FROM THE HISTORY OF PHYSICS: Stories by Yurii Borisovich Rumer
Rumer, Yurii B.
2001-10-01
Yurii Borisovich Rumer (Yu B) was an excellent story-teller. Grateful listeners long remembered his stories about life in the first years after the 1917 Great Socialist Revolution in Russia, about the Göttingen School, about Albert Einstein, about Soviet physicists, about the years he spent in prison and in the secret research institution where all researchers and staff were prisoners. Unfortunately, nobody was perceptive enough to record these stories for posterity. Yu B himself would not agree to it as after the many years of his gruesome prison experience he was always cautious and carefully censored his stories himself according to the audience and the political climate of the period. The few reminiscences published in his lifetime also exhibit evidence of such self-censorship. M P Kemoklidze made detailed records but she says she destroyed them after publishing the book Quantum age (1989) for which they were intended. Here we are publishing a transcript of the tape recording made by Anna Livanova in 1962 when Yu B visited her in Moscow (she knew him from her days as a student of the Physics Department of Moscow State University). When Livanova was on a business trip to the Novosibirsk Academy Town she attended a talk given by Yu B to the students of Novosibirsk University at which they asked him to tell of the most important occasion in his life. He said it was his meeting with Einstein. In Moscow Livanova recorded an extended version of that talk. Livanova used the recording for writing the essays ''Academy Town in Siberia'' (Znamya magazine, No. 11, 12, 1962) and ''Physicists about Physicists'' (in the book Roads to the Unknown — Writers Telling about Science in which a section was entitled 'Meeting with Einstein'), and her book 'Physicists about Physicists' (Moscow: 'Molodaya Gvardiya' Publishers, 1968) which also included a section on Rumer's meeting with Einstein. The publications were significantly edited and only a part of the recording transcript
Yurii Pavlovich Popov February 13, 1928 February 24, 2005 (On the 80th anniversary of his birth)
Andrzejewski, J.; Gledenov, Yu. M.; Popova, V. M.; Sukhovoi, A. M.; Khuukhenkhuu, G.
2008-07-01
The scientific biography of the distinguished physicist experimentalist and prominent expert in the field of neutron nuclear physics Yurii Pavlovich Popov (13.02.1928 24.02.2005) is presented, including his work at Lebedev Physical Institute, AS USSR and the Joint Institute for Nuclear Research. Yu.P. Popov was a member of the editorial board of the journal Physics of Particles and Nuclei from 1971 to the end of his life.
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2009-01-01
Full Text Available Исполнилось 60 лет со дня рождения заведующего 2-й кафедрой внутренних болезней Белорусского государственного медицинского университета, главного редактора журнала «Здравоохранение», главного ревматолога Министерства здравоохранения Республики Беларусь, доктора медицинских наук, профессора Николая Федоровича Сороки. Н.Ф.Сорока родился 2 января 1949 г. в деревне Осинники Каменецкого района Брестской области. В 1966г. после окончания средней школы с золотой медалью поступил на лечебный факультет Минского государственного медицинского института, который закончил с отличием в 1972 г. Затем в течение трех лет работал врачом-ординатором кардиологического отделения 2-й городской клинической больницы г. Минска.Со дня поступления в аспирантуру в 1975г. до настоящего времени его судьба неразрывно связана со 2-й кафедрой внутренних болезней МГМИ. В 1978 г. Николай Федорович защитил кандидатскую диссертацию, которая была посвящена изучению патогенетических механизмов развития системной красной волчанки и системной склеродермии.После окончания аспирантуры работал ассистентом, а с 1986 г. доцентом данной кафедры. В 1992 г. Н. Ф. Сорока защитил в специализированном совете в НИИ ревматологии Российской академии медицинских наук докторскую диссертацию на тему «Клинико-биохимические аспекты ревматоидного артрита и пути оптимизации лечения». В своей диссертации Н.Ф. Сорока изложил результаты изучения закономерностей функционирования биохимических регуляторных и модуляторных систем организма, что позволило ему представить оригинальные подходы к общей и местной терапии больных ревматоидным артритом и другими ревматическими заболеваниями в периоды обострения и ремиссии. В диссертации, в частности, были выполнены приоритетные разработки по новым методам лечения ревматоидного артрита и синдрома Шегрена с использованием низкоинтенсивного лазерного излучения, ингибиторов протеаз и других лекарственных средств.Автор также много внимания уделил изучению донозологического периода и ранней стадии ревматоидного артрита. На модели адъювантного артрита он продемонстрировал возможность первичной профилактики гипериммунного артрита. Направление по изучению ранней стадии ревматоидного артрита за рубежом стало приоритетным лишь в XXI веке.Научные интересы профессора Н.Ф. Сороки связаны в основном с изучением механизмов патогенеза, методов диагностики, включая раннюю, и профилактики системных заболеваний соединительной ткани и болезней суставов. В последнее десятилетие основным научным направлением, разрабатываемым профессором Н.Ф. Сорокой, является изучение роли апоптоза лимфоцитов, а также влияния вирусных и бактериальных инфекций при этих заболеваниях. Под его руководством получены новые научные данные относительно роли вируса гепатита С в развитии ревматических заболеваний, а также хламидийной инфекции — в возникновении и течении как реактивного, так и ревматоидного артрита. Н.Ф. Сорока руководит научными исследованиями, выполняемыми его сотрудниками в рамках Государственной научно-технической программы«Лечебные и диагностические технологии», участвует в многоцентровых международных проектах в области кардиологии и ревматологии. Профессор Н. Ф. Сорока является терапевтом широкого профиля. Его научные интересы не ограничиваются ревматологией. Им подготовлены кандидаты медицинских наук по кардиологии, пульмонологии, гастроэнтерологии, гематологии, внутренним болезням. Совместно со своими учениками Н.Ф. Сорока исследовал значение фактора некроза опухоли – альфа при хронической сердечной недостаточности, усовершенствовал применение экстракорпоральных методов в комплексной терапии бронхиальной астмы, вникал в проблемы лечения внебольничных пневмоний и предложил простую классификацию степени тяжести пневмоний, изучал действенность метода суточного мониторирования рН желудочного сока с целью повышения эффективности лечения язв 12-перстной кишки и гастроэзофагеальнорефлюксной болезни, выполнил интересные работы по фармакоэкономическому анализу разных методов лечения. Им были опубликованы первые в Беларуси статьи по антифосфолипидному синдрому, остеопорозу, Лайм-боррелиозу, фибромиалгии – заболеваниям, которые сегодня стали достаточно часто диагностироваться в повседневной клинической практике. Всего Н.Ф.Сорокой опубликовано более 400 научных работ, в том числе 7 монографий, 14 руководств, справочников и научно-популярных книг. Он является автором 9 патентов на изобретения. Под руководством Николая Федоровича защищены 2 докторские и 16 кандидатских диссертаций. С 1987 по 1991 гг. Н. Ф. Сорока одновременно был деканом лечебного факультета, с 1991 по 2001 г. — проректором БГМУ по лечебной работе, в течение полутора лет (1996—1997г. исполнял обязанности ректора БГМУ. Однако работа в клинике для него всегда была важнее любой административной должности. Николай Федорович много времени уделяет лечебно-консультативной работе с пациентами. Он консультирует больных в терапевтических отделениях 9-й клинической больницы, в Минском городском консультационно-диагностическом центре, Республиканском медицинском клиническом центре УД Президента Республики Беларусь. Из областей Беларуси к нему направляют на консультацию диагностически неясных, трудных пациентов. Профессор Н.Ф. Сорока является большим авторитетом в области ревматологии и терапии не только в Беларуси, но и в России, на Украине, других странах СНГ.Он — прекрасный лектор. Его выступления перед врачами, лекции для студентов неизменно вызывают неподдельный интерес. Есть немало врачей, которые на лекции и доклады Н.Ф. Сороки на конференциях, семинарах или симпозиумах приходят как в театр на спектакли любимых актеров. Свою лечебно-консультативную, педагогическую и научную деятельность Николай Федорович успешно совмещает с активной общественной работой. Он является членом двух советов по защите докторских диссертаций по специальностям«Кардиология», «Ревматология» и «Внутренние болезни», председателем Белорусского общества терапевтов, членом Правления Белорусского научного общества кардиологов, председателем комиссии по изданию учебной медицинской литера- туры при Министерстве образования Республики Беларусь, председателем методической комиссии терапевтических дисциплин БГМУ, членом редколлегий журналов «Медицинские новости», «Международные медицинские обзоры», «Рецепт»,«Научно-практическая ревматология» (Россия, «Украинский ревматологический журнал», членом экспертного совета по лекарственным препаратам при Госкомитете по науке и технологиям, в течение лет был членом президиума ВАК Беларуси. За многолетний добросовестный труд, высокий профессионализм, успехи в подготовке и воспитании молодых кадров, значимый вклад в развитие здравоохранения Республики Беларусь профессор Н.Ф. Сорока награжден знаком «Отличнику здравоохранения», золотой медалью А. Швейцера. Профессор Н. Ф. Сорока пользуется заслуженным уважением у коллег по работе, врачей республики, студентов и многочисленных пациентов. Николая Федоровича так же высоко ценят и уважают ученые – ревматологи НИИР РАМН и практические врачи Российской Федерации. Его доклады и выступления на Всероссийских съездах и научно-практических конференциях всегда встречаются с большим интересом и вниманием, так как содержат новые мысли, обоснованные выводы и богатый фактический материал. Профессор Н.Ф. Сорока на V Юбилейном Съезде ревматологов России, прошедшем в конце марта 2009г. в Москве, удостоен высокого звания Почетного члена Ассоциации ревматологов России.Коллектив сотрудников и руководство Учреждения Российской академии медицинских наук Научно-исследовательского института ревматологии РАМН, Правление Ассоциации ревматологов России, редакция журнала «Научно-практическая ревматология», многочисленные российские врачи – ревматологи сердечно поздравляют видного ученого, врача, организатора здравоохранения и верного друга Николая Федоровича Сороку со славным юбилеем и желают ему дальнейших успехов в большой и многогранной работе, верности учеников и друзей, неизменной любви и уважения пациентов, крепкого здоровья и полного семейного благополучия.
Convergence of Composition Operators on Hardy-Smirnov Space
Xiang Dong YANG
2011-01-01
We consider the convergence of composition operators on Hardy-Smirnov space over a simply connected domain properly contained in the complex plane.The convergence of the power of a composition operator is also considered.Our approach is a method from Joel H.Shapiro and Wayne Smith's celebrated work (Journal of Functional Analysis 205 (2003) 62-89).The resulting space is usually not the one obtained from the classical Hardy space of the unit disc by conformal mapping.
Smirnov's Observable for Free Boundary Conditions, Interfaces and Crossing Probabilities
Izyurov, Konstantin
2015-07-01
We prove convergence results for variants of Smirnov's fermionic observable in the critical planar Ising model in the presence of free boundary conditions. One application of our analysis is a simple proof of a theorem by Hongler and Kytölä on convergence of critical Ising interfaces with plus-minus-free boundary conditions to dipolar SLE(3), and a generalization of this result to an arbitrary number of arcs carrying plus, minus or free boundary conditions. Another application is a computation of scaling limits of crossing probabilities in the critical FK-Ising model with an arbitrary number of alternating wired/free boundary arcs. We also deduce a new crossing formula for the spin Ising model.
Factoring derivatives of functions in the Nevanlinna and Smirnov classes
Dyakonov, Konstantin M
2011-01-01
We prove that, given a function $f$ in the Nevanlinna class $N$ and a positive integer $n$, there exist $g\\in N$ and $h\\in BMOA$ such that $f^{(n)}=gh^{(n)}$. We may choose $g$ to be zero-free, so it follows that the zero sets for the class $N^{(n)}:=\\{f^{(n)}: f\\in N\\}$ are the same as those for $BMOA^{(n)}$. Furthermore, while the set of all products $gh^{(n)}$ (with $g$ and $h$ as above) is strictly larger than $N^{(n)}$, we show that the gap is not too large, at least when $n=1$. Precisely speaking, the class $\\{gh': g\\in N, h\\in BMOA\\}$ turns out to be the smallest ideal space containing $\\{f': f\\in N\\}$, where "ideal" means invariant under multiplication by $H^\\infty$ functions. Similar results are established for the Smirnov class $N^+$.
Kolmogorov-Smirnov test for spatially correlated data
Olea, R.A.; Pawlowsky-Glahn, V.
2009-01-01
The Kolmogorov-Smirnov test is a convenient method for investigating whether two underlying univariate probability distributions can be regarded as undistinguishable from each other or whether an underlying probability distribution differs from a hypothesized distribution. Application of the test requires that the sample be unbiased and the outcomes be independent and identically distributed, conditions that are violated in several degrees by spatially continuous attributes, such as topographical elevation. A generalized form of the bootstrap method is used here for the purpose of modeling the distribution of the statistic D of the Kolmogorov-Smirnov test. The innovation is in the resampling, which in the traditional formulation of bootstrap is done by drawing from the empirical sample with replacement presuming independence. The generalization consists of preparing resamplings with the same spatial correlation as the empirical sample. This is accomplished by reading the value of unconditional stochastic realizations at the sampling locations, realizations that are generated by simulated annealing. The new approach was tested by two empirical samples taken from an exhaustive sample closely following a lognormal distribution. One sample was a regular, unbiased sample while the other one was a clustered, preferential sample that had to be preprocessed. Our results show that the p-value for the spatially correlated case is always larger that the p-value of the statistic in the absence of spatial correlation, which is in agreement with the fact that the information content of an uncorrelated sample is larger than the one for a spatially correlated sample of the same size. ?? Springer-Verlag 2008.
Multivariate generalizations of the Wald--Wolfowitz and Smirnov two-sample tests
Friedman, J.H.; Rafsky, L.C.
1979-01-01
Multivariate generalizations of the Wald--Wolfowitz runs statistic and the Smirnov maximum deviation statistic for the two-sample problem are presented. They are based on the minimal spanning tree of the pooled sample points. Some null distribution results are derived and a simulation study of power is reported. 5 figures, 2 tables.
Lotka's Law and the Kolmogorov-Smirnov Test: An Error in Calculation.
Loughner, William
1992-01-01
Corrects an error in the calculation of the Kolmogorov-Smirnov (KS) statistic when it is used to empirically confirm or deny the generalized Lotka's law. Examples from the literature are given of both correct and incorrect uses of the KS test and Lotka equations with cumulative distribution functions (CDFs). (six references) (LRW)
José Calvo González
2011-01-01
Full Text Available El trabajo aborda la figura del eminente jurista ruso Anatoliĭ Fedorovich Koni, representativa de la corriente jurídica liberal-moderada en la etapa prerevolucionaria de Rusia. Recupera en su obra su interés por el gran mentor de la literatura rusa moderna, Pushkin, que vincula al programa de modernización inaugurado con las reformas judiciales de 1864. Detalla igualmente las relaciones personales con escritores contemporáneos, entre los que aparecen Chéjov, Dostoiesvki y Tolstói. Sobre esta base proyecta las imbricaciones Derecho y Literatura en una doble dirección, incluyendo las reflexiones jurídicas a partir de textos literarios así como las potencialidades de las categorías jurídicas en la creación literaria. Finalmente, inserta ambas construcciones en el ambiente de una cultura literaria y jurídica que estaba prefigurando el modernismo literario y (efímero y fallido modernismo jurídico.
Boundary form factors in the Smirnov--Fateev model with a diagonal boundary $S$ matrix
Lashkevich, Michael
2008-01-01
The boundary conditions with diagonal boundary $S$ matrix and the boundary form factors for the Smirnov--Fateev model on a half line has been considered in the framework of the free field representation. In contrast to the case of the sine-Gordon model, in this case the free field representation is shown to impose severe restrictions on the boundary $S$ matrix, so that a finite number of solutions is only consistent with the free field realization.
Stage of the Analysis of the Crimean Khanate Sources: V.D. Smirnov »
A.A. Nepomnyashchiy
2015-09-01
Full Text Available On the basis of a substantial body of archival documents of the Institute of Oriental Manuscripts of the Russian Academy of Sciences and the little-known publications, the author has restored laborious work of professor of St. Petersburg University Vasiliy Dmitrievich Smirnov who collected, organized and preserved in the central archival repositories sources for the history of the Crimean Khanate. The author has reconstructed the main events in his life and his activities in the Imperial Public Library related to the concentration in this store of the Crimean Tatar documents (article also contains a short list of his main works. Not limited to the literary sources of Turkey and Russia, Vasiliy Dmitrievich repeatedly worked in the libraries of Budapest, Vienna, London, and Paris. In the 1880’s, he continued to develop the theme of his doctoral thesis and combined literary studies and work in the archives with archaeological researches in the Crimea. The author has analyzed the process of creating of the largest work on the history of the Crimean Khanate, which remains hitherto an unrivaled. V.D. Smirnov managed to summarize Turkish sources (medieval Ottoman and Crimean “chronicles”, most of which have not yet been translated and historiography. This work continues to constitute a historiographical interest in the present. He widely covered, in the first place, the political history of the Crimean Khanate. The author have reviewed the research trip of V.D. Smirnov to the Crimea, his work in local archives, and communication with experts in the Crimean Tatar and Ottoman history. The author has considered the epistolary heritage of the scholar and, on this basis, discovered his academic contacts with leading researchers of Crimea of that time. The author found that he corresponded with such researchers as A.I. Markevich, N.A. Sultan Krym Giray, Z.A. Firkovich, S.M. Shapshal. To V.D. Smirnov belong a comprehensive source study on the history of
Finite sampling inequalities: an application to two-sample Kolmogorov-Smirnov statistics.
Greene, Evan; Wellner, Jon A
2016-12-01
We review a finite-sampling exponential bound due to Serfling and discuss related exponential bounds for the hypergeometric distribution. We then discuss how such bounds motivate some new results for two-sample empirical processes. Our development complements recent results by Wei and Dudley (2012) concerning exponential bounds for two-sided Kolmogorov - Smirnov statistics by giving corresponding results for one-sided statistics with emphasis on "adjusted" inequalities of the type proved originally by Dvoretzky et al. (1956) and by Massart (1990) for one-sample versions of these statistics.
Detecting changes in maps of gamma spectra with Kolmogorov-Smirnov tests
Reinhart, Alex; Athey, Alex
2015-01-01
Various security, regulatory, and consequence management agencies are interested in continuously monitoring wide areas for unexpected changes in radioactivity. Existing detection systems are designed to search for radioactive sources but are not suited to repeat mapping and change detection. Using a set of daily spectral observations collected at the Pickle Research Campus, we improved on the prior Spectral Comparison Ratio Anomaly Mapping (SCRAM) algorithm and developed a new method based on two-sample Kolmogorov-Smirnov tests to detect sudden spectral changes. We also designed simulations and visualizations of statistical power to compare methods and guide deployment scenarios.
Detecting changes in maps of gamma spectra with Kolmogorov–Smirnov tests
Reinhart, Alex, E-mail: areinhar@stat.cmu.edu [Department of Statistics, Carnegie Mellon University, Pittsburgh, PA 15213 (United States); Ventura, Valérie [Department of Statistics, Carnegie Mellon University, Pittsburgh, PA 15213 (United States); Athey, Alex [Applied Research Laboratories, The University of Texas at Austin, Austin, TX 78713 (United States)
2015-12-01
Various security, regulatory, and consequence management agencies are interested in continuously monitoring wide areas for unexpected changes in radioactivity. Existing detection systems are designed to search for radioactive sources but are not suited to repeat mapping and change detection. Using a set of daily spectral observations collected at the Pickle Research Campus, we improved on the prior Spectral Comparison Ratio Anomaly Mapping (SCRAM) algorithm and developed a new method based on two-sample Kolmogorov–Smirnov tests to detect sudden spectral changes. We also designed simulations and visualizations of statistical power to compare methods and guide deployment scenarios.
Monte Carlo exploration of Mikheyev-Smirnov-Wolfenstein solutions to the solar neutrino problem
Shi, X.; Schramm, D. N.; Bahcall, J. N.
1992-01-01
The paper explores the impact of astrophysical uncertainties on the Mikheyev-Smirnov-Wolfenstein (MSW) solution by calculating the allowed MSW solutions for 1000 different solar models with a Monte Carlo selection of solar model input parameters, assuming a full three-family MSW mixing. Applications are made to the chlorine, gallium, Kamiokande, and Borexino experiments. The initial GALLEX result limits the mixing parameters to the upper diagonal and the vertical regions of the MSW triangle. The expected event rates in the Borexino experiment are also calculated, assuming the MSW solutions implied by GALLEX.
A Kolmogorov-Smirnov Based Test for Comparing the Predictive Accuracy of Two Sets of Forecasts
Hossein Hassani
2015-08-01
Full Text Available This paper introduces a complement statistical test for distinguishing between the predictive accuracy of two sets of forecasts. We propose a non-parametric test founded upon the principles of the Kolmogorov-Smirnov (KS test, referred to as the KS Predictive Accuracy (KSPA test. The KSPA test is able to serve two distinct purposes. Initially, the test seeks to determine whether there exists a statistically significant difference between the distribution of forecast errors, and secondly it exploits the principles of stochastic dominance to determine whether the forecasts with the lower error also reports a stochastically smaller error than forecasts from a competing model, and thereby enables distinguishing between the predictive accuracy of forecasts. We perform a simulation study for the size and power of the proposed test and report the results for different noise distributions, sample sizes and forecasting horizons. The simulation results indicate that the KSPA test is correctly sized, and robust in the face of varying forecasting horizons and sample sizes along with significant accuracy gains reported especially in the case of small sample sizes. Real world applications are also considered to illustrate the applicability of the proposed KSPA test in practice.
Durato, M. V.; Albano, A. M.; Rapp, P. E.; Nawang, S. A.
2015-06-01
The validity of ERPs as indices of stable neurophysiological traits is partially dependent on their stability over time. Previous studies on ERP stability, however, have reported diverse stability estimates despite using the same component scoring methods. This present study explores a novel approach in investigating the longitudinal stability of average ERPs—that is, by treating the ERP waveform as a time series and then applying Euclidean Distance and Kolmogorov-Smirnov analyses to evaluate the similarity or dissimilarity between the ERP time series of different sessions or run pairs. Nonlinear dynamical analysis show that in the absence of a change in medical condition, the average ERPs of healthy human adults are highly longitudinally stable—as evaluated by both the Euclidean distance and the Kolmogorov-Smirnov test.
LI Jun; WU Hai-yan; WANG Yun-yi
2004-01-01
Skin sensitive difference of human body sections under clothing is the theoretic foundation of thermal insulation clothing design.By a new method of researching on clothing comfort perception,the skin temperature live changing procedure of human body sections affected by the same cold stimulation is inspected.Furthermore with the Smirnov test the skin temperatures dynamic changing patterns of main human body sections are obtained.
Gelb, James M.; Kwong, Waikwok; Rosen, S. P.
1992-01-01
We compare the implications for Be-7 and pp neutrinos of the two Mikheyev-Smirnov-Wolfenstein fits to the new GALLEX solar neutrino measurements. Small-mixing-angle solutions tend to suppress the former as electron neutrinos, but not the latter, and large-angle solutions tend to reduce both by about a factor of two. The consequences for BOREXINO and similar solar neutrino-electron scattering experiments are discussed.
Kurtz, S.E.; Fields, D.E.
1983-10-01
The KSTEST code presented here is designed to perform the Kolmogorov-Smirnov one-sample test. The code may be used as a stand-alone program or the principal subroutines may be excerpted and used to service other programs. The Kolmogorov-Smirnov one-sample test is a nonparametric goodness-of-fit test. A number of codes to perform this test are in existence, but they suffer from the inability to provide meaningful results in the case of small sample sizes (number of values less than or equal to 80). The KSTEST code overcomes this inadequacy by using two distinct algorithms. If the sample size is greater than 80, an asymptotic series developed by Smirnov is evaluated. If the sample size is 80 or less, a table of values generated by Birnbaum is referenced. Valid results can be obtained from KSTEST when the sample contains from 3 to 300 data points. The program was developed on a Digital Equipment Corporation PDP-10 computer using the FORTRAN-10 language. The code size is approximately 450 card images and the typical CPU execution time is 0.19 s.
Pg Haji Mohd Ariffin, Ak Muhamad Amirul Irfan
2015-01-01
This paper presents the project that I have been tasked while attending a three-month Summer Programme at CERN. The Project specification is to analyse the result of a weekly data produced by Compact Muon Solenoid (CMS) in the form of histograms. CMS is a detector which is a multi-purpose apparatus use to operate at the Large Hadron Collider (LHC) at CERN. It will yield head-on collisions of two proton (ion) beams of 7 TeV (2.75 TeV per nucleon) each, with a design luminosity of 10 34 cm -2s-1. A comparison of the results is then made using two methods namely Kolmogorov Smirnov Statistic Test and Chi-Squared Test. These tests will be further elaborated in the subsequent paragraphs. To execute this project, I have to firstly study the entire basic computer programming in particular C++ and the ROOT Basic Programmes. This is important to ensure the tasks given can be resolved within the given time. A program is subsequently written to provide output of histogram and calculation of Kolmogorov-Smirnov Test and Ch...
Kirill Korkonósenko
2006-12-01
Full Text Available The article of Prof. Alexander Smirnov About the translations of “Don Quixote” was published in 1929, in Leningrad as an introduction to the new version of the novel. This edition set precedent for a new conception of translation from Spanish into Russian and the principles of this conception were formulated in the article of Smirnov, that should be considered the starting point of the modern epoch in the Russian hispanism. Smirnov exposes his conception implicitly: analyzing concrete features of the previous translations he formulates a series of precise and indispensable rules for the modern translators, but he does it in a negative way showing what should not be an “acceptable” translation. We also publish the Spanish translation of Smirnov’s article.
D. Lekomtcev
2015-06-01
Full Text Available The cognitive radio technology allows solving one of the main issues of current wireless communication technologies, namely a deficit of vacant spectrum. A dynamic spectrum access used in the cognitive radio networks (CRN gives an ability to access an unused spectrum in real time. Cooperative spectrum sensing is the most effective method for spectrum holes detecting. It combines sensing information of multiple cognitive radio users. In this paper, an experimental evaluation of spectrum sensing methods based on the Kolmogorov - Smirnov statistical test and Energy Detector using the Universal Software Radio Peripheral (USRP devices synchronized through a MIMO cable and with further processing in the GNU Radio and Matlab software are presented. Three hard decision fusion schemes are analyzed. Simulation comparison between these rules is presented via Receiver Operating Characteristic (ROC curves. The influence of real channel with interferences is compared in contrast to commonly assumed AWGN channel model of vacant channel noise.
Gahangir Hossain
2016-10-01
Full Text Available Smartphones have become a basic necessity in lives of all human beings. Apart from the core functionality of communication, these become a medium for storage of sensitive personal information, financial data and official documents. Hence, there is an inevitable need to emphasize on securing access to such devices considering the nature of data being stored. In addition, accessibility and authentication methods need to secure, robust, and user-friendly. This paper discusses an adaptive authentication mechanism with a nonparametric classification approach, Kolmogorov–Smirnov (K-S statistic, which is coupled with the use of lock pattern dynamics as a secure and user-friendly two-factor authentication method. The data used for experimental exploration were collected from a systematically programmed Android device to capture the temporal parameters when individuals drew lock patterns on the touch screen. Each user has his individualistic way of drawing the pattern, which is used as the key for identifying imposters from valid users.
Chen, H. X.; Chua, Patrick S. K.; Lim, G. H.
2008-10-01
The machinery fault diagnosis is important for improving reliability and performance of systems. Many methods such as Time Synchronous Average (TSA), Fast Fourier Transform (FFT)-based spectrum analysis and short-time Fourier transform (STFT) have been applied in fault diagnosis and condition monitoring of mechanical system. The above methods analyze the signal in frequency domain with low resolution, which is not suitable for non-stationary vibration signal. The Kolmogorov-Smirnov (KS) test is a simple and precise technique in vibration signal analysis for machinery fault diagnosis. It has limited use and advantage to analyze the vibration signal with higher noise directly. In this paper, a new method for the fault degradation assessment of the water hydraulic motor is proposed based on Wavelet Packet Analysis (WPA) and KS test to analyze the impulsive energy of the vibration signal, which is used to detect the piston condition of water hydraulic motor. WPA is used to analyze the impulsive vibration signal from the casing of the water hydraulic motor to obtain the impulsive energy. The impulsive energy of the vibration signal can be obtained by the multi-decomposition based on Wavelet Packet Transform (WPT) and used as feature values to assess the fault degradation of the pistons. The kurtosis of the impulsive energy in the reconstructed signal from the Wavelet Packet coefficients is used to extract the feature values of the impulse energy by calculating the coefficients of the WPT multi-decomposition. The KS test is used to compare the kurtosis of the impulse energy of the vibration signal statistically under the different piston conditions. The results show the applicability and effectiveness of the proposed method to assess the fault degradation of the pistons in the water hydraulic motor.
Zhan, Yimin; Mechefske, Chris K.
2007-07-01
Optimal maintenance decision analysis is heavily dependent on the accuracy of condition indicators. A condition indicator that is subject to such varying operating conditions as load is unable to provide precise condition information of the monitored object for making optimal operational maintenance decisions even if the maintenance program is established within a rigorous theoretical framework. For this reason, the performance of condition monitoring techniques applied to rotating machinery under varying load conditions has been a long-term concern and has attracted intensive research interest. Part I of this study proposed a novel technique based on adaptive autoregressive modeling and hypothesis tests. The method is able to automatically search for the optimal time-series model order and establish a compromised autoregressive model fitting based on the healthy gear motion residual signals under varying load conditions. The condition of the monitored gearbox is numerically represented by a modified Kolmogorov-Smirnov test statistic. Part II of this study is devoted to applications of the proposed technique to entire lifetime condition detection of three gearboxes with distinct physical specifications, distinct load conditions, and distinct failure modes. A comprehensive and thorough comparative study is conducted between the proposed technique and several counterparts. The detection technique is further enhanced by a proposed method to automatically identify and generate fault alerts with the aid of the Wilcoxon rank-sum test and thus requires no supervision from maintenance personnel. Experimental analysis demonstrated that the proposed technique applied to automatic identification and generation of fault alerts also features two highly desirable properties, i.e. few false alerts and early alert for incipient faults. Furthermore, it is found that the proposed technique is able to identify two types of abnormalities, i.e. strong ghost components abruptly
Nugzar K. Ter-Oganov
2015-03-01
Full Text Available This study attempts to analyze the letters of officer/orientalist and military oriental scholar, officer in the Intelligence Section of the Staff of the Caucasian Military District, Staff Captain Konstantin Nikolayevich Smirnov, sent by him from the Turkish and Iranian sectors of the Caucasian front to his wife Kseniya Karlovna Smirnova (Kester over the period 1914–1917. Depending on changes in the deployment of Russian troops fighting against the Turkish army, as well as the German-Turkish block, both in the north-eastern part of Turkey and in the north-west of Iran, K.N. Smirnov had sent those letters from Kamarli, Diadin, Iğdır, Beyazıt, Trebizond, Kazvin, Kermanshah, Kerind, Qasr-e Shirin, Ava now to Tiflis and now to Sevastopol, Hamadan, and Kazvin, where his wife was staying at that particular point in time. K.N. Smirnov’s surviving letters, just like their fragments, give us an idea of the military/political situation along the line of contact with the enemy on the Caucasian front, as well as many aspects of the activity of officers from the Expeditionary Corps of General N.N. Baratov in Iran over the period 1915–1917. Of interest is his characterization of the personal qualities of many Russian officers, such as General N.N. Baratov, the immediate superior of Staff Captain Smirnov, who at the time headed the reconnaissance unit of the Expeditionary Corps, Colonel N.F. Ern, Chief of Staff, and other officers of the corps. The letters also bring to light the character of activity by K.N. Smirnov as a ―political officer‖. K.N. Smirnov’s letters contain extremely rare information on the episode of short-term Anglo-Russian military cooperation on the Caucasian front intended to coordinate actions against Turkish troops in Mesopotamia.
Kurtz, S.E.; Fields, D.E.
1983-10-01
This report describes a version of the TERPED/P computer code that is very useful for small data sets. A new algorithm for determining the Kolmogorov-Smirnov (KS) statistics is used to extend program applicability. The TERPED/P code facilitates the analysis of experimental data and assists the user in determining its probability distribution function. Graphical and numerical tests are performed interactively in accordance with the user's assumption of normally or log-normally distributed data. Statistical analysis options include computation of the chi-square statistic and the KS one-sample test statistic and the corresponding significance levels. Cumulative probability plots of the user's data are generated either via a local graphics terminal, a local line printer or character-oriented terminal, or a remote high-resolution graphics device such as the FR80 film plotter or the Calcomp paper plotter. Several useful computer methodologies suffer from limitations of their implementations of the KS nonparametric test. This test is one of the more powerful analysis tools for examining the validity of an assumption about the probability distribution of a set of data. KS algorithms are found in other analysis codes, including the Statistical Analysis Subroutine (SAS) package and earlier versions of TERPED. The inability of these algorithms to generate significance levels for sample sizes less than 50 has limited their usefulness. The release of the TERPED code described herein contains algorithms to allow computation of the KS statistic and significance level for data sets of, if the user wishes, as few as three points. Values computed for the KS statistic are within 3% of the correct value for all data set sizes.
Narva "istutati" pulmapuu / Ilja Smirnov
Smirnov, Ilja
2008-01-01
Narva linnuse lähistele paigaldati Rashid Shamsutdinovi sepistatud pulmapuu. Selle metallokste külge saab noorpaar pulmapäeval kinnitada sepistatud lehekese, millele on graveeritud abiellujate nimed
Avtor listovok "Hail Stalnuhhin" opravdan / Kirill Smirnov
Smirnov, Kirill
2007-01-01
2005. aasta kohalike valimiste eel süüdistati Narva volikogu saadikut Gennadi Afanasjevit poliitilist vaenu õhutavate lendlehtede levitamises. Viru maakohtu otsusest ja Riigikogu liikme Mihhail Stalnuhhini arvamusest
Narva juhte kutsuti Zhirinovskiga kohtuma / Ilja Smirnov
Smirnov, Ilja
2003-01-01
Ilmunud ka: Severnoje Poberezhje 24. okt. lk. 1, Narvskaja Nedelja 25. okt. lk. 5. Venemaa Liberaaldemokraatliku Partei juhi Vladimir Zhirinovski kohtumisest valijatega Ivangorodis, kuhu said nimelised kutsed ka Narva linnajuhid. Vladimir Zhirinovski katsest külastada Eestit 1992. aastal
Kümned eestimaalased teenivad Vene armees / Ilja Smirnov
Smirnov, Ilja
2004-01-01
Ilmunud ka: Severnoje Poberezhje, 10. nov. 2004, lk. 1; Postimees, 10. nov. 2004, lk. 5; Narvskaja Nedelja, 13. nov. 2004, lk. 4. Ajal. Postimees, lüh. Mitukümmend eestlast on teeninud Vene armees ja õppinud riigi sõjakoolides. Lisa: Vene armees teenija õigused
Narva silla tulevikku arutati koos Moskva ametnikega / Ilja Smirnov
Smirnov, Ilja
2006-01-01
Ilmunud ka: Severnoje Poberezhje 27. jaan. lk. 4, Narvskaja Nedelja 28. jaan. lk. 2. Narvas toimus Eesti-Vene ühise töögrupi esimene kokkusaamine, järgmine kohtumine uue silla asjus peaks toimuma naaberriigis 2006. aasta teises kvartalis
Chopini-konkurss jõudis internetti / Ilja Smirnov
Smirnov, Ilja
2010-01-01
Proua Evelin Ilvese tervituskõnest 31. jaanuaril 2010. a. Narva linnuse Rüütlisaalis VIII rahvusvahelise Chopini-nimelise Noorte Pianistide Konkursi avamisel. Juuresoleval fotol presidendi abikaasa koos Narva linnapea Tarmo Tammistega
Narva silla tulevikku arutati koos Moskva ametnikega / Ilja Smirnov
Smirnov, Ilja
2006-01-01
Ilmunud ka: Severnoje Poberezhje 27. jaan. lk. 4, Narvskaja Nedelja 28. jaan. lk. 2. Narvas toimus Eesti-Vene ühise töögrupi esimene kokkusaamine, järgmine kohtumine uue silla asjus peaks toimuma naaberriigis 2006. aasta teises kvartalis
Narva planirujet ustanovit pamjatnik Petru Pervomu / Ilja Smirnov
Smirnov, Ilja
2003-01-01
Peeter I ausamba võimalikust püstitamisest Narva ja kahest Peetrile pühendatud mälestusmärgist-obeliskist Narvas (püstitatud 1874 ja 1903) ning nende saatusest. Sellekohast lõplikku otsust oodatakse riigivõmudelt
Narvas näidatakse filme Tšetšeenia sõjast / Ilja Smirnov
Smirnov, Ilja
2004-01-01
Narvas toimub rahvusvaheline dokumentaalfilmide festival "Tšetšeenia", kuhu kavatsetakse kutsuda ka Riigikogu liige Andres Herkel. A. Herkeli sõnul pole küll praeguses Riigikogus Tšetšeenia probleemide tundmaõppimisega tegelevat rühma, kuid sellest ei tasu järeldada, nagu ei huvitaks selles piirkonnas toimuv Eesti parlamendiliikmeid
Kreenholm kavatseb osta pankrotti läinud konkurendi seadmed / Ilja Smirnov
Smirnov, Ilja
2007-01-01
Ilmunud ka: Severnoje Poberezhje, 12. jaan. 2007, lk. 4; Narvskaja Nedelja, 13. jaan. 2007, lk. 3. Tekstiiliettevõte Kreenholm kavatseb osta eelmisel aastal suletud viimistlusettevõtte Polytex.ee.Printing seadmed
Moskva ärimehed müüvad Narva ettevõtte / Ilja Smirnov
Smirnov, Ilja
2006-01-01
Ilmunud ka: Severnoje Poberezhje 18. aug. lk. 4. Moskva omanikele kuuluva ja kangaste viimistlemisega tegeleva Narva ettevõtte, AS-i Polytex.ee.Printing töö on täielikult peatatud ning algab massiline koondamine
Narvski "Ulitshnõi balet" tantsujet lutshshe vsehh v Estonii / Ilja Smirnov
Smirnov, Ilja
2001-01-01
15 aastat tagasi Narvas alustanud ja nüüd Tallinnas kolmandat aastat tegutsev kuueliikmeline tantsutrupp. Trupi kunstiline juht on Juri Kuvaltsev, kes hakkab ette valmistama uut vahetust - lastetruppi Vogue
BFKL Pomeron and Bern-Dixon-Smirnov amplitudes in N=4 SUSY
Lipatov, L.N. [Petersburg Nuclear Physics Institute (Russian Federation)]|[Hamburg Univ. (Germany). 2. Inst. fuer Theoretische Physik
2008-10-15
We review the theoretical approaches for investigations of the high energy hadron-hadron scattering in the Regge kinematics. It is demonstrated, that the gluon in QCD is reggeized and the Pomeron is a composite state of the reggeized gluons. Remarkable properties of the BFKL equation for the Pomeron wave function in QCD and supersymmetric gauge theories are outlined. Due to the AdS/CFT correspondence the BFKL Pomeron is equivalent to the reggeized graviton in the extended N=4 SUSY. The properties of the maximal transcendentality and integrability are realized in this model. The BDS multi-gluon scattering amplitudes are investigated in the Regge limit. They do not contain the Mandelstam cuts and are not valid beyond one loop. It is shown, that the hamiltonian for these composite states coincides with the hamiltonian of an integrable open Heisenberg spin chain. (orig.)
Venemaa ja Eesti ei jõudnud Narva silla suhtes kokkuleppele / Ilja Smirnov
Smirnov, Ilja
2007-01-01
Ilmunud ka: Severnoje Poberezhje, 23. mai 2007, lk. 1; Narvskaja Nedelja, 26. mai 2007, lk. 3. Eesti majandusministeeriumi ja Venemaa transpordiministeeriumi esindajad kohtusid Ivangorodis, et arutada Narva silla koormuspiirangute teemat
Venemaa firma hakkab uuendama Narva Elektrijaama tuhaärastussüsteemi / Ilja Smirnov
Smirnov, Ilja
2006-01-01
Ilmunud ka: Severnoje Poberezhje 1. juuli lk. 3. Eesti Elektrijaamas toimus pidulik nurgakivi paigaldamine, millega tähistati tuhaärastussüsteemi pilootseadme ehitustööde algust. Vene firma Engineering Centre of Urals Energetic peadirektor Arkadi Jegorov ehitatavast pilootseadmest
Tables of Significance Points for the Variance-Weighted Kolmogorov-Smirnov Statistics.
1981-02-19
99999? 7 .9242 .9503 2.065590 / . 9872 .9965 2 . 696 95 ’ 13 7 .81965 . 9313 1.901588 H . 9313 .9596 2.1.84653 7 .9814 .9944 2. 561,731 6 8 6 .8555...linear operators P -+ P only, and omit the word "linear" in the sequel. For all a K the shift operator is denoted by Ea : p(x) - p(x+a). An operator Q...invariance follows: If (s n ) is an Sheffer sequence for Q with roots in v, then ( Eas ) is a Sheffer n sequence for Q with roots in v-a. Deeper than all the
Narvski "Ulitshnõi balet" tantsujet lutshshe vsehh v Estonii / Ilja Smirnov
Smirnov, Ilja
2001-01-01
15 aastat tagasi Narvas alustanud ja nüüd Tallinnas kolmandat aastat tegutsev kuueliikmeline tantsutrupp. Trupi kunstiline juht on Juri Kuvaltsev, kes hakkab ette valmistama uut vahetust - lastetruppi Vogue
"Ironija sudbõ" zavlekla v kino novogo zritelja / Ilja Smirnov
Smirnov, Ilja
2008-01-01
Kunagisele Eldar Rjazanovi kultusfilmile "Saatuse iroonia ehk Hüva leili!" (1975) valminud järg "Saatuse iroonia : lugu läheb edasi", režissöör Timur Bekmambetov. Filmilevist Eestis, eelkõige Narva kinos Forum Cinemas Astri
Smirnov, Ilja
2007-01-01
Narva linna Kaubandus-Tööstuskoda alustas ѕauhindadeؤ väljaandmist kõige parema ja kõige halvema teo sooritanud Narva ärimehele. ѕParima teo tegijale antakse skulptor Aivar Simsoni poolt valmistatud pronkskuju ѕLendav Kalevipoegؤ ja halvima teo tegijale jääb ѕSittuv koerؤ
Narva elektrijaamade renoveerimisfirma vabaneb ligi 300 töötajast / Ilja Smirnov
Smirnov, Ilja
2004-01-01
Ilmunud ka: Severnoje Poberezhje, 7. juuli 2004, lk. 4; Narvskaja Nedelja, 10. juuli 2004, lk. 2. Kapitaalremonditööde vähenemise tõttu Narva Elektrijaamades koondab remondifirma Alstom Eesti 275 töötajat. Kommentaarid energeetikute ametiühingu juhilt Vladimir Aleksejevilt
Narva piirkonnast võiks saada Läänemere Las Vegas / Ilja Smirnov
Smirnov, Ilja
2008-01-01
Ilmunud ka: Narvskaja Nedelja 31. mai lk. 5. OÜ Investment Agency projektijuht Teet Kuusmik tõstatas Ida-Virumaa arengukonverentsil mõtte, et Narvast ja Narva-Jõesuust võiks saada USA-s Nevada kõrbes asuva Las Vegasega sarnanev turismimeka
Venemaa firma hakkab uuendama Narva Elektrijaama tuhaärastussüsteemi / Ilja Smirnov
Smirnov, Ilja
2006-01-01
Ilmunud ka: Severnoje Poberezhje 1. juuli lk. 3. Eesti Elektrijaamas toimus pidulik nurgakivi paigaldamine, millega tähistati tuhaärastussüsteemi pilootseadme ehitustööde algust. Vene firma Engineering Centre of Urals Energetic peadirektor Arkadi Jegorov ehitatavast pilootseadmest
Kreenholm kavatseb osta pankrotti läinud konkurendi seadmed / Ilja Smirnov
Smirnov, Ilja
2007-01-01
Ilmunud ka: Severnoje Poberezhje, 12. jaan. 2007, lk. 4; Narvskaja Nedelja, 13. jaan. 2007, lk. 3. Tekstiiliettevõte Kreenholm kavatseb osta eelmisel aastal suletud viimistlusettevõtte Polytex.ee.Printing seadmed
Moskva ärimehed müüvad Narva ettevõtte / Ilja Smirnov
Smirnov, Ilja
2006-01-01
Ilmunud ka: Severnoje Poberezhje 18. aug. lk. 4. Moskva omanikele kuuluva ja kangaste viimistlemisega tegeleva Narva ettevõtte, AS-i Polytex.ee.Printing töö on täielikult peatatud ning algab massiline koondamine
Noor sulemees fabritseeris usutlusi maailmakuulsustega / Priit Pullerits ; tõlk. S. Smirnov
Pullerits, Priit, 1965-
2003-01-01
Vt. ka Infopress 12. sept., lk. 134. Argo Riistan avaldas kolme aasta jooksul Eesti ajalehtede kultuurilisades kümmekond kirjutist maailma tuntud kirjanike ja mõtlejatega, millest enamik osutus väljamõeldud usutlusteks
Venemaa ja Eesti ei jõudnud Narva silla suhtes kokkuleppele / Ilja Smirnov
Smirnov, Ilja
2007-01-01
Ilmunud ka: Severnoje Poberezhje, 23. mai 2007, lk. 1; Narvskaja Nedelja, 26. mai 2007, lk. 3. Eesti majandusministeeriumi ja Venemaa transpordiministeeriumi esindajad kohtusid Ivangorodis, et arutada Narva silla koormuspiirangute teemat
Rak izletshim u 80 iz 100 zabolevshihh detei / Lev Durnov ; interv. Kim Smirnov
Durnov, Lev
1999-01-01
Intervjuu Venemaa N. Blohhini nimelise Onkoloogia Teadusliku Keskuse peadirektori asetäitja Lev Durnoviga keskuseLaste Onkoloogia ja Hematoloogia Teadusliku Uurimise Instituudi tööst laste vähktõve ravimisel
Narva elektrijaamades enam püstoliga ei paugutata / Ilja Smirnov
Smirnov, Ilja
2004-01-01
Ilmunud ka: Severnoje Poberezhje, 7. okt. 2004, lk. 1. Narva elektrijaamades töötav õlitehas ostis Hollandi firmas Smitsvon Holland B.V. toodetud kõrgtehnoloogilise süsteemi, mis garanteerib töökindluse ja suudab sädeme tekitada isegi vees või geelis
Narva energeetikud nõuavad suurt palgatõusu / Ilja Smirnov
Smirnov, Ilja
2007-01-01
Ilmunud ka: Severnoje Poberezhje, 19. apr. 2007, lk. 1. Narva energeetikud nõuavad jätkuvalt 40%-list palgatõusu. Ametiühing hoiatas elektrijaamade administratsiooni, et algab kogenud spetsialistide lahkumine, mis ähvardab kaasa tuua töökatkestusi ja avariisid
Kuidas ehitajatest kaevurid said / Mati Jostov ; tõlk. S. Smirnov
Jostov, Mati
2003-01-01
Ilmunud ka: Infopress 7. veebruar nr. 6 lk. 144. AS Eesti Põlevkivi juhatuse esimees analüüsib AS Merko Ehituse tütarfirma Merko Kaevanduste investeeringuid, mis ei ole piisavad kaevanduse rajamiseks. Advokaatide siseinfo kasutamisest. Maa hinnast
Rak izletshim u 80 iz 100 zabolevshihh detei / Lev Durnov ; interv. Kim Smirnov
Durnov, Lev
1999-01-01
Intervjuu Venemaa N. Blohhini nimelise Onkoloogia Teadusliku Keskuse peadirektori asetäitja Lev Durnoviga keskuseLaste Onkoloogia ja Hematoloogia Teadusliku Uurimise Instituudi tööst laste vähktõve ravimisel
Narva energeetikud nõuavad suurt palgatõusu / Ilja Smirnov
Smirnov, Ilja
2007-01-01
Ilmunud ka: Severnoje Poberezhje, 19. apr. 2007, lk. 1. Narva energeetikud nõuavad jätkuvalt 40%-list palgatõusu. Ametiühing hoiatas elektrijaamade administratsiooni, et algab kogenud spetsialistide lahkumine, mis ähvardab kaasa tuua töökatkestusi ja avariisid
X-ray diagnosis of mutilating arthritis in patients with psoriatic arthritis Smirnov A.V.
A.V. Smirnov
2014-01-01
Full Text Available The typical X-ray symptoms of psoriatic arthritis (PsA in joints of hands and distal sections of feet (asymmetric lesions; isolated lesion of distal interphalangeal joints (DIJ of hands with no changes in other small joints of hands; axial lesion of three joints in a single finger; transverse lesion of joints of the hand at the same level; destruction of distal phalanges; narrowing of the distal epiphysis of hand finger phalanges and metacarpal bones; cup-shaped deformity of the proximal portion of hand finger phalanges and narrowing of distal epiphysis; osseous ankyloses; multiple osteolytic lesions and destruction of bone epiphysis and joint deformities; inflammatory changes in the sacroiliac joints; and typical degenerative changes in the spine are described. It is especially important to know X-ray manifestations of PsA when there are no typical cutaneous manifestations of psoriasis.
Smirnov, Ilja
2007-01-01
Narva linna Kaubandus-Tööstuskoda alustas ѕauhindadeؤ väljaandmist kõige parema ja kõige halvema teo sooritanud Narva ärimehele. ѕParima teo tegijale antakse skulptor Aivar Simsoni poolt valmistatud pronkskuju ѕLendav Kalevipoegؤ ja halvima teo tegijale jääb ѕSittuv koerؤ
Georgi Ignatov : "Narva arengu juhtimine pole rutiinne töö" / Georgi Ignatov ; interv. Ilja Smirnov
Ignatov, Georgi
2008-01-01
Ilmunud ka: Narvskaja Nedelja 7. juuni lk. 5. Severnoje Poberezhje : Subbota 24. mai, lk. 3. Linnaarenduse ja ökonoomika ameti direktor Narva arengust, projektidest, lõppenud Ida-Virumaa arengukonverentsist, ettevõtlusest. Lisa: CV. Ajal. Severnoje Poberezhje : Subbota ka Narva linnavolikogu esimehe Mihhail Stalnuhhini kommentaar
Fenchel, Tom
2010-01-01
The polymorphic life history of the marine naked amoeba Flabellula baltica was studied. It can be interpreted in terms of adaptations to an environment that is patchy in time and space and it represents trade-off between longevity during starvation and the ability to initiate multiplication soon...... after food resource become available. The life history also represents bet hedging in that different cells within a clonal culture may respond in different ways when food is depleted....
2016-12-01
Matlab Simulation Code ................................................................................ 15 Appendix D: VBA Code for AD and KS Tests...technique used to determine how well a statistical model fits a data set. Single-sample GoF tests consider a null and an alternative hypothesis to...is in Appendix C. VBA code capable of running the AD and KS tests is in Appendix D. All AD test simulations use an identical sample size for each
1985-12-01
tion in statistical analysis. It is named after Vilfredo Pareto (1848-1923), a Swiss professor of economics who con- ducted the first extensive...THE PARETO DISTRIBUTION WITH UNKNOWN LOCATION AND SCALE PARAMETERS THESIS James E. Porter III Captain, USAF AFIT/GSO/MA/85D-6 Approved for public... PARETO DISTRIBUTION WITH UNKNOWN LOCATION AND SCALE PARAMETERS -.- THES IS Presented to the Faculty of the School of Engineering *- of the Air Force
1982-12-01
drar.n frot.,. a jz ta~ulCo w’iiosa shalpe is siec if ied. T I Ie location an( scale .,roi:.cters are Lasti.-ia- teJ , fromi the data, an, t;.:- ti 6 rec...1 Ii cat ions. New York: Holt, iMnehart, and lhinston, Inc., 1973. 6. Lhil lot, 3. and C. Singh . Engineering 1,elability Now Toce iLO, and
Manuel Elías-Gutiérrez
2008-03-01
Full Text Available DNA barcoding, based in the sequence of a gene from the mitochondria, the Citochrome C oxidase (CO1, has been proved to be an excellent tool to identify many animal groups from invertebrates to vertebrates. After barcode several Cladocera, we gathered evidence about the existence of two Leberis species in the north of Mexico. Minimal CO1 divergence between both taxa was 14.3%, due to the GC% in the third codon position. A detailed morphological analyses uncovered one of the species as L. davidi, dwelling from South America to Mexico and the other as Leberis chihuahuensis new species, apparently restricted to semi-desert temporary pools. The parthenogenetic female of the latter is characterized by a small size, blunt rostrum, long and curved spine in the first exopodal segment of the second antenna, absence of accessory seta and sensilla in the first thoracic limb, and a brush-shaped seta in the fourth limb, among other characters. Males have a long and narrow postabdomen and a series of similar sized spinules in the posterior margin of the valves. By the first time a cladoceran is described from both views, the morphology and CO1 sequence.Recientemente una técnica molecular denominada códigos de barras, basada en secuenciar una fracción del gen mitocondrial que codifica para la citocromo oxidasa C (conocido también como CO1 ha demostrado ser una excelente herramienta para identificar especies animales, desde invertebrados hasta vertebrados. Al aplicar esta técnica a cladóceros de agua dulce de diversos lugares, se obtuvo evidencia de la presencia de dos especies del género Leberis en el norte de México. La mínima divergencia en el CO1 entre ambos taxa fue de 14.3%, debida principalmente al contenido de Guanina-Citosina en la posición del tercer codon. El análisis detallado de las estructuras anatómicas de ambas especies permitió identificar a una de ellas como L. davidi, distribuida desde Sudamérica hasta México y la otra corresponde a L. chihuahuensis sp. nov., aparentemente restringida a charcos temporales de regiones semidesérticas. En esta última, la hembra partenogenética se caracteriza por su talla pequeña, el rostro redondeado, la forma y longitud de la espina del primer segmento exopodal de la segunda antena, la ausencia de setas accesorias y sensilas en el lóbulo distal externo del primer apéndice torácico y la presencia de una seta con forma de brocha en el cuarto apéndice torácico, entre otras características. El macho posee un postabdomen largo y angosto, y una serie de espinas de igual tamaño en el margen posterior de las valvas. En este trabajo se conjunta por primera vez la descripción morfológica detallada con la secuencia del CO1 para describir una nueva especie de este grupo.
2007-11-02
extreme situations, and good coordination and harmonization of the required special services. Another important goal is to conduct effective technical...Committee for Cinematography 16 KATUSHEV, Konstantin Fedorovich 17 Minister of Foreign Economic Relations 17 KIRICHENKO, Vadim Nikitovich 18...MIKHALCHENKO, Aleksandr Ivanovich 30 Minister of Installation and Special Construction Work 30 MOSTOVOY, Pavel Ivanovich 31 Deputy Chairman of
2007-11-02
innermost spiritual layer of Milosevic one must be familiar with the teachings of the Russian prophet Nikolay Fedorovich Fedorov, who was revered by Leo ... Tolstoy , who otherwise revered no one, and by F. M. Dostoyevskiy, father of the idea of Orthodox socialism. Fedorov believed that genetic information
A Unified Approach to Constructing Nonparametric Rank Tests.
1986-07-06
82177 - , % 2- W -T- . ,o.. .o I" Va - , . - ,.-- tic, the Kolmogorov-Smirnov statistic, and the Wald - Wolfowitz statistic for the two-sample...linear, such as the Kolmogorov-Smirnov test, the Wald - Wolfowitz (1940) "runs test", the so-called "tests based on exceeding observations" (H;jek 32...metric U induces the Kolmogorov-Smirnov test statistic, for equal sample sizes. The following result shows that the Wald - Wolfowitz test statistic is also
Kern, A. N.; Kulakov, E.; Smirnov, A. V.; Diehl, J. F.; Chamberlain, K.
2012-12-01
The ≈1.1 Ga alkaline intrusive Coldwell Complex (Ontario, Canada) is a part of the Mid-Continental Rift system (MCRS) and is thought to be emplaced in three distinct magmatic episodes (e.g., Currie, Geological Survey of Canada Bulletin, 287, 43pp, 1980). The complex is one of two MCRS rock suites that presumably record multiple geomagnetic reversals. In a prior paleomagnetic study, Lewchuk and Symons (Tectonophysics, 184, 73-86, 1990) reported that rocks representing episodes I (the earliest) and III are reversely (R) magnetized but their mean directions are significantly different. Rocks of the western side of the complex representing episode II yielded normal (N) magnetizations with the mean direction passing a reversal test with respect to both R directions. Here we report new paleomagnetic results from the Coldwell Complex based on a more extensive dataset and modern experimental techniques. We have collected core samples from 42 sites along the Trans-Canadian Highway 17 (six to ten cores per site), including all the sites previously studied by Lewchuk and Symons (1990). Additionally, we have sampled 11 sites off the highway, north of Marathon and near Middleton. Characteristic remanent magnetizations (ChRM) have been isolated by thermal and alternating field demagnetization, and the site-mean paleomagnetic directions have been categorized according to the existing three episode model of magmatism. In contrast to Lewchuk and Symons (1990), we have found that the mean directions for episodes I (D=114.4°, I=-67.1°, α95=4.9°, K=65.7, N=13) and III (D=108.5°, I=-62.9°, α95=5.2°, K=51.4, N=16) are statistically indistinguishable at 95 percent confidence using the reversal test (classification B) of McFadden (GJI, 103, 725-729, 1990). The normal polarity mean direction of episode II (D=299.7°, I=61.8°, α95=3.8°, K=162.1, N=9) is antipodal to the directions of episodes I and III taken separately (classification B), as well as to the mean direction calculated from all reversely magnetized sites combined (classification A). These results may indicate that the reversal asymmetry seen in some MCRS rocks is not a result of an unusual long-standing non-dipole field. Our observations suggest that the three-episode emplacement model may need to be reconsidered. For example, the rocks of episodes I and III may represent a single magmatic event, or two magmatic pulses separated by a very brief time interval. The robustness of our interpretations, however, ultimately depends on precise radiometric dating of the Coldwell Complex rocks representing different magmatic episodes. Along with our paleomagnetic study, high-precision U-Pb zircon dating is in progress, with anticipated precisions of ±0.02%.
Cluster processes in gases and plasmas
Smirnov, Boris M
2009-01-01
Boris M. Smirnov received his Ph.D. in physics from Leningrad State University in 1968. After working in different research positions, he finally accepted a post as head of one of the divisions of the Institute for High Temperatures at the Russian Academy of Sciences in Moscow in 1986. Professor Smirnov is the author and co-author of approximately 50 books as well as 400 research articles in plasma physics, atomic physics, and atomic clusters. He is Vice Chairman of the National Council for Low Temperature Plasma and Chairman ofa Section on Elementary Processes in Plasma. Professor Smirnov`s r
"Artek" v serdtse Tallinna / Irina Butjajeva
Butjajeva, Irina
2007-01-01
Tallinna Vene kultuurikeskuse laste kunstistuudiost "Artec" ning selle õpilaste tööde näitustest Vene kultuurikeskuse galeriides. Kunstistuudio "Artec" tekkis kunstistuudiote "Valeris" (Valeri Smirnov) ja "5+5" (Valeri Laur) ühinemisel. Maalistuudiot juhatab Valeri Laur ja graafikastuudiot Valeri Smirnov
V. Y. Medianyk
2016-06-01
Full Text Available This paper focuses on one aspect of the economic history of Ukraine at the end of XIX – the beginning XX century. The stages of entrepreneurial activity of brightest representative of the business world of the South Ukraine Nikolai Fedorovich von Ditmar are namely investigated. The factors which facilitated on the attracting of N. F. von Ditmar to business entourage were should be called the rapid development of industry and support the engineering business by Vitte’s government. It has significantly contributed to an active inflow of technical personnel into branch of trade and industry. Following research methods were used to achieve the scientific purpose. Among them: 1 historicalgenetic method (it makes it possible to analyze the evolution of N. F. von Ditmar business; 2 historicalcomparative method allows you to draw parallels between Ditmar’s plant and other industrial enterprises of Kharkov province; 3 prosopography method helps to explore the socioeconomic history of Ukraine through the prism of von Ditmar’ business. During research process, we identified three stages of von Ditmar’s private enterprise such as I (1893–1904, II (1904–1914, III (1914–1917. The first period of Ditmar’s business is characterized by foundation in Kharkov small technical company, which was closely connected with his scientific and practical activity in geology. The specialization of Ditmar’s company was associated with the geological fieldwork and water supply. For example, technical office engaged in drilling wells of railway stations and cities. At the same time, the mechanical workshop produced tool for these works. The achievement of a mining engineer in this period was the use of mechanical equipment instead of manual. In the second stage of von Ditmar’s business there were organizational transformation, which resulted in the creation of the “Kharkov N. F. von Ditmar’s Metal Plant”. At this time, the company took the
2007-01-01
Narvalastest, kes pälvisid presidendilt riikliku teenetemärgi - Kreenholmi tekstiilitööstuse arendajad Nadežda Sinjakova ja Konstantin Gorlov ning massirepressioonide uurija, liikumise Memento aktivist Jevgeni Smirnov
Continuous Wave 30 W Laser-Diode Bar with 10 Ghz Linewidth for Rb Laser Pumping (Postprint)
2009-09-15
Niigaki, H. Kubomura, T. Hiruma, and H. Kan, Appl. Phys. Lett. 88, 141112 (2006). 14. O. M. Efimov , L. B. Glebov, L. N. Glebova, and V. I. Smirnov, U.S...patent 6,586,141 (July 1, 2003). 15. O. M. Efimov , L. B. Glebov, and V. Smirnov, U.S. patent 6,673,497 (January 6, 2004). 16. L. B. Glebov, Proc
Continuous wave, 30 W Laser-Diode Bar with 10 GHz Linewidth for Rb Laser Pumping
2008-01-01
Miyajima, H. Fukuoka, S. Matsuoka, M. Niigaki, H. Kubomura, T. Hiruma, and H. Kan, Appl. Phys. Lett. 88, 141112 (2006). 14. O. M. Efimov , L. B. Glebov, L...N. Glebova, and V. I. Smirnov, U.S. patent 6,586,141 (July 1, 2003). 15. O. M. Efimov , L. B. Glebov, and V. Smirnov, U.S. patent 6,673,497 (January 6
Chirskii, V. G.
2017-04-01
The present paper is a survey of a part of the theory devoted to certain problems concerning the algebraic independence of the values of analytic functions, to quantitative results on estimates for the measure of transcendence or the measure of algebraic independence of numbers, to functional analogs of these results on the algebraic independence of solutions of algebraic differential equations, and estimates for the multiplicities of zeros for polynomials in these solutions, which play an important role in the proof of numerical results. This choice is related to the fact that, in December 2016, the head of the Department of Number Theory of Moscow State University, Corresponding Member of the RAS Yu.V. Nesterenko, who did a lot to develop these directions of the theory Transcendental numbers and whose works are marked by many awards, became seventy. He is a laureate of the Markov RAS Prize, 2006, of the Ostrovsky international prize, 1997, of the Hardy-Ramanujan Society Prize, 1997, and the Alexander von Humboldt Prize, 2003. Since the article is dedicated to the 70th anniversary of the birth of Yurii Valentinovich, we preface the scientific part with a brief biography.
