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Relevant bibliographies by topics / UNIX System V (Computer operating system)

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Academic literature on the topic 'UNIX System V (Computer operating system)'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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Journal articles on the topic "UNIX System V (Computer operating system)"

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Bagnoli, Michele, Bruno Belvedere, Michele Bianchi, Alberto Borghetti, Andrea De Pascale, and Mario Paolone. "A Feasibility Study of an Auxiliary Power Unit Based on a PEM Fuel Cell for On-Board Applications." Journal of Fuel Cell Science and Technology 3, no. 4 (March 27, 2006): 445–51. http://dx.doi.org/10.1115/1.2349527.

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Proton exchange membrane (PEM) fuel cells show characteristics of high power density, low operating temperature, and fast start-up capability, which make them potentially suitable to replace conventional power sources (e.g., internal combustion engines) as auxiliary power units (APU) for on-board applications. This paper presents a methodology for a preliminary investigation on either sizing and operating management of the main components of an on-board power system composed by: (i) PEM fuel cell, (ii) hydrogen storage subsystem, (iii) battery, (iv) grid interface for the connection to an external electrical power source when available, and (v) electrical appliances and auxiliaries installed on the vehicle. A model able to reproduce the typical profiles of electric power requests of on-board appliances and auxiliaries has been implemented in a computer program. The proposed methodology helps also to define the sizing of the various system components and to identify the fuel cell operating sequence, on the basis of the above mentioned load profiles.

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Furber, D. J. "The Unix operating system." Information and Software Technology 32, no. 3 (April 1990): 229. http://dx.doi.org/10.1016/0950-5849(90)90184-s.

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Menendez, Doug. "Understanding the Unix Operating System." EDPACS 19, no. 2 (August 1991): 9–16. http://dx.doi.org/10.1080/07366989109451261.

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Huan, Shi Yu. "A Unix-Based Telecom Billing System." Applied Mechanics and Materials 321-324 (June 2013): 2923–26. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.2923.

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With the development of computer technology, people are no longer satisfied with a single operating system. More and more people like to use UNIX system because of its high reliability, good open, and powerful network features. The design of this telecommunications billing system is based on Browser / Server model using the java language for the UNIX platforms laboratory environment. The system can accurately time and automatically charge according to the business types when the user rents the server, and to complete information management of the server and user. This system is simple, friendly interface. It reduces operating costs of the telecommunications operators and improves productivity of them.

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ZHANG, DU, and RAUL VELEZ. "BMS: A KNOWLEDGE-BASED TOOL FOR UNIX PERFORMANCE TUNING." International Journal on Artificial Intelligence Tools 05, no. 03 (September 1996): 323–45. http://dx.doi.org/10.1142/s0218213096000225.

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This paper presents the design and implementation of a knowledge-based tool for performance tuning of the UNIX operating system. The tool, called BMS, provides an intelligent support and maintenance for identifying performance bottlenecks in UNIX and recommending solutions to the problems. Currently, it handles problems in UNIX resource management, such as memory utilization, disk utilization, CPU scheduling and I/O devices. BMS has been implemented in the EXSYS environment and tested on UNIX V.3. Preliminary results have indicated that such a knowledge-based tool to operating system performance tuning (1) is viable; (2) increases the productivity of system maintenance personnel and reduces the cost of training; and (3) offers a better service to operating system users by providing prompt recommendations to solutions of their system performance problems.

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Menendez, Doug. "Introducing Information Systems Auditors to the Unix Operating System." EDPACS 19, no. 1 (July 1991): 8–15. http://dx.doi.org/10.1080/07366989109451255.

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Nikulenkov, A. G., D. V. Samoilenko, and T. V. Nikulenkova. "Study of the impact of NPP rated thermal power uprate on process behavior at different transient conditions." Nuclear and Radiation Safety, no. 4(80) (December 3, 2018): 9–13. http://dx.doi.org/10.32918/nrs.2018.4(80).02.

