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تعداد نتایج: 16852469 فیلتر نتایج به سال:
It is well known that at the same time as the use of networks in communication has become increasingly popular during the past two decades, the number of security violations has increased drastically. Originally, the universal information networks, Internet and World Wide Web, did not possess any inbuilt security structures; they have been designed to be without controlling elements, to be as o...
background and purpose: coping strategies play a key role in the management of different diseases. resilience and positive emotions in patients could enhance coping strategies and reduce disease complications. this study aimed to determine the level of resilience and the associated factors in patients with coronary artery disease (cad). methods: this descriptive cross-sectional study was conduc...
Over the last several years, a number of plant studies have utilized high throughput analysis methods, such as expression profiling, protein quantization, and metabolic profiling, on plants to obtain large data sets of molecular phenotypes on a variety of genetic backgrounds (see Young and Udvardi, 2008). For example, metabolic profiling has been used to observe the effects of mutated genes (Fe...
Nocturnal urinary continence is dependent on 3 factors: 1) nocturnal urine production, 2) nocturnal bladder function and 3) sleep and arousal mechanisms. Any child will suffer from nocturnal enuresis if more urine is produced than can be contained in the bladder or if the detrusor is hyperactive, provided that he or she is not awakened by the imminent bladder contraction. Urine production is re...
In many areas of research the measured spectra consist of a collection of "peaks"--the sought-for signals--which sit on top of an unknown background. The subtraction of the background in a spectrum has been the subject of many investigations and different techniques, varying from filtering to fitting polynomial functions, have been developed. These techniques yield results that are not always s...
B aystate Medical Center (Springfield, MA) is an academically oriented tertiary care facility affiliated with Tufts University School of Medicine that serves the entire western portion of Massachusetts. Its general surgical residency program graduates five residents each year. Surgical education and research is a significant priority of the senior administration of the health-care system and de...
This paper presents a new approach for real time detection and tracking of human hands and faces in image sequences. The proposed method builds upon our previous research on color-based tracking and extends it towards building a system capable of distinguishing between human hands, faces and other skin-colored regions in the image background. To achieve these goals, the proposed approach allows...
In this paper, we discuss methods of measuring the performance of ontology-based information extraction systems. We focus particularly on the Balanced Distance Metric (BDM), a new metric we have proposed which aims to take into account the more flexible nature of ontologically-based applications. We first examine why traditional Precision and Recall metrics, as used for flat information extract...
This paper addresses the problem of reliably fitting an orientated model to video data of laboratory mice assays by specifically locating semi-invariant points on an extracted outline. In the case of mice, the rapid changes in direction and shape often lead to failure when using explicit models. Here we employ a standard background subtraction algorithm in order to derive contour information fr...
Measurements of reflectance quantities collected in natural radiation conditions underpin quantitative Earth observation (EO) science through calibration, validation and atmospheric correction techniques. Despite their importance to the longevity of EO data, only a few studies have commented on the reliability of such measurements. This paper will report on results from three experiments. Each ...
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