Pub Date : 2014-08-04DOI: 10.1504/IJCAT.1989.062649
V. Panov, K. Brandiskiond, K. Kostov
The field of a two–pole magnetic system, consisting of an AC electric machine stator with no secondary medium present, was computed using the finite–element method. The influence of the slot wedge value and that of the nonlinearity of the ferromagnetic parts on the field inhomogeneity and on the magnetic flux were determined. The application of an approximative expression for the flux density is specified.
{"title":"An investigation of a two–pole rotating magnetic field with no secondary medium present using the finite element method","authors":"V. Panov, K. Brandiskiond, K. Kostov","doi":"10.1504/IJCAT.1989.062649","DOIUrl":"https://doi.org/10.1504/IJCAT.1989.062649","url":null,"abstract":"The field of a two–pole magnetic system, consisting of an AC electric machine stator with no secondary medium present, was computed using the finite–element method. The influence of the slot wedge value and that of the nonlinearity of the ferromagnetic parts on the field inhomogeneity and on the magnetic flux were determined. The application of an approximative expression for the flux density is specified.","PeriodicalId":46624,"journal":{"name":"INTERNATIONAL JOURNAL OF COMPUTER APPLICATIONS IN TECHNOLOGY","volume":"33 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2014-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80874912","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}
Pub Date : 2014-08-04DOI: 10.1504/IJCAT.1995.062404
R. Kaula
The paper outlines a conceptual architecture that adapts the open–systems approach to integrate knowledge bases in expert system shells. To facilitate application of the open–systems approach, a general framework for open–systems development called an open intelligent information systems architecture is utilised. Vp–expert software is considered to outline the general structure of an open–systems based expert system shell environment. A prototype case is used to demonstrate the working of the environment.
{"title":"Integrating knowledge bases in expert system shells: an open–systems approach","authors":"R. Kaula","doi":"10.1504/IJCAT.1995.062404","DOIUrl":"https://doi.org/10.1504/IJCAT.1995.062404","url":null,"abstract":"The paper outlines a conceptual architecture that adapts the open–systems approach to integrate knowledge bases in expert system shells. To facilitate application of the open–systems approach, a general framework for open–systems development called an open intelligent information systems architecture is utilised. Vp–expert software is considered to outline the general structure of an open–systems based expert system shell environment. A prototype case is used to demonstrate the working of the environment.","PeriodicalId":46624,"journal":{"name":"INTERNATIONAL JOURNAL OF COMPUTER APPLICATIONS IN TECHNOLOGY","volume":"33 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2014-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81419075","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}
Pub Date : 2014-08-04DOI: 10.1504/IJCAT.1989.062688
B. Yamada
From the office to the factory, from the department store to the delivery truck, telecommunications systems are boosting not only efficiency, speed, and quality, but are creating increasingly direct links between companies and customers. In Japan, the liberalisation of the telecommunications industry and the development and expansion of information and communication systems is leading to a fundamental restructuring of the way companies do business.
{"title":"How information technology is restructuring Japanese business","authors":"B. Yamada","doi":"10.1504/IJCAT.1989.062688","DOIUrl":"https://doi.org/10.1504/IJCAT.1989.062688","url":null,"abstract":"From the office to the factory, from the department store to the delivery truck, telecommunications systems are boosting not only efficiency, speed, and quality, but are creating increasingly direct links between companies and customers. In Japan, the liberalisation of the telecommunications industry and the development and expansion of information and communication systems is leading to a fundamental restructuring of the way companies do business.","PeriodicalId":46624,"journal":{"name":"INTERNATIONAL JOURNAL OF COMPUTER APPLICATIONS IN TECHNOLOGY","volume":"107 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2014-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74870690","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}
Pub Date : 2014-08-04DOI: 10.1504/IJCAT.1990.062715
M. Chimbulev, Constantin Kotzev
A polynomic second–order method has been derived that describes the influence of temperature, initial acidity, the acidity when feeding with burnt blende is stopped, and the feed rate of the burnt blende upon the pH–value during hydrometallurgical zinc extraction in the semi–continuous mode. A computer algorithm was developed, based on the solution of a mathematical model with respect to the controlling parameter (the acidity during the stoppage of burnt blende feeding).
