48,269 research outputs found

    Intersection bounds: estimation and inference

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    We develop a practical and novel method for inference on intersection bounds, namely bounds defined by either the infimum or supremum of a parametric or nonparametric function, or equivalently, the value of a linear programming problem with a potentially infinite constraint set. Our approach is especially convenient for models comprised of a continuum of inequalities that are separable in parameters, and also applies to models with inequalities that are non-separable in parameters. Since analog estimators for intersection bounds can be severely biased in finite samples, routinely underestimating the size of the identified set, we also offer a median-bias-corrected estimator of such bounds as a natural by-product of our inferential procedures. We develop theory for large sample inference based on the strong approximation of a sequence of series or kernel-based empirical processes by a sequence of "penultimate" Gaussian processes. These penultimate processes are generally not weakly convergent, and thus non-Donsker. Our theoretical results establish that we can nonetheless perform asymptotically valid inference based on these processes. Our construction also provides new adaptive inequality/moment selection methods. We provide conditions for the use of nonparametric kernel and series estimators, including a novel result that establishes strong approximation for any general series estimator admitting linearization, which may be of independent interest.

    James Bond: international man of gastronomy

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    This article is concerned with the representation of food and drink in Ian Fleming’s James Bond novels. In particular, it examines how the author uses Bond’s culinary knowledge and habits of consumption as an important constituent of his hero’s character. Similarly, the food choices of other characters, notably villains, are shown to be linked, by Fleming, to core aspects of their identity − principally their ethnicity. Bond’s impulse to observe and classify, very much in evidence in the novels’ food sequences, is examined in terms of the texts’ construction of Bond as a skilled identifier of signs

    Philip Strong letter to Reuben Wood, January 27, 1852

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    Legal correspondence written by Philip Strong to Governor Reuben Wood regarding a warrant to arrest Peyton Polly, dated January 27, 1852. Reuben Wood was governor of Ohio from 1850 through 1853, and was closely involved with the Peyton Polly case and attempts to secure the Polly family's release. Peyton Polly and his family were freedmen living in Lawrence County, Ohio, when they were kidnapped on June 6, 1850, and sold back into slavery in Kentucky and Virginia

    Mary Strong

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    Internationalization at Harvard

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    The aim of this essay is to describe internationalization at Harvard University. Founded by European colonists in 17th century New England, Harvard has historic international roots. By the mid 1900’s it had become an international powerhouse attracting top students, academics and scientists from around the world. Yet, the University is international almost by default as it has reacted to world affairs. Looking toward the future, President Drew Faust has outlined a strategy to become “intentionally global”. One model, begun ten years ago, serves as an example for the future. In 2002 the University established its first overseas office designed to represent the entire institution. The theory was that a modest local infrastructure would encourage students and faculty to expand international collaborations and make a difference in the region benefiting from this presence. The results have been highly successful. The Regional Office in Santiago Chile, representing Argentina, Bolivia, Chile, Peru, and Uruguay, has catalyzed engagement of over 3000 faculty and students in the last ten years. Over 50 significant collaborative research programs have benefitted thousands of preschool children, pioneered new approaches to disaster relief, improved health care, revolutionized public housing, and led to scientific breakthroughs. This model of a small physical footprint exerting large academic influence will be one of the central strategies as Harvard looks toward the future. DOI: 10.18870/hlrc.v3i2.11

    Waking Ned Devine

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    Waking Ned Devine (1998, IRE) by Kirk Jones Main Cast: Ian Bennen, David Kelly Company: 20th Century Fox In a small Irish village one person wins the lottery. The old friends Jackie and Michael want to find out who, and finally find Ned Devine, who died the very same time he won. The whole village finally frames the lotto company to get hold of the lottery win. Scene: alcohol male adolescent or children strong tobacco nontransgressive in company 1:21:30-1:21:56: alcohol/tobacco In this scene the village celebrates the lottery win. Maurice a boy drinks some alcohol and smokes a cigar. He feels grown up and adult. The whole village is celebrating so one might find it ok that also the boy is having some alcohol. On the other side it is more likely that the scene evokes negative reactions as a child drinks alcohol and no one interferes. Clip: 33

    Letter to John Strong from His Brother L.A. Strong

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    The letter gives news of crops and harvesting. The author notes that Vicksburg has been taken by Union forces and says the 71st Indiana Regiment was camped near Bloomington looking for secessionists and found some in Indian Creek Township and Greene County. The author describes the formation of "our militia cavalry.

    On Tail Index Estimation for Dependent, Heterogenous Data

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    In this paper we analyze the asymptotic properties of the popular distribution tail index estimator by B. Hill (1975) for possibly heavy- tailed, heterogenous, dependent processes. We prove the Hill estimator is weakly consistent for processes with extremes that form mixingale sequences, and asymptotically normal for processes with extremes that are near-epoch-dependent on the extremes of a mixing process. Our limit theory covers infinitely many ARFIMA and FIGARCH processes, stochastic recurrence equations, and simple bilinear processes. Moreover, we develop a simple non-parametric kernel estimator of the asymptotic variance of the Hill estimator, and prove consistency for extremal-NED processes.Hill estimator; regular variation; infinite variance; near epoch dependence; mixingale; kernel estimator; tail array sum.
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