Sample records for runtime systems rx-solvers

  1. Runtime verification for stochastic systems

    E-Print Network [OSTI]

    Wilcox, Cristina M

    2010-01-01T23:59:59.000Z

    We desire a capability for the safety monitoring of complex, mixed hardware/software systems, such as a semi-autonomous car. The field of runtime verification has developed many tools for monitoring the safety of software ...

  2. Implementing a parallel C++ runtime system for scalable parallel systems

    SciTech Connect (OSTI)

    Bodin, F. [Univ. of Rennes (France); Beckman, P.; Gannon, D.; Yang, S. [Indiana Univ., Bloomington, IN (United States); Kesavan, S.; Malony, A.; Mohr, B. [Univ. of Oregon, Eugene, OR (United States)

    1993-12-31T23:59:59.000Z

    pC++ is a language extension to C++ designed to allow programmers to compose ``concurrent aggregate`` collection classes which can be aligned and distributed over the memory hierarchy of a parallel machine in a manner modeled on the High Performance Fortran Forum (HPFF) directives for Fortran 90. pC++ allows the user to write portable and efficient code which will run on a wide range of scalable parallel computer systems. The first version of the compiler is a preprocessor which generates Single Program Multiple Data (SPMD) C++ code. Currently, it runs on the Thinking Machines CM-5, the Intel Paragon, the BBN TC2000, the Kendall Square Research KSR-1, and the Sequent Symmetry. In this paper the authors describe the implementation of the runtime system, which provides the concurrency and communication primitives between objects in a distributed collection. To illustrate the behavior of the runtime system they include a description and performance results on four benchmark programs.

  3. Runtime Monitoring of Distributed Systems Adrian Francalanza

    E-Print Network [OSTI]

    Pace, Gordon J.

    As systems become more complex, monolithic architec- tures are becoming less common, and distributed-based and service-oriented systems readily fit in the above architecture, as do systems adhering to the Enterpris

  4. Runtime Monitoring of Distributed Systems Adrian Francalanza

    E-Print Network [OSTI]

    Francalanza, Adrian

    As systems become more complex, monolithic architec- tures are becoming less common, and distributed-based and service-oriented systems readily fit in the above architecture, as do systems adhering to the Enterprise

  5. Runtime system library for parallel finite difference models with nesting

    SciTech Connect (OSTI)

    Michalakes, J.

    1997-03-01T23:59:59.000Z

    RSL is a parallel run-time system library for implementing regular-grid models with nesting on distributed memory parallel computers. RSL provides support for automatically decomposing multiple model domains and for redistributing work between processors at run time for dynamic load balancing. A unique feature of RSL is that processor subdomains need not be rectangular patches; rather, grid points are independently allocated to processors, allowing more precisely balanced allocation of work to processors. Communication mechanisms are tailored to the application: RSL provides an efficient high-level stencil exchange operation for updating subdomain ghost areas and interdomain communication to support two-way interaction between nest levels. RSL also provides run-time support for local iteration over subdomains, global-local index translation, and distributed I/O from ordinary Fortran record-blocked data sets. The interface to RSL supports Fortran77 and Fortran90. RSL has been used to parallelize the NCAR/Penn State Mesoscale Model (MM5).

  6. A Runtime Verification Framework for Control System Simulation

    SciTech Connect (OSTI)

    Ciraci, Selim; Fuller, Jason C.; Daily, Jeffrey A.; Makhmalbaf, Atefe; Callahan, Charles D.

    2014-08-02T23:59:59.000Z

    n a standard workflow for the validation of a control system, the control system is implemented as an extension to a simulator. Such simulators are complex software systems, and engineers may unknowingly violate constraints a simulator places on extensions. As such, errors may be introduced in the implementation of either the control system or the simulator leading to invalid simulation results. This paper presents a novel runtime verification approach for verifying control system implementations within simulators. The major contribution of the approach is the two-tier specification process. In the first tier, engineers model constraints using a domain-specific language tailored to modeling a controller’s response to changes in its input. The language is high-level and effectively hides the implementation details of the simulator, allowing engineers to specify design-level constraints independent of low-level simulator interfaces. In the second tier, simulator developers provide mapping rules for mapping design-level constraints to the implementation of the simulator. Using the rules, an automated tool transforms the design-level specifications into simulator-specific runtime verification specifications and generates monitoring code which is injected into the implementation of the simulator. During simulation, these monitors observe the input and output variables of the control system and report changes to the verifier. The verifier checks whether these changes follow the constraints of the control system. We describe application of this approach to the verification of the constraints of an HVAC control system implemented with the power grid simulator GridLAB-D.

  7. Adapting Component-based Systems at Runtime via Policies with Temporal Patterns

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Adapting Component-based Systems at Runtime via Policies with Temporal Patterns Olga Kouchnarenko1 Aspect of Component Software - FACS 2013, Nanchang : Chine (2013)" #12;2 O. Kouchnarenko, J-F. Weber

  8. Runtime Tracing of The Community Earth System Model: Feasibility and Benefits

    SciTech Connect (OSTI)

    Wang, Dali [ORNL] [ORNL; Domke, Jens [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    Community Earth System Models (CESM) is one of US's leading earth system modeling systems, which has over decades of development history and embraced by large, active user communities. In this paper, we first review the history of CESM software development and layout the general objectives of performance analysis. Then we present an offline global community land model simulation within the CESM framework to demonstrate the procedure of runtime tracing of CESM using the Vampir toolset. Finally, we explain the benefits of runtime tracing to the general earth system modeling community. We hope those considerations can also be beneficial to many other modeling research programs involving legacy high-performance computing applications.

  9. Run-time Modeling and Estimation of Operating System Power Consumption

    E-Print Network [OSTI]

    John, Lizy Kurian

    Run-time Modeling and Estimation of Operating System Power Consumption Tao Li Department computing systems point to the need for power modeling and estimation for all components of a system software power evaluation, as well as power management (e.g. dynamic thermal control and equal energy

  10. Enforcing Safety Requirements for Industrial Automation Systems at Runtime Position Paper

    E-Print Network [OSTI]

    Enforcing Safety Requirements for Industrial Automation Systems at Runtime Position Paper Wikan {firstname.lastname}@tuwien.ac.at Abstract--Current industrial automation systems are becom- ing more safety requirements of industrial automation systems may lead to high risks if not addressed properly

  11. A Run-Time System for Programming Out-of-Core Matrix Algorithms-by-Tiles on

    E-Print Network [OSTI]

    Batory, Don

    A Run-Time System for Programming Out-of-Core Matrix Algorithms-by-Tiles on Multithreaded. Quintana-Ort´i Robert van de Geijn Abstract Out-of-core implementations of algorithms for dense matrix and data movement in the hands of a run-time system. Remarkable performance is demonstrated

  12. Routine based OS-aware Microprocessor Resource Adaptation for Run-time Operating System Power Saving

    E-Print Network [OSTI]

    John, Lizy Kurian

    workloads (see section 2 for detail), making it a major power consumer. The proportion of the OS power, such as thermal sensor reading, energy accounting and power control for memory and I/O devices [2]. ClearlyRoutine based OS-aware Microprocessor Resource Adaptation for Run-time Operating System Power

  13. A Framework for Adaptable Operating and Runtime Systems

    SciTech Connect (OSTI)

    Sterling, Thomas

    2014-03-04T23:59:59.000Z

    The emergence of new classes of HPC systems where performance improvement is enabled by Moore’s Law for technology is manifest through multi-core-based architectures including specialized GPU structures. Operating systems were originally designed for control of uniprocessor systems. By the 1980s multiprogramming, virtual memory, and network interconnection were integral services incorporated as part of most modern computers. HPC operating systems were primarily derivatives of the Unix model with Linux dominating the Top-500 list. The use of Linux for commodity clusters was first pioneered by the NASA Beowulf Project. However, the rapid increase in number of cores to achieve performance gain through technology advances has exposed the limitations of POSIX general-purpose operating systems in scaling and efficiency. This project was undertaken through the leadership of Sandia National Laboratories and in partnership of the University of New Mexico to investigate the alternative of composable lightweight kernels on scalable HPC architectures to achieve superior performance for a wide range of applications. The use of composable operating systems is intended to provide a minimalist set of services specifically required by a given application to preclude overheads and operational uncertainties (“OS noise”) that have been demonstrated to degrade efficiency and operational consistency. This project was undertaken as an exploration to investigate possible strategies and methods for composable lightweight kernel operating systems towards support for extreme scale systems.

  14. Run-Time Security Traceability for Evolving Systems1

    E-Print Network [OSTI]

    Jurjens, Jan

    , integrity, authentication and others) and security assumptions on the system environment, can be specified applications (e.g., at BMW [5] and O2 (Germany) [6]). However, it is not enough that the specification

  15. RSL: A parallel Runtime System Library for regional atmospheric models with nesting

    SciTech Connect (OSTI)

    Michalakes, J.G.

    1997-08-01T23:59:59.000Z

    RSL is a parallel runtime system library developed at Argonne National Laboratory that is tailored to regular-grid atmospheric models with mesh refinement in the form of two-way interacting nested grids. RSL provides high-level stencil and interdomain communication, irregular domain decomposition, automatic local/global index translation, distributed I/O, and dynamic load balancing. RSL was used with Fortran90 to parallelize a well-known and widely used regional weather model, the Penn State/NCAR Mesoscale model.

  16. A Survey of Systems for Detecting Serial Run-Time Errors

    E-Print Network [OSTI]

    Luecke, Glenn R.

    Performance Computing Group Glenn R. Luecke, James Coyle, Jim Hoekstra, Marina Kraeva, Ying Li, Olga Taborskaia, and Yanmei Wang {grl, jjc, hoekstra, kraeva, yingli, olga, yanmei}@iastate.edu Revised February-commercial software products to detect serial run-time errors in C and C++ programs, to issue meaningful messages

  17. Runtime verification of object lifetime specifications

    E-Print Network [OSTI]

    Benjamin, Zev (Zev A.)

    2009-01-01T23:59:59.000Z

    This thesis reports on the implementation of a runtime verification system for object lifetime specifications. This system is used to explore and evaluate the expressiveness object lifetime specifications. Object lifetime ...

  18. ModelPlex: Verified Runtime Validation of Verified Cyber-Physical System Models

    E-Print Network [OSTI]

    Platzer, André

    dynamics. In CPS, models are essential; but any model we could possibly build necessarily deviates from. In CPS, models are essential; but a cyber- physical systems (CPS) safe. Formal methods make strong guarantees about the system behavior

  19. ModelPlex: Verified Runtime Validation of Verified Cyber-Physical System Models

    E-Print Network [OSTI]

    -physical systems (CPS) safe. Formal methods make strong guarantees about the system behavior if accurate models of the sys- tem can be obtained, including models of the controller and of the physical dynamics. In CPS, models are essential; but any model we could possibly build necessarily deviates from the real world

  20. Renewable Electric Plant Information System user interface manual: Paradox 7 Runtime for Windows

    SciTech Connect (OSTI)

    NONE

    1996-11-01T23:59:59.000Z

    The Renewable Electric Plant Information System (REPiS) is a comprehensive database with detailed information on grid-connected renewable electric plants in the US. The current version, REPiS3 beta, was developed in Paradox for Windows. The user interface (UI) was developed to facilitate easy access to information in the database, without the need to have, or know how to use, Paradox for Windows. The UI is designed to provide quick responses to commonly requested sorts of the database. A quick perusal of this manual will familiarize one with the functions of the UI and will make use of the system easier. There are six parts to this manual: (1) Quick Start: Instructions for Users Familiar with Database Applications; (2) Getting Started: The Installation Process; (3) Choosing the Appropriate Report; (4) Using the User Interface; (5) Troubleshooting; (6) Appendices A and B.

  1. Using Run-Time Predictions to Estimate Queue Wait Times and Improve Scheduler Performance

    E-Print Network [OSTI]

    Feitelson, Dror

    that using our run-time predictor results in lower mean wait times for the workloads with higher o ered loads of the systems we are simulating.We also nd that using our run-time predictors result in mean wait timesUsing Run-Time Predictions to Estimate Queue Wait Times and Improve Scheduler Performance Warren

  2. Barcelona: A design & runtime environment for declarative artifact-centric BPM

    E-Print Network [OSTI]

    California at Santa Barbara, University of

    -sourced [2] ArtiFact system supports both design-time and run-time environments for GSM. BothBarcelona: A design & runtime environment for declarative artifact-centric BPM Fenno (Terry) Heath changes as they move through those operations. A business artifact type is modeled using (a

  3. Traffic-and Thermal-Aware Run-Time Thermal Management Scheme for 3D NoC Systems

    E-Print Network [OSTI]

    Hung, Shih-Hao

    C), the combination of NoC and die-stacking 3D IC technology, is motivated to achieve lower latency, lower power consumption, and higher network bandwidth. However, the length of heat conduction path and power density per the vulnerability of the system in performance, power, reliability, and cost. To ensure both thermal safety and less

  4. Runtime Adaptation for Autonomic Heterogeneous Computing | ornl...

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

    goal is to make the complex functions of heterogeneous computing autonomic, handling load balancing, memory coherence and other performance critical factors in the runtime. This...

  5. Runtime Tuning Options on Franklin

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs QuickRunning onRuntime Tuning

  6. Runtime Tuning Options on Hopper

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs QuickRunning onRuntime

  7. A near-Zero Run-time Energy Overhead within a Computation Outsourcing Framework for Energy Management in Mobile Devices

    E-Print Network [OSTI]

    Helal, Abdelsalam

    with a run-time monitoring system that consumes an extremely low amount of energy (near-Zero). This near Monitor, Battery Monitor. 1. Introduction Energy/Power management in mobile devices has been and continues incurring a near-Zero run-time overhead. Key Words- Energy Management, Outsourcing, Smart Spaces, Energy

  8. Runtime Detection of C-Style Errors in UPC Code

    SciTech Connect (OSTI)

    Pirkelbauer, P; Liao, C; Panas, T; Quinlan, D

    2011-09-29T23:59:59.000Z

    Unified Parallel C (UPC) extends the C programming language (ISO C 99) with explicit parallel programming support for the partitioned global address space (PGAS), which provides a global memory space with localized partitions to each thread. Like its ancestor C, UPC is a low-level language that emphasizes code efficiency over safety. The absence of dynamic (and static) safety checks allows programmer oversights and software flaws that can be hard to spot. In this paper, we present an extension of a dynamic analysis tool, ROSE-Code Instrumentation and Runtime Monitor (ROSECIRM), for UPC to help programmers find C-style errors involving the global address space. Built on top of the ROSE source-to-source compiler infrastructure, the tool instruments source files with code that monitors operations and keeps track of changes to the system state. The resulting code is linked to a runtime monitor that observes the program execution and finds software defects. We describe the extensions to ROSE-CIRM that were necessary to support UPC. We discuss complications that arise from parallel code and our solutions. We test ROSE-CIRM against a runtime error detection test suite, and present performance results obtained from running error-free codes. ROSE-CIRM is released as part of the ROSE compiler under a BSD-style open source license.

  9. Run-Time Library Routines Reference

    E-Print Network [OSTI]

    California at San Diego, University of

    MDS Run-Time Library Routines Reference Manual February 1993 Software Version: MDS 5.2 VAX.S.A. The following are trademarks of Digitial Equipment Corporation: CDD DECnet VAX DATATRIEVE DECUS VAXcluster DEC MicroVAX VAX Information Architecture DEC/CMS MicroVMS VMS DEC/MMS Rdb/VMS VT IDL (Interactive Data

  10. Transparent Runtime Adaptability for BPEL Processes

    E-Print Network [OSTI]

    Binder, Walter

    in the case of service failure. BPEL's support for dynamic service binding is coupled with the process busi.binder@unisi.ch Abstract. Dynamic service binding is essential for runtime adaptabil- ity of BPEL processes, particularly- ness logic, requiring the process developer to deal with dynamic service selection and failure recovery

  11. Compiler And Runtime Support For Predictive Control Of Power And Cooling

    E-Print Network [OSTI]

    Dietz, Henry G. "Hank"

    1 Compiler And Runtime Support For Predictive Control Of Power And Cooling Henry G. Dietz William R clusters make significant demands on the power and cooling infrastructure. Minimizing the impact achieving the best system performance by predicting and avoiding power and cooling problems. Although

  12. A Unified Approach to Runtime Performance and Power Optimization...

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

    A Unified Approach to Runtime Performance and Power Optimization in Adaptive Processors using Support Vector Regression Event Sponsor: Mathematics and Computing Science Seminar...

  13. Run-time optimization of adaptive irregular applications

    E-Print Network [OSTI]

    Yu, Hao

    2004-11-15T23:59:59.000Z

    adaptive irregular applications for parallel execution, a common observation is that the effectiveness of the optimizing transformations depends on programs' input data and their dynamic phases. This dissertation presents a set of run-time optimization...

  14. Checking Design Constraints at Run-time Using OCL and AspectJ

    E-Print Network [OSTI]

    Cheon, Yoonsik

    Roach, and Cuauhtemoc Munoz TR #09-35 December 2009 Keywords: design constraints, runtime checking Design Constraints at Run-time Using OCL and AspectJ Yoonsik Cheon (1) , Carmen Avila (1) , Steve Roach

  15. Transparent runtime parallelization of the R scripting language

    SciTech Connect (OSTI)

    Yoginath, Srikanth B [ORNL

    2011-01-01T23:59:59.000Z

    Scripting languages such as R and Matlab are widely used in scientific data processing. As the data volume and the complexity of analysis tasks both grow, sequential data processing using these tools often becomes the bottleneck in scientific workflows. We describe pR, a runtime framework for automatic and transparent parallelization of the popular R language used in statistical computing. Recognizing scripting languages interpreted nature and data analysis codes use pattern, we propose several novel techniques: (1) applying parallelizing compiler technology to runtime, whole-program dependence analysis of scripting languages, (2) incremental code analysis assisted with evaluation results, and (3) runtime parallelization of file accesses. Our framework does not require any modification to either the source code or the underlying R implementation. Experimental results demonstrate that pR can exploit both task and data parallelism transparently and overall has better performance as well as scalability compared to an existing parallel R package that requires code modification.

  16. A microprocessor-based run-time I/0 processor

    E-Print Network [OSTI]

    White, Steven Wayne

    1979-01-01T23:59:59.000Z

    A MICROPROCESSOR-BASED RUN-TIME I/O PROCESSOR A Thesis by STEVEN WAYNE WHITE Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1979 Major... Subject: Electrical Engineering A MICROPROCESSOR-BASED RUN-TIME I/O PROCESSOR A Thesis by STEVEN WAYNE WHITE Approved as to style and content by: (Chairman of Commit ee) (Co-chai rman of Committee) (Member) (Member) (He of Dep rtment) December...

  17. Efficient Runtime-Enforcement Techniques for Policy Weaving

    E-Print Network [OSTI]

    Ganapathy, Vinod

    Efficient Runtime-Enforcement Techniques for Policy Weaving Richard Joiner , Thomas Reps, , Somesh, NY, USA IBM Research, New Delhi, India Rutgers University, Piscataway, NJ, USA {joiner,reps,jha}@cs.wisc.edu, mohan.dhawan@in.ibm.com, vinodg@cs.rutgers.edu ABSTRACT Policy weaving is a program

  18. Optimizing Marshalling by Run-Time Program Generation

    E-Print Network [OSTI]

    Kamin, Sam

    Optimizing Marshalling by Run-Time Program Generation Bari¸s Aktemur1 , Joel Jones2 , Samuel Kamin1. Saving the internal data of an application in an external form is called marshalling. A generic marshaller is difficult to optimize because the format of the data that will be marshalled is unknown

  19. A comparative critical analysis of modern task-parallel runtimes.

    SciTech Connect (OSTI)

    Wheeler, Kyle Bruce; Stark, Dylan; Murphy, Richard C. [Micron Technology, Inc., Boise, ID

    2012-12-01T23:59:59.000Z

    The rise in node-level parallelism has increased interest in task-based parallel runtimes for a wide array of application areas. Applications have a wide variety of task spawning patterns which frequently change during the course of application execution, based on the algorithm or solver kernel in use. Task scheduling and load balance regimes, however, are often highly optimized for specific patterns. This paper uses four basic task spawning patterns to quantify the impact of specific scheduling policy decisions on execution time. We compare the behavior of six publicly available tasking runtimes: Intel Cilk, Intel Threading Building Blocks (TBB), Intel OpenMP, GCC OpenMP, Qthreads, and High Performance ParalleX (HPX). With the exception of Qthreads, the runtimes prove to have schedulers that are highly sensitive to application structure. No runtime is able to provide the best performance in all cases, and those that do provide the best performance in some cases, unfortunately, provide extremely poor performance when application structure does not match the scheduler's assumptions.

  20. SPIRAL: JOINT RUNTIME AND ENERGY OPTIMIZATION OF LINEAR TRANSFORMS Marek Telgarsky, James C. Hoe, Jose M. F. Moura

    E-Print Network [OSTI]

    Moura, José

    : (1) have large impact on the runtime and en- ergy of computing the discrete Fourier transformSPIRAL: JOINT RUNTIME AND ENERGY OPTIMIZATION OF LINEAR TRANSFORMS Marek Telgarsky, James C. Hoe simultaneous runtime, energy and/or power constraints. Hence, in addition to runtime, power and energy

  1. 3700713 IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, VOL. 19, NO. 2, MARCH/APRIL 2013 Runtime Management of Laser Power

    E-Print Network [OSTI]

    Joshi, Ajay

    the multibus NoC architecture and runtime laser power management technique on a 64-core system running NAS by more than 49% with minimal impact on the system performance. Index Terms--Laser power management, many and several times lower energy cost compared to the projected electrical link technology [7], [22

  2. The Importance of Run-time Error Detection Glenn R. Luecke 1

    E-Print Network [OSTI]

    Luecke, Glenn R.

    Iowa State University's High Performance Computing Group, Iowa State University, Ames, Iowa 50011, USA State University's High Performance Computing Group for evaluating run-time error detection capabilities

  3. Econometric Feedback for Runtime Risk Management in VoIP Architectures

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Econometric Feedback for Runtime Risk Management in VoIP Architectures Oussema Dabbebi, R at automatically adapting these parameters based on an econometric feedback mechanism. We mathematically describe the configuration of such risk models, by refining at runtime the model parameters based on an econometric feedback

  4. Compiler and Runtime Support for Shared Memory Parallelization of Data Mining Algorithms

    E-Print Network [OSTI]

    Agrawal, Gagan

    machines. This paper reports on runtime and compiler support for easing im­ plementations of data miningCompiler and Runtime Support for Shared Memory Parallelization of Data Mining Algorithms #3 agrawal@cis.ohio­ state.edu ABSTRACT Data mining techniques focus on finding novel and useful patterns

  5. Runtime Support For Maximizing Performance on Multicore Systems

    E-Print Network [OSTI]

    Pusukuri, Kishore Kumar

    2012-01-01T23:59:59.000Z

    SPEC OMP; SPEC JBB2005 ; kmeans and pca from Phoenix . TheOMP [11]; and five programs kmeans (KM), pca (PCA), matrix-

  6. Engineering Runtime Requirements-Monitoring Systems using MDA Technologies

    E-Print Network [OSTI]

    Emmerich, Wolfgang

    Emmerich Dept. of Computer Science, University College London Gower St, London, WC1E 6BT, UK {j.skene|w.emmerich

  7. Runtime Support For Maximizing Performance on Multicore Systems

    E-Print Network [OSTI]

    Pusukuri, Kishore Kumar

    2012-01-01T23:59:59.000Z

    execution techniques for smt mul- tiprocessor architectures,scheduling on smp-cmp-smt multiprocessors, in Proceedings ofcode for quad-core SMT multiprocessor architectures. The

  8. An Aspect-Based Approach to Checking Design Constraints at Run-time

    E-Print Network [OSTI]

    Cheon, Yoonsik

    , Steve Roach, Cuauhtemoc Munoz, Neith Estrada, Valeria Fierro, and Jessica Romo TR #08-38 November 2008 Design Constraints at Run-time Yoonsik Cheon, Carmen Avila, Steve Roach, Cuauhtemoc Munoz, Neith Estrada

  9. Exploring the Potential of Performance Monitoring Hardware to Support Run-time

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    through on-chip Hardware Performance Monitoring (HPM) support, it is not clear whether this tech- nology can effectively guide a run-time optimization framework. To date the HPM information of various

  10. Machine Learning Based Online Performance Prediction for Runtime Parallelization and Task Scheduling

    SciTech Connect (OSTI)

    Li, J; Ma, X; Singh, K; Schulz, M; de Supinski, B R; McKee, S A

    2008-10-09T23:59:59.000Z

    With the emerging many-core paradigm, parallel programming must extend beyond its traditional realm of scientific applications. Converting existing sequential applications as well as developing next-generation software requires assistance from hardware, compilers and runtime systems to exploit parallelism transparently within applications. These systems must decompose applications into tasks that can be executed in parallel and then schedule those tasks to minimize load imbalance. However, many systems lack a priori knowledge about the execution time of all tasks to perform effective load balancing with low scheduling overhead. In this paper, we approach this fundamental problem using machine learning techniques first to generate performance models for all tasks and then applying those models to perform automatic performance prediction across program executions. We also extend an existing scheduling algorithm to use generated task cost estimates for online task partitioning and scheduling. We implement the above techniques in the pR framework, which transparently parallelizes scripts in the popular R language, and evaluate their performance and overhead with both a real-world application and a large number of synthetic representative test scripts. Our experimental results show that our proposed approach significantly improves task partitioning and scheduling, with maximum improvements of 21.8%, 40.3% and 22.1% and average improvements of 15.9%, 16.9% and 4.2% for LMM (a real R application) and synthetic test cases with independent and dependent tasks, respectively.

  11. On the Suitability of MPI as a PGAS Runtime

    SciTech Connect (OSTI)

    Daily, Jeffrey A.; Vishnu, Abhinav; Palmer, Bruce J.; van Dam, Hubertus JJ; Kerbyson, Darren J.

    2014-12-18T23:59:59.000Z

    Partitioned Global Address Space (PGAS) models are emerging as a popular alternative to MPI models for designing scalable applications. At the same time, MPI remains a ubiquitous communication subsystem due to its standardization, high performance, and availability on leading platforms. In this paper, we explore the suitability of using MPI as a scalable PGAS communication subsystem. We focus on the Remote Memory Access (RMA) communication in PGAS models which typically includes {\\em get, put,} and {\\em atomic memory operations}. We perform an in-depth exploration of design alternatives based on MPI. These alternatives include using a semantically-matching interface such as MPI-RMA, as well as not-so-intuitive interfaces such as MPI two-sided with a combination of multi-threading and dynamic process management. With an in-depth exploration of these alternatives and their shortcomings, we propose a novel design which is facilitated by the data-centric view in PGAS models. This design leverages a combination of highly tuned MPI two-sided semantics and an automatic, user-transparent split of MPI communicators to provide asynchronous progress. We implement the asynchronous progress ranks approach and other approaches within the Communication Runtime for Exascale which is a communication subsystem for Global Arrays. Our performance evaluation spans pure communication benchmarks, graph community detection and sparse matrix-vector multiplication kernels, and a computational chemistry application. The utility of our proposed PR-based approach is demonstrated by a 2.17x speed-up on 1008 processors over the other MPI-based designs.

  12. A Theoretical Runtime and Empirical Analysis of Different Alternating Variable Searches for Search-Based Testing

    E-Print Network [OSTI]

    McMinn, Phil

    A Theoretical Runtime and Empirical Analysis of Different Alternating Variable Searches for Search im- prove its performance. This paper proposes two new local searches that may be used in conjunction], the Alternating Variable Method (AVM) is a simple local search strategy has been shown to be surprisingly

  13. Proving the Absence of RunTime Errors in SafetyCritical Avionics Code

    E-Print Network [OSTI]

    Cousot, Patrick

    , time­triggered, real­time, safety critical, embedded software as found in earth transportation, nuclearProving the Absence of Run­Time Errors in Safety­Critical Avionics Code Patrick Cousot École is not acceptable in safety and mission crit­ ical applications. An avenue is therefore opened for formal methods

  14. Distributed Cactus Stacks: Runtime Stack-Sharing Support for Distributed Parallel Programs1

    E-Print Network [OSTI]

    Dasgupta, Partha

    a shared memory machine. This approach is supposedly more natural than the message passing method used- tolerance and load balancing [Sar97, Das97]. 2. Related Work Shared memory parallel processingDistributed Cactus Stacks: Runtime Stack-Sharing Support for Distributed Parallel Programs1 1

  15. Run-Time Generation of HPS Microinstructions From a VAX Instruction Stream

    E-Print Network [OSTI]

    Melvin, Stephen

    Run-Time Generation of HPS Microinstructions From a VAX Instruction Stream Yale N. Patt, Stephen W of California, Berkeley Berkeley, CA 94720 ABSTRACT The VAX architecture is a popular ISP archi- tecture specifications. However, it has been argued that the VAX has specific charac- teristics which preclude a very

  16. Runtime Monitoring of Software Energy Hotspots Adel Noureddine1,2

    E-Print Network [OSTI]

    Boyer, Edmond

    to their energy consumption. In this domain, most of the state-of-the-art solutions concentrate on coarse-grained approaches to mon- itor the energy consumption of a device or a process. How- ever, none of the existing consumption. In this paper, we therefore report on a fine-grained runtime energy monitoring framework we de

  17. A Prediction Method for Job Runtimes on Shared Processors: Survey, Statistical Analysis and New

    E-Print Network [OSTI]

    van der Mei, Rob

    A Prediction Method for Job Runtimes on Shared Processors: Survey, Statistical Analysis and New predictions of the expected computation times of those jobs on remote hosts. Currently, there are no effective prediction methods available that cope with the ever-changing running times of jobs on a grid environment

  18. A Programming Environment with Runtime Energy Characterization for Energy-Aware Applications

    E-Print Network [OSTI]

    Li, Zhiyuan

    A Programming Environment with Runtime Energy Characterization for Energy-Aware Applications the construction of energy-aware applications. We observe that energy-aware programs may identify different ways the procedure and general guidelines for using the environ- ment to construct energy-aware programs

  19. Compiler and Runtime Support for Shared Memory Parallelization of Data Mining Algorithms

    E-Print Network [OSTI]

    Agrawal, Gagan

    Compiler and Runtime Support for Shared Memory Parallelization of Data Mining Algorithms Xiaogang, Columbus OH 43210¡xgli,jinr,agrawal¢@cis.ohio-state.edu Abstract. Data mining techniques focus on finding support for developing scalable implementa- tions of data mining algorithms. Our work encompasses shared

  20. A timeshared, runtime reconfigurable hardware co-processing architecture

    E-Print Network [OSTI]

    Gelb, Benjamin S

    2009-01-01T23:59:59.000Z

    The constant desire for increased performance in microprocessor systems has led to the need for specialized hardware cores to accelerate specific computational tasks. In this thesis, we explore the potential of using FPGA ...

  1. Combining Testing and Runtime Verification Kevin Falzon1

    E-Print Network [OSTI]

    Pace, Gordon J.

    , University of Malta gordon.pace@um.edu.mt Abstract. Testing is an established and integral part of the system and Research (BMBF) within EC-SPRIDE, and the Strategic Educa- tional Pathways Scholarship Scheme (Malta

  2. Towards a Model-Driven Infrastructure for Runtime Monitoring

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the ongoing Connect European Project. 1 Introduction Nowadays software systems are increasingly pervasive of Computer Science, University of L'Aquila, Coppito (AQ), Italy antinisca.dimarco@univaq.it 3 SAP Research, Sophia Antipolis, France antonino.sabetta@sap.com Abstract. In modern pervasive dynamic and eternal

  3. Transformation Nets -A Runtime Model for Transformation Languages

    E-Print Network [OSTI]

    Hochreiter, Sepp

    as first-class arti- facts throughout the software lifecycle requiring the availability of proper of Software Technology and Interactive Systems Vienna University of Technology Favoritenstraße 9)--called Transformation Nets--for the development, execution and debugging of model transformations on a high level

  4. Reconfiguration of a Distributed Information Fusion System Eric Benoit, Marc-Philippe Huget,

    E-Print Network [OSTI]

    Boyer, Edmond

    is used for only one computation of the outputs, while a param- eter is a sustained value, used for each is to define a runtime framework for Dynamic Distributed Information Fu- sion System (DDIFS). This framework

  5. Distributed System Contract Monitoring Adrian Francalanza, Andrew Gauci, Gordon J. Pace

    E-Print Network [OSTI]

    Francalanza, Adrian

    of Computer Science, University of Malta Abstract Runtime verification of distributed systems poses various is partially funded by the Strategic Educational Pathways Scholarship Scheme (Malta). The scholarship is part

  6. Towards a multifrontal QR factorization for heterogeneous architectures over runtime systems

    E-Print Network [OSTI]

    Uçar, Bora

    , computer architectures for high performance computing have considerably evolved toward heterogeneous. An example of popular heterogeneous architectures widely adopted in the high performance computing domain

  7. The Grumps Architecture: Run-time Evolution in a Large Scale Distributed System

    E-Print Network [OSTI]

    Evans, J.H.

