343 research outputs found

    Comparing the Nuclear and Information RMAs; Strategic Insights, v. 2 issue 4 (April 2003)

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    This article appeared in Strategic Insights, v.2 issue 4 (April 2003)Approved for public release; distribution is unlimited

    Prescribing the American Dream: Psychoanalysts, Mass Media, and the Construction of Social and Political Norms in the 1950\u27s

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    This paper surveys how and why psychoanalysis during the 1950s—its “Golden Age” in the United States—emerged as a highly respected professional discipline with great public currency. The prevalence and popularity of psychoanalysts in public culture is substantiated by an extensive survey of primary print sources featuring psychoanalysts opining on many of the major social and political issues of the decade. Combining these opinions with those expressed in professional journals and publications, this paper reveals how psychoanalysts used their growing public currency to shape debates about which social identities and behaviors, cultural values, and political ideals were appropriate and legitimate for Americans during the era. By determining the boundaries between normal and abnormal, and associating some identities, values, and behavior with mental illness, psychoanalysts helped construct and legitimize social and political norms in postwar society. The behaviors and ideals psychoanalysts publicly promoted included marriage, home-ownership, and a new nuclear family; separate gender spheres and clearly defined roles for men and women; heterosexuality; personal industriousness; anticommunism; and individualism. Finally, despite the preeminence of concerns about conformity among intellectuals during the 1950s, and the apparent promise of psychoanalysis to support better self- realization for individuals, the construction and normalization of this limited set of values actually promoted conformity and thwarted individuality

    The factors influencing the price of beef, an econometric study

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    The beef industry in the United States is changing on a daily basis. Retailers across the country are always striving to increase profits and cut costs. Through econometric study, this paper looks at viewing different factors that influence the final price and cost of beef to the retailer. With good results, a retailer can use this knowledge to achieve their ultimate goal: to make more money

    Determination of propylenethiourea and related compounds by HPLC

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    Propylenethiourea (4-methylimidazolidine-2-thione) is the major breakdown product of Propineb, a fungicide of the propylenebisditiocarbamate group. The degradation pattern of Propineb is analagous to those of ethylenebisdithiocarmabates which give ethylenethiourea as the principal metabolite. This compound has been reported to possess a carcinogenic activity. [Continues.

    Design for STEAM: Creating Participatory Art with Purpose

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    Innovation is simultaneously reflected in the variety and diversity of art. Over the past century, art forms have progressed along a continuum from static to dynamic, and then to interactive and participatory. The therapeutic value of creating and engaging in all of these art forms has also been identified. Furthermore, educators have recognized the profound value of art and design within the context of scientific and technical learning, and STEAM (science, technology, engineering, art, and math) has emerged as an educational philosophy with a strong base of support. This paper defines and articulates participatory elements of STEAM projects, and provides guidance for how to design art installations for learning that are fully participatory. To do this, we 1) present emerging social and organizational models that align with STEAM, and then 2) develop a design framework for creating new participatory art that meets the goals of STEAM learning

    Análise experimental em hélices: ensaio simplificado de tração estática

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    TCC (graduação) - Universidade Federal de Santa Catarina. Campus Joinville. Engenharia Naval.Um bom desempenho do sistema propulsivo assegura um ganho a embarcação, pois reduz o consumo de combustível. Embora os usos de técnicas computacionais tenham se desenvolvido nos últimos anos, qualquer novo modelo de hélice ainda requer a realização de testes para garantir um bom rendimento. Assim, é indispensável conhecer os parâmetros que descrevem um hélice, bem como o desempenho obtido, a fim de adequadamente selecionar o hélice, reduzindo o número de ensaios a serem realizados. Submeter o propulsor a testes demanda tempo e custo, circunstâncias indesejadas para o projeto do sistema propulsivo. Este trabalho se insere neste contexto e apresenta a elaboração do projeto de um hélice, percorrendo todas as etapas, desde a seleção dos parâmetros, a fabricação, para ao final realizar um teste de tração estática. O hélice foi fabricado com placas de aço conformadas sobre um molde de madeira, enquanto o ensaio foi realizado em um pequeno tanque, visando quantificar a força de empuxo do hélice assim como analisar sua eficiência. A metodologia proposta foi aplicada ao projeto de um hélice para o barco solar da equipe Babitonga, buscando atingir um resultado superior ao hélice adotado atualmente pela equipe. Os resultados mostraram, que, provavelmente por problemas de fabricação, o hélice projetado e construído apresentou uma capacidade de tração estática inferior aos outros dois hélices ensaiados.A good performance of the propulsive system ensures a gain to the boat, as it reduces the fuel consumption. Although the uses of computational techniques have developed in recent years, any new propeller model still requires testing to ensure its efficiency and effectiveness. Thus, it is indispensable to know the parameters that describe a propeller, as well as the performance obtained, in order to properly select the propeller, reducing the number of tests to be performed. Submitting the propellant to tests demands time and cost, unwanted circumstances for propulsive system design. This work is inserted in this context and presents the design of a propeller, going through all stages, from the selection of parameters, to the fabrication, in order to carry out a bollard pull test. The propeller was fabricated with shaped steel plates on a wooden mold, while the test was carried out in a small tank, in order to quantify the thrust force of the propeller as well as to analyze its efficiency. The proposed methodology was applied to the design of a propeller for the solar boat of the Babitonga team, seeking to achieve a result superior to the propeller currently adopted by the team. The results showed that, probably due to manufacturing problems, the designed and constructed propeller presented a lower static tensile capacity than the other two propellers tested

