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The condition specification: revisiting its role within a hierarchy of simulation model specifications 条件规范:重新审视其在仿真模型规范层次结构中的角色
ACM Sigsim Simulation Digest Pub Date : 1993-03-21 DOI: 10.1145/165347.165351
E. Page
{"title":"The condition specification: revisiting its role within a hierarchy of simulation model specifications","authors":"E. Page","doi":"10.1145/165347.165351","DOIUrl":"https://doi.org/10.1145/165347.165351","url":null,"abstract":"The past decade of research in simulation modeling methodology has seen a growing appreciation and understanding of the importance of both the process and product of model representation (commonly referred to as model specification). This article presents a brief discussion of the evolving role of one simulation model specification language, the condition specification, within an environment approach to simulation model development and support.","PeriodicalId":138785,"journal":{"name":"ACM Sigsim Simulation Digest","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129614434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Continuous systems simulation using GPSS/H 使用GPSS/H进行连续系统仿真
ACM Sigsim Simulation Digest Pub Date : 1993-03-21 DOI: 10.1145/165347.165350
E. Kalisz
{"title":"Continuous systems simulation using GPSS/H","authors":"E. Kalisz","doi":"10.1145/165347.165350","DOIUrl":"https://doi.org/10.1145/165347.165350","url":null,"abstract":"Simulation models of continuous systems are in fact discrete computational models. This is the result of applying numerical methods for integrating the differential equations generally used as mathematical models of continuous systems. Under such conditions the values of all variables in the simulation model are computed for discrete values of the independent variable time, separated by a fixed or variable step, according to the integration method used. Each value of the independent variable time for which the simulation model state changes can be considered as the time point when an event takes place. Such point of view leads to an obvious conclusion: continuous systems simulation can be performed using a discrete event simulator. This approach is very important in those cases when the considered system has a combined (discrete event and continuous) model and the available simulation tool does not provide for continuous systems modeling.","PeriodicalId":138785,"journal":{"name":"ACM Sigsim Simulation Digest","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128172433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mathematical model of the probe volume in an optical particle sizing device 光学粒度测量装置中探针体积的数学模型
ACM Sigsim Simulation Digest Pub Date : 1992-09-15 DOI: 10.1145/142103.142108
S. Samavi, J. Gassaway
{"title":"Mathematical model of the probe volume in an optical particle sizing device","authors":"S. Samavi, J. Gassaway","doi":"10.1145/142103.142108","DOIUrl":"https://doi.org/10.1145/142103.142108","url":null,"abstract":"This paper presents a new approach in numerical simulation and mathematical modeling of the sample volume in an optical particle-sizing instrument (MSU-PSI) [1]. This in done for when the device is operating in Small Angle Near Forward Scattering (SANFS) mode. The instrument is designed to perform on-line measurement of the particle-size distributions by means of non-intrusive methods. This is achieved by measuring the size of individual particles in a sample volume. The sample volume in the SANFS mode is formed by focusing a single laser beam. The size of a particle is determined by the amount of light that it scatters, when inside the sample volume. This scattered light is captured and processed electronically and eventually is converted to a histogram which, when interpreted, will be a representation of the particle-size distribution.","PeriodicalId":138785,"journal":{"name":"ACM Sigsim Simulation Digest","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115115567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and simulation of electronic meeting systems in a DEVS-Scheme environment DEVS-Scheme环境下电子会议系统的设计与仿真
ACM Sigsim Simulation Digest Pub Date : 1992-09-15 DOI: 10.1145/142103.142106
V. Ramesh, Chris Hays
{"title":"Design and simulation of electronic meeting systems in a DEVS-Scheme environment","authors":"V. Ramesh, Chris Hays","doi":"10.1145/142103.142106","DOIUrl":"https://doi.org/10.1145/142103.142106","url":null,"abstract":"In recent years there has been increased interest in the area of electronic support for group work. Several systems have emerged from research in this area and are commonly called as Group Decision Support Systems, Computer Supported Collaborative Work Systems, Electronic Meeting Systems (EMS), etc. [Huber, 1984, Kraemer and King, 1988, Dennis et. al, 1988]. The University of Arizona's Groupsystems software is one such system [Dennis et. al., 1988]. Fig. 1 shows the conceptual representation of a meeting room running the software.","PeriodicalId":138785,"journal":{"name":"ACM Sigsim Simulation Digest","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134525653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulation of real-time embedded systems 实时嵌入式系统仿真
ACM Sigsim Simulation Digest Pub Date : 1992-09-15 DOI: 10.1145/142103.142107
Gabi Leshem
{"title":"Simulation of real-time embedded systems","authors":"Gabi Leshem","doi":"10.1145/142103.142107","DOIUrl":"https://doi.org/10.1145/142103.142107","url":null,"abstract":"This paper proposes an architecture simulator as an important addition to CASE tools, to be used during various design stages of real-time embedded systems. The architecture simulator is intended for simulating the behavior of the system based on partial information available at the beginning of the design process. The simulator in conjunction with a CASE tool can minimize the damage caused by improper design decisions made at the early stages of the design.","PeriodicalId":138785,"journal":{"name":"ACM Sigsim Simulation Digest","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129584395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A comparison of four pseudo random number generators implemented in Ada 在Ada中实现的四个伪随机数生成器的比较
