期刊文献+
共找到11,788篇文章
< 1 2 250 >
每页显示 20 50 100
Seismic effectiveness evaluation and optimized design of tie up method for securing museum collections
1
作者 Wang Meng Yan Yi +3 位作者 Yang Weiguo Liu Pei Ge Jiaqi Ma Botao 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2024年第3期741-763,共23页
To quantify the seismic effectiveness of the most commonly used fishing line tie up method for securing museum collections and optimize fixed strategies for exhibitions,shaking table tests of the seismic systems used ... To quantify the seismic effectiveness of the most commonly used fishing line tie up method for securing museum collections and optimize fixed strategies for exhibitions,shaking table tests of the seismic systems used for typical museum collection replicas have been carried out.The influence of body shape and fixed measure parameters on the seismic responses of replicas and the interaction behavior between replicas and fixed measures have been explored.Based on the results,seismic effectiveness evaluation indexes of the tie up method are proposed.Reasonable suggestions for fixed strategies are given,which provide a basis for the exhibition of delicate museum collections considering the principle of minimizing seismic responses and intervention.The analysis results show that a larger ratio of height of mass center to bottom diameter led to more intense rocking responses.Increasing the initial pretension of fishing lines was conducive to reducing the seismic responses and stress variation of the lines.Through comprehensive consideration of the interaction forces and effective securement,it is recommended to apply 20%of breaking stress as the initial pretension.For specific museum collections that cannot be effectively protected by the independent tie up method,an optimized strategy of a combination of fishing lines and fasteners is recommended. 展开更多
关键词 tie up method museum collections shaking table test seismic effectiveness optimized design
下载PDF
Optimal Design of High-Speed Partial Flow Pumps using Orthogonal Tests and Numerical Simulations
2
作者 Jiaqiong Wang Tao Yang +2 位作者 Chen Hu Yu Zhang Ling Zhou 《Fluid Dynamics & Materials Processing》 EI 2024年第6期1203-1218,共16页
To investigate the influence of structural parameters on the performances and internal flow characteristics of partial flow pumps at a low specific speed of 10000 rpm,special attention was paid to the first and second... To investigate the influence of structural parameters on the performances and internal flow characteristics of partial flow pumps at a low specific speed of 10000 rpm,special attention was paid to the first and second stage impeller guide vanes.Moreover,the impeller blade outlet width,impeller inlet diameter,blade inclination angle,and number of blades were considered for orthogonal tests.Accordingly,nine groups of design solutions were formed,and then used as a basis for the execution of numerical simulations(CFD)aimed at obtaining the efficiency values and heads for each design solution group.The influence of impeller geometric parameters on the efficiency and head was explored,and the“weight”of each factor was obtained via a range analysis.Optimal structural parameters were finally chosen on the basis of the numerical simulation results,and the performances of the optimized model were verified accordingly(yet by means of CFD).Evidence is provided that the increase in the efficiency and head of the optimized model was 12.11%and 23.5 m,respectively,compared with those of the original model. 展开更多
关键词 HIGH-SPEED partial flow pump orthogonal test optimal design numerical calculation
下载PDF
Design and Characterization of an Aerosol Test Chamber for Emergency Response Patient Contamination Control Simulation and Research
3
作者 Megan L. Steele Emily M. Spatz +4 位作者 George P. Lemmer Jacob M. Denney Jeremy M. Slagley Casey W. Cooper Robert M. Eninger 《Occupational Diseases and Environmental Medicine》 2023年第1期78-96,共19页
