• 대한인간공학회지
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• 제7권2호
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• pp.3-13
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• 1988

For health and welfare of VDT workers in VDT tasks, there has been serious efforts to establish guidelines for VDT tasks in several countries. In this study the author reviewed those guidelines and related researches in relation to health problems of VDT tasks and then suggested some minimal conditions or some key items of VDT task dimensions to protect VDT workers in performing their VDT tasks.

• 대한인간공학회지
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• 제16권1호
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• pp.85-96
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• 1997

This article reviews the effects of VDT tasks on multiple resources for processing and storage in short-term working memory. MD and PD method were introduced toevaluate the modalities (auditory-visual) in the multiple resources model. The subjects conducted 2 sessions of 50 minites VDT tasks. Before, between and after VDT tasks, MD, PD task performance scores and CFF(critical flicker frequency0 values were measured. The review suggested that the modalities of human information processing in working memory were affected by VDT tasks with different task contents.

• 대한인간공학회지
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• 제11권1호
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• pp.21-29
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• 1992

A study on analyze the effect of positive and negative contrast for user performance on the VDT tasks);text typing, text deiting, and searching task) has been performed. The performances were measured in terms of the completion time and the number of errors. The results of each VDT task are followings. In the text typing task and the searching task, the performances measured by the number of errors were better at the condition of negative contrast than at that of positive contrast. In the text deiting task, the performance showed a reverse tendency.

• 대한산업공학회지
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• 제32권3호
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• pp.236-241
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• 2006

Monitor height is one of the key factors in the VDT workstation design. Most of the previous studies have focused on traditional VDT workplace where the operators performed data entry or word processing tasks using single monitor. This study aimed to suggest proper monitor height when the main task was monitoring information from different number of information sources. Twelve male students participated in three experiments: single information source (one monitor), two information sources (one monitor and one CCTV), and three information sources (one monitor, one CCTV and a window). Subjects performed monitoring tasks for 10 minutes with 3 different monitor center heights : 89.0 cm (Low), 111.3 cm (Middle), and 124.8 cm (High). Surface EMG signals of five neck muscles, subjective discomfort ratings, preference, and working postures were recorded. Results indicated that the middle height was proper for one monitor condition, but the low monitor height was recommended for more than two information sources.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1996년도 춘계학술대회논문집
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• pp.191-199
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• 1996

단순 VDT 작업에 의한 인간의 시각정보처리에의 영향을 살펴보기 위하여 특히 서로 다른 model에 대한 정보처리에의 영향을 조사하였다. 피험자는 시각감시 작업과 데이타입력작업을 각각 50분씩 2회 수행하였고 서로 다른 model에 대한 영향을 살펴보기 위해 적업 전, 중 ,후에 걸쳐 MD 및 PD 방법에 의한 과제가 실 시되었다. 실험결과, 단순 VDT 작업이라고 하더라도 작업 수행 내용의 차이에 따라 서로 다른 model에 대한 정보처리에의 영향이 다르게 나타날 수도 있다는 점이 시사되었다.

• International Journal of Safety
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• 제7권1호
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• pp.35-38
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• 2008

The purpose of this study is to extract typical body shape of Korean VDT workers based on the three-dimensional Korean shape data and recommendation supported by Korea Occupational Safety & Health Agency during VDT task. Desirable desk heights and chair heights for the selection of the VDT working posture is proposed by analyzing moment, compression and joint shear for lumbar and spine of Korean adult(male and female). The desirable heights for desk and chair can be selected by the least load method during VDT tasks. In the current work the figures of Korean 50th percentile offered by CATIA-HUMAN are used as the average body type of the grown-ups and this research is accomplished with the recommended size of all working attitude such as the height of a monitor except for the height of desk and chair and the degree of watching the monitor.

