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Proceedings of the December 9-11, 1968, fall joint computer conference, part I最新文献

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QUIP: a system for automatic program generation QUIP:自动生成程序的系统
Proceedings of the December 9-11, 1968, fall joint computer conference, part I Pub Date : 1968-12-09 DOI: 10.1145/1476589.1476671
F. Bequaert
{"title":"QUIP: a system for automatic program generation","authors":"F. Bequaert","doi":"10.1145/1476589.1476671","DOIUrl":"https://doi.org/10.1145/1476589.1476671","url":null,"abstract":"Extensive programming effort is expended in the rewriting of minor variations of already existing programs. One method of reducing this redundant effort is to devise a method for automatically generating programs for the solution of any of a class of problems. One such technique is illustrated in Figure 1. A generator program produces, in response to user inputs, an output program for the solution of a particular problem. User inputs to the generator can be either in the form of commands in a special purpose language (e.g., macro statement) or responses to computer-generated queries. The output code produced by such a system is free of coding errors usual in handwritten programs. The output program is a free-standing entity which can be used for production data processing without user intervention. The literature contains a number of references to this type of approach.","PeriodicalId":294588,"journal":{"name":"Proceedings of the December 9-11, 1968, fall joint computer conference, part I","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1968-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127067834","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
Thrashing: its causes and prevention 打打:原因及预防
Proceedings of the December 9-11, 1968, fall joint computer conference, part I Pub Date : 1968-12-09 DOI: 10.1145/1476589.1476705
P. Denning
{"title":"Thrashing: its causes and prevention","authors":"P. Denning","doi":"10.1145/1476589.1476705","DOIUrl":"https://doi.org/10.1145/1476589.1476705","url":null,"abstract":"A particularly troublesome phenomenon, thrashing, may seriously interfere with the performance of paged memory systems, reducing computing giants (Multics, IBM System 360, and others not necessarily excepted) to computing dwarfs. The term thrashing denotes excessive overhead and severe performance degradation or collapse caused by too much paging. Thrashing inevitably turns a shortage of memory space into a surplus of processor time.","PeriodicalId":294588,"journal":{"name":"Proceedings of the December 9-11, 1968, fall joint computer conference, part I","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1968-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127464890","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: 229
The organization and formatting of hierarchical displays for the on-line input of data 联机数据输入的分层显示的组织和格式
Proceedings of the December 9-11, 1968, fall joint computer conference, part I Pub Date : 1968-12-09 DOI: 10.1145/1476589.1476623
G. T. Uber, P. E. Williams, B. L. Hisey, R. Siekert
{"title":"The organization and formatting of hierarchical displays for the on-line input of data","authors":"G. T. Uber, P. E. Williams, B. L. Hisey, R. Siekert","doi":"10.1145/1476589.1476623","DOIUrl":"https://doi.org/10.1145/1476589.1476623","url":null,"abstract":"On-line terminals, which we shall call \"list selection terminals,\" are being investigated here and elsewhere as input devices for information systems. These display lists of alphanumeric entries from which a user may select entries by pointing. Whereas users of most terminals (including ours) point with a light-pen, users of the Control Data Digiscribe select by touching electrically conductive regions on the faceplate with a finger, thus completing a radio-frequency circuit. The lists are displayed on either a cathode ray tube or an optical rear-projection screen, and they may be changed rapidly under computer control. The user composes input to the system by selecting words and phrases from the lists. As he proceeds, new lists are displayed as required.","PeriodicalId":294588,"journal":{"name":"Proceedings of the December 9-11, 1968, fall joint computer conference, part I","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1968-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125181848","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: 11
An approach to simulation model development for improved planning 一种改进规划的仿真模型开发方法
Proceedings of the December 9-11, 1968, fall joint computer conference, part I Pub Date : 1968-12-09 DOI: 10.1145/1476589.1476647
J. L. McKenney