    Evans,J.H. Dickman,P. Atkinson,M. Proceedings of the Workshop on Engineering Complex Object-Oriented Solutions for Evolution (ECOOSE), held as part of OOPSLA 2001

  8. runtime error message: "readControlMsg: System returned error Connection

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron4 Self-Scrubbing:,, ,Development ofrluyendi AmesProgramtimed out on TCP

  9. Aurora: A Data Stream Management System , D. Carney

    E-Print Network [OSTI]

    Cherniack, Mitch

    Aurora: A Data Stream Management System D. Abadi , D. Carney§ , U. Cetintemel§ , M. Cherniack , C.I.T. Abstract The Aurora system [1] is an experimental data stream management system with a fully functional to demonstrate the Aurora system with its development environment and runtime system, with several example

  10. Autonomic Reactive Systems via Online Learning Sanjit A. Seshia

    E-Print Network [OSTI]

    California at Irvine, University of

    Autonomic Reactive Systems via Online Learning Sanjit A. Seshia Department of Electrical@eecs.berkeley.edu Abstract-- Reactive systems are those that maintain an ongoing interaction with their environment- covering a class of reactive systems from run-time failures. This class of systems comprises those whose

  11. Holistic Data-Driven Diagnosis for Dependable Automotive Systems

    E-Print Network [OSTI]

    Rajkumar, Ragunathan "Raj"

    The automotive industry has become steadily more reliant on software- intensive distributed systems to impleHolistic Data-Driven Diagnosis for Dependable Automotive Systems Patrick E. Lanigan Carnegie Mellon, emer- gent behavior will still appear at runtime in dependable automotive systems. Such behavior occurs

  12. Eon: A Language and Runtime System for Perpetual Systems Jacob Sorber Alexander Kostadinov Matthew Garber Matthew Brennan

    E-Print Network [OSTI]

    Berger, Emery

    being connected to a power source by harvesting environmental energy from motion, the sun, wind, or heat 2007 ACM 1-59593-763-6/07/0011...$5.00 and a solar-powered camera sensor for remote, ad-hoc de energy [17, 27, 21]. Har- vesting environmental energy enables the deployment of large-scale remote

  13. Model-Integrated Embedded Systems Akos Ledeczi, Arpad Bakay, and Miklos Maroti

    E-Print Network [OSTI]

    Maróti, Miklós

    and systems management during the entire life cycle of the system [7]. Partly to accomplish these and also software systems. Making the design- time models available at run-time benefits the development of dynamicModel-Integrated Embedded Systems Akos Ledeczi, Arpad Bakay, and Miklos Maroti Institute

  14. Towards Run-time Flexibility for Process Families: Open Issues and Research Challenges

    E-Print Network [OSTI]

    Ulm, Universität

    process models, e.g., ITIL in IT service management, reference processes in SAP's ERP system, or medical

  15. Runtime Power Monitoring in High-End Processors: Methodology and Empirical Data

    E-Print Network [OSTI]

    Martonosi, Margaret

    systems, measur- ing power dissipation of real, running systems has become crucial for hardware and software system research and de- sign. Live power measurements are imperative for studies requiring our technique for a coor- dinated measurement approach that combines real total power measurement

  16. CLIPPER: Counter-based Low Impact Processor Power Estimation at Run-time

    E-Print Network [OSTI]

    New South Wales, University of

    -time power/energy data has been presented. Current measurement systems draw too much power to be used is dif- ficult as measurement systems for power and energy usage draw too much power themselves, making the knowledge of processor power/energy consumption at run- time. So far, no efficient method to provide run

  17. Evaluating the Capability of Compilers and Tools to Detect Serial and Parallel Run-time Errors

    E-Print Network [OSTI]

    Luecke, Glenn R.

    , Elizabeth Kleiman, Olga Weiss, Andre Wehe, Melissa Yahya # Iowa State University's High Performance of system software to detect and issue error messages that help programmers quickly fix serial and parallel using the new system software to rted.project@iastate.edu so they can be posted on this web site. II

  18. A Brief Account of Runtime Verification Martin Leucker and Christian Schallhart

    E-Print Network [OSTI]

    Leucker, Martin

    to well-known verification techniques like model checking and testing is provided, and applications-skid system must speed with exactly the right velocity to stabi- lize the car. Moreover, for a power plant;verification is particularly challenging as the overall behavior of such systems depends heavily

  19. RAIDE for Engineering Architecture-Based Self-Adaptive Systems Shang-Wen Cheng, David Garlan, and Bradley Schmerl

    E-Print Network [OSTI]

    Garlan, David

    engineering process. The framework (see Figure 1) monitors a target system and reasons about appropriate is an approach for engineering self- adaptive systems, with run-time, closed-loop control over target systems to monitor, detect, decide, and act on opportunities for system improvement. RAIDE enables adaptation

  20. Modeling and Dynamic Management of 3D Multicore Systems with Liquid Cooling

    E-Print Network [OSTI]

    Simunic, Tajana

    Modeling and Dynamic Management of 3D Multicore Systems with Liquid Cooling Ayse K. Coskun , Jos liquid cooling. Furthermore, for systems capable of varying the coolant flow rate at runtime, our University of Madrid, Spain. Embedded Systems Laboratory (ESL), Ecole Polytechnique F´ed´erale de Lausanne

  1. R3TOS: A Reliable Reconfigurable Real-Time Operating System Xabier Iturbe1,2

    E-Print Network [OSTI]

    Arslan, Tughrul

    R3TOS: A Reliable Reconfigurable Real-Time Operating System Xabier Iturbe1,2 , Khaled Benkrid1-Time Operating System (R3TOS) are presented. The main objective of R3TOS is to create an infrastruc- ture faults in the underlying chip's silicon at runtime (true fault re- moval from system). R3TOS is aimed

  2. 0-7803-8808-9/05/$20.00 2005 IEEE An Environment for Runtime Power Monitoring

    E-Print Network [OSTI]

    Milenkovi, Aleksandar

    -awareness have become a focus of a number of research efforts, as sensor network nodes must operate on batteries measurements and characterization of real existing systems are crucial for studies that target power design constraint in wireless sensor networks as they are typically battery operated. To extend each node

  3. WICT PROCEEDINGS, NOVEMBER 2009 1 Offline Runtime Verification with Real-Time Properties: A Case Study

    E-Print Network [OSTI]

    Pace, Gordon J.

    Study Christian Colombo Dept. of Computer Science University of Malta christian.colombo@um.edu.mt Gordon J. Pace Dept. of Computer Science University of Malta gordon.pace@um.edu.mt Patrick Abela Ixaris Ltd Malta patrick.abela@ixaris.com Abstract Online monitoring of software systems has lately been gaining

  4. Architectures of Automotive Electrical and Electronics (E/E) Systems

    E-Print Network [OSTI]

    Navet, Nicolas

    Systems What they look like today ­ example of BMW and PSA Constraints in their design ­ the case at Volvo-layered run-time environment (AUTOSAR), multi-source software, multi-core CPUs, etc © 2010 N. Navet INRIA / RTaW - 3 Strong costs, safety, reliability, timetomarket, reusability, legal constraints ! BMW 7

  5. Runtime System for I/O Staging in Support of In-Situ Processing of Extreme Scale Data

    SciTech Connect (OSTI)

    Schwan, Karsten [Georgia Institute of Technology

    2013-11-01T23:59:59.000Z

    Our research in this project focused on creating and evaluating an I/O infrastructure and tools for extreme-scale applications and machines so that scientists can reduce their time to discovery at small cost in machine resources and consequent power consumption. We wanted to provide tools that are highly scalable, portable, and easy-to-use, so that scientists can gain control of their science, and concentrate on producing important scientific discovery in their own domain. Accelerating the rate of insight and scientific productivity, therefore, demands new solutions to managing the avalanche of data expected at extreme scale.

  6. Server Operating Systems Frans Kaashoek, Dawson Engler, Gregory Ganger, and Deborah Wallach

    E-Print Network [OSTI]

    Ganger, Greg

    Server Operating Systems Frans Kaashoek, Dawson Engler, Gregory Ganger, and Deborah Wallach M.I.T. Laboratory Computer Science fkaashoek,engler,ganger,kerrg@lcs.mit.edu Abstract introduce server operating systems, which sets abstractions runtime support specialized, high­ performance server applications. have

  7. Applying OMG D&C Specification and ECA Rules for Autonomous Distributed Component-based Systems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ´er´emy Dubus, Philippe Merle INRIA-Futurs Projet Jacquard / LIFL Universit´e des Sciences et Technologies de used to ease design of complex distributed systems. Nevertheless, at runtime, models remain useless of the designer is drastically simplified. Unfortunately, the models of an application are useless once the system

  8. An FPGA-based Distributed Computing System with Power and Thermal Management Capabilities

    E-Print Network [OSTI]

    Qiu, Qinru

    An FPGA-based Distributed Computing System with Power and Thermal Management Capabilities Hao Shen of New York Binghamton, NY, 13902, USA ABSTRACT Runtime power and thermal management has attracted step in the research of distributed power and thermal management. Compared to software simulation

  9. Multiple Temporal Consistency States for Dynamical Verification of Upper Bound Constraints in Grid Workflow Systems

    E-Print Network [OSTI]

    Yang, Yun

    University of Technology PO Box 218, Hawthorn, Melbourne, Australia 3122 {jchen, yyang, astrophysics or high energy physics [1, 2, 4, 15, 22]. Generally speaking, the whole working process of a grid workflow system can be divided into three stages: build- time, run-time instantiation and run

  10. Spectrum-based Fault Diagnosis for Service-Oriented Software Systems Cuiting Chen, Hans-Gerhard Gross and Andy Zaidman

    E-Print Network [OSTI]

    Zaidman, Andy

    -Gerhard Gross and Andy Zaidman Delft University of Technology, the Netherlands Email: {cuiting assurance approaches useless. In order to enable service systems to recover from and adapt to runtime of the traditional (offline) quality assurance methods useless [3]. In particular, many failures only emerge during

  11. Steady-state solution methods for open quantum optical systems

    E-Print Network [OSTI]

    Nation, P D

    2015-01-01T23:59:59.000Z

    We discuss the numerical solution methods available when solving for the steady-state density matrix of a time-independent open quantum optical system, where the system operators are expressed in a suitable basis representation as sparse matrices. In particular, we focus on the difficulties posed by the non-Hermitian structure of the Lindblad super operator, and the numerical techniques designed to mitigate these pitfalls. In addition, we introduce a doubly iterative inverse-power method that can give reduced memory and runtime requirements in situations where other iterative methods are limited due to poor bandwidth and profile reduction. The relevant methods are demonstrated on several prototypical quantum optical systems where it is found that iterative methods based on iLU factorization using reverse Cuthill-Mckee ordering tend to outperform other solution techniques in terms of both memory consumption and runtime as the size of the underlying Hilbert space increases. For eigenvalue solving, Krylov iterat...

  12. Case Study: Mobile Photovoltaic System at Bechler Meadows Ranger Station, Yellowstone National Park (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2014-03-01T23:59:59.000Z

    The mobile PV/generator hybrid system deployed at Bechler Meadows provides a number of advantages. It reduces on-site air emissions from the generator. Batteries allow the generator to operate only at its rated power, reducing run-time and fuel consumption. Energy provided by the solar array reduces fuel consumption and run-time of the generator. The generator is off for most hours providing peace and quiet at the site. Maintenance trips from Mammoth Hot Springs to the remote site are reduced. The frequency of intrusive fuel deliveries to the pristine site is reduced. And the system gives rangers a chance to interpret Green Park values to the visiting public. As an added bonus, the system provides all these benefits at a lower cost than the basecase of using only a propane-fueled generator, reducing life cycle cost by about 26%.

  13. Semi-Automatic Fault Localization and Behavior Verification for Physical System Simulation Models

    E-Print Network [OSTI]

    Zhao, Yuxiao

    automated debugging tool for dynamic debugging at run-time for the Modelica language. When debugging

  14. Co-Simulation of Building Energy and Control Systems with the Building Controls Virtual Test Bed

    SciTech Connect (OSTI)

    Wetter, Michael

    2010-08-22T23:59:59.000Z

    This article describes the implementation of the Building Controls Virtual Test Bed (BCVTB). The BCVTB is a software environment that allows connecting different simulation programs to exchange data during the time integration, and that allows conducting hardware in the loop simulation. The software architecture is a modular design based on Ptolemy II, a software environment for design and analysis of heterogeneous systems. Ptolemy II provides a graphical model building environment, synchronizes the exchanged data and visualizes the system evolution during run-time. The BCVTB provides additions to Ptolemy II that allow the run-time coupling of different simulation programs for data exchange, including EnergyPlus, MATLAB, Simulink and the Modelica modelling and simulation environment Dymola. The additions also allow executing system commands, such as a script that executes a Radiance simulation. In this article, the software architecture is presented and the mathematical model used to implement the co-simulation is discussed. The simulation program interface that the BCVTB provides is explained. The article concludes by presenting applications in which different state of the art simulation programs are linked for run-time data exchange. This link allows the use of the simulation program that is best suited for the particular problem to model building heat transfer, HVAC system dynamics and control algorithms, and to compute a solution to the coupled problem using co-simulation.

  15. Develop feedback system for intelligent dynamic resource allocation to improve application performance.

    SciTech Connect (OSTI)

    Gentile, Ann C.; Brandt, James M.; Tucker, Thomas (Open Grid Computing, Inc., Austin, TX); Thompson, David

    2011-09-01T23:59:59.000Z

    This report provides documentation for the completion of the Sandia Level II milestone 'Develop feedback system for intelligent dynamic resource allocation to improve application performance'. This milestone demonstrates the use of a scalable data collection analysis and feedback system that enables insight into how an application is utilizing the hardware resources of a high performance computing (HPC) platform in a lightweight fashion. Further we demonstrate utilizing the same mechanisms used for transporting data for remote analysis and visualization to provide low latency run-time feedback to applications. The ultimate goal of this body of work is performance optimization in the face of the ever increasing size and complexity of HPC systems.

  16. Steady-state solution methods for open quantum optical systems

    E-Print Network [OSTI]

    P. D. Nation

    2015-04-25T23:59:59.000Z

    We discuss the numerical solution methods available when solving for the steady-state density matrix of a time-independent open quantum optical system, where the system operators are expressed in a suitable basis representation as sparse matrices. In particular, we focus on the difficulties posed by the non-Hermitian structure of the Lindblad super operator, and the numerical techniques designed to mitigate these pitfalls. In addition, we introduce a doubly iterative inverse-power method that can give reduced memory and runtime requirements in situations where other iterative methods are limited due to poor bandwidth and profile reduction. The relevant methods are demonstrated on several prototypical quantum optical systems where it is found that iterative methods based on iLU factorization using reverse Cuthill-Mckee ordering tend to outperform other solution techniques in terms of both memory consumption and runtime as the size of the underlying Hilbert space increases. For eigenvalue solving, Krylov iterations using the stabilized bi-conjugate gradient method outperform generalized minimal residual methods. In contrast, minimal residual methods work best for solvers based on direct LU decomposition. This work serves as a guide for solving the steady-state density matrix of an arbitrary quantum optical system, and points to several avenues of future research that will extend the applicability of these classical algorithms in absence of a quantum computer.

  17. Ensemble annealing of complex physical systems

    E-Print Network [OSTI]

    Habeck, Michael

    2015-01-01T23:59:59.000Z

    Algorithms for simulating complex physical systems or solving difficult optimization problems often resort to an annealing process. Rather than simulating the system at the temperature of interest, an annealing algorithm starts at a temperature that is high enough to ensure ergodicity and gradually decreases it until the destination temperature is reached. This idea is used in popular algorithms such as parallel tempering and simulated annealing. A general problem with annealing methods is that they require a temperature schedule. Choosing well-balanced temperature schedules can be tedious and time-consuming. Imbalanced schedules can have a negative impact on the convergence, runtime and success of annealing algorithms. This article outlines a unifying framework, ensemble annealing, that combines ideas from simulated annealing, histogram reweighting and nested sampling with concepts in thermodynamic control. Ensemble annealing simultaneously simulates a physical system and estimates its density of states. The...

  18. Systems

    E-Print Network [OSTI]

    Chapter 1. Systems. 1.1. On Line. In this introductory section we will pose no exercises, but instead, will detail. how to use Maple to solve problems in linear ...

  19. Runtime Identification of Microprocessor Energy Saving Opportunities

    E-Print Network [OSTI]

    John, Lizy Kurian

    power consumption and low energy efficiency have become significant impediments to future performance: linear regression models for power consumption and a detailed study of energy efficiency in a modern out and Experimentation. Keywords power, modeling, energy efficiency, speculative microprocessors 1. INTRODUCTION

  20. A Dynamic Platform for Runtime Adaptation

    E-Print Network [OSTI]

    Pham, Hubert

    We present a middleware platform for assembling pervasive applications that demand fault-tolerance and adaptivity in distributed, dynamic environments. Unlike typical adaptive middleware approaches, in which sophisticated ...

  1. Feature-oriented Runtime Adaptation Mario Pukall

    E-Print Network [OSTI]

    Cazzola, Walter

    QuickSort (dark-gray background). Figure 1: Feature Evolution in a DBMS SPL. Having recreated of a DBMS1 SPL, is replaced by fea- ture QuickSort) does not aect the running program. Usu- ally, applying (according to the modi#12;cations made in the SPL). For in- stance, the changes within the DBMS SPL require

  2. Cooperative Server Clustering for a Scalable GAS Model on Petascale Cray XT5 Systems

    SciTech Connect (OSTI)

    Yu, Weikuan [ORNL; Que, Xinyu [ORNL; Tipparaju, Vinod [ORNL; Graham, Richard L [ORNL; Vetter, Jeffrey S [ORNL

    2010-05-01T23:59:59.000Z

    Global Address Space (GAS) programming models are attractive because they retain the easy-to-use addressing model that is the characteristic of shared-memory style load and store operations. The scalability of GAS models depends directly on the design and implementation of runtime libraries on the targeted platforms. In this paper, we examine the memory requirement of a popular GAS run-time library, Aggregate Remote Memory Copy Interface (ARMCI) on petascale Cray XT 5 systems. Then we describe a new technique, cooperative server clustering, that enhances the memory scalability of ARMCI communication servers. In cooperative server clustering, ARMCI servers are organized into clusters, and cooperatively process incoming communication requests among them. A request intervention scheme is also designed to expedite the return of responses to the initiating processes. Our experimental results demonstrate that, with very little impact on ARMCI communication latency and bandwidth, cooperative server clustering is able to significantly reduce the memory requirement of ARMCI communication servers, thereby enabling highly scalable scientific applications. In particular, it dramatically reduces the total execution time of a scientific application, NWChem, by 45% on 2400 processes.

  3. Cooperative Server Clustering for a Scalable GAS Model on petascale cray XT5 Systems

    SciTech Connect (OSTI)

    Yu, Weikuan [ORNL; Que, Xinyu [ORNL; Graham, Richard L [ORNL; Vetter, Jeffrey S [ORNL

    2010-01-01T23:59:59.000Z

    Global Address Space (GAS) programming models are attractive because they retain the easy-to-use addressing model that is the characteristic of shared-memory style load and store operations. The scalability of GAS models depends directly on the design and implementation of runtime libraries on the targeted platforms. In this paper, we examine the memory requirement of a popular GAS runtime library, Aggregate Remote Memory Copy Interface (ARMCI) on petascale Cray XT 5 systems. Then we describe a new technique cooperative server clustering that enhances the memory scalability of ARMCI communication servers. In cooperative server clustering, ARMCI servers are organized into clusters, and cooperatively process incoming communication requests among them. A request intervention scheme is also designed to expedite the return of responses to the initiating processes. Our experimental results demonstrate that, with very little impact on ARMCI communication latency and bandwidth, cooperative server clustering is able to significantly reduce the memory requirement of ARMCI communication servers, thereby enabling highly scalable scientific applications. In particular, it dramatically reduces the total execution time of a scientific application, NWChem, by 45% on 2400 processes.

  4. Strategic planning for power system restorations

    SciTech Connect (OSTI)

    Bent, Russell W [Los Alamos National Laboratory; Van Hententyck, Pascal [BROWN UNIV.; Coffrin, Carleton [BROWN UNIV.

    2010-10-12T23:59:59.000Z

    This paper considers the power system restoration planning problem (PSRPP) for disaster recovery, a fundamental problem faced by all populated areas. PSRPPs are complex stochastic optimization problems that combine resource allocation, warehouse location, and vehicle routing considerations. Furthermore, electrical power systems are complex systems whose behavior can only be determined by physics simulations. Moreover, these problems must be solved under tight runtime constraints to be practical in real-world disaster situations. This work is three fold: (1) it formalizes the specification of PSRPPs; (2) introduces a simple optimization-simulation hybridization necessary for solving PSRPPs; and (3) presents a complete restoration algorithm that utilizes the strengths of mixed integer programming, constraint programming, and large neighborhood search. This paper studied a novel problem in the field of humanitarian logistics, the Power System Restoration Problem (PSRPP). The PSRPP models the strategic planning process for post disaster power system recovery. The paper proposed a multi-stage stochastic hybrid optimization algorithm that yields high quality solutions to real-world benchmarks provided by Los Alamos National Laboratory (LANL). The algorithm uses a variety of technologies, including MIP, constraint programming, and large neighborhood search, to exploit the structure of each individual optimization subproblem. The experimental results on hurricane disaster benchmarks indicate that the algorithm is practical from a computational standpoint and produce significant improvements over existing relief delivery procedures.

  5. Automotive communication systems : from dependability to security

    E-Print Network [OSTI]

    Navet, Nicolas

    . protocols, multi-layered run-time environment (AUTOSAR), multi-source software, multi-core CPUs, number of variants, etc #12;BMW 7 Series networking architecture [10] ZGW = central gateway 4 CAN buses 1 FlexRay Bus

  6. Automotive communication systems : from dependability to security

    E-Print Network [OSTI]

    Navet, Nicolas

    complexity: 70 ECUs, 2500 signals, >6 comm. protocols, multi-layered run-time environment (AUTOSAR), multi-source software, multi-core CPUs, number of variants, etc #12;BMW 7 Series networking architecture [10] ZGW

  7. Simulation-based Performance Analysis and Tuning for a Two-level Directly Connected System

    SciTech Connect (OSTI)

    Totoni, E; Bhatele, A; Bohm, E J; Jain, N; Mendes, C L; Mokos, R M; Zheng, G; Kale, L V

    2011-09-19T23:59:59.000Z

    Hardware and software co-design is becoming increasingly important due to complexities in supercomputing architectures. Simulating applications before there is access to the real hardware can assist machine architects in making better design decisions that can optimize application performance. At the same time, the application and runtime can be optimized and tuned beforehand. BigSim is a simulation-based performance prediction framework designed for these purposes. It can be used to perform packet-level network simulations of parallel applications using existing parallel machines. In this paper, we demonstrate the utility of BigSim in analyzing and optimizing parallel application performance for future systems based on the PERCS network. We present simulation studies using benchmarks and real applications expected to run on future supercomputers. Future petascale systems will have more than 100,000 cores, and we present simulations at that scale.

  8. Dynamic Translation as a System Service Marc L. Corliss Vlad Petric E Christopher Lewis

    E-Print Network [OSTI]

    Lewis, E. Christopher

    Dynamic translation is a well-known and powerful technique for transforming programs as they run. Dynamic optimization based on runtime program behavior. Because dynamic translators oper- ate on the runtime (i translators have many uses including profiling, security assurance, dynamic optimization, and bug patching

  9. MONO FOR CROSS-PLATFORM CONTROL SYSTEM ENVIRONMENT

    E-Print Network [OSTI]

    Nishimura, Hiroshi; Timossi, Chris

    2006-01-01T23:59:59.000Z

    supported at run-time for .NET 1.1 programs with EPICSimplementation of the .NET Framework by Novell that runs onMacintosh) and allows any .NET compatible application to run

  10. Critical embedded systems : trends in the design Nicolas NAVET

    E-Print Network [OSTI]

    Navet, Nicolas

    , >6 comm. protocols, multi-layered run-time environment (AUTOSAR), multi-source software, multi-core CPUs, number of variants, etc 7 BMW 7 Series networking architecture [11] ZGW = central gateway 4 CAN

  11. Critical embedded systems : trends in the design Nicolas NAVET

    E-Print Network [OSTI]

    Navet, Nicolas

    complexity: 70 ECUs, 2500 signals, >6 comm. protocols, multi-layered run-time environment (AUTOSAR), multi-source software, multi-core CPUs, number of variants, etc #12;7 BMW 7 Series networking architecture [11] ZGW

  12. Portable Gathering System for Monitoring and Online Calibration at ATLAS

    E-Print Network [OSTI]

    Conde-Muíño, P; Dos Anjos, A; Baines, J T M; Bee, C P; Biglietti, M; Bogaerts, J A C; Boisvert, V; Bosman, M; Caron, B; Casado, M P; Cataldi, G; Cavalli, D; Cervetto, M; Comune, G; De Santo, A; Díaz-Gómez, M; Dosil, M; Ellis, Nick; Emeliyanov, D; Epp, B; Falciano, S; Farilla, A; George, S; Ghete, V M; González, S; Grothe, M; Kabana, S; Khomich, A; Kilvington, G; Konstantinidis, N P; Kootz, A; Lowe, A; Luminari, L; Maeno, T; Masik, J; Di Mattia, A; Meessen, C; Mello, A G; Merino, G; Moore, R; Morettini, P; Negri, A; Nikitin, N V; Nisati, A; Padilla, C; Panikashvili, N; Parodi, F; Pérez-Réale, V; Pinfold, J L; Pinto, P; Qian, Z; Resconi, S; Rosati, S; Sánchez, C; Santamarina-Rios, C; Scannicchio, D A; Schiavi, C; Segura, E; De Seixas, J M; Sivoklokov, S Yu; Soluk, R A; Stefanidis, E; Sushkov, S; Sutton, M; Tapprogge, Stefan; Thomas, E; Touchard, F; Venda-Pinto, B; Vercesi, V; Werner, P; Wheeler, S; Wickens, F J; Wiedenmann, W; Wielers, M; Zobernig, G; Computing In High Energy Physics

    2005-01-01T23:59:59.000Z

    During the runtime of any experiment, a central monitoring system that detects problems as soon as they appear has an essential role. In a large experiment, like ATLAS, the online data acquisition system is distributed across the nodes of large farms, each of them running several processes that analyse a fraction of the events. In this architecture, it is necessary to have a central process that collects all the monitoring data from the different nodes, produces full statistics histograms and analyses them. In this paper we present the design of such a system, called the gatherer. It allows to collect any monitoring object, such as histograms, from the farm nodes, from any process in the DAQ, trigger and reconstruction chain. It also adds up the statistics, if required, and processes user defined algorithms in order to analyse the monitoring data. The results are sent to a centralized display, that shows the information online, and to the archiving system, triggering alarms in case of problems. The innovation...

  13. International Conference on Machine Control & Guidance 2008 1 Local Positioning Systems in Construction

    E-Print Network [OSTI]

    ­ integration ­ compaction), 4. Mining and converting construction material in quarries (drilling.g. laser or radio waves).In addition to the runtime measuring and this way calculated distance

  14. Vehicle routing for the last mile of power system restoration

    SciTech Connect (OSTI)

    Bent, Russell W [Los Alamos National Laboratory; Coffrin, Carleton [Los Alamos National Laboratory; Van Hentenryck, Pascal [BROWN UNIV.

    2010-11-23T23:59:59.000Z

    This paper studied a novel problem in power system restoration: the Power Restoration Vehicle Routing Problem (PRVRP). The goal of PRVRPs is to decide how coordinate repair crews effectively in order to recover from blackouts as fast as possible after a disaster has occurred. PRVRPs are complex problems that combine vehicle routing and power restoration scheduling problems. The paper proposed a multi-stage optimization algorithm based on the idea of constraint injection that meets the aggressive runtime constraints necessary for disaster recovery. The algorithms were validated on benchmarks produced by the Los Alamos National Laboratory, using the infrastructure of the United States. The disaster scenarios were generated by state-of-the-art hurricane simulation tools similar to those used by the National Hurricane Center. Experimental results show that the constraint-injection algorithms can reduce the blackouts by 50% or more over field practices. Moreover, the results show that the constraint-injection algorithm using large neighborhood search over a blackbox simulator provide competitive quality and scales better than using a MIP solver on the subproblems.

  15. On program restructuring, scheduling, and communication for parallel processor systems

    SciTech Connect (OSTI)

    Polychronopoulos, Constantine D.

    1986-08-01T23:59:59.000Z

    This dissertation discusses several software and hardware aspects of program execution on large-scale, high-performance parallel processor systems. The issues covered are program restructuring, partitioning, scheduling and interprocessor communication, synchronization, and hardware design issues of specialized units. All this work was performed focusing on a single goal: to maximize program speedup, or equivalently, to minimize parallel execution time. Parafrase, a Fortran restructuring compiler was used to transform programs in a parallel form and conduct experiments. Two new program restructuring techniques are presented, loop coalescing and subscript blocking. Compile-time and run-time scheduling schemes are covered extensively. Depending on the program construct, these algorithms generate optimal or near-optimal schedules. For the case of arbitrarily nested hybrid loops, two optimal scheduling algorithms for dynamic and static scheduling are presented. Simulation results are given for a new dynamic scheduling algorithm. The performance of this algorithm is compared to that of self-scheduling. Techniques for program partitioning and minimization of interprocessor communication for idealized program models and for real Fortran programs are also discussed. The close relationship between scheduling, interprocessor communication, and synchronization becomes apparent at several points in this work. Finally, the impact of various types of overhead on program speedup and experimental results are presented. 69 refs., 74 figs., 14 tabs.

  16. U-014: Oracle Java Runtime Environment (JRE) Multiple Flaws Let...

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

    SDK and JRE 1.4.233 and prior ABSTRACT: A remote user can create a Java applet or Java Web Start application that, when loaded by the target user, will access or modify data or...

  17. Models at Run-time for Sustaining User Interface Plasticity

    E-Print Network [OSTI]

    that is described in section 2. Section 4 opens the paper on a research agenda. 2. RUNNING EXAMPLE "Sedan-Bouillon" is a web site that aims at promoting tourism in the regions of Sedan and Bouillon in France and Belgium (http://www.bouillon-sedan.com/). Initially, the web site has been designed for PC screens only

  18. Framework for architecture-independent run-time reconfigurable applications

    E-Print Network [OSTI]

    -time reconfiguration, CCM, configurable computing, FPGA, automated design 1. INTRODUCTION Typical computational on a CCM can use a divide and conquer technique, where an application is broken into smaller computations, each of which can execute on a CCM individually. Over time the configurations change in order

  19. A PORTABLE RUNTIME INTERFACE FOR MULTI-LEVEL MEMORY HIERARCHIES

    E-Print Network [OSTI]

    Pratt, Vaughan

    of Philosophy. William J. Dally Approved for the University Committee on Graduate Studies. iii #12;Abstract FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY Michael C. Houston March 2008 #12;c Copyright by Michael C. Houston 2008 All Rights Reserved ii #12;I certify that I have read this dissertation

  20. AES and ECC Cryptography Processor with Runtime Configuration

    E-Print Network [OSTI]

    Sousa, Leonel

    in a variety of devices: from smart cards, wireless sensors, cell phones, and laptops, that usually need to different needs; · low power, enhancing the battery savings, reducing the costs in energy and heat sinks area and throughput metrics. Thus, its usage is mandatory for some applications. Currently, one

  1. Architectural Assertions: Checking Architectural Constraints at Run-Time

    E-Print Network [OSTI]

    Cheon, Yoonsik

    of Computer Science The University of Texas at El Paso 500 West University Avenue El Paso, Texas 79968-0518, U The University of Texas at Dallas Dallas, TX 75083 2 Department of Computer Science The University of Texas at El

  2. Runtime Verification of Temporal Patterns for Dynamic Reconfigurations of Components

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , Olga Kouchnarenko1 , and Arnaud Lanoix2 1 University of Franche-Comté, Besançon, France {jdormoy Software - FACS 2011 (2011)" #12;In [14], we have proposed a temporal pattern logic, called FTPL, to char

  3. Runtime Power Estimator Calibration for High-Performance Microprocessors

    E-Print Network [OSTI]

    Tan, Sheldon X.-D.

    optimization, dynamic thermal/power management [1], [2], [3], [4] and chip reliability analysis [5], [6 to assist the global power/thermal managements such as fan speed control and dynamic voltage and frequency numbers of various performance actions for each functional block in a time frame and calculate the power

  4. Jitblt : efficient run-time code generation for digital compositing

    E-Print Network [OSTI]

    Amelang, Daniel James

    2008-01-01T23:59:59.000Z

    87. [4] Blinn, J. , 1994: Composting, part 2: practice. IEEEgiven region. For some composting operator and pixel format

  5. Kevoree Modeling Framework (KMF): Efficient modeling techniques for runtime use

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of expertise. A natural approach to create DSLs is to reuse existing modeling standards and tools. In this area-Oriented software API, generated from a metamodel, facilitating the authoring and exchange of domain-specific concepts between several tools, applications and stakeholders. This API can for example support graphical

  6. Runtime optimization of an application executing on a parallel computer

    DOE Patents [OSTI]

    Faraj, Daniel A.; Smith, Brian E.

