784 research outputs found

    Lazy AC-Pattern Matching for Rewriting

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    We define a lazy pattern-matching mechanism modulo associativity and commutativity. The solutions of a pattern-matching problem are stored in a lazy list composed of a first substitution at the head and a non-evaluated object that encodes the remaining computations. We integrate the lazy AC-matching in a strategy language: rewriting rule and strategy application produce a lazy list of terms.Comment: In Proceedings WRS 2011, arXiv:1204.531

    Soccer, Stock Returns, and Fanatiscism: Evidence from Turkey

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    Cataloged from PDF version of article.This paper assesses the effect of three major soccer teams' wins on the returns of the Istanbul Stock Exchange (ISE). We argue that the effect of soccer wins on ISE returns increases with the fanaticism of the teams' supporters. (C) 2009 Western Social Science Association. Published by Elsevier Inc. All rights reserved

    On Integral Means for Fractional Calculus Operators of Multivalent Functions

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    2000 Mathematics Subject Classification: Primary 30C45, Secondary 26A33, 30C80Integral means inequalities are obtained for the fractional derivatives and the fractional integrals of multivalent functions. Relevant connections with various known integral means inequalities are also pointed out

    The Spectroscopic Orbits of Three Double-lined Eclipsing Binaries: I. BG Ind, IM Mon, RS Sgr

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    We present the spectroscopic orbit solutions of three double-lines eclipsing binaries, BG Ind, IM Mon and RS Sgr. The first precise radial velocities (RVs) of the components were determined using high resolution echelle spectra obtained at Mt. John University Observatory in New Zealand. The RVs of the components of BG Ind and RS Sgr were measured using Gaussian fittings to the selected spectral lines, whereas two-dimensional cross-correlation technique was preferred to determine the RVs of IM Mon since it has relatively short orbital period among the other targets and so blending of the lines is more effective. For all systems, the Keplerian orbital solution was used during the analysis and also circular orbit was adopted because the eccentricities for all targets were found to be negligible. The first precise orbit analysis of these systems gives the mass ratios of the systems as 0.894, 0.606 and 0.325, respectively for BG Ind, IM Mon and RS Sgr. Comparison of the mass ratio values, orbital sizes and minimum masses of the components of the systems indicates that all systems should have different physical, dynamical and probable evolutionary status.Comment: 17 pages, 6 figures and 4 tables, accepted for publication in New Astronom

    Football and exchange rates: Empirical support for behavioral economics

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    Recently, economic theory has been expanded to incorporate emotions, which have been assumed to play an important role in financial decisions. The present study illustrates this by showing a connection between the sports performance of popular national football teams (Besiktas, Fenerbahce, and Galatasaray) and performance of the Turkish economy. Specifically, a significant positive association was found between the success of three major professional Turkish football teams and the exchange rate of the Turkish lira against the U.S. dollar. The effect of the football success of several Turkish football teams on the exchange rate of the Turkish lira was examined using the simultaneous multiple regression model with predictor measures of wins, losses, and ties for different combinations of teams to predict the depreciation rate of the Turkish lira between the years 1987 and 2003. Wins by Turkish football teams against foreign (non-Turkish) rivals increased with exchange rate depreciation of the Turkish lira against the U.S. dollar. © Psychological Reports 2007

    SRTM VERİLERİ İLE BAZI TOPOĞRAFİK ANALİZLER: ISPARTA ORMAN BÖLGE MÜDÜRLÜĞÜ ÖRNEĞİ

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    Ormancılık çalışmalarında arazinin topoğrafik özelliklerinin bilinmesi oldukça önemlidir. Coğrafi bilgi sistemi ve uzaktan algılama teknolojilerindeki gelişmeler, topoğrafik verilerin elde edilmesini kolaylaştırmıştır. Bu çalışmada, bir uzay mekiğinden yapılan radar algılama sonucunda üretilen ve kısaca SRTM olarak adlandırılan sayısal yükseklik verileri kullanılarak Isparta Orman Bölge Müdürlüğü görev alanındaki idari ünitelerin eğim, bakı ve yükseklik sınıfları gibi topoğrafik analizleri yapılmıştır. Yapılan analizler sonucunda, işletme şeflikleri bazında ortalama eğimin %12 ile %40 arasında değiştiği saptanmıştır. SRTM ve 1/25000 ölçekli sayısal yükseklik pafta verileri, ortalama en yüksek eğime sahip Kuzukulağı Şefliği için karşılaştırılmıştır. Buna göre arazi eğiminde toplamda %7, bakıda %2 ve yükseklikte %3 farklılık bulunmuştur. Sonuç olarak, SRTM verileri kullanılarak arazinin topoğrafik analizlerinin yapılabildiği ve bu verilerin çok yüksek duyarlılık istenen çalışmalar dışında ormancılık uygulamalarında kolaylıkla kullanılabileceği ortaya konulmuştur. Anahtar kelimeler: SRTM, Coğrafi bilgi sistemi, Topoğrafik analiz, Isparta Orman Bölge Müdürlüğü

    Trauma Mechanisms and Injuries Associated with Go-Karting

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    Annually, approximately 600 patients seek medical attention after go-kart accidents in the Netherlands. A large variability in injury patterns can be encountered. Knowledge of the trauma mechanisms of go-kart accidents and insight into the associated injuries is limited and requires improvement. Such additional knowledge may lead to customized trauma protocols for patients with a high index of suspicion on go-kart injuries. Research into trauma mechanisms may also lead to implementation of improved or additional safety measures for go-karting, involving both the go-karts itself as well as prerequisites to the go-kart tracks and qualifications for the drivers. The main trauma mechanisms involved in go-kart accidents, and three cases to illustrate the variety of injuries are described in the current manuscript

    Quantifying the optical properties and chromophore concentrations of turbid media by chemometric analysis of hyperspectral diffuse reflectance data collected using a fourier interferometric imaging system

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    A non-contact Fourier transform interferometric imaging system was used to collect hyperspectral images of the steady-state diffuse reflectance from a point source in turbid media for the spectral range of 550-850 nm. Steady-state diffuse reflectance profiles were generated from the hyperspectral images, and partial least-squares (PLS) regression was performed on the diffuse reflectance profiles to quantify absorption (mu (alpha)) and reduced scattering (mu (s)') properties of turbid media. The feasibility of using PLS regression to predict optical properties was examined for two different sets of spatially-resolved diffuse reflectance data. One set of data was collected from 40 turbid phantoms, while the second set was generated by convolving Monte Carlo simulations with the instrument response of the imaging system. Study results show that PLS prediction of mu (alpha) and mu (s)' was accurate to within +/-8% and +/-5%, respectively, when the model was trained on turbid phantom data. Moreover, PLS prediction of optical properties was considerably faster and more efficient than direct least-squares fitting of spatially-resolved profiles. When the PLS model was trained on Monte Carlo simulated data and subsequently used to predict mu (alpha) and mu (s)' from the diffuse reflectance of turbid phantom, the percent accuracies degraded to +/-12% and +/-5%, respectively. These accuracy values are applicable to homogenous, semi-infinite turbid phantoms with optical property ranges comparable to tissues
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