Contaminated or infected patients present a risk of cross-contamination for emergency responders, attending medical personnel and medical facilities as they enter a treatment facility. The controlled conditions of an ... Contaminated or infected patients present a risk of cross-contamination for emergency responders, attending medical personnel and medical facilities as they enter a treatment facility. The controlled conditions of an aerosol test chamber are required to examine factors of contamination, decontamination, and cross-contamination. This study presents the design, construction, and a method for characterizing an aerosol test chamber for a full-sized manikin on a standard North Atlantic Treaty Organization litter. The methodology combined air velocity measurements, aerosol particle counts and size distributions, and computational fluid dynamics modeling to describe the chamber’s performance in three dimensions. This detailed characterization facilitates future experimental design by predicting chamber performance for a variety of patient-focused research. 展开更多
关键词 test Chamber Characterization Aerosol Generation Exposure Chamber design Air Velocity Mapping Spatial Variability CFD Modeling Patient Decontamination
下载PDF
Optimization and Testing for PCR System of Rice by Orthogonal Design 被引量:8
4
作者 程芳艳 李春光 +5 位作者 刘永巍 孟巧霞 张景龙 宋冬明 刘华招 孟昭河 《Agricultural Science & Technology》 CAS 2010年第2期61-64,共4页
[Objective] This study was to screen the economic or stable PCR system of rice and detect the generality of the selected system in different molecular markers based on PCR.[Method] With DNA extracted from rice leaves ... [Objective] This study was to screen the economic or stable PCR system of rice and detect the generality of the selected system in different molecular markers based on PCR.[Method] With DNA extracted from rice leaves by CTAB method as the template,PCR system was optimized by L16(45)orthogonal design.[Result] Clear bands were amplified from 16 different combinations,but the amplification effects and yields had difference.The most economic and applicable system was as follows:20 ng DNA template,150 μmol/L dNT... 展开更多
关键词 RICE PCR system optimization Orthogonal design Dominant molecular markers testing
下载PDF
Optimal Design of Multiple Stresses Accelerated Life Test Plan Based on Transforming the Multiple Stresses to Single Stress 被引量:5
5
作者 GAO Liang CHEN Wenhua +2 位作者 QIAN Ping PAN Jun HE Qingchuan 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2014年第6期1125-1132,共8页
For planning optimum multiple stresses accelerated life test plans, a commonly followed guiding principle is that all parameters of the life-stress relationship should be estimated, and the number of the stress level ... For planning optimum multiple stresses accelerated life test plans, a commonly followed guiding principle is that all parameters of the life-stress relationship should be estimated, and the number of the stress level combinations must be no less than the number of parameters of the life-stress relationship. However, the general objective of an accelerated life test(ALT) is to assess thep-th quantile of the product life distribution under normal stress. For this objective,estimating all model parameters is not necessary, and this will increase the cost of test. Based on the theoretical conclusion that the stress level combinations of the optimum multiple stresses ALT plan locate on a straight line through the origin of coordinate, it is proposed that a design idea of planning the optimum multiple stresses ALT plan through transforming the problem of designing an optimum multiple stresses ALT plan to designing an optimum single stress ALT plan. Moreover, a method of planning the optimum multiple stresses ALT plan which can avoid estimating all model parameters is established. An example shows that, the proposed plan which only has two stress level combinations could achieve an accuracy no less than the traditional plan, and save the test time and cost on one stress level combination at least; when the actual product life is less than the design value, even the deviation of the model initial parameters value is up to 20%, the variance of the estimation of thep-th quantile of the proposed plan is still smaller than the traditional plans approximately 25%. A design method is provided for planning the optimum multiple stresses ALT which uses the statistical optimum degenerate test plan as the optimum multiple stresses accelerated life test plan. 展开更多
关键词 multiple stresses accelerated testing optimum design test planning
下载PDF
Low overhead design-for-testability for scan-based delay fault testing 被引量:3
6
作者 Yang Decai Chen Guangju Xie Yongle 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2007年第1期40-44,共5页
