These are often referred to as "penguin pollution" (PP) because their inclusion in the amplitude leads to a theoretical error in the extraction of 2beta_s from the data. In the standard model (SM), it is estimated that the PP is negligible, but there is some uncertainty as to its exact size. Now, phi_s^{c\\bar{c}s} (the measured value of 2beta_s) is small, in agreement with the SM, but still has significant experimental errors. When these are reduced, if one hopes to be able to see clear evidence of new physics (NP), it is crucial to have the theoretical error under control. In this paper, we show that, using a modification of the angular analysis currently used to measure phi_s^{c\\bar{c}s} in Bs -> J/psi phi, one can reduce the theoretical error due to PP. Theoretical input is still required, but it is much more modest than entirely neglecting the PP. If phi_s^{c\\bar{c}s} differs from the SM prediction, this points to NP in the mixing. There is also enough information to test for NP in the decay. This method can be applied to all Bs/Bsbar -> V1 V2 decays.

  8. 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

  9. 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

  10. 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

  11. 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 &

  12. Stewarding a Reduced Stockpile

    SciTech Connect (OSTI)

    Goodwin, B T; Mara, G

    2008-04-18

    The future of the US nuclear arsenal continues to be guided by two distinct drivers: the preservation of world peace and the prevention of further proliferation through our extended deterrent umbrella. Timely implementation of US nuclear policy decisions depends, in part, on the current state of stockpile weapons, their delivery systems, and the supporting infrastructure within the Department of Defense (DoD) and the Department of Energy's National Nuclear Security Administration (NNSA). In turn, the present is a product of past choices and world events. Now more than ever, the nuclear weapons program must respond to the changing global security environment and to increasing budget pressures with innovation and sound investments. As the nation transitions to a reduced stockpile, the successes of the Stockpile Stewardship Program (SSP) present options to transition to a sustainable complex better suited to stockpile size, national strategic goals and budgetary realities. Under any stockpile size, we must maintain essential human capital, forefront capabilities, and have a right-sized effective production capacity. We present new concepts for maintaining high confidence at low stockpile numbers and to effectively eliminate the reserve weapons within an optimized complex. We, as a nation, have choices to make on how we will achieve a credible 21st century deterrent.

  13. Reducing gas generators and methods for generating a reducing gas

    SciTech Connect (OSTI)

    Scotto, Mark Vincent; Perna, Mark Anthony

    2015-11-03

    One embodiment of the present invention is a unique reducing gas generator. Another embodiment is a unique method for generating a reducing gas. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for generating reducing gas. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.

  14. 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.

  15. Technological Innovations Enabling Automatic, Context-Sensitive Ecological Momentary Assessment

    E-Print Network [OSTI]

    Intille, Stephen S.

    2007-01-01

    Health-related behavior, subjective states, cognitions, and interpersonal experiences are inextricably linked to context. Context includes information about location, time, past activities, interaction with other people ...

  16. Oxygen-reducing catalyst layer

    DOE Patents [OSTI]

    O'Brien, Dennis P. (Maplewood, MN); Schmoeckel, Alison K. (Stillwater, MN); Vernstrom, George D. (Cottage Grove, MN); Atanasoski, Radoslav (Edina, MN); Wood, Thomas E. (Stillwater, MN); Yang, Ruizhi (Halifax, CA); Easton, E. Bradley (Halifax, CA); Dahn, Jeffrey R. (Hubley, CA); O'Neill, David G. (Lake Elmo, MN)

    2011-03-22

    An oxygen-reducing catalyst layer, and a method of making the oxygen-reducing catalyst layer, where the oxygen-reducing catalyst layer includes a catalytic material film disposed on a substrate with the use of physical vapor deposition and thermal treatment. The catalytic material film includes a transition metal that is substantially free of platinum. At least one of the physical vapor deposition and the thermal treatment is performed in a processing environment comprising a nitrogen-containing gas.

  17. Reduced

    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 * Impactsand engineersAcquisition andRedox ShuttleRedox

  18. Reducing the Vulnerability of Electric Power Grids to Terrorist Attacks

    SciTech Connect (OSTI)

    Ross Baldick; Thekla Boutsika; Jin Hur; Manho Joung; Yin Wu; Minqi Zhong

    2009-01-31

    This report describes the development of a cascading outage analyzer that, given an initial disturbance on an electric power system, checks for thermal overloads, under-frequency and over-frequency conditions, and under-voltage conditions that would result in removal of elements from the system. The analyzer simulates the successive tripping of elements due to protective actions until a post-event steady state or a system blackout is reached.

  19. Reduced shedding regenerator and method

    DOE Patents [OSTI]

    Qiu, Songgang (Richland, WA); Augenblick, John E. (Richland, WA); Erbeznik, Raymond M. (Kennewick, WA)

    2007-05-22

    A reduced shedding regenerator and method are disclosed with regenerator surfaces to minimize shedding of particles from the regenerator thereby alleviating a source of potential damage and malfunction of a thermal regenerative machine using the regenerator.

  20. The combinatorics of reduced decompositions

    E-Print Network [OSTI]

    Tenner, Bridget Eileen

    2006-01-01

    This thesis examines several aspects of reduced decompositions in finite Coxeter groups. Effort is primarily concentrated on the symmetric group, although some discussions are subsequently expanded to finite Coxeter groups ...

  1. 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.

  2. Reduced waste generation, FY 1986

    SciTech Connect (OSTI)

    Not Available

    1986-02-01

    The United States Department of Energy is committed to the principles of minimizing the quantity and transuranic content of its transuranium (TRU) waste being generated at its nuclear facilities. The reasons are to reduce costs associated with waste handling and disposal, and also to reduce radiation exposure to workers and risk for radionuclide release to man and the environment. The purpose of this document is to provide the USDOE with a plan of research and development tasks for waste minimization, and is prepared so as to provide the maximum impact on volumes based on cost/benefit factors. The document is to be updated annually or as needed to reflect current and future tasks. The Reduced Waste Generation (RWG) tasks encompass a wide range of activities with the principal goals of (1) preventing the generation of waste and (2) converting TRU waste into low-level wastes (LLW) by sorting or decontamination. Concepts for reducing the volume such as in incineration and compaction are considered within the discipline of Reduced Waste Generation, but are considered as somewhat developed technology with only a need for implementation. 33 refs.

  3. Reduce air, reduce compliance cost new patented spray booth technology

    SciTech Connect (OSTI)

    McGinnis, F.

    1997-12-31

    A New Paint Spray Booth System that dramatically reduces air volumes normally required for capturing and controlling paint overspray that contains either Volatile Organic Compounds (VOC) or Hazardous Air Pollutants (HAP), or both. In turn, a substantial reduction in capital equipment expenditures for air abatement systems and air make-up heaters as well as related annual operating expenses is realized.

  4. Microbial methods of reducing technetium

    DOE Patents [OSTI]

    Wildung, Raymond E. (Richland, WA) [Richland, WA; Garland, Thomas R. (Greybull, WY) [Greybull, WY; Gorby, Yuri A. (Richland, WA) [Richland, WA; Hess, Nancy J. (Benton City, WA) [Benton City, WA; Li, Shu-Mei W. (Richland, WA) [Richland, WA; Plymale, Andrew E. (Richland, WA) [Richland, WA

    2001-01-01

    The present invention is directed toward a method for microbial reduction of a technetium compound to form other compounds of value in medical imaging. The technetium compound is combined in a mixture with non-growing microbial cells which contain a technetium-reducing enzyme system, a stabilizing agent and an electron donor in a saline solution under anaerobic conditions. The mixture is substantially free of an inorganic technetium reducing agent and its reduction products. The resulting product is Tc of lower oxidation states, the form of which can be partially controlled by the stabilizing agent. It has been discovered that the microorganisms Shewanella alga, strain Bry and Shewanelia putrifacians, strain CN-32 contain the necessary enzyme systems for technetium reduction and can form both mono nuclear and polynuclear reduced Tc species depending on the stabilizing agent.

  5. Unconventional Groundwater System Proves Effective in Reducing...

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

    Unconventional Groundwater System Proves Effective in Reducing Contamination at West Valley Demonstration Project Unconventional Groundwater System Proves Effective in Reducing...

  6. Reduced Harmonic Representation of Partitions

    E-Print Network [OSTI]

    Michalis Psimopoulos

    2011-03-08

    In the present article the reduced integral representation of partitions in terms of harmonic products has been derived first by using hypergeometry and the new concept of fractional sum and secondly by studying the Fourier series of the kernel function appearing in the integral representation. Using the method of induction, a generalization of the theory has also been obtained.

  7. CORRESPONDENCE Reduced major axis regression

    E-Print Network [OSTI]

    CORRESPONDENCE Reduced major axis regression and the island rule The Ôisland ruleÕ describes). The slope of the least-squares regression of Y on X, b, measures the extent to which large body sizes tend- ferent way, as the regression of Y ) X on X, and here the slope (b¢) is generally negative (b¢ = b ) 1

  8. Reduced-vibration tube array

    DOE Patents [OSTI]

    Bruck, Gerald J.; Bartolomeo, Daniel R.

    2004-07-20

    A reduced-vibration tube array is disclosed. The array includes a plurality of tubes in a fixed arrangement and a plurality of damping members positioned within the tubes. The damping members include contoured interface regions characterized by bracing points that selectively contact the inner surface of an associated tube. Each interface region is sized and shaped in accordance with the associated tube, so that the damping member bracing points are spaced apart a vibration-reducing distance from the associated tube inner surfaces at equilibrium. During operation, mechanical interaction between the bracing points and the tube inner surfaces reduces vibration by a damage-reducing degree. In one embodiment, the interface regions are serpentine shaped. In another embodiment, the interface regions are helical in shape. The interface regions may be simultaneously helical and serpentine in shape. The damping members may be fixed within the associated tubes, and damping member may be customized several interference regions having attributes chosen in accordance with desired flow characteristics and associated tube properties.

  9. Reducing carbon dioxide to products

    DOE Patents [OSTI]

    Cole, Emily Barton; Sivasankar, Narayanappa; Parajuli, Rishi; Keets, Kate A

    2014-09-30

    A method reducing carbon dioxide to one or more products may include steps (A) to (C). Step (A) may bubble said carbon dioxide into a solution of an electrolyte and a catalyst in a divided electrochemical cell. The divided electrochemical cell may include an anode in a first cell compartment and a cathode in a second cell compartment. The cathode may reduce said carbon dioxide into said products. Step (B) may adjust one or more of (a) a cathode material, (b) a surface morphology of said cathode, (c) said electrolyte, (d) a manner in which said carbon dioxide is bubbled, (e), a pH level of said solution, and (f) an electrical potential of said divided electrochemical cell, to vary at least one of (i) which of said products is produced and (ii) a faradaic yield of said products. Step (C) may separate said products from said solution.

  10. Ferroelectric capacitor with reduced imprint

    DOE Patents [OSTI]

    Evans, Jr., Joseph T. (13609 Verbena Pl., NE., Albuquerque, NM 87112); Warren, William L. (7716 Wm. Moyers Ave., NE., Albuquerque, NM 87122); Tuttle, Bruce A. (12808 Lillian Pl., NE., Albuquerque, NM 87122); Dimos, Duane B. (6105 Innsbrook Ct., NE., Albuquerque, NM 87111); Pike, Gordon E. (1609 Cedar Ridge, NE., Albuquerque, NM 87112)

    1997-01-01

    An improved ferroelectric capacitor exhibiting reduced imprint effects in comparison to prior art capacitors. A capacitor according to the present invention includes top and bottom electrodes and a ferroelectric layer sandwiched between the top and bottom electrodes, the ferroelectric layer comprising a perovskite structure of the chemical composition ABO.sub.3 wherein the B-site comprises first and second elements and a dopant element that has an oxidation state greater than +4. The concentration of the dopant is sufficient to reduce shifts in the coercive voltage of the capacitor with time. In the preferred embodiment of the present invention, the ferroelectric element comprises Pb in the A-site, and the first and second elements are Zr and Ti, respectively. The preferred dopant is chosen from the group consisting of Niobium, Tantalum, and Tungsten. In the preferred embodiment of the present invention, the dopant occupies between 1 and 8% of the B-sites.

  11. MapReduce SVM Game

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

    Vineyard, Craig M.; Verzi, Stephen J.; James, Conrad D.; Aimone, James B.; Heileman, Gregory L.

    2015-08-10

    Despite technological advances making computing devices faster, smaller, and more prevalent in today's age, data generation and collection has outpaced data processing capabilities. Simply having more compute platforms does not provide a means of addressing challenging problems in the big data era. Rather, alternative processing approaches are needed and the application of machine learning to big data is hugely important. The MapReduce programming paradigm is an alternative to conventional supercomputing approaches, and requires less stringent data passing constrained problem decompositions. Rather, MapReduce relies upon defining a means of partitioning the desired problem so that subsets may be computed independently andmore »recom- bined to yield the net desired result. However, not all machine learning algorithms are amenable to such an approach. Game-theoretic algorithms are often innately distributed, consisting of local interactions between players without requiring a central authority and are iterative by nature rather than requiring extensive retraining. Effectively, a game-theoretic approach to machine learning is well suited for the MapReduce paradigm and provides a novel, alternative new perspective to addressing the big data problem. In this paper we present a variant of our Support Vector Machine (SVM) Game classifier which may be used in a distributed manner, and show an illustrative example of applying this algorithm.« less

  12. Reducing Your Electricity Use | Department of Energy

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

    Reducing Your Electricity Use Reducing Your Electricity Use July 15, 2012 - 4:11pm Addthis An energy audit can help you find the most effective ways to save money and reduce energy...

  13. Innovative Computational Tools for Reducing Exploration Risk...

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

    Computational Tools for Reducing Exploration Risk Through Integration of Water-Rock Interactions and Magnetotelluric Surveys Innovative Computational Tools for Reducing Exploration...

  14. Reducing Emissions Through Sustainable Transport: Proposal for...

    Open Energy Info (EERE)

    Reducing Emissions Through Sustainable Transport: Proposal for a Sectoral Approach Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Reducing Emissions Through Sustainable...

  15. New York: Weatherizing Westbeth Reduces Energy Consumption |...

    Office of Environmental Management (EM)

    York: Weatherizing Westbeth Reduces Energy Consumption New York: Weatherizing Westbeth Reduces Energy Consumption August 21, 2013 - 12:00am Addthis The New York State Homes and...

  16. Reduced vibration motor winding arrangement

    DOE Patents [OSTI]

    Slavik, C.J.; Rhudy, R.G.; Bushman, R.E.

    1997-11-11

    An individual phase winding arrangement having a sixty electrical degree phase belt width for use with a three phase motor armature includes a delta connected phase winding portion and a wye connected phase winding portion. Both the delta and wye connected phase winding portions have a thirty electrical degree phase belt width. The delta and wye connected phase winding portions are each formed from a preselected number of individual coils each formed, in turn, from an unequal number of electrical conductor turns in the approximate ratio of {radical}3. The individual coils of the delta and wye connected phase winding portions may either be connected in series or parallel. This arrangement provides an armature winding for a three phase motor which retains the benefits of the widely known and utilized thirty degree phase belt concept, including improved mmf waveform and fundamental distribution factor, with consequent reduced vibrations and improved efficiency. 4 figs.

  17. Reduced vibration motor winding arrangement

    DOE Patents [OSTI]

    Slavik, Charles J. (Rexford, NY); Rhudy, Ralph G. (Scotia, NY); Bushman, Ralph E. (Lathem, NY)

    1997-01-01

    An individual phase winding arrangement having a sixty electrical degree phase belt width for use with a three phase motor armature includes a delta connected phase winding portion and a wye connected phase winding portion. Both the delta and wye connected phase winding portions have a thirty electrical degree phase belt width. The delta and wye connected phase winding portions are each formed from a preselected number of individual coils each formed, in turn, from an unequal number of electrical conductor turns in the approximate ratio of .sqroot.3. The individual coils of the delta and wye connected phase winding portions may either be connected in series or parallel. This arrangement provides an armature winding for a three phase motor which retains the benefits of the widely known and utilized thirty degree phase belt concept, including improved mmf waveform and fundamental distribution factor, with consequent reduced vibrations and improved efficiency.