    Determinação experimental da permeabilidade de compósito sanduíche produzido por infusão a vácuo

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    TCC (graduação) - Universidade Federal de Santa Catarina. Campus Joinville. Engenharia Naval.O processo de infusão a vácuo é caracterizado pela boa qualidade na geração de grandes peças em compósito de plástico reforçado com fibras, sendo largamente utilizado na indústria náutica e de energia eólica. Entretanto, o processo de infusão de grandes peças não é simples, exigindo estudos para o preciso posicionamento de suas linhas de vácuo e de escoamento da matriz plástica. Atualmente programas de simulação de fluxo auxiliam o projetista a determinar e dimensionar os locais destas na peça. Não obstante, independente da ferramenta utilizada para modelação do processo, é necessário o conhecimento da permeabilidade do material compósito. Compreendendo a importância quanto a sua obtenção, esse estudo tem como objetivo determinar de maneira experimental a permeabilidade de um compósito de plástico reforçado com fibra de vidro (PRFV) com núcleo de polietileno tereftalato (PET). O método utilizado para determinação da permeabilidade foi o do fluxo unidirecional. A viscosidade e o tempo de gel da resina foram caracterizados, assim como o laminado final através das frações mássicas e volumétricas dos materiais de composição. A partir de demarcações da frente de fluxo a cada um minuto de infusão foram calculadas as suas distâncias longitudinais. Nas linhas demarcadas verificou-se a presença do fenômeno race tracking; para diminuição de sua influência foram propostas novas linhas de frente de fluxo verticais. Após todas as propriedades determinadas antes, durante e após o processo, foi utilizada a lei de Darcy para o cálculo da permeabilidade. Os resultados se apresentaram dentro da grandeza esperada, com média de 673,48 darcy, e desvio padrão de 136,35 darcy, indicando ser um bom método para obtenção da permeabilidade longitudinal de compósitos com núcleo.The vacuum infusion process is characterized by good quality in the generation of large pieces of fiber-reinforced plastic composite, which are used in the nautical and wind energy industry. However, the process of infusing large parts is not simple, requiring studies for the precise positioning of its vacuum lines and flow of the plastic matrix. Currently, flow simulation programs assist the designer in determining and dimensioning their locations on the part. However, regardless of the tool used for modeling the process, it is necessary to know the permeability of the composite material. Understanding the importance of obtaining it, this study aims to determine in an experimental way the permeability of a glass-fiber reinforced plastic (GFRP) composite with polyethylene terephthalate (PET) core. The method used to determine the permeability was the channel flow method. The viscosity and gel time of the resin were characterized, as well as the final laminate through the mass and volumetric fractions of the composition materials. Infusion measurements were made every minute form the demarcations of the flow front, their longitudinal distances were calculated. In the demarcated lines, was verified the presence of the race tracking phenomenon; in order to reduce its influence, new vertical flow front lines were proposed. After all the properties determined before, during and after the process, Darcy's law was used to calculate the permeability. The results were within the expected magnitude, with average of 673.48 darcy, and a standard deviation of 136.35 darcy, indicating that it is a good method for obtaining the longitudinal permeability of composites with a core
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