• 제목/요약/키워드: VDT

검색결과 222건 처리시간 0.021초

사무 자동화에 따른 사무직 근로자의 건강과 연관된 자각 증상에 대한 조사연구 (An Investigation on the self-consciousness Symptoms of the Clerical Workers attendant upon Office Automation)

  • 정미화
    • 한국직업건강간호학회지
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    • 제3권호
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    • pp.54-70
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    • 1993

  • According as the automation of clerical work(OA ; Office Automation) develops, the use of VDT(Visual or Video Display Terminal) is increasing suddenly. But, in proportion to the spread of office automation(OA tendency), the self-conciousness syptom attendant upon the work is appearing also (Kim, Jung Tae, Lee, Young Ook, 1990). The apparatuses of office enable the clerical workers to be convenient and perform mass businesses. But, they are increasing the opportunity to be exposed to VDT syndrom, techno stress, computer terminal disease, pain by muscle strain(RSI), bradycausia of noise nature, and electromagnetic waves, etc. which are referred to as the new type of occupational diseases to the workers. It is the real situation that the workers to use VDT is complaining of the physical inconvenience sense in the recent newspaper and literature, it is the point of time that the sydrome to come from VDT use and computer terminal disease, etc. must be classified into the occupational disease(Lee, Kwang Young 1990, Lee, Kyoo Hak 1990, Lee, Won Ho 1991, Lee, Si Young 1991, Lee, Joon 1991, Choi, Young Tae 1991, Heo, Seung Ho 1989). In addition, it is the real situation that the scientifitic study result about the scope that electromagnetic waves has influence on the human body has not been suggested yet, and criticism on the stable exposure permission standard about electromagnetic waves to be emitted from VDT and on the problem in the health about electromagnetic waves is continuing. (IEEE Spectrum, 1990). In addition according to the experience of nursery business of industry field, it is the real situation that the patients who consult complaining of physical and mental inconvenience sence, among the users of apparatus of office automation, are reaching 10% of the patients coming to doctor's room. Therefore, it is necessary to confirm the self-consciousness symptom that the clerical workers complain of multilaterally with the actual state examination about the use of the apparatuses of offices automaton. Thus, this study was tried as th basic data for the cosultation and education for the maintenance and furtherance of the health of workers as the nurse of industry field, by confirming the contents of self-consciousness symptom attendant upon the use of the apparatus for office outomation making the financial institution in which the spparatus for office automation in most frequently used as the subject, and by examining whether there is the difference according to the subject of study, the data were collected, by using the questionnaire method, making 200 workers who consented to the study participation as the subject, among the persons who have spent over 3 months since they used the apparatuses for office automation and didn't receive the treatment in hospital due to the clerical disease for recent 3 years. The period of data collection was from Oct. 9, 1991 to Oct. 12. As for the measurement instrument about the complaint if self-consciousness symptom attendant upon the use of apparatuses fo office automation, the question item on the complaint symptom of health problem attendant upon the treatment of VDT that Kim(1991) developed and on CMI health problem and the question items on the fatigue degree due to industry were used by previous examination to 25 persons. Collected data were analyzed with the statistical method such as percentage, arithmetic mean, Person correlation coeffient, Kai square verfication, t-test, ANOVA, etc. by using SPSS/PC+ program, and the result is as follows : 1. The self-consciousness symptom that the clerical workers complained of most frequetly appeared high in 'My eyes are tired'(99.4%), 'I feel fatigue and weariness'(99.4%), 'I feel that my head is heavy5(90.0%), 'eyesight fell'(88.8%), 'I have a stiff neck'(88.8%), 'I fell pain in the shoulder'(85.0%), 'I feel cold and painful in the eyes'(76.9%), 'I feel the dry sense of eyeball'(76.2%), 'My nerves are edgy, and I an fretful, (75.6%), 'I feel pain in the waist'(73.2%) and 'I fell pain in the back'(72.8%). It emerged that the subject use the apparatuses for office automation complained of self-consciousness symptoms related to visual symptoms and musculoskeletal symptoms. 2. As for the general feature of examination subjects, the result to see the distribution by classifying into sex, age, school career, use career of apparatuses for office automation, skillfulness degree of the use of apparatus for office automation, use hours of the apparatuses for office automation per 1 day, type of business of the apparatus for office automation, rest hours during the use of apparatus for office automation, satifaction degree of business of office automation, and work circumstance, etc. emerged as follows : As for the sex of subjects, the distribution showed that men were 58.8% and women were 41.3%, Age was average 26.9. As the distribution of school career, the distribution showed that4below the graduation of high school' was 58.8%, 'graduation from junior college-university' was 35.0%, and 'over graduate school' was 6.3%. In the question to ask the existence or non-existence of experience of health consultation in connection with the work of office automation, the response that I had the consultation exprience and I feel the necessity emergerd as 90.1% And, the case that the subject who didn't wear the glasses or lens before using the OA apparatus wear glasses or lens after using OA apparatus emerged as 28.3% of whole. As for the existence or non-existence of use career of OA apparatus, the case under 3 years was highest as 52. 7%. As for the skillfulnness degree about the use of apparatus for office automation, most of them are skillful with the fact that 'common' was 44.4%, 'skill' was 42.5%, and 'unskillful' was 13.1% As for the use average hours of the apparatus for office automation per 1 day, the distribution showed that the case under 3-6 hours was 33.1%, the case under 6-9 hours was 28.1%, the case under 3 hours was 30.6%, and the case over 9 hours was 8.1% Main OA business and the use hours for 1 day showed in the order of keeping and retrieval, business of information transmission(162min), business of information transmission(79.3 min), business of document framing(55.5 min), and business of duplication and printing(25.4min). as for the rest during the use of apparatus for affice automation, that I take rest occasion demands the major portion, but that I take after completing the work emerged as 33.8%. Though the subiness gets to be convenient by the use of the apparatus for of office automation, respondents who showed the dissatisfaction about the present OA business emergd high as 78.1%. The work circumstances of each office was good with the fact that the temperature of office was 21.8, noise was average 42.7db, and the illumination was average 364.4 lx, in the light of ANSi/HFS 100 Standard. 3. Sight syptom, musculoskeletal symptom, skin and other symptoms showed the significant difference according to the extent of skillfulness of the apparatus for office automation. All the symptoms exept skin symptom showed the difference according to the use hours of the apparatus for office automation. All the question items exept the sytoms of digestive organs and the rest hours during the apparatus for office automation showed the signicant difference. The question item which showed the signicant difference from the satisfaction degree of present OA business showed the significant difference from all the question item classified into 6 groups. But, age and school career didn't significant difference from the complaint of any self-consciousness symptoms.