• 실천공학교육논문지
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• 제16권2호
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• pp.115-119
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• 2024

ICT 산업 종사자 수의 증가에 따라 VDT 증후군 예방을 위한 연구가 요구되고 있다. 기존의 자세 교정 제품들은 대부분 카메라 의존도가 높거나 웨어러블 기기의 센서에만 의존하고 있다. 본 논문에서는 내장 카메라와 원형 압력 센서를 활용하여 자세 정보를 수집하는 자세 교정 시스템을 개발하였다. 또한 초기 사용자의 '바른 자세'를 입력받고 이를 기반으로 사용자의 자세를 모니터링하는 맞춤형 서비스를 제공한다. 본 시스템은 사용자의 일상 업무 중 자세를 정밀하게 교정함으로써 VDT 증후군을 예방 및 개선하며 최종적으로 ICT 산업 종사자의 업무 효율 향상을 기대할 수 있다.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1995년도 추계학술대회논문집
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• pp.109-113
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• 1995

This study was designed to investigate the effects of work postures and anthropometry on the musculoskeletal discomfort of the telephone operators involved in VDT tasks. The level of musculoskeletal discomfort were evaluated for 279 VDT operators from three different workplaces. The work postures and the anthropometric data were evaluated for 70 VDT operators out of the total of 279 operators. Multiple regression analysis was utilized to examine the relation- ship between the measured ergonomic variables and the level of the musculoskeletal discomfort. It is evident from the result of the study that the ergonomic factors have great influences on the level of the musculoskeletal discomfort.

• 대한안전경영과학회지
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• 제4권2호
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• pp.57-70
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• 2002

Back pain is painful for people at a lower lumber(L4/L5 or L5/S1). It is experienced as a most frequent disaster 70％ of workers have suffered from back-pain. Especially, the occurrence rate of back pain for nurses is very high. Therefore, this study investigates female nurses who worked as a part of a medical cost management team, which mainly deal with the medical insurance in a general hospital at Seoul area. These nurses had different job tasks, which used computers for 50％ of their time, so it can be treated as VDT workers. As a first step of this project, a muscle fatigue was measured for these special VDT workers. First, survey for nurses was conducted to figure out what is a real problem of them. Second, to evaluate an experimental data, a medical cost management team was chosen for subjects. Areas of measurement were 3 places that were the trapezius (TR), the medial deltoid (MD), and the erector spine muscle (ES: L4/L5). These areas are most frequently used, so they were chosen for this study. Measurements were taken before work and after work. From these measurements, it was revealed that a fatigue really comes from their main VDT task excluding natural fatigue after work, so their work environment need to be corrected.

• 한국안광학회지
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• 제18권1호
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• pp.37-43
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• 2013

목적: 본 연구에서는 안구의 운동방향이 다른 컴퓨터 게임을 일정시간 동안 수행하였을 때 폭주근점 및 융합여력의 변화에 미치는 영향을 알아보고자 하였다. 방법: 안질환, 안과적 수술 및 조절기능의 이상이 없고 교정시력이 1.0 이상인 20대 40명을 대상으로 40분, 90분 동안 안구를 수평방향 및 수직방향으로 움직여야 하는 게임을 각각 실시하게 한 후 수평 및 수직 융합여력 및 폭주근점 값을 측정하였다. 결과: 수평 및 수직방향의 컴퓨터 게임 후 폭주 근점은 게임 전의 검사 값과 비교하여 멀어지는 경향을 보였으며, 수평 및 수직 융합여력은 모두 유의성 있게 감소하였다. 그러나 90분 동안 연속적으로 컴퓨터 게임을 하였을 때에는 융합여력 및 폭주근점의 감소폭이 40분 동안 작업을 수행하였을 경우보다 작았다. 안구의 주 운동방향에 따른 양안시 기능의 변화는 수직방향으로 고정된 운동보다 수평방향에서의 운동에 의해 더 크게 영향을 받는 것으로 나타났다. 결론: 본 연구에서는 video display terminal(VDT) 작업시 안구의 주 운동방향에 따라 융합여력 및 폭주근점의 변화가 다르게 나타남을 밝혔다. 따라서 지속된 VDT 작업에 따른 양안시 기능의 저하를 방지하기 위하여서는 주로 사용하게 되는 외안근에 따라 작업시간의 조정이 다르게 요구됨을 알 수 있었다.