Noise as a Boolean algebra of sigma-fields
Tsirelson, Boris
2011-01-01
The black noise of two-dimensional percolation, disclosed recently by O. Schramm, S. Smirnov and C. Garban, exceeds the limits of the existing framework based on one-dimensional intervals. A remake of the theory of noises, provided here, treats them as Boolean algebras of sigma-fields. Completeness of the Boolean algebra implies classicality, which answers an old question of J. Feldman.
Embedding universal covers of graph manifolds in products of trees
Hume, David
2011-01-01
We prove that the universal cover of any graph manifold quasi-isometrically embeds into a product of three trees. In particular we show that the Assouad-Nagata dimension of the universal cover of any closed graph manifold is 3, proving a conjecture of Smirnov.
[A priceless contribution to the theory and practice of military public health].
Chizh, I M
1994-09-01
The article is dedicated to the outstanding figure in national medicine--colonel-general MD E.I. Smirnov (1904-1989), the Hero of Socialist Labour, member of the Academy of Medical Sciences of the USSR, who was the Head of the Main Military Sanitary Department of the Red Army during the Great Patriotic war, and the Minister of Health of the USSR in the post-war period. The main attention of the author is drawn on the contribution of E.I. Smirnov to the development of military medicine. The article makes a detailed analysis of the role of E. Smirnov in the development and practical implementation of military medical doctrine and the antiepidemic support system during the years of the Great Patriotic War, as well as his contribution for organizational arrangement of field therapy as an independent scientific discipline and as a subject of study in the system of medical education; his merits in organization of specialized medical care; formation of an institution of senior medical specialists; reforms in military medical education. The article contains many concrete examples which characterize a celebrated personality of E.I. Smirnov and his leadership qualities.
Appropriate Statistical Analysis for Two Independent Groups of Likert-Type Data
Warachan, Boonyasit
2011-01-01
The objective of this research was to determine the robustness and statistical power of three different methods for testing the hypothesis that ordinal samples of five and seven Likert categories come from equal populations. The three methods are the two sample t-test with equal variances, the Mann-Whitney test, and the Kolmogorov-Smirnov test. In…
Category of trees in representation theory of quantum algebras
Moskaliuk, N. M.; Moskaliuk, S. S., E-mail: mss@bitp.kiev.ua [NAS of Ukraine, Bogolyubov Institute for Theoretical Physics (Ukraine)
2013-10-15
New applications of categorical methods are connected with new additional structures on categories. One of such structures in representation theory of quantum algebras, the category of Kuznetsov-Smorodinsky-Vilenkin-Smirnov (KSVS) trees, is constructed, whose objects are finite rooted KSVS trees and morphisms generated by the transition from a KSVS tree to another one.
Cyclic cohomology of Hopf algebras
Crainic, M.
2001-01-01
We give a construction of ConnesMoscovicis cyclic cohomology for any Hopf algebra equipped with a character Furthermore we introduce a noncommutative Weil complex which connects the work of Gelfand and Smirnov with cyclic cohomology We show how the Weil complex arises naturally when looking at Hopf
Cyclic cohomology of Hopf algebras, and a non-commutative Chern-Weil theory
Crainic, M.
2001-01-01
We give a construction of ConnesMoscovicis cyclic cohomology for any Hopf algebra equipped with a character Furthermore we introduce a noncommutative Weil complex which connects the work of Gelfand and Smirnov with cyclic cohomology We show how the Weil complex arises naturally when looking at Hopf
The Quasimetrization Problem in the (Bitopological Spaces
Athanasios Andrikopoulos
2007-01-01
Full Text Available It is our main purpose in this paper to approach the quasi-pseudometrization problem in (bitopological spaces in a way which generalizes all the well-known results on the subject naturally, and which is close to a “Bing-Nagata-Smirnov style” characterization of quasi-pseudometrizability.
Dostojevski bez nakipi / Anna Moleva
Moleva, Anna
2002-01-01
Fjodor Dostojevski romaani "Idioot" järgi filmitud 10-osalise samanimelise Venemaa draamaseriaali valmimisest : režissöör Vladimir Bortko. Oma arvamust avaldavad produtsent Valeri Todorovski, näitlejad Oleg Basilashvili, Vladimir Mashkov, Jevgeni Mironov, Andrei Smirnov, Mihhail Bojarski, Maria Kisseljova, Sasha Lazarev
On Random Correlation Matrices. 2. The Toeplitz Case
1989-03-23
eigenproblem has been raised in an earlier RCM context by Marsaglia and Olkin [15]. 3. NUMERICAL EXPERIENCE In this section we summarize some...Lohrding, "Three Kolmogorov-Smirnov-Type One-Sample Tests with Improved Power Properties," J. Statist. Comput. Simul. 2, 139-148 (1973). 15. G. Marsaglia
A New Detector for Perturbations in Gravitational Field
Smirnov V. N.
2008-04-01
Full Text Available The paper presents design, principles of operation, and examples of registrations carried out by original device developed and constructed by V. N. Smirnov. The device manifested the possibility to register very weak gravitational perturbations of non-seismic kind both from celestial bodies and from the internal processed in the terrestrial globe.
Taxonomic Evaluation of Cleveland Harbor Lake Areas
2014-01-01
studies should include benthic organisms such as microbiota and harvestable shellfish and finfish. Abundance, diversity, and distribution should be...statistical comparisons and determinations of data normality (Kolmogorov-Smirnov test) and homogeneity (Levene’s test) were performed using Sigmastat
Appropriate Statistical Analysis for Two Independent Groups of Likert-Type Data
Warachan, Boonyasit
2011-01-01
The objective of this research was to determine the robustness and statistical power of three different methods for testing the hypothesis that ordinal samples of five and seven Likert categories come from equal populations. The three methods are the two sample t-test with equal variances, the Mann-Whitney test, and the Kolmogorov-Smirnov test. In…
Brzhesky VV
2014-06-01
Full Text Available Vladimir Vsevolodovich Brjesky,1 Yury Fedorovich Maychuk,2 Alexey Vladimirovich Petrayevsky,3 Peter Gerrievich Nagorsky41Department of Ophthalmology, Pediatric State Medical Academy, Saint Petersburg, 2Moscow Research Institute of Eye Diseases, Moscow, 3Department of Ophthalmology, Volgograd State Medical University, Volgograd, 4Novosibirsk Branch of the Federal State Institute MNTK Eye Microsurgery, Novosibirsk, Russian Federation, RussiaAbstract: Artificial tear preparations are important in the management of dry eye syndrome. We present the findings from four recently published studies conducted in Russia assessing Hylabak® (marketed as Hyabak® in Europe, a preservative-free hyaluronic acid preparation, for the treatment of dry eye syndrome. All studies had an open, noncomparative design, but one compared the findings with those from 25 patients treated with Tear Naturale® in previous studies. A total of 134 children and adults were enrolled, and the etiologies of dry eye syndrome included contact lens use, intensive office work, adenovirus eye infection, postmenopausal status, persistent meibomian blepharitis, Sjögren's syndrome, phacoemulsification with intraocular lens implantation, and refractive surgery. The patients were treated with Hylabak for 2 weeks to 2 months. All studies showed that Hylabak resulted in marked improvement as assessed by subjective sensations/complaints, Schirmer's test, Norn’s test, impression cytology and biomicroscopy, staining, and tear osmolarity. Greater benefits were also reported compared with Tear Naturale, including a faster onset of action. Hylabak was well tolerated. In conclusion, Hylabak provided rapid and safe relief from the signs and symptoms of dry eye syndrome, as well as improvement in objective measures, in a wide range of patients.Keywords: dry eye, eye drops, artificial tears, hyaluronic acid, Hylabak®, preservative-free
Academician V.F. Utkin, General Designer of Space Launch Systems
Konyukhov, S.; Novykov, O.
2002-01-01
Academician Vladimir Fedorovich Utkin was an outstanding scientist and designer of rocket and space machinery, Doctor of Technical Science, Professor, Twice Hero of Socialist Labor, Lenin Prize and USSR State Prize winner, bearer of six Orders of Lenin and many other government awards. For 19 years, 1971 - 1990, V. F. Utkin held a position of General Designer in Yuzhnoye SDO having inherited this post from Academician Mikhail Kuzmich Yangel - Yuhnoye's founder. From 1990 till 2000 V. F. Utkin headed Central Scientific Research Institute of Machinery of Russia (TsNIIMash) as its General Designer. Under leadership of V. F. Utkin Yuzhnoye SDO designed several generations of unique strategic missile systems that laid the foundation for Rocket Strategic Forces of the Soviet Union and Russia, subsequently, developed one of the largest high-performance liquid- propellant ICBM SS-18 (Satan), solid-propellant ICBM SS-24 designed for both silo and rail- road deployment, environment friendly Zenit launch vehicle, delivered more than three hundred military, scientific and environmental satellites with tasks. A series of complicated scientific and technical problems has been resolved, a number of unique designing and technological solutions has been implemented in course of development, e.g. separating and orbital warheads, pop-up launch of heavy missiles from a container, continuous and persistent combat duty of liquid-propellant missiles, missile tolerance to nuclear explosion damage, liberation of vessels from ice captivity in the Arctic Ocean using Cosmos-1500 satellite - ancestor of the Ocean satellite constellation designed for accomplishment of seafaring tasks. The existing Russian Program for Rocket and Space Machinery development was designed under leadership of V.F. Utkin.
Coverage of Russian psychological contributions in American psychology textbooks.
Aleksandrova-Howell, Maria; Abramson, Charles I; Craig, David Philip Arthur
2012-01-01
Internationalizing psychology is an important component of current globalization trends. American textbooks on the history of psychology and introductory psychology were surveyed for the presence of historical and contemporary important Russian psychologists to assess the current status of Russian-American crossfertilization. Of a list of 97 important Russian psychologists, as determined by the editors of the Russian journal Methodology and History in Psychology, less than 22% are mentioned in the reviewed texts. The most common names were Pavlov, Luria, and Vygotsky. As the internet is arguably the single most important factor affecting the increase of international communication and dissemination of knowledge, we also searched for these 97 names on various websites, most notably Wikipedia and Google. Forty-one internet sites contained some amount of biographical information about Russian psychologists. On Wikipedia, 14 Russian psychologists had articles documenting biographical information. We also developed a rubric to determine the amount of information available on the internet for these psychologists and compared Wikipedia's mean score with various other websites. Wikipedia pages on average had a significantly higher score than the rest of the internet. Recommendations to improve Russian coverage in America are provided and include: (1) developing pages on Wikipedia and other virtual venues highlighting Russian contributions, (2) soliciting articles for US journals from Russian psychologists, and (3) incorporating Russian contributions in introductory and historical textbooks. We provide a partial bibliography of Russian contributions that can be used by authors of such textbooks. We would like to thank Dr Viktor Fedorovich Petrenko and Dr Igor Nikolaevich Karitsky from the journal Methodology and History of Psychology for supplying the names of the Russian psychologists. We would also like to express our appreciation to Robert García for reviewing and
Dariusz Kołodziejczyk
2015-09-01
Full Text Available The author examines the different ways, by which foreign borrowings were adopted in the Office of the Crimean Khanate. On the one hand, Tatars adopted specimens from the Moscow and Polish-Lithuanian Chancelleries (e.g. pendant seal, on the other hand, they sought to maintain and even restore ancient terminology related to the Genghisid and Central Asian tradition. Baysa with inscription providing certain rights and privileges on behalf of the ruler was used in the Genghisid Empire and ulus of Jochi. The first Crimean Tatar document, where we meet the term baysa, is a Charter of Shert sent by khan Mehmed III Giray to tsar Mikhail Fedorovich Romanov in September 1624. In 1634, Janibek Giray also wrote about the “golden baysa” apparently as a synonym of seal. Until the mid–17th century, mention of baysa occurs only in the text of the Crimean Charters of Shert sent to Moscow. From 1654, charters with a golden baysa was sent to the Polish king as well. A new form of solemn khan’s charters began to change under the influence of the development of office practice in Moscow and Warsaw. In the same period in the khan’s intitulation appears the formula “the great Padishah of Tat ve Tavgach” – new elements related to the Genghisid and ancient Turkic tradition of Central Asia. Consequently, according to the author, the latter change could be associated with the activities of Shahin Giray and his stay in Persia, or this innovation was imported from the Siberian Khanate.
[The history of kidney transplantation].
Hatzinger, M; Stastny, M; Grützmacher, P; Sohn, M
2016-10-01
The history of kidney transplantation is a history of many unsuccessful efforts and setbacks, but also the history of perseverance, pioneering spirit, and steadfast courage. The first successful transplantation of a dog kidney was done by the Austrian Emerich Ullmann (1861-1937) in 1902. The kidney was connected to the carotid artery of the dog and the ureter ended freely. The organ produced urine for a couple of days before it died. In 1909, there were efforts to transplant human kidneys from deceased patients to monkeys and in the following year the first xenotransplantation in humans was completed. Different kinds of donors were tried: dogs, monkeys, goats and lambs, all without success. In 1939, the first transplantation from a deceased human donor was done by the Russion Yurii Voronoy, the patient survived for only a couple of days, and the organ never worked. In 1953, the first temporarily successful transplantation of a human kidney was performed by Jean Hamburger in Paris. A 16-year-old boy received the kidney of his mother as living donor transplantation. Then in 1954, a milestone was made with the first long-term successful kidney transplantation by Joseph Murray: the transplantation was done between monozygotic twins; the organ survived for 8 years. For his efforts in kidney transplantation, Murray was honored with the Nobel Prize in medicine in 1990. In 1962, the first kidney transplantation between genetically nonrelated patients was done using immunosuppression and in 1963 the first kidney transplantation in Germany was done by Reinhard Nagel and Wilhelm Brosig in Berlin. The aim of this article is to present the history of kidney transplantation from the beginning until today.
A semiparametric Wald statistic for testing logistic regression models based on case-control data
2008-01-01
We propose a semiparametric Wald statistic to test the validity of logistic regression models based on case-control data. The test statistic is constructed using a semiparametric ROC curve estimator and a nonparametric ROC curve estimator. The statistic has an asymptotic chi-squared distribution and is an alternative to the Kolmogorov-Smirnov-type statistic proposed by Qin and Zhang in 1997, the chi-squared-type statistic proposed by Zhang in 1999 and the information matrix test statistic proposed by Zhang in 2001. The statistic is easy to compute in the sense that it requires none of the following methods: using a bootstrap method to find its critical values, partitioning the sample data or inverting a high-dimensional matrix. We present some results on simulation and on analysis of two real examples. Moreover, we discuss how to extend our statistic to a family of statistics and how to construct its Kolmogorov-Smirnov counterpart.
DASHA-2: Improving Visualization and Processing of Photometric Data with IDL Objects
Smirnov, Oleg
DASHA-2 is the next iteration of the DASHA package (Smirnov & Ipatov 1995) for processing data produced by the DAOPHOT II PSF photometry software (Stetson 1987, 1992). The original package was implemented under the pcIPS image processing system (Smirnov & Piskunov 1995), whereas DASHA-2 is completely written in IDL. The package is tailored for the reduction of large batches of CCD observations, where the same field is observed at different exposures and in different photometric bands. DASHA-2 is currently in heavy use at the Institute of Astronomy, where it is routinely employed to reduce observations of globular clusters, resulting in photometric data for upwards of 15,000 objects in a single field.
1988-09-01
Smirnov, Wald - Wolfowitz , Mann-Whitney, A Wilcoxson, and Siegel-Tukey tests. The overall univariate statistics are also reproduced with these plots: mean...percentile and quantile plots for each estimator. * Computation of Mean Squared Error ( MSE ), when known values are input. * Bivariate histograms to show...indicating that the estimator is still biased at sample size 100. The mean squared error ( MSE ) is used in this simulation since we know the value of the
Note on four-particle form factors of operators $T_{2n}T_{-2n}$ in sinh-Gordon model
Lashkevich, Michael
2016-01-01
The diagonal matrix elements $\\langle\\theta_1,\\theta_2|T_{2n}T_{-2n}|\\theta_1,\\theta_2\\rangle$ between two-particle states in the sinh-Gordon model are computed analytically for all integers $n>0$. This confirms the proposal by F. Smirnov and A. Zamolodchikov for these matrix elements and demonstrates effectiveness of the algebraic approach to form factors.
Pestman, Wiebe R
2009-01-01
This textbook provides a broad and solid introduction to mathematical statistics, including the classical subjects hypothesis testing, normal regression analysis, and normal analysis of variance. In addition, non-parametric statistics and vectorial statistics are considered, as well as applications of stochastic analysis in modern statistics, e.g., Kolmogorov-Smirnov testing, smoothing techniques, robustness and density estimation. For students with some elementary mathematical background. With many exercises. Prerequisites from measure theory and linear algebra are presented.
Alexandr M. Pashkov
2009-08-01
Full Text Available Author deals with 19th century intellectuals of Olonets Karelian origin who started to be interested in local language, culture and ways of life. They started to compile and publish corresponding texts and it meant the beginning of ethnic mobilization of Karelians. Author starts with a brief overview of local historical background and continues with activities of three intellectuals of Karelian origin (I. V. Kondratyev, M. N. Smirnov, N. F. Leskov.
Approximation of conformal mapping via the Szeg\\H{o} kernel method
Pritsker, Igor E.
2013-01-01
We study the uniform approximation of the canonical conformal mapping, for a Jordan domain onto the unit disk, by polynomials generated from the partial sums of the Szeg\\H{o} kernel expansion. These polynomials converge to the conformal mapping uniformly on the closure of any Smirnov domain. We prove estimates for the rate of such convergence on domains with piecewise analytic boundaries, expressed through the smallest exterior angle at the boundary. Furthermore, we show that the rate of appr...
Implementing a 3D histogram version of the Energy-Test in ROOT
Cohen, E.O., E-mail: cohen.erez7@gmail.com [School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978 (Israel); Reid, I.D., E-mail: ivan.reid@brunel.ac.uk [College of Engineering, Design and Physical Sciences, Brunel University London, Uxbridge UB8 3PH (United Kingdom); Piasetzky, E., E-mail: eip@tauphy.tau.ac.il [School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978 (Israel)
2016-08-21
Comparing simulation and data histograms is of interest in nuclear and particle physics experiments; however, the leading three-dimensional histogram comparison tool available in ROOT, the 3D Kolmogorov–Smirnov test, exhibits shortcomings. Throughout the following, we present and discuss the implementation of an alternative comparison test for three-dimensional histograms, based on the Energy-Test by Aslan and Zech. The software package can be found at (http://www-nuclear.tau.ac.il/ecohen/).
Coherent Beam Combining Element for Five 150-W Fiber Lasers by Volume Bragg Gratings in PTR Glass
2011-08-03
glasses,” Glass Science and Technology 75 C1 (2002) 73-90. 8. O.M. Efimov , L.B. Glebov, V.I. Smirnov, and L.N. Glebova, “Process for production of...high efficiency volume diffractive elements in photo-thermo-refractive glass,” U.S. Patent 6,586,141 (2003). 9. O.M. Efimov , L.B. Glebov, and V.I
Perfeccionismo y nivel de cohesión de grupo de deportistas adultos de fútbol sala
Lenamar Fiorese Vieira; Jos\\u00E9 Roberto Andrade do Nascimento Junior; Jos\\u00E9 Luiz Lopes Vieira
2013-01-01
This study investigated the perfectionism and level of cohesion of indoor soccer teams. The subjects were made of 58 players from a Brazilian professional league. The Group Environment Questionnaire and Multidimensional Perfectionism Scale were used for assessment purposes. The data was analysed using the Kolmogorov-Smirnov test, Cronbach’s alpha, Spearman correlation and Mann-Whitney test (p < .05). The results showed that the players had moderate levels of cohesion and achieved high scores ...
Debrabant, Birgit; Soerensen, Mette
2014-01-01
Abstract We discuss the use of modified Kolmogorov-Smirnov (KS) statistics in the context of gene set analysis and review corresponding null and alternative hypotheses. Especially, we show that, when enhancing the impact of highly significant genes in the calculation of the test statistic...... parameter and the genesis and distribution of the gene-level statistics, and illustrate the effects of differential weighting in a real-life example....
Bibliography of Soviet Laser Developments, Number 79, September - October 1985.
1987-01-01
i spektroskopiya molekulyarnykh sred . IFSOAN. Krasnoyarsk, 1984, 51-61. (RZFZA, 85/10L304). 201. Belyayev, M.V.; Mayorov, A.P.; Smirnov, V.A...optika i spektroskopiya molekulyarnykh sred . IFSOAN. Krasnoyarsk, 1984, 191-214. (RZFZA, 85/10L9 92). *213. Kapeniyeks, A.E.; Kundzin’sh, M.A...molekulyarnykh sred . IFSOAN. Krasnoyarsk, 1984, 40-51. (RZFZA, 85/IOL1016) . 3. Parametric Processes 247. Korniyenko, N.Ye.; Fedorchenko, A.M. (. Effect
Otvlekajas na zhizn / Tatjana Poznjak
Poznjak, Tatjana
2000-01-01
Vene kirjaniku Ivan Bunini (1870-1953) elulõpu armastusloost tehtud filmis "Tema naise päevik" ("Dnevnik jego zhenõ") on Bunini rollis Andrei Smirnov. Näitleja räägib oma suhtest rolliga ning artikli autor avaldab mõtteid kirjaniku elu ja iseloomu üle. Ka ajalehes Vesti : Nedelja pljuss, 15. detsember, lk. 32-33
Endemism in the Cladocera (Crustacea: Branchiopoda) of Southern Africa
2013-01-01
We review the current state of knowledge and patterns of distribution in the endemic Cladocera (Crustacea: Branchiopoda) of Southern Africa and describe two species of the Western Cape, of which one is new to science. Frey (1993), Korovchinsky (2006) and Smirnov (2008) previously suggested that South Africa harbours few endemics in the Cladocera. In the current study, we show that so-called low endemism in this region is mainly attributed to our limited state of knowledge of the local clado...
Hausdorff dimension and biaccessibility for polynomial Julia sets
Meerkamp, Philipp
2011-01-01
We investigate the set of biaccessible points for connected polynomial Julia sets of arbitrary degrees $d\\geq 2$. We prove that the Hausdorff dimension of the set of external angles corresponding to biaccessible points is less than 1, unless the Julia set is an interval. This strengthens theorems of Stanislav Smirnov and Anna Zdunik: they proved that the same set of external angles has zero 1-dimensional measure.
Enterprise Requirements and Acquisition Model (ERAM) Analysis and Extension
2014-02-20
100). Retrieved from http://oai.dtic.mil/oai/oai? verb =getRecord&metadataPrefix=html&identifier=AD A563266 Moorman, R. (2005). Implementing Lean...in Figure 4, provide a comparison of the respective distributions. Both distributions appear to display a bi- modal nature. Actual data appears to...for this bi- modal nature are discussed in the Summary and Recommendations section. Finally, a two-sample Kolmogorov-Smirnov (K-S) test was performed
Võ k nam, a mõ k vam... / Nelli Kuznetsova
Kuznetsova, Nelli
2008-01-01
Vene Kunstnike Ühenduse 10. aastapäevale pühendatud kevadnäitus toimus Würthi galeriis ja Kohtla-Järve Linnagaleriis. Filmi näituste avamistest, eksponeeritud töödest ja aruteludest näidati Vene kultuurikeskuses. Slava Semerikovi, Anatoli Strahhovi ja Valeri Smirnovi maalidest. Vene Kunstnike Ühenduse tegemisi kommenteerib Valeri Smirnov
Ion-Irradiation-Induced Ferromagnetism in Undoped ZnO Thin Films
2013-01-01
Ion-irradiation-induced ferromagnetism in undoped ZnO thin filmsq Siddhartha Mal a,⇑, Sudhakar Nori a, J. Narayan a, J.T. Prater b, D.K. Avasthi c...S, Narayan J, Nori S, Prater JT, Kumar D. Solid State Commun 2010;150:1660. [8] Mal S, Nori S, Jin C, Narayan J, Nellutla S, Smirnov AI, et al. J
Confidence and efficiency scaling in Variational Quantum Monte Carlo calculations
Delyon, François; Holzmann, Markus
2016-01-01
Based on the central limit theorem, we discuss the problem of evaluation of the statistical error of Monte Carlo calculations using a time discretized diffusion process. We present a robust and practical method to determine the effective variance of general observables and show how to verify the equilibrium hypothesis by the Kolmogorov-Smirnov test. We then derive scaling laws of the efficiency illustrated by Variational Monte Carlo calculations on the two dimensional electron gas.
Confidence and efficiency scaling in variational quantum Monte Carlo calculations
Delyon, F.; Bernu, B.; Holzmann, Markus
2017-02-01
Based on the central limit theorem, we discuss the problem of evaluation of the statistical error of Monte Carlo calculations using a time-discretized diffusion process. We present a robust and practical method to determine the effective variance of general observables and show how to verify the equilibrium hypothesis by the Kolmogorov-Smirnov test. We then derive scaling laws of the efficiency illustrated by variational Monte Carlo calculations on the two-dimensional electron gas.
GOODNESS-OF-FIT TEST ON TWO SAMPLES
WANG Lixin; YANG Zhenhai; PANG Wankai
2000-01-01
In this paper, a new statistics for testing two samples coming from the same population is derived from a simple linear model with an artificial parameter. Its limit distribution is a chi-squared distribution with 2 degrees of freedom under null hypothesis and the limit distribution is a noncentral chi-squared distribution with 2 degrees of freedom under certain sequence of alternative hypothesis. Finally, we make power comparison with other tests on two samples, especially, with Smirnov statistics.
NEW METHOD TO ESTIMATE SCALING OF POWER-LAW DEGREE DISTRIBUTION AND HIERARCHICAL NETWORKS
YANG Bo; DUAN Wen-qi; CHEN Zhong
2006-01-01
A new method and corresponding numerical procedure are introduced to estimate scaling exponents of power-law degree distribution and hierarchical clustering func tion for complex networks. This method can overcome the biased and inaccurate faults of graphical linear fitting methods commonly used in current network research. Furthermore, it is verified to have higher goodness-of-fit than graphical methods by comparing the KS (Kolmogorov-Smirnov) test statistics for 10 CNN (Connecting Nearest-Neighbor)networks.
Adaptive Continuous time Markov Chain Approximation Model to\\ud General Jump-Diffusions
Cerrato, Mario; Lo, Chia Chun; Skindilias, Konstantinos
2011-01-01
We propose a non-equidistant Q rate matrix formula and an adaptive numerical algorithm for a continuous time Markov chain to approximate jump-diffusions with affine or non-affine functional specifications. Our approach also accommodates state-dependent jump intensity and jump distribution, a flexibility that is very hard to achieve with other numerical methods. The Kologorov-Smirnov test shows that the proposed Markov chain transition density converges to the one given by the likelihood expan...
Statistical study of the pulse width distribution for radio pulsars
无
2010-01-01
Pulse widths of standard pulse profiles for 262 pulsars were measured by using the Urumqi 25 m radio telescope at 1.54 GHz.For the simplest case of circular emission beam,we applied Monte Carlo simulations to the pulse width distribution.Different density functions of magnetic inclination angle α and observer angle ξ were considered.Using Kolmogorov-Smirnov tests,we derived the most probable distribution for α and ξ.
JPRS Report, Science & Technology, USSR: Materials Science.
2007-11-02
Semiconductor Physics Institute, Siberian Department, USSR Academy of Sciences] [Abstract] An experimental study was made concerning use of binary Bi...begun at the "round table". We are waiting for letters with your opinions and suggestions which, we hope, will help accelerate the solution of the...received 23 Jun 86) pp 516-520 [Article "by B. I. Kosilo, L. I. Polezhayeva, L. P. Polyakova, Ye. G. Polyakov and A. B. Smirnov, Institute of the
Quality of life in the workplace for nursing staff at public healthcare institutions
María Olga Quintana Zavala; Tatiana Paravic Klinj; Katia Lorena Saenz Carrillo
2016-01-01
Abstract Objective: to determine the quality of life in the workplace for nursing staff at public institutions in Hermosillo, Sonora, Mexico. Method: quantitative, correlational, cross-sectional, and comparative. We used a probabilistic sample of 345 nurses with data collected in 2013 using an instrument created by the authors to gather bio-socio-demographic data and the CVT-GOHISALO instrument with a Cronbach's alpha of 0.95. SPSS 15 was used to analyze the data. A Kolmogorov-Smirnov tes...
Abazajian, Kevork N.; Beacom, John F.; Bell, Nicole F.
2002-01-01
We assess a mechanism which can transform neutrino-antineutrino asymmetries between flavors in the early universe, and confirm that such transformation is unavoidable in the near bi-maximal framework emerging for the neutrino mixing matrix. We show that the process is a standard Mikheyev-Smirnov-Wolfenstein flavor transformation dictated by a synchronization of momentum states. We also show that flavor ``equilibration'' is a special feature of maximal mixing, and carefully examine new constra...
ARPANET Routing Algorithm Improvements. Volume 1
1980-08-01
Lcor are the CHISQUARE , EXPONENTIAL, NORMAL and UNIFORM distributions. The parameters belonging to the chi-square (degrees of freedom) and uniform... chisquare > input file: rngchi.out >> degrees of freedom: 999 S-> Size of test .01 )>> kolmogcrov-smirnov critical value -0.23052 >> computed test...statistical procedures. -428 - N4 F4 Report No. 4473 Bolt Beranek and Newman Inc. 10.3.2.2 RANDOM CLASS CHISQUARE (PARAMETER); LONG REAL ARRAY PARAMETER; A
Stochastic Simulation of Progressive Fiber Breaking in Longitudinally Fiber-Reinforced Composites
Wu,Yi
2012-01-01
Statistics has a wide application in science and engineering fields. This research work is aim to study the progressive fiber breaking evolution in the longitudinally reinforced composites from a statistical perspective. First of all, the fiber breaking evolution in a single fiber composite is studied. The Kolmogorov-Smirnov goodness-of-fit test is performed on the experimental data to characterize the damage pattern of the fiber in a single fiber composite. The results indicate that the frag...
Tateno, K; Glass, L
2001-11-01
The paper describes a method for the automatic detection of atrial fibrillation, an abnormal heart rhythm, based on the sequence of intervals between heartbeats. The RR interval is the interbeat interval, and deltaRR is the difference between two successive RR intervals. Standard density histograms of the RR and deltaRR intervals were prepared as templates for atrial fibrillation detection. As the coefficients of variation of the RR and deltaRR intervals were approximately constant during atrial fibrillation, the coefficients of variation in the test data could be compared with the standard coefficients of variation (CV test). Further, the similarities between the density histograms of the test data and the standard density histograms were estimated using the Kolmogorov-Smirnov test. The CV test based on the RR intervals showed a sensitivity of 86.6% and a specificity of 84.3%. The CV test based on the deltaRR intervals showed that the sensitivity and the specificity are both approximately 84%. The Kolmogorov-Smirnov test based on the RR intervals did not improve on the result of the CV test. In contrast, the Kolmogorov-Smirnov test based on the ARR intervals showed a sensitivity of 94.4% and a specificity of 97.2%.
Multifactorial determinants that govern nanoparticle uptake by human endothelial cells under flow
Samuel SP
2012-06-01
Full Text Available Stephen Paul Samuel,1,* Namrata Jain,1,* Frank O’Dowd,2 Toby Paul,2 Dmitry Kashanin,2 Valerie A Gerard,3 Yurii K Gun’ko,3 Adriele Prina-Mello,1,4 Yuri Volkov,1,41Department of Clinical Medicine, Institute of Molecular Medicine, 2Cellix Ltd, Longmile Business Centre, 3School of Chemistry, 4Centre for Research on Adaptive Nanostructures and Nanodevices, Trinity College Dublin, Dublin, Ireland*These authors contributed equally to this workAbstract: Vascular endothelium is a potential target for therapeutic intervention in diverse pathological processes, including inflammation, atherosclerosis, and thrombosis. By virtue of their intravascular topography, endothelial cells are exposed to dynamically changing mechanical forces that are generated by blood flow. In the present study, we investigated the interactions of negatively charged 2.7 nm and 4.7 nm CdTe quantum dots and 50 nm silica particles with cultured endothelial cells under regulated shear stress (SS conditions. Cultured cells within the engineered microfluidic channels were exposed to nanoparticles under static condition or under low, medium, and high SS rates (0.05, 0.1, and 0.5 Pa, respectively. Vascular inflammation and associated endothelial damage were simulated by treatment with tumor necrosis factor-α (TNF-α or by compromising the cell membrane with the use of low Triton X-100 concentration. Our results demonstrate that SS is critical for nanoparticle uptake by endothelial cells. Maximal uptake was registered at the SS rate of 0.05 Pa. By contrast, endothelial exposure to mild detergents or TNF-α treatment had no significant effect on nanoparticle uptake. Atomic force microscopy demonstrated the increased formation of actin-based cytoskeletal structures, including stress fibers and membrane ruffles, which have been associated with nanoparticle endocytosis. In conclusion, the combinatorial effects of SS rates, vascular endothelial conditions, and nanoparticle physical and
Gluon scattering amplitudes at strong coupling
Alday, Luis F. [Institute for Theoretical Physics and Spinoza Institute, Utrecht University, 3508 TD Utrecht (Netherlands); Maldacena, Juan [School of Natural Sciences, Institute for Advanced Study, Princeton, NJ 08540 (United States)
2007-06-15
We describe how to compute planar gluon scattering amplitudes at strong coupling in N = 4 super Yang Mills by using the gauge/string duality. The computation boils down to finding a certain classical string configuration whose boundary conditions are determined by the gluon momenta. The results are infrared divergent. We introduce the gravity version of dimensional regularization to define finite quantities. The leading and subleading IR divergencies are characterized by two functions of the coupling that we compute at strong coupling. We compute also the full finite form for the four point amplitude and we find agreement with a recent ansatz by Bern, Dixon and Smirnov.
1989-12-07
nonparametric Mann-Whitney U-test, the Kolmogorov-Smirnov Two-Sample Test, and the Wald - Wolfowitz Runs Test, the results indicated the analysis-of-variance...X Site 8 X Site 9 X X Site 10 X 3.2.3 Wald - Wolfowitz Runs Test The Wald - Wolfowitz Runs Test was to be used as a nonparametric procedure to evaluate...HAWK DCMCOVX FORTRAN COMMERCIAL & _______ASAS. MSE . EPLRS GAO’ PO-1I ASSEMBLY RuGGEDizED TABLE 1 TEST INSTRUMENTATION REVIEWED BY ARLUT UtherR Tor
Nedorezov, L V
2015-01-01
Analysis of deviations between trajectories of Lotka-Volterra model of competition between two species and G.F. Gause experimental time series on combined cultivation of Paramecium aurelia and Paramecium caudatum shows that with rather big probability there is no correspondence between model and experimental datasets. Testing of sets of deviations was provided on symmetry with. respect to origin (Kolmogorov-Smirnov, Lehmann-Rosenblatt, Wald-Wolfowitz, and Munn-Whitney criterions) and on existence/absence of serial correlation in sequences of residuals (Swed-Eisenhart and "jumps up-jumps down" tests).
Tallinn rekonstrueerib : juhtumid kahe objektiga / Triin Ojari
Ojari, Triin, 1974-
1998-01-01
1960. a. ehitatud hotell Tallinna (arhitektid Peeter Tarvas, Toivo Kallas) ümberehitus hotelliks Grand Mercure Tallinn. Ümberehituse autor - Kalle Rõõmuse arhitektuuribüroo (I. Vainu, A. Kukke, K. Smirnov, T. Pakri). 1939. a. valminud Pirita restorani (Regati baar) ja autobusside lõppjaama hoone (arhitekt Arthur Jürvetson) - Tallinnas ainus säilinud funktsionalistliku rannaarhitektuuri näide - ümberehitus Regati Maja Ärikeskuseks. Ümberehitusprojekt valmis Laansoo Grupis, arhitektid Anne Kose, Andrus Sisask. Kommentaarid Kalle Rõõmus, Andrus Sisask.
Mau Trinh Dang
2013-08-01
Full Text Available We surveyed Thuy Tien lake and Nhu Y river, Thua Thien Hue province, Vietnam, for rotifers from March to August 2010, and additionally in February 2012 in Thuy Tien lake. A total of 98 species-level taxa are identified, belonging to 31 genera and 21 families. Of there, 52 are first records for Vietnam, Filinia minuta (Smirnov, 1928 is new to the Oriental region and Ploesoma asiaticum n. sp. is new to science. These results increase the rotifer record for Vietnam from 122 to 174 taxa. In addition to describing the new taxon, we provide comparative illustrations including trophi scanning electron microscopy photographs of Ploesoma hudsoni (Imhof 1891.
Olesov, A V [G.I. Nevelskoi Maritime State University, Vladivostok (Russian Federation)
2014-10-31
New inequalities are established for analytic functions satisfying Meiman's majorization conditions. Estimates for values of and differential inequalities involving rational trigonometric functions with an integer majorant on an interval of length less than the period and with prescribed poles which are symmetrically positioned relative to the real axis, as well as differential inequalities for trigonometric polynomials in some classes, are given as applications. These results improve several theorems due to Meiman, Genchev, Smirnov and Rusak. Bibliography: 27 titles.
The Use of Geothermal Energy at Military Installations.
1976-10-01
MCSPADDEN UNCLASSIFIED NI. I U I _ U UI U I ________________ E N D DATE c I L M [ o 2—77 p - f~ L, ~2I I~2.5‘ LV u~ ~ IIII~ I _______ OllI~0 IH .8 II1...Geology : Metamerphosed hi~~ lv fractured Franci scanshal e and sands tone . Disoosal : Steam is condensed and reinjected . Noncom- densable gases , pri...Moskva , Izd—vo Nauka , pp. 199-209 , 1970. 90. Mararenko, F. A., B. G. Polyak , and Ya. B. Smirnov. “Trends and Status :1 of Geothermal
GROUP COHESION IN VOLLEYBALL CONTEXT OF THE STATE OF PARANÁ
Nascimento Junior, José Roberto Andrade do; Balbim,Guilherme Moraes; Vieira,Lenamar Fiorese
2013-01-01
Abstract: This descriptive correlational study aimed to analyze the perception of group cohesion of volleyball’s adult teams of state of Paraná. The subjects were 155 athletes male and female. The instruments used were the Group Environment Questionnaire (GEQ). For data analysis we applied the Kolmogorov-Smirnov test, Cronbach’s alpha, Spearman’s correlation, Mann-Whitney and Multiple Regression (p < 0.05). The results showed that teams had good levels of group cohesion and social to the task...
IceCube events and decaying dark matter: hints and constraints
Esmaili, Arman; Serpico, Pasquale Dario
2014-01-01
In the light of the new IceCube data on the (yet unidentified) astrophysical neutrino flux in the PeV and sub-PeV range, we present an update on the status of decaying dark matter interpretation of the events. In particular, we develop further the angular distribution analysis and discuss the perspectives for diagnostics. By performing various statistical tests (maximum likelihood, Kolmogorov-Smirnov and Anderson-Darling tests) we conclude that currently the data show a mild preference (below the two sigma level) for the angular distribution expected from dark matter decay vs. the isotropic distribution foreseen for a conventional $E_\
Nonparametric statistics a step-by-step approach
Corder, Gregory W
2014-01-01
"…a very useful resource for courses in nonparametric statistics in which the emphasis is on applications rather than on theory. It also deserves a place in libraries of all institutions where introductory statistics courses are taught."" -CHOICE This Second Edition presents a practical and understandable approach that enhances and expands the statistical toolset for readers. This book includes: New coverage of the sign test and the Kolmogorov-Smirnov two-sample test in an effort to offer a logical and natural progression to statistical powerSPSS® (Version 21) software and updated screen ca
Determinación del sexo en cráneo y mandíbula en una muestra contemporánea de medellín
2009-01-01
Se estudiaron 21 dimensiones en cráneo y mandíbula para analizar el dimorfi smo sexual en una muestra de población contemporánea de Medellín, utilizando con fi nes comparativos tres métodos diferentes de estima del dimorfi smo sexual. La magnitud de éste, estimada mediante la t de Student proporcionó un número ligeramente mayor de dimensiones dimórficas que el test de Kolmogorov-Smirnov (KS) para muestras independientes. Sin embargo, la t de Student mostró res...
Discrete holomorphicity and integrability in loop models with open boundaries
de Gier, Jan; Rasmussen, Jorgen
2012-01-01
We consider boundary conditions compatible with discrete holomorphicity for the dilute O(n) and C_2^(1) loop models. In each model, for a general set of boundary plaquettes, multiple types of loops can appear. A generalisation of Smirnov's parafermionic observable is therefore required in order to maintain the discrete holomorphicity property in the bulk. We show that there exist natural boundary conditions for this observable which are consistent with integrability, that is to say that, by imposing certain boundary conditions, we obtain a set of linear equations whose solutions also satisfy the corresponding reflection equation. In both loop models, several new sets of integrable weights are found using this approach.
Lies, Damned Lies, and Statistics (in Geology)
Vermeesch, Pieter
2009-11-01
According to Karl Popper's epistemology of critical rationalism, scientists should formulate falsifiable hypotheses rather than produce ad hoc answers to empirical observations. In other words, we should predict and test rather than merely explain [Popper, 1959]. Sometimes, statistical tests such as chi-square, t, or Kolmogorov-Smirnov are used to make deductions more “objective.” Such tests are used in a wide range of geological subdisciplines [see Reimann and Filzmoser, 2000; Anderson and Johnson, 1999; Lørup et al., 1998; Sircombe and Hazelton, 2004].
Probability, Statistics, and Stochastic Processes
Olofsson, Peter
2012-01-01
This book provides a unique and balanced approach to probability, statistics, and stochastic processes. Readers gain a solid foundation in all three fields that serves as a stepping stone to more advanced investigations into each area. The Second Edition features new coverage of analysis of variance (ANOVA), consistency and efficiency of estimators, asymptotic theory for maximum likelihood estimators, empirical distribution function and the Kolmogorov-Smirnov test, general linear models, multiple comparisons, Markov chain Monte Carlo (MCMC), Brownian motion, martingales, and
Functional Morphology and Symmetry in the Odontocete Ear Complex.
Ary, William; Cranford, Ted W; Berta, Annalisa; Krysl, Petr
2016-01-01
Odontocete ear complexes or tympanoperiotic complexes (TPCs) were compared for asymmetry. Left and right TPCs were collected from one long-beaked common dolphin (Delphinus capensis) and one Amazon River dolphin (Inia geoffrensis). Asymmetry was assessed by volumetric comparisons of left and right TPCs and by visual comparison of superimposed models of the right TPC to a reflected mirror image of the left TPC. Kolmogorov-Smirnov tests were performed to compare the resonant frequencies of the TPCs as calculated by vibrational analysis. All analyses found slight differences between TPCs from the same specimen in contrast to the directional asymmetry in the nasal region of odontocete skulls.
Near-inertial currents off the east coast of India
Mukherjee, A.; Shankar, D.; Aparna, S.G.; Amol, P.; Fernando, V.; Fernandes, R.; Khalap, S.T.; Satlekar, N.P.; Agarvadekar, Y.; Gaonkar, M.G.; Tari, A.P.; Kankonkar, A.; Vernekar, S.
, however, does not give an idea of the magnitude of the NICs. does not give a feel for the actual magnitudes of these currents. Therefore, in addition to the histogram, we show a correspondence (also called Kolmogorov-Smirnov) plot (Figure 8a) to show... the residual current. Un- like the histogram, which examines the ratio day by day, the correspondence plot merely provides a statistical idea of the current magnitudes. For example, the strong inertial current (over 40 cm/s) seen at Paradip implies a strong...
GROUP COHESION IN VOLLEYBALL CONTEXT OF THE STATE OF PARANÁ
Nascimento Junior,José Roberto Andrade do; BALBIM,Guilherme Moraes; Vieira,Lenamar Fiorese
2013-01-01
Abstract: This descriptive correlational study aimed to analyze the perception of group cohesion of volleyball’s adult teams of state of Paraná. The subjects were 155 athletes male and female. The instruments used were the Group Environment Questionnaire (GEQ). For data analysis we applied the Kolmogorov-Smirnov test, Cronbach’s alpha, Spearman’s correlation, Mann-Whitney and Multiple Regression (p < 0.05). The results showed that teams had good levels of group cohesion and social to the task...
Angraini, L. M.; Kartasasmita, B.; Dasari, D.
2017-02-01
This study examined the university students’ mathematically critical thinking ability through Concept Attainment Model learning. The Kolmogorov-Smirnov test, Levene test, t test, ANOVA one and two ways were used to analyse the data. The results of this study showed that (1) there is no difference grade on the student’s mathematical critical thinking ability between experimental group and conventional group as a whole, (2) there is no difference on the students’ mathematical critical thinking ability of experimental classes based on their mathematical early ability (3) there is no interaction between the learning that is used with the students’ mathematical early ability on the students’ mathematical critical thinking ability.
Effect of Policy Reforms on Market Efficiency: Evidence from Dhaka Stock Exchange
Md. Mahmudul Alam
2011-01-01
Full Text Available The paper tries to find evidence supporting the impact of continuous policy reforms on the market efficiency on the Dhaka Stock Exchange (DSE. Different policies formed/reformed from 1994 to 2005 were categorized in eleven groups depending on their time of issue and subject matter. To get the result, both nonparametric test (Kolmogrov-Smirnov normality test and run test and parametric test (autocorrelation test, autoregression have been performed. Analyses were done for each policy group, and it is found that formed/reformed policies for DSE during the study period failed to improve the market efficiency even in the weak form level.
Petriccione, Milena; Ciniglia, Claudia
2012-07-01
The aim of this study was to confirm the utility of the Comet assay as a genotoxicity screening test for evaluating the impact of walnut husk aqueous extract. Phytotoxicity assays using diluted and undiluted walnut husk aqueous extracts were performed on young roots of Raphanus sativus (radish), and the Comet assay was used to evaluate DNA integrity in isolated radish radicle nuclei. The results reveal a dose-dependent accumulation of DNA damage in radish radicles treated with walnut husks water extract and that the Kolmogorov-Smirnov test combined with Johnson SB distribution was the best approach for describing Comet assay data.
The condensate for two dynamical chirally improved quarks in QCD
Lang, C B; Ortner, W; Majumdar, Pushan; Ortner, Wolfgang
2007-01-01
We compare the eigenvalue spectra of the Dirac operator from a simulation with two mass degenerate dynamical chirally improved fermions with Random Matrix Theory. Comparisons with distribution of k-th eigenvalues (k=1,2,3) in fixed topological sectors (nu=0,1) are carried out using the Kolmogorov-Smirnov test. The eigenvalue distributions are well described by the RMT predictions. The match allows us to read off the quark condensate in the chiral limit directly. Correcting for finite size and renormalization we obtain a mean value of -(276 (11)(16) MeV)**3 in the MS-bar scheme.
Observables of non-equilibrium phase transition
Tomasik, Boris; Melo, Ivan; Kopecna, Renata
2015-01-01
Rapidly expanding fireball which undergoes first-order phase transition will supercool and proceed via spinodal decomposition. Hadrons are produced from the individual fragments as well as leftover matter filling the space between them. Emission from fragments should be visible in rapidity correlations, particularly of protons. Also, even within narrow centrality classes, rapidity distributions will be fluctuating from one event to another in case of fragmentation. This can be identified with the help of Kolmogorov-Smirnov test. Finally, a method is presented which allows to sort events with varying rapidity distributions in such a way, that events with similar rapidity histograms are grouped together.
Resonant Production of Sterile Neutrinos in the Early Universe
Gilbert, Lauren; Grohs, Evan; Fuller, George M.
2016-06-01
This study examines the cosmological impacts of a light resonantly produced sterile neutrino in the early universe. Such a neutrino could be produced through lepton number-driven Mikheyev-Smirnov-Wolfenstein (MSW) conversion of active neutrinos around big bang nucleosynthesis (BBN), resulting in a non-thermal spectrum of both sterile and electron neutrinos. During BBN, the neutron-proton ratio depends sensitively on the electron neutrino flux. If electron neutrinos are being converted to sterile neutrinos, this makes the n/p ratio a probe of possible new physics. We use observations of primordial Yp and D/H to place limits on this process.
Comparison of Centauro and usual {gamma}'s events
Barroso, S.L.C.; Beggio, P.C.; Carvalho, A.O. de; Marques, M.D.O.; Menon, M.J.; Navia, C.E.; Oliveira, R. de; Shibuya, E.H
1999-03-01
The B-J Collaboration experiments discovered high transverse momenta in hadronic interactions, through cosmic ray events. Among then, mean transverse momenta < P{sub T{sub h}} > of the order of 1 GeV/c events were found and such events were nicknamed Centauro events. As the high transverse momenta are of hadronic particles, naturally this is connected with the criteria of identification of secondaries. To have more confidence on the abnormal features of Centauro events, we used the Kolmogorov-Smirnov non parametric test, aiming to show the discrepancy with normal events.
Quality of life in the workplace for nursing staff at public healthcare institutions 1
Zavala,María Olga Quintana; Klinj, Tatiana Paravic; Carrillo, Katia Lorena Saenz
2016-01-01
Abstract Objective: to determine the quality of life in the workplace for nursing staff at public institutions in Hermosillo, Sonora, Mexico. Method: quantitative, correlational, cross-sectional, and comparative. We used a probabilistic sample of 345 nurses with data collected in 2013 using an instrument created by the authors to gather bio-socio-demographic data and the CVT-GOHISALO instrument with a Cronbach's alpha of 0.95. SPSS 15 was used to analyze the data. A Kolmogorov-Smirnov test wa...
Study of detection performance of passive bistatic radars based on FM broadcast
Shan Tao; Tao Ran; Wang Yue; Zhou Siyong
2007-01-01
The passive bistatic radar based on the FM broadcast has inherent superiority with respect to its survivability. In this article, the ambiguity function (AF) and the cross ambiguity function (CAF) of the FM radio signal are analyzed and illustrated.The Kolmogorov Smirnov (K-S) test verifies that the amplitude probability density function of the CAF side lobes is exponential; the distribution of the target is also deduced. Finally, the detection performance of the passive radar is studied, and the result shows that this new type bistatic radar has favorable detection capability.
Yeh, H. Y.
1973-01-01
Studies are reported of the probability distribution of yield strength for mild steel, and the application of numerical techniques to solve mechanical vibration problems. Tensile experiments were conducted for 50 cold rolled and 38 hot rolled mild steel rods. Chi-square, Kolmogro-Smirnov and goodness-of-fit methods are used to test the normality or lognormality of the experimental results. As an example of the application of numerical techniques, a nonlinear dash-pot-speing system subjected to seismic excitation is analyzed by using the fourth-order Runge-Kutta integrated method.
SELF-SIMILAR SOLUTIONS OF FRACTURE DYNAMICS PROBLEMS ON AXIALLY SYMMETRY
吕念春; 程靳; 程云虹; 屈德志
2001-01-01
By the theory of complex functions, a penny-shaped crack on axially symmetric propagating problems for composite materials was studied. The general representations of the analytical solutions with arbitrary index of self-similarity were presented for fracture elastodynamics problems on axially symmetry by the ways of self-similarity under the /addershaped loads. The problerns dealt with can be transformed into Riemann-Hilbert problems and their closed analytical solutions are obtained rather simple by this method. After those analytical solutions are utilized by using the method of rotational superposition theorem in conjunction with that of Smirnov-Sobolev, the solutions of arbitrary complicated problems can be obtained.
Verification of LHS distributions.
Swiler, Laura Painton
2006-04-01
This document provides verification test results for normal, lognormal, and uniform distributions that are used in Sandia's Latin Hypercube Sampling (LHS) software. The purpose of this testing is to verify that the sample values being generated in LHS are distributed according to the desired distribution types. The testing of distribution correctness is done by examining summary statistics, graphical comparisons using quantile-quantile plots, and format statistical tests such as the Chisquare test, the Kolmogorov-Smirnov test, and the Anderson-Darling test. The overall results from the testing indicate that the generation of normal, lognormal, and uniform distributions in LHS is acceptable.
Evaluating Kolmogorov\\'s Distribution
George Marsaglia
2003-11-01
Full Text Available Kolmogorov's goodness-of-fit measure, Dn , for a sample CDF has consistently been set aside for methods such as the D+n or D-n of Smirnov, primarily, it seems, because of the difficulty of computing the distribution of Dn . As far as we know, no easy way to compute that distribution has ever been provided in the 70+ years since Kolmogorov's fundamental paper. We provide one here, a C procedure that provides Pr(Dn .999 with n's of several thousand, we provide a quick approximation that gives accuracy to the 7th digit for such cases.
杨斌
2015-01-01
文章概述了Anderson-Darling test(ad检验)、Pearson chi-square test(pearson检验)以及Kolmogorov-Smirnov(Lillie检验)的统计原理,并用随机模拟的方法比较了ad检验、lillie检验、pearson检验、Shapiro-Francia test(sf检验)、Cramer-von Mises test(cvm检验)这5种方法的优劣,且对ad检验给出了具体检验的统计方法及结果.
Emadldin Hezavehi
2016-09-01
Full Text Available In this paper was investigated the effects relationship marketing on customer loyalty and satisfaction.By a 5-point questionnairewere collected Experts and customers opinion in Borujerd textile factory.Then, using statistical methods,significantly and accuracy of Questionnaire was confirmed. Using regression and Kolmogorov-Smirnov test the relationship between independent and dependent variables were examined.Interaction and communication factors have a significant impact on customer satisfaction, alsobonding and empathy dimensions have moderate sensitivity on customer satisfaction. And dimensions of commitment and common values showedlow relatively impact on customer satisfaction.
A Uqp(u2) model for rotational bands of nuclei
Barbier, R.; Meyer, J.; Kibler, M.
1994-01-01
A rotational model is developed from a new version of the two-parameter quantum algebra $U_{qp}({\\rm u}_2)$. This model is applied to the description of some recent experimental data for the rotating superdeformed nuclei $^{192-194-196-198}{\\rm Pb}$ and $^{192-194 }{\\rm Hg}$. A comparison between the $U_{qp}({\\rm u}_2)$ model presented here and the Raychev-Roussev-Smirnov model with $U_{q }({\\rm su}_2)$ symmetry shows the relevance of the introduction of a second parameter of a ``quantum algebra'' type.
Solar neutrinos and the MSW effect for three-neutrino mixing
Shi, X.; Schramm, David N.
1991-01-01
Researchers considered three-neutrino Mikheyev-Smirnov-Wolfenstein (MSW) mixing, assuming m sub 3 is much greater than m sub 2 is greater than m sub 1 as expected from theoretical consideration if neutrinos have mass. They calculated the corresponding mixing parameter space allowed by the Cl-37 and Kamiokande 2 experiments. They also calculated the expected depletion for the Ga-71 experiment. They explored a range of theoretical uncertainty due to possible astrophysical effects by varying the B-8 neutrino flux and redoing the MSW mixing calculation.
E sub 6 leptoquarks and the solar neutrino problem
Roulet, Esteban
1991-01-01
The possibility that non-conventional neutrino oscillations take place in the superstring inspired E sub 6 models is considered. In this context, the influence of leptoquark mediated interactions of the neutrinos with nucleons in the resonant flavor conversion is discussed. It is shown that this effect can be significant for v sub e - v sub tau oscillations if these neutrinos have masses required in the ordinary Mikheyev-Smirnov-Wolfenstein (MSW) effect, and may lead to a solution of the solar neutrino problem even in the absence of vacuum mixings. On the other hand, this model cannot lead to a resonant behavior in the sun if the neutrinos are massless.
Comment on the Alday-Maldacena solution in calculating scattering amplitude via AdS/CFT
Yang, Gang
2007-01-01
Following the recent proposal of Alday and Maldacena to obtain the strong coupling scattering amplitude in N=4 SYM via AdS/CFT, we point out that a unique solution can be obtained by imposing all the Virasoro constraints. In the case of four-gluon scattering, this solution is identical to the Alday-Maldacena solution, which is in accordance with the ansatz of Bern, Dixon and Smirnov. This also solves the moduli space problem of the four-point solution in a recent paper of Mironov, Morozov and...
利用大亚湾中微子实验装置探测超新星中微子%Detecting Supernova Neutrinos in Daya Bay Neutrino Laboratory
黄明阳; 郭新恒; 杨炳麟
2011-01-01
在利用大亚湾中微子实验装置研究超新星中微子探测过程中,需要考虑到中微子传播过程中受到各种效应的影响,包括超新星震荡效应、中微子集体效应、Mikheyev-Smirnov-Wolfenstein(MSW)效应和地球物质效应等.由于超新星中微子受到这些效应,不同味道的中微子之间振荡会发生变化,因而利用探测某些超新星中微子事例数之比,就有可能确定中微子的质量层次,得到中微子混合角θ13和中微子绝对质量的信息.%While detecting supernova neutrinos in the Daya Bay neutrino laboratory, several supernova neutrino effects need to be considered, including the supernova shock effects, the neutrino collective effects, the Mikheyev-Smirnov-Wolfenstein (MSW) effects, and the Earth matter effects. The phenomena of neutrino oscillation is affected by the above effects. Using some ratios of the event numbers of different supernova neutrinos, we propose some possible methods to identify the mass hierarchy and acquire information about the neutrino mixing angle θ13 and neutrino masses.
Halil Karahan
2013-03-01
Full Text Available Knowing the properties like amount, duration, intensity, spatial and temporal variation etc of precipitation which is the primary input of water resources is required for planning, design, construction and operation studies of various sectors like water resources, agriculture, urbanization, drainage, flood control and transportation. For executing the mentioned practices, reliable and realistic estimations based on existing observations should be made. The first step of making a reliable estimation is to test the reliability of existing observations. In this study, Kolmogorov-Smirnov, Anderson-Darling and Chi-Square goodness of distribution fit tests were applied for determining to which distribution the measured standard duration maximum precipitation values (in the years 1929-2005 fit in the meteorological stations operated by the Turkish State Meteorological Service (DMİ which are located in the city and town centers of Aegean Region. While all the observations fit to GEV distribution according to Anderson-Darling test, it was seen that short, mid-term and long duration precipitation observations generally fit to GEV, Gamma and Log-normal distribution according to Kolmogorov-Smirnov and Chi-square tests. To determine the parameters of the chosen probability distribution, maximum likelihood (LN2, LN3, EXP2, Gamma3, probability-weighted distribution (LP3,Gamma2, L-moments (GEV and least squares (Weibull2 methods were used according to different distributions.
邵建利; 宋宁; 张滟
2014-01-01
Along with the rapid development of electronic commerce , the fraud risk of third-party payment platform on e-commerce presents the increasing trend .This paper constructs a scientific fraud risk identification model by Logistic Regression , and searches and determines the split point fraud transactions and normal transactions by Kolmogorov -Smirnov statistics , in order to estimate the fraud risk quantitatively .The results show that the model is stable and has high forecast accuracy , which can be used to identify the fraud risk of third -party payment .%随着电子商务的飞速发展，第三方支付平台欺诈风险呈现递增趋势。本文采用Logistic回归构建第三方支付的欺诈风险识别模型，并结合Kolmogorov －Smirnov 统计量来查找判断欺诈交易和正常交易的分割点，对欺诈风险进行量化估计。实证研究表明本文所构建模型比较稳定且预测比较准确，可大大提高风险识别能力，对第三方支付机构的风险管理具有重要作用。
A semiparametric Wald statistic for testing logistic regression models based on case-control data
WAN ShuWen
2008-01-01
We propose a semiparametric Wald statistic to test the validity of logistic regression models based on case-control data.The test statistic is constructed using a semiparametric ROC curve estimator and a nonparametric ROC curve estimator.The statistic has an asymptotic chi-squared distribution and is an alternative to the Kolmogorov-Smirnov-type statistic proposed by Qin and Zhang in 1997,the chi-squared-type statistic proposed by Zhang in 1999 and the information matrix test statistic proposed by Zhang in 2001.The statistic is easy to compute in the sense that it requires none of the following methods:using a bootstrap method to find its critical values,partitioning the sample data or inverting a high-dimensional matrix.We present some results on simulation and on analysis of two real examples.Moreover,we discuss how to extend our statistic to a family of statistics and how to construct its Kolmogorov-Smirnov counterpart.
Numerical evaluation of tensor Feynman integrals in Euclidean kinematics
Gluza, J.; Kajda [Silesia Univ., Katowice (Poland). Inst. of Physics; Riemann, T.; Yundin, V. [Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany)
2010-10-15
For the investigation of higher order Feynman integrals, potentially with tensor structure, it is highly desirable to have numerical methods and automated tools for dedicated, but sufficiently 'simple' numerical approaches. We elaborate two algorithms for this purpose which may be applied in the Euclidean kinematical region and in d=4-2{epsilon} dimensions. One method uses Mellin-Barnes representations for the Feynman parameter representation of multi-loop Feynman integrals with arbitrary tensor rank. Our Mathematica package AMBRE has been extended for that purpose, and together with the packages MB (M. Czakon) or MBresolve (A. V. Smirnov and V. A. Smirnov) one may perform automatically a numerical evaluation of planar tensor Feynman integrals. Alternatively, one may apply sector decomposition to planar and non-planar multi-loop {epsilon}-expanded Feynman integrals with arbitrary tensor rank. We automatized the preparations of Feynman integrals for an immediate application of the package sectordecomposition (C. Bogner and S. Weinzierl) so that one has to give only a proper definition of propagators and numerators. The efficiency of the two implementations, based on Mellin-Barnes representations and sector decompositions, is compared. The computational packages are publicly available. (orig.)
Gontscharuk, Veronika; Landwehr, Sandra; Finner, Helmut
2015-01-01
The higher criticism (HC) statistic, which can be seen as a normalized version of the famous Kolmogorov-Smirnov statistic, has a long history, dating back to the mid seventies. Originally, HC statistics were used in connection with goodness of fit (GOF) tests but they recently gained some attention in the context of testing the global null hypothesis in high dimensional data. The continuing interest for HC seems to be inspired by a series of nice asymptotic properties related to this statistic. For example, unlike Kolmogorov-Smirnov tests, GOF tests based on the HC statistic are known to be asymptotically sensitive in the moderate tails, hence it is favorably applied for detecting the presence of signals in sparse mixture models. However, some questions around the asymptotic behavior of the HC statistic are still open. We focus on two of them, namely, why a specific intermediate range is crucial for GOF tests based on the HC statistic and why the convergence of the HC distribution to the limiting one is extremely slow. Moreover, the inconsistency in the asymptotic and finite behavior of the HC statistic prompts us to provide a new HC test that has better finite properties than the original HC test while showing the same asymptotics. This test is motivated by the asymptotic behavior of the so-called local levels related to the original HC test. By means of numerical calculations and simulations we show that the new HC test is typically more powerful than the original HC test in normal mixture models.
