A composite random sampling design was used to estimate the concentrations of hydrocarbons in sediments from two near-shore areas of Scotland (Firth of Clyde and Firth of Forth). The aim of this work was to estimate a mean value for each parameter in these areas, and to determine whether this can be done with more thorough coverage (better representation), better precision and less variance at ...

background & aim: nursing practice is influenced by nurses' precived professional values. a small number of studies have been focused to measure professional values in nursing, whereas most of them focused on measuring values of nursing students. this study aimed to explore how nurses prioritize professional values. methods & materials: in this cross-sectional study, the professional values of ...

The problem of determining the structure of Nk(G) is of interest in several contexts. The counting problem goes back to Philip Hall, who expressed Nk(G) as a Möbius type summation of Nk(H) over all maximal subgroups H ⊂ G (see [23]). Recently the counting problem has been studied for large simple groups where remarkable progress has been made (see [25, 27]). In this paper we analyze Nk for solv...

Once the research question and the research design have been finalised, it is important to select the appropriate sample for the study. The method by which the researcher selects the sample is the ' Sampling Method'. There are essentially two types of sampling methods: 1) probability sampling - based on chance events (such as random numbers, flipping a coin etc.); and 2) non-probability samplin...

introduction: a career development consists of jobs that a person passes in order to reach a professional goal. career development management results in job satisfaction, professional commitment and higher effectiveness. the purpose of this study was to determine different dimensions of career development among the staff of shiraz university of medical sciences.   methods: this study was a cros...