Advances in Engineering Software (1978)最新文献

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A variable resolution graph based model of three dimensional objects 基于变分辨率图形的三维物体模型
Advances in Engineering Software (1978) Pub Date : 1988-07-01 DOI: 10.1016/0141-1195(88)90014-9
Leila De Floriani
{"title":"A variable resolution graph based model of three dimensional objects","authors":"Leila De Floriani","doi":"10.1016/0141-1195(88)90014-9","DOIUrl":"10.1016/0141-1195(88)90014-9","url":null,"abstract":"<div><p>A hierarchical boundary model of three dimensional objects provides a representation of the surfaces enclosing it at successively finer levels of specification. A hierarchical graph structure for encoding the boundary of a solid object at variable resolution is described. This model, called structured edge-face graph, is based on a face oriented relational description of the object boundary. In the paper, the concept of variable resolution surface representation is briefly reviewed, and the structured edge-face is described in detail. A data structure for encoding a structured edge-faced graph is presented. The concept of adjacency relation between pairs of primitive boundary entities at fixed accuracy is introduced, and adjacency finding algorithms, which operate on a structured edge-face graph object representation, are presented. Four basic operations for defining and manipulating a structured model are described. These primitives support both a bottom-up and a top-down development of the hierarchical boundary model.</p></div>","PeriodicalId":100043,"journal":{"name":"Advances in Engineering Software (1978)","volume":"10 3","pages":"Pages 143-158"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-1195(88)90014-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53539787","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: 5
A FORTRAN routine for the computation of gamma percentiles 一个用于计算百分位数的FORTRAN例程
Advances in Engineering Software (1978) Pub Date : 1988-07-01 DOI: 10.1016/0141-1195(88)90015-0
Huynh Ngoc Phien
{"title":"A FORTRAN routine for the computation of gamma percentiles","authors":"Huynh Ngoc Phien","doi":"10.1016/0141-1195(88)90015-0","DOIUrl":"10.1016/0141-1195(88)90015-0","url":null,"abstract":"<div><p>A simple FORTRAN routine, employing a combination of third-order Schroder iteration and Newton-Raphson method, is given for computing gamma percentiles</p></div>","PeriodicalId":100043,"journal":{"name":"Advances in Engineering Software (1978)","volume":"10 3","pages":"Pages 159-164"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-1195(88)90015-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53539858","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: 3
Bulletin no. 37 公告没有。37
Advances in Engineering Software (1978) Pub Date : 1988-07-01 DOI: 10.1016/0141-1195(88)90017-4
{"title":"Bulletin no. 37","authors":"","doi":"10.1016/0141-1195(88)90017-4","DOIUrl":"https://doi.org/10.1016/0141-1195(88)90017-4","url":null,"abstract":"","PeriodicalId":100043,"journal":{"name":"Advances in Engineering Software (1978)","volume":"10 3","pages":"Page 166"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-1195(88)90017-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91719310","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
A finite element approach of the hydraulic fracturing technique for oil well stimulation 油井增产水力压裂技术的有限元分析
Advances in Engineering Software (1978) Pub Date : 1988-07-01 DOI: 10.1016/0141-1195(88)90012-5
Adolfo P. Filho, Álvaro Maia Da Costa, Nelson F.F. Ebecken
{"title":"A finite element approach of the hydraulic fracturing technique for oil well stimulation","authors":"Adolfo P. Filho,&nbsp;Álvaro Maia Da Costa,&nbsp;Nelson F.F. Ebecken","doi":"10.1016/0141-1195(88)90012-5","DOIUrl":"10.1016/0141-1195(88)90012-5","url":null,"abstract":"","PeriodicalId":100043,"journal":{"name":"Advances in Engineering Software (1978)","volume":"10 3","pages":"Pages 131-135"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-1195(88)90012-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53539713","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
An efficient implementation of LU decomposition in C 在C语言中有效实现LU分解
Advances in Engineering Software (1978) Pub Date : 1988-07-01 DOI: 10.1016/0141-1195(88)90011-3
Alan Meyer
{"title":"An efficient implementation of LU decomposition in C","authors":"Alan Meyer","doi":"10.1016/0141-1195(88)90011-3","DOIUrl":"10.1016/0141-1195(88)90011-3","url":null,"abstract":"<div><p>An implementation of the well-known LU decomposition method for solving systems of linear equations is presented. Operation counts typically stated for this method are derived from a theoretical analysis of the algorithm and ignore the practical aspects of the implementation. The overhead associated with assessing elements of the two-dimensional coefficient array are explored herein, and seen to be substantial. This overhead is incorporated into the analysis of LU decomposition and new operation counts are developed. By exploiting the addressing capabilities of C the cost of array access is significantly reduced, resulting in an efficient implementation. The techniques employed here can be applied to a wide variety of C programs which utilize multi-dimensional arrays.</p></div>","PeriodicalId":100043,"journal":{"name":"Advances in Engineering Software (1978)","volume":"10 3","pages":"Pages 123-130"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-1195(88)90011-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53539639","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: 3
Microcomputers in engineering applications 工程应用中的微型计算机
Advances in Engineering Software (1978) Pub Date : 1988-07-01 DOI: 10.1016/0141-1195(88)90018-6
R.A. Adey