{"title":"An approach to simulation model development for improved planning","authors":"J. L. McKenney","doi":"10.1145/1476589.1476647","DOIUrl":"https://doi.org/10.1145/1476589.1476647","url":null,"abstract":"This paper proposes an approach to planning which relies on involving the manager in the development of a simulation model. The purpose of this involvement is to improve the manager's understanding of his environment; and therefore, the appropriateness of his plans. The approach is based upon the premise that active planning is a learning process. This premise is the result of experience in several modeling projects and a clinical study of a manager developing a simulation model.","PeriodicalId":294588,"journal":{"name":"Proceedings of the December 9-11, 1968, fall joint computer conference, part I","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1968-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133010309","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
Hybrid computer integration of partial differential equations by use of an assumed sum seperation of variables 利用假设的变量和分离的偏微分方程的混合计算机积分
Proceedings of the December 9-11, 1968, fall joint computer conference, part I Pub Date : 1968-12-09 DOI: 10.1145/1476589.1476667
J. Robert Ashley, Thomas E. Bullock
{"title":"Hybrid computer integration of partial differential equations by use of an assumed sum seperation of variables","authors":"J. Robert Ashley, Thomas E. Bullock","doi":"10.1145/1476589.1476667","DOIUrl":"https://doi.org/10.1145/1476589.1476667","url":null,"abstract":"The majority of numerical solution methods for partial differential equations by either analog or digital methods involve some form of finite differences technique, integral transforms, or Monto-Carlo methods. On the other hand, the most common classical analytical approach is based on some form of separation of variables and series expansions. The motivation for the research presented in this paper was to investigate the possibility of using the classical separation of variables approach as a basis for an efficient computational algorithm. The method studied was developed with a hybrid computer implemention in mind due to the ease in on-line operation in engineering design applications although it could be used for digital computation also.","PeriodicalId":294588,"journal":{"name":"Proceedings of the December 9-11, 1968, fall joint computer conference, part I","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1968-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124565352","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
Preliminary investigation of a hybrid method for solving partial differential equations 一种求解偏微分方程的混合方法的初步研究
Proceedings of the December 9-11, 1968, fall joint computer conference, part I Pub Date : 1968-12-09 DOI: 10.1145/1476589.1476669
S. K. Hsu, R. Howe
{"title":"Preliminary investigation of a hybrid method for solving partial differential equations","authors":"S. K. Hsu, R. Howe","doi":"10.1145/1476589.1476669","DOIUrl":"https://doi.org/10.1145/1476589.1476669","url":null,"abstract":"In the digital computer solution of a partial differential equation involving both time and spatial variables the partial differential equation is approximated by difference equations arising from the discretization of both the time and spatial variables. The number of difference equations equals the number of spatial mesh points or stations times the number of time increments. In the analog computer solution of a partial differential equation the equation may be approximated by a set of coupled ordinary differential equations, one equation for each station. The set of differential equations is then solved simultaneously. Unless the problem is simple and the number of stations is small, digital computation may take a long time and analog computation may involve much equipment. The present investigation is an attempt to indicate a profitable way to solve partial differential equations with hybrid computation, using only a limited number of high speed analog components for integration and employing the digital computer for function storage and playback.","PeriodicalId":294588,"journal":{"name":"Proceedings of the December 9-11, 1968, fall joint computer conference, part I","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1968-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116968399","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
Proceedings of the December 9-11, 1968, fall joint computer conference, part I 1968年12月9日至11日秋季计算机联合会议论文集，第一部分
Proceedings of the December 9-11, 1968, fall joint computer conference, part I Pub Date : 1900-01-01 DOI: 10.1145/1476706
{"title":"Proceedings of the December 9-11, 1968, fall joint computer conference, part I","authors":"","doi":"10.1145/1476706","DOIUrl":"https://doi.org/10.1145/1476706","url":null,"abstract":"","PeriodicalId":294588,"journal":{"name":"Proceedings of the December 9-11, 1968, fall joint computer conference, part I","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121374324","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: 16