An efficient design-for-testability (DFT) technique is proposed to achieve low overhead for scan-based delay fault testing. Existing techniques for delay test such as skewed-load or broadside make the test generatio... An efficient design-for-testability (DFT) technique is proposed to achieve low overhead for scan-based delay fault testing. Existing techniques for delay test such as skewed-load or broadside make the test generation process complex and produce lower coverage for scan-based designs as compared with non-scan designs, whereas techniques such as enhanced-scan test can make the test easy but need an extra holding latch to add substantial hardware overhead. A new tri-state holding logic is presented to replace the common holding latch in enhanced-scan test to get a substantial low hardware overhead. This scheme can achieve low delay overhead by avoiding the holding latch on the critical timing scan path. What's more, this method can also keep the state and signal activity in the combinational circuit from the scan during data scan-in operation to reduce the power dissipation. Experiment results on a set of ISCAS89 benchmarks show the efficiency of the proposed scheme. 展开更多
关键词 Delay fault testing design for testability Enhanced scan
下载PDF
Mathematical model for abrasive suspension jet cutting based on orthogonal test design 被引量:5
7
作者 胡贵华 朱文华 +5 位作者 蔡红霞 徐翀 柏余杰 程俊 苑进 俞涛 《Journal of Shanghai University(English Edition)》 CAS 2009年第1期37-44,共8页
This paper describes the application of orthogonal test design coupled with non-linear regression analysis to optimize abrasive suspension jet (AS J) cutting process and construct its cutting model. Orthogonal test ... This paper describes the application of orthogonal test design coupled with non-linear regression analysis to optimize abrasive suspension jet (AS J) cutting process and construct its cutting model. Orthogonal test design is applied to cutting stainless steel. Through range analysis on experiment results, the optimal process conditions for the cutting depth and the kerr ratio of the bottom width to the top width can be determined. In addition, the analysis of ranges and variances are all employed to identify various factors: traverse rate, working pressure, nozzle diameter, standoff distance which denote the importance order of the cutting parameters affecting cutting depth and the kerf ratio of the bottom width to the top width. ~rthermore, non-linear regression analysis is used to establish the mathematical models of the cutting parameters based on the cutting depth and the kerr ratio. Finally, the verification experiments of cutting parameters' effect on cutting performance, which show that optimized cutting parameters and cutting model can significantly improve the prediction of the cutting ability and quality of ASJ. 展开更多
关键词 abrasive suspension jet (AS J) orthogonal test design cutting depth the kerf ratio of the bottom width to the top width non-linear regression analysis verification experiment
下载PDF
An isolated similarity design method for shaking table tests on reinforced slopes 被引量:1
8
作者 WANG Zhi-jia FAN Gang +1 位作者 CAO Li-cong CHANG Jin-yuan 《Journal of Mountain Science》 SCIE CSCD 2021年第9期2460-2474,共15页
Physical model test is an effective way to unveil the dynamic response of a slope under seismic condition.The similarity design is the key of physical model test.An isolated similarity design method for shaking table ... Physical model test is an effective way to unveil the dynamic response of a slope under seismic condition.The similarity design is the key of physical model test.An isolated similarity design method for shaking table tests was proposed and verified in this work.In this method,the relevant physical quantities were divided into several subsystems and subcharacteristic equations for each subsystem were then established based on the Buckingham similarity theory.Large-scale shaking table tests on a reinforced slope were adopted herein to illustrate the application of the proposed isolated similarity design method.The similarity system for the studied slope was divided into four parts in the process of similarity design.The geometrical dimension L,densityρand gravity g were selected as fundamental quantities for the similarity design,and four subcharacteristic equations were established for each subsystem.The dynamic responses of the recorded acceleration and axis force show that the seismic waves propagate well in the model slope.The proposed isolated similarity design method solves the conflict between the similarity requirement for all relevant physical quantities and the difficulty of test model fabrication to satisfy all similarity relations. 展开更多