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Today, objective preconditions have been formed to find the ways on how to increase cost-effectiveness of NPPs operation, while providing the required safety level. One of such ways to increase thermal nominal power of power unit. The paper provides for the results of reactor behavior analysis at increased thermal power above nominal received using a one-dimensional system computer code RELAP5/MOD3.2 and relevant model of VVER-1000 (V-320) power unit. Calculation analyses are performed for quasi-static reactor operating conditions and transients using realistic approach in terms of initial performance parameters of reactor installation. In researches, representative initial events for transients have been selected according to the principle described further. For an abnormal operation, an event has been selected based on its high frequency and consequences, which require decreasing reactor power down to 50 % of nominal thermal power. For emergency conditions an event has been selected which is caused by external extreme impacts typical for Ukrainian NPP sites resulting in the worst consequences. Thus, the transients are represented by events associated with failure of a single turbine-driven feed water pump and total station blackout unit. To analyze emergency conditions caused by long-term blackout, they were additionally accompanied by a leakage through reactor coolant pump seals. Given that increase of steam flow in a turbine at increased thermal power above nominal requires additional studies on residual service life assessment of its critical components, a 3-D model of high-pressure rotor of a full speed turbine is proposed for further studies. Based on the calculations a comparative analysis of major parameters of the reactor at rated and increased thermal power is performed with assessment of significant factors to be considered in further studies on increase of installed thermal output of NPP unit.

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Luta, Doudou, and Atanda Raji. "Fuzzy Rule-Based and Particle Swarm Optimisation MPPT Techniques for a Fuel Cell Stack." Energies 12, no. 5 (March 11, 2019): 936. http://dx.doi.org/10.3390/en12050936.

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The negative environmental impact and the rapidly declining reserve of fossil fuel-based energy sources for electricity generation is a big challenge to finding sustainable alternatives. This scenario is complicated by the ever-increasing world population growth demanding a higher standard of living. A fuel cell system is able to generate electricity and water with higher energy efficiency while producing near-zero emissions. A common fuel cell stack displays a nonlinear power characteristic as a result of internal limitations and operating parameters such as temperature, hydrogen and oxygen partial pressures and humidity levels, leading to a reduced overall system performance. It is therefore important to extract as much power as possible from the stack, thus hindering excessive fuel use. This study considers and compares two Maximum Power Point Tracking (MPPT) approaches; one based on the Mamdani Fuzzy Inference System and the other on the Particle Swarm Optimisation (PSO) algorithm to maintain the output power of a fuel cell stack extremely close to its maximum. To ensure that, the power converter interfaced to the fuel cell unit must be able to continuously self-modify its parameters, hence changing its voltage and current depending upon the Maximum Power Point position. While various methods exist for Maximum Power Point tracker design, this paper analyses the response characteristics of a Mamdani Fuzzy Inference Engine and the Particle Swarm Optimisation technique. The investigation was conducted on a 53 kW Proton Exchange Membrane Fuel Cell interfaced to a DC-to-DC boost converter supplying 1.2 kV from a 625 V input DC voltage. The modelling was accomplished using a Matlab/Simulink environment. The results showed that the MPPT controller based on the PSO algorithm presented better tracking efficiency as compared to the Mamdani controller. Furthermore, the rise time of the PSO controller was slightly shorter than the Mamdani controller and the overshoot of the PSO controller was 2% lower than that of the Mamdani controller.

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Liu, Hai-Tao, Zhi-Yu Wen, Yi Xu, Zheng-Guo Shang, Jin-Lan Peng, and Peng Tian. "An integrated microfluidic analysis microsystems with bacterial capture enrichment and in-situ impedance detection." Modern Physics Letters B 31, no. 25 (September 6, 2017): 1750233. http://dx.doi.org/10.1142/s0217984917502335.

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In this paper, an integrated microfluidic analysis microsystems with bacterial capture enrichment and in-situ impedance detection was purposed based on microfluidic chips dielectrophoresis technique and electrochemical impedance detection principle. The microsystems include microfluidic chip, main control module, and drive and control module, and signal detection and processing modulet and result display unit. The main control module produce the work sequence of impedance detection system parts and achieve data communication functions, the drive and control circuit generate AC signal which amplitude and frequency adjustable, and it was applied on the foodborne pathogens impedance analysis microsystems to realize the capture enrichment and impedance detection. The signal detection and processing circuit translate the current signal into impendence of bacteria, and transfer to computer, the last detection result is displayed on the computer. The experiment sample was prepared by adding Escherichia coli standard sample into chicken sample solution, and the samples were tested on the dielectrophoresis chip capture enrichment and in-situ impedance detection microsystems with micro-array electrode microfluidic chips. The experiments show that the Escherichia coli detection limit of microsystems is [Formula: see text] CFU/mL and the detection time is within 6 min in the optimization of voltage detection 10 V and detection frequency 500 KHz operating conditions. The integrated microfluidic analysis microsystems laid the solid foundation for rapid real-time in-situ detection of bacteria.

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Djordjevic-Kajan, S., Dragan Stojanovic, and Aleksandar Stanimirovic. "Advanced System Software curricula." Facta universitatis - series: Electronics and Energetics 18, no. 2 (2005): 309–17. http://dx.doi.org/10.2298/fuee0502309d.

