Search Results
 Results 551 - 600 of 5173 < 7 8 9 10 11 12 13 14 15 16 17 > 551 Hsu Jesse Y JY Department of Statistics, The Wharton School, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, - - 2013 In medical sciences, statistical analyses based on observational studies are common phenomena. One peril of drawing inferences about the effect of a treatment on subjects using observational studies is the lack of randomized assignment of subjects to the treatment. After adjusting for measured pretreatment covariates, perhaps by matching, a sensitivity ... 552 Balint Lajos - - 2013 In the last century Hungary had astonishingly high suicide rates characterized by marked regional within-country inequalities, a spatial pattern which has been quite stable over time. To explain the above phenomenon at the level of micro-regions (n=175) in the period between 2005 and 2011. Our dependent variable was the age ... 553 de Cuyper Ruben - - 2013 This study examines inmates' core discussion network prior to their incarceration. The core discussion network consists of the immediate social circle of relatively strong ties. The aims of the study are twofold: (1) to describe inmates' core discussion network prior to their incarceration in terms of network structure, relationship quality ... 554 Pienaar Elizabeth F - - 2013 General environmental attitudes are often measured with questions added to surveys about specific environmental or non-environmental issues. Using results from a large-scale national survey on the protection of threatened and endangered marine species, we examine whether the context of the survey in which New Ecological Paradigm (NEP) Scale items are ... 555 Gibert Jean P - - 2013 Abstract A current challenge in evolutionary ecology is to assess how the spatial structure of interacting species shapes coevolution. Previous work on the geographic mosaic of coevolution has shown that coevolution depends on the spatial structure, the strength of selection, and gene flow across populations. We used spatial subgraphs and ... 556 Sheinbaum Tamara - - 2013 Background: Previous studies have provided mixed evidence in support of the structure of Bartholomew's attachment framework. The current study examined the comparability of the correlations among the attachment prototypes as well as the underlying factor structure of the Relationship Questionnaire in independent samples of Spanish and American young adults. Method: ... 557 Cuenca Montesino María L - - 2013 Background: This study analyzed the psychometric properties of the Dyadic Adjustment Scale (DAS). Method: A sample of 1,180 participants, 590 adult heterosexual couples, from the Community of Madrid was examined via confirmatory factor analysis. Results: The results indicate that the factor structure of this scale fits the hierarchical factor model ... 558 Fine Cordelia - - 2013 Why is popular understanding of female-male differences still based on rigid models of development, even though contemporary developmental sciences emphasize plasticity? Is it because the science of sex differences still works from the same rigid models? 559 Van Kleef Richard C - - 2013 The Netherlands relies on risk equalization to compensate competing health insurers for predictable variation in individual medical expenses. Without accurate risk equalization insurers are confronted with incentives for risk selection. The goal of this study is to evaluate the improvement in predictive accuracy of the Dutch risk equalization model since ... 560 Alberink Ivo - - 2013 In recent studies, the evidential value of the similarity of minutiae configurations of fingermarks and fingerprints, for example expressed by automated fingerprint identification systems (AFIS), is determined by likelihood ratios (LRs). The paper explores whether there is an effect on LRs if conditioning takes place on specified fingers, fingerprints, or ... 561 Wen Ping - - 2013 With economic and cultural globalization, the trend of globalization of higher education becomes inevitable. Using the concept of competitiveness, the authors established a principal component analysis (PCA) model to examine disciplinary competitiveness in stomatology of various higher education institutions worldwide. A total of forty-four universities entered the final list according ... 562 Fleming Patricia A - - 2013 Abstract Caudal autotomy is a common defense mechanism in lizards, where the animal may lose part or all of its tail to escape entrapment. Lizards show an immense variety in the degree of investment in a tail (i.e., length) across species, with tails of some species up to three or ... 563 Schlesinger Torsten - - 2013 Abstract This article analyses the conditions influencing volunteering in sports clubs. It focuses not only on individual characteristics of volunteers but also on the corresponding structural conditions of sports clubs. It proposes a model of voluntary work in sports clubs based on economic behaviour theory. The influences of both the ... 