Construction joint ventures have attracted a lot of research interest over the last two decades. Joint venturing can allow participating companies to rapidly change the scale or scope of their businesses. However, joint ventures are often regarded as a risky business. The construction industry is associated with high degrees of risk in the nature of its business activities, operational environm...

  Background and Objective: Long period risk of gastric carcinoma in people affected with chronic Helicobacter pylori gastritis is 5 times more than normal people. Perhaps histological changes due to helicobacter pylori infection could be used for screening people at risk of gastric carcinoma and peptic ulcer. Materials and Methods: This study has been carried out as a cross...

one of the most important impact of climate change is reduction of precipitation in some areas including iran. hence, climate change studies are essential in these areas. besides, according to ipcc, some meteorological stations of iran, such as tabriz (capital of east azerbaijan province) have showed a downward trend in precipitation. therefore, east azerbaijan province was selected as the stud...

Previous research in the field of product innovation management has focused on large firms. This is unfortunate because small and medium-sized enterprises (SMEs) have features that clearly distinguish them from their larger counterparts and also play an important role in the global economy. In addition, SMEs often have more varying control of the whole innovation process – from identification o...

Background: There are many controversies about the frequency and burden of suicidality in patients with Obsessive-Compulsive Disorder (OCD). Objectives: This study was done to determine the prevalence and risk factors of current suicidal ideations in patients with OCD. Materials & Methods: In this cross-sectional study, 258 outpatients with OCD (Yale-Brawn Obsessive Compulsive Scale, Y-BOCS ≥...

abstract using tobit model, this study investigated factors affecting on crop risk frequency of farmers in the north khorasan province. data was collected through interviewing 120 farmers of north khorasan province in 2008. results showed that age, farm ownership and off farm employment affected frequency of risk negatively. non-agricultural activity, participating in a crop supervisory plan an...

In this paper I use the smooth ambiguity model developed by Klibanoff, Marinacci, and Mukerji (2005) to define the concepts of ambiguity and uncertainty premia in a way analogous to what Pratt (1964) did in the risk theory literature. I show that those concepts may be useful to quantify the effect ambiguity has on the welfare of economic agents. I also provide local approximations of these prem...

We provide an accurate closed-form expression for the expected shortfall of linear portfolios with elliptically distributed risk factors. Our results aim to correct inaccuracies that originate in Kamdem (2005) and are present also in at least thirty other papers referencing it, including the recent survey by Nadarajah et al. (2014) on estimation methods for expected shortfall. In particular, we...

There are several terms that identify proposed paradigms for the way things ought to be carried out in the health sciences: evidence-based, cause-and-effect, diagnostic gold-standard, patient-centred-outcomes, risk assessment, cost/benefit/risk, and efficacious/effective. Collectively these paradigms exhibit varying degrees of interdependence, and have the potential for changing the way dentist...