The boundary value problem for discrete analytic functions
Skopenkov, Mikhail
2013-06-01
This paper is on further development of discrete complex analysis introduced by R.Isaacs, J.Ferrand, R.Duffin, and C.Mercat. We consider a graph lying in the complex plane and having quadrilateral faces. A function on the vertices is called discrete analytic, if for each face the difference quotients along the two diagonals are equal.We prove that the Dirichlet boundary value problem for the real part of a discrete analytic function has a unique solution. In the case when each face has orthogonal diagonals we prove that this solution uniformly converges to a harmonic function in the scaling limit. This solves a problem of S.Smirnov from 2010. This was proved earlier by R.Courant-K.Friedrichs-H.Lewy and L.Lusternik for square lattices, by D.Chelkak-S.Smirnov and implicitly by P.G.Ciarlet-P.-A.Raviart for rhombic lattices.In particular, our result implies uniform convergence of the finite element method on Delaunay triangulations. This solves a problem of A.Bobenko from 2011. The methodology is based on energy estimates inspired by alternating-current network theory. © 2013 Elsevier Ltd.
Conformally invariant scaling limits in planar critical percolation
Sun, Nike
2009-01-01
This survey gives an account of the emergence of conformal invariance in the scaling limit of critical percolation on the triangular lattice, as the lattice mesh is taken to zero. The main purpose is to provide a mostly self-contained proof of the result, due to Smirnov and to Camia and Newman, that the percolation exploration path has a conformally invariant scaling limit. To motivate this proof, we will review the conformal invariance of planar Brownian motion, as well as its connection to harmonic functions. We then prove Smirnov's result on the conformal invariance of crossing probabilities in the scaling limit. The remainder of the article describes how to pass from this result to the conformally invariant scaling limit of the exploration path. To do this we give an introduction to the Schramm-Loewner evolutions SLE(k); it is known that the exploration path converges to SLE(6). We also discuss how to make a rigorous definition of the scaling limit of a random curve, and we present the proof of Aizenman a...
Frequency Analysis of the Monthly Rainfall Data at Sulaimania Region, Iraq
Prof. Dr. Rafa H Al-Suhili
2016-08-01
Full Text Available Different frequency distributions models were fitted to the monthly rainfall data in Sulaimania region, north Iraq. Three rainfall gauging stations data were used, Sulaimania city, Dokan Dam, and Derbendikhan Dam metrological stations, for the period (1984-2010. The distributions models fitted are of Normal, Log-normal, Wiebull, Exponential and Two parameters Gamma type. The Kolmogorov-Smirnov test was used to evaluate the goodness of fit. The fittings were done for the overall data and for each month separately. The Gamma, Exponential and Weibull distributions were found as the best fits for the three stations respectively for the overall models, while for the monthly models different distribution type was found as the best fit for each month and each station, however the Gamma distributions was found to have the highest percent of best fit. The best fitted distributions were used to forecast three sets of monthly rainfall data for each station and compared to the observed ones for the last 7- years of data. The t-test,F-test and KolmogorovSmirnov test indicate the capability of these models to produce data that has the same frequency distribution of the observed one. Comparison between the performances of the overall and periodic models reveals that there no distinguishable improvement of the monthly model over the overall one.
Winatty Krisma
2014-12-01
Full Text Available Plaque accumulation on internal surface of denture is a common problem among removable denture wearers. Poor denture cleanliness can increase colonization of Candida albicans and cause inflammatory reaction of denture-bearing mucosa, i.e. denture stomatitis. Objective: To find out the effect of denture cleanliness level on denture stomatitis on maxillary denture-bearing mucosa in a group of removable denture wearers who received prosthodontic treatment at Poliklinik Gigi RSMH Palembang and to investigate the denture hygiene habits of removable denture wearers. Methods: Thirty subjects participated in this study. Denture cleanliness level was assessed with disclosing solution to disclose denture plaque on internal surface of maxillary denture. Cleanliness level was graded according to Budtz-Jorgensen. Intraoral examination was done to determine any visible signs of denture stomatitis. Data referring to denture hygiene habits of removable denture wearers was collected from interview using questionnaire. Data were analyzed using the Komolgorov-Smirnov test. Results: Result of the study showed that 40% subjects had poor upper denture cleanliness. Denture stomatitis was observed on maxillary denture-bearing mucosa in 43.3% subjects. Kolmogorov-Smirnov test showed that there was a significant effect of denture cleanliness level on denture stomatitis on maxillary denture-bearing mucosa (p<0.05. Conclusion: Denture cleanliness level influence the occurence of denture stomatitis on maxillary denture bearing-mucosa in a group of removable denture wearers who received prosthodontic treatment.
Cristina Restrepo Arango
2012-12-01
Full Text Available Este trabajo re-evalúa la productividad de los autores sobre la literatura del péndulo publicada desde 1629 a 1885. Replica los datos del trabajo de Moreno-Cabo & Solaz-Portolés (2008. Se aplican los modelos del cuadrado inverso, poder inverso generalizado, Poisson compuesto y Poisson lognormal por el método de la máxima probabilidad. Los resultados obtenidos muestran que el modelo Poisson lognormal y el modelo del poder inverso generalizado son los que estiman los autores observados más coherentemente. El test estadístico Kolgomorov-Smirnov confirma el ajuste de los modelos del poder inverso generalizado, Poisson lognormal y Poisson compuesto y rechaza el ajuste del modelo del cuadrado inverso.This study examines the production of the literature on the pendulum published from 1629 to 1885. The findings of Moreno-Cabo & Solaz-Portolés (2008 are replicated. The data are analyzed through the following statistical methods: inverse square, generalized inverse power, and compound Poisson and Poisson log-normal by maximum likelihood models. The results show that the Poisson lognormal and generalized inverse power are those that estimate the observed authors most consistently. The statistical test Kolgomorov-Smirnov confirms the fit of the generalized inverse power, Poisson lognormal, and compound Poisson, while rejecting the inverse square model.
张香云; 程维虎
2012-01-01
Extreme value theory is mainly the study on extreme events of small probability & major impact. At present, the compound extreme value distribution has been widely used in hydrology, meteorology, earthquake, insurance, finance and other fields. In this paper, we establish binomial-generalized Pareto compound extreme value distribution model based on extreme value type theorem and PBDH theorem, derive parameter estimation of the established compound model by probability weighted moments, get critical values of Kolmogorov-Smirnov test statistic.%极值理论主要研究小概率、大影响的极端事件.当前,复合极值分布已经广泛应用于水文、气象、地震、保险、金融等领域.本文以极值类型定理和PBDH定理为理论依据,构建了二项-广义Pareto复合极值分布模型；使用概率加权矩方法,对所建立的复合模型推导参数估计式；利用计算机模拟,得到了Kolmogorov-Smirnov(简称KS)检验统计量的临界值.
Cosmic Bubble Image Wins NRAO Contest
2006-10-01
Taylor, required about 3,000 separate VLA observations taking 260 hours, augmented by data from the GBT. The VGPS is part, along with the Canadian Galactic Plane Survey and the Southern Galactic Plane Survey, of an international effort to produce a detailed atlas of our home Galaxy as seen by radio telescopes. Second place in the contest went to Fabian Walter of the Max Planck Institute for Astrophysics in Heidelberg, Germany, for a collection of galaxy images. Honorable Mentions were awarded to Michael Bietenholz of York University in Canada, Joeri van Leeuwen of the University of British Columbia, Neal Miller of NRAO and the Johns Hopkins University, and Yurii Pidopryhora of NRAO and Ohio University. The National Radio Astronomy Observatory is a facility of the National Science Foundation, operated under cooperative agreement by Associated Universities, Inc.
Rabelo, Gustavo Davi; Beletti, Marcelo Emílio; Dechichi, Paula
2010-10-01
The aim of this study was to evaluate the effects of radiotherapy in cortical bone channels network. Fourteen rabbits were divided in two groups and test group received single dose of 15 Gy cobalt-60 radiation in tibia, bilaterally. The animals were sacrificed and a segment of tibia was removed and histologically processed. Histological images were taken and had their bone channels segmented and called regions of interest (ROI). Images were analyzed through developed algorithms using the SCILAB mathematical environment, getting percentage of bone matrix, ROI areas, ROI perimeters, their standard deviations and Lacunarity. The osteocytes and empty lacunae were also counted. Data were evaluated using Kolmogorov-Smirnov, Mann Whitney, and Student's t test (P lacunarity were found between groups. In conclusion, the radiotherapy causes reduction of bone matrix and modifies the morphology of bone channels network. © 2010 Wiley-Liss, Inc.
Non-local velocity distribution function and one-flight approximation
Bakunin, O.G. [FOM Instituut voor Plasmafysica ' Rijnhuizen' , Associate Euroatom-FOM, 3430 BE Nieuwegein (Netherlands) and Russian Research Center ' Kurchatov Institute' , Nuclear Fusion Institute, sq. Kurchatova 1, 123182 Moscow (Russian Federation)]. E-mail: oleg_bakunin@yahoo.com
2004-09-13
The functional equation describing the collisionless particle velocity distribution function f(V) is considered in the framework of probabilistic approach. The key element of the collisionless particles description is using the waiting time distribution {psi}(t). The solution of the considered functional is obtained for several model functions {psi}(t) and it leads to the power form tails of the velocity distribution f(V). It is possible to adopt considered functional to the Laplace transformation form that allows us to accord 'collision' and 'collisionless' description. This Laplace form of the functional yields the Levy-Smirnov velocity distribution function with the characteristic exponent aL=1/2.
A cumulative entropy method for distribution recognition of model error
Liang, Yingjie; Chen, Wen
2015-02-01
This paper develops a cumulative entropy method (CEM) to recognize the most suitable distribution for model error. In terms of the CEM, the Lévy stable distribution is employed to capture the statistical properties of model error. The strategies are tested on 250 experiments of axially loaded CFT steel stub columns in conjunction with the four national building codes of Japan (AIJ, 1997), China (DL/T, 1999), the Eurocode 4 (EU4, 2004), and United States (AISC, 2005). The cumulative entropy method is validated as more computationally efficient than the Shannon entropy method. Compared with the Kolmogorov-Smirnov test and root mean square deviation, the CEM provides alternative and powerful model selection criterion to recognize the most suitable distribution for the model error.
Comparison of frequency distributions of doubled haploid and single seed descent lines in barley.
Choo, T M; Reinbergs, E; Park, S J
1982-09-01
Both doubled haploid (DH) and single seed descent (SSD) methods were used to derive homozygous lines from two crosses of barley. The frequency distributions of grain yield, heading date, and plant height of the DH and SSD lines were compared by the Mann-Whitney U test, Kolmogorov-Smirnov twosample test and Wald-Wolfowitz runs test. It was found that the DH lines distributed in the same manner as the SSD lines with respect to the three characters. The results indicated that although the SSD method had more opportunity for recombination than the DH method, it did not produce a sample of recombinants which differed significantly from the DH sample; thus both methods were equally efficient for use in deriving homozygous lines from F1 hybrids in a relatively short time.
Duarte Queirós, Sílvio M.
2012-07-01
We discuss the modification of the Kapteyn multiplicative process using the q-product of Borges [E.P. Borges, A possible deformed algebra and calculus inspired in nonextensive thermostatistics, Physica A 340 (2004) 95]. Depending on the value of the index q a generalisation of the log-Normal distribution is yielded. Namely, the distribution increases the tail for small (when q1) values of the variable upon analysis. The usual log-Normal distribution is retrieved when q=1, which corresponds to the traditional Kapteyn multiplicative process. The main statistical features of this distribution as well as related random number generators and tables of quantiles of the Kolmogorov-Smirnov distance are presented. Finally, we illustrate the validity of this scenario by describing a set of variables of biological and financial origin.
EVALUATION METHODS USED FOR TANGIBLE ASSETS BY ECONOMIC ENTITIES
Csongor CSŐSZ
2014-06-01
Full Text Available At many entities the net asset value is influenced by the evaluation methods applied for tangible assets, because the value of intangible assets and financial assets is small in most cases. The objective of this paper is to analyze the differences between the procedures / methods of evaluation applied by micro and small entities and medium and large entities for tangible assets in Romania and Hungary. Furthermore, we analyze the differences between the procedures / methods of evaluation applied by micro and small entities in Romania and Hungary, respectively the differences between medium and large entities regarding de evaluation methods for tangible assets in Romania and Hungary. For this empirical study the questionnaire is used – as research technique, and to demonstrate the significant differences between the evaluation methods we used the Kolmogorov – Smirnov Z test.
Velayutham Gopikrishna
2014-01-01
Statistical Analysis Used: The tests used for the statistical analysis were Kolmogorov- Smirnov and Shapiro Wilk tests, one-way ANOVA, and independent sample t-test. Results: Viscosity statistically increased with NaOCl concentration and decreased with increasing temperature. Amongst the tested NaOCl groups, 5.25% NaOCl at room temperature was significantly the most viscous (μ =1.5300 Cps while 1.25% NaOCl at 60°C was significantly the least viscous (μ =1.1800 Cps. Conclusions: 5.25% NaOCl and 17% EDTA are significantly viscous at room temperature. Elevating the temperature of 1.25% NaOCl to 60°C significantly reduces the viscosity of the NaOCl.
Dario Rukelj
2011-06-01
Full Text Available In this paper we present a framework for incorporating uncertainties into economic activity forecasts for Croatia. Using the vector error correction model (VECM proposed by Rukelj (2010 as the benchmark model, we forecast densities of the variable of interest using stochastic simulations for incorporating future and parameter uncertainty. We exploit the use of parametric and non-parametric approaches in generating random shocks as in Garrat et al. (2003. Finally we evaluate the results by the Kolmogorov-Smirnov and Anderson-Darling test of probability integral transforms. The main findings are: (1 the parametric and the non-parametric approach yield similar results; (2 the incorporation of parameter uncertainty results in much wider probability forecast; and (3 evaluation of density forecasts indicates better performance when only future uncertainties are considered and parameter uncertainties are excluded.
Neutrino Sources and Properties
Vissani, Francesco
2014-01-01
In this lecture, prepared for PhD students, basic considerations on neutrino interactions, properties and sites of production are overviewed. The detailed content is as follows: Sect. 1, Weak interactions and neutrinos: Fermi coupling; definition of neutrinos; global numbers. Sect. 2, A list of neutrino sources: Explanatory note and examples (solar pp- and supernova-neutrinos). Sect. 3, Neutrinos oscillations: Basic formalism (Pontecorvo); matter effect (Mikheev, Smirnov, Wolfenstein); status of neutrino masses and mixings. Sect. 4, Modifying the standard model to include neutrinos masses: The fermions of the standard model; one additional operator in the standard model (Weinberg); implications. One summary table and several exercises offer the students occasions to check, consolidate and extend their understanding; the brief reference list includes historical and review papers and some entry points to active research in neutrino physics.
Cosmology with ultralight pseudo Nambu-Goldstone bosons
Frieman, J.A.; Hill, C.T.; Stebbins, A.; Waga, I. [NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)]|[Department of Astronomy and Astrophysics, University of Chicago, Chicago, Illinois 60637 (United States)]|[Theoretical Physics Department, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)]|[Instituto de Fisica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21943 (Brazil)
1995-09-11
We explore the cosmological implications of an ultralight pseudo Nambu-Goldstone boson. With global spontaneous symmetry breaking scale {ital f}{congruent}10{sup 18} GeV and explicit breaking scale comparable to Mikheyev-Smirnov-Wolfenstein neutrino masses, {ital M}{similar_to}10{sup {minus}3}eV, such a field, which acquires a mass {ital m}{sub {phi}}{similar_to}{ital M}{sup 2}/{ital f}{similar_to}{ital H}{sub 0}, would currently dominate the energy density of the Universe. The field acts as an effective cosmological constant before relaxing into a condensate of nonrelativistic bosons. Such a model can reconcile dynamical estimates of the density parameter, {Omega}{sub {ital m}}{similar_to}0.2, with a spatially flat universe, yielding {ital H}{sub 0}{ital t}{sub 0}{congruent}1 consistent with limits from gravitational lens statistics.
Abimanyu, R.; Meidyawati, R.; Kamizar
2017-08-01
Perforation is one of the most common complications in endodontic treatment and can result in significant negative effects. It occurs when practitioners are trying to create an access pathway to the pulp chamber. Contamination from the perforation site to the root canal decreases healing ability; therefore, perforation must be treated as soon as it happens. The aim of this study was to evaluate microleakage of Mineral trioxide aggregate (MTA) and Biodentine™ as materials for treatment of access perforation. Microleakage was evaluated by using a stereo microscope to assess methylene blue 1% solution penetration between the restoration material and the perforation site. The data was analyzed with the Kolmogorov-Smirnov test. Based on statistical analysis of the data, there is no significant difference in microleakage between MTA and Biodentine™ as a material for treatment of access perforation.
Collective supernova neutrino oscillations
Mirizzi, Alessandro [Max Planck Institute for Physics, Munich (Germany)
2009-07-01
Neutrinos emitted by core-collapse supernovae (SNe) represent an important laboratory for both particle physics and astrophysics. While propagating in the dense SN environment, they can feel not only the presence of background matter (via ordinary Mikheev-Smirnov-Wolfenstein effects) but also of the gas of neutrinos and antineutrinos (via neutrino-neutrino interaction effects). The neutrino-neutrino interactions appear to modify the flavor evolution of SN neutrinos in a collective way, completely different from the ordinary matter effects. In these conditions, the flavor evolution equations become highly nonlinear, sometimes resulting in surprising phenomena when the entire neutrino system oscillates coherently as a single collective mode. In this talk, I present the recent results on collective supernova neutrino flavor conversions and I discuss about the sensitivity of these effects to the ordering of the neutrino mass spectrum.
Measurement of atmospheric neutrino oscillations and matter effects with PINGU
Coenders, Stefan; Euler, Sebastian; Krings, Kai; Vehring, Markus; Wallraff, Marius; Wiebusch, Christopher [RWTH Aachen Univ. (Germany). III. Physikalisches Inst.; Collaboration: IceCube-Collaboration
2013-07-01
With IceCube's low-energy extension DeepCore the first significant effects of atmospheric neutrino oscillations have been observed. The planned ''Precision Icecube Next Generation Upgrade'' (PINGU) inside DeepCore will lower the energy threshold to a few GeV, where matter effects of neutrino oscillations have to be taken into account. The Mikheyev-Smirnov-Wolfenstein (MSW) effect modifies the mixing between flavor and mass eigenstates of the neutrinos, resulting in stronger oscillations. Furthermore, neutrinos when passing through the Earth core experience parametric enhancement due to multiple discontinuities in the electron density. In this talk the effects of matter oscillations and the capabilities to measure these effects with PINGU are investigated.
Feature Selection based on Machine Learning in MRIs for Hippocampal Segmentation
Tangaro, Sabina; Brescia, Massimo; Cavuoti, Stefano; Chincarini, Andrea; Errico, Rosangela; Inglese, Paolo; Longo, Giuseppe; Maglietta, Rosalia; Tateo, Andrea; Riccio, Giuseppe; Bellotti, Roberto
2015-01-01
Neurodegenerative diseases are frequently associated with structural changes in the brain. Magnetic Resonance Imaging (MRI) scans can show these variations and therefore be used as a supportive feature for a number of neurodegenerative diseases. The hippocampus has been known to be a biomarker for Alzheimer disease and other neurological and psychiatric diseases. However, it requires accurate, robust and reproducible delineation of hippocampal structures. Fully automatic methods are usually the voxel based approach, for each voxel a number of local features were calculated. In this paper we compared four different techniques for feature selection from a set of 315 features extracted for each voxel: (i) filter method based on the Kolmogorov-Smirnov test; two wrapper methods, respectively, (ii) Sequential Forward Selection and (iii) Sequential Backward Elimination; and (iv) embedded method based on the Random Forest Classifier on a set of 10 T1-weighted brain MRIs and tested on an independent set of 25 subjects...
PENGGUNAAN TEKNIK MODELING TERHADAP PERENCANAAN KARIR SISWA
author Sofwan Adiputra
2015-01-01
Full Text Available This study aimed to lead stdents in order to they are able to plan career by comprehending their interest and potential toward a task at the first grade of senior high school Yasmida Ambarawa. This study employed quassi-experimental method with the non-equivalent control group. Purposive sampling technique was used to determine the simple. This study used non-parametric statistic analysis with level test (uji jenjang signed ranks test and smirnov-kolmogorof method for dable sample group. Based on the finding, it can be concluded that career planning which applied earlier will develop responsibility attitude for students so they are able to develop their abaility as maximum as possible, and not to do deviation toward development duty. The use of modeling technique was effective to improve students career planning at the first grade of senior high school Yasmida Ambarawa.Keywords: Group Counseling, Modeling Techniques, Career Planning
Low Energy 8 B Solar Neutrinos with the Wideband Intelligent Trigger at Super-Kamiokande
Elnimr, Muhammad; Super-Kamiokande Collaboration
2017-09-01
The water Cherenkov experiment Super-Kamiokande (SK) has accumulated a sample of ∼ 90k solar neutrino data in the past two decades. Currently, the detector measures recoil electrons from solar 8 B neutrino-electron scattering above a kinetic energy of ∼ 3.5 MeV, limited by the capacity of the software trigger, although electrons as low as 2.5 MeV can be reconstructed. The next frontier for the low energy program at Super-K is the current operation of the Wideband Intelligent Trigger (WIT) to push the trigger threshold to the event reconstruction limit of 2.5 MeV. This opens up the possibility to explore the lower energy edge of the Mikheyev-Smirnov-Wolfenstein (MSW) effect in the sun. In this work we will present the prelimiary analysis of the accumlated WIT data taken so far as well as future prospects.
Sterile neutrinos and indirect dark matter searches in IceCube
Arguelles, Carlos A
2012-01-01
If light sterile neutrinos exist and mix with the active neutrino flavors, this mixing will affect the propagation of high-energy neutrinos from dark matter annihilation in the Sun. In particular, new Mikheyev-Smirnov-Wolfenstein resonances can occur, leading to almost complete conversion of some active neutrino flavors into sterile states. We demonstrate how this can weaken IceCube limits on neutrino capture and annihilation in the Sun and how potential future conflicts between IceCube constraints and direct detection or collider data might be resolved by invoking sterile neutrinos. We also point out that, if the dark matter--nucleon scattering cross section and the allowed annihilation channels are precisely measured in direct detection and collider experiments in the future, IceCube can be used to constrain sterile neutrino models using neutrinos from the dark matter annihilation.
Adjusting the log-Pearson type III function to even-aged eucalyptus stands data
Daniel Henrique Breda Binoti
2014-12-01
Full Text Available The objective of this study is to evaluate the efficiency of the log-Pearson tipo III function to describe the diameter structure of even-aged stands, and propose a diameter distribution model using the function. The modeling function performed by the log-Pearson tipo III was compared with the modeling performed with the Weibull function. For this we used data from permanent plots of eucalyptus, located in the Midwestern region of Minas Gerais. Adherence to the functions of the data was confirmed by applying the Kolmogorov-Smirnov test (KS. The diameter distribution models used were based on models proposed by Nogueira et al. (2005 and were evaluated in terms of RMSE (% and the correlation coefficient between estimated and observed values. All fitting to the data presented adherence by the KS test. All equations fitted for the recovery of the diameter distribution showed high correlation coefficients and can be used for modeling the diameter distribution of eucalyptus.
Survey of sampling-based methods for uncertainty and sensitivity analysis.
Johnson, Jay Dean; Helton, Jon Craig; Sallaberry, Cedric J. PhD. (.; .); Storlie, Curt B. (Colorado State University, Fort Collins, CO)
2006-06-01
Sampling-based methods for uncertainty and sensitivity analysis are reviewed. The following topics are considered: (1) Definition of probability distributions to characterize epistemic uncertainty in analysis inputs, (2) Generation of samples from uncertain analysis inputs, (3) Propagation of sampled inputs through an analysis, (4) Presentation of uncertainty analysis results, and (5) Determination of sensitivity analysis results. Special attention is given to the determination of sensitivity analysis results, with brief descriptions and illustrations given for the following procedures/techniques: examination of scatterplots, correlation analysis, regression analysis, partial correlation analysis, rank transformations, statistical tests for patterns based on gridding, entropy tests for patterns based on gridding, nonparametric regression analysis, squared rank differences/rank correlation coefficient test, two dimensional Kolmogorov-Smirnov test, tests for patterns based on distance measures, top down coefficient of concordance, and variance decomposition.
Revealing the pulsational properties of the V777 Her star KUV 05134+2605 by its long-term monitoring
Bognár, Zs; Córsico, A H; Kepler, S O; Győrffy, Á
2014-01-01
Context: KUV 05134+2605 is one of the 21 pulsating DB white dwarfs (V777 Her or DBV variables) known so far. The detailed investigation of the short-period and low-amplitude pulsations of these relatively faint targets requires considerable observational efforts from the ground, long-term single-site or multisite observations. The observed amplitudes of excited modes undergo short-term variations in many cases, which makes the determination of pulsation modes difficult. Methods: We re-analysed the data already published, and collected new measurements. We compared the frequency content of the different datasets from the different epochs and performed various tests to check the reliability of the frequency determinations. The mean period spacings were investigated with linear fits to the observed periods, Kolmogorov-Smirnov and Inverse Variance significance tests, and Fourier analysis of different period sets, including a Monte Carlo test simulating the effect of alias ambiguities. We employed fully evolutiona...
The Kullback-Leibler Divergence as an Estimator of the Statistical Properties of CMB Maps
Ben-David, Assaf; Jackson, Andrew D
2015-01-01
The identification of unsubtracted foreground residuals in the cosmic microwave background maps on large scales is of crucial importance for the analysis of polarization signals. These residuals add a non-Gaussian contribution to the data. We propose the Kullback-Leibler (KL) divergence as an effective, non-parametric test on the one-point probability distribution function of the data. With motivation in information theory, the KL divergence takes into account the entire range of the distribution and is highly non-local. We demonstrate its use by analyzing the large scales of the Planck 2013 SMICA temperature fluctuation map and find it consistent with the expected distribution at a level of 6%. Comparing the results to those obtained using the more popular Kolmogorov-Smirnov test, we find the two methods to be in general agreement.
Suppression of self-induced flavor conversion in the supernova accretion phase.
Sarikas, Srdjan; Raffelt, Georg G; Hüdepohl, Lorenz; Janka, Hans-Thomas
2012-02-10
Self-induced flavor conversions of supernova (SN) neutrinos can strongly modify the flavor-dependent fluxes. We perform a linearized flavor stability analysis with accretion-phase matter profiles of a 15M[symbol: see text] spherically symmetric model and corresponding neutrino fluxes. We use realistic energy and angle distributions, the latter deviating strongly from quasi-isotropic emission, thus accounting for both multiangle and multienergy effects. For our matter and neutrino density profile we always find stable conditions: flavor conversions are limited to the usual Mikheyev-Smirnov-Wolfenstein effect. In this case one may distinguish the neutrino mass hierarchy in a SN neutrino signal if the mixing angle θ13 is as large as suggested by recent experiments.
Extrasolar planet population synthesis II: Statistical comparison with observation
Mordasini, Christoph; Benz, Willy; Naef, Dominique
2009-01-01
This is the second paper in a series of papers showing the results of extrasolar planet population synthesis calculations. In the companion paper (Paper I), we have presented in detail our methods. By applying an observational detection bias for radial velocity surveys, we identify the potentially detectable synthetic planets. The properties of these planets are compared in quantitative statistical tests with the properties of a carefully selected sub-population of actual exoplanets. We use a two dimensional Kolmogorov-Smirnov test to compare the mass-distance distributions of synthetic and observed planets, as well as 1D KS tests to compare the mass, the semimajor axis and the [Fe/H] distributions. We find that some models can account to a reasonable degree of significance for the observed properties. We concurrently account for many other observed features, e.g. the "metallicity effect". This gives us confidence that our model captures several essential features of giant planet formation. Our simulations al...
On Wasserstein Two-Sample Testing and Related Families of Nonparametric Tests
Aaditya Ramdas
2017-01-01
Full Text Available Nonparametric two-sample or homogeneity testing is a decision theoretic problem that involves identifying differences between two random variables without making parametric assumptions about their underlying distributions. The literature is old and rich, with a wide variety of statistics having being designed and analyzed, both for the unidimensional and the multivariate setting. Inthisshortsurvey,wefocusonteststatisticsthatinvolvetheWassersteindistance. Usingan entropic smoothing of the Wasserstein distance, we connect these to very different tests including multivariate methods involving energy statistics and kernel based maximum mean discrepancy and univariate methods like the Kolmogorov–Smirnov test, probability or quantile (PP/QQ plots and receiver operating characteristic or ordinal dominance (ROC/ODC curves. Some observations are implicit in the literature, while others seem to have not been noticed thus far. Given nonparametric two-sample testing’s classical and continued importance, we aim to provide useful connections for theorists and practitioners familiar with one subset of methods but not others.
X-Ray Emission from Rotation-Powered Pulsars
LIN Gui-Fang; ZHANG Li
2005-01-01
@@ We study the properties of pulsed component of hard (2-10keV) x-ray emission from pulsars based on the new version of outer gap model we proposed previously [Astrophys.J.604 (2004) 317].On the frame of this outer gap model, we derive an expression of non-thermal pulsed x-ray luminosity of rotation-powered pulsars, and then apply it to the pulsars whose pulsed x-rays are detected by ASCA.Using the Kolmogorov-Smirnov test,we determine the model parameter.The present results indicate LX ∝ L1.15sd for these x-ray pulsars, which is consistent with the observed data.
Statistical Analysis by Statistical Physics Model for the STOCK Markets
Wang, Tiansong; Wang, Jun; Fan, Bingli
A new stochastic stock price model of stock markets based on the contact process of the statistical physics systems is presented in this paper, where the contact model is a continuous time Markov process, one interpretation of this model is as a model for the spread of an infection. Through this model, the statistical properties of Shanghai Stock Exchange (SSE) and Shenzhen Stock Exchange (SZSE) are studied. In the present paper, the data of SSE Composite Index and the data of SZSE Component Index are analyzed, and the corresponding simulation is made by the computer computation. Further, we investigate the statistical properties, fat-tail phenomena, the power-law distributions, and the long memory of returns for these indices. The techniques of skewness-kurtosis test, Kolmogorov-Smirnov test, and R/S analysis are applied to study the fluctuation characters of the stock price returns.
Comparison of Geant4-DNA simulation of S-values with other Monte Carlo codes
André, T. [Université Bordeaux 1, CENBG, UMR 5797, F-33170 Gradignan (France); CNRS, IN2P3, CENBG, UMR 5797, F-33170 Gradignan (France); Morini, F. [Research Group of Theoretical Chemistry and Molecular Modelling, Hasselt University, Agoralaan Gebouw D, B-3590 Diepenbeek (Belgium); Karamitros, M. [Université Bordeaux 1, CENBG, UMR 5797, F-33170 Gradignan (France); CNRS, IN2P3, CENBG, UMR 5797, F-33170 Gradignan (France); CNRS, INCIA, UMR 5287, F-33400 Talence (France); Delorme, R. [LPSC, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, Grenoble INP, 38026 Grenoble (France); CEA, LIST, F-91191 Gif-sur-Yvette (France); Le Loirec, C. [CEA, LIST, F-91191 Gif-sur-Yvette (France); Campos, L. [Departamento de Física, Universidade Federal de Sergipe, São Cristóvão (Brazil); Champion, C. [Université Bordeaux 1, CENBG, UMR 5797, F-33170 Gradignan (France); CNRS, IN2P3, CENBG, UMR 5797, F-33170 Gradignan (France); Groetz, J.-E.; Fromm, M. [Université de Franche-Comté, Laboratoire Chrono-Environnement, UMR CNRS 6249, Besançon (France); Bordage, M.-C. [Laboratoire Plasmas et Conversion d’Énergie, UMR 5213 CNRS-INPT-UPS, Université Paul Sabatier, Toulouse (France); Perrot, Y. [Laboratoire de Physique Corpusculaire, UMR 6533, Aubière (France); Barberet, Ph. [Université Bordeaux 1, CENBG, UMR 5797, F-33170 Gradignan (France); CNRS, IN2P3, CENBG, UMR 5797, F-33170 Gradignan (France); and others
2014-01-15
Monte Carlo simulations of S-values have been carried out with the Geant4-DNA extension of the Geant4 toolkit. The S-values have been simulated for monoenergetic electrons with energies ranging from 0.1 keV up to 20 keV, in liquid water spheres (for four radii, chosen between 10 nm and 1 μm), and for electrons emitted by five isotopes of iodine (131, 132, 133, 134 and 135), in liquid water spheres of varying radius (from 15 μm up to 250 μm). The results have been compared to those obtained from other Monte Carlo codes and from other published data. The use of the Kolmogorov–Smirnov test has allowed confirming the statistical compatibility of all simulation results.
Association between Sick Leave Prescribing Practices and Physician Burnout and Empathy.
Oriol Yuguero Torres
Full Text Available To investigate the association between sick leave prescription and physician burnout and empathy in a primary care health district in Lleida, Spain.This descriptive study included 108 primary care doctors from 22 primary care centers in Lleida in 2014 (183,600 patients. Burnout was measured with the Maslach Burnout Inventory and empathy with the Jefferson Scale of Physician Empathy. The reliability of the instruments was measured by calculating Cronbach's alpha and normal distribution was analyzed using the Kolmogorov-Smirnov-Lilliefors and χ2 tests. Burnout and empathy scores were analyzed by age, sex, and place of work (urban vs rural. Sick leave data were obtained from the Catalan Health Institute.High empathy was significantly associated with low burnout. Neither empathy nor burnout were significantly associated with sick leave prescription.Sick leave prescription by physicians is not associated with physicians' empathy or burnout and may mostly depend on prescribing guidelines.
THE INITIAL MASS FUNCTION MODELED BY A LEFT TRUNCATED BETA DISTRIBUTION
Zaninetti, Lorenzo, E-mail: zaninetti@ph.unito.it [Dipartimento di Fisica, Via Pietro Giuria 1, I-10125 Torino (Italy)
2013-03-10
The initial mass function for stars is usually fitted by three straight lines, which means it has seven parameters. The presence of brown dwarfs (BDs) increases the number of straight lines to four and the number of parameters to nine. Another common fitting function is the lognormal distribution, which is characterized by two parameters. This paper is devoted to demonstrating the advantage of introducing a left truncated beta probability density function, which is characterized by four parameters. The constant of normalization, the mean, the mode, and the distribution function are calculated for the left truncated beta distribution. The normal beta distribution that results from convolving independent normally distributed and beta distributed components is also derived. The chi-square test and the Kolmogorov-Smirnov test are performed on a first sample of stars and BDs that belongs to the massive young cluster NGC 6611, and on a second sample that represents the masses of the stars of the cluster NGC 2362.
Bondarenko, Sergey
2016-01-01
We discuss a residual freedom of the next-to-leading BFKL eigenvalue that originates from ambiguity in redistributing the next-to-leading~(NLO) corrections between the adjoint BFKL eigenvalue and eigenfunctions in planar $\\mathcal{N}=4$ super-Yang-Mills~(SYM) Theory. In terms of the remainder function of the Bern-Dixon-Smirnov~(BDS) amplitude this freedom is translated to reshuffling correction between the eigenvalue and the impact factors in the multi-Regge kinematics~(MRK) in the next-to-leading logarithm approximation~(NLA). We show that the modified NLO BFKL eigenvalue suggested by the authors can be introduced in the MRK expression for the remainder function by shifting the anomalous dimension in the impact factor in such a way that the two and three loop remainder function is left unchanged to the NLA accuracy.
Bondarenko, Sergey; Prygarin, Alex
2016-07-01
We discuss a residual freedom of the next-to-leading BFKL eigenvalue that originates from ambiguity in redistributing the next-to-leading (NLO) corrections between the adjoint BFKL eigenvalue and eigenfunctions in planar {N}=4 super-Yang-Mills (SYM) Theory. In terms of the remainder function of the Bern-Dixon-Smirnov (BDS) amplitude this freedom is translated to reshuffling correction between the eigenvalue and the impact factors in the multi-Regge kinematics (MRK) in the next-to-leading logarithm approximation (NLA). We show that the modified NLO BFKL eigenvalue suggested by the authors in ref. [1] can be introduced in the MRK expression for the remainder function by shifting the anomalous dimension in the impact factor in such a way that the two and three loop remainder function is left unchanged to the NLA accuracy.
Integrating Multiple Microarray Data for Cancer Pathway Analysis Using Bootstrapping K-S Test
Bing Han
2009-01-01
Full Text Available Previous applications of microarray technology for cancer research have mostly focused on identifying genes that are differentially expressed between a particular cancer and normal cells. In a biological system, genes perform different molecular functions and regulate various biological processes via interactions with other genes thus forming a variety of complex networks. Therefore, it is critical to understand the relationship (e.g., interactions between genes across different types of cancer in order to gain insights into the molecular mechanisms of cancer. Here we propose an integrative method based on the bootstrapping Kolmogorov-Smirnov test and a large set of microarray data produced with various types of cancer to discover common molecular changes in cells from normal state to cancerous state. We evaluate our method using three key pathways related to cancer and demonstrate that it is capable of finding meaningful alterations in gene relations.
On The Non-Gaussian Errors in High-z Supernovae Type Ia Data
Singh, Meghendra; Sharma, Amit; Gupta, Shashikant; Sharma, Satendra
2016-01-01
The nature of random errors in any data set that is Gaussian is a well established fact according to the Central Limit Theorem. Supernovae type Ia data have played a crucial role in major discoveries in cosmology. Unlike in laboratory experiments, astronomical measurements can not be performed in controlled situations. Thus, errors in astronomical data can be more severe in terms of systematics and non-Gaussianity compared to those of laboratory experiments. In this paper, we use the Kolmogorov-Smirnov statistic to test non-Gaussianity in high-z supernovae data. We apply this statistic to four data sets, i.e., Gold data(2004), Gold data(2007), Union2 catalogue and the Union2.1 data set for our analysis. Our results shows that in all four data sets the errors are consistent with the Gaussian distribution.
Smirnov, D A; Velazquez, J L P; Wennberg, R A; Bezruchko, B P
2005-01-01
We demonstrate in numerical experiments that estimators of strength and directionality of coupling between oscillators based on modeling of their phase dynamics [D.A. Smirnov and B.P. Bezruchko, Phys. Rev. E 68, 046209 (2003)] are widely applicable. Namely, although the expressions for the estimators and their confidence bands are derived for linear uncoupled oscillators under the influence of independent sources of Gaussian white noise, they turn out to allow reliable characterization of coupling from relatively short time series for different properties of noise, significant phase nonlinearity of the oscillators, and non-vanishing coupling between them. We apply the estimators to analyze a two-channel human intracranial epileptic electroencephalogram (EEG) recording with the purpose of epileptic focus localization.
Fractal Characteristics Analysis of Blackouts in Interconnected Power Grid
Wang, Feng; Li, Lijuan; Li, Canbing
2017-01-01
The power failure models are a key to understand the mechanism of large scale blackouts. In this letter, the similarity of blackouts in interconnected power grids (IPGs) and their sub-grids is discovered by the fractal characteristics analysis to simplify the failure models of the IPG. The distri......The power failure models are a key to understand the mechanism of large scale blackouts. In this letter, the similarity of blackouts in interconnected power grids (IPGs) and their sub-grids is discovered by the fractal characteristics analysis to simplify the failure models of the IPG....... The distribution characteristics of blackouts in various sub-grids are demonstrated based on the Kolmogorov-Smirnov (KS) test. The fractal dimensions (FDs) of the IPG and its sub-grids are then obtained by using the KS test and the maximum likelihood estimation (MLE). The blackouts data in China were used...
An Analysis of NTSC's Timekeeping Hydrogen Masers
Hui-jie, Song; Shao-wu, Dong; Zheng-ming, Wang; Li-li, Qu; Yue-juan, Jing; Wei, Li
2016-10-01
In this article, the hydrogen masers in the NTSC (National Time Service Center) timekeeping laboratory are tested. In order to avoid the impact of larger noise of caesium atomic clocks, TA(k) or UTC(k) is not used as reference, instead, the four hydrogen masers are mutually referred and tested. The frequency stability of hydrogen masers is analyzed using the four-cornered hat method, and the Allan standard deviations of each single hydrogen maser in different sample times are estimated. Then, according to the characteristics of hydrogen masers, by removing the trend term, excluding outliers, and smoothing the data with a mathematical method to separate the Gaussian noises of hydrogen masers, and finally by through the Kolmogorov-Smirnov test, the Gaussian noise of each hydrogen maser is estimated.
Analysis of NTSC's Timekeeping Hydrogen Masers
Song, H. J.; Dong, S. W.; Wang, Z. M.; Qu, L. L.; Jing, Y. J.; Li, W.
2015-11-01
In this article, the hydrogen masers were tested in NTSC (National Time Service Center) keeping time laboratory. In order to avoid the impact of larger noise of caesium atomic clocks, TA(k) or UTC(k) was not used as reference, and four hydrogen masers were mutually referred and tested. The frequency stabilities of hydrogen masers were analyzed by using four-cornered hat method, and the Allan standard deviation of single hydrogen maser was estimated in different sampling time. Then according to the characteristics of hydrogen masers, by removing the trend term, excluding outliers, and smoothing data with mathematical methods to separate the Gaussian noise of hydrogen masers, and finally through the normal Kolmogorov-Smirnov test, a single hydrogen maser's Gaussian noise has been estimated.
Supernova constraints on neutrino oscillation and EoS for proto-neutron star
Kajino, T. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan and Department of Astronomy, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033 (Japan); Aoki, W. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Cheoun, M.-K. [Department of Physics, Soongsil University, Seoul 156-743 (Korea, Republic of); Hayakawa, T. [Japan Atomic Energy Agency, Shirakara-Shirane 2-4, Tokai-mura, Ibaraki 319-1195 (Japan); Hidaka, J. [National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Hirai, Y.; Shibagaki, S. [National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan and Department of Astronomy, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033 (Japan); Mathews, G. J. [Department of Physics, University of Notre Dame, IN 46556 (United States); Nakamura, K. [Waseda University, Ohkubo 3-4-1, Shinjuku, Tokyo 169-8555 (Japan); Suzuki, T. [Nihon University, Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550 (Japan)
2014-05-02
Core-collapse supernovae eject huge amount of flux of energetic neutrinos which affect explosive nucleosynthesis of rare isotopes like {sup 7}Li, {sup 11}B, {sup 92}Nb, {sup 138}La and Ta and r-process elements. Several isotopes depend strongly on the neutrino flavor oscillation due to the Mikheyev-Smirnov-Wolfenstein (MSW) effect. We here discuss how to determine the neutrino temperatures and propose a method to determine still unknown neutrino oscillation parameters, mass hierarchy and θ{sub 13}, simultaneously. Combining the recent experimental constraints on θ{sub 13} with isotopic ratios of the light elements discovered in presolar grains from the Murchison meteorite, we show that our method suggests at a marginal preference for an inverted neutrino mass hierarchy. We also discuss supernova relic neutrinos that may indicate the softness of the equation of state (EoS) of nuclear matter as well as adiabatic conditions of the neutrino oscillation.
Distributional Tests for Gravitational Waves from Core-Collapse Supernovae
Szczepanczyk, Marek; LIGO Collaboration
2017-01-01
Core-Collapse Supernovae (CCSN) are spectacular and violent deaths of massive stars. CCSN are some of the most interesting candidates for producing gravitational-waves (GW) transients. Current published results focus on methodologies to detect single GW unmodelled transients. The advantages of these tests are that they do not require a background for which we have an analytical model. Examples of non-parametric tests that will be compared are Kolmogorov-Smirnov, Mann-Whitney, chi squared, and asymmetric chi squared. I will present methodological results using publicly released LIGO-S6 data recolored to the design sensitivity of Advanced LIGO and that will be time lagged between interferometers sites so that the resulting coincident events are not GW.
Characterizing and modeling citation dynamics
Eom, Young-Ho; 10.1371/journal.pone.0024926
2011-01-01
Citation distributions are crucial for the analysis and modeling of the activity of scientists. We investigated bibliometric data of papers published in journals of the American Physical Society, searching for the type of function which best describes the observed citation distributions. We used the goodness of fit with Kolmogorov-Smirnov statistics for three classes of functions: log-normal, simple power law and shifted power law. The shifted power law turns out to be the most reliable hypothesis for all citation networks we derived, which correspond to different time spans. We find that citation dynamics is characterized by bursts, usually occurring within a few years since publication of a paper, and the burst size spans several orders of magnitude. We also investigated the microscopic mechanisms for the evolution of citation networks, by proposing a linear preferential attachment with time dependent initial attractiveness. The model successfully reproduces the empirical citation distributions and accounts...
Heart rate variability dynamics for the prognosis of cardiovascular risk.
Juan F Ramirez-Villegas
Full Text Available Statistical, spectral, multi-resolution and non-linear methods were applied to heart rate variability (HRV series linked with classification schemes for the prognosis of cardiovascular risk. A total of 90 HRV records were analyzed: 45 from healthy subjects and 45 from cardiovascular risk patients. A total of 52 features from all the analysis methods were evaluated using standard two-sample Kolmogorov-Smirnov test (KS-test. The results of the statistical procedure provided input to multi-layer perceptron (MLP neural networks, radial basis function (RBF neural networks and support vector machines (SVM for data classification. These schemes showed high performances with both training and test sets and many combinations of features (with a maximum accuracy of 96.67%. Additionally, there was a strong consideration for breathing frequency as a relevant feature in the HRV analysis.
Inference of Extreme Synchrony with an Entropy Measure on a Bipartite Network
Sato, Aki-Hiro
2012-01-01
This article proposes a method to quantify the structure of a bipartite graph with a network entropy from a statistical--physical point of view. The network entropy of a bipartite graph with random links is computed from numerical simulation. As an application of the proposed method to analyze collective behavior, the affairs in which participants quote and trade in the foreign exchange market are quantified. The network entropy per node is found to correspond to the macroeconomic situation. A finite mixture of Gumbel distributions is used to fit with the empirical distribution for the minimum values of network entropy per node in each week. The mixture of Gumbel distributions with parameter estimates by segmentation procedure is verified by Kolmogorov--Smirnov test. The finite mixture of Gumbel distributions can extrapolate the probability of extreme events that have never been observed.
An investigation of the role of job satisfaction in employees' organizational citizenship behavior.
Talachi, Rahil Kazemi; Gorji, Mohammad Bagher; Boerhannoeddin, Ali Bin
2014-06-01
Job satisfaction, as an integral part of organizational environment, can affect organizational citizenship behavior. Therefore, the present paper aimed at determination of the relationship between these two factors among the employees to provide an appropriate model. The population of this study consisted of all employees of Golestan Province industry, mine and trade organization (Iran), the number of whom is 154, out of which, 120 employees were selected as a sample by the simple random sampling method. For collecting the data, two questionnaires of job satisfaction and organizational citizenship behavior were applied, and the obtained data was analyzed using the statistical methods of Kolmogorov-Smirnov test, Spearman's correlation, Pearson's correlation coefficient, Regression analysis, F-test and T-test. From the results, it was found that the variable of job satisfaction had a significant positive relationship with organizational citizenship behavior and one unit increase in organizational citizenship behavior is resulted from 0.622 unit increase in job satisfaction.
[The outstanding figure of domestic military and civil public health services].
Pavlovskiĭ, L N
2011-01-01
The article presents data on the outstanding Soviet theorist and the organizer of Health Care, full member of Academy of Medical Science of the U.S.S.R., the Hero of Socialist Work, the colonel general of a health service E.I. Smirnov who has developed a lot on the theory and practice of civil and military public health services. Its contribution to communication between organizational forms of medical maintenance of armies and principles of military art, and also dependence of quality of medical aid to the population on the organizational structure of a treatment-and-prophylactic network were considered. E.I. Smirnova's personal role in improvement of organizational forms of medical maintenance of armies, theory and practice development of intermediate treatments with evacuation to destination, in the organization of antiepidemic maintenance of armies and development number of actual questions of modern military medicine are shown in the article.
Annunziata, Mario Alberto; Petri, Alberto; Pontuale, Giorgio; Zaccaria, Andrea
2016-10-01
We have considered the statistical distributions of the volumes of 1131 products exported by 148 countries. We have found that the form of these distributions is not unique but heavily depends on the level of development of the nation, as expressed by macroeconomic indicators like GDP, GDP per capita, total export and a recently introduced measure for countries' economic complexity called fitness. We have identified three major classes: a) an incomplete log-normal shape, truncated on the left side, for the less developed countries, b) a complete log-normal, with a wider range of volumes, for nations characterized by intermediate economy, and c) a strongly asymmetric shape for countries with a high degree of development. Finally, the log-normality hypothesis has been checked for the distributions of all the 148 countries through different tests, Kolmogorov-Smirnov and Cramér-Von Mises, confirming that it cannot be rejected only for the countries of intermediate economy.
Mary Luz Barrios-Hernández
2014-09-01
Como principal resultado se obtuvo que la formulación que mejoró las propiedades estudiadas del poliducto fue la mezcla de diferentes productos de Polietileno de Baja Densidad postconsumo, para un total de 10 repeticiones con 95% de confianza en la prueba de Kolmogorov-Smirnov, concluyendo que este producto supera las propiedades de resistencia en elongación y flexión y que necesita la optimización de las características para resistencia al impacto modo IZOD. Además, la prueba de calorimetría diferencial de barrido demostró la ausencia de agentes externos en la muestras y el análisis termogravimétrico reveló cambios de temperatura de descomposición semejantes al ducto y mayores a las otras mezclas.
A social work study on the effect of gender and marital status on job satisfaction
Mohammad Reza Iravani
2013-08-01
Full Text Available Job satisfaction plays an essential role on having happy society since people may have better lives when they fully satisfied with their jobs. In this paper, we present an empirical study to investigate the effect of marital status as well as educational background on job satisfaction. The study performs the study among university employees of Khomeinishar branch located in province of Esfahan, Iran and all questions are designed in Likert scale of 1-5 based on Brayfield & Rothes Index of job satisfaction. Using a sample of 100 people, the study first uses Kolmogrov-Smirnov test and verifies that all data are normally distributed (α=5%. The survey also finds that there is no difference between female and male employees in terms of job satisfaction (α=5%. In addition, the study confirms that marital status has no significance on job satisfaction (α=5%.
Power-law distributions in binned empirical data
Virkar, Yogesh
2012-01-01
Many man-made and natural phenomena, including the intensity of earthquakes, population of cities, and size of international wars, are believed to follow power-law distributions. The accurate identification of power-law patterns has significant consequences for developing an understanding of complex systems. However, statistical evidence for or against the power-law hypothesis is complicated by large fluctuations in the empirical distribution's tail, and these are worsened when information is lost from binning the data. We adapt the statistically principled framework for testing the power-law hypothesis, developed by Clauset, Shalizi and Newman, to the case of binned data. This approach includes maximum-likelihood fitting, a hypothesis test based on the Kolmogorov-Smirnov goodness-of-fit statistic and likelihood ratio tests for comparing against alternative explanations. We evaluate the effectiveness of these methods on synthetic binned data with known structure and apply them to twelve real-world binned data...
Nadia Tahernia; Morteza Khodabin; Noorbakhsh Mirzaei; Morteza Eskandari-Ghadi
2012-04-01
By analyzing the seismic catalogue of Iran, the probability distributions of interoccurrence times of earthquakes were investigated for different seismotectonic settings. Several probability distributions were applied to data from major seismotectonic provinces in different cut-off magnitudes and the distribution parameters were determined through the method of maximum likelihood. With the help of goodness-of-fit tests (AIC and BIC criteria based on information theory, Kolmogorov–Smirnov test) and the coefficient of determination, we have found that the gamma statistics and generalized normal statistics coexist in interoccurrence time statistics. Our results imply that a transition from a generalized normal regime to a gamma regime occurs if the threshold magnitude in certain seismotectonic regions (Alborz–Azarbayejan, Zagros, and Central-East Iran) is changed.
The effect of rotation in the neutrino emission from a neutron star
Dvornikov, Maxim
2009-01-01
We study the interaction of neutrinos with matter of a rotating neutron star. First we examine the effect of the rotation on neutrino flavor oscillations and possible existence of bound states of low energy neutrinos in rotating matter. Then we consider the spin-down of a star during its early stages due to the neutrino emission. We find that low energy neutrinos indeed can get trapped, although the effect my not have observable consequences. Concerning flavor oscillations, only for neutrinos emitted with high angular momentum is there a small shift in the value of the electron density for the Mikheyev-Smirnov-Wolfenstein resonance. Finally, the spin-down due to neutrino emission was estimated be to near 10 % and occurs only in the first few seconds of the core formation.
Radial evolution of intermittency of density fluctuations in the fast solar wind
Bruno, R; Primavera, L; Pietropaolo, E; D'Amicis, R; Sorriso-Valvo, L; Carbone, V; Malara, F; Veltri, P
2014-01-01
We study the radial evolution of intermittency of density fluctuations in the fast solar wind. The study is performed analyzing the plasma density measurements provided by Helios 2 in the inner heliosphere between $0.3$ and $0.9$ AU. The analysis is carried out by means of a complete set of diagnostic tools, including the flatness factor at different time scales to estimate intermittency, the Kolmogorov-Smirnov test to estimate the degree of intermittency, and the Fourier transform to estimate the power spectral densities of these fluctuations. Density fluctuations within fast wind are rather intermittent and their level of intermittency, together with the amplitude of intermittent events, decreases with distance from the Sun, at odds with intermittency of both magnetic field and all the other plasma parameters. Furthermore, the intermittent events are strongly correlated, exhibiting temporal clustering. This indicates that the mechanism underlying their generation departs from a time-varying Poisson process....
Essay on the Non-Maxwellian Theories of Electromagnetism
Dvoeglazov, V V
1996-01-01
In the first part of this paper we review several formalisms which give alternative ways for describing the light. They are: the formalism `baroque' and the Majorana-Oppenheimer form of electrodynamics, the Sachs' theory of Elementary Matter, the Dirac-Fock-Podol'sky model, its development by Staruszkiewicz, the Evans-Vigier ${\\bf B}^{(3)}$ field, the theory with an invariant evolution parameter of Horwitz, the analysis of the action-at-a-distance concept, presented recently by Chubykalo and Smirnov-Rueda, and the analysis of the claimed `longitudity' of the antisymmetric tensor field after quantization. The second part is devoted to the discussion of the Weinberg formalism and its recent development by Ahluwalia and myself.
SAR Imagery Segmentation by Statistical Region Growing and Hierarchical Merging
Ushizima, Daniela Mayumi; Carvalho, E.A.; Medeiros, F.N.S.; Martins, C.I.O.; Marques, R.C.P.; Oliveira, I.N.S.
2010-05-22
This paper presents an approach to accomplish synthetic aperture radar (SAR) image segmentation, which are corrupted by speckle noise. Some ordinary segmentation techniques may require speckle filtering previously. Our approach performs radar image segmentation using the original noisy pixels as input data, eliminating preprocessing steps, an advantage over most of the current methods. The algorithm comprises a statistical region growing procedure combined with hierarchical region merging to extract regions of interest from SAR images. The region growing step over-segments the input image to enable region aggregation by employing a combination of the Kolmogorov-Smirnov (KS) test with a hierarchical stepwise optimization (HSWO) algorithm for the process coordination. We have tested and assessed the proposed technique on artificially speckled image and real SAR data containing different types of targets.
Observables of non-equilibrium phase transition
Tomasik, Boris [Univerzita Mateja Bela, FPV, Banska Bystrica (Slovakia); Ceske vysoke uceni technicke v Praze, FJFI, Prague (Czech Republic); Schulc, Martin; Kopecna, Renata [Ceske vysoke uceni technicke v Praze, FJFI, Prague (Czech Republic); Melo, Ivan [Univerzita Mateja Bela, FPV, Banska Bystrica (Slovakia); Zilinska univerzita, Elektrotechnicka fakulta, Zilina (Slovakia)
2016-08-15
A rapidly expanding fireball which undergoes first-order phase transition will supercool and proceed via spinodal decomposition. Hadrons are produced from the individual fragments as well as the left-over matter filling the space between them. Emission from fragments should be visible in rapidity correlations, particularly of protons. In addition to that, even within narrow centrality classes, rapidity distributions will be fluctuating from one event to another in case of fragmentation. This can be identified with the help of the Kolmogorov-Smirnov test. Finally, we present a method which allows to sort events with varying rapidity distributions, in such a way that events with similar rapidity histograms are grouped together. (orig.)
Focusing of plasma flow in an E cross B discharge
Griswold, Martin; Raitses, Yevgeny; Fisch, Nathaniel J.
2010-11-01
ExB discharges can be used to accelerate ions in a quasi-neutral plasma. Large ion fluxes can be produced in this way because there is no space charge limitation, however difficulty in specifying the electric field distribution results in large flow divergence [1]. Recent work has identified new methods to control the flow divergence [2,3]. We present the results of new techniques that are designed to further reduce the divergence. [4pt] [1] A.I. Morozov and V.V. Savelyev, Reviews of Plasma Physics vol. 21, B. B. Kadomtsev and V. D. Shafranov, Eds. New York: Consultants Bureau, 2000. [2] Y. Raitses, L.A. Dorf, A.A. Litvak, and N.J. Fisch, Journal of Applied Physics 88 (2000) 1263. [3] A. Smirnov, Y. Raitses, and N.J. Fisch, IEEE Transactions on Plasma Science 36 (2008) 1998.
Freed, Michael; McKenize, David
2014-01-01
This article compiles and examines a comprehensive coronal magnetic-null-point survey created by potential-field-source-surface (PFSS) modeling and Solar Dynamics Observatory/Atmospheric Imaging Assembly (SDO/AIA) observations. The locations of 582 potential magnetic null points in the corona were predicted from the PFSS model between Carrington Rotations (CR) 2098 (June 2010) and 2139 (July 2013). These locations were manually inspected, using contrast-enhanced SDO/AIA images in 171 angstroms at the east and west solar limb, for structures associated with nulls. A Kolmogorov--Smirnov (K--S) test showed a statistically significant difference between observed and predicted latitudinal distributions of null points. This finding is explored further to show that the observability of null points could be affected by the Sun's asymmetric hemisphere activity. Additional K--S tests show no effect on observability related to eigenvalues associated with the fan and spine structure surrounding null points or to the orie...
Behavioral Risk and Sociodemographic Predictors related to HIV infection and other STI's
Julio Piña
2001-12-01
Full Text Available One thousand thirty-five participants were tested in laboratory in order to detect HIV or other sexually transmitted infection (STI antibodies between 1999 and 2000. The results showedthat: (a most of them attended for the first time the Health Information Center; (b the Elisa test was the most frequently used; (e the majority were women, and (d their age range was from 15 to 44 years old. With regard to risk behaviors, the sexual ones were the most frequent;in relation to addictive behaviors, drug consumption by intravenous way and alcohol use were the most frequent ones. Significan! correlation, confirmed by Kolmogrov-Smirnov test, were found among the sociodemographic variables. When analyzing sexual behavior alone and with alcohol consumption, a significant correlation was found in risk behaviors compared to the other variables.
Takanashi, Naohiro; Yasuda, Naoki; Kuncarayakti, Hanindyo; Konishi, Kohki; Schneider, Donald P; Cinabro, David; Marriner, John
2016-01-01
We have analyzed multi-band light curves of 328 intermediate redshift (0.05 2.5) don't have a broad light curve width and the SNe Ia which appeared in blue host galaxies (u - r < 2.0) have a variety of light curve widths. The Kolmogorov-Smirnov test shows that the colour distribution of SNe Ia appeared in red / blue host galaxies is different (significance level of 99.9%). We also investigate the extinction law of host galaxy dust. As a result, we find the value of Rv derived from SNe Ia with medium light curve width is consistent with the standard Galactic value. On the other hand, the value of Rv derived from SNe Ia that appeared in red host galaxies becomes significantly smaller. These results indicate that there may be two types of SNe Ia with different intrinsic colours, and they are obscured by host galaxy dust with two different properties.
Vestibuloplasty: allograft versus mucosal graft.
Hashemi, H M; Parhiz, A; Ghafari, S
2012-04-01
The aim of the present study was to compare the application of alloderm and mucosal graft for vestibuloplasty. This randomized controlled trial with split mouth design was carried out on 20 edentulous patients. Patients underwent vestibuloplasty surgery with the Clark technique. Half of the prepared bed in each patient was covered with alloderm and the other half with mucosal graft. Vestibule depth (width of fixed tissue) and relapse in the two sides immediately after surgery, and 1, 3 and 6 months after surgery were measured and compared. Statistical analysis was carried out using the Kolmogorov-Smirnov, Student's paired t and Friedman tests. The width of the fixed tissue in the alloderm graft at 1, 3 and 6 month intervals was significantly lower than that in the autograft (Pvestibuloplasty. Copyright Â© 2011 International Association of Oral and Maxillofacial Surgeons. All rights reserved.
Helicity coherence in binary neutron star mergers and nonlinear feedback
Chatelain, Amélie; Volpe, Cristina
2017-02-01
Neutrino flavor conversion studies based on astrophysical environments usually implement neutrino mixings, neutrino interactions with matter, and neutrino self-interactions. In anisotropic media, the most general mean-field treatment includes neutrino mass contributions as well, which introduce a coupling between neutrinos and antineutrinos termed helicity or spin coherence. We discuss resonance conditions for helicity coherence for Dirac and Majorana neutrinos. We explore the role of these mean-field contributions on flavor evolution in the context of a binary neutron star merger remnant. We find that resonance conditions can be satisfied in neutron star merger scenarios while adiabaticity is not sufficient for efficient flavor conversion. We analyze our numerical findings by discussing general conditions to have multiple Mikheyev-Smirnov-Wolfenstein-like resonances, in the presence of nonlinear feedback, in astrophysical environments.
Testing of weak form of efficient market hypothesis: evidence from the Bahrain Bourse
Iqbal Thonse Hawaldar
2017-08-01
Full Text Available Efficient market hypothesis (EMH states that financial markets are “informationally efficient”, implying that current prices fully reflect all available information. The present study aims at testing the weak form of market efficiency of the individual stocks listed on the Bahrain Bourse for the period 2011 to 2015. Weak form of EMH is tested using the Kolmogorov-Smirnov goodness of fit test, run test and autocorrelation test. The K-S test result concludes that in general the stock price movement does not follow random walk. The results of the runs test reveals that share prices of seven companies do not follow random walk. Autocorrelation tests reveal that share prices exhibit low to moderate correlation varying from negative to positive values. As the study shows mixed results, it is difficult to conclude the weak form of efficiency of Bahrain Bourse.