564 Wardrop Nicola A - - 2013 Scrub typhus is transmitted by the larval stage of trombiculid mites. Environmental factors, including land cover and land use, are known to influence breeding and survival of trombiculid mites and, thus, also the spatial heterogeneity of scrub typhus risk. Here, a spatially autoregressive modelling framework was applied to scrub typhus ... 565 Thanapongtharm Weerapong - - 2013 Thailand experienced several epidemic waves of the highly pathogenic avian influenza (HPAI) H5N1 between 2004 and 2005. This study investigated the role of water in the landscape, which has not been previously assessed because of a lack of high-resolution information on the distribution of flooded land at the time of ... 566 Stanton Michelle C - - 2013 Lymphatic filariasis (LF) is a parasitic disease that is endemic throughout sub-Saharan Africa, infecting approximately 40 million people. In Burkina Faso, mass drug administration (MDA) for LF with ivermectin and albendazole has been ongoing since 2001, and by 2006 all endemic health districts were receiving MDA with a therapeutic coverage ... 567 Hu Yi - - 2013 When modelling prevalence data, epidemiological studies usually employ either Gaussian, binomial or Poisson models. However, reasons are seldom given in the literature why the chosen model was felt to be the most appropriate. In this study, we compared all three models for fitting schistosomiasis risk in Xingzi county, Jiangxi province, ... 568 Nadachowska-Brzyska Krystyna - - 2013 Profound knowledge of demographic history is a prerequisite for the understanding and inference of processes involved in the evolution of population differentiation and speciation. Together with new coalescent-based methods, the recent availability of genome-wide data enables investigation of differentiation and divergence processes at unprecedented depth. We combined two powerful approaches, ... 569 Beauchaine Theodore P TP Ohio State - - 2013 Research on child and adolescent mental health problems has burgeoned since the inaugural issue of Development and Psychopathology was published in 1989. In the quarter century since, static models of psychopathology have been abandoned in favor of transactional models, following the agenda set by editor Dante Cicchetti and other proponents ... 570 Breslow Norman E NE Department of Biostatistics, University of Washington, Seattle, WA, USA, Tel.: - - 2013 Standard analyses of data from case-control studies that are nested in a large cohort ignore information available for cohort members not sampled for the sub-study. This paper reviews several methods designed to increase estimation efficiency by using more of the data, treating the case-control sample as a two or three ... 571 Connor Edward F EF Department of Biology, San Francisco State University, 1600 Holloway Avenue, San Francisco, California 94132, USA. - - 2013 To address the idea that the process of interspecific competition can be inferred from data on geographical distribution alone and that evidence from geographical distribution implies an important role for interspecific competition in shaping ecological communities, we reexamine the occurrence of "true checkerboard" distributions among the land and freshwater birds ... 572 Segoli Michal M Department of Entomology, 1 Shields Avenue, University of California, Davis, California 95616, USA. - - 2013 Debates on the relative importance of different factors in limiting the realized fitness of insect parasitoids and herbivores have continued for decades. One major reason for the duration of these debates is the paucity of empirical evidence regarding the reproductive success of minute insects under field conditions. We used a ... 573 Papastamatiou Yannis P YP Florida Museum of Natural History, University of Florida, Gainesville, Florida 32611, USA. - - 2013 Animals are often faced with complex movement decisions, particularly those that involve long-distance dispersal. Partial migrations, ubiquitous among all groups of vertebrates, are a form of long-distance movement that occurs when only some of the animals in a population migrate. The decision to migrate or to be a resident can ... 574 Che Azemin M Z - - 2013 The fractal dimension is a global measure of complexity and is useful for quantifying anatomical structures, including the retinal vascular network. A previous study found a linear declining trend with aging on the retinal vascular fractal dimension (DF); however, it was limited to the older population (49 years and older). ... 575 Mohammadpoorasl Asghar A Department of Public Health, School of Health, Qazvin University of Medical Sciences, Qazvin, - - 2013 Notwithstanding the importance of smoking stages evaluation in adolescents, there is not an appropriate instrument for its measurement. This study aims to introduce an appropriate instrument for measurement of smoking stages in adolescents and to examine its validity using latent class analysis (LCA) model. We designed an algorithm to measure ... 