422 research outputs found
A New Method for Increasing COP of Heat Pump Cycle
Article信州大学工学部紀要 35: 11-18 (1973)departmental bulletin pape
Full bispectra from primordial scalar and tensor perturbations in the most general single-field inflation model
We compute the full bispectra, namely both auto- and cross- bispectra, of
primordial curvature and tensor perturbations in the most general single-field
inflation model whose scalar and gravitational equations of motion are of
second order. The formulae in the limits of k-inflation and potential-driven
inflation are also given. These expressions are useful for estimating the full
bispectra of temperature and polarization anisotropies of the cosmic microwave
background radiation.Comment: 20 pages, 5 figures, accepted to PTE
Effects of Pairing on the Relationships between Motivation and Task Performance in an Interactive Task
This study investigates how learners’ own motivational variables are related to task performance and how learners’ task performance is influenced by their partners’ motivational variables in an interactive task. A total of 28 Japanese first year university students engaged in a computer mediated, decision making task, and the number of words produced and turns taken during the task was counted as their task performance. Questionnaires were administered to measure eight motivational dispositions related to the task. Correlation analyses were used to examine the relationships between task motivation and performance. The results showed that (a) learners’ task motivation was positively correlated with task performance, suggesting a positive role of task motivation in performing a task and (b) learners’ task performance was negatively correlated with the interlocutors’ task motivation, except for the highly motivated pairs, which implied limited effects of pair work. This study finally provides some pedagogical and future implications
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