BACKGROUND Tanzania has a young mining history with several operating open pit and underground mines. No prevalence studies of noise-induced hearing loss (NIHL) have been conducted among mine workers to provide an impetus for the development of comprehensive hearing protection programmes. AIMS To determine the prevalence of NIHL and associated factors among miners in a major gold mining compa...

The objective of this paper is to investigate the use of cross-company and within-company cost estimation model for Web projects. The study analysis method we used was a forward, stepwise regression of web project development effort with independent variables that were used for on-line web application price quotations. Model cross-validation used two approaches: one-fold cross validation and a ...

in this paper, we focus on the new draft article 479 of the commercial code concerning single-member company and reviewed the legal perspectives of this matter. the reasoning, advantages and disadvantages, and necessary safeguards of this institution are investigated and through a comparative study the most important rules of acceptance of this type of company is reviewed. the terminology , amb...

Managers usually associate ergonomics with occupational health and safety and related legislation, not with business performance. In many companies, these decision makers seem not to be positively motivated to apply ergonomics for reasons of improving health and safety. In order to strengthen the position of ergonomics and ergonomists in the business and management world, we discuss company str...

Distributive laws between functors are a fundamental tool in the theory of coalgebras. In the context of coinduction in complete lattices, they correspond to the so-called compatible functions, which enable enhancements of the coinductive proof technique. Amongst these, the greatest compatible function, called the companion, has recently been shown to satisfy many good properties. Categorically...

Job satisfaction is a contented feeling of employees when they are able to fulfill expectations for needs with good work-life balance conditions so that can work effectively and efficiently. The goal this study was find out how workers in the shipyard industry feel about their happy jobs. variables were characteristics (age, education level, marital status, years service). data shown frequency ...

OBJECTIVE – The objective of this paper is to determine under what circumstances individual organisations would be able to rely on cross-company-based estimation models. METHOD – We performed a systematic review of studies that compared predictions from cross-company models with predictions from within-company models based on analysis of project data. RESULTS – Ten papers compared crossand with...