  18. A REDUCED GENERATOR MODEL WITH EXCITATION LIMITS Steven Ball Kevin Wedeward Ernest Barany Steve Schaffer

    E-Print Network [OSTI]

    Wedeward, Kevin

    in dynamic studies of electric power systems. The proposed model captures important characteristics be sufficient for analysis of power system dynamics. KEY WORDS Model reduction, simulation, electric power, generator models 1. Introduction The consequences of electric power outages dictate the importance

  19. 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

  20. Reduced models for quantum gravity

    E-Print Network [OSTI]

    T. Thiemann

    1999-10-04

    The preceding talks given at this conference have dealt mainly with general ideas for, main problems of and techniques for the task of quantizing gravity canonically. Since one of the major motivations to arrange for this meeting was that it should serve as a beginner's introduction to canonical quantum gravity, we regard it as important to demonstrate the usefulness of the formalism by means of applying it to simplified models of quantum gravity, here formulated in terms of Ashtekar's new variables. From the various, completely solvable, models that have been discussed in the literature we choose those that we consider as most suitable for our pedagogical reasons, namely 2+1 gravity and the spherically symmetric model. The former model arises from a dimensional, the latter from a Killing reduction of full 3+1 gravity. While 2+1 gravity is usually treated in terms of closed topologies without boundary of the initial data hypersurface, the toplogy for the spherically symmetric system is chosen to be asymptotically flat. Finally, 2+1 gravity is more suitably quantized using the loop representation while spherically symmetric gravity is easier to quantize via the self-dual representation. Accordingly, both types of reductions, both types of topologies and both types of representations that are mainly employed in the literature in the context of the new variables come into practice. What makes the discussion especially clear is the fact that for both models the reduced phase space turns out to be finitely dimensional.

  1. 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...

  2. 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 ...

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. WASTE DESCRIPTION TYPE OF PROJECT POUNDS REDUCED,

    E-Print Network [OSTI]

    to the manufacturer . Replaced with energy efficient light emitting diode (LED) signs. Project reduced risk of tritium

  10. Reducing Greenhouse Emissions and Fuel Consumption

    E-Print Network [OSTI]

    Shaheen, Susan; Lipman, Timothy

    2007-01-01

    world experience, mobility management strategies appear to have the po­ tential to reduce energy and CO2 emissions

  11. Reducing Your Leak Rate Without Repairing Leaks 

    E-Print Network [OSTI]

    Beals, C.

    2005-01-01

    below the header pressure have the added advantage of reducing the air consumption of equipment, as well as reducing the leak rate. Turn Off the Air to Idle Equipment In most plants, when production equipment operators shut off their equipment... of the reason why plant personnel often find leak repair unproductive. The other reason relates to the compressor controls. If the plant had several lubricated rotary screw compressors operating in modulation, repairing 2,000 cfm in leaks may only reduce...

  12. An optimizing reduced order FDS for the tropical Pacific Ocean reduced gravity model

    E-Print Network [OSTI]

    Aluffi, Paolo

    An optimizing reduced order FDS for the tropical Pacific Ocean reduced gravity model Zhendong Luoa) for the tropical Pacific Ocean reduced gravity model. Ensembles of data are compiled from transient solutions computed from the discrete equation system derived by FDS for the tropical Pacific Ocean reduced gravity

  13. Reduce Air Infiltration in Furnaces; Industrial Technologies...

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

    5 * January 2006 Industrial Technologies Program Reduce Air Infiltration in Furnaces Fuel-fired furnaces discharge combustion products through a stack or a chimney. Hot furnace...

  14. Generalized Reduced Order Modeling of Aeroservoelastic Systems

    E-Print Network [OSTI]

    Gariffo, James Michael

    2013-01-01

    Aeroelasticity, Dover, 1996. [7] Dowell, E. , Crawley, E. ,Engineering, 2010. [13] Dowell, E. , “Some Recent AdvancesFL, 2010. [14] Attar, P. and Dowell, E. , “A Reduced Order

  15. Combustion with reduced carbon in the ash

    DOE Patents [OSTI]

    Kobayashi, Hisashi; Bool, III, Lawrence E.

    2005-12-27

    Combustion of coal in which oxygen is injected into the coal as it emerges from burner produces ash having reduced amounts of carbon.

  16. Reducing Logistics Footprints and Replenishment Demands: Nano...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Reducing Logistics Footprints and Replenishment Demands: Nano-engineered Silica Aerogels a Proven Method for Water Treatment Citation Details In-Document Search...

  17. THE COST OF REDUCING VOC EMMISSIONS

    E-Print Network [OSTI]

    Bateman, Ian J.

    THE COST OF REDUCING VOC EMMISSIONS FROM 21 INDUSTRIES BY JONATHAN FISHER CSERGE WORKING PAPER WM 97-03 #12;THE COST OF REDUCING VOC EMISSIONS FROM 21 INDUSTRIES by Jonathan Fisher ERM Economics 8 and Industry to estimate the costs of various levels of controls on emissions of Volatile Organic Compounds

  18. Reducing Safety Flaring through Advanced Control 

    E-Print Network [OSTI]

    Hokanson, D.; Lehman, K.; Matsumoto, S.; Takai, N.; Takase, F.

    2010-01-01

    An advanced process control application, using DMCplus® (Aspen Technology, Inc.), was developed to substantially reduce fuel gas losses to the flare at a large integrated refining / petrochemical complex. Fluctuations in internal fuel gas system...

  19. Working Together to Reduce Our Environmental Footprint

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

    Ground Floor, & DOE Cafeteria MONDAY APRIL 20 11:00 A.M. - 2:30 P.M. * Environmental Film Series * Forrestal Small Auditorium GJ-015 See two excellent films related to reducing...

  20. Reducing Emissions in Plant Flaring Operations 

    E-Print Network [OSTI]

    Duck, B.

    2011-01-01

    latest technologies and reducing green house gas emissions.1 The company also created a Green Team with the objective of achieving zero injury, zero pollution, and zero accidents for all production facilities. These Green Teams advocated the company's new...

  1. Process for reducing aqueous nitrate to ammonia

    DOE Patents [OSTI]

    Mattus, A.J.

    1993-11-30

    Powdered aluminum is added to a nitrate-containing alkaline, aqueous solution to reduce the nitrate and/or nitrite to ammonia and co-produce a sinterable ceramic product. 3 figures.

  2. On reduced relatives with genitive subjects

    E-Print Network [OSTI]

    Krause, Cornelia (Cornelia Ann), 1972-

    2001-01-01

    What is the place of relatives with genitive subjects in a typology of relative clauses? Are they full or reduced, headed or free relatives? Can they appear pre- and postnominally? Can they be head-internal relatives? Are ...

  3. Reducing Your Electricity Use | Department of Energy

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

    If you are planning to install a small renewable energy system to make your own electricity, such as a solar electric system or small wind turbine, reducing your electricity...

  4. “Friday off”: Reducing Working Hours in Europe

    E-Print Network [OSTI]

    Kallis, Giorgos

    This article explores the pros and cons for reducing working hours in Europe. To arrive to an informed judgment we review critically the theoretical and empirical literature, mostly from economics, concerning the relation ...

  5. Continuous Improvement Energy Projects Reduce Energy Consumption 

    E-Print Network [OSTI]

    Niemeyer, E.

    2014-01-01

    Projects Reduce Energy Consumption Eric Niemeyer, Operations Superintendent Drilling Specialties Company A division of Chevron Phillips Chemical Company LP ESL-IE-14-05-31 Proceedings of the Thrity-Sixth Industrial Energy Technology Conference New... of the paper “Continuous Improvement Energy Projects Reduce Energy Consumption” by Bruce Murray and Allison Myers ESL-IE-14-05-31 Proceedings of the Thrity-Sixth Industrial Energy Technology Conference New Orleans, LA. May 20-23, 2014 Conroe, TX Facility ESL...

  6. Reducing mode circulating fluid bed combustion

    DOE Patents [OSTI]

    Lin, Yung-Yi (Katy, TX); Sadhukhan, Pasupati (Katy, TX); Fraley, Lowell D. (Sugarland, TX); Hsiao, Keh-Hsien (Houston, TX)

    1986-01-01

    A method for combustion of sulfur-containing fuel in a circulating fluid bed combustion system wherein the fuel is burned in a primary combustion zone under reducing conditions and sulfur captured as alkaline sulfide. The reducing gas formed is oxidized to combustion gas which is then separated from solids containing alkaline sulfide. The separated solids are then oxidized and recycled to the primary combustion zone.

  7. Reduced waste generation technical work plan

    SciTech Connect (OSTI)

    Not Available

    1987-05-01

    The United States Department of Energy has established policies for avoiding plutonium losses to the waste streams and minimizing the generation of wastes produced at its nuclear facilities. This policy is evidenced in DOE Order 5820.2, which states Technical and administrative controls shall be directed towards reducing the gross volume of TRU waste generated and the amount of radioactivity in such waste.'' To comply with the DOE directive, the Defense Transuranic Waste Program (DTWP) supports and provides funding for specific research and development tasks at the various DOE sites to reduce the generation of waste. This document has been prepared to give an overview of current and past Reduced Waste Generation task activities which are to be based on technical and cost/benefit factors. The document is updated annually, or as needed, to reflect the status of program direction. Reduced Waste Generation (RWG) tasks encompass a wide range of goals which are basically oriented toward (1) avoiding the generation of waste, (2) changing processes or operations to reduce waste, (3) converting TRU waste into LLW by sorting or decontamination, and (4) reducing volumes through operations such as incineration or compaction.

  8. Revisiting Modes of energy generation in sulfate reducing bacteria

    E-Print Network [OSTI]

    Joachimiak, Marcin

    2010-01-01

    generation in sulfate reducing bacteria 1. Lawrence BerkeleyAbstract Sulfate reducing bacteria (SRB) play an importantin the sulfate-reducing bacteria Desulfovibrio sp." FEMS

  9. Reduce Pumping Costs Through Optimum Pipe Sizing | Department...

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

    Reduce Pumping Costs Through Optimum Pipe Sizing Reduce Pumping Costs Through Optimum Pipe Sizing This tip sheet discusses how to reduce pumping system costs through optimum pipe...

  10. Infrared photoemitting diode having reduced work function

    DOE Patents [OSTI]

    Hirschfeld, T.B.

    1982-05-06

    In electro-optical detectors which include as elements a photoemitting photocathode and anode, a photoemitting diode is fabricated which lowers the diode's work function, thus reducing the cooling requirement typically needed for this type of device. The work function is reduced by sandwiching between the photocathode and anode a liquid meidum of the formula NR/sub 3/ and having an electron affinity for the electrons of the photocathode, which liquid medium permits free electrons leaving the photocathode to remain as stable solvated species in the liquid medium. Thus, highly light-absorbent, and therefore thin, metallic layers can be used for detection, thereby reducing dark current at a given temperature, with a consequent reduction in cooling requirements at constant detector performance.

  11. Process for reducing beta activity in uranium

    DOE Patents [OSTI]

    Briggs, G.G.; Kato, T.R.; Schonegg, E.

    1985-04-11

    This invention is a method for lowering the beta radiation hazards associated with the casting of uranium. The method reduces the beta radiation emitted from the as-cast surfaces of uranium ingots. The method also reduces the amount of beta radiation emitters retained on the interiors of the crucibles that have been used to melt the uranium charges and which undergone cleaning in a remote handling facility. The lowering of the radioactivity is done by scavenging the beta emitters from the molten uranium with a molten mixture containing the fluorides of magnesium and calcium. The method provides a means of collection and disposal of the beta emitters in a manner that reduces radiation exposure to operating personnel in the work area where the ingots are cast and processed. 5 tabs.

  12. Process for reducing beta activity in uranium

    DOE Patents [OSTI]

    Briggs, Gifford G. (Cincinnatti, OH); Kato, Takeo R. (Cincinnatti, OH); Schonegg, Edward (Cleves, OH)

    1986-01-01

    This invention is a method for lowering the beta radiation hazards associated with the casting of uranium. The method reduces the beta radiation emitted from the as-cast surfaces of uranium ingots. The method also reduces the amount of beta radiation emitters retained on the interiors of the crucibles that have been used to melt the uranium charges and which have undergone cleaning in a remote handling facility. The lowering of the radioactivity is done by scavenging the beta emitters from the molten uranium with a molten mixture containing the fluorides of magnesium and calcium. The method provides a means of collection and disposal of the beta emitters in a manner that reduces radiation exposure to operating personnel in the work area where the ingots are cast and processed.

  13. Reducing Greenhouse Gas Emissions for Climate Stabilization

    E-Print Network [OSTI]

    Thomas, David D.

    Reducing Greenhouse Gas Emissions for Climate Stabilization: Framing Regional Options L A U R A S C reduction of global greenhouse gas (GHG) emissions by as much as 80% by 2050. Subnational efforts to cut The call to cut global greenhouse gas (GHG) emissions by up to 80% below 2000 levels, which researchers

  14. Reduced models of algae growth Heikki Haario,

    E-Print Network [OSTI]

    Bardsley, John

    Reduced models of algae growth Heikki Haario, Leonid Kalachev Marko Laine, Lappeenranta University of the phenomena studied. Here, in the case of algae growth modelling, we show how a systematic model reduction may: Algae growth modelling, asymptotic methods, model reduction, MCMC, Adaptive Markov chain Monte Carlo. 1

  15. WASTE DESCRIPTION TYPE OF PROJECT POUNDS REDUCED,

    E-Print Network [OSTI]

    for reduction in mixed waste generation Pump Oil Substitution 51 Hazardous Waste / Industrial Waste $3,520 $6 with the subsequent clean up costs ($15,000). Hydraulic Oil Product Substitution 3,000 Industrial Waste $26,000 $0 $26WASTE DESCRIPTION TYPE OF PROJECT POUNDS REDUCED, REUSED, RECYCLED OR CONSERVED IN 2003 WASTE TYPE

  16. WASTE DESCRIPTION TYPE OF PROJECT POUNDS REDUCED,

    E-Print Network [OSTI]

    reflect avoided waste disposal costs and lower material purchase costs ($6000) Hydraulic Oil ProductWASTE DESCRIPTION TYPE OF PROJECT POUNDS REDUCED, REUSED, RECYCLED OR CONSERVED IN 2002 WASTE TYPE DESCRIPTION DETAILS * Electrophoretic Mini-Gels Microscale Chemical Use 2,200 Hazardous Waste - Lab Pack $10

  17. WASTE DESCRIPTION TYPE OF PROJECT POUNDS REDUCED,

    E-Print Network [OSTI]

    . Removed grit and sludge are mixed with the waste oil. Photon-counting spectrofluorimeter Substitution 54 or composted at the stump dump. Plant Engineering grounds vehicle wash system * Waste minimization 8,000 OilsWASTE DESCRIPTION TYPE OF PROJECT POUNDS REDUCED, REUSED, RECYCLED OR CONSERVED IN 2007 WASTE TYPE

  18. Reduced No.sub.x combustion method

    DOE Patents [OSTI]

    Delano, Mark A. (Briarcliff Manor, NY)

    1991-01-01

    A combustion method enabling reduced NO.sub.x formation wherein fuel and oxidant are separately injected into a combustion zone in a defined velocity relation, combustion gases are aspirated into the oxidant stream prior to intermixture with the fuel, and the fuel is maintained free from contact with oxygen until the intermixture.

  19. Light gas gun with reduced timing jitter

    DOE Patents [OSTI]

    Laabs, G.W.; Funk, D.J.; Asay, B.W.

    1998-06-09

    Gas gun with reduced timing jitter is disclosed. A gas gun having a prepressurized projectile held in place with a glass rod in compression is described. The glass rod is destroyed with an explosive at a precise time which allows a restraining pin to be moved and free the projectile. 4 figs.