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An advanced System Software curricula at the Faculty of Electronic Engineering in Nis is presented in this paper. The system software track consists of two important themes of Computer Science and Computing in General organized now as two separated courses: Operating Systems course and System Software Development and System Programming course. Both courses offer extensive teaching of foundational concepts and principles of Operating Systems and System Programming along with design and implementation of presented topics in real operating systems and system software, such as Unix, Linux and Windows 2000/XP. Laboratory environments and exercises for both courses offer both examination of main algorithms and structures within operating systems and system software through simulation, and what is more important, hands-on experience with operating system internals and code.

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Dissertations / Theses on the topic "UNIX System V (Computer operating system)"

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Tempo, Rinaldo. "In integrated user interface for UNIX operating system." Thesis, University of Bath, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236451.

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Chan, Susan Chui-Sheung. "Design and implementation of an event monitor for the unix operating system." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26187.

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Tuning a computer system effectively requires prior studies on the performance of the system. There are different types of tools available to measure a system: hardware, firmware and software. This thesis presents the design and implementation of an event monitor, which is one type of software tools. The event monitor was developed on a SUN1 workstation running UNIX 4.2bsd version 1.4. Six types of events were selected to be measured, namely transactions, logins/logouts, pageins, pageouts, disk I/Os and forks/exits. The operating system was modified to include probes to trap these events. For a final testing of the event monitor, it was ported and installed onto a SUN3 workstation running UNIX 4.2bsd version 3.2. Measurements collected were analyzed by a capacity planning package condenser. The results give an indication of the system workload and the system performance. Benchmarks were also set up to measure the overhead incurred by the event monitor.
Science, Faculty of
Computer Science, Department of
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Grossman, Michael D. "A computer simulation of processor scheduling in UNIX 4.2BSD /." Online version of thesis, 1987. http://hdl.handle.net/1850/10295.

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Hanson, John Douglas. "UGURU : a natural language Unix consultant /." Online version of thesis, 1987. http://hdl.handle.net/1850/10133.

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Bricault, Gary S. "GSD : an interactive window-oriented debugger for the AT & T UNIX-PC /." Online version of thesis, 1989. http://hdl.handle.net/1850/10549.

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Tollefson, Bradley A. "The J-shell command language interpreter." Virtual Press, 1985. http://liblink.bsu.edu/uhtbin/catkey/506686.

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A command language interpreter (CLI) translates commands entered by the user into system actions. The shell is a specific type of CLI that was originally designed and used with UNIX operating systems.The author proposes to design and implement a shell-like CLI on top of the VMS operating system. The shell will enhance VMS features by providing an easier to use syntax and by providing features that are not currently available through VMS. These features include piping facilities and the ability to enter and/or reference multiple commands from a single command line. A language reference manual is provided with the J-shell. This manual explains the features and commands of the J-shell.

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McCanna, Frank. "The task distribution preprocessor (TDP) /." Online version of thesis, 1989. http://hdl.handle.net/1850/10584.

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Furht, B., D. Gluch, J. Parker, P. Matthews, and D. Joseph. "THE REAL/STAR 2000: A HIGH PERFORMANCE MULTIPROCESSOR COMPUTER FOR TELEMETRY APPLICATIONS." International Foundation for Telemetering, 1991. http://hdl.handle.net/10150/612922.

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International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, Nevada
In this paper we describe the design of the REAL/STAR 2000 system, a highperformance real-time computer for telemetry applications. The REAL/STAR 2000 is a symmetric, tightly-coupled multiprocessor, optimized for real-time processing. The system provides a high level of scalability and flexibility by supporting three configurations: single, dual, and quad processor configurations, based on Motorola 88100 RISC processors. The system runs the multiprocessor REAL/IX operating system, a real-time implementation of the AT&T UNIX System V. It compiles with BCS and OCS standards, meets the POSIX 1003.1 standard, and has the current functionality of the emerging POSIX 1003.4 real-time standard. The REAL/STAR 2000 promotes an open system approach to real-time computing by supporting major industry standards. Benchmark results are also presented in the paper.

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Gibson, William A. "Implications of Using Computer-Based Training with the AN/SQQ-89(v) Sonar System: Operating and Support Costs." Thesis, Monterey, California. Naval Postgraduate School, 2012. http://hdl.handle.net/10945/7348.

