نتایج جستجو برای: generalized dissimilarity index
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در این مطالعه، 40 نفر از مراجعه کنندگان به بخش پریودونتولوژی دانشکده دندانپزشکی مشهد که مبتلا به generalized chronic periodontitis بودند، انتخاب شدند. بیماران فوق به صورت تصادفی به دو گروه 20 نفری مورد و شاهد تقسیم شده و برای هر گروه بعد از انجام جرم گیری و تسطیح سطح ریشه، شاخص های plaque index (pi)، gingival index (gi)، شاخص bleeding on probing (bop) و عمق پاکت (pd) در چهار ناحیه شامل مزیوباکا...
We discussed three dissimilarity measures between dendrograms defined over the same set, they are triples, partition, and cluster indices. All of them decompose the dendrograms into subsets. In the case of triples and partition indices, these subsets correspond to binary partitions containing some clusters, while in the cluster index, a novel dissimilarity method introduced in this paper, the s...
In real life biomedical classification applications, feature space may be of high dimension in which visualization of class distribution is impossible. Moreover, attributes of features may be numeric, ordinal, categorical or binary. Most of the time, features may be composed of mixed type of attributes. In this paper, the concept of similarity-dissimilarity is extended to various types of attri...
Introduction: Inequity in access to health care facilities in one area could result in misdistribution of these resources. The aim of this study was to measure equity in distribution of physical and human resources in health sector among the cities of Loresta Province. Method: This survey is an analytical and descriptive study. Measuring inequity in distribution of resources and health care fa...
Self-similarity was recently introduced as a measure of inter-class congruence for classification of actions. Herein, we investigate the dual problem of intra-class dissimilarity for classification of action styles. We introduce self-dissimilarity matrices that discriminate between same actions performed by different subjects regardless of viewing direction and camera parameters. We investigate...
Clustering algorithms have been actively used to identify similar time series, providing a better understanding of data. However, common clustering dissimilarity measures disregard time series correlations, yielding poor results. In this paper, we introduce a dissimilarity measure based on series partial autocorrelations. Experiments compare hierarchical clustering algorithms using the common d...
Investigating the physiological potential of seeds and genetic divergence between families is essential to identify promising materials for generation improved populations. This study was undertaken examine germination estimate Passiflora full-sib (FSFs) based on physical seed traits. The experiment consisted 86 FSFs from first cycle recurrent selection resistance cowpea aphid-borne mosaic viru...
background : one of the major health policy issues, in the both developed and developing countries, is the equality in the distribution of health resources. the aim of this study was to investigate the disparity in the distribution of health physical resources across the provinces of iran in 2001 and 2011. methods : this was a cross-sectional retrospective study which investigated inequality in...
unsteady convective diffusion in a herschel–bulkley fluid in a conduit with interphase mass transfer
the combined effect of non-newtonian rheology and irreversible boundary reaction on dispersion in a herschel-bulkley fluid through a conduit (pipe/channel) is studied by using generalized dispersion model. the study explains the development of dispersive transport following the injection of a tracer in terms of three effective transport coefficients namely exchange, convective and dispersion co...
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