نتایج جستجو برای: crash modification factors

تعداد نتایج: 1201411  

Journal: :Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2008

2014
Kamran B. Lankarani Seyed Taghi Heydari Mohammad Reza Aghabeigi Ghasem Moafian Amin Hoseinzadeh Mehrdad Vossoughi

BACKGROUND Road traffic crashes are the third highest cause of mortality in Iran. The aim of this study was to determine the impact of roadway environmental factors on traffic crash. METHODS This cross-sectional study was conducted in Iran between March 21, 2010 and December 30, 2010. The data on road traffic crashes were obtained from the Traffic Police Department records. These records were...

2016
Mahdieh Rad Alexandra LC. Martiniuk Alireza Ansari-Moghaddam Mahdi Mohammadi Fariborz Rashedi Ardavan Ghasemi

BACKGROUND In the present study, the epidemiologic aspects of road traffic crashes in South East of Iran are described. METHODS This cross-sectional study included the profile of 2398 motor vehicle crashes recorded in the police office in one Year in South East of Iran. Data collected included: demographics, the type of crash, type of involved vehicle, location of crash and factors contributi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و فرهنگ - دانشکده مهندسی 1391

توزیع های چند متغیره، نقش مهمی در تئوری آمار وکاربردهای آن داشته است، بنابر این همواره مورد توجه محققان و دانشمندان علوم مربوطه بوده. نکته ی مهمی که بیشتر پژوهشهای محققان را به خود اختصاص داده، بدست آوردن و یا بررسی توزیع های چند متغیره بوسیله ی توزیع های حاشیه ای آنهاست. می دانیم که با داشتن توزیع مشترک، دستیابی به توزیع های حاشیه ای چندان مشکل نیست. اما در مورد ساختن توزیع مشترک و بررسی ویژگ...

Journal: :مجله علوم اعصاب شفای خاتم 0
johann gwehenberger azt automotive gmbh, allianz center for technology, munich, germany

advanced driver assistance systems (adas) have the potential to accomplish a major contribution to road safety. this is valid for minor crashes to very severe accidents with personal injuries. the allianz centre for technology attends the development of new driver assistance systems by carrying out accident analysis and estimating the efficiency of new adas. in this context new adas from differ...

1999
Dongran Ha Stephanie Szobota

This task has relied upon a combination of computer simulation and experimental testing. Computer crash simulation models were developed and validated for use in the study of factors influencing injury risk of wheelchair occupants in a crash. A wheelchair transportation-specific Injury Risk Assessment method was developed and used in the comparison of injury risk associated with various wheelch...

Journal: :Journal of Asian research 2023

This paper takes China Shanghai and Shenzhen A-share listed companies from 2007 to 2021 as samples empirically test the impact of major shareholder reduction on risk stock price crash. finds that shareholders promotes crash companies, is, compared with without shareholders’ reduction, is higher, this conclusion still holds after controlling conservative factors. Further examination shows shareh...

Stock price crash risk has a significant impact on investors, creditors, managers, and shareholders, so the prediction of this phenomenon is a very important issue in investment and risk management decisions. This research investigates the effect of business strategy and stock price synchronicity on stock price crash risk. Following Bentley et al.[2], composite strategy score has been used to ...

Journal: :Accident; analysis and prevention 2002
Asad J Khattak Aemal J Khattak Forrest M Council

Work zones in the United States have approximately 700 traffic-related fatalities, 24,000 injury crashes, and 52,000 non-injury crashes every year. Due to future highway reconstruction needs, work zones are likely to increase in number, duration, and length. This study focuses on analyzing the effect of work zone duration mainly due to its policy-sensitivity. To do so, we created a unique datas...

Journal: :Accident; analysis and prevention 2008
Jianming Ma Kara M Kockelman Paul Damien

Numerous efforts have been devoted to investigating crash occurrence as related to roadway design features, environmental factors and traffic conditions. However, most of the research has relied on univariate count models; that is, traffic crash counts at different levels of severity are estimated separately, which may neglect shared information in unobserved error terms, reduce efficiency in p...

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