نتایج جستجو برای: industry average
تعداد نتایج: 561412 فیلتر نتایج به سال:
The development of an industry is seen as the outcome of a differential game in which market shares flow in response to price differences. It is hypothesized that while all consumers eventually react to price differences, some are slower than others. If scale advantages have some influence on marginal costs around average market share, then, under reasonable conditions, only st'ewed size distri...
Introduction: 1,3-Butadiene is a carcinogenic compound that can be emitted to the atmosphere from several sources like petrochemical industry. One way to determine the level of carcinogenic and health effects of respiratory exposure to pollutants in the workplace is to use risk assessment methods. The aim of this study was to comparative assessment of carcinogenic risk of respiratory exposure t...
Empirical research has shown tremendous productivity di erences, even within narrowly de ned industries. A great host of studies is explainsing this productivity disparity by factors such as idiosyncratic technology shocks, input price di erences, management skills, or international trade. Although these explanations are undoubtedly important, the current paper suggests that product diversi cat...
the present study aimed to investigate the characteristics of occupational accidents and frequency and severity of work related accidents in the construction industry among iranian insured workers during the years 20072011.the iranian social security organization (isso) accident database containing 21,864 cases between the years 2007-2011 was applied in this study. in the next step, total accid...
Tourism industry is emerging as a new era, one of the main pillars of the economy, the business world. Many planners and policy makers in the development of the tourism industry as the main pillars of sustainable development are mentioned. In this direction, this research inspired by these changes and therefore Social indicators such as social capital, Sense of place, and so on programming usin...
Abstract Background: This study attempts to review dimensions and indicators of organizational culture in Petroleum Industry Health Organizations utilizing Denison navigation framework and provide practical solutions to improve the situation based on strengths and weaknesses identification. Material and Methods: Thisapplied study was a descriptive - analytical one which performed using field ...
As the largest service industry in the world, tourism plays a special role in sustainable development. Geomorphic tourism is known to be a segment of this industry with lower environmental impact and underlying causes that explain lower demand; therefore, it is essential to study, identify, assess, plan, and manage natural tourist attractions. As such, the present study assesses the ability of ...
Introduction: Styrene (C₆H₅CH=CH₂) is known as one of the volatile organic substances produced or used in petrochemical industries. Exposure to this chemical compound can thus lead to respiratory diseases. Therefore, this study aimed to evaluate occupational exposure to styrene vapor and to determine the risks of its health consequences in petrochemical industry workers through a quantitative m...
This is an investigation of stochastic choice when only the average of the choices is observable. For example when one observes aggregate sales numbers from a store, but not the frequency with which each item was purchased. The focus of our work is on the Luce model, also known as the Logit model. We show that a simple path independence property of average choice uniquely characterizes the Luce...
We introduce a model-based average reward Reinforcement Learning method called H-learning and compare it with its discounted counterpart, Adaptive Real-Time Dynamic Programming, in a simulated robot scheduling task. We also introduce an extension to H-learning, which automatically explores the unexplored parts of the state space, while always choosing greedy actions with respect to the current ...
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