• 한국안광학회지
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• 제17권2호
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• pp.177-184
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• 2012

목적: 본 연구에서는 개인용 컴퓨터로 일정 시간동안 연속적으로 게임을 할 때 안구의 주 운동방향이 조절과 관련된 시기능에 미치는 영향을 알아보고자 하였다. 방법: 안질환 및 조절기능의 이상이 없고 교정시력이 1.0이상이 되는 20대 60명을 대상으로 40분 및 90분 동안 연속적으로 수평방향의 게임과 수직방향의 게임을 각각 시행하도록 한 후 조절력, 조절용이성, 상대조절 및 조절래그 값을 측정하였다. 동일 시간동안 게임을 시행하지 않았을 때를 대조군으로 하여 시기능 값을 비교, 분석하였다. 결과: 게임을 하지 않은 대조군의 조절관련 시기능 검사 값에 비하여 40분 동안의 컴퓨터 게임 후 최대조절력, 조절용이성, 조절래그 및 상대조절은 모두 감소하는 경향을 보였으며, 상대조절을 제외하고는 90분으로 컴퓨터 작업시간을 연장하였을 경우 더욱 감소된 값을 나타내었다. 양성상대조절은 90분 동안의 컴퓨터 게임 후 약간 증가하는 경향을 보였다. 한편, 컴퓨터 게임 시 안구의 주 운동 방향에 따른 시기능의 변화는 수직방향으로의 안구운동보다는 주로 수평방향으로의 운동에 의한 조절기능의 감소가 큼을 알 수 있었다. 결론: 컴퓨터 게임을 통한 VDT 작업의 시간이 길어짐에 따라 전반적인 조절기능의 능력이 감소하는 경향을 보였으며, 수직방향보다는 수평방향으로의 안구이동이 VDT 작업 시 조절기능의 변화에 크게 영향을 주므로 VDT 작업 시 수평방향으로의 잦은 안구이동은 안정피로의 주 원인이 될 것으로 생각할 수 있었다.

• 한국안전학회지
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• 제23권2호
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• pp.30-36
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• 2008

This paper suggests the best work conditions, including short break time and number of mouse clicks on a computer, to prevent MSDs(Musculoskeletal Disorders) on VDT(Visual Display Terminal) work. Discomfort measures are calculated according to the Borg's CR-10 Scale. The short break time conditions are grouped into 7, 15, and 30 seconds after every 10-minute work period and the number of mouse clicks are divided into 10 clicks/min, 20clicks/min, and 30clicks/min. The result of the ANOVA on the shift value of subjective discomfort shows the following: 1) Regarding the break time and the number of mouse clicks, there are statistical differences between the measured values for the neck and the wrist(p<0.05). 2) Regarding the number of mouse clicks, there are statistical differences between the measured values for the shoulder and the forearm(p<0.1). 3) Regarding the break time and the number of mouse clicks, there are no statistical differences between the measures values for the eyes, upper arms and back(p<0.1).

• 한국환경교육학회지:환경교육
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• 제23권3호
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• pp.140-151
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• 2010

The purpose of this study was to develop the educational program using learning cartoons for the environmental health and to examine the educational potentials of it. The subjects were 4th grade students of an elementary school in Gyeonggi province. The topics of environmental health learning program were obesity, atopicallergy, VDT syndrome, sick house syndrome and eco-friendly living supplies. The environmental health knowledge of the experimental group was significantly higher than that of the control group(p<.01). Especially, the topics of VDT syndrome and sick house syndrome were effective(p<.01). Girls' environmental health knowledge about VDT syndrome was higher than that of boys(p<.05). The environmental health practice will of the experimental group was significantly higher than that of the control group(p<.01). The students of experimental group have significant higher practice will about VDT syndrome and sick house syndrome. Girls' environmental health practice will about obesity and eco-friendly living supplies were higher than boys' will. The results showed that the learning program using learning cartoons have effective educational potentials in the environmental health education.

• 대한인간공학회지
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• 제26권4호
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• pp.41-47
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• 2007

This paper suggested the best work conditions including short break time and the number of mouse clicks on the computer work for the prevention of MSDs on VDT work. Fatigue measures included EMG based parameters. The short break time conditions are grouped into 7, 15, and 30 seconds after every work for 10 min and the number of mouse clicks are divided into 10, 20, and 30 clicks/min. The result of the ANOVA of the shift value of %MVC(Maximum Voluntary Contraction) showed the following: 1) There was a considerable difference as regards to the break time except the number of mouse clicks on the upper trapezius muscle(p$<$0.05). The best conditions were shown in 15 sec after every 10 min and 30 clicks/min. 2) There were considerable differences as regards to the number of mouse clicks except the break time on the extensor digitorum muscle and extensor carpi ulnaris muscle(p$<$0.05). The best conditions were shown in 7 sec after every 10min and 10 clicks/min.