{"title":"Computer–controlled hydrometallurgical zinc leaching","authors":"M. Chimbulev, Constantin Kotzev","doi":"10.1504/IJCAT.1990.062715","DOIUrl":"https://doi.org/10.1504/IJCAT.1990.062715","url":null,"abstract":"A polynomic second–order method has been derived that describes the influence of temperature, initial acidity, the acidity when feeding with burnt blende is stopped, and the feed rate of the burnt blende upon the pH–value during hydrometallurgical zinc extraction in the semi–continuous mode. A computer algorithm was developed, based on the solution of a mathematical model with respect to the controlling parameter (the acidity during the stoppage of burnt blende feeding).","PeriodicalId":46624,"journal":{"name":"INTERNATIONAL JOURNAL OF COMPUTER APPLICATIONS IN TECHNOLOGY","volume":"9 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2014-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74269878","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}
Pub Date : 2014-08-04DOI: 10.1504/IJCAT.1991.062581
C. R. White
Multi–attribute utility theory is commonly applied to decision–making problems in which the possible decision consequences are characterised by more than one attribute. This study developed utility functions to provide a measure of effectiveness for project ranking and ultimately to enhance productivity in the computer science department of a large organisation. Steps in developing utility functions are summarised, and questions requiring answers are presented. The computer science model illustrated in this study uses twenty–one attributes in the major categories of services, security, personnel, and development. This model is illustrated in exhibits, and its use, flexibility, and implementation are discussed. Conclusions are drawn as to the value of using such a model as an aid to decision making.
{"title":"A utility approach to determine productivity measures for a computer science department","authors":"C. R. White","doi":"10.1504/IJCAT.1991.062581","DOIUrl":"https://doi.org/10.1504/IJCAT.1991.062581","url":null,"abstract":"Multi–attribute utility theory is commonly applied to decision–making problems in which the possible decision consequences are characterised by more than one attribute. This study developed utility functions to provide a measure of effectiveness for project ranking and ultimately to enhance productivity in the computer science department of a large organisation. Steps in developing utility functions are summarised, and questions requiring answers are presented. The computer science model illustrated in this study uses twenty–one attributes in the major categories of services, security, personnel, and development. This model is illustrated in exhibits, and its use, flexibility, and implementation are discussed. Conclusions are drawn as to the value of using such a model as an aid to decision making.","PeriodicalId":46624,"journal":{"name":"INTERNATIONAL JOURNAL OF COMPUTER APPLICATIONS IN TECHNOLOGY","volume":"32 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2014-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78953539","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}
Pub Date : 2014-08-04DOI: 10.1504/IJCAT.1991.062570
G. Acaccia, R. Michelini, R. Molfino, M. A. Recine
Multirobot co–operating systems are required to improve the efficiency of flexible manufacturing plant, enabling the fulfilment of complex tasks, with varying product mixes. The co–operation is possible, if a 'communicate/control/diagnose' manifold links each item of robotic equipment, thus providing visibility over the relevant process variables and making the functional capabilities transparent. The technical literature shows a growing interest in multirobot systems, even if most of the investigations are limited to the level of the co–ordination of independent jobs. The development of multirobot systems, co–operating for the fulfilment of complex tasks, needs an appropriate programming environment, that simulates the actual dynamics of each robotic arm and emulates the real behaviour of their combined control strategy. The paper presents a systematic discussion on this information reference set–up, with a survey of the literature and of a package (SIRI–MR), specifically implemented by the Industrial Robot Design Research Group of the University of Genoa (Italy) for the development of industrial multirobot systems.
