نتایج جستجو برای: crash
تعداد نتایج: 9632 فیلتر نتایج به سال:
BACKGROUND Crash helmet plays an important role in protecting the deriver's head during crashes and reduces the rate of severe injuries and fatalities. Although it has been proved that wearing the crash helmet can save the deriver's life by around 42%; previous studies showed that the rate of wearing crash helmet has not been acceptable in Iran. Due to the huge number of motorcyclists on the ro...
Research into the application of freeway loop detector data for traffic safety has gained momentum in recent years. The incompleteness of data from loop detectors has been a common problem in both the development and the implementation of models. The effect of individual crash precursors, obtained one at a time from a series of loop detectors, on relative risk of crash occurrence was examined t...
IMPORTANCE Short sleep duration is common in adolescents and young adults, and short sleep duration is a risk factor for motor vehicle crash. OBJECTIVE To assess the association between hours of sleep and the risk for motor vehicle crash, including the time of day of crash and types of crash (single, multiple vehicle, run off road, and intersection). DESIGN Prospective cohort study. SETTI...
BACKGROUND Road traffic injuries are a major public health problem, especially in low- and middle-income countries. Post-crash management can play a significant role in minimizing crash consequences and saving lives. Iran has one of the highest mortality rates from road traffic injuries in the world. The present study attempts to fill the knowledge gap and explores stakeholders' perceptions of ...
هدف این مقاله مطالعهی تأثیر برخی ویژگیهای کیفی حسابرسی بر ریزش قیمت سهام در شرکتهای پذیرفته شده در بورس اوراق بهادار تهران است. اطلاعات مورد نیاز برای این پژوهش از صورتهای مالی 81 شرکت در دورهی زمانی 1393-1389 گردآوری شده است. در این پژوهش کیفیت حسابرسی از طریق معیارهای تخصص حسابرس در صنعت، دورهی تصدی حسابرس، استقلال حسابرس و اندازهی موسسهی حسابرسی اندازهگیری شده است. یافتههای حاصل از...
This paper investigates the parametric study of the empty and foam-filled end-capped tubes under quasi static and dynamic loadings. The numerical crash analysis of the empty and foam-filled tubes was performed using the explicit finite element code ABAQUS- explicit. Satisfactory agreements were generally achieved between the numerical and experimental results. In order to determine the crash be...
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An immediate snapshot object is a high level communication object, built on top of a read/write distributed system in which all except one processes may crash. It allows each process to write a value and obtains a set of pairs (process id, value) such that, despite process crashes and asynchrony, the sets obtained by the processes satisfy noteworthy inclusion properties. Considering an n-proces...
This paper presents Scrash, a system that safeguards user privacy by removing sensitive data from crash reports that are sent to developers after program failures. Remote crash reporting, while of great help to the developer, risks the user’s privacy because crash reports may contain sensitive user information such as passwords and credit card numbers. Scrash modifies the source code of C progr...
This paper describes a method of comparing two acceleration time histories to determine if they describe similar physical events. The method can be used to assess the repeatability of full-scale crash tests and it can also be used as a criterion for assessing how well a finite element analysis of a collision event simulates a corresponding full-scale crash test. The method is used to compare a ...
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