ACM Sigsim Simulation Digest Pub Date : 1992-09-15 DOI: 10.1145/142103.142105
William N. Graham
{"title":"A comparison of four pseudo random number generators implemented in Ada","authors":"William N. Graham","doi":"10.1145/142103.142105","DOIUrl":"https://doi.org/10.1145/142103.142105","url":null,"abstract":"Four random number generators implemented in Ada are compared in terms of their equidistribution, independence, speed and period. Each generator is described and it's code presented. The tests used to evaluate the generators were simple ones. First, a stream of random numbers generated were checked for equidistribution by means of a chi-square test. Next, the numbers were checked for independence by means of a serial test. The code was then timed for a certain number of iterations. Finally, the reported periods of the generators are compared.","PeriodicalId":138785,"journal":{"name":"ACM Sigsim Simulation Digest","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123315394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Simulation based performance study of a dynamic routing algorithm 基于仿真的动态路由算法性能研究
ACM Sigsim Simulation Digest Pub Date : 1992-07-01 DOI: 10.1145/141426.141429
Anup Kumar, Savita Singh
{"title":"Simulation based performance study of a dynamic routing algorithm","authors":"Anup Kumar, Savita Singh","doi":"10.1145/141426.141429","DOIUrl":"https://doi.org/10.1145/141426.141429","url":null,"abstract":"This paper discusses a new distributed, dynamic routing approach for communication networks. At each node, the best available route to the destination is selected and the message is forwarded to the next node on that route. The best route is evaluated at the new node again. The choice of the best mute is based on a parameter K, defined in the paper. This parameter is calculated for every path based on the characteristics of the path, such as - the number of hops, the speeds of the links, the load on the links, reliability of links etc. The method guarantees that as long as the network is connected the message will be delivered to the destination using the best available path. This approach does not have the counting to infinity problem and is loop-free. A comparative study of this scheme with some of the existing schemes is also included to demonstrate its generality and effectiveness.","PeriodicalId":138785,"journal":{"name":"ACM Sigsim Simulation Digest","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116914937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Queuing delays for uniform and nonuniform traffic patterns in a MIN MIN中均匀和非均匀流量模式的排队延迟
ACM Sigsim Simulation Digest Pub Date : 1992-07-01 DOI: 10.1145/141426.141428
R.D.D.V. Sivaram
{"title":"Queuing delays for uniform and nonuniform traffic patterns in a MIN","authors":"R.D.D.V. Sivaram","doi":"10.1145/141426.141428","DOIUrl":"https://doi.org/10.1145/141426.141428","url":null,"abstract":"In this paper we show that queuing delays or waiting times for messages impose a significant degradation in the performance of a buffered packet switching Multistage Interconnection Network subjected to heavy uniform traffic, and nonuniform traffic patterns. Hotspots and Nonuniform Traffic Spots were introduced to cause nonuniform traffic. The \"average standard deviation queue time\" is found to be a good measure of network congestion at each stage of a MIN, in a message passing environment. We also show that \"tree saturation\" effect is present even for MINs with infinite buffer queues.","PeriodicalId":138785,"journal":{"name":"ACM Sigsim Simulation Digest","volume":"220 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115599364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
A simulation study of the performance of the extra-stage cube and the augmented-shuffle exchange networks under faults 故障情况下多级立方和增强洗牌交换网络性能的仿真研究
ACM Sigsim Simulation Digest Pub Date : 1992-07-01 DOI: 10.1145/141426.141427
A. Abonamah, F. Sibai
{"title":"A simulation study of the performance of the extra-stage cube and the augmented-shuffle exchange networks under faults","authors":"A. Abonamah, F. Sibai","doi":"10.1145/141426.141427","DOIUrl":"https://doi.org/10.1145/141426.141427","url":null,"abstract":"In this paper, we conducted a simulation study to compare the performance of the Extra-Stage Cube (ESC) and the Augmented-Shuffle Exchange (ASE) networks in the presence of multiple link failures. The main objective of this study is gain an insight as to which of these two networks can better support graceful degradation under varying network loads and link failure rates. To achieve this task, three performance metrics are introduced, these are throughput, Message-Delivery ratio, and Average Delay Per Message and three simulation experiments using the simulation package COMNET II.5 are designed.The simulation results indicate that with respect to the three performance metrics, the ESC network outperforms the ASE for network size N&ge;32 and link MTTF=0.75 hours. However, when the link MTTF=0.12 hours, the ASE network outperforms the ESC network for N<64. In both cases, the ESC network outperforms the ASE network when N=64. This result appears to be directly related to the link complexities of the two networks. For large networks, the link complexity of the ASE is much larger than that of the ESC network and accounts for its poorer performance when N<32.","PeriodicalId":138785,"journal":{"name":"ACM Sigsim Simulation Digest","volume":"682 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126758095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-stage flow-shop in steel works 钢厂多级流水作业
ACM Sigsim Simulation Digest Pub Date : 1991-04-01 DOI: 10.1145/106073.106139
N. Ueno, S. Sotojima, J. Takeda
{"title":"Multi-stage flow-shop in steel works","authors":"N. Ueno, S. Sotojima, J. Takeda","doi":"10.1145/106073.106139","DOIUrl":"https://doi.org/10.1145/106073.106139","url":null,"abstract":"","PeriodicalId":138785,"journal":{"name":"ACM Sigsim Simulation Digest","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116470988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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