检索结果-内蒙古大学图书馆

Evaluation of Statistical Reliability Measures for a Program for the Limitation of Power Density in a Reactor Vessel

引用

IFAC Proceedings Volumes 1982年第7期15卷 399-402页

作者： M. Kersken B. Krzykacz Gesellschaft für Reaktorsicherheit (GRS) mbH Forschungsgelände D-8046 Garching Federal Republic of Germany

errors within an assembler program for limiting the local power density in a reactor vessel are to be identified and corrected during two test phases. According to the special features for error detection of the testing facilities, the errors are classified, and an appropriate software reliability model is applied to each error class. These models allow prediction of certain reliability parameters from the observation of the test. Depending on the model employed these parameters can be e.g. the number of remaining errors, the probability for the occurance of an error within a given time interval, the meantime between successive errors. In this contribution references are only made to the number of remaining errors.

关键词： coding errors computer debugging computer testing modelling nuclear reactors statistics

来源：评论

学校读者我要写书评

暂无评论

Closure to "Discussion of 'Comprehensive approach to verification and validation of CFD simulations - Part 1: Methodology and procedures' '' (2002, ASME J. FLUIDS ENG., 124, p. 809)

引用

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME 2002年第3期124卷 810-810页

作者： Coleman, HW Univ Alabama Dept Mech & Aerosp Engn Prop Res Ctr Huntsville AL 35899 USA

(1): I do not understand how the word “simulation” in the title can be misinterpreted as “code” or “software.” (2) and (3): I believe the confusion arises from his use of the definition of uncertainty as “A potential deficiency in any phase of the modeling process that is due to lack of knowledge” (which does not quantify a range within which truth lies with a specified degree of confidence) as opposed to the concepts and definitions used in current experimental uncertainty analysis 1 (which do quantify such a range). The ranges D ± U D and S ± U S both contain (with 95% confidence) the truth T, which is independent of experiment or simulation. The assumption (also made in Oberkampf and Trucano, 2000) that D is “an individual experimental measurement” is inaccurate. The experimental result is D , and U D is the uncertainty...

关键词： errors computational fluid dynamics modelling Simulation Fluids Flow simulation Modeling Computational fluid dynamics coding errors Numerical analysis boundary-value problems Boundary-value problems numerical analysis Numerical stability numerical stability flow simulation

来源：评论

学校读者我要写书评

暂无评论

ERROR-RECOVERY CODES

引用

DR DOBBS JOURNAL 1994年第15期19卷 44-&页

作者： DECANNE, B BARCO NV DIV BROADCAST & CABLEKORTRIJKBELGIUM

Bose-Chaudhuri-Hocquenghem (BCH) and Reed-Solomon (RS) are two powerful approaches to error-control coding that ensure error-free data communications. These two codes which maximize error correctability can be decoded by using the Massey-Berlekamp algorithm. Even though these codes have just been recently realized as far as application in high-speed digital transmission is concerned due to complex decoding involved, they undoubtedly would be useful as a building block for the construction of error-resilient and safe file systems.

关键词： coding errors

来源：评论

学校读者我要写书评

暂无评论

Software Fault-Tolerance by Design Diversity Dedix: A Tool for Experiments

引用

IFAC Proceedings Volumes 1985年第12期18卷 173-178页

作者： A. Avižienis P. Gunningberg J.P.J. Kelly R.T. Lyu L. Strigini P.J. Traverse K.S. Tso U. Voges UCLA Computer Science Department University of California Los Angles CA 90024 USA

A large number of computing systems require very high levels of reliability, availability, or safety. A fault-avoidance approach is not practical in many eases, and is costly and difficult for software, if not impossible. One way of reducing tiie effects of an error introduced during the design of a program is to use multiple versions of the program, independently designed from a common specification. If these versions are designed by independent programming teams, it is to be expected that a fault in one version will not have the same behavior as any fault in the other versions. Since the errors in the output of the versions will be different and uncorrclated, it is pos-sible to run the versions concurrently, cross-check their results at prespecified points, and mask errors. A Design Diversity experiments (DEDIX) testbed has been implemented at UCLA to study the influence of common mode errors which can result in a failure of the entire system. The layered design of DEDDC and its decision algorithm are described. The usage of the system and its application in an ongoing experiment are explained.

关键词： Computer Architecture Reliability Theory Distributed Parameters Systems coding errors Fault Tolerance

来源：评论

学校读者我要写书评

暂无评论

Software Quality and Productivity – Is There a Choice? – Does There Have To Be?

引用

IFAC Proceedings Volumes 1990年第5期23卷 35-39页

作者： C.R. Hall Allied-Signal Aerospace Company Bendix Engine Controls Division South Bend Indiana USA

Bendix Engine Controls Division delivers a wide variety of aviation-related software, both for military applications as well as for commercial uses. Much of this software is utilized in propulsion control systems for aircraft engines, and most involve computation functions which require the extensive use and control of embedded software. This paper will provide analyses of past and current software projects from the viewpoint of Software Quality Assurance (SQA). It will address not only the administering and enforcement of SQA policies, but also will provide workable solutions to the SQA-related problems that have surfaced. In addition, it steps through the traditional software development cycle, and pinpoints potential problem areas which may be encountered during that phase.

