A CDP1802 microprocessor based stand-alone system (target system) has been designed to control a two-color pyrometer (TCP) system remotely and to process the temperature information from a simulated magnetohydrodynamics (MHD) test facility, at Mississippi State University. The analog signals from two pyrometer detectors are digitized and the temperature and emissivity of the surface are computed. The results are displayed on a 20-column printer. Data at various emissivity settings are collected with the help of a stepper motor. The measurements may be done individually or in a continuous mode. A sequence of events may be programmed into the system through a 4×4 key matrix. Software has been developed in FORTH, a highly structured language. The system design and development has been accomplished through stepwise refinement.
{"title":"Design of a microprocessor based programmable system to process temperature information from a hot surface","authors":"T. Philip, S. Jeglinski, R. Benton, R. Cook","doi":"10.1145/503896.503918","DOIUrl":"https://doi.org/10.1145/503896.503918","url":null,"abstract":"A CDP1802 microprocessor based stand-alone system (target system) has been designed to control a two-color pyrometer (TCP) system remotely and to process the temperature information from a simulated magnetohydrodynamics (MHD) test facility, at Mississippi State University. The analog signals from two pyrometer detectors are digitized and the temperature and emissivity of the surface are computed. The results are displayed on a 20-column printer. Data at various emissivity settings are collected with the help of a stepper motor. The measurements may be done individually or in a continuous mode. A sequence of events may be programmed into the system through a 4×4 key matrix. Software has been developed in FORTH, a highly structured language. The system design and development has been accomplished through stepwise refinement.","PeriodicalId":184493,"journal":{"name":"ACM-SE 20","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126659555","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}
This paper describes a network that uses standard links to connect heterogeneous types of node. The network is designed to facilitate interprocess communication among multiple processes. The ISO model is discussed, and the relationship between the network design and the standard is examined.
{"title":"Some practical considerations in the design of local computer networks","authors":"M. Paulk","doi":"10.1145/503896.503897","DOIUrl":"https://doi.org/10.1145/503896.503897","url":null,"abstract":"This paper describes a network that uses standard links to connect heterogeneous types of node. The network is designed to facilitate interprocess communication among multiple processes. The ISO model is discussed, and the relationship between the network design and the standard is examined.","PeriodicalId":184493,"journal":{"name":"ACM-SE 20","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131161599","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}
The article discusses a Management Information System (MIS) developed by the authors, with Intel contractor support, for the Health Effects Research Laboratory, U. S. Environmental Protection Agency, located in the Research Triangle Park, North Carolina.The article describes the reasons for choosing SYSTEM 2000 as the data base language, the data base structure, and the application involving a unique mating between a data base, a Hendrix type-reader and the Lanier (LTE-2D) word-processing equipment.
{"title":"EPA - HERL/RTP: a DBMS application using word processing","authors":"J. Baston, Ann H. Akland","doi":"10.1145/503896.503906","DOIUrl":"https://doi.org/10.1145/503896.503906","url":null,"abstract":"The article discusses a Management Information System (MIS) developed by the authors, with Intel contractor support, for the Health Effects Research Laboratory, U. S. Environmental Protection Agency, located in the Research Triangle Park, North Carolina.The article describes the reasons for choosing SYSTEM 2000 as the data base language, the data base structure, and the application involving a unique mating between a data base, a Hendrix type-reader and the Lanier (LTE-2D) word-processing equipment.","PeriodicalId":184493,"journal":{"name":"ACM-SE 20","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113969470","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}
The use of a video display terminal (VDT) with "block mode" option can provide a natural transition from paper forms. The interaction of a user with a VDT-form is outlined in relation to a patient's data and the functions of data entry, display, update, and deletion. The invocation of a function is kept simple with the use of abreviations as command words and the requirement of a command word as the first element sent to the computer. The strong points include: 1) a simple approach for the user, 2) a process can be aborted at any point, and 3) functions that can be used are displayed at all times. The weak points are: 1) software interface problems and 2) terminal cost. Block mode is discussed in relation to a modular approach and a distributive system.