576 Zhao Guangri G Guangri Zhao, Department of Chest Surgery, Department of Chest Surgery, Guangzhou Medical University Cancer Institute and Hospital, Guangzhou, - - 2013 Objectives: A number of studies conducted to assess the association between Clara cell 10-kDa protein (CC10) +38A/G polymorphism and susceptibility to asthma have yielded inconsistent and inconclusive results. In the present study, the possible association was assessed by a meta-analysis. Methods: Relevant articles were identified for the period ranging from ... 577 Tran A A CIRAD, UPR Animal et Gestion Intégrée des Risques (AGIRs), Montpellier, France; CIRAD, UMR Territoires, Environnement, Télédétection et Information Spatiale (TETIS), Montpellier, - - 2013 Rift Valley fever (RVF) is a severe mosquito-borne disease that is caused by a Phlebovirus (Bunyaviridae) and affects domestic ruminants and humans. Recently, its distribution widened, threatening Europe. The probability of the introduction and large-scale spread of Rift Valley fever virus (RVFV) in Europe is low, but localized RVF outbreaks ... 578 Gagnon Marie-Pierre - - 2013 Several countries are in the process of implementing an Electronic Health Record (EHR), but limited physicians' acceptance of this technology presents a serious threat to its successful implementation. The aim of this study was to identify the main determinants of physician acceptance of EHR in a sample of general practitioners ... 579 Rau Andrea - - 2013 In recent years, there has been great interest in using transcriptomic data to infer gene regulatory networks. For the time being, methodological development in this area has primarily made use of graphical Gaussian models for observational wild-type data, resulting in undirected graphs that are not able to accurately highlight causal ... 580 O'Connor Annette M - - 2013 Observational studies represent a wide group of studies where the disease or condition of interest is naturally occurring and the investigator does not control allocation to interventions or exposures. Observational studies are used to test hypotheses about the efficacy of interventions or about exposure-disease relationships, to estimate incidence or prevalence ... 581 Hengartner Michael P - - 2013 The literature proposes a joint structure of normal and pathological personality with higher-order factors mainly based on the five-factor model of personality (FFM). The purpose of the present study was to examine the joint structure of the FFM and the DSM-IV personality disorders (PDs) and to discuss this structure with ... 582 Vieland Veronica J - - 2013 OBJECTIVE The Combined Analysis of Psychiatric Studies (CAPS) project conducted extensive review and regularization across studies of all schizophrenia linkage data available as of 2011 from the National Institute of Mental Health-funded Center for Collaborative Genomic Studies on Mental Disorders, also known as the Human Genetics Initiative (HGI). The authors ... 583 Wu J - - 2013 SUMMARY This study examined the effects of meteorological factors, particularly, extreme weather events, on the prevalence of childhood diarrhoeal disease in Matlab, Bangladesh. Logistic regression models were used to examine impacts of temperature, rainfall and the extreme weather factors (the number of hot days and days with heavy rainfall) on ... 584 Xu Fang - - 2013 As a group of important plant species in agriculture and biology, polyploids have been increasingly studied in terms of their genome structure and organization. There are two types of polyploids, allopolyploids and autopolyploids, each resulting from a different genetic origin, which undergo meiotic divisions of a distinct complexity. A set ... 585 Escott-Price Valentina - - 2013 We evaluate the effect of genotyping errors on the type-I error of a general association test based on genotypes, showing that, in the presence of errors in the case and control samples, the test statistic asymptotically follows a scaled non-central $\chi ^2$ distribution. We give explicit formulae for the scaling ... 586 Posma Joram M - - 2013 MetaboNetworks is a tool to create custom sub-networks in Matlab using main reaction pairs as defined by the Kyoto Encyclopaedia of Genes and Genomes (KEGG) and can be used to explore transgenomic interactions, for example mammalian and bacterial associations. It calculates the shortest path between a set of metabolites (e.g. ... 587 Peeler E J - - 2013 The application of risk analysis to the spread of disease with international trade in animals and their products, that is, import risk analysis (IRA), has been largely driven by the Sanitary and Phytosanitary (SPS) agreement of the World Trade Organization (WTO). The degree to which the IRA standard established by ... 588 Lee Jin - - 2013 The goal of this study was to examine the external validity of a 12-item generic safety climate scale for lone workers in order to evaluate the appropriateness of generalized use of the scale in the measurement of safety climate across various lone work settings. External validity evidence was established by ... 