关键词 Similarity design Shaking table test SLOPE ACCELERATION Axial force
下载PDF
Development of a rapid test kit for SARS-CoV-2:an example of product design 被引量:1
9
作者 Zhanfeng Cui Hong Chang +10 位作者 Hui Wang Boon Lim Chia-Chen Hsu Yejiong Yu Huidong Jia Yun Wang Yida Zeng Mengmeng Ji Weizhi Liu Catriona Inverarity Wei E.Huang 《Bio-Design and Manufacturing》 SCIE CSCD 2020年第2期83-86,共4页
We present an example of applying'need-driven'product design principle to the development of a rapid test kit to detect SARS-COV-2(COVID-19).The tests are intended for use in the field and,longer term,for home... We present an example of applying'need-driven'product design principle to the development of a rapid test kit to detect SARS-COV-2(COVID-19).The tests are intended for use in the field and,longer term,for home use.They detect whether a subject is currently infected with the virus and is infectious.The urgent need for large numbers of tests in field setting imposes constraints such as short test time and lack of access to specialist equipment,laboratories and skilled technicians to perform the test and interpret results.To meet these needs,an antigen test based on RT-LAMP with colorimetric readout was chosen.Direct use of swab sample with no RNA extraction was explored.After extensive experimental study(reported elsewhere),a rapid test kit has been fabricated to satisfy all design criteria. 展开更多
关键词 COVID-19 ANTIGEN detection RAPID test Product design SAR-Cov-2 RT-LAMP
下载PDF
System design and validation of Queqiao-2 lunar relay communication satellite
10
作者 ZHANG Lihua XIONG Liang +11 位作者 SUN Ji CHEN Luojing XIAO Chuan ZHOU Wenyan WANG Yong LIU Wangwang GUAN Yifeng CHEN Tao YU Xiaochuan XU Jin CHEN Guohui CAO Xiaoping 《中国空间科学技术(中英文)》 CSCD 北大核心 2024年第5期23-39,共17页
In order to provide relay communication supports for future Chinese lunar exploration program,Queqiao-2 relay communication satellite was developed.Queqiao-2 can perform scientific observations with three kinds of sci... In order to provide relay communication supports for future Chinese lunar exploration program,Queqiao-2 relay communication satellite was developed.Queqiao-2 can perform scientific observations with three kinds of scientific instruments on board.The system design of Queqiao-2,including mission orbit and transfer orbit design,configuration and layout design,housekeeping and information flow design,power supply and distribution design,GNC and propulsion system design,communication links design,etc.,was accomplished through comprehensive tradeoff and evaluation on technical maturity,availability,schedule,cost,and so on.With a view to reducing development risk,both the platform and relay communication payloads were developed based on significant heritage from previous Queqiao relay satellite and other relevant spacecraft.Queqiao-2 features flexible system architecture to support multiple frequencies,modulations,data rates and software reconfigurations to meet new user requirements.Subsequent to a successful launch on March 20,2024,by means of 5 orbit maneuvers,Queqiao-2 was inserted into a highly elliptical frozen mission orbit around the moon with a 24h period on schedule.Following on-orbit tests and calibrations,Queqiao-2 has possessed the capacity to provide reliable relay communication services to multiple lunar exploration missions,as well as the capacity to perform scientific observations.Under the support of Queqiao-2,Chang′e-6 achieved its ambitious mission goal to collect and return samples from the moon′s mysterious far side.In the meanwhile,Queqiao-2 has also paved the way for the following Chinese lunar exploration missions including Chang′e-7 and Chang′e-8.The design life time of Queqiao-2 is more than 8 years.Benefit from flexibility and extensibility of relay communication system design,it is convenient to provide relay communication services for future lunar exploration missions of both China and other countries.In addition,innovative scientific observations would be performed during the period that no relay communication task is arranged.The system design of Queqiao-2 reflects the development philosophy of technical innovations and inheritance integration.Based on highly flexible and extensible system architecture,multiple and concurrent relay communication mission requirements can be met.It can provide strong supports for future lunar exploration missions.Successful launching,orbit entering and on-orbit tests of Queqiao-2 verified the correct design principle and versatility.By means of Queqiao-2,more innovative scientific outcomes are anticipated and lunar exploration activities can be facilitated. 展开更多
