نتایج جستجو برای: standard sample unit
تعداد نتایج: 1239427 فیلتر نتایج به سال:
BACKGROUND Management and traceability of biospecimen preanalytical variations are necessary to provide effective and efficient interconnectivity and interoperability between Biobanks. METHODS Therefore, the International Society for Biological and Environmental Repositories Biospecimen Science Working Group developed a "Standard PREanalytical Code" (SPREC) that identifies the main preanalyti...
We study two standard multi-unit auction formats for allocating multiple units of asingle good to multi-demand bidders. The first one is the Discriminatory Auction, whichcharges every winner his winning bids. The second is the Uniform Price Auction, whichdetermines a uniform price to be paid per unit. Variants of both formats find applicationsranging from the allocation of s...
AIM The combination of different imaging modalities through the use of fusion devices promises significant diagnostic improvement for breast pathology. The aim of this study was to evaluate image quality and clinical feasibility of a prototype fusion device (fusion prototype) constructed from a standard tomosynthesis mammography unit and a standard 3D ultrasound probe using a new method of brea...
introduction: leukocytes causing a wide variety of side effects after transfusion are present in all blood products prepared by standard methods. as a consequence, the use of filter technology for leukoreduction has been widely practiced .according to aabb accreditation in 1996, leukoreduced blood components must contain less than 5×106 leukocytes per unit, but sometimes this value is higher ev...
The size and number of sampling units needed to sample herbaceous oldfield vegetation must be determined for each situation. Prior to obtaining data for a long-term study of early oldfield plant succession at the Waterloo Mills Field Research Station, Pa. statistical tests and theoretical considerations were evaluated. Of the five sizes of circular quadrats tested, the 0.03125 m size was determ...
Background & Aim: Due to a constant contact of dentists and patients with water and aerosols generated from the dental units, the quality of dental unit waters is very important. This study aimed to evaluate bacterial contamination of dental unit water lines in Zahedan in 2016-2017. Methods: In this descriptive analytical study, 2304 water samples from four parts of unit including cup filler, ...
Background: Infant mortality is important as a standard indicator for the development of health, educational and social health systems in each country. Considering the fact that in different studies of the country there are different statistics on the prevalence of infant mortality in the intensive care unit and the general statistics on the prevalence of mortality in neonates in the country ar...
In an example with two objects and four bidders, some of which have superadditive values, we characterize the equilibria of a simultaneous ascending auction and compare the revenue and efficiency generated with ones generated by the sequential, the one-shot simultaneous, and the Vickrey-Clarke-Groves auctions. ∗Germano acknowledges financial support from European Commission Grant ERBFMBICT97285...
This paper presents codes on the highest number a society can count to. In the original study (Divale 1999) these codes were used to test a model that explains the variability in counting systems found in traditional societies. Societies that live in areas of climatic instability in terms of temperature and precipitation extremes tend to have period starvation and famine, which in turn stimulat...
This paper proposes a test of the null hypothesis of stationarity that is robust to the presence of fat-tailed errors. The test statistic is a modified version of the so-called KPSS statistic. The modified statistic uses the ”sign” of the data minus the sample median, whereas KPSS used deviations from means. This ”indicator” KPSS statistic has the same limit distribution as the standard KPSS st...
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