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The U.S. Navy transitioned to Computer-Based Training (CBT) in A and C schools in 2003 after a 2001 Revolution in Training report claimed that the Navy would realize savings in cost and training time without negatively affecting the quality of sailors arriving to the Fleet. This thesis analyzes Operating and Support (O and S) cost data for the AN/SQQ-89(v) sonar system to determine whether the transition to CBT contributed to increased Fleet maintenance costs. Determining how actions to change one aspect of a system affects other areas of the system will provide insight for future decisions affecting O and S cost, system life cycles, and Fleet material readiness.

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Procházka, Boris. "Útoky na operační systém Linux v teorii a praxi." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237139.

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This master's thesis deals with Linux kernel security from the attacker's point of view. It maps methods and techniques of disguising the computing resources used by today's IT pirates. The thesis presents a unique method of attack directed on the system call interface and implemented in the form of two tools (rootkits). The thesis consists of a theoretical and a practical part. Emphasis is placed especially on the practical part, which manifests the presented information in the form of experiments and shows its use in real life. Readers are systematically guided as far as the creation of a unique rootkit, which is capable of infiltrating the Linux kernel by a newly discovered method -- even without support of loadable modules. A part of the thesis focuses on the issue of detecting the discussed attacks and on effective defence against them.

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Books on the topic "UNIX System V (Computer operating system)"

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Skyer, Susannah. SCO UNIX operating system tutorial. Englewood Cliffs, N.J: PTR Prentice Hall, 1993.

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Rago, Stephen A. UNIX System V network programming. Reading, Mass: Addison-Wesley, 1993.

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Stewart, Marty C. Interactive UNIX operating system: A guide for system administrators. Mountain View, Calif: SunSoft, 1995.

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Interactive UNIX operating system: A guide for system administrators. Hemel Hempstead: Prentice-Hall, 1995.

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UNIX System V system calls: Programmer's rapid reference. New York: Van Nostrand Reinhold, 1992.

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Peterson, Baird. UNIX system V system calls: Programmers' rapid reference. New York: Van Nostrand Reinhold, 1992.

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G, Sobell Mark, ed. UNIX System V: A practical guide. 3rd ed. Redwood City, Calif: Benjamin/Cummings Pub. Co., 1995.

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Browning, Sally A. UNIX System V print service administration. Englewood Cliffs, N.J: PTR Prentice Hall, 1993.

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Silverberg, Israel. Building UNIX System V software. Englewood Cliffs, N.J: PTR Prentice Hall, 1994.

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Gilly, Daniel. Unix in a nutshell: System V edition. 2nd ed. Sebastopol, CA: O'Reilly & Associates, 1994.

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Book chapters on the topic "UNIX System V (Computer operating system)"

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Liu, Yukun, Yong Yue, and Liwei Guo. "UNIX in Internet and Computer Networking." In UNIX Operating System, 315–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20432-6_11.

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Furht, Borko, Dan Grostick, David Gluch, Guy Rabbat, John Parker, and Meg McRoberts. "Concept of a Fully Preemptive UNIX Operating System." In The Kluwer International Series in Engineering and Computer Science, 49–111. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3978-0_3.

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Yao, Hong, and Yong-xing Wu. "A Research about the Application of Information Technology in the Precision Agriculture: Taking the Operating System of Shanghai Agriculture Economy as an Example." In Computer and Computing Technologies in Agriculture V, 215–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27278-3_23.

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Bevington, Dickon, Peter Fuggle, Liz Cracknell, and Peter Fonagy. "There is no such thing as a standard AMBIT team." In Adaptive Mentalization-Based Integrative Treatment, 327–50. Oxford University Press, 2017. http://dx.doi.org/10.1093/med-psych/9780198718673.003.0009.

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The chapter offers accounts by seven different teams trained and working in AMBIT-influenced ways, illustrating a variety of settings, the ways in which AMBIT has helped to improve their practice, and the challenges they faced. The chapter starts with an analogy comparing AMBIT with the operating system of a computer, which may run multiple different types of programs to address specific issues. The seven teams are: (i) an intensive CAMHS adolescent outreach service in London, designed to reduce inpatient admissions, (ii) a Tier 4 specialist adolescent inpatient unit in East Anglia, managing high risk/highly challenging behaviors, (iii) a voluntary sector outreach team working in London with highly excluded and gang-related young people, (iv) a therapeutic residential community for children with severe disturbance in the USA, (v) an intensive CAMHS community treatment service in Scotland, (vi) a service for young people on the edge of care in London, and (vii) a young people’s substance use service in a mixed urban/rural setting in the UK.

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Baker, Jason D. "Open Source Survey Software." In Software Applications, 82–84. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-060-8.ch008.