{"title":"User-computer interaction employing block mode data transfer","authors":"E. G. Hayeck","doi":"10.1145/503896.503905","DOIUrl":"https://doi.org/10.1145/503896.503905","url":null,"abstract":"The use of a video display terminal (VDT) with \"block mode\" option can provide a natural transition from paper forms. The interaction of a user with a VDT-form is outlined in relation to a patient's data and the functions of data entry, display, update, and deletion. The invocation of a function is kept simple with the use of abreviations as command words and the requirement of a command word as the first element sent to the computer. The strong points include: 1) a simple approach for the user, 2) a process can be aborted at any point, and 3) functions that can be used are displayed at all times. The weak points are: 1) software interface problems and 2) terminal cost. Block mode is discussed in relation to a modular approach and a distributive system.","PeriodicalId":184493,"journal":{"name":"ACM-SE 20","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132524853","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}
The decomposition encoding of an n-bit vector V is an approach to the problem of how best to encode a bit vector under the constraints that this vector be encoded into blocks of t bits, and that access time for each bit of the original vector be constant, i.e. "random access." This method involves encoding the vector as two separate matrices F1 and F2. Essential to the method is the decomposition of N--the indexing set for V--by means of an injection (h1,h2): N --> R1 x R2 : m │--> (h1(m),h2(m)). Decoding involves some simply computed function f(F1[h1(m);],F2[h2(m);]). The emphasis in this paper is upon compact encodings for static vectors. For one choice of f--XOR decomposition encoding--it is shown by linear algebraic techniques that a decomposition encoding requiring the minimal t for a given (h1,h2) pair can be determined. Of more practical interest is minimization of the total number of bits in the encoding for all possible injections (h1,h2). Experimental results using a number of easily computed (h1,h2) pairs show that compactions to one half of the ordinary packed representation can be achieved via decomposition encoding for relatively sparse bit vectors.
n位向量V的分解编码是一种解决如何在约束下对位向量进行最佳编码的方法，该约束是将该向量编码为t位的块，并且原始向量的每个位的访问时间为常数，即。“随机访问。”这种方法涉及到将向量编码为两个单独的矩阵F1和F2。该方法的关键是通过注入(h1,h2)分解N——V的索引集:N—> R1 x R2: m│—> (h1(m)，h2(m))。解码涉及到一些简单的计算函数f(F1[h1(m);]，F2[h2(m);])。本文的重点是静态向量的压缩编码。对于f的一种选择——XOR分解编码——线性代数技术表明，对于给定的(h1,h2)对，可以确定需要最小t的分解编码。更实际的兴趣是最小化编码中所有可能的注入(h1,h2)的总比特数。使用一些易于计算的(h1,h2)对的实验结果表明，通过对相对稀疏的位向量进行分解编码，可以实现对普通打包表示的一半的压缩。
{"title":"Bit vector encoding via decomposition","authors":"R. Jeffords","doi":"10.1145/503896.503933","DOIUrl":"https://doi.org/10.1145/503896.503933","url":null,"abstract":"The decomposition encoding of an n-bit vector V is an approach to the problem of how best to encode a bit vector under the constraints that this vector be encoded into blocks of t bits, and that access time for each bit of the original vector be constant, i.e. \"random access.\" This method involves encoding the vector as two separate matrices F1 and F2. Essential to the method is the decomposition of N--the indexing set for V--by means of an injection (h1,h2): N --> R1 x R2 : m │--> (h1(m),h2(m)). Decoding involves some simply computed function f(F1[h1(m);],F2[h2(m);]). The emphasis in this paper is upon compact encodings for static vectors. For one choice of f--XOR decomposition encoding--it is shown by linear algebraic techniques that a decomposition encoding requiring the minimal t for a given (h1,h2) pair can be determined. Of more practical interest is minimization of the total number of bits in the encoding for all possible injections (h1,h2). Experimental results using a number of easily computed (h1,h2) pairs show that compactions to one half of the ordinary packed representation can be achieved via decomposition encoding for relatively sparse bit vectors.","PeriodicalId":184493,"journal":{"name":"ACM-SE 20","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129019379","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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