The Receiver Operating Characteristic (ROC) curve is a useful tool to measure the classification capability of continuous variable assess accuracy medical test that distinguishes between two conditions. Sometimes, covariates related diagnostic may increase discriminating power ROC curve. Due lack stability classical curves estimators outliers, we introduce procedure obtain robust in presence co...

اندازه‌گیری پرتو گاما در زمینه‌های مختلف تحقیقاتی نیازمند آشکارسازهای کارآمد است. زمینه دزیمتری فوتون آشکارساز جرقه‌ای NaI(Tl) به عنوان یکی از سوسوزن معدنی (غیرآلی)، علت دارا بودن مقدار بالای نور خروجی بسیار حایز اهمیت این پژوهش سعی گردیده است، با کمک کد مونت‌کارلو (MCNPX) مقدمات مشخصه‌یابی توسط و بهره‌گیری روش‌های متفاوت محاسبه دز (تالی‌های 6F، 4*F، 6+F 8*F) انجام شود. طور معمول، یک تابش (شمار...

هدف: پژوهش حاضر با هدف شناسایی و اولویت‌بندی پیشایندها پسایندهای سبک رهبری چابک استفاده از روش دلفی فازی صورت پذیرفت.طراحی/ روش‌شناسی/ رویکرد: این نوع پژوهش‌های آمیخته رویکرد کیفی کمی در پارادایم استقرایی است که نظر هدف، کاربردی لحاظ ماهیت روش، اکتشافی است. جامعه آماری شرکت‌های دانش‌بنیان استان لرستان هستند 30 نفر خبرگان آنها بر اساس اصل کفایت نظری نمونه‌گیری هدفمند انتخاب شده‌اند. ابزار گردآور...

Lampinen (2016) suggested that proponents of ROC analysis may prefer that approach to the diagnosticity ratio because they are under the impression that it provides a theoretical measure of underlying discriminability (d'). In truth, we and others prefer ROC analysis for applied purposes because it provides an atheoretical measure of empirical discriminability (namely, partial areaunder-the-cur...

Which eyewitness identification procedure better enables eyewitnesses to discriminate between innocent and guilty suspects? In other words, which procedure better enables eyewitnesses to sort innocent and guilty suspects into their correct categories? The answer to that objective, theory-free question is what policymakers need to know, and it is precisely the information that ROC analysis provi...

Department of Emergency Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan, ROC Division of Infectious Diseases, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan, ROC Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan, ROC Department of Internal Medicine, National Taiwan University Hospital, Tai...

The receiver operating characteristic (ROC) curve, which is defined as a plot of test sensitivity as they coordinate versus its 1-specificity or false positive rate (FPR) as the x coordinate, is an effective method of evaluating the performance of diagnostic tests. The purpose of this article is to provide a nonmathematical introduction to ROC analysis. Important concepts involved in the correc...

Recollection has long been thought to play a key role in associative recognition tasks. Evidence that associative recollection might be a threshold process has come from analyses of the associative recognition receiver operating characteristic (ROC). Specifically, the ROC is not as curvilinear as a signal detection theory requires. In addition, the Z-ROC is usually curvilinear, as a threshold r...

Receiver operating characteristic (ROC) analysis is a widely accepted method for analyzing and comparing the diagnostic accuracy of radiological tests. In this paper we will explain the basic principles underlying ROC analysis and provide practical information on the use and interpretation of ROC curves. The major applications of ROC analysis will be discussed and their limitations will be addr...