نتایج جستجو برای: at 99 confidence level both
تعداد نتایج: 5351711 فیلتر نتایج به سال:
This paper discusses a universal approach to the construction of confidence regions for level sets {h(x) ≥ 0} ⊂ Rd of a function h of interest. The proposed construction is based on a plug-in estimate of the level sets using an appropriate estimate �hn of h. The approach provides finite sample upper and lower confidence limits. This leads to generic conditions under which the constructed confid...
BACKGROUND Minimal access surgery for gastrointestinal cancer has short-term benefits but is associated with a proficiency-gain curve. The aim of this study was to define national proficiency-gain curves for minimal access colorectal and oesophagogastric surgery, and to determine the impact on clinical outcomes. METHODS All adult patients undergoing minimal access oesophageal, colonic and rec...
the aim of this study has been to find answers for the following questions: 1. what is the effect of immediate correction on students pronunciation errors? 2. what would be the effect of teaching the more rgular patterns of english pronunciation? 3. is there any significant difference between the two methods of dealing with pronuciation errore, i. e., correction and the teaching of the regular ...
Often the confidence of a classification prediction can be as important as the prediction itself although current classification confidence measures are not necessarily consistent between different data sets. Thus in this paper, we present an algorithm to predict instance level classification confidence that is more consistent between data sets and is intuitive to interpret. The results with fi...
Today, the speed of change in the areas of technology, software and hardware, market knowledge and even the political economy of countries on the one hand and as well as the initiative with the speed of action in business areas has made companies face the challenge, it has become the era of competition today, which contributes to the extent to which a company achieves its own goals based on exp...
This paper measured the value at risk (VaR) and expected shortfall (ES) of the US Treasury yield changes. The US Treasury yield data were tested and found to be not normally distributed. Consequently, the mixture normal model (MNM) was used to improve the delta normal VaR and ES measures. It performed extraordinarily well in all cases, based on bootstrapping and mean square error tests. In addi...
OBJECTIVE To validate procalcitonin (PCT) level as the best biological marker to distinguish between bacterial and aseptic meningitis in children in the emergency department. DESIGN Secondary analysis of retrospective multicenter hospital-based cohort studies. SETTING Six pediatric emergency or intensive care units of tertiary care centers in 5 European countries. PARTICIPANTS Consecutive...
Studies exploring psychological and social work factors in relation to mental health problems (anxiety and depression) have mainly focused on a limited set of exposures. The current study investigated prospectively a broad set of specific psychological and social work factors as predictors of potentially clinically relevant mental distress (anxiety and depression), i.e. "caseness" level of dist...
Procrastination can affect some people in negative ways (Tice 1997). Teenagers are vulnerable to the detrimental effects of procrastination as they learn manage school-life balance (Reinecke 2018). The coronavirus pandemic led virtual education and less extracurricular activities, inadvertently increasing teens’ unscheduled home time possibly altering habits. There is little research about pand...
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