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EMG multiplexor를 이용한 팔꿈치관절 굽힘동작의 생체역학적 분석
장성록 釜山工業大學校 1992 論文集 Vol.34 No.-
There are four flexor muscles at the elbow-biceps brachii, brachialis, brachioradialis, pronator teres. The objectives of this study are to investigate the variations of the recruitment patterns of the four muscles, and to analyze bionechanically the changes of the role assigned to each muscle during elbow flexion. The transition point of type f motor unit of each muscle is inferred by analyzing the electromyogram at the initial stage of exertion. Also, for predetermined exertion levels, the re cruitment pattern and changes of the role asigned are iedntified. It shoud be noted that an EMG multiplexor is developed and the four elbow flexors have been simultaneously measured with it.
A Study on Factors Influencing the Work Ability Index of Shipbuilding Industry Workers
장성록 한국안전학회 2009 한국안전학회지 Vol.24 No.6
The population over 65 years of age in Korea will be 10.3% of the entire population in 2008 indicating that Korea is already in an aging society. In addition, it is expected that Korea will be in an aged society in 2018 (population over 65 years of age : 14.3%) and that it will be in a post-aged society in 2026 (20.8%). Consequently, aged workers may also increase. It is well-known that the possibility to work longer and to live better is highly related to the work ability of individual. The objective of this study was to evaluate the work ability of each age group using the Work Ability Index(WAI) in the shipbuilding industry, and to assess the effects of social psychological stress, drinking characteristics, smoking characteristics, etc. on the WAI score. The results showed no significant difference on the effects of aging, drinking, and smoking characteristics. Interestingly, a statistical analysis on the effects of social psychological stress revealed a significant difference by stress levels. The difference of the average WAI score between the healthy group and the high risk group was about 10 points. Based on this result, it can be concluded that the stress level is an influential factor on WAI.
자극의 종류와 반응방법이 선택반응에 미치는 영향에 관한 연구
장성록 대한인간공학회 1994 大韓人間工學會誌 Vol.13 No.1
Automation and mechanization of work make people put the machine into operation and control the state of operation. In the process of those works they are apt to have accidents caused by their carelessness. To reduce such accidents, we can practice "TOUCH '||'&'||' CALL", which is to indicate and ascertain the dangerous parts at every process before performing tasks. The objectives of this study are to examine the effects of S-R compatibility and to show quantitatively the efficiency of TOUCH '||'&'||' CALL. The results show that: 1. Reaction time in case of indicating with fingers and shouting is slightly longer (0.138sec. .approx. 0.279sec. ) than that of responding only visually. However, the error rate decreases by 1/3.3 .approx. 1/4.2 times. Frome this, it is considered to verify quantitative estimation on multiple feedback of TOUCH '||'&'||' CALL. 2. In the stimulus-response relation aspect, numeric numeric stimulus-numeric response shows lower error rate (0.033% .approx. 0.133%) than any other stimulus-response relation, ahd shorter reaction time is proven ( 0.556sec. .approx. 0.835sec. ). These data suggest that having the order of stimulus-response arranged in accordance with the experimental knowledges and conceptional compatibility can bring down the error rate considerably.
선진국 안전보건교육제도 분석을 통한 우리나라 안전보건교육 정책방안
장성록,강종철,Jang, Seong-Rok,Gang, Jong-Cheol 대한인간공학회 2003 大韓人間工學會誌 Vol.22 No.1
This study is plan to show what kinds of problems we have and how we can overcome problems about occupational safety and health education and training system in Korea, Some features which advanced countries had were found and characterized as follows; First, advanced countries realized the importance of safety and health education on the role of preventing accident and they had varieties of training and education programs on the industrial safety and health for employer and worker. Second, there were many safety and health education programs and grants which especially focused to the small businesses. Third, they had also several programs to induce employer and worker's concerning about the safety and health education voluntarily, In conclusion, we introduced some inducing models, and proposed to revise contents of the education programs and to increase participation of other parties in safety and health education market so that could vitalize our safety and health education and training.