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One of the significant advances in software design afforded by the Internet has been the open source movement, an effort to collaboratively create software and make it widely and freely available to the online community. Although the open source movement started with Unix-like computer operating systems, it has expanded to include a wide variety of software programs, including tools to publish and analyze online surveys. This chapter introduces the open source movement, and then profiles three leading open source survey programs: php Easy Survey Package (phpESP), PHP Surveyor, and the Moodle course management system.

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Baker, J. "Open Source Survey Software." In Handbook of Research on Electronic Surveys and Measurements, 273–75. IGI Global, 2007. http://dx.doi.org/10.4018/978-1-59140-792-8.ch030.

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One of the significant advances in software design afforded by the internet has been the open source movement, an effort to collaboratively create software and make it widely and freely available to the online community. Although the open source movement started with Unix-like computer operating systems, it has expanded to include a wide variety of software programs, including tools to publish and analyze online surveys. This article introduces the open source movement and then profiles three leading open source survey programs: php Easy Survey Package (phpESP), PHP Surveyor, and the Moodle course management system.

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Keats, Jonathon. "Copyleft." In Virtual Words. Oxford University Press, 2010. http://dx.doi.org/10.1093/oso/9780195398540.003.0017.

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Developing an open-source alternative to the UNIX operating system in the early 1980s, the master hacker Richard Stallman faced a dilemma: if he put his new GNU software in the public domain, people could copyright their improved versions, undermining the open-source cycle by taking away the freedoms he’d granted. So Stallman copyrighted GNU himself, and distributed it, at no cost, under a license that arguably was to have greater impact on the future of computing than even the software he was striving to protect. The GNU Emacs General Public License was the founding document of the copyleft. The word copyleft predated Stallman’s innovation by at least a couple of decades. It had been used jestingly, together with the phrase “All Rights Reversed,” in lieu of the standard copyright notice on the Principia Discordia, an absurdist countercultural religious doctrine published in the 1960s. And in the 1970s the People’s Computer Company provocatively designated Tiny BASIC, an early experiment in open-source software, “Copyleft—All Wrongs Reserved.” Either of these may have indirectly inspired Stallman’s phrasing. (He first encountered the word copyleft as a humorous slogan stamped on a letter from his fellow hacker Don Hopkins.) Stallman’s genius was to realize this vague countercultural ideal in a way that was legally enforceable. That Stallman was the one to do so, and the Discordians weren’t, makes sense when one considers his method. His license stipulated that GNU software was free to distribute, and that any aspect of it could be freely modified except the license, which would mandatorily carry over to any future version, ad infinitum, ensuring that GNU software would always be free to download and improve. “The license agreements of most software companies keep you at the mercy of those companies,” Stallman wrote in the didactic preamble to his contract. “By contrast, our general public license is intended to give everyone the right to share GNU Emacs. To make sure that you get the rights we want you to have, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights.” Freedom was paradoxically made compulsory.

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Conference papers on the topic "UNIX System V (Computer operating system)"

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Phuong, Guy, Sylvester Abanteriba, and Paul Haley. "Compressor Volute Design System: Part II — New Volute Design System Approach." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31253.

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Volutes are widely used in industrial process, refrigeration system, small gas turbines and gas pipeline centrifugal compressors as the transition from the impeller-diffuser to the pipings, because of their simple structure, ease of production and wide operating range. This paper illustrates a new design tool that incorporates a new volute design system that integrates and automates geometry generation, grid generation and aerodynamic analysis. In optimizing the available technology in terms of grid generation, CFD, and computer graphics, the program will utilize existing technology used by industry to generate a powerful volute design tool. The design tool is programmed in a way that integrates the features and methods a designer would use for volute design. This is fundamentally by means of geometrical constraints and/or functional relationships. Grids can be generated in minutes accommodating geometrical changes thus reducing the bottlenecks associated with geometry/grid generation for CFD applications. Prior to most CFD analysis work, a structured grid must be produced ensuring high quality such that convergence is assured and the time to convergence of the solution is minimized. However, there are usually only a few people that have the required skills to produce the geometry and generate a high quality structured grid. In essence, the tool provides a sidestep around both the geometry generation and the grid generation process. It automates the process such that anybody can produce a high quality grid from the geometry and move straight to the CFD component of the work and hence can incorporate CFD as part of the design process. The volute design tool will enable the user to generate a family of volutes and display 2D volute cross sections and 3D solid models of the scroll, diffuser inlet, discharge conic, and connecting channel. Separate interfaces will be written to accommodate the different operating systems. The geometry generation will be written in windows however, a separate interface will be written to produce the grid being compatible in NT, Unix, and Linux platforms.