    2013-01-29T23:59:59.000Z

    Identifying a collective operation within an application executing on a parallel computer; identifying a call site of the collective operation; determining whether the collective operation is root-based; if the collective operation is not root-based: establishing a tuning session and executing the collective operation in the tuning session; if the collective operation is root-based, determining whether all compute nodes executing the application identified the collective operation at the same call site; if all compute nodes identified the collective operation at the same call site, establishing a tuning session and executing the collective operation in the tuning session; and if all compute nodes executing the application did not identify the collective operation at the same call site, executing the collective operation without establishing a tuning session.

  7. Runtime optimization of an application executing on a parallel computer

    DOE Patents [OSTI]

    Faraj, Daniel A; Smith, Brian E

    2014-11-25T23:59:59.000Z

    Identifying a collective operation within an application executing on a parallel computer; identifying a call site of the collective operation; determining whether the collective operation is root-based; if the collective operation is not root-based: establishing a tuning session and executing the collective operation in the tuning session; if the collective operation is root-based, determining whether all compute nodes executing the application identified the collective operation at the same call site; if all compute nodes identified the collective operation at the same call site, establishing a tuning session and executing the collective operation in the tuning session; and if all compute nodes executing the application did not identify the collective operation at the same call site, executing the collective operation without establishing a tuning session.

  8. Runtime optimization of an application executing on a parallel computer

    DOE Patents [OSTI]

    Faraj, Daniel A; Smith, Brian E

    2014-11-18T23:59:59.000Z

    Identifying a collective operation within an application executing on a parallel computer; identifying a call site of the collective operation; determining whether the collective operation is root-based; if the collective operation is not root-based: establishing a tuning session and executing the collective operation in the tuning session; if the collective operation is root-based, determining whether all compute nodes executing the application identified the collective operation at the same call site; if all compute nodes identified the collective operation at the same call site, establishing a tuning session and executing the collective operation in the tuning session; and if all compute nodes executing the application did not identify the collective operation at the same call site, executing the collective operation without establishing a tuning session.

  9. Safe Runtime Verification of Real-Time Christian Colombo1

    E-Print Network [OSTI]

    Pace, Gordon J.

    , and Gerardo Schneider2 1 Department of Computer Science, University of Malta, Msida, Malta. 2 Department -- The research work disclosed in this publication is partially funded by Malta Gov- ernment Scholarship Scheme grant number ME 367/07/29 and by the Malta National Research and Innovation (R&I) Programme 2008 project

  10. WICT PROCEEDINGS, NOVEMBER 2009 1 Statistics and Runtime Verification

    E-Print Network [OSTI]

    Pace, Gordon J.

    . Of Computer Science University Of Malta agau0006@um.edu.mt Gordon J. Pace Dept. of Computer Science University of Malta gordon.pace@um.edu.mt Christian Colombo Dept. of Computer Science University of Malta christian

  11. Compensation-Aware Runtime Monitoring Christian Colombo1

    E-Print Network [OSTI]

    Pace, Gordon J.

    Dept. of Computer Science, University of Malta, Malta 2 Ixaris Ltd, Malta {christian.colombo, gordon. To solve the The research work disclosed in this publication is partially funded by the Malta National Re

  12. NDSeq: Runtime Checking for Nondeterministic Sequential Specifications of Parallel Correctness

    E-Print Network [OSTI]

    Necula, George

    Jacob Burnim Tayfun Elmas George Necula Koushik Sen Department of Electrical Engineering and Computer or commercial advantage and that copies bear this notice and the full citation on the first page. To copy

  13. Runtime Adaptation for Autonomic Heterogeneous Computing | ornl.gov

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

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

  14. Locality-Aware Parallel Process Mapping for Multi-Core HPC Systems

    SciTech Connect (OSTI)

    Hursey, Joshua J [ORNL; Squyres, Jeffrey M. [Cisco Systems, Inc.; Dontje, Terry [Oracle

    2011-01-01T23:59:59.000Z

    High Performance Computing (HPC) systems are composed of servers containing an ever-increasing number of cores. With such high processor core counts, non-uniform memory access (NUMA) architectures are almost universally used to reduce inter-processor and memory communication bottlenecks by distributing processors and memory throughout a server-internal networking topology. Application studies have shown that the tuning of processes placement in a server s NUMA networking topology to the application can have a dramatic impact on performance. The performance implications are magnified when running a parallel job across multiple server nodes, especially with large scale HPC applications. This paper presents the Locality-Aware Mapping Algorithm (LAMA) for distributing the individual processes of a parallel application across processing resources in an HPC system, paying particular attention to the internal server NUMA topologies. The algorithm is able to support both homogeneous and heterogeneous hardware systems, and dynamically adapts to the available hardware and user-specified process layout at run-time. As implemented in Open MPI, the LAMA provides 362,880 mapping permutations and is able to naturally scale out to additional hardware resources as they become available in future architectures.

  15. activation instrumental analysis: Topics by E-print Network

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

    car electronics industry. There are currently many electronic systems improving the safety Wieringa, Roel 17 Runtime Instrumentation for Precise Flow-Sensitive Type Analysis...

  16. automated enforcement: Topics by E-print Network

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

    24 25 Next Page Last Page Topic Index 1 Enforcing Safety Requirements for Industrial Automation Systems at Runtime Position Paper Computer Technologies and Information Sciences...

  17. E-AMOM: An Energy-Aware Modeling and Optimization Methodology for Scientific Applications on Multicore Systems

    E-Print Network [OSTI]

    Lively, Charles

    2012-07-16T23:59:59.000Z

    Hybrid (MPI/OpenMP) and MPI implementations for six scientific applications. E-AMOM includes an optimization component that utilizes our models to employ run-time Dynamic Voltage and Frequency Scaling (DVFS) and Dynamic Concurrency Throttling to reduce...

  18. Award ER25750: Coordinated Infrastructure for Fault Tolerance Systems Indiana University Final Report

    SciTech Connect (OSTI)

    Lumsdaine, Andrew

    2013-03-08T23:59:59.000Z

    The main purpose of the Coordinated Infrastructure for Fault Tolerance in Systems initiative has been to conduct research with a goal of providing end-to-end fault tolerance on a systemwide basis for applications and other system software. While fault tolerance has been an integral part of most high-performance computing (HPC) system software developed over the past decade, it has been treated mostly as a collection of isolated stovepipes. Visibility and response to faults has typically been limited to the particular hardware and software subsystems in which they are initially observed. Little fault information is shared across subsystems, allowing little flexibility or control on a system-wide basis, making it practically impossible to provide cohesive end-to-end fault tolerance in support of scientific applications. As an example, consider faults such as communication link failures that can be seen by a network library but are not directly visible to the job scheduler, or consider faults related to node failures that can be detected by system monitoring software but are not inherently visible to the resource manager. If information about such faults could be shared by the network libraries or monitoring software, then other system software, such as a resource manager or job scheduler, could ensure that failed nodes or failed network links were excluded from further job allocations and that further diagnosis could be performed. As a founding member and one of the lead developers of the Open MPI project, our efforts over the course of this project have been focused on making Open MPI more robust to failures by supporting various fault tolerance techniques, and using fault information exchange and coordination between MPI and the HPC system software stack?from the application, numeric libraries, and programming language runtime to other common system components such as jobs schedulers, resource managers, and monitoring tools.

  19. Micro-Specialization: Dynamic Code Specialization of Database Management Systems

    E-Print Network [OSTI]

    Snodgrass, Richard T.

    performance. Much of the work to date on optimizing DBMS performance has emphasized ensuring efficient data to a particular kind of invariant. We realize these techniques, in concert termed micro-specialization, via a DBMS-independent run-time environment and apply them to a high- performance open-source DBMS, PostgreSQL. We show

  20. Tool coupling for the design and operation of building energy and control systems based on the Functional Mock-up Interface standard

    SciTech Connect (OSTI)

    Nouidui, Thierry Stephane; Wetter, Michael

    2014-03-01T23:59:59.000Z

    This paper describes software tools developed at the Lawrence Berkeley National Laboratory (LBNL) that can be coupled through the Functional Mock-up Interface standard in support of the design and operation of building energy and control systems. These tools have been developed to address the gaps and limitations encountered in legacy simulation tools. These tools were originally designed for the analysis of individual domains of buildings, and have been difficult to integrate with other tools for runtime data exchange. The coupling has been realized by use of the Functional Mock-up Interface for co-simulation, which standardizes an application programming interface for simulator interoperability that has been adopted in a variety of industrial domains. As a variety of coupling scenarios are possible, this paper provides users with guidance on what coupling may be best suited for their application. Furthermore, the paper illustrates how tools can be integrated into a building management system to support the operation of buildings. These tools may be a design model that is used for real-time performance monitoring, a fault detection and diagnostics algorithm, or a control sequence, each of which may be exported as a Functional Mock-up Unit and made available in a building management system as an input/output block. We anticipate that this capability can contribute to bridging the observed performance gap between design and operational energy use of buildings.

  1. Process Creation in JavaProcess Creation in Java Note: Java really doesn't implement processes per se, but

    E-Print Network [OSTI]

    Klassner, Frank

    Process Creation in JavaProcess Creation in Java · Note: Java really doesn't implement processes per se, but provides a clean interface to spawn processes to run system programs outside of the JVM · "Process" class in Java ­ Runtime.getRuntime.exec("") method will return a process object (interface

  2. Library System Library System

    E-Print Network [OSTI]

    Cinabro, David

    Library System #12;Library System 5150 Anthony Wayne Drive David Adamany Undergraduate Library that for the current fiscal year, we've been given an additional $600,000 for our library materials budget. We're very subscriptions. The Wayne State University Libraries are deeply committed to providing our faculty and students

  3. Gasification Systems

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

    SYSTEMS Gasi cation Systems Advanced Combustion Systems Advanced Turbines Solid Oxide Fuel Cells Plant Optimization Coal Utilization Sciences University Training and Research...

  4. International Journal of Cooperative Information Systems Vol. 14, No. 4 (2005) 329331

    E-Print Network [OSTI]

    Aiello, Marco

    2005-01-01T23:59:59.000Z

    the concepts of distribution, openness, asyn- chronous messaging and lack of centralized control take a leading-automatically compose services at design time or, even better, at run-time would change the way we look at software to manage the lifecycle of services, how to model individual and compositions of services. 329 #12;330 M

  5. Hypergeometric systems II: GKZ systems

    E-Print Network [OSTI]

    Uli Walther

    2010-09-27T23:59:59.000Z

    Solutions of A-hypergemetric systems. Hypergeometric systems II: GKZ systems ... Power series ansatz: z = ?. ? k=0 aktk shows ak ? vj >0 vj ?1. ? l=0.

  6. atrophy patterns based: Topics by E-print Network

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

    Decentralised Evaluation of Temporal Patterns over Component-based Systems at Runtime Olga of control loops. It extends the work on the adaptation of component-based systems at...

  7. Computer System,

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

    undergraduate summer institute http:institutes.lanl.govistisummer-school 2015 Computer System, Cluster, and Networking Summer Institute Purpose The Computer System,...

  8. Microfluidic Systems Integrated Microfluidic Systems**

    E-Print Network [OSTI]

    Ismagilov, Rustem F.

    Microfluidic Systems Integrated Microfluidic Systems** Rustem F. Ismagilov* Keywords: analytical methods · enzymes · microfluidics · microreactors · protein structures Microfluidic systems use networks of channels thinner than a human hair to manipulate nanoliter volumes of re- agents. The goal of microfluidics

  9. The STAPL Parallel Container Framework

    E-Print Network [OSTI]

    Tanase, Ilie Gabriel

    2012-02-14T23:59:59.000Z

    The Standard Template Adaptive Parallel Library (STAPL) is a parallel programming infrastructure that extends C with support for parallelism. STAPL provides a run-time system, a collection of distributed data structures (pContainers) and parallel...

  10. Correcting vibration-induced performance degradation in enterprise servers

    E-Print Network [OSTI]

    Simunic, Tajana

    operations, cloud services and market trading. Owners such as Amazon EC2, Facebook, Google and stock and maintain runtime performance, datacenters have high-powered HVAC systems in the buildings and fan

  11. COMPONENTS, PLATFORMS, AND ARCHITECTURES Subthreshold Computing

    E-Print Network [OSTI]

    Texas at Arlington, University of

    as reducing resource consumption have become emerging trends in computing. As computers increase in speed Modeling the Energy Consumption of Distributed Applications A Comparative Study of Runtime Systems for COMPONENTS, PLATFORMS, AND ARCHITECTURES Subthreshold Computing Energy-Efficient Network

  12. System Effectiveness

    SciTech Connect (OSTI)

    Powell, Danny H [ORNL] [ORNL; Elwood Jr, Robert H [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    An effective risk assessment system is needed to address the threat posed by an active or passive insider who, acting alone or in collusion, could attempt diversion or theft of nuclear material. It is critical that a nuclear facility conduct a thorough self-assessment of the material protection, control, and accountability (MPC&A) system to evaluate system effectiveness. Self-assessment involves vulnerability analysis and performance testing of the MPC&A system. The process should lead to confirmation that mitigating features of the system effectively minimize the threat, or it could lead to the conclusion that system improvements or upgrades are necessary to achieve acceptable protection against the threat. Analysis of the MPC&A system is necessary to understand the limits and vulnerabilities of the system to internal threats. Self-assessment helps the facility be prepared to respond to internal threats and reduce the risk of theft or diversion of nuclear material. MSET is a self-assessment or inspection tool utilizing probabilistic risk assessment (PRA) methodology to calculate the system effectiveness of a nuclear facility's MPC&A system. MSET analyzes the effectiveness of an MPC&A system based on defined performance metrics for MPC&A functions based on U.S. and international best practices and regulations. A facility's MC&A system can be evaluated at a point in time and reevaluated after upgrades are implemented or after other system changes occur. The total system or specific subareas within the system can be evaluated. Areas of potential performance improvement or system upgrade can be assessed to determine where the most beneficial and cost-effective improvements should be made. Analyses of risk importance factors show that sustainability is essential for optimal performance. The analyses reveal where performance degradation has the greatest detrimental impact on total system risk and where performance improvements have the greatest reduction in system risk. The risk importance factors show the amount of risk reduction achievable with potential upgrades and the amount of risk reduction actually achieved after upgrades are completed. Applying the risk assessment tool gives support to budget prioritization by showing where budget support levels must be sustained for MC&A functions most important to risk. Results of the risk assessment are also useful in supporting funding justifications for system improvements that significantly reduce system risk.

  13. V-172: ISC BIND RUNTIME_CHECK Error Lets Remote Users Deny Service...

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

    the target resolver to crash IMPACT: Triggering this defect will cause the affected server to exit with an error, denying service to recursive DNS clients that use that...

  14. to appear in J. Parallel and Distributed Computing Efficient Runtime Support for Irregular

    E-Print Network [OSTI]

    Baden, Scott B.

    . We have implemented these abstractions in KeLP, a C++ run­time library. KeLP's abstractions enable activity with a high­level, abstract interface. We show that KeLP's flexible communication model implementation [20, 24, 16, 1, 12, 10, 35, 15, 11, 23, 28, 4]. We present Kernel Lattice Parallelism (KeLP), a C

  15. Runtime ResolutiRun time Resoluti Kris Welsh Pete SawyerKris Welsh, Pete Sawyer

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of best strategy appears unclear but the analyst wishes to prioritize the minimize energy costs over and to be economical to run minimize energy costs. The vacuum cleaner goal clean apartment can be satisfied by two the avoid tripping hazard softgoal The analystthe minimize energy costs over the avoid tripping hazard

  16. Accurate Run-Time Prediction of Performance Degradation under Frequency Scaling

    E-Print Network [OSTI]

    Heiser, Gernot

    its energy efficiency, other circuits may use more energy as a result of the longer execution time NICTA University of New South Wales Sydney, Australia Godfrey Van Der Linden NICTA University of New South Wales Sydney, Australia Stefan M. Petters NICTA University of New South Wales Sydney, Australia

  17. AspectJML: Modular Specification and Runtime Checking for Crosscutting Contracts

    E-Print Network [OSTI]

    Leavens, Gary T.

    , Daniel M. Zimmerman, M´arcio Corn´elio, and Thomas Th¨um Universidade Federal de Pernambuco, PE, Brazil- ming [21] (AOP) mechanisms such as pointcuts and advice [20]. The idea has also been patented [28

  18. Constraint-Based Runtime Prediction of SLA Violations in Service Orchestrations

    E-Print Network [OSTI]

    Politécnica de Madrid, Universidad

    Prediction of SLA Violations in Service Orchestrations. In Gerti Kappel, Hamid Motahari, and Zakaria Maamar

  19. WICT PROCEEDINGS, DECEMBER 2008 1 A Practical Approach to Runtime Verification

    E-Print Network [OSTI]

    Pace, Gordon J.

    -Time Properties for Java Programs Christian Colombo Dept. of Computer Science University of Malta ccol002@um.edu.mt Gordon J. Pace Dept. of Computer Science University of Malta gordon.pace@um.edu.mt Gerardo Schneider Dept

  20. Dynamic Event-Based Runtime Monitoring of Real-Time and Contextual Properties

    E-Print Network [OSTI]

    Pace, Gordon J.

    , Gordon J. Pace1 , and Gerardo Schneider2 1 Department of Computer Science, University of Malta, Malta. 2 in this publication is partially funded by Malta Gov- ernment Scholarship Scheme grant number ME 367/07/29. #12;2 C

  1. A Run-Time Verification Framework for Smart Grid Applications Implemented on Simulation Frameworks

    SciTech Connect (OSTI)

    Ciraci, Selim; Sozer, Hasan; Tekinerdogan, Bedir

    2013-05-18T23:59:59.000Z

    Smart grid applications are implemented and tested with simulation frameworks as the developers usually do not have access to large sensor networks to be used as a test bed. The developers are forced to map the implementation onto these frameworks which results in a deviation between the architecture and the code. On its turn this deviation makes it hard to verify behavioral constraints that are de- scribed at the architectural level. We have developed the ConArch toolset to support the automated verification of architecture-level behavioral constraints. A key feature of ConArch is programmable mapping for architecture to the implementation. Here, developers implement queries to identify the points in the target program that correspond to architectural interactions. ConArch generates run- time observers that monitor the flow of execution between these points and verifies whether this flow conforms to the behavioral constraints. We illustrate how the programmable mappings can be exploited for verifying behavioral constraints of a smart grid appli- cation that is implemented with two simulation frameworks.

  2. U-014: Oracle Java Runtime Environment (JRE) Multiple Flaws Let Remote

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23,EnergyChicopeeTechnologyfactTuscarora Phase IIDOE O 484.1 6-30-20146AccessUsers

  3. V-172: ISC BIND RUNTIME_CHECK Error Lets Remote Users Deny Service Against

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015of 2005UNSDepartmentFebruaryPhase|PotomacDepartment ofConduct

  4. INFORMATION SYSTEMS

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

    SYSTEMS Providing an efficient, seamless virtual work environment To accelerate progress toward mission goals, our business and operations processes will be aggressively...

  5. Power system

    DOE Patents [OSTI]

    Hickam, Christopher Dale (Glasford, IL)

    2008-03-18T23:59:59.000Z

    A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

  6. NPIP: A skew line needle configuration optimization system for HDR brachytherapy

    SciTech Connect (OSTI)

    Siauw, Timmy; Cunha, Adam; Berenson, Dmitry; Atamtuerk, Alper; Hsu, I-Chow; Goldberg, Ken; Pouliot, Jean [Department of Civil and Environmental Engineering, University of California, Berkeley, 760 Davis Hall, Berkeley, California 94720-1710 (United States); Department of Radiation Oncology, University of California, San Francisco, Comprehensive Cancer Center, 1600 Divisadero Street, Suite H1031, San Francisco, California 94143-1708 (United States); Department of Electrical Engineering and Computer Science, University of California, Berkeley, 4th Floor Sutardja Dai Hall, Berkeley, California 94720-1764 (United States); Department of Industrial Engineering and Operations, University of California, Berkeley, 4141 Etcheverry Hall, Berkeley, California 94720-1777 (United States); Department of Radiation Oncology, University of California, San Francisco, Comprehensive Cancer Center, 1600 Divisadero Street, Suite H1031, San Francisco, California 94143-1708 (United States); Department of Industrial Engineering and Operations Research and Department of Electrical Engineering and Computer Science, University of California, Berkeley, 4141 Etcheverry Hall, Berkeley, California 94720-1777 (United States); Department of Radiation Oncology, University of California, San Francisco, Comprehensive Cancer Center, 1600 Divisadero Street, Suite H1031, San Francisco, California 94143-1708 (United States)

    2012-07-15T23:59:59.000Z

    Purpose: In this study, the authors introduce skew line needle configurations for high dose rate (HDR) brachytherapy and needle planning by integer program (NPIP), a computational method for generating these configurations. NPIP generates needle configurations that are specific to the anatomy of the patient, avoid critical structures near the penile bulb and other healthy structures, and avoid needle collisions inside the body. Methods: NPIP consisted of three major components: a method for generating a set of candidate needles, a needle selection component that chose a candidate needle subset to be inserted, and a dose planner for verifying that the final needle configuration could meet dose objectives. NPIP was used to compute needle configurations for prostate cancer data sets from patients previously treated at our clinic. NPIP took two user-parameters: a number of candidate needles, and needle coverage radius, {delta}. The candidate needle set consisted of 5000 needles, and a range of {delta} values was used to compute different needle configurations for each patient. Dose plans were computed for each needle configuration. The number of needles generated and dosimetry were analyzed and compared to the physician implant. Results: NPIP computed at least one needle configuration for every patient that met dose objectives, avoided healthy structures and needle collisions, and used as many or fewer needles than standard practice. These needle configurations corresponded to a narrow range of {delta} values, which could be used as default values if this system is used in practice. The average end-to-end runtime for this implementation of NPIP was 286 s, but there was a wide variation from case to case. Conclusions: The authors have shown that NPIP can automatically generate skew line needle configurations with the aforementioned properties, and that given the correct input parameters, NPIP can generate needle configurations which meet dose objectives and use as many or fewer needles than the current HDR brachytherapy workflow. Combined with robot assisted brachytherapy, this system has the potential to reduce side effects associated with treatment. A physical trial should be done to test the implant feasibility of NPIP needle configurations.

  7. Accelerating semantic graph databases on commodity clusters

    SciTech Connect (OSTI)

    Morari, Alessandro; Castellana, Vito G.; Haglin, David J.; Feo, John T.; Weaver, Jesse R.; Tumeo, Antonino; Villa, Oreste

    2013-10-06T23:59:59.000Z

    We are developing a full software system for accelerating semantic graph databases on commodity cluster that scales to hundreds of nodes while maintaining constant query throughput. Our framework comprises a SPARQL to C++ compiler, a library of parallel graph methods and a custom multithreaded runtime layer, which provides a Partitioned Global Address Space (PGAS) programming model with fork/join parallelism and automatic load balancing over a commodity clusters. We present preliminary results for the compiler and for the runtime.

  8. Battery system

    DOE Patents [OSTI]

    Dougherty, Thomas J; Wood, Steven J; Trester, Dale B; Andrew, Michael G

    2013-08-27T23:59:59.000Z

    A battery module includes a plurality of battery cells and a system configured for passing a fluid past at least a portion of the plurality of battery cells in a parallel manner.

  9. Systems List

    E-Print Network [OSTI]

    Systems List. General Computing Servers: Hostname: bers.math.purdue.edu. Sun Microsystems Sun Fire V210 2 x 1.002 GHz UltraSPARC IIIi processors (total

  10. Systems Studies

    SciTech Connect (OSTI)

    Graham, R.L.

    1998-03-17T23:59:59.000Z

    The Systems Studies Activity had two objectives: (1) to investigate nontechnical barriers to the deployment of biomass production and supply systems and (2) to enhance and extend existing systems models of bioenergy supply and use. For the first objective, the Activity focused on existing bioenergy markets. Four projects were undertaken: a comparative analysis of bioenergy in Sweden and Austria; a one-day workshop on nontechnical barriers jointly supported by the Production Systems Activity; the development and testing of a framework for analyzing barriers and drivers to bioenergy markets; and surveys of wood pellet users in Sweden, Austria and the US. For the second objective, two projects were undertaken. First, the Activity worked with the Integrated BioEnergy Systems (TBS) Activity of TEA Bioenergy Task XIII to enhance the BioEnergy Assessment Model (BEAM). This model is documented in the final report of the IBS Activity. The Systems Studies Activity contributed to enhancing the feedstock portion of the model by developing a coherent set of willow, poplar, and switchgrass production modules relevant to both the US and the UK. The Activity also developed a pretreatment module for switchgrass. Second, the Activity sponsored a three-day workshop on modeling bioenergy systems with the objectives of providing an overview of the types of models used to evaluate bioenergy and promoting communication among bioenergy modelers. There were nine guest speakers addressing different types of models used to evaluate different aspects of bioenergy, ranging from technoeconomic models based on the ASPEN software to linear programming models to develop feedstock supply curves for the US. The papers from this workshop have been submitted to Biomass and Bioenergy and are under editorial review.

  11. Investigating Army systems and Systems of Systems for value robustness

    E-Print Network [OSTI]

    Koo, Kevin C. K. (Kevin Cheng Keong)

    2010-01-01T23:59:59.000Z

    This thesis proposes a value robustness approach to architect defense systems and Systems of Systems (SoS). A value robust system or SoS has the ability to provide continued value to stakeholders by performing well to meet ...

  12. NERSC File Systems

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

    Systems NERSC File Systems Overview NERSC file systems can be divided into two categories: local and global. Local file systems are only accessible on a single platform, providing...

  13. Gasification system

    DOE Patents [OSTI]

    Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

    1983-01-01T23:59:59.000Z

    A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

  14. Gasification system

    DOE Patents [OSTI]

    Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

    1985-01-01T23:59:59.000Z

    A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

  15. Directives System

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

    1998-01-30T23:59:59.000Z

    The Department of Energy (DOE) Directives System is the means by which DOE policies, requirements, and responsibilities are developed and communicated throughout the Department. Directives are used to inform, direct, and guide employees in the performance of their jobs, and to enable employees to work effectively within the Department and with agencies, contractors, and the public. Cancels: DOE O 251.1, DOE M 251.1-1

  16. Heating system

    SciTech Connect (OSTI)

    Nishman, P.J.

    1983-03-08T23:59:59.000Z

    A heating system utilizing solar panels and buried ground conduits to collect and store heat which is delivered to a heatpump heat exchanger. A heat-distribution fluid continuously circulates through a ground circuit to transfer heat from the ground to the heat exchanger. The ground circuit includes a length of buried ground conduit, a pump, a check valve and the heat exchanger. A solar circuit, including a solar panel and a second pump, is connected in parallel with the check valve so that the distribution fluid transfers solar heat to the heat exchanger for utilization and to the ground conduit for storage when the second pump is energized. A thermostatically instrumented control system energizes the second pump only when the temperature differential between the solar panel inlet and outlet temperatures exceeds a predetermined value and the ground temperature is less than a predetermined value. Consequently, the distribution fluid flows through the solar panel only when the panel is capable of supplying significant heat to the remainder of the system without causing excessive drying of the ground.

  17. Braking system

    DOE Patents [OSTI]

    Norgren, D.U.

    1982-09-23T23:59:59.000Z

    A balanced braking system comprising a plurality of braking assemblies located about a member to be braked. Each of the braking assemblies consists of a spring biased piston of a first material fitted into a body of a different material which has a greater contraction upon cooling than the piston material. The piston is provided with a recessed head portion over which is positioned a diaphragm and forming a space therebetween to which is connected a pressurized fluid supply. The diaphragm is controlled by the fluid in the space to contact or withdraw from the member to be braked. A cooling means causes the body within which the piston is fitted to contract more than the piston, producing a tight shrink fit therebetween. The braking system is particularly applicable for selectively braking an arbor of an electron microscope which immobilizes, for example, a vertically adjustable low temperature specimen holder during observation. The system provides balanced braking forces which can be easily removed and re-established with minimal disturbance to arbor location.

  18. Multiprocessor system

    SciTech Connect (OSTI)

    Katzman, J.A.; Bartlett, J.F.; Bixler, R.M.; Davidow, W.H.; Despotakis, J.A.; Graziano, P.J.; Green, M.D.; Greig, D.A.; Hayashi, S.J.; Mackie, D.R.

    1987-06-09T23:59:59.000Z

    This patent describes an input/output system for a multiprocessor system of the kind in which a plurality of separate processor modules are interconnected for processing, each of the processor modules having a central processing unit and an associated main memory, at least pair of the processor modules each having an input/output channel with each such channel being independent of other such channels, the input/output system comprising: device controller for controlling the transfer of data between the pair of processor modules and a peripheral device, the device controller having multiple ports, with each such port being failure-independent of the other such ports and connected to a respective one of the input/output channels, each port including an enable latch operable in response to a disable command communicated to the port by the associated processor module to disable the port from any further data communication; the device controller including interface logic means responsive to signaling from a one of the processor modules for selecting one of the ports to the exclusion of the other of the ports for data transfers between the peripheral device and the one processor module connected to the selected port through its associated input/output channel; and interprocessor bus means communicating the pair of processor modules to one another for data transfer therebetween; each of processors modules being operable to provide a data communication path to the peripheral device for itself and for the other of the pair of processor modules.

  19. File Systems

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) Environmental Assessments (EA)Budget »Travel andFifth Annual RadWasteFile Systems

  20. Estimating Systems Engineering Reuse

    E-Print Network [OSTI]

    Fortune, Jared

    2009-04-20T23:59:59.000Z

    Systems engineering reuse is the utilization of previously developed systems engineering products or artifacts such as

  1. Computer Systems Administrator

    E-Print Network [OSTI]

    Computer Systems Administrator Fort Collins, CO POSITION A Computer Systems Administrator (Non activities. RESPONSIBILITIES The System Administrator will provide Unix/Linux, Windows computer system or computer science, and three years computer systems administration experience. DURATION The work is planned

  2. Transfer system

    DOE Patents [OSTI]

    Kurosawa, Kanji (Tokyo, JP); Koga, Bunichiro (Miyagi, JP); Ito, Hideki (Miyagi, JP); Kiriyama, Shigeru (Miyagi, JP); Higuchi, Shizuo (Kanagawa, JP)

    2003-05-20T23:59:59.000Z

    A transport system includes a traveling rail (1) which constitutes a transport route and a transport body (3) which is capable of traveling on the traveling rail in the longitudinal direction of the traveling rail. Flexible drive tubes (5) are arranged on the traveling rail in the longitudinal direction of the traveling rail. The transport body includes a traveling wheel (4) which is capable of rolling on the traveling rail and drive wheels (2) which are capable of rolling on the drive tubes upon receiving the rotational drive power generated by pressure of a pressure medium supplied to the drive tubes while depressing the drive tubes. The traveling rail includes a plurality of transport sections and the transport body is capable of receiving a rotational drive force from the drive tubes at every transport sections. If necessary, a transport route changeover switch which changes over the transport route can be provided between the transport sections.

  3. System architecture of offshore oil production systems

    E-Print Network [OSTI]

    Keller, James (James Thomas)

    2008-01-01T23:59:59.000Z

    This thesis presents an approach to applying Systems Architecture methods to the development of large, complex, commercial systems, particularly offshore oil and gas productions systems. The aim of this research was to ...

  4. Onsite Wastewater Treatment Systems: Spray Distribution System

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2008-10-23T23:59:59.000Z

    Spray distribution systems for wastewater are much like lawn sprinkler systems, in that they spray treated wastewater over the surface of a yard. This publication explains how spray distribution systems work, what their design requirements are...

  5. Examining Survivability of Systems of Systems

    E-Print Network [OSTI]

    Mekdeci, Brian

    Previous research has identified design principles that enable survivability for systems, but it is unclear if these principles are appropriate and sufficient for systems of systems as well. This paper presents a preliminary ...