• 대한산업공학회지
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• 제16권1호
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• pp.67-81
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• 1990

Effectiveness of physical exercise in reducing work-related musculoskeletal stress was investigated. This was compared to the stress alleviation accomplished by using ergonomically designed work station. Tasks chosen for the study were data entry and file maintenance on the video display terminal (VDT). Three different measures, namely root-mean-square (RMS) values of electromyogram (EMG), subjective rating and task performance were used for the evaluation. Electromyograms were recorded from the neck, the left and right trapezius muscles in the shoulder region, and L2/L3 region of the back. Subjects rated discomfort levels for the same parts of their body. Task performance was measured by recording typing speed and errors. Each of the five subjects was tested for two days (8 hours/day) in two different work stations. These were the ergonomically designed adjustable work station and the fixed work station of traditional design with no adjustable features. Assigned physical exercises were performed for four minutes, every two hours during the breaks, by the subjects while working in the fixed work station. It was concluded that the physical exercise could be helpful in reducing musculoskeletal stress as effectively as the ergonomic design of the VDT work station.

• 대한간호학회지
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• 제43권4호
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• pp.526-535
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• 2013

Purpose: This study was done to compare clinical nurses' knowledge and visual differentiation diagnostic ability for the pressure ulcer classification system (PUCS) and incontinence-associated dermatitis (IAD). Methods: A convenience sample of 602 nurses took the pressure ulcer classification system and incontinence-associated dermatitis knowledge test (PUCS & IAD KT) and completed the visual differentiation tool (VDT), consisting of 21 photographs with clinical information. Results: The overall mean score for correct answers was 14.5 (${\pm}3.2$) in PUCS & IAD KT and 11.15 (${\pm}4.9$) in PUCS & IAD VDT. Incorrect responses were most common for statements related to stage III, IAD for PUCS & IAD KT, and suspected deep tissue injury (SDTI), unstageable, and stage III for PUCS & IAD VDT. Significant correlations were found between PUCS & IAD KT and VDT (r=.48, p<.001). Factors affecting scores for PUCS & IAD VDT were PUCS & IAD KT, frequency of pressure ulcer, IAD management and participation in wound care education programs. Conclusion: Results indicate that nurses have an overall understanding of PUCS & IAD, but low visual differentiation ability regarding stage III, SDTI, and unstageable ulcers. Continuing education is needed to further improve knowledge and visual differentiation ability for PUCS & IAD.

• 대한예방의학회:학술대회논문집
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• 대한예방의학회 2005년도 제57차 추계 학술대회 연제집
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• pp.453-453
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• 2005

• 한국산업안전학회:학술대회논문집
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• 한국안전학회 1997년도 춘계 학술논문발표회
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• pp.133-138
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• 1997

인간공학 및 생체공학을 근거한 종합적인 연구 모델 제시로, 산업체에 산재해있는 작업 중에 VDT Workstation과 관련된 근로자의 상지에 대한 직업성 누적적 질환의 연구로, 상지의 외상성 누적적 질환을 일으킬 수 있는 ergonomic stressor의 감지, 진단, 및 공학적 control를 이용 직업성 누적적 질환 예방을 궁극적 목적으로 하여, 근무 교대 및 일시적 보직 변경 등 근무 순환의 적절한 인사관리 및 누적적 피로를 극소화 할 수 있는 근무/휴식의 적절한 시간 안배를 제시하며, VDT 주변 환경과 근로자 사이의 적절한 운용에 대한 교육 program을 개발, 또한 휴식 시 stretch exercise (근육의 피로 이완을 목적) 방법 등을 제시하며, 누적적 질환의 조기 증상을 감지하여 업무의 적절한 순환을 통하여 직업성 질환으로서의 발전을 방지하고자 하는 것을 취지로 기초연구를 수행하고자 하였다. (중략)

• 산업경영시스템학회지
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• 제25권1호
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• pp.71-77
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• 2002

This study deals with noise occurring in the process of human information transmission. Human process many kinds of information by receiving them from the outside or using their own thought and express the processed information to the outside by acting. In this process, Channel Noise ($C_N$) is defined as the characteristics of noise generating the incomplete result for the external stimulus. To evaluate $C_N$, keyboard-typing experiment has been performed to the 87 subjects. In this experiment, the subject consists of college students who have abundant experience in computer usage. In the experiment, there were some cases that typing order was unconsciously reversed. In this study, we deal with only these cases since these cases can be used as important data to study humans information transmission system.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1996년도 추계학술대회논문집
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• pp.3-6
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• 1996

Cumulative trauma disorders (CTDs) are becoming a major health hazard among phone directory service operators. In order to clarify the causes and to reduce the occurrence of CTDs, a site survey was done. The survey includes observation of the task and the working environment. Also, operators were closely examined and diagnosed to understand the exact causes of CTDs. Different types of CTDs were identified and the most cases were developed in a two or three-years after using new VDT-based workstations. The various design features of workstation aggravated the developemtn of CTDs together with the intense workload. The ergonomic resolutions were suggested based upon these observations.