关键词 lunar explorations relay communication Queqiao system design test VALIDATION
下载PDF
一种数字后端设计DFT的方法分析
11
作者 叶琳娜 高大伟 +1 位作者 熊瑛 易丹 《集成电路应用》 2024年第3期4-5,共2页
阐述可测试性设计(DFT)的特点。分析一种ASIC设计中DFT的方法,包括定义扫描链、定义测试信号、提取扫描链、写入测试协议,使设计人员可以优化最终芯片制造的功耗、面积和时序。
关键词 集成电路设计 数字后端 dft ASIC设计
下载PDF
Exponential System Reliability Test Design Based on Information Fusion
12
作者 刘琦 张安扬 《Journal of Donghua University(English Edition)》 EI CAS 2016年第2期323-326,共4页
By analyzing the shortage of reliability test design and thinking over the producer's risk and consumer's risk, the information fusion technology is used to set up a reliability test design model( RTDM). By an... By analyzing the shortage of reliability test design and thinking over the producer's risk and consumer's risk, the information fusion technology is used to set up a reliability test design model( RTDM). By analyzing the demands and constraint conditions of the RTDM and with applications of Bayesian approach and Monte Carlo method( MCM),this paper puts forward the exponential distributed subsystems and the information fusion technology among them. According to the posteriori risk criteria,formulas of producer's risk and consumer's risk were also inferred,and with the help of Matlab software,selection of the optimum test plan was solved. Finally,validity of the model had been proved by a test of series parallel system. 展开更多
关键词 reliability test design information fusion reliability test design model(RTDM) Bayesian approach Monte Carlo method(MCM)
下载PDF
Empirical Approach for Planning and Designing Constant Stress Accelerated Life Tests
13
作者 蒋仁言 龙旭 《Journal of Donghua University(English Edition)》 EI CAS 2015年第6期1025-1028,共4页
Accelerated life testing(ALT)has been widely used to obtain information about the product's life characteristics at normal conditions in a relatively short period of time.Two key issues with ALT are test design an... Accelerated life testing(ALT)has been widely used to obtain information about the product's life characteristics at normal conditions in a relatively short period of time.Two key issues with ALT are test design and data analysis.The test design of constant stress ALT was studied in this paper.The test design usually combines engineering experiences with optimization models.Such approaches are hard to be implemented by practitioners.A"pure"empirical approach was presented to address this issue.With the proposed approach,some of the decision variables are determined based on the results from the literature,some of the other variables are determined based on engineering analysis and /or judgment,and the remaining variables are determined based on the empirical relations developed in this paper.A real-world example is included to illustrate the appropriateness of the proposed approach. 展开更多
关键词 accelerated life testing(ALT)design constant stress stress levels test units allocation censoring type
下载PDF
An Optimal Design of Accelerated Degradation Tests Based on Degradation Performance
14
作者 Yunshun Wu 《Open Journal of Statistics》 2019年第6期686-694,共9页
This paper mainly talks about the relationship between an optimal design of accelerated degradation tests and the degradation performance. When there is a linear relationship between the parameter of distribution and ... This paper mainly talks about the relationship between an optimal design of accelerated degradation tests and the degradation performance. When there is a linear relationship between the parameter of distribution and the critical values, a special pattern of accelerated degradation tests is presented by taking the critical values as accelerated variable. And the optimal test plan is obtained by minimizing the asymptotic variance of the MLE of the parameter of distribution. Finally, a numerical example is presented to illustrate the procedures of the test plan. 展开更多
关键词 ACCELERATED DEGRADATION test CRITICAL VALUES ASYMPTOTIC Variance OPTIMAL design
下载PDF
Comparative Analysis of Group Sequential Designs Tests for Randomized Controlled Clinical Trials: A Model Study on Two-Sided Tests for Comparing Two Treatments
15
作者 Mehmet Ali Sungur Emine Arzu Kanik 《Open Journal of Statistics》 2012年第1期60-72,共13页
