Thick Target Models of Impulsive Chromospheric Flares

The most impulsive flares show large amplitude intensity variations in times of order 10 s. An attempt is made to reproduce the properties of these events with a model in which the heating of a static chromosphere by a nonthermal electron beam is balanced by thermal radiation cooling. The computed results suggest that the assumed static equilibrium may be achieved in some parts of the flares, and indicate improvements necessary for more accurate models of this type of flare

A study of the influence of the socieconomic background of the nursing student on attitude toward selected nursing activities

Thesis (M.S.)--Boston UniversityThis study was undertaken to determine the influence of socio-economic background of nursing students upon attitude toward selected nursing activities. The review of literature suggested that there may be a relationship between socio-economic background and student attitudes. The sample chosen for study was composed of fifteen junior students in a medical-surgical nursing class of a basic collegiate school of nursing. A tool was developed to elicit attitudes about twenty-seven commonly performed nursing activities. Socio-economic background factors were obtained by collecting data pertinent to occupational classification of the father, age of the student, number of siblings, previous work experience in a hospital, participation in household tasks, and number and kind of employed household help. This information was analyzed in relation to the students' expressed attitudes toward the selected nursing activities [TRUNCATED

Will Economic Globalization Result in Cultural Product Homogenization, in Theory and Practice?

Globalization is resulting in complex decisions by businesses as to where and what to produce, while free trade is resulting in a greater menu of choices for consumers, often with the blending of products and goods from various cultures, called ‘glocalization.’ This paper reviews the theories and practices behind these current happenings, which are each economic, politicaleconomic, institutional, and sociological, first by looking at the supply side of why certain countries produce the goods that they do, and then at the demand side, why consumers have particular, cultural tastes and preferences for goods. It also proffers theories to explain firm location and that of intra-industry trade. This occus when countries trade similar products rather than differentiating, as economic theory would suggest. After reviewing the literature, through numerous examples of political-economy and culture, it argues somewhat normatively that differences in culture and goods are a strength to the world community, and that globalization in the end will not likely result in a singular global culture with a uniformity of exactly identical economic goods anytime in the near futur

What public schools may learn from centers of adult education

Thesis (M.A.)--Boston University, 1948. This item was digitized by the Internet Archive

Low gravity containerless processing of immiscible gold rhodium alloys

Under normal one-g conditions immiscible alloys segregate extensively during solidification due to sedementation of the more dense of the immiscible liquid phases. However, under low-g conditions it should be possible to form a dispersion of the two immiscible liquids and maintain this dispersed structure during solidification. Immiscible (hypermonotectic) gold-rhodium alloys were processed in the Marshall Space Flight Center 105 meter drop tube in order to investigate the influence of low gravity, containerless solidification on their microstructure. Hypermonotectic alloys composed of 65 atomic % rhodium exhibited a tendency for the gold rich liquid to wet the outer surface of the containerless processed samples. This tendency led to extensive segregation in several cases. However, well dispersed microstructures consisting of 2 to 3 micron diameter rhodium-rich spheres in a gold-rich matrix were produced in 23.4 atomic % rhodium alloys. This is one of the best dispersions obtained in research on immiscible alloy-systems to data

A Discrete Model of Replenishable Resource Management Under Uncertainty

This paper examines issues in the management of replenishable resources under uncertainty. The stochastic resource dynamics are given by the discrete-time counterpart of the classic logistic growth model. The use of discrete-time stochastic dynamics allows for a more general characterization of growth uncertainty than is possible with continuous-time models. Given a general specification of the resource management problem, necessary and sufficient conditions for the optimal management policy are derived. Many important properties of the management policy are derived and comparisons are made with the deterministic counterpart policy. An example serves to illustrate many of the results of the analysis.Environmental Economics and Policy, International Development, Resource /Energy Economics and Policy, Risk and Uncertainty,

Policy making in an integrated world: from surveillance to ...?

Monetary policy ; International Monetary Fund ; International finance