关键词： coding coding errors computer programming computer software computer testing programming languages programming support quality control software development software engineering

来源：评论

学校读者我要写书评

暂无评论

Multihopping and decoding of error-correcting code of MFSK/FH-SSMA systems

引用

IEICE Transactions on Communications 1993年第8期E76-B卷 874-884页

作者： Mabuchi, Tetsuo Kohno, Ryuji Imai, Hideki Yokohama Natl Univ Yokohama Japan

This paper investigates a multihopping scheme for MFSK (Multilevel Frequency Shift Keying)/FH-SSMA (Frequency Hopping-Spread Spectrum Multiple Access) system. Moreover, we propose and investigate a modified decoding scheme for the coded MFSK/FH-SSMA system. In this multi-hopped MFSK/FH-SSMA system, several hopping frequencies per chip are assigned and transmitted in parallel in order to improve its frequency diversity capability for a fading channel. We theoretically analyze the performance of the multihopped MFSK/FH-SSMA system in a Rayleigh fading channel. Moreover, in the coded MFSK/FH-SSMA system, we propose a modified scheme of the error and erasure decoding of an error-correcting code. The modified decoding scheme utilizes the information of rows having the largest number of entries in the decoded time-frequency matrix. Their BER (Bit Error Rate) performance is evaluated by theoretical analysis in order to show the improvement in user capacity.

关键词： coding errors

来源：评论

学校读者我要写书评

暂无评论

Thinking Traps in Programming — A Systematic Collection of Examples

引用

IFAC Proceedings Volumes 1988年第18期21卷 95-100页

作者： T. Grams Fachhochschule Fulda Fachbereich Angewandte Informatik und Mathematik Marquardstraße 35 D–6400 Fulda FRG

The deeper causes of programming faults result from behaviour patterns fitting everyday life but not extraordinary situations. Our view of life is a bad guide in strange or new situations. Thinking traps are then likely to emerge. In this paper a system of thinking traps is given and typical programming faults are analysed and interpreted with respect to this framework. Catalogues of programming faults like this are the basis on which counter-measures can be developed.

关键词： Computer programming programming faults coding errors human factors behavioural sciences

来源：评论

学校读者我要写书评

暂无评论

Two new classes of compound-error correcting codes and their performance

引用

Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi) 1997年第1期80卷 91-103页

作者： Ono, Yukari Kasahara, Masao Mitsubishi Electric Corp Nagaokakyo Japan

The major errors that occur in a communication channel are the random error and the burst error. The codes considered in the past are mostly to correct one of those errors. The errors that occur in an actual channel, however, are not necessarily restricted to either the random or the burst error. It is obviously more general to consider the case where both types of error occur in a mixed way. This paper considers the case where the random and the burst errors occur in the same code word, and proposes the construction of the code, together with the decoding method, to enable errors to be corrected with a sufficiently high probability. The proposed code is constructed by combining the BCH code with the Fire code, which is the burst error-correcting code. Hence, the random error-correcting ability also is provided. The property that the burst error pattern can approximately be derived is utilized even if there exists a random error, and both errors can be corrected. Then, a code with a higher efficiency is given and is compared to the Reed-Solomon code. It is shown, as a result, that the coding/decoding method proposed in this paper is useful in the bursty compound-error channel.

关键词： coding errors

来源：评论

学校读者我要写书评

暂无评论

Error-controlling scheme according to the importance of individual segments of model-based coded facial images

引用

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences 1994年第8期E77-A卷 1289-1296页

作者： Suzuki, Noriko Sasaki, Taroh Kohno, Ryuji Imai, Hideki Yokohama Natl Univ Yokohama-shi Japan

This paper considers Action Unit (AU) as a segment of model-based coded facial image of human being and define the importance for each AU. According to the importance, an AU is encoded by an appropriated code among codes with different error-correcting capabilities. For encoding with different error controlling codes, three kinds of constructions to obtain unequal error protection (UEP codes are described in this paper. One of them is direct sum construction and the others are the proposed construction which are based on joint and double coding. By using these UEP codes, the proposed intelligent error-controlling scheme can protect information in segment in order to reduce semantic errors over a conventional error-controlling scheme in which information is unformly protected by an error-correcting code.

关键词： coding errors

来源：评论

学校读者我要写书评

暂无评论

Application of additive coding to reliable data storage and transmission in computer systems

Engineering Simulation

引用

Engineering Simulation 1993年第2期11卷 332-339页

作者： Gunko, V.B. Lobkov, S.N. Higher Military School of Missile Forces Commanders/Engineers Rostov-on-Don Russia

A new method of additive coding is proposed, which provides for a simpler and faster coder design than the known ones. The coders built by this method enhance tolerance of computer systems to faults in both memory loc... 详细信息

关键词： coding errors

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：