H. V. Kaltenborn and his sponsors: Controversial broadcasting and the sponsor's role

Few advertisers of products intended for mass consumption care to sponsor controversial programs, for fear of alienating potential buyers. There are many exceptions to this rule, but the sponsorship of one of American broadcasting's most trenchant commentators may have required courage of a sort rarely seen in corporate form. The relations of H. V. Kaltenborn to the various sponsors who gave him a ticket to the marketplace is the subject of this paper, which is drawn from the 1965 dissertation of Professor David G. Clark, of the University of Wisconsin School of Journalism.     

Rethinking Affirmative Action: Redefining Compelling State Interest and Merit in Admission

The disruptive technologies of the Internet and computers are changing our world in myriad ways. These technologies are also increasingly being employed in higher education but to what effect? Are the effects on higher education quality measurable, and if so, what is the effect on the traditional gap between high-income and low- to middle-income nations on this score? This theme is pursued in this article, which uses a variety of methods to probe the question. Because great controversy attends the notion of institutional quality, measures differ, and the effect of these technologies on that quality depends to a great extent on the definition being used. Low- to middle-income countries' usage of the Internet and computer technologies lags behind that of high-income countries, but projections indicate they are catching up.     

EVALUATING AN INTERDISCIPLINARY TEAM TRAINING INSTITUTE IN GERIATRICS: IMPLICATIONS FOR TEACHING TEAMWORK THEORY AND PRACTICE

Changes occurring in both health care and higher education systems in the U.S. suggest the need for the development of innovative model programs for interdisciplinary team training. This article reports on the development and evaluation of one such program: an interdisciplinary team training institute in geriatrics and primary care sponsored by the Rhode Island Geriatric Education Center in 1999. Key principles underlying the design of program content are summarized. Evaluation data analyzed include information on attendees' backgrounds and teamwork experience, and an assessment of the most important and least important insights gained from participation. Specific ratings for each session include relevance and knowledge attainment. Major observations and recommendations include the combination of theory and practice, a focus on current and cutting edge issues, the importance of educational marketing research, and implications for program evaluation.     

The electrical breakdown of liquid dielectrics

Throughout this paper data have been presented showing that the apparent inconsistency of the reported dielectric strength behavior of insulating liquids can be satisfactorily correlated if proper consideration be given to the state of the “purity” of the liquid itself. As a result it is suggested that insulating liquids should be classified as (a) “pure,” indicating those liquids free from dissolved gases as primary “impurities”; and (b) “impure,” including those liquids which contain dissolved gas. The breakdown mechanism depends on the distinctive behavior of these two general classes. “Pure” liquid breakdown is a function of charged particle formation. In part, this may be caused by the assumption of a charge by molecular aggregates, colloidal-like in nature. In part, the charge may arise from molecular ionization by collision. The latter occurs chiefly in the voltage range immediately preceding electrical rupture and is the chief cause of “pure” liquid insulation failure. The presence of the first type of charge—that is, the existence of a difference of potential between molecular aggregates and the liquid—is chiefly responsible for the variation in the time factor to breakdown.The breakdown of “impure” liquids is a function of dissolved gas elimination. This dissolved gas is eliminated as a result of changing solubility produced (a) by electro-striction effects, or (b) by changing pressure or temperature. The presence of secondary impurities such as dust particles and fibers, acts chiefly through the effect on increasing gassing tendencies.It is suggested further that the localization of dielectric breakdown in liquids, irrespective of the type or degree of “purity,” is chiefly in the “neutral membrane” located near the electrodes and formed by the discharge of particles. Such a “neutral membrane” results in a space charge effect giving marked drop in potential and as a result promoting ionization by collision effects in “pure” liquids and electro-striction effects in “impure” liquids.