Clinical trials are usually long term studies and it seems impossible to reach all required subjects at the same time. Performing interim analyses and monitoring results may provide early termination of trial after ob... Clinical trials are usually long term studies and it seems impossible to reach all required subjects at the same time. Performing interim analyses and monitoring results may provide early termination of trial after obtaining significant results. The aim of this study is comparing group sequential tests in respect to advantage of sample size reduction and early termination. In this study, 4 test types used in group sequential designs were compared with fixed sample size design test and each other. Comparisons were done according to two-sided tests for comparing two treatments. In this sense, 1080 models were performed. In models, 2 different Type I errors, 2 different powers, 5 different analysis groups, 6 different effect sizes and 9 different variances selections were considered. All test types increased the maximum sample size in different manner, compared with fixed sample size design. Each test had different critical values to reject H0 hypothesis, at the same type I error rate and number of analyses conditions. Selection of test type used in group sequential designs depends on a few characteristics, as reducing sample size, early termination and detecting minimal effect size. Test performance is highly related with selected Type I error rate, power and number of analyses. In addition to these statistical characteristics, researchers should decide test type with respect to other trial conditions as the issue of trial, reaching subjects easy or not and importance of early termination. 展开更多
关键词 GROUP SEQUENTIAL designS GROUP SEQUENTIAL test Types Interim Analysis Monitoring
下载PDF
A DFT Method for Single-Control Testability of RTL Data Paths for BIST
16
作者 Toshimitsu Masuzawa Minoru lzutsu +1 位作者 Hiroki Wada Hideo Fujiwara 《湖南大学学报(自然科学版)》 EI CAS CSCD 2000年第S2期52-60,共9页
This paper presents a new BIST method for RTL data paths based on single-control testability, a new concept of testability. The BIST method adopts hierarchical test. Test pattern generators are placed only on primary ... This paper presents a new BIST method for RTL data paths based on single-control testability, a new concept of testability. The BIST method adopts hierarchical test. Test pattern generators are placed only on primary inputs and test patterns are propagated to and fed into each module. Test responses are similarly propagated to response analyzers placed only on primary outputs. For the propagation of test patterns and test responses paths existing in the data path are utilized. The DFT method for the single-control testability is also proposed. The advantages of the proposed method are high fault coverage (for single Stuck-at faults), low hardware overhead and capability of at-speed test. Moreover, test patterns generated by test pattern generators can be fed into each module at consecutive system clocks, and thus, the BIST can also detect some faults of other fault models (e.g., transition faults and delay faults) that require consecutive application of test patterns at speed of system clock. 展开更多
关键词 built-in self-test design for testability RTL data path hierarchical test
下载PDF
基于组合DFT方法的ECSP配比设计策略研究
17
作者 李门 李天鹏 高欣宝 《固体火箭技术》 CAS CSCD 北大核心 2024年第4期557-564,共8页
为提高电控固体推进剂(ECSP)配比设计中能量特性参数计算效率以及解决传统配比设计策略未考虑组分含量同步变化的问题,提出了一种基于revDSD-PBEP86-D3(BJ)泛函的组合密度泛函理论(DFT)方法(co-revDSD),将几何优化、振动分析、单点能计... 为提高电控固体推进剂(ECSP)配比设计中能量特性参数计算效率以及解决传统配比设计策略未考虑组分含量同步变化的问题,提出了一种基于revDSD-PBEP86-D3(BJ)泛函的组合密度泛函理论(DFT)方法(co-revDSD),将几何优化、振动分析、单点能计算、单点能外推等步骤组合,并结合非迭代三激发电子相关耦合簇(CCSD(T))方法进行了校正,对比了部分有机物生成焓的实验值和co-revDSD方法的计算值;建立了基于评价指数的配比设计策略,基于co-revDSD方法计算了ECSP组分生成焓,绘制了考虑ECSP不同组分含量同步变化时的能量特性参数云图。结果表明,co-revDSD方法可以高效地计算生成焓,部分有机物的实验值和co-revDSD方法的计算值误差在-5%~5%之间;硝酸羟胺(HAN)的生成焓-250.031 kJ·mol^(-1),聚乙烯醇(PVA)的生成焓与重复单元数成正比,比例系数为-219.117;氧化剂/燃料(O/F)比和Al含量的增大在一定范围内均会造成ECSP的能量特性参数的增大,增大Al含量和O/F比可在比冲合适的条件下尽可能降低燃烧温度及燃气平均相对分子质量。 展开更多
关键词 电控固体推进剂 聚乙烯醇 硝酸羟胺 配比设计 密度泛函理论 生成焓 能量特性
下载PDF
Design and Test of Multibus Adapter System on a Chip for Fault Tolerant Computer Systems
18
作者 Yang Yinghua, Huang Chang, Meng Biao, Zhang Xing, Yu Shan 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 1992年第4期5-6,2,共3页
