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性能等价
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  performance equivalence
     So it is more feasible to simplify SPN model on the basis of performance equivalence before analyzing it.
     因此 ,在对模型进行分析之前 ,先对其进行适当的性能等价化简 ,是一种更为可行的分析方法 .
短句来源
  performance equivalent
     Extended workflow model and its performance equivalent analysis
     工作流扩展模型及其性能等价分析
短句来源
     Study of Performance Equivalent Simplification and Analysis of Stochastic Petri Nets
     随机Petri网性能等价化简与分析方法研究
短句来源
     Based on the workflow control patterns,the basic model of workflow systems are extended to six kinds to enrich the expressive power of workflow,and the performance equivalent equations of choice model,fault-tolerant model and nesting model are deduced based on stochastic Petri nets(SPN).
     基于8种工作流基本控制模式,对WFMC定义的4种工作流基本模型进行扩展,得到了合理的、满足封闭性要求的6种扩展工作流基本模型,丰富了工作流模型的表达能力。 从统计学角度推导了基于随机Petri网的选择、容错和嵌套模型的性能等价计算公式,给出了一种定量分析工作流模型性能参数的通用方法。
短句来源
     An Approach to Performance Equivalent Simplification and Analysis of Stochastic Petri Nets
     一种随机Petri网性能等价化简与分析方法
短句来源
     Performance Equivalent Analysis of Workflow Systems
     工作流系统模型的性能等价分析
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  “性能等价”译为未确定词的双语例句
     Simulation results show that BER performances of second-order approximated Log-MAP algorithm are equivalent to the MAP algorithm,with 0.7-0.9dB higher than that of SOVA turbo decoder.
     仿真结果表明,二阶近似Log-M AP turbo译码器与M A P turbo译码器性能等价,优于SO VA turbo译码器0.7-0.9dB。
短句来源
     Simulation results show that the coding gain of first-order approximated Log-MAP turbo decoder is 0.2~0.3dB higher than that of MAX-Log-MAP turbo decoder, while BER performances of second-order and third-order approximated Log-MAP algorithms are equivalent to the original Log-MAP algorithm and have 0.3~0.5dB additional coding gain when compared with MAX-Log-MAP one。
     仿真结果表明:一阶近似Log-MAP算法将Max-Log-MAPturbo译码器的纠错性能改进了0.2~0.3dB,二阶及三阶近似Log-MAP算法与原Log-MAP算法性能等价,优于Max-Log-MAP算法0.3~0.5dB。
短句来源
     The paper presents a performance analysis method which uses General Stochastic Petri Nets to model workflow and applies queueing theory to the evaluation of the influence on workflow performance caused by resource constraint. Sequence, choice, parallel and loop, four basic Stochastic Petri Nets model and their improved equivalent performance formula are used to calculate workflow performance parameters and several methods are also given to improve workflow performance.
     本文提出了一种受资源约束的工作流性能分析方法,用广义随机Petri网对工作流进行建模,应用排队理论衡量资源约束对工作流性能的影响,利用工作流中顺序、选择、并发、循环四种基本结构的随机Petri网模型及其改进的性能等价公式计算工作流的性能指标,并给出了能提高工作流性能的几种方法。
短句来源
     Finally, an example is given to explain how to model a workflow system based on SPN, and how to use those equations to compute their performance.
     最后通过现实中的一个工作流实例来说明如何建立相应的随机Petri网模型,以及如何利用这些性能等价公式来计算工作流的性能参数.
短句来源
     By using these equations, not only the complex workflow model can be simplified but also the product-form solution of performance parameter of workflow model can be got.
     给出了定量分析工作流系统性能的通用方法,通过用这些等价公式不仅可以对复杂的系统进行性能等价化简,而且还可以得到性能参数的乘积解.
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  performance equivalence
Next, corresponding to ICSs in a FC-subnet, a performance equivalence theorem is presented.
      
  performance equivalent
Moreover, investigations on the complete oxidation reaction of acetaldehyde into CO2 and H2O showed a high performance equivalent to that of the most efficient marketed powdered photocatalysts.
      
Twenty-one patients maintained gait performance equivalent to that before injury.
      
washing machine, showing particulate soil antiredeposition performance equivalent to poly(acrylic acid) with a molecular weight of 4500 and improved oily soil antiredeposition.
      
Microemulsions appear to have promise, but more research and engine testing will be necessary before performance equivalent to the ester fuels can be developed.
      
Although the fabrication technique was quite simple, the resultant La0.8Sr0.2CoO3 electrodes showed kinetic performance equivalent to the NiO.
      
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From the points of view of the methodology of materialogy, the property, structcre and processing are discussed in a broad sense, and the results of these discussions are extended to analyze some problems of human being and things.Five sections are divided in this paper, In the first section, the concept of the topics in the title of this paper are defined and discussed, In the second section,after brief introduction of the definition, classification and analytical methods of property, the equivalent concepts...

