ACM Sigmis Database最新文献_第8页

Review of "Computer Security Handbook, by Computer Security Research Group." Macmillan Information, New York, 1973 计算机安全研究小组对“计算机安全手册”的审查。麦克米伦信息公司，纽约，1973年

ACM Sigmis Database Pub Date : 1975-04-01 DOI: 10.1145/1017617.1017623

T. C. Willoughby

{"title":"Review of \"Computer Security Handbook, by Computer Security Research Group.\" Macmillan Information, New York, 1973","authors":"T. C. Willoughby","doi":"10.1145/1017617.1017623","DOIUrl":"https://doi.org/10.1145/1017617.1017623","url":null,"abstract":"Liu discussed the close relationship of structured programming to other information systems technol-ogy/methodology. He pointed out that maintainability of systems-especially of data base systems-is one of the chief advantages of using structured programming. In conclusion Liu said: \"As effective as structured programming is in reducing the cost of producing programs and increasing the lines of debugged code per man-day, it is not going to resolve the problems of data base (or any other business information system) that was designed by systems analysts who have little understanding of the company operation and the company attitude. Systems designers must be responsive to the users. Users-contrary to what many systems design people think-know their own field and know what they need. Also, the more flexible the designed system is, the better and longer life it will have-though more difficult to implement it.\" The third speaker, Paul Richey, a computer process designer and in-house intructor of Structured Programming and Program Design, also of P.G.&E., then got down to the essence of structured programming. He concurred that the basic control logic elements in structured programming (with the top-down approach) were: SEQUENCE, IFTHENELSE, and DO-WHILE. \"However,\" Richey said, \"to extend the power of COBOL, And to make COBOL both readable and maintainable, three more logic elements have to be added: CASE, DOUNTIL, nd GOTO.\" Richey defined SEWUENCE as nothing more than concatenation of two COBOL primatives, a COBOL primative with a control logic element and two control logic elements. IFTHENELSE was explained as \"the basic control logic element that allows the program to select the proper action from two actions.\" \"In some instances,\" Richey stated, \"one of the actions can be null. The important consequence of executing an IFTHENELSE is that no matter which action is selected, on completion, the control is passed to the same point. \"Often, one of the selected actions is itself an IFTH-ENELSE. This is called a nested IF About which there is still a lot of controversy. Because of certain properties of COBOL, nested IFs can become cumbersome, both to read and to maintain. When this happens the GOTO will be used to de-nest the IF. However, all branches willgo downward. One final point: uniform indentation of IF statements is a must to maintain readability.\" Then DOWHILE \"allows the program to repeat an action more than once, depending on the condition. This, of course, is looping. But since DOWHILE checks the …","PeriodicalId":152518,"journal":{"name":"ACM Sigmis Database","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129061938","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

Review of "Data Processing Project Management, by Thomas R. Gildersleeve." Van Nostrand. Reinhold Company, New York, 1974 对《数据处理项目管理》的评论，作者:Thomas R. Gildersleeve。Van Nostrand。Reinhold公司，纽约，1974年

ACM Sigmis Database Pub Date : 1975-04-01 DOI: 10.1145/1017617.1017621

T. C. Willoughby

引用次数: 38

Review of "Managing the Data Resource Function, by Richard L. Nolan." West Publishing Co., St. Paul, 1974 《管理数据资源功能》书评，作者:Richard L. Nolan。西部出版公司，圣保罗，1974

ACM Sigmis Database Pub Date : 1974-12-31 DOI: 10.1145/1017558.1017564

T. C. Willoughby

引用次数: 0

Review of "System Analysis Techniques, by J. Daniel Couger and Robert W. Knapp." John Wiley & Sones, New York, 1974 对“系统分析技术，J. Daniel Couger和Robert W. Knapp”的评论。John Wiley & Sones，纽约，1974年