{"title":"Information reference set–up for the development of industrial multirobot systems","authors":"G. Acaccia, R. Michelini, R. Molfino, M. A. Recine","doi":"10.1504/IJCAT.1991.062570","DOIUrl":"https://doi.org/10.1504/IJCAT.1991.062570","url":null,"abstract":"Multirobot co–operating systems are required to improve the efficiency of flexible manufacturing plant, enabling the fulfilment of complex tasks, with varying product mixes. The co–operation is possible, if a 'communicate/control/diagnose' manifold links each item of robotic equipment, thus providing visibility over the relevant process variables and making the functional capabilities transparent. The technical literature shows a growing interest in multirobot systems, even if most of the investigations are limited to the level of the co–ordination of independent jobs. The development of multirobot systems, co–operating for the fulfilment of complex tasks, needs an appropriate programming environment, that simulates the actual dynamics of each robotic arm and emulates the real behaviour of their combined control strategy. The paper presents a systematic discussion on this information reference set–up, with a survey of the literature and of a package (SIRI–MR), specifically implemented by the Industrial Robot Design Research Group of the University of Genoa (Italy) for the development of industrial multirobot systems.","PeriodicalId":46624,"journal":{"name":"INTERNATIONAL JOURNAL OF COMPUTER APPLICATIONS IN TECHNOLOGY","volume":"5 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2014-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75360288","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}
Pub Date : 2014-08-04DOI: 10.1504/IJCAT.1991.062569
G. Müller
A short overview of the basic ideas of the finite–element method is given with a historical background. The different fields in which this method is used are briefly summarised. Worked examples show some applications of modern software products in the fields of structural mechanics and heat transfer. Problems in solving these examples are addressed.
{"title":"The current state of use of finite–element methods in industry","authors":"G. Müller","doi":"10.1504/IJCAT.1991.062569","DOIUrl":"https://doi.org/10.1504/IJCAT.1991.062569","url":null,"abstract":"A short overview of the basic ideas of the finite–element method is given with a historical background. The different fields in which this method is used are briefly summarised. Worked examples show some applications of modern software products in the fields of structural mechanics and heat transfer. Problems in solving these examples are addressed.","PeriodicalId":46624,"journal":{"name":"INTERNATIONAL JOURNAL OF COMPUTER APPLICATIONS IN TECHNOLOGY","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2014-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76706230","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}
Pub Date : 2014-08-04DOI: 10.1504/IJCAT.1996.062298
S. Hwang
The objective of this paper is to propose a general method for finding the effects of flexible links on the tracking performances using adaptive tracking controllers (ATC). The Lagrange–Euler equation is used to formulate the dynamic equations of motion. The equations of motion of the flexible manipulator in a vector–matrix form are coupled, nonlinear, and second–order differential equations. To obtain the effects of the flexible links on the controller, a rigid–based ATC is used to control a rigid, and its equivalent flexible, dynamic model, respectively. The proposed method has no limitation on the number of links used. Two existing model reference adaptive control techniques, the gradient approach by using the modified MIT (MMIT) rule and the exact matching (EM), are applied. The exact matching adaptation mechanism is used in this study as a comparative reference for the tracking performance. Numerical simulation results indicate that the gradient approach has superior performance over other designs. The proposed method can be used as a design tool to reduce the weight of a manipulator to improve the efficiency. The method is not just for the adaptive controls, but it also can be used in any state space control schemes. A comparison of the tracking performance is also made for the MIT rule and the modified MIT rule.
