The development of test beds to support the definition and evolution of the Space Station Freedom power system

Since the beginning of the Space Station Freedom Program (SSFP), the Lewis Research Center (LeRC) and the Rocketdyne Division of Rockwell International have had extensive efforts underway to develop test beds to support the definition of the detailed electrical power system design. Because of the extensive redirections that have taken place in the Space Station Freedom Program in the past several years, the test bed effort was forced to accommodate a large number of changes. A short history of these program changes and their impact on the LeRC test beds is presented to understand how the current test bed configuration has evolved. The current test objectives and the development approach for the current DC Test Bed are discussed. A description of the test bed configuration, along with its power and controller hardware and its software components, is presented. Next, the uses of the test bed during the mature design and verification phase of SSFP are examined. Finally, the uses of the test bed in operation and evolution of the SSF are addressed

Massive 4D, N = 1 Superspin 1 & 3/2 Multiplets and Dualities

Lagrangians for several new off-shell 4D, N = 1 supersymmetric descriptions of massive superspin-1 and superspin-3/2 multiplets are described. Taken together with the models previously constructed, there are now four off-shell formulations for the massive gravitino multiplet (superspin-1) and six off-shell formulations for the massive graviton multiplet (superspin-3/2). Duality transformations are derived which relate some of these dynamical systems.Comment: 15 pages, no figures, Latex twice, Grammar and typos corrected in second versio

Revised Distribution Records of Some Minnesota Fishes, With Addition of Two Species to the Faunal List

Recent collections of fishes in Minnesota hove resulted in the addition of two species, Moxostoma carinatum (Catostomidae) and Ammocrypta asprella (Percidae), to the state\u27s inland faunal list. Additional information on the distribution of 11 other species (Minytrema melanops, Hybopsis x-punctata, Opsopoeodus emiliae, Dionda nubiloa, Notropis amnis, Notropis texanus, Notropis umbratilis, Pimephales vigilax, Lepomis humilis, Etheostoma asprigene, ond Etheostoma microperca) is presented . Collections in large rivers are responsible for several new distribution records, and further sampling in such habitats should lead to further discoveries

Interfacial interaction of water and silicate minerals

This program has relation to the categories of the nature of water and water cycle. In particular, the study deals with the basic interactions of water with the surface of minerals. The program has direct application to the areas groundwater and water in soils in the category of water cycle. We have investigated the problems of bonding and migration of water molecules upon sheet structures of mineral samples. The minerals used in the program have surface structures that are similar and in some cases identical to those found in clays. This study focused upon the molecular level rather than on the bulk property level of capillarity and hydraulics. The interlayer binding energy of selenite was measured. The measurements were made within a test chamber in which the temperature and atmospheric pressure of the sample could be controlled and monitored. There was found to be no significant difference in the IBE of selenite in air (716 ergs/cm^2) and in vacuum (704 ergs/cm^2). There was found to be a slight difference in the low temperature IBE (768 ergs/cm^2) and the high temperature IBE (720 ergs/cm^2); however, this was attributable to effects of cold on the mechanism. It was concluded that the IBE io independent of atmospheric and temperature effects within the range of temperature and pressure studied.Project # A-057-MO Agreement # 14-31-0001-382

Broadcast Profanity and the Right to Be Let Alone: Can the FCC Regulate Non-Indecent Fleeting Expletives under a Privacy Model

This manuscript examines the issue of broadcast profanity regulation in light of the Supreme Court\u27s March 2008 decision to grant certiorari in an appeal from the U.S. Court of Appeals for the Second Circuit. The Second Circuit in 2007 held that the FCC was arbitrary and capricious in its decision to begin prohibiting single profanities, or fleeting expletives, on broadcast television. However, the common law of nuisance and the law of privacy may provide justification for the FCC to regulate broadcast profanity under 18 U.S.C. § 1464. Although some argue that regulating broadcast profanity would induce a chilling effect on broadcast speech or would be futile in light of proliferation of profanity across society, relevant Supreme Court precedents seem to allow prohibition of profanity when it attempts to enter the home. A review is undertaken of the status of profanity in the law by examining the history of nuisance actions for profanity as well as contemporary zones of activity, including schools, the workplace and courtrooms, in which the law allows prohibitions on profanity

Lessons from community-based distribution of family planning in Africa

This paper reviews findings and experiences from efforts to implement community-based family planning services in sub-Saharan Africa. Although research suggests that community-based service delivery can contribute to contraceptive use, the magnitude of impact is often in doubt or is considerably less than was observed in similar projects in Asia in the 1970s and 1980s. Reasons for the constrained impact of community-based family planning in Africa are reviewed and assumptions about the efficacy and mechanism of community-based distribution (CBD) are discussed. Whereas several contrasting approaches to CBD have been tried, little is known about the relative merits of alternative CBD approaches