the presence of yield systematic risk in agricultural sector is one of the main reasons for facing this sector with huge damages and is one of the restricting factors in developing agricultural insurance in iran. this study explores the presence of systematic yield risk and the extent and severity of yield spatial dependence for apple production in iran. to this end, the apple production region...

We decompose time-varying beta for stock into beta for continuous systematic risk and beta for discontinuous systematic risk. Brownian motion is assumed as nature of price movements in our modeling. Our empirical research is based on high-frequency data for stocks from Tehran Stock Exchange. Our market portfolio experiences 136 days out of 243 trading days with jumps which is a considerable rat...

It is necessary to evaluate progress in the area of patient safety. However, although there has been an increase in number of quality and safety related studies have increased, the topics of patient involvement and patient safety are not automatically linked. The aim of this systematic review was to identify and evaluate the evidence contributed by studies of patient involvement in the provisio...

Many standards exist to guide the process of risk assessment, particularly in the field of information security. This leads to many, subtly different, definitions of risk analysis, evaluation and assessment. Consequently, researchers often confuse these terms and disciplines, which leads to further confusion within the community. In this sense, it is important to come to a common understanding ...

Constipation is a common experience for a wide range of client groups. However, it is often badly managed, and research into effective treatment of constipation is sparse. This article summarises a systematic review carried out for the NHS health Technology Assessment programme. There is some evidence that laxatives can improve frequency and consistency of defecation and symptoms in older peopl...

The digital transformation is still a protean concept, whose acceptances differ between practitioners and researchers. After a systematic literature review to clarify the definition and dimensions of this topic, we conducted an exploratory qualitative study to better understand the stakes and impacts of the digital transformation of businesses. Our first results show that digitalization represe...

the purpose of this study is to determine spatial dependency pattern of systematic risk of dry land wheat production in iran, using spatial autoregressive models. to this end, spatial weighted contiguity matrix was constructed based on the delaunay triangularization method, and correlation coefficient among these neighbors were estimated using spatial autoregressive models. in addition, the rol...