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임승길(Seung Kil Lim) 한국사회체육학회 2011 한국사회체육학회지 Vol.0 No.45
The purpose of this study was to verify the difference in physical fitness according to level of fear of falling in elderly male. The subjects were composed of 124 elderly male(aged 65-97) who have not falling history. Subjects were divided into three groups: 1) high K-SAFFE group, 2) middle K-SAFFE group, 3) low K-SAFFE group. Fear of falling was measured with Korean survey of activities and fear of falling in the elderly(K-SAFFE) questionnaire(Cronbach`s <=.763). Physical fitness was assessed by measuring upper and lower extremity strength, aerobic endurance, upper and lower extremity flexibility, agility and dynamic balance, static balance. In order to analyze collected data, ANCOVA was utilized. The statistical significance was accepted at .05 levels. The results were as follows: Age affect upper extremity strength, lower extremity flexibility, agility and dynamic balance, static balance(p<.05). Upper extremity strength, agility and dynamic balance of the low K-SAFFE groups were significantly higher than the high K-SAFFE group(p<.05). Lower extremity strength of the low K-SAFFE groups were significantly higher than the high and middle K-SAFFE group(p<.05). Aerobic endurance(p<.05) and upper lower extremity flexibility(p<.01) of the low and middle K-SAFFE group were significantly higher than the high K-SAFFE group. In conclusion, high level of fear of falling, even though have not falling history, has been associated with decreased physical fitness of elderly male.
임승길(Seung Kil Lim),박진홍(Jin Hong Park),남종철(Jong Chul Nam),박정규(Jung Gue Park),한경진(Kyung Jin Han),조종현(Jong Hyun Cho) 한국사회체육학회 2007 한국사회체육학회지 Vol.0 No.30
PURPOSE: This study was designed to create a job description for performance frequency, importance, and difficulty of task elements. And to create an effective curriculum for Korea athletic trainers. METHOD: DACUM workshop involves a trained DACUM facilitator, a coordinator, 2 observers, 2 recorders and a committee of 8 expert workers from field of athletic training. 34 subjects which are necessary in the field of athletic training have been selected by the DACUM analysis. The sample consisted of 34 athletic trainers who performed duties related to athletic training. A survey method was used, and the questionnaire included frequency, importance, and difficulty of task elements in job descriptions using the DACUM method. Using SPSS WIN 12.0, descriptive statistics such as frequency distribution, means, and standard deviation were conducted to examine the subject`s general characteristics, frequency, importance, and difficulties of task performance. RESULT: The job description of athletic trainers revealed 10 duties, 9 tasks, and 61 task elements. On all ten duties, the average performance importance, and difficulty was 3.91, and 2.95 respectively. CONCLUSION: The job description of athletic trainers includes duty, task, and task elements and the definition of a completed job. Thus we recommend a data based trial to confirm and validate the information gathered. The competition of department can be improved, if the result of this research is adapted to the department curriculum related to field of athletic training.
우편 발송 비용 최소화를 위한 상엽용 다량 우편물 선구분 적재
임승길(Seung-Kil Lim),김재곤(Jae-Gon Kim),신용호(Yong-Ho Shin) 한국산업경영시스템학회 2013 한국산업경영시스템학회지 Vol.36 No.1
We consider a problem of presort and loading of commercial bulk mails in a mailing service. Here, presort is the process by which a mailer prepares mail so that it is sorted to at least the finest extent required by the mailing service provider for the (discounted) price claimed. The problem is formulated as a special type of transportation problem. To solve industrial-sized problems, we develop an efficient heuristic algorithm and perform experimental tests on randomly generated problem instances. Results of the tests show that mailers can save mailing cost much more when they use small-sized mail trays with less frequent mailings. Also, large-sized mailers can obtain much more cost saving than small-sized mailers. In addition, cost saving effect is influenced by delivery area distribution of mails and fluctuation of mailing demand.