  20. Light gas gun with reduced timing jitter

    DOE Patents [OSTI]

    Laabs, Gary W. (Los Alamos, NM); Funk, David J. (Los Alamos, NM); Asay, Blaine W. (Los Alamos, NM)

    1998-01-01

    Gas gun with reduced timing jitter. A gas gun having a prepressurized projectile held in place with a glass rod in compression is described. The glass rod is destroyed with an explosive at a precise time which allows a restraining pin to be moved and free the projectile.

  1. Projection screen having reduced ambient light scattering

    DOE Patents [OSTI]

    Sweatt, William C. (Albuquerque, NM)

    2010-05-11

    An apparatus and method for improving the contrast between incident projected light and ambient light reflected from a projection screen are described. The efficiency of the projection screen for reflection of the projected light remains high, while permitting the projection screen to be utilized in a brightly lighted room. Light power requirements from the projection system utilized may be reduced.

  2. Reducing Food Safety Risks in Community Gardens

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    Reducing Food Safety Risks in Community Gardens Creating and maintaining community and school gardens has been identified as an effective strategy to increase healthy food awareness and consumption in the U.S. since 1990. In commercial food production, employing a set of risk-reduction steps -- known

  3. SATURATION COMPENSATING INPUT SHAPERS FOR REDUCING VIBRATION

    E-Print Network [OSTI]

    Singhose, William

    input shaper and feedback controller was successfully implemented by Drapeau and Wang on a five-bar The Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta, GA 30332, USA ABSTRACT Input shaping can be used to eliminate or greatly reduce residual vibration of flexible mechanical

  4. Reduced MHD in Nearly Potential Magnetic Fields

    E-Print Network [OSTI]

    Strauss, Hank

    Reduced MHD in Nearly Potential Magnetic Fields H.R. Strauss Courant Institute of Mathematical that the magnetic field is close to a potential field. The potential field can have an arbitrary three dimensional. It is also the case in solar and stellar coronal magnetic fields, and in regions of the geomagnetic field

  5. Decreased Funding Reduces Orders Timeline Citing the impact of reduced funding, Navy

    E-Print Network [OSTI]

    Decreased Funding Reduces Orders Timeline Citing the impact of reduced funding, Navy announced Feb that allows for continuous normal operations while a final budget is approved. Navy Personnel Command the orders are released. Navy has utilized this prioritization strategy in previous PCS funding

  6. Quantum cryptographic system with reduced data loss

    DOE Patents [OSTI]

    Lo, H.K.; Chau, H.F.

    1998-03-24

    A secure method for distributing a random cryptographic key with reduced data loss is disclosed. Traditional quantum key distribution systems employ similar probabilities for the different communication modes and thus reject at least half of the transmitted data. The invention substantially reduces the amount of discarded data (those that are encoded and decoded in different communication modes e.g. using different operators) in quantum key distribution without compromising security by using significantly different probabilities for the different communication modes. Data is separated into various sets according to the actual operators used in the encoding and decoding process and the error rate for each set is determined individually. The invention increases the key distribution rate of the BB84 key distribution scheme proposed by Bennett and Brassard in 1984. Using the invention, the key distribution rate increases with the number of quantum signals transmitted and can be doubled asymptotically. 23 figs.

  7. Methods of reducing vehicle aerodynamic drag

    SciTech Connect (OSTI)

    Sirenko V.; Rohatgi U.

    2012-07-08

    A small scale model (length 1710 mm) of General Motor SUV was built and tested in the wind tunnel for expected wind conditions and road clearance. Two passive devices, rear screen which is plate behind the car and rear fairing where the end of the car is aerodynamically extended, were incorporated in the model and tested in the wind tunnel for different wind conditions. The conclusion is that rear screen could reduce drag up to 6.5% and rear fairing can reduce the drag by 26%. There were additional tests for front edging and rear vortex generators. The results for drag reduction were mixed. It should be noted that there are aesthetic and practical considerations that may allow only partial implementation of these or any drag reduction options.

  8. Cascaded Microinverter PV System for Reduced Cost

    SciTech Connect (OSTI)

    Bellus, Daniel R.; Ely, Jeffrey A.

    2013-04-29

    In this project, a team led by Delphi will develop and demonstrate a novel cascaded photovoltaic (PV) inverter architecture using advanced components. This approach will reduce the cost and improve the performance of medium and large-sized PV systems. The overall project objective is to develop, build, and test a modular 11-level cascaded three-phase inverter building block for photovoltaic applications and to develop and analyze the associated commercialization plan. The system will be designed to utilize photovoltaic panels and will supply power to the electric grid at 208 VAC, 60 Hz 3-phase. With the proposed topology, three inverters, each with an embedded controller, will monitor and control each of the cascade sections, reducing costs associated with extra control boards. This report details the final disposition on this project.

  9. Device for reducing vehicle aerodynamic resistance

    DOE Patents [OSTI]

    Graham, Sean C.

    2006-08-22

    A device for reducing vehicle aerodynamic resistance for vehicles having a generally rectangular body disposed above rear wheels, comprising a plurality of load bearing struts attached to the bottom of the rectangular body adjacent its sides, a plurality of opposing flat sheets attached to the load bearing struts, and angled flaps attached to the lower edge of the opposing sheets defining an obtuse angle with the opposing flat sheets extending inwardly with respect to the sides of the rectangular body to a predetermined height above the ground, which, stiffen the opposing flat sheets, bend to resist damage when struck by the ground, and guide airflow around the rear wheels of the vehicle to reduce its aerodynamic resistance when moving.

  10. Quantum cryptographic system with reduced data loss

    DOE Patents [OSTI]

    Lo, Hoi-Kwong (1309, Low Block, Lei Moon House Ap Lei Chau Estate, Hong Kong, HK); Chau, Hoi Fung (Flat C, 42nd Floor, Tower 1, University Heights 23 Pokfield Road, Pokfulam, Hong Kong, HK)

    1998-01-01

    A secure method for distributing a random cryptographic key with reduced data loss. Traditional quantum key distribution systems employ similar probabilities for the different communication modes and thus reject at least half of the transmitted data. The invention substantially reduces the amount of discarded data (those that are encoded and decoded in different communication modes e.g. using different operators) in quantum key distribution without compromising security by using significantly different probabilities for the different communication modes. Data is separated into various sets according to the actual operators used in the encoding and decoding process and the error rate for each set is determined individually. The invention increases the key distribution rate of the BB84 key distribution scheme proposed by Bennett and Brassard in 1984. Using the invention, the key distribution rate increases with the number of quantum signals transmitted and can be doubled asymptotically.

  11. Device for reducing vehicle aerodynamic resistance

    DOE Patents [OSTI]

    Graham, Sean C.

    2005-02-15

    A device for a vehicle with a pair of swinging rear doors, which converts flat sheets of pliable material hinged to the sides of the vehicle adjacent the rear thereof into effective curved airfoils that reduce the aerodynamic resistance of the vehicle, when the doors are closed by hand, utilizing a plurality of stiffeners disposed generally parallel to the doors and affixed to the sheets and a plurality of collapsible tension bearings struts attached to each stiffener and the adjacent door.

  12. Renewable Energy Can Help Reduce Oil Dependency

    ScienceCinema (OSTI)

    Arvizu, Dan

    2013-05-29

    In a speech to the Economic Club of Kansas City on June 23, 2010, NREL Director Dan Arvizu takes a realistic look at how renewable energy can help reduce America's dependence on oil, pointing out that the country gets as much energy from renewable sources now as it does from offshore oil production. For a transcript, visit http://www.nrel.gov/director/pdfs/energy_overview_06_10.pdf

  13. Renewable Energy Can Help Reduce Oil Dependency

    SciTech Connect (OSTI)

    Arvizu, Dan

    2010-01-01

    In a speech to the Economic Club of Kansas City on June 23, 2010, NREL Director Dan Arvizu takes a realistic look at how renewable energy can help reduce America's dependence on oil, pointing out that the country gets as much energy from renewable sources now as it does from offshore oil production. For a transcript, visit http://www.nrel.gov/director/pdfs/energy_overview_06_10.pdf

  14. Reducing Photovoltaic Costs | 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 FitsProject Developsfor UCNIEnvironmental ImpactReducing Non-Hardware Costs

  15. THE EFFECTS OF VARIABLE-MOMENTARY DIFFERENTIAL REINFORCEMENT ON TODDLER LOCATION PRIOR TO MEALS

    E-Print Network [OSTI]

    Rodriguez, Nicole Monique

    2007-12-14

    Adoptability of classroom interventions should be considered when developing techniques for classroom management (Fantuzzo & Atkins, 1992). In the present study, we incorporated several components designed to enhance the practicality of a classroom...

  16. Zigzag laser with reduced optical distortion

    DOE Patents [OSTI]

    Albrecht, Georg F. (Livermore, CA); Comaskey, Brian (Stockton, CA); Sutton, Steven B. (Manteca, CA)

    1994-01-01

    The architecture of the present invention has been driven by the need to solve the beam quality problems inherent in Brewster's angle tipped slab lasers. The entrance and exit faces of a solid state slab laser are cut perpendicular with respect to the pump face, thus intrinsically eliminating distortion caused by the unpumped Brewster's angled faces. For a given zigzag angle, the residual distortions inherent in the remaining unpumped or lightly pumped ends may be reduced further by tailoring the pump intensity at these ends.

  17. Zigzag laser with reduced optical distortion

    DOE Patents [OSTI]

    Albrecht, G.F.; Comaskey, B.; Sutton, S.B.

    1994-04-19

    The architecture of the present invention has been driven by the need to solve the beam quality problems inherent in Brewster's angle tipped slab lasers. The entrance and exit faces of a solid state slab laser are cut perpendicular with respect to the pump face, thus intrinsically eliminating distortion caused by the unpumped Brewster's angled faces. For a given zigzag angle, the residual distortions inherent in the remaining unpumped or lightly pumped ends may be reduced further by tailoring the pump intensity at these ends. 11 figures.

  18. Distributed Bragg Reflectors With Reduced Optical Absorption

    DOE Patents [OSTI]

    Klem, John F. (Albuquerque, NM)

    2005-08-16

    A new class of distributed Bragg reflectors has been developed. These distributed Bragg reflectors comprise interlayers positioned between sets of high-index and low-index quarter-wave plates. The presence of these interlayers is to reduce photon absorption resulting from spatially indirect photon-assisted electronic transitions between the high-index and low-index quarter wave plates. The distributed Bragg reflectors have applications for use in vertical-cavity surface-emitting lasers for use at 1.55 .mu.m and at other wavelengths of interest.

  19. Method and apparatus for reducing mixed waste

    DOE Patents [OSTI]

    Elliott, Michael L. (Kennewick, WA); Perez, Jr., Joseph M. (Richland, WA); Chapman, Chris C. (Richland, WA); Peters, Richard D. (Pasco, WA)

    1995-01-01

    The present invention is a method and apparatus for in-can waste reduction. The method is mixing waste with combustible material prior to placing the waste into a waste reduction vessel. The combustible portion is ignited, thereby reducing combustible material to ash and non-combustible material to a slag. Further combustion or heating may be used to sinter or melt the ash. The apparatus is a waste reduction vessel having receiving canister connection means on a first end, and a waste/combustible mixture inlet on a second end. An oxygen supply is provided to support combustion of the combustible mixture.

  20. Schrödinger Spacetimes with Screen and Reduced Entanglement

    E-Print Network [OSTI]

    Harvendra Singh

    2014-10-15

    We study a particular class of type II string vacua which become Schr\\"odinger like spacetime in the IR region but are conformally AdS in asymptotic UV region. These solutions are found to possess some unique properties such as the presence of a spacetime `screen'. This Schr\\"odinger (spacetime) screen is however very different from a black-hole horizon. It requires the presence of finite chemical potential and a negative charge density in the Schr\\"odinger CFT. We find that these vacua give rise to reduced entanglement entropy as compared to Lifshitz-AdS counterpart, perhaps due to the screening effects.

  1. Reducing Livestock Losses To Toxic Plants 

    E-Print Network [OSTI]

    McGinty, Allan; Machen, Richard V.

    2000-04-25

    AgriculturalExtensionService The Texas A&M University System Reducing Livestock Losses to Toxic Plants B-1499 Sand Shinnery L Perennial Broomweed Texas Agricultural Extension Service a71 Zerle L. Carpenter, Director a71 The Texas A&M University System a71 College Station, Texas Tableof... in diagnosis is to determine *Extension range specialist and Extension livestock- specialist, The Texas A&M University System. whether the cause is plant poisoning or in- fectious disease. To do so it is necessary to carefully observe symptoms exhibited by af...

  2. Recommendations for reducing ambiguity in written procedures.

    SciTech Connect (OSTI)

    Matzen, Laura E.

    2009-11-01

    Previous studies in the nuclear weapons complex have shown that ambiguous work instructions (WIs) and operating procedures (OPs) can lead to human error, which is a major cause for concern. This report outlines some of the sources of ambiguity in written English and describes three recommendations for reducing ambiguity in WIs and OPs. The recommendations are based on commonly used research techniques in the fields of linguistics and cognitive psychology. The first recommendation is to gather empirical data that can be used to improve the recommended word lists that are provided to technical writers. The second recommendation is to have a review in which new WIs and OPs and checked for ambiguities and clarity. The third recommendation is to use self-paced reading time studies to identify any remaining ambiguities before the new WIs and OPs are put into use. If these three steps are followed for new WIs and OPs, the likelihood of human errors related to ambiguity could be greatly reduced.

  3. How Damage Diversification Can Reduce Systemic Risk

    E-Print Network [OSTI]

    Burkholz, Rebekka; Schweitzer, Frank

    2015-01-01

    We consider the problem of risk diversification in complex networks. Nodes represent e.g. financial actors, whereas weighted links represent e.g. financial obligations (credits/debts). Each node has a risk to fail because of losses resulting from defaulting neighbors, which may lead to large failure cascades. Classical risk diversification strategies usually neglect network effects and therefore suggest that risk can be reduced if possible losses (i.e., exposures) are split among many neighbors (exposure diversification, ED). But from a complex networks perspective diversification implies higher connectivity of the system as a whole which can also lead to increasing failure risk of a node. To cope with this, we propose a different strategy (damage diversification, DD), i.e. the diversification of losses that are imposed on neighboring nodes as opposed to losses incurred by the node itself. Here, we quantify the potential of DD to reduce systemic risk in comparison to ED. For this, we develop a branching proce...

  4. Hybrid reduced order modeling for assembly calculations

    SciTech Connect (OSTI)

    Bang, Y.; Abdel-Khalik, H. S.; Jessee, M. A.; Mertyurek, U.

    2013-07-01

    While the accuracy of assembly calculations has considerably improved due to the increase in computer power enabling more refined description of the phase space and use of more sophisticated numerical algorithms, the computational cost continues to increase which limits the full utilization of their effectiveness for routine engineering analysis. Reduced order modeling is a mathematical vehicle that scales down the dimensionality of large-scale numerical problems to enable their repeated executions on small computing environment, often available to end users. This is done by capturing the most dominant underlying relationships between the model's inputs and outputs. Previous works demonstrated the use of the reduced order modeling for a single physics code, such as a radiation transport calculation. This manuscript extends those works to coupled code systems as currently employed in assembly calculations. Numerical tests are conducted using realistic SCALE assembly models with resonance self-shielding, neutron transport, and nuclides transmutation/depletion models representing the components of the coupled code system. (authors)

  5. Reducing Energy Demand in Buildings Through State Energy Codes...

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

    Reducing Energy Demand in Buildings Through State Energy Codes Reducing Energy Demand in Buildings Through State Energy Codes Building Codes Project for the 2013 Building...

  6. Utilization of UV or EB Curing Technology to Significantly Reduce...

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

    Curing Technology to Significantly Reduce Costs and VOCs in the Manufacture of Lithium-Ion Battery Electrodes Utilization of UV or EB Curing Technology to Significantly Reduce...

