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...

The aim of this study was to describe personal assistants’ risks for harmful effects in client transfer situations at work. Observation and assessment of their working postures in transfer situations were performed by the Swedish ergonomic regulations concerning “red flags” (AFS 1998:1), by video recordings and by biomechanical analysis. The results showed that among eight home care assistants,...

The paper presents the results of radiation risk assessment for staff a nuclear power plant design during basis accident (spent fuel assembly falling on in reactor core or storage pool refueling operations) and beyond (large leakage primary coolant with failure active part emergency cooling system complete blackout 24 h). is based state-of-the-art models from United Nations Scientific Committee...

The relevance of the psychophysiological aspect stress tolerance in professional activities law enforcement officers arises and manifests itself connection with high risk mistakes non-ordinary situations, as well development an algorithm for assessing prognostic parameters employees.

The bystander intervention approach is gaining popularity as a means for engaging communities in sexual assault prevention, especially on college campuses. Many bystander programs are teaching community members how to intervene without first assisting them to identify the full range of opportunities when they can intervene. In this article, the authors review the literature on sexual violence b...

The first step in improving traffic safety is identifying hazardous situations. Based on traffic accidents’ data, identifying hazardous situations in roads and the network is possible. However, in small areas such as intersections, especially in maneuvers resolution, identifying hazardous situations is impossible using accident’s data. In this paper, time-to-collision (TTC) as a traffic conflic...

In this paper, we will briefly review the problem of IDS and IPS performance evaluation, demonstrating how flawed current approaches to evaluation are, both in academia and in the industry. We will show all the issues in current testing methodologies, as well as key reasons to distrust claimed performance rates of current IDS systems. We will also show how practical testing architectures can be...

We examined the unique contributions of depression, anxiety, and anxiety sensitivity (AS) in predicting frequency of drinking in different high-risk situations among 60 women receiving treatment for alcohol problems. Participants completed the Beck Depression Inventory-II, Beck Anxiety Inventory, Anxiety Sensitivity Index, and Short Form Inventory of Drinking Situations (IDS-42). Together, the ...