The present study aims to investigate the effects of macroeconomic variables on stock price crash risk in economically uncertain conditions Iran’s market. This also seeks examine whether there is a significant relationship between some firm characteristics and falling prices. sample includes 152 Iranian companies listed Tehran Stock Exchange (TSE) 2014 2019. Furthermore, research model has been...

In-depth, retrospective accident investigation studies provide a means to understand how car occupants are injured in road traffic accidents. In most retrospective studies, crash severity is estimated using the CRASH3 computer program. capable of crash severity assessment, PC-CRASH is more focused on accident reconstruction, and is therefore not discussed in this paper. AiDamage is a crash seve...

The development of automotive safety systems is moving towards an integration of systems that are active before and during an impact. Consequently, there is a need to make a combined analysis of both the pre-crash and the in-crash phases, which leads to new requirements for Human Body Models (HBMs) that today are used for crash simulations. In the pre-crash phase the extended duration makes the...

BACKGROUND AND OBJECTIVE Early high school start times (EHSST) may lead to sleep loss in adolescents ("teens"), thus resulting in higher crash rates. (Vorona et al., 2011). In this study, we examined two other adjacent Virginia counties for the two years subsequent to the above-mentioned study. We again hypothesized that teens from jurisdictions with EHSST (versus later) experience higher crash...

We did a retrospective case control study to examine the relationship between the risk of dying for Michigan motor vehicle crash (MVC) drivers and the type of county (rural/nonrural) of crash occurrence, while adjusting for crash characteristics, age, sex, and the medical resources in the county of crash occurrence. The 1987 Michigan Accident Census was used to obtain data regarding all MVC dri...

While roundabouts are still fairly new in the U.S. and Wisconsin, their safety benefits have been studied with varied results. For this study, researchers analyzed 24 Wisconsin roundabouts that were built in 2007 or before. Three years of before and after crash data were gathered as well as geometric and volume data. An Empirical Bayes (EB) analysis was used to examine the safety benefits for t...

BACKGROUND Tranexamic acid prevents blood clots from breaking down and reduces bleeding. However, it is uncertain whether tranexamic acid is effective in traumatic brain injury. The CRASH-3 trial is a randomised controlled trial that will examine the effect of tranexamic acid (versus placebo) on death and disability in 13,000 patients with traumatic brain injury. The CRASH-3 trial hypothesizes ...

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Résumé. Dans cet article, nous présentons la démarche adoptée dans le projet LISE pour spécifier de manière formelle les responsabilités des parties dans un contrat portant sur des logiciels. Nous décrivons deux options, l’une reposant sur une attribution a priori des responsabilités en fonction des dysfonctionnements constatés dans les logs, l’autre sur une analyse de causalité, et nous les il...