The effect of network size on intra-network knowledge processes

This paper addresses a neglected topic in the knowledge management literature: how the size of a network of actors affects the nature of intra-network social relations and knowledge processes. It makes a theoretical contribution to developing understanding in this area drawing on a range of literatures including practice-based perspectives on knowledge, the literature on the embeddedness of social relations, and relevant knowledge management literature. The central focus of this paper is on the relationship between network size, network density, and how these variables affect intra-network knowledge processes. It suggests that as network size increases network density is likely to decrease (as it becomes problematic for the actors in such networks to retain strong ties with a significant proportion of the network's members), which it will be suggested has significant ramifications for intra-network knowledge processes. This paper concludes by reflecting on the implications of the ideas developed for network-based forms of organizing, and innovation processes.     

The evaluation of faculty development programs

This article reviews literature pertinent to the evaluation of faculty development programs and presents data from several studies conducted at two institutions. These data were consistent with those previously reported in that faculty participants consistently expressed satisfaction with development services. In addition, one study found that most faculty members voluntarily took some action to improve their instructional effectiveness, though only a minority pursued these efforts in depth. Volunteers who worked intensively with a faculty development consultant improved more on objective measures of effectiveness than did those who were only superficially involved in improvement efforts; those who received no consultative assistance failed to improve significantly. Evidence from a final study provided a control for faculty motivation and led to the conclusion that improvement was contingent both on faculty desire to improve and on the availability of professional assistance.     

Pigeons see the Ponzo illusion

Three experiments were performed to address factors contributing to the Ponzo illusion. In Experiment 1, pigeons learned to peck at the longer of two bars in varying line contexts. When these lines converged, the birds had difficulty in learning several patterns in which a Ponzo illusion would reduce the perceived difference. In Experiment 2, the subjects chose one response if a stimulus bar was longer than a predetermined length and a second response for shorter bars. The subjects were more likely to choose “long” as the stimulus bar approached the apex of converging lines. These results suggested that pigeons experience the Ponzo illusion. In Experiment 3, the effects of contexts that did and did not form a texture gradient were compared. The magnitude of the illusion did not differ according to context lines. This result failed to support a perspective theory of the Ponzo illusion.     

Research Abstracts

Educational technology research and development -     

Root causes of errant ordered radiology exams: Results of a needs assessment

A comprehensive needs assessment was conducted at ATA hospital to determine the root causes of a high number of errant radiology orders from requesting physicians. The Human Performance Technology Model, Gilbert's Behavior Engineering Model, and Rummler and Brache's Nine Performance Variables Model guided the needs assessment process. Three solutions were proposed. The development of the long‐term solution, a software utility, has been initiated. The Behavior Engineering Model was used to identify possible solutions to post‐training performance gaps identified during the evaluation.     

Career Academies: Effective Structures to Promote College and Career Readiness

Career academies promote smaller learning communities within high schools, creating personalized learning environments while promoting students’ readiness for college and careers. After describing the career academy structure, we present four research-based aspects that can assist school leaders and teachers in developing and implementing academies. We include practical examples from the Metro Nashville Public Schools, noting how educators have collaborated with civic agencies, businesses, and postsecondary partners to increase the graduation rate and improve student learning outcomes. Career academies can be effective in preparing students for college and careers, while also providing economic benefits to the community.     

Evaluation of Handheld Computers for Direct Systematic Classroom Observation

Through this study the authors evaluate outcomes associated with the use of handheld computers by interventionists in improving the efficiency of direct systematic classroom observation. Information from observations is used by interventionists for treatment planning and evaluation. In this study, interventionists were trained to use personal digital assistants with classroom observational software for use with students who displayed low levels of academic engagement. Results indicated that the personal digital assistants and observational software were perceived as user-friendly, increased computer self-efficacy, and facilitated treatment planning and evaluation. Discussion focuses on implications for use of handheld computers and mobile devices by interventionists.