Foundation and generalization of the expansion by regions
Jantzen, Bernd
2011-01-01
The "expansion by regions" is a method of asymptotic expansion developed by Beneke and Smirnov in 1997. It expands the integrand according to the scaling prescriptions of a set of regions and integrates all expanded terms over the whole integration domain. This method has been applied successfully to many complicated loop integrals, but a general proof for its correctness has still been missing. This paper shows how the expansion by regions manages to reproduce the exact result correctly in an expanded form and clarifies the conditions on the choice and completeness of the considered regions. A generalized expression for the full result is presented that involves additional overlap contributions. These extra pieces normally yield scaleless integrals which are consistently set to zero, but they may be needed depending on the choice of the regularization scheme. While the main proofs and formulae are presented in a general and concise form, a large portion of the paper is filled with simple, pedagogical one-loo...
Computer routines for probability distributions, random numbers, and related functions
Kirby, W.H.
1980-01-01
Use of previously codes and tested subroutines simplifies and speeds up program development and testing. This report presents routines that can be used to calculate various probability distributions and other functions of importance in statistical hydrology. The routines are designed as general-purpose Fortran subroutines and functions to be called from user-written main programs. The probability distributions provided include the beta, chisquare, gamma, Gaussian (normal), Pearson Type III (tables and approximation), and Weibull. Also provided are the distributions of the Grubbs-Beck outlier test, Kolmogorov 's and Smirnov 's D, Student 's t, noncentral t (approximate), and Snedecor F tests. Other mathematical functions include the Bessel function I (subzero), gamma and log-gamma functions, error functions and exponential integral. Auxiliary services include sorting and printer plotting. Random number generators for uniform and normal numbers are provided and may be used with some of the above routines to generate numbers from other distributions. (USGS)
Least squares support vector machine for short-term prediction of meteorological time series
Mellit, A.; Pavan, A. Massi; Benghanem, M.
2013-01-01
The prediction of meteorological time series plays very important role in several fields. In this paper, an application of least squares support vector machine (LS-SVM) for short-term prediction of meteorological time series (e.g. solar irradiation, air temperature, relative humidity, wind speed, wind direction and pressure) is presented. In order to check the generalization capability of the LS-SVM approach, a K-fold cross-validation and Kolmogorov-Smirnov test have been carried out. A comparison between LS-SVM and different artificial neural network (ANN) architectures (recurrent neural network, multi-layered perceptron, radial basis function and probabilistic neural network) is presented and discussed. The comparison showed that the LS-SVM produced significantly better results than ANN architectures. It also indicates that LS-SVM provides promising results for short-term prediction of meteorological data.
Using GPU Simulation to Accurately Fit to the Power-Law Distribution
Rappos, Efstratios
2013-01-01
This article describes a methodology for fitting experimental data to the discrete power-law distribution and provides the results of a detailed simulation exercise used to calculate accurate cutoff values used to assess the fit to a power-law distribution when using the maximum likelihood estimation for the exponent of the distribution. Using massively parallel programming computing, we were able to accelerate by a factor of 60 the computational time required for these calculations across a range of parameters and construct a series of detailed tables containing the test values to be used in a Kolmogorov-Smirnov goodness-of-fit test, allowing for an accurate assessment of the power-law fit from empirical data.
Spot cycle reconstruction: an empirical tool - Application to the sunspot cycle
Santos, A R G; Avelino, P P; Campante, T L
2015-01-01
The increasing interest in understanding stellar magnetic activity cycles is a strong motivation for the development of parameterised starspot models which may be constrained observationally. In this work we develop an empirical tool for the stochastic reconstruction of sunspot cycles, using the average solar properties as a reference. The synthetic sunspot cycle is compared with the sunspot data extracted from the National Geophysical Data Center, in particular using the Kolmogorov-Smirnov test. This tool yields synthetic spot group records, including date, area, latitude, longitude, rotation rate of the solar surface at the group's latitude, and an identification number. Comparison of the stochastic reconstructions with the daily sunspot records (from the National Geophysical Data Center) confirms that our empirical model is able to successfully reproduce the main properties of the solar sunspot cycle. As a by-product of this work, we show that the Gnevyshev-Waldmeier rule, which describes the spots' area-l...
An Improved Evaluation of Kolmogorovs Distribution
Luis Carvalho
2015-06-01
Full Text Available We propose a new algorithm for computing extreme probabilities of Kolmogorov's goodness-of-fit measure, Dn . This algorithm is an improved version of the method originally proposed by Wang, Tsang, and Marsaglia (2003 based on a result from Durbin (1973. The new algorithm keeps the same numerical precision of the Wang et al. (2003 method, but is more efficient: it features linear instead of quadratic space complexity and has better time complexity for a common range of input parameters of practical importance. The proposed method is implemented in the R package kolmim, which also includes an improved routine to perform one-sample two-sided exact Kolmogorov-Smirnov tests.
Peebles, P. James E.; Page, Lyman A., Jr.; Partridge, R. Bruce
2009-03-01
1. Introduction; 2. A guide to modern cosmology; 3. Origins of the cosmology of the 1960s; 4. Recollections of the 1960s Dave Hogg, Neville Woolf, George B. Field, Patrick Thaddeus, Donald E. Osterbrock, Yuri Nikolaevich Smirnov, Igor Dmitriyevich Novikov, Andrei Georgievich Doroshkevich, Rashid Alievich Sunyaev, Malcolm S. Longair, Arno Penzias, Robert W. Wilson, Bernard F. Burke, Kenneth C. Turner, P. James E. Peebles, David T. Wilkinson, Peter G. Roll, R. Bruce Partridge, Malcolm S. Longair, John Faulkner, Robert V. Wagoner, Martin Rees, Geoffrey R. Burbidge, Jayant V. Narlikar, David Layzer, Michele Kaufman, Jasper V. Wall, John Shakeshaft, William Welch, Kazimir S. Stankevich, Paul Boynton, Robert A. Stokes, Martin Harwit, Judith L. Pipher, Kandiah Shivanandan, Rainer Weiss, Jer-tsang Yu, Rainer K. Sachs, Arthur M. Wolfe, Joe Silk, George F. R. Ellis, Ronald N. Bracewell, Edward K. Conklin, Stephen Boughn, Karl C. Davis, Paul S. Henry; 5. Cosmology and the CMBR since the 1960s Dick Bond; Appendixes; Glossary; References; Index.
An Overall Perspective of Machine Translation with its Shortcomings
Alireza Akbari
2014-01-01
Full Text Available The petition for language translation has strikingly augmented recently due to cross-cultural communication and exchange of information. In order to communicate well, text should be translated correctly and completely in each field such as legal documents, technical texts, scientific texts, publicity leaflets, and instructional materials. In this connection, Machine translation is of great importance in translation. The term “Machine Translation” was first proposed by George Artsrouni and Smirnov Troyanski (1933 to design a storage design on paper tape. This paper sought to investigate an overall perspective of Machine Translation models and its metrics in detail. Finally, it scrutinized the ins and outs shortcomings of Machine Translation.
John H.R. Burns
2016-12-01
Full Text Available Ten annotated 3D reconstructions of Montipora capitata coral colonies contain x,y,z coordinates for all growth anomaly (GA lesions affecting these corals. The 3D reconstructions are available as Virtual Reality Modeling Language (VRML files, and the GA lesions coordinates are in accompanying text files. The VRML models and GA lesion coordinates can be spatially analyzed using Matlab. Matlab scripts are provided for three spatial statistical procedures in order to assess clustering of the GA lesions across the coral colony surfaces in a 3D framework: Ripley׳s K, Moran׳s I, and the Kolmogorov–Smirnov test. Please see the research article, “Investigating the spatial distribution of Growth Anomalies affecting Montipora capitata corals in a 3-dimensional framework” (J.H.R. Burns, T. Alexandrov, E. Ovchinnikova, R.D. Gates, M. Takabayashi, 2016 [1], for further interpretation and discussion of the data.
Statistical Analysis of I Stokes Parameter of Millisecond Pulsars
Panahi, Hossein; Monadi, Reza
2016-01-01
Using Detrended Fluctuation Analysis (DFA) and box counting method, we test spacial correlation and fractality of Polarization Pulse Profiles (PPPs) of 24 millisecond pulsars (MSPs) which were observed in Parkes Pulsar Timing Array (PPTA) project. DFA analysis indicates that MSPs' PPPs are persistent and the results of box counting method confirm the fractality in the majority of PPPs. A Kolmogorov-Smirnov test indicates that isolated MSPs have more complex PPPs than binary ones. Then we apply our analysis on a random sample of normal pulsars. Comparing the results of our analysis on MSPs and normal pulsars shows that MSPs have more complex PPPs which is resulted from smaller angular half-width of the emission cone and more peaks in MSPs PPPs. On the other hand, high values of Hurst exponent in MSPs confirm compact emission regions in these pulsars.
Consumers’ Attitude Towards Advertising Audit As Marketing Communication Tool: Advertising Ethics
Selma KARABAŞ
2013-06-01
Full Text Available One of the methods used by companies, which want to forest all the arrivals, is use effective advertisements aiming to bring out the properties of the product. Advertisement on consumers’ behaviors is one of the effective methods in creating demand for the product. It is a tool used in order to be distinguished in all respects of competition becoming widespread day by day. This study discusses advertisement ethics especially the ads on TV. Advertisement, by its nature, may have a have a misleading hidden character and cause unfair competition. The approach developed by consumers against such kinds of advertisements has been studied via data obtained by survey method. Consumers’ opinions on advertisement ethics were taken via Likert scale. The methods used for evaluating these surveys are Kolmogorov Smirnov test and One-Sample t-test.
Performances of Shannon’s Entropy Statistic in Assessment of Distribution of Data
Jäntschi Lorentz
2017-08-01
Full Text Available Statistical analysis starts with the assessment of the distribution of experimental data. Different statistics are used to test the null hypothesis (H0 stated as Data follow a certain/specified distribution. In this paper, a new test based on Shannon’s entropy (called Shannon’s entropy statistic, H1 is introduced as goodness-of-fit test. The performance of the Shannon’s entropy statistic was tested on simulated and/or experimental data with uniform and respectively four continuous distributions (as error function, generalized extreme value, lognormal, and normal. The experimental data used in the assessment were properties or activities of active chemical compounds. Five known goodness-of-fit tests namely Anderson-Darling, Kolmogorov-Smirnov, Cramér-von Mises, Kuiper V, and Watson U2 were used to accompany and assess the performances of H1.
a Uqp(u2) Rotor Model for Rotational Bands of Superdeformed Nuclei
Barbier, R.; Meyer, J.; Kibler, M.
A nonrigid rotor model is developed from the two-parameter quantum algebra Uqp(u2). (This model presents the Uqp(u2) symmetry and shall be refered to as the qp-rotor model.) A rotational energy formula as well as a qp-deformation of E2 reduced transition probabilities are derived. The qp-rotor model is applied (through fitting procedures) to twenty rotational bands of superdeformed nuclei in the A~130, 150, and 190 mass regions. Systematic comparisons between the qp-rotor model and the q-rotor model of Raychev, Roussev, and Smirnov, on one hand, and a basic three-parameter model, on the other, are performed on energy spectra, on dynamical moments of inertia and on B(E2) values. The physical significance of the deformation parameters q and p is discussed.
de Carvalho, Fredson Marcio Acris; Gonçalves, Leonardo Cantanhede de Oliveira; Marques, André Augusto Franco; Alves, Vanessa; Bueno, Carlos Eduardo da Silveira; De Martin, Alexandre Sigrist
2016-01-01
Objective: To compare cleaning effectiveness by histological analysis of a reciprocating single-file system with ProTaper rotary instruments during the preparation of curved root canals in extracted teeth. Methods: A total of 40 root canals with curvatures ranging between 20 - 40 degrees were divided into two groups of 20 canals. Canals were prepared to the following apical sizes: Reciproc size 25 (n=20); ProTaper: F2 (n=20). The normal distribution of data was tested by the Kolmogorov-Smirnov test and the values obtained for the test (Mann-Whitney U test, P .05) between the two groups. Conclusion: The application of reciprocating motion during instrumentation did not result in increased debris when compared with continuous rotation motion, even in the apical part of curved canals. Both instruments resulted in debris in the canal lumen, irrespective of the movement kinematics applied. PMID:28217185
Discriminating between Light- and Heavy-Tailed Distributions with Limit Theorem.
Burnecki, Krzysztof; Wylomanska, Agnieszka; Chechkin, Aleksei
2015-01-01
In this paper we propose an algorithm to distinguish between light- and heavy-tailed probability laws underlying random datasets. The idea of the algorithm, which is visual and easy to implement, is to check whether the underlying law belongs to the domain of attraction of the Gaussian or non-Gaussian stable distribution by examining its rate of convergence. The method allows to discriminate between stable and various non-stable distributions. The test allows to differentiate between distributions, which appear the same according to standard Kolmogorov-Smirnov test. In particular, it helps to distinguish between stable and Student's t probability laws as well as between the stable and tempered stable, the cases which are considered in the literature as very cumbersome. Finally, we illustrate the procedure on plasma data to identify cases with so-called L-H transition.
Discriminating between Light- and Heavy-Tailed Distributions with Limit Theorem.
Krzysztof Burnecki
Full Text Available In this paper we propose an algorithm to distinguish between light- and heavy-tailed probability laws underlying random datasets. The idea of the algorithm, which is visual and easy to implement, is to check whether the underlying law belongs to the domain of attraction of the Gaussian or non-Gaussian stable distribution by examining its rate of convergence. The method allows to discriminate between stable and various non-stable distributions. The test allows to differentiate between distributions, which appear the same according to standard Kolmogorov-Smirnov test. In particular, it helps to distinguish between stable and Student's t probability laws as well as between the stable and tempered stable, the cases which are considered in the literature as very cumbersome. Finally, we illustrate the procedure on plasma data to identify cases with so-called L-H transition.
A.N. Kolmogorov's defence of Mendelism
Alan Stark
2011-01-01
Full Text Available In 1939 N.I. Ermolaeva published the results of an experiment which repeated parts of Mendel's classical experiments. On the basis of her experiment she concluded that Mendel's principle that self-pollination of hybrid plants gave rise to segregation proportions 3:1 was false. The great probability theorist A.N. Kolmogorov reviewed Ermolaeva's data using a test, now referred to as Kolmogorov's, or Kolmogorov-Smirnov, test, which he had proposed in 1933. He found, contrary to Ermolaeva, that her results clearly confirmed Mendel's principle. This paper shows that there were methodological flaws in Kolmogorov's statistical analysis and presents a substantially adjusted approach, which confirms his conclusions. Some historical commentary on the Lysenko-era background is given, to illuminate the relationship of the disciplines of genetics and statistics in the struggle against the prevailing politically-correct pseudoscience in the Soviet Union. There is a Brazilian connection through the person of Th. Dobzhansky.
Large extra dimensions, sterile neutrinos and solar neutrino data.
Caldwell, D O; Mohapatra, R N; Yellin, S J
2001-07-23
Solar, atmospheric, and LSND neutrino oscillation results require a light sterile neutrino, nu(B), which can exist in the bulk of extra dimensions. Solar nu(e), confined to the brane, can oscillate in the vacuum to the zero mode of nu(B) and via successive Mikheyev-Smirnov-Wolfenstein transitions to Kaluza-Klein states of nu(B). This new way to fit solar data is provided by both low and intermediate string scale models. From average rates seen in the three types of solar experiments, the Super-Kamiokande spectrum is predicted with 73% probability, but dips characteristic of the 0.06 mm extra dimension should be seen in the SNO spectrum.
Possible explanation of the solar-neutrino puzzle
Bethe, H. A.
1986-01-01
A new derivation of the Mikheyev and Smirnov (1985) mechanism for the conversion of electron neutrinos into mu neutrinos when traversing the sun is presented, and various hypotheses set forth. It is assumed that this process is responsible for the detection of fewer solar neutrinos than expected, with neutrinos below a minimum energy, E(m), being undetectable. E(m) is found to be about 6 MeV, and the difference of the squares of the respective neutrino masses is calculated to be 6 X 10 to the - 5th sq eV. A restriction on the neutrino mixing angle is assumed such that the change of density near the crossing point is adiabatic. It is predicted that no resonance conversion of neutrinos will occur in the dense core of supernovae, but conversion of electron neutrinos to mu neutrinos will occur as they escape outward through a density region around 100.
Four-Neutrino Oscillation Solutions of the Solar Neutrino Problem
Giunti, C; Peña-Garay, C
2000-01-01
We present an analysis of the neutrino oscillation solutions of the solar neutrino problem in the framework of four-neutrino mixing where a sterile neutrino is added to the three standard ones. We perform a fit to the full data set corresponding to the 825-day Super-Kamiokande data sample as well as to Chlorine, GALLEX and SAGE and Kamiokande experiments. In our analysis we use all measured total event rates as well as all Super-Kamiokande data on the zenith angle dependence and the recoil electron energy spectrum. We consider both transitions via the Mikheyev-Smirnov-Wolfenstein (MSW) mechanism as well as oscillations in vacuum (just-so) and find the allowed solutions for different values of the additional mixing angles. This framework permits transitions into active or sterile neutrinos controlled by the additional parameter $\\cos^2(\\vartheta_{23}) \\cos^2(\\vartheta_{24})$ . We discuss the maximum allowed values of this additional mixing parameter for the different solutions.
de Vega, H J; Sanchez, N G
2012-01-01
The Chalonge 15th Paris Cosmology Colloquium 2011 was held on 20-22 July in the historic Paris Observatory's Perrault building, in the Chalonge School spirit combining real cosmological/astrophysical data and hard theory predictive approach connected to them in the Warm Dark Matter Standard Model of the Universe: News and reviews from Herschel, QUIET, Atacama Cosmology Telescope (ACT), South Pole Telescole (SPT), Planck, PIXIE, the JWST, UFFO, KATRIN and MARE experiments; astrophysics, particle and nuclear physics warm dark matter (DM) searches and galactic observations, related theory and simulations, with the aim of synthesis, progress and clarification. Philippe Andre, Peter Biermann, Pasquale Blasi, Daniel Boyanovsky, Carlo Burigana, Hector de Vega, Joanna Dunkley, Gerry Gilmore, Alexander Kashlinsky, Alan Kogut, Anthony Lasenby, John Mather, Norma Sanchez, Alexei Smirnov, Sylvaine Turck-Chieze present here their highlights of the Colloquium. Ayuki Kamada and Sinziana Paduroiu present here their poster hi...
Introducing SummerTime: A package for high-precision computation of sums appearing in DRA1 method
Lee, Roman N.; Mingulov, Kirill T.
2016-06-01
We present the Mathematica package SummerTime for arbitrary-precision computation of sums appearing in the results of DRA method (Lee, 2010). So far these results include the following families of the integrals: 3-loop onshell massless vertices, 3-loop onshell mass operator type integrals, 4-loop QED-type tadpoles, 4-loop massless propagators (Lee et al., 2010; Lee and Smirnov, 2011; Lee et al., 2011, 2012). The package can be used for high-precision numerical computation of the expansion of the integrals from the above families around arbitrary space-time dimension. In addition, this package contains convenient tools for the calculation of multiple zeta values, harmonic polylogarithms and other transcendental numbers expressed in terms of nested sums with factorized summand.
Touati, Sarah; Naylor, Mark; Main, Ian
2016-02-01
The recent spate of mega-earthquakes since 2004 has led to speculation of an underlying change in the global `background' rate of large events. At a regional scale, detecting changes in background rate is also an important practical problem for operational forecasting and risk calculation, for example due to volcanic processes, seismicity induced by fluid injection or withdrawal, or due to redistribution of Coulomb stress after natural large events. Here we examine the general problem of detecting changes in background rate in earthquake catalogues with and without correlated events, for the first time using the Bayes factor as a discriminant for models of varying complexity. First we use synthetic Poisson (purely random) and Epidemic-Type Aftershock Sequence (ETAS) models (which also allow for earthquake triggering) to test the effectiveness of many standard methods of addressing this question. These fall into two classes: those that evaluate the relative likelihood of different models, for example using Information Criteria or the Bayes Factor; and those that evaluate the probability of the observations (including extreme events or clusters of events) under a single null hypothesis, for example by applying the Kolmogorov-Smirnov and `runs' tests, and a variety of Z-score tests. The results demonstrate that the effectiveness among these tests varies widely. Information Criteria worked at least as well as the more computationally expensive Bayes factor method, and the Kolmogorov-Smirnov and runs tests proved to be the relatively ineffective in reliably detecting a change point. We then apply the methods tested to events at different thresholds above magnitude M ≥ 7 in the global earthquake catalogue since 1918, after first declustering the catalogue. This is most effectively done by removing likely correlated events using a much lower magnitude threshold (M ≥ 5), where triggering is much more obvious. We find no strong evidence that the background rate of large
Flávia Porto
2012-09-01
Full Text Available As alterações posturais associadas ao envelhecimento influem diretamente no desempenho de atividades da vida diária. E o exercício físico tem sido utilizado como forma de prevenção aos desgastes causados pelo avanço da idade. Este estudo objetivou comparar o perfil postural no plano sagital de idosas participantes do Estudo Multidimensional dos Idosos de Porto Alegre (EMIPOA e idosas participantes de um programa de exercícios físicos (GEF, através de avaliação com o uso de posturógrafo. Utilizou-se o protocolo de Kendall, Mccreary e Provance (1995 para análise e classificação das posturas. Para o tratamento dos dados, foi utilizada estatística descritiva e teste de Kolmogorov-Smirnov (αAge-associated postural changes directly affect daily-task performance. Exercise has been used in order prevent impairments caused by aging process. This study has aimed to compare the postural profile at the sagittal plane of elderly women participants of the Multidimensional Study of Elderly in Porto Alegre (EMIPOA and elderly women engaged in an exercise program (GEF through posture grad assessment. Posterior image analysis and posture classification was done as described by Kendall, Mccreary e Provance (1995. We used descriptive statistics and the Kolmogorov-Smirnov test (α<0.05 to compare the results of the groups. Both groups presented the kyphosis-lordosis as predominant posture profile. There was no significant difference in prevalence of postural profile between EMIPOA and GEF. Results suggest that the exercise program was not effective to produce postural changes at the sagittal plane for elderly women.
Yuri N. Smirnov
2016-10-01
Full Text Available The article is devoted to a number of methodological and concrete historical questions raised in the monograph by Boris Mironov, “The Russian Empire: From Tradition to Modernity.” The monograph is based on the modernization concept. The variety of methods and techniques borrowed by the author from different scientific disciplines and schools, but which demonstrate their usefulness, provide a reason to call his approach “integrative.” Smirnov shares Mironov’s perspective on the possibility of determining the laws of Russia’s historical path, and on the positive prospects for Russia’s movement upon it. Particular attention is paid to how Mironov examines and interprets the course of Russian colonization, its influence on the internal processes in society in general, and on the fate of specific regions and the ethnic groups. In Mironov’s opinion, the inclusion of new lands in Russia has had generally beneficial effects for the country as a whole and for the people who inhabit it. Smirnov engages in a thought experiment in order to assess in how far Mironov’s conclusions are applicable to the southeast of Russia. The results prove the validity of the conclusions and their applicability to research of other colonized territories. The reviewer recognizes as valid the opinion that the economic reserves of serfdom had not been exhausted by the middle of the 19th century. The liberation of the peasants was caused by many factors, among which moral and cultural reasons were not in the last place. The imperial “Enlightened” bureaucracy became the leader of peasant and other reforms. The article expressed disagreement that the strengthening of the position of the nobility and their power over the peasants in the 18th century was determined by the decisive role of the guard in palace coups. Mironov’s book will stimulate new research and discussions on topical issues of Russian history.
Lincoln Eloi de Araújo
2008-06-01
Full Text Available Esta pesquisa foi realizada na bacia hidrográfica do rio Paraíba com a finalidade de identificar a variação espacial e temporal das chuvas intensas de 1, 2, 3, 4 e 5 dias. Os resultados obtidos mostraram concentração de valores máximos da variação espacial das chuvas intensas no leste da sub-bacia do Baixo Paraíba, Sul da sub-bacia do rio Taperoá e centro-norte da sub-bacia do Alto Paraíba. A análise da variação temporal revelou que os meses de maiores ocorrências de chuvas intensas na bacia em estudo são: janeiro, fevereiro, março e abril. Em seguida, as chuvas intensas foram ajustadas à função distribuição de probabilidade de Gumbel. O teste Kolmogorov-Smirnov foi utilizado para verificar a qualidade desses ajustes.This research was accomplished in the Paraíba river basin for to identify the space and temporal variability of the rains intense of 1, 2, 3, 4 and 5 days. The obtained results showed concentration of maximum values of the space variation of the rains intense in the east of the subbasin of Low Paraíba, south of the subbasin of the river Taperoá and center-north of the subbasin of High Paraíba. The analysis of the temporal variation did reveal that the months of larger occurrences of rains intense in the basin in study are: January, February, March and April. Soon after, the rains intense they were adjusted to the probability distribution function of Gumbel. The test Kolmogorov-Smirnov was used to verify the quality of those fittings.
Statistical methods in interphase cytogenetics: an experimental approach.
Kibbelaar, R E; Kok, F; Dreef, E J; Kleiverda, J K; Cornelisse, C J; Raap, A K; Kluin, P M
1993-10-01
In situ hybridization (ISH) techniques on interphase cells, or interphase cytogenetics, have powerful potential clinical and biological applications, such as detection of minimal residual disease, early relapse, and the study of clonal evolution and expansion in neoplasia. Much attention has been paid to issues related to ISH data acquisition, i.e., the numbers, colors, intensities, and spatial relationships of hybridization signals. The methodology concerning data analysis, which is of prime importance for clinical applications, however, is less well investigated. We have studied the latter for the detection of small monosomic and trisomic cell populations using various mixtures of human female and male cells. With a chromosome X specific probe, the male cells stimulated monosomic subpopulations of 0, 1, 5, 10, 50, 90, 95, 99, and 100%. Analogously, when a (7 + Y) specific probe combination was used, containing a mixture of chromosome No. 7 and Y-specific DNA, the male cells simulated trisomic cell populations. Probes specific for chromosomes Nos. 1, 7, 8, and 9 were used for estimation of ISH artifacts. Three statistical tests, the Kolmogorov-Smirnov test, the multiple-proportion test, and the z'-max test, were applied to the empirical data using the control data as a reference for ISH artifacts. The Kolmogorov-Smirnov test was found to be inferior for discrimination of small monosomic or trisomic cell populations. The other two tests showed that when 400 cells were evaluated, and using selected control probes, monosomy X could be detected at a frequency of 5% aberrant cells, and trisomy 7 + Y at a frequency of 1%.(ABSTRACT TRUNCATED AT 250 WORDS)
Fidan ALAKUŞ-SABUNCUOĞLU
2016-10-01
Full Text Available Purpose: This in vitro study compared the effect of five different techniques on the surface roughness of feldspathic porcelain. Materials and Methods: 100 feldspathic porcelain disk samples mounted in acrylic resin blocks were divided into five groups (n=20 according to type of surface treatment: I, hydrofluoric acid (HFA; II, Deglazed surface porcelain treated with Neodymium:yttrium- aluminum-garnet (Nd:YAG laser; III, Deglazed porcelain surface treated with Erbium:yttrium-aluminum-garnet (Er:YAG laser; IV, Glazed porcelain surface treated with Neodymium:yttrium-aluminum-garnet (Nd:YAG laser, V; Glazed porcelain surface treated with Erbium:yttrium-aluminum-garnet (Er:YAG laser. The surface roughness of porcelain was measured with a noncontact optical profilometer. For each porcelain sample, two readings were taken across the sample, before porcelain surface treatment (T1 and after porcelain surface treatment (T2. The roughness parameter analyzed was the average roughness (Ra. Statistical analysis was performed using Kolmogorov–Smirnov and Wilcoxon signed rank test. Results: Mean Ra values for each group were as follows: I, 12.64±073; II, 11.91±0.74; III, 11.76±0.59; IV, 3.82 ±0.65; V, 2.77±0.57. For all porcelain groups, the lowest Ra values were observed in Group V. The highest Ra values were observed for Group I, with a significant difference with the other groups. Kolmogorov–Smirnov showed significant differences among groups (p<0.001. Conclusion: Surface treatment of porcelain with HFA resulted in significantly higher Ra than laser groups. Both Er:YAG laser or Nd:YAG laser on the deglaze porcelain surface can be recommended as viable treatment alternatives to acid etching.
Statistical analyses support power law distributions found in neuronal avalanches.
Andreas Klaus
Full Text Available The size distribution of neuronal avalanches in cortical networks has been reported to follow a power law distribution with exponent close to -1.5, which is a reflection of long-range spatial correlations in spontaneous neuronal activity. However, identifying power law scaling in empirical data can be difficult and sometimes controversial. In the present study, we tested the power law hypothesis for neuronal avalanches by using more stringent statistical analyses. In particular, we performed the following steps: (i analysis of finite-size scaling to identify scale-free dynamics in neuronal avalanches, (ii model parameter estimation to determine the specific exponent of the power law, and (iii comparison of the power law to alternative model distributions. Consistent with critical state dynamics, avalanche size distributions exhibited robust scaling behavior in which the maximum avalanche size was limited only by the spatial extent of sampling ("finite size" effect. This scale-free dynamics suggests the power law as a model for the distribution of avalanche sizes. Using both the Kolmogorov-Smirnov statistic and a maximum likelihood approach, we found the slope to be close to -1.5, which is in line with previous reports. Finally, the power law model for neuronal avalanches was compared to the exponential and to various heavy-tail distributions based on the Kolmogorov-Smirnov distance and by using a log-likelihood ratio test. Both the power law distribution without and with exponential cut-off provided significantly better fits to the cluster size distributions in neuronal avalanches than the exponential, the lognormal and the gamma distribution. In summary, our findings strongly support the power law scaling in neuronal avalanches, providing further evidence for critical state dynamics in superficial layers of cortex.
Can power-law scaling and neuronal avalanches arise from stochastic dynamics?
Jonathan Touboul
Full Text Available The presence of self-organized criticality in biology is often evidenced by a power-law scaling of event size distributions, which can be measured by linear regression on logarithmic axes. We show here that such a procedure does not necessarily mean that the system exhibits self-organized criticality. We first provide an analysis of multisite local field potential (LFP recordings of brain activity and show that event size distributions defined as negative LFP peaks can be close to power-law distributions. However, this result is not robust to change in detection threshold, or when tested using more rigorous statistical analyses such as the Kolmogorov-Smirnov test. Similar power-law scaling is observed for surrogate signals, suggesting that power-law scaling may be a generic property of thresholded stochastic processes. We next investigate this problem analytically, and show that, indeed, stochastic processes can produce spurious power-law scaling without the presence of underlying self-organized criticality. However, this power-law is only apparent in logarithmic representations, and does not survive more rigorous analysis such as the Kolmogorov-Smirnov test. The same analysis was also performed on an artificial network known to display self-organized criticality. In this case, both the graphical representations and the rigorous statistical analysis reveal with no ambiguity that the avalanche size is distributed as a power-law. We conclude that logarithmic representations can lead to spurious power-law scaling induced by the stochastic nature of the phenomenon. This apparent power-law scaling does not constitute a proof of self-organized criticality, which should be demonstrated by more stringent statistical tests.
Probing the mechanical properties of dental porcelain through nanoindentation
Manda, Marianthi; Moschakis, Nikolaos; Konstantinidis, Avraam; Christophilos, Demetrios; Papadopoulou, Lambrini; Koidis, Petros; Aifantis, Elias
2012-11-01
The purpose of this short communication is to report on some micro/nanoscale aspects of the mechanical behavior of dental porcelain. Specimens were characterized by micro-Raman spectroscopy and scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS). Massive nanoindentation experiments on the surface of the specimens were performed, and typical load-displacement or load-depth (P-h) curves were obtained, which in turn were used to determine the Young modulus (E) and nanoindentation hardness (n-H), based on the Oliver-Pharr method [1]. Statistical analyses were carried out to determine the Spearman’s rank correlation coefficient (Spearman’s ρ), along with non-parametric linear regression analysis by employing Kolmogorov-Smirnov and Two-Step Cluster tests. Densification due to grain boundary diffusion and open-pore elimination was revealed by SEM. EDS analysis indicated a leucite-dispersed silicate glass matrix, as well as its contamination by traces of other minerals. Raman spectroscopy supported the EDS assignments. The P-h curves suggested that inelastic deformation and material flow increases at larger depths. Spearman’s ρ value showed strong dependence of E and n-H on h, indicating the occurrence of a size effect. The logarithmic data of E and n-H as functions of h were fitted by using linear regression analysis. The data did not obey a normal distribution (as the Kolmogorov-Smirnov test showed) due to the chemical heterogeneity involved. The Two-Step Cluster analysis indicated clustering in four groups associated with the chemical heterogeneity of the surface. Similar works using nanoindentation to determine the mechanical properties of dental materials can be found, for example, in [2, 3]. Corresponding methods for extracting the values of E and n-H from P-h experimental curves can be found, for example, in [4-6].
Lenamar Fiorese Vieira
2013-01-01
Full Text Available Este estudo teve como objetivo analisar a síndrome de "burnout" e as estratégias de "coping" de jogadores de vôlei de praia. Participaram 93 atletas, das categorias sub-21 e "open" do circuito brasileiro de vôlei de praia. Como instrumentos foram utilizados uma ficha com dados de identificação, Questionário de "Burnout" para Atletas e Inventário Atlético das Estratégias de "Coping". Para análise dos dados utilizou-se teste de Kolmogorov-Smirnov, coeficiente Alpha de Cronbach, teste 'U' de Mann-Whitney, teste de Kruskal-Wallis e coeficiente de correlação de Spearman, adotando p This study aimed to analyze burnout syndrome and coping strategies of beach volleyball players. Ninety-three athletes participated, being one group of under-21 age and another group of adult category. The both group are composed by players of the Brazilian beach volleyball championship. The instruments used were a form with data identification, Burnout Questionnaire for Athletes and Athletic Inventory of Coping Strategies. For data analysis, the Kolmogorov-Smirnov test, Cronbach's alpha coefficient, 'U' Mann-Whitney test, Kruskal-Wallis test and Spearman correlation coefficient, were used, considering p < 0.05. There was a significant and negative correlation between the dimensions of burnout and coping strategies. For the dimensions of burnout, just ranking obtained significant difference, while for coping strategies, gender, category, ranking and practice time showed significant differences. It was concluded that the higher burnout, fewer beach volleyball athletes use coping strategies.
Statistical analyses support power law distributions found in neuronal avalanches.
Klaus, Andreas; Yu, Shan; Plenz, Dietmar
2011-01-01
The size distribution of neuronal avalanches in cortical networks has been reported to follow a power law distribution with exponent close to -1.5, which is a reflection of long-range spatial correlations in spontaneous neuronal activity. However, identifying power law scaling in empirical data can be difficult and sometimes controversial. In the present study, we tested the power law hypothesis for neuronal avalanches by using more stringent statistical analyses. In particular, we performed the following steps: (i) analysis of finite-size scaling to identify scale-free dynamics in neuronal avalanches, (ii) model parameter estimation to determine the specific exponent of the power law, and (iii) comparison of the power law to alternative model distributions. Consistent with critical state dynamics, avalanche size distributions exhibited robust scaling behavior in which the maximum avalanche size was limited only by the spatial extent of sampling ("finite size" effect). This scale-free dynamics suggests the power law as a model for the distribution of avalanche sizes. Using both the Kolmogorov-Smirnov statistic and a maximum likelihood approach, we found the slope to be close to -1.5, which is in line with previous reports. Finally, the power law model for neuronal avalanches was compared to the exponential and to various heavy-tail distributions based on the Kolmogorov-Smirnov distance and by using a log-likelihood ratio test. Both the power law distribution without and with exponential cut-off provided significantly better fits to the cluster size distributions in neuronal avalanches than the exponential, the lognormal and the gamma distribution. In summary, our findings strongly support the power law scaling in neuronal avalanches, providing further evidence for critical state dynamics in superficial layers of cortex.
Kastrin, Andrej; Rindflesch, Thomas C; Hristovski, Dimitar
2014-01-01
Concept associations can be represented by a network that consists of a set of nodes representing concepts and a set of edges representing their relationships. Complex networks exhibit some common topological features including small diameter, high degree of clustering, power-law degree distribution, and modularity. We investigated the topological properties of a network constructed from co-occurrences between MeSH descriptors in the MEDLINE database. We conducted the analysis on two networks, one constructed from all MeSH descriptors and another using only major descriptors. Network reduction was performed using the Pearson's chi-square test for independence. To characterize topological properties of the network we adopted some specific measures, including diameter, average path length, clustering coefficient, and degree distribution. For the full MeSH network the average path length was 1.95 with a diameter of three edges and clustering coefficient of 0.26. The Kolmogorov-Smirnov test rejects the power law as a plausible model for degree distribution. For the major MeSH network the average path length was 2.63 edges with a diameter of seven edges and clustering coefficient of 0.15. The Kolmogorov-Smirnov test failed to reject the power law as a plausible model. The power-law exponent was 5.07. In both networks it was evident that nodes with a lower degree exhibit higher clustering than those with a higher degree. After simulated attack, where we removed 10% of nodes with the highest degrees, the giant component of each of the two networks contains about 90% of all nodes. Because of small average path length and high degree of clustering the MeSH network is small-world. A power-law distribution is not a plausible model for the degree distribution. The network is highly modular, highly resistant to targeted and random attack and with minimal dissortativity.
A. Calzado
2013-04-01
Full Text Available Aim of study: The aim of this work was to model diameter distributions of Quercus suber stands. The ultimate goal was to construct models enabling the development of more affordable forest inventory methods. This is the first study of this type on cork oak forests in the area.Area of study: The area of study is “Los Alcornocales” Natural Park (Cádiz-Málaga, Spain.Material and methods: The diameter distributions of 100 permanent plots were modelled with the two-parameter Weibull function. Distribution parameters were fitted with the non-linear regression, maximum likelihood, moment and percentile-based methods. Goodness of fit with the different methods was compared in terms of number of plots rejected by the Kolmogorov-Smirnov test, bias, mean square error and mean absolute error. The scale and shape parameters in the Weibull function were related to the stand variables by using the parameter prediction model.Main results: The best fitting was obtained with the non-linear regression approach, using as initial values those obtained by maximum likelihood method, the percentage of rejections by the Kolmogorov-Smirnov test was 2% of the total number of cases. The scale parameter (b was successfully modelled in terms of the quadratic mean diameter under cork (R2 adj = 0.99. The shape parameter (c was modelled by using maximum diameter, minimum diameter and plot elevation (R2 adj = 0.40.Research highlights: The proposed model diameter distribution can be a highly useful tool for the inventorying and management of cork oak forests.Key words: maximum likelihood method; moment method; non linear regression approach; parameter prediction model; percentile method; scale parameter; shape parameter.
Rubén Urbizagástegui Alvarado
2005-06-01
Full Text Available Describe la naturaleza de la distribución del poder inverso generalizado por el método de los mínimos cuadrados de la regresión lineal. Se describe paso a paso la forma de aplicación del modelo a los datos estudiados por Oliveira sobre la literatura de jaca. El modelo del poder inverso generalizado por el método de los mínimos cuadrados y la prueba Kolmogorov-Smirnov fueron usados para evaluar el ajuste de los datos observados y esperados. Con n = - 2.14, C = 0.648515 y al 0.01 nivel de significación, se verificó que el valor crítico fue de 0.202177 con un desvío máximo de 0.151285, por lo tanto, esta literatura se ajusta al modelo de Lotka.The nature of the generalized inverse power distribution by the minimum least squared method is described. A step-by-step application process of this distribution model is offered. To illustrate the application process data collected and studied by Oliveira on Jackfruit literature was used. The generalized inverse power distribution by the minimum least squared method and the Kolmogorov-Smirnov test was used to evaluate the fit of the observed and expected data. With n = - 2.14 and C = 0.648715 at 0,01 level of significance, a critical value of 0.202177 with a maximum deviation of 0.151285, was observed. Therefore, the literature fits Lotka's model.
Okeniyi, Joshua Olusegun; Nwadialo, Christopher Chukwuweike; Olu-Steven, Folusho Emmanuel; Ebinne, Samaru Smart; Coker, Taiwo Ebenezer; Okeniyi, Elizabeth Toyin; Ogbiye, Adebanji Samuel; Durotoye, Taiwo Omowunmi; Badmus, Emmanuel Omotunde Oluwasogo
2017-02-01
This paper investigates C3H7NO2S (Cysteine) effect on the inhibition of reinforcing steel corrosion in concrete immersed in 0.5 M H2SO4, for simulating industrial/microbial environment. Different C3H7NO2S concentrations were admixed, in duplicates, in steel-reinforced concrete samples that were partially immersed in the acidic sulphate environment. Electrochemical monitoring techniques of open circuit potential, as per ASTM C876-91 R99, and corrosion rate, by linear polarization resistance, were then employed for studying anticorrosion effect in steel-reinforced concrete samples by the organic hydrocarbon admixture. Analyses of electrochemical test-data followed ASTM G16-95 R04 prescriptions including probability distribution modeling with significant testing by Kolmogorov-Smirnov and student's t-tests statistics. Results established that all datasets of corrosion potential distributed like the Normal, the Gumbel and the Weibull distributions but that only the Weibull model described all the corrosion rate datasets in the study, as per the Kolmogorov-Smirnov test-statistics. Results of the student's t-test showed that differences of corrosion test-data between duplicated samples with the same C3H7NO2S concentrations were not statistically significant. These results indicated that 0.06878 M C3H7NO2S exhibited optimal inhibition efficiency η = 90.52±1.29% on reinforcing steel corrosion in the concrete samples immersed in 0.5 M H2SO4, simulating industrial/microbial service-environment.
E. Sgnaolin
2012-07-01
Full Text Available Objective: Fibromyalgia syndrome (FMs is a chronic widespread pain condition that can negatively impact on all aspects of patient’s life. The purpose of this study was: first, to evaluate illness perception (IP, quality of life (QoL and affective-emotive variables (EAV of patients with FM; and second, to compare these variables to different pain conditions. Methods: Consecutive 34 women (mean age 47.4±8.3 years affected by FM were enrolled for the study from December 2009 to May 2011. IP was evaluated by means of the Revised Illness Perception Questionnaire, QoL through Nottigham Health Profile and EAV through the Beck Depression Inventory. Scores were compared with rheumatoid arthritis (RA (n=20; mean age 53±12.8 years and low back pain (LBP (n=20; 51.3±7.8 years groups. Results: FM patients scored higher than RA and LBP groups on IP (Identity scale mean: FM=8.8±2.3, AR=5.5±3.3, LBP=4.1±2.9; Kruskal-Wallis=24.42. Moreover FM patients show higher EAV (mean FM=21±9.6, AR=8.9±5.6, LBP=14.9±6.5; Kolmogorov-Smirnov Z=2.17 and QoL (Pain scale mean: FM=74.2±24.1; AR=35.7±19.9; LBP=56.5±20.4; Kolmogorov-Smirnov Z=2.27; Energy scale mean: FM=86.2±28.5; AR=46.8±35.4; LBP=61.6 ±63.7; Kolmogorov-Smirnov Z=1.98 than RA group. Conclusions: Our study highlighted dysfunctional IP, low QoL, high EAV scores in FM patients and the significant relations between these variables. Research results provided support for relevance of a multidisciplinary approach to the management of FM, including psychological interventions, according to a biopsychosocial perspective.Objective: Fibromyalgia syndrome (FMs is a chronic widespread pain condition that can negatively impact on all aspects of patient’s life. The purposes of this study were: i to evaluate illness perception (IP, quality of life (QoL and affective-emotive variables (EAV of patients with FM; and ii to compare these variables to different pain conditions. Methods: Consecutive 34 women (mean age
Solange Mattos Melegario
2006-06-01
Full Text Available Este estudo teve por objetivo investigar se existem diferenças no grau de flexibilidade nas fases do ciclo menstrual de mulheres adultas jovens praticantes de ginástica de academia. A amostra intencional foi composta de 20 mulheres, com idade de 18 a 35 anos (25,8 ± 6,06, com o ciclo menstrual regular (28 até 32 dias e que não faziam uso de anticoncepcional oral. Dados referentes ao ciclo menstrual e atividade física habitual foram obtidos através da aplicação de um questionário. A flexibilidade foi aferida através da goniometria, utilizando-se oito movimentos, em três fases do ciclo menstrual. Os sujeitos foram submetidos a um teste hormonal, em que foram verificadas as taxas de estrona, estradiol e progesterona. O tratamento estatístico foi feito através de análise descritiva e inferencial (teste de Kolmogorov-Smirnov e ANOVA. Os resultados encontrados demonstraram que não houve diferença significativa (p Este estudio ha tenido por objetivo investigar si existen diferencias en el grado de flexibilidad en las fases del ciclo menstrual de mujeres adultas jóvenes practicantes de gimnasia de academia. La muestra intencional fue compuesta de 20 mujeres, con edades entre 18 a 35 años (25,8 ± 6,06, con ciclo menstrual regular (28 a 32 días y que no hacían uso de anticonceptivo oral. Datos referentes al ciclo menstrual y actividad física habitual fueron obtenidos a través de una encuesta. La flexibilidad fue medida a través de la goniometría, utilizándose ocho movimientos, en tres fases del ciclo menstrual. Los individuos fueron sometidos a un test hormonal, en donde se verificaron la tasa de estrona, estradiol y progesterona. El tratamiento estadístico fue hecho a través del análisis descriptivo y de inferencia (test de Kolmogorov-Smirnov y ANOVA. Los resultados encontrados mostraron que no hubo diferencia significativa (p This study aims to verify if there are differences in the degree of flexibility in the phases of
Saulo Jorge Téo
2011-09-01
Full Text Available
O objetivo deste trabalho foi ajustar as funções de densidade probabilísticas (fdp’s Normal e S_{B} de Johnson, para descrever as mudanças, com a idade, na estrutura diamétrica de povoamentos de Pinus taeda L., na região de Caçador, SC. Os dados utilizados foram provenientes de parcelas temporárias e permanentes, com idades variando de 5 a 11,9 anos, agrupadas em classes com intervalos de 1 ano. Foram ajustadas as fdp’s e obtidas as estimativas dos parâmetros de assimetria e curtose. Por meio do teste de Kolmogorov-Smirnov, verificou-se que, para as idades de 5 a 7,9 anos, as fdp’s Normal e S_{B} de Johnson não apresentaram aderência satisfatória. As fdp’s S_{B} de Johnson e Normal apresentaram melhor aderência para as idades de 8 a 9,9 e 10 a 11,9 anos, respectivamente. Utilizando a fdp Normal para analisar a dinâmica da distribuição diamétrica, verificou-se um deslocamento das curvas de distribuição diamétrica para a direita, um “achatamento” e um “alargamento” destas curvas ao longo dos anos. A assimetria foi negativa para todas as idades, exceto para as idades de 8 a 8,9 anos. A curtose foi leptocúrtica para todas as idades, e platicúrtica para as idades de 8 a 8,9 anos.
doi: 10.4336/2011.pfb.31.67.183
The objective of this work was to fit the probability density functions Normal and S_{B}, to describe the changes, with age, in the diameter distribution of loblolly pine (Pinus taeda stands, in the region of Caçador, Santa Catarina State, Brazil. The data came from permanent and temporary plots, with ages ranging from 5 to 11,9, grouped in age classes with intervals of 1 year. The probability density functions were fitted and, the Kolmogorov-Smirnov test and the parameters of skewness and kurtosis were calculated. Basing on Kolmogorov-Smirnov test it was verified that, for ages from 5 to 7.9 years old, the Normal and S_{B} functions
Grazielle Viola Arronqui
2011-01-01
Full Text Available OBJETIVO: Conhecer a percepção de graduandos de Enfermagem sobre sua qualidade de vida. MÉTODOS: Estudo transversal realizado na Escola Paulista de Enfermagem da Universidade Federal do Estado de São Paulo/Brasil. Amostra constituída de 178 graduandos. Para a obtenção dos dados, utilizou-se o instrumento genérico WHOQOL-bref. Os grupos de interesse foram submetidos aos testes de normalidade de Kolmogorov-Smirnov e o t de Students. RESULTADOS: Os graduandos consideravam sua qualidade de vida boa e estavam satisfeitos com sua saúde. Na análise, o escore médio encontrou resultado maior para o domínio das relações sociais e o menor para o físico. Os alunos da primeira série, apresentou qualidade de vida menor do que os da segunda em todos os domínios e estes maior do que os da terceira no domínio físico e maior que a quarta no domínio meio ambiente. CONCLUSÃO: os graduandos merecem atenção nos aspectos da qualidade de vida sobretudo nos aspectos físicos e os alunos da primeira série devem ser acompanhados.OBJETIVO: Conocer la percepción de graduandos de Enfermería sobre su calidad de vida. MÉTODOS: Estudio transversal realizado en la Escuela Paulista de Enfermería de la Universidad Federal del Estado de Sao Paulo/Brasil. Muestra constituída por 178 graduandos. Para la obtención de los datos, se utilizó el instrumento genérico WHOQOL-bref. Los grupos de interés fueron sometidos a los test de normalidad de Kolmogorov-Smirnov y el t de Students. RESULTADOS: Los graduandos consideraban su calidad de vida bueno y estaban satisfechos con su salud. En el análisis, el escor medio encontró el mayor resultado para el dominio de las relaciones sociales y el menor para el físico. Los alumnos de la primera serie, presentaron calidad de vida menor que los de la segunda en todos los dominios y éstos mayor que los de la tercera en el dominio físico y mayor que la cuarta en el dominio medio ambiente. CONCLUSIÓN: los graduandos
Vera Lúcia Conceição de Gouveia Santos
2008-06-01
Full Text Available O estudo objetivou analisar o custo mensal do uso de dispositivos e adjuvantes por estomizados. Trata-se de uma pesquisa retrospectiva, realizada em dois Ambulatórios de Especialidades, em São Paulo. Os dados foram coletados em 635 prontuários de pacientes estomizados adultos, atendidos em junho de 2005. Os valores dos dispositivos e adjuvantes foram obtidos em registros eletrônicos e publicações oficiais da Secretaria de Estado da Saúde de São Paulo e seus resultados foram submetidos aos testes de Kolmogorov-Smirnov, Mann-Whitney, Kruskal-Wallis, Bonferroni e Spearman. A maioria dos indivíduos era do sexo feminino (51%, idade > 60anos, com colostomia provisória (64,5%. O custo individual mensal médio foi R$ 137,72, maior para os urostomizados, com estomas definitivos, com neoplasias de vias urinárias e atendidos no serviço que possui enfermeiro especialista. Houve correlação estatisticamente significativa e positiva entre o custo mensal e o tempo de estomia. Este estudo contribuiu para a avaliação do custo do estomizado no Estado de São Paulo.En este estudio se tuvo como objetivo analizar el costo mensual del uso de dispositivos y adjuvantes por ostomizados. Se trata de una investigación retrospectiva, realizada en dos Consultorios externos de Especialidades, en Sao Paulo. Los datos fueron recolectados en 635 historias clínicas de pacientes adultos ostomizados, atendidos en junio del 2005. Los valores de los dispositivos y adjuvantes fueron obtenidos en registros electrónicos y publicaciones oficiales de la Secretaría de Estado de la Salud de Sao Paulo y sus resultados fueron sometidos a los tests de Kolmogorov-Smirnov, Mann-Whitney, Kruskal-Wallis, Bonferroni y Spearman. La mayoría de los individuos era del sexo femenino (51%, edad >60 años, con colostomía provisional (64,5%. El costo individual mensual promedio fue de R$ 137,72, mayor para los urostomizados, con esto mas definitivos, con neoplasias de vías urinarias
Mengkudu (Morinda citrifolia Linn. gel affect on post-extraction fibroblast acceleration
Christian Khoswanto
2010-03-01
Full Text Available Background: Tooth extraction is one of treatment frequently done by dentists in clinics, hospital, and even private practices. One thing that is needed to be observed after the treatment is the speed of wound recovery process. Mengkudu is commonly used as medicinal treatments, some of them to heal wounds, but there had never been research of the use of mengkudu fruit on wound recovery after tooth extraction. Purpose: The aim of this study was to investigate the effect of mengkudu gel in accelerating the escalation of fibroblast post tooth extraction on Dawley rats. Method: This study was used post test only control group design. Thirty male Dawley rats weigh between 250-300 grams, 3 months of age are being used. Tooth extraction is being done on lower left incisor. The 30 rats are divided into three groups, there are mengkudu (Morinda citrifolia Linn. gel, poviclone iodine, and control group. The data were analyzed statistically using One-Way ANOVA and LSD. Result: The result of every tested group with Kolmogorof-Smirnov test showed p > 0.05. Examination showed there was significant difference in fibroblast amount between the group with mengkudu gel and two other groups (p < 0.05. Conclusion: The application of mengkudu gel can accelerate the escalation of fibroblast after the tooth extraction on Dawley rats.Latar Belakang: Ekstraksi gigi merupakan perawatan yang sering dilakukan oleh dokter gigi baik di klinik, rumah sakit, dan praktekpribadi. Satu hal yang perlu diperhatikan setelahpencabutan gigi adalah kecepatanpenyembuhan luka bekas cabut. Mengkudu merupakan bahan yang sering digunakan untukpengobatan, salah satu diantaranya adalah untukpenyembuhan luka, namunpenelitian untuk kesembuhan luka pasca cabut gigi yang menggunakan mengkudu belum pernah dilakukan sebelumnya. Tujuan: Tujuanpenelitian ini untuk mengetahui efek gel mengkudu dalam mempercepat peningkatan jumlah fibroblas setelah pencabutan gigi tikus Dawley. Metode: Penelitian ini
Fabíola Maria Gomes de Melo
2007-09-01
Full Text Available OBJETIVO: identificar a modificação da aeração nasal após a realização de manobras de massagem e limpeza nasal. MÉTODOS: vinte crianças na faixa etária de quatro a onze anos com diagnóstico de rinite alérgica foram submetidas à avaliação da aeração nasal com o auxílio do espelho milimetrado de Altmann. Inicialmente houve a marcação do ar expirado na placa metálica, posteriormente foram realizadas manobras de massagem e limpeza nasal para retirada da secreção, havendo uma nova marcação para a comparação dos resultados. Foi aplicado o teste Kolmogorov-Smirnov para observar a suposição de normalidade dos dados e o teste t-student para amostras pareadas, sendo todas as conclusões tomadas ao nível de significância de 5%. RESULTADOS: pode-se observar que as médias obtidas da quantificação da aeração nasal após as manipulações e limpeza na região foram significativas pPURPOSE: to identify the modification of nasal aeration after the accomplishment of maneuvers of massage and nasal cleanness. METHODS: twenty children aging from four to eleven years with diagnosis of allergic rhinitis have been submitted to evaluation of nasal aeration with the Altmann's milimetric mirror. Initially, we was marked the air exhaled on the metallic plate, afterwards we made a massage and nasal cleanness for removing of the secretion, having a new benchmark to compare the results. Kolmogorov-Smirnov test was applied to test the assumption of normality for the data and t-student test for paired samples. All conclusions were taken under 5% significance. RESULTS: it was observed that the obtained averages of the nasal aeration after the manipulations and cleanness in the region were significant: p<0,001. CONCLUSION: from the results obtained in this research it was possible to observe a significant increase in the nasal aeration after the massage and nasal cleanness.
Ying Chen
2016-04-01
Full Text Available Abstract Background Regular and timely monitoring of blood glucose (BG levels in hospitalized patients with diabetes mellitus is crucial to optimizing inpatient glycaemic control. However, methods to quantify timeliness as a measurement of quality of care are lacking. We propose an analytical approach that utilizes BG measurements from electronic records to assess adherence to an inpatient BG monitoring protocol in hospital wards. Methods We applied our proposed analytical approach to electronic records obtained from 24 non-critical care wards in November and December 2013 from a tertiary care hospital in Singapore. We applied distributional analytics to evaluate daily adherence to BG monitoring timings. A one-sample Kolmogorov-Smirnov (1S-KS test was performed to test daily BG timings against non-adherence represented by the uniform distribution. This test was performed among wards with high power, determined through simulation. The 1S-KS test was coupled with visualization via the cumulative distribution function (cdf plot and a two-sample Kolmogorov-Smirnov (2S-KS test, enabling comparison of the BG timing distributions between two consecutive days. We also applied mixture modelling to identify the key features in daily BG timings. Results We found that 11 out of the 24 wards had high power. Among these wards, 1S-KS test with cdf plots indicated adherence to BG monitoring protocols. Integrating both 1S-KS and 2S-KS information within a moving window consisting of two consecutive days did not suggest frequent potential change from or towards non-adherence to protocol. From mixture modelling among wards with high power, we consistently identified four components with high concentration of BG measurements taken before mealtimes and around bedtime. This agnostic analysis provided additional evidence that the wards were adherent to BG monitoring protocols. Conclusions We demonstrated the utility of our proposed analytical approach as a monitoring
Hidayati Hidayati
2012-09-01
Full Text Available AbstrakGingivitis kehamilan adalah gingivitis yang terjadi pada wanita hamil. Gingivitisdisebabkan oleh iritasi bakteri yang ada dalam plak dan kalkulus. Plak dan kalkulus merupakanindikator kebersihan mulut yang buruk. Selama kehamilan, hormon estrogen dan progesteroneakan mengalami peningkatan yang menyebabkan jaringan gingiva merespon secara berlebihanterhadap iritasi lokal. Penelitian ini bertujuan untuk mengetahui tingkat kebersihan rongga mulutdan status gingivitis ibu hamil serta hubungan antara tingkat kebersihan rongga mulut denganstatus gingivitis pada ibu hamil. Jenis penelitian ini adalah anayitic correlation denganpendekatan cross sectional, sampel diambil menggunakanteknik accidental sampling dengan ujistatistik Kolmogorov-Smirnov. Subjek adalah 70 wanita hamil di Puskesmas wilayah kerjaAndalas Padang Timur. Hasil penelitian menunjukkan tingkat kebersihan mulut ibu hamil diwilayah kerja Puskesmas Andalas Kecamatan Padang Timur sebagian besar adalah sedang(57,1% dan sebagian besar ibu hamil yang diperiksa mengalami gingivitis sedang (70%. Semuaibu yang diperiksa mengalami gingivitis, baik itu ibu dengan tingkat kebersihan mulut yang baik,sedang maupun buruk. Disarankan kepada ibu hamil untuk selalu menjaga kebersihan dankesehatan rongga mulutnya.Kata Kunci : gingivitis kehamilan, estrogen, progesteron, tingkat kebersihan rongga mulut,gingivitisAbstractPregnancy gingivitis is gingivitis that occurs in pregnant women. Gingivitis caused by theirritation of bacteria in plaque and calculus. Plaque and calculus is indicator of poor oral hygiene.During pregnancy, estrogen and progesterone will increase that causes excessive gingival tissueresponse to local irritation. This study aims to determine oral hygiene level and gingivitis statusin pregnant women and relationship between oral hygiene level with gingivitis status in pregnantwomen. The kind of this research is analyitic correlation with cross sectional study, sampleswere taken with
The effectiveness of mimba oil (Azadirachta indica A. Juss spray disinfectant on alginate impression
Hanoem EH
2011-12-01
Full Text Available Background: Alginate impression contaminated by saliva and blood could potentially cause cross contamination. To prevent this, the impression has to be disinfected by disinfectant liquid, such as mimba oil. Mimba oil (Azadirachta indica A.Juss has some chemical content, such as azadirachtin, which is a phenol group used as antibacterial and antimalaria, nimbolide used as antibacterial and antimalarial, and nimbidin used as antibacterial and antifungal. Purpose: The purpose of this study was to find out the most effective concentration of mimba oil as disinfectant to decrease microorganism colony on alginate impression. Methods: Thirty six samples were taken from 9 respondents. This alginate impression was divided into 4 groups: group 1 sprayed with sterile aquadest (as control group, group 2 sprayed with mimba oil 50% for 30 seconds, group 3 sprayed with mimba oil 75% for 30 seconds, group 4 sprayed with mimba oil 100% for 30 seconds. The microorganism colony was counted by colony counter. The sample data then were analyzed with Kolmogorov-Smirnov test, and was tested with Kruskal Wallis test and Mann Whitney test for further analysis. Results: There was significant difference among each group, p = 0.01 (p < 0.05. Conclusion: In conclusion, usage of 50% concentration of mimba oil as disinfectant is effective to decrease microorganism colony on alginate impression.Latar belakang: Cetakan alginat yang terkontaminasi saliva dan darah dapat berpotensi terjadinya infeksi silang. Untuk mencegah hal tersebut, cetakan didisinfeksi dengan bahan disinfektan cair seperti minyak mimba. Minyak mimba (Azadirachta indica A.Juss memiliki beberapa kandungan kimia, antara lain Azadirachtin yang merupakan kelompok fenol yang memmiliki efek antibakteri dan antimalaria, nimbolide memiliki efek antibakteri dan antimalaria sedangkan nimbidin memiliki efek antibakteri dan antijamur. Tujuan: Tujuan dari penelitian ini adalah untuk menentukan konsentrasi yang paling
Wiwik Kus Endah
2014-08-01
Full Text Available Penelitian ini bertujuan untuk membuktikan (1 perbedaan kemampuan membaca permulaan antara peserta didik taman kanak-kanak bergaya belajar auditori dan visual yang dibimbing dengan metode SAS, (2 perbedaan kemampuan membaca permulaan antara peserta didik taman kanak-kanak bergaya belajar auditori dan visual yang dibimbing dengan metode kata lembaga, (3 interaksi antara penggunaan metode SAS dan metode kata lembaga untuk meningkatkan kemampuan membaca permulaan peserta didik taman kanak-kanak bergaya belajar auditori dan visual. Metode penelitian ini exsperimental design. Teknik pengumpulan data penelitian menggunakan instrumen tes kemampuan membaca permulaan, modality assessment test, wawancara, lembar observasi, dan dokumentasi. Untuk menganalisis data penelitian digunakan one sample kolmogorov-smirnov test pada program SPSS 16, uji homogenitas levene test, dan uji hipotesis dengan analisis varian 2x2. Simpulan hasil penelitian ini yaitu (1 terdapat perbedaan kemampuan membaca permulaan antara peserta didik TK Islam Pangeran Diponegoro yang memiliki gaya belajar auditori dan visual yang dibimbing dengan metode SAS, (2 terdapat perbedaan kemampuan membaca permulaan antara peserta didik TK Islam Pangeran Diponegoro yang memiliki gaya belajar auditori dan visual yang dibimbing dengan metode kata lembaga dan (3 terdapat interaksi antara penggunaan metode pembelajaran (SAS dan kata lembaga dengan gaya belajar (auditori dan visual pada kemampuan membaca permulaan peserta didik taman kanak-kanak.This study aimed to describe (1 the difference between the beginning reading skills of students kindergarten auditory and visual learning style that is guided by the SAS method; (2 the difference between the beginning reading skills of students kindergarten style learning auditory and visual guided the “kata lembaga”method;and (3 the interaction between the use of SAS methods and methods of ‘kata lembaga”to improve literacy learners beginning
Maria Virgínia de Carvalho
2013-02-01
Full Text Available FUNDAMENTO: A Hipertensão Arterial Sistêmica (HAS é um dos principais fatores de risco cardiovascular e de alta prevalência em quase todos os países. Estudos mostram o efeito negativo da HAS na qualidade de vida relacionada à saúde. OBJETIVO: Avaliar a Qualidade de Vida de pacientes hipertensos comparando com a população geral. MÉTODOS: Avaliados 333 indivíduos de ambos os sexos, maiores que 18 anos, divididos em Grupo Estudo, composto de 246 pacientes hipertensos sob tratamento em serviço multiprofissional e Grupo Controle, formado por 87 indivíduos normotensos da comunidade. Aplicaram-se a ambos os grupos, questionário sociodemográfico e o SF-36 de qualidade de vida. Para a análise estatística, utilizados os testes qui-quadrado, de Kolmogorov-Smirnov, de Mann Whitney U, de Kruskal-Wallis e análise multivariada. Os dados foram analisados pelo programa SPSS e valores de p BACKGROUND: Systemic Hypertension (SH is a major cardiovascular risk factor with a high prevalence in almost all countries. Studies show the negative effect of SH on health-related quality of life. OBJECTIVE: To evaluate the quality of life of hypertensive patients when compared with the general population. METHODS: A total of 333 individuals of both genders and older than 18 years were evaluated; they were divided into the Study Group, consisting of 246 hypertensive patients undergoing treatment in a multidisciplinary service and the Control group, comprised of 87 normotensive individuals from the community. A sociodemographic questionnaire and the SF-36 for quality of life assessment were administered to both groups. The Chi-square, Kolmogorov-Smirnov test, Mann Whitney U-test, Kruskal-Wallis test and multivariate analysis were used for the statistical analysis. Data were analyzed using SPSS and p values <0.05 were considered significant. RESULTS: The groups were homogeneous for age, gender, ethnicity, educational level and marital status. It was observed
Chuvas intensas no Estado da Bahia High intensity rains in the Bahia State - Brazil
Demetrius D. da Silva
2002-01-01
Full Text Available Séries históricas de precipitação pluvial de 19 estações pluviográficas localizadas no Estado da Bahia e operadas pela Agência Nacional de Energia Elétrica (ANEEL, foram analisadas, objetivando-se ajustar modelos teóricos de distribuição de probabilidade aos dados de chuvas intensas e estabelecer a relação entre intensidade, duração e freqüência da precipitação pluvial. Para cada estação pluviográfica determinaram-se as séries de intensidade máxima anual das precipitações com durações de 10, 20, 30, 40, 50, 60, 120, 180, 240, 360, 720 e 1.440 min. Os modelos probabilísticos testados foram os de Gumbel, Log-Normal a dois e três parâmetros, Pearson e Log-Pearson III. As equações de intensidade-duração-freqüência da precipitação pluvial foram ajustadas utilizando-se o método de regressão não-linear de Gauss-Newton. O teste de aderência de Kolmogorov-Smirnov, utilizado para a verificação do ajuste dos modelos aos dados de chuvas intensas, evidenciou que o modelo de Gumbel foi o que melhor se ajustou para a maior parte das combinações entre estações pluviográficas e durações estudadas. Foram evidenciadas, para uma mesma duração, grandes variações nas intensidades de precipitação entre as estações estudadas.This study was conducted for fitting probabilistic models to data of rain storms. The intensity-duration-frequency relationships were established for 19 locations in Bahia State. Series with the annual maximum rainfall intensities for the durations of 10, 20, 30, 40, 50, 60, 120, 180, 240, 360, 720 and 1440 min were used. Significant differences were observed in the maximum rainfall intensity values among the studied stations. The models utilized were Gumbel, Log-Normal (with two and three parameters, Pearson and Log-Pearson III. The Kolmogorov-Smirnov test was used to analyze the correlation between the model results and the rainfall data. The Gumbel model presented the best results for
Plaqueta e leptina em adolescentes com obesidade Platelet and leptin in obese adolescents
Denis Foschini
2008-12-01
Full Text Available OBJETIVOS: Analisar a influência de obesidade na contagem de células imunológicas e na concentração dos hormônios cortisol e leptina, a fim de estabelecer uma relação entre as variáveis analisadas. MÉTODOS: Foram recrutados 27 adolescentes obesos [índice de massa corporal (IMC ≥ percentil 95[ e 21 não-obesos (IMC ≤ percentil 75, de ambos os sexos, com idade entre 15 e 19 anos, na fase pós-púbere. O IMC foi calculado através da divisão do peso pela altura ao quadrado e a composição corporal foi estimada por pletismografia no sistema Bod PodTM. Amostras de sangue foram colhidas para análise de leucócitos, neutrófilos, linfócitos, monócitos, plaquetas, cortisol e leptina. O teste de Kolmogorov-Smirnov foi utilizado, seguido pelo teste t de Student independente supondo distribuição normal. O nível de significância estabelecido foi p OBJECTIVE: To analyze the influence of obesity status on immune cell count and concentration of the hormones cortisol and leptin, in order to establish a relationship among the variables analyzed. METHODS: We recruited 27 obese [body mass index (BMI ≥ 95th percentile[ and 21 non-obese (BMI ≤ 75th percentile adolescent boys and girls, aged 15-19 years at the post-pubertal stage. BMI was calculated as body weight divided by height squared, and body composition was estimated by plethysmography in the Bod PodTM system. Blood samples were collected to analyze leukocytes, neutrophils, lymphocytes, monocytes, platelets, cortisol, and leptin. The Kolmogorov-Smirnov test was performed, followed by the independent Student t test in case of normal distribution. Significance values were set at p < 0.05 and expressed as means ± standard deviation. The statistical package SPSS for Windows version 12.0 was used. RESULTS: There was no difference between obese and non-obese adolescents in terms of leukocyte, neutrophil, lymphocyte, monocyte and cortisol serum concentrations. The group of obese
Supernova neutrinos and explosive nucleosynthesis
Kajino, T. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan and Department of Astronomy, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033 (Japan); Aoki, W. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Cheoun, M.-K. [Department of Physics, Soongsil University, Seoul 156-743 (Korea, Republic of); Hayakawa, T. [Japan Atomic Energy Agency, Shirakara-Shirane 2-4, Tokai-mura, Ibaraki 319-1195 (Japan); Hidaka, J.; Hirai, Y.; Shibagaki, S. [National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Mathews, G. J. [Center for Astrophysics, Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Nakamura, K. [Faculty of Science and Engineering, Waseda University, Ohkubo 3-4-1, Shinjuku, Tokyo 169-8555 (Japan); Suzuki, T. [Department of Physics, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550 (Japan)
2014-05-09
Core-collapse supernovae eject huge amount of flux of energetic neutrinos. We studied the explosive nucleosyn-thesis in supernovae and found that several isotopes {sup 7}Li, {sup 11}B, {sup 92}Nb, {sup 138}La and {sup 180}Ta as well as r-process nuclei are affected by the neutrino interactions. The abundance of these isotopes therefore depends strongly on the neutrino flavor oscillation due to the Mikheyev-Smirnov-Wolfenstein (MSW) effect. We discuss first how to determine the neutrino temperatures in order to explain the observed solar system abundances of these isotopes, combined with Galactic chemical evolution of the light nuclei and the heavy r-process elements. We then study the effects of neutrino oscillation on their abundances, and propose a novel method to determine the still unknown neutrino oscillation parameters, mass hierarchy and θ{sub 13}, simultaneously. There is recent evidence that SiC X grains from the Murchison meteorite may contain supernova-produced light elements {sup 11}B and {sup 7}Li encapsulated in the presolar grains. Combining the recent experimental constraints on θ{sub 13}, we show that our method sug-gests at a marginal preference for an inverted neutrino mass hierarchy. Finally, we discuss supernova relic neutrinos that may indicate the softness of the equation of state (EoS) of nuclear matter as well as adiabatic conditions of the neutrino oscillation.
