علی محمدی, ایرج
دانشکده بهداشت
[ 1 ] - مطالعه تاثیر صدای ترافیک بر عملکرد شناختی رانندگان
Background and aims:Traffic noise is one of the most important environmental pollutants. World health organization has determined the health effects of community noise including cognitive performance disorders. The aim of this research is the study of effects of road traffic noise on peripheral perception and choice reaction time performance drivers.methods: thirty and five students from the fa...
[ 2 ] - بررسی علل بی‌نظمی در برگزاری کلاس های آغاز هر نیمسال تحصیلی از نگاه کارشناسان آموزشی
Introduction: Irregularity or delay in the beginning of classes at each semester, due to absence of students and/or professors, is a common problem in most Iranian universities. This study aimed to investigate the reason for irregularities at the beginning of each semester according to the viewpoints of educational experts. Method: This cross-sectional study was carried out at three universiti...
[ 3 ] - بررسی اثر صدا بر فشار خون و ضربان قلب کارگران در یک صنعت خودروسازی
Introduction: One of the possible effects of occupational exposure to high noise is high blood pressure and cardiovascular disease. Aim of this study was to investigate the association between noise with blood pressure and heart rate in an automotive industry. Methods: 78 male workers who worked in an automobile factory, were participated. Blood pressure and heart rate were measured in the m...
[ 4 ] - روایی و پایایی مقیاس پندار ذهنی و مقیاس اصلاح شده کوپر-هارپر در اندازه گیری بار کاری ذهنی
Introduction: High mental workload is one of the important factors that results in errors in safety and occupational health scope and its measurement has high importance. So, this study aimed to determine validity and reliability of Verbal Online Subjective Opinion (VOSO) and Modified Cooper-Harper (MCH) scales in measuring mental workload. Methods: This study was conducted on 90 male studen...
[ 5 ] - مدل سازی مواجهه صدا در رانندگان اتوبوس های شرکت واحد تهران به روش شبکه عصبی
Abstract: Background: Many parameters effect on the noise exposure of bus drivers, which can be noted the bus type, where the engine, fuel type, age of buses and speed. The object of this study is the neural network modeling of noise exposure in Tehran bus transportation drivers. Material and Methods: Noise levels in 90 buses were sampled in three separate sub-sample including (1)30...
[ 6 ] - بررسی و مقایسه سیاست های انقباضی منابع انسانی بر روند شاخص حوادث در دو صنعت شرکت باتری سازی در بازه پنج ساله (1393-1389)
Introduction: Today's macro-organizational policies and decisions are significantly associated with the safety management system, therefore, any organizational intervention may lead to a change in the trend of factors affecting accident indicator. In current research, Spastic policy on the human resources on trend of accident indicator in two industries in the field of battery making in a five ...
[ 7 ] - ارتباط پرخاشگری با میانگین سرعت و انحرافات عرضی در رانندگان تاکسی شهر تهران
Background and aims: Speeding and deviation to the left and right are the most notable and important causes of injuries that caused by traffic accidents in most countries. Injuries caused by these events are so great that it will be remembered as a war on the road. Due to the importance of the relation between aggression, errors and violations, this study aimed to investigate the relationship o...
[ 8 ] - Survey of gender effect on driving performance and mental workload of Young Drivers using a driving simulator
Background and aims: Road traffic accident annually lead to the death of 1.2 million people and also the disability of some 50 million people in the world. Iran is one of the countries with the highest rates of road accidents in the world. According to the annual statistics by the Iranian Legal Medicine Organization, 15,932 people have lost their lives in road traffic accidents in 1395 sh. Acco...
[ 9 ] - Design a questionnaire to survey Knowledge, Attitude and Practice (KAP) of printing industry workers Regarding to Hearing Protection and determining its validity and reliability
Introduction: In many countries, the noise has been ranked among the important risk factors in the printing industries. The purpose of this study is to design a tool for Assessing the level of knowledge, attitude and practice of the printing industry workers in the field of hearing protection and determining its validity and reliability. Methods: To design a questionnaire, 35 questions were pr...
[ 10 ] - Investigating the effect of different light intensities in work environments on Circadian rhythm using animal model
Introduction: light intensity and duration are physical factors that affect hormone secretion and circadian rhythms. This study aimed to determine the effects of various light intensities on serum melatonin and cortisol levels. Materials and methods: This experimental study was carried out on 32 male rats: Group 1 as the control group, received a brightness of 150 lux, and groups 2, 3, and ...
[ 11 ] - Survey the effect of texting on driving performances using drivers driving a Simulator
Introduction: There is evidence that driver distraction is one of the major causes of vehicle accidents. One of the key factors that can affect people's driving performance drastically, is texting. Therefore, the purpose of this study is to determine the effects of texting on driving functions using a driving simulator. Methods and Materials: This study was conducted on 80 students ranging fro...
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