589 Keller Virginie D J VD Centre for Ecology and Hydrology, Wallingford, Oxfordshire, United - - 2013 Dilution factors are a critical component in estimating concentrations of so-called "down-the-drain" chemicals (e.g., pharmaceuticals) in rivers. The present study estimated the temporal and spatial variability of dilution factors around the world using geographically referenced data sets at 0.5° × 0.5° resolution. Domestic wastewater effluents were derived from national per capita domestic ... 590 Ansari M Azim - - 2013 Patterns of linkage disequilibrium, homoplasy and incompatibility are difficult to interpret because they depend on several factors, including the recombination process and the population structure. Here we introduce a novel model-based framework to infer recombination properties from such summary statistics in bacterial genomes. The underlying model is sequentially Markovian so ... 591 Mullon Charles - - 2013 Natural selection favors alleles that increase the number of offspring produced by their carriers. But in a world that is inherently uncertain within generations, selection also favors alleles that reduce the variance in the number of offspring produced. If previous studies have established this principle, they have largely ignored fundamental ... 592 Dueri Sibylle S UMR 212 EME, IRD (Institut de Recherche pour le Développement), Sète, - - 2013 Climate-induced changes in the physical, chemical, and biological environment are expected to increasingly stress marine ecosystems, with important consequences for fisheries exploitation. Here, we use the APECOSM-E numerical model (Apex Predator ECOSystem Model - Estimation) to evaluate the future impacts of climate change on the physiology, spatial distribution, and abundance ... 593 Alemu S W - - 2013 Social interactions among individuals are widespread, both in natural and domestic populations. As a result, trait values of individuals may be affected by genes in other individuals, a phenomenon known as indirect genetic effects (IGEs). IGEs can be estimated using linear mixed models. The traditional IGE model assumes that an ... 594 Marchand Alain A School of Industrial Relations, University of Montreal, Montreal, Quebec, Canada. Electronic address: - - 2014 The current study assessed which specific burnout symptoms were most predictive of distinct diurnal cortisol profiles. Participants included 401 day-shift workers employed in a random sampling of 34 Canadian workplaces. The 16-item Maslach Burnout Inventory was used to extract burnout sub-scales that included emotional exhaustion, cynicism, professional inefficacy, as well ... 595 Kim Hye-Young - - 2013 It has been proposed that choice utility exhibits an inverted U-shape as a function of the number of options in the choice set. However, most researchers have so far only focused on the "physically extant" number of options in the set while disregarding the more important psychological factor, the "subjective" ... 596 Ip Edward H - - 2013 The reliability of an item designed to measure health belief is often confounded with response consistency at the person level. The study applied contemporary measurement methods to an inventory of common sense beliefs about diabetes and used a sample of N = 563 adults with diabetes to test the hypothesis ... 597 Asfahani Jamal - - 2013 Factor analysis technique is proposed in this research for interpreting the combination of nuclear well logging, including natural gamma ray, density and neutron-porosity, and the electrical well logging of long and short normal, in order to characterize the large extended basaltic areas in southern Syria. Kodana well logging data are ... 598 Sheng Gui-Lian - - 2013 The living hyena species (spotted, brown, striped and aardwolf) are remnants of a formerly diverse group of more than 80 fossil species, which peaked in diversity in the Late Miocene (about 7-8 Ma). The fossil history indicates an African origin, and morphological and ancient DNA data have confirmed that living spotted ... 599 Matino D D Experimental Medicine and Biochemical Sciences, University of Perugia, Perugia, - - 2014 The development of neutralizing antibodies to factor VIII (FVIII) is the most serious complication of therapy for haemophilia A. There is now excellent documentation that a large number of both genetic and environmental factors contribute to the risk of FVIII inhibitor incidence. One of the environmental factors that has been ... 600 Rice Mabel L - - 2013 This study investigated the etiology of Late Language Emegence (LLE) in 24-month-old twins considering possible twinning, zygosity, gender, and heritability effects for vocabulary and grammar phenotypes. A population-based sample of 473 twin pairs participated. Multilevel modelling estimated means and variances of vocabulary and grammar phenotypes, controlling for familiality. Heritability was ... < 7 8 9 10 11 12 13 14 15 16 17 >