Fibroblast response to initial attachment and proliferation on titanium and zirconium surfaces.
Araceli Meza-Rodríguez
2016-08-01
Full Text Available Introduction: In recent decades, dental implants have become one of the best options for comprehensive dental restoration; their placement is a multidisciplinary task that requires a solid understanding of biological, periodontal, surgical and prosthetic principles. Objective: The aim of this study was to quantify in vitro the adhesion and proliferation of human gingival fibroblasts (HGF response on titanium (Ti and zirconia (Zr surfaces. Methodology: Samples of Ti and Zr were observed under atomic force microscopy (AFM. HGFs were inoculated in each sample to determine adhesion and cell proliferation. The reagent MTT was mixed with medium DMEM and inoculated in each plate; formazan was dissolved with dimethyl sulfoxide and analyzed at 540nm in a microplate spectrophotometer. The test was performed with three independent experiments. Data were analyzed with Kolmogorov-Smirnov tests (Lilliefors, Kruskal-Wallis tests and Mann-Whitney test comparisons. Results: Topography of the Zr plates showed greater roughness (Ra=0.39μm than Ti (Ra=0.049μm. Quantification of HGF adhesion was significantly higher (p<0.05 in Ti, while proliferation showed no statistically significant differences between the groups. Conclusion: It is noteworthy that, even though Ti initially showed increased cell adhesion on the surface, after 24h Zr samples showed similar proliferation; this demonstrates that both surfaces have a comparable biological response.
A study on the effect of board of directors on the rate of corporate transparency
Iman Rezaei
2012-10-01
Full Text Available The main target of this study is to consider the effect of the combination of board of directors on the corporate transparency in some companies among selected ones in Tehran Stock Exchange Market over the period of 2007- 2010. In this research, the combination of board of directors is selected among some factors of corporate transparency such as structure of ownership and the rights of owners, financial information and statistics and structure and combination of board of directors and managers as a sub-indicator for corporate governance. Linear regression statistical method is used to test hypotheses of study. The size of α is considered as 5% and hypotheses are accepted or rejected by means of Durbin-Watson and Clemogrov-Smirnov tests and by comparing p-value with α. At last, by means of forward regression method, the effect of control variables is considered over each hypothesis. The results show that the members of board of directors have no effect on partnership transparency, but effect on financial data and information and structure and combination of board of directors.
Implications of the GALLEX determination of the solar neutrino flux
Anselmann, P.; Hampel, W.; Heusser, G.; Kiko, J.; Kirsten, T.; Pernicka, E.; Plaga, R.; Rönn, U.; Sann, M.; Schlosser, C.; Wink, R.; Wójcik, M.; von Ammon, R.; Ebert, K. H.; Henrich, E.; Balata, M.; Bellotti, E.; Ferrari, N.; Lalla, H.; Stolarczyk, T.; Cattadori, C.; Cremonesi, O.; Fiorini, E.; Pezzoni, S.; Zanotti, L.; von Feilitzsch, F.; Mößbauer, R.; Schanda, U.; Berthomieu, G.; Schatzman, E.; Carmi, I.; Dostrovsky, I.; Bacci, C.; Belli, P.; Bernabei, R.; D'Angelo, S.; Paoluzi, L.; Charbit, S.; Cribier, M.; Dupont, G.; Gosset, L.; Rich, J.; Spiro, M.; Tao, C.; Vignaud, D.; Hahn, R. L.; Hartmann, F. X.; Rowley, J. K.; Stoenner, R. W.; Weneser, J.
1992-07-01
The GALLEX result 83 +/- 19 (stat.) +/- 8 (syst.) SNU is two standard deviations below the predictions of stellar model calculations (124-132 SNU). To fit this result together with those of the chlorine and Kamiokande experiments requires severe stretching of solar models but does not rule out such a procedure, leaving the possibility of massless neutrinos. It clearly implies that the pp neutrinos have been detected. The Mikheyev-Smirnov-Wolfenstein (MSW) mechanism provides a good fit, and the GALLEX result fixes the Δm2 and sin2 2θ parameters in two very confined ranges (around Δm2 = 6 × 10-6eV2 and sin2 2θ = 7 × 10-3 and around Δm2 = 8 × 10-6eV2 and sin2 2θ = 0.6). Explanations of the solar neutrino problems based on the decay or magnetic interactions of neutrinos are disfavoured. This work has been supported by the Office of Nuclear Physics of the US Department of Energy.
An X-ray luminosity analysis for FRIs and FRIIs
无
2009-01-01
Radio galaxies are divided into two groups according to their luminosities at 178 MHz, namely Fa- naroff-Riley type Is (FRIs) and Fanaroff-Riley type IIs (FRIIs) with FRIs showing lower radio luminosities than FRIIs. In this paper, the X-ray data are compiled for 183 radio galaxies (61 FRIs and 122 FRIIs), from the available literature, for the analysis of the X-ray properties. The 1 keV X-ray luminosities are calculated and discussed for the two groups, and an averaged X-ray luminosity of logLX1 keV = 41.30±2.51 erg·s-1·keV-1 is found for FRIs, which is lower than that for FRIIs, logLX1 KeV = 43.39±3.06 erg·s-1·keV-1. A Kolmogorov-Smirnov (K-S) test indicates that the probability for the X-ray luminosity distributions of the two groups to be from the same parent distribution is 1.44×10-10. We also discuss the origin and the mechanism of the X-ray emission for FRIs and FRIIs.
An X-ray luminosity analysis for FRIs and FRIIs
ZHANG ChunLing; FAN dunHui
2009-01-01
Radio galaxies are divided into two groups according to their luminosities at 178 MHz,namely Fa-naroff-Riley type Is (FRIIs) and Fanaroff-Riley type IIs (FRIIs) with FRIs showing lower radio luminosities than FRIIs.In this paper,the X-ray data are compiled for 183 radio galaxies (61 FRIs and 122 FRIIs),from the available literature,for the analysis of the X-ray properties.The 1 keV X-ray luminosities are calculated and discussed for the two groups,and an averaged X-ray luminosity of logLx1 keV= 41.30±2.51 erg· s-1.keV-1 is found for FRIs,which is lower than that for FRIIs,logLx1 KeV= 43.39±3.06 erg·s-1 keV-1.A Kolmogorov-Smirnov (K-S) test indicates that the probability for the X-ray luminosity distributions of the two groups to be from the same parent distribution is 1.44×1010.We also discuss the origin and the mechanism of the X-ray emission for FRIs and FRIIs.
An investigation on how TQM influences employee performance: A case study of banking industry
Saeed Hakami Nasab
2014-01-01
Full Text Available This paper presents an empirical investigation to study the relationship between employee performance and TQM. The proposed study of this paper designs two questionnaires for TQM and performance measurement and distributes them among some employees who worked for one of Iranian banks in city of Semnan, Iran. The result of Kolmogorov–Smirnov test confirms that all data are normally distributed and the study uses Pearson correlation to investigate the relationship between various components of the survey. The result of the implementation of Pearson correlation ratio indicates that there was a positive and meaningful relationship between employee performance and TQM components (r=4.6223, P-value=0.000. In addition, there are some positive and meaningful relationships between TQM components and employee performance. The highest correlation belongs to relationship between employee performance and feedback (r=4.6223, P-value=0.000 followed by training and development (r = 0.441, P-value = 0.000 and communication (r = 4.2861, P-value = 0.000.
Rawid Banchuin
2013-01-01
Full Text Available The novel probabilistic models of the random variations in nanoscale MOSFET's high frequency performance defined in terms of gate capacitance and transition frequency have been proposed. As the transition frequency variation has also been considered, the proposed models are considered as complete unlike the previous one which take only the gate capacitance variation into account. The proposed models have been found to be both analytic and physical level oriented as they are the precise mathematical expressions in terms of physical parameters. Since the up-to-date model of variation in MOSFET's characteristic induced by physical level fluctuation has been used, part of the proposed models for gate capacitance is more accurate and physical level oriented than its predecessor. The proposed models have been verified based on the 65 nm CMOS technology by using the Monte-Carlo SPICE simulations of benchmark circuits and Kolmogorov-Smirnov tests as highly accurate since they fit the Monte-Carlo-based analysis results with 99% confidence. Hence, these novel models have been found to be versatile for the statistical/variability aware analysis/design of nanoscale MOSFET-based analog/mixed signal circuits and systems.
Krivoruchenko, M.I. (Institut Teoreticheskoj i Ehksperimental' noj Fiziki, Moscow (USSR))
1989-11-01
A detailed statistical analysis of angular distribution of neutrino events observed in Kamiokande II and IMB detectors on UT 07:35, 2/23'87 is carried out. Distribution functions of the mean scattering angles in the reaction anti 4u{sub e}p->e{sup +}n and 4ue->4ue are constructed with account taken of the multiple Coulomb scattering and the experimental angular errors. The Smirnov and Wald-Wolfowitz run tests are used to test the hypothesis that the angular distributions of events from the two detectors agree with each other. We test with the use of the Kolmogorov and Mises statistical criterions the hypothesis that the recorded events all represent anti 4u{sub e}p->e{sup +}n inelastic scatterings. Then the Neyman-Pearson test is applied to each event in testing the hypothesis anti 4u{sub e}p->e{sup +}n against the alternative 4ue->4ue. The hypotheses that the number of elastic events equals s=0, 1, 2, ... against the alternatives snot =0, 1, 2, ... are tested on the basis of the generalized likelihood ratio criterion. The confidence intervals for the number of elastic events are also constructed. The current supernova models fail to give a satisfactory account of the angular distribution data. (orig.).
Long-term statistics of extreme tsunami height at Crescent City
Dong, Sheng; Zhai, Jinjin; Tao, Shanshan
2017-06-01
Historically, Crescent City is one of the most vulnerable communities impacted by tsunamis along the west coast of the United States, largely attributed to its offshore geography. Trans-ocean tsunamis usually produce large wave runup at Crescent Harbor resulting in catastrophic damages, property loss and human death. How to determine the return values of tsunami height using relatively short-term observation data is of great significance to assess the tsunami hazards and improve engineering design along the coast of Crescent City. In the present study, the extreme tsunami heights observed along the coast of Crescent City from 1938 to 2015 are fitted using six different probabilistic distributions, namely, the Gumbel distribution, the Weibull distribution, the maximum entropy distribution, the lognormal distribution, the generalized extreme value distribution and the generalized Pareto distribution. The maximum likelihood method is applied to estimate the parameters of all above distributions. Both Kolmogorov-Smirnov test and root mean square error method are utilized for goodness-of-fit test and the better fitting distribution is selected. Assuming that the occurrence frequency of tsunami in each year follows the Poisson distribution, the Poisson compound extreme value distribution can be used to fit the annual maximum tsunami amplitude, and then the point and interval estimations of return tsunami heights are calculated for structural design. The results show that the Poisson compound extreme value distribution fits tsunami heights very well and is suitable to determine the return tsunami heights for coastal disaster prevention.
An X-ray luminosity analysis for FRIs and FRIIs
Zhang, Chunling; Fan, Junhui
2009-09-01
Radio galaxies are divided into two groups according to their luminosities at 178 MHz, namely Fanaroff-Riley type Is (FRIs) and Fanaroff-Riley type IIs (FRIIs) with FRIs showing lower radio luminosities than FRIIs. In this paper, the X-ray data are compiled for 183 radio galaxies (61 FRIs and 122 FRIIs), from the available literature, for the analysis of the X-ray properties. The 1 keV X-ray luminosities are calculated and discussed for the two groups, and an averaged X-ray luminosity of log L {X/1 keV} = 41.30±2.51 erg·s-1·keV-1 is found for FRIs, which is lower than that for FRIIs, log L {X/1 keV} = 43.39±3.06 erg·s-1·keV-1. A Kolmogorov-Smirnov (K-S) test indicates that the probability for the X-ray luminosity distributions of the two groups to be from the same parent distribution is 1.44×10-10. We also discuss the origin and the mechanism of the X-ray emission for FRIs and FRIIs.
Hamid Ahmadi
2015-01-01
Full Text Available Fatigue life of tubular joints in offshore structures is significantly influenced by the degree of bending (DoB. The DoB exhibits considerable scatter calling for greater emphasis in accurate determination of its governing probability distribution which is a key input for the fatigue reliability analysis of a tubular joint. Although the tubular X-joints are commonly found in offshore jacket structures, as far as the authors are aware, no comprehensive research has been carried out on the probability distribution of the DoB in tubular X-joints. In the present paper, results of parametric equations available for the calculation of the DoB have been used to develop probability distribution models for the DoB in the chord member of tubular X-joints subjected to four types of bending loads. Based on a parametric study, a set of samples was prepared and density histograms were generated for these samples using Freedman-Diaconis method. Twelve different probability density functions (PDFs were fitted to these histograms. In each case, Kolmogorov-Smirnov test was used to evaluate the goodness of fit. Finally, after substituting the values of estimated parameters for each distribution, a set of fully defined PDFs have been proposed for the DoB in tubular X-joints subjected to bending loads.
Hung-Chung Huang
Full Text Available BACKGROUND: Identification of genes with switch-like properties will facilitate discovery of regulatory mechanisms that underlie these properties, and will provide knowledge for the appropriate application of Boolean networks in gene regulatory models. As switch-like behavior is likely associated with tissue-specific expression, these gene products are expected to be plausible candidates as tissue-specific biomarkers. METHODOLOGY/PRINCIPAL FINDINGS: In a systematic classification of genes and search for biomarkers, gene expression profiles (GEPs of more than 16,000 genes from 2,145 mouse array samples were analyzed. Four distribution metrics (mean, standard deviation, kurtosis and skewness were used to classify GEPs into four categories: predominantly-off, predominantly-on, graded (rheostatic, and switch-like genes. The arrays under study were also grouped and examined by tissue type. For example, arrays were categorized as 'brain group' and 'non-brain group'; the Kolmogorov-Smirnov distance and Pearson correlation coefficient were then used to compare GEPs between brain and non-brain for each gene. We were thus able to identify tissue-specific biomarker candidate genes. CONCLUSIONS/SIGNIFICANCE: The methodology employed here may be used to facilitate disease-specific biomarker discovery.
Application of survival analysis methodology to the quantitative analysis of LC-MS proteomics data
Tekwe, C. D.
2012-05-24
MOTIVATION: Protein abundance in quantitative proteomics is often based on observed spectral features derived from liquid chromatography mass spectrometry (LC-MS) or LC-MS/MS experiments. Peak intensities are largely non-normal in distribution. Furthermore, LC-MS-based proteomics data frequently have large proportions of missing peak intensities due to censoring mechanisms on low-abundance spectral features. Recognizing that the observed peak intensities detected with the LC-MS method are all positive, skewed and often left-censored, we propose using survival methodology to carry out differential expression analysis of proteins. Various standard statistical techniques including non-parametric tests such as the Kolmogorov-Smirnov and Wilcoxon-Mann-Whitney rank sum tests, and the parametric survival model and accelerated failure time-model with log-normal, log-logistic and Weibull distributions were used to detect any differentially expressed proteins. The statistical operating characteristics of each method are explored using both real and simulated datasets. RESULTS: Survival methods generally have greater statistical power than standard differential expression methods when the proportion of missing protein level data is 5% or more. In particular, the AFT models we consider consistently achieve greater statistical power than standard testing procedures, with the discrepancy widening with increasing missingness in the proportions. AVAILABILITY: The testing procedures discussed in this article can all be performed using readily available software such as R. The R codes are provided as supplemental materials. CONTACT: ctekwe@stat.tamu.edu.
Siwabessy, P. Justy W.; Tran, Maggie; Picard, Kim; Brooke, Brendan P.; Huang, Zhi; Smit, Neil; Williams, David K.; Nicholas, William A.; Nichol, Scott L.; Atkinson, Ian
2017-05-01
Spatial information on the distribution of seabed substrate types in high use coastal areas is essential to support their effective management and environmental monitoring. For Darwin Harbour, a rapidly developing port in northern Australia, the distribution of hard substrate is poorly documented but known to influence the location and composition of important benthic biological communities (corals, sponges). In this study, we use angular backscatter response curves to model the distribution of hard seabed in the subtidal areas of Darwin Harbour. The angular backscatter response curve data were extracted from multibeam sonar data and analysed against backscatter intensity for sites observed from seabed video to be representative of "hard" seabed. Data from these sites were consolidated into an "average curve", which became a reference curve that was in turn compared to all other angular backscatter response curves using the Kolmogorov-Smirnov goodness-of-fit. The output was used to generate interpolated spatial predictions of the probability of hard seabed (p-hard) and derived hard seabed parameters for the mapped area of Darwin Harbour. The results agree well with the ground truth data with an overall classification accuracy of 75% and an area under curve measure of 0.79, and with modelled bed shear stress for the Harbour. Limitations of this technique are discussed with attention to discrepancies between the video and acoustic results, such as in areas where sediment forms a veneer over hard substrate.
Nishioka, Hiroaki; Wu, Jiun-Huei Proty; Ho, Paul T P; Huang, Chih-Wei Locutus; Koch, Patrick M; Liao, Yu-Wei; Lin, Kai-Yang; Liu, Guo-Chin; Molnar, Sandor M; Umetsu, Keiichi; Birkinshaw, Mark; Altamirano, Pablo; Chang, Chia-Hao; Chang, Shu-Hao; Chang, Su-Wei; Chen, Ming-Tang; Han, Chih-Chiang; Huang, Yau-De; Hwang, Yuh-Jing; Jiang, Homin; Kesteven, Michael; Kubo, Derek Y; Li, Chao-Te; Martin-Cocher, Pierre; Oshiro, Peter; Raffin, Philippe; Wei, Tashun; Wilson, Warwick
2008-01-01
We describe methods used to validate data from the Y.T. Lee Array for Microwave Background Anisotropy (AMiBA), an interferometric array designed to measure the Sunyaev-Zel'dovich effect and the anisotropy of the Cosmic Microwave Background (CMB). We perform several statistical tests on data from pointed galaxy cluster observations taken in 2007 and noise data from long-term blank sky observations and measurements with the feeds covered by the absorbers. We apply power spectrum analysis, cross power spectrum analysis among different outputs with different time lags in our analog correlator, and sample variance law tests to noise data. We find that (1) there is no time variation of electronic offsets on the time scale of our two-patch observations (~10 minutes); (2) noise is correlated by less than 10% between different lags; and (3) the variance of noise scales with the inverse of time. To test the Gaussianity of the data, we apply Kolmogorov-Smirnov (K-S) tests to cluster data, and find that a 5% significance...
Analysis of vehicle headway distribution on multi-lane freeway considering car–truck interaction
Dewen Kong
2016-04-01
Full Text Available The primary objective of this study is to identify the characteristics of vehicle headway on multi-lane freeway under lane management in China considering car–truck interaction. More specifically, the study focused on answering the following two questions: (1 whether the car–truck interaction has impact on headway, that is, headway varies by different leading and following vehicle types and (2 what is the best-fitted distribution model for particular headway type under lane management. The team collected traffic data, including traffic flow rates, percentage of trucks, speeds, headways, and so on from four segments of Shanghai-Nanjing freeway, Jiangsu Province in China. Then, some statistical methods were used to analyze the vehicle headway. It was found that car–car, car/truck, and truck–truck headways are significantly different from each other. Also, the traffic flow rate, percentage of trucks, and lane position were found to have an influence on the vehicle headway through the tests. Using the maximum-likelihood estimation, Kolmogorov–Smirnov test, and chi-square test techniques, the distribution models and parameter functions for each headway type were built and validated. The results showed that lognormal model is suitable for car–car and truck–truck headway types, and inverse Gaussian model fits the car/truck headway type well.
Gorgulu, O; Akilli, A
2017-01-01
The concept of burnout is an important element for efficiency in occupational groups such as health and education, which necessitate constant communication with people and have a busy schedule. The determination of the levels of burnout syndrome, organizational commitment, and job satisfaction of the health workers. A questionnaire consisting of four parts was prepared so as to measure the levels of organizational commitment, job satisfaction, and burnout of the medical staff of the institution. The data for this research were gained by a questionnaire sent to 370 medical staff (doctors, nurses, contract staff, and other employees). Kolmogorov Smirnov test, t-test, ANOVA, Tukey multiple comparison test and Pearson's correlation analysis were used to this study. The average age of the employees taking part in the questionnaire was calculated as 34.30 years (min: 18 years, max: 59 years). The proportional value of the individuals with their 0-5 years working period in the institution was observed as 58.1%. An individual's interior work satisfaction, education level, hours worked at the hospital and their titles are also statistically important (Ppersonal productivity will be increased, and gain will be obtained in the institutional sense.
Application of In-Segment Multiple Sampling in Object-Based Classification
Nataša Đurić
2014-12-01
Full Text Available When object-based analysis is applied to very high-resolution imagery, pixels within the segments reveal large spectral inhomogeneity; their distribution can be considered complex rather than normal. When normality is violated, the classification methods that rely on the assumption of normally distributed data are not as successful or accurate. It is hard to detect normality violations in small samples. The segmentation process produces segments that vary highly in size; samples can be very big or very small. This paper investigates whether the complexity within the segment can be addressed using multiple random sampling of segment pixels and multiple calculations of similarity measures. In order to analyze the effect sampling has on classification results, statistics and probability value equations of non-parametric two-sample Kolmogorov-Smirnov test and parametric Student’s t-test are selected as similarity measures in the classification process. The performance of both classifiers was assessed on a WorldView-2 image for four land cover classes (roads, buildings, grass and trees and compared to two commonly used object-based classifiers—k-Nearest Neighbor (k-NN and Support Vector Machine (SVM. Both proposed classifiers showed a slight improvement in the overall classification accuracies and produced more accurate classification maps when compared to the ground truth image.
Season of birth and handedness in Serbian high school students
Milenković Sanja
2008-01-01
Full Text Available Abstract Background Although behavioural dominance of the right hand in humans is likely to be under genetic control, departures from this population norm, i.e. left- or non-right-handedness, are believed to be influenced by environmental factors. Among many such environmental factors including, for example, low birth weight, testosterone level, and maternal age at birth, season of birth has occasionally been investigated. The overall empirical evidence for the season of birth effect is mixed. Methods We have investigated the effect of season of birth in an epidemiologically robust sample of randomly selected young people (n = 977, all born in the same year. A Kolmogorov-Smirnov type statistical test was used to determine season of birth. Results Neither the right-handed nor the non-right-handed groups demonstrated birth asymmetry relative to the normal population birth distribution. There was no between-group difference in the seasonal distribution of birth when comparing the right-handed to the non-right-handed groups. Conclusion The present study failed to provide support for a season of birth effect on atypical lateralisation of handedness in humans.
Vickers microhardness comparison of 4 composite resins with different types of filler.
René García-Contreras
2015-10-01
Full Text Available Composite resins are the material of choice to restore minimal invasive cavities; conversely, it is important to explore the mechanical properties of commercially available dental materials. Objective: To compare the Vickers microhardness (VHN of four available commercial composite resins using standardized samples and methods. Methodology: Composite cylinders were manufactured in a Teflon mould. We used the follow composite resins (n=4/gp: Microhybrid resins [Feeling Lux (Viarden and Amelogen Plus (Ultradent], Hybrid resin [Te-Econom Plus (Ivoclar] and Nanohybrid resin [Filtek Z350 (3M ESPE]. All samples were incubated in distilled water at 37ºC for five days. The test was carried out with microhardness indenter at 10 N, and a dwelling time of 10 s for 9 indentations across the specimens resulting in a total of 36 indentations for each group. Data were subjected to Kolmogorov-Smirnov normality test and ANOVA (post-hoc Tukey test. Results: The VHN mean values ranged from harder to softer as follows: Filtek Z350 (71.96±6.44 (p Amelogen Plus (59.90±4.40 (p Feeling lux (53.52±5.72> Te-Econom Plus (53.26±5.19. Conclusion: According to our results, the microhardness of the evaluated conventional composite resins can withstand the masticatory forces; however nanohybrid composite resins showed better Vickers microhardness and therefore are a more clinically suitable option for minimal invasion treatments.
Rotational properties of Maria asteroid family
Kim, Myung-Jin; Moon, Hong-Kyu; Byun, Yong-Ik; Brosch, Noah; Kaplan, Murat; Kaynar, Suleyman; Uysal, Omer; Guzel, Eda; Behrend, Raoul; Yoon, Joh-Na; Mottola, Stefano; Hellmich, Stephan; Hinse, Tobias C; Eker, Zeki; Park, Jang-Hyun
2013-01-01
Maria family is regarded as an old-type (~3 +/- 1 Gyr) asteroid family which has experienced substantial collisional and dynamical evolution in the Main-belt. It is located nearby the 3:1 Jupter mean motion resonance area that supplies Near-Earth asteroids (NEAs) to the inner Solar System. We carried out observations of Maria family asteroids during 134 nights from 2008 July to 2013 May, and derived synodic rotational periods for 51 objects, including newly obtained periods of 34 asteroids. We found that there is a significant excess of fast and slow rotators in observed rotation rate distribution. The two-sample Kolmogorov-Smirnov test confirms that the spin rate distribution is not consistent with a Maxwellian at a 92% confidence level. From correlations among rotational periods, amplitudes of lightcurves, and sizes, we conclude that the rotational properties of Maria family asteroids have been changed considerably by non-gravitational forces such as the YORP effect. Using a lightcurve inversion method (Kaa...
Yuri Martins COSTA
2015-12-01
Full Text Available ABSTRACT Low pressure Pain Threshold (PPT is considered a risk factor for Temporomandibular Disorders (TMD and is influenced by psychological variables. Objectives To correlate deep pain sensitivity of masticatory muscles with prosthetic factors and Oral-Health-Related Quality of Life (OHRQoL in completely edentulous subjects. Material and Methods A total of 29 complete denture wearers were recruited. The variables were: a Pressure Pain Threshold (PPT of the masseter and temporalis; b retention, stability, and tooth wear of dentures; c Vertical Dimension of Occlusion (VDO; d Oral Health Impact Profile (OHIP adapted to orofacial pain. The Kolmogorov-Smirnov test, the Pearson Product-Moment correlation coefficient, the Spearman Rank correlation coefficient, the Point-Biserial correlation coefficient, and the Bonferroni correction (α=1% were applied to the data. Results The mean age (standard deviation of the participants was of 70.1 years (9.5 and 82% of them were females. There were no significant correlations with prosthetic factors, but significant negative correlations were found between the OHIP and the PPT of the anterior temporalis (r=-0.50, 95% CI-0.73 to 0.17, p=0.005. Discussion The deep pain sensitivity of masticatory muscles in complete dentures wearers is associated with OHRQoL, but not with prosthetic factors.
Evaluating and Investigating the Relationship between the Financial Policies and the Growth Economic
Morteza Raei Dehaghi
2013-07-01
Full Text Available This research is applied in terms of objective, with the library type based on the data collection and is among the correlation studies in terms of method and is seeking to explain the relationship and calculate the correlation rate and coefficients of each independent variable with the economic growth by using the econometric models. Data and information needed for the research are collected based on document library studies and information related to research variables are extracted by referring to the websites of Central Bank and Iranian Center of Statistics. First, the significant relationship between the independent and dependent variables was studied by Pearson correlation coefficient test and then the Kolmogorov-Smirnov test was used in order to determine the normality of data dispersion. The accuracy test of classical assumptions was done for estimated functions and assurance of desired estimations accuracy and estimated relationship and the long-term and balance coefficients of independent variables. Evaluation of stability (Durability or reliability of variables was done by EViews software and the statistics R2, F and Durbin-Watson were used in the analysis as the outputs of software. Finally, it was concluded that the tax has no significant relationship with the economic growth and the government spending has a direct and significant relationship with the economic growth.
Hassan Ghorbani
2013-11-01
Full Text Available The present paper, titled ‘A Study of the Effect of market orientation on SME firm performance the mediating role of product management’ Seek to answer the question Which aspects of product management how affect the firm performance Thus the product management literature, as well as market orieantation and performance in home appliances factories in Isfahan Province are examined. This research, in terms of its purpose, is an applied one; and in terms of implementation method, is a survey with a correlation approach. The statistical population include 84 managers (senior, marketing, manufacturing and R&D of the home appliances manufacturing companies in Esfahan Province. The data collection tool is a researcher-made questionnaire containing 30 items, of which the validity has been confirmed using the comments from advisors, professionals and experts; and the reliability, determined through Cronbach's alpha coefficient of 90% The questionnaire includes personal data and main, specialized items for examining the research hypotheses. The collected data were analyzed using SPSS and AMOS software programs through statistical tests at descriptive (frequency, percentage, accumulated percentage, average and standard deviation and inferential (regression modeling, variance analysis, non- parametric Kolmogorov and Smirnov test, and Freedman non-parametric test levels. According to the results obtained, all hypotheses were supported. Therefore, it was concluded that the product management as a mediator has a significant effect on the relationship between market orientation and performance.
Fitting and goodness-of-fit test of non-truncated and truncated power-law distributions
Corral, Alvaro
2012-01-01
Power-law distributions contain precious information about a large variety of processes in geoscience and elsewhere. Although there are sound theoretical grounds for these distributions, the empirical evidence in favor of power laws has been traditionally weak. Recently, Clauset et al. have proposed a systematic method to find over which range (if any) a certain distribution behaves as a power law. However, their method has been found to fail, in the sense that true (simulated) power-law tails are not recognized as such in some instances, and then the power-law hypothesis is rejected. Moreover, the method does not work well when extended to power-law distributions with an upper truncation. We explain in detail a similar but alternative procedure, valid for truncated as well as for non-truncated power-law distributions, based in maximum likelihood estimation, the Kolmogorov-Smirnov goodness-of-fit test, and Monte Carlo simulations. An overview of the main concepts as well as a recipe for their practical implem...
A Direct Comparison of Two Densely Sampled HIV Epidemics: The UK and Switzerland
Ragonnet-Cronin, Manon L.; Shilaih, Mohaned; Günthard, Huldrych F.; Hodcroft, Emma B.; Böni, Jürg; Fearnhill, Esther; Dunn, David; Yerly, Sabine; Klimkait, Thomas; Aubert, Vincent; Yang, Wan-Lin; Brown, Alison E.; Lycett, Samantha J.; Kouyos, Roger; Brown, Andrew J. Leigh
2016-09-01
Phylogenetic clustering approaches can elucidate HIV transmission dynamics. Comparisons across countries are essential for evaluating public health policies. Here, we used a standardised approach to compare the UK HIV Drug Resistance Database and the Swiss HIV Cohort Study while maintaining data-protection requirements. Clusters were identified in subtype A1, B and C pol phylogenies. We generated degree distributions for each risk group and compared distributions between countries using Kolmogorov-Smirnov (KS) tests, Degree Distribution Quantification and Comparison (DDQC) and bootstrapping. We used logistic regression to predict cluster membership based on country, sampling date, risk group, ethnicity and sex. We analysed >8,000 Swiss and >30,000 UK subtype B sequences. At 4.5% genetic distance, the UK was more clustered and MSM and heterosexual degree distributions differed significantly by the KS test. The KS test is sensitive to variation in network scale, and jackknifing the UK MSM dataset to the size of the Swiss dataset removed the difference. Only heterosexuals varied based on the DDQC, due to UK male heterosexuals who clustered exclusively with MSM. Their removal eliminated this difference. In conclusion, the UK and Swiss HIV epidemics have similar underlying dynamics and observed differences in clustering are mainly due to different population sizes.
Characteristics of seeding particles for PIV/PTV analysis
Hadad, Tal; Liberzon, Alexander; Bernhaim, Anne; Gurka, Roi
2011-11-01
PIV and PTV are non-intrusive state-of-the-art techniques widely used for flow measurements. Seeding particles are required to be used as tracers to the flow. The accuracy of the velocity measurements is limited by the ability of the tracer particles to adequately follow the instantaneous motion of the continuous phase. In order to follow the flow effectively, the particles should satisfy numerous requirements: size, sphericity, density, high refractive index, concentration and chemical inert. Since seeding particles for liquids are commonly polymer-based particles we probe the influence of their surface coating on the results obtained from optical measurements. Using a canonical lid-driven cavity flow we measured the velocity field using PIV and PTV and compared the results (velocity and acceleration) obtained with the same particles with and without chemical treatment of surfactants. Probability density functions of the results using particles before and after treatment are compared statistically utilizing the two-sample Kolmogorov-Smirnov tests. Although the mean values exhibit similar trends, fluctuations and velocity derivatives show some discrepancy in respect to the chemical treatment. The obtained results show a variance of up to 5% between the values obtained for using washed and un-washed particles, for both PIV and PTV experiments with some influence related to the size of the particles.
The limitations of simple gene set enrichment analysis assuming gene independence.
Tamayo, Pablo; Steinhardt, George; Liberzon, Arthur; Mesirov, Jill P
2016-02-01
Since its first publication in 2003, the Gene Set Enrichment Analysis method, based on the Kolmogorov-Smirnov statistic, has been heavily used, modified, and also questioned. Recently a simplified approach using a one-sample t-test score to assess enrichment and ignoring gene-gene correlations was proposed by Irizarry et al. 2009 as a serious contender. The argument criticizes Gene Set Enrichment Analysis's nonparametric nature and its use of an empirical null distribution as unnecessary and hard to compute. We refute these claims by careful consideration of the assumptions of the simplified method and its results, including a comparison with Gene Set Enrichment Analysis's on a large benchmark set of 50 datasets. Our results provide strong empirical evidence that gene-gene correlations cannot be ignored due to the significant variance inflation they produced on the enrichment scores and should be taken into account when estimating gene set enrichment significance. In addition, we discuss the challenges that the complex correlation structure and multi-modality of gene sets pose more generally for gene set enrichment methods.
Floristic evolution in an agroforestry system cultivation in Southern Brazil.
Silva, Luís C R; Machado, Sebastião A; Galvão, Franklin; Figueiredo, Afonso
2016-06-07
Bracatinga (Mimosa scabrella Bentham) is an important pioneer tree species in Ombrophylous Mixed Forest of Brazil and is widely used as an energy source. In traditional agroforestry systems, regeneration is induced by fire, then pure and dense stands known as bracatinga stands (bracatingais) are formed. In the first year, annual crops are intercalated with the seedlings. At that time the seedlings are thinned, then the stands remain at a fallow period and cut at seven years old. The species is very important mainly for small landowners. We studied the understory species that occur naturally during the succession over several years in order to manage them rationally in the future and maintain the natural vegetation over time. Three to 20 year-old Bracatinga stands were sampled between 1998 and 2011. All tree species with diameter at breast height (DBH) ≥ 5 cm were measured.The floristic evolution was assessed with respect to Sociability Index, the Shannon Diversity Index and the Pielou Evenness Index. Graphs of rank/abundance over different age groups were evaluated using the Kolmogorov-Smirnov test. We identified 153 species dispersed throughout the understory and tend to become aggregated over time.
On the Efficient Generation of α-κ-μ and α-η-μ White Samples with Applications
Rausley Adriano Amaral de Souza
2015-01-01
Full Text Available This paper is concerned with a simple and highly efficient random sequence generator for uncorrelated α-κ-μ and α-η-μ variates. The algorithm may yield an efficiency of almost 100%, and this high efficiency can be reached for all special cases such as α-μ, κ-μ, η-μ, Nakagami-m, Nakagami-q, Weibull, Hoyt, Rayleigh, Rice, Exponential, and the One-Sided Gaussian. This generator is implemented via the rejection technique and allows for arbitrary fading parameters. The goodness-of-fit is measured using the Kolmogorov-Smirnov and Anderson-Darling tests. The maximum likelihood parameter estimation for the κ-μ distribution is proposed and verified against true values of the parameters chosen in the generator. We also provide two important applications for the random sequence generator, the first one dealing with the performance assessment of a digital communication system over the α-κ-μ and α-η-μ fading channels and the second one dealing with the performance assessment of the spectrum sensing with energy detection over special cases of these channels. Theoretical and simulation results are compared, validating again the accuracy of the generators.
Interactive statistical-distribution-analysis program utilizing numerical and graphical methods
Glandon, S. R.; Fields, D. E.
1982-04-01
The TERPED/P program is designed to facilitate the quantitative analysis of experimental data, determine the distribution function that best describes the data, and provide graphical representations of the data. This code differs from its predecessors, TEDPED and TERPED, in that a printer-plotter has been added for graphical output flexibility. The addition of the printer-plotter provides TERPED/P with a method of generating graphs that is not dependent on DISSPLA, Integrated Software Systems Corporation's confidential proprietary graphics package. This makes it possible to use TERPED/P on systems not equipped with DISSPLA. In addition, the printer plot is usually produced more rapidly than a high-resolution plot can be generated. Graphical and numerical tests are performed on the data in accordance with the user's assumption of normality or lognormality. Statistical analysis options include computation of the chi-squared statistic and its significance level and the Kolmogorov-Smirnov one-sample test confidence level for data sets of more than 80 points. Plots can be produced on a Calcomp paper plotter, a FR80 film plotter, or a graphics terminal using the high-resolution, DISSPLA-dependent plotter or on a character-type output device by the printer-plotter. The plots are of cumulative probability (abscissa) versus user-defined units (ordinate). The program was developed on a Digital Equipment Corporation (DEC) PDP-10 and consists of 1500 statements. The language used is FORTRAN-10, DEC's extended version of FORTRAN-IV.
Rodrigo Santos
Full Text Available Resumo Este artigo objetiva comparar a amplitude de circulação da bola da seleção espanhola de futebol na Copa do Mundo Fifa® 2010, pelo número de variações de corredor (NVC em diferentes status das partidas. A amostra englobou 850 sequências ofensivas dos sete jogos da equipe na competição. Para coleta de dados, usou-se a observação de partidas televisionadas. Os dados foram registrados no Excel 2007. Fez-se análise descritiva para NVC. O teste de Kolmogorov-Smirnov foi usado para verificar a distribuição dos dados. Usou-se o teste de Kruskal-Wallis (p < 0,05 para comparar o NVC entre os status das partidas. Não houve diferença significativa de NVC nos status das partidas (p = 0,328. Conclui-se que o status da partida não influenciou a amplitude de circulação da bola da Espanha.
Effect of Fiber Layers on the Fracture Resistance of Fiber Reinforced Composite Bridges
A Fazel
2011-08-01
Full Text Available Introduction: The purpose of this in vitro study was to introduce the fiber reinforced composite bridges and evaluate the most suitable site and position for placement of fibers in order to get maximum strength. Methods: The study included 20 second premolars and 20 second molars selected for fabricating twenty fiber reinforced composite bridges. Twenty specimens were selected for one fiber layer and the remaining teeth for two fiber layers. In the first group, fibers were placed in the inferior third and in the second group, fibers were placed in both the middle and inferior third region. After tooth preparation, the restorations were fabricated, thermocycled and then loaded with universal testing machine in the middle of the pontics with crosshead speed of 1mm/min. Data was analyzed by Kolmogorov-Smirnov test, Independent sample t test and Kaplan-Meier test. Mode of failure was evaluated using stereomicroscope. Results: Mean fracture resistance for the first and second groups was 1416±467N and 1349±397N, respectively. No significant differences were observed between the groups (P>0.05.In the first group, 5 specimens had delamintation and 5 specimens had detachment between fibers and resin composite. In the second group, there were 4 and 6 delaminations and detachments, respectively. There was no fracture within the fiber. Conclusion: In the fiber reinforced fixed partial dentures, fibers reinforce the tensile side of the connectors but placement of additional fibers at other sites does not increase the fracture resistance of the restoration.
The Relationship between Some Factors of Socialization with the Growth of Youth Sports Participation
Sh. Shafiee
2016-07-01
Full Text Available Participation in physical activity and taking an active lifestyle, depend on the nature of social relationships and internalize the experiences of others, especially significant others.So the aim of this study was to survey the relationship between some factors of socialization of youth athletes of Rasht with the growth sport participation from sociological and physical education perspective.This was a descriptive-survey study. The population included all 15-29 years old youth athlete in Rasht (55807 people.The sample size was 400 people who selected through stratified (selecting active athletic fields and random (selecting athletes and sports clubs sampling method.The instrument was a researchers-made questionnaire designed based on questionnaires Parsamhr (1389 and Shamsi (1390.Validity of questionnaire was confirmed by ten professors of physical education in University of Guilan and Cronbach's alpha reliability coefficient was 0/88.Descriptive statistics and Kolmogorov-Smirnov test and Spearman's correlation coefficient was used. The results showed that all aspects of socialization are positive and significant relationship with the development of sport participation. Final model of study showed that the weight regression of three factors of sports rate in the family; support family members and the school and teachers, respectively 89/0, 80/0 and 62/0 is the greatest impact factor. Based on the result it seems the family support, either verbal or participation of parents in physical activity, have a major impact on sports participation of children.
Mildaziene, Vida; Pauzaite, Giedre; Malakauskiene, Asta; Zukiene, Rasa; Nauciene, Zita; Filatova, Irina; Azharonok, Viktor; Lyushkevich, Veronika
2016-08-30
Radiofrequency (5.28 MHz) electromagnetic radiation and low-temperature plasma were applied as short-term (2-15 min) seed treatments to two perennial woody plant species, including Smirnov's rhododendron (Rhododendron smirnowii Trautv.) and black mulberry (Morus nigra L.). Potential effects were evaluated using germination indices and morphometry. The results suggest that treatment with electromagnetic field stimulated germination of freshly harvested R. smirnowii seeds (increased germination percentage up to 70%), but reduced germination of fresh M. nigra seeds (by 24%). Treatment with low-temperature plasma negatively affected germination for R. smirnowii, and positively for M. nigra. The treatment-induced changes in germination depended on seed dormancy state. Longer-term observations revealed that the effects persisted for more than a year; however, even negative effects on germination came out as positive effects on plant morphometric traits over time. Treatments characterized as distressful based on changes in germination and seedling length increased growth of R. smirnowii after 13 months. Specific changes included stem and root branching, as well as increased leaf count and surface area. These findings imply that longer-term patterns of response to seed stressors may be complex, and therefore, commonly used stressor-effects estimates, such as germination rate or seedling morphology, may be insufficient for qualifying stress response. Bioelectromagnetics. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.
Using Mathematica to build Non-parametric Statistical Tables
Gloria Perez Sainz de Rozas
2003-01-01
Full Text Available In this paper, I present computational procedures to obtian statistical tables. The tables of the asymptotic distribution and the exact distribution of Kolmogorov-Smirnov statistic Dn for one population, the table of the distribution of the runs R, the table of the distribution of Wilcoxon signed-rank statistic W+ and the table of the distribution of Mann-Whitney statistic Ux using Mathematica, Version 3.9 under Window98. I think that it is an interesting cuestion because many statistical packages give the asymptotic significance level in the statistical tests and with these porcedures one can easily calculate the exact significance levels and the left-tail and right-tail probabilities with non-parametric distributions. I have used mathematica to make these calculations because one can use symbolic language to solve recursion relations. It's very easy to generate the format of the tables, and it's possible to obtain any table of the mentioned non-parametric distributions with any precision, not only with the standard parameters more used in Statistics, and without transcription mistakes. Furthermore, using similar procedures, we can generate tables for the following distribution functions: Binomial, Poisson, Hypergeometric, Normal, x2 Chi-Square, T-Student, F-Snedecor, Geometric, Gamma and Beta.
Effect of Teaching Reading and Traditional Methods of Language Therapy on
Mehdi Dehghan
2014-05-01
Full Text Available Background: The present study compares the effects of reading instruction and traditional methods on grammar quotient of 4 to 10 years old children with down syndrome having IQ scores of 40 to 60. Materials and Methods: In this quasi-experimental and interventional study, 20 children with down syndrome, average mean age of 63 months, and 40 to 60 IQ scores were selected from 96 children with down syndrome from rehabilitation clinics within Tehran and Karaj, using convenience sampling. Then, they were assigned into two groups in the presence of their parents, using balanced randomized method. The first group was educated by whole-word reading method and the second group by traditional methods. Both groups had three 15-minute sessions per week for a period of 6 months. Pre-test and post-test grammar quotient of both groups was assessed using the Test of Persian language development. The obtained data were analyzed using the Kolmogorov-Smirnov test, t-test, and paired t-test. Results: Both groups were quite similar in age, IQ, and grammar quotient, prior to training. However, the first group showed significant development in grammar quotient, after training (p<0.001. Conclusion: In comparison with traditional methods of language therapy that emphasize on weakness of children with down syndrome by employing auditory modality, teaching reading through whole-word method based on their strength “visual memory” has more influence on grammar quotient of them.
Dinamarca Montecinos, Jose Luis; Vásquez Leiva, Alejandra; Durán Agüero, Samuel; Rubio Herrera, Ramona
2015-12-01
Introducción: en los adultos mayores son frecuentes el deficit de vitamina D y las fracturas de cadera (FC). Existe relacion entre ambas condiciones, demostrandose que la suplementacion de vitamina D mejora el pronostico de las FC. En el caso de Chile, existe escasa informacion sobre la relacion entre vitamina D y FC. Objetivo: cuantificar los niveles plasmaticos de vitamina D (NPVD) y relacionarlos con la ubicacion anatomica de la FC. Métodos: estudio transversal. 222 adultos mayores chilenos ≥60 anos hospitalizados por FC entre junio de 2014 y junio de 2015. Se utilizaron los datos de ficha clinica de genero, edad, estacionalidad y ubicacion anatomica (FIC = intra, FEC = extracapsular) de la FC. Se midio NPVD y velocidad de filtrado glomerular (VFG) (MDRD- 6). Se utilizaron la prueba de Kolmogorov-Smirnov y pruebas no parametricas. Para determinar la relacion entre NPVD y el tipo de fractura se uso regresion lineal. Resultados: hubo predominio de mujeres (80,6%), la edad promedio fue 80,7 anos (DE=7,8) y se encontro 43,2% de FIC. Los NPVD promedio fueron 13,3 ng/cc (DE=6,7); los sujetos con FIC tienen 4,52 ng/cc menos de vitamina D que aquellos con FEC (p.
Extreme value analysis of annual maximum water levels in the Pearl River Delta, China
Qiang ZHANG; Chong-Yu XU; Yongqin David CHEN; Chun-ling LIU
2009-01-01
We analyzed the statistical properties of water level extremes in the Pearl River Delta using five probability distribution functions. Estimation of para-meters was performed using the L-moment technique.Goodness-of-fit was done based on Kolmogorov-Smirnov's statistic D (K-S D). The research results indicate that Wakeby distribution is the best statistical model for description of statistical behaviors of water level extremes in the study region. Statistical analysis indicates that water levels corresponding to different return periods and associated variability tend to be larger in the landward side of the Pearl River Delta and vice versa. A ridge characterized by higher water level can be identified expanding along the West River and the Modaomen channel, showing the impacts of the hydrologic process of the West River basin. Trough and higher grades of water level changes can be detected in the region drained by Xi'nanyong channel, Dongping channel, and mainstream of Pearl River. The Pearl River Delta region is character-ized by low-lying topography and a highly-advanced socio-economy, and is heavily populated, being prone to flood hazards and flood inundation due to rising sea level and typhoons. Therefore, sound and effective counter-measures should be made for human mitigation to natural hazards such as floods and typhoons.
Statistical Evaluation of HTS Assays for Enzymatic Hydrolysis of β-Keto Esters.
O Buß
Full Text Available β-keto esters are used as precursors for the synthesis of β-amino acids, which are building blocks for some classes of pharmaceuticals. Here we describe the comparison of screening procedures for hydrolases to be used for the hydrolysis of β-keto esters, the first step in the preparation of β-amino acids. Two of the tested high throughput screening (HTS assays depend on coupled enzymatic reactions which detect the alcohol released during ester hydrolysis by luminescence or absorption. The third assay detects the pH shift due to acid formation using an indicator dye. To choose the most efficient approach for screening, we assessed these assays with different statistical methods-namely, the classical Z'-factor, standardized mean difference (SSMD, the Kolmogorov-Smirnov-test, and t-statistics. This revealed that all three assays are suitable for HTS, the pH assay performing best. Based on our data we discuss the explanatory power of different statistical measures. Finally, we successfully employed the pH assay to identify a very fast hydrolase in an enzyme-substrate screening.
Distant star clusters of the Milky Way in MOND
Haghi, H.; Baumgardt, H.; Kroupa, P.
2011-03-01
We determine the mean velocity dispersion of six Galactic outer halo globular clusters, AM 1, Eridanus, Pal 3, Pal 4, Pal 15, and Arp 2 in the weak acceleration regime to test classical vs. modified Newtonian dynamics (MOND). Owing to the nonlinearity of MOND's Poisson equation, beyond tidal effects, the internal dynamics of clusters is affected by the external field in which they are immersed. For the studied clusters, particle accelerations are much lower than the critical acceleration a0 of MOND, but the motion of stars is neither dominated by internal accelerations (ai ≫ ae) nor external accelerations (ae ≫ ai). We use the N-body code N-MODY in our analysis, which is a particle-mesh-based code with a numerical MOND potential solver developed by Ciotti et al. (2006, ApJ, 640, 741) to derive the line-of-sight velocity dispersion by adding the external field effect. We show that Newtonian dynamics predicts a low-velocity dispersion for each cluster, while in modified Newtonian dynamics the velocity dispersion is much higher. We calculate the minimum number of measured stars necessary to distinguish between Newtonian gravity and MOND with the Kolmogorov-Smirnov test. We also show that for most clusters it is necessary to measure the velocities of between 30 to 80 stars to distinguish between both cases. Therefore the observational measurement of the line-of-sight velocity dispersion of these clusters will provide a test for MOND.
Anaerobic performance and alpha-actinin-3 in children
Ramon Cunha Montenegro
2013-12-01
Full Text Available The aim of this research was to compare the anaerobic performance according to RR, RX and XX genetic configurations of alpha-actinin-3 in children. It was a descriptive as comparative study with a sample of soccer players of 111 boys from 7 to 12 years of age. DNA extraction from saliva was used for alpha-actinin-3 poliphormism identification. After that, a 40 meters sprint test was used to determinate the Power and Fatigue Index. The sample was split in three groups: RR (n= 42; RX (n= 58; XX (n= 11. The Kolmogorov-Smirnov test was used to assess data normality. The comparison was done with ANOVA one-way with Scheffé as post-hoc test. Sprinting data from the three groups showed no significant differences. The higher mean of Power was found in RR group, but there were no significant differences in Power and Fatigue Index. Since it was found no significant differences in anaerobic performance among groups, we conclude that in childhood it is not possible to identify high performance using physical tests.
Kowsar Esfandeh
2014-04-01
Full Text Available Background and Aim: Attention has causal role in speech and language processing. Studies are limited about relation between attention and language development. As a result, the purpose of this study was to investigate the difference shifting attention function in children with developmental stuttering and fluent speech.Methods: Thirty children who stutter (21 boys and 9 girls and thirty children who did not stutter (21 boys and 9 girls were evaluated. Shifting attention function was investigated using Wisconsin card sorting test. The data were analyzed via Kolmogorov-Smirnov, independent t, and Mann-Whitney U-tests.Results: Between group analysis showed significant differences for all of the indexes in Wisconsin card sorting test . The number of categories completed in children who stutter was significantly less than that control group (p<0.05. But preservative errors, total errors, total tries, time of test performance and try for first pattern in children who stutter was more than in the control group and data differences were significant for all of the indexes (p<0.05.Conclusion: The findings of this study show that children with and without stuttering are different in shifting attention function and children who stutter have weaker function in shifting attention. The findings were linked to emerging theoretical frameworks of stuttering development and that were taken to suggest a possible role for attention processes in developmental stuttering.
Shahram Hashemnia
2014-09-01
Full Text Available This paper presents an empirical investigation on the effects of occupational stress, psychological stress as well as job burnout on women’s employee performance in city of Karaj, Iran. The proposed study designs a questionnaire in Likert scale and distributes it among all female employees who worked for Bank Maskan in this city. In our survey, employee performance consists of three parts of interpersonal performance, job performance as well as organizational performance. Cronbach alpha has been used to verify the overall questionnaire, all components were within acceptable levels, and the implementation of Kolmogorov-Smirnov test has indicated that the data were not normally distributed. Using Spearman correlation ratio as well as regression techniques, the study has determined that while psychological stress influenced significantly on all three components of employee performance including interpersonal performance, job performance as well as organizational performance, the effect on job performance was greater than the other components. In addition, occupational stress only influences on organizational as well as interpersonal performance. Finally, employee burnout has no impact on any components of employee performance.
Guilherme Moraes Balbim
2012-11-01
Full Text Available This descriptive study was designed to analyze the level of group cohesion and pre-competitive psychological stress of adult volleyball athletes. The subjects consisted of 155 male and female athletes from the state of Parana who played in the JAPS/ 1st division (A, and 2nd division (B. The assessment instruments used were the Group Environment Questionnaire (GEQ and the Volleyball Psychic Stress Test (V-PST. For data analysis, the following tools were used: Cronbach’s alpha, Kolmogorov-Smirnov, Mann-Whitney, one-way Anova, and Tukey’s post hoc (p<0.05. The results revealed that athletes of division A were more negatively influenced by stress factors than the athletes of division B; in terms of individual attraction to the social group (p=0.014 and tasks (p=0016 athletes of division B had higher levels of group cohesion than athletes from division A; athletes with low social cohesion were negatively impacted by factors of "inappropriate physical conditioning" and "excessive nervousness;" athletes with low levels of cohesion for the task were negatively influenced by the factors of "Pressure from other people to win" and positively by the factor "Behavior of the fans in the game outside." It was concluded that group cohesion is demonstrated to be an intervening factor in pre-competitive stress thereby demonstrating that the higher the dispute level, the higher the negative influence of stress.
Gustavo Adolfo Giraldo
2015-07-01
Full Text Available Introduction: Preterm infants (<37 weeks of gestation have low levels of thyroid hormones due to multiple factors. Objective: To evaluate levels of thyroid-stimulation hormone (TSH in the program congenital hypothyroidism (CH newborn screening in a sample of preterm infants in the city of Bogotá, Colombia. Methods: The Secretaría de Salud Distrital screening protocol for CH (blood sample is collected from the umbilical cord in all the newborns remeasured the serum TSH and heel TSH when preterm infants completed 37 weeks of gestation. Results: A total of 59 preterm neonates were rescreened, of which 2 neonates had elevated levels of TSH and 1 neonate had transient hypothyroxinemia. The Kolmogorov-Smirnov 2-sample/bilateral statistical test was used to compare the neonatal TSH levels of preterm and full-term newborns, which do not follow the same distribution. Conclusion: In our pilot study, 2 of the rescreened infants presented high levels of TSH and 1 had transient hyperthyrotropinemia, suggesting the need for rescreening of preterm infants. Additionally, a larger study should be performed to determine the screening cutoff values for preterm newborns.
Water quality trend analysis for the Karoon River in Iran.
Naddafi, K; Honari, H; Ahmadi, M
2007-11-01
The Karoon River basin, with a basin area of 67,000 km(2), is located in the southern part of Iran. Monthly measurements of the discharge and the water quality variables have been monitored at the Gatvand and Khorramshahr stations of the Karoon River on a monthly basis for the period 1967-2005 and 1969-2005 for Gatvand and Khorramshahr stations, respectively. In this paper the time series of monthly values of water quality parameters and the discharge were analyzed using statistical methods and the existence of trends and the evaluation of the best fitted models were performed. The Kolmogorov-Smirnov test was used to select the theoretical distribution which best fitted the data. Simple regression was used to examine the concentration-time relationships. The concentration-time relationships showed better correlation in Khorramshahr station than that of Gatvand station. The exponential model expresses better concentration - time relationships in Khorramshahr station, but in Gatvand station the logarithmic model is more fitted. The correlation coefficients are positive for all of the variables in Khorramshahr station also in Gatvand station all of the variables are positive except magnesium (Mg2+), bicarbonates (HCO3-) and temporary hardness which shows a decreasing relationship. The logarithmic and the exponential models describe better the concentration-time relationships for two stations.
