نتایج جستجو برای: weight restrictions
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Abstract: We obtain formulae for the expected number and height distribution of critical points of general smooth isotropic Gaussian random fields parameterized on Euclidean space or spheres of arbitrary dimension. The results hold in general in the sense that there are no restrictions on the covariance function of the field except for smoothness and isotropy. The results are based on a charact...
Background and purpose: Nutritional behavior of children depends largely on the behavior of their parents, especially their mothers. Therefore, this study was conducted to determine and compare the nutritional behaviors of mothers of overweight and obese children with those of normal weight children. Materials and methods: This descriptive-analytical case-control study was performed in element...
BACKGROUND Mental and physical disorders are associated with total disability, but their effects on days with partial disability (i.e. the ability to perform some, but not full-role, functioning in daily life) are not well understood. AIMS To estimate individual (i.e. the consequences for an individual with a disorder) and societal effects (i.e. the avoidable partial disability in the society...
OBJECTIVE To determine the risk of recurrent stillbirth. DESIGN Systematic review and meta-analysis of cohort and case-control studies. DATA SOURCES Embase, Medline, Cochrane Library, PubMed, CINAHL, and Scopus searched systematically with no restrictions on date, publication, or language to identify relevant studies. Supplementary efforts included searching relevant internet resources as w...
Motivated by a real world application, we study the multiple knapsack problem with assignment restrictions (MKAR): We are given a set of items N = f1; : : : ; ng and a set of knapsacks M = f1; : : : ;mg. Each item j 2 N has a positive real weight wj and each knapsack i 2 M has a positive real capacity ci associated with it. In addition, for each item j 2 N a set Aj M of knapsacks that can hold ...
We propose and evaluate several new scoring rules based on likelihood ratios, for comparing forecast densities in the context of VaR modelling and expected loss estimation. Our approach is motivated by the observation that existing scoring rules tend to favour fat-tailed models when compared with thin-tailed models. Rather than restricting the weight functions, we impose some restrictions on th...
If each arc in a strongly connected directed graph of minimum in-degree and outdegree at least 3 is assigned a weight 0 or 1, then the resultingweighted directed graph has a directed cycle of even total weight. This provesa conjecture made by L. Lovasz in 1975 and has applications to colour-criticalhypergraphs, sign-nonsingular matrices, and permanents of matrices. MATHEMATICAL ...
Light-matter interaction gives optical microscopes tremendous versatility compared with other imaging methods such as electron microscopes, scanning probe microscopes, or x-ray scattering where there are various limitations on sample preparation and where the methods are inapplicable to bioimaging with live cells. However, this comes at the expense of a limited resolution due to the diffraction...
Numerous studies have addressed the issue of where people look when they perform hand movements. Yet, very little is known about how visuomotor performance is affected by fixation location. Previous studies investigating the accuracy of actions performed in visual periphery have revealed inconsistent results. While movements performed under full visual-feedback (closed-loop) seem to remain surp...
Body mass index (BMI) has become the most commonly used index of body composition in epidemiologic research. It has displaced weight, height, and other measures of body composition. In this paper, the authors show that use of BMI alone does not always capture adequately the joint relation of body composition and body size to health outcomes, and that such use often represents implausible restri...
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