  7. On-Bill Financing: Reducing Cost Barriers to Energy Efficiency...

    Office of Environmental Management (EM)

    On-Bill Financing: Reducing Cost Barriers to Energy Efficiency Improvements (201) On-Bill Financing: Reducing Cost Barriers to Energy Efficiency Improvements (201) October 8...

  8. White House Announces New Executive Order To Reduce Greenhouse...

    Energy Savers [EERE]

    White House Announces New Executive Order To Reduce Greenhouse Gas Emissions in the Federal Government White House Announces New Executive Order To Reduce Greenhouse Gas Emissions...

  9. Project Profile: Reducing the Cost of Thermal Energy Storage...

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

    Reducing the Cost of Thermal Energy Storage for Parabolic Trough Solar Power Plants Project Profile: Reducing the Cost of Thermal Energy Storage for Parabolic Trough Solar Power...

  10. Replace Pressure-Reducing Valves with Backpressure Turbogenerators...

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

    distribution system to let down or reduce its pressure. A noncondensing or backpressure steam turbine can perform the same pressure-reducing function as a PRV while converting...

  11. Wind Turbine Towers Establish New Height Standards and Reduce...

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

    Turbine Towers Establish New Height Standards and Reduce Cost of Wind Energy Wind Turbine Towers Establish New Height Standards and Reduce Cost of Wind Energy Case study that...

  12. Reducing Lubricant Ash Impact on Exhaust Aftertreatment with...

    Energy Savers [EERE]

    Reducing Lubricant Ash Impact on Exhaust Aftertreatment with a Oil Conditioning Filter Reducing Lubricant Ash Impact on Exhaust Aftertreatment with a Oil Conditioning Filter Under...

  13. Milestone Reached: New Process Reduces Cost and Risk of Biofuel...

    Energy Savers [EERE]

    Milestone Reached: New Process Reduces Cost and Risk of Biofuel Production from Bio-Oil Upgrading Milestone Reached: New Process Reduces Cost and Risk of Biofuel Production from...

  14. Unconventional Oil and Gas Projects Help Reduce Environmental...

    Office of Environmental Management (EM)

    Unconventional Oil and Gas Projects Help Reduce Environmental Impact of Development Unconventional Oil and Gas Projects Help Reduce Environmental Impact of Development April 17,...

  15. Bush Administration Establishes Program to Reduce Foreign Oil...

    Energy Savers [EERE]

    Bush Administration Establishes Program to Reduce Foreign Oil Dependency, Greenhouse Gases Bush Administration Establishes Program to Reduce Foreign Oil Dependency, Greenhouse...

  16. Improved System Performance and Reduced Cost of a Fuel Reformer...

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

    Reduced Cost of a Fuel Reformer, LNT, and SCR Aftertreatment System Meeting Emissions Useful Life Requirement Improved System Performance and Reduced Cost of a Fuel Reformer, LNT,...

  17. Wind Program Manufacturing Research Advances Processes and Reduces...

    Energy Savers [EERE]

    Wind Program Manufacturing Research Advances Processes and Reduces Costs Wind Program Manufacturing Research Advances Processes and Reduces Costs March 31, 2014 - 11:22am Addthis...

  18. A Reduced Mechanism for Biodiesel Surrogates with Low Temperature...

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

    Reduced Mechanism for Biodiesel Surrogates with Low Temperature Chemistry Title A Reduced Mechanism for Biodiesel Surrogates with Low Temperature Chemistry Publication Type...

  19. Low-Cost Packaged CHP System with Reduced Emissions - Presentation...

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

    Low-Cost Packaged CHP System with Reduced Emissions - Presentation by Cummins Power Generation, June 2011 Low-Cost Packaged CHP System with Reduced Emissions - Presentation by...

  20. Metal and Glass Manufacturers Reduce Costs by Increasing Energy...

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

    Metal and Glass Manufacturers Reduce Costs by Increasing Energy Efficiency in Process Heating Systems Metal and Glass Manufacturers Reduce Costs by Increasing Energy Efficiency in...

  1. Special Feature: Reducing Energy Costs with Better Batteries

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

    Reducing Energy Costs with Better Batteries Special Feature: Reducing Energy Costs with Better Batteries September 9, 2013 Contact: Linda Vu, +1 510 495 2402, lvu@lbl.gov...

  2. Next-Generation Power Electronics: Reducing Energy Waste and...

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

    Next-Generation Power Electronics: Reducing Energy Waste and Powering the Future Next-Generation Power Electronics: Reducing Energy Waste and Powering the Future January 15, 2014 -...

  3. Improved Monitor Design and Configuration for Reducing Reported...

    Office of Environmental Management (EM)

    Improved Monitor Design and Configuration for Reducing Reported Tritium Discharges from the Orphee Research Reactor Improved Monitor Design and Configuration for Reducing Reported...

  4. Petroleum Reduction Strategies to Reduce Vehicle Miles Traveled

    Broader source: Energy.gov [DOE]

    For reducing greenhouse gas emissions, the table below describes petroleum reduction strategies to reduce vehicle miles traveled, as well as guidance and best practices for each strategy.

  5. Reduce Radiation Losses from Heating Equipment; Industrial Technologie...

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

    in which opening size cannot be reduced, you can use flexible materials such as ceramic strips, chains, or ceramic textiles as "curtains." These generally reduce heat loss...

  6. Helping Alaska Native Communities Reduce Their Energy Costs ...

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

    Helping Alaska Native Communities Reduce Their Energy Costs Helping Alaska Native Communities Reduce Their Energy Costs May 3, 2013 - 12:50pm Addthis The Energy Department is...

  7. Reduced Call-Backs with High Performance Production Builders...

    Energy Savers [EERE]

    Reduced Call-Backs with High Performance Production Builders - Building America Top Innovation Reduced Call-Backs with High Performance Production Builders - Building America Top...

  8. Increasing LTC Engine Efficiency by Reducing Pressure-Oscillation...

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

    Increasing LTC Engine Efficiency by Reducing Pressure-Oscillation-Related Heat Transfer Losses Increasing LTC Engine Efficiency by Reducing Pressure-Oscillation-Related Heat...

  9. Reducing the negative human-health impacts of bioenergy crop...

    Office of Scientific and Technical Information (OSTI)

    Reducing the negative human-health impacts of bioenergy crop emissions through region-specific crop selection Citation Details In-Document Search Title: Reducing the negative...

  10. Radio Frequency Diesel Particulate Filter Sensor Reduces Fuel...

    Office of Environmental Management (EM)

    Radio Frequency Diesel Particulate Filter Sensor Reduces Fuel Consumption, Wins R&D 100 Award Radio Frequency Diesel Particulate Filter Sensor Reduces Fuel Consumption, Wins R&D...

  11. Electrospray ion source with reduced analyte electrochemistry

    DOE Patents [OSTI]

    Kertesz, Vilmos [Knoxville, TN; Van Berkel, Gary [Clinton, TN

    2011-08-23

    An electrospray ion (ESI) source and method capable of ionizing an analyte molecule without oxidizing or reducing the analyte of interest. The ESI source can include an emitter having a liquid conduit, a working electrode having a liquid contacting surface, a spray tip, a secondary working electrode, and a charge storage coating covering partially or fully the liquid contacting surface of the working electrode. The liquid conduit, the working electrode and the secondary working electrode can be in liquid communication. The electrospray ion source can also include a counter electrode proximate to, but separated from, said spray tip. The electrospray ion source can also include a power system for applying a voltage difference between the working electrodes and a counter-electrode. The power system can deliver pulsed voltage changes to the working electrodes during operation of said electrospray ion source to minimize the surface potential of the charge storage coating.

  12. Device for reducing vehicle aerodynamic resistance

    DOE Patents [OSTI]

    Graham, Sean C.

    2006-03-07

    A device for reducing vehicle aerodynamic resistance for vehicles having a generally rectangular flat front face comprising a plurality of load bearing struts of a predetermined size attached to the flat front face adjacent the sides and top thereof, a pair of pliable opposing flat sheets having an outside edge portion attached to the flat front face adjacent the sides thereof and an upper edge with a predetermined curve; the opposing flat sheets being bent and attached to the struts to form effective curved airfoil shapes, and a top pliable flat sheet disposed adjacent the top of the flat front face and having predetermined curved side edges, which, when the top sheet is bent and attached to the struts to form an effective curved airfoil shape, mate with the curved upper edges of the opposing sheets to complete the aerodynamic device.

  13. Nanotexturing of surfaces to reduce melting point.

    SciTech Connect (OSTI)

    Garcia, Ernest J.; Zubia, David; Mireles, Jose; Marquez, Noel; Quinones, Stella

    2011-11-01

    This investigation examined the use of nano-patterned structures on Silicon-on-Insulator (SOI) material to reduce the bulk material melting point (1414 C). It has been found that sharp-tipped and other similar structures have a propensity to move to the lower energy states of spherical structures and as a result exhibit lower melting points than the bulk material. Such a reduction of the melting point would offer a number of interesting opportunities for bonding in microsystems packaging applications. Nano patterning process capabilities were developed to create the required structures for the investigation. One of the technical challenges of the project was understanding and creating the specialized conditions required to observe the melting and reshaping phenomena. Through systematic experimentation and review of the literature these conditions were determined and used to conduct phase change experiments. Melting temperatures as low as 1030 C were observed.

  14. Costs to reduce sulfur dioxide emissions

    SciTech Connect (OSTI)

    None

    1982-03-01

    Central to the resolution of the acid rain issue are debates about the costs and benefits of controlling man-made emissions of chemicals that may cause acid rain. In this briefing, the position of those who are calling for immediate action and implicating coal-fired powerplants as the cause of the problem is examined. The costs of controlling sulfur dioxide emissions using alternative control methods available today are presented. No attempt is made to calculate the benefits of reducing these emissions since insufficient information is available to provide even a rough estimate. Information is presented in two steps. First, costs are presented as obtained through straightforward calculations based upon simplifying but realistic assumptions. Next, the costs of sulfur dioxide control obtained through several large-scale analyses are presented, and these results are compared with those obtained through the first method.

  15. Multiple hearth furnace for reducing iron oxide

    DOE Patents [OSTI]

    Brandon, Mark M. (Charlotte, NC); True, Bradford G. (Charlotte, NC)

    2012-03-13

    A multiple moving hearth furnace (10) having a furnace housing (11) with at least two moving hearths (20) positioned laterally within the furnace housing, the hearths moving in opposite directions and each moving hearth (20) capable of being charged with at least one layer of iron oxide and carbon bearing material at one end, and being capable of discharging reduced material at the other end. A heat insulating partition (92) is positioned between adjacent moving hearths of at least portions of the conversion zones (13), and is capable of communicating gases between the atmospheres of the conversion zones of adjacent moving hearths. A drying/preheat zone (12), a conversion zone (13), and optionally a cooling zone (15) are sequentially positioned along each moving hearth (30) in the furnace housing (11).

  16. Method of data communications with reduced latency

    DOE Patents [OSTI]

    Blocksome, Michael A; Parker, Jeffrey J

    2013-11-05

    Data communications with reduced latency, including: writing, by a producer, a descriptor and message data into at least two descriptor slots of a descriptor buffer, the descriptor buffer comprising allocated computer memory segmented into descriptor slots, each descriptor slot having a fixed size, the descriptor buffer having a header pointer that identifies a next descriptor slot to be processed by a DMA controller, the descriptor buffer having a tail pointer that identifies a descriptor slot for entry of a next descriptor in the descriptor buffer; recording, by the producer, in the descriptor a value signifying that message data has been written into descriptor slots; and setting, by the producer, in dependence upon the recorded value, a tail pointer to point to a next open descriptor slot.

  17. Electrospray ion source with reduced analyte electrochemistry

    DOE Patents [OSTI]

    Kertesz, Vilmos; Van Berkel, Gary J

    2013-07-30

    An electrospray ion (ESI) source and method capable of ionizing an analyte molecule without oxidizing or reducing the analyte of interest. The ESI source can include an emitter having a liquid conduit, a working electrode having a liquid contacting surface, a spray tip, a secondary working electrode, and a charge storage coating covering partially or fully the liquid contacting surface of the working electrode. The liquid conduit, the working electrode and the secondary working electrode can be in liquid communication. The electrospray ion source can also include a counter electrode proximate to, but separated from, said spray tip. The electrospray ion source can also include a power system for applying a voltage difference between the working electrodes and a counter-electrode. The power system can deliver pulsed voltage changes to the working electrodes during operation of said electrospray ion source to minimize the surface potential of the charge storage coating.

  18. Reducing the losses of optical metamaterials

    SciTech Connect (OSTI)

    Fang, Anan

    2010-12-15

    The field of metamaterials is driven by fascinating and far-reaching theoretical visions, such as perfect lenses, invisibility cloaking, and enhanced optical nonlinearities. However, losses have become the major obstacle towards real world applications in the optical regime. Reducing the losses of optical metamaterials becomes necessary and extremely important. In this thesis, two approaches are taken to reduce the losses. One is to construct an indefinite medium. Indefinite media are materials where not all the principal components of the permittivity and permeability tensors have the same sign. They do not need the resonances to achieve negative permittivity, {var_epsilon}. So, the losses can be comparatively small. To obtain indefinite media, three-dimensional (3D) optical metallic nanowire media with different structures are designed. They are numerically demonstrated that they are homogeneous effective indefinite anisotropic media by showing that their dispersion relations are hyperbolic. Negative group refraction and pseudo focusing are observed. Another approach is to incorporate gain into metamaterial nanostructures. The nonlinearity of gain is included by a generic four-level atomic model. A computational scheme is presented, which allows for a self-consistent treatment of a dispersive metallic photonic metamaterial coupled to a gain material incorporated into the nanostructure using the finite-difference time-domain (FDTD) method. The loss compensations with gain are done for various structures, from 2D simplified models to 3D realistic structures. Results show the losses of optical metamaterials can be effectively compensated by gain. The effective gain coefficient of the combined system can be much larger than the bulk gain counterpart, due to the strong local-field enhancement.

  19. Reduced Emission above Sunspots Reduced Coronal Emission above Large Isolated Sunspots

    E-Print Network [OSTI]

    Ryabov, Boris I.

    of reduced soft X-ray and microwave emission in five large isolated sunspots. The Nobeyama Radioheliograph 17 GHz observations reveal a local depression of microwave brightness in the peripheral area fields of solar active regions (ARs) confine plasma flows to be along field lines and thereby have

  20. Reducing the Consequences of a Nuclear Detonation.

    SciTech Connect (OSTI)

    Buddemeier, B R

    2007-11-09

    The 2002 National Strategy to Combat Weapons of Mass Destruction states that 'the United States must be prepared to respond to the use of WMD against our citizens, our military forces, and those of friends and allies'. Scenario No.1 of the 15 Department of Homeland Security national planning scenarios is an improvised nuclear detonation in the national capitol region. An effective response involves managing large-scale incident response, mass casualty, mass evacuation, and mass decontamination issues. Preparedness planning activities based on this scenario provided difficult challenges in time critical decision making and managing a large number of casualties within the hazard area. Perhaps even more challenging is the need to coordinate a large scale response across multiple jurisdictions and effectively responding with limited infrastructure and resources. Federal response planning continues to make improvements in coordination and recommending protective actions, but much work remains. The most critical life-saving activity depends on actions taken in the first few minutes and hours of an event. The most effective way to reduce the enormous national and international social and economic disruptions from a domestic nuclear explosion is through planning and rapid action, from the individual to the federal response. Anticipating response resources for survivors based on predicted types and distributions of injuries needs to be addressed.

