892 research outputs found

    The issue context of modern American politics: semiparametric identification of latent factors from Discrete data

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    A new methodology that estimates attitudes semiparametrically and estimates actions nonparametrically, as a function of the resulting attitudinal measures, is used to examine the behavioral effects of ѣultural' and ѥconomic' preferences in the Presidential elections of 1984 and 1992. The results suggest a shift toward ѣultural politicsҬ achieved Ųst among the highly educated but spreading throughout society by the later election. One consequence is that both parties are now consistent in their policy alignments״he Democrats being liberal on both scales, the Republicans conservative. Despite this aggregate consistency, different social groups are attached to the parties in diĥrent ways, thereby heightening the potential for intraparty conǩct while sharpening the problem of fashioning a platform that is broadly attractive. These problems, finally, express themselves very diĥrently within the Democratic and the Republican parties.

    Designing IS service strategy: an information acceleration approach

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    Information technology-based innovation involves considerable risk that requires insight and foresight. Yet, our understanding of how managers develop the insight to support new breakthrough applications is limited and remains obscured by high levels of technical and market uncertainty. This paper applies a new experimental method based on “discrete choice analysis” and “information acceleration” to directly examine how decisions are made in a way that is behaviourally sound. The method is highly applicable to information systems researchers because it provides relative importance measures on a common scale, greater control over alternate explanations and stronger evidence of causality. The practical implications are that information acceleration reduces the levels of uncertainty and generates a more accurate rationale for IS service strategy decisions

    Analysis of data -based decision-making: The perceptions and roles of teachers and administrators

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    Educators are required by federal and state mandates to use data in order to improve student achievement and teacher performance in public schools. The public\u27s faith in public schools is dependent upon the school organization\u27s ability to respond to the data and to make changes that will improve schools. The perceptions of members of the school organization regarding barriers and facilitative strategies that either hinder or promote the effective use of data, respectively, inherently impact the effective use of data. The purpose of this study was to examine the perceptions of school staff members regarding the use of data to make educational decisions.;Although the use of data to make informed decisions to improve an organization\u27s capacity to reach defined goals holds promise, the process of implementing an organizational structure and developing a culture and climate that facilitate the use of data within the public schools presents challenges. This study showed that although the respondents generally agreed that the school and/or district had the cultural components to facilitate greater student achievement, barriers existed that limit the most effective use of data within the organization

    The Influence of Protein Concentration and Homogenization on Moisture Content, Curd Yield, and Fat Retention of Model Cheese Made from Microfiltered Skim Milk Recombined with Cream

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    This project was funded by the Western Dairy Center at Utah State University as part of a multi-pronged approach to improve the current understanding of using concentrated milks in cheese making. Concentrated milk for this study was provided by South Dakota State University. This study compared the effect of different concentration factors of milk on curd moisture levels, fat content, and cheese curd yields. To see if these results could be improved (i.e. remove more moisture and retain more fat) milk samples were also subjected to limited pressure homogenization (microfluidization) treatments. It was found in the course of this study that limited homogenization treatment of concentrated milks before cheese making did indeed cause curds to retain more fat and less moisture. Also, the amount of cheese curds made was increased due to increased fat retention, thus providing another potential benefit to implementing this practice in the cheese industry. Our method of cheese making required very little additional equipment beyond what is normally available in dairy laboratories. Additionally, it was performed by a single person, which further simplifies using this method in future research projects

    Tapeworm Enigma

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    The issue context of modern American politics: Semiparametric identification of latent factors from discrete data

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    A new methodology that estimates attitudes semiparametrically and estimates actions nonparametrically, as a function of the resulting attitudinal measures, is used to examine the behavioral effects of ѣultural' and ѥconomic' preferences in the Presidential elections of 1984 and 1992. The results suggest a shift toward ѣultural politicsҬ achieved Ųst among the highly educated but spreading throughout society by the later election. One consequence is that both parties are now consistent in their policy alignments״he Democrats being liberal on both scales, the Republicans conservative. Despite this aggregate consistency, different social groups are attached to the parties in diĥrent ways, thereby heightening the potential for intraparty conǩct while sharpening the problem of fashioning a platform that is broadly attractive. These problems, finally, express themselves very diĥrently within the Democratic and the Republican parties

    The Mediating Influence of Role Stress on the Relationship between Adult Attention Deficit and Self-Efficacy

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    Adult Attention Deficit Disorder (AAD) and stress are pervasive and significant experiences with harmful consequences for both employees and organizations as a whole. This research study proposes a network of significant relationships between AAD, role stress, and self-efficacy. Adults who are experiencing the core symptoms of AAD (difficulties with task activation, concentration, effort, emotional interference, and accessing memory) are less likely to manage their role effectively and develop selfefficacy. The correlations between AAD and both role stress (r = 0.49, p \u3c 0.01) and self-efficacy (r = -0.32, p \u3c 0.01) were statistically significant, as was the correlation between role stress and self-efficacy (r = -0.44, p \u3c 0.01). The Sobel test (Z = 6.57, p \u3c 0.00) provides support for the hypothesis that role stress mediates the relationship between AAD and self-efficacy. A significant partial correlation between AAD and self-efficacy (r = -0.15, p = 0.02) remains after inclusion of the mediator (role stress), which limits the finding to partial mediation. Future research needs to draw samples from a variety of work situations

    POTENTIATION OF THE T-LYMPHOCYTE RESPONSE TO MITOGENS : I. THE RESPONDING CELL

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    Human and mouse lymphoid cells, stimulated by phytohemagglutinin (PHA) or lipopolysaccharide W (LPS), release supernatant factor(s) which are mitogenic for mouse thymocytes and which potentiate their responses to PHA or concanavalin A (Con A), The term LAF (lymphocyte-activating factor) is proposed for this activity. LAF not only enhances the mitotic responses of the less dense thymus subpopulations (A, B, and C) separable on discontinuous bovine serum albumin (BSA) gradients but also gives substantial responses in the otherwise inert cells of the denser fractions D and P. LAF does not exert a potentiating stimulatory effect on the responses of unfractionated mouse spleen cells, but does act synergistically with PHA on nonadherent spleen cells and on spleen cells of mice of several strains 5 days after irradiation and injection of thymocytes. Similarly LAF, which has no visible effect on unfractionated human peripheral blood cells, strongly potentiates the PHA response of column-purified lymphocytes, when these are cultured at low concentration. We conclude that LAF stimulates both central and peripheral T lymphocytes and enhances their responses to other stimulants

    The Intersection of Total and Wildland Fire-Attributed PM2.5 Exposure Disparities in the United States

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    Wildland fire smoke exposure is an emerging public health threat, in part due to climate change. Previous research demonstrated disparities in fine particulate matter (PM2.5) exposure, with Black people, among others, exposed to higher concentrations. We investigate the additional PM2.5 burden contributed by wildland fire smoke in the contiguous United States by race, ethnicity, urbanicity, per-capita income, and language spoken at home, using modeled total, non-fire, and fire PM2.5 from 2007 to 2018. Wildland fires contributed 7% to 14% of total PM2.5 annually, while non-fire PM2.5 declined 24%. Wildland fires cause greater PM2.5 exposure for Black and Native American people, and those who live in non-urban and low-income areas. Disparities in 2007 to 2018 average non-fire PM2.5 concentrations where Black people live (9.1 μg/m3) were further exacerbated by the contributions of fires (1.0 μg/m3). These results support efforts by public health agencies and air quality managers to reduce smoke exposure.Master of Scienc
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