Barriers to electronic mail systems in developing countries

Abstract

Proponents of electronic mail systems (EMS) claim that they increase the productivity and efficiency of operations. Their use has mushroomed in the last five years in industrialized nations. The use of such systems in less developed countries is, however, practically nonexistent. This paper examines the barriers to their use in those countries. These barriers are divided into four categories: technical, economic, political, and social. Some strategies for dealing with those barriers are also presented.     

802.11n标准加快无线局域网的发展

做为一个旨在增加无线网络吞吐量的草案,802.11n最初被看作是一种民用技术。尽管如此,802.11n在企业级中也有很多关键应用,在下一代互联网的布设过程中也被寄予了厚望。在企业中,有很多应用对带宽很敏感,像ERP、CRM、工作组计算软件和一些无线应用对带宽的需求超过了802.11标准     

Guest Editorial

Knowledge Management Research & Practice -     

Initiation,Experimentation, Implementation of innovations: The case for Radio Frequency Identification Systems

This research primarily examines the stages hypothesis of the process of technology adoption by management personnel of organizations in the supply chain sector involving the Initiation, Experimentation, and Implementation stages. Further, this research examines key antecedents that may influence the various stages, including top management support, external pressure, and organization size. Using responses provided by top management representatives of 210 supply chain organizations on their organizations’ engagement with Radio Frequency Identification (RFID) technologies, this research finds that the stages hypothesis holds for RFID technologies. Specifically, organizations were seen to sequentially progress through the Initiation, Experimentation, and Implementation stages. Over 80% of organizations, who had reached the Implementation stage of adoption, had gone through the Initiation and Experimentation stages as well. Additionally, the data showed that the antecedents exerted varying levels of influences on the three stages. Top management support strongly influenced all three stages; external pressure influenced the Initiation and Implementation stages, and organizational size influenced Experimentation and Implementation stages. The paper discusses several implications for research and practice.     

Rooted in resistance: women teachers constructing counter‐pedagogies in post‐authoritarian Brazil

This study focuses upon the narratives of women educators (educadoras) who contributed to radical democratic school reforms in post‐authoritarian Brazil. We illustrate through three of the teachers’ narratives how their professional identities and actions were shaped partly by their experiences of resisting the military regime and by their participation in professional development opportunities that grew from liberatory social movements. Our analysis focuses on their efforts to construct counter‐pedagogies in their disciplines of history, mathematics, and physical education that resisted colonizing, authoritative practices and moved toward more liberatory, humanizing pedagogies. We consider how these counter‐pedagogies reflect both women’s ways of knowing that emphasize dialogue, collaboration, community, and the value of personal knowledge and relationships, as well as feminist principles of consciousness‐raising and social action. This analysis highlights possibilities and challenges of radical democratic reform in education by focusing on the work, experience, and identities of women educators engaged in the day‐to‐day efforts to bring about lasting change.     

Effects of fixed vs. self-suggested rest between sets in upper and lower body exercises performance

In its last position stand about strength training, the American College of Sports Medicine recommends a rest interval (RI) between sets ranging between 1 and 3?min, varying in accordance with the objective. However, there is no consensus regarding the optimal recovery between sets, and most studies have investigated fixed intervals. Therefore, the aim of this study was to analyse the effects of fixed versus self-suggested RI between sets in lower and upper body exercises performance. Twenty-seven healthy subjects (26?±?1.5; 75?±?15?kg; 175?±?12?cm) were randomly assigned into two groups: G1: lower body exercises and G2: upper body exercises. Squat and leg press 1 repetition maximum (1RM) were tested for the G1 and bench press and biceps curl 1RM for G2. After the 1RM tests, both groups performed three sets to concentric failure with 75% of 1RM in combination with different RIs (2?min or self-suggested) on separate days and the exercises performance was evaluated by the number of repetitions. The results demonstrated no significant differences in the number of repetitions between 2?min and self-suggested RIs that presented similar reductions with the sets progression. It was also shown that the self-suggested RI spent less time recovering than the 2?min RI group on average. This suggests that for individuals with previous experience, the self-suggested RI can be an effective option when using workloads commonly prescribed aiming hypertrophy. Also, the self-suggested RI can reduce the total training session duration, which can be a more time-effective strategy.