4,285 research outputs found

    Einstein: His Space and Times

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    The commonly held view of Albert Einstein is of an eccentric genius for whom the pursuit of science was everything. But in actuality, the brilliant innovator whose Theory of Relativity forever reshaped our understanding of time was a man of his times, always politically engaged and driven by strong moral principles. An avowed pacifist, Einstein’s mistrust of authority and outspoken social and scientific views earned him death threats from Nazi sympathizers in the years preceding World War II. To him, science provided not only a means for understanding the behavior of the universe, but a foundation for considering the deeper questions of life and a way for the worldwide Jewish community to gain confidence and pride in itself. This biography presents Einstein in the context of the world he lived in, offering a fascinating portrait of a remarkable individual who remained actively engaged in international affairs throughout his life. This revealing work not only explains Einstein’s theories in understandable terms, it demonstrates how they directly emerged from the realities of his times and helped create the world we live in today. [From the Publisher]https://cupola.gettysburg.edu/books/1089/thumbnail.jp

    00. Introduction

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    One of the most wonderful aspects of the job of university professor is that one’s occupation is based on an area of personal expertise that shapes one’s Being. So it is with Richard C. “Dick” Richards, who, amongst other areas of specialization, is a philosopher of love. Richard’s Being is one deeply entrenched in love. There is, of course, the romantic love he long shared with his recently passed wife Marty, but there is also the love of many, many students and colleagues, both in and beyond the department at California State Polytechnic University at Pomona, and undeniably his love for poetry, humor, and the philosophy to which he dedicated so many years. Most of all, though, is (as cliché as this sounds), his love of life. Few people so embody the virtues they discuss, living so vitally and thereby affecting the lives of so many who come in contact with them, even briefly, that this love is shared by so many. This volume is intended as a testament to that love given and now redirected back toward Richard C. Richards. [excerpt

    Invariance: A Tale of Intellectual Migration

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    The plotline of the standard story told about the development of intellectual history at the end of the 19th/turn of the 20th century follows the move from absolutism to perspectivalism. The narrative takes us, on the one hand, from the scientism of late Enlightenment writers like Voltaire, Mill, D’Alebert, and Comte and the historical determinism of Hegel, all of which were based upon a universal picture of rationality, to, on the other hand, the relativistic physics of Einstein, the perspectival art of Picasso, and the individualism of Nietzsche and Kierkegaard leading to the phenomenology of Husserl and Heidegger to and on through the deconstructivist work of Derrida in which universal proclamations were deemed meaningless. In their place, was relative dependent upon subjective, political, and social factors, influences, and interpretations. Like all sketches, of course, the story is more complicated than that. There is another trend in the intellectual air of the early 20th century that gets left out of this oversimplified picture, one that threads a middle path between absolutism and perspectivalism, a path that considers both frame-dependent or covariant truths and frame-independent or invariant truths and examines the relations between them. Indeed, the notions of covariance and invariance play important roles in the development of the fields of mathematics, physics, philosophy, and psychology in the decades after the turn of the 20th century. The migration of the concepts of invariance and covariance illustrates not only the interconnectedness of the working communities of intellectuals, but also displays ways in which the personal, social, and political overlaps between groups of disciplinary thinkers are essential conduits for the conceptual cross-fertilization that aids in the health of our modern fields of study. [excerpt

    06. Richard Richards, Robert Roberts, and Aristotelian Aristotelianism

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    This paper is a tribute to a philosopher and a person I have long admired, Richard C. Richards. As a clear and rigorous thinker, a thoughtful and accessible writer, and as a kind, blunt, and extremely funny person, Richard embodies virtues I hope to someday claim as well. [excerpt

    April Fools’ Day, A Celebration of All Things Creative

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    April Fools\u27 Day is unique among our holidays because it is the only one for which ingenuity is required. Other festivals are celebrated with expectations of prepackaged icons. Try serving something other than turkey for Thanksgiving and you are likely to face a revolt. Holidays are bastions of repetition, but April Fools\u27 Day is a commemoration of creativity. [excerpt

    Evolution and the Second Law of Thermodynamics: Effectively Communicating to Non-Technicians