ACM Sigmis Database Pub Date : 1974-12-31 DOI: 10.1145/1017558.1017563

T. C. Willoughby

引用次数: 4

Review of "Data Processing Systems: Their Performance, Measurement and Improvement, by Saul Stimler." 《数据处理系统:它们的性能、测量和改进》，索尔·斯蒂姆勒著。

ACM Sigmis Database Pub Date : 1974-07-01 DOI: 10.1145/1017551.1017556

H. Lucas

引用次数: 0

Is this the problem in commercial applications programming 这是商业应用程序编程中的问题吗

ACM Sigmis Database Pub Date : 1974-04-01 DOI: 10.1145/2579458.2579463

J. Connor

{"title":"Is this the problem in commercial applications programming","authors":"J. Connor","doi":"10.1145/2579458.2579463","DOIUrl":"https://doi.org/10.1145/2579458.2579463","url":null,"abstract":"The purpose of this essay is to locate someone in the academic community who might be interested in a major commercial computer problem totally ignored at ACM conventions and into choose an example intended to be significant-the 25th anniversary issue of ACM Communications. Ninety percent of commercial applications programmers have this environment: The hardware, operating system and language exist. No one wants them touched. In a language like COBOL, PL/1 or Assembler, I must write an applications program. How do I proceed if I already know the language and the operating system? If anyone has been considering that problem, it has escaped my attention. Because the problems seem more challenging in hardware, operating systems and languages, the computer community represented at AFIPS meetings and in ACM literature explores those problems. As an illustration of what might be done, I sketch very briefly some possibilities we have been exploring. The computer job is the proper design unit for commercial applications programming. For a model of office work of wide relevance, a computer job can be presented with a structure invariant to the application. Excluding sorts, that invariant job has three steps. Each has five program parts. In some steps, some parts are empty. Four of the five parts do processing. The logic in them is application dependent, but their structure is invariant. It has these features: • The organization is modular and the module is rigorously defined. • The module is independent; given arguments always produce the same values. • The basis for dividing a program part into modules (including one module) is record-type. (The selection 14 of record types requires a value judgment.) The fifth program part accesses all the records and transfers program execution within itself and among the processing parts. Continuous processing and batch processing differ only in this part. For thP fifth part, the logic-at the level just above coding-is application independent and can be presented as a series of logic diagrams. All the data in all the reports in one system*-including all levels of totals, all page and column headings (unless they are preprinted) and all constants but excluding duplicates-are the Information Set. (I) • All the reports produced in one cycle (i.e.-for transactions over one period of time) are produced by one computer-job. That subset of I is 1,. • All the reports produced in one step of a job are a subset of 1,. …","PeriodicalId":152518,"journal":{"name":"ACM Sigmis Database","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130289859","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

