the efficiency of three statistical models, ahp surface-weighted density bivariate (semi-quantitative models), stepwise multivariate regression and logistic multivariate regression models were compared in chehel-chai watershed in golestan province, iran. in current study the hazard map was prepared according to the top model of landslide hazard map. chehel-chai watershed is located as one of go...

Wind erosion is a major environmental issue affecting land resources and socio-economic settings in Iran. This paper outlines a study undertaken to provide a new tool to manage wind erosion from physical and economic perspectives. The southern part of the Varamin Plain in south of Tehran is used as a case study. The focus of this study is on exploring the economic and physical impacts of 16 veg...

In this paper, a joint hazard-based model is proposed to analyze simultaneous (mutually interdependent) duration processes. The proposed model generalizes independent hazard based models by accounting for correlations between simultaneous duration processes. Further, the model also permits flexible and variable hazard function parameters to capture realistic features observed empirically in act...

An extensive literature shows that agency issues and transactions costs influence vertical integration. Another mature literature indicates that market structure influences competitive behavior. However, less consideration has been given to how vertical integration and market structure may interact. I address this gap by focusing on the potential for moral hazard caused by intra-firm competitio...

Extreme events, by definition, cause much harm to people, property, and the natural world. Such events can result from the vagaries of nature (floods or earthquakes) or from technological failure or unintentional human error (Chernobyl or Bhopal). More recently we have witnessed another form of extreme hazard, resulting from terrorism. This paper examines the complex interplay between emotion a...

The level of occupational health and safety management depends upon the scope of the industry as it varies according to the functions and scale. Designing the occupational health and safety management system for the small scale industries is more challenging due to their limited resources and other constraints. The basic groundwork for the proper implementation of occupational health and safety...

This paper examines the determinants of individual bank failures and acquisitions in the United States during 1984-1993. We use bank-specific information suggested by examiner CAMELrating categories to estimate competing-risks hazard models with time-varying covariates. We focus especially on the role of management quality, as reflected in alternative measures of xefficiency and find the ineffi...