  6. Systemic Risk in the International System

    E-Print Network [OSTI]

    Ingo Piepers

    2009-10-15T23:59:59.000Z

    The risk of systemic war seems dependant on the level of criticality and sensitivity of the International System, and the system's conditions. The level of criticality and sensitivity is dependant on the developmental stage of the International System. Initially, following a systemic war, the increase of the level of criticality and sensitivity go hand in hand. However, at a certain stage the sensitivity of the International System for larger sized wars decreases; as a consequence of a network effect, we argue. This network effect results in increased local stability of the System. During this phase the criticality of the International System steadily increases, resulting in a release deficit. This release deficit facilitates a necessary build up of energy to push the International System, by means of systemic war, into a new stability domain. Systemic war is functional in the periodic rebalancing of an anarchistic international system.

  7. NREL: Energy Systems Integration - Energy Systems Integration...

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

    Printable Version Energy Systems Integration Facility Newsroom The Energy Systems Integration Facility (ESIF) will be one of the only megawatt-scale test facilities in the United...

  8. Neutrino Factory Downstream Systems

    E-Print Network [OSTI]

    Zisman, Michael S.

    2010-01-01T23:59:59.000Z

    Neutrino Factory Downstream Systems Michael S. Zisman*Factory accelerator systems downstream from the target andthe Neutrino Factory systems downstream of the target and

  9. Franklin File Systems

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

    Files systems Files systems NERSC's global home and project file systems are available on Franklin. Additionally, Franklin has over 400 TB of locally attached high-performance...

  10. System design description cone penetrometer system

    SciTech Connect (OSTI)

    Seda, R.Y., Westinghouse Hanford

    1996-08-12T23:59:59.000Z

    The system design description documents in detail the design of the cone penetrometer system. The systems includes the cone penetrometer physical package, raman spectroscopy package and moisture sensor package. Information pertinent to the system design, development, fabrication and testing is provided.

  11. Communication Systems Chair of Communication Systems

    E-Print Network [OSTI]

    Schindelhauer, Christian

    , porn sites, web services, ... :-)) #12;8 | 28 Communication Systems network insecurity Inner and intra

  12. Complex System Classification

    E-Print Network [OSTI]

    Magee, Christopher

    2004-07-24T23:59:59.000Z

    The use of terms such as “Engineering Systems”, “System of systems” and others have been coming into greater use over the past decade to denote systems of importance but with implied higher complexity than for the term ...

  13. D0 Cryo System Control System Autodialer

    SciTech Connect (OSTI)

    Urbin, J.; /Fermilab

    1990-04-17T23:59:59.000Z

    The DO cryogenic system is controlled by a TI565-PLC based control system. This allows the system to be unmanned when in steady state operation. System experts will need to be contacted when system parameters exceed normal operating points and reach alarm setpoints. The labwide FIRUS system provides one alarm monitor and communication link. An autodialer provides a second and more flexible alarm monitor and communication link. The autodialer monitors contact points in the control system and after receiving indication of an alarm accesses a list of experts which it calls until it receives an acknowledgement. There are several manufacturers and distributors of autodialer systems. This EN explains the search process the DO cryo group used to fmd an autodialer system that fit the cryo system's needs and includes information and specs for the unit we chose.

  14. Atmospheric Aerosol Systems | EMSL

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

    Science Themes Atmospheric Aerosol Systems Overview Atmospheric Aerosol Systems Biosystem Dynamics & Design Energy Materials & Processes Terrestrial & Subsurface Ecosystems...

  15. N Controller Target System

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Arch Evaluator Adaptation Engine Model Manager Adaptation Executor Running System System API System Layer Probes Resource Discovery Effectors Running System System API System Layer Probes Resource COSMOS asynchronous push pull COSMOS (a)synchronous pull Local SCA binding Remote SCA binding (REST, RPC

  16. Expert systems in transportation

    SciTech Connect (OSTI)

    O'Leary, K.P.

    1988-01-01T23:59:59.000Z

    The 5 papers in the report deal with the following areas: Knowledge representation and software selection for expert-systems design; Expert-system architecture for retaining-wall design; Development of expert-systems technology in the California Department of Transportation; Development of an expert system to assist in the interactive graphic transit system design process; Expert systems development for contingency transportation planing.

  17. March 23, 2008 Databases: Information Systems 1 Information Systems

    E-Print Network [OSTI]

    Adam, Salah

    March 23, 2008 Databases: Information Systems 1 Information Systems #12;March 23, 2008 Databases: Information Systems 2 Objectives What is an Information System (IS) + Classification of Information Systems + Evolution of Information Systems + Information System Management + Performance Requirements of ISs + #12

  18. Influence strategies for systems of systems

    E-Print Network [OSTI]

    Shah, Nirav Bharat, 1979-

    2013-01-01T23:59:59.000Z

    Distributed decision making has been identified as a source of managerial complexity for leaders of systems of systems (SoS). A new framework, AIR (Anticipation-Influence-Reaction), is proposed to capture the feedback ...

  19. Landscape Management Systems The Visual Management System

    E-Print Network [OSTI]

    Standiford, Richard B.

    Landscape Management Systems The Visual Management System of the Forest Service, USDA1 Warren R presentation on how the Visual Management System (VMS) functions. 1/ Presented at the National Conference Manual 2380, Landscape Management, USDA. INTRODUCTION The American people are concerned about the quality

  20. Storage System and IBM System Storage

    E-Print Network [OSTI]

    IBM® XIV® Storage System and IBM System Storage® SAN Volume Controller deliver high performance and smart management for SAP® landscapes IBM SAP International Competence Center #12;"The combination of the XIV Storage System and SAN Volume Controller gives us a smarter way to manage our storage. If we need

  1. Heating System Specification Specification of Heating System

    E-Print Network [OSTI]

    Day, Nancy

    Appendix A Heating System Specification /* Specification of Heating System (loosely based */ requestHeat : Room ­? bool; 306 #12; APPENDIX A. HEATING SYSTEM SPECIFICATION 307 /* user inputs */ livingPattern : Room ­? behaviour; setTemp : Room ­? num; heatSwitchOn, heatSwitchOff, userReset : simple

  2. Systems Science Harder House

    E-Print Network [OSTI]

    Systems Science Harder House 1604 SW 10th Avenue 503-725-4960 www.sysc.pdx.edu/ M.S. Ph.D. Systems governing systems of widely differing types. Systems concepts and techniques are used extensively for both who are skilled in modern methods of decision making and systems design and who are capable

  3. Introduction Minimal Fusion Systems

    E-Print Network [OSTI]

    Thévenaz, Jacques

    Introduction Minimal Fusion Systems Maximal Parabolics Results Minimal Fusion Systems Ellen Henke University of Birmingham Ellen Henke Minimal Fusion Systems #12;Introduction Minimal Fusion Systems Maximal Parabolics Results Contents 1 Introduction 2 Minimal Fusion Systems 3 Maximal Parabolics 4 Results Ellen

  4. Conclusions Fractionated Space Systems

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Conclusions Fractionated Space Systems There is a growing interest in fractionated space system design. Fractionated space systems are inherently flexible and modular. There are many key technologies of flexibility serves as a source of motivation for system designers to embed flexibility into a system design (i

  5. Lighting system with thermal management system

    DOE Patents [OSTI]

    Arik, Mehmet; Weaver, Stanton; Stecher, Thomas; Seeley, Charles; Kuenzler, Glenn; Wolfe, Jr., Charles; Utturkar, Yogen; Sharma, Rajdeep; Prabhakaran, Satish; Icoz, Tunc

    2013-05-07T23:59:59.000Z

    Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.

  6. Reuse in Systems Engineering

    E-Print Network [OSTI]

    Wang, Gan

    Reuse in systems engineering is a frequent but poorly understood phenomenon. Nevertheless, it has a significant impact on system development and on estimating the appropriate amount of systems engineering effort with models ...

  7. The Effectiveness of Application Permissions Adrienne Porter Felt

    E-Print Network [OSTI]

    Wagner, David

    . Time-of-use systems prompt users to approve permissions as needed by applications at runtime-time systems, this might alert some users to malware at installation; for time-of-use systems, this can prevent's declared privi- leges. This could also be true for a time-of-use sys- tem in which developers declare

  8. Automatic Control Flow Generation from Software Architectures

    E-Print Network [OSTI]

    Lau, Kung-Kiu

    -time automatically. To achieve this we take a different approach to system construction. We take control out.-K. Lau and V. Ukis generic connectors, and generate control flow of the system automatically at run in different systems with different control flows. Our automatic runtime control flow generation not only

  9. Frequent Pattern Mining for Kernel Trace Data Christopher LaRosa, Li Xiong, Ken Mandelberg

    E-Print Network [OSTI]

    Xiong, Li

    , application programmers, operating systems engineers, and security analysts. In the systems area, data miningFrequent Pattern Mining for Kernel Trace Data Christopher LaRosa, Li Xiong, Ken Mandelberg patterns and other recurring runtime execution patterns in operating system trace logs, we employ data

  10. Control system design method

    DOE Patents [OSTI]

    Wilson, David G. (Tijeras, NM); Robinett, III, Rush D. (Tijeras, NM)

    2012-02-21T23:59:59.000Z

    A control system design method and concomitant control system comprising representing a physical apparatus to be controlled as a Hamiltonian system, determining elements of the Hamiltonian system representation which are power generators, power dissipators, and power storage devices, analyzing stability and performance of the Hamiltonian system based on the results of the determining step and determining necessary and sufficient conditions for stability of the Hamiltonian system, creating a stable control system based on the results of the analyzing step, and employing the resulting control system to control the physical apparatus.

  11. Genomics and Systems Biology

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

    Genomics and Systems Biology Genomics and Systems Biology Los Alamos scientists perform research in functional genomics and structural genomics, and applications for such work...

  12. CONTRACTOR PURCHASING SYSTEM REVIEWS

    Office of Environmental Management (EM)

    PURCHASING SYSTEM REVIEWS RISK ASSESSMENT MATRIX RISK CATEGORY PERFORMANCE SCHEDULE COST HIGH (3) --Performance data casts significant doubt on the ability of the system or...

  13. Umbra's system representation.

    SciTech Connect (OSTI)

    McDonald, Michael James

    2005-07-01T23:59:59.000Z

    This document describes the Umbra System representation. Umbra System representation, initially developed in the spring of 2003, is implemented in Incr/Tcl using concepts borrowed from Carnegie Mellon University's Architecture Description Language (ADL) called Acme. In the spring of 2004 through January 2005, System was converted to Umbra 4, extended slightly, and adopted as the underlying software system for a variety of Umbra applications that support Complex Systems Engineering (CSE) and Complex Adaptive Systems Engineering (CASE). System is now a standard part Of Umbra 4. While Umbra 4 also includes an XML parser for System, the XML parser and Schema are not described in this document.

  14. Flex Fuel Vehicle Systems

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

    Flex Fuel Vehicle Systems * Bosch FFV Project Structure and Partners * Purpose of Work - Project Highlights * Barriers - Existing Flex Fuel Systems and Problems * Approach - Bosch...

  15. Data & File Systems

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

    Data Management Policies NERSC File Systems HPSS Data Archive IO Resources for Scientific Applications at NERSC Optimizing IO performance on the Lustre file system IO Formats...

  16. Euclid File Systems

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

    File storage File storage Disk Quota Change Request Form Euclid File Systems Euclid has 3 kinds of file systems available to users: home directories, scratch directories and...

  17. The evaluation within the development and deployment of IMS LD-based didactic materials: The MD2 + runtime adaptation approach

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The evaluation within the development and deployment of IMS LD-based didactic materials: The MD2 in the didactic materials creation since it allows developers to check if the features of created material satisfy]. They have been applied to asses IMS LD based didactic material in conjunction with the experience provided

  18. Measurement of FPGA Die Temperature Using Run-time Reconfiguration Sergio Lopez-Buedo, Javier Garrido, and Eduardo Boemo

    E-Print Network [OSTI]

    Boemo, Eduardo

    is captured, the value is read back and the sensor is eliminated from the FPGA. This avoids self-heating to disable the oscillator in order to minimize self-heating. The output could also be measured internally

  19. Runtime Fault Detection and Localization in Component-oriented Software Bernhard Peischl and Joerg Weber and Franz Wotawa

    E-Print Network [OSTI]

    and Joerg Weber and Franz Wotawa Technische Universit¨at Graz Institute for Software Technology 8010 Graz

  20. NS-FTR: A Fault Tolerant Routing Scheme for Networks on Chip with Permanent and Runtime Intermittent Faults

    E-Print Network [OSTI]

    Pasricha, Sudeep

    to trace uranium/thorium impurities in packages, capacitive and inductive crosstalk, electromagnetic noise, etc. causes the deposit or removal of enough charge to invert the state of a transistor, wire

  1. Simple runtime high energy photon emission for ultra relativistic laser-plasma interaction in a PIC-code

    E-Print Network [OSTI]

    Wallin, Erik; Marklund, Mattias

    2014-01-01T23:59:59.000Z

    We model the emission of high energy photons due to relativistic particles in a plasma interacting with a super-intense laser. This is done in a particle-in-cell code where the high frequency radiation normally cannot be resolved, due to the unattainable demands it would place on the time and space resolution. A simple expression for the synchrotron radiation spectra is used together with a Monte-Carlo method for the emittance. We extend to previous work by accounting acceleration due to arbitrary fields, considering the particles to be in instantaneous circular motion due to an effective magnetic field. Furthermore we implement noise reduction techniques and present estimations of the validity of the method. Finally we perform a rigorous comparison to the mechanism of radiation reaction, with the emitted energy very well in agreement with the radiation reaction loss.

  2. SMT-based Verification of LTL Specifications with Integer Constraints and its Application to Runtime Checking of Service Substitutability

    E-Print Network [OSTI]

    Bersani, Marcello M; Frigeri, Achille; Pradella, Matteo; Rossi, Matteo

    2010-01-01T23:59:59.000Z

    An important problem that arises during the execution of service-based applications concerns the ability to determine whether a running service can be substituted with one with a different interface, for example if the former is no longer available. Standard Bounded Model Checking techniques can be used to perform this check, but they must be able to provide answers very quickly, lest the check hampers the operativeness of the application, instead of aiding it. The problem becomes even more complex when conversational services are considered, i.e., services that expose operations that have Input/Output data dependencies among them. In this paper we introduce a formal verification technique for an extension of Linear Temporal Logic that allows users to include in formulae constraints on integer variables. This technique applied to the substitutability problem for conversational services is shown to be considerably faster and with smaller memory footprint than existing ones.

  3. INSENS sensor system

    SciTech Connect (OSTI)

    Myers, D.W.; Baker, J.; Benzel, D.M.; Fuess, D.A.

    1993-09-29T23:59:59.000Z

    This paper describes an unattended ground sensor system that has been developed for the immigration and Naturalization Service (INS). The system, known as INSENS, was developed at the Lawrence Livermore National Laboratory for use by the United States Border Patrol. This system assists in the detection of illegal entry of aliens and contraband (illegal drugs, etc.) into the United States along its land borders. Key to the system is its flexible modular design which allows future software and hardware enhancements to the system without altering the fundamental architecture of the system. Elements of the system include a sensor system capable of processing signals from multiple directional probes, a repeater system, and a handheld monitor system. Seismic, passive infrared (PIR), and magnetic probes are currently supported. The design of the INSENS system elements and their performance are described.

  4. Architecture-Aware Algorithms for Scalable Performance and Resilience on Heterogeneous Architectures

    SciTech Connect (OSTI)

    Dongarra, Jack [University of Tennessee, Knoxville] [University of Tennessee, Knoxville

    2013-10-15T23:59:59.000Z

    The goal of the Extreme-scale Algorithms & Software Institute (EASI) is to close the ?application-architecture performance gap? by exploring algorithms and runtime improvements that will enable key science applications to better exploit the architectural features of DOE extreme-scale systems. For the past year of the project, our efforts at the University of Tennessee have concentrated on, and made significant progress related to, the following high-level EASI goals: ? Develop multi-precision and architecture-aware implementations of Krylov, Poisson, Helmholtz solvers, and dense factorizations for heterogeneous multi-core systems; ? Explore new methods of algorithm resilience, and develop new algorithms with these capabilities; ? Develop runtime support for adaptable algorithms that are dealing with resilience, scalability; ? Distribute the new algorithms and runtime support through widely used software packages; ? Establish a strong outreach program to disseminate results, interact with colleagues and train students and junior members of our community.

  5. Final Report: Center for Programming Models for Scalable Parallel Computing

    SciTech Connect (OSTI)

    Mellor-Crummey, John [William Marsh Rice University] [William Marsh Rice University

    2011-09-13T23:59:59.000Z

    As part of the Center for Programming Models for Scalable Parallel Computing, Rice University collaborated with project partners in the design, development and deployment of language, compiler, and runtime support for parallel programming models to support application development for the “leadership-class” computer systems at DOE national laboratories. Work over the course of this project has focused on the design, implementation, and evaluation of a second-generation version of Coarray Fortran. Research and development efforts of the project have focused on the CAF 2.0 language, compiler, runtime system, and supporting infrastructure. This has involved working with the teams that provide infrastructure for CAF that we rely on, implementing new language and runtime features, producing an open source compiler that enabled us to evaluate our ideas, and evaluating our design and implementation through the use of benchmarks. The report details the research, development, findings, and conclusions from this work.

  6. Space System Architecture

    E-Print Network [OSTI]

    McManus, Dr. Hugh

    Final Report of SSPARC: the Space Systems, Policy, and Architecture Research Consortium (Thrust II and III)

  7. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    USA, Jacksonville, FL Jacksonville Solar Energy Generation Facility Constructed Systems that produce electricity

  8. Medical imaging systems

    DOE Patents [OSTI]

    Frangioni, John V

    2013-06-25T23:59:59.000Z

    A medical imaging system provides simultaneous rendering of visible light and diagnostic or functional images. The system may be portable, and may include adapters for connecting various light sources and cameras in open surgical environments or laparascopic or endoscopic environments. A user interface provides control over the functionality of the integrated imaging system. In one embodiment, the system provides a tool for surgical pathology.

  9. Mock Tridiagonal Systems

    E-Print Network [OSTI]

    Ito, Tatsuro

    2008-01-01T23:59:59.000Z

    We introduce the notion of a {\\it mock tridiagonal system}. This is a generalization of a tridiagonal system in which the irreducibility assumption is replaced by a certain non-vanishing condition. We show how mock tridiagonal systems can be used to construct tridiagonal systems that meet certain specifications. This paper is part of our ongoing project to classify the tridiagonal systems up to isomorphism.

  10. Photovoltaic systems and applications

    SciTech Connect (OSTI)

    Not Available

    1982-01-01T23:59:59.000Z

    Abstracts are given of presentations given at a project review meeting held at Albuquerque, NM. The proceedings cover the past accomplishments and current activities of the Photovoltaic Systems Research, Balance-of-System Technology Development and System Application Experiments Projects at Sandia National Laboratories. The status of intermediate system application experiments and residential system analysis is emphasized. Some discussion of the future of the Photovoltaic Program in general, and the Sandia projects in particular is also presented.

  11. AUTONOMOUS ROBOTIC INSPECTION EXPERIMENTAL SYSTEM

    SciTech Connect (OSTI)

    David N. Rocheleau, Senior Investigator; Edward A. Hamilton, Associate Director, SCUREF; Jerry L. Hudgins, Senior Investigator; Paul McCarty, Graduate Research Assistant; Robert J. Schalkoff, Senior Investigator; Robert O. Pettus, Project Manager & Principal Investigator

    1998-08-01T23:59:59.000Z

    This document contains appendices on these topics: COMPUTERS AND CONTROLS; COMPUTER VISION SYSTEM; ELECTRICAL SYSTEMS; MECHANICAL SYSTEMS; ROBOTIC VEHICLE SYSTEMS; FIELD TRIALS.

  12. Renovating Residential HVAC Systems HVAC Systems

    E-Print Network [OSTI]

    - 1 - LBNL 57406 Renovating Residential HVAC Systems HVAC Systems J.A. McWilliams and I.S. Walker Environmental Energy Technologies Division April 2005 ERNEST ORLANDO LAWRENCE BERKELEY NATIONAL LABORATORY #12 Laboratory is an equal opportunity employer. This work was supported by the Assistant Secretary for Energy

  13. ELECTRICAL ENERGY SYSTEMS ELECTRICAL ENERGY SYSTEMS

    E-Print Network [OSTI]

    Strathclyde, University of

    countries to install solar energy technologies into local schools and hospitals. In its Energy PolicyMEng ELECTRICAL ENERGY SYSTEMS #12;MEng ELECTRICAL ENERGY SYSTEMS Electrical energy is vital aspects of modern life. One of the biggest challenges facing society is the need for reliable energy

  14. System identification for passive linear quantum systems

    E-Print Network [OSTI]

    Madalin Guta; Naoki Yamamoto

    2014-08-27T23:59:59.000Z

    System identification is a key enabling component for the implementation of quantum technologies, including quantum control. In this paper, we consider the class of passive linear input-output systems, and investigate several basic questions: (1) which parameters can be identified? (2) Given sufficient input-output data, how do we reconstruct system parameters? (3) How can we optimize the estimation precision by preparing appropriate input states and performing measurements on the output? We show that minimal systems can be identified up to a unitary transformation on the modes, and systems satisfying a Hamiltonian connectivity condition called "infecting" are completely identifiable. We propose a frequency domain design based on a Fisher information criterion, for optimizing the estimation precision for coherent input state. As a consequence of the unitarity of the transfer function, we show that the Heisenberg limit with respect to the input energy can be achieved using non-classical input states.

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

    E-Print Network [OSTI]

    Park, Byoung-Chul

    2011-01-01T23:59:59.000Z

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

  16. Standard-C hydrogen monitoring system, system design description

    SciTech Connect (OSTI)

    Schneider, T.C., Westinghouse Hanford

    1996-08-29T23:59:59.000Z

    Standard-C cabinet arrangement system design description for the Standard Hydrogen Monitoring System.

  17. Modeling Power Systems as Complex Adaptive Systems

    SciTech Connect (OSTI)

    Chassin, David P.; Malard, Joel M.; Posse, Christian; Gangopadhyaya, Asim; Lu, Ning; Katipamula, Srinivas; Mallow, J V.

    2004-12-30T23:59:59.000Z

    Physical analogs have shown considerable promise for understanding the behavior of complex adaptive systems, including macroeconomics, biological systems, social networks, and electric power markets. Many of today's most challenging technical and policy questions can be reduced to a distributed economic control problem. Indeed, economically based control of large-scale systems is founded on the conjecture that the price-based regulation (e.g., auctions, markets) results in an optimal allocation of resources and emergent optimal system control. This report explores the state-of-the-art physical analogs for understanding the behavior of some econophysical systems and deriving stable and robust control strategies for using them. We review and discuss applications of some analytic methods based on a thermodynamic metaphor, according to which the interplay between system entropy and conservation laws gives rise to intuitive and governing global properties of complex systems that cannot be otherwise understood. We apply these methods to the question of how power markets can be expected to behave under a variety of conditions.

  18. 0278-6648/06/$20.00 2006 IEEESEPTEMBER/OCTOBER 2006 31 FOR DECADES, DIGITAL INTEGRAT-

    E-Print Network [OSTI]

    Dick, Robert

    reliable run-time operation, cooling systems need to handle the worst-case chip temperatures. Chip (ICs) have benefited from the relentless progress predicted by Moore's Law. With each new technol- ogy generation, ICs become denser, faster, and cheaper. However, with increasing system integration, as well

  19. Foundations and Trends R Electronic Design Automation

    E-Print Network [OSTI]

    Pedram, Massoud

    and Optimization 293 5.1 Design-time Optimization 293 5.2 Runtime Optimization 298 #12;6 Hybrid Energy Storage-Aided Design and Optimization of Hybrid Energy Storage Systems Younghyun Kim1 , Yanzhi Wang2 , Naehyuck Chang3 of Hybrid Energy Storage Systems By Younghyun Kim, Yanzhi Wang, Naehyuck Chang, and Massoud Pedram Contents

  20. Enabling Trusted Software Integrity Darko Kirovski

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    this problem from two perspectives: · Intrusion detection ­ a set of mechanisms that aim at scanning system address this problem by trying to de- tect the intrusion at run-time or by formally verifying aim at intrusion prevention as the core technology for enabling secure computing systems. Intrusion

  1. Slotted Programming for Sensor Networks Roland Flury

    E-Print Network [OSTI]

    is not easy either. Embedded systems ask for light software that does not waste resources such as memory approach is highly qualified for energy efficient and real time applications. To substantiate our claims, processing power, or energy. In addition, the systems often need to meet tight run-time requirements

  2. The RASCALLI Platform For a Flexible and Distributed Development of

    E-Print Network [OSTI]

    The RASCALLI Platform For a Flexible and Distributed Development of Virtual Systems Augmented with Cognition Brigitte Kenn, Christian Schollum Abstract The RASCALLI platform is a modular and flexible development and runtime environment for artificial systems augmented with aspects of cognition. The platform

  3. Liquid Phase Heating Systems

    E-Print Network [OSTI]

    Mordt, E. H.

    1979-01-01T23:59:59.000Z

    Temperature Water (HTW) central district heating systems are far superior to steam systems in large, spread out installations such as airports, universities and office complexes. Water, pressurized to keep it in the liquid state, is distributed at 400o...

  4. Absorption heat pump system

    DOE Patents [OSTI]

    Grossman, Gershon (Oak Ridge, TN)

    1984-01-01T23:59:59.000Z

    The efficiency of an absorption heat pump system is improved by conducting liquid from a second stage evaporator thereof to an auxiliary heat exchanger positioned downstream of a primary heat exchanger in the desorber of the system.

  5. Absorption heat pump system

    DOE Patents [OSTI]

    Grossman, G.

    1982-06-16T23:59:59.000Z

    The efficiency of an absorption heat pump system is improved by conducting liquid from a second stage evaporator thereof to an auxiliary heat exchanger positioned downstream of a primary heat exchanger in the desorber of the system.

  6. Systems Analysis Workshop Purpose

    Broader source: Energy.gov [DOE]

    Presentation on SAW purpose to the DOE Systems Analysis Workshop held in Washington, D.C. July 28-29, 2004 to discuss and define role of systems analysis in DOE Hydrogen Program.

  7. USER'S GUIDE DATABASE SYSTEM

    E-Print Network [OSTI]

    server and runs on the PPPL VAX cluster under VMS. The MINGL database system for TFTR is composed on the VAX. This document describes the overall system in terms of how the various parts interact

  8. Leasing Residential PV Systems

    SciTech Connect (OSTI)

    Rutberg, Michael; Bouza, Antonio

    2013-11-01T23:59:59.000Z

    The article discusses the adoption, consequences and current market status of the leasing of residential photovoltaic systems. It addresses attributed energy savings and market potential of residential system leasing.

  9. Urban organizational systems

    E-Print Network [OSTI]

    Morog, Joseph V

    1981-01-01T23:59:59.000Z

    General systems theory provides a conceptual framework for the integration of knowledge from a wide variety of specialized fields. Systems theory serves to synthesize, reconcile, and integrate knowledge making it possible ...

  10. Stepping Motor Control System

    E-Print Network [OSTI]

    Larson, Noble G.

    This paper describes a hardware system designed to facilitate position and velocity control of a group of eight stepping motors using a PDP-11. The system includes motor driver cards and other interface cards in addition ...

  11. Economics of Irrigation Systems

    E-Print Network [OSTI]

    Amosson, Stephen H.; New, Leon; Almas, Lal; Bretz, Fran; Marek, Thomas

    2002-01-11T23:59:59.000Z

    Choosing and buying an irrigation system for crop production can be expensive and complex. This publication discusses six common types of irrigation systems used in Texas: conventional furrow; surge flow furrow; mid-elevation spray application...

  12. Modular optical detector system

    DOE Patents [OSTI]

    Horn, Brent A. (Livermore, CA); Renzi, Ronald F. (Tracy, CA)

    2006-02-14T23:59:59.000Z

    A modular optical detector system. The detector system is designed to detect the presence of molecules or molecular species by inducing fluorescence with exciting radiation and detecting the emitted fluorescence. Because the system is capable of accurately detecting and measuring picomolar concentrations it is ideally suited for use with microchemical analysis systems generally and capillary chromatographic systems in particular. By employing a modular design, the detector system provides both the ability to replace various elements of the detector system without requiring extensive realignment or recalibration of the components as well as minimal user interaction with the system. In addition, the modular concept provides for the use and addition of a wide variety of components, including optical elements (lenses and filters), light sources, and detection means, to fit particular needs.

  13. Crowd-powered systems

    E-Print Network [OSTI]

    Bernstein, Michael Scott

    2012-01-01T23:59:59.000Z

    Crowd-powered systems combine computation with human intelligence, drawn from large groups of people connecting and coordinating online. These hybrid systems enable applications and experiences that neither crowds nor ...

  14. Scalability of RAID systems 

    E-Print Network [OSTI]

    Li, Yan

    2010-01-01T23:59:59.000Z

    RAID systems (Redundant Arrays of Inexpensive Disks) have dominated backend storage systems for more than two decades and have grown continuously in size and complexity. Currently they face unprecedented challenges from ...

  15. Scalability of RAID Systems 

    E-Print Network [OSTI]

    Li, Yan

    2010-01-01T23:59:59.000Z

    RAID systems (Redundant Arrays of Inexpensive Disks) have dominated backend storage systems for more than two decades and have grown continuously in size and complexity. Currently they face unprecedented challenges from ...

  16. An Approach for Detecting Inconsistencies between Behavioral Models of the Software Architecture and the Code

    SciTech Connect (OSTI)

    Ciraci, Selim; Sozer, Hasan; Tekinerdogan, Bedir

    2012-07-16T23:59:59.000Z

    In practice, inconsistencies between architectural documentation and the code might arise due to improper implementation of the architecture or the separate, uncontrolled evolution of the code. Several approaches have been proposed to detect the inconsistencies between the architecture and the code but these tend to be limited for capturing inconsistencies that might occur at runtime. We present a runtime verification approach for detecting inconsistencies between the dynamic behavior of the architecture and the actual code. The approach is supported by a set of tools that implement the architecture and the code patterns in Prolog, and support the automatic generation of runtime monitors for detecting inconsistencies. We illustrate the approach and the toolset for a Crisis Management System case study.

  17. Elec 331 -Nervous System Nervous System

    E-Print Network [OSTI]

    Pulfrey, David L.

    Left Atrium Right Atrium AV Node Time delay Automaticity · SA Node ­ 70-100 BPM · AV Node ­ 40-60 BPM · Remainder ­ 15-40 BPM #12;Elec 331 - Nervous System 5 Cardiac Vector · When viewed from far away: ­ Sum

  18. Energy Storage Systems

    SciTech Connect (OSTI)

    Conover, David R.

    2013-12-01T23:59:59.000Z

    Energy Storage Systems – An Old Idea Doing New Things with New Technology article for the International Assoication of ELectrical Inspectors

  19. Lithium battery management system

    DOE Patents [OSTI]

    Dougherty, Thomas J. (Waukesha, WI)

    2012-05-08T23:59:59.000Z

    Provided is a system for managing a lithium battery system having a plurality of cells. The battery system comprises a variable-resistance element electrically connected to a cell and located proximate a portion of the cell; and a device for determining, utilizing the variable-resistance element, whether the temperature of the cell has exceeded a predetermined threshold. A method of managing the temperature of a lithium battery system is also included.

  20. Directives System Manual

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

    1998-01-30T23:59:59.000Z

    This Manual provides detailed requirements to supplement DOE O 251.1A, Directives System, dated 1-30-98.

  1. Monitoring System Performance (Presentation)

    SciTech Connect (OSTI)

    Emery, K.; Smith, R.

    2011-02-01T23:59:59.000Z

    Requirements for a standard test to rate the durability of photovoltaic (PV) modules at system voltage are discussed.

  2. Introduction Systems Engineering Fundamentals ENGINEERING

    E-Print Network [OSTI]

    Rhoads, James

    Introduction Systems Engineering Fundamentals i SYSTEMS ENGINEERING FUNDAMENTALS January 2001;Systems Engineering Fundamentals Introduction ii #12;Introduction Systems Engineering Fundamentals iii ............................................................................................................................................. iv PART 1. INTRODUCTION Chapter 1. Introduction to Systems Engineering Management

  3. Complex Networked Control Systems

    E-Print Network [OSTI]

    buildings, modern control systems are increasingly incorporating communication networks in feedback loops [5Complex Networked Control Systems W e live and operate in a networked world. We drive to work on the performance of feedback control systems [5], [6]. Signifi- cant attention is focused on devising local

  4. Thermalization in Quantum Systems

    E-Print Network [OSTI]

    of equilibrated states. iv. Definition for "quantum integrability". v. Many-body localization... vi. Open systems () 0 = ||2 . ETH: is approximately constant in the "energy window" of the state . ETH: For all 10 #12;Integrability 101 Quantum Integrability Classical systems: Definition: A system is integrable

  5. Energy Systems Laboratory Groundbreaking

    ScienceCinema (OSTI)

    Hill, David; Otter, C.L.; Simpson, Mike; Rogers, J.W.;

    2013-05-28T23:59:59.000Z

    INL recently broke ground for a research facility that will house research programs for bioenergy, advanced battery systems, and new hybrid energy systems that integrate renewable, fossil and nuclear energy sources. Here's video from the groundbreaking ceremony for INL's new Energy Systems Laboratory. You can learn more about CAES research at http://www.facebook.com/idahonationallaboratory.

