ACM-SE 14Pub Date : 1976-04-22DOI: 10.1145/503561.503588
D. O'Quinn
{"title":"Dial-up data communication line diagnosis","authors":"D. O'Quinn","doi":"10.1145/503561.503588","DOIUrl":"https://doi.org/10.1145/503561.503588","url":null,"abstract":"This paper describes a new technique developed to test the quality of dial-up computer lines. The normal telephone system tests cannot normally be used to evaluate these dial-up lines because of the short duration of an unanswered \"answer\" signal at the computer site. An analysis is given of the rationale and advantage of the technique developed for this purpose.","PeriodicalId":151957,"journal":{"name":"ACM-SE 14","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124828292","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}
ACM-SE 14Pub Date : 1976-04-22DOI: 10.1145/503561.503613
W. Crowley
{"title":"Tutorial program for educational research","authors":"W. Crowley","doi":"10.1145/503561.503613","DOIUrl":"https://doi.org/10.1145/503561.503613","url":null,"abstract":"Tutorial program which informs students of references pertaining to missed questions instead of correcting students as the tutorial is in progress.","PeriodicalId":151957,"journal":{"name":"ACM-SE 14","volume":"252 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123259328","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}
ACM-SE 14Pub Date : 1976-04-22DOI: 10.1145/503561.503595
R. Eckhouse, David L. Nelson
{"title":"Closely coupled multiprocessor systems","authors":"R. Eckhouse, David L. Nelson","doi":"10.1145/503561.503595","DOIUrl":"https://doi.org/10.1145/503561.503595","url":null,"abstract":"This paper presents the results of an effort to determine the performance, operational characteristics, hardware and software requirements, and the potential applications base for a symmetric system of closely coupled multiprocessors. Based on experience described herein, multiprocessing provides an effective way to increase the range of system performance with a single CPU product line, thereby serving a wider class of applications and market areas and providing explicit growth channels for applications whose computing requirements grow in time.A prototype system has been built using PDP-11/40 processors, multiported memories, and UNIBUS windows, for the purpose of determining its performance and operational characteristics. The RSX-11M real time operating system has been modified to support multiprocessing on this configuration. Theoretical analysis has provided a mathematical expression for system throughput as a function of the number of processors, memory banks, and memory utilization factors. Performance measurements have been related to theoretical analysis so that analytic means can predict the performance of configurations beyond the scope of the prototype hardware.For certain applications, the system cost-performance ratio is improved. The cost effectiveness of multiprocessing is contingent upon low processor/bus utilization of memory, or a high degree of parallelism in the memory system, such as interleaving or banking. Furthermore, realization of the potential afforded by multiprocessing hardware can only be attained in properly structured multiprogrammed operating systems.","PeriodicalId":151957,"journal":{"name":"ACM-SE 14","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128762525","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}
ACM-SE 14Pub Date : 1976-04-22DOI: 10.1145/503561.503583
F. Petry
{"title":"Two studies of subjects' ability to specify sample computations for a program synthesis system","authors":"F. Petry","doi":"10.1145/503561.503583","DOIUrl":"https://doi.org/10.1145/503561.503583","url":null,"abstract":"A system which has been previously developed for synthesizing programs from traces of example calculations is briefly described. With this system a person uses a light-pen interactive display for communication of his algorithm. He would first declare variables and data structures which would appear on the screen and then work through the steps for a calculation using the screen and light-pen in a scratch-pad fashion. A program is then produced by the system from the observed trace of the calculation.After such a system was created, it had to be tested to see how effective it is for human use. Two basic questions needed answering, first the ease with which the system would be learned and secondly how it compares for experienced users to other means for communicating algorithms such as programming. The results of experiments carried out to answer these questions are then given and discussed.","PeriodicalId":151957,"journal":{"name":"ACM-SE 14","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130581711","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}
ACM-SE 14Pub Date : 1976-04-22DOI: 10.1145/503561.503615
N. Coulter
{"title":"Using semantic information measures to evaluate learning strategies","authors":"N. Coulter","doi":"10.1145/503561.503615","DOIUrl":"https://doi.org/10.1145/503561.503615","url":null,"abstract":"Carnap (1) proposed measures for assigning probabilities as degrees of conformation to sentences in a formal language previously. This development in inductive logic permitted Carnap and Bar-Hillel (2) to outline semantic information measures (SIM) utilizing logical probabilities. Stapleton, Siegmann, and Coulter (3) demonstrated that certain learning experiments in both artificial intelligence and cognitive psychology can be characterized within the framework of languages specified by Carnap and Bar-Hillel. These experiments are called \"dialogue experiments\". The SIM can be employed to monitor information transfer during the experiment. This formalization also allows a dynamic representation of the problem space within the language.This research is extended here by a proof that specifies the relative efficiences of members of a class of learning strategies in dialogue experiments. These experiments concern the rote learning of associations among randomly matched predicates and individuals. The proof reveals a hierarchy of strategies that are ranked by rates of expected information gain relative to the SIM.","PeriodicalId":151957,"journal":{"name":"ACM-SE 14","volume":"96 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131264852","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}
ACM-SE 14Pub Date : 1976-04-22DOI: 10.1145/503561.503628
J. Chabert, T. F. Higginbotham
{"title":"An investigation of novice programmer errors in IBM 370 (OS) assembly language","authors":"J. Chabert, T. F. Higginbotham","doi":"10.1145/503561.503628","DOIUrl":"https://doi.org/10.1145/503561.503628","url":null,"abstract":"Novice Assembly Language programmer errors were \"trapped\" and tabulated according to type and frequency by programming assignment. In addition, the number of runs per programming assignment were investigated.Recommendations were made to facilitate the reduction of numbers of errors by novice IBM 370 (OS) Assembly Language Programmers.","PeriodicalId":151957,"journal":{"name":"ACM-SE 14","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127837806","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}
ACM-SE 14Pub Date : 1900-01-01DOI: 10.1145/503561.503619
Don Midgett
{"title":"DMERG","authors":"Don Midgett","doi":"10.1145/503561.503619","DOIUrl":"https://doi.org/10.1145/503561.503619","url":null,"abstract":"DMERG was designed as a tool to assist students and professors in Business and Economics at the University of Mississippi in considering the financial consequences of alternative corporate merger proposals.","PeriodicalId":151957,"journal":{"name":"ACM-SE 14","volume":"199 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":"124381627","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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