  1. Exploiting Data Similarity to Reduce Memory Footprints

    SciTech Connect (OSTI)

    Biswas, S; de Supinski, B R; Schulz, M; Franklin, D; Sherwood, T; Chong, F T

    2011-01-28

    Memory size has long limited large-scale applications on high-performance computing (HPC) systems. Since compute nodes frequently do not have swap space, physical memory often limits problem sizes. Increasing core counts per chip and power density constraints, which limit the number of DIMMs per node, have exacerbated this problem. Further, DRAM constitutes a significant portion of overall HPC system cost. Therefore, instead of adding more DRAM to the nodes, mechanisms to manage memory usage more efficiently - preferably transparently - could increase effective DRAM capacity and thus the benefit of multicore nodes for HPC systems. MPI application processes often exhibit significant data similarity. These data regions occupy multiple physical locations across the individual rank processes within a multicore node and thus offer a potential savings in memory capacity. These regions, primarily residing in heap, are dynamic, which makes them difficult to manage statically. Our novel memory allocation library, SBLLmalloc, automatically identifies identical memory blocks and merges them into a single copy. SBLLmalloc does not require application or OS changes since we implement it as a user-level library. Overall, we demonstrate that SBLLmalloc reduces the memory footprint of a range of MPI applications by 32.03% on average and up to 60.87%. Further, SBLLmalloc supports problem sizes for IRS over 21.36% larger than using standard memory management techniques, thus significantly increasing effective system size. Similarly, SBLLmalloc requires 43.75% fewer nodes than standard memory management techniques to solve an AMG problem.

  2. Method for reducing pressure drop through filters, and filter exhibiting reduced pressure drop

    DOE Patents [OSTI]

    Sappok, Alexander; Wong, Victor

    2014-11-18

    Methods for generating and applying coatings to filters with porous material in order to reduce large pressure drop increases as material accumulates in a filter, as well as the filter exhibiting reduced and/or more uniform pressure drop. The filter can be a diesel particulate trap for removing particulate matter such as soot from the exhaust of a diesel engine. Porous material such as ash is loaded on the surface of the substrate or filter walls, such as by coating, depositing, distributing or layering the porous material along the channel walls of the filter in an amount effective for minimizing or preventing depth filtration during use of the filter. Efficient filtration at acceptable flow rates is achieved.

  3. Reduce Hot Water Use for Energy Savings | Department of Energy

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

    Reduce Hot Water Use for Energy Savings Reduce Hot Water Use for Energy Savings June 15, 2012 - 5:51pm Addthis Low-flow fixtures and showerheads can achieve water savings of...

  4. Metal and Glass Manufacturers Reduce Costs by Increasing Energy...

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

    of these opportunities can be implemented at little or no cost. For example, tuning burners to reduce excess air is a cost-effective technique to reduce the amount of heat lost...

  5. Wind Turbine Towers Establish New Height Standards and Reduce...

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

    Wind Turbine Towers Establish New Height Standards and Reduce Cost of Wind Energy Wind Turbine Towers Establish New Height Standards and Reduce Cost of Wind Energy Case study that...

  6. Dynamic reduced order modeling of entrained flow gasifiers

    E-Print Network [OSTI]

    Monaghan, Rory F. D. (Rory Francis Desmond)

    2010-01-01

    Gasification-based energy systems coupled with carbon dioxide capture and storage technologies have the potential to reduce greenhouse gas emissions from continued use of abundant and secure fossil fuels. Dynamic reduced ...

  7. WIPP Uses Recovery Act Funding to Reduce Nuclear Waste Footprint...

    Office of Environmental Management (EM)

    WIPP Uses Recovery Act Funding to Reduce Nuclear Waste Footprint WIPP Uses Recovery Act Funding to Reduce Nuclear Waste Footprint August 1, 2011 - 12:00pm Addthis Media Contact Deb...

  8. Winning the Future: Grand Ronde Solar Projects Reduce Pollution...

    Office of Environmental Management (EM)

    Grand Ronde Solar Projects Reduce Pollution, Cut Costs Winning the Future: Grand Ronde Solar Projects Reduce Pollution, Cut Costs October 20, 2014 - 5:00pm Addthis PV panels...

  9. Reducing LED Costs Through Innovation | Department of Energy

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

    Reducing LED Costs Through Innovation Reducing LED Costs Through Innovation November 19, 2013 - 3:49pm Addthis A combination solid-state laser turret cutter and stamping machine...

  10. Energy Department Announces $7 Million to Reduce Non-Hardware...

    Office of Environmental Management (EM)

    Million to Reduce Non-Hardware Costs of Solar Energy Systems Energy Department Announces 7 Million to Reduce Non-Hardware Costs of Solar Energy Systems November 15, 2011 - 4:52pm...

  11. Energy Permitting Wizard Helps Reduce Project Barriers in Hawai...

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

    Permitting Wizard Helps Reduce Project Barriers in Hawai'i Energy Permitting Wizard Helps Reduce Project Barriers in Hawai'i To address the complex permitting process for renewable...

  12. Energy Department Announces New Investment to Reduce Fuel Cell...

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

    Announces New Investment to Reduce Fuel Cell Costs Energy Department Announces New Investment to Reduce Fuel Cell Costs August 1, 2013 - 12:00pm Addthis In support of the Obama...

  13. NREL Reduces Climate Control Loads in Electric Vehicles (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-08-01

    NREL demonstrates that zonal climate control can reduce air conditioning power and improve range while maintaining driver thermal sensation.

  14. 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.

  15. ANALYSIS OF MEASURES FOR REDUCING TRANSPORTATION SECTOR GREENHOUSE GAS

    E-Print Network [OSTI]

    ANALYSIS OF MEASURES FOR REDUCING TRANSPORTATION SECTOR GREENHOUSE GAS EMISSIONS IN CANADA by Rose: Analysis of Measures for Reducing Transportation Sector Greenhouse Gas Emissions in Canada Project Number the problem of reducing greenhouse gas (GHG) emissions from the Canadian transportation sector. Reductions

  16. Reduced-Order Modelling of Turbulent Jets for Noise Control

    E-Print Network [OSTI]

    École Normale Supérieure

    Reduced-Order Modelling of Turbulent Jets for Noise Control Michael Schlegel, Bernd R. Noack, an opportunity for model-based jet noise reduction is opening up by the rapidly evolving field of reduced and Gilead Tadmor Abstract A reduced-order modelling (ROM) strategy is pursued to achieve a mech- anistic

  17. Phoenix++: Modular MapReduce for Shared-Memory Systems

    E-Print Network [OSTI]

    Kozyrakis, Christos

    Phoenix++: Modular MapReduce for Shared-Memory Systems Justin Talbot, Richard M. Yoo, and Christos This paper describes our rewrite of Phoenix, a MapReduce framework for shared-memory CMPs and SMPs. Despite successfully demonstrating the applicability of a MapReduce- style pipeline to shared-memory machines, Phoenix

  18. Apparatus for storing high magnetic fields having reduced mechanical forces and reduced magnetic pollution

    DOE Patents [OSTI]

    Prueitt, Melvin L. (Los Alamos, NM); Mueller, Fred M. (Los Alamos, NM); Smith, James L. (Los Alamos, NM)

    1991-01-01

    The present invention identifies several configurations of conducting elements capable of storing extremely high magnetic fields for the purpose of energy storage or for other uses, wherein forces experienced by the conducting elements and the magnetic field pollution produced at locations away from the configuration are both significantly reduced over those which are present as a result of the generation of such high fields by currently proposed techniques. It is anticipated that the use of superconducting materials will both permit the attainment of such high fields and further permit such fields to be generated with vastly improved efficiency.

  19. Apparatus for storing high magnetic fields having reduced mechanical forces and reduced magnetic pollution

    DOE Patents [OSTI]

    Prueitt, M.L.; Mueller, F.M.; Smith, J.L.

    1991-04-09

    The present invention identifies several configurations of conducting elements capable of storing extremely high magnetic fields for the purpose of energy storage or for other uses, wherein forces experienced by the conducting elements and the magnetic field pollution produced at locations away from the configuration are both significantly reduced over those which are present as a result of the generation of such high fields by currently proposed techniques. It is anticipated that the use of superconducting materials will both permit the attainment of such high fields and further permit such fields to be generated with vastly improved efficiency. 15 figures.

  20. Reducing the Cost of Solar Cells

    SciTech Connect (OSTI)

    Scanlon, B.

    2012-04-01

    Solar-powered electricity prices could soon approach those of power from coal or natural gas thanks to collaborative research with solar startup Ampulse Corporation at the National Renewable Energy Laboratory. Silicon wafers account for almost half the cost of today's solar photovoltaic panels, so reducing or eliminating wafer costs is essential to bringing prices down. Current crystalline silicon technology converts energy in a highly efficient manner; however, that technology is manufactured with processes that could stand some improvement. The industry needs a method that is less complex, creates less waste and uses less energy. First, half the refined silicon is lost as dust in the wafer-sawing process, driving module costs higher. Wafers are sawn off of large cylindrical ingots, or boules, of silicon. A typical 2-meter boule loses as many as 6,000 potential wafers during sawing. Second, the wafers produced are much thicker than necessary. To efficiently convert sunlight into electricity, the wafers need be only one-tenth the typical thickness. NREL, the Oak Ridge National Laboratory and Ampulse have partnered on an approach to eliminate this waste and dramatically lower the cost of the finished solar panels. By using a chemical vapor deposition process to grow the silicon on inexpensive foil, Ampulse is able to make the solar cells just thick enough to convert most of the solar energy into electricity. No more sawdust - and no more wasting refined silicon materials. NREL developed the technology to grow high-quality silicon and ORNL developed the metal foil that has the correct crystal structure to support that growth. Ampulse is installing a pilot manufacturing line in NREL's Process Development Integration Laboratory, where solar companies can work closely with lab scientists on integrated equipment to answer pressing questions related to their technology development, as well as rapidly overcoming R and D challenges and risk. NREL's program is focused on transformative innovation in the domestic PV industry. With knowledge and expertise acquired from the PDIL pilot production line tools, Ampulse plans to design a full-scale production line to accommodate long rolls of metal foil. The Ampulse process 'goes straight from pure silicon-containing gas to high-quality crystal silicon film,' said Brent Nelson, the operational manager for the Process Development Integration Laboratory. 'The advantage is you can make the wafer just as thin as you need it - 10 microns or less.' Most of today's solar cells are made out of wafer crystalline silicon, though thin-film cells made of more exotic elements such as copper, indium, gallium, arsenic, cadmium, tellurium and others are making a strong push into the market. The advantage of silicon is its abundance, because it is derived from sand. Silicon's disadvantage is that purifying it into wafers suitable for solar cells can be expensive and energy intensive. Manufacturers add carbon and heat to sand to produce metallurgical-grade silicon, which is useful in other industries, but not yet suitable for making solar cells. So this metallurgical-grade silicon is then converted to pure trichlorosilane (SiCl3) or silane (SiH4) gas. Typically, the purified gas is then converted to create a silicon feedstock at 1,000 degrees Celsius. This feedstock is melted at 1,414 C and recrystallized into crystal ingots that are finally sawed into wafers. The Ampulse method differs in that it eliminates the last two steps in the traditional process and works directly with the silane gas growing only the needed silicon right onto a foil substrate. A team of NREL scientists had developed a way to use a process called hot-wire chemical vapor deposition to thicken silicon wafers with near perfect crystal structure. Using a hot tungsten filament much like the one found in an incandescent light bulb, the silane gas molecules are broken apart and deposited onto the wafer using the chemical vapor deposition technique at about 700 C - a much lower temperature than needed to make the wafer. The hot filament dec

  1. Municipal Utilities' Investment in Smart Grid Technologies Improves...

    Energy Savers [EERE]

    operating efficiencies, lower costs, shorter outages, and reduced peak demands and electricity consumption. Building upon prior smart grid experiences, these utilities were...

  2. Smart Grid Investments Improve Grid Reliability, Resilience,...

    Energy Savers [EERE]

    customers, and improve overall service reliability to reduce customer losses from power disruptions. This report presents findings on smart grid improvements in outage...

  3. The mathematical theory of reduced MHD models for fusion plasmas

    E-Print Network [OSTI]

    Hervé Guillard

    2015-06-05

    The derivation of reduced MHD models for fusion plasma is here formulated as a special instance of the general theory of singular limit of hyperbolic system of PDEs with large operator. This formulation allows to use the general results of this theory and to prove rigorously that reduced MHD models are valid approximations of the full MHD equations. In particular, it is proven that the solutions of the full MHD system converge to the solutions of an appropriate reduced model.

  4. Milestone Reached: New Process Reduces Cost and Risk of Biofuel...

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

    cellulosic ethanol. Addthis Related Articles Milestone Reached: New Process Reduces Cost and Risk of Biofuel Production from Bio-Oil Upgrading Refining Bio-Oil alongside Petroleum...

  5. Y-12 Removes Nuclear Materials from Two Facilities to Reduce...

    National Nuclear Security Administration (NNSA)

    Removes Nuclear Materials from Two Facilities to Reduce Site's Nuclear Footprint (Alpha 5 and 9720-38 No Longer Designated as Nuclear Facilities) | National Nuclear Security...

  6. Noise Reduced Realized Volatility: A Kalman Filter Approach

    E-Print Network [OSTI]

    Owens, John; Steigerwald, Douglas G

    2009-01-01

    F. , 2004. Microstructure Noise, Realized Volatility, andof Market Microstructure Noise. Working Paper w9611, NBER.Noise Reduced Realized Volatility: A Kalman Filter Approach

  7. New DOE-NASCAR Partnership Revs Deployment of Pollution Reducing...

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

    to support the accelerated deployment of clean energy technologies that reduce green house gas emissions and create competitive advantages for American businesses. From the...

  8. Decision-Making to Reduce Manufacturing Greenhouse Gas Emissions

    E-Print Network [OSTI]

    Reich-Weiser, Corinne

    2010-01-01

    the economic and environmental impact of energy policy,”ability to reduce environmental impacts and move toward ato minimize cost and environmental impact,” Proceedings of

  9. Reducing Vehicle Emissions to Meet Environmental Goals | Department...

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

    Vehicle Emissions to Meet Environmental Goals Reducing Vehicle Emissions to Meet Environmental Goals Now that both gasoline and diesel vehicles have been cleaned up, it's time to...

  10. Reduce Natural Gas Use in Your Industrial Process Heating Systems...

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

    Reduce Natural Gas Use in Your Industrial Process Heating Systems Industrial Technologies Program DOEGO-102007-2413 September 2007 A Strong Energy Portfolio for a Strong America...

  11. Delegating to a Powerless Intermediary: Does It Reduce Punishment?

    E-Print Network [OSTI]

    Grossman, Zachary; Oexl, Regine

    2011-01-01

    Powerless Intermediary: Does it Reduce Punishment? ? Reginefact that the dictator does not directly determine the ?nala way of avoiding punishment does not signi?cantly increase

  12. Coal Ash Behavior in Reducing Environments (CABRE) III Year 6...

    Office of Scientific and Technical Information (OSTI)

    (CABRE) III Year 6 - Activity 1.10 - Development of a National Center for Hydrogen Citation Details In-Document Search Title: Coal Ash Behavior in Reducing Environments...

  13. Optimization Online - A Constraint-Reduced Algorithm for ...

    E-Print Network [OSTI]

    Sungwoo Park

    2015-05-21

    May 21, 2015 ... Park and O'Leary proposed a constraint-reduced predictor-corrector algorithm for semidefinite programming with polynomial global ...

  14. A Constraint-reduced Algorithm for Semidefinite Optimization ...

    E-Print Network [OSTI]

    2015-06-02

    Jun 2, 2015 ... More recently, Park and O'Leary [26, 27] developed a constraint- reduced predictor-corrector IPM for SDP and proved its polynomial global ...

  15. A Constraint-Reduced Algorithm for Semidefinite Optimization ...

    E-Print Network [OSTI]

    2015-05-23

    May 23, 2015 ... Park and O'Leary [1, 2] proposed a constraint- reduced predictor-corrector algorithm for semidefinite programming with polynomial global.

  16. DOE Brings Together Private-Sector Leaders to Reduce Petroleum...

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

    Clean Fleets Partnership - an initiative to reduce the country's dependence on imported oil. Less than a year later, the partnership has grown to include 14 of the nation's...