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William Mezger, Benjamin, Fabricio Bortoluzzi, Cesar Albenes Zeferino, Paulo Roberto Oliveira Valim, and Douglas Rossi Melo. "A Basic Microkernel for the RISC-V Instruction Set Architecture." In Computer on the Beach. São José: Universidade do Vale do Itajaí, 2021. http://dx.doi.org/10.14210/cotb.v12.p057-063.

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ABSTRACTComputer processors provide an abstract model known as theinstruction set architecture, which serves as an interface betweenthe available hardware and the software. Application developersneed to communicate with these types of hardware, and having tolearn each computer specification is difficult and time-consuming.Operating systems provide an abstraction towards the availablecomputer hardware and user software. They manage computerresources to enable application programmers to communicate withthe available hardware. This work introduces an academic-orientedoperating system for the RISC-V architecture, a de facto instructionset architecture standard, and compares the solution with othersmall operating systems using the same architecture. As the maincontribution, this work provides an extensible operating system tointroduce students to operating system development.

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Hanada, Satoshi, Koji Ito, and Kenji Mashio. "US-APWR Human System Interface System Verification and Validation Program for Digital I&C Design." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29928.

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The US-APWR, currently under Design Certification review by the U.S. Nuclear Regulatory Commission, is a four loop evolutionary pressurized water reactor with a four train active safety system applied by Mitsubishi Heavy Industries. The digital Instrumentation and Control (I&C) System and Human Systems Interface (HSI) system are to be applied to the US-APWR. This design is currently being applied to the latest Japanese PWR plant and to nuclear power plant I&C modernization program in Japan. The US-APWR digital I&C and HSI system (HSIS) utilizes computerized systems, including computer-based procedures and alarm prioritization, relying principally on an HSIS with soft controls, console based visual display units (VDUs) and a large, heads up, overview display panel. Conventional hard-wired controls are limited to system level manual actions and a Diverse Actuation System (DAS). The overall design philosophy of the US-APWR is based on the concept that operator performance will be enhanced through the integration of safety and non-safety display and control systems in a robust digital environment. This philosophy is augmented, for diversity, by the application of independent safety soft displays and controls. In addition, non-digital diverse automatic and manual actuation system is introduced. As with all the advanced designs, the digital systems open as many questions as they answer. To address these new questions, for an eight week period during the months of July and August 2008, an extensive verification and validation (V&V) program was completed with the objective of assessing US operators’ performance in this digital design environment. (Robert E. Hall et al., 2008, “US-APWR Human Systems Interface System V&V Results: Impact on Digital I&C Design”, 17th International Conference on Nuclear Engineering, ICONE17-75176) [1] Over this time period, U.S. operating crews were subjected to exercise in Mitsubishi dynamic simulator. To follow up above mentioned V&V activities, additional test during the months of this spring in 2009 has been carried out to resolve human engineering discrepancies (HEDs) induced from the previous evaluation and the participants’ comments and performance. Subjective and objective data were collected on each crew for each scenario and an extensive convergent measures analysis was performed, resulting in the identification of both specific design as well as generic conclusions. This paper discusses the digital HSIS of the US-APWR design, the V&V program data collection and analysis, and the study results related to the ongoing discussion of the impacts of digital systems on human performance, such as workload, navigation, situation awareness, operator training and licensing.

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Yao, Albert W. L., and Sheng-Jen Hsieh. "A Virtual Factory Planning and Estimation System for Engineering and Education." In ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/detc2008-49215.

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Virtual manufacturing (VM) is an emerging concept in which real manufacturing operations are simulated using computer models. In this study, we developed a virtual flexible manufacturing system (V-FMS) using virtual reality (VR) technology at National Kaohsiung First University of Science and Technology (NKFUST), Taiwan. Technologies employed include EON Studio virtual reality software, Visual Basic (VB) programming, scheduling and production management methods, and numerical control (NC) interpretation. This integrated system provides operating simulation, factory planning, scheduling, and performance estimation functions. It can also serve as a safe, relevant, and cost-effective tool for education and training.

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Kravárik, Kamil, Vladimír Míchal, and Peter Menyhardt. "Technologies Used for D&D of the A-1 NPP in Slovakia and Their Comparison With Advanced Worldwide Approaches." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1279.