  6. Information extraction system

    DOE Patents [OSTI]

    Lemmond, Tracy D; Hanley, William G; Guensche, Joseph Wendell; Perry, Nathan C; Nitao, John J; Kidwell, Paul Brandon; Boakye, Kofi Agyeman; Glaser, Ron E; Prenger, Ryan James

    2014-05-13T23:59:59.000Z

    An information extraction system and methods of operating the system are provided. In particular, an information extraction system for performing meta-extraction of named entities of people, organizations, and locations as well as relationships and events from text documents are described herein.

  7. Neutrino Factory Downstream Systems

    SciTech Connect (OSTI)

    Zisman, Michael S.

    2009-12-23T23:59:59.000Z

    We describe the Neutrino Factory accelerator systems downstream from the target and capture area. These include the bunching and phase rotation, cooling, acceleration, and decay ring systems. We also briefly discuss the R&D program under way to develop these systems, and indicate areas where help from CERN would be invaluable.

  8. Systems Science and Engineering

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    . Analysis of Variability in Systems II 4 ISE 370. Industrial Automation and Control .4 Humanities or social447 Systems Science and Industrial Engineering UNDERGRADUATE PROGRAMS The bachelor of science program in industrial and systems engineering is a new program within the Watson School. The curriculum

  9. IDC System Specification Document.

    SciTech Connect (OSTI)

    Clifford, David J.

    2014-12-01T23:59:59.000Z

    This document contains the system specifications derived to satisfy the system requirements found in the IDC System Requirements Document for the IDC Reengineering Phase 2 project. Revisions Version Date Author/Team Revision Description Authorized by V1.0 12/2014 IDC Reengineering Project Team Initial delivery M. Harris

  10. Polymerase chain reaction system

    DOE Patents [OSTI]

    Benett, William J.; Richards, James B.; Stratton, Paul L.; Hadley, Dean R.; Milanovich, Fred P.; Belgrader, Phil; Meyer, Peter L.

    2004-03-02T23:59:59.000Z

    A portable polymerase chain reaction DNA amplification and detection system includes one or more chamber modules. Each module supports a duplex assay of a biological sample. Each module has two parallel interrogation ports with a linear optical system. The system is capable of being handheld.

  11. Rural Intelligent Transportation Systems

    E-Print Network [OSTI]

    Minnesota, University of

    Rural Intelligent Transportation Systems In a technical session at the 2011 NACE conference, Dennis Foderberg of SEH Inc. discussed intelligent transportation systems (ITS) developed by SEH in collaboration with Network Transportation Technologies, Inc. These systems address the problem of crashes on low-volume roads

  12. ALFA Detector Control System

    E-Print Network [OSTI]

    Oleiro Seabra, Luis Filipe; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    ALFA (Absolute Luminosity For ATLAS) is one of the sub-detectors of ATLAS/LHC. The ALFA system is composed by two stations installed in the LHC tunnel 240 m away from each side of the ATLAS interaction point. Each station has a vacuum and ventilation system, movement control and all the required electronic for signal processing. The Detector Control System (DCS) provides control and monitoring of several components and ensures the safe operation of the detector contributing to good Data Quality. This paper describes the ALFA DCS system including a detector overview, operation aspects and hardware control through a SCADA system, WinCC OA.

  13. ALFA Detector Control System

    E-Print Network [OSTI]

    Oleiro Seabra, Luis Filipe; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    ALFA (Absolute Luminosity For ATLAS) is one of the sub-detectors of ATLAS (A Toroidal LHC Apparatus). The ALFA system is composed by four stations installed in the LHC tunnel 240 m away from the ATLAS interaction point. Each station has a vacuum and ventilation system, movement control and all the required electronics for signal processing. The Detector Control System (DCS) provides control and monitoring of several components and ensures the safe operation of the detector contributing to good Data Quality. This paper describes the ALFA DCS system including a detector overview, operation aspects and hardware control through a SCADA system, WinCC OA.

  14. Smart vehicular transportation systems

    SciTech Connect (OSTI)

    Little, C.Q.; Wilson, C.W.

    1997-05-01T23:59:59.000Z

    This work builds upon established Sandia intelligent systems technology to develop a unique approach for the integration of intelligent system control into the US Highway and urban transportation systems. The Sandia developed concept of the COPILOT controller integrates a human driver with computer control to increase human performance while reducing reliance on detailed driver attention. This research extends Sandia expertise in sensor based, real-time control of robotics systems to high speed transportation systems. Knowledge in the form of maps and performance characteristics of vehicles provides the automatic decision making intelligence needed to plan optimum routes, maintain safe driving speeds and distances, avoid collisions, and conserve fuel.

  15. FRIB cryogenic distribution system

    SciTech Connect (OSTI)

    Ganni, V.; Dixon, K.; Laverdure, N.; Knudsen, P.; Arenius, D. [Thomas Jefferson National Accelerator Facility (JLab), Newport News, VA 23606 (United States); Barrios, M.; Jones, S.; Johnson, M.; Casagrande, F. [Facility for Rare Isotope Beams (FRIB), Michigan State University, East Lansing, MI 48824 (United States)

    2014-01-29T23:59:59.000Z

    The Michigan State University Facility for Rare Isotope Beams (MSU-FRIB) helium distribution system has been revised to include bayonet/warm valve type disconnects between each cryomodule and the transfer line distribution system, similar to the Thomas Jefferson National Accelerator Facility (JLab) and the Spallation Neutron Source (SNS) cryogenic distribution systems. The heat loads at various temperature levels and some of the features in the design of the distribution system are outlined. The present status, the plans for fabrication, and the procurement approach for the helium distribution system are also included.

  16. FRIB cryogenic distribution system

    SciTech Connect (OSTI)

    Ganni, Venkatarao [JLAB; Dixon, Kelly D. [JLAB; Laverdure, Nathaniel A. [JLAB; Knudsen, Peter N. [JLAB; Arenius, Dana M. [JLAB; Barrios, Matthew N. [Michigan State; Jones, S. [Michigan State; Johnson, M. [Michigan State; Casagrande, Fabio [Michigan State

    2014-01-01T23:59:59.000Z

    The Michigan State University Facility for Rare Isotope Beams (MSU-FRIB) helium distribution system has been revised to include bayonet/warm valve type disconnects between each cryomodule and the transfer line distribution system, similar to the Thomas Jefferson National Accelerator Facility (JLab) and the Spallation Neutron Source (SNS) cryogenic distribution systems. The heat loads at various temperature levels and some of the features in the design of the distribution system are outlined. The present status, the plans for fabrication, and the procurement approach for the helium distribution system are also included.

  17. Superconductor rotor cooling system

    DOE Patents [OSTI]

    Gamble, Bruce B.; Sidi-Yekhlef, Ahmed; Schwall, Robert E.; Driscoll, David I.; Shoykhet, Boris A.

    2004-11-02T23:59:59.000Z

    A system for cooling a superconductor device includes a cryocooler located in a stationary reference frame and a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with a rotating reference frame in which the superconductor device is located. A method of cooling a superconductor device includes locating a cryocooler in a stationary reference frame, and transferring heat from a superconductor device located in a rotating reference frame to the cryocooler through a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with the rotating reference frame.

  18. Superconductor rotor cooling system

    DOE Patents [OSTI]

    Gamble, Bruce B. (Wellesley, MA); Sidi-Yekhlef, Ahmed (Framingham, MA); Schwall, Robert E. (Northborough, MA); Driscoll, David I. (South Euclid, OH); Shoykhet, Boris A. (Beachwood, OH)

    2002-01-01T23:59:59.000Z

    A system for cooling a superconductor device includes a cryocooler located in a stationary reference frame and a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with a rotating reference frame in which the superconductor device is located. A method of cooling a superconductor device includes locating a cryocooler in a stationary reference frame, and transferring heat from a superconductor device located in a rotating reference frame to the cryocooler through a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with the rotating reference frame.

  19. B.4 ROOF SYSTEMS B.4 Roof System

    E-Print Network [OSTI]

    Gelfond, Michael

    B.4 ROOF SYSTEMS B.4 Roof System Page 1 of 4 Attachment C 05/07/09 SYSTEM AUDIT INSPECTION REPORT SUMMARY B4-Roof System Facility Name: Facility #: Audit By: Audit Date: SYSTEM CONDITION RATING WORK ORDER/CIP # #12;B.4 ROOF SYSTEMS B.4 Roof System Page 2 of 4 Attachment C 05/07/09 Sub

  20. Active optical zoom system

    DOE Patents [OSTI]

    Wick, David V.

    2005-12-20T23:59:59.000Z

    An active optical zoom system changes the magnification (or effective focal length) of an optical imaging system by utilizing two or more active optics in a conventional optical system. The system can create relatively large changes in system magnification with very small changes in the focal lengths of individual active elements by leveraging the optical power of the conventional optical elements (e.g., passive lenses and mirrors) surrounding the active optics. The active optics serve primarily as variable focal-length lenses or mirrors, although adding other aberrations enables increased utility. The active optics can either be LC SLMs, used in a transmissive optical zoom system, or DMs, used in a reflective optical zoom system. By appropriately designing the optical system, the variable focal-length lenses or mirrors can provide the flexibility necessary to change the overall system focal length (i.e., effective focal length), and therefore magnification, that is normally accomplished with mechanical motion in conventional zoom lenses. The active optics can provide additional flexibility by allowing magnification to occur anywhere within the FOV of the system, not just on-axis as in a conventional system.

  1. Power Systems Control Architecture

    SciTech Connect (OSTI)

    James Davidson

    2005-01-01T23:59:59.000Z

    A diagram provided in the report depicts the complexity of the power systems control architecture used by the national power structure. It shows the structural hierarchy and the relationship of the each system to those other systems interconnected to it. Each of these levels provides a different focus for vulnerability testing and has its own weaknesses. In evaluating each level, of prime concern is what vulnerabilities exist that provide a path into the system, either to cause the system to malfunction or to take control of a field device. An additional vulnerability to consider is can the system be compromised in such a manner that the attacker can obtain critical information about the system and the portion of the national power structure that it controls.

  2. Relativistic Positioning Systems

    E-Print Network [OSTI]

    Bartolomé Coll

    2006-02-01T23:59:59.000Z

    The theory of relativistic {\\em location systems} is sketched. An interesting class of these systems is that of relativistic {\\em positioning systems,} which consists in sets of four clocks broadcasting their proper time. Among them, the more important ones are the {\\em auto-located positioning systems,} in which every clock broadcasts not only its proper time but the proper times that it receives from the other three. At this level, no reference to any exterior system (the Earth surface, for example) and no synchronization are needed. Some properties are presented. In the SYPOR project, such a structure is proposed, eventually anchored to a classical reference system on the Earth surface, as the best relativistic structure for Global Navigation Satellite Systems.

  3. LM Records Handling System-Fernald Historical Records System...

    Office of Environmental Management (EM)

    Fernald Historical Records System, Office of Legacy Management LM Records Handling System-Fernald Historical Records System, Office of Legacy Management LM Records Handling...

  4. System-Level Monitoring and Diagnosis of Building HVAC System

    E-Print Network [OSTI]

    Wu, Siyu

    2013-01-01T23:59:59.000Z

    integrated into building automation systems, particularlyfrom existing building automation systems (BASs) for add-onof modern building automation and control systems, we have

  5. NREL: Systems Engineering - 2015 Wind Energy Systems Engineering...

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

    Research Systems Engineering Printable Version 2015 Wind Energy Systems Engineering Workshop The third NREL Wind Energy Systems Engineering Workshop took place on the 14th and 15th...

  6. Control system health test system and method

    DOE Patents [OSTI]

    Hoff, Brian D.; Johnson, Kris W.; Akasam, Sivaprasad; Baker, Thomas M.

    2006-08-15T23:59:59.000Z

    A method is provided for testing multiple elements of a work machine, including a control system, a component, a sub-component that is influenced by operations of the component, and a sensor that monitors a characteristic of the sub-component. In one embodiment, the method is performed by the control system and includes sending a command to the component to adjust a first parameter associated with an operation of the component. Also, the method includes detecting a sensor signal from the sensor reflecting a second parameter associated with a characteristic of the sub-component and determining whether the second parameter is acceptable based on the command. The control system may diagnose at least one of the elements of the work machine when the second parameter of the sub-component is not acceptable.

  7. Automated Information System (AIS) Alarm System

    SciTech Connect (OSTI)

    Hunteman, W.

    1997-05-01T23:59:59.000Z

    The Automated Information Alarm System is a joint effort between Los Alamos National Laboratory, Lawrence Livermore National Laboratory, and Sandia National Laboratory to demonstrate and implement, on a small-to-medium sized local area network, an automated system that detects and automatically responds to attacks that use readily available tools and methodologies. The Alarm System will sense or detect, assess, and respond to suspicious activities that may be detrimental to information on the network or to continued operation of the network. The responses will allow stopping, isolating, or ejecting the suspicious activities. The number of sensors, the sensitivity of the sensors, the assessment criteria, and the desired responses may be set by the using organization to meet their local security policies.

  8. Quality monitored distributed voting system

    DOE Patents [OSTI]

    Skogmo, D.

    1997-03-18T23:59:59.000Z

    A quality monitoring system can detect certain system faults and fraud attempts in a distributed voting system. The system uses decoy voters to cast predetermined check ballots. Absent check ballots can indicate system faults. Altered check ballots can indicate attempts at counterfeiting votes. The system can also cast check ballots at predetermined times to provide another check on the distributed voting system. 6 figs.

  9. Quality monitored distributed voting system

    DOE Patents [OSTI]

    Skogmo, David (Albuquerque, NM)

    1997-01-01T23:59:59.000Z

    A quality monitoring system can detect certain system faults and fraud attempts in a distributed voting system. The system uses decoy voters to cast predetermined check ballots. Absent check ballots can indicate system faults. Altered check ballots can indicate attempts at counterfeiting votes. The system can also cast check ballots at predetermined times to provide another check on the distributed voting system.

  10. Reproducibility in a multiprocessor system

    DOE Patents [OSTI]

    Bellofatto, Ralph A; Chen, Dong; Coteus, Paul W; Eisley, Noel A; Gara, Alan; Gooding, Thomas M; Haring, Rudolf A; Heidelberger, Philip; Kopcsay, Gerard V; Liebsch, Thomas A; Ohmacht, Martin; Reed, Don D; Senger, Robert M; Steinmacher-Burow, Burkhard; Sugawara, Yutaka

    2013-11-26T23:59:59.000Z

    Fixing a problem is usually greatly aided if the problem is reproducible. To ensure reproducibility of a multiprocessor system, the following aspects are proposed; a deterministic system start state, a single system clock, phase alignment of clocks in the system, system-wide synchronization events, reproducible execution of system components, deterministic chip interfaces, zero-impact communication with the system, precise stop of the system and a scan of the system state.

  11. Systems Engineering Handbook Foreword ................................ ................................ ................................ ............................ ix

    E-Print Network [OSTI]

    Rhoads, James

    NASA Systems Engineering Handbook SP-610S June 1995 #12;Contents Foreword ................................ ................................ ................................ .... 1 Fundamentals of System Engineering ................................ ............................ 3 Definition of Systems Engineering

  12. Systems Engineering | Department of Energy

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

    Systems Engineering Systems Engineering Project objectives: to create an interactive, physics based, systems analysis tool for geothermal energy development that will: Identify...

  13. Information in coordinated system control

    E-Print Network [OSTI]

    Kang, Keunmo

    2008-01-01T23:59:59.000Z

    nonlinear systems’, IEEE Transaction of Automatic Controllinear systems’, IEEE Transactions on Automatic Control 23,nonlinear systems’, IEEE Transactions on Automatic Control

  14. Sandia National Laboratories: Systems Modeling

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

    AnalysisSystems Modeling Systems Modeling Technical Expertise Projects Demos Partners Biographies Publications Technical Expertise Computer Assisted (CA) System dynamics modeling...

  15. Atmospheric Pressure Reactor System | EMSL

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

    Atmospheric Pressure Reactor System Atmospheric Pressure Reactor System The atmospheric pressure reactor system is designed for testing the efficiency of various catalysts for the...

  16. Advanced Integrated Systems Technology Development

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    prototype personal comfort system devices, (5) a buildingprototype personal comfort system devices, (5) a buildingparts. Each personal comfort system device creates normal

  17. FMIT facility control system

    SciTech Connect (OSTI)

    Suyama, R.M.; Machen, D.R.; Johnson, J.A.

    1981-01-01T23:59:59.000Z

    The control system for the Fusion Materials Irradiation Test (FMIT) Facility, under construction at Richland, Washington, uses current techniques in distributed processing to achieve responsiveness, maintainability and reliability. Developmental experience with the system on the FMIT Prototype Accelerator (FPA) being designed at the Los Alamos National Laboratory is described as a function of the system's design goals and details. The functional requirements of the FMIT control system dictated the use of a highly operator-responsive, display-oriented structure, using state-of-the-art console devices for man-machine communications. Further, current technology has allowed the movement of device-dependent tasks into the area traditionally occupied by remote input-output equipment; the system's dual central process computers communicate with remote communications nodes containing microcomputers that are architecturally similar to the top-level machines. The system has been designed to take advantage of commercially available hardware and software.

  18. Static scheduling of synchronous data flow programs for digital signal processing

    SciTech Connect (OSTI)

    Lee, E.A.; Messerschmitt, D.G.

    1987-01-01T23:59:59.000Z

    Large grain data flow (LGDF) programming is natural and convenient for describing digital signal processing (DSP) systems, but its runtime overhead is costly in real time or cost-sensitive applications. In some situations, designers are not willing to squander computing resources for the sake of programmer convenience. This is particularly true when the target machine is a programmable DSP chip. However, the runtime overhead inherent in most LGDF implementations is not required for most signal processing systems because such systems are mostly synchronous (in the DSP sense). Synchronous data flow (SDF) differs from traditional data flow in that the amount of data produced and consumed by a data flow node is specified a priori for each input and output. This is equivalent to specifying the relative sample rates in signal processing system. This means that the scheduling of SDF nodes need not be done at runtime, but can be done at compile time (statically), so the runtime overhead evaporates. The sample rates can all be different, which is not true of most current data-driven digital signal processing programming methodologies. Synchronous data flow is closely related to computation graphs, a special case of Petri nets. This self-contained paper develops the theory necessary to statically schedule SDF programs on single or multiple processors. A class of static (compile time) scheduling algorithms is proven valid, and specific algorithms are given for scheduling SDF systems onto single or multiple processors.

  19. Photovoltaic Systems Interconnected onto Secondary Network Distribution Systems – Success Stories

    Broader source: Energy.gov [DOE]

    This report examines six case studies of photovoltaic (PV) systems integrated into secondary network systems. The six PV systems were chosen for evaluation because they are interconnected to secondary network systems located in four major Solar America Cities.

  20. On-Site Wastewater Treatment Systems: Mound System

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2002-04-22T23:59:59.000Z

    A mound system is a soil absorption system placed above the natural surface of the ground. The system distributes treated wastewater into the soil. This publication discusses the design and maintenance of mound systems....

  1. Systems Portfolio Guide A Resource For Creating Your Systems Portfolio

    E-Print Network [OSTI]

    Amin, S. Massoud

    Systems Portfolio Guide A Resource For Creating Your Systems Portfolio Academic Quality Improvement Program Contents The Systems Portfolio........................................................................................................... 9 Using the Systems Portfolio to document the Criteria for Accreditation

  2. Collaborative Systems Thinking Research: Exploring systems thinking within teams

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Collaborative Systems Thinking Research: Exploring systems thinking within teams Caroline T. Lamb research that seeks to develop an empirical basis for collaborative systems thinking, defined as "an of thinking styles, design processes, tools, and communication media to consider system attributes

  3. Categorical Introduction to Dynamical Systems Symbolic Dynamical Systems

    E-Print Network [OSTI]

    Kahng, Byung-Jay

    Categorical Introduction to Dynamical Systems Symbolic Dynamical Systems Symbolic Embedding Examples Results Embeddings in Symbolic Dynamical Systems Jonathan Jaquette Swarthmore College July 22, 2009 Jonathan Jaquette Embeddings in Symbolic Dynamical Systems #12;Categorical Introduction

  4. ENGINEERING SYSTEMS THE FUTURE OF ENGINEERING SYSTEMS: DEVELOPMENT OF

    E-Print Network [OSTI]

    de Weck, Olivier L.

    ENGINEERING SYSTEMS MONOGRAPH THE FUTURE OF ENGINEERING SYSTEMS: DEVELOPMENT OF ENGINEERING LEADERS OF ENGINEERING SYSTEMS: DEVELOPMENT OF ENGINEERING LEADERS Daniel Hastings INTRODUCTION From birth through death, inhabitants of developed societies live supported in a complex, interconnected set of overlapping systems

  5. Plasmatron-catalyst system

    DOE Patents [OSTI]

    Bromberg, Leslie (Sharon, MA); Cohn, Daniel R. (Chestnut Hill, MA); Rabinovich, Alexander (Swampscott, MA); Alexeev, Nikolai (Moscow, RU)

    2007-10-09T23:59:59.000Z

    A plasmatron-catalyst system. The system generates hydrogen-rich gas and comprises a plasmatron and at least one catalyst for receiving an output from the plasmatron to produce hydrogen-rich gas. In a preferred embodiment, the plasmatron receives as an input air, fuel and water/steam for use in the reforming process. The system increases the hydrogen yield and decreases the amount of carbon monoxide.

  6. Precision displacement reference system

    DOE Patents [OSTI]

    Bieg, Lothar F. (Albuquerque, NM); Dubois, Robert R. (Albuquerque, NM); Strother, Jerry D. (Edgewood, NM)

    2000-02-22T23:59:59.000Z

    A precision displacement reference system is described, which enables real time accountability over the applied displacement feedback system to precision machine tools, positioning mechanisms, motion devices, and related operations. As independent measurements of tool location is taken by a displacement feedback system, a rotating reference disk compares feedback counts with performed motion. These measurements are compared to characterize and analyze real time mechanical and control performance during operation.

  7. Control Systems & LEED

    SciTech Connect (OSTI)

    Cooperman, Alissa; Dieckmann, John; Brodrick, James

    2012-06-01T23:59:59.000Z

    This article discusses the LEED guidelines (2009 v3), and corresponding points, that can only be attained using control systems for lighting, HVAC, and/or the entire building. Integrating and centralizing control systems allows for better building management, energy savings and can potentially award 29 points towards certification across the following categories: Sustainable Sites, Energy & Atmosphere, and Indoor Air Quality. In closing, potential energy savings are highlighted and the overall market potential for control systems are summarized.

  8. Solid source MOCVD system

    DOE Patents [OSTI]

    Hubert, B.N.; Wu, X.D.

    1998-10-13T23:59:59.000Z

    A system for MOCVD fabrication of superconducting and non-superconducting oxide films provides a delivery system for the feeding of metallorganic precursors for multi-component chemical vapor deposition. The delivery system can include multiple cartridges containing tightly packed precursor materials. The contents of each cartridge can be ground at a desired rate and fed together with precursor materials from other cartridges to a vaporization zone and then to a reaction zone within a deposition chamber for thin film deposition. 13 figs.

  9. Solid source MOCVD system

    DOE Patents [OSTI]

    Hubert, Brian N. (Yakima, WA); Wu, Xin Di (San Jose, CA)

    1998-01-01T23:59:59.000Z

    A system for MOCVD fabrication of superconducting and non-superconducting oxide films provides a delivery system for the feeding of metalorganic precursors for multi-component chemical vapor deposition. The delivery system can include multiple cartridges containing tightly packed precursor materials. The contents of each cartridge can be ground at a desired rate and fed together with precursor materials from other cartridges to a vaporization zone and then to a reaction zone within a deposition chamber for thin film deposition.

  10. Steam System Data Management

    E-Print Network [OSTI]

    Roberts, D.

    2013-01-01T23:59:59.000Z

    Steam System Data Management What Does It Include Safety In Motion Wal?Tech?Valve,?Inc. 251?438?2203 The Real Genius Behind Technology Is People ESL-IE-13-05-35 Proceedings of the Thrity-Fifth Industrial Energy Technology Conference New... ? Fabrication Training (Six Year Training) ? Welding Certifications ?Retired From Chevron After 25 Years ? Established A Steam System Program ? Planner For Routine Maintenance Work ? Planner For Steam System Improvements ? Wal-Tech Valve, Inc. ? Purchased...

  11. LRRB Pavement Management Systems Pavement Management Systems

    E-Print Network [OSTI]

    Minnesota, University of

    Survey: who is using what · Details about specific software/use · Case studies #12;Report (continued) Key Outcome ­ Matrix #12;Report (continued) Key Outcome ­ Case Studies (15 agencies) § Various levels of use Pavement Management Systems Workshop outline 1. Overview 2. Benefits 3. Elements 4. Case Studies 5

  12. Geoscience laser altimeter system - stellar reference system

    SciTech Connect (OSTI)

    Millar, Pamela S.; Sirota, J. Marcos [NASA Goddard Space Flight Center, Laser Remote Sensing Branch, Code 924, Greenbelt, Maryland, 20771 (United States); University of Maryland at Baltimore County, 5401 Wilkens Ave, Baltimore, Maryland, 21228-5398 (United States)

    1998-01-15T23:59:59.000Z

    GLAS is an EOS space-based laser altimeter being developed to profile the height of the Earth's ice sheets with {approx}15 cm single shot accuracy from space under NASA's Mission to Planet Earth (MTPE). The primary science goal of GLAS is to determine if the ice sheets are increasing or diminishing for climate change modeling. This is achieved by measuring the ice sheet heights over Greenland and Antarctica to 1.5 cm/yr over 100 kmx100 km areas by crossover analysis (Zwally 1994). This measurement performance requires the instrument to determine the pointing of the laser beam to {approx}5 urad (1 arcsecond), 1-sigma, with respect to the inertial reference frame. The GLAS design incorporates a stellar reference system (SRS) to relate the laser beam pointing angle to the star field with this accuracy. This is the first time a spaceborne laser altimeter is measuring pointing to such high accuracy. The design for the stellar reference system combines an attitude determination system (ADS) with a laser reference system (LRS) to meet this requirement. The SRS approach and expected performance are described in this paper.

  13. Thermal Control & System Integration

    Broader source: Energy.gov [DOE]

    The thermal control and system integration activity focuses on issues such as the integration of motor and power control technologies and the development of advanced thermal control technologies....

  14. Hydrogen purification system

    DOE Patents [OSTI]

    Golben, Peter Mark

    2010-06-15T23:59:59.000Z

    The present invention provides a system to purify hydrogen involving the use of a hydride compressor and catalytic converters combined with a process controller.

  15. EMSL - Atmospheric Aerosol Systems

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

    scienceatmospheric The Atmospheric Aerosol Systems Science Theme focuses on understanding the chemistry, physics and molecular-scale dynamics of aerosols for model...

  16. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    PEC and PV system. The energy and area requirements for arequires the least energy and area. A MED desalination plantcompare the energy consumption and area of devices needed,

  17. Environmental Management System Plan

    E-Print Network [OSTI]

    Fox, Robert

    2009-01-01T23:59:59.000Z

    Management Program, R-3 • Environmental Management SystemEnvironmental policy 3. Environmental aspects 4. Legal andObjectives, targets, and Environmental Management Programs

  18. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    direct solar radiation onto the PEC cell and tracking isTracking Concentration…………………….39 Figure 1.20: PV-RO System……………………………………………………………..42 Figure 1.21: Solar

  19. Genomics and Systems Biology

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

    Genomics and Systems Biology LANL leads the world in computational finishing of microbial genomes Read caption + In 2013, Los Alamos scientist Richard Sayre and his team...

  20. Standard Subject Classification System

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

    1979-08-14T23:59:59.000Z

    The order establishes the DOE Standard Subject Classification System for classifying documents and records by subject, including correspondence, directives, and forms.Cancels DOE O 0000.1.

  1. Norcal Waste Systems, Inc.

    SciTech Connect (OSTI)

    Not Available

    2002-12-01T23:59:59.000Z

    Fact sheet describes the LNG long-haul heavy-duty trucks at Norcal Waste Systems Inc.'s Sanitary Fill Company.

  2. Energy Management Systems

    E-Print Network [OSTI]

    Ferland, K.

    2007-01-01T23:59:59.000Z

    This presentation will address results from a pilot project with 10 chemical plants on energy management systems and the development of an energy efficiency plant certification program....

  3. The Epicure Control System

    SciTech Connect (OSTI)

    Dambik, E.; Kline, D.; West, R.

    1993-09-01T23:59:59.000Z

    The Epicure Control System supports the Fermilab fixed target physics program. The system is distributed across a network of many different types of components. The use of multiple layers on interfaces for communication between logical tasks fits the client-server model. Physical devices are read and controlled using symbolic references entered into a database with an editor utility. The database system consists of a central portion containing all device information and optimized portions distributed among many nodes. Updates to the database are available throughout the system within minutes after being requested.

  4. Remote Systems Design & Deployment

    SciTech Connect (OSTI)

    Bailey, Sharon A.; Baker, Carl P.; Valdez, Patrick LJ

    2009-08-28T23:59:59.000Z

    The Pacific Northwest National Laboratory (PNNL) was tasked by Washington River Protection Solutions, LLC (WRPS) to provide information and lessons learned relating to the design, development and deployment of remote systems, particularly remote arm/manipulator systems. This report reflects PNNL’s experience with remote systems and lays out the most important activities that need to be completed to successfully design, build, deploy and operate remote systems in radioactive and chemically contaminated environments. It also contains lessons learned from PNNL’s work experiences, and the work of others in the national laboratory complex.

  5. Aerial Measuring System

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

    1991-09-20T23:59:59.000Z

    To establish policy for the Department of Energy's (DOE) Aerial Measuring System (AMS) Program. This directive does not cancel another directive. Canceled by DOE O 153.1.

  6. Transient data recorder systems

    SciTech Connect (OSTI)

    Gradl, David A. (Des Plaines, IL)

    1982-01-01T23:59:59.000Z

    Transient data recorder systems including a high speed charge coupled device and a device exerciser, including a high speed sampler and driver circuitry.

  7. System Protection Control Craftman

    Broader source: Energy.gov [DOE]

    A successful candidate will perform preventative and corrective maintenance on protective relays, revenue meters, telemetering schemes, substation control systems and various kinds of substation...

  8. Comprehensive Emergency Management System

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

    2005-11-02T23:59:59.000Z

    The Order establishes policy and assigns roles and responsibilities for the Department of Energy (DOE) Emergency Management System. Cancels DOE O 151.1B.

  9. Systems Biology. | EMSL

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

    Biology. Systems Biology. Abstract: The biology revolution over the last 50 years has been driven by the ascendancy of molecular biology. This was enthusiastically embraced by most...

  10. Multiple System Rate Process

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

    DSW Multiple System Transmission Rate Process Federal Register Notice Withdrawing Rate Proposal (PDF) Formal Process Extension Federal Register Notice (PDF) Customer Savisngs Under...

  11. ETSU Emergency Notification Systems Purpose of the Alert Warning System

    E-Print Network [OSTI]

    Karsai, Istvan

    ETSU Emergency Notification Systems Purpose of the Alert Warning System The alert warning system on the ETSU and VA Campuses. The system consists of strategically placed sirens that warn the university/voice message system acts in conjunction with other emergency information systems ETSU has in place (ETSU Gold

  12. Evolving Systems Engineering as a Field within Engineering Systems

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Evolving Systems Engineering as a Field within Engineering Systems Donna H. Rhodes Massachusetts Topics Systems of Interest are... Comparison of SE and ES ES as "Context Field" Impact Example of SE Management Social Science Engineering Systems Engineering Systems: Field of Scholarship ENGINEERING SYSTEMS

  13. Computer Systems and Network Manager

    E-Print Network [OSTI]

    Computer Systems and Network Manager Fort Collins, Colorado POSITION A Computers Systems activities. RESPONSIBILITIES The successful candidate will perform computer systems and network administration, including computer hardware, systems software, applications software, and all configurations

  14. Sandia National Laboratories: Systems Analysis

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

    Photovoltaic, Photovoltaic Systems Evaluation Laboratory (PSEL), Renewable Energy, Solar, Solar Newsletter, Systems Analysis The PV Performance Modeling Collaborative (PVPMC)...

