نتایج جستجو برای: quality variations

تعداد نتایج: 927433  

2017
V. Karpagam B. S. Abdur rahman

Multivariate statistical techniques such as factor analysis (FA) and cluster analysis (CA) were applied for the evaluation of spatial variations and the interpretation of a large complex water quality data set of Chrompet in Chennai, Tamil Nadu. 11 parameters of water samples collected from 16 different sampling stations of city was determined. Factor analysis indicates three factors in pre mon...

Journal: :British journal of preventive & social medicine 1975
J Down A H Snaith

A study in Derbyshire showed that there are wide variations in the populations served by individual home nurses. These variations are difficult to reduce. To assess the quantity and quality of home nursing that is provided more sophisticated formulae than the nurse/population ratio are necessary. For these data derived from output of work are inadequate; studies of need are required in each loc...

Journal: :تحقیقات نظام سلامت 0
سعید راثی نظامی دانشجوی دکتری، گروه مهندسی عمران- محیط زیست، دانشکده محیط زیست، دانشگاه تهران، تهران، ایران مهرداد نظری ها استادیار، گروه مهندسی محیط زیست، دانشکده محیط زیست، دانشگاه تهران، تهران، ایران اکبر باغوند دانشیار، گروه مهندسی محیط زیست، دانشکده محیط زیست، دانشگاه تهران، تهران، ایران علی مریدی - استادیار، گروه مهندسی منابع آب، دانشکده مهندسی آب و محیط زیست، دانشگاه صنعت آب و برق شهید عباسپور، تهران، ایران

background: the spread of urbanization in floodplains as well as increase of industrial and agricultural activities in river discharges may lead to water pollution by physical, chemical and biological pollutants. one of the major concerns in monitoring the water resources system is indentifying major quality parameters and determining a relationship between physical and chemical parameters. thi...

Journal: :IEICE Transactions 2009
Yong Zhang Shensheng Zhang Songqiao Han

This paper proposes a novel service configuration approach that can realize dynamic critical Quality of Service (QoS) adaptation to ever-changing and resource-limited ubiquitous computing environments. In the approach, service configuration is reduced to a Fuzzy Control System (FCS) which aims to achieve critical QoS variations on minimal level with less power cost. Two configuration strategies...

Journal: :CoRR 1996
Min Zhang

Several methods have been proposed for processing a corpus to induce a tagset for the sublanguage represented by the corpus. This paper examines a structured-tag word classification method introduced by McMahon (1994). Two major variations (non-random initial assignment of words to classes and moving multiple words in parallel) together provide robust non-random results with a speed increase of...

2010
Mahmut Yilmaz Krishnendu Chakrabarty Mohammad Tehranipoor

Timing-related defects are a major cause for test escapes and field returns for very-deep-sub-micron (VDSM) integrated circuits (ICs). Small-delay variations induced by crosstalk, process variations, power-supply noise, and resistive opens and shorts can cause timing failures in a design, thereby leading to quality and reliability concerns. We present the industrial application and case study o...

2001
Aruna Thakur Chaunsi Gao Andreas Larsson Peter Parnes

This report discusses the effect of frame-rate and image quality on the perceived video quality in a specific videoconferencing application (MarratechPro). Subjects with various videoconferencing experiences took part in four experiments wherein they gave their opinions on the quality of video upon the variations in frame-rate and image quality. The results of the experiments showed that the su...

Journal: :Journal of water and health 2011
Morgane Bougeard Jean-Claude Le Saux Anna Teillon Jérôme Belloir Cécile Le Mennec Sterenn Thome Gael Durand Monique Pommepuy

The present study sought to identify Escherichia coli sources in a small catchment and to use the agro-hydrological model soil and water assessment tool (SWAT) to estimate their impact on river water quality. The innovative aspects of this research are to assess the hourly variations of fecal contamination and to take these variations into account in the model to provide a better evaluation of ...

2017
Margaret E Kruk Adanna Chukwuma Godfrey Mbaruku Hannah H Leslie

OBJECTIVE To analyse factors affecting variations in the observed quality of antenatal and sick-child care in primary-care facilities in seven African countries. METHODS We pooled nationally representative data from service provision assessment surveys of health facilities in Kenya, Malawi, Namibia, Rwanda, Senegal, Uganda and the United Republic of Tanzania (survey year range: 2006-2014). Ba...

2012
E. Mattei

Motivations The recent advances in the technologies and strategies for DNA sequencing have dramatically facilitated the identification of novel human genes associated with rare and common diseases [1]. However novel methods are needed to identify high-quality variations among all the ones identified in a single experiment. The most successful approach to identify disease-causing mutations consi...

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