  17. Reducing rural poverty through increased access to energy services...

    Open Energy Info (EERE)

    Reducing rural poverty through increased access to energy services: a review of the multifunctional platform project in Mali Jump to: navigation, search Tool Summary LAUNCH TOOL...

  18. Novel Application of Air Separation Membranes Reduces NOx Emissions...

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

    Emissions Technology available for licensing: Selective permeation of gases using an air separation membrane. Can be retrofitted to existing engines Significantly reduces NOx...

  19. Cleantech: Innovative Lab Partnership Reduces Emissions from Coal

    Broader source: Energy.gov [DOE]

    Learn how the National Energy Technology Laboratory is working to reduce the emission of pollutants from existing coal-fired power plants.

  20. SMART Wind Consortium Virtual Meeting on Installation: Reducing...

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

    to improve safety and efficiency and to reduce installation costs for distributed wind turbines. Gary Harcourt of Great Rock Windpower will discuss the electrician's work and...

  1. Increasing Hydrodynamic Efficiency by Reducing Cross-Beam Energy...

    Office of Scientific and Technical Information (OSTI)

    Increasing Hydrodynamic Efficiency by Reducing Cross-Beam Energy Transfer in Direct-Drive-Implosion Experiments Citation Details In-Document Search Title: Increasing Hydrodynamic...

  2. Treatment Resin Reduces Costs, Materials in Hanford Groundwater...

    Office of Environmental Management (EM)

    Treatment Resin Reduces Costs, Materials in Hanford Groundwater Cleanup - Efficiency delivered more than 6 million in cost savings, 3 million in annual savings Treatment Resin...

  3. New pilot saves customers money and reduces BPA reserve requirements

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

    increasing the electric grid's flexibility to absorb changes in wind energy generation and reducing costs for both the customers and BPA. Portland General Electric and...

  4. Finalize Historic National Program to Reduce Greenhouse Gases...

    Open Energy Info (EERE)

    Finalize Historic National Program to Reduce Greenhouse Gases and Improve Fuel Economy for Cars and Trucks Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Finalize...

  5. Reduced-Order Model Based Feedback Control For Modified Hasegawa...

    Office of Scientific and Technical Information (OSTI)

    design problems) is applied to obtain a low dimensional model of the linearized MHW equation. Then a modelbased feedback controller is designed for the reduced order model using...

  6. Reducing Light Duty Vehicle Fuel Consumption and Greenhouse Gas...

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

    and Greenhouse Gas Emissions: The Combined Potential of Hybrid Technology and Behavioral Adaptation Title Reducing Light Duty Vehicle Fuel Consumption and Greenhouse Gas...

  7. Ultra-Lite Diesel Particulate Filter Cartridge for Reduced Regeneratio...

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

    Reduced Regeneration Time and Fuel Consumption Self-cleaning ceramic filter cartridges offer the advantage of better fuel economy, faster regeneration time, improved heat...

  8. White House Announces New Executive Order To Reduce Greenhouse...

    Energy Savers [EERE]

    directs federal agencies to: Ensure 25% of their total energy (electric and thermal) consumption is from clean energy sources by 2025. Reduce energy use in federal buildings...

  9. Apparatus and method for reducing inductive coupling between...

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

    and method for reducing inductive coupling between levitation and drive coils within a magnetic propulsion system United States Patent Patent Number: 6,250,230 Issued: June 26,...

  10. Steelmaker Matches Recovery Act Funds to Save Energy & Reduce...

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

    Reduce Steel Production Costs ArcelorMittal Indiana Harbor Energy Recovery & Reuse 504 Boiler constructed and installed with DOE Recovery Act Funding The Advanced Manufacturing...

  11. Comments on reducing regulatory burden | Department of Energy

    Office of Environmental Management (EM)

    Solutions, manufacturer of Trane and American Standard residential air conditioners, heat pumps, furnaces, and accessories Comments on reducing regulatory burden More...

  12. Dense Servers for Reduced Energy Use and Facility Space Requirements...

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

    architecture where hundreds of mini motherboards are linked together with integrated switching for load balancing to meet computing demand. SeaMicro's servers reduce power...

  13. Comments on Request For Information regarding Reducing Regulatory...

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

    Request For Information regarding Reducing Regulatory Reform issued February 3, 2011 (Federal Register Vol. 76, No. 23 Thursday, February 3, 2011 Notices). Comments on Request...

  14. New Water Booster Pump System Reduces Energy Consumption by 80...

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

    BENEFITS A Motor Challeng NEW WATER BOOSTER PUMP SYSTEM REDUCES ENERGY CONSUMPTION BY 80 PERCENT AND INCREASES RELIABILITY Summary Due to major renovations at their Pontiac...

  15. Parsons Hall Emergency Operations Plan

    E-Print Network [OSTI]

    Pringle, James "Jamie"

    ...................................................... 3 B. Power Outage ............................................................................................................................... 11 B. Power Outage

  16. Outage Performance of Cognitive Wireless Relay Kyounghwan Lee Aylin Yener

    E-Print Network [OSTI]

    Yener, Aylin

    nodes and a primary (licensed) node. Cognitive nodes relay information from the source depending source nodes com- municate to their destinations via multiple hops facilitated by intermediate cognitive nodes able to acquire spectrum holes. Specifically, we consider a model that consists of a source node

  17. Market Assessment of Refinery Outages Planned for March 2011...

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

    fluctuating between 70 and 85 per barrel, but by the beginning of 2011, Brent crude oil was at 95 per barrel. Recent instability in the Middle East and North Africa added...

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

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

    and government officials will first work to restore power to critical infrastructure like power plants and transmission lines, water treatment facilities, and telecommunications...

  19. Outage Performance of Double Stratospheric Platforms Diversity Systems

    E-Print Network [OSTI]

    Gesbert, David

    /stratospheric platforms (HAPs) are either airships or planes that operate in the stratosphere, 17-22km above the ground [1

  20. Robust transmit beamforming design using outage probability specification 

    E-Print Network [OSTI]

    Du, Huiqin

    2010-01-01

    Transmit beamforming (precoding) is a powerful technique for enhancing the channel capacity and reliability of multiple-input and multiple-output (MIMO) wireless systems. The optimum exploitation of the benefits provided ...

  1. Outage-based throughput in wireless packet networks

    E-Print Network [OSTI]

    Win, Moe Z.

    With the increased competition for the electromagnetic spectrum, it is important to characterize the impact of interference in the performance of a wireless packet network, which is traditionally measured by its throughput. ...

  2. Market Assessment of Refinery Outages Planned for October 2010...

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

    average values for 2002-2009 excluding months in 2005, 2006, and 2008 affected by hurricanes & refinery closures. Similarly, typical historical values are average planned...

  3. 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

    2011-10-17

    Cascading failure can cause large blackouts, and a variety of methods are emerging to study this challenging topic. In parts 1 and 2 of this paper, the IEEE task force on cascading failure seeks to consolidate and review the progress of the field towards methods and tools of assessing the risk of cascading failure. Part 2 summarizes and discusses the state of the art in the available cascading failure modeling tools. The discussion integrates industry and research perspectives from a variety of institutions. Strengths, weaknesses, and gaps in current approaches are indicated.

  4. Estimating Hurricane Outage and Damage Risk in Power Distribution System 

    E-Print Network [OSTI]

    Han, Seung Ryong

    2009-05-15

    Hurricanes have caused severe damage to the electric power system throughout the Gulf coast region of the U.S., and electric power is critical to post-hurricane disaster response as well as to long-term recovery for impacted areas. Managing...

  5. Potomac River Project Outage Schedule Clarification | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy AEnergyPresidential PermitDAYS -Portmouth Site SustainabilityAh,of Emergency.

  6. Preparing for a Power Outage | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy AEnergyPresidential PermitDAYS -Portmouth2015 | DepartmentWhat is your plan for

  7. Property:OutageMapURL | 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 Jump

  8. Microsoft Word - 112706 Final Outage Letter PUBLIC.doc

    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 nAand DOE Safetyof MethaneMillion Electric Vehicles By 2015

  9. Economic Benefits of Increasing Electric Grid Resilience to Weather Outages

    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:FinancingPetroleum Based|DepartmentStatementofApril 25,EV Everywhere|Muscle Car |EcoCAR: The|

  10. North American Electric Reliability Council Power Outage Update |

    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 eDepartment of

  11. HPSS Outage Tue Mar 19 - Fri Mar 22

    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 likeUniverse (Journalvivo Low-Dose Lowï‚—34 Revision 0 ApprovedD2SADeputy Group

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

    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 likeUniverse (JournalvivoHigh energyHighland ViewdefaultJulySeptember 2012OS

  13. Hopper scheduled maintenance tomorrow (Sept 19) and /project outage

    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 likeUniverse (JournalvivoHigh energyHighland ViewdefaultJulySeptember 2012OSscheduled

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann JacksonDepartment ofOffice ofofWindUpcomingcanGrid Integrationheat WhatDotacross

  15. Reducing Aviation's Environmental Impact Through Large Aircraft For Short Ranges

    E-Print Network [OSTI]

    Zingg, David W.

    aviation's impact on climate change. Examples include alternative fuels,4,5 blendedReducing Aviation's Environmental Impact Through Large Aircraft For Short Ranges Gaetan K.W Kenway,500 nm. We show that the impact of civil aviation on climate change can be reduced by using large

  16. n-Gram Statistics in MapReduce

    E-Print Network [OSTI]

    Waldmann, Uwe

    Computing n-Gram Statistics in MapReduce Klaus Berberich (kberberi@mpi-inf.mpg.de) Srikanta Bedathur (bedathur@iiitd.ac.in) #12;Computing n-Gram Statistics in MapReduce ­ Klaus Berberich / 26 n-Gram Statistics Statistics about variable-length word sequences (e.g., lord of the rings, at the end

  17. Reducing the Energy Consumption of Mobile Applications Behind the Scenes

    E-Print Network [OSTI]

    Tilevich, Eli

    Reducing the Energy Consumption of Mobile Applications Behind the Scenes Young-Woo Kwon and Eli, an increasing number of perfective maintenance tasks are concerned with optimizing energy consumption. However, optimizing a mobile application to reduce its energy consumption is non-trivial due to the highly volatile

  18. Reducing the Cost of Generating APH-distributed Random Numbers

    E-Print Network [OSTI]

    Telek, Miklós

    Reducing the Cost of Generating APH-distributed Random Numbers Philipp Reinecke1 , Mikl´os Telek2 from PH distributions and propose two algorithms for reducing the cost associated with generating representation that minimises the cost associated with generating random numbers. In this paper we study

  19. Effectiveness of Houseplants in Reducing the Indoor Air Pollutant Ozone

    E-Print Network [OSTI]

    Decoteau, Dennis R.

    Effectiveness of Houseplants in Reducing the Indoor Air Pollutant Ozone Heather L. Papinchak1 , E for their species effectiveness in reducing ozone concentrations in a simulated indoor environment. Continuously supply system were used to simulate an indoor environment in which ozone concentrations could be measured

  20. REDUCING ENVIRONMENTAL IMPACT THROUGH SYSTEMATIC PRODUCT EVOLUTION1

    E-Print Network [OSTI]

    REDUCING ENVIRONMENTAL IMPACT THROUGH SYSTEMATIC PRODUCT EVOLUTION1 Stewart Coulter and Bert Bras, companies are trying to reduce the environmental impacts of their products. At the same time, designers on environmental impact 1 Published in International Journal of Environmentally Conscious Design & Manufacturing

  1. PPPL wins Department of Energy award for reducing greenhouse...

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

    (SF6), the gas used to insulate electronic equipment that has the potential to cause global warming at many times the rate of carbon dioxide. PPPL reduced leaks of SF6 by 65...

  2. Using occupancy to reduce energy consumption of buildings

    E-Print Network [OSTI]

    Balaji, Bharathan

    2011-01-01

    Interfaces to Reduce PC Energy Usage. In Proceedings of46.2% of this primary energy usage[9]. Since buildings havecontributors to the total energy usage. Then, we can study

  3. On models of arithmetic inside a reduced Juliette Kennedy

    E-Print Network [OSTI]

    Kennedy, Juliette

    On models of arithmetic inside a reduced power Juliette Kennedy Department of Mathematics University of Helsinki Helsinki, Finland juliette.kennedy@helsinki.fi May 17, 2001 1 Introduction In 1934

  4. Reduced /Conservation Tillage in South and Central Texas 

    E-Print Network [OSTI]

    Stichler, Charles; Livingston, Stephen

    2003-03-19

    Reduced or conservation tillage can benefit sorghum crops and increase profit. This publication discusses the types of tilling systems and the conditions for using each in South and Central Texas....

  5. A Reduced Basis Element Approach for the Reynolds Lubrication Equation

    E-Print Network [OSTI]

    A Reduced Basis Element Approach for the Reynolds Lubrication Equation Lösen der Reynolds Reynolds Lubrication Equation 8 2.1 Introduction of the application, background setting . . . . . . . . . . . . . . . . . . . . . . 8 2.2 Reynolds Lubrication Equation

  6. Temporally Scalable Visual SLAM using a Reduced Pose Graph

    E-Print Network [OSTI]

    Johannsson, Hordur

    2012-05-25

    In this paper, we demonstrate a system for temporally scalable visual SLAM using a reduced pose graph representation. Unlike previous visual SLAM approaches that use keyframes, our approach continually uses new measurements ...

  7. 10 Strategic Steps to Reducing Your Energy Costs 

    E-Print Network [OSTI]

    Swanson, G. A.; Haley, M.

    2005-01-01

    If your company is looking at energy management as part of its overall strategy to reduce costs and improve profits, it is not alone. While energy prices have increased at a shocking rate, so has interest in environmental responsibility. Progressive...

  8. Reduce Risk, Increase Clean Energy: How States and Cities are...

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

    Provides a overview of finance tools available to scale-up to clean energy. Author: Clean Energy and Bond Finance Initiative (CE+BFI) Reduce Risk, Increase Clean Energy More...

  9. Temporally scalable visual SLAM using a reduced pose graph

    E-Print Network [OSTI]

    Johannsson, Hordur

    In this paper, we demonstrate a system for temporally scalable visual SLAM using a reduced pose graph representation. Unlike previous visual SLAM approaches that maintain static keyframes, our approach uses new measurements ...

  10. Assessment of propfan propulsion systems for reduced environmental impact

    E-Print Network [OSTI]

    Peters, Andreas, Ph. D. Massachusetts Institute of Technology

    2010-01-01

    Current aircraft engine designs tend towards higher bypass ratio, low-speed fan designs for improved fuel burn, reduced emissions and noise. Alternative propulsion concepts include counter-rotating propfans (CRPs) which ...

  11. Replace Pressure-Reducing Valves with Backpressure Turbogenerators

    SciTech Connect (OSTI)

    Not Available

    2006-01-01

    This revised ITP steam tip sheet on replacing pressure-reducing valves provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  12. Increasing Stability Reduces Conformational Heterogeneity in a Protein Folding

    E-Print Network [OSTI]

    Increasing Stability Reduces Conformational Heterogeneity in a Protein Folding Intermediate, the results show that protein folding intermediates are ensembles of different structural forms direct experi- mental evidence in support of a basic tenet of energy landscape theory for protein folding

  13. Passive Reduced Order Modeling of Multiport Interconnects via Semidefinite Programming

    E-Print Network [OSTI]

    Mahmood, Zohaib

    In this paper we present a passive reduced order modeling algorithm for linear multiport interconnect structures. The proposed technique uses rational fitting via semidefinite programming to identify a passive transfer ...

  14. Assessing and Reducing Miscellaneous Electric Loads (MELs) in Lodging

    SciTech Connect (OSTI)

    Rauch, Emily M.

    2011-09-01

    Miscellaneous electric loads (MELs) are the loads outside of a building's core functions of heating, ventilating, air conditioning, lighting, and water heating. This report reviews methods to reduce MELs in lodging.