  15. Sandia National Laboratories: Systems Analysis

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

    Grid Integration, Infrastructure Security, Microgrid, News, News & Events, Renewable Energy, Systems Analysis, Systems Engineering, Transmission Grid Integration A lot that...

  16. Housing System Financial Statements

    E-Print Network [OSTI]

    Fernandez, Eduardo

    Housing System Financial Statements June 30, 2010 #12;FLORIDA ATLANTIC UNIVERSITY HOUSING SYSTEM's Housing Division's (Housing) financial performance provides an overview of the financial activities for the fiscal year ended June 30, 2010. Please read it in conjunction with Housing's financial statements

  17. Heavy Vehicle Systems

    SciTech Connect (OSTI)

    Sid Diamond; Richard Wares; Jules Routbort

    2000-04-11T23:59:59.000Z

    Heavy Vehicle (HV) systems are a necessary component of achieving OHVT goals. Elements are in place for a far-ranging program: short, intermediate, and long-term. Solicitation will bring industrial input and support. Future funding trend is positive, outlook for HV systems is good.

  18. Microelectromechanical Systems Opportunities

    E-Print Network [OSTI]

    Akin, Tayfun

    is required. Here we report a microelectromechanical system (MEMS) designed for the tensile testing November 2004; published online 28 December 2004) We report on the performance of a microelectromechanical system (MEMS) designed for the in situ electron and x-ray microscopy tensile testing of nanostructures, e

  19. Purge water management system

    DOE Patents [OSTI]

    Cardoso-Neto, Joao E. (North Augusta, SC); Williams, Daniel W. (Aiken, SC)

    1996-01-01T23:59:59.000Z

    A purge water management system for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at the well site. A pump, positioned with the monitoring well, pumps groundwater through the transportation system into the expandable container, which expands in direct proportion with volume of groundwater introduced, usually three or four well volumes, yet prevents the groundwater from coming into contact with the oxygen in the air. After this quantity of groundwater has been removed from the well, a sample is taken from a sampling port, after which the groundwater in the expandable container can be returned to the monitoring well through the return system. The purge water management system prevents the purge water from coming in contact with the outside environment, especially oxygen, which might cause the constituents of the groundwater to oxidize. Therefore, by introducing the purge water back into the monitoring well, the necessity of dealing with the purge water as a hazardous waste under the Resource Conservation and Recovery Act is eliminated.

  20. Overview of locking systems

    SciTech Connect (OSTI)

    Gee, K.T.; Scott, S.H.; Wilde, M.G. [Sandia National Labs., Albuquerque, NM (United States); Highland, S.E. [Albuquerque Safe Co., Albuquerque, NM (United States)

    1993-12-01T23:59:59.000Z

    The purpose of this document is to present technical information that should be useful for understanding and applying locking systems for physical protection and control. There are major sections on hardware for locks, vaults, safes, and security containers. Other topics include management of lock systems and safety considerations. This document also contains notes on standards and specifications and a glossary.

  1. Challenges in Embedded Systems

    E-Print Network [OSTI]

    Koopman, Philip

    even if AC power available u Harsh environment · Power fluctuations, RF interference, lightning · Heat Can't You Design Embedded Systems Just Like Desktop Systems? #12;10 Case Study: Synthesize A Remote-by-composition tool #12;11 What's A Remote Entry Receiver? u RF receiver for door locks, trunk (boot), latch, etc. · 8

  2. Thermoelectrochemical system and method

    DOE Patents [OSTI]

    Ludwig, Frank A. (Rancho Palos Verdes, CA); Townsend, Carl W. (Los Angeles, CA); Eliash, Bruce M. (Los Angeles, CA)

    1995-11-28T23:59:59.000Z

    A thermal electrochemical system in which an electrical current is generated between a cathode immersed in a concentrated aqueous solution of phosphoric acid and an anode immersed in a molten salt solution of ammonium phosphate and monohydric ammonium phosphate. Reactants consumed at the electrodes during the electrochemical reaction are thermochemically regenerated and recycled to the electrodes to provide continuous operation of the system.

  3. Comprehensive Emergency Management System

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

    2000-11-01T23:59:59.000Z

    To establish policy and to assign and describe roles and responsibilities for the Department of Energy (DOE) Emergency Management System. The Emergency Management System provides the framework for development, coordination, control, and direction of all emergency planning, preparedness, readiness assurance, response, and recovery actions. Canceled by DOE O 151.1B. Cancels DOE O 151.1.

  4. Introduction to Distributed Systems

    E-Print Network [OSTI]

    Pous, Damien

    1 Introduction to Distributed Systems Fabienne Boyer, LIG, fabienne.boyer@inria.fr Sources: Cours d'Olivier Gruber, Sacha Krakowiak, Sara Bouchenak, UJF Fabienne Boyer, Distributed Programming 2 Objectives Study conceptual and practical aspects of distributed systems l Client-server model l Distributed protocols l

  5. Technology reviews: Glazing systems

    SciTech Connect (OSTI)

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

    1992-09-01T23:59:59.000Z

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

  6. Technology reviews: Shading systems

    SciTech Connect (OSTI)

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

    1992-09-01T23:59:59.000Z

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

  7. Systems Integration (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-10-01T23:59:59.000Z

    The Systems Integration (SI) subprogram works closely with industry, universities, and the national laboratories to overcome technical barriers to the large-scale deployment of solar technologies. To support these goals, the subprogram invests primarily in four areas: grid integration, technology validation, solar resource assessment, and balance of system development.

  8. Filter service system

    DOE Patents [OSTI]

    Sellers, Cheryl L. (Peoria, IL); Nordyke, Daniel S. (Arlington Heights, IL); Crandell, Richard A. (Morton, IL); Tomlins, Gregory (Peoria, IL); Fei, Dong (Peoria, IL); Panov, Alexander (Dunlap, IL); Lane, William H. (Chillicothe, IL); Habeger, Craig F. (Chillicothe, IL)

    2008-12-09T23:59:59.000Z

    According to an exemplary embodiment of the present disclosure, a system for removing matter from a filtering device includes a gas pressurization assembly. An element of the assembly is removably attachable to a first orifice of the filtering device. The system also includes a vacuum source fluidly connected to a second orifice of the filtering device.

  9. Geothermal Data Systems

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) Geothermal Technologies Office (GTO) has designed and tested a comprehensive, federated information system that will make geothermal data widely available. This new National Geothermal Data System (NGDS) will provide access to all types of geothermal data to enable geothermal analysis and widespread public use, thereby reducing the risk of geothermal energy development.

  10. Environmental geographic information system.

    SciTech Connect (OSTI)

    Peek, Dennis; Helfrich, Donald Alan; Gorman, Susan

    2010-08-01T23:59:59.000Z

    This document describes how the Environmental Geographic Information System (EGIS) was used, along with externally received data, to create maps for the Site-Wide Environmental Impact Statement (SWEIS) Source Document project. Data quality among the various classes of geographic information system (GIS) data is addressed. A complete listing of map layers used is provided.

  11. Purge water management system

    DOE Patents [OSTI]

    Cardoso-Neto, J.E.; Williams, D.W.

    1995-01-01T23:59:59.000Z

    A purge water management system is described for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at the well site. A pump, positioned with the monitoring well, pumps groundwater through the transportation system into the expandable container, which expands in direct proportion with volume of groundwater introduced, usually three or four well volumes, yet prevents the groundwater from coming into contact with the oxygen in the air. After this quantity of groundwater has been removed from the well, a sample is taken from a sampling port, after which the groundwater in the expandable container can be returned to the monitoring well through the return system. The purge water management system prevents the purge water from coming in contact with the outside environment, especially oxygen, which might cause the constituents of the groundwater to oxidize. Therefore, by introducing the purge water back into the monitoring well, the necessity of dealing with the purge water as a hazardous waste under the Resource Conservation and Recovery Act is eliminated.

  12. Radiation detection system

    DOE Patents [OSTI]

    Franks, Larry A. (Santa Barbara, CA); Lutz, Stephen S. (Santa Barbara, CA); Lyons, Peter B. (Los Alamos, NM)

    1981-01-01T23:59:59.000Z

    A radiation detection system including a radiation-to-light converter and fiber optic wave guides to transmit the light to a remote location for processing. The system utilizes fluors particularly developed for use with optical fibers emitting at wavelengths greater than about 500 nm and having decay times less than about 10 ns.

  13. Grinding Wheel System

    DOE Patents [OSTI]

    Malkin, Stephen (Amherst, MA); Gao, Robert (Amherst, MA); Guo, Changsheng (South Windsor, CT); Varghese, Biju (Worthington, OH); Pathare, Sumukh (Waltham, MA)

    2003-08-05T23:59:59.000Z

    A grinding wheel system includes a grinding wheel with at least one embedded sensor. The system also includes an adapter disk containing electronics that process signals produced by each embedded sensor and that transmits sensor information to a data processing platform for further processing of the transmitted information.

  14. Grinding Wheel System

    DOE Patents [OSTI]

    Malkin, Stephen (Amherst, MA); Gao, Robert (Amherst, MA); Guo, Changsheng (South Windsor, CT); Varghese, Biju (Worthington, OH); Pathare, Sumukh (Waltham, MA)

    2006-01-10T23:59:59.000Z

    A grinding wheel system includes a grinding wheel with at least one embedded sensor. The system also includes an adapter disk containing electronics that process signals produced by each embedded sensor and that transmits sensor information to a data processing platform for further processing of the transmitted information.

  15. STRATEGIC FOCUS: Sustainable Systems

    E-Print Network [OSTI]

    in solar power generation, controls, and management as well as in alternate and new energy re- sources to install solar photovoltaic electric systems and wind turbines for the school system's renewable energy. The goal is to prepare Newark students to become part of a future workforce for the energy and power

  16. Characterizing the Performance of Parallel Applications on Multi-Socket Virtual Machines

    E-Print Network [OSTI]

    compared to native. Runs on "cold" VMs suffer an average performance degradation of 27%, while subsequent partitioning with proper VM and runtime support is able to re-produce native performance: in a partitioned system with one virtual machine per socket the average workload performance is 5% better than native. I

  17. On the Energy-Efficiency of Speculative Hardware Nana B. Sam

    E-Print Network [OSTI]

    Burtscher, Martin

    On the Energy-Efficiency of Speculative Hardware Nana B. Sam Computer Systems Laboratory Cornell, several researchers have pro- posed and evaluated energy-efficient variants of speculation mechanisms to accurately com- pare the energy-efficiency of speculative architectures. Our met- ric is based on runtime

  18. Journal of VLSI Signal Processing 28, 7--27, 2001 # 2001 Kluwer Academic Publishers. Manufactured in The Netherlands.

    E-Print Network [OSTI]

    Tessier, Russell

    been initiated to support power optimization, cost reduction, and enhanced run­time performance available. As initial reconfigurable technologies have emerged, new academic and commer­ cial efforts have (PDSPs) remain the implementation mechanisms of choice for many DSP applications, increasingly new system

  19. Journal of VLSI Signal Processing 28, 727, 2001 c 2001 Kluwer Academic Publishers. Manufactured in The Netherlands.

    E-Print Network [OSTI]

    Tessier, Russell

    been initiated to support power optimization, cost reduction, and enhanced run-time performance available. As initial reconfigurable technologies have emerged, new academic and commer- cial efforts have (PDSPs) remain the implementation mechanisms of choice for many DSP applications, increasingly new system

  20. RELIABILITY, AVAILABILITY, AND SERVICEABILITY FOR PETASCALE HIGH-END COMPUTING AND BEYOND

    SciTech Connect (OSTI)

    Chokchai "Box" Leangsuksun

    2011-05-31T23:59:59.000Z

    Our project is a multi-institutional research effort that adopts interplay of RELIABILITY, AVAILABILITY, and SERVICEABILITY (RAS) aspects for solving resilience issues in highend scientific computing in the next generation of supercomputers. results lie in the following tracks: Failure prediction in a large scale HPC; Investigate reliability issues and mitigation techniques including in GPGPU-based HPC system; HPC resilience runtime & tools.

  1. ArchitectureArchitecture--Independent Programming andIndependent Programming and SynthesisSynthesis of Networked Sensing Applicationsof Networked Sensing Applications Amol Bakshi, Viktor K. Prasanna

    E-Print Network [OSTI]

    Hwang, Kai

    Larner Palo Alto Research Center 3333 Coyote Hill Rd, Palo Alto CA larner@parc.com Fourth International by a runtime · Programmer does not write networking code · System-level optimizations can be performed without requiring rewrite of application-level code · Pros: Modularity, reusability, extensibility, low program

  2. Dynamic Power ... Abbasian et. al.1 Wavelet-Based Dynamic Power Management for

    E-Print Network [OSTI]

    Pedram, Massoud

    Dynamic Power ... Abbasian et. al.1 Wavelet-Based Dynamic Power Management for Non and Phrases: Dynamic Power Management, Wavelet based prediction, non-stationary service request. Low Power and frequency scaling (DVFS) and dynamic power management (DPM), use runtime behavior of the system to reduce

  3. Integrating Generations with Advanced Reference Counting Garbage Collectors

    E-Print Network [OSTI]

    Krintz, Chandra

    Integrating Generations with Advanced Reference Counting Garbage Collectors Hezi Azatchi 1 and Erez counting work on the old generation (where many objects survive). Matching the expected survival rate a couple of milliseconds. Keywords: Runtime systems, Memory management, Garbage collection, Genera- tional

  4. PROTECTING INFRASTRUCTURE ASSETS FROM REAL-TIME

    E-Print Network [OSTI]

    Burmester, Mike

    to critical infrastructure assets. The paper defines a threat model, an- alyzes vulnerabilities, proposes in an electricity grid. Also, it discusses the impact of run-time attacks on TC-compliant critical infrastructure. The crucial nature of the services provided by critical infrastructure systems and the vulnerabilities found

  5. Virtualized Environments for the Harness Workbench

    E-Print Network [OSTI]

    Engelmann, Christian

    Of The Requirements For The Degree Of Master of Science In Network Centered Computing, High Performance Computing of computational sciences today leads to a signicant need of high performance computing systems. High performance to develop an appropriate development and runtime environment for high performance computing platforms

  6. Enhancing BPEL Processes with Self-tuning Behavior Adina Mosincat

    E-Print Network [OSTI]

    Binder, Walter

    in a process at runtime, this feature results in coupling the dynamic binding with process business logic where web service performance fluctuates. Keywords-BPEL processes; self-tuning; dynamic service binding of such service-oriented systems. In a dynamic environment, such as the web, the ability of a process to adapt

  7. Developing Performance Models from Non-intrusive Monitoring Traces

    E-Print Network [OSTI]

    Murphy, John

    Developing Performance Models from Non- intrusive Monitoring Traces Daniela Mania, John Murphy transactions within the system at run-time using non-intrusive monitoring. Our belief is this methodology obtained by non-intrusive monitoring of an EJB-based e-commerce application. Moreover, the methodology

  8. Vancouver: A Software Stack for Productive Heterogeneous

    E-Print Network [OSTI]

    .S. Department of Energy Vetter_Vancouver_SC10 Vancouver overview · Large-scale heterogeneous system deployments #12;3 Managed by UT-Battelle for the U.S. Department of Energy Vetter_Vancouver_SC10 Language tools optimizations #12;4 Managed by UT-Battelle for the U.S. Department of Energy Vetter_Vancouver_SC10 Runtime data

  9. Submitted to: c S. Reiff-Marganiec

    E-Print Network [OSTI]

    Reiff-Marganiec, Stephan

    to jointly offer services which they cannot offer individually. On the IT side, Business Process Management management through policies has crystallized itself as a very prominent so- lution in system and network-user demands and ­ as part of STPOWLA ­ APPEL was used to adapt workflow instances at runtime. In this paper we

  10. ISSN0249-6399ISRNINRIA/RR--8192--FR+ENG Dcembre 2012

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    most today parallel High Performance Computing (HPC) software is written as highly tuned code taking mechanism. Key-words: High Performance Computing (HPC); GPU; Task; Runtime System; Conjugate Gradient. hal, the architectural complexity of High Performance Computing (HPC) plat- forms has strongly increased. To cope

  11. A Component-Based Approach for Constructing High-confidence Distributed Real-time and

    E-Print Network [OSTI]

    Tuceryan, Mihran

    the entire software life-cycle. 1 Introduction As the complexity of Distributed Real-Time Embedded (DRE development cost, but also facilitate high-confidence DRE system construction using different formalisms over implementations of the same functional component with different run-time features (e.g., battery consumption

  12. A Component-Based Approach for Constructing High-Confidence Distributed Real-Time and

    E-Print Network [OSTI]

    Gray, Jeffrey G.

    the entire software life-cycle. 1 Introduction As the complexity of Distributed Real-Time Embedded (DRE development cost, but also facilitate high-confidence DRE system construction using different formalisms over with different run-time features (e.g., battery consumption versus throughput). Addition- ally, two components

  13. Advanced Worker Protection System

    SciTech Connect (OSTI)

    NONE

    1996-04-01T23:59:59.000Z

    The Advanced Worker Protection System (AWPS) is a liquid-air-based, self-contained breathing and cooling system with a duration of 2 hrs. AWPS employs a patented system developed by Oceaneering Space Systems (OSS), and was demonstrated at their facility in Houston, TX as well as at Kansas State University, Manhattan. The heart of the system is the life-support backpack that uses liquid air to provide cooling as well as breathing gas to the worker. The backpack is combined with advanced protective garments, an advanced liquid cooling garment (LCG), a respirator, and communications and support equipment. The prototype unit development and testing under Phase 1 has demonstrated that AWPS has the ability to meet performance criteria. These criteria were developed with an understanding of both the AWPS capabilities and the DOE decontamination and decommissioning (D and D) activities protection needs.

  14. RSMASS system model development

    SciTech Connect (OSTI)

    Marshall, A.C.; Gallup, D.R.

    1998-07-01T23:59:59.000Z

    RSMASS system mass models have been used for more than a decade to make rapid estimates of space reactor power system masses. This paper reviews the evolution of the RSMASS models and summarizes present capabilities. RSMASS has evolved from a simple model used to make rough estimates of space reactor and shield masses to a versatile space reactor power system model. RSMASS uses unique reactor and shield models that permit rapid mass optimization calculations for a variety of space reactor power and propulsion systems. The RSMASS-D upgrade of the original model includes algorithms for the balance of the power system, a number of reactor and shield modeling improvements, and an automatic mass optimization scheme. The RSMASS-D suite of codes cover a very broad range of reactor and power conversion system options as well as propulsion and bimodal reactor systems. Reactor choices include in-core and ex-core thermionic reactors, liquid metal cooled reactors, particle bed reactors, and prismatic configuration reactors. Power conversion options include thermoelectric, thermionic, Stirling, Brayton, and Rankine approaches. Program output includes all major component masses and dimensions, efficiencies, and a description of the design parameters for a mass optimized system. In the past, RSMASS has been used as an aid to identify and select promising concepts for space power applications. The RSMASS modeling approach has been demonstrated to be a valuable tool for guiding optimization of the power system design; consequently, the model is useful during system design and development as well as during the selection process. An improved in-core thermionic reactor system model RSMASS-T is now under development. The current development of the RSMASS-T code represents the next evolutionary stage of the RSMASS models. RSMASS-T includes many modeling improvements and is planned to be more user-friendly. RSMASS-T will be released as a fully documented, certified code at the end of 1998. A radioisotope space power system model RISMASS is also under development. RISMASS will optimize and predict system masses for radioisotope power sources coupled with close-spaced thermionic diodes. Although RSMASS-D models have been developed for a broad variety of space nuclear power and propulsion systems, only a few concepts will be included in the releasable RSMASS-T computer code. A follow-on effort is recommended to incorporate all previous models as well as solar power system models into one general code. The proposed Space Power and propulsion system MASS (SPMASS) code would provide a consistent analysis tool for comparing a very broad range of alternative power and propulsion systems for any required power level and operating conditions. As for RSMASS-T the SPMASS model should be a certified, fully documented computer code available for general use. The proposed computer program would provide space mission planners with the capability to quickly and cost effectively explore power system options for any space mission. The code should be applicable for power requirements from as low as a few milliwatts (solar and isotopic system options) to many megawatts for reactor power and propulsion systems.

  15. Basic fluid system trainer

    DOE Patents [OSTI]

    Semans, Joseph P. (Uniontown, PA); Johnson, Peter G. (Pittsburgh, PA); LeBoeuf, Jr., Robert F. (Clairton, PA); Kromka, Joseph A. (Idaho Falls, ID); Goron, Ronald H. (Connellsville, PA); Hay, George D. (Venetia, PA)

    1993-01-01T23:59:59.000Z

    A trainer, mounted and housed within a mobile console, is used to teach and reinforce fluid principles to students. The system trainer has two centrifugal pumps, each driven by a corresponding two-speed electric motor. The motors are controlled by motor controllers for operating the pumps to circulate the fluid stored within a supply tank through a closed system. The pumps may be connected in series or in parallel. A number of valves are also included within the system to effect different flow paths for the fluid. In addition, temperature and pressure sensing instruments are installed throughout the closed system for measuring the characteristics of the fluid, as it passes through the different valves and pumps. These measurements are indicated on a front panel mounted to the console, as a teaching aid, to allow the students to observe the characteristics of the system.

  16. Basic fluid system trainer

    SciTech Connect (OSTI)

    Semans, J.P.; Johnson, P.G.; LeBoeuf, R.F. Jr.; Kromka, J.A.; Goron, R.H.; Hay, G.D.

    1991-04-30T23:59:59.000Z

    This invention, a trainer mounted and housed within a mobile console, is used to teach and reinforce fluid principles to students. The system trainer has two centrifugal pumps, each driven by a corresponding two-speed electric motor. The motors are controlled by motor controllers for operating the pumps to circulate the fluid stored within a supply tank through a closed system. The pumps may be connected in series or in parallel. A number of valves are also included within the system to effect different flow paths for the fluid. In addition, temperature and pressure sensing instruments are installed throughout the closed system for measuring the characteristics of the fluid, as it passes through the different valves and pumps. These measurements are indicated on a front panel mounted to the console, as a teaching aid, to allow the students to observe the characteristics of the system.

  17. Oil field management system

    DOE Patents [OSTI]

    Fincke, James R.

    2003-09-23T23:59:59.000Z

    Oil field management systems and methods for managing operation of one or more wells producing a high void fraction multiphase flow. The system includes a differential pressure flow meter which samples pressure readings at various points of interest throughout the system and uses pressure differentials derived from the pressure readings to determine gas and liquid phase mass flow rates of the high void fraction multiphase flow. One or both of the gas and liquid phase mass flow rates are then compared with predetermined criteria. In the event such mass flow rates satisfy the predetermined criteria, a well control system implements a correlating adjustment action respecting the multiphase flow. In this way, various parameters regarding the high void fraction multiphase flow are used as control inputs to the well control system and thus facilitate management of well operations.

  18. PDX diagnostic control system

    SciTech Connect (OSTI)

    Mika, R.

    1981-01-01T23:59:59.000Z

    This paper describes a computer-base diagnostic control system operating on the PDX Tokamak. The prime function of the system is to control mechanical positioning devices associated with various diagnostics including Thomson Scattering, X-Ray Pulse Height Analyzer, Rotating Scanning Monochromator, Fast Ion Detection Experiment, Bolometers and Plasma Limiters. The diagnostic control system consists of a PDP-11/34 computer, a CAMAC system partitioned between the PDX control room and the PDX machine area, and special electronic control modules developed at PPL. The special modules include a digital closed loop motor controller and user interface control panel for control and status display. A standard control panel was developed for interfacing each system user with the PDP-11/34 computer, through specially developed CAMAC modules.

  19. Data acquisition system

    DOE Patents [OSTI]

    Shapiro, Stephen L. (14228 Amherst Ct., Los Altos Hills, CA 94022); Mani, Sudhindra (1618 17th St., Sacramento, CA 95814); Atlas, Eugene L. (440 De Anza Ct., Oceanside, CA 92057); Cords, Dieter H. W. (526 Cuesta Real, La Honda, CA 94020); Holbrook, Britt (4540 Varsity Ct., Sacramento, CA 95841)

    1997-01-01T23:59:59.000Z

    A data acquisition circuit for a particle detection system that allows for time tagging of particles detected by the system. The particle detection system screens out background noise and discriminate between hits from scattered and unscattered particles. The detection system can also be adapted to detect a wide variety of particle types. The detection system utilizes a particle detection pixel array, each pixel containing a back-biased PIN diode, and a data acquisition pixel array. Each pixel in the particle detection pixel array is in electrical contact with a pixel in the data acquisition pixel array. In response to a particle hit, the affected PIN diodes generate a current, which is detected by the corresponding data acquisition pixels. This current is integrated to produce a voltage across a capacitor, the voltage being related to the amount of energy deposited in the pixel by the particle. The current is also used to trigger a read of the pixel hit by the particle.

  20. Electrochemical thermodynamic measurement system

    DOE Patents [OSTI]

    Reynier, Yvan (Meylan, FR); Yazami, Rachid (Los Angeles, CA); Fultz, Brent T. (Pasadena, CA)

    2009-09-29T23:59:59.000Z

    The present invention provides systems and methods for accurately characterizing thermodynamic and materials properties of electrodes and electrochemical energy storage and conversion systems. Systems and methods of the present invention are configured for simultaneously collecting a suite of measurements characterizing a plurality of interconnected electrochemical and thermodynamic parameters relating to the electrode reaction state of advancement, voltage and temperature. Enhanced sensitivity provided by the present methods and systems combined with measurement conditions that reflect thermodynamically stabilized electrode conditions allow very accurate measurement of thermodynamic parameters, including state functions such as the Gibbs free energy, enthalpy and entropy of electrode/electrochemical cell reactions, that enable prediction of important performance attributes of electrode materials and electrochemical systems, such as the energy, power density, current rate and the cycle life of an electrochemical cell.

  1. System for controlling a hybrid energy system

    DOE Patents [OSTI]

    Hoff, Brian D.; Akasam, Sivaprasad

    2013-01-29T23:59:59.000Z

    A method includes identifying a first operating sequence of a repeated operation of at least one non-traction load. The method also includes determining first and second parameters respectively indicative of a requested energy and output energy of the at least one non-traction load and comparing the determined first and second parameters at a plurality of time increments of the first operating sequence. The method also includes determining a third parameter of the hybrid energy system indicative of energy regenerated from the at least one non-traction load and monitoring the third parameter at the plurality of time increments of the first operating sequence. The method also includes determining at least one of an energy deficiency or an energy surplus associated with the non-traction load of the hybrid energy system and selectively adjusting energy stored within the storage device during at least a portion of a second operating sequence.

  2. SOFTWARE QUALITY & SYSTEMS ENGINEERING PROGRAM | Department of...

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

    SOFTWARE QUALITY & SYSTEMS ENGINEERING PROGRAM SOFTWARE QUALITY & SYSTEMS ENGINEERING PROGRAM System Maintenance Checklist SOFTWARE QUALITY & SYSTEMS ENGINEERING PROGRAM More...

  3. Human-system Interfaces for Automatic Systems

    SciTech Connect (OSTI)

    OHara, J.M.; Higgins,J. (BNL); Fleger, S.; Barnes V. (NRC)

    2010-11-07T23:59:59.000Z

    Automation is ubiquitous in modern complex systems, and commercial nuclear- power plants are no exception. Automation is applied to a wide range of functions including monitoring and detection, situation assessment, response planning, and response implementation. Automation has become a 'team player' supporting personnel in nearly all aspects of system operation. In light of its increasing use and importance in new- and future-plants, guidance is needed to conduct safety reviews of the operator's interface with automation. The objective of this research was to develop such guidance. We first characterized the important HFE aspects of automation, including six dimensions: levels, functions, processes, modes, flexibility, and reliability. Next, we reviewed literature on the effects of all of these aspects of automation on human performance, and on the design of human-system interfaces (HSIs). Then, we used this technical basis established from the literature to identify general principles for human-automation interaction and to develop review guidelines. The guidelines consist of the following seven topics: automation displays, interaction and control, automation modes, automation levels, adaptive automation, error tolerance and failure management, and HSI integration. In addition, our study identified several topics for additional research.

  4. Common Control System Vulnerability

    SciTech Connect (OSTI)

    Trent Nelson

    2005-12-01T23:59:59.000Z

    The Control Systems Security Program and other programs within the Idaho National Laboratory have discovered a vulnerability common to control systems in all sectors that allows an attacker to penetrate most control systems, spoof the operator, and gain full control of targeted system elements. This vulnerability has been identified on several systems that have been evaluated at INL, and in each case a 100% success rate of completing the attack paths that lead to full system compromise was observed. Since these systems are employed in multiple critical infrastructure sectors, this vulnerability is deemed common to control systems in all sectors. Modern control systems architectures can be considered analogous to today's information networks, and as such are usually approached by attackers using a common attack methodology to penetrate deeper and deeper into the network. This approach often is composed of several phases, including gaining access to the control network, reconnaissance, profiling of vulnerabilities, launching attacks, escalating privilege, maintaining access, and obscuring or removing information that indicates that an intruder was on the system. With irrefutable proof that an external attack can lead to a compromise of a computing resource on the organization's business local area network (LAN), access to the control network is usually considered the first phase in the attack plan. Once the attacker gains access to the control network through direct connections and/or the business LAN, the second phase of reconnaissance begins with traffic analysis within the control domain. Thus, the communications between the workstations and the field device controllers can be monitored and evaluated, allowing an attacker to capture, analyze, and evaluate the commands sent among the control equipment. Through manipulation of the communication protocols of control systems (a process generally referred to as ''reverse engineering''), an attacker can then map out the control system processes and functions. With the detailed knowledge of how the control data functions, as well as what computers and devices communicate using this data, the attacker can use a well known Man-in-the-Middle attack to perform malicious operations virtually undetected. The control systems assessment teams have used this method to gather enough information about the system to craft an attack that intercepts and changes the information flow between the end devices (controllers) and the human machine interface (HMI and/or workstation). Using this attack, the cyber assessment team has been able to demonstrate complete manipulation of devices in control systems while simultaneously modifying the data flowing back to the operator's console to give false information of the state of the system (known as ''spoofing''). This is a very effective technique for a control system attack because it allows the attacker to manipulate the system and the operator's situational awareness of the perceived system status. The three main elements of this attack technique are: (1) network reconnaissance and data gathering, (2) reverse engineering, and (3) the Man-in-the-Middle attack. The details of this attack technique and the mitigation techniques are discussed.

  5. Coal systems analysis

    SciTech Connect (OSTI)

    Warwick, P.D. (ed.)

    2005-07-01T23:59:59.000Z

    This collection of papers provides an introduction to the concept of coal systems analysis and contains examples of how coal systems analysis can be used to understand, characterize, and evaluate coal and coal gas resources. Chapter are: Coal systems analysis: A new approach to the understanding of coal formation, coal quality and environmental considerations, and coal as a source rock for hydrocarbons by Peter D. Warwick. Appalachian coal assessment: Defining the coal systems of the Appalachian Basin by Robert C. Milici. Subtle structural influences on coal thickness and distribution: Examples from the Lower Broas-Stockton coal (Middle Pennsylvanian), Eastern Kentucky Coal Field, USA by Stephen F. Greb, Cortland F. Eble, and J.C. Hower. Palynology in coal systems analysis The key to floras, climate, and stratigraphy of coal-forming environments by Douglas J. Nichols. A comparison of late Paleocene and late Eocene lignite depositional systems using palynology, upper Wilcox and upper Jackson Groups, east-central Texas by Jennifer M.K. O'Keefe, Recep H. Sancay, Anne L. Raymond, and Thomas E. Yancey. New insights on the hydrocarbon system of the Fruitland Formation coal beds, northern San Juan Basin, Colorado and New Mexico, USA by W.C. Riese, William L. Pelzmann, and Glen T. Snyder.

  6. Control system design guide

    SciTech Connect (OSTI)

    Sellers, David; Friedman, Hannah; Haasl, Tudi; Bourassa, Norman; Piette, Mary Ann

    2003-05-01T23:59:59.000Z

    The ''Control System Design Guide'' (Design Guide) provides methods and recommendations for the control system design process and control point selection and installation. Control systems are often the most problematic system in a building. A good design process that takes into account maintenance, operation, and commissioning can lead to a smoothly operating and efficient building. To this end, the Design Guide provides a toolbox of templates for improving control system design and specification. HVAC designers are the primary audience for the Design Guide. The control design process it presents will help produce well-designed control systems that achieve efficient and robust operation. The spreadsheet examples for control valve schedules, damper schedules, and points lists can streamline the use of the control system design concepts set forth in the Design Guide by providing convenient starting points from which designers can build. Although each reader brings their own unique questions to the text, the Design Guide contains information that designers, commissioning providers, operators, and owners will find useful.

