نتایج جستجو برای: منحنیهای idf
تعداد نتایج: 3656 فیلتر نتایج به سال:
For bounded datasets such as the TRECWeb Track (WT10g) the computation of term frequency (TF) and inverse document frequency (IDF) is not difficult. However, when the corpus is the entire web, direct IDF calculation is impossible and values must instead be estimated. Most available datasets provide values for term count (TC) meaning the number of times a certain term occurs in the entire corpus...
INTRODUCTION Obtaining vascular access is of paramount importance in trauma care. When peripheral venous access is indicated but cannot be obtained, the intraosseous route represents an alternative. The Bone Injection Gun (BIG) is the device used for intraosseous access by the Israeli Defense Force (IDF). The purpose of this study is to assess the success rate of intraosseous access using this ...
The metabolic syndrome has been documented to increase the risk of cardiovascular disease and chronic kidney disease (CKD); however, there are few studies of this in developing countries. A total of 15,357 participants of a standardized check-up, included metabolic screening, were enrolled. Metabolic syndrome was defined using criteria modified from the National Cholesterol Education Program Ad...
BACKGROUND The metabolic syndrome (MES) is associated with a high risk of diabetes and cardiovascular disease. The aim of the present study was to determine the prevalence of the metabolic syndrome as well as cut-off points for waist circumference (WC) for diagnosis of MES in Zahedan, southeast Iran. METHODS Totally, 1802 people (735 men and 1067 women) with metabolic syndrome were surveyed a...
One of the goals of clinical decision support systems is to provide physicians information about how to best care for their patients. The Clinical Decision Support track organized by TREC, focuses on developing new techniques to retrieve articles from the biomedical literature relevant to the medical records of the patients. Due to the large volume of the existing literature and the diversity i...
Suicide is the third leading cause of death among adolescents in most Western world countries. Similar findings have been reported among adolescents in Israel (including the Israeli army) in times of peace; nonetheless, suicide rate has decreased significantly in recent years. In Israel, IDF service is mandatory and adolescents are obligated to serve by law. Therefore, the IDF is responsible un...
سندرم متابولیک توسط تعاریف مختلف بیان شده است. اخیرا در آپریل سال 2005، فدراسیون بین المللی دیابت (idf) تعریف جدیدی از سندرم متابولیک را بر پایه دو تعریف قبلی who و atpiii بیان کرده است. مطالعه حاضر با هدف تعیین شیوع سندرم متابولیک بر اساس این تعاریف و تعیین میزان هم خوانی تعریف idf با معیارهای atpiii و who طراحی شده است. روش ها: مطالعه حاضر یک مطالعه مقطعی است که در آن 10368 مرد و زن بالای 20 ...
background: the metabolic syndrome (mes) is associated with a high risk of diabetes and cardiovascular disease. the aim of the present study was to determine the prevalence of the metabolic syndrome as well as cut-off points for waist circumference (wc) for diagnosis of mes in zahedan, southeast iran. methods: totally, 1802 people (735 men and 1067 women) with metabolic syndrome were surveyed a...
یکی از پارامترهای مهم طراحی سازه های هیدرولیکی، رگبار طرح می باشد که از روی منحنی های شدت- مدت – فراوانی (idf) برای دوام و دوره ی بازگشت معین استخراج می شود. روش های متداول محاسبه ی منحنی های idf علاوه بر طولانی تر بودن، دارای تعداد پارامترهای زیادی می باشند که این خود باعث کاهش اعتماد پذیری این منحنی ها می شود. در روش متداول محاسبه ی منحنی هایidf، باید بارش به ازای دوام های مختلف ثبت شده باشد ...
Robertson comments on the theoretical status of IDF term weighting. Its history illustrates how ideas develop in a specific research context, in theory/experiment interaction, and in operational practice. It is an honour to have the small proposal for term weighting that I published more than thirty years ago (Sparck Jones 1972) the subject of Stephen Robertson’s paper (Robertson 2004). I would...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید