ACM '71最新文献_第2页

Experimental implementations of mixed integer programming algorithms 混合整数规划算法的实验实现

ACM '71 Pub Date : 1900-01-01 DOI: 10.1145/800184.810498

M. Grigoriadis, L. Papayanopoulos, K. Spielberg

引用次数: 1

An implementation system for designing computer-based experiments 基于计算机的实验设计实现系统

ACM '71 Pub Date : 1900-01-01 DOI: 10.1145/800184.810480

R. Meeker, G. Shure, A. Cooperband

引用次数: 3

Design and Implementation of a Real Time Information Storage and Retrieval System 实时信息存储与检索系统的设计与实现

ACM '71 Pub Date : 1900-01-01 DOI: 10.1145/800184.810471

Steven J. Karpen

{"title":"Design and Implementation of a Real Time Information Storage and Retrieval System","authors":"Steven J. Karpen","doi":"10.1145/800184.810471","DOIUrl":"https://doi.org/10.1145/800184.810471","url":null,"abstract":"Presented here is a paper on the “Design and Implementation of a Real Time (On Line) Information Storage and Retrieval System”. Guidance is given into the design and testing of a hashing function for a volatile set of alphanumeric keys. The interrelationship between the hashing function and the Information Storage and Retrieval (IS&R) System is examined with respect to design criteria. Finally the design of the IS&R System itself is presented in terms of an attempt to optimize the Input/Output (I/O) time versus disk and memory storage for a volatile set of records. Built into the IS&R System design is the flexibility to optimize the systems performance under both the ideal and worst case hashing function design or performance. Emphasis, in the design, is placed on the I/O time required in updating, or inquiring, the file for a matched record retrieval. The following techniques were combined to form the original IS&R System: data structures, directory (dictionary) concept, bit directories, link listing (chaining), hashing function, and minimization of disk head movement.\u0000 The theory of the IS&R System is derived in general and is applicable to a variety of applications as long as the application possess the following requirements: a highly volatile set of records, a real time (or on line) retrieval requirement, difficulty in designing (or choosing) a hashing function due to the volatile set of keys, and heavy activity on updating, or inquiring, the file. Detailed algorithms of the system design are presented for this purpose.","PeriodicalId":126192,"journal":{"name":"ACM '71","volume":"33 1 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":"132317027","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

The impact of professionalization efforts on the computer manager (Panel) 专业化对计算机管理人员的影响(小组)

ACM '71 Pub Date : 1900-01-01 DOI: 10.1145/800184.810507

M. Gotterer

{"title":"The impact of professionalization efforts on the computer manager (Panel)","authors":"M. Gotterer","doi":"10.1145/800184.810507","DOIUrl":"https://doi.org/10.1145/800184.810507","url":null,"abstract":"The computer specialist has changed drastically in the last two decades. With the initial installation of computers people were recruited from many walks of life to work with this new technology. There was little educational opportunities except courses by hardware manufacturers and technical manuals. The initial group therefore had to learn much by trial and error and there was emphasis on communications between specialists for the purpose of sharing experience. Slowly an organized body of knowledge has been emergiing so that courses, both formal and informal, may be offered in many computer techniques. Curriculums for training computer specialists have been developed so that today past-high school education leading to the degrees of Associate, Bachelor, Master, and Doctor can be earned in such fields as computer science, management information systems, data processing information science and others. Another force in the development of computer specialists has been the professional societies. While comparatively few actually belong to these organizations it is reasonable to state that their influence has been greater than only the numbers of members. Attendance at meetings where technical data is exchanged has been high. Readership of publications is also high. The importance of these non academic information exchanges can not be overlooked or underestimated.","PeriodicalId":126192,"journal":{"name":"ACM '71","volume":"33 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":"116669469","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 real-time/time-share computer in a research and development environment 在研究和开发环境中的实时/分时计算机

ACM '71 Pub Date : 1900-01-01 DOI: 10.1145/800184.810481

C. D. Longerot, J. E. Marceau

引用次数: 0

Computational experience with a modification of an algorithm by Hammer and Rudeanu for 0-1 linear programming Hammer和Rudeanu对0-1线性规划算法的改进计算经验

ACM '71 Pub Date : 1900-01-01 DOI: 10.1145/800184.810517

F. Fiala

引用次数: 5

Better techniques for developing large scale fortran programs 开发大规模fortran程序的更好技术

ACM '71 Pub Date : 1900-01-01 DOI: 10.1145/800184.810521

Lavern Ghan