  15. Proper Lagoon Management to Reduce Odor and Excessive Sludge Accumulation 

    E-Print Network [OSTI]

    Mukhtar, Saqib

    1999-10-19

    Proper management techniques to reduce odor and excessive sludge accumulation include maintaining pH and salt levels, pumping regularly, maintaining adequate bacteria levels, and designing for efficiency. Definitions of key words are boxed for easy...

  16. Strategies for reducing energy demand in the materials sector

    E-Print Network [OSTI]

    Sahni, Sahil

    2013-01-01

    This research answers a key question - can the materials sector reduce its energy demand by 50% by 2050? Five primary materials of steel, cement, aluminum, paper, and plastic, contribute to 50% or more of the final energy ...

  17. New navel orangeworm sanitation standards ?could reduce almond damage

    E-Print Network [OSTI]

    Higbee, Bradley S.; Siegel, Joel P

    2009-01-01

    disruption, dispersal and damage prediction. Proc 34thtype and amount of insect damage. J Ag Food Chem 49:4513–9.standards could reduce almond damage by Bradley S. Higbee

  18. New Water Booster Pump System Reduces Energy Consumption by 80...

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

    be adjusted to meet plant requirements. As a result, the company reduced pumping system energy consumption by 80 percent (225,100 kWh per year), saving an annual 11,255 in...

  19. Reducing 3G energy consumption on mobile devices

    E-Print Network [OSTI]

    Deng, Shuo

    2012-01-01

    The 3G wireless interface is a significant contributor to battery drain on mobile devices. This paper describes the design, implementation, and experimental evaluation of methods to reduce the energy consumption of the 3G ...

  20. Enhancements to Model-reduced Fluid Simulation Dan Gerszewski

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    ]. In this short paper, we present several enhancements to the basic reduced fluid simulation pipeline the training data and requiring signif- icantly less source data without the risk of over-fitting. We treat two

  1. BOINC-MR: MapReduce in a Volunteer Environment

    E-Print Network [OSTI]

    Ferreira, Paulo

    BOINC-MR: MapReduce in a Volunteer Environment Short Paper Fernando Costa, Lu´is Veiga, and Paulo Ferreira Distributed Systems Group, INESC-ID Technical University of Lisbon R. Alves Redol, 9 1000

  2. Reduce, Reuse, Recycle: An Approach to Building Large Internet Caches

    E-Print Network [OSTI]

    Rabinovich, Michael "Misha"

    Reduce, Reuse, Recycle: An Approach to Building Large Internet Caches Syam Gadde Dept. of Computer, a distributed Internet object cache targeted to the needs of the organizations that aggregate the end users

  3. Reduce Pumping Costs through Optimum Pipe Sizing: Industrial...

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

    9 * October 2005 Reduce Pumping Costs through Optimum Pipe Sizing Every industrial facility has a piping network that carries water or other fluids. According to the U.S....

  4. Lock Prediction to Reduce the Overhead of Synchronization Primitives 

    E-Print Network [OSTI]

    Shankar, Anusha

    2014-12-03

    access on shared data structures using lock and unlock operations. These operations are implemented in hardware as a set of instructions that atomically read and then write to a single memory location. Good synchronization techniques should try to reduce...

  5. Reduced Nitrogen and Natural Gas Consumption at Deepwell Flare 

    E-Print Network [OSTI]

    Williams, C.

    2004-01-01

    Facing both an economic downturn and the liklihood of steep natural gas price increases, company plants were challenged to identify and quickly implement energy saving projects that would reduce natural gas usage. Unit operating personnel...

  6. Speciation of Uranium in Biologically Reduced Sediments in the...

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

    Speciation of Uranium in Biologically Reduced Sediments in the Old Rifle Aquifer Wednesday, May 16, 2012 - 1:30pm SSRL Conference Room 137-322 Juan S. Lezama Pacheco The speciation...

  7. Reducing PM Concentrations in Simulated High Temperature Gas Streams 

    E-Print Network [OSTI]

    Luehrs, Daniel R

    2014-08-07

    F). These high temperatures impact the cyclone inlet velocities as a consequence of the reduced gas densities. Changes in gas densities will influence the cyclone design. It was hypothesized that changes in cyclone performances as a consequence lower gas...

  8. Reduce Overhead, Implement Energy Efficiency in Water/Wastewater 

    E-Print Network [OSTI]

    Cantwell, J. C.

    2007-01-01

    Through the Focus on Energy program in the State of Wisconsin we have been able to identify savings for industries in their water/wastewater treatment or distribution systems. Modifications required to realize savings resulted in reduced energy...

  9. Reducing Air-Conditioning System Energy Using a PMV Index 

    E-Print Network [OSTI]

    Li, H.; Zhang, Q.

    2006-01-01

    The control system of central air-conditioning, based on PMV, not only improves thermal comfort but also reduces system energy consumption. A new thermal comfort degree softsensor model is built via use of the CMAC neural network nonlinear...

  10. Method for making oxygen-reducing catalyst layers

    DOE Patents [OSTI]

    O'Brien, Dennis P.; Schmoeckel, Alison K.; Vernstrom, George D.; Atanasoski, Radoslav; Wood, Thomas E.; O'Neill, David G.

    2010-06-22

    Methods are provided for making oxygen-reducing catalyst layers, which include simultaneous or sequential stops of physical vapor depositing an oxygen-reducing catalytic material onto a substrate, the catalytic material comprising a transition metal that is substantially free of platinum; and thermally treating the catalytic material. At least one of the physical vapor deposition and the thermal treatment is performed in a processing environment comprising a nitrogen-containing gas.

  11. Sulfide catalysts for reducing SO2 to elemental sulfur

    DOE Patents [OSTI]

    Jin, Yun (Peking, CN); Yu, Qiquan (Peking, CN); Chang, Shih-Ger (El Cerrito, CA)

    2001-01-01

    A highly efficient sulfide catalyst for reducing sulfur dioxide to elemental sulfur, which maximizes the selectivity of elemental sulfur over byproducts and has a high conversion efficiency. Various feed stream contaminants, such as water vapor are well tolerated. Additionally, hydrogen, carbon monoxide, or hydrogen sulfides can be employed as the reducing gases while maintaining high conversion efficiency. This allows a much wider range of uses and higher level of feed stream contaminants than prior art catalysts.

  12. A rate design to increase efficiency and reduce revenue requirements

    SciTech Connect (OSTI)

    Boonin, David Magnus

    2009-05-15

    One decoupling approach, a Straight Fixed Variable (SFV) rate design, is a rational way to recover fixed and variable costs because it aligns pricing with variable and fixed cost causation, thereby removing the utility's profit sensitivity to reduced sales. The problem with SFV is that it reduces the variable charge to short-term variable cost, leading to overconsumption. Revenue-neutral energy efficiency ''feebates'' combining fees and rebates offer an economic incentive for consumer energy efficiency. (author)

  13. Predictive Limited Feedback for Cooperative Transmission

    E-Print Network [OSTI]

    Heath Jr., - Robert W.

    to improve sum-rates and reduce outages. Users estimate and feedback CSI of the desired and multiple information (CSI) at the cooperating base stations can be utilized to to improve data rates and reduce outages. Wireless Networking and Communications Group Department of Electrical and Computer Engineering

  14. Bioelectrical Perchlorate Reduction and Characterization of Novel Dissimilatory Perchlorate Reducing Bacteria

    E-Print Network [OSTI]

    Thrash, James Cameron

    2009-01-01

    per)chlorate-reducing bacteria and their phylogeneticper)chlorate- reducing bacteria. Appl. Environ. Microbiol.perchlorate-reducing bacteria Dechlorobacter hydrogenophilus

  15. Identification of Iron-reducing Thermus strains as Thermus scotoductus

    SciTech Connect (OSTI)

    Balkwill, David L.; Kieft, T L.; Tsukuda, Toyoko; Kostandarithes, Heather M.; Onstott, T C.; Macnaughton, S.; Bownas, J.; Fredrickson, Jim K.

    2004-02-01

    Thermus strain SA-01, previously isolated from a deep (3.2) South African gold mine, is closely related to Thermus strains NMX2 A.1 and VI-7 (previously isolated from thermal springs in New Mexico USA and Portugal, respectively). Thermus strains SA-01 and NMX2 A.1 have also been shown previously to grow using nitrate, Fe(III), , Mn(IV) or So as terminal electron acceptors and to be capable of reducing Cr(VI), U(VI), Co(III), and the quinine-containing compound anthraquinone-2,6-disulfonate. The objectives of this study were to determine the phylogenetic positions of the three known metal-reducing Thermus strains and to determine the phylogenetic significance of metal reduction within the genus Thermus. Phylogenetic analyses of 16S rDNA sequences, BOX PCR genomic fingerprinting, and DNA-DNA reassociation analyses indicated that these strains belong to the previously described genospecies T. scotoductus. The morphologies and lipid fatty acid profiles of these metal-reducing strains are consistent with their identification as T. scotoductus; however, the T. scotoductus strains tested in this study evinced a wide intraspecies variability in some other phenotypic traits, e.g., carbon substrate utilization and pigmentation. Iron reduction occurred in all strains of T. scotoductus tested except the mixotrophic, sulfur-oxidizing strain IT-7254. Thermus strains belonging to other species did not reduce Fe(III) to Fe(II) or reduced it only poorly.

  16. Processes for converting lignocellulosics to reduced acid pyrolysis oil

    DOE Patents [OSTI]

    Kocal, Joseph Anthony; Brandvold, Timothy A

    2015-01-06

    Processes for producing reduced acid lignocellulosic-derived pyrolysis oil are provided. In a process, lignocellulosic material is fed to a heating zone. A basic solid catalyst is delivered to the heating zone. The lignocellulosic material is pyrolyzed in the presence of the basic solid catalyst in the heating zone to create pyrolysis gases. The oxygen in the pyrolysis gases is catalytically converted to separable species in the heating zone. The pyrolysis gases are removed from the heating zone and are liquefied to form the reduced acid lignocellulosic-derived pyrolysis oil.

  17. Increasing Class C fly ash reduces alkali silica reactivity

    SciTech Connect (OSTI)

    Hicks, J.K.

    2007-07-01

    Contrary to earlier studies, it has been found that incremental additions of Class C fly ash do reduce alkali silica reactivity (ASR), in highly reactive, high alkali concrete mixes. AST can be further reduced by substituting 5% metakaolin or silica fume for the aggregate in concrete mixes with high (more than 30%) Class C fly ash substitution. The paper reports results of studies using Class C fly ash from the Labadie Station plant in Missouri which typically has between 1.3 and 1.45% available alkalis by ASTM C311. 7 figs.

  18. Reducing dust emissions at OAO Alchevskkoks coke battery 10A

    SciTech Connect (OSTI)

    T.F. Trembach; E.N. Lanina [Giprokoks, the State Institute for the Design of Coke-Industry Enterprises, Kharkov (Ukraine)

    2009-07-15

    Coke battery 10A with rammed batch is under construction at OAO Alchevskkoks. The design documentation developed by Giprokoks includes measures for reducing dust emissions to the atmosphere. Aspiration systems with dry dust trapping are employed in the new components of coke battery 10A and in the existing coke-sorting equipment. Two-stage purification of dusty air in cyclones and bag filters is employed for the coke-sorting equipment. This system considerably reduces coke-dust emissions to the atmosphere.

  19. (IFG) and anterior insula (AI), which sustain momentary feed-back-guided control when tasks are performed that are novel,

    E-Print Network [OSTI]

    and visceral centers of the nervous system such as the hypothalamus (Carmichael & Price 1995), the AI may the level of energy expenditure required to reach a proposed effort (Prévost et al. 2010), while several

  20. Attrition resistant, zinc titanate-containing, reduced sulfur sorbents

    DOE Patents [OSTI]

    Vierheilig, Albert A.; Gupta, Raghubir P.; Turk, Brian S.

    2004-11-02

    The disclosure is directed to sorbent compositions for removing reduced sulfur species (e.g., H.sub.2 S, COS and CS.sub.2) a feed stream. The sorbent is formed from a multi-phase composition including a zinc titanate phase and a zinc oxide-aluminate phase. The sorbent composition is substantially free of unreacted alumina.

  1. Fish oil can help reduce deaths from heart disease,

    E-Print Network [OSTI]

    Shen, Jun

    Fish oil can help reduce deaths from heart disease, according to new evidence reports announced- ute to heart disease. The review also found other evidence indicating that fish oil can help lower in knowledge." Continued, page 2... Evidence Reports Confirm Benefits of Fish Oil Elizabeth Yetley, PhD Joins

  2. Analysis of Some Methods for Reduced Rank Gaussian Process Regression

    E-Print Network [OSTI]

    Analysis of Some Methods for Reduced Rank Gaussian Process Regression Joaquin Qui~nonero-Candela1 there is strong motivation for using Gaussian Pro- cesses (GPs) due to their excellent performance in regression-effective ap- proximations to GPs, both for classification and for regression. In this paper we analyze one

  3. PET: Reducing Database Energy Cost via Query Optimization

    E-Print Network [OSTI]

    Tu, Yicheng

    PET: Reducing Database Energy Cost via Query Optimization Zichen Xu The Ohio State University xuz a cost-based query optimizer that eval- uates query plans by both performance and energy costs. By fol can achieve a good understanding of the energy- related query optimization and cost-based plan

  4. Sex-biased maternal effects reduce ectoparasite-induced mortality

    E-Print Network [OSTI]

    Badyaev, Alex

    logistic growth parasites sexual dimorphism Developmental periods, such as incubation and nestling stagesSex-biased maternal effects reduce ectoparasite-induced mortality in a passerine bird Alexander V of developmental periods is ex- pected to be slow. In birds, maternal effects on egg-laying order and offspring

  5. Revolutionary ultrasonic nozzle can reduce water and energy used for

    E-Print Network [OSTI]

    Sóbester, András

    Revolutionary ultrasonic nozzle can reduce water and energy used for cleaning by ten times by N O R into the air to then settle and contaminate other surfaces). As it is able to use cold water, energy is saved ultrasonic cleaning baths can easily be scaled up and neither can be used To search, type and hit enter " F i

  6. Reducing multiples: a mathematical formula that accurately predicts rates

    E-Print Network [OSTI]

    Jayaweera, Sudharman K.

    Reducing multiples: a mathematical formula that accurately predicts rates of singletons, twins Objective: To develop a mathematical formula that accurately predicts the probability of a singleton, twin modeling we developed a formula, the Combined Formula, and tested for the ability of this formula

  7. NASA TM-2012-217361 Evaluating Shielding Approaches to Reduce

    E-Print Network [OSTI]

    Rathbun, Julie A.

    NASA TM-2012-217361 Evaluating Shielding Approaches to Reduce Space Radiation Cancer Risks Francis A. Cucinotta NASA Lyndon B. Johnson Space Center Houston, Texas Myung-Hee Y. Kim U.S.R.A., Division, Texas May 2012 #12;THE NASA STI PROGRAM OFFICE . . . IN PROFILE Since its founding, NASA has been

  8. Social Networking Reduces Peak Power Consumption in Smart Grid

    E-Print Network [OSTI]

    Wu, Dapeng Oliver

    in buildings represents approximately 74% of the nation's electricity consumption [1]. However, electricity the peak power consumption of schedulable jobs of electrical appliances of users under de- lay requirements1 Social Networking Reduces Peak Power Consumption in Smart Grid Qiuyuan Huang, Xin Li, Jing Zhao

  9. Major Corporate Fleets Align to Reduce Oil Consumption

    Broader source: Energy.gov [DOE]

    President Obama launches the National Clean Fleets Partnership, an initiative that helps large companies reduce with fuel usage by incorporating electric vehicles, alternative fuels and conservation techniques into their operations. Charter partners include AT&T, FedEx, Pepsi-Co, UPS and Verizon.