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Abstract This paper deals with technologies used for decommissioning and decontamination of the A-1 Nuclear Power Plant in Slovakia and their comparison with advanced worldwide approaches. Present status and main results in the field of D&D of this first Czechoslovak NPP A-1 at Jaslovské Bohunice are described. NPP A-1 has one unit with reactor cooled by CO2 and moderated by heavy water. Plant was in operation from 1972 to 1977 and its final shutdown and closure were done due to relatively serious accident. The A-1 NPP Decommissioning Project – I. phase is performed at the present time and represents the most important project of NPP decommissioning in Central Europe. The main goal of the project is to achieve radiologically safe status of the NPP. It includes following activities: • conditioning, storage and disposal of liquid radioactive waste, solid and metallic radioactive waste, sludge and sorbents, • development, manufacture and verification of advanced methodologies and technologies for D&D of nuclear facilities, • decontamination of specified equipment and structures to reduce free activity, • technical support and preparation of following phases within the A-1 NPP overall decommissioning process. The project should give the complex solution of problems related to decommissioning and decontamination of NPPs in Slovakia. Verified methodology and technology should be used as a generic approach for decommissioning of the V-1, V-2 (Jaslovské Bohunice) and Mochovce Nuclear Power Plants as well as the other European NPPs with WWER reactors. Significant part of paper deals with following issues within D&D of the A-1 NPP: • computer aided technologies, • decontamination, • dismantling, demolishing and remote handling manipulators, • dosimetry measurements within D&D, • radioactive waste management. This paper also includes basic comparison with advanced worldwide approaches to decommissioning and decontamination mainly in USA, Japan and West Europe and the recommendations are done when it is possible. The comparison shows that trends in the field of D&D in the Slovak Republic are compatible and comparable with the most significant world trends. It is noted that some sorts of D&D technologies like for example telerobotic systems developed in the world are at the relatively higher technical level. Decommissioning technologies in Slovakia should be permanently improved on the base of experiences from home and abroad industry and from the real operation. It is supposed that after short time could be achieved technical level comparable with the best D&D robots and manipulators. A basic strategy of NPP decommissioning in the Slovak Republic is regulated by standards, which are in accordance with recommendations of international bodies like the International Atomic Energy Agency, European Commission, U.S. Nuclear Regulatory Commission, OECD Nuclear Energy Agency etc. In the field of NPP D&D the Slovak Republic co-operates with many international organizations and also with main active countries in D&D like Germany, France, Belgium, Great Britain, USA, Japan, Russian Federation, Hungary, Poland and Czech Republic. Intensive international co-operation at all levels has already been established at the present time.

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Ratajeski, Roy. "New Generation of State Test House Equipment." In ASME 1994 Citrus Engineering Conference. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/cec1994-4001.

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The new generation State Test House Brix/Acid test system, is a bold integration of open platform, personal computer and process controller instrumentation and software sub-systems designed to maximize the efficiency and utilization of existing automatic fruit analyzer hardware. The new equipment provides cost-effective, state-of-the-art hardware connectivity and software programmability. The new generation of test house equipment is a recombination of basic industry approved automatic fruit analysis, test hardware and procedures. The scope of modernization and renovation included system rewiring, incorporation of a programmable controller, a new test computer, UNIX operating system, supervisory control and data acquisition (SCADA) software, a fourth generation relational data base, communications system, and a central office host computer. A new environmental systems enclosure, new weight controllers, sample scale, Super VGA color monitor, pH and temperature sensing instrumentation, multi-form printers, and 9600 baud modems were also furnished. The method of testing for Brix and acid remained intact. Paper published with permission.

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Hall, Robert E., James Easter, Emilie Roth, Leonard Kaban, Kenji Mashio, Kunio Yugami, Koichi Takahashi, and Timothy Clouser. "US-APWR Human Systems Interface System Verification and Validation Results: Impact on Digital I&C Design." In 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75176.

