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Communities with high levels of social capital are likely to have a higher quality of life than communities with low social capital This is due to the greater ability of such communities to organize and mobilize effectively for collective action because they have high levels of social trust, social networks, and well-established norms of mutuality (the(More)
The effects of several metals on microbial methane, carbon dioxide, and sulfide production and microbial ATP were examined in sediments from Spartina alterniflora communities. Anaerobically homogenized sediments were amended with 1,000 ppm (ratio of weight of metal to dry weight of sediment) of various metals. Time courses in controls were similar for(More)
Bandura's social cognitive construct " perceived self-efficacy " has been used widely to understand individual behavior as a function of domain-specific beliefs about personal capacities. Collective efficacy is the extension of the self-efficacy construct to organizations and groups; it refers to beliefs about collective capacities in specific domains. Our(More)
The concept map is a visual tool, a nontraditional assessment tool designed to specify individual mental models through graphic representation. This study investigated relative sensitivity of concept map subscales to well or poorly defined mental models of a targeted domain (learner achievement). Fifty-eight preservice teachers completed a computer-based(More)
Introduction Can the use of mobile phones by low computer literacy populations help them also learn computing? This paper argues that it can help. We are claiming that theories of metaphors and mental models, as well as the role of social networks in the diffusion of innovation, suggest that people with low computer literacy could use their experience with(More)
CyGaMEs, which stands for Cyberlearn-ing through Game-based, Metaphor Enhanced Learning Objects, is a formal approach to the design of instructional learning environments through applied structure mapping theory. This paper summarizes the CyGaMEs research program: its origin; the CyGaMEs approach to design, development, and assessment; the experimental(More)