{"title":"The effect of link flexibility on planar manipulators using an adaptive tracking controller","authors":"S. Hwang","doi":"10.1504/IJCAT.1996.062298","DOIUrl":"https://doi.org/10.1504/IJCAT.1996.062298","url":null,"abstract":"The objective of this paper is to propose a general method for finding the effects of flexible links on the tracking performances using adaptive tracking controllers (ATC). The Lagrange–Euler equation is used to formulate the dynamic equations of motion. The equations of motion of the flexible manipulator in a vector–matrix form are coupled, nonlinear, and second–order differential equations. To obtain the effects of the flexible links on the controller, a rigid–based ATC is used to control a rigid, and its equivalent flexible, dynamic model, respectively. The proposed method has no limitation on the number of links used. Two existing model reference adaptive control techniques, the gradient approach by using the modified MIT (MMIT) rule and the exact matching (EM), are applied. The exact matching adaptation mechanism is used in this study as a comparative reference for the tracking performance. Numerical simulation results indicate that the gradient approach has superior performance over other designs. The proposed method can be used as a design tool to reduce the weight of a manipulator to improve the efficiency. The method is not just for the adaptive controls, but it also can be used in any state space control schemes. A comparison of the tracking performance is also made for the MIT rule and the modified MIT rule.","PeriodicalId":46624,"journal":{"name":"INTERNATIONAL JOURNAL OF COMPUTER APPLICATIONS IN TECHNOLOGY","volume":"48 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2014-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79758111","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}
Pub Date : 2014-08-04DOI: 10.1504/IJCAT.1992.062586
Takahide Tokawa, Steven H. Kim
Automated tools for design can improve productivity in an organisation by accelerating the execution of routine tasks. A more interesting consequence of computer–aided packages is the possibility of enhancing the quality of design: the increased efficiency allows for a systematic search of alternative candidates, from which a superior design may be selected. This paper presents an operational definition of quality based on the relative rank of a design with respect to alternative candidates. The impact of an expanded list of candidates on the ultimate quality is explored through both a theoretical analysis and a simulation case study.
{"title":"Quality and design automation: effectiveness against completeness of search","authors":"Takahide Tokawa, Steven H. Kim","doi":"10.1504/IJCAT.1992.062586","DOIUrl":"https://doi.org/10.1504/IJCAT.1992.062586","url":null,"abstract":"Automated tools for design can improve productivity in an organisation by accelerating the execution of routine tasks. A more interesting consequence of computer–aided packages is the possibility of enhancing the quality of design: the increased efficiency allows for a systematic search of alternative candidates, from which a superior design may be selected. This paper presents an operational definition of quality based on the relative rank of a design with respect to alternative candidates. The impact of an expanded list of candidates on the ultimate quality is explored through both a theoretical analysis and a simulation case study.","PeriodicalId":46624,"journal":{"name":"INTERNATIONAL JOURNAL OF COMPUTER APPLICATIONS IN TECHNOLOGY","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2014-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80853142","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}
Pub Date : 2014-08-04DOI: 10.1504/IJCAT.1998.062217
H. Lau, F. Chan, R. Ip
For a manufacturing company to become world competitive it must, among other things, have an effective information processing capability. In today's environment, there are a great variety of computer systems which make the linking of computers to enable electronic data interchange even more difficult and costly. This problem is addressed in this paper with the development of a system which allows the integration of manufacturing systems in a generic way. The methodology for this generic approach, aimed at achieving efficient data exchange among involved systems, is covered in the paper.
{"title":"Generic methodology for integration of manufacturing information systems","authors":"H. Lau, F. Chan, R. Ip","doi":"10.1504/IJCAT.1998.062217","DOIUrl":"https://doi.org/10.1504/IJCAT.1998.062217","url":null,"abstract":"For a manufacturing company to become world competitive it must, among other things, have an effective information processing capability. In today's environment, there are a great variety of computer systems which make the linking of computers to enable electronic data interchange even more difficult and costly. This problem is addressed in this paper with the development of a system which allows the integration of manufacturing systems in a generic way. The methodology for this generic approach, aimed at achieving efficient data exchange among involved systems, is covered in the paper.","PeriodicalId":46624,"journal":{"name":"INTERNATIONAL JOURNAL OF COMPUTER APPLICATIONS IN TECHNOLOGY","volume":"8 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2014-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83045736","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}
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