From the points of view of the methodology of materialogy, the property, structcre and processing are discussed in a broad sense, and the results of these discussions are extended to analyze some problems of human being and things.Five sections are divided in this paper, In the first section, the concept of the topics in the title of this paper are defined and discussed, In the second section,after brief introduction of the definition, classification and analytical methods of property, the equivalent concepts of property in a broad sense are introduced and discussed. In the third section, the definition of the structure of material and the general definition of the structure of the system are presented, the presentation methods and stability of the structure are discussed in a broad sense. In the fourth section, the production processing of the material is discussed in terms of aim, standard and stability; and the natural process is analyzed in topics of connotation, internal and external causes, end Points, principles, mechanical analysis and structure. The fifth section is conclusion, the outlooks on materials and things are presented, and the topics of material and talent are describled in analogical argument with a poem.

本文从材料学方法论角度,对材料的性能、结构和工艺,进行普遍的讨论,并外延到广泛的物、人和事。全文分五节。第一节释题,解释题中主要概念。第二节性能,在简明地介绍材料性能的概念和分析方法后,通论了人、事、物中与性能等价的概念;第三节结构,给出材料结构及结构的普遍定义,介绍各种表述方法和稳定性;第四节工艺,讨论了生产工艺的目的、标准和稳定,自然过程的内涵、因缘、始终、原理、力学分析和结构。第五节结语,给出材料观和事物观,对比了材料与人才。

State space's explosion of Stochastic Petri Nets(SPN) is always one of the important problems to solve.In Stochastic Petri Nets,sequent and parallel transitions are primary structure.Simplification of sequent and parallel transitions can not only help to solve the problem of state space's explosion,but also make preparations for other simplification methods.Meanwhile,in some important SPN models,such as Workflow and Multimedia,there are a lot of sequent and parallel transitions,so simplifying sequent and parallel...

State space's explosion of Stochastic Petri Nets(SPN) is always one of the important problems to solve.In Stochastic Petri Nets,sequent and parallel transitions are primary structure.Simplification of sequent and parallel transitions can not only help to solve the problem of state space's explosion,but also make preparations for other simplification methods.Meanwhile,in some important SPN models,such as Workflow and Multimedia,there are a lot of sequent and parallel transitions,so simplifying sequent and parallel transition structure,especially deducing its equivalent equation will make a significant contribution to simplification of whole SPN.The authors discuss sequent and parallel transition model and simplification theory,deduce their performance equivalent equations,give an example of simplification of SPN model,and finally analyze the conclusion.

随机Petri网的状态空间爆炸问题的研究始终是Petri网研究的主要问题之一 .在随机Petri网模型中 ,变迁的串、并联是Petri网模型的主要基本形式 ,对它的化简不仅有助于解决随机Petri网状态空间的爆炸问题 ,而且也为其他随机Petri网的化简技术提供一个坚实的基础 .另外在诸如工作流、多媒体等重要的随机Petri网模型中也存在大量的变迁的串、并联结构 ,所以对随机Petri网模型变迁的串、并联的化简 ,特别是能够推导出它的性能等价的数学公式就显得很有必要 .本文详细阐述了随机Petri网变迁的串并联的模型化简技术 ,推导出了变迁的串、并联化简的性能等价公式 ,并给出一个化简的例子 ,最后对结果的相关问题进行了分析 .

Stochastic Petri Net (SPN) are a powerful modeling and analyzing tool for system performance evaluation.But the problem of state space's explosion of SPN limits its ability to analyze complex and large scale systems.So it is more feasible to simplify SPN model on the basis of performance equivalence before analyzing it.In this paper,the authors define a class of SPN Elementary SPN (ESPN) which is composed of four elementary subnets including sequence subnet,parallel subnet,choice subnet and iteration subnet,and...

Stochastic Petri Net (SPN) are a powerful modeling and analyzing tool for system performance evaluation.But the problem of state space's explosion of SPN limits its ability to analyze complex and large scale systems.So it is more feasible to simplify SPN model on the basis of performance equivalence before analyzing it.In this paper,the authors define a class of SPN Elementary SPN (ESPN) which is composed of four elementary subnets including sequence subnet,parallel subnet,choice subnet and iteration subnet,and propose a group of performance equivalence formulas for the four elementary subnets,as well as a method of performance equivalence simplification and analysis for ESPN with linear time complexity.In addition,two transforming rules are put forward to transform non elementary subnets into combined elementary subnets such that the proposed algorithm can be used in analysis of more general SPN.

随机Petri网模型是系统性能评价的有力工具 ,但其状态空间随模型规模的增长而指数性增长的问题限制了其对复杂和大规模系统模型的性能数量分析能力 .因此 ,在对模型进行分析之前 ,先对其进行适当的性能等价化简 ,是一种更为可行的分析方法 .本文首先讨论了一类随机Petri网 -基本随机Petri网 (ESPN)的性能等价分析方法 ,这类随机Petri网由顺序、并行、选择和循环等四种基本结构及其组合构成 .作者推导出这四种基本结构的性能等价公式 ,并运用自底向上逐步综合替代的分层分析方法 ,给出这类随机Petri网模型的性能等价化简分析方法 ,该方法的复杂性随模型增长而线性增长 ,有效解决了其性能数量分析问题 .然后 ,讨论了两种非基本结构到基本结构的转换规则 ,使得复杂的随机Petri网模型也可能转换为ESPN模型 ,从而使性能等价算法可应用于一般随机Petri网

 
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