  7. Medical imaging systems

    DOE Patents [OSTI]

    Frangioni, John V. (Wayland, MA)

    2012-07-24T23:59:59.000Z

    A medical imaging system provides simultaneous rendering of visible light and fluorescent images. The system may employ dyes in a small-molecule form that remains in a subject's blood stream for several minutes, allowing real-time imaging of the subject's circulatory system superimposed upon a conventional, visible light image of the subject. The system may also employ dyes or other fluorescent substances associated with antibodies, antibody fragments, or ligands that accumulate within a region of diagnostic significance. In one embodiment, the system provides an excitation light source to excite the fluorescent substance and a visible light source for general illumination within the same optical guide that is used to capture images. In another embodiment, the system is configured for use in open surgical procedures by providing an operating area that is closed to ambient light. More broadly, the systems described herein may be used in imaging applications where a visible light image may be usefully supplemented by an image formed from fluorescent emissions from a fluorescent substance that marks areas of functional interest.

  8. Using the DiaSpec design language and compiler to develop robotics systems

    E-Print Network [OSTI]

    Cassou, Damien; Koch, Pierrick

    2011-01-01T23:59:59.000Z

    A Sense/Compute/Control (SCC) application is one that interacts with the physical environment. Such applications are pervasive in domains such as building automation, assisted living, and autonomic computing. Developing an SCC application is complex because: (1) the implementation must address both the interaction with the environment and the application logic; (2) any evolution in the environment must be reflected in the implementation of the application; (3) correctness is essential, as effects on the physical environment can have irreversible consequences. The SCC architectural pattern and the DiaSpec domain-specific design language propose a framework to guide the design of such applications. From a design description in DiaSpec, the DiaSpec compiler is capable of generating a programming framework that guides the developer in implementing the design and that provides runtime support. In this paper, we report on an experiment using DiaSpec (both the design language and compiler) to develop a standard robo...

  9. Next generation information systems

    SciTech Connect (OSTI)

    Limback, Nathan P [Los Alamos National Laboratory; Medina, Melanie A [Los Alamos National Laboratory; Silva, Michelle E [Los Alamos National Laboratory

    2010-01-01T23:59:59.000Z

    The Information Systems Analysis and Development (ISAD) Team of the Safeguards Systems Group at Los Alamos National Laboratory (LANL) has been developing web based information and knowledge management systems for sixteen years. Our vision is to rapidly and cost effectively provide knowledge management solutions in the form of interactive information systems that help customers organize, archive, post and retrieve nonproliferation and safeguards knowledge and information vital to their success. The team has developed several comprehensive information systems that assist users in the betterment and growth of their organizations and programs. Through our information systems, users are able to streamline operations, increase productivity, and share and access information from diverse geographic locations. The ISAD team is also producing interactive visual models. Interactive visual models provide many benefits to customers beyond the scope of traditional full-scale modeling. We have the ability to simulate a vision that a customer may propose, without the time constraints of traditional engineering modeling tools. Our interactive visual models can be used to access specialized training areas, controlled areas, and highly radioactive areas, as well as review site-specific training for complex facilities, and asset management. Like the information systems that the ISAD team develops, these models can be shared and accessed from any location with access to the internet. The purpose of this paper is to elaborate on the capabilities of information systems and interactive visual models as well as consider the possibility of combining the two capabilities to provide the next generation of infonnation systems. The collection, processing, and integration of data in new ways can contribute to the security of the nation by providing indicators and information for timely action to decrease the traditional and new nuclear threats. Modeling and simulation tied to comprehensive databases are progressions of the tools that can be used in new ways and further developed to enhance the mission of nonproliferation and threat reduction.

  10. Control and optimization system

    DOE Patents [OSTI]

    Xinsheng, Lou

    2013-02-12T23:59:59.000Z

    A system for optimizing a power plant includes a chemical loop having an input for receiving an input parameter (270) and an output for outputting an output parameter (280), a control system operably connected to the chemical loop and having a multiple controller part (230) comprising a model-free controller. The control system receives the output parameter (280), optimizes the input parameter (270) based on the received output parameter (280), and outputs an optimized input parameter (270) to the input of the chemical loop to control a process of the chemical loop in an optimized manner.

  11. Photovoltaic system reliability

    SciTech Connect (OSTI)

    Maish, A.B.; Atcitty, C. [Sandia National Labs., NM (United States); Greenberg, D. [Ascension Technology, Inc., Lincoln Center, MA (United States)] [and others

    1997-10-01T23:59:59.000Z

    This paper discusses the reliability of several photovoltaic projects including SMUD`s PV Pioneer project, various projects monitored by Ascension Technology, and the Colorado Parks project. System times-to-failure range from 1 to 16 years, and maintenance costs range from 1 to 16 cents per kilowatt-hour. Factors contributing to the reliability of these systems are discussed, and practices are recommended that can be applied to future projects. This paper also discusses the methodology used to collect and analyze PV system reliability data.

  12. Power management system

    DOE Patents [OSTI]

    Algrain, Marcelo C. (Peoria, IL); Johnson, Kris W. (Washington, IL); Akasam, Sivaprasad (Peoria, IL); Hoff, Brian D. (East Peoria, IL)

    2007-10-02T23:59:59.000Z

    A method of managing power resources for an electrical system of a vehicle may include identifying enabled power sources from among a plurality of power sources in electrical communication with the electrical system and calculating a threshold power value for the enabled power sources. A total power load placed on the electrical system by one or more power consumers may be measured. If the total power load exceeds the threshold power value, then a determination may be made as to whether one or more additional power sources is available from among the plurality of power sources. At least one of the one or more additional power sources may be enabled, if available.

  13. Automatic bagout system

    SciTech Connect (OSTI)

    Whitaker, R.M.

    1986-11-01T23:59:59.000Z

    Nuclear material entrained wastes are generated at the Plutonium Facility at Los Alamos National Laboratory. These wastes are removed from the glove box lines using the bagout method. This is a manual operation performed by technicians. An automated system is being developed to relieve the technicians from this task. The system will reduce the amount of accumulated radiation exposure to the worker. The primary components of the system consist of a six degree of freedom robot, a bag sealing device, and a small gantry robot. 1 ref., 5 figs.

  14. Tokamak Systems Code

    SciTech Connect (OSTI)

    Reid, R.L.; Barrett, R.J.; Brown, T.G.; Gorker, G.E.; Hooper, R.J.; Kalsi, S.S.; Metzler, D.H.; Peng, Y.K.M.; Roth, K.E.; Spampinato, P.T.

    1985-03-01T23:59:59.000Z

    The FEDC Tokamak Systems Code calculates tokamak performance, cost, and configuration as a function of plasma engineering parameters. This version of the code models experimental tokamaks. It does not currently consider tokamak configurations that generate electrical power or incorporate breeding blankets. The code has a modular (or subroutine) structure to allow independent modeling for each major tokamak component or system. A primary benefit of modularization is that a component module may be updated without disturbing the remainder of the systems code as long as the imput to or output from the module remains unchanged.

  15. Downhole telemetry system

    DOE Patents [OSTI]

    Normann, R.A.; Kadlec, E.R.

    1994-11-08T23:59:59.000Z

    A downhole telemetry system is described for optically communicating to the surface operating parameters of a drill bit during ongoing drilling operations. The downhole telemetry system includes sensors mounted with a drill bit for monitoring at least one operating parameter of the drill bit and generating a signal representative thereof. The downhole telemetry system includes means for transforming and optically communicating the signal to the surface as well as means at the surface for producing a visual display of the optically communicated operating parameters of the drill bit. 7 figs.

  16. Downhole telemetry system

    DOE Patents [OSTI]

    Normann, Randy A. (Albuquerque, NM); Kadlec, Emil R. (Albuquerque, NM)

    1994-01-01T23:59:59.000Z

    A downhole telemetry system is described for optically communicating to the surface operating parameters of a drill bit during ongoing drilling operations. The downhole telemetry system includes sensors mounted with a drill bit for monitoring at least one operating parameter of the drill bit and generating a signal representative thereof. The downhole telemetry system includes means for transforming and optically communicating the signal to the surface as well as means at the surface for producing a visual display of the optically communicated operating parameters of the drill bit.

  17. Computerized procedures system

    SciTech Connect (OSTI)

    Lipner, Melvin H. (Monroeville, PA); Mundy, Roger A. (North Huntingdon, PA); Franusich, Michael D. (Upper St. Clair, PA)

    2010-10-12T23:59:59.000Z

    An online data driven computerized procedures system that guides an operator through a complex process facility's operating procedures. The system monitors plant data, processes the data and then, based upon this processing, presents the status of the current procedure step and/or substep to the operator. The system supports multiple users and a single procedure definition supports several interface formats that can be tailored to the individual user. Layered security controls access privileges and revisions are version controlled. The procedures run on a server that is platform independent of the user workstations that the server interfaces with and the user interface supports diverse procedural views.

  18. Cyberspace security system

    DOE Patents [OSTI]

    Abercrombie, Robert K; Sheldon, Frederick T; Ferragut, Erik M

    2014-06-24T23:59:59.000Z

    A system evaluates reliability, performance and/or safety by automatically assessing the targeted system's requirements. A cost metric quantifies the impact of failures as a function of failure cost per unit of time. The metrics or measurements may render real-time (or near real-time) outcomes by initiating active response against one or more high ranked threats. The system may support or may be executed in many domains including physical domains, cyber security domains, cyber-physical domains, infrastructure domains, etc. or any other domains that are subject to a threat or a loss.

  19. Absorption heat pump system

    DOE Patents [OSTI]

    Grossman, Gershon (Oak Ridge, TN); Perez-Blanco, Horacio (Knoxville, TN)

    1984-01-01T23:59:59.000Z

    An improvement in an absorption heat pump cycle is obtained by adding adiabatic absorption and desorption steps to the absorber and desorber of the system. The adiabatic processes make it possible to obtain the highest temperature in the absorber before any heat is removed from it and the lowest temperature in the desorber before heat is added to it, allowing for efficient utilization of the thermodynamic availability of the heat supply stream. The improved system can operate with a larger difference between high and low working fluid concentrations, less circulation losses, and more efficient heat exchange than a conventional system.

  20. Nuclear medicine imaging system

    DOE Patents [OSTI]

    Bennett, G.W.; Brill, A.B.; Bizais, Y.J.C.; Rowe, R.W.; Zubal, I.G.

    1983-03-11T23:59:59.000Z

    It is an object of this invention to provide a nuclear imaging system having the versatility to do positron annihilation studies, rotating single or opposed camera gamma emission studies, and orthogonal gamma emission studies. It is a further object of this invention to provide an imaging system having the capability for orthogonal dual multipinhole tomography. It is another object of this invention to provide a nuclear imaging system in which all available energy data, as well as patient physiological data, are acquired simultaneously in list mode.

  1. Distributed Optimization System

    DOE Patents [OSTI]

    Hurtado, John E. (Albuquerque, NM); Dohrmann, Clark R. (Albuquerque, NM); Robinett, III, Rush D. (Tijeras, NM)

    2004-11-30T23:59:59.000Z

    A search system and method for controlling multiple agents to optimize an objective using distributed sensing and cooperative control. The search agent can be one or more physical agents, such as a robot, and can be software agents for searching cyberspace. The objective can be: chemical sources, temperature sources, radiation sources, light sources, evaders, trespassers, explosive sources, time dependent sources, time independent sources, function surfaces, maximization points, minimization points, and optimal control of a system such as a communication system, an economy, a crane, and a multi-processor computer.

  2. Waste receiving and processing plant control system; system design description

    SciTech Connect (OSTI)

    LANE, M.P.

    1999-02-24T23:59:59.000Z

    The Plant Control System (PCS) is a heterogeneous computer system composed of numerous sub-systems. The PCS represents every major computer system that is used to support operation of the Waste Receiving and Processing (WRAP) facility. This document, the System Design Description (PCS SDD), includes several chapters and appendices. Each chapter is devoted to a separate PCS sub-system. Typically, each chapter includes an overview description of the system, a list of associated documents related to operation of that system, and a detailed description of relevant system features. Each appendice provides configuration information for selected PCS sub-systems. The appendices are designed as separate sections to assist in maintaining this document due to frequent changes in system configurations. This document is intended to serve as the primary reference for configuration of PCS computer systems. The use of this document is further described in the WRAP System Configuration Management Plan, WMH-350, Section 4.1.

  3. Collaborative Systems Thinking: Understanding of team-level systems thinking

    E-Print Network [OSTI]

    de Weck, Olivier L.

    , Systems Practice, Soft Systems Methodology: A 30-year retrospective. John Wiley and Sons, West SussexCollaborative Systems Thinking: Understanding of team-level systems thinking Caroline Twomey Lamb and Astronautics, 2005 · Research Interests ­ Propulsion ­ Systems engineering ­ Social enablers of good technical

  4. Systems Engineering Research in the Engineering Systems Context

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Systems Engineering Research in the Engineering Systems Context: Value-Driven Architecting and Design of Engineering Systems Presented by: Dr. Donna H. Rhodes and Dr. Adam M. Ross Massachusetts Topics PART I. Systems Engineering Research in the Engineering Systems Context · Brief Overview

  5. INDUSTRIAL&SYSTEMS Industrial and Systems engineers use

    E-Print Network [OSTI]

    Rohs, Remo

    78 INDUSTRIAL&SYSTEMS Industrial and Systems engineers use engineering and business principles companies compete in today's global marketplace. The Industrial and Systems engineer's task is to take · Industrial and Systems Engineering Bachelor of Science 128 units · Industrial and Systems Engineering

  6. Resilient engineered systems: the development of an inherent system property

    E-Print Network [OSTI]

    Mitchell, Susan McAlpin

    2007-09-17T23:59:59.000Z

    was defined as the amount of energy a system can store before reaching a point of instability. The energy input into each system as well as the system�s exergy were used to develop system stress and system strain variables. Process variable changes...

  7. Student Representation System Policy Student Representation System Policy

    E-Print Network [OSTI]

    Birmingham, University of

    Policy Student Representation System Policy 2013-14 Student Representation System Policy UNIVERSITY OF BIRMINGHAM STUDENT REPRESENTATION SYSTEM POLICY #12;Policy Student Representation System Policy 2013-14 Student Representation System Policy Index of points 1. Introduction 2. Purpose 3. Core Principles 4

  8. Systems, Advisory Systems and Safety Carles Sala Oliveras

    E-Print Network [OSTI]

    Newcastle upon Tyne, University of

    Systems, Advisory Systems and Safety Carles Sala Oliveras Abstract Increasing the automation level of systems has led to more attention being paid to human control roles and the dependability of systems that comprise operators and machines. When humans build mental models of complex automated systems, they can

  9. Earth System History Announcements

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    Earth System History GEOL 1020 [35] Announcements The demise of the Paleozoic (extinction, Nova Scotia. #12;The Carboniferous was marked by the progressive formation of the supercontinent Pangea, there is evidence of significant cooling and drying in the sedimentologi

  10. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    2: dual bed colloidal suspension Type 3: fixed flat panel2: dual bed colloidal suspension Type 3: fixed flat panelBed Colloidal Suspension…………….37 Figure 1.18: Type 3 PEC System Reactor, Fixed

  11. Variable buoyancy system metric

    E-Print Network [OSTI]

    Jensen, Harold Franklin

    2009-01-01T23:59:59.000Z

    Over the past 20 years, underwater vehicle technology has undergone drastic improvements, and vehicles are quickly gaining popularity as a tool for numerous oceanographic tasks. Systems used on the vehicle to alter buoyancy, ...

  12. Wind Energy Systems Exemption

    Broader source: Energy.gov [DOE]

    Tennessee House Bill 809, enacted into law in Public Chapter 377, Acts of 2003 and codified under Title 67, Chapter 5, states that wind energy systems operated by public utilities, businesses or...

  13. Focused ion beam system

    DOE Patents [OSTI]

    Leung, K.; Gough, R.A.; Ji, Q.; Lee, Y.Y.

    1999-08-31T23:59:59.000Z

    A focused ion beam (FIB) system produces a final beam spot size down to 0.1 {mu}m or less and an ion beam output current on the order of microamps. The FIB system increases ion source brightness by properly configuring the first (plasma) and second (extraction) electrodes. The first electrode is configured to have a high aperture diameter to electrode thickness aspect ratio. Additional accelerator and focusing electrodes are used to produce the final beam. As few as five electrodes can be used, providing a very compact FIB system with a length down to only 20 mm. Multibeamlet arrangements with a single ion source can be produced to increase throughput. The FIB system can be used for nanolithography and doping applications for fabrication of semiconductor devices with minimum feature sizes of 0.1 m or less. 13 figs.

  14. SASSI system software configuration

    SciTech Connect (OSTI)

    Weiner, E.O.

    1994-08-01T23:59:59.000Z

    The SASSI (System for Analysis for Soil-Structure Interaction) computer program was obtained by WHC from the University of California at Berkeley for seismic structural analysis of complex embedded building configurations. SASSI was developed in the 1980`s by a team of doctoral students under the direction of Prof. J. Lysmer. The program treats three-dimensional soil-structure interaction problems with the flexible volume substructuring method. In the 1970`s, the same organization developed the FLUSH program, which has achieved widespread international usage in the seismic analysis of structures. SASSI consists of nine modules, each of which are to be run as a separate execution. The SASSI source code, dated 1989 and identified as a Cray version, was put up on the RL Cray XM/232 Unicos system in 1991. That system was removed at the end of 1993, and SASSI is now installed on the LANL Cray YMP systems.

  15. Secondary fuel delivery system

    DOE Patents [OSTI]

    Parker, David M. (Oviedo, FL); Cai, Weidong (Oviedo, FL); Garan, Daniel W. (Orlando, FL); Harris, Arthur J. (Orlando, FL)

    2010-02-23T23:59:59.000Z

    A secondary fuel delivery system for delivering a secondary stream of fuel and/or diluent to a secondary combustion zone located in the transition piece of a combustion engine, downstream of the engine primary combustion region is disclosed. The system includes a manifold formed integral to, and surrounding a portion of, the transition piece, a manifold inlet port, and a collection of injection nozzles. A flowsleeve augments fuel/diluent flow velocity and improves the system cooling effectiveness. Passive cooling elements, including effusion cooling holes located within the transition boundary and thermal-stress-dissipating gaps that resist thermal stress accumulation, provide supplemental heat dissipation in key areas. The system delivers a secondary fuel/diluent mixture to a secondary combustion zone located along the length of the transition piece, while reducing the impact of elevated vibration levels found within the transition piece and avoiding the heat dissipation difficulties often associated with traditional vibration reduction methods.

  16. Tandem mobile robot system

    DOE Patents [OSTI]

    Buttz, James H. (Albuquerque, NM); Shirey, David L. (Albuquerque, NM); Hayward, David R. (Albuquerque, NM)

    2003-01-01T23:59:59.000Z

    A robotic vehicle system for terrain navigation mobility provides a way to climb stairs, cross crevices, and navigate across difficult terrain by coupling two or more mobile robots with a coupling device and controlling the robots cooperatively in tandem.

  17. Idaho Explosive Detection System

    ScienceCinema (OSTI)

    Klinger, Jeff

    2013-05-28T23:59:59.000Z

    Learn how INL researchers are making the world safer by developing an explosives detection system that can inspect cargo. For more information about INL security research, visit http://www.facebook.com/idahonationallaboratory

  18. Modular tokamak magnetic system

    DOE Patents [OSTI]

    Yang, Tien-Fang (Wayland, MA)

    1988-01-01T23:59:59.000Z

    A modular tokamak system comprised of a plurality of interlocking moldules. Each module is comprised of a vacuum vessel section, a toroidal field coil, moldular saddle coils which generate a poloidal magnetic field and ohmic heating coils.

  19. Freeze resistant buoy system

    DOE Patents [OSTI]

    Hill, David E [Knoxville, TN; Greenbaum, Elias [Knoxville, TN

    2007-08-21T23:59:59.000Z

    A freeze resistant buoy system includes a tail-tube buoy having a thermally insulated section disposed predominantly above a waterline, and a thermo-siphon disposed predominantly below the waterline.

  20. Guardians for Concurrent Systems

    E-Print Network [OSTI]

    Hewitt, Carl

    In this paper we survey the current state of the art on fundamental aspects of concurrent systems. We discuss the notion of concurrency and discuss a model of computation which unifies the lambda calculus model and the ...

  1. Nanomechanical testing system

    DOE Patents [OSTI]

    Vodnick, David James; Dwivedi, Arpit; Keranen, Lucas Paul; Okerlund, Michael David; Schmitz, Roger William; Warren, Oden Lee; Young, Christopher David

    2014-07-08T23:59:59.000Z

    An automated testing system includes systems and methods to facilitate inline production testing of samples at a micro (multiple microns) or less scale with a mechanical testing instrument. In an example, the system includes a probe changing assembly for coupling and decoupling a probe of the instrument. The probe changing assembly includes a probe change unit configured to grasp one of a plurality of probes in a probe magazine and couple one of the probes with an instrument probe receptacle. An actuator is coupled with the probe change unit, and the actuator is configured to move and align the probe change unit with the probe magazine and the instrument probe receptacle. In another example, the automated testing system includes a multiple degree of freedom stage for aligning a sample testing location with the instrument. The stage includes a sample stage and a stage actuator assembly including translational and rotational actuators.

  2. Data driven health system

    E-Print Network [OSTI]

    Rosen Ceruolo, Melissa Beth

    2013-01-01T23:59:59.000Z

    Effective use of data is believed to be the key to address systemic inefficiencies in health innovation and delivery, and to significantly enhance value creation for patients and all stakeholders. However, there is no ...

  3. Pupillary efficient lighting system

    DOE Patents [OSTI]

    Berman, Samuel M. (San Francisco, CA); Jewett, Don L. (Mill Valley, CA)

    1991-01-01T23:59:59.000Z

    A lighting system having at least two independent lighting subsystems each with a different ratio of scotopic illumination to photopic illumination. The radiant energy in the visible region of the spectrum of the lighting subsystems can be adjusted relative to each other so that the total scotopic illumination of the combined system and the total photopic illumination of the combined system can be varied independently. The dilation or contraction of the pupil of an eye is controlled by the level of scotopic illumination and because the scotopic and photopic illumination can be separately controlled, the system allows the pupil size to be varied independently of the level of photopic illumination. Hence, the vision process can be improved for a given level of photopic illumination.

  4. Thermal Insulation Systems

    E-Print Network [OSTI]

    Stanley, T. F.

    1982-01-01T23:59:59.000Z

    Thermal insulation systems are receiving a high degree of attention in view of increasing energy cost. Industrial, commercial and residential energy users are all well aware of energy cost increases and great emphasis is being directed to energy...

  5. Advanced synchronous luminescence system

    DOE Patents [OSTI]

    Vo-Dinh, Tuan (Knoxville, TN)

    1997-01-01T23:59:59.000Z

    A method and apparatus for determining the condition of tissue or otherwise making chemical identifications includes exposing the sample to a light source, and using a synchronous luminescence system to produce a spectrum that can be analyzed for tissue condition.

  6. Solar heating system

    DOE Patents [OSTI]

    Schreyer, James M. (Oak Ridge, TN); Dorsey, George F. (Concord, TN)

    1982-01-01T23:59:59.000Z

    An improved solar heating system in which the incident radiation of the sun is absorbed on collector panels, transferred to a storage unit and then distributed as heat for a building and the like. The improvement is obtained by utilizing a storage unit comprising separate compartments containing an array of materials having different melting points ranging from 75.degree. to 180.degree. F. The materials in the storage system are melted in accordance with the amount of heat absorbed from the sun and then transferred to the storage system. An efficient low volume storage system is provided by utilizing the latent heat of fusion of the materials as they change states in storing and releasing heat for distribution.

  7. Power Systems Development Facility

    SciTech Connect (OSTI)

    Southern Company Services

    2009-01-31T23:59:59.000Z

    In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF), located in Wilsonville, Alabama, has routinely demonstrated gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This final report summarizes the results of the technology development work conducted at the PSDF through January 31, 2009. Twenty-one major gasification test campaigns were completed, for a total of more than 11,000 hours of gasification operation. This operational experience has led to significant advancements in gasification technologies.

  8. SOLAR PROGRAM: SYSTEMS INTEGRATION

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

    2010 2. Current Request for Information (RFI) 3. Questions 4 | Systems Integration eere.energy.gov Summary of 1W Workshop Date: August 11th and 12th, 2010 Attendees: 86 total;...

  9. Cooling Water System Optimization

    E-Print Network [OSTI]

    Aegerter, R.

    2005-01-01T23:59:59.000Z

    During summer months, many manufacturing plants have to cut back in rates because the cooling water system is not providing sufficient cooling to support higher production rates. There are many low/no-cost techniques available to improve tower...

  10. Computerized Maintenance Management Systems

    Broader source: Energy.gov [DOE]

    Computerized maintenance management systems (CMMS) are a type of management software that perform functions in support of operations and maintenance (O&M) programs. The software automates most of the logistical functions performed by O&M staff.

  11. Solar Energy System Exemption

    Broader source: Energy.gov [DOE]

    A solar energy system is defined as "any device that uses the heat of the sun as its primary energy source and is used to heat or cool the interior of a structure or swimming pool, or to heat...

  12. Guidance Systems Division ,

    Office of Legacy Management (LM)

    Oockec No. 10-0772 22 OCT 1981 Bcndlx CorporaLion ' Guidance Systems Division , ATTN: Mr. Wf 11 la,,, Hnrr,,or Manngar, PlanL Englne0rtny Teterboro, New Jersey 07608 uwm STATES...

  13. Solar system fault detection

    DOE Patents [OSTI]

    Farrington, R.B.; Pruett, J.C. Jr.

    1984-05-14T23:59:59.000Z

    A fault detecting apparatus and method are provided for use with an active solar system. The apparatus provides an indication as to whether one or more predetermined faults have occurred in the solar system. The apparatus includes a plurality of sensors, each sensor being used in determining whether a predetermined condition is present. The outputs of the sensors are combined in a pre-established manner in accordance with the kind of predetermined faults to be detected. Indicators communicate with the outputs generated by combining the sensor outputs to give the user of the solar system and the apparatus an indication as to whether a predetermined fault has occurred. Upon detection and indication of any predetermined fault, the user can take appropriate corrective action so that the overall reliability and efficiency of the active solar system are increased.

  14. Cogeneration System Design Options

    E-Print Network [OSTI]

    Gilbert, J. S.

    The commercial or industrial firm contemplating cogeneration at its facilities faces numerous basic design choices. The possibilities exist for fueling the system with waste materials, gas, oil, coal, or other combustibles. The choice of boiler...

  15. Computer memory management system

    DOE Patents [OSTI]

    Kirk, III, Whitson John (Greenwood, MO)

    2002-01-01T23:59:59.000Z

    A computer memory management system utilizing a memory structure system of "intelligent" pointers in which information related to the use status of the memory structure is designed into the pointer. Through this pointer system, The present invention provides essentially automatic memory management (often referred to as garbage collection) by allowing relationships between objects to have definite memory management behavior by use of coding protocol which describes when relationships should be maintained and when the relationships should be broken. In one aspect, the present invention system allows automatic breaking of strong links to facilitate object garbage collection, coupled with relationship adjectives which define deletion of associated objects. In another aspect, The present invention includes simple-to-use infinite undo/redo functionality in that it has the capability, through a simple function call, to undo all of the changes made to a data model since the previous `valid state` was noted.

  16. Systems building in architecture

    E-Print Network [OSTI]

    Tzannetakis, Charilaos Panayotis

    1983-01-01T23:59:59.000Z

    This work is an inquiry into the interventions of the systems design in the whole building process. At the beginning, three approaches which represent different points of view of interventions in production and use are ...

  17. Maintain Combustion Systems

    E-Print Network [OSTI]

    Fletcher, R. J.

    1979-01-01T23:59:59.000Z

    Energy is consumed, and wasted, in liberal amounts in the combustion processes which supply heat energy to boilers and process heaters. Close attention to combustion systems can be extremely beneficial: Optimum air to fuel ratios, i.e., maintaining...

  18. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    of the electrical power output to the solar power input), aSolar Energy Calculator using Google Maps 23 Table 1.24: PV System Power Production Average Daily Irradiance (kWh/m2) Instillation Efficiency Labeled Efficiency Output

  19. AN EMBEDDED SYSTEMS KERNEL

    E-Print Network [OSTI]

    . . . . . . . . . . . . . . . . . . . 13 4.5 MIPS Malta development board . . . . . . . . . . . . . . . 14 4.6 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5 Hardware 17 5.1 The Malta system . . . . . . . . . . . . . . . . . . . . . . . 17 5.1.1 The Core

  20. Improved solar heating systems

    DOE Patents [OSTI]

    Schreyer, J.M.; Dorsey, G.F.

    1980-05-16T23:59:59.000Z

    An improved solar heating system is described in which the incident radiation of the sun is absorbed on collector panels, transferred to a storage unit and then distributed as heat for a building and the like. The improvement is obtained by utilizing a storage unit comprising separate compartments containing an array of materials having different melting points ranging from 75 to 180/sup 0/F. The materials in the storage system are melted in accordance with the amount of heat absorbed from the sun and then transferred to the storage system. An efficient low volume storage system is provided by utilizing the latent heat of fusion of the materials as they change states in storing ad releasing heat for distribution.

  1. Interior intrusion detection systems

    SciTech Connect (OSTI)

    Rodriguez, J.R.; Matter, J.C. (Sandia National Labs., Albuquerque, NM (United States)); Dry, B. (BE, Inc., Barnwell, SC (United States))

    1991-10-01T23:59:59.000Z

    The purpose of this NUREG is to present technical information that should be useful to NRC licensees in designing interior intrusion detection systems. Interior intrusion sensors are discussed according to their primary application: boundary-penetration detection, volumetric detection, and point protection. Information necessary for implementation of an effective interior intrusion detection system is presented, including principles of operation, performance characteristics and guidelines for design, procurement, installation, testing, and maintenance. A glossary of sensor data terms is included. 36 figs., 6 tabs.

  2. Reflective optical imaging system

    DOE Patents [OSTI]

    Shafer, David R. (Fairfield, CT)

    2000-01-01T23:59:59.000Z

    An optical system compatible with short wavelength (extreme ultraviolet) radiation comprising four reflective elements for projecting a mask image onto a substrate. The four optical elements are characterized in order from object to image as convex, concave, convex and concave mirrors. The optical system is particularly suited for step and scan lithography methods. The invention increases the slit dimensions associated with ringfield scanning optics, improves wafer throughput and allows higher semiconductor device density.

  3. Portable treatment systems study

    SciTech Connect (OSTI)

    Sherick, M.J.; Schwinkendorf, W.E.; Bechtold, T.E.; Cole, L.T.

    1997-03-01T23:59:59.000Z

    In developing their Site Treatment Plans (STPs), many of the Department of Energy installations identified some form of portable treatment, to facilitate compliant disposition of select mixed low-level wastestreams. The Environmental Management Office of Science and Technology requested that a systems study be performed to better define the potential role of portable treatment with respect to mixed low-level waste, highlight obstacles to implementation, and identify opportunities for future research and development emphasis. The study was performed by first establishing a representative set of mixed waste, then formulating portable treatment system concepts to meet the required processing needs for these wastes. The portable systems that were conceptualized were evaluated and compared to a fixed centralized treatment alternative. The system evaluations include a life-cycle cost analysis and an assessment of regulatory, institutional, and technical issues associated with the potential use of portable systems. The results of this study show that when all costs are included, there are no significant cost differences between portable systems and fixed systems. However, it is also emphasized that many uncertainties exist that could impact the cost of implementing portable treatment systems. Portable treatment could be made more attractive through private sector implementation, although there is little economic incentive for a commercial vendor to develop small, specialized treatment capabilities with limited applicability. Alternatively, there may also be valid reasons why fixed units cannot be used for some problematic wastestreams. In any event, there are some site-specific problems that still need to be addressed, and there may be some opportunity for research and development to make a positive impact in these areas.

  4. Thermoelectrochemical system and method

    DOE Patents [OSTI]

    Ludwig, F.A.; Townsend, C.W.; Eliash, B.M.

    1995-11-28T23:59:59.000Z

    A thermal electrochemical system is described in which an electrical current is generated between a cathode immersed in a concentrated aqueous solution of phosphoric acid and an anode immersed in a molten salt solution of ammonium phosphate and monohydric ammonium phosphate. Reactants consumed at the electrodes during the electrochemical reaction are thermochemically regenerated and recycled to the electrodes to provide continuous operation of the system. 5 figs.

  5. Steam and Condensate Systems

    E-Print Network [OSTI]

    Yates, W.

