Basic program for the most diagnostic properties of groups from an identification matrix of percent positive characters

A BASIC program, DIACHAR, is given for determining the most diagnostic properties of groups or taxa scored for the percentage of presence—absence variables or characters. The program uses an identification matrix containing the percentages of positive values of characters in the groups. The most diagnostic states are those which have the majority state in the characters with the highest diagnostic scores, and these are listed for all the groups in the matrix.     

The relationship between computerization and performance: A strategy for maximizing the economic benefits of computerization

The relationship between computerization and several measures of overall firm performance is examined. Sample firms consisted of 138 wholesalers in a single industry with annual sales between one million and over ten million dollars. Three performance comparisons are presented: users versus non-users of computers, three levels of usage, and class of computer usage. Results indicate that computerization is related to overall performance. Non-users tend to be small firms with about average overall performance. On the other hand, firms owning computers and making extensive use of them in a variety of ways tend to be either very high or low performers. Possible explanations for these bi-modal results are presented.     

Frontiers of research and future directions in information and communication technology

Information and communication technology (ICT), characterized by continual innovation and rapid technological change, is having a tremendous impact on society. Research and development in ICT are being conducted throughout the technology sector, and fundamental research is being carried out in many university departments of electronics, computer science, and engineering. This paper deals with frontiers of research and trends in selected areas of ICT, including computer hardware, microelectronics, and semiconductor devices and materials—areas that are leading the innovations in ICT. It briefly describes emerging technological developments, and concludes with advances in software engineering.     

因子分析法建构音乐“意象图式”的设计研究

目的 研究因子分析法构建音乐“意象图式”的可行性,为提升视听沟通提供一种通用的设计方法。方法 以Bossa Nova音乐视觉设计为例,通过设计调查,将音乐的听觉感受转换成语意描述和图像描述,提取其中的图式因子,再结合因子分析法构建这种音乐风格的视觉意象图式,最后通过设计不同倾向性的方案,验证其合理性。结果 将因子分析法构建的意象图式应用到设计方案中,能够让人们在听音乐的情况下准确选择出视觉设计方案和音乐听觉的匹配程度。结论 意象图式作为一种潜在的结构性认知,能够通过因子分析法准确构建;将因子分析法构建的意象图式应用到视听设计实践中,能够提升提设计过程中感官跨模转换的准确性和包容性,进而增强设计方案与群体感知的匹配程度。     

Reflecting upon the Past,Sitting with the Present,and Charting our Future: Gail Hawisher and Cynthia,Selfe Discussing the Community of Computers & Composition

This interview with Gail Hawisher and Cynthia Selfe highlights themes of collaboration and access, in addition to the importance of the work people in the community of computers and writing contribute nationally and internationally to the field, to rhetoric and composition, and to other disciplines. Both Hawisher and Self reflect upon thirty years of scholarship in Computers and Composition as well as discuss present initiatives with the Digital Archives of Literacy Narratives and Computers and Composition Digital Press, in addition to charting our future with a turn to the global.     

Reducing computer operating costs

This paper presents a cost reduction strategy for computer operating expenses. Different ratios are proposed to help decision makers in understanding the impact of computer operating cost on productivity and profitability. Computer Operating Cost Self-Assessment Checklist is provided.     

The evolution of a national research plan for computers in education in The Netherlands

Abstract This paper describes the evolution of a national research plan for computers and education in The Netherlands. This approach was initiated in 1983 and includes two phases: one from 1984 until 1988 and one from 1989 until 1992. The paper describes the research plans for the second phase, based upon the experiences of the first, and draws some general conclusions about the development of national research plans for computers in education.     

因特网在计算机课程课堂教学中的应用

在计算机科学飞速发展的今天,因特网已成为一种重要的教学工具。本文指出了利用因特网进行计算机课程课堂教学的必要性,探讨了如何利用因特网资源进行计算机课程的教学,并分析了借助因特网进行计算机课程教学对教师的要求。