Observations on the man/computer complex of inland steel 内陆钢铁的人机复合体观察

ACM Sigmis Database Pub Date : 1973-12-01 DOI: 10.1145/2579442.2579450

A. Orden

引用次数: 0

Forecasting: a powerful management tool 预测:一个强大的管理工具

ACM Sigmis Database Pub Date : 1973-09-01 DOI: 10.1145/1017545.1017549

W. R. Bagwell

{"title":"Forecasting: a powerful management tool","authors":"W. R. Bagwell","doi":"10.1145/1017545.1017549","DOIUrl":"https://doi.org/10.1145/1017545.1017549","url":null,"abstract":"Forecasting future financial results based on curren t management decisions is a major problem in mos t industries. Even though it is impossible to predic t precise dollar amounts for financial items to b e reported years after decisions are made, managemen t must be aware of the most probable range of value s for these various items. A major cause of this problem is the inability o f management to readily isolate mathematical relationships which may exist among various financial item s and apply these relationships in projecting futur e financial results. Isolation and application of mathematical relationships in many cases has been bypassed . Rules-of-thumb have been utilized by management due to the lack of knowledge of currentl y available statistical processes or the high cost an d extensive time required. The present speeds of computers make the use of rules-of-thumb unnecessary , as we are now capable of processing involved statistical techniques such as the Monte Carlo Technique . Management must be aware of the complex financial results created from curr ent decisions, and on e way to accomplish this is through the use of compute r models. Management must not only be aware o f occurrences in the industry, but it must continue t o be aware of the many changes in progress. It is important that present and potential management b e trained effectively and quickly in each facet of th e industry. With the large increase in the volume o f information, it is imperative that new techniques fo r training management in all areas be employed. A forecasting model has been designed an d implemented for the property and liability insuranc e industry at Georgia State University. The objectiv e of this model is to utilize mathematical relationship s that exist among specific property and liability annua l statement items to forecast future annual statemen t results. The computer model, designed and programme d by the author, is utilized to show the application-o f the mathematical relationships obtained in forecast-The column in this issue is concerned with \"Forecast-ing—A Powerful Management Tool,\" and was prepared by W. Ray Bagwell Ph .D ., MAA ., an assistan t professor of insurance and information systems a t ing annual statement results based on current management decisions for a mythical company, Mode l Property and Liability Insurance Company. Some of the relationships isolated were as follows : …","PeriodicalId":152518,"journal":{"name":"ACM Sigmis Database","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1973-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127596462","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

Review of "The Assault on Privacy, by Arthur R. Miller." University of Michigan Press, 1971 书评《对隐私的侵犯》，作者阿瑟·r·米勒。密歇根大学出版社，1971年

ACM Sigmis Database Pub Date : 1972-12-31 DOI: 10.1145/1017625.1017632

T. C. Willoughby

{"title":"Review of \"The Assault on Privacy, by Arthur R. Miller.\" University of Michigan Press, 1971","authors":"T. C. Willoughby","doi":"10.1145/1017625.1017632","DOIUrl":"https://doi.org/10.1145/1017625.1017632","url":null,"abstract":"If, from the title, the reader expects this book to be a muckraking examination of the impact of modern technology on privacy he will be quickly disabused. Assault o n Privacy is a careful, accurate and largely dispassionate vie w of the relationship between computers and privacy. Since the book is intended for a general audience the description s of computers and systems using computers will be old ha t to data processors. The chapters describing the tenuou s legal concept of privacy were of greatest interest to this reviewer and were well done. The chapter describin g psychological testing repeats the standard criticisms without asking whether tests better serve the testee than interviews or credentials. The efficiency expert favors a National Data Bank as a way of avoiding the unnecessary cost of maintaining som e 1500 separate federal government data banks. The human-ist rues the loss of privacy. Miller balances these concept s by suggesting that there is little privacy in the presen t arrangement and that the National Data Bank might b e viable if adequate legal safeguards were established. Every data processor using consumer files should read thi s book. First, because he is a consumer. Second, because h e needs to know the criticisms of his profession. Lastly, because if data processors understand the issues they may b e able to design efficient and private systems. Dear Sir , Though it may be a little late, I want to make som e comments on the Spring 1972 edition of DATA BASE. The article \"Performance Evaluation and the Managemen t of Information Services\" dealt with a lot of techniques fo r evaluating hardware (computer systems) and software. What I didn't find in the article : Many companies have t o compare Data Base Management Systems to make thei r choice of the systems which can be leased on the market. There was no comment at all on this special problem. Is i t already solved in the USA? In the literature available to m e I haven't found any article which extensively in practic e deals with the requirements for an ideal system (excep t perhaps DATA BASE, Vol. 3, No. 3 by Mr. Van Cour t Hare, Jr. and some standards like CODASYL \"Feature Analysis . . .\" or FRY/GOSDEN or DOWKANT), with the influence of the commercial problems to be solved, the analysi s and …","PeriodicalId":152518,"journal":{"name":"ACM Sigmis Database","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1972-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126728770","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

Review of "Management Decision Systems, by M. S. Scott Morton." Harvard University Press, 1971 对《管理决策系统》(ms . Scott Morton著)的评论。哈佛大学出版社，1971年

ACM Sigmis Database Pub Date : 1972-12-31 DOI: 10.1145/1017625.1017631

T. C. Willoughby

引用次数: 0