21,563 research outputs found
Librarian and Faculty Collaborative Instruction: A Phenomenological Self-Study
Several models of librarian and faculty collaboration are found in the professional librarian literature. The literature on collaborative self-study research in higher education settings indicates collaborative self-study research can improve interdisciplinary and collaborative approaches to teaching and research and facilitate the transfer of knowledge. A research librarian and assistant professor of special education conducted a phenomenological self-study to examine their multiple roles as researchers, collaborators, and educators who collaborated to develop, implement, and evaluate distance-delivered instructional services for public school teachers who live and work in remote, rural, and Native communities throughout the state of Alaska. Several themes emerged from this study, including: (a) the authors’ interdisciplinary and collaborative efforts resulted in increased opportunities to team teach and conduct future collaborative research; (b) the authors struggled to communicate effectively with students via audio-conference; and (c) the beliefs and practices of both authors were transformed by their participation in this self-study. The study suggests implications for further and improved interdisciplinary collaboration between librarians and faculty. The authors believe this collaborative approach to self-study research facilitates reflective and authentic teaching and research for academic librarians working in collaboration with teaching faculty.Ye
Leaf Optical Responses to Light and Soil Nutrient Availability in Temperature Deciduous Trees
Leaf optical parameters influence light availability at the cellular, leaf, and canopy scale of integration. While recent studies have focused on leaf optical responses to acute plant stress, the effects of changes in plant resources on leaf optics remain poorly characterized. We examined leaf optical and anatomical responses of five temperate deciduous tree species to moderate changes in nutrient and light availability. Spectral reflectance in the visible waveband generally increased at high light, but decreased with increased nutrient availability. Patterns of both spectral reflectance and absorptance were primarily determined by chlorophyll concentration although carotenoid concentration was also influential. While most anatomical features did not explain residual variation in reflectance, cuticle thickness was significantly related to reflectance at complementary angles compared to the angle of incidence. Absorptance did not change with light environment; however, absorption efficiency per unit biomass increased by approximately 40% under low light, due to reduced leaf mass per area. We conclude that changes in resource availability differentially influence leaf optical properties and that such changes are driven primarily by changes in pigment concentrations. The magnitude of leaf optical responses to moderate changes in resource availability was comparable to those of acute stress responses and varied among species
By a Thread: The New Experience of America's Middle Class
Developed in collaboration with the Institute on Assets and Social Policy at Brandeis University, By a Thread: The New Experience of America's Middle Class looks at the financial security of the middle class using the innovative Middle Class Security Index, rating household stability across five core economic factors: assets, educational achievement, housing costs, budget and healthcare. The Index provides a comprehensive portrait of how well middle-class families are faring in each of these areas, with spotlight on the strengths and vulnerabilities of today's middle class
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