    1979-01-01T23:59:59.000Z

    efficiency and profit. Some important factors to consider in steam and condensate systems are: 1) Proper steam pressure 2) Adequate sized steam lines 3) Adequate sized condensate return lines 4) Utilization of flash steam 5) Properly sized... ! can cause system inefficiency. i Adequate sized steam lines assure the process will be furnished with sufficiertt i quantities of steam at the proper pressure. Adequate sized condensate return lines are essential to overall efficiency. lhese...

  6. Power System load management

    SciTech Connect (OSTI)

    Rudenko, Yu.N.; Semenov, V.A.; Sovalov, S.A.; Syutkin, B.D.

    1984-01-01T23:59:59.000Z

    The variation in demand nonuniformity is analyzed for the Unified Electric Power System of the USSR and certain interconnected power systems; the conditions for handling such nonuniformity with utilization of generating equipment having differing flexibility capabilities are also considered. On this basis approaches and techniques for acting on user loads, load management, in order to assure a balance between generated and consumed power are considered.

  7. Load sensing system

    DOE Patents [OSTI]

    Sohns, Carl W. (Oak Ridge, TN); Nodine, Robert N. (Knoxville, TN); Wallace, Steven Allen (Knoxville, TN)

    1999-01-01T23:59:59.000Z

    A load sensing system inexpensively monitors the weight and temperature of stored nuclear material for long periods of time in widely variable environments. The system can include an electrostatic load cell that encodes weight and temperature into a digital signal which is sent to a remote monitor via a coaxial cable. The same cable is used to supply the load cell with power. When multiple load cells are used, vast

  8. Ultrasonic flow metering system

    DOE Patents [OSTI]

    Gomm, Tyler J. (Meridian, ID); Kraft, Nancy C. (Idaho Falls, ID); Mauseth, Jason A. (Pocatello, ID); Phelps, Larry D. (Pocatello, ID); Taylor, Steven C. (Idaho Falls, ID)

    2002-01-01T23:59:59.000Z

    A system for determining the density, flow velocity, and mass flow of a fluid comprising at least one sing-around circuit that determines the velocity of a signal in the fluid and that is correlatable to a database for the fluid. A system for determining flow velocity uses two of the inventive circuits with directional transmitters and receivers, one of which is set at an angle to the direction of flow that is different from the others.

  9. Information systems definition architecture

    SciTech Connect (OSTI)

    Calapristi, A.J.

    1996-06-20T23:59:59.000Z

    The Tank Waste Remediation System (TWRS) Information Systems Definition architecture evaluated information Management (IM) processes in several key organizations. The intent of the study is to identify improvements in TWRS IM processes that will enable better support to the TWRS mission, and accommodate changes in TWRS business environment. The ultimate goals of the study are to reduce IM costs, Manage the configuration of TWRS IM elements, and improve IM-related process performance.

  10. Training Management Information System

    SciTech Connect (OSTI)

    Rackley, M.P.

    1989-01-01T23:59:59.000Z

    The Training Management Information System (TMIS) is an integrated information system for all training related activities. TMIS is at the leading edge of training information systems used in the nuclear industry. The database contains all the necessary records to confirm the department's adherence to accreditation criteria and houses all test questions, student records and information needed to evaluate the training process. The key to the TMIS system is that the impact of any change (i.e., procedure change, new equipment, safety incident in the commercial nuclear industry, etc.) can be tracked throughout the training process. This ensures the best training can be performed that meets the needs of the employees. TMIS is comprised of six functional areas: Job and Task Analysis, Training Materials Design and Development, Exam Management, Student Records/Scheduling, Evaluation, and Commitment Tracking. The system consists of a VAX 6320 Cluster with IBM and MacIntosh computers tied into an ethernet with the VAX. Other peripherals are also tied into the system: Exam Generation Stations to include mark sense readers for test grading, Production PC's for Desk-Top Publishing of Training Material, and PC Image Workstations. 5 figs.

  11. Antares Reference Telescope System

    SciTech Connect (OSTI)

    Viswanathan, V.K.; Kaprelian, E.; Swann, T.; Parker, J.; Wolfe, P.; Woodfin, G.; Knight, D.

    1983-01-01T23:59:59.000Z

    Antares is a 24-beam, 40-TW carbon-dioxide laser-fusion system currently nearing completion at the Los Alamos National Laboratory. The 24 beams will be focused onto a tiny target (typically 300 to 1000 ..mu..m in diameter) located approximately at the center of a 7.3-m-diameter by 9.3-m-long vacuum (10/sup -6/ torr) chamber. The design goal is to position the targets to within 10 ..mu..m of a selected nominal position, which may be anywhere within a fixed spherical region 1 cm in diameter. The Antares Reference Telescope System is intended to help achieve this goal for alignment and viewing of the various targets used in the laser system. The Antares Reference Telescope System consists of two similar electro-optical systems positioned in a near orthogonal manner in the target chamber area of the laser. Each of these consists of four subsystems: (1) a fixed 9X optical imaging subsystem which produces an image of the target at the vidicon; (2) a reticle projection subsystem which superimposes an image of the reticle pattern at the vidicon; (3) an adjustable front-lighting subsystem which illuminates the target; and (4) an adjustable back-lighting subsystem which also can be used to illuminate the target. The various optical, mechanical, and vidicon design considerations and trade-offs are discussed. The final system chosen (which is being built) and its current status are described in detail.

  12. Advanced Microturbine Systems

    SciTech Connect (OSTI)

    None

    2005-12-31T23:59:59.000Z

    Dept. of Energy (DOE) Cooperative Agreement DE-FC02-00-CH11061 was originally awarded to Honeywell International, Inc. â?? Honeywell Power Systems Inc. (HPSI) division located in Albuquerque, NM in October 2000 to conduct a program titled Advanced Microturbine Systems (AMS). The DOE Advanced Microturbines Systems Program was originally proposed as a five-year program to design and develop a high efficiency, low emissions, durable microturbine system. The period of performance was to be October 2000 through September 2005. Program efforts were underway, when one year into the program Honeywell sold the intellectual property of Honeywell Power Systems Inc. and HPSI ceased business operations. Honeywell made an internal decision to restructure the existing program due to the HPSI shutdown and submitted a formal request to DOE on September 24, 2001 to transfer the Cooperative Agreement to Honeywell Engines, Systems and Services (HES&S) in Phoenix, AZ in order to continue to offer support for DOE's Advanced Microturbine Program. Work continued on the descoped program under Cooperative Agreement No. DE-FC26-00-CH11061 and has been completed.

  13. Vessel structural support system

    DOE Patents [OSTI]

    Jenko, James X. (N. Versailles, PA); Ott, Howard L. (Kiski Twp., Allegheny County, PA); Wilson, Robert M. (Plum Boro, PA); Wepfer, Robert M. (Murrysville, PA)

    1992-01-01T23:59:59.000Z

    Vessel structural support system for laterally and vertically supporting a vessel, such as a nuclear steam generator having an exterior bottom surface and a side surface thereon. The system includes a bracket connected to the bottom surface. A support column is pivotally connected to the bracket for vertically supporting the steam generator. The system also includes a base pad assembly connected pivotally to the support column for supporting the support column and the steam generator. The base pad assembly, which is capable of being brought to a level position by turning leveling nuts, is anchored to a floor. The system further includes a male key member attached to the side surface of the steam generator and a female stop member attached to an adjacent wall. The male key member and the female stop member coact to laterally support the steam generator. Moreover, the system includes a snubber assembly connected to the side surface of the steam generator and also attached to the adjacent wall for dampening lateral movement of the steam generator. In addition, the system includes a restraining member of "flat" attached to the side surface of the steam generator and a bumper attached to the adjacent wall. The flat and the bumper coact to further laterally support the steam generator.

  14. Control system health test system and method | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    Control system health test system and method Re-direct Destination: A method is provided for testing multiple elements of a work machine, including a control system, a component, a...

  15. AC system stability analysis and assessment for Shipboard Power Systems 

    E-Print Network [OSTI]

    Qi, Li

    2006-04-12T23:59:59.000Z

    The electric power systems in U.S. Navy ships supply energy to sophisticated systems for weapons, communications, navigation and operation. The reliability and survivability of a Shipboard Power System (SPS) are critical ...

  16. INDUSTRIAL&SYSTEMS Industrial and Systems engineers use engineering

    E-Print Network [OSTI]

    Rohs, Remo

    78 INDUSTRIAL&SYSTEMS Industrial and Systems engineers use engineering and business principles companies compete in today's global marketplace. The Industrial and Systems engineer's task is to take of industries including consulting, technology development, software, supply chain manufacturing, engineering

  17. A method for tradespace exploration of systems of systems

    E-Print Network [OSTI]

    Chattopadhyay, Debarati

    2009-01-01T23:59:59.000Z

    Systems of Systems (SoS) are a current focus of many organizations interested in integrating assets and utilizing new technology to create multi-component systems that deliver value over time. The dynamic composition of ...

  18. AC system stability analysis and assessment for Shipboard Power Systems

    E-Print Network [OSTI]

    Qi, Li

    2006-04-12T23:59:59.000Z

    The electric power systems in U.S. Navy ships supply energy to sophisticated systems for weapons, communications, navigation and operation. The reliability and survivability of a Shipboard Power System (SPS) are critical to the mission of a Navy...

  19. Gas Slow Control System Specifications

    E-Print Network [OSTI]

    Roma "La Sapienza", Università di

    AMS-02 TRD Gas Slow Control System Specifications v 4.2 26-06-2006 A. Bartoloni, B. Borgia, F. Bucci, F. R. Spada INFN Sezione di Roma 1- Roma, Italy #12;2/45 #12;3/45 1. ABSTRACT 5 2. GAS SYSTEM FUNCTIONAL DESCRIPTION 5 3. GAS CONTROL SYSTEM 8 4. CONTROL SYSTEM COMPONENTS 12 a. Universal Control System

  20. FLOOD WARNING SYSTEM NERANG RIVER

    E-Print Network [OSTI]

    Greenslade, Diana

    ALERT System The Nerang River ALERT flood warning system was completed in the early 1990's as a coFLOOD WARNING SYSTEM for the NERANG RIVER This brochure describes the flood warning system operated Nerang ALERT System Flood Warnings and Bulletins Interpreting Flood Warnings and River Height Bulletins

  1. Methods, apparatus, and systems for monitoring transmission systems

    DOE Patents [OSTI]

    Polk, Robert E. (Idaho Falls, ID) [Idaho Falls, ID; Svoboda, John M. (Idaho Falls, ID) [Idaho Falls, ID; West, Phillip B. (Idaho Falls, ID) [Idaho Falls, ID; Heath, Gail L. (Iona, ID) [Iona, ID; Scott, Clark L. (Idaho Falls, ID) [Idaho Falls, ID

    2010-08-31T23:59:59.000Z

    A sensing platform for monitoring a transmission system, and method therefor, may include a sensor that senses one or more conditions relating to a condition of the transmission system and/or the condition of an environment around the transmission system. A control system operatively associated with the sensor produces output data based on an output signal produced by the sensor. A transmitter operatively associated with the control system transmits the output data from the control system.

  2. Solar Energy Systems - Research - Systems Analysis - Smart Grid...

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

    Solar Energy Systems U.S. Department of Energy Search Argonne ... Search Argonne Home > SES Home Research Home Photovoltaics Transparent Conductors Concentrating Sunlight Systems...

  3. Photovoltaic Systems Interconnected onto Network Distribution Systems--Success Stories

    SciTech Connect (OSTI)

    Coddington, M.; Kroposki, B.; Basso, T.; Lynn, K.; Sammon, D.; Vaziri, M.; Yohn, T.

    2009-04-01T23:59:59.000Z

    This report examines six case studies of photovoltaic systems integrated into secondary network systems in four major U.S. Solar America cities.

  4. ADVANCED TURBINE SYSTEMS PROGRAM

    SciTech Connect (OSTI)

    Gregory Gaul

    2004-04-21T23:59:59.000Z

    Natural gas combustion turbines are rapidly becoming the primary technology of choice for generating electricity. At least half of the new generating capacity added in the US over the next twenty years will be combustion turbine systems. The Department of Energy has cosponsored with Siemens Westinghouse, a program to maintain the technology lead in gas turbine systems. The very ambitious eight year program was designed to demonstrate a highly efficient and commercially acceptable power plant, with the ability to fire a wide range of fuels. The main goal of the Advanced Turbine Systems (ATS) Program was to develop ultra-high efficiency, environmentally superior and cost effective competitive gas turbine systems for base load application in utility, independent power producer and industrial markets. Performance targets were focused on natural gas as a fuel and included: System efficiency that exceeds 60% (lower heating value basis); Less than 10 ppmv NO{sub x} emissions without the use of post combustion controls; Busbar electricity that are less than 10% of state of the art systems; Reliability-Availability-Maintainability (RAM) equivalent to current systems; Water consumption minimized to levels consistent with cost and efficiency goals; and Commercial systems by the year 2000. In a parallel effort, the program was to focus on adapting the ATS engine to coal-derived or biomass fuels. In Phase 1 of the ATS Program, preliminary investigators on different gas turbine cycles demonstrated that net plant LHV based efficiency greater than 60% was achievable. In Phase 2 the more promising cycles were evaluated in greater detail and the closed-loop steam-cooled combined cycle was selected for development because it offered the best solution with least risk for achieving the ATS Program goals for plant efficiency, emissions, cost of electricity and RAM. Phase 2 also involved conceptual ATS engine and plant design and technology developments in aerodynamics, sealing, combustion, cooling, materials, coatings and casting development. The market potential for the ATS gas turbine in the 2000-2014 timeframe was assessed for combined cycle, simple cycle and integrated gasification combined cycle, for three engine sizes. The total ATS market potential was forecasted to exceed 93 GW. Phase 3 and Phase 3 Extension involved further technology development, component testing and W501ATS engine detail design. The technology development efforts consisted of ultra low NO{sub x} combustion, catalytic combustion, sealing, heat transfer, advanced coating systems, advanced alloys, single crystal casting development and determining the effect of steam on turbine alloys. Included in this phase was full-load testing of the W501G engine at the McIntosh No. 5 site in Lakeland, Florida.

  5. Mobile systems capability plan

    SciTech Connect (OSTI)

    NONE

    1996-09-01T23:59:59.000Z

    This plan was prepared to initiate contracting for and deployment of these mobile system services. 102,000 cubic meters of retrievable, contact-handled TRU waste are stored at many sites around the country. Also, an estimated 38,000 cubic meters of TRU waste will be generated in the course of waste inventory workoff and continuing DOE operations. All the defense TRU waste is destined for disposal in WIPP near Carlsbad NM. To ship TRU waste there, sites must first certify that the waste meets WIPP waste acceptance criteria. The waste must be characterized, and if not acceptable, subjected to additional processing, including repackaging. Most sites plan to use existing fixed facilities or open new ones between FY1997-2006 to perform these functions; small-quantity sites lack this capability. An alternative to fixed facilities is the use of mobile systems mounted in trailers or skids, and transported to sites. Mobile systems will be used for all characterization and certification at small sites; large sites can also use them. The Carlsbad Area Office plans to pursue a strategy of privatization of mobile system services, since this offers a number of advantages. To indicate the possible magnitude of the costs of deploying mobile systems, preliminary estimates of equipment, maintenance, and operating costs over a 10-year period were prepared and options for purchase, lease, and privatization through fixed-price contracts considered.

  6. Sleeve reaction chamber system

    DOE Patents [OSTI]

    Northrup, M. Allen (Berkeley, CA); Beeman, Barton V. (San Mateo, CA); Benett, William J. (Livermore, CA); Hadley, Dean R. (Manteca, CA); Landre, Phoebe (Livermore, CA); Lehew, Stacy L. (Livermore, CA); Krulevitch, Peter A. (Pleasanton, CA)

    2009-08-25T23:59:59.000Z

    A chemical reaction chamber system that combines devices such as doped polysilicon for heating, bulk silicon for convective cooling, and thermoelectric (TE) coolers to augment the heating and cooling rates of the reaction chamber or chambers. In addition the system includes non-silicon-based reaction chambers such as any high thermal conductivity material used in combination with a thermoelectric cooling mechanism (i.e., Peltier device). The heat contained in the thermally conductive part of the system can be used/reused to heat the device, thereby conserving energy and expediting the heating/cooling rates. The system combines a micromachined silicon reaction chamber, for example, with an additional module/device for augmented heating/cooling using the Peltier effect. This additional module is particularly useful in extreme environments (very hot or extremely cold) where augmented heating/cooling would be useful to speed up the thermal cycling rates. The chemical reaction chamber system has various applications for synthesis or processing of organic, inorganic, or biochemical reactions, including the polymerase chain reaction (PCR) and/or other DNA reactions, such as the ligase chain reaction.

  7. Modeling the earth system

    SciTech Connect (OSTI)

    Ojima, D. [ed.

    1992-12-31T23:59:59.000Z

    The 1990 Global Change Institute (GCI) on Earth System Modeling is the third of a series organized by the Office for Interdisciplinary Earth Studies to look in depth at particular issues critical to developing a better understanding of the earth system. The 1990 GCI on Earth System Modeling was organized around three themes: defining critical gaps in the knowledge of the earth system, developing simplified working models, and validating comprehensive system models. This book is divided into three sections that reflect these themes. Each section begins with a set of background papers offering a brief tutorial on the subject, followed by working group reports developed during the institute. These reports summarize the joint ideas and recommendations of the participants and bring to bear the interdisciplinary perspective that imbued the institute. Since the conclusion of the 1990 Global Change Institute, research programs, nationally and internationally, have moved forward to implement a number of the recommendations made at the institute, and many of the participants have maintained collegial interactions to develop research projects addressing the needs identified during the two weeks in Snowmass.

  8. Integrated transportation system design optimization

    E-Print Network [OSTI]

    Taylor, Christine P. (Christine Pia), 1979-

    2007-01-01T23:59:59.000Z

    Traditionally, the design of a transportation system has focused on either the vehicle design or the network flow, assuming the other as given. However, to define a system level architecture for a transportation system, ...

  9. Authorization Recycling in RBAC Systems

    E-Print Network [OSTI]

    Authorization Recycling in RBAC Systems 1Laboratory for Education and Research in Secure Systems ·motivation ·recycling approach recycling algorithms experimental evaluations summary & future work #12 issued before (precise recycling) #12;6 Laboratory for Education and Research in Secure Systems

  10. Prism : an answer projection system

    E-Print Network [OSTI]

    Wu, Lynn, 1981-

    2003-01-01T23:59:59.000Z

    Prism is an answer projection system that combines the best attributes of traditional and Web-based question answering systems. Traditional question answering systems retrieve answers with pinpoint accuracy but limited ...

  11. Global optimization of hybrid systems

    E-Print Network [OSTI]

    Lee, Cha Kun

    2006-01-01T23:59:59.000Z

    Systems that exhibit both discrete state and continuous state dynamics are called hybrid systems. In most nontrivial cases, these two aspects of system behavior interact to such a significant extent that they cannot be ...

  12. PEP instrumentation and control system

    SciTech Connect (OSTI)

    Melen, R.

    1980-06-01T23:59:59.000Z

    This paper describes the operating characteristics of the primary components that form the PEP Instrumentation and Control System. Descriptions are provided for the computer control system, beam monitors, and other support systems.

  13. Desiccant-Based Combined Systems

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    .4 Regeneration and Parasitic Energy Optimization .........................................................22 5Desiccant-Based Combined Systems: Integrated Active Desiccant Rooftop Hybrid System Development;ORNL/SUB/01/4000010402 Desiccant-Based Combined Systems: Integrated Active Desiccant Rooftop Hybrid

  14. Optimal concentrations in transport systems

    E-Print Network [OSTI]

    Kim, Wonjung

    Many biological and man-made systems rely on transport systems for the distribution of material, for example matter and energy. Material transfer in these systems is determined by the flow rate and the concentration of ...

  15. Sandia Energy - PV Systems Reliability

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

    Systems Reliability Home Stationary Power Energy Conversion Efficiency Solar Energy Photovoltaics PV Systems Reliability PV Systems ReliabilityCoryne Tasca2015-05-08T03:40:54+00:00...

  16. Photovoltaic system controller

    SciTech Connect (OSTI)

    Gerken, K.F.; Sullivan, R.A.

    1989-12-19T23:59:59.000Z

    This patent describes a photovoltaic system controller for utilization with a photovoltaic power system including at least a photovoltaic array, a system battery adapted to be charged by the array and a load adapted to be powered by the battery. The controller comprising a microprocessor having an erasable programmable memory. The microprocessor having means to receive input data from the array, the battery and the load. The microprocessor having means to evaluate the input data in relation to at least one predetermined setpoint, the microprocessor in response to the evaluation being adapted to disconnect the battery from the array or to disconnect the load from the battery. The setpoint being adapted to be adjusted to a second setpoint by adjustment means, and the erasable programmable memory being adapted to be changed whereby the evaluation performed by the microprocessor is also changed.

  17. Arc fault detection system

    DOE Patents [OSTI]

    Jha, Kamal N. (Bethel Park, PA)

    1999-01-01T23:59:59.000Z

    An arc fault detection system for use on ungrounded or high-resistance-grounded power distribution systems is provided which can be retrofitted outside electrical switchboard circuits having limited space constraints. The system includes a differential current relay that senses a current differential between current flowing from secondary windings located in a current transformer coupled to a power supply side of a switchboard, and a total current induced in secondary windings coupled to a load side of the switchboard. When such a current differential is experienced, a current travels through a operating coil of the differential current relay, which in turn opens an upstream circuit breaker located between the switchboard and a power supply to remove the supply of power to the switchboard.

  18. Ion mobility sensor system

    DOE Patents [OSTI]

    Xu, Jun; Watson, David B.; Whitten, William B.

    2013-01-22T23:59:59.000Z

    An ion mobility sensor system including an ion mobility spectrometer and a differential mobility spectrometer coupled to the ion mobility spectrometer. The ion mobility spectrometer has a first chamber having first end and a second end extending along a first direction, and a first electrode system that generates a constant electric field parallel to the first direction. The differential mobility spectrometer includes a second chamber having a third end and a fourth end configured such that a fluid may flow in a second direction from the third end to the fourth end, and a second electrode system that generates an asymmetric electric field within an interior of the second chamber. Additionally, the ion mobility spectrometer and the differential mobility spectrometer form an interface region. Also, the first end and the third end are positioned facing one another so that the constant electric field enters the third end and overlaps the fluid flowing in the second direction.

  19. Advanced drilling systems study.

    SciTech Connect (OSTI)

    Pierce, Kenneth G.; Livesay, Billy Joe; Finger, John Travis (Livesay Consultants, Encintas, CA)

    1996-05-01T23:59:59.000Z

    This report documents the results of a study of advanced drilling concepts conducted jointly for the Natural Gas Technology Branch and the Geothermal Division of the U.S. Department of Energy. A number of alternative rock cutting concepts and drilling systems are examined. The systems cover the range from current technology, through ongoing efforts in drilling research, to highly speculative concepts. Cutting mechanisms that induce stress mechanically, hydraulically, and thermally are included. All functions necessary to drill and case a well are considered. Capital and operating costs are estimated and performance requirements, based on comparisons of the costs for alternative systems to conventional drilling technology, are developed. A number of problems common to several alternatives and to current technology are identified and discussed.

  20. Distributed road assessment system

    DOE Patents [OSTI]

    Beer, N. Reginald; Paglieroni, David W

    2014-03-25T23:59:59.000Z

    A system that detects damage on or below the surface of a paved structure or pavement is provided. A distributed road assessment system includes road assessment pods and a road assessment server. Each road assessment pod includes a ground-penetrating radar antenna array and a detection system that detects road damage from the return signals as the vehicle on which the pod is mounted travels down a road. Each road assessment pod transmits to the road assessment server occurrence information describing each occurrence of road damage that is newly detected on a current scan of a road. The road assessment server maintains a road damage database of occurrence information describing the previously detected occurrences of road damage. After the road assessment server receives occurrence information for newly detected occurrences of road damage for a portion of a road, the road assessment server determines which newly detected occurrences correspond to which previously detected occurrences of road damage.

  1. Arc fault detection system

    DOE Patents [OSTI]

    Jha, K.N.

    1999-05-18T23:59:59.000Z

    An arc fault detection system for use on ungrounded or high-resistance-grounded power distribution systems is provided which can be retrofitted outside electrical switchboard circuits having limited space constraints. The system includes a differential current relay that senses a current differential between current flowing from secondary windings located in a current transformer coupled to a power supply side of a switchboard, and a total current induced in secondary windings coupled to a load side of the switchboard. When such a current differential is experienced, a current travels through a operating coil of the differential current relay, which in turn opens an upstream circuit breaker located between the switchboard and a power supply to remove the supply of power to the switchboard. 1 fig.

  2. SATSIN System Manual

    SciTech Connect (OSTI)

    Livingston, R.C.

    1995-01-01T23:59:59.000Z

    This report outlines the design, functions and operation of the HAARP Diagnostic Satellite Scintillation (SATSIN) system that will be used to characterize the structure and dynamics of F region ionospheric irregularities created during HF heating. When in routine operation, the SATSIN system will be located so that the propagation path from satellite radio beacons passes through the heated volume created by HAARP. The signal, altered in phase and amplitude by the irregularities, is received by the SATSIN array of eight antennas and is processed to extract the spatial and temporal characteristics of the scintillation. From this information, the strength, shape and motion of the in situ irregularities generated by HAARP can be implied. The hardware and software components of the system are reviewed, and the installation and operation in conjunction with the HAARP network are outlined.

  3. Continuous pressure letdown system

    DOE Patents [OSTI]

    Sprouse, Kenneth M.; Matthews, David R.; Langowski, Terry

    2010-06-08T23:59:59.000Z

    A continuous pressure letdown system connected to a hopper decreases a pressure of a 2-phase (gas and solid) dusty gas stream flowing through the system. The system includes a discharge line for receiving the dusty gas from the hopper, a valve, a cascade nozzle assembly positioned downstream of the discharge line, a purge ring, an inert gas supply connected to the purge ring, an inert gas throttle, and a filter. The valve connects the hopper to the discharge line and controls introduction of the dusty gas stream into the discharge line. The purge ring is connected between the discharge line and the cascade nozzle assembly. The inert gas throttle controls a flow rate of an inert gas into the cascade nozzle assembly. The filter is connected downstream of the cascade nozzle assembly.

  4. Corrosion Monitoring System

    SciTech Connect (OSTI)

    Dr. Russ Braunling

    2004-10-31T23:59:59.000Z

    The Corrosion Monitoring System (CMS) program developed and demonstrated a continuously on-line system that provides real-time corrosion information. The program focused on detecting pitting corrosion in its early stages. A new invention called the Intelligent Ultrasonic Probe (IUP) was patented on the program. The IUP uses ultrasonic guided waves to detect small defects and a Synthetic Aperture Focusing Technique (SAFT) algorithm to provide an image of the pits. Testing of the CMS demonstrated the capability to detect pits with dimensionality in the sub-millimeter range. The CMS was tested in both the laboratory and in a pulp and paper industrial plant. The system is capable of monitoring the plant from a remote location using the internet.

  5. Economics of Irrigation Systems 

    E-Print Network [OSTI]

    Amosson, Stephen H.; New, Leon; Almas, Lal; Bretz, Fran; Marek, Thomas

    2002-01-11T23:59:59.000Z

    -inch for the intermediate water-use scenario (sorghum/soybeans) at 350- foot pumping lift for the six irrigation systems. dollars/acre-inch of water Cost Component/System CF SF MESA LESA LEPA SDI A. Fixed cost Depreciation 0.32 0.45 0.76 1.06 1.22 2.09 Taxes 0.02 0.02 0... of $832.23 per acre (Table 2). The economic feasibility of a new irrigation system can be affected by the marginal tax rate. For example, if a producer?s marginal tax rate is 28 percent instead of 15 percent, the net investment in subsurface drip...

  6. Combustion pinhole camera system

    DOE Patents [OSTI]

    Witte, A.B.

    1984-02-21T23:59:59.000Z

    A pinhole camera system is described utilizing a sealed optical-purge assembly which provides optical access into a coal combustor or other energy conversion reactors. The camera system basically consists of a focused-purge pinhole optical port assembly, a conventional TV vidicon receiver, an external, variable density light filter which is coupled electronically to the vidicon automatic gain control (agc). The key component of this system is the focused-purge pinhole optical port assembly which utilizes a purging inert gas to keep debris from entering the port and a lens arrangement which transfers the pinhole to the outside of the port assembly. One additional feature of the port assembly is that it is not flush with the interior of the combustor. 2 figs.

  7. Modular Optical PDV System

    SciTech Connect (OSTI)

    Araceli Rutkowski, David Esquibel

    2008-12-11T23:59:59.000Z

    A modular optical photon Doppler velocimetry (PDV) detector system has been developed by using readily available optical components with a 20-GHz Miteq optical detector into eight channels of single-wide modules integrated into a 3U rack unit (1U = 1.75 inches) with a common power supply. Optical fibers were precisely trimmed, welded, and timed within each unit. This system has been used to collect dynamic velocity data on various physics experiments. An optical power meter displays the laser input power to the module and optical power at the detector. An adjustable micro-electromechanical system (MEMS) optical attenuator is used to adjust the amount of unshifted light entering the detector. Front panel LEDs show the presence of power to the module. A fully loaded chassis with eight channels consumes 45 watts of power. Each chassis requires 1U spacing above and below for heat management. Modules can be easily replaced.

  8. Systems integration for global sustainability

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    Le, A. Z. Khan, Improving integration for integrated coastal347 ISSUE 6225 Systems integration for global sustainabilitySUSTAINABILITY Systems integration for global sustainability

  9. Mesdi Systems | Department of Energy

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

    Systems Massachusetts Institute of Technology SolidEnergy Systems developed cutting-edge battery technologies to meet the world's growing energy storage demand. The Polymer Ionic...

  10. Sandia National Laboratories: Systems Engineering

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

    Partnership, Renewable Energy, Research & Capabilities, Systems Analysis, Systems Engineering, Wind Energy Sandia recently produced the final set of inspection panels to be used...

  11. Sandia National Laboratories: Systems Engineering

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

    News & Events, Renewable Energy, Solar, Solar Newsletter, Systems Analysis, Systems Engineering Engineers at Sandia, along with part-ner institutions Georgia Tech, Bucknell...

  12. Sandia National Laboratories: Systems Engineering

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

    On November 12, 2013, in CRF, Energy, Facilities, News, News & Events, Systems Engineering, Transportation Energy Joe Pratt (in Sandia's Energy Systems Engineering & Analysis...

  13. Sandia National Laboratories: Systems Engineering

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

    Photovoltaic, Renewable Energy, SMART Grid, Solar, Systems Analysis, Systems Engineering The Mesa del Sol microgrid project was selected as one of eight finalists among...

  14. Information Systems | Department of Energy

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

    System (CAIS) Web database where it is costed using various RS Means Construction Cost Book data. RS Means is the predominant national cost estimating system. Currently...

  15. Integrated Energy System Dispatch Optimization

    E-Print Network [OSTI]

    Firestone, Ryan; Stadler, Michael; Marnay, Chris

    2006-01-01T23:59:59.000Z

    Energy System Dispatch Optimization Ryan Firestone, MichaelEnergy System Dispatch Optimization Ryan Firestone - Studentthe real-time dispatch optimization problem for a generic

  16. Reactor & Nuclear Systems Publications | ORNL

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

    Science Home | Science & Discovery | Nuclear Science | Publications and Reports | Reactor and Nuclear Systems Publications SHARE Reactor and Nuclear Systems Publications The...

  17. Biodetection Systems | Argonne National Laboratory

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

    Biodetection Systems Biodetection Systems Argonne's efforts in biodetection technology focus on environmental molecular microbiology and technology development, with an emphasis on...

  18. APS Technical Systems Monitoring Page

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

    Photon Source Technical Systems Accelerator Systems Storage Ring Status for the past 24 hours with real Time of Day User beam delineated. Current, Lifetime, History with 24-hr...

  19. Systems Integration | ornl.gov

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

    Systems Integration SHARE Systems Integration The Distributed Energy Communications and Controls (DECC) Laboratory offers a unique test bed for testing distributed energy...

  20. Load sensing system

    DOE Patents [OSTI]

    Sohns, C.W.; Nodine, R.N.; Wallace, S.A.

    1999-05-04T23:59:59.000Z

    A load sensing system inexpensively monitors the weight and temperature of stored nuclear material for long periods of time in widely variable environments. The system can include an electrostatic load cell that encodes weight and temperature into a digital signal which is sent to a remote monitor via a coaxial cable. The same cable is used to supply the load cell with power. When multiple load cells are used, vast inventories of stored nuclear material can be continuously monitored and inventoried of minimal cost. 4 figs.