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126 articles for “multivariate”

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Research ArticleOpen accessIn the abstractInversion of Covariance Matrix for High Dimension DataSamruam ChongcharoenProblem statement: In the testing statistic problem for the mean vector of independent and identically distributed multivariate normal random vectors with unknown covariance matrix when the data has sample size less than the dimension n≤p, for example, the data came from DNA microarrays where a large number of gene expression levels are measured on relatively few subjects, the p×p sample … …Journal of Mathematics and Statistics, Vol. 7, Issue 3 · 27 Jul 2011 · 7,869 accessesView PDFCite
Research ArticleOpen accessIn the abstractRelationships Between Background Factors and Female Marital SatisfactionAsghar Mirfardi, Ali Edalati, Ma'rof RedzuanProblem statement: In spite of the importance of marital satisfaction in couple relation, there is a little research in the Iranian context that examined the relationship between background factors and marital satisfaction. Thus, this study examined the relationship between duration of marriage, number of children, years of education and family income with female marital satisfaction. Approach: The study was carried … …Journal of Social Sciences, Vol. 6, Issue 3 · 30 Sep 2010 · 8,166 accessesView PDFCite
Research ArticleOpen accessIn the abstractTime Series Analysis of Rainfall and Temperature Interactions in Coastal CatchmentsGurudeo Anand Tularam, Mahbub IlaheeProblem statement: As a result of climate change more work is now being done on climate indices such as SOI, rainfall, temperature and so on. The research concerning rainfall and temperature variations in coastal tropical and subtropical catchments as noted by the dated references in this study shows a lack of attention. The authors examined long term data from coastal … …Journal of Mathematics and Statistics, Vol. 6, Issue 3 · 30 Sep 2010 · 15,823 accessesView PDFCite
Research ArticleOpen accessIn the abstractInterpolating Operators for MultiapproximationEman Samir BhayaProblem statement: There are no simple definitions of operators for best multiapproximation and best one sided multiapproximation which work for any measurable function in Lp for, p>0. This study investigated operators that are good for best multiapproximation and best one sided multiapproximation. Approach: We first introduced some direct results related to the approximation problem of continuous functions by Hermit-Fejer interpolation … …Journal of Mathematics and Statistics, Vol. 6, Issue 3 · 30 Sep 2010 · 7,654 accessesView PDFCite
Research ArticleOpen accessIn the abstractVegetation Analysis of Sutan-Chay Basin in ArasbaranT. Ebrahimi Gajoti, V. Haciyev, A. Javanshir et al.Problem statement: Plants associations differ in relation to environmental gradients. Therefore, it is necessary to study the interaction between ecological factors and vegetation. Approach: In this study vegetation and flora of Sutan-Chay Basin in Arasbaran was investigated using Braun Blanquet method as physiognomic floristic. Sampling of soil and vegetation was carried out by selecting areas with homogenous plant compositions. The … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 3 · 30 Sep 2010 · 7,879 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Tabu Search Method for Finding Minimal Multi-Homogeneous Bézout NumberHassan M.S. Bawazir, Ali Abd RahmanProblem statement: A homotopy method has proven to be reliable for computing all of the isolated solutions of a multivariate polynomial system. The multi-homogeneous Bézout number of a polynomial system is the number of paths that one has to trace in order to compute all of its isolated solutions. Each partition of the variables corresponds to a multi-homogeneous Bézout number. … …Journal of Mathematics and Statistics, Vol. 6, Issue 2 · 30 Jun 2010 · 7,293 accessesView PDFCite
Research ArticleOpen accessIn the abstractCardiovascular Disease Risk Factors among Adult Australian-Lebanese in MelbourneLina Shahwan-AklThis descriptive exploratory study reports on the prevalence of Cardiovascular Disease (CVD) risk factors among adult Australian-Lebanese migrants living in Melbourne. This study fills a gap in extant research regarding CVD risk factors within this ethnic community in Melbourne. Problem statement: Australia’s multicultural society consists of more than 200 ethnic groups and nearly a quarter of the Australian population are … …International Journal of Research in Nursing, Vol. 1, Issue 1 · 30 Jun 2010 · 15,011 accessesView PDFCite
Research ArticleOpen accessIn the abstractFamily Values and Female's Psychological AggressionAli Edalati, Ma'rof Redzuan, Mariani Mansor, Mansor Abu TalibProblem statement: The main objective of the current study is to determine the relationship between women’s perceptions toward Iranian family values with psychological aggression. Approach: All of the randomly selected 337 wives who suffered from level of psychological aggression were included in this study. Straus questionnaire (CTS) is the method used to measure psychological aggression. It shows a negative relationship … …Journal of Social Sciences, Vol. 6, Issue 1 · 31 Mar 2010 · 8,352 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Numerical Computation of Rational Structures and Asymptotic Standard Deviations in Causal Time Series DataConcepción González-Concepción, María Candelaria Gil-Fariña, Celina Pestano-GabinoProblem statement: The specific properties of data series are of primary importance in several sciences. In the field of time series analysis, several researchers have considered the rational approximation theory, particularly the Padé Approximation and Orthogonal Polynomials. Approach: In this study, an approach for the statistical significance of two numerical methods, the r-s and q-d algorithm, was proposed which made … …Journal of Mathematics and Statistics, Vol. 5, Issue 3 · 30 Sep 2009 · 7,049 accessesView PDFCite
Research ArticleOpen accessIn the abstractMortality among HIV-Infected Patients in Resource Limited Settings: A Case Controlled Analysis of Inpatients at a Community Care CenterNirmala Rajagopalan, Joyce B. Suchitra, Anita Shet et al.Problem statement: Despite massive national efforts to scale up Antiretroviral Therapy (ART) access in India since 2004, the AIDS death rate was 17.2 per 100,000 persons during 2003-2005. In the era of HAART in resource poor settings, it is imperative to understand and address the causes of AIDS related mortality. This collaborative study aimed at defining the predictors of mortality … …American Journal of Infectious Diseases, Vol. 5, Issue 3 · 30 Sep 2009 · 7,661 accessesView PDFCite