10,178 research outputs found

    Rising Inequality and the Financial Crises of 1929 and 2008

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    Inequality increased dramatically in the decades leading up to the financial crises of both 1929 and 2008. Yet students of both crises have largely ignored any role that rising inequality might have played in rendering the financial sector more vulnerable to systemic dysfunction. This study draws upon the work of Thorstein Veblen, Michal Kalecki, and Karl Marx to clarify the manner in which growing inequality prior to both crises made U.S. financial markets more prone to systemic dysfunction. Greater inequality generated three dynamics that heightened conditions in which these financial crises might occur. The first is that greater inequality meant that individuals were forced to struggle harder to find ways to consume more to maintain their relative social status, thereby reducing their savings and increasing their indebtedness. The second is that holding ever greater income and wealth, the elite flooded financial markets with credit, helping keep interest rates low and encouraging the creation of new credit instruments. The third dynamic is that, as the rich took larger shares of income and wealth, they gained more command over ideology and hence politics. Reducing the size of government, tax cuts for the rich, deregulating the economy, and failing to regulate newly evolving credit instruments flowed out of this ideology.

    Holiday Classic 1967 Nevada Southern Rebels Arizona State University University of Pacific Loyola University

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    Dear NSU Sports Fan: Welcome to another, and we hope for all of us a successful, Nevada Southern University Intercollegiate Athletics sporting event. We sincerely hope you enjoy this major sports activity, as your attendance has indicated your continued enjoyment of games in past seasons. You are watching the NSU Rebels, one of the best teams in the country - a team ranked in the Top 10 in the nation in their division last year. We of the University are justly proud of our fine athletics, and the excellent job of coaching and program directing being done by Coach Rolland Todd and Athletic Director Michael Drakulich. We feel certain your support of all our teams, present and future, will by their showing of skill and sportsmanship in this game, be justified. We thank all our loyal fans for their support. A special Thank You must go to members of the Century Club, a part of the University Rebel Club, for their unequalled contributions to the NSU Athletic Program. Again, welcome - and thank you for coming. DR. DONALD C. MOYER Chancellor A Rebel Booste

    Traction force microscopy on soft elastic substrates: a guide to recent computational advances

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    The measurement of cellular traction forces on soft elastic substrates has become a standard tool for many labs working on mechanobiology. Here we review the basic principles and different variants of this approach. In general, the extraction of the substrate displacement field from image data and the reconstruction procedure for the forces are closely linked to each other and limited by the presence of experimental noise. We discuss different strategies to reconstruct cellular forces as they follow from the foundations of elasticity theory, including two- versus three-dimensional, inverse versus direct and linear versus non-linear approaches. We also discuss how biophysical models can improve force reconstruction and comment on practical issues like substrate preparation, image processing and the availability of software for traction force microscopy.Comment: Revtex, 29 pages, 3 PDF figures, 2 tables. BBA - Molecular Cell Research, online since 27 May 2015, special issue on mechanobiolog

    Effect of vitamin D supplementation on blood pressure:a systematic review and meta-analysis incorporating individual patient data

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    D-PRESSURE Collaboration: et al.[Importance]: Low levels of vitamin D are associated with elevated blood pressure (BP) and future cardiovascular events. Whether vitamin D supplementation reduces BP and which patient characteristics predict a response remain unclear.[Objective]: To systematically review whether supplementation with vitamin D or its analogues reduce BP.[Data Sources]: We searched MEDLINE, CINAHL, EMBASE, Cochrane Central Register of Controlled Trials, and http://www.ClinicalTrials.com augmented by a hand search of references from the included articles and previous reviews. Google was searched for gray literature (ie, material not published in recognized scientific journals). No language restrictions were applied. The search period spanned January 1, 1966, through March 31, 2014.[Study Selection]: We included randomized placebo-controlled clinical trials that used vitamin D supplementation for a minimum of 4 weeks for any indication and reported BP data. Studies were included if they used active or inactive forms of vitamin D or vitamin D analogues. Cointerventions were permitted if identical in all treatment arms.[Data Extraction and Synthesis]: We extracted data on baseline demographics, 25-hydroxyvitamin D levels, systolic and diastolic BP (SBP and DBP), and change in BP from baseline to the final follow-up. Individual patient data on age, sex, medication use, diabetes mellitus, baseline and follow-up BP, and 25-hydroxyvitamin D levels were requested from the authors of the included studies. For trial-level data, between-group differences in BP change were combined in a random-effects model. For individual patient data, between-group differences in BP at the final follow up, adjusted for baseline BP, were calculated before combining in a random-effects model.[Main Outcomes and Measures]: Difference in SBP and DBP measured in an office setting.[Results]: We included 46 trials (4541 participants) in the trial-level meta-analysis. Individual patient data were obtained for 27 trials (3092 participants). At the trial level, no effect of vitamin D supplementation was seen on SBP (effect size, 0.0 [95% CI, −0.8 to 0.8] mm Hg; P = .97; I2 = 21%) or DBP (effect size, −0.1 [95% CI, −0.6 to 0.5] mm Hg; P = .84; I2 = 20%). Similar results were found analyzing individual patient data for SBP (effect size, −0.5 [95% CI, −1.3 to 0.4] mm Hg; P = .27; I2 = 0%) and DBP (effect size, 0.2 [95% CI, −0.3 to 0.7] mm Hg; P = .38; I2 = 0%). Subgroup analysis did not reveal any baseline factor predictive of a better response to therapy.[Conclusions and Relevance]: Vitamin D supplementation is ineffective as an agent for lowering BP and thus should not be used as an antihypertensive agent.Peer reviewe

    The fundamental theorem of asset pricing, the hedging problem and maximal claims in financial markets with short sales prohibitions

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    This paper consists of two parts. In the first part we prove the fundamental theorem of asset pricing under short sales prohibitions in continuous-time financial models where asset prices are driven by nonnegative, locally bounded semimartingales. A key step in this proof is an extension of a well-known result of Ansel and Stricker. In the second part we study the hedging problem in these models and connect it to a properly defined property of "maximality" of contingent claims.Comment: Published in at http://dx.doi.org/10.1214/12-AAP914 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org

    CONTINGENT CLAIMS VALUED AND HEDGED BY PRICING AND INVESTING IN A BASIS

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    Contingent claims with payoffs depending on finitely many asset prices are modeled as elements of a separable Hilbert space. Under fairly general conditions, including market completeness, it is shown that one may change measure to a reference measure under which asset prices are Gaussian and for which the family of Hermite polynomials serves as an orthonormal basis. Basis pricing synthesizes claim valuation and basis investment provides static hedging opportunities. For claims written as functions of a single asset price we infer from observed option prices the implicit prices of basis elements and use these to construct the implied equivalent martingale measure density with respect to the reference measure, which in this case is the Black-Scholes geometric Brownian motion model. Data on S&P 500 options from the Wall Street Journal are used to illustrate the calculations involved. On this illustrative data set the equivalent martingale measure deviates from the Black-Scholes model by relatively discounting the larger price movements with a compensating premia placed on the smaller movements.Contingent claims, options, Hilbert space, Hermite, S & P 500 index

    PERFORMANCE MEASUREMENT AND EVALUATION

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    This chapter discusses methods and techniques for measuring and evaluating performance for the purpose of controlling the investment process. However, many of the methods discussed in this chapter are also used in communicating investment performance between the investment management company and it’s (potential) customers. Therefore, performance measurements also play an important role in the competition between investments management companies. Substantial evidence from the net sales of mutual funds shows that investors buy mutual funds with good past performance records although they fail to sell funds with bad past performance.Performance measurement; risk-adjusted performance
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