228 research outputs found

    Material Processing Using a C02 Laser

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    The Short-Term Impact Of Super Bowl Advertising On Stock Prices: An Exploratory Event Study

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    Advertisers are under pressure to demonstrate the financial effectiveness of their advertising.  Event study methodology utilizing measurement and comparison of stock prices may be one way to address this concern.  In this study, our results suggest that while advertising in the Super Bowl does not have a significant positive impact on a firm’s stock price the day after the Super Bowl, when considering windows from two to four days before and after there is a significant positive stock price effect.  Additionally, we found the current method advertisers use to judge the effectiveness of Super Bowl advertising (i.e. likeability with the USA Today poll and Advertising Age poll) had no significant relationship with financial effectiveness as measured by stock price.  This suggests that the methods marketers use to judge Super Bowl advertising effectiveness may not be good measures of success in financial terms.  Finally, our results suggest that if a firm does choose to advertise in the Super Bowl, they may want to pick the second quarter for their ad and that they need to maximize pre-Super Bowl publicity due to the impact on stock price before the Super Bowl

    Program of UM Pharmacy School becomes more patient-oriented

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    Published in the Association of Marketing Theory and Practice Proceeding

    The Impact Of Unethical Reasoning On Different Types Of Academic Dishonesty: An Exploratory Study

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    This paper offers support that those students who felt they had stronger reasons for committing unethical academic behaviors are more likely to report committing academic dishonesty than those who felt they had weaker reasons for unethical academic behaviors.  This relationship held for all four categories of academic dishonesty:  cheating (on tests), seeking outside help, plagiarism (on papers), and E-cheating (electronic cheating on tests).  This suggests that students are rationalizing their academic dishonest behaviors and those students who feel they have stronger reasons for committing academic dishonesty are more likely to be academically dishonest.&nbsp

    Interactive Technology In The Classroom: An Exploratory Look At Its Use And Effectiveness

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    This paper proposes that Interactive Technology can help professors enhance communication, attitudes, and interest in the classroom.  This paper describes Interactive Technology, how professors can use it, and preliminary findings of its effectiveness.  These findings suggest that the use of Interactive Technology can enhance students’ attitudes.  Additionally, students surveyed, who had used Interactive Technology in a Consumer Behavior course agreed that its use made the course more interesting and attention getting, and they were satisfied with the course.  Preliminary findings, however, also suggest that Interactive Technology may not enhance attendance, course preparation, and retention.&nbsp

    Gyroscopic Precession and Inertial Forces in Axially Symmetric Stationary Spacetimes

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    We study the phenomenon of gyroscopic precession and the analogues of inertial forces within the framework of general relativity. Covariant connections between the two are established for circular orbits in stationary spacetimes with axial symmetry. Specializing to static spacetimes, we prove that gyroscopic precession and centrifugal force both reverse at the photon orbits. Simultaneous non-reversal of these in the case of stationary spacetimes is discussed. Further insight is gained in the case of static spacetime by considering the phenomena in a spacetime conformal to the original one. Gravi-electric and gravi-magnetic fields are studied and their relation to inertial forces is established.Comment: 21 pages, latex, no figures, http://202.41.67.76/~nayak/gpifass.te

    All solutions of the localization equations for N=2 quantum black hole entropy

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    We find the most general bosonic solution to the localization equations describing the contributions to the quantum entropy of supersymmetric black holes in four-dimensional N=2 supergravity coupled to n_v vector multiplets. This requires the analysis of the BPS equations of the corresponding off-shell supergravity (including fluctuations of the auxiliary fields) with AdS2 \times S2 attractor boundary conditions. Our work completes and extends the results of arXiv:1012.0265 that were obtained for the vector multiplet sector, to include the fluctuations of all the fields of the off-shell supergravity. We find that, when the auxiliary SU(2) gauge field strength vanishes, the most general supersymmetric configuration preserving four supercharges is labelled by n_v+1 real parameters corresponding to the excitations of the conformal mode of the graviton and the scalars of the n_v vector multiplets. In the general case, the localization manifold is labelled by an additional SU(2) triplet of one-forms and a scalar function.Comment: 27 page

    Logarithmic Corrections to Extremal Black Hole Entropy from Quantum Entropy Function

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    We evaluate the one loop determinant of matter multiplet fields of N=4 supergravity in the near horizon geometry of quarter BPS black holes, and use it to calculate logarithmic corrections to the entropy of these black holes using the quantum entropy function formalism. We show that even though individual fields give non-vanishing logarithmic contribution to the entropy, the net contribution from all the fields in the matter multiplet vanishes. Thus logarithmic corrections to the entropy of quarter BPS black holes, if present, must be independent of the number of matter multiplet fields in the theory. This is consistent with the microscopic results. During our analysis we also determine the complete spectrum of small fluctuations of matter multiplet fields in the near horizon geometry.Comment: LaTeX file, 52 pages; v2: minor corrections, references adde

    Supersymmetry, Localization and Quantum Entropy Function

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    AdS_2/CFT_1 correspondence leads to a prescription for computing the degeneracy of black hole states in terms of path integral over string fields living on the near horizon geometry of the black hole. In this paper we make use of the enhanced supersymmetries of the near horizon geometry and localization techniques to argue that the path integral receives contribution only from a special class of string field configurations which are invariant under a subgroup of the supersymmetry transformations. We identify saddle points which are invariant under this subgroup. We also use our analysis to show that the integration over infinite number of zero modes generated by the asymptotic symmetries of AdS_2 generate a finite contribution to the path integral.Comment: LaTeX file, 31 pages; v2: minor correction; v3: typos correcte
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