{"title":"Microcomputers in engineering applications","authors":"R.A. Adey","doi":"10.1016/0141-1195(88)90018-6","DOIUrl":"https://doi.org/10.1016/0141-1195(88)90018-6","url":null,"abstract":"","PeriodicalId":100043,"journal":{"name":"Advances in Engineering Software (1978)","volume":"10 3","pages":"Page 166"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-1195(88)90018-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91755007","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
Nonlinear static analysis of reinforced concrete frames by network models 钢筋混凝土框架非线性静力分析的网络模型
Advances in Engineering Software (1978) Pub Date : 1988-07-01 DOI: 10.1016/0141-1195(88)90010-1
Panagis G. Papadopoulos
{"title":"Nonlinear static analysis of reinforced concrete frames by network models","authors":"Panagis G. Papadopoulos","doi":"10.1016/0141-1195(88)90010-1","DOIUrl":"10.1016/0141-1195(88)90010-1","url":null,"abstract":"<div><p>The simulation of reinforced concrete frames by networks, with bars obeying uniaxial stres-strain laws of concrete or steel, is proposed. Formulae for the determination of concrete bar sections are derived. Concrete σ-ε law, including cracking and plastic behavior, is described by 3 constitutive variables; steel σ-ε law, including plastic behavior, is described by 1 constitutive variable. A simple program is presented for the nonlinear static analysis of such network models based on the incremental loading technique. This program is used for the analysis of a plane, one story reinforced concrete frame under cyclic horizontal loading of its girder, for which experimental data are available. The computational results are found in good agreement with the experimental ones.</p></div>","PeriodicalId":100043,"journal":{"name":"Advances in Engineering Software (1978)","volume":"10 3","pages":"Pages 114-122"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-1195(88)90010-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53539273","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: 1
INTERP — A fortran callable data interpretation subroutine system 一个fortran可调用的数据解释子程序系统
Advances in Engineering Software (1978) Pub Date : 1988-07-01 DOI: 10.1016/0141-1195(88)90013-7
Victor N. Kaliakin, Kenneth J. Parano
{"title":"INTERP — A fortran callable data interpretation subroutine system","authors":"Victor N. Kaliakin,&nbsp;Kenneth J. Parano","doi":"10.1016/0141-1195(88)90013-7","DOIUrl":"10.1016/0141-1195(88)90013-7","url":null,"abstract":"<div><p>The INTERP free format data interpretation subroutine system for lexical analysis is described in this paper. This system, written in ANSI standard FORTRAN 77, is flexible, easy to use, small, and efficient. These qualities make the addition of INTERP to an application program quite simple. INTERP has been used to interpret problem oriented languages for several finite element programs operating both in batch and interactive environments on micro, supermini, and supercomputers. While INTERP is presented here in the context of translating problem oriented languages, the system has been used in several other applications including: a low-level assembler, a data manipulator, and a modular, interactive user interface system with integrated parsing and prompting.</p></div>","PeriodicalId":100043,"journal":{"name":"Advances in Engineering Software (1978)","volume":"10 3","pages":"Pages 136-142"},"PeriodicalIF":0.0,"publicationDate":"1988-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-1195(88)90013-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53539744","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: 1
Bulletin No. 36 公报第36期
Advances in Engineering Software (1978) Pub Date : 1988-04-01 DOI: 10.1016/0141-1195(88)90008-3
{"title":"Bulletin No. 36","authors":"","doi":"10.1016/0141-1195(88)90008-3","DOIUrl":"https://doi.org/10.1016/0141-1195(88)90008-3","url":null,"abstract":"","PeriodicalId":100043,"journal":{"name":"Advances in Engineering Software (1978)","volume":"10 2","pages":"Page 109"},"PeriodicalIF":0.0,"publicationDate":"1988-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-1195(88)90008-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137009269","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
Integration of rule-based and procedural code to obtain flexible engineering software 整合基于规则和程序的代码,获得灵活的工程软件
Advances in Engineering Software (1978) Pub Date : 1988-04-01 DOI: 10.1016/0141-1195(88)90002-2
W.J.T. Daniel
{"title":"Integration of rule-based and procedural code to obtain flexible engineering software","authors":"W.J.T. Daniel","doi":"10.1016/0141-1195(88)90002-2","DOIUrl":"10.1016/0141-1195(88)90002-2","url":null,"abstract":"<div><p>The application of rule-based programming, commonly associated with expert systems, to programming tasks normally associated with procedural software is considered. To illustrate the ideas, a toy finite element package has been developed, consisting of a set of processors which are configured at run time by interpreting a set of rules. A typical rule relates the immediate prerequisites for a particular processor to its output. The algorithm used to interpret the rules and produce a linearised graph listing the order of execution of processors, is described. The potential of the methodology is to achieve a package that can reconfigure itself to meet a user's request. It would avoid redundant computation and be easy to modify. Issues in data management that arise from adoption of the methodology are briefly discussed, including the design of a suitable database.</p></div>","PeriodicalId":100043,"journal":{"name":"Advances in Engineering Software (1978)","volume":"10 2","pages":"Pages 72-76"},"PeriodicalIF":0.0,"publicationDate":"1988-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-1195(88)90002-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53539442","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: 1
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