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The US-APWR, currently under Design Certification Review by the US Nuclear Regulatory Commission, is a four-loop evolutionary pressurized water reactor with a four-train active safety system by Mitsubishi Heavy Industries. The Instrumentation and Control (I&C) System and Human Systems Interface (HSI) platform applied to the US-APWR is provided by Mitsubishi Electric Corporation. This design is currently being applied to the latest Japanese PWR plant under construction and to the nuclear power plant I&C modernization program in Japan. The US-APWR’s fully digital I&C system and HSI platform utilizes computerized systems, including computer based procedures and alarm prioritization, relying principally on an HSI system with soft controls, console based video display units and a large, heads up, overview display panel. Conventional hard controls are limited to system level manual actions and a Diverse Actuation System. The overall design philosophy of the US-APWR is based on the concept that operator performance will be enhanced through the integration of safety and non-safety display and control systems in a robust digital environment. This philosophy is augmented, for diversity, by the application of independent safety-only soft displays and controls. As with all the advanced designs, the digital systems open as many questions as they answer. To address these new questions, for an eight-week period during the months of July and August 2008, an extensive verification and validation program was completed with the objective of assessing US operators’ performance in this digital design environment. Over this time period, eight operating crews were subjected to a four-day exercise in which seven scenarios were run on Mitsubishi’s dynamic simulator. In all, twenty-two US-licensed operators and senior operators took part in the program. Additionally, a PC verification software package was developed to independently evaluate video display screen designs. Subjective and objective data were collected on each crew for each scenario and an extensive convergent measures analysis was performed, resulting in the identification of both specific design as well as generic conclusions. This paper discusses the USAPWR design, the V&V program data collection and analysis, and the study results related to the ongoing discussion of the impacts of digital systems on human performance, such as workload, navigation, situation awareness, operator training and licensing.

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Zhao, M., and N. Tailor. "Development of a Test Facility and Its Application for Validation and Reliability Testing of Safety-Critical Software." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29958.

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This paper describes a versatile test facility developed by AECL for validation and reliability (V&R) testing of safety-critical software used in the process trip computers for CANDU reactors. It describes the hardware and software aspects of the test facility. The test hardware consists of a test rig with a test computer used for executing the test software and a process trip computer emulator. The test software is comprised of an operating system, a test interpreter, a test oracle, and a man-machine interface. This paper also discusses the application of the test facility in V&R testing of the process trip computer, how test scripts are prepared and automatically run on the test computer, and how test results are automatically generated by the test computer, thus eliminating potential human errors. The test scripts, which contain specific instructions for testing, are text files written in a special AECL test language. An AECL Test Language Interpreter (ATLIN) program interprets the test scripts and translates structured English statements in the test scripts into test actions. The intuitive nature of the special AECL test language, the version controlled test scripts in text format and automatic test logging feature facilitate the preparation of test cases, which are easy to repeat, review and readily modifiable, and production of consistent results. This paper presents the concept of adding a process trip computer emulator for use in preparation of V&R testing. The process trip computer emulator is designed independently from the actual process trip computer but based on the same functional specification as for the process trip computer. The use of the process trip computer emulator allows the test scripts to be exercised before the actual process trip computers are available for V&R testing, thereby, resulting in a significant improvement to the project schedule. The test facility, with the built-in process trip computer emulator, is also a valuable training tool for the V&R staff and plant personnel.

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Xiong, Y. P., and J. T. Xing. "Dynamic Analysis and Design of LNG Tanks Considering Fluid Structure Interactions." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57937.

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Following a general description and analysis of the fundamental criteria for the dynamic design concerning dynamic stiffness, strength and environment issues, it is considered that the natural characteristics of the dynamic system and the dynamic responses of the system subject to various dynamic loads are two key critical issues in the dynamic design. Therefore, for the dynamic design of a LNG tank filled with liquid and operated on seaway, it is necessary to accurately predict its natural characteristics and dynamic response considering fluid structure interactions. To address these two key issues in the dynamic design stage, the developed computer software based on a mixed displacement–pressure finite element model to complete fluid-structure interaction analysis is introduced. An integrated internal liquid-tank-external water interaction system investigated by numerical simulations is summarised to consider the two issues involving the dynamic design of LNG tanks. The five studied cases include: i) 50% filled LNG liquid in a fixed rigid tank, ii) elastic tank only, iii) 50% filled LNG liquid-elastic tank interaction, iv) empty elastic tank-external sea water interaction and v) internally 50% filled LNG liquid-elastic tank-external sea water interaction. The calculated results are compared to reveal the coupling effects on the dynamic design of LNG tanks. To further demonstrate the effects of the natural characteristics affected by different interactions on the dynamic responses involving the dynamic strength, stiffness and vibration environment problems considered in dynamic design, the numerical simulations of the studied systems subject to regular sea wave excitations and earthquake excitations are carried out. The dynamic displacements for stiffness analysis, the dynamic stress for strength analysis and vibration level for dynamic environment analysis are presented and discussed. Guidelines provided in this paper maybe useful for dynamic designs of LNG tank operating in complex marine environments.

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Reports on the topic "UNIX System V (Computer operating system)"

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Andelis, Diana I., and William A. Gibson. The Impact of Computer-Based Training on Operating and Support Costs for the AN/SQQ-89 (v) Sonar System. Fort Belvoir, VA: Defense Technical Information Center, April 2013. http://dx.doi.org/10.21236/ada585047.

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