An actuarial approach to retrofit savings in buildings
Subbarao, Krishnappa; Etingov, Pavel V.; Reddy, T. A.
2014-01-01
An actuarial method has been developed for determining energy savings from retrofits from energy use data for a number of buildings. This method should be contrasted with the traditional method of using pre- and post-retrofit data on the same building. This method supports the U.S. Department of Energy Building Performance Database of real building performance data and related tools that enable engineering and financial practitioners to evaluate retrofits. The actuarial approach derives, from the database, probability density functions (PDFs) for energy savings from retrofits by creating peer groups for the user’s pre post buildings. From the energy use distribution of the two groups, the savings PDF is derived. This provides the basis for engineering analysis as well as financial risk analysis leading to investment decisions. Several technical issues are addressed: The savings PDF is obtained from the pre- and post-PDF through a convolution. Smoothing using kernel density estimation is applied to make the PDF more realistic. The low data density problem can be mitigated through a neighborhood methodology. Correlations between pre and post buildings are addressed to improve the savings PDF. Sample size effects are addressed through the Kolmogorov--Smirnov tests and quantile-quantile plots.
Skakun, Sergii; Kussul, Nataliia; Shelestov, Andrii; Kussul, Olga
2014-08-01
In this article, the use of time series of satellite imagery to flood hazard mapping and flood risk assessment is presented. Flooded areas are extracted from satellite images for the flood-prone territory, and a maximum flood extent image for each flood event is produced. These maps are further fused to determine relative frequency of inundation (RFI). The study shows that RFI values and relative water depth exhibit the same probabilistic distribution, which is confirmed by Kolmogorov-Smirnov test. The produced RFI map can be used as a flood hazard map, especially in cases when flood modeling is complicated by lack of available data and high uncertainties. The derived RFI map is further used for flood risk assessment. Efficiency of the presented approach is demonstrated for the Katima Mulilo region (Namibia). A time series of Landsat-5/7 satellite images acquired from 1989 to 2012 is processed to derive RFI map using the presented approach. The following direct damage categories are considered in the study for flood risk assessment: dwelling units, roads, health facilities, and schools. The produced flood risk map shows that the risk is distributed uniformly all over the region. The cities and villages with the highest risk are identified. The proposed approach has minimum data requirements, and RFI maps can be generated rapidly to assist rescuers and decisionmakers in case of emergencies. On the other hand, limitations include: strong dependence on the available data sets, and limitations in simulations with extrapolated water depth values.
A Comparison of Customers` Satisfaction with Aerobics and Bodybuilding in Public and Private Gyms
Seyed Abbas Afsanepurak
2012-01-01
Full Text Available The purpose of the present study is to compare the customers` satisfaction with aerobics and bodybuilding in public and private gyms in Kermanshah-Iran. It was descriptive-survey research. The statistical population were all female private and public customers in aerobics and bodybuilding gyms in Kermanshah. The study sample was 250 female athletes. In order to gather data, a researcher- made questionnaire with the reliability (α = 0.81 was administered.In order to analyze the data, we applied descriptive statistics and inferential statistics including Kolmogrov - Smirnov, t-independent and Friedman rank tests. Data analysis showed that customer satisfaction results between private and public aerobics and bodybuilding gyms for women were significantly different (p0.05. Private gyms and public priorities in terms of customer satisfaction were satisfaction with trainers and gym personnel, satisfaction with the equipment andphysical environment of the gyms, social satisfaction, and satisfaction with services and cultural facilities in the gym. Overall customer satisfaction in the private gyms was higher than public gyms.
L. Rezaei Sofi
2015-04-01
Full Text Available Introduction & Objectives: Surface roughness affects beauty, hygiene, plaque retention and health of the gingival adjacent to the composite restoration. Many people use bleaching agents to beautify their teeth that may lead to changes in surface roughness. This study was designed to compare the silorane and methacrylate-based composites in bleached teeth. Materials & Methods: In this experimental study 48 composite resin disks were prepared and divided into 4 groups: P90, Z250, Z250XT and Z350XT (n=12. To determine the surface roughness, surface profile measurement of the samples was performed using profilometer. Samples of each diet group underwent 35% hydrogen peroxide in office whitening (Hpmax in three 45-minute sessions one week apart. The secondary instances of surface profile was then measured. The data collected by the Kolmogorov-Smirnov test, one-way ANOVA, Tukey test and paired t- test at a significance level of 0.05 were analyzed using spss16. Results: There was a significant difference (P<0.05 in the surface roughness after bleaching on composite Z350XT with P90 and Z350XT with Z250. The surface roughness of all groups before and after bleaching showed a significant difference (P<0.05. Conclusion: The use of hydrogen peroxide 35% causes a significant increase in the surface roughness of composite P90, Z250, Z250XT and Z350XT. (Sci J Hamadan Univ Med Sci 2015; 22 (1:23-29
Effect of Transformational Leadership on the Creativity of Employees: An Empirical Investigation
K. Teymournejad
2017-02-01
Full Text Available Considering the accelerated pace of developments and advancements in the current era, organizations which have innovative, change-oriented managers and leaders with a long-term vision are more likely to survive the competitive environment. Undoubtedly, leadership behavior and style considering creativity and innovativeness of employees within the organization as an incentive of organizational change considerably influence employee needs and knowledge. The purpose of this study is to determine the effect of transformational leadership involving idealized influence, intellectual stimulation, inspirational motivation and individualized considerations on organizational creativity of employees in the Maskan Bank in Tehran. This study is an applied research using descriptive data analysis. Data is collected by questionnaires. Correlation is used to analyze the hypotheses. The studied population includes all managers and employees of the Maskan Bank in Tehran Province. Using Cochran formula, 127 employees are selected as a sample. Validity and reliability of the questionnaire are calculated by using expert opinion and Cronbach Alpha. The normal distribution of variables is determined by using Kolmogorov-Smirnov test and confirmatory factor analysis; hypotheses are tested by using linear structured relationships. All hypotheses are confirmed; that is, transformational leadership as a whole and each of its dimensions, such as idealized influence, intellectual stimulation, individualized consideration and inspirational motivation have a significant and positive effect on creativity of Maskan Bank employees.
Dos Santos, Núbia Tomain Otoni; Raimundo, Karoline Cipriano; da Silva, Sheila Aparecida; Souza, Lara Andrade; Ferreira, Karoline Carregal; Borges Santo Urbano, Zuleika Ferreira; Gasparini, Andréa Licre Pessina; Bertoncello, Dernival
2017-01-01
The aim of this work was to analyze muscle strength in Pilates novices who used the Reformer equipment during twelve training sessions. Twenty-four healthy young female volunteers, who were non-smokers and did not exercise regularly, were split into a control group (mean age 28 ± 4 years and BMI 24.55 ± 3.21 kg/m(2)) and a training group (mean age 29 ± 4 years and BMI 22.69 ± 2.87 kgm(2)). The data were checked for normality using the Kolmogorov-Smirnov test, and were then analyzed using the t-test (p Pilates group). The corresponding values for the lumbar muscles were 53.83 ± 11.66/53.28 ± 11.14 (control group) and 54.75 ± 10.27/64.80 ± 10.20 (Pilates group). After twelve sessions of Pilates with the Reformer equipment, there were improvements in lumbar extensor and scapular stabilizer strength. Several benefits are reported by practitioners of Pilates, but until now, there has been limited scientific evidence of the improvement of strength in the trunk and limbs after application of the technique. Published by Elsevier Ltd.
B. K. Satriyasa
2014-12-01
Full Text Available Background: caffeine, a methylxanthine derivate, appears to inhibit phosphodiesterase, thereby inhibiting the break down of cAMP and increasing its concentration inside cell. This study aims to assess the effect of caffeine addition in Earles’s Balanced Salt Solution (EBSS on the increase in membrane integrity and acrosome reaction of spermatozoa using swim up method. Methods: This study was carried out at the Clinic of Sexology and Andrology, Sanglah Public Hospital at Denpasar Bali-Indonesia. This study was an experimental study using the design of pre and post test paired control group design. The samples were sperm specimens of eighteen infertile couple male or volunteers who were infertile with age ranged between 20-40 years old. The samples were divided into two groups: treatment group (caffeine + EBSS and control group (EBSS. The data were analysed statistically by normality test (Kolmogorov - Smirnov Goodness of Fit Test, Homogeneity test, and Paired Student’s t test. Results: The results showed that the caffeine addition in EBSS medium could increase significantly (p<0.05. The integrity of the sperm membrane obtained were from 81.30 % to 86.60 % and acrosomal reaction from 82.60% to 89.60% evaluated by hypo-osmotic swelling test (HOS. The conclusion of this study is that addition of caffeine in EBSS medium increases significantly membrane integrity and acrosomal reaction of the human sperm.
Development of Relationship Management in Employer Level (Case Study: Squares Organization of Tehran
Vahid Shahhosseini
2014-01-01
Full Text Available The present study aims at collecting data though a survey for picking a management method in employer level. The Kolmogorov-Smirnov test was adapted in order to examine the data normality. Then, to determine and rate an appropriate management style in employer level, the weight of each criterion per each style was computed. Here, first the de-scaled matrix was calculated, then the Shannon entropy was used to compute coefficient of each criterion and finally, the degree of uncertainty and level of significance for each criterion were computed. Thanks to commonality of criteria for all methods, the coefficient of significance per criterion was multiplied by all styles. The obtained results of sum of the criteria scores were applied for rating and choosing the apt relationship management style in employer level. The main achieved result of the current research is to determine two in-house and design, build, finance and operate for the Squares organization of Tehran based on first and second rank. At the end, some recommendations are provided for establishment of relationship management in employer level according to two relationship management methods for the desired organization.
Reynol Valera Morales, Carlos Caballero Menéndez, Fabio Linares Pasos, Roberto Novoa Quiñones, Enrique Casanovas Cosío.
2005-06-01
Full Text Available La investigación se desarrolló en unidades de producción lechera de la Empresa Pecuaria “El Tablón” en la provincia de Cienfuegos. Se determinó el efecto del REYLAC sobre la calidad de la leche en rebaños afectados de mastitis subclínica bovina, mediante las variables cuartos enfermos, reacción a la prueba de California y el conteo de células somáticas. Los datos obtenidos de un diseño completamente aleatorizado se analizaron mediante tabla de contingencia, prueba de chi-cuadrado de Pearson, Kolmorogov Smirnov para determinar la distribución de las muestras de variables numéricas, modelos lineales generales con covarianza y pruebas de regresión y t de STUDENT para muestras independientes y relacionadas. Obteniéndose una disminución en la severidad de presentación del proceso inflamatorio de la glándula mamaria con dependencia directa al tratamiento aplicado, expresado en un 68 % de la variabilidad del conteo de células somáticas.
Quantifying cognitive state from EEG using dependence measures.
Fadlallah, Bilal; Seth, Sohan; Keil, Andreas; Príncipe, José
2012-10-01
The exquisite human ability to perceive facial features has been explained by the activity of neurons particularly responsive to faces, found in the fusiform gyrus and the anterior part of the superior temporal sulcus. This study hypothesizes and demonstrates that it is possible to automatically discriminate face processing from processing of a simple control stimulus based on processed EEGs in an online fashion with high temporal resolution using measures of statistical dependence applied on steady-state visual evoked potentials. Correlation, mutual information, and a novel measure of association, referred to as generalized measure of association (GMA), were applied on filtered current source density data. Dependences between channel locations were assessed for two separate conditions elicited by distinct pictures (a face and a Gabor grating) flickering at a rate of 17.5 Hz. Filter settings were chosen to minimize the distortion produced by bandpassing parameters on dependence estimation. Statistical analysis was performed for automated stimulus classification using the Kolmogorov-Smirnov test. Results show active regions in the occipito-parietal part of the brain for both conditions with a greater dependence between occipital and inferotemporal sites for the face stimulus. GMA achieved a higher performance in discriminating the two conditions. Because no additional face-like stimuli were examined, this study established a basic difference between one particular face and one nonface stimulus. Future work may use additional stimuli and experimental manipulations to determine the specificity of the current connectivity results.
Ahmann, D L; Schaid, D J; Bisel, H F; Hahn, R G; Edmonson, J H; Ingle, J N
1987-12-01
Since current clinical trials assessing new agents occur in patients with advanced breast cancer having failed one and sometimes many polychemotherapy programs, these new agents may not be given a fair trial. In an effort to assess the possibility of using an alternative study design, we analyzed older clinical trials that used a controlled study design, randomizing between a single new drug and an established polychemotherapy program with a cross-over design upon failure. We were interested in noting that the pooled data did display a slight survival advantage (median 3.7 months) for the group receiving polychemotherapy as initial therapy. The survival distributions were clearly not significant using the log rank test, but did approach significance using the Smirnov. It is apparent that, while some slight advantage does occur for that group of patients receiving initial polychemotherapy, the magnitude of this effect is not great and is short in duration. Serious consideration should be given to the assessment of new agents as first-line therapy, particularly should they have a unique mode of action or lessened morbidities or toxicities.
Risley, John; Moradkhani, Hamid; Hay, Lauren; Markstrom, Steve
2011-01-01
In an earlier global climate-change study, air temperature and precipitation data for the entire twenty-first century simulated from five general circulation models were used as input to precalibrated watershed models for 14 selected basins across the United States. Simulated daily streamflow and energy output from the watershed models were used to compute a range of statistics. With a side-by-side comparison of the statistical analyses for the 14 basins, regional climatic and hydrologic trends over the twenty-first century could be qualitatively identified. Low-flow statistics (95% exceedance, 7-day mean annual minimum, and summer mean monthly streamflow) decreased for almost all basins. Annual maximum daily streamflow also decreased in all the basins, except for all four basins in California and the Pacific Northwest. An analysis of the supply of available energy and water for the basins indicated that ratios of evaporation to precipitation and potential evapotranspiration to precipitation for most of the basins will increase. Probability density functions (PDFs) were developed to assess the uncertainty and multimodality in the impact of climate change on mean annual streamflow variability. Kolmogorov?Smirnov tests showed significant differences between the beginning and ending twenty-first-century PDFs for most of the basins, with the exception of four basins that are located in the western United States. Almost none of the basin PDFs were normally distributed, and two basins in the upper Midwest had PDFs that were extremely dispersed and skewed.
Production of keV Sterile Neutrinos in Supernovae: New Constraints and Gamma Ray Observables
Argüelles, Carlos A; Kopp, Joachim
2016-01-01
We study the production of sterile neutrinos in supernovae, focusing in particular on the keV--MeV mass range, which is the most interesting range if sterile neutrinos are to account for the dark matter in the Universe. We argue that in this mass range, the production of sterile neutrinos can be strongly enhanced by a Mikheyev--Smirnov--Wolfenstein (MSW) resonance, so that a substantial flux is expected to emerge from a supernova, even if vacuum mixing angles between active and sterile neutrinos are tiny. Using energetics arguments, this yields limits on the sterile neutrino parameter space that reach down to mixing angles on the order of $\\sin^2 2\\theta \\lesssim 10^{-14}$ and are up to several orders of magnitude stronger than those from X-ray observations. We also compute the flux of $\\mathcal{O}(\\text{MeV})$ photons expected from the decay of sterile neutrinos produced in supernovae, but find that it is beyond current observational reach even for a nearby supernova.
Bugrimenko E.A.,
2016-07-01
Full Text Available The article introduces the reader the main content of report presented at the XII Elkonin Readings (4th March, 2016. Elkonin Readings takes place each 2 years in Psychological Institute, Russian Academy of education. This year they are focused on the problem of “Mediation and development”. Speakers from different institutions presented their approaches to solving these problems. The theoretical foundation of the new understanding of the relationship of functional genesis and ontogenesis, buildings mediation activities, proximal development areas have been disclosed in the articles of V.V. Rubtsov, D.B. Elkonin, P.G. Nezhnov. The new conditions for mediation were created on the basis of the different materials (games, reading, and spatial image of “self” according to an experimental practice of teaching and correction of self- development. Developing of creative ways of mediation were mentioned in the articles of L.I. Elkoninov, E.O. Smirnov, E.A. Abdulaeva, E.A. Bugrimenko, N.U. Mangutov, that meet actual problems for modern children.
Sujadi, Imam; Kurniasih, Rini; Subanti, Sri
2017-05-01
In the era of 21st century learning, it needs to use technology as a learning media. Using Edmodo as a learning media is one of the options as the complement in learning process. However, this research focuses on the effectiveness of learning material using Edmodo. The aim of this research to determine whether the level of student's probabilistic thinking that use learning material with Edmodo is better than the existing learning materials (books) implemented to teach the subject of students grade 8th. This is quasi-experimental research using control group pretest and posttest. The population of this study was students grade 8 of SMPN 12 Surakarta and the sampling technique used random sampling. The analysis technique used to examine two independent sample using Kolmogorov-Smirnov test. The obtained value of test statistic is M=0.38, since 0.38 is the largest tabled critical one-tailed value M0.05=0.011. The result of the research is the learning materials with Edmodo more effectively to enhance the level of probabilistic thinking learners than the learning that use the existing learning materials (books). Therefore, learning material using Edmodo can be used in learning process. It can also be developed into another learning material through Edmodo.
Antiferromagnetic Resonance in Multiferroic YMnO3 and LuMnO3
Zvyagin, Sergei
2009-03-01
Multiferroic rare-earth manganites have attracted much attention because of the coexistence of ferroelectric and magnetic orders. Combining conventional far-infrared Fourier-transform and THz-range free electron laser electron spin resonance (ESR) spectroscopy techniques, magnetic excitations in hexagonal multiferroic YMnO3 and LuMnO3 in the antiferromagnetically (AFM) ordered phase have been studied. The gap in the excitation spectrum (˜42 and ˜48 cm-1 for YMnO3 and LuMnO3, respectively) was observed directly. Similar slope of the frequency-field dependences of AFM resonance modes, ˜ 0.5 cm-1/T, was revealed for both compounds. A fine structure of AFM resonance absorption has been revealed by means of high-resolution ESR techniques, which can be explained taking into account a finite interaction between the neighboring Mn^3+ layers. The work was done in collaboration with M. Ozerov, D. Kamensky, E. Cizm'ar, J. Wosnitza, A.K. Kolezhuk, D. Smirnov, H.D. Zhou, and C.R. Wiebe.
Beltman, J G M; de Haan, A; Haan, H; Gerrits, H L; van Mechelen, W; Sargeant, A J
2004-08-01
This study investigated the recruitment of type I, IIA and IIAX fibres after seven isometric contractions at 40, 70 and 100% maximal voluntary knee extension torque (MVC, 1 s on/1 s off). Biopsies of the vastus lateralis muscle were collected from seven subjects at rest and immediately post-exercise. Fibre fragments were dissected from the freeze-dried samples and characterized as type I, IIA and IIAX using mATPase staining. Phosphocreatine (PCr) and creatine (Cr) content were measured in the remaining part of characterized fibres. A decline in the ratio of PCr to Cr (PCr/Cr) was used as an indication of activation. The mean peak torques were, respectively, 39 (2), 72 (2) and 87 (6)% MVC. Cumulative distributions of type I and IIA fibres were significantly shifted to lower PCr/Cr ratios at all intensities (Kolmogorov-Smirnov test, P<0.05). The cumulative distribution of type IIAX fibres showed a significant leftward shift only at 87% MVC ( P<0.05). A hierarchical order of fibre activation with increasing intensity of exercise was found, with some indication of rate coding for type I and IIA fibres. Evidence for activation of type IIAX fibres was only found at 87% MVC.
Hazarika, Deepika; Nath, Vijay Kumar; Bhuyan, Manbendra
2016-12-01
A new Lapped transform domain SAR image despeckling algorithm using a two-state Gaussian mixture probability density function that uses local parameters for the mixture model, is proposed. The use of lapped orthogonal transform (LOT) is motivated by its low computational complexity and robustness to oversmoothing. It is shown that the dyadic rearranged LOT coefficients of logarithmically transformed SAR images can be well approximated using two-state Gaussian mixture distribution compared to Laplacian, Gamma, generalized Gaussian and Cauchy distributions, based on the Kolmogorov-Smirnov (KS) goodness of fit test. The LOT coefficients of speckle noise are modeled using zero mean Gaussian distributions. A maximum a posteriori (MAP) estimator within Bayesian framework is developed using this proposed prior distribution and is used to restore the noisy LOT coefficients. The parameters of mixture distribution are estimated using the expectation-maximization algorithm. This paper presents a new technique to identify LOT modulus maxima which allows us to classify LOT coefficients into the edge and non edge coefficients. The classified edge coefficients are kept unmodified by the proposed algorithm whereas the noise-free estimates of non-edge coefficients are obtained using Bayesian MAP estimator developed using two state Gaussian mixture distribution with local parameters. Finally the proposed technique is combined with the cycle spinning scheme to further improve the despeckling performance. Experimental results show that the proposed method very efficiently reduces speckle in homogeneous regions while preserving more edge structures compared to some recent well known methods.
Lai, Hsin-Yi; Chen, You-Yin; Lin, Sheng-Huang; Lo, Yu-Chun; Tsang, Siny; Chen, Shin-Yuan; Zhao, Wan-Ting; Chao, Wen-Hung; Chang, Yao-Chuan; Wu, Robby; Shih, Yen-Yu I.; Tsai, Sheng-Tsung; Jaw, Fu-Shan
2011-06-01
Automatic spike sorting is a prerequisite for neuroscience research on multichannel extracellular recordings of neuronal activity. A novel spike sorting framework, combining efficient feature extraction and an unsupervised clustering method, is described here. Wavelet transform (WT) is adopted to extract features from each detected spike, and the Kolmogorov-Smirnov test (KS test) is utilized to select discriminative wavelet coefficients from the extracted features. Next, an unsupervised single linkage clustering method based on grey relational analysis (GSLC) is applied for spike clustering. The GSLC uses the grey relational grade as the similarity measure, instead of the Euclidean distance for distance calculation; the number of clusters is automatically determined by the elbow criterion in the threshold-cumulative distribution. Four simulated data sets with four noise levels and electrophysiological data recorded from the subthalamic nucleus of eight patients with Parkinson's disease during deep brain stimulation surgery are used to evaluate the performance of GSLC. Feature extraction results from the use of WT with the KS test indicate a reduced number of feature coefficients, as well as good noise rejection, despite similar spike waveforms. Accordingly, the use of GSLC for spike sorting achieves high classification accuracy in all simulated data sets. Moreover, J-measure results in the electrophysiological data indicating that the quality of spike sorting is adequate with the use of GSLC.
Statistical distribution of rainfall in Uttarakhand, India
Kumar, Vikram; Shanu; Jahangeer
2017-07-01
Understanding of rainfall is an important issue for Uttarakhand, India which having varied topography and due to that extreme rainfall causes quick runoff which warns structural and functional safety of large structures and other natural resources. In this study, an attempt has been made to determine the best-fit distribution of the annual series of rainfall data for the period of 1991-2002 of 13 districts of Uttarakhand. A best-fit distribution such as Chi-squared, Chi-squared (2P), exponential, exponential (2P), gamma, gamma (3P), gen. extreme value (GEV), log-Pearson 3, Weibull, Weibull (3P) distributions was applied. Comparisons of best distributions were based on the use of goodness-of-fit tests such as Kolmogorov-Smirnov, Anderson-Darling, and Chi squared. Results showed that the Weibull distribution performed the best with 46% of the total district, while the second best distribution was Chi squared (2P) and log-Pearson. The results of this study would be useful to the water resource engineers, policy makers and planners for the agricultural development and conservation of natural resources of Uttarakhand.
Seasonal variation of fecal indicator bacteria in storm events within the US stormwater database.
Pan, Xubin; Jones, Kim D
2012-01-01
Bacteria are one of the major causes of surface water impairments in the USA. Over the past several years, best management practices, including detention basins, manufactured devices, grass swales, filters and bioretention cells have been used to remove bacteria and other pollutants from stormwater runoff. However, there are data gaps in the comprehensive studies of bacteria concentrations in stormwater runoff. In this paper, the event mean concentration (EMC) of fecal indicator bacteria (Enterococcus, Escherichia coli, fecal Streptococcus group bacteria, and fecal coliform) across the USA was retrieved from the international stormwater best management practices database to analyze the seasonal variations of inflow and outflow event mean concentrations and removal efficiencies. The Kruskal-Wallis test was employed to determine the seasonal variations of bacteria indicator concentrations and removals, and the two-sample Kolmogorov-Smirnov test was used for comparing different seasonal outcomes. The results indicate that all the inflow EMC of FIB in stormwater runoff is above the water quality criteria. The seasonal differences of fecal Streptococcus group bacteria and fecal coliform are significant. Summer has the potential to increase the bacteria EMC and illustrate the seasonal differences.
Diferencias en la condición física en niños de entornos rurales y urbanos
Ernesto De la Cruz-S\\u00E1nchez
2012-01-01
Full Text Available El objetivo de este trabajo es el estudio de la condición física relacionada con la salud y el contexto poblacional en una muestra de niños. Un total de 293 estudiantes tomaron parte en este trabajo (137 niños y 156 niñas. Después de recibir el consentimiento informado, se valoró su salud relacionada con la condición física a través de una versión abreviada de la Batería Eurofit que incluía el IMC, salto horizontal, Sit and Reach (flexibilidad, fuerza de prensión de mano así como carrera de ida y vuelta de 20 metros. Para establecer la relación entre las diferentes variables se realizó la prueba estadística Kolmogorov-Smirnov y una prueba t para muestras independientes. Los resultados de este estudio indican que los niños escolares que viven en áreas rurales poseen una mejor forma física que aquellos que viven en zonas urbanas.
Di Bari, P.; Foot, R.; Volkas, R. R.; Wong, Y. Y. Y.
2001-08-01
We comment on the recent paper by A.D. Dolgov, S.H. Hansen, S. Pastor and D.V. Semikoz (DHPS) [Astropart. Phys. 14 (2000) 79] on the generation of neutrino asymmetries from active-sterile neutrino oscillations. We demonstrate that the approximate asymmetry evolution equation obtained therein is an expansion, up to a minor discrepancy, of the well-established static approximation equation, valid only when the supposedly new higher order correction term is small. In the regime where this so-called "back-reaction" term is large and artificially terminates the asymmetry growth, their evolution equation ceases to be a faithful approximation to the quantum kinetic equations simply because pure Mikheyev-Smirnov-Wolfenstein (MSW) transitions have been neglected. At low temperatures the MSW effect is the dominant asymmetry amplifier. Neither the static nor the DHPS approach contains this important physics. Therefore we conclude that the DHPS results have sufficient veracity at the onset of explosive asymmetry generation, but are invalid in the ensuing low temperature epoch where MSW conversions are able to enhance the asymmetry to values of order 0.2-0.37. DHPS do claim to find a significant final asymmetry for very large δm2 values. However, for this regime the effective potential they employed is not valid.
Status of the MSW Solutions of the Solar Neutrino Problem
González-Garciá, M Concepción; Peña-Garay, C; Valle, José W F
2000-01-01
We present an updated global analysis of two-flavor MSW solutions to the solar neutrino problem in terms of conversions of nu_e into active or sterile neutrinos. We perform a fit to the full data set corresponding to the 708-day Super-Kamiokande data sample as well as to Chlorine, GALLEX and SAGE experiments. We use all measured total event rates as well as Super-Kamiokande data on the zenith angle dependence, energy spectrum and seasonal variation of the events. For conversions into active neutrinos we find that, although the data on the total event rates favours the Small Mixing Angle (SMA) solution, once the full data set is included both SMA and Large Mixing Angle (LMA) solutions give an equivalent fit to the data. The best-fit points for the combined analysis are Delta m^2=3.6 10^{-5} eV^2 sin^2(2theta)=0.8 with chi^2_min=36.3/30 d.o.f and Delta m^2=6.3~ 10^{-6} eV^2 and sin^2(2theta)=4.5 10^{-3} with chi^2_min=37.7/30 d.o.f. In contrast with the earlier 504-day study of Bahcall-Krastev-Smirnov our resul...
Heavy rainfall equations for Santa Catarina, Brazil
Álvaro José Back
2011-12-01
Full Text Available Knowledge of intensity-duration-frequency (IDF relationships of rainfall events is extremely important to determine the dimensions of surface drainage structures and soil erosion control. The purpose of this study was to obtain IDF equations of 13 rain gauge stations in the state of Santa Catarina in Brazil: Chapecó, Urussanga, Campos Novos, Florianópolis, Lages, Caçador, Itajaí, Itá, Ponte Serrada, Porto União, Videira, Laguna and São Joaquim. The daily rainfall data charts of each station were digitized and then the annual maximum rainfall series were determined for durations ranging from 5 to 1440 min. Based on these, with the Gumbel-Chow distribution, the maximum rainfall was estimated for durations ranging from 5 min to 24 h, considering return periods of 2, 5, 10, 20, 25, 50, and 100 years,. Data agreement with the Gumbel-Chow model was verified by the Kolmogorov-Smirnov test, at 5 % significance level. For each rain gauge station, two IDF equations of rainfall events were adjusted, one for durations from 5 to 120 min and the other from 120 to 1440 min. The results show a high variability in maximum intensity of rainfall events among the studied stations. Highest values of coefficients of variation in the annual maximum series of rainfall were observed for durations of over 600 min at the stations of the coastal region of Santa Catarina.
Duration-frequency relationships of heavy rainfall in Santa Catarina, Brazil
Álvaro José Back
2012-06-01
Full Text Available The purpose of this study was to adjust equations that establish relationships between rainfall events with different duration and data from weather stations in the state of Santa Catarina, Brazil. In this study, the relationships between different duration heavy rainfalls from 13 weather stations of Santa Catarina were analyzed. From series of maximum annual rainfalls, and using the Gumbel-Chow distribution, the maximum rainfall for durations between 5 min and 24 h were estimated considering return periods from 2 to 100 years. The data fit to the Gumbel-Chow model was verified by the Kolmogorov-Smirnov test at 5 % significance. The coefficients of Bell's equation were adjusted to estimate the relationship between rainfall duration t (min and the return period T (y in relation to the maximum rainfall with a duration of 1 hour and a 10 year return period. Likewise, the coefficients of Bell's equation were adjusted based on the maximum rainfall with a duration of 1 day and a 10 year return period. The results showed that these relationships are viable to estimate short-duration rainfall events at locations where there are no rainfall records.
Schutte, Willem D.; Swanepoel, Jan W. H.
2016-09-01
An automated tool to derive the off-pulse interval of a light curve originating from a pulsar is needed. First, we derive a powerful and accurate non-parametric sequential estimation technique to estimate the off-pulse interval of a pulsar light curve in an objective manner. This is in contrast to the subjective `eye-ball' (visual) technique, and complementary to the Bayesian Block method which is currently used in the literature. The second aim involves the development of a statistical package, necessary for the implementation of our new estimation technique. We develop a statistical procedure to estimate the off-pulse interval in the presence of noise. It is based on a sequential application of p-values obtained from goodness-of-fit tests for uniformity. The Kolmogorov-Smirnov, Cramér-von Mises, Anderson-Darling and Rayleigh test statistics are applied. The details of the newly developed statistical package SOPIE (Sequential Off-Pulse Interval Estimation) are discussed. The developed estimation procedure is applied to simulated and real pulsar data. Finally, the SOPIE estimated off-pulse intervals of two pulsars are compared to the estimates obtained with the Bayesian Block method and yield very satisfactory results. We provide the code to implement the SOPIE package, which is publicly available at http://CRAN.R-project.org/package=SOPIE (Schutte).
An Investigation of Empathic Tendencies and Self-Concepts of Secondary School Students
Güneş SALI
2013-10-01
Full Text Available : The aim of this study was to investigate empathic tendencies and self-concepts of secondary school students (6, 7 and 8th graders according to certain variables and possible relationships between empathic tendency and self-concept. Data were collected by means of the General Information Form, KA-SI Empathic Tendency Scale for Children and Adolescents-Adolescent Form, and Piers-Harris Children's Self Concept Scale. To analyze the data, Kolmogorov-Smirnov test, two-way analysis of variance (ANOVA, Scheffe test were done and correlation coefficients were calculated. Results of the study showed that type of school attendance and gender had significant effect on the “Emotional Empathy” and “Cognitive Empathy” sub-scores and the “Total Empathy” scores. Grade level had significant impact on the “Cognitive Empathy” sub-score, though. It was determined that type of attendance and grade level had significant effect on the “Self-Concept” score. For all three types of school attendance, positive correlations were found between the “Cognitive Empathy” and “Total Empathy” scores and the “Self-Concept” score.
Where to Dig for Fossils: Combining Climate-Envelope, Taphonomy and Discovery Models.
Block, Sebastián; Saltré, Frédérik; Rodríguez-Rey, Marta; Fordham, Damien A; Unkel, Ingmar; Bradshaw, Corey J A
2016-01-01
Fossils represent invaluable data to reconstruct the past history of life, yet fossil-rich sites are often rare and difficult to find. The traditional fossil-hunting approach focuses on small areas and has not yet taken advantage of modelling techniques commonly used in ecology to account for an organism's past distributions. We propose a new method to assist finding fossils at continental scales based on modelling the past distribution of species, the geological suitability of fossil preservation and the likelihood of fossil discovery in the field, and apply it to several genera of Australian megafauna that went extinct in the Late Quaternary. Our models predicted higher fossil potentials for independent sites than for randomly selected locations (mean Kolmogorov-Smirnov statistic = 0.66). We demonstrate the utility of accounting for the distribution history of fossil taxa when trying to find the most suitable areas to look for fossils. For some genera, the probability of finding fossils based on simple climate-envelope models was higher than the probability based on models incorporating current conditions associated with fossil preservation and discovery as predictors. However, combining the outputs from climate-envelope, preservation, and discovery models resulted in the most accurate predictions of potential fossil sites at a continental scale. We proposed potential areas to discover new fossils of Diprotodon, Zygomaturus, Protemnodon, Thylacoleo, and Genyornis, and provide guidelines on how to apply our approach to assist fossil hunting in other continents and geological settings.
Social network sampling using spanning trees
Jalali, Zeinab S.; Rezvanian, Alireza; Meybodi, Mohammad Reza
2016-12-01
Due to the large scales and limitations in accessing most online social networks, it is hard or infeasible to directly access them in a reasonable amount of time for studying and analysis. Hence, network sampling has emerged as a suitable technique to study and analyze real networks. The main goal of sampling online social networks is constructing a small scale sampled network which preserves the most important properties of the original network. In this paper, we propose two sampling algorithms for sampling online social networks using spanning trees. The first proposed sampling algorithm finds several spanning trees from randomly chosen starting nodes; then the edges in these spanning trees are ranked according to the number of times that each edge has appeared in the set of found spanning trees in the given network. The sampled network is then constructed as a sub-graph of the original network which contains a fraction of nodes that are incident on highly ranked edges. In order to avoid traversing the entire network, the second sampling algorithm is proposed using partial spanning trees. The second sampling algorithm is similar to the first algorithm except that it uses partial spanning trees. Several experiments are conducted to examine the performance of the proposed sampling algorithms on well-known real networks. The obtained results in comparison with other popular sampling methods demonstrate the efficiency of the proposed sampling algorithms in terms of Kolmogorov-Smirnov distance (KSD), skew divergence distance (SDD) and normalized distance (ND).
Lai, Kwang-Chang [Center for General Education, Chang Gung University,Kwei-Shan, Taoyuan, 333, Taiwan (China); Leung Center for Cosmology and Particle Astrophysics (LeCosPA), National Taiwan University, Taipei, 106, Taiwan (China); Lee, Fei-Fan [Institute of Physics, National Chiao Tung University,Hsinchu, 300, Taiwan (China); Lee, Feng-Shiuh [Department of Electrophysics, National Chiao Tung University,Hsinchu, 300, Taiwan (China); Lin, Guey-Lin [Leung Center for Cosmology and Particle Astrophysics (LeCosPA), National Taiwan University, Taipei, 106, Taiwan (China); Institute of Physics, National Chiao Tung University,Hsinchu, 300, Taiwan (China); Liu, Tsung-Che [Leung Center for Cosmology and Particle Astrophysics (LeCosPA), National Taiwan University, Taipei, 106, Taiwan (China); Yang, Yi [Department of Electrophysics, National Chiao Tung University,Hsinchu, 300, Taiwan (China)
2016-07-22
The neutrino mass hierarchy is one of the neutrino fundamental properties yet to be determined. We introduce a method to determine neutrino mass hierarchy by comparing the interaction rate of neutral current (NC) interactions, ν(ν-bar)+p→ν(ν-bar)+p, and inverse beta decays (IBD), ν-bar{sub e}+p→n+e{sup +}, of supernova neutrinos in scintillation detectors. Neutrino flavor conversions inside the supernova are sensitive to neutrino mass hierarchy. Due to Mikheyev-Smirnov-Wolfenstein effects, the full swapping of ν-bar{sub e} flux with the ν-bar{sub x} (x=μ, τ) one occurs in the inverted hierarchy, while such a swapping does not occur in the normal hierarchy. As a result, more high energy IBD events occur in the detector for the inverted hierarchy than the high energy IBD events in the normal hierarchy. By comparing IBD interaction rate with the mass hierarchy independent NC interaction rate, one can determine the neutrino mass hierarchy.
Pérez-Sánchez, Julio; Senent-Aparicio, Javier
2017-08-01
Dry spells are an essential concept of drought climatology that clearly defines the semiarid Mediterranean environment and whose consequences are a defining feature for an ecosystem, so vulnerable with regard to water. The present study was conducted to characterize rainfall drought in the Segura River basin located in eastern Spain, marked by the self seasonal nature of these latitudes. A daily precipitation set has been utilized for 29 weather stations during a period of 20 years (1993-2013). Furthermore, four sets of dry spell length (complete series, monthly maximum, seasonal maximum, and annual maximum) are used and simulated for all the weather stations with the following probability distribution functions: Burr, Dagum, error, generalized extreme value, generalized logistic, generalized Pareto, Gumbel Max, inverse Gaussian, Johnson SB, Log-Logistic, Log-Pearson 3, Triangular, Weibull, and Wakeby. Only the series of annual maximum spell offer a good adjustment for all the weather stations, thereby gaining the role of Wakeby as the best result, with a p value means of 0.9424 for the Kolmogorov-Smirnov test (0.2 significance level). Probability of dry spell duration for return periods of 2, 5, 10, and 25 years maps reveal the northeast-southeast gradient, increasing periods with annual rainfall of less than 0.1 mm in the eastern third of the basin, in the proximity of the Mediterranean slope.
ANALISIS KOMPARATIF KINERJA KEUANGAN PERBANKAN ASEAN SETELAH KRISIS GLOBAL
I Gusti Ayu Purnamawati
2017-03-01
Full Text Available The globalization of world trade era presented a competitive challenge for the banking sector, especially thecountries that were members of the Association of Southeast Asian Nations (ASEAN such as: Indonesia,Thailand, and Malaysia. The banking sector was very vulnerable to the economic turmoil that often occurred.The uncertainty in the global economic recovery resulted a high risk in the financial sector for the importanceof the bank’s financial performance assessment for the stakeholders. This study aimed to compare the financialperformance of the banking sector in Indonesia, Thailand, and Malaysia by using financial ratios. The samplewas limited to banks that fell into the category of 5 largest banks in Indonesia, Thailand, and Malaysia during2009-2012. The research data was secondary data obtained from the Indonesia Stock Exchange. The analysismethod used was Kolmogorov Smirnov test for data normality test and one-way ANOVA parametric test. Theresults showed that: (1 There were significant differences of indicators ROA, ROE and LDR in the financialperformance of banks in Indonesia, Thailand and Malaysia; (2 There was no difference of CAR indicator inbanking finance in Indonesia, Thailand and Malaysia.
Earthquake forecast enrichment scores
Christine Smyth
2012-03-01
Full Text Available The Collaboratory for the Study of Earthquake Predictability (CSEP is a global project aimed at testing earthquake forecast models in a fair environment. Various metrics are currently used to evaluate the submitted forecasts. However, the CSEP still lacks easily understandable metrics with which to rank the universal performance of the forecast models. In this research, we modify a well-known and respected metric from another statistical field, bioinformatics, to make it suitable for evaluating earthquake forecasts, such as those submitted to the CSEP initiative. The metric, originally called a gene-set enrichment score, is based on a Kolmogorov-Smirnov statistic. Our modified metric assesses if, over a certain time period, the forecast values at locations where earthquakes have occurred are significantly increased compared to the values for all locations where earthquakes did not occur. Permutation testing allows for a significance value to be placed upon the score. Unlike the metrics currently employed by the CSEP, the score places no assumption on the distribution of earthquake occurrence nor requires an arbitrary reference forecast. In this research, we apply the modified metric to simulated data and real forecast data to show it is a powerful and robust technique, capable of ranking competing earthquake forecasts.
Resampling methods for particle filtering:identical distribution, a new method, and comparable study
Tian-cheng LI; Gabriel VILLARRUBIA; Shu-dong SUN; Juan M CORCHADO; Javier BAJO
2015-01-01
Resampling is a critical procedure that is of both theoretical and practical significance for efficient implementation of the particle filter. To gain an insight of the resampling process and the filter, this paper contributes in three further respects as a sequel to the tutorial (Li et al., 2015). First, identical distribution (ID) is established as a general principle for the resampling design, which requires the distribution of particles before and after resampling to be statistically identical. Three consistent met-rics including the (symmetrical) Kullback-Leibler divergence, Kolmogorov-Smirnov statistic, and the sampling variance are introduced for assessment of the ID attribute of resampling, and a corresponding, qualitative ID analysis of representative resampling methods is given. Second, a novel resampling scheme that obtains the optimal ID attribute in the sense of minimum sampling variance is proposed. Third, more than a dozen typical resampling methods are compared via simulations in terms of sample size variation, sampling variance, computing speed, and estimation accuracy. These form a more comprehensive under-standing of the algorithm, providing solid guidelines for either selection of existing resampling methods or new implementations.
STOCHASTIC PRICING MODEL FOR THE REAL ESTATE MARKET: FORMATION OF LOG-NORMAL GENERAL POPULATION
Oleg V. Rusakov
2015-01-01
Full Text Available We construct a stochastic model of real estate pricing. The method of the pricing construction is based on a sequential comparison of the supply prices. We proof that under standard assumptions imposed upon the comparison coefficients there exists an unique non-degenerated limit in distribution and this limit has the lognormal law of distribution. The accordance of empirical distributions of prices to thetheoretically obtained log-normal distribution we verify by numerous statistical data of real estate prices from Saint-Petersburg (Russia. For establishing this accordance we essentially apply the efficient and sensitive test of fit of Kolmogorov-Smirnov. Basing on “The Russian Federal Estimation Standard N2”, we conclude that the most probable price, i.e. mode of distribution, is correctly and uniquely defined under the log-normal approximation. Since the mean value of log-normal distribution exceeds the mode - most probable value, it follows that the prices valued by the mathematical expectation are systematically overstated.
Analisis Pengaruh Variabel-variabel Ekonomi Makro terhadap Return Saham
Sunaryo Sunaryo
2013-05-01
Full Text Available The primary objective of this research is to learn the effecting inflation, interest rate of Indonesian bank certificate, changes of exchange rate, and changes of outstanding money amounts variables with changes of the return Jakarta composite index. Secondary data were collected from Jakarta composite Index, annual Indonesian bank report, Jakarta daily newspaper, and preceding research by using judgment sampling until it got normal distribution data with Kolmogorov-Smirnov test. The results of this research described that inflation, Interest Rate of Indonesian Bank Certificate, and changes of outstanding money variables have not significant effect to the changes of return Jakarta composite index; and changes of exchange rate have significant effect to the changes return of Jakarta composite index. Inflation, interest rate of Indonesian bank certificate, changes of exchange rate, and changes of outstanding money amounts variables have simultaneous significant effect to thechanges return of Jakarta composite index. Topic of this research may continue using other countries or added more than 75.20 % of independence variables.
Entropy-based model for miRNA isoform analysis.
Shengqin Wang
Full Text Available MiRNAs have been widely studied due to their important post-transcriptional regulatory roles in gene expression. Many reports have demonstrated the evidence of miRNA isoform products (isomiRs in high-throughput small RNA sequencing data. However, the biological function involved in these molecules is still not well investigated. Here, we developed a Shannon entropy-based model to estimate isomiR expression profiles of high-throughput small RNA sequencing data extracted from miRBase webserver. By using the Kolmogorov-Smirnov statistical test (KS test, we demonstrated that the 5p and 3p miRNAs present more variants than the single arm miRNAs. We also found that the isomiR variant, except the 3' isomiR variant, is strongly correlated with Minimum Free Energy (MFE of pre-miRNA, suggesting the intrinsic feature of pre-miRNA should be one of the important factors for the miRNA regulation. The functional enrichment analysis showed that the miRNAs with high variation, particularly the 5' end variation, are enriched in a set of critical functions, supporting these molecules should not be randomly produced. Our results provide a probabilistic framework for miRNA isoforms analysis, and give functional insights into pre-miRNA processing.
Analysis of surface hardness of artificially aged resin composites
Denise Cremonezzi Tornavoi
2012-02-01
Full Text Available This study evaluated the effect of artificially accelerated aging (AAA on the surface hardness of eight composite resins: Filtek Z250, Filtek Supreme, 4 Seasons, Herculite, P60, Tetric Ceram, Charisma, and Filtek Z100. Sixteen specimens were made from the test piece of each material, using an 8.0 × 2.0 mm teflon matrix. After 24 hours, eight specimens from each material were submitted to three surface hardness readings using a Shimadzu Microhardness Tester for 5 seconds at a load of 50 gf. The other eight specimens remained in the artificially accelerated aging machine for 382 hours and were submitted to the same surface hardness analysis. The means of each test specimen were submitted to the Kolmogorov-Smirnov test (p > 0.05, ANOVA and Tukey test (p < 0.05. With regard to hardness (F = 86.74, p < 0.0001 the analysis showed significant differences among the resin composite brands. But aging did not influence the hardness of any of the resin composites (F = 0.39, p = 0.53. In this study, there was interaction between the resin composite brand and the aging factors (F = 4.51, p < 0.0002. It was concluded that notwithstanding the type of resin, AAA did not influence surface hardness. However, with regard to hardness there was a significant difference among the resin brands.
Nasrin Mirbastegan
2016-06-01
Full Text Available Introduction: Oral health is an important aspect of caring for hospitalized patients in intensive care unit (ICU. Typically, 48 hours after admission to Intensive care unit, there is a change in mouth flora and dental plaque will be created subsequently. These events make an ideal environment for microbial growth. The aim of this study was to determine the effect of Aloe Vera mouthwash on dental plaque index in patients with tracheal intubation at ICU. Material and Methods: This randomized double blind trail was performed on 79 patients with Tracheal intubation at ICU. Data were gathered using purposive sampling. Participant divided in to the two groups. The experimental group received Aloe Vera mouth wash and control group received Normal Saline mouth wash. The study period was four days. O’leary Plaque index used for collecting data. Kolmogorov-Smirnov, Chi square, paired t-test and independent ttest were used for analyzing data by SPSS 20. Result: The experimental and control groups had similar characteristics except gender. The experimental dental plaque index (56.58±11.91 and Control dental plaque index (56.04±10.46 were similar. The dental plaque index had a significant decrease in experimental group (57.51±9.08 comparing to the control group (62.46±9.46. Conclusion: Aloe Vera mouth wash along with tooth brushing have a significant effect on reducing dental plaque index.
Statistical Evaluation of HTS Assays for Enzymatic Hydrolysis of β-Keto Esters
Dold, S. -M.; Zimmermann, S.; Hamacher, K.; Schmitz, K.; Rudat, J.
2016-01-01
β-keto esters are used as precursors for the synthesis of β-amino acids, which are building blocks for some classes of pharmaceuticals. Here we describe the comparison of screening procedures for hydrolases to be used for the hydrolysis of β-keto esters, the first step in the preparation of β-amino acids. Two of the tested high throughput screening (HTS) assays depend on coupled enzymatic reactions which detect the alcohol released during ester hydrolysis by luminescence or absorption. The third assay detects the pH shift due to acid formation using an indicator dye. To choose the most efficient approach for screening, we assessed these assays with different statistical methods—namely, the classical Z’-factor, standardized mean difference (SSMD), the Kolmogorov-Smirnov-test, and t-statistics. This revealed that all three assays are suitable for HTS, the pH assay performing best. Based on our data we discuss the explanatory power of different statistical measures. Finally, we successfully employed the pH assay to identify a very fast hydrolase in an enzyme-substrate screening. PMID:26730596
Perez-Comas, Jose A.; Skalski, John R. (University of Washington, School Fisheries, Seattle, WA)
1999-07-01
The length of tagged fish is often measured at the release site and at least one downstream detection site for many PIT-tagged releases, enabling the study of growth of a particular salmonid species, run, year-class and rearing type, during their downstream migration. The purpose of this report is to suggest an approach to analyze the in-river growth of PIT-tagged salmonid yearlings. Since the age of the tagged fish is unknown, its growth must be assessed by means of the relationships between the release and recovery sizes of tagged fish, and between those and the time elapsed between release and recovery. Analyses of this type require adequate samples. A simple three-step protocol for selecting adequate data for unbiased samples is provided. Three methods: Walford's lines, Kolmogorov-Smirnov tests and one-tail paired t-tests, are suggested as analytical tools and applied to detect in-river growth from selected samples of PIT-tagged spring chinook yearlings. Finally, the between-sample comparison of growth rates by means of a simple linear model is discussed.
Samaneh Mahvidyzadeh
2012-09-01
Full Text Available Background and Aims: The aim of this study was to evaluate the quality of an experimental hydrofluoric acid (HF for preparation of porcelain and to compare it with two commercial hydrofluoric acids in Iranian trademark. Materials and Methods: A- Evaluation of etch pattern of experimental HF using scanning electron microscope (SEM: 6 feldespathic discs were divided into 3 groups. Each group was etched with related HF (experimental, Ultradent and Kimia for 1 minute. SEM images were recorded at 3 magnifications. B- Bond strength test: 18 feldespathic discs were considered for each acidic group. Then the porcelain surfaces were etched and bonded to composite with unfilled resin. Consequently, the microshear test was done. C- Microleakage test: 54 discs were divided into 3 groups (n=18. Then the porcelain surfaces were etched and bonded to composite with unfilled resin and finally observed under stereomicroscope. The data were analyzed with one-way ANOVA and Smirnov tests. Results: SEM analysis showed no difference between groups in terms of etch pattern. Microshear bond strength values for experimental, Kimia, and Ultradent HF were 28.53 (±4.92, 28.21 (±6.61, and 26.14 (±7.61 MPa, respectively. There was no significant difference between the bond strength of test groups (P0.05. Conclusion: Quality of experimental HF in terms of etch pattern, microshear bond strength and microleakage of composite/porcelain interface was similar to that of two commercial hydrofluoric acids.
Scaling and memory in the return intervals of realized volatility
Ren, Fei; Gu, Gao-Feng; Zhou, Wei-Xing
2009-11-01
We perform return interval analysis of 1-min realized volatility defined by the sum of absolute high-frequency intraday returns for the Shanghai Stock Exchange Composite Index (SSEC) and 22 constituent stocks of SSEC. The scaling behavior and memory effect of the return intervals between successive realized volatilities above a certain threshold q are carefully investigated. In comparison with the volatility defined by the closest tick prices to the minute marks, the return interval distribution for the realized volatility shows a better scaling behavior since 20 stocks (out of 22 stocks) and the SSEC pass the Kolmogorov-Smirnov (KS) test and exhibit scaling behaviors, among which the scaling function for 8 stocks could be approximated well by a stretched exponential distribution revealed by the KS goodness-of-fit test under the significance level of 5%. The improved scaling behavior is further confirmed by the relation between the fitted exponent γ and the threshold q. In addition, the similarity of the return interval distributions for different stocks is also observed for the realized volatility. The investigation of the conditional probability distribution and the detrended fluctuation analysis (DFA) show that both short-term and long-term memory exists in the return intervals of realized volatility.
Mahrokh Imanimoghaddam
2014-09-01
Full Text Available Abstract Introduction: Temporomandibular joint disorders (TMD are the most common disorders of the jaw, and despite their clinical importance, they are not completely understood. This study was aimed to evaluate the changes of temporomandibular joint (TMJ on cone beam computed tomography (CBCT images in disc displacement vs. osteoarthritis of the TMJ. Methods: In this study, 45 patients, including 37 women and 8 men (13-89 years of age, were examined. The patients were selected based on RDC/TMD criteria and group I disorders were excluded from the study. Accordingly, group II consisted of 43 joints with jaw clicking or displaced discs, and group III comprised 46 joints with crepitus. CBCT images in sagittal, coronal, and axial sections were examined to assess osseous changes in terms of flattening, sclerosis, erosion, resorption, and osteophyte formation. Data were analyzed using statistical tests including the chi-square, Mann-Whitney, and Kolmogorov-Smirnov tests with the confidence interval of 95%. Results: Mann-Whitney test for the comparison of mean age between groups II and III was not statistically significant (p value=0.06. A significant differences was found between two (RDC/TMD groups according to the prevalence of condylar erosion, resorption, and osteophyte (p
Cosmological tests with the FSRQ gamma-ray luminosity function
Zeng, Houdun; Melia, Fulvio; Zhang, Li
2016-11-01
The extensive catalogue of gamma-ray selected flat-spectrum radio quasars (FSRQs) produced by Fermi during a four-year survey has generated considerable interest in determining their gamma-ray luminosity function (GLF) and its evolution with cosmic time. In this paper, we introduce the novel idea of using this extensive database to test the differential volume expansion rate predicted by two specific models, the concordance Λ cold dark matter (ΛCDM) and Rh = ct cosmologies. For this purpose, we use two well-studied formulations of the GLF, one based on pure luminosity evolution (PLE) and the other on a luminosity-dependent density evolution (LDDE). Using a Kolmogorov-Smirnov test on one-parameter cumulative distributions (in luminosity, redshift, photon index and source count), we confirm the results of earlier works showing that these data somewhat favour LDDE over PLE; we show that this is the case for both ΛCDM and Rh = ct. Regardless of which GLF one chooses, however, we also show that model selection tools very strongly favour Rh = ct over ΛCDM. We suggest that such population studies, though featuring a strong evolution in redshift, may none the less be used as a valuable independent check of other model comparisons based solely on geometric considerations.
Cosmological Tests with the FSRQ Gamma-ray Luminosity Function
Zeng, Houdun; Zhang, Li
2016-01-01
The extensive catalog of $\\gamma$-ray selected flat-spectrum radio quasars (FSRQs) produced by \\emph{Fermi} during a four-year survey has generated considerable interest in determining their $\\gamma$-ray luminosity function (GLF) and its evolution with cosmic time. In this paper, we introduce the novel idea of using this extensive database to test the differential volume expansion rate predicted by two specific models, the concordance $\\Lambda$CDM and $R_{\\rm h}=ct$ cosmologies. For this purpose, we use two well-studied formulations of the GLF, one based on pure luminosity evolution (PLE) and the other on a luminosity-dependent density evolution (LDDE). Using a Kolmogorov-Smirnov test on one-parameter cumulative distributions (in luminosity, redshift, photon index and source count), we confirm the results of earlier works showing that these data somewhat favour LDDE over PLE; we show that this is the case for both $\\Lambda$CDM and $R_{\\rm h}=ct$. Regardless of which GLF one chooses, however, we also show that...
Mahdokht Taheri
2015-12-01
Full Text Available Introduction: In view of the fact that motivation is linked directly to the learning process and educational achievement, this study endeavored to identify strategies to improve students’ educational achievement motivation at Guilan University of Medical Sciences. Methods: To conduct this descriptive-analytical study, 368 students from Guilan University of Medical Sciences were selected using simple random sampling from 2013-2014. All of the Guilan University of Medical Sciences’ students met the general eligibility criteria except guest students. The questionnaire included five domains of economic, socio-cultural, educational, geo-regional, and personality factors in educational achievement motivation. Through using descriptive and inferential statistics (Kolmogorov-Smirnov, Mann-Whitney U and Kruskal-Wallis tests, the compiled data were analyzed at the significance level of 0.05. Results: Data analysis revealed that socio-cultural factors have the maximum score (64.14 ± 9.92 and geo-regional factors have the minimum score (19.01±3.63 on the participants’ educational achievement motivation. What is more, a significant difference was revealed between educational field and educational effective factors as well as educational level and educational effective factors (p<0.011, p<0.004, respectively. Conclusion: Given that the socio-cultural factors had the maximum score on the students’ educational achievement motivation, it is recommended that university officials take these factors into account, and attempt to plan to provide appropriate strategies to enhance their students’ motivation, specifically their educational achievement motivation.
Lawaf, Shirin; Nasermostofi, Shahbaz; Afradeh, Mahtasadat
2017-01-01
PURPOSE Considering the importance of metal-ceramic bond, the present study aimed to compare the bond strength of ceramics to cobalt-chrome (Co-Cr) alloys made by casting and selective laser melting (SLM). MATERIALS AND METHODS In this in-vitro experimental study, two sample groups were prepared, with one group comprising of 10 Co-Cr metal frameworks fabricated by SLM method and the other of 10 Co-Cr metal frameworks fabricated by lost wax cast method with the dimensions of 0.5 × 3 × 25 mm (following ISO standard 9693). Porcelain with the thickness of 1.1 mm was applied on a 3 × 8-mm central rectangular area of each sample. Afterwards, bond strengths of the samples were assessed with a Universal Testing Machine. Statistical analysis was performed with Kolmogorov-Smirnov test and T-test. RESULTS Bond strength in the conventionally cast group equaled 74.94 ± 16.06 MPa, while in SLM group, it equaled 69.02 ± 5.77 MPa. The difference was not statistically significant (P ≤ .05). CONCLUSION The results indicated that the bond strengths between ceramic and Co-Cr alloys made by casting and SLM methods were not statistically different. PMID:28243392
The influence of endodontic broken stainless steel instruments on the urinary levels of iron.
Saghiri, Mohammad Ali; Asatourian, Armen; Haraji, Afshin; Ramezani, Golam H; Garcia-Godoy, Franklin; Scarbecz, Mark; Sheibani, Nader
2014-06-01
Previous studies on the endodontic broken stainless steel instruments have mainly focused on retrieval of specimens. However, the systemic consequences of the retained separated instruments need an investigation. The current study aimed to evaluate the correlation between broken stainless steel instruments inside the root canal space and the urinary level of iron (Fe) in patients. Sixty near-aged and same-gender patients were selected. Thirty patients in the control group had no endodontic treatment in their history, while the other 30 patients in the endodontic group had broken stainless steel instrument. The urine samples were collected in iron-free containers. All specimens were refrigerated for 1 day and then subjected to Fe level measurement by electrothermal atomic absorption spectrometry. Data were analyzed by Kolmogorov-Smirnov and t tests at P 0.05). There was a positive correlation between age and Fe levels of endodontic and control groups. However, the joint effects of age and sex on Fe levels were different for the two groups. The presence of broken stainless steel instruments inside the root canal space did not elevate the level of Fe in the urine of patients. However, this value was positively correlated with the patient age.
Normal and Extreme Wind Conditions for Power at Coastal Locations in China.
Gao, Meng; Ning, Jicai; Wu, Xiaoqing
2015-01-01
In this paper, the normal and extreme wind conditions for power at 12 coastal locations along China's coastline were investigated. For this purpose, the daily meteorological data measured at the standard 10-m height above ground for periods of 40-62 years are statistically analyzed. The East Asian Monsoon that affects almost China's entire coastal region is considered as the leading factor determining wind energy resources. For most stations, the mean wind speed is higher in winter and lower in summer. Meanwhile, the wind direction analysis indicates that the prevalent winds in summer are southerly, while those in winter are northerly. The air densities at different coastal locations differ significantly, resulting in the difference in wind power density. The Weibull and lognormal distributions are applied to fit the yearly wind speeds. The lognormal distribution performs better than the Weibull distribution at 8 coastal stations according to two judgement criteria, the Kolmogorov-Smirnov test and absolute error (AE). Regarding the annual maximum extreme wind speed, the generalized extreme value (GEV) distribution performs better than the commonly-used Gumbel distribution. At these southeastern coastal locations, strong winds usually occur in typhoon season. These 4 coastal provinces, that is, Guangdong, Fujian, Hainan, and Zhejiang, which have abundant wind resources, are also prone to typhoon disasters.
Normal and Extreme Wind Conditions for Power at Coastal Locations in China.
Meng Gao
Full Text Available In this paper, the normal and extreme wind conditions for power at 12 coastal locations along China's coastline were investigated. For this purpose, the daily meteorological data measured at the standard 10-m height above ground for periods of 40-62 years are statistically analyzed. The East Asian Monsoon that affects almost China's entire coastal region is considered as the leading factor determining wind energy resources. For most stations, the mean wind speed is higher in winter and lower in summer. Meanwhile, the wind direction analysis indicates that the prevalent winds in summer are southerly, while those in winter are northerly. The air densities at different coastal locations differ significantly, resulting in the difference in wind power density. The Weibull and lognormal distributions are applied to fit the yearly wind speeds. The lognormal distribution performs better than the Weibull distribution at 8 coastal stations according to two judgement criteria, the Kolmogorov-Smirnov test and absolute error (AE. Regarding the annual maximum extreme wind speed, the generalized extreme value (GEV distribution performs better than the commonly-used Gumbel distribution. At these southeastern coastal locations, strong winds usually occur in typhoon season. These 4 coastal provinces, that is, Guangdong, Fujian, Hainan, and Zhejiang, which have abundant wind resources, are also prone to typhoon disasters.
Javad A M I R I
2015-06-01
Full Text Available The aim of the present research was to investigate the influence of emplo yees’ professional ethic on their knowledge sharing in the health insurance administration of Kermanshah province. The present research from the aim viewpoint was an applied research and from the method viewpoint was a part of the descriptive researches of the correlation type. The statistical research society included the entire employees’ of the health insurance administration of Kermanshah province, which in 2014 were functional in this organization and the total number of theirs was 114 people. The samp le volume with the assessment of statistical society and with the use of the Korjesi and Morgan table and for the sampling the simple random method with 90 people was selected. The measurement tool of professional ethic was the Kadousire (2009 and measure ment tool of knowledge sharing was the Bennett & Gabriel (2009. The statistical methods included the descriptive statistics and perceptive statistics (Kolmogorov - Smirnov, Pearson correlation and univariate and multivariate regression. The results showed that the professional ethic was effective on the employees’ knowledge sharing. Moreover, the entire dimensions of professional ethic (responsibility, honesty, justice and equity, contest and competitiveness, respect to a customer, sympathy with a customer and observance and respect in relation to the values and social norms lead to the promotion of the knowledge sharing. On the other hand the employees’ responsibility had the highest influence on the knowledge sharing.