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    Given the degree of disbelief in the theory of evolution by the wider public, scientists need to develop a collection of clear explanations and metaphors that demonstrate the working of the theory and the flaws in antievolutionist arguments. This paper presents tools of this sort for countering the anti-evolutionist claim that evolutionary mechanisms are inconsistent with the second law of thermodynamics. Images are provided to replace the traditional misunderstanding of the law, i.e., “everything always gets more disordered over time,” with a more clear sense of the way in which entropy tends to increase allowing a thermally isolated system access to a greater number of microstates. Accessible explanations are also provided for the ways in which individual organisms are able to minimize entropy and the advantages this conveys

    Sylvester: Ushering in the Modern Era of Research on Odd Perfect Numbers

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    In 1888, James Joseph Sylvester (1814-1897) published a series of papers that he hoped would pave the way for a general proof of the nonexistence of an odd perfect number (OPN). Seemingly unaware that more than fifty years earlier Benjamin Peirce had proved that an odd perfect number must have at least four distinct prime divisors, Sylvester began his fundamental assault on the problem by establishing the same result. Later that same year, he strengthened his conclusion to five. These findings would help to mark the beginning of the modern era of research on odd perfect numbers. Sylvester\u27s bound stood as the best demonstrated until Gradstein improved it by one in 1925. Today, we know that the number of distinct prime divisors that an odd perfect number can have is at least eight. This was demonstrated by Chein in 1979 in his doctoral thesis. However, he published nothing of it. A complete proof consisting of almost 200 manuscript pages was given independently by Hagis. An outline of it appeared in 1980. What motivated Sylvester\u27s sudden interest in odd perfect numbers? Moreover, we also ask what prompted this mathematician who was primarily noted for his work in algebra to periodically direct his attention to famous unsolved problems in number theory? The objective of this paper is to formulate a response to these questions, as well as to substantiate the assertion that much of the modern work done on the subject of odd perfect numbers has as it roots, the series of papers produced by Sylvester in 1888

    Elaboration versus suppression of cued memories: influence of memory recall instruction and success on parietal lobe, default network, and hippocampal activity.

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    Functional imaging studies of episodic memory retrieval consistently report task-evoked and memory-related activity in the medial temporal lobe, default network and parietal lobe subregions. Associated components of memory retrieval, such as attention-shifts, search, retrieval success, and post-retrieval processing also influence regional activity, but these influences remain ill-defined. To better understand how top-down control affects the neural bases of memory retrieval, we examined how regional activity responses were modulated by task goals during recall success or failure. Specifically, activity was examined during memory suppression, recall, and elaborative recall of paired-associates. Parietal lobe was subdivided into dorsal (BA 7), posterior ventral (BA 39), and anterior ventral (BA 40) regions, which were investigated separately to examine hypothesized distinctions in sub-regional functional responses related to differential attention-to-memory and memory strength. Top-down suppression of recall abolished memory strength effects in BA 39, which showed a task-negative response, and BA 40, which showed a task-positive response. The task-negative response in default network showed greater negatively-deflected signal for forgotten pairs when task goals required recall. Hippocampal activity was task-positive and was influenced by memory strength only when task goals required recall. As in previous studies, we show a memory strength effect in parietal lobe and hippocampus, but we show that this effect is top-down controlled and sensitive to whether the subject is trying to suppress or retrieve a memory. These regions are all implicated in memory recall, but their individual activity patterns show distinct memory-strength-related responses when task goals are varied. In parietal lobe, default network, and hippocampus, top-down control can override the commonly identified effects of memory strength

    Entry & Exit: The Lifecyle of a Hedge Fund

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    Using data from the TASS/Tremont hedge fund database, this article performs an empirical analysis of the evolution of the hedge fund industry within an industrial organization framework.Hedge Funds, Entry, Exit, Evolution, Hedge Fund Performance, Hedge Fund Styles, Incumbents, Entrants, Lifecyle, Competition, Market for Ideas,

    An Ernie Banks Season

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    The dawn of the baseball season is an existential moment. For big market teams with owners willing to pay for marquee players, and general managers who build playoff-bound teams, it is a time of great anticipation. It\u27s also a time of hope, albeit dim, for those die-hard fans of teams who are off the playoff pace by double digits year in and year out. Their cautious optimism is one that illuminates the human condition. [excerpt
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