7,643 research outputs found

    High resistance and raised modulus carbon fibers

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    The manufacturing process, test procedures and application of high strength, high modulus carbon fibers are described in this patent document

    Incorporating Side Information in Probabilistic Matrix Factorization with Gaussian Processes

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    Probabilistic matrix factorization (PMF) is a powerful method for modeling data associated with pairwise relationships, finding use in collaborative filtering, computational biology, and document analysis, among other areas. In many domains, there is additional information that can assist in prediction. For example, when modeling movie ratings, we might know when the rating occurred, where the user lives, or what actors appear in the movie. It is difficult, however, to incorporate this side information into the PMF model. We propose a framework for incorporating side information by coupling together multiple PMF problems via Gaussian process priors. We replace scalar latent features with functions that vary over the space of side information. The GP priors on these functions require them to vary smoothly and share information. We successfully use this new method to predict the scores of professional basketball games, where side information about the venue and date of the game are relevant for the outcome.Comment: 18 pages, 4 figures, Submitted to UAI 201

    Cyclical movements of the labor input and its implicit real wage

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    An examination of whether a different specification for labor input and real wages leads to a reconsideration of labor force volatility during business cycles.Wages

    The computational experiment: an econometric tool

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    A specification of the steps in designing a computational experiment to address a well-posed quantitative question, emphasizing that the computational experiment is an econometric tool used in the task of deriving the quantitative implications of theory.Econometrics ; Econometric models

    Business cycles: real facts and a monetary myth

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    This paper argues that the reporting of facts in light of theory fosters the development of theory. Dynamic neoclassical macro theory guided the selection of facts to report. The hope is that these facts will foster the further development of this theory. A finding is that the price level is countercyclical in the post-Korean War period. This finding debunks the myths that the price level is procyclical, with the postwar period being no exception.Business cycles

    Exploring the Cognitive Nature of Boards of Directors and Its Implication for Board Effectiveness

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    In this paper we propose a theoretical framework that emphasizes the development of a shared mental model (SMM) of a board of directors and its impact on board effectiveness and suggest that the accuracy and scope of the SMM in a board will moderate the relationship between a board’s SMM and board effectiveness. Also, we examine the impact of task and relationship conflict on the development of a SMM. Finally, we examine three board attributes (board size, CEO duality, and the proportion of outside directors on a board) as antecedents to the development of conflict among board members.Boards of directors, corporate governance, shared mental models

    Pharmacy Student's perceptions of Natural Science and Mathematics Subjects

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    Objective. To determine the level of importance pharmacy students placed on science and mathematics subjects for pursuing a career in pharmacy. Method. Two hundred fifty-four students completed a survey instrument developed to investigate students’ perceptions of the relevance of science and mathematics subjects to a career in pharmacy. Pharmacy students in all 4 years of a master of pharmacy (MPharm) degree program were invited to complete the survey instrument. Results. Students viewed chemistry-based and biology-based subjects as relevant to a pharmacy career, whereas mathematics subjects such as physics, logarithms, statistics, and algebra were not viewed important to a career in pharmacy. Conclusion. Students’ experience in pharmacy and year of study influenced their perceptions of subjects relevant to a pharmacy career. Pharmacy educators need to consider how they can help students recognize the importance of scientific knowledge earlier in the pharmacy curriculum

    OK, you have collected a large amount of big data. Now what?

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    Instead of sitting on data, firms can use it to gain a competitive advantage, argues Michael E. Prescot

    Inconvenient Truths: Facts and Frictions in Defense of Guardians Ad Litem for Children

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    During the 2013 Maine legislative session, citizens, elected officials, and professionals passionately expressed their beliefs concerning the legitimacy and efficacy of guardian ad litem [GAL] appointments in private child custody cases. In many respects, this policy discussion mirrored national trends in the scholarly and social science literature concerning allegations of the overuse or capacious role of a GAL. Establishing the proper legal and scientific contours within which GALs may serve the best interests of children and simultaneously provide constructive investigative and evidence-informed recommendations to judicial fact finding remains a proper concern for proponents and critics alike. The challenge, in this era of emotion and visceral responses to even the most sincere disputes, is how to engage in meaningful policy, practice, and legislative changes which effectively and responsibly serve the complex needs of modern family systems. The specific or precise role of a GAL differs from state to state but the general definition is a “person, not necessarily a lawyer, who in a litigated matter stands in the place of a party deemed legally incompetent” with the specific authority to act within a peculiar combination of a court’s delegation under the applicable law of that jurisdiction. For the most part, this role is a gyrating function of advocate, educator, evaluator, mediator, investigator, expert witness, social science consumer, and recommender. As one scholar aptly summarized, GALs perform widely diverse and concurrent tasks when assisting the court, and when “resolving custody disputes, visitation schedules, temporary placements, or other matters, legal and ethical issue arise in everyday GAL practices that have important implications for all parties involved. The need for judges to delegate flexible and diverse authority to GALs occurs because: (1) a family court judge cannot ethically perform certain functions in the American judicial system such as home visits and ex parte communications and (2) each family system presents unique social and environmental histories. Both these factors require an archeological approach to digging out some semblance of factual reality, which, if done properly, connects to recommended interventions. From those relatively simple truths of civics and human nature, a key point is inadvertently—or conveniently—missed: a trial judge, sitting on the bench each day with dozens of files containing little more than vague identities and undulating allegations, may only presume the most basic biopsychological context for child custody conflict
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