Modelling rainfall amounts using mixed-gamma model for Kuantan district
Zakaria, Roslinazairimah; Moslim, Nor Hafizah
2017-05-01
An efficient design of flood mitigation and construction of crop growth models depend upon good understanding of the rainfall process and characteristics. Gamma distribution is usually used to model nonzero rainfall amounts. In this study, the mixed-gamma model is applied to accommodate both zero and nonzero rainfall amounts. The mixed-gamma model presented is for the independent case. The formulae of mean and variance are derived for the sum of two and three independent mixed-gamma variables, respectively. Firstly, the gamma distribution is used to model the nonzero rainfall amounts and the parameters of the distribution (shape and scale) are estimated using the maximum likelihood estimation method. Then, the mixed-gamma model is defined for both zero and nonzero rainfall amounts simultaneously. The formulae of mean and variance for the sum of two and three independent mixed-gamma variables derived are tested using the monthly rainfall amounts from rainfall stations within Kuantan district in Pahang Malaysia. Based on the Kolmogorov-Smirnov goodness of fit test, the results demonstrate that the descriptive statistics of the observed sum of rainfall amounts is not significantly different at 5% significance level from the generated sum of independent mixed-gamma variables. The methodology and formulae demonstrated can be applied to find the sum of more than three independent mixed-gamma variables.
Garrido, Angela Delfina Bittencourt; de Cara, Sueli Patricia Harumi Miyagi; Marques, Marcia Martins; Sponchiado, Emílio Carlos; Garcia, Lucas da Fonseca Roberti; de Sousa-Neto, Manoel Damião
2015-01-01
Background: The constant development of new root canal sealers has allowed the solution of a large number of clinical cases in endodontics, however, cytotoxicity of such sealers must be tested before their validation as filling materials. The aim of this study was to evaluate the cytotoxic effect of a new Copaiba oil-based root canal sealer (Biosealer [BS]) on osteoblast-like Osteo-1 cells. Materials and Methods: The experimental groups were formed according to the culture medium conditioned with the tested sealers, as follows: Control group (CG) (culture medium without conditioning); Sealer 26 (S26) - culture medium + S26; Endofill (EF) - culture medium + EF; AH Plus (AHP) - culture medium + AHP; and BS - culture medium + BS (Copaiba oil-based sealer). The conditioned culture medium was placed in contact with 2 × 104 cells cultivated on 60 mm diameter Petri dishes for 24 h. Then, hemocytometer count was performed to evaluate cellular viability, using Trypan Blue assay. The normal distribution of data was tested by the Kolmogorov-Smirnov test and the values obtained for cellular viability were statistically analyzed (1-way ANOVA, Tukey's test - P 0.05). Conclusion: The Copaiba oil-based root canal sealer presented promising results in terms of cytotoxicity which indicated its usefulness as a root canal sealer. PMID:25878676
Storm surge evolution and its relationship to climate oscillations at Duck, NC
Munroe, Robert; Curtis, Scott
2017-07-01
Coastal communities experience increased vulnerability during storm surge events through the risk of damage to coastal infrastructure, erosion/deposition, and the endangerment of human life. Policy and planning measures attempt to avoid or mitigate storm surge consequences through building codes and setbacks, beach stabilization, insurance rates, and coastal zoning. The coastal emergency management community and public react and respond on shorter time scales, through temporary protection, emergency stockpiling, and evacuation. This study utilizes time series analysis, the Kolmogorov-Smirnov (K-S) test, Pearson's correlation, and the generalized extreme value (GEV) theorem to make the connection between climate oscillation indices and storm surge characteristics intra-seasonally to inter-annually. Results indicate that an El Niño (+ENSO), negative phase of the NAO, and positive phase of the PNA pattern all support longer duration and hence more powerful surge events, especially in winter. Increased surge duration increases the likelihood of extensive erosion, inland inundation, among other undesirable effects of the surge hazard.
Yoga therapy for developing emotional intelligence in mid-life managers.
Ganpat, Tikhe Sham; Nagendra, H R
2011-01-01
Business executives' lives have become a never-ending race against time, technology, and targets. This race creates tension, which leads to dissatisfaction and frustration and eventually manifests itself as psychological and physiological stress with mental and emotional drain. This modern lifestyle intensifies the stress leading to "excessive tension" and consequent deterioration in "executive efficiency". To assess emotional intelligent quotient (EQ) in managers undergoing yoga-based Self Management of Excessive Tension (SMET) program. 72 managers participated in this study which is of "single group pre-post design." The EQ test developed by Prof N. K. Chadha from University of Delhi was administered as pre and post the 5 days of SMET program. Means, standard deviations, Kolmogorov-Smirnov test, and Wilcoxon signed rank test were used to analyze the data. The data analysis showed 72.02% significant increase (PEQ. The results suggest that participation in a SMET program was associated with improvement in EQ and may have implications for "executive efficiency."
Automatic detection of MLC relative position errors for VMAT using the EPID-based picket fence test
Christophides, Damianos; Davies, Alex; Fleckney, Mark
2016-12-01
Multi-leaf collimators (MLCs) ensure the accurate delivery of treatments requiring complex beam fluences like intensity modulated radiotherapy and volumetric modulated arc therapy. The purpose of this work is to automate the detection of MLC relative position errors ⩾0.5 mm using electronic portal imaging device-based picket fence tests and compare the results to the qualitative assessment currently in use. Picket fence tests with and without intentional MLC errors were measured weekly on three Varian linacs. The picket fence images analysed covered a time period ranging between 14-20 months depending on the linac. An algorithm was developed that calculated the MLC error for each leaf-pair present in the picket fence images. The baseline error distributions of each linac were characterised for an initial period of 6 months and compared with the intentional MLC errors using statistical metrics. The distributions of median and one-sample Kolmogorov-Smirnov test p-value exhibited no overlap between baseline and intentional errors and were used retrospectively to automatically detect MLC errors in routine clinical practice. Agreement was found between the MLC errors detected by the automatic method and the fault reports during clinical use, as well as interventions for MLC repair and calibration. In conclusion the method presented provides for full automation of MLC quality assurance, based on individual linac performance characteristics. The use of the automatic method has been shown to provide early warning for MLC errors that resulted in clinical downtime.
Longitudinal and transversal bioimpedance measurements in addition to diagnosis of heart failure
Ribas, N.; Nescolarde, L.; Domingo, M.; Gastelurrutia, P.; Bayés-Genis, A.; Rosell-Ferrer, J.
2010-04-01
Heart Failure (HF) is a clinical syndrome characterised by signs of systemic and pulmonary fluid retention, shortness of breath and/or fatigue. There is a lack of reliable indicators of disease state. Benefits and applicability of non-invasive bioimpedance measurement in the hydration state of soft tissues have been validated, fundamentally, in dialysis patients. Four impedance configurations (2 longitudinal and 2 transversal) were analyzed in 48 HF patients (M=28, F=20) classified according to a clinical disease severity score (CDSS) derived from the Framingham criteria: CDSS2 (G2: M = 5, F = 6). The aim of this study is to analyze longitudinal and transversal bioimpedance measurement at 50 kHz, in addition to clinical diagnosis parameters of heart failure, including: clinical disease severity score (CDSS) and a biomarker concentrations (NT-proBNP). The Kolmogorov-Smirnov test was used for the normality test of all variables. The CDSS, NTproBNP and impedance parameters between groups (G1 and G2) were compared by mean of Mann Withney U-test. The statistical significance was considered with P measured was analyzed using RXc graph.
Nescolarde, L.; Doñate, T.; Casañas, R.; Rosell-Ferrer, J.
2010-04-01
More relevant information of the fluid changes in peritoneal dialysis (PD) might be obtained with segmental bioimpedance measurements rather than whole-body measurement, who hidden information of body composition. Whole-body and segmental bioimpedance measurements were obtained using 5 configurations (whole-body or right-side (RS), longitudinal-leg (L-LEG), longitudinal-abdomen (L-AB), transversal-abdomen (T-AB), and transversal-leg (T-LEG)) in 20 patients: 15 males (56.5 ± 9.4 yr, 24.2 ± 4.2 kg/m2) and 5 females (58.4 ± 7.1 yr, 28.2 ± 5.9 kg/m2) in peritoneal dialysis (PD). The aim of this study is to analyze the relationship between whole-body, longitudinal-segmental (L-LEG and L-AB) and transversal-segmental (TAB and TLEG) bioimpedance measurement at 50 kHz, with clinical parameters of cardiovascular risk, dyslipidemia, nutrition and hydration. The Kolmogorov-Smirnov test was used for the normality test of all variables. Longitudinal bioimpedance parameters were normalized by the height of the patients. The Spearman correlation was used to analyze the correlation between bioimpedance and clinical parameters. The statistical significance was considered with P bioimpedance measurements have higher correlation with clinical parameters than longitudinal measurements.
Biomechanical comparison of the four-strand cruciate and Strickland techniques in animal tendons
Raquel Bernardelli Iamaguchi
2013-12-01
Full Text Available OBJECTIVE: The objective of this study was to compare two four-strand techniques: the traditional Strickland and cruciate techniques. METHODS: Thirty-eight Achilles tendons were removed from 19 rabbits and were assigned to two groups based on suture technique (Group 1, Strickland suture; Group 2, cruciate repair. The sutured tendons were subjected to constant progressive distraction using a universal testing machine (Kratos®. Based on data from the instrument, which were synchronized with the visualized gap at the suture site and at the time of suture rupture, the following data were obtained: maximum load to rupture, maximum deformation or gap, time elapsed until failure, and stiffness. RESULTS: In the statistical analysis, the data were parametric and unpaired, and by Kolmogorov-Smirnov test, the sample distribution was normal. By Student's t-test, there was no significant difference in any of the data: the cruciate repair sutures had slightly better mean stiffness, and the Strickland sutures had longer time-elapsed suture ruptures and higher average maximum deformation. CONCLUSIONS: The cruciate and Strickland techniques for flexor tendon sutures have similar mechanical characteristics in vitro.
Detection of Fraud with Agent–Based Models: the 2006 Mexican Election
Gonzalo Castañeda
2010-07-01
Full Text Available In this paper an innovative tool is applied for the detection of electoral fraud by analyzing statistical distributions of the official results. With this aim a computational model is developed to describe the dynamics of an electoral campaign that conditions the individuals' political preferences. The agent–based model is built assuming that in a clean process the electoral outcome depends, essentially, on preferences subjected to the influence of social interaction and global information. In contrast, in order to simulate an electoral fraud the model is modified such that the voting behavior of the citizens is manipulated on election–day. The model is calibrated with data form the 2006 Mexican electoral campaign for the presidency, and the presence or absence of fraud is validated using the Kolmogorov–Smirnov test, a non–parametric procedure. With information aggregated at the electoral district level, the simulation model rejects the existence of a large scale fraud where at least 5–6% of the total vote tally is manipulated in favor of a particular candidate.
Manaia, Jorge H M; Cardoso, Gilberto P; Babinski, Marcio A
2015-01-01
The aim of this study was to assess the volumetric density (Vv) of the fibronectin in the periurethral region of patients with benign prostatic hyperplasia (BPH) and compare with a control group. Prostatic periurethral tissue samples were obtained from ten patients (age range 65 to 79 years, mean 66) with clinical symptoms of bladder outlet obstruction who had undergone open prostatectomy. The control group samples (periurethral tissue samples from the transitional zone) were collected from prostates obtained during autopsy of accidental death adults of less than 25 years. The volumetric density (Vv) of the fibronectin was determined with stereological methods from 25 random fields per sample using the point-count method with an M-42 grid test system. The quantitative data were analyzed using the Kolmogorov-Smirnov and Mann-Whitney U tests. The Vv in the control and BPH groups was 21.9% ± 1.5% and 29.1% ± 1.2% in the fibronectin, respectively. BPH tissues presented a significant increase of fibronectin in prostatic periurethral region in the transitional zone that may cause lengthening of the prostatic urethra.
Comparison of Plasma Copper Concentrations in Patients with Brucellosis and Control Group
A.R. Mobaien
2008-07-01
Full Text Available Introduction & Objective : There are some reports about influence of the rare nutrients such as copper and zinc on immune system. Serum concentrations of copper alter in patients with brucellosis. Brucellosis is a common and endemic disease and a health problem in Iran. We compared serum concentrations of copper in patients with brucellosis and healthy individuals.Materials & Methods: In a cross sectional study, serum concentrations of copper was measured in patients with brucellosis and control group. Eighty six subjects were enrolled in the study, including 43 patients with brucellosis (34 men and 9 women and 43 healthy individuals. Serum concentrations of copper was measured by automatic absorptive spectrophotometer in patients with brucellosis and compared with control group. We employed a non parametrical test, kolmogrov – smirnov, to determine if data distribution was normal or not. Results: Mean age of patients with brucellosis was 40.1415.10 years with the range of 14-60 years. The most frequent symptoms were arthralgia (86%. Serum concentrations of copper in patients with brucellosis were significantly higher than healthy subjects (160.8454.61, 101.7427.37 g/dl respectively, p<0.001.Conclusion: Serum concentrations of copper in patients with brucellosis showed significant alterations in comparison with healthy subjects. So, we recommend using serum copper concentrations in patients with brucellosis as a marker in brucellosis diagnosis. Also we recommend another study for detection of serum copper concentrations before and during treatment.
Shape of the oxygen abundance profiles in CALIFA face-on spiral galaxies
Sánchez-Menguiano, L; Pérez, I; García-Benito, R; Husemann, B; Mast, D; Mendoza, A; Ruiz-Lara, T; Ascasibar, Y; Bland-Hawthorn, J; Cavichia, O; Díaz, A I; Florido, E; Galbany, L; Delgado, R M Gónzalez; Kehrig, C; Marino, R A; Márquez, I; Masegosa, J; Méndez-Abreu, J; Mollá, M; del Olmo, A; Pérez, E; Sánchez-Blázquez, P; Stanishev, V; Walcher, C J; López-Sánchez, Á R
2016-01-01
We measured the gas abundance profiles in a sample of 122 face-on spiral galaxies observed by the CALIFA survey and included all spaxels whose line emission was consistent with star formation. This type of analysis allowed us to improve the statistics with respect to previous studies, and to properly estimate the oxygen distribution across the entire disc to a distance of up to 3-4 disc effective radii (r$_e$). We confirm the results obtained from classical HII region analysis. In addition to the general negative gradient, an outer flattening can be observed in the oxygen abundance radial profile. An inner drop is also found in some cases. There is a common abundance gradient between 0.5 and 2.0 r$_e$ of $\\alpha_{O/H} = -\\,0.075\\,\\rm{dex}/r_e$ with a scatter of $\\sigma = 0.016\\,\\rm{dex}/r_e$ when normalising the distances to the disc effective radius. By performing a set of Kolmogorov-Smirnov tests, we determined that this slope is independent of other galaxy properties, such as morphology, absolute magnitude...
A PIV-Guided Large-Eddy Simulation of In-Cylinder Flows
Nicollet Franck
2017-09-01
Full Text Available A combination of Large-Eddy Simulation (LES and Particle Image Velocimetry (PIV was utilized to investigate the three-dimensional in-cylinder flow within an optically accessible Direct Injection Spark Ignition (DISI engine at motored engine operation. The PIV measurements were used to guide the meshing procedure by identifying the regions were refinements and improvements were needed. From the iteratively optimized meshes LES results are shown from two selected meshes, an intermediate coarse mesh and the final optimized mesh, and compared to PIV measurements. The evolution of the intake flow and the tumble in the central tumble plane during compression are presented and discussed. Exploitation of the LES results allowed showing the influence of out-of-plane velocities along the cylinder liner impacting the formation of the tumble flow. The optimized mesh was then used to investigate the influence of the spark plug on the in-cylinder flow. For the studied engine the spark plug had a significant impact on the evolution of the tumble flow during compression. Finally 35 engine cycles were simulated using the optimized mesh with the spark plug in place. Velocity distributions in a region below the spark plug are shown and compared with PIV results. The two-sample Kolmogorov-Smirnov test revealed a strong similarity between the velocity distributions obtained by PIV and LES, thus validating the potential of LES for investigating cycle-to-cycle variability.
Habibeh Ayagh
2013-05-01
Full Text Available An empirical study to investigate the effects of thinking styles on emotional intelligence among employees of agriculture industry in east Azerbaijan province. The proposed study uses a standard thinking style questionnaire originally developed by Sternberg and Wagner (1992 [Sternberg, R. J., & Wagner, R. K. (1992. Thinking styles inventory. Unpublished test, Yale University]. There are 716 employees working for this agriculture-based unit and the study uses random sampling technique and chooses 255 employees for this study. Cronbach alpha has been used to verify the overall questionnaire and different tests such as Kolmogorov-Smirnov and Pearson correlation test are used to examine different hypotheses of this survey. The results indicate there is positive and meaningful relationship between thinking style and emotional intelligence. We can also confirm that four thinking style’s components including functions, levels, scope and learning have meaningful impact on emotional intelligence when the level of significance is five or even one percent. However, forms did not have any meaningful impact on emotional intelligence.
COSTA, Yuri Martins; PORPORATTI, André Luís; HILGENBERG-SYDNEY, Priscila Brenner; BONJARDIM, Leonardo Rigoldi; CONTI, Paulo César Rodrigues
2015-01-01
ABSTRACT Low pressure Pain Threshold (PPT) is considered a risk factor for Temporomandibular Disorders (TMD) and is influenced by psychological variables. Objectives To correlate deep pain sensitivity of masticatory muscles with prosthetic factors and Oral-Health-Related Quality of Life (OHRQoL) in completely edentulous subjects. Material and Methods A total of 29 complete denture wearers were recruited. The variables were: a) Pressure Pain Threshold (PPT) of the masseter and temporalis; b) retention, stability, and tooth wear of dentures; c) Vertical Dimension of Occlusion (VDO); d) Oral Health Impact Profile (OHIP) adapted to orofacial pain. The Kolmogorov-Smirnov test, the Pearson Product-Moment correlation coefficient, the Spearman Rank correlation coefficient, the Point-Biserial correlation coefficient, and the Bonferroni correction (α=1%) were applied to the data. Results The mean age (standard deviation) of the participants was of 70.1 years (9.5) and 82% of them were females. There were no significant correlations with prosthetic factors, but significant negative correlations were found between the OHIP and the PPT of the anterior temporalis (r=-0.50, 95% CI-0.73 to 0.17, p=0.005). Discussion The deep pain sensitivity of masticatory muscles in complete dentures wearers is associated with OHRQoL, but not with prosthetic factors. PMID:26814457
A Comparison of Generalized Hyperbolic Distribution Models for Equity Returns
Virginie Konlack Socgnia
2014-01-01
Full Text Available We discuss the calibration of the univariate and multivariate generalized hyperbolic distributions, as well as their hyperbolic, variance gamma, normal inverse Gaussian, and skew Student’s t-distribution subclasses for the daily log-returns of seven of the most liquid mining stocks listed on the Johannesburg Stocks Exchange. To estimate the model parameters from historic distributions, we use an expectation maximization based algorithm for the univariate case and a multicycle expectation conditional maximization estimation algorithm for the multivariate case. We assess the goodness of fit statistics using the log-likelihood, the Akaike information criterion, and the Kolmogorov-Smirnov distance. Finally, we inspect the temporal stability of parameters and note implications as criteria for distinguishing between models. To better understand the dependence structure of the stocks, we fit the MGHD and subclasses to both the stock returns and the two leading principal components derived from the price data. While the MGHD could fit both data subsets, we observed that the multivariate normality of the stock return residuals, computed by removing shared components, suggests that the departure from normality can be explained by the structure in the common factors.
Piparo, Danilo
2012-01-01
The estimation of the compatibility of large amounts of histogram pairs is a recurrent problem in high energy physics. The issue is common to several different areas, from software quality monitoring to data certification, preservation and analysis. Given two sets of histograms, it is very important to be able to scrutinize the outcome of several goodness of fit tests, obtain a clear answer about the overall compatibility, easily spot the single anomalies and directly access the concerned histogram pairs. This procedure must be automated in order to reduce the human workload, therefore improving the process of identification of differences which is usually carried out by a trained human mind. Some solutions to this problem have been proposed, but they are experiment specific. RelMon depends only on ROOT and offers several goodness of fit tests (e.g. chi-squared or Kolmogorov-Smirnov). It produces highly readable web reports, in which aggregations of the comparisons rankings are available as well as all the pl...
The Probability Distribution Model of Wind Speed over East Malaysia
Nurulkamal Masseran
2013-07-01
Full Text Available Many studies have found that wind speed is the most significant parameter of wind power. Thus, an accurate determination of the probability distribution of wind speed is an important parameter to measure before estimating the wind energy potential over a particular region. Utilizing an accurate distribution will minimize the uncertainty in wind resource estimates and improve the site assessment phase of planning. In general, different regions have different wind regimes. Hence, it is reasonable that different wind distributions will be found for different regions. Because it is reasonable to consider that wind regimes vary according to the region of a particular country, nine different statistical distributions have been fitted to the mean hourly wind speed data from 20 wind stations in East Malaysia, for the period from 2000 to 2009. The values from Kolmogorov-Smirnov statistic, Akaike’s Information Criteria, Bayesian Information Criteria and R2 correlation coefficient were compared with the distributions to determine the best fit for describing the observed data. A good fit for most of the stations in East Malaysia was found using the Gamma and Burr distributions, though there was no clear pattern observed for all regions in East Malaysia. However, the Gamma distribution was a clear fit to the data from all stations in southern Sabah.
[Oxidative stress; a comparative study between normal and morbid obesity group population].
De Tursi Ríspoli, Leonardo; Vázquez Tarragón, Antonio; Vázquez Prado, Antonio; Sáez Tormo, Guillermo; Mahmoud Ismail, Ali; Gumbau Puchol, Verónica
2013-01-01
Objetivo: Determinar el grado de Estrés Oxidativo en pacientes obesos mórbidos comparando los resultados con los de una población normal. Material y método: Hemos estudiado los metabolitos más representativos del EO, tanto en sangre (MDA, 8-oxo-dG, GSSG y la relación GSSG/GSH) como en orina (8-oxo-dG), así como el antioxidante GSH. Realizamos un análisis descriptivo de la muestra. Se realizó la prueba de Kolmogorv-Smirnov para evaluar si la distribución de los distintos metabolitos seguía un modelo de normalidad. En los casos de distribución normal, se empleó la T de Student para comparar medias, utilizando la U de Mann-Whitney para los datos no paramétricos, utilizando en los contrastes de hipótesis el nivel de significación p antioxidantes (GSH) fue menor en el grupo de obesos mórbidos. Conclusión: Los valores de los metabolitos de EO obtenidos en el grupo de obesos mórbidos confirma la presencia de EO en la obesidad, de un modo que se puede considerar patológico dadas las diferencias obtenidas en el grupo de población normal.
Afshar, Hossein; Nakhjavani, Yahya Baradaran; Ahmadi, Rahil
2014-01-01
Background: Attempts to enhance bond strength of the sealant have been among the most important sides of dental research. Aim: The purpose of the present study was to evaluate the effect of using different rinsing angles on the micro-tensile bond strength of the sealant to the etched enamel. Settings and Design: Experimental study. Materials and Methods: Sixty first-premolars were randomly assigned to six groups based on the rinsing angle applied (15°, 30°, 45°, 60°, 75°, and 90°). Following etching and rinsing, a 4-mm height build up of sealant material was created. Bonded specimens were sectioned into sticks (1 × 1 mm), which were subjected to micro-tensile bond strength, testing at a cross-head speed of 0.5 mm/min. Statistical Analysis Used: The data were analyzed by Kolmogorov-Smirnov and post-hoc Tukey test. Results: The tensile bond strength in specimens rinsed at 90° were statistically higher compared to those rinsed at 15° and 30° (P bond strength and retention of the sealant. PMID:24808698
Altan AYAN
2014-01-01
Full Text Available In this study, firstly, the concept of human resource management is discussed. Secondly, it is investigated that whether or not, the concepts of human resource functions of a total of 117 employees working at a business enterprise in garment industry, according to demographic characteristics. In other words, the main objective of this study is to determine the differences between demographic characteristics of the concepts of human resource functions. The data were gathered by human resource functional concept scale consisting of 30 questions. In this context, frequency analysis, factor analysis, reliability analysis, Kolmogorov-Smirnov normal distribution tests were applied by using SPSS 14 program. In this context, hypotheses were formed and tested by applying Mann-Whitney U and Kruskal Wallis tests. In conclusion, the concept of salary management and regularity of employees shows differences according to work year and number of child; the concept of career management and fair behavior of employees shows differences according to income level; the concept of training and motivation of employees shows differences according to income level; the concept of to be promoted in organization of employees shows differences according to number of siblings.
Mahmood Najafian
2016-10-01
Full Text Available Background Flavonoids have been reported as mammalian alpha-amylase inhibitors, a property which could be useful in the management of postprandial hyperglycemia in diabetes and its related disorders. Objectives In the present study the inhibitory effect of aspalathin as a flavonoid on alpha amylase activity and levels of sugar and lipids in rats, has been investigated. Methods In this experimental study, type inhibition of aspalatin on amylase and in the part of in vivo, the effect of aspalathin orally doses 5, 10, 20 and 40 mg/kg body weight on sugar and lipids levels was tested in a streptozotocin-induced model of diabetes and normal rats. The data were analyzed by one-sample Kolmogrov-Smirnov, Levene and ANOVA tests through SPSS version 22. Results The results showed that aspalathin is a competitive inhibitor for alpha amylase with Ki = 37.0 μM. In both diabetic and normal groups in all doses nearly dose dependent manner reduced blood glucose levels and beneficial effect on dyslipidemia were observed in diabetic rats, as well as reduction of disturbing consequences of diabetes such as high urine volume and water intake. Aspalathin was observed to have a weight loss-inductive effect, alongside with a reduction in food intake. Conclusions It seems that, this compound could be proposed as an antihyperglycemic and antihyperlipidemic agent in diabetes and potential therapeutic in obesity.
The New Factors Determining on Attract Foreign Direct Investment in the Sports Industry of Iran
Mahdiyeh Rooham
2014-09-01
Full Text Available The aim of this study was to investigate factors determining, including: economic, support, encouragement, political and diplomatic on attract foreign direct investment in the sport industry of Iran. Current study was an applied research in terms aims, and descriptive - analytical in terms methods of data collection, which was conducted as fieldwork. The statistical population was all board members of the 12 federations and 3 investment companies in the sports industry of Iran (N≈127. 100 subjects were determined based on Cohen's tables and questionnaires were distributed among them. Research’ measuring tool was questionnaire including 30 questions by researcher made. The questionnaire provided during a preliminary study by using Delphi method, which the reliability of the questionnaire was determined using the method Cronbach's alpha statistic 92%. After collecting the questionnaires, it was found that the data have not normally distributed by using Kolmogorov–Smirnov test. Thus Kruskal-Wallis and Friedman tests and factor analysis with SPSS software were used for determine the contribution of each factor on attract foreign direct investment. The results showed that the privatization factor in the country's sports industry among the economic factors, the factor of government support of investor in sports among the support and encouragement factors, and trying to remove economic sanctions against Iran among the political factors had the greatest impact on attracting foreign direct investment on sports industry of Iran.
[Dentoalveolar trauma. Analysis of 4763 patients with 6237 injuries in 10 years].
Tuli, T; Hächl, O; Rasse, M; Kloss, F; Gassner, R
2005-09-01
The purpose of this study was to evaluate the overall place of dental trauma in facial injuries. This was a retrospective investigation based on the analysis of a large amount of dentoalveolar injuries over a 10-year period. Between 1991 and 2000, 4763 of 9543 patients suffering from oral and maxillofacial injuries, sustained dentoalveolar trauma. Records of 6237 different dental injury patterns were reviewed according to the five main injury mechanisms: age, sex, type of injury, cause of accident, and frequency of dentoalveolar trauma. They were statistically analyzed using frequency distribution, chi-square test, t-test, Mann-Whitney U test, Kolmogorov-Smirnov test, and logistic regression analysis. Household and play (2117), sports (1533), traffic accidents (438), acts of violence (426), and work-related accidents (201) were noted. A total of 4763 patients had 2988 subluxations, 2356 showed crown fractures, 444 had avulsions, 176 root fractures, 154 intrusions, and 119 patients suffered from concussions. This number of patients accounts for the prevalence of 49.9% for dentoalveolar trauma among all facial injuries. Only the analysis of a large number of injuries reveals the risk of suffering from dentoalveolar trauma. Due to this fact, preventive methods can be recommended and demanded more effectively.
Nechval, Nicholas A.
1988-10-01
The objective of this paper is to focus attention on a new practicable statistical approach to goodness-of-fit testing which is based on the notion of sufficiency and. provides an unified efficient approach to the problem of test construction in the presence of nuisance parameters. The general strategy of the above approach is to transform a set of random variables into a smaller set of independently and identically distributed uniform random variables on the interval (0,1)-i.i.d. U(0,1) under the null hypothesis HO. Under the alternative hypothesis this set of rv's will, in general, not be i.i.d. U(0,1). In other words, we replace the composite hypotheses by equivalent simple ones. Any statistic which measures a distance from uniformity in the transformed sample can be used as a test statistic. For instance, for this situation standard procedures of goodness-of-fit testing such as those based on Kolmogorov-Smirnov and Cramervon Mises statistics can be used. The obtained results are applicable to feature selection and pattern recognition. According to proposed approach, the best subset of feature measurements is the subset which maximizes the likelihood function of statistic that measures a distance from uniformity in the transformed sample. For the sake of illustrations the examples are given.
The Impact of Internal Marketing on Customer Satisfaction and Loyalty
Mohammad Reza Moghadam
2016-12-01
Full Text Available This research is trying to determine the impact of internal marketing on customer satisfaction and loyalty in Global Distribution of Bunny Chow of Qazvin Branch. The research type was applied research in terms of goal and descriptive-survey research in terms of nature. Sampling methods were census type for staffs and available non- probability for customers. It was used questionnaire to collect data. It was used Cronbach's Alpha to assess reliability of questionnaire. To test questions of the research and to obtain the results, normality of data has been tested by Kolmogorov-Smirnov test. It was used descriptive statistics to analyze hypothesis testing, one-sample t-test to determine the situation of variables, linear regression and hierarchical regression to test hypothesis, and analysis of variance to prioritize variables. Findings showed that all factors of internal marketing have positive and significant effect on customer loyalty and customer satisfaction intervenes with the impact of service quality on customer loyalty. According to the results, priority of internal marketing factors was employees' empowerment, continuous education, employee involvement, reward system, job security, and share information, respectively.
Haifeng eChen
2015-11-01
Full Text Available RNA polymerase catalyzes transcription with a high fidelity. If DNA/RNA mismatch or DNA damage occurs downstream, a backtracked RNA polymerase can proofread this situation. However, the backtracked mechanism is still poorly understood. Here we have performed multiple explicit-solvent molecular dynamics (MD simulations on bound and apo DNA/RNA hybrid to study backtracked recognition. MD simulations at room temperature suggest that specific electrostatic interactions play key roles in the backtracked recognition between the polymerase and DNA/RNA hybrid. Kinetics analysis at high temperature shows that bound and apo DNA/RNA hybrid unfold via a two-state process. Both kinetics and free energy landscape analyses indicate that bound DNA/RNA hybrid folds in the order of DNA/RNA contracting, the tertiary folding and polymerase binding. The predicted Φ-values suggest that C7, G9, dC12, dC15 and dT16 are key bases for the backtracked recognition of DNA/RNA hybrid. The average RMSD values between the bound structures and the corresponding apo ones and Kolmogorov-Smirnov (KS P test analyses indicate that the recognition between DNA/RNA hybrid and polymerase might follow an induced fit mechanism for DNA/RNA hybrid and conformation selection for polymerase. Furthermore, this method could be used to relative studies of specific recognition between nucleic acid and protein.
Planetary nebulae in the inner Milky Way II: the Bulge-Disk transition
O. Cavichia
2011-01-01
Full Text Available En este trabajo se usa una muestra de nebulosas planetarias localizadas en el disco interno y en el bulbo de la Galaxia con objeto de encontrar la distancia galactocéntrica que mejor separa estas dos poblaciones desde el punto de vista de las abundancias. Se utilizan escalas de distancias estadísticas para estudiar la distribución de abundancias en la interfase disco-bulbo. Mediante una prueba de Kolmogorov-Smirnov se encuentra la distancia a la cual las propiedades químicas de estas regiones mejor se separan. El resultado del análisis estadístico indica que, en promedio, la población interior tiene menores abundancias que la exterior. Además, la población interior no sigue el gradiente radial del disco hacia el centro galáctico. Basados en nuestros resultados, sugerimos que la interfase disco-bulbo está situada a 1.5 kpc del centro, y marca la transición entre la población del bulbo y la del disco interno, definida como la población de masas intermedias.
A study on relationship of brand characteristics and customer satisfaction with brand loyalty
Ebrahim Zarepour Nasirabadi
2013-07-01
Full Text Available Brands are considered as valuable assets of a company both economically and strategically. Thus, having customers who are loyal to a brand is one of the main goals of businesses companies. Identifying and anticipating the customers’ needs are vital to the enterprises gaining competitive advantage and market segmentation. Maintaining and enforcing customers’ loyalty is a strategic challenge for companies seeking to keep and promote their competitive status in the market. High brand loyalty of the customers generates competitive advantage for the company and it increases the income and decreases the costs of marketing. In addition to increasing the market share, loyalty allows to ask for higher prices compared with its competitors. This study seeks to investigate the factors influencing customer loyalty to sport brands. The statistical population of this research was Tehran city. Using simple cluster sampling, 502 customers of four known brand sports, i.e. Nike, Puma, Adidas, Reebok, and Fila were chosen. Furthermore, a questionnaire, which assessed seven variables including reputations, brand name, brand image, brand loyalty, customer satisfaction, promotion and the price was used and the hypotheses were analyzed using statistical tests such as Kolmogorov-Smirnov test (K-S test, Spearman correlation, simultaneous linear regression and binomial test. The findings suggested that the brand name has a strong correlation with brand loyalty. Moreover, variables such as reputation, brand image, customer satisfaction, price and promotions also have positive and significant effect on the brand loyalty.
Guidelines to classify subject groups in sport-science research.
De Pauw, Kevin; Roelands, Bart; Cheung, Stephen S; de Geus, Bas; Rietjens, Gerard; Meeusen, Romain
2013-03-01
The aim of this systematic literature review was to outline the various preexperimental maximal cycle-test protocols, terminology, and performance indicators currently used to classify subject groups in sport-science research and to construct a classification system for cycling-related research. A database of 130 subject-group descriptions contains information on preexperimental maximal cycle-protocol designs, terminology of the subject groups, biometrical and physiological data, cycling experience, and parameters. Kolmogorov-Smirnov test, 1-way ANOVA, post hoc Bonferroni (P data on a subject group, researchers apply various terms to define the group. To solve this complexity, the authors introduced the neutral term performance levels 1 to 5, representing untrained, recreationally trained, trained, well-trained, and professional subject groups, respectively. The most cited parameter in literature to define subject groups is relative VO(2max), and therefore no overlap between different performance levels may occur for this principal parameter. Another significant cycling parameter is the absolute PPO. The description of additional physiological information and current and past cycling data is advised. This review clearly shows the need to standardize the procedure for classifying subject groups. Recommendations are formulated concerning preexperimental testing, terminology, and performance indicators.
Husak, Gregory J.; Michaelsen, Joel C.; Funk, Christopher C.
2007-01-01
Evaluating a range of scenarios that accurately reflect precipitation variability is critical for water resource applications. Inputs to these applications can be provided using location- and interval-specific probability distributions. These distributions make it possible to estimate the likelihood of rainfall being within a specified range. In this paper, we demonstrate the feasibility of fitting cell-by-cell probability distributions to grids of monthly interpolated, continent-wide data. Future work will then detail applications of these grids to improved satellite-remote sensing of drought and interpretations of probabilistic climate outlook forum forecasts. The gamma distribution is well suited to these applications because it is fairly familiar to African scientists, and capable of representing a variety of distribution shapes. This study tests the goodness-of-fit using the Kolmogorov–Smirnov (KS) test, and compares these results against another distribution commonly used in rainfall events, the Weibull. The gamma distribution is suitable for roughly 98% of the locations over all months. The techniques and results presented in this study provide a foundation for use of the gamma distribution to generate drivers for various rain-related models. These models are used as decision support tools for the management of water and agricultural resources as well as food reserves by providing decision makers with ways to evaluate the likelihood of various rainfall accumulations and assess different scenarios in Africa.
Ebrahim Zarrinkalam
2016-03-01
Full Text Available Objective: Cerebral palsy is the most common chronic motor disability in children and can have negative effect on motor functions. The purpose of this study was to investigate the effect of eight weeks resistance training on gross motor ability, balance and walking speed in a group of such children. Methods: 21 cerebral palsy boys with spastic diplegia, aged between 12 and 16 years (mean, 13.66 years, participated in this study. A pre-test, involving walking, sitting, standing and walking up stairs. They were randomly divided into an experimental and control groups. Then, the experimental group participated in 8 weeks of resistance training. The data was attained from a 10 meter walk test, Berg Balance Test, gross motor ability Section E, D and GMFCS tests. Kolmogorov-Smirnov test, sample t-test were used for analyzing the data. Results: The results showed a significant improvement in the performance of experimental group in gross motor abilities section E and D, balance and walking speed after 8 weeks of resistance training (P <0.05(. However, significant differences were not observed in the control group before and after the study (P <0.05. Conclusion: The results showed that resistance training improves gross motor ability, balance and gait in children with cerebral palsy hence, it is recommended that resistance exercise be used as a therapeutic modality for children with cerebral palsy.
Quality of life in type 2 diabetic patients and related effective factors
M H Kazemi-Galougahi
2012-01-01
Full Text Available Background: Diabetes type 2, as one of the most important chronic diseases in the world, reduces quality of life in patients. Materials and Methods: Our research - as a descriptive analytical cross-sectional study - was performed on 120 type 2 diabetics in Tehran 503 hospital in 2008. Diverse domain scores of patients′ quality of life were evaluated by SF-36 standard questionnaire. Gained data analyzed by SPSS 16.0 software through statistical tests including Pearson′s correlation coefficient, Chi-square test, Independent T-test, Kolmogrov-Smirnov test, Mann-Whitney test, Kruskal Wallis test, ANOVA, and Fisher exact test. Results: Age had significant reverse relationship with physical functioning, vitality, mental health, and mental component score. Education level was just directly correlated to bodily pain. Marital status was correlated with social functioning and general health domains. Family income level was directly related to mental health and mental component score domains. No relation was found between years of disease duration, smoking status, workout status, diet follow-up, lack/presence of hypertension, and diverse domains of these patients′ quality of life. Hyperlipidemia had meaningful reverse relationship to physical functioning, bodily pain, social functioning, and physical component score domains. Heart diseases had meaningful reverse relationship to physical functioning and mental health domains. Patients′ physical component score had direct relationship to mental component score. Conclusion: Observed scores were meaningfully low in comparison with both healthy people and similar surveys.
Limit theorems in the imitative monomer-dimer mean-field model via Stein's method
Chen, Wei-Kuo
2016-08-01
We consider the imitative monomer-dimer model on the complete graph introduced in the work of Alberici et al. [J. Math. Phys. 55, 063301-1-063301-27 (2014)]. It was shown that this model is described by the monomer density and has a phase transition along certain coexistence curve, where the monomer and dimer phases coexist. More recently, it was understood [D. Alberici et al., Commun. Math. Phys. (published online, 2016)] that the monomer density exhibits the central limit theorem away from the coexistence curve and enjoys a non-normal limit theorem at criticality with normalized exponent 3/4. By reverting the model to a weighted Curie-Weiss model with hard core interaction, we establish the complete description of the fluctuation properties of the monomer density on the full parameter space via Stein's method of exchangeable pairs. Our approach recovers what were established in the work of Alberici et al. [Commun. Math. Phys. (published online, 2016)] and furthermore allows to obtain the conditional central limit theorems along the coexistence curve. In all these results, the Berry-Esseen inequalities for the Kolmogorov-Smirnov distance are given.
An Investigation of Attitudes of 6-8th Graders Towards Universal Values
Ender DURUALP
2012-10-01
Full Text Available This study aims to describe attitudes of 6-8th graders towards universal values and examine the impact of their age, gender, grade level, academic performance, parental level of education, and family income on their attitudes towards universal values. The population consisted of 6-8th graders being taught in primary schools in Çankırı, Turkey. The sample consisted of 361 students (203 girls, 158 boys randomly selected from Çankırı İsmet İnönü Elementary School located in Çankırı which attracts the highest number of students from each level of socioeconomic status. The sociodemographic data of children and their parents were collected through a “General Information Form”, and the data related to attitudes towards universal values were obtained by the “Attitude Towards Universal Values Scale” developed by Demir and Koç (2009. Data were analyzed through Kolmogorov-Smirnov, Mann-Whitney U, Kruskal-Wallis H tests, and Cronbach Alpha (α reliability coefficient. Results showed that girls (p>0.05, 8th graders, academically-talented children, those whose parents are university graduates, and those with a family income of minimum wage or more have more positive attitudes towards universal values (p<0.05.
Irinyi, Tamás; Németh, Anikó; Lampek, Kinga
2017-02-01
Violence against health care providers is getting more awareness nowadays. This topic is in the focus of international scientific attention also, although in Hungary exact data is lacking. The present study aimed to assess the correlations between violent acts against health care workers and their effects with different sociodemographic and workplace-related factors. A quantitative cross-sectional online survey was conducted enrolling 1201 health care providers. Data were analysed trough chi-square, Kolmogorov-Smirnov, Mann-Whitney and Kruskal-Wallis tests, where appropriate. Verbal and physical aggression was experienced more frequently by nurses who were males, above the age of fifty, working in in-patient care or in 12 hours shifts or constant night shifts. The same groups of health care providers suffered more from the negative emotional consequences of violent acts. Aggression is a serious problem in the Hungarian health care system, therefore employees have to be prepared for these acts. Orv. Hetil., 2017, 158(6), 229-237.
The Creation of Small and Medium-Sized Sport Enterprises and the Environmental Factors Affecting It
Seyed Morteza Azimzadeh
2013-05-01
Full Text Available Small and medium-sized enterprises are very basic solutions for the development of a country; therefore, it is important to understand the factors involved in their creation. Hence, this study sought to examine the relationship between environmental factors and creation of Small and medium-sized sport enterprises. The research population was small and medium-sized sport enterprises (1500 companies; their owners / managers were selected as the research sample (n = 258 by simple random sampling. Data were gathered using environmental factors (α=0.77 and enterprises creation qualification (α=0.81 questionnaires. Descriptive and inferential statistics (Pearson correlation coefficient, Kolmogrof - Smirnov test, and multivariate regression analysis with SPSS16 software was used for data analysis. The results showed that in addition to positive and significant relationship with business, environmental factors could predict 6% of the creation variance; Also, except for the political dimension, all environmental aspects established a significant relationship with enterprise creation( p<0.01. Regression analysis showed that of environmental dimensions, economics and technology dimensions could explain 7 percent of Sports enterprise creation variance. According to path analysis method, this prediction ability is presented in a model. The findings suggested a diminished role of environment and its dimensions in explaining the process of SMEs creation.
R.A Donna Pratiwi
2015-08-01
Full Text Available Occlusal splint is commonly used for treatment of the temporomandibular joint disorder (TMD. It can be made of hard and soft material. Hard occlusal splint (HOS which was known earlier had been recognized more effective than soft occlusal splint (SOS which recently gained some popularity. This clinical study based on case series was to determined which type of occlusal splint was more effective for TMD. This study involved 20 subjects and they were divided into HOS and SOS group with 10 subjects in each group. HOS was processed with heat curing acrylic and SOS with vacuum former. Before and after 4 weeks of treatment, 5 TMD symptoms (impaired range of movement, impaired TMJ function, muscle pain, TMJ pain and pain on movement of mandible were measured using Helkimo diagnostic index. The results were analyzed with Kolmogorov-Smirnov Z's test. The findings showed statistically significant improvement in impaired range of movement and muscle pain in favor of HOS group (p<0.05. Although they were not statistically significant, HOS group showed better improvement than SOS group in TMJ pain and pain on movement of the mandible. In TMJ's function, no changes were found in both groups. IN general, HOS was more effective than SOS for treating TMD in relatively short period of time. Despite of the phenomena, the popularity of SOS was not followed with its effectiveness.
Effects of Antioxidants Supplemment, Astaxanthin, Vitamin E, C, in Rat Fed a High-Fat Diet
AA Vahidinia
2010-10-01
Full Text Available Introduction & Objective: obesity is independently associated with increased oxidative stress in men and women. Natural antioxidants showed substantial antioxidative and anti-inflammatory activities in vivo. In this study, we examined the preventive effect of antioxidants supplement and/or restricted diet on the development of obesity induced by feeding a high-fat (HF diet. Materials & Methods: The present study was conducted at Hamadan University of Medical Sciences in 2009. Forty-eight male Wistar rats were randomly assigned to HF purified diet (61% kcal from fat ad libitum, HF restricted (30%, HF supplemented with astaxanthin, vitamin E and C (HFS, HFS restricted (30% for 12 weeks. Daily food intake and weekly body weight gain were measured. The collected data were analyzed by the SPSS software using Colmogroph- Smirnov, One-Way ANOVA, and Two-Way ANOVA. Results: Dietary antioxidants suppressed body weight gain in the HF-diet ad libitum (-9.8%, and in HF restricted diet (-18.14%. Energy intake was not significant in HF with HFS (58.8 and 58.6 kcal/rat/d, respectively and in HF restricted with HFS restricted (41.7 and 41.6 kcal/rat/d, respectively. Conclusion: results of this study suggest that antioxidants supplement might be of value in reducing the likelihood of obesity in rats fed with high-fat diets, especially when accompanying with restricted diets.
Allelic structure and distribution of 103 STR loci in a Southern Tunisian population
Abdellatif Maalej; Ahmed Rebai; Adnen Ayadi; Jomaa Jouida; Hafedh Makni; Hammadi Ayadi
2004-04-01
Genotypes of 103 short tandem repeat (STR) markers distributed at an average of 40 cM intervals throughout the genome were determined for 40 individuals from the village of BirEl Hfai (BEH). This village of approximately 31.000 individuals is localized in the south-west of Tunisia. The allele frequency distributions in BEH were compared with those obtained for individuals in the CEPH (Centre d’Etude du Polymorphisme Humain) data using a Kolmogorov–Smirnov two-sample test. Fourteen out of the 103 markers (13.2%) showed significant differences ($P\\lt 0.05$) in distribution between the two populations. Population heterogeneity in BEH was indicated by an excess of observed homozygosity deviations from Hardy–Weinberg equilibrium at 3 loci ($P\\lt 0.0005$). No evidence for genotypic disequilibrium was found for any of the marker pairs. This demonstrated that in spite of a high inbreeding level in the population, few markers showed evidence for a different pattern of allelic distribution compared to CEPH.
Modelling road accident blackspots data with the discrete generalized Pareto distribution.
Prieto, Faustino; Gómez-Déniz, Emilio; Sarabia, José María
2014-10-01
This study shows how road traffic networks events, in particular road accidents on blackspots, can be modelled with simple probabilistic distributions. We considered the number of crashes and the number of fatalities on Spanish blackspots in the period 2003-2007, from Spanish General Directorate of Traffic (DGT). We modelled those datasets, respectively, with the discrete generalized Pareto distribution (a discrete parametric model with three parameters) and with the discrete Lomax distribution (a discrete parametric model with two parameters, and particular case of the previous model). For that, we analyzed the basic properties of both parametric models: cumulative distribution, survival, probability mass, quantile and hazard functions, genesis and rth-order moments; applied two estimation methods of their parameters: the μ and (μ+1) frequency method and the maximum likelihood method; used two goodness-of-fit tests: Chi-square test and discrete Kolmogorov-Smirnov test based on bootstrap resampling; and compared them with the classical negative binomial distribution in terms of absolute probabilities and in models including covariates. We found that those probabilistic models can be useful to describe the road accident blackspots datasets analyzed.
Estimating return periods for daily precipitation extreme events over the Brazilian Amazon
Santos, Eliane Barbosa; Lucio, Paulo Sérgio; Santos e Silva, Cláudio Moisés
2016-11-01
This paper aims to model the occurrence of daily precipitation extreme events and to estimate the return period of these events through the extreme value theory (generalized extreme value distribution (GEV) and the generalized Pareto distribution (GPD)). The GEV and GPD were applied in precipitation series of homogeneous regions of the Brazilian Amazon. The GEV and GPD goodness of fit were evaluated by quantile-quantile (Q-Q) plot and by the application of the Kolmogorov-Smirnov (KS) test, which compares the cumulated empirical distributions with the theoretical ones. The Q-Q plot suggests that the probability distributions of the studied series are appropriated, and these results were confirmed by the KS test, which demonstrates that the tested distributions have a good fit in all sub-regions of Amazon, thus adequate to study the daily precipitation extreme event. For all return levels studied, more intense precipitation extremes is expected to occur within the South sub-regions and the coastal area of the Brazilian Amazon. The results possibly will have some practical application in local extreme weather forecast.
Rejkuba, M
2001-01-01
At the distance of NGC 5128 (3.6 \\pm 0.2 Mpc) it is possible to resolve globular clusters with high resolution imaging from the ground, thus allowing the globular cluster candidate selection primarily through their morphological properties. I report the discovery of 71 globular clusters in NGC 5128 on VLT UT1+FORS1 images, including the faintest members (Mv ~ -5) known to date in this galaxy as well as 5 previously known clusters. U- and V-band photometry has been measured for all the candidates and the luminosity function, spanning -10.1
Fatemeh Heidarnezhad
2016-06-01
Full Text Available Introduction: Limited data are available on the relationship between nutritional status and tuberculosis. The aim of this study was to evaluate and compare the body mass index (BMI and serum albumin level in patients with active tuberculosis (ATB and latent tuberculosis (LTB. Materials and Methods: A cross-sectional study was conducted on 17 patients newly diagnosed with pulmonary TB who were referred in Iran, during September 2011 to March 2012 and 17 latent tuberculosis infection individuals. Standard method was performed to collect an early morning fasting blood sample for albumin (by the bromocresolgreen method. Also (BMI was calculated as body weight divided by height squared (kg/m2. Results: One-sample Kolmogorov-Smirnov test was used to check normal distribution data The mean ± Standard deviation(SD for albumin in the patients and controls were 3.62±0/56 and 4.68±0.25, respectively. BMI in the patients and controls were 19.46±2.79 and 25.4±3.46, respectively. The serum albumin level was significantly lower in the patient group, compared to the control group (P
Theoretical model of ``fuzz'' growth
Krasheninnikov, Sergei; Smirnov, Roman
2012-10-01
Recent more detailed experiments on tungsten irradiation with low energy helium plasma, relevant to the near-wall plasma conditions in magnetic fusion reactor like ITER, demonstrated (e.g. see Ref. 1) a very dramatic change in both surface morphology and near surface material structure of the samples. In particular, it was shown that a long (mm-scale) and thin (nm-scale) fiber-like structures filled with nano-bubbles, so-called ``fuzz,'' start to grow. In this work theoretical model of ``fuzz'' growth [2] describing the main features observed in experiments is presented. This model, based on the assumption of enhancement of creep of tungsten containing significant fraction of helium atoms and clusters. The results of the MD simulations [3] support this idea and demonstrate a strong reduction of the yield strength for all temperature range. They also show that the ``flow'' of tungsten strongly facilitates coagulation of helium clusters and the formation of nano-bubbles.[4pt] [1] M. J. Baldwin, et al., J. Nucl. Mater. 390-391 (2009) 885;[0pt] [2] S. I. Krasheninnikov, Physica Scripta T145 (2011) 014040;[0pt] [3] R. D. Smirnov and S. I. Krasheninnikov, submitted to J. Nucl. Materials.
Mehmet Bani
2015-01-01
Full Text Available The aim of this study was to evaluate the apical microleakage of Biodentine and MTA orthograde apical plugs and to compare the effect of thickness of these biomaterials on their sealing ability. A total of eighty maxillary anterior teeth were used. The apices were removed by cutting with a diamond disc (Jota, Germany 2 mm from the apical root end in an attempt to standardize the working length of all specimens to 15 ± 1 mm. Both materials were placed in 1–4 mm thickness as apical plugs root canal. Root canal leakage was evaluated by the fluid filtration technique. One-way ANOVA was used in order to determine normality of dispersal distribution of parameters; thereafter, results were analyzed by Kolmogorov-Smirnov test. Overall, between microleakage values of MTA and Biodentine regardless of apical plug thickness, no difference was observed. In terms of plug thickness, a statistically significant difference was observed between the subgroups of MTA and Biodentine (p<0.05. The apical sealing ability of Biodentine was comparable to MTA at any apical plug thickness.
Bani, Mehmet; Sungurtekin-Ekçi, Elif; Odabaş, Mesut Enes
2015-01-01
The aim of this study was to evaluate the apical microleakage of Biodentine and MTA orthograde apical plugs and to compare the effect of thickness of these biomaterials on their sealing ability. A total of eighty maxillary anterior teeth were used. The apices were removed by cutting with a diamond disc (Jota, Germany) 2 mm from the apical root end in an attempt to standardize the working length of all specimens to 15 ± 1 mm. Both materials were placed in 1-4 mm thickness as apical plugs root canal. Root canal leakage was evaluated by the fluid filtration technique. One-way ANOVA was used in order to determine normality of dispersal distribution of parameters; thereafter, results were analyzed by Kolmogorov-Smirnov test. Overall, between microleakage values of MTA and Biodentine regardless of apical plug thickness, no difference was observed. In terms of plug thickness, a statistically significant difference was observed between the subgroups of MTA and Biodentine (p Biodentine was comparable to MTA at any apical plug thickness.
Plan of the Golden Horde Bolgar town: history and perspectives of research
Denis Yu. Badeev
2015-12-01
Full Text Available The paper presents findings of an extensive research into the urban plan of Bolgar. The authors present evolution of scholars’ perceptions (from the early 20th century to the present regarding the structural plan of this Golden Horde town. Some first ideas about the urban plan of the medieval Bolgar developed in the beginning of the 20th century. They were based on localization of then surviving ruins of large buildings and landscape features. Once some systematic archaeological research began (in 1938, it allowed the researchers to accumulate a vast amount of data about different elements of Bolgar’s urban planning. The territory of this fortified place revealed fragments of streets and squares with different types of paving, new monumental buildings and some buried structures. This allowed the researchers to advance a few versions regarding the development of its urban planning. Thus, A.P. Smirnov (1974 suggested a fan pattern for the development of its urban communications. The principle of historical landscape zoning of the urban territory into districts was formulated by T.A. Khlebnikova (1987. Thus, Kh.G. Nadyrova, a researcher of architectural history, classifies the Golden Horde town of Bolgar as a linear town, with distinguishable estates and urban districts (2013. Geo-information systems (GIS offer new opportunities for research of urban development of medieval hillforts. The article examines the newest elaborations concerning Bolgar, including their results and prospects.
Examination of the Life Satisfactions Levels of Students Receiving Education in Sports Sciences
Abdullah Bora ÖZKARA
2015-07-01
Full Text Available The aim of this study is to examine of life satisfaction levels of students receiving education in sports science according to some variabl es. To this aim, individual info form and Turkish form of life satisfaction questionnaire , developed by Diener, Emmos, Larsen and Griffin (1985 and adapted to Turkish by Kokler (1991 4, were administered ,as a online, to 25 4 students from Ağrı İbrahim Çeçen University, Afyon Kocatepe University, Dumlupınar University and Karadeniz Technical University with voluntary participation. Depending on the data on gender, smoking, universities,alchool using and family income were app lied Kolmogorov - Smirnov normality test. The tests results indicated that the data are not normally distributed. Depending on the data; for gender, smoking, alchool using Mann - Whitney U test, for universities and family income Kruskal - Wallis tests were use d at the level of α=0.05 significance.The result showed that there was no significant differences on genders ((Z 0.05 ; - 1,616; P>0.05, smoking (Z 0.05 ; - 1,556; P>0.05 and universities (X 2 (3; 0,.370; P>0.05 according to life satisfaction levels. On the o ther hand; alchool using (Z 0.05 ; - 2,008; P<0.05 and family income (X 2 (3; 10,257; P<0.05 scores were found significant depending on life satisfaction levels .
Larrañeta, M.; Moreno-Tejera, S.; Lillo-Bravo, I.; Silva-Pérez, M. A.
2017-06-01
Many of the available solar radiation databases only provide global horizontal irradiance (GHI) while there is a growing need of extensive databases of direct normal radiation (DNI) mainly for the development of concentrated solar power and concentrated photovoltaic technologies. In the present work, we propose a methodology for the generation of synthetic DNI hourly data from the hourly average GHI values by dividing the irradiance into a deterministic and stochastic component intending to emulate the dynamics of the solar radiation. The deterministic component is modeled through a simple classical model. The stochastic component is fitted to measured data in order to maintain the consistency of the synthetic data with the state of the sky, generating statistically significant DNI data with a cumulative frequency distribution very similar to the measured data. The adaptation and application of the model to the location of Seville shows significant improvements in terms of frequency distribution over the classical models. The proposed methodology applied to other locations with different climatological characteristics better results than the classical models in terms of frequency distribution reaching a reduction of the 50% in the Finkelstein-Schafer (FS) and Kolmogorov-Smirnov test integral (KSI) statistics.
Vaccaro, G; Pelaez, J I; Gil, J A
2016-07-01
Objective masticatory performance assessment using two-coloured specimens relies on image processing techniques; however, just a few approaches have been tested and no comparative studies are reported. The aim of this study was to present a selection procedure of the optimal image analysis method for masticatory performance assessment with a given two-coloured chewing gum. Dentate participants (n = 250; 25 ± 6·3 years) chewed red-white chewing gums for 3, 6, 9, 12, 15, 18, 21 and 25 cycles (2000 samples). Digitalised images of retrieved specimens were analysed using 122 image processing methods (IPMs) based on feature extraction algorithms (pixel values and histogram analysis). All IPMs were tested following the criteria of: normality of measurements (Kolmogorov-Smirnov), ability to detect differences among mixing states (anova corrected with post hoc Bonferroni) and moderate-to-high correlation with the number of cycles (Spearman's Rho). The optimal IPM was chosen using multiple criteria decision analysis (MCDA). Measurements provided by all IPMs proved to be normally distributed (P 0·5; P < 0·05). The variance of the histogram of the Hue showed the highest correlation with the number of cycles (ρ = 0·792; P < 0·0001) and the highest MCDA score (optimal). The proposed procedure proved to be reliable and able to select the optimal approach among multiple IPMs. This experiment may be reproduced to identify the optimal approach for each case of locally available test foods.
A Direct Comparison of Two Densely Sampled HIV Epidemics: The UK and Switzerland.
Ragonnet-Cronin, Manon L; Shilaih, Mohaned; Günthard, Huldrych F; Hodcroft, Emma B; Böni, Jürg; Fearnhill, Esther; Dunn, David; Yerly, Sabine; Klimkait, Thomas; Aubert, Vincent; Yang, Wan-Lin; Brown, Alison E; Lycett, Samantha J; Kouyos, Roger; Brown, Andrew J Leigh
2016-09-19
Phylogenetic clustering approaches can elucidate HIV transmission dynamics. Comparisons across countries are essential for evaluating public health policies. Here, we used a standardised approach to compare the UK HIV Drug Resistance Database and the Swiss HIV Cohort Study while maintaining data-protection requirements. Clusters were identified in subtype A1, B and C pol phylogenies. We generated degree distributions for each risk group and compared distributions between countries using Kolmogorov-Smirnov (KS) tests, Degree Distribution Quantification and Comparison (DDQC) and bootstrapping. We used logistic regression to predict cluster membership based on country, sampling date, risk group, ethnicity and sex. We analysed >8,000 Swiss and >30,000 UK subtype B sequences. At 4.5% genetic distance, the UK was more clustered and MSM and heterosexual degree distributions differed significantly by the KS test. The KS test is sensitive to variation in network scale, and jackknifing the UK MSM dataset to the size of the Swiss dataset removed the difference. Only heterosexuals varied based on the DDQC, due to UK male heterosexuals who clustered exclusively with MSM. Their removal eliminated this difference. In conclusion, the UK and Swiss HIV epidemics have similar underlying dynamics and observed differences in clustering are mainly due to different population sizes.
A monitoring protocol for vegetation change on Irish peatland and heath
O'Connell, J.; Connolly, J.; Holden, N. M.
2014-09-01
Amendments to Articles 3.3 and 3.4 of the Kyoto Protocol have meant that detection of vegetation change may now form an interracial part of national soil carbon stocks. In this study multispectral multi-platform satellite data was processed to detect change to the surface vegetation of four peatland sites and one heath in Ireland. Spectral and spatial thresholds were used on difference images between master and slave data in the extraction of temporally invariant targets for multi-platform cross calibration. The Kolmogorov-Smirnov test was used to evaluate any difference in the cumulative probability distributions of the master, slave and calibrated slave data as expressed by the D statistic, with values reduced by an average of 89.7% due to the cross calibration procedure. A change detection model was created which incorporated a spatial threshold of 9 pixels and a standard deviation (SD) spectral threshold. Kappa accuracy values for the five sites ranged from 80 to 97%, showing that 1.5 SD was the optimum spectral threshold for detecting vegetation change. Change detection results showed mean percentage change ranging from 2.11 to 3.28% of total area and cumulative change over the observed time period of between 15.24 and 49.27% of total area.
azam daneshvar
2016-06-01
Full Text Available Objective: The main aim of the study was comparing the main anthropometric and biomechanics indexes in elite male adult Wushu athletes in both Taolu and Sanda disciplines. Methods: The sample of the present study included 20 elite male Wushu athletes who were checked for 33 anthropometric and 11 biomechanical indexes. The normality of the data was checked by Kolmogorov–Smirnov normality measure. Factor Analysis was run to determine the main indexes and independent samples .T-test was used at a significance level of p<0.05 to compare the means. Results: The results showed that in Taolu group, sitting height, waist to pelvic circumference ratio and body fat percentage were higher. Also, the weight, arm length, leg length, head circumference, arm circumference in contraction, shoulder width, the width of the wrist and body mass index were greater in the Sanda group. There was a meaningful difference between endurance indices, lower limb muscular strength, semi dynamic balance in posterior-lateral direction, semi dynamic balance in right-anterior direction, semi dynamic balance in posterior-medial direction, semi dynamic balance in posterior-lateral direction (p<0.05. Conclusion: There is a significant difference in the main anthropometric and biomechanical indicators of Wushu in both Taolu and Sanda disciplines. It appears that balance, endurance – strength of foot in the biomechanical properties are the most important Indicators in Taolu.