In order to improve the system reliability and performance and to reduce the system cost, volume and weight, we have designed, fabricated and tested the multibus adapter system of a trimodular redundant fault tolerant... In order to improve the system reliability and performance and to reduce the system cost, volume and weight, we have designed, fabricated and tested the multibus adapter system of a trimodular redundant fault tolerant computer system on a single chip of 5000 gate CMOS gate array. The design, fabrication and test of this single chip system will be discussed.. 展开更多
关键词 BUS design and test of Multibus Adapter System on a Chip for Fault Tolerant Computer Systems CHIP test
下载PDF
Adding Pseudo-Random Test Sequence Generator in the Test Simulator for DFT Approach
19
作者 Afaq Ahmad Dawood Al-Abri Sayyid Samir AI-Busaidi 《Computer Technology and Application》 2012年第7期463-470,共8页
This paper presents modified version of a realistic test tool suitable to Design For Testability (DFT) and Built-ln Self Test (BIST) environments. A comprehensive tool is developed in the form of a test simulator.... This paper presents modified version of a realistic test tool suitable to Design For Testability (DFT) and Built-ln Self Test (BIST) environments. A comprehensive tool is developed in the form of a test simulator. The simulator is capable of providing a required goal of test for the Circuit Under Test (CUT). The simulator uses the approach of fault diagnostics with fault grading procedures to provide the optimum tests. The current version of the simulator embeds features of exhaustive and pseudo-random test generation schemes along with the search solutions of cost effective test goals. The simulator provides facilities of realizing all possible pseudo-random sequence generators with all possible combinations of seeds. The tool is developed on a common Personal Computer (PC) platform and hence no special software is required. Thereby, it is a low cost tool hence economical. The tool is very much suitable for determining realistic test sequences for a targeted goal of testing for any CUT. The developed tool incorporates flexible Graphical User Interface (GUI) procedures and can be operated without any special programming skill. The tool is debugged and tested with the results of many bench mark circuits. Further, this developed tool can be utilized for educational purposes for many courses such as fault-tolerant computing, fault diagnosis, digital electronics, and safe-reliable-testable digital logic designs. 展开更多
关键词 Digital system testing built-in self test design for testability test vector pseudo-random test sequence linear feedbackshift registers fault diagnosis fault collapsing realistic test fault cover iteration.
下载PDF
An Application of Paraconsistent Annotated Logic for Design Software Testing Strategies
20
作者 Marcos Ribeiro do Nascimento Luiz Alberto Vieira Dias Joao Inacio Da Silva Filho 《Journal of Software Engineering and Applications》 2014年第5期371-386,共16页
Nowadays, application model systems for decision-making based on non-classical logic such as Paraconsistent Logic are used successfully in the treatment of uncertainties. The method presented in this paper is based on... Nowadays, application model systems for decision-making based on non-classical logic such as Paraconsistent Logic are used successfully in the treatment of uncertainties. The method presented in this paper is based on the fundamental concepts of Paraconsistent Annotated Logic with annotation of 2 values (PAL2v). In this study, two algorithms based on PAL2v are presented gradually, to extract the effects of the contradiction in signals of information from a database of uncertain knowledge. The Paraconsistent Extractors Algorithms of Contradiction Effect-Para Extrctr is applied to filters of networks of analyses (PANets) of signal information, where uncertain and contradictory signals may be found. Software test case scenarios are subordinated to an application model of Paraconsistent decision-making, which provides an analysis using Paraconsistent Logic in the treatment of uncertainties for design software testing strategies. This quality-quantity criterion to evaluate the software product quality is based on the characteristics of software testability analysis. The Para consistent reasoning application model system presented in this case study, reveals itself to be more efficient than the traditional methods because it has the potential to offer an appropriate treatment to different originally contradicting source information. 展开更多
关键词 Paraconsistent LOGIC design testing STRATEGIES SOFTWARE testABILITY Paraconsistent DECISION MAKING Model
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部