نتایج جستجو برای: ergonomic evaluation of lifting activity

تعداد نتایج: 21269806  

Journal: :The Japanese journal of ergonomics 1993

2015
Jing Zhang Ke Chen Sheng-ping Du Yi-han Luo

Due to the existing image definition evaluation functions in auto-focus systems easily affected by noise, an image definition evaluation algorithm based on lifting scheme is proposed. The algorithm uses lifting scheme for wavelet decomposition, and adopts the energy value of high frequency components of wavelet decomposition as image definition evaluation function. Theoretical analysis and exte...

2014
JIRI SEVCIK

Particular functional blocks of Large-Scale Alarm receiving Centre modernization Design creates core contribution of this research paper. In the introductory chapter the valid legislation and the resulting requirements for the design, location, construction, technical equipment, operations and personnel are described. Moreover, the methodology of evaluation of the Alarm receiving Centre quality...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

Journal: :international journal of occupational hygiene 0
mohammad hossein beheshti department of occupational health, faculty of health, gonabad university of medical sciences, gonabad, iran zahra javan student research commite, gonabad university of medical sciences, gonabad, iran ghasem yarahmadi student research commite, gonabad university of medical sciences, gonabad, iran

introduction: musculoskeletal disorders are the major causes of occupational diseases in the work places and they are the most important cause of disability and absenteeism. for the prevention of these disorders and improvement of working, it is necessary to use ergonomics assessment techniques. this study aimed to assess ergonomic risk factors for musculoskeletal disorders in construction work...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1392

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

ژورنال: طب کار 2012
جواهری, مریم, حسینی‌نژاد, ، سیده فاطمه , داوری, محمد حسین , سلیمی, زینب, صالحی, مریم, مستغاثی, مهرداد, مهرپرور, امیرهوشنگ,

Abstract Background: Musculoskeletal disorders (MSDs) are caused by chronic and long-term exposure to ergonomic factors or by an acute injury. MSDs are the most important cause of work hour loss and medical costs in the workplace. In this study, ergonomic risk factors and frequency of MSDs of workers of an agricultural equipment-manufacturing plant were evaluated. Methods: In a cross-sectiona...

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