Global ETD Search

1	The Influence of Functional Roles on the Effectiveness of Virtual Teams Leu, Wan-Yu 28 July 2000 (has links) When a face-to-face work group tries to accomplish its collective goals, the effectiveness and maturity of a group hinge on the combination of the functional roles performed by group members¡X task-oriented roles and group maintenance roles [Klopf, 1981; Benne et. al., 1948]. This research examines the phenomenon of group developmental processes, the functional roles performed by group members, and the relationships among certain critical functional roles, group maturity, and team effectiveness in the learning-task oriented virtual team setting. The samples are 24 project teams composed by part-time graduate students in a cyber university. After analyzing the group discussion sections by content analysis method, the development processes of these virtual teams demonstrate Tuckman¡¦s five-stage model of group development: forming, storming, norming, performing and adjourning. For the groups on forming stage, there are only two group maintenance roles ¡X initiator and information seeker/giver, performing by virtual team members. Conflicts between team members are not obvious due to virtual teams¡¦ learning-oriented task. Three group maintenance roles ¡X encourager, gatekeeper, and follower will encourage the occurrence of group cohesiveness and lead virtual teams to norming stage. Furthermore, when groups mature, four emerging task-oriented roles ¡X opinion seeker/giver, coordinator, orienter and evaluator will enhance the virtual team effectiveness. Negative functional roles (process-hindering roles) are rare due to virtual team¡¦s learning-oriented task. Therefore, this result indicates that members in a virtual team should play different critical positive functional roles according to their group¡¦s developmental stages, and it will facilitate group evolvement and improve team effectiveness. group development stages functional roles team effectiveness virtual team
2	Functional importance of snakes in a strandveld ecosystem Forgus, Juan-Jacques January 2018 (has links) Magister Scientiae (Biodiversity and Conservation Biology) - MSc (Biodiv & Cons Biol) / Gaps in our knowledge of the functional roles of snakes within ecosystems limit our ability to predict the potentially cascading effects their removal from an ecosystem might create. Extirpation of snake species could potentially result in losses of ecosystem functionality if those taxa are ecologically unique. I used pitfall and funnel trap arrays, artificial cover object surveys, active searching, and passive camera trapping, as well as pre-existing faunal diversity data to identify terrestrial tetrapod species within the Koeberg Private Nature Reserve. This resulted in a list of 265 species, of which 13 were snakes. I then gathered data on dietary and four additional functional traits for each species from the literature. Next, using hierarchical and partitioning around medoids clustering, I identified ten broad dietary guilds and 54 functional guilds within the terrestrial tetrapod community. Of the dietary guilds Dasypeltis scabra was the only snake species that formed a unique single species guild and was one of four snake species (Pseudaspis cana, Homoroselaps lacteus and Lamprophis guttatus) to form four unique single species functional guilds. The remaining snakes clustered together within groups of other vertebrate predators. Functional diversity analysis was then used to simulate losing eight major taxonomic groups (birds, passerines, non-passerines, mammals, reptiles, snakes, non-snake reptiles and amphibians) and gauge the effects of those losses on overall community dietary and functional diversity. Functional diversity analysis revealed that the loss of certain snake species resulted in disproportionate losses of overall community dietary and functional diversity while losing others had negligible effects. These findings provide ambivalent support for the dietary and functional uniqueness of snakes suggesting that certain snake species are fulfilling unique functional roles within the ecosystem. Additionally, it is likely that losing those non-redundant species would result in significant losses of ecosystem functionality.
3	Understanding Ecosystem Services through Organizational Analysis: Application to the Truckee-Carson River System Tashev, Azamat 13 July 2018 (has links) No description available. Climate Change Conservation Ecology Environmental Management Environmental Studies Geography Hydrology Land Use Planning Natural Resource Management Organization Theory Political Science Public Policy Social Research Sustainability Systematic Systems Design Systems Science Water Resource Management ecosystem services production system beneficiary water use river system management organizational analysis water management functional roles and responsibilities socio-ecological systems SES Truckee-Carson River System complex systems Ostrom

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