Media Discourse and the Feminization of Poverty

Source diversity models suggest that by using non-conventional, non-official sources for news content, the prevailing perceptions about poor people and their needs would be undermined in news coverage. This study found that major newspapers are making efforts to diversify the sources quoted in their coverage of poverty issues. However, the portrayals of poor people have not changed, particularly for women and people of color. Results of this study suggest that source diversity research must go further to explore how sources are used to address the problems of the poor and how media influence public perceptions of public policy related to welfare and welfare reform

Summary of Saturn swingby missions to Uranus

The interplanetary trajectory characteristics for missions to Uranus, which employ an intermediate swingby of Saturn to reduce the total trip time are summarized. Opportunities for such swingby missions will occur from 1979 through 1987 and not again until 2025. The general trajectory characteristics (C sub 3; departure, swingby, and arrival dates; swingby radius; and arrival speed) are evaluated, and payload and launch window information for a Titan 3E/Centaur/TE-364-4 class launch vehicle is provided

Suited for spacewalking: A teacher's guide with activities

This publication is an activity guide for teachers on spacesuits and spacewalking. It uses the intensive interest many children have in space exploration as a launching point for hands-on-opportunities. The guide begins with brief discussions of the space environment, the history of space walking, the Space Shuttle spacesuit, and working in space. These are followed by a series of activities that enable children to explore the space environment as well as the science and technology behind the functions of spacesuits. The activities are not rated for specific grade levels because they can be adapted for students of many ages. The guide concludes with a brief glossary as well as references and resources

Thermal shock and erosion resistant tantalum carbide ceramic material

Ceramic tantalum carbide artifacts with high thermal shock and mechanical erosion resistance are provided by incorporating tungsten-rhenium and carbon particles in a tantalum carbide matrix. The mix is sintered by hot pressing to form the ceramic article which has a high fracture strength relative to its elastic modulus and thus has an improved thermal shock and mechanical erosion resistance. The tantalum carbide is preferable less than minus 100 mesh, the carbon particles are preferable less than minus 100 mesh, and the tungsten-rhenium particles are preferable elongate, having a length to thickness ratio of at least 2/1. Tungsten-rhenium wire pieces are suitable as well as graphite particles

Steady-state, effective-temperature dynamics in a glassy material

We present an STZ-based analysis of numerical simulations by Haxton and Liu (HL). The extensive HL data sharply test the basic assumptions of the STZ theory, especially the central role played by the effective disorder temperature as a dynamical state variable. We find that the theory survives these tests, and that the HL data provide important and interesting constraints on some of its specific ingredients. Our most surprising conclusion is that, when driven at various constant shear rates in the low-temperature glassy state, the HL system exhibits a classic glass transition, including super-Arrhenius behavior, as a function of the effective temperature.Comment: 9 pages, 6 figure

Development of high temperature materials for solid propellant rocket nozzle applications

Aspects of the development and characteristics of thermal shock resistant hafnia ceramic material for use in solid propellant rocket nozzles are presented. The investigation of thermal shock resistance factors for hafnia based composites, and the preparation and analysis of a model of elastic materials containing more than one crack are reported

Development of high temperature materials for solid propellant rocket nozzle applications Quarterly progress report, 1 Jul. - 30 Sep. 1969

Refractory metal and graphite composite research for solid propellant rocket nozzle application

Triangulation: effective verification of food safety and quality management systems and associated organisational culture

Purpose The aim of this article is to critique the existing and emerging alternative approaches being used by regulators and industry to verify the presence and efficacy of food safety management systems (FSMS). It is the second article in a theme issue of Worldwide Hospitality and Tourism Themes, discussing the importance of measuring food safety and quality culture. Design/methodology/approach The research, primarily focused on UK examples, examines academic and grey literature to consider the options for effective verification FSMS with emphasis on the hospitality sector including the use of triangulation. Findings Third party certification (TPC) compliance audits alone will not deliver effective verification of the FSMS and the cultural context of how formal systems are implemented, monitored and internally verified. Triangulation needs to be undertaken during the FSMS verification process which at its simplest is a Question, Observe, Measure (QOM) triad and at its more complex involves TPC compliance audits and performance assessment using data analysis methodology and product and environmental testing

The influence of organizational subcultures on food safety management

This study considers the influence of food subcultures within the food manufacturing environment and the adoption of food safety management practices. The influence of diversity within the overarching food safety culture of a food manufacturing operation is discussed through the use of case studies. Following a review of the literature, four subcultures were proposed (i.e., executive, operations, engineering, and technical / quality) each with its own unique identity and modus operandi. Understanding the interaction of these subcultures within the visible and invisible elements of food safety culture is critical to prevent a food safety incident and associated recall