Subsets and modular features of standard APT 标准APT的子集和模块化特征
Proceedings of the December 9-11, 1968, fall joint computer conference, part I Pub Date : 1899-12-30 DOI: 10.1145/1476589.1476602
Clarence G. Feldmann
{"title":"Subsets and modular features of standard APT","authors":"Clarence G. Feldmann","doi":"10.1145/1476589.1476602","DOIUrl":"https://doi.org/10.1145/1476589.1476602","url":null,"abstract":"The APT (Automatically Programmed Tool) N/C language was developed in 1956 at M.I.T.'s Servomechanisms Laboratory by D. T. Ross. Since that time, the language has been widely used at N/C installations in the United States for all categories of N/C programming. Since 1961, further APT System development has been directed by the Illinois Institute of Technology Research Institute under Dr. S. Hori. Use of the APT Language became so universally accepted that in 1963, the American Standards Association (now the United States of America Standards Institute) initiated an activity to generate a United States standard for the APT Language.","PeriodicalId":294588,"journal":{"name":"Proceedings of the December 9-11, 1968, fall joint computer conference, part I","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1899-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123177044","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
Computer simulation of a nonlinear blood flow model 非线性血流模型的计算机模拟
Proceedings of the December 9-11, 1968, fall joint computer conference, part I Pub Date : 1899-12-30 DOI: 10.1145/1476589.1476691
Herbert A. Crosby, M. Klukis
{"title":"Computer simulation of a nonlinear blood flow model","authors":"Herbert A. Crosby, M. Klukis","doi":"10.1145/1476589.1476691","DOIUrl":"https://doi.org/10.1145/1476589.1476691","url":null,"abstract":"The following equations are proposed in identifying a portion of the vascular system of a human. The derivation of the equations is similar to the approach used for a waterhammer analysis and is based on those of Dr. Victor Streeter, who has written extensively on the problem of waterhammer. The approach that is followed here is similar to that used for elastic waterhammer, which considers the flow of a fluid in an elastic pipe. In the human vascular system there is also the flow of a fluid in an elastic pipe. With the proper parameters and boundary conditions it is reasonable to assume that these derivations will lead to a set of equations which can be used to describe the dynamical properties of the vascular system. In order to apply these equations to the flow of blood it is necessary to make the following assumptions: 1. The blood vessel and elastic tube have a constant modulus of elasticity and a constant wave velocity. 2. The blood vessel is not permeable and is cylindrical with a constant internal diameter at rest. 3. Blood flow is laminar after leaving the upper portion of the aorta. 4. The loss of energy due to friction between the fluid and the walls of the blood vessel is proportional to the square of the velocity. 5. There are no discontinuities. This is to say that there is no branching along the section of blood vessel under consideration.","PeriodicalId":294588,"journal":{"name":"Proceedings of the December 9-11, 1968, fall joint computer conference, part I","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1899-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124984213","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
Non-linear interactive stepwise regression analsis in a time-sharing environment 分时环境下的非线性交互逐步回归分析
Proceedings of the December 9-11, 1968, fall joint computer conference, part I Pub Date : 1899-12-30 DOI: 10.1145/1476589.1476611
Leta Roberts Edwin, A. Edwin
{"title":"Non-linear interactive stepwise regression analsis in a time-sharing environment","authors":"Leta Roberts Edwin, A. Edwin","doi":"10.1145/1476589.1476611","DOIUrl":"https://doi.org/10.1145/1476589.1476611","url":null,"abstract":"Time-sharing techniques have created an environment that is capable of supporting a sophisticated generation of mathematical programs. This paper discusses one such program for non-linear stepwise regression analysis in an interactive mode. The principal improvements of this implementation over standard regression programs are the inclusion of the programmer in the control loop (thereby allowing on-line modification of the stepwise regression analysis and non-linear term selection procedures) and the ability of the program to modify itself, i.e., learn, from the results of previous passes of the analysis over the data.","PeriodicalId":294588,"journal":{"name":"Proceedings of the December 9-11, 1968, fall joint computer conference, part I","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1899-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125876044","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
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