This thesis reports on the results of a quantitative study of various barriers to knowledge sharing in a virtual community of practice within Sigma Kudos, a Swedish multinational organization. The study was undertaken to investigate the under-utilization of a virtual "teamroom". Members' views showed that the biggest barrier involved the way in which people chose to share their knowledge; the respondents preferred sharing knowledge in their existing face-to-face networks. Face-to-face sharing mainly seemed to occur between individuals who had a common ground and shared experiences, and between individuals who were in convenient proximity to each other. Time constraints in combination with perceived lack of intranet site structure implied a redundancy of the teamroom as yet another internal site. Another prominent set of barriers that emerged from the findings was related to aspects of uncertainty and unfamiliarity with the teamroom. Additionally, survey comments revealed the use of teamroom features to be a barrier. To enable co-evolved knowledge structures to occur via the community, it is necessary for management to understand face-to-face sharing behavior in terms of implicit and tacit knowledge. It is vital to change the perception of teamroom sharing as an extra task requiring more time. Moreover, the teamroom needs to be distinguished in context of the greater intranet structure, as well as when it comes to the different sections of the community itself. To foster knowledge sharing in the teamroom, it is also important to define and communicate the strategic meaning of it.

Technology enhancements of the past two decades have not successfully overcome the problem of low motivation in Kindergarten through Grade 12 (K-12). Motivation and math achievement have been identified as major factors contributing to the high school dropout problem (30-50% in traditional/online programs). The impact of extrinsic rewards on achievement and the dropout problem, however, remains a subject of debate. This dissertation seeks first to address this debate, through an investigation of reward system effectiveness in the blended learning environment, on at-risk students with varied intrinsic motivation factor scores. Next, the dissertation explores the importance of fit between students' reward perceptions and reward values when motivating student progress. To this end, the author has developed a new 6-factor motivation orientation model for students in blended learning environments, and a learner-configurable progress-based reward system (PBR) for Learner Content Management Systems (LCMS) based on this model. The hypothesized model was tested for fit with a sample of 353 at-risk high school math students in Miami, Florida. The PBR was developed based upon the findings from interviews with subject matter experts and students, factor and regression analyses used to test hypotheses about learner motivation and predict learner progress. Conclusions from the study informed the design of an integrated PBR. A 6-factor motivation orientation model was found to explain more of the variance (74%) in student motivation than earlier models. Contrary to Deci et al. (1999), hypothesis test results did not confirm adversarial extrinsic rewards/intrinsic motivation relationships. Furthermore, consistent with person-environment fit theory, learners demonstrated superior progress and achievement when extrinsic reward perceptions and values were well aligned. With critical input from flexible learning theorists, teachers, and students, the emerging PBR design may ultimately be integrated through mobile learning applications and social media, within LCMS solutions such as Blackboard, and systems commonly used in K-12, such as Apex. Although beyond the scope of the dissertation, the emerging Web-based design promises to play an important role in engaging a K-12 Community of Practice (CoP), consisting of telecommunications partners, game developers, retailers, and education stakeholders sharing a significant interest in future innovations that address the dropout problem.

WhatsApp’s growing presence in the developing world has led to a grassroots movement of messaging groups designed to serve relevant needs for small scale farmers in Kenya. These groups provide the means for as many as 256 members to ask questions, share experiences and solutions, gain access to information, and access markets for their products. This research project examines the use of these WhatsApp groups for agriculture in Kenya. The project seeks to understand the existing barriers to participation, and the use, benefits, and shortcomings of these groups for their members. Research findings indicated that farmers’ overall access to smart phones is a substantial barrier to their participation in groups for agriculture, and these barriers are expectedly more difficult for the poorest and most vulnerable (in which intersectional poverty creates additional barriers). However, while each group can vary significantly, members report that WhatsApp groups as a whole overwhelmingly benefit their livelihoods and practice. Systemic and societal change occurs when the experiences and successes of one individual are shared with a larger group – leading to rapid and shared prosperity. As each individual learns a new skill, technique, or input, the group must also learn and benefit from that knowledge. WhatsApp provides the means and the platform for this type of information exchange to occur at scale, and with individuals who would otherwise be unlikely to communicate. This research project examines the emerging use of grassroots WhatsApp groups as a potential example of this positive and inclusive approach to extension and development in agricultural communities.