A Calibration study of a still video system and photomatic color separation program

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For many citizens attractiveness is linked to political expertise

Why do voters recognize some commentators as political experts and others not? In new research using election survey data and survey experiments, Carl Palmer and Rolfe Peterson find that people evaluate those that are more attractive as being more competent and intelligent. More attractive individuals are also seen as more politically knowledgeable, with people preferring to seek them out to learn more about politics

PRINCIPALS’ LEADERSHIP PRACTICES AND MATHEMATICS PASS RATE IN JAMAICAN HIGH SCHOOLS

This research was intended to explore the degree to which leadership practices impacted Jamaican schools’ mathematics achievement. More specifically, the researchers examined Jamaica’s high school students’ CSEC mathematics performance in relation to principals’ instructional leadership behaviors as measured by teachers’ perceptions, using Kouzes and Posner (2003) Leadership Practices Inventory (LPI). Data were gathered from 2-4 teachers from 42 high schools in Jamaica. The results indicated that those principals who had high LPI scores also lead schools with higher mathematics pass rates than those principals who had low LPI scores. More specifically, “enabling others to act” was established as the leadership practice most associated with high mathematics performance. Finally, we discovered that the traditional Jamaican high schools were more likely to experience satisfactory mathematics pass rates

Conceptual design for a full-scale VAC*TRAX vacuum thermal desorption unit. Final report, September 1992--December 1995

Rust Federal Services is pleased to present this topical report on the results of our Phase II conceptual design work of the PRDA VAC*TRAX{sup SM} mobile vacuum thermal desorption technology demonstration program. Through the present Phase II conceptual design activities, Rust has developed an equipment design and permitting strategy that retains the flexibility of a mobile treatment system with the long term value and ease of access of a central facility. The process is designed to remove volatile matter from solid matrices by thermal desorption. The system is also designed with superior emission controls, making it an ideal system for the treatment of radioactive wastes

Navigating non-sense by exemplifying situated life experience and intergenerational heritage knowledge in Education for Sustainable Development learning spaces

The method which people use in acquiring knowledge is functionally interdependent with, and thus inseparable from, the substance of the knowledge they possess, and especially from their basic image of the world. If this image is different, the method they devise for acquiring knowledge is, as a matter of course, different too. (Elias, 1978:64)This paper uses an activity system perspective to probe the related problems of knowledge abstraction and a lack of relevance as a modern legacy of colonial education practices in Africa. Its purpose is to contemplate Education for Sustainable Development (ESD) pedagogy to support learning that might be better situated in and resonate with local African contexts and the emerging sustainability concerns in everyday life. Colonial education trajectories and the recent inclusion of new environmental knowledge in African curriculum and civic learning contexts are examined. This points to how circulating environment and sustainability knowledge is being constituted in disciplinary fields as abstract concepts that are often difficult to relate to local sustainability concerns. Socio-cultural heritage and intergenerational meaning making are explored to uncover better situated ways of navigating much of the abstract ‘non-sense’ confronting African learners in many modern education contexts today. Illustrative examples of historical patterns of exclusion are scoped and two cases of pedagogical innovation are examined to contemplate how to navigate better situated and more relevant learning processes. Enacted in situated and co-engaged ways, ESD practices may enable the socio-cultural capital and environmental realities of local social-ecological contexts to articulate with better situated sustainability propositions for transitioning to more peaceful, just and sustainable futures

All-Metallic Phase Change Thermal Management Systems for Transient Spacecraft Loads

In this work, we explore the thermal properties of gallium as an effective phase change material for thermal management applications. Thermal storage and dissipation of gallium manufactured heat sinks were compared to conventional phase change heat sinks. The comparison revealed a 50-fold (80 K versus 1.5 K) potential reduction in temperature during the phase change process due to the high density, thermal conductivity, and latent heat of fusion. The gallium creates shallow thermal gradients when transiently heated, producing a nearly isothermal process. Computational estimates using lumped sum parameters were able to provide simple modeling to predict the results. Gallium based phase change devices offer a combination of low volume, small temperature drops across the device, simplicity of manufacture and design, and high energy storage applications