  10. Technology options and effective policies to reduce greenhouse gas

    E-Print Network [OSTI]

    Technology options and effective policies to reduce greenhouse gas emissions and improve security); DNE21+ model. · National Institute for Environmental Studies (Japan); AIM model. · Natural Resources both the climate problem and security of supply, and thus provide synergies, while others represent

  11. Reducing Cache Pollution via Dynamic Data Prefetch Filtering

    E-Print Network [OSTI]

    Lee, Hsien-Hsin "Sean"

    Reducing Cache Pollution via Dynamic Data Prefetch Filtering Xiaotong Zhuang and Hsien-Hsin S. Lee for fast cache accesses, data cache pollution caused by overly aggressive prefetch mechanisms will become to pollution but also throttle bus bandwidth, leading to an overall performance degradation. In this paper, we

  12. Tachyonic equations to reduce the divergent integral of QED

    E-Print Network [OSTI]

    Z. Wang

    2009-11-12

    If the total integral including both 0reduced.Firstly,we use the Cherenkov radiation in media as analogue to confirm the formulation (7)-(10) of a tachyon in vacuum.Then these equations are applied to calculate the Lamb shift and the cut-off frequency is unnecessary.

  13. ISU Webinar: Reducing Barriers for Deployment of Offshore Wind Energy

    E-Print Network [OSTI]

    McCalley, James D.

    1 ISU Webinar: Reducing Barriers for Deployment of Offshore Wind Energy Coastal Ohio Wind Project deployment of wind turbines in the coastal and offshore regions of Northern Ohio. The project evaluated 18, 2015 #12;2 Coastal Ohio Wind Project The COWP intended to address problems that impeded

  14. Ability of Catalytic Converters to Reduce Air Pollution

    E-Print Network [OSTI]

    Nizkorodov, Sergey

    NOx - 1 Ability of Catalytic Converters to Reduce Air Pollution MEASUREMENT OF SELECTED AIR Air Pollution MEASUREMENT OF SELECTED AIR POLLUTANTS IN CAR EXHAUST INTRODUCTION Automobile engines of gasoline (hydrocarbons, CxHy) in air: CxHy + O2 CO2 + H2O + heat (1) When there is the correct balance

  15. Designing Automation to Reduce Operator Errors Nancy G. Leveson

    E-Print Network [OSTI]

    Leveson, Nancy

    Designing Automation to Reduce Operator Errors Nancy G. Leveson Computer Science and Engineering University of Washington Everett Palmer NASA Ames Research Center Introduction Advanced automation has been of mode­related problems [SW95]. After studying accidents and incidents in the new, highly automated

  16. Reducing Electricity Demand Charge for Data Centers with Partial Execution

    E-Print Network [OSTI]

    Li, Baochun

    Reducing Electricity Demand Charge for Data Centers with Partial Execution Hong Xu Department Department of Electrical and Computer Engineering University of Toronto Toronto, ON, Canada bli@eecg.toronto.edu ABSTRACT Data centers consume a large amount of energy and incur substantial electricity cost

  17. Reduced Turbine Emissions Using Hydrogen-Enriched Fuels

    E-Print Network [OSTI]

    ·Aids in the attainment of energy independence from foreign sources ­ Low-heating and medium emissions Source: Analysis of Strategies for Reducing Multiple Emissions from Power Plants: Sulfur Dioxide Systems At ultra lean conditions a tradeoff exists between NOx and CO emissions · Lean Premixed Combustion

  18. Could a Common Household Fungus Reduce Oil Imports?

    Broader source: Energy.gov [DOE]

    Imagine if the same mold that ruins old grapes and onions could double as a key ingredient in the recipe to reduce U.S. dependence on foreign oil. Pacific Northwest National Laboratory are working to harness the natural process that spoils fruits and vegetables as a way to make fuel and other petroleum substitutes.

  19. Food-supplementing parents reduces their sons' song repertoire size

    E-Print Network [OSTI]

    Zanette, Liana

    Food-supplementing parents reduces their sons' song repertoire size Liana Zanette1,*, Michael, Canada Food-supplemented parents typically produce more offspring, as numerous experiments on vertebrate, with implications concerning the adult quality of offspring, although few experiments have addressed whether food-supplementing

  20. A High--Performance ReducedComplexity GMSK Demodulator

    E-Print Network [OSTI]

    Al-Dhahir, Naofal

    as the digital modulation scheme for the European global system for mobile communications (GSM) standard due in superior performance in the presence of adjacent channel interference (ACI) and non--linear amplifiers. The presence of severe multipath fading and narrow--band receive filtering (to reduce ACI) further increases

  1. Effects of Reduced Connectivity in Rural and Remote Communities

    E-Print Network [OSTI]

    Effects of Reduced Connectivity in Rural and Remote Communities Abstract In this paper we describe ignored yet important user population. Keywords Remote and rural communities, connectivity, qualitative understand user needs in rural and remote communities and what impact lack of connectivity has on users

  2. ARMOR: Analyzer for Reducing Module Operational Risk Michael R. Lyu

    E-Print Network [OSTI]

    Lyu, Michael R.

    contained in software systems or modules. To model software risk the quality indica­ tors of software and establishment of quality index of software programs. However, few tool can both perform sophisticated risk for Reducing Module Operational Risk) is a software risk analysis tool which automati­ cally identifies

  3. Recommendations to Reduce Light Pollution and Energy Costs on the

    E-Print Network [OSTI]

    Recommendations to Reduce Light Pollution and Energy Costs on the Campus of Bishop's University BU pollution at the Bishop's University Observatory from campus light sources. They are listed in descending lights are the largest contributors to light pollution at the Bishop's University Observatory from

  4. Water Security Understand, evaluate, and reduce the environmental

    E-Print Network [OSTI]

    Boynton, Walter R.

    Water Security Understand, evaluate, and reduce the environmental consequences of demand for water waste remediation to drugs and biofuels. Graduate Education and Workforce Development authorized UMCES to seek accreditation for the award of joint graduate degrees in the Marine-Estuarine-Environmental

  5. Clustering Static Analysis Defect Reports to Reduce Maintenance Costs

    E-Print Network [OSTI]

    Weimer, Westley

    Clustering Static Analysis Defect Reports to Reduce Maintenance Costs Zachary P. Fry and Westley, for large systems, these tools often produce an overwhelming number of defect reports. Many of these defect reports are conceptually similar, but addressing each report separately costs developer effort

  6. Reducing Attack Surfaces for Intra-Application Communication in Android

    E-Print Network [OSTI]

    Wagner, David

    Reducing Attack Surfaces for Intra-Application Communication in Android David Kantola, Erika Chin,emc,-w,daw}@berkeley.edu ABSTRACT The complexity of Android's message-passing system has led to numerous vulnerabilities in third-application communication mechanisms. Consequently, we propose modifications to the Android platform to detect and protect

  7. Reduced enrichment for research and test reactors: Proceedings

    SciTech Connect (OSTI)

    Not Available

    1993-07-01

    The 15th annual Reduced Enrichment for Research and Test Reactors (RERTR) international meeting was organized by Ris{o} National Laboratory in cooperation with the International Atomic Energy Agency and Argonne National Laboratory. The topics of the meeting were the following: National Programs, Fuel Fabrication, Licensing Aspects, States of Conversion, Fuel Testing, and Fuel Cycle. Individual papers have been cataloged separately.

  8. Method to reduce dislocation density in silicon using stress

    DOE Patents [OSTI]

    Buonassisi, Anthony; Bertoni, Mariana; Argon, Ali; Castellanos, Sergio; Fecych, Alexandria; Powell, Douglas; Vogl, Michelle

    2013-03-05

    A crystalline material structure with reduced dislocation density and method of producing same is provided. The crystalline material structure is annealed at temperatures above the brittle-to-ductile transition temperature of the crystalline material structure. One or more stress elements are formed on the crystalline material structure so as to annihilate dislocations or to move them into less harmful locations.

  9. UNCORRECTED 2 Reduced raindrop-impact driven soil erosion

    E-Print Network [OSTI]

    Walter, M.Todd

    study were to 29see if infiltration influences soil erosion due to raindrop- 0022-1694/$ - see frontUNCORRECTED PROOF 2 Reduced raindrop-impact driven soil erosion 3 by infiltration 4 Jeffrey D transport; Infiltration; Shield formation; soil erosion; Rainfall impact; Deposition Summary We used

  10. Manufacturing process to reduce large grain growth in zirconium alloys

    DOE Patents [OSTI]

    Rosecrans, Peter M. (Niskayuna, NY)

    1987-01-01

    A method of treating cold-worked zirconium alloys to reduce large grain gth during thermal treatment at temperatures above the recrystallization temperature of the alloy comprising heating the cold-worked alloy between about 1300.degree.-1350.degree. F. for 1 to 3 hours prior to treatment above its recrystallization temperature.

  11. Control of Variable Geometry Turbocharged Diesel Engines for Reduced Emissions

    E-Print Network [OSTI]

    Stefanopoulou, Anna

    Control of Variable Geometry Turbocharged Diesel Engines for Reduced Emissions A.G. Stefanopoulouz Introduction In this paper we consider an automotive control problem for a variable geometry turbocharged (VGT torque output as compared to (non-turbocharged) naturally aspirated engines 13]. The power generated

  12. Reduced Search Space for Rapid Bicycle Detection M. Nilsson1

    E-Print Network [OSTI]

    Lunds Universitet

    Reduced Search Space for Rapid Bicycle Detection M. Nilsson1 , H. Ard¨o1 , A. Laureshyn2 and A.persson}@tft.lth.se Keywords: Bicycle Detection, Search Space, RANSAC, SMQT, split up SNoW Abstract: This paper describes a solution to the application of rapid detection of bicycles in low resolution video. In particular

  13. Strategic Use of Electric Vehicle Charging to Reduce Renewable Energy

    E-Print Network [OSTI]

    Strategic Use of Electric Vehicle Charging to Reduce Renewable Energy Curtailment on Oahu An analysis of the use of electric vehicle charging to mitigate renewable energy curtailment based on detailed using petroleum is typically used to fill the gap. When the renewable energy supply exceeds that which

  14. Reducing current reversal time in electric motor control

    DOE Patents [OSTI]

    Bredemann, Michael V

    2014-11-04

    The time required to reverse current flow in an electric motor is reduced by exploiting inductive current that persists in the motor when power is temporarily removed. Energy associated with this inductive current is used to initiate reverse current flow in the motor.

  15. CIPT: Using Tuangou to Reduce IP Transit Costs Rade Stanojevic

    E-Print Network [OSTI]

    Gorinsky, Sergey

    transit links. In- tuitively, the less traffic of an ISP flows through those links, the lower the costCIPT: Using Tuangou to Reduce IP Transit Costs Rade Stanojevic Ignacio Castro Sergey Gorinsky prices per Mbps de- cline steadily, the overall transit costs of these ISPs remain high or even increase

  16. A neuropeptide speeds circadian entrainment by reducing intercellular synchrony

    E-Print Network [OSTI]

    Petzold, Linda R.

    A neuropeptide speeds circadian entrainment by reducing intercellular synchrony Sungwon Ana,1 local light­dark cycles. The mammalian supra- chiasmatic nucleus (SCN) generates and entrains daily predicted that phase tum- bling following brief VIP treatment would accelerate entrainment to shifted

  17. Multiple differential cryptanalysis of round-reduced PRINCE (Full version)

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Multiple differential cryptanalysis of round-reduced PRINCE (Full version) Anne Canteaut1 , Thomas, France Abstract. PRINCE is a lightweight block cipher proposed by Borghoff et al. at Asiacrypt 2012. Due attacks. Our attack uses multiple differen- tials and exploits some properties of PRINCE for recovering

  18. Solid Fuel - Oxygen Fired Combustion for Production of Nodular Reduced Iron to Reduce CO2 Emissions and Improve Energy Efficiencies

    SciTech Connect (OSTI)

    Donald R. Fosnacht; Richard F. Kiesel; David W. Hendrickson; David J. Englund; Iwao Iwasaki; Rodney L. Bleifuss; Mathew A. Mlinar

    2011-12-22

    The current trend in the steel industry is an increase in iron and steel produced in electric arc furnaces (EAF) and a gradual decline in conventional steelmaking from taconite pellets in blast furnaces. In order to expand the opportunities for the existing iron ore mines beyond their blast furnace customer base, a new material is needed to satisfy the market demands of the emerging steel industry while utilizing the existing infrastructure and materials handling capabilities. This demand creates opportunity to convert iron ore or other iron bearing materials to Nodular Reduced Iron (NRI) in a recently designed Linear Hearth Furnace (LHF). NRI is a metallized iron product containing 98.5 to 96.0% iron and 2.5 to 4% C. It is essentially a scrap substitute with little impurity that can be utilized in a variety of steelmaking processes, especially the electric arc furnace. The objective of this project was to focus on reducing the greenhouse gas emissions (GHG) through reducing the energy intensity using specialized combustion systems, increasing production and the use of biomass derived carbon sources in this process. This research examined the use of a solid fuel-oxygen fired combustion system and compared the results from this system with both oxygen-fuel and air-fuel combustion systems. The solid pulverized fuels tested included various coals and a bio-coal produced from woody biomass in a specially constructed pilot scale torrefaction reactor at the Coleraine Minerals Research Laboratory (CMRL). In addition to combustion, the application of bio-coal was also tested as a means to produce a reducing atmosphere during key points in the fusion process, and as a reducing agent for ore conversion to metallic iron to capture the advantage of its inherent reduced carbon footprint. The results from this study indicate that the approaches taken can reduce both greenhouse gas emissions and the associated energy intensity with the Linear Hearth Furnace process for converting iron ore to metallic iron nodules. Various types of coals including a bio-coal produced though torrefaction can result in production of NRI at reduced GHG levels. The process results coupled with earlier already reported developments indicate that this process technique should be evaluated at the next level in order to develop parameter information for full scale process design. Implementation of the process to full commercialization will require a full cost production analysis and comparison to other reduction technologies and iron production alternatives. The technical results verify that high quality NRI can be produced under various operating conditions at the pilot level.

  19. Improving Vehicle Efficiency, Reducing Dependence on Foreign Oil (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-03-01

    This fact sheet provides an overview of the U.S. Department of Energy's Vehicle Technologies Program. Today, the United States spends about $400 billion each year on imported oil. To realize a secure energy future, America must break its dependence on imported oil and its volatile costs. The transportation sector accounts for about 70% of U.S. oil demand and holds tremendous opportunity to increase America's energy security by reducing oil consumption. That's why the U.S. Department of Energy (DOE) conducts research and development (R and D) on vehicle technologies which can stem America's dependence on oil, strengthen the economy, and protect the environment. Hybrid-electric and plug-in hybrid-electric vehicles can significantly improve fuel economy, displacing petroleum. Researchers are making batteries more affordable and recyclable, while enhancing battery range, performance, and life. This research supports President Obama's goal of putting 1 million electric vehicles on the road by 2015. The program is also working with businesses to develop domestic battery and electric-drive component plants to improve America's economic competitiveness globally. The program facilitates deployment of alternative fuels (ethanol, biodiesel, hydrogen, electricity, propane, and natural gas) and fuel infrastructures by partnering with state and local governments, universities, and industry. Reducing vehicle weight directly improves vehicle efficiency and fuel economy, and can potentially reduce vehicle operating costs. Cost-effective, lightweight, high-strength materials can significantly reduce vehicle weight without compromising safety. Improved combustion technologies and optimized fuel systems can improve near-and mid-term fuel economy by 25% for passenger vehicles and 20% for commercial vehicles by 2015, compared to 2009 vehicles. Reducing the use of oil-based fuels and lubricants in vehicles has more potential to improve the nation's energy security than any other action; even a 1% improvement in vehicle fuel efficiency would save consumers more than $4 billion annually.

  20. Reduced Tuition for Southern New Hampshire Residents The University of Massachusetts Lowell's Proximity Regional Rates Program offers a reduced

    E-Print Network [OSTI]

    Massachusetts at Lowell, University of

    Reduced Tuition for Southern New Hampshire Residents The University of Massachusetts Lowell-qualified Southern New Hampshire students seeking a world-class University education close to home. The Proximity. Proximity Regional Program Qualifying Towns To qualify for Proximity rates, Southern New Hampshire students