If observations covering the whole of a body of material are available, the errors which are to be expected when sampling further material of the same type can be estimated and the relative accuracy of different sampling methods determined. Unfortunately, however, the numerical work required for investigations of this kind is very considerable, and in consequence when only desk machines are ava...

BACKGROUND Most cancer care occurs within infusion rooms at ambulatory cancer centers, which are staffed by RNs administering chemotherapies and other cancer care medications. Many patients receiving these therapies have basic palliative care needs that could be addressed by the RNs. However, the extent to which these RNs spend their time on basic, or "primary," palliative care is unknown. OB...

Sampling plays a major role in quality improvement work. Random sampling (assumed by most traditional statistical methods) is the exception in improvement situations. In most cases, some type of "judgment sample" is used to collect data from a system. Unfortunately, judgment sampling is not well understood. Judgment sampling relies upon those with process and subject matter knowledge to select ...

OBJECTIVES The objective of the present study was to evaluate and compare the efficiency of a filter based sampling method and a high volume sampling method for sampling airborne culturable fungi present in waste sorting facilities. MATERIAL AND METHODS Membrane filters method was compared with surface air system method. The selected sampling methods were modified and tested in 2 plastic wast...

Purpose – The purpose of this paper is to establish a version of a theorem that originated from population genetics and has been later adopted in evolutionary computation theory that will lead to novel Monte-Carlo sampling algorithms that provably increase the AI potential. Design/methodology/approach – In the current paper the authors set up a mathematical framework, state and prove a version ...

Recent research in bidirectional importance sampling has focused primarily on structured illumination sources such as distant environment maps, while unstructured illumination has received little attention. In this paper, we present a method for bidirectional importance sampling of unstructured illumination, allowing us to use the same method for sampling both distant as well as local/indirect ...

Time spent sitting has been associated with an increased risk of diabetes, cancer, obesity, and mental health impairments. However, 75% of Americans spend most of their days sitting, with work-sitting accounting for 63% of total daily sitting time. Little research examining theory-based antecedents of standing or sitting has been conducted. This lack of solid groundwork makes it difficult to de...

The majority of machine vision systems derive their input data by digitising an image to produce a square grid of sampled points. However, other sampling techniques can represent equal picture information in a smaller number of samples, with a consequent reduction in data rate. Several workers have looked at regular hexagonal sampling of images which produces optimum data rates for a given info...

a chromium electroplating bath with the ability to produce homogenous mist was used to evaluate parameters influencing hexavalent chromium (cr+6) mist sampling methods. the results of 48 cr+6mist samples collected using the u.s. national institute for occupational safety and health method 7600showed that cr+6concentration was higher: (1) for sampling by closed-face filter cassettes than for sam...

the purpose of this study was to investigating the effect of organizational justice and organizational citizenship behavior mediated by the quality of work life. population of the study was all male and female staffs' mazandaran university (n=419). research sample was included 156 persons who were selected with random sampling method across staffs' mazandaran university. for data gath...