Herick Fernando Moralles
2014-05-01
Full Text Available Given the weaknesses of the parametric VaR (Value-at-Risk calculated by normality assumptions, this paper develops a method of parametric VaR calculation considering ten different probability distributions. Specifically, the distribution to be used for the VaR calculation of a specific asset or portfolio is indicated by the Kolmogorov-Smirnov goodness-of-fit test. Additionally, the study compares the normality assumptions applicability for the VaR calculation of both individual assets, and to a large portfolio, in the context of market stability. The experiment makes use of a sample of 15 individual assets traded in the Sao Paulo Stock Exchange and the IBOVESPA index, collected in the Economática® database. The goodness-of-fit tests and VaR calculations are performed by a program developed in MATLAB7.1®. This investigation demonstrates that the assumption of normality brings good risk estimates for large portfolios and individual assets.
2007-01-01
Ecole de physique - Département de physique nucléaire et corspusculaire 24, Quai Ernest-Ansermet 1211 GENEVE 4 Tél: (022) 379 62 73 - Fax: (022) 379 69 92 Wednesday 28 November 2007 PARTICLE PHYSICS SEMINAR at 17.00 hrs – Stückelberg Auditorium Manifest non-locality of bound electromagnetic fields in near zone of radiating sources: experimental observationby Dr R. Smirnov-Rueda, Complutense University, Madrid SpainStandard relativistic locality (causality) is referred as impossibility of superluminal propagation. The creation of Quantum Mechanics (QM) led to Bell’s theorem which in the most general form sorted out QM predictions of strong correlations between space-like separated systems from probabilities of measurement outcomes calculated on the basis of local realism. EPR-type experiments gave support to QM predictions, casting doubts on standard locality. Since then common view has it that the quantum realm involves some type of misterious non-locality because it...
Yong Zhong
2016-01-01
Full Text Available This study investigated the size effect on the bending strength (modulus of rupture—MOR of dimension lumber of Northeast China larch (Larix gmelinii; providing a basis for the further application in light wood frame construction. Experimental and statistical evaluations were conducted on the bending strength. A total of 2409 full-size dimension lumber samples were tested by static bending tests; which included three different sizes: 2 × 3; 2 × 4; and 2 × 6. Results indicate that the size has a significant effect on the MOR. Both the chi-square (χ2 and Kolmogorov-Smirnov (K-S test results show that the lognormal distribution generally fits to the MOR better than to the normal distribution. Additionally; the effects of partial safety factor (γR and live-to-dead load ratio (ρ were studied by reliability analysis. Reliability analysis results indicate that the reliability index increases nonlinearly with the decrease of γR and the rise of ρ. Finally; the design value of bending strength and its adjusting factor of size effect of 2 × 3; 2 × 4; and 2 × 6 larch dimension lumber were obtained according to the Chinese National Standards’ requirements of the reliability index.
Jamshid Salehi Sadaghiani
2013-05-01
Full Text Available This research surveys the relationship between emotional intelligence and organizational indifference through a commitment. The study first presents theoretical models over the investigation then six hypotheses are developed based on the conceptual model for this opinion. Questionnaire contains 16 questions for organizational indifference and 20 questions for organizational commitment and 23 questions for emotional intelligence. The Cronbach's alpha of organizational indifference questionnaire is 0.938 and the Cronbach's alpha of organizational commitment questionnaire is equal to 0.802 and Emotional Intelligence questionnaire reliability coefficient is 0.961. Both questionnaires maintain sufficient reliability because their Cronbach alphas are more than 0.7. The sample size is chosen according KREJCIE and Morgan table and is equal to 235 people. Kolmongrov – Smirnov test is used for normality of the obtained data. Research hypothesis and the correlations between variables are tested by Spearman correlation test. The results imply approval of all research hypotheses and significant relationship between emotional intelligence and organizational indifference.
Baharara Javad
2014-01-01
Full Text Available Introduction: Electromagnetic fields produce free radicals which might be teratogen. Camellia sinensis is rich in natural antioxidants and antioxidants can neutralize free radicals effects. In present research the effect of C. sinensis extract in reduction of teratogenicity induced by electromagnetic field with 50 gauss intensity was studied on bone marrow of Balb/C mice fetuses. Methods: In this experimental study, 24 Balb/C pregnant mice were randomly divided into four groups: control, sham exposed (off position, experimental 1 (electromagnetic field with 50-gauss intensity and experimental 2 (treatment by C. sinensis extract + electromagnetic field with 50-gauss intensity. After treatment period, the bone marrow aspirates of Balb/C mice embryos were prepared and studied by Giemsa. The quantitative data were analyzed by Kruskal-Wallis and Kolmogorov- Smirnov using SPSS16 software at the level of p<0.05. Results: The mean number of promyelocytes, myelocytes, erythrocytes, necrotic and apoptotic cells in experimental group1 compared with sham exposed embryos showed significant increase but the mean number of eosinophils in experimental group 1 compared with sham exposed embryos showed significant decrease. The mean number of promyelocyte and erythrocyte in experimental group 2 compared with experimental group 1 showed significant decrease. The mean of necrotic and apoptotic cells, in experimental group 2 compared with experimental group 1 showed significant increase. Conclusion: Usage of C. sinensis can decrease the damage due to teratogenicity induced by low frequency electromagnetic field in some cells.
Power-law distributions in empirical data
Clauset, Aaron; Newman, M E J
2007-01-01
Power-law distributions occur in many situations of scientific interest and have significant consequences for our understanding of natural and man-made phenomena. Unfortunately, the empirical detection and characterization of power laws is made difficult by the large fluctuations that occur in the tail of the distribution. In particular, standard methods such as least-squares fitting are known to produce systematically biased estimates of parameters for power-law distributions and should not be used in most circumstances. Here we describe statistical techniques for making accurate parameter estimates for power-law data, based on maximum likelihood methods and the Kolmogorov-Smirnov statistic. We also show how to tell whether the data follow a power-law distribution at all, defining quantitative measures that indicate when the power law is a reasonable fit to the data and when it is not. We demonstrate these methods by applying them to twenty-four real-world data sets from a range of different disciplines. Eac...
Shibuya, Takatoshi; Nakajima, Kimihiko; Hashimoto, Takuya; Ono, Yoshiaki; Rauch, Michael; Gauthier, Jean-Rene; Shimasaku, Kazuhiro; Goto, Ryosuke; Mori, Masao; Umemura, Masayuki
2014-01-01
We present a statistical study of velocities of Lya, interstellar (IS) absorption, and nebular lines and gas covering fraction for Lya emitters (LAEs) at z~2. We make a sample of 22 LAEs with a large Lya equivalent width (EW) of > 50A based on our deep Keck/LRIS observations, in conjunction with spectroscopic data from the Subaru/FMOS program and the literature. We estimate the average velocity offset of Lya from a systemic redshift determined with nebular lines to be dv_Lya=234+-9 km s-1. Using a Kolmogorv-Smirnov test, we confirm the previous claim of Hashimoto et al. (2013) that the average dv_Lya of LAEs is smaller than that of LBGs. Our LRIS data successfully identify blue-shifted multiple IS absorption lines in the UV continua of four LAEs on an individual basis. The average velocity offset of IS absorption lines from a systemic redshift is dv_IS=204+-27 km s-1, indicating LAE's gas outflow with a velocity comparable to typical LBGs. Thus, the ratio, R^Lya_ IS = dv_Lya/dv_IS of LAEs, is around unity, su...
Valenza, Gaetano; Citi, Luca; Scilingo, Enzo Pasquale; Barbieri, Riccardo
2014-01-01
Measures of entropy have been proved as powerful quantifiers of complex nonlinear systems, particularly when applied to stochastic series of heartbeat dynamics. Despite the remarkable achievements obtained through standard definitions of approximate and sample entropy, a time-varying definition of entropy characterizing the physiological dynamics at each moment in time is still missing. To this extent, we propose two novel measures of entropy based on the inho-mogeneous point-process theory. The RR interval series is modeled through probability density functions (pdfs) which characterize and predict the time until the next event occurs as a function of the past history. Laguerre expansions of the Wiener-Volterra autoregressive terms account for the long-term nonlinear information. As the proposed measures of entropy are instantaneously defined through such probability functions, the proposed indices are able to provide instantaneous tracking of autonomic nervous system complexity. Of note, the distance between the time-varying phase-space vectors is calculated through the Kolmogorov-Smirnov distance of two pdfs. Experimental results, obtained from the analysis of RR interval series extracted from ten healthy subjects during stand-up tasks, suggest that the proposed entropy indices provide instantaneous tracking of the heartbeat complexity, also allowing for the definition of complexity variability indices.
Kawecki, Stephanie; Kuleck, Gary; Dorsey, John H; Leary, Christopher; Lum, Michelle
2017-06-01
Screening for the prevalence of antibiotic-resistant bacteria (ARB) was done at the Ballona Creek and Wetlands, an urban-impacted wetland system in Los Angeles, California. The goals were (1) to assess the overall prevalence of ARB, and (2) compare differences in ARB abundance and the types of antibiotic resistance (AR) among the following sample types: lagoon water from Del Rey Lagoon, urban runoff from Ballona Creek, and water from the Ballona Wetlands (tidal water flooding in from the adjacent estuary, and ebbing out from the salt marsh). Antibiotic resistance distributions were analyzed using the Kolmogorov-Smirnov test to develop the cumulative frequency of bacteria having resistance of up to eight antibiotics. Distributions from the environmental water samples were compared to unchlorinated secondary effluent from the Hyperion Water Reclamation Plant that was used as comparator samples likely to have an abundance of ARB. As expected, densities of total and ARB were highest in secondary effluent, followed by urban runoff. Samples of water flooding into the wetlands showed similar results to urban runoff; however, a reduction in densities of total and ARB occurred in water ebbing out of the wetlands. During preliminary work to identify ARB species, several bacterial species of relevance to human illness (e.g., Staphylococcus aureus, Enterococcus hirae, Pseudomonas aeruginosa, Aeromonas veronii, Enterobacter cancerogenus, Serratia marcescens, Pseudomonas stutzeri, and Staphylococcus intermedius) were isolated from sampled waters. If wetlands are a sink for ARB, construction and restoration of wetlands can help in the mediation of this human and environmental health concern.
XIA Jun; DU Hong; ZENG Sidong; SHE Dunxian; ZHANG Yongyong; YAN Ziqi; YE Yan
2012-01-01
Based on the daily runoff data from 20 hydrological stations above the Bengbu Sluice in the Huaihe River Basin during 1956-2010,run test,trend test and Mann-Kendall test are used to analyze the variation trend of annual maximum runoff series.The annual maximum series (AM) and peaks over threshold series (POT) are selected to describe the extreme distributions of generalized extreme value distribution (GEV) and generalized Pareto distribution (GPD).Temporal and spatial variations of extreme runoff in the Huaihe River Basin are analyzed.The results show that during the period 1956-2010 in the Huaihe River Basin,annual maximum runoff at 10 stations have a decreasing trend,while the other 10 stations have an unobvious increasing trend.The maximum runoff events almost occurred in the flood period during the 1960s and 1970s.The extreme runoff events in the Huaihe River Basin mainly occurred in the mainstream of the Huaihe River,Huainan mountainous areas,and Funiu mountainous areas.Through Kolmogorov-Smirnov test,GEV and GPD distributions can be well fitted with AM and POT series respectively.Percentile value method,mean excess plot method and certain numbers of peaks over threshold method are used to select threshold,and it is found that percentile value method is the best of all for extreme runoff in the Huaihe River Basin.%@@
Fading Evaluation in the 60 GHz Band in Line-of-Sight Conditions
J. Reig
2014-01-01
Full Text Available An exhaustive analysis of the small-scale fading amplitude in the 60 GHz band is addressed for line-of-sight conditions (LOS. From a measurement campaign carried out in a laboratory, we have estimated the distribution of the small-scale fading amplitude over a bandwidth of 9 GHz. From the measured data, we have estimated the parameters of the Rayleigh, Rice, Nakagami-m, Weibull, and α-μ distributions for the small-scale amplitudes. The test of Kolmogorov-Smirnov (K-S for each frequency bin is used to evaluate the performance of such statistical distributions. Moreover, the distributions of the main estimated parameters for such distributions are calculated and approximated for lognormal statistics in some cases. The matching of the above distributions to the experimental distribution has also been analyzed for the lower tail of the cumulative distribution function (CDF. These parameters offer information about the narrowband channel behavior that is useful for a better knowledge of the propagation characteristics at 60 GHz.
Zlatanov, Nikola; Karagiannidis, George; 10.1109/TWC.2010.01.090457
2010-01-01
There are several cases in wireless communications theory where the statistics of the sum of independent or correlated Nakagami-m random variables (RVs) is necessary to be known. However, a closed-form solution to the distribution of this sum does not exist when the number of constituent RVs exceeds two, even for the special case of Rayleigh fading. In this paper, we present an efficient closed-form approximation for the distribution of the sum of arbitrary correlated Nakagami-m envelopes with identical and integer fading parameters. The distribution becomes exact for maximal correlation, while the tightness of the proposed approximation is validated statistically by using the Chi-square and the Kolmogorov-Smirnov goodness-of-fit tests. As an application, the approximation is used to study the performance of equal-gain combining (EGC) systems operating over arbitrary correlated Nakagami-m fading channels, by utilizing the available analytical results for the error-rate performance of an equivalent maximal-rat...
Julianne de Castro Oliveira
2012-06-01
Full Text Available The objective of this study was to evaluate the effectiveness of fatigue life, Frechet, Gamma, Generalized Gamma, Generalized Logistic, Log-logistic, Nakagami, Beta, Burr, Dagum, Weibull and Hyperbolic distributions in describing diameter distribution in teak stands subjected to thinning at different ages. Data used in this study originated from 238 rectangular permanent plots 490 m2 in size, installed in stands of Tectona grandis L. f. in Mato Grosso state, Brazil. The plots were measured at ages 34, 43, 55, 68, 81, 82, 92, 104, 105, 120, 134 and 145 months on average. Thinning was done in two occasions: the first was systematic at age 81months, with a basal area intensity of 36%, while the second was selective at age 104 months on average and removed poorer trees, reducing basal area by 30%. Fittings were assessed by the Kolmogorov-Smirnov goodness-of-fit test. The Log-logistic (3P, Burr (3P, Hyperbolic (3P, Burr (4P, Weibull (3P, Hyperbolic (2P, Fatigue Life (3P and Nakagami functions provided more satisfactory values for the k-s test than the more commonly used Weibull function.
Kandel, Sonja; Kloeters, Christian; Meyer, Henning; Hein, Patrick; Rogalla, Patrik [Charite - Universitaetsmedizin Berlin, Department of Radiology, Campus Charite Mitte, Berlin (Germany); Hilbig, Andreas [Charite - University Medicine, Medical Clinic III - Hematology and Oncology, Campus Virchow Klinikum, Berlin (Germany)
2009-11-15
The purpose of this study was to evaluate a whole-organ perfusion protocol of the pancreas in patients with primary pancreas carcinoma and to analyse perfusion differences between normal and diseased pancreatic tissue. Thirty patients with primary pancreatic malignancy were imaged on a 320-slice CT unit. Twenty-nine cancers were histologically proven. CT data acquisition was started manually after contrast-material injection (8 ml/s, 350 mg iodine/ml) and dynamic density measurements in the right ventricle. After image registration, perfusion was determined with the gradient-relationship technique and volume regions-of-interest were defined for perfusion measurements. Contrast time-density curves and perfusion maps were generated. Statistical analysis was performed using the Kolmogorov-Smirnov test for analysis of normal distribution and Kruskal-Wallis test (nonparametric ANOVA) with Bonferroni correction for multiple stacked comparisons. In all 30 patients the entire pancreas was imaged, and registration could be completed in all cases. Perfusion of pancreatic carcinomas was significantly lower than of normal pancreatic tissue (P < 0.001) and could be visualized on colored perfusion maps. The 320-slice CT allows complete dynamic visualization of the pancreas and enables calculation of whole-organ perfusion maps. Perfusion imaging carries the potential to improve detection of pancreatic cancers due to the perfusion differences. (orig.)
徐志军; 郑俊杰; 边晓亚
2012-01-01
Based on normal information spread theory, a new method is presented to fit the probability distribution of settlement of subgrade, and the correctness of the presented method is verified using Kolmogorov-Smirnov testing method. Beta distribution is chosen as the membership function of the fuzzy event of settlement for subgrade, which solves the deficiencies of common membership function. Meanwhile, the fuzzy reliability index of settlement for subgrade is calculated according to fuzzy reliability theory. Finally, the validity of presented method is verified through case study.%基于正态信息理论,给出了路基沉降概率分布的拟合方法,并利用精度较高K-S检验法验证了该方法的正确性.将Beta分布引入路基沉降模糊失效事件的隶属函数中,解决了常用隶属函数存在的不足.同时,利用模糊可靠度理论,给出了路基沉降模糊可靠度的计算公式.最后通过工程实例验证了本文方法的有效性.
Quantitative statistical assessment of conditional models for synthetic aperture radar.
DeVore, Michael D; O'Sullivan, Joseph A
2004-02-01
Many applications of object recognition in the presence of pose uncertainty rely on statistical models-conditioned on pose-for observations. The image statistics of three-dimensional (3-D) objects are often assumed to belong to a family of distributions with unknown model parameters that vary with one or more continuous-valued pose parameters. Many methods for statistical model assessment, for example the tests of Kolmogorov-Smirnov and K. Pearson, require that all model parameters be fully specified or that sample sizes be large. Assessing pose-dependent models from a finite number of observations over a variety of poses can violate these requirements. However, a large number of small samples, corresponding to unique combinations of object, pose, and pixel location, are often available. We develop methods for model testing which assume a large number of small samples and apply them to the comparison of three models for synthetic aperture radar images of 3-D objects with varying pose. Each model is directly related to the Gaussian distribution and is assessed both in terms of goodness-of-fit and underlying model assumptions, such as independence, known mean, and homoscedasticity. Test results are presented in terms of the functional relationship between a given significance level and the percentage of samples that wold fail a test at that level.
Kartikasari, A. D.; Indrawati, D.; Kamizar
2017-08-01
A good marginal adaptation of a restoration can be measured by the absence of microleakage at the interface area. Resin composite undergo contraction during polymerization which may result in microleakage The purpose of this study was to analyze the microleakage of class I cavity preparations that were filled with sonic-activated bulk-fill resin composite, bulk-fill resin composite without sonic activation, and composites that were filled incrementally Standardized class I cavities were prepared in 27 extracted human upper premolars and randomly assigned to three groups. The first group was filled with sonic-activated bulk-fill resin composite; the second group was filled with bulk-fill resin composite without sonic activation; and the third group was filled incrementally. The specimens were subjected to: thermocycling; immersion in 1% methylene blue dye for 24 hours; sectioning longitudinally; evaluation of microleakage under a 12 x magnification stereomicroscope; and scoring on an ordinal scale (0-4). Statistical analysis was performed with a Kolmogorov-Smirnov test. There were no statistically significant differences among the three groups. Class I cavity preparations that were filled with resin composites incrementally have less microleakage compared to both sonic-activated bulk-fill and bulk-fill without sonic activation.
Indra A.S.L.P. Putri
2015-09-01
Full Text Available Submontane forest is considered as one of the biodiversity hotspot. Scientific information on bird diversity in this forest, however are lacking. The aim of this research was to find out submontane forest bird diversity and its conservation management. The research was carried out in three forests areas at Bantimurung Bulusaraung National Park submontane forest. Point Count method was used to observe bird population. Data were analyzed using Shannon-Weiner diversity index, Pielou Evenness index, Simpson dominance index, Margalef species richness index, and Sorensen Similarity index. The significance different between the number of individual bird was tested using Kolmogorov-Smirnov test. The result showed that submontane forest at Bantimurung Bulusaraung National Park is rich in bird diversity, bird endemic species and protected bird species. There was a significant different on the number of individual bird at several human disturbance levels. Based on these conditions, it is important to enhance understanding of the local people regarding zonation and develop cooperation with many stakeholders to increase the local community awareness concerning forest conservation. It is also necessary to ensure the sustainability of the National Park’s conservation program to maintain the submontane forest conservation.
Hassan Ghorbani
2013-11-01
Full Text Available The present paper, titled ‘A Study of the Effect of reward systemʼs mechanisms on new product development the mediating role of knowledge-sharing’ examines the important role of rewarding mechanisms in facilitating the knowledge-sharing among individuals and the effects of a joint reward system on knowledge-sharing among the members and the new product development performance in home appliances factories in Isfahan Province. This research, in terms of its purpose, is an applied one; and in terms of implementation method, is a survey with a correlation approach. The statistical population include 170 managers (senior, marketing, manufacturing and R&D of the home appliances manufacturing companies in Esfahan Province. Since the population is limited no sampling is necessary. Thus, the whole population is studied. The data collection tool is a researcher-made questionnaire containing 30 items, of which the validity has been confirmed using the comments from advisors, professionals and experts; and the reliability, determined through Cronbach's alpha coefficient of 92% The questionnaire includes personal data and main, specialized items for examining the research hypotheses. The collected data were analyzed using SPSS and AMOS software programs through statistical tests at descriptive (frequency, percentage, accumulated percentage, average and standard deviation and inferential (t-test, regression modeling, variance analysis, non- parametric Kolmogorov and Smirnov test, and Freedman non-parametric test levels. According to the results obtained, all hypotheses were supported.
Ranking agility factors affecting hospitals in Iran
M. Abdi Talarposht
2017-04-01
Full Text Available Background: Agility is an effective response to the changing and unpredictable environment and using these changes as opportunities for organizational improvement. Objective: The aim of the present study was to rank the factors affecting agile supply chain of hospitals of Iran. Methods: This applied study was conducted by cross sectional-descriptive method at some point of 2015 for one year. The research population included managers, administrators, faculty members and experts were selected hospitals. A total of 260 people were selected as sample from the health centers. The construct validity of the questionnaire was approved by confirmatory factor analysis test and its reliability was approved by Cronbach's alpha (α=0.97. All data were analyzed by Kolmogorov-Smirnov, Chi-square and Friedman tests. Findings: The development of staff skills, the use of information technology, the integration of processes, appropriate planning, and customer satisfaction and product quality had a significant impact on the agility of public hospitals of Iran (P<0.001. New product introductions had earned the highest ranking and the development of staff skills earned the lowest ranking. Conclusion: The new product introduction, market responsiveness and sensitivity, reduce costs, and the integration of organizational processes, ratings better to have acquired agility hospitals in Iran. Therefore, planners and officials of hospitals have to, through the promotion quality and variety of services customer-oriented, providing a basis for investing in the hospital and etc to apply for agility supply chain public hospitals of Iran.
An R package for statistical provenance analysis
Vermeesch, Pieter; Resentini, Alberto; Garzanti, Eduardo
2016-05-01
This paper introduces provenance, a software package within the statistical programming environment R, which aims to facilitate the visualisation and interpretation of large amounts of sedimentary provenance data, including mineralogical, petrographic, chemical and isotopic provenance proxies, or any combination of these. provenance comprises functions to: (a) calculate the sample size required to achieve a given detection limit; (b) plot distributional data such as detrital zircon U-Pb age spectra as Cumulative Age Distributions (CADs) or adaptive Kernel Density Estimates (KDEs); (c) plot compositional data as pie charts or ternary diagrams; (d) correct the effects of hydraulic sorting on sandstone petrography and heavy mineral composition; (e) assess the settling equivalence of detrital minerals and grain-size dependence of sediment composition; (f) quantify the dissimilarity between distributional data using the Kolmogorov-Smirnov and Sircombe-Hazelton distances, or between compositional data using the Aitchison and Bray-Curtis distances; (e) interpret multi-sample datasets by means of (classical and nonmetric) Multidimensional Scaling (MDS) and Principal Component Analysis (PCA); and (f) simplify the interpretation of multi-method datasets by means of Generalised Procrustes Analysis (GPA) and 3-way MDS. All these tools can be accessed through an intuitive query-based user interface, which does not require knowledge of the R programming language. provenance is free software released under the GPL-2 licence and will be further expanded based on user feedback.
X-ray spectral and timing characteristics of the stars in the young open cluster IC 2391
Marino, A; Peres, G; Pillitteri, I; Sciortino, S
2004-01-01
We present X-ray spectral and timing analysis of members of the young open cluster IC 2391 observed with the XMM-Newton observatory. We detected 99 X-ray sources by analysing the summed data obtained from MOS1, MOS2 and pn detectors of the EPIC camera; 24 of them are members, or probable members, of the cluster. Stars of all spectral types have been detected, from the early-types to the late-M dwarfs. Despite the capability of the instrument to recognize up to 3 thermal components, the X-ray spectra of the G, K and M members of the cluster are well described with two thermal components (at kT$_1 \\sim$ 0.3-0.5 keV and kT$_2 \\sim$ 1.0-1.2 keV respectively) while the X-ray spectra of F members require only a softer 1-T model. The Kolmogorov-Smirnov test applied to the X-ray photon time series shows that approximately 46% of the members of IC 2391 are variable with a confidence level $>$99%. The comparison of our data with those obtained with ROSAT/PSPC, nine years earlier, and ROSAT/HRI, seven years earlier, sho...
Modeling and forecasting foreign exchange daily closing prices with normal inverse Gaussian
Teneng, Dean
2013-09-01
We fit the normal inverse Gaussian(NIG) distribution to foreign exchange closing prices using the open software package R and select best models by Käärik and Umbleja (2011) proposed strategy. We observe that daily closing prices (12/04/2008 - 07/08/2012) of CHF/JPY, AUD/JPY, GBP/JPY, NZD/USD, QAR/CHF, QAR/EUR, SAR/CHF, SAR/EUR, TND/CHF and TND/EUR are excellent fits while EGP/EUR and EUR/GBP are good fits with a Kolmogorov-Smirnov test p-value of 0.062 and 0.08 respectively. It was impossible to estimate normal inverse Gaussian parameters (by maximum likelihood; computational problem) for JPY/CHF but CHF/JPY was an excellent fit. Thus, while the stochastic properties of an exchange rate can be completely modeled with a probability distribution in one direction, it may be impossible the other way around. We also demonstrate that foreign exchange closing prices can be forecasted with the normal inverse Gaussian (NIG) Lévy process, both in cases where the daily closing prices can and cannot be modeled by NIG distribution.
Haroon Hussain
2013-01-01
Full Text Available This research study focuses the existence of “weak form efficiency” in the Karachi stock exchange of Pakistan. Daily stock returns are used to check the “weak form efficiency’ in KSE covering a time period of 15 years ranges from July, 1997 to April, 2012. Kolmogrov-Smirnov (K-S test, runs test, Unit root test Augumented Dickey Fuller test, Phillips Perron test are run to check the hypothesis. It is revealed that the KSE is not distributed normally and patterns are there in the prices so, the technical analyst can get the benefit in short run through predicting the future prices. This means that there exists some opportunity for the traders and investors to predict the upcoming stock prices of the securities, which are trading in the KSE and can earn high return and outperform the market. However, in long run scenario (in monthly data the results are vice versa and Karachi stock exchange is a weak form efficient market.
George Săraci
2011-11-01
Full Text Available Objective: To determine the main epidemiologic characteristics of esophageal pathology,insisting on gastroesophageal reflux disease (GERD, Barrett’s esophagus (BE and to evaluate therelationship between these conditions and some widely spread risk factors. Material and methods: Datawere collected from clinical file records archive, endoscopy reports and histopatologic reports and slidesfor 8225 patients (01.01.2005-31.07.2007 who presented esophageal changes during upper digestiveendoscopy. We used Kolmogorov-Smirnov test to assess the normality of variables distribution and thenwe used parametric or non-parametric tests along with multivariate analysis. Results: BE is associatedwith male sex (r=0.039; pHelicobacter pylori (Hp infection(r=0.024; p=0.02. Age is not an important factor (OR=0.99; p=0.03. Presence of sliding hiatal hernia(SHH is influenced by body mass index (r=0.533; p<0.001 and female sex (p=0.001. SHH sizeinfluences the severity of esophagitis (r=0.04; p<0.01. The most frequent type of metaplasia is theincomplete intestinal one and the most frequent form of esophageal cancer is adenocarcinoma.Conclusion: BE is associated positively with GERD, esophagitis, male sex and negatively with Hp andesophageal varices. SHH influences severity of esophagitis and is more frequent in female patients.Adenocarcinoma is more frequent that squamous esophageal cancer.
Barbaros Serdar ERDOĞAN
2015-03-01
Full Text Available The aim of the study is to investigate the correlation between the attitudes of young people who do sports and their self-esteem. The research group included 83 men and 117 women ( age=21,49 + 1,659, as a total 200, who make exercises at least 1 year in special gym center in Antalya and Konya . Self-esteem scale developed by Arıcak (1999 and Dealing with Stress Scales developed by Özbay (1993 were used to reach the aim of the study. Meaningfulness was acquired as P<0,05 by using Kolmogorov-Smirnov test, t testand Pearson Correlation while commenting on the data. SPSS (Statistical package for social sciencesprogramme was used to evaluate the data. At the end of the research meaningful and direct correlation was acquired .01 (P<0,01 between sub dimensions active planning of dealing with stress and value of ego (r=497, self- confident (r=577, depressive emotion (r=531, self-sufficiency (r=572, succsess and productivity (r=476 As a general result different attitudes to cope with the stress were seen in the youth participants because of their gender’s characteristics and it was thought that the correlation between those attitudes and their self -esteem was at the medium and higher-up level.
The solar neutrino problem after the first results from KamLAND
Bandyopadhyay, Abhijit; Choubey, Sandhya; Gandhi, Raj; Goswami, Srubabati; Roy, D.P
2003-05-01
The first results from the KamLAND experiment have provided confirmational evidence for the Large Mixing Angle (LMA) Mikheyev-Smirnov-Wolfenstein (MSW) solution to the solar neutrino problem. We do a global analysis of solar and the recently announced KamLAND data (both rate and spectrum) and investigate its effect on the allowed region in the {delta}m{sup 2}-tan{sup 2}{theta} plane. The best-fit from a combined analysis which uses the KamLAND rate plus global solar data comes at {delta}m{sup 2}=6.06x10{sup -5} eV{sup 2} and tan{sup 2}{theta}=0.42, very close to the global solar best-fit, leaving a large allowed region within the global solar LMA contour. The inclusion of the KamLAND spectral data in the global fit gives a best-fit {delta}m{sup 2}=7.17x10{sup -5} eV{sup 2} and tan{sup 2}{theta}=0.43 and constrains the allowed areas within LMA, leaving essentially two allowed zones. Maximal mixing though allowed by the KamLAND data alone is disfavored by the global solar data and remains disallowed at about 3{sigma}. The low {delta}m{sup 2} solution (LOW) is now ruled out at about 5{sigma} with respect to the LMA solution.
Bui, Thanh Minh; Coron, Alain; Mamou, Jonathan; Saegusa-Beecroft, Emi; Yamaguchi, Tadashi; Yanagihara, Eugene; Machi, Junji; Bridal, S. Lori; Feleppa, Ernest J.
2014-01-01
This work investigates the statistics of the envelope of three-dimensional (3D) high-frequency ultrasound (HFU) data acquired from dissected human lymph nodes (LNs). Nine distributions were employed, and their parameters were estimated using the method of moments. The Kolmogorov Smirnov (KS) metric was used to quantitatively compare the fit of each candidate distribution to the experimental envelope distribution. The study indicates that the generalized gamma distribution best models the statistics of the envelope data of the three media encountered: LN parenchyma, fat and phosphate-buffered saline (PBS). Furthermore, the envelope statistics of the LN parenchyma satisfy the pre-Rayleigh condition. In terms of high fitting accuracy and computationally efficient parameter estimation, the gamma distribution is the best choice to model the envelope statistics of LN parenchyma, while, the Weibull distribution is the best choice to model the envelope statistics of fat and PBS. These results will contribute to the development of more-accurate and automatic 3D segmentation of LNs for ultrasonic detection of clinically significant LN metastases. PMID:25346951
Carolina Ospina-Aguirre
2008-12-01
Full Text Available In order to characterize physiological signals, which may have highly nonlinear structures, it’s common to use methodologies derived from fractal techniques that make part of complexity analysis. This work proposes is proposed an evaluation function based on measuring the capacity of prediction of a neural network trained with Kalman filter to predict points in a reconstructed state space attractor, so measuring the quality of the attractor from a onedimensional signal. We propose use of statistic measures such as Kullback –Leibler, Kolmogorov-Smirnov and Hellinger to determine difference between the embedded statistic structure in the predicted points and the original signal points. Results were obtained on attractor reconstruction from ECG signals of MIT-BIH database and EEG signals obtained from Clinic for Epileptologie Epileptologie Bonn University database. In this way, it was possible to evaluate the prediction capacity corresponding to reconstruct attractors from records, from which we concluded that an attractor with high capacity of time series prediction implies good embedding properties in state space.
Distribution of Earthquake Interevent Times in Northeast India and Adjoining Regions
Pasari, Sumanta; Dikshit, Onkar
2015-10-01
This study analyzes earthquake interoccurrence times of northeast India and its vicinity from eleven probability distributions, namely exponential, Frechet, gamma, generalized exponential, inverse Gaussian, Levy, lognormal, Maxwell, Pareto, Rayleigh, and Weibull distributions. Parameters of these distributions are estimated from the method of maximum likelihood estimation, and their respective asymptotic variances as well as confidence bounds are calculated using Fisher information matrices. Three model selection criteria namely the Chi-square criterion, the maximum likelihood criterion, and the Kolmogorov-Smirnov minimum distance criterion are used to compare model suitability for the present earthquake catalog (Y adav et al. in Pure Appl Geophys 167:1331-1342, 2010). It is observed that gamma, generalized exponential, and Weibull distributions provide the best fitting, while exponential, Frechet, inverse Gaussian, and lognormal distributions provide intermediate fitting, and the rest, namely Levy, Maxwell Pareto, and Rayleigh distributions fit poorly to the present data. The conditional probabilities for a future earthquake and related conditional probability curves are presented towards the end of this article.
Bui, Thanh Minh; Coron, Alain; Mamou, Jonathan; Saegusa-Beecroft, Emi; Yamaguchi, Tadashi; Yanagihara, Eugene; Machi, Junji; Bridal, S Lori; Feleppa, Ernest J
2014-01-01
This work investigates the statistics of the envelope of three-dimensional (3D) high-frequency ultrasound (HFU) data acquired from dissected human lymph nodes (LNs). Nine distributions were employed, and their parameters were estimated using the method of moments. The Kolmogorov Smirnov (KS) metric was used to quantitatively compare the fit of each candidate distribution to the experimental envelope distribution. The study indicates that the generalized gamma distribution best models the statistics of the envelope data of the three media encountered: LN parenchyma, fat and phosphate-buffered saline (PBS). Furthermore, the envelope statistics of the LN parenchyma satisfy the pre-Rayleigh condition. In terms of high fitting accuracy and computationally efficient parameter estimation, the gamma distribution is the best choice to model the envelope statistics of LN parenchyma, while, the Weibull distribution is the best choice to model the envelope statistics of fat and PBS. These results will contribute to the development of more-accurate and automatic 3D segmentation of LNs for ultrasonic detection of clinically significant LN metastases.
Rebollar, Eria A.; Antwis, Rachael E.; Becker, Matthew H.; Belden, Lisa K.; Bletz, Molly C.; Brucker, Robert M.; Harrison, Xavier A.; Hughey, Myra C.; Kueneman, Jordan G.; Loudon, Andrew H.; McKenzie, Valerie; Medina, Daniel; Minbiole, Kevin P. C.; Rollins-Smith, Louise A.; Walke, Jenifer B.; Weiss, Sophie; Woodhams, Douglas C.; Harris, Reid N.
2016-01-01
Emerging infectious diseases in wildlife are responsible for massive population declines. In amphibians, chytridiomycosis caused by Batrachochytrium dendrobatidis, Bd, has severely affected many amphibian populations and species around the world. One promising management strategy is probiotic bioaugmentation of antifungal bacteria on amphibian skin. In vivo experimental trials using bioaugmentation strategies have had mixed results, and therefore a more informed strategy is needed to select successful probiotic candidates. Metagenomic, transcriptomic, and metabolomic methods, colloquially called “omics,” are approaches that can better inform probiotic selection and optimize selection protocols. The integration of multiple omic data using bioinformatic and statistical tools and in silico models that link bacterial community structure with bacterial defensive function can allow the identification of species involved in pathogen inhibition. We recommend using 16S rRNA gene amplicon sequencing and methods such as indicator species analysis, the Kolmogorov–Smirnov Measure, and co-occurrence networks to identify bacteria that are associated with pathogen resistance in field surveys and experimental trials. In addition to 16S amplicon sequencing, we recommend approaches that give insight into symbiont function such as shotgun metagenomics, metatranscriptomics, or metabolomics to maximize the probability of finding effective probiotic candidates, which can then be isolated in culture and tested in persistence and clinical trials. An effective mitigation strategy to ameliorate chytridiomycosis and other emerging infectious diseases is necessary; the advancement of omic methods and the integration of multiple omic data provide a promising avenue toward conservation of imperiled species. PMID:26870025
Shahbazian, Nahid; Jafari, Razieh Mohammad; Haghnia, Sahar
2016-10-01
Increased plasma homocysteine may be associated with adverse pregnancy outcomes, such as preeclampsia. The aim of this study was to determine the plasma homocysteine, serum folate, and vitamin B12 levels in preeclamptic pregnant women. This case-control study was conducted in 2016 in Ahwaz on 51 pregnant women with preeclampsia and 51 healthy pregnant women of the same gestational age, who served as controls. The case group also was subdivided into severe and non-severe preeclampsia. Patients' data were collected through a questionnaire and medical records. Serum homocysteine, folic acid, and vitamin B12 were analyzed using chemiluminescent assay. The results were compared between two groups. Statistical analyses were done using IBM-SPSS 20.0. A Kolmogorov-Smirnov test, independent samples t-test, Mann-Whitney test, and Chi-square test were used for data analysis. No different demographic characteristics were found among the groups. Pregnant women complicated with preeclampsia displayed significantly higher serum homocysteine levels (p vitamin B12 levels (p vitamin B12, but it was not statistically significant (p = 0.160; r = -0.200). Significant differences occurred in serum homocysteine and folate levels between the severe and non-severe subgroups (p vitamin B12. Further studies are needed to confirm if the prescription of folic acid and vitamin B12 in women with a deficiency of these vitamins could decrease the level of serum homocysteine and, therefore, reduce the risk of preeclampsia or, if it occurred, its severity.
Mehdi Moradi
2012-06-01
Full Text Available The purpose of present study was to examine the relationship between emotional intelligence and job satisfaction among coaches in premier Under-20 football league. The research method was descriptive-correlative, the performance method was survey, and data collection was done through field study. Research population consisted of 56 coaching staff in 14 teams participating in premier Under-20 football league. Finally, there were 48 questionnaires useable in data analysis. Emotional Intelligence Questionnaire (Syber Yashring and JDI (Wysocki & Kromm were used to collect the data. Descriptive statistics was used to describe data, Kolmogorov-Smirnov test was used to know whether the distribution of data was normal, and Pearson correlation and stepwise regression were applied to investigate the significance of hypotheses. Results showed that there was significant association between emotional intelligence, subscale self-awareness, subscale empathy, and subscale social skills with job satisfaction (p≤0.05. However, there was not significant association between subscale self-motivation and subscale self-control with job satisfaction. Self-awareness, empathy, and social skills (predictors predicted job satisfaction (criterion significantly. Predicted value of self-awareness, empathy, and social skills was 0.4, 0.29, and 0.26 respectively. Training and aging increase emotional intelligence so it is predicted more job satisfaction over the time. From other side, clubs and football federation as the head can create scientific atmosphere and instruct psychological coaching principles. It will lead to enjoy creative, willing players as output.
X-ray flux variability of active galactic nuclei observed using NuSTAR
Rani, Priyanka; Stalin, C. S.; Rakshit, Suvendu
2017-04-01
We present results of a systematic study of flux variability on hourly time-scales in a large sample of active galactic nuclei (AGN) in the 3-79 keV band using data from Nuclear Spectroscopic Telescope Array. Our sample consists of four BL Lac objects (BL Lacs), three flat spectrum radio quasars (FSRQs) 24 Seyfert 1, 42 Seyfert 2 and eight narrow line Seyfert 1 (NLSy1) galaxies. We find that in the 3-79 keV band, about 65 per cent of the sources in our sample show significant variations on hourly time-scales. Using the Mann-Whitney U-test and the Kolmogorov-Smirnov test, we find no difference in the variability behaviour between Seyfert 1 and 2 galaxies. The blazar sources (FSRQs and BL Lacs) in our sample are more variable than Seyfert galaxies that include Seyfert 1 and Seyfert 2 in the soft (3-10 keV), hard (10-79 keV) and total (3-79 keV) bands. NLSy1 galaxies show the highest duty cycle of variability (87 per cent), followed by BL Lacs (82 per cent), Seyfert galaxies (56 per cent) and FSRQs (23 per cent). We obtained flux doubling/halving time in the hard X-ray band less than 10 min in 11 sources. The flux variations between the hard and soft bands in all the sources in our sample are consistent with zero lag.
Mohammad Reza Dalvi
2013-11-01
Full Text Available The present paper, titled ‘A Study of the Effects of Internal Marketing on Customer-oriented Prosocial Behaviors’ investigates the important role of internal marketing on job satisfaction, organizational commitment and, finally, role-prescribed customer service and extra-role customer service (prosocial behavior among hotel employees in Isfahan city. A main hypothesis (speculating the significant effect of internal marketing on customer-oriented prosocial behavior and eleven sub-hypotheses (speculating the significant effect of empowerment, service training and service reward on organizational commitment and job satisfaction as well as speculating the significant effect of organizational commitment and job satisfaction on role-prescribed customer service and extra-role customer service (prosocial behavior, are presented. This research, in terms of its purpose, is an applied one; and in terms of implementation method, is a survey with a correlation approach. The population includes 140 experienced managers, vice-presidents and employees of the hotels in Isfahan city. The data were collected using questionnaires with a Cronbach's alpha coefficient calculated as 0.91, which includes personal data and main, specialized questions for examination of research hypotheses. From 155 distributed questionnaires, 140 (90% were returned. The collected data were analyzed using SPSS and AMOS software programs through statistical tests at descriptive (frequency, percentage, accumulated percentage, average and standard deviation and inferential (t-test, regression modeling, variance analysis, non- parametric Kolmogorov and Smirnov test, and Freedman non-parametric test levels. The findings supported all research hypotheses.
Intermittency and velocity fluctuations in hopper flows prone to clogging
Thomas, C. C.; Durian, D. J.
2016-08-01
We study experimentally the dynamics of granular media in a discharging hopper. In such flows, there often appears to be a critical outlet size Dc such that the flow never clogs for D >Dc . We report on the time-averaged velocity distributions, as well as temporal intermittency in the ensemble-averaged velocity of grains in a viewing window, for both D Dc , near and far from the outlet. We characterize the velocity distributions by the standard deviation and the skewness of the distribution of vertical velocities. We propose a measure for intermittency based on the two-sample Kolmogorov-Smirnov DKS statistic for the velocity distributions as a function of time. We find that there is no discontinuity or kink in these various measures as a function of hole size. This result supports the proposition that there is no well-defined Dc and that clogging is always possible. Furthermore, the intermittency time scale of the flow is set by the speed of the grains at the hopper exit. This latter finding is consistent with a model of clogging as the independent sampling for stable configurations at the exit with a rate set by the exiting grain speed [C. C. Thomas and D. J. Durian, Phys. Rev. Lett. 114, 178001 (2015), 10.1103/PhysRevLett.114.178001].
Investigating the Role of Sport Media in Developing Championship Sport
Salah Naghshbandi
2012-01-01
Full Text Available The purpose of this research was to investigate the role of sport media in developing championship sport. It was applied, descriptive - comparative research. Population composed of media experts, sport experts, and national athletes. There were 150 people as sample selected by convenience sampling. It was a researcher -made questionnaire. University professors confirmed the validity and reliability was desirable (Cronbach α = 0.88. Individual characteristics, normality of data distribution, and significance of hypotheses were measured by descriptive statistics, Kolmogorov-Smirnov test, and Wilcoxon test respectively. Results showed that there was a significant difference between real condition and ideal condition of sport media role to develop components of championship sport (p _0.05. Values were Z = – 8.645 for media experts, Z = – 8.664 for sport experts, and Z = – 8.652 for athletes. It seems that main reason of difference between real condition and ideal condition based on participants’ attitudes is not to have comprehensive sport media programs or suitable knowledge of media experts about different dimensions of championship sport.
Transient beam-loading model and compensation in Compact Linear Collider main linac
Kononenko, O
2011-01-01
A new model to compensate for the transient beam loading in the CLIC main linac is developed. It takes into account the CLIC specific power generation scheme and the exact 3D geometry of the accelerating structure including couplers. A new method of calculating unloaded and loaded voltages during the transient is proposed and a dedicated optimization scheme of the rf pulse to compensate the transient beam-loading effect is presented. It is demonstrated that the 0.03% limit on the rms relative bunch-to-bunch energy spread in the main beam after acceleration can be reached. The optimization technique has been used to increase the rf to beam efficiency while preserving the CLIC requirements and to compensate for the energy spread caused by the Balakin-Novokhatski-Smirnov damping and transient process in the subharmonic buncher. Effects of charge jitters in the drive and main beams are studied. It is shown that within the 0.1% CLIC specification limit on the rms spread in beams charge the energy spread is not sig...
Time stretching of the GeV emission of GRBs: Fermi-LAT data vs geometrical model
Piskunov, Maxim S
2014-01-01
It is known that the high energy $(> 100\\,\\text{MeV})$ emission of gamma-ray bursts is delayed with respect to the low energy emission. However, the dependence of light curves on energy has not been studied for the high energy bands. In this paper we consider the bursts observed by Fermi LAT from 2008 August 4 to 2011 August 1, for which at least $10$ photons were observed with the energy greater than $1\\,\\text{GeV}$. These include $4$ bursts: GRB 080916C, GRB 090510, GRB 090902B, and GRB 090926A. We use the Kolmogorov-Smirnov test to compare the light curves in the two bands, $100\\,\\text{MeV} 1\\,\\text{GeV}$. For GRB 080916C and GRB 090510 the light curves in the two bands are statistically compatible. However, for GRB 090926A, the higher-energy light curve is stretched compared to the lower-energy one with a statistical significance of $3.3 \\sigma$ and, for GRB 090902B, on the contrary, the lower-energy curve is stretched with $2.3 \\sigma$ significance. We argue that the observed diversity of stretching fac...
Relationship between social participation and general health among the elderly
Abbasali Yazdani
2015-01-01
Full Text Available Background: Health promoting behaviors in the elderly can potentially improve their health and reduce health care costs. This study was aimed to investigate the relationship of social participation with general health among the elderly people. Methods: The research population in this correlational study included all elderly people (aged 60 and older in district 5 of Tehran. A total of 80 persons were selected by convenience sampling method. In order to collect data, a researcher-made social participation questionnaire and the General Health Questionnaire (GHQ-28 were used. Kolmogorov–Smirnov test, Pearson and Spearman correlation coefficient, U-Mann-Whitney test and simple linear regression were applied to analyze the data. Results: The findings showed no statistically significant correlation between social participation and general health and its dimensions (P>0.05. Among demographic variables, only age was negatively correlated with social participation (P<0/05. Conclusions: Absence of relationship between social participation and health may be attributed to the effect of peripheral factors like social, economical and political situation during which the research was performed. A similar study in a more stable time or other places may contribute to the generalizability of the findings.
Sepideh Bakhtiari
2014-09-01
Full Text Available Introduction: Outcome expectation is considered as a basic and significant variable in education. It is a cognitive-motivational component that takes the individual into account as an active and sensible decision-maker. The present study was conducted to investigate the correlation of outcome expectations with academic performance of students of nursing and midwifery in Kermanshah University of Medical Sciences. Methods: In this descriptive cross-sectional study, the sample size included 218 nursing and midwifery students selected through convenient random sampling method. The instrument for data collection was the questionnaire of “outcome expectations of career decision-making and discovery targets”, which comprised of 13 questions in three domains of future orientation, job satisfaction and personal expectations. The questionnaires were coded after being completed and the obtained data were fed into SPSS-16 software and analyzed by descriptive statistics, t-test, Kolmogrov-Smirnov, ANOVA and Mann-Whitney tests. Results: The findings indicated no statistically significant difference between place of living (dormitory or home and outcome expectations along with its domains (39.4% and 60-6%. However, a significant correlation was reported between discipline, gender, admittance year and academic performance of the students (p0.05. Conclusion: The findings of this study indicated a positively positive significant relationship between students’ academic performance and outcome expectations along with its domains.
Diversity in Retail: Impacts of Accessibility and Inclusion in Purchase Intent
Marina Dias Faria
2013-09-01
Full Text Available This study aims to evaluate the effect of a store’s accessibility and the inclusion of employees with disabilities on the attempt to purchase by non-disabled consumers in a retail environment. A methodological strategy was used during the empirical phase of the research, whereby it was possible to simulate the real situations to allow adjustment of the six experimental factors that the research hypotheses established. Data collection was based on a questionnaire administered to 267 subjects, and to treat the data, graphical analysis, evaluation of outliers, the Kolmogorov-Smirnov test, and the nonparametric Mann-Whitney U procedures were performed. The results suggest that the consumers have little willingness to be served by deficient handicapped persons in situations of retail purchase, and these consumers do not seem to value an accessible environment.
Anisotropy in the all-sky distribution of galaxy morphological types
Javanmardi, Behnam
2016-01-01
We present the first study of the isotropy of the distribution of morphological types of galaxies in the Local Universe out to around 200 Mpc using more than 60,000 galaxies from the HyperLeda database. We divide the sky into two opposite hemispheres and compare the abundance distribution of the morphological types, $T$, using the Kolmogorov-Smirnov (KS) test. This is repeated for different directions in the sky and the KS statistic as a function of sky coordinates is obtained. For three samples of galaxies within around 100, 150, and 200 Mpc, we find a significant hemispherical asymmetry with a vanishingly small chance of occurring in an isotropic distribution. Astonishingly, regardless of this extreme significance, the hemispherical asymmetry is aligned with the Celestial Equator at the 97.1-99.8% and with the Ecliptic at the 94.6-97.6% confidence levels, estimated using a Monte Carlo analysis. Shifting $T$ values randomly within their uncertainties has a negligible effect on this result. When a magnitude l...
Confocal microscope is able to detect calcium metabolic in neuronal infection by toxoplasma gondii
Sensusiati, A. D.; Priya, T. K. S.; Dachlan, Y. P.
2017-05-01
Calcium metabolism plays a very important role in neurons infected by Toxoplasma. Detection of change of calcium metabolism of neuron infected by Toxoplasma and Toxoplasma requires the calculation both quantitative and qualitative method. Confocal microscope has the ability to capture the wave of the fluorescent emission of the fluorescent dyes used in the measurement of cell calcium. The purpose of this study was to prove the difference in calcium changes between infected and uninfected neurons using confocal microscopy. Neuronal culture of human-skin-derived neural stem cell were divided into 6 groups, consisting 3 uninfected groups and 3 infected groups. Among the 3 groups were 2 hours, 24 hours and 48 hours. The neuron Toxoplasma gondii ratio was 1:5. Observation of intracellular calcium of neuron and tachyzoite, evidence of necrosis, apoptosis and the expression of Hsp 70 of neuron were examined by confocal microscope. The normality of the data was analysed by Kolmogorov-Smirnov Test, differentiation test was checked by t2 Test, and ANOVAs, for correlation test was done by Pearson Correlation Test. The calcium intensity of cytosolic neuron and T. gondii was significantly different from control groups (p<0.05). There was also significant correlation between calcium intensity with the evidence of necrosis and Hsp70 expression at 2 hours after infection. Apoptosis and necrosis were simultaneously shown with calcium contribution in this study. Confocal microscopy can be used to measure calcium changes in infected and uninfected neurons both in quantitatively and qualitatively.
Ahmad Vadadi
2016-06-01
Full Text Available Enterprise resource planning (ERP is a management solution based on information technology that the aim of which was to the integrity and flow of information between all parts of the organization, including financial, production, warehouse, human resources, supply chain and customer management, which makes possible to facilitate planning and timely and quick response to customers. Thus, the present study has been developed to evaluate success vital factors in the implementation of the enterprise resource planning (ERP in commercial firms (companies of Mazandaran province. The research method was descriptive survey and taken to form field. The research population is all managers, experts and specialists in information technology systems and system integration in export businesses firms of Mazandaran province (n= 250, based on the Cochran formula, 151 subjects were selected as samples. Finally, 132 questionnaires were received. For evaluation vital factors affecting in the implementation of ERP was used research made questionnaires. To test the hypotheses, we used of the Kolmogorov-Smirnov test and Friedman test in the SPSS software. The results showed that all the internet and networks variables in technical factors and expertise resource in human resources factors, senior managementin operational factors, and organizational culture in organizational factors, are the first priority.
Flow cytometric detection of anti-gliadin antibodies.
Presani, G; Perticarari, S; Mangiarotti, M A
1989-05-12
A very sensitive solid-phase fluorescent immunoassay to detect anti-alpha-gliadin IgA class antibodies is described. The solid phase consisted of polystyrene carboxylated microspheres, of 5 microns diameter, coated with alpha-gliadin. Serum-specific antibodies bound to the alpha-gliadin were measured by flow cytometry using fluorescein-conjugated anti-human IgA. 41 samples were tested and the results compared with those obtained by a standard method: an enzyme-linked immunosorbent assay (ELISA). A good correlation was found between the two techniques (r = 0.96). The sera of untreated coeliac children showed significantly higher antibody values than the sera of children on a gluten-free diet or healthy control groups. The flow cytometric method was more sensitive when the Kolgomorov/Smirnov test was used to analyse the histograms. This method provides an alternative screening test for coeliac disease and may also be used to confirm borderline results obtained in the ELISA test.
Barbieri, Riccardo; Matten, Eric C; Alabi, Abdulrasheed A; Brown, Emery N
2005-01-01
Heart rate is a vital sign, whereas heart rate variability is an important quantitative measure of cardiovascular regulation by the autonomic nervous system. Although the design of algorithms to compute heart rate and assess heart rate variability is an active area of research, none of the approaches considers the natural point-process structure of human heartbeats, and none gives instantaneous estimates of heart rate variability. We model the stochastic structure of heartbeat intervals as a history-dependent inverse Gaussian process and derive from it an explicit probability density that gives new definitions of heart rate and heart rate variability: instantaneous R-R interval and heart rate standard deviations. We estimate the time-varying parameters of the inverse Gaussian model by local maximum likelihood and assess model goodness-of-fit by Kolmogorov-Smirnov tests based on the time-rescaling theorem. We illustrate our new definitions in an analysis of human heartbeat intervals from 10 healthy subjects undergoing a tilt-table experiment. Although several studies have identified deterministic, nonlinear dynamical features in human heartbeat intervals, our analysis shows that a highly accurate description of these series at rest and in extreme physiological conditions may be given by an elementary, physiologically based, stochastic model.
Annisa Isfandiary Ismandiya
2015-08-01
Full Text Available Hypotension is the most common complication in spinal anesthesia during cesarean sections. One of the prevention efforts includes administering a fluid vasopressor or placing a wedge under the right hip for left uterine displacement. This study aimed to determine the effect of ondansetron 8 mg, 5 minutes before spinal anesthesia, to maintain maternal hemodynamic stability. This double-blind randomized control experimental study was conducted in Dr. Hasan Sadikin General Hospital Bandung during the period of January to March 2014 on 46 pregnant women, American Society of Anesthesiologist (ASA II, who underwent cesarean section with spinal anesthesia. After randomization, the subjects were grouped into two groups: 23 subjects were included in the control group receiving Nacl 0.9% and 23 subjects were included in the ondansetron group receiving 8 mg of ondansetro. Blood pressure and pulse rate were examined every minute until 15 minutes after spinal anesthesia and then every 3 minutes until the operation was complete. Data were analyzed statistically using t test, Mann Whitney Test, and Kolmogorov-Smirnov Test. The results show that there were significant differences in systol presure, average blood pressure, and use of ephedrine between the control and ondansetron group (p<0.05. In conclusion, the provision of 8 mg ondansetron can prevent hypotension and reduce ephedrine use after spinal anesthesia in caesarean section.
The Relationship between Mental Skills, Motivation and Personality of School Football Player
Amin Rayat
2016-06-01
Full Text Available The aim of this study was to determine the relationship between personality and motivation in school football players Marvdasht city. The research method was a descriptive correlational research was conducted as a field. The population of the city school football players was evaluated. Because of the nature of the sampling population of the entire population was used. The samples were selected in two age groups of adolescents and youth. The data of this study from two questionnaires Exercise Motivation (SMS Sports Personality Questionnaire (SPQ-20 was used. Data were collected by questionnaire and statistical analysis was performed using SPSS software. Face and content validity of the questionnaire was confirmed by experts and its reliability by using Cronbach's alpha, respectively, sporty character (72/0, sports motivation (vary from 850 was approved. Kolmogorov-Smirnov test results, the normal distribution of variables not the case. So in order to analyze the data, descriptive and inferential statistics including Spearman correlation coefficient, Mann-Whitney U and regression were used. Test results showed that the average person in the group was a young teenager and the youth group of the teens showed more motivation. The results showed that no significant relationship between motivation and personality, but there was a significant relationship between personality traits and motivation.
Hamidreza Naserpour
2015-09-01
Full Text Available Objective: The aim of this study was to investigate the effect of eight weeks of high intensive exercise on selected biomechanical and anthropometrical variables in elite wrestlers. Methods: Sixteen young wrestlers (age 19.1±1 years and weight 74.9±17.3 kg attending the national Greco-Roman camps participated in this study. Biomechanical and anthropometrical variables included weight, body fat percentage, body mass index, balance, general body speed and acceleration, active range of motion of the joints, upper and lower extremities power and hand grip strength. These variables were measured before and after 8 weeks (67 sessions of special exercise training. The normality of data was checked by Kolmogorov- Smirnov normality measure and data were analyzed with Paired- samples t-test to compare variables before and after training program, with a significance level of (P≤0.05. Results: Results showed that there were significant differences between weight, body fat percentage, body mass index, semi-dynamic balance in the medial and anterior-medial directions, upper extremities power, the range of lateral flexion to the right of the neck and hip flexion of pre and post-test. Conclusion: Based on the results, it seems that applied training program had main effect on biomechanical and anthropometrical variables such as weight, body fat percentage, body mass index, power, balance and active range of motion of elite wrestlers that will increase the qualitative athletic performance
High perveance electron gun for the electron cooling system
Korotaev, Yu V; Petrov, A; Sidorin, A; Smirnov, A; Syresin, E M; Titkova, I
2000-01-01
The cooling time in the electron cooling system is inversely proportional to the beam current. To obtain high current of the electron beam the control electrode of the gun is provided with a positive potential and an electrostatic trap for secondary electrons appears inside the electron gun. This leads to a decrease in the gun perveance. To avoid this problem, the adiabatic high perveance electron gun with the clearing control electrode is designed in JINR (J. Bosser, Y. Korotaev, I. Meshkov, E. Syresin et al., Nucl. Instr. and Meth. A 391 (1996) 103. Yu. Korotaev, I. Meshkov, A. Sidorin, A. Smirnov, E. Syresin, The generation of electron beams with perveance of 3-6 mu A/V sup 3 sup / sup 2 , Proceedings of SCHEF'99). The clearing control electrode has a transverse electric field, which clears secondary electrons. Computer simulations of the potential map were made with RELAX3D computer code (C.J. Kost, F.W. Jones, RELAX3D User's Guide and References Manual).
The effect of education of health-promoting behaviors on lifestyle in hemodialysis patients
Seyed Reza Borzou
2016-06-01
Full Text Available Today improve lifestyle and health promotion is a basic requirement for human society and the need for more tangible factor in the increase in chronic diseases such as chronic kidney disease and hemodialysis process is followed. As life expectancy increases, due to the importance of promoting behavior change. The aim of this study was to evaluate the effect of health promoting behaviors was on the lifestyle of patients undergoing hemodialysis. In this study, 70 patients undergoing hemodialysis training centers - medical Hamadan were selected. That is because Hamedan only two dialysis centers, randomly one of them was selected as a test group and a control group. Of the patients referred to the center for sampling in each group 35 patients were studied. For groups of six 30-minute sessions on an individual basis during hemodialysis, held over three weeks in a row. Data analysis using descriptive statistics and statistical tests of Kolmogorov - Smirnov, T and T were analyzed with SPSS version 16. In the experimental group, health-promoting lifestyle scores before and after intervention showed significant statistical differences (001 / 0 < p. The mean scores of health-promoting lifestyle intervention and control groups after the intervention, there was a significant difference (p<0.05. Teaching with an emphasis on health-promoting behaviors, hemodialysis patients was improved lifestyle. Develop and implement training programs to improve lifestyle behaviors and health promoting effective step is hemodialysis patients.
Model independent determination of the solar neutrino spectrum with and without MSW
Hata, N; Hata, Naoya; Langacker, Paul
1995-01-01
Besides the opportunity for discovering new neutrino physics, solar neutrino measurements provide a sensitive probe of the solar interior, and thus a rigorous test of solar model predictions. We present model independent determinations of the neutrino spectrum by using relevant flux components as free parameters subject only to the luminosity constraint. (1) Without the Mikheyev-Smirnov-Wolfenstein (MSW) effect, the best fit for the combined data is poor. Furthermore, the data indicate a severe suppression of the ^7Be flux relative to the ^8B, contradicting both standard and nonstandard solar models in general; the pp flux takes its maximum value allowed by the luminosity constraint. This pathology consistently appears even if we ignore any one of the three data. (2) In the presence of the two-flavor MSW effect, the current constraint on the initial ^8B flux is weak, but consistent with the SSM and sufficient to exclude nonstandard models with small ^8B fluxes. No meaningful constraint is obtained for the oth...
Paulo Santana Pacheco
2014-02-01
Full Text Available The objective of this study was to evaluate the risk associated with finishing crossbred Charolais × Nellore steers in feedlot at different slaughter weights (425, 467 or 510 kg, considering or disregarding the correlation amongst random input variables. Data were collected from 2004 to 2010 and used in the simulation of the financial indicator Net Present Value (NPV. Animals slaughtered with 425, 467 or 510 kg were fed diets containing a roughage:concentrate ratio of 60:40 for 30, 65 and 94 days, respectively. In the simulation of NPV, a Latin Hypercube type of sampling was used, running 2000 interactions. An analysis of stochastic dominance of first and second orders was carried out as well as the Kolmogorov-Smirnov asymptotic test (to check for differences between pairs of curves of cumulative distributions, followed by sensitivity analysis using stepwise multivariate regression. Simulations of NPV considering the correlation amongst the input variables produced more consistent estimates of this financial indicator than simulations that disregarded it. The risk analysis showed that 467 kg slaughter weight presented the lowest risk for finishing cattle in feedlots when compared with 425 and 510 kg. The most important variables influencing the NVP are the prices of feeder and finished steers, initial and final weights, concentrate and roughage costs, and minimum rate of attractiveness; therefore, farmers should pay particular attention to these variables when making the decision of whether or not to use feedlot to finish beef cattle.