Suchergebnisse

The design and construction of a high level noise blanker and RF amplifier system as used in RFI measurement work is presented. This RFI work is part of the Shipboard RFI in UHF SATCOM project sponsored by Naval Electronic Systems Command. The system requirements are discussed providing a basis for deriving the system specifications. The design of the solid state blanker is presented in detail, along with tests performed on the completed system. Electromagnetic compatibility of the unit with the working environment is considered in the design and in the special construction techniques employed ; Prepared for: Naval Electronic Systems Command, PME 106, Washington, D.C. 20302. ; http://archive.org/details/highlevelnoisebl76106mace ; A task under the Shipboard RFI in UHF SATCOM Project. ; NA

Research on academic achievement has led the way in demonstrating how culturally constructed meanings shape adolescent scholastic behavior. The aim of this research is to move this standpoint of analysis more centrally into the area of adolescent dating and sexuality by focusing on the cultural components of adolescent romantic relationships. This study examines cultural models of romantic relationships in Vernacular Term Interviews of 68 African American and 59 Mexican American 11th‐ and 12th‐grade female and male high school students. A subset of interviews was analyzed first qualitatively to identify the models. The models then were committed to a manual and 4 analytic coders established reliability before coding all interviews blind as to race/ethnicity and gender of the adolescent. The resultant data were summarized by a principal components analysis that yielded 5 interpretable factors. Factor scores were computed and compared for gender and race/ethnicity differences. The results demonstrated clear differences in factors by race/ethnicity but not by gender. Results are discussed in relation to cultural differences described in the literature for these 2 populations.

We develop and apply a judgment‐based approach to selectingrobustalternatives, which are defined here asreasonably likely to achieve objectives, over a range of uncertainties. The intent is to develop an approach that is more practical in terms of data and analysis requirements than current approaches, informed by the literature and experience with probability elicitation and judgmental forecasting. The context involves decisions about managing forest lands that have been severely affected by mountain pine beetles in British Columbia, a pest infestation that is climate‐exacerbated. A forest management decision was developed as the basis for the context, objectives, and alternatives for land management actions, to frame and condition the judgments. A wide range of climate forecasts, taken to represent the 10–90% levels on cumulative distributions for future climate, were developed to condition judgments. An elicitation instrument was developed, tested, and revised to serve as the basis for eliciting probabilistic three‐point distributions regarding the performance of selected alternatives, over a set of relevant objectives, in the short and long term. The elicitations were conducted in a workshop comprising 14 regional forest management specialists. We employed the concept ofstochastic dominanceto help identify robust alternatives. We used extensive sensitivity analysis to explore the patterns in the judgments, and also considered the preferred alternatives for each individual expert. The results show that two alternatives that are more flexible than the current policies are judged more likely to perform better than the current alternatives on average in terms of stochastic dominance. The results suggest judgmental approaches to robust decision making deserve greater attention and testing.

Sammelband mit Untersuchungen zur Rüstungsindustrie der Länder der Dritten Welt und zum Waffenhandel zwischen Industrie- und Entwicklungsländern. Bedeutung für die ökonomische und politische Unabhängigkeit dieser Länder