    . In conclusion, the self-consciousness symptoms of the subjects to use OA apparatus appeared differently, according to sex distiction, skillfull degree of OA apparatus, use hours of OA apparatus, the rest hours during th use of OA apparatus, and the satiafaction degree of persent business. Therefore, it is necessary that the nurse in the inuctry field must recognize to receive the education about the human technological physical condition which is most proper for te use of OA apparatus and about the proper rest method until they get accustomed to the use of OA apparatus. In addition, the simple exercise relax the tention of muscle due to the repetitive simple movement, and the education for the protection of eyesight are necessary.

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    • VOD 서비스용 광 CATV 시스템의 모델 연구 (Study on the Optical CATV Model for Video-on-Demand)

    • 박승현;강성수;이만섭
      • 전자통신동향분석
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      • 제10권2호통권36호
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      • pp.87-99
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      • 1995

    • 서비스의 다양화와 방송과 통신의 통합화로 인해 단방향 CATV에서 양방향 CATV의 뉴미디어 시대로 접어들고 있다. 본 고에서는 광 CATV 시스템인 SWAN(Sociocultural Wellbeing Advanced Network)에 VOD 서비스를 제공하기 위하여 미국 VDT(Video Dial Tone)의 수요예측을 통한 가입자망의 구성 종류, 이들 시스템의 초기 설치 비용을 참고로 하여 모델 도입에 경제성을 제고하였다. VOD 서비스를 도입함으로써 중심국과 분배센터간 전송 채널의 용량이 증가하여 전송 효율이 떨어져 서비스 블로킹 현상을 초래하게 된다. 이러한 전송효율의 저하를 방지하기 위한 방안을 제시한 VOD서비스용 광 CATV 시스템의 모델을 정립하였다.

    • https://doi.org/10.22648/ETRI.1995.J.100207 인용 PDF

    VTS 시스템 사용자 요구사항 분석을 통한 관제장비의 최적배치 방안

    • 김석재;이정진;장은규
      • 한국항해항만학회:학술대회논문집
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      • 한국항해항만학회 2016년도 춘계학술대회
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      • pp.266-268
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      • 2016

    • 우리나라는 항만운영의 효율성 및 선박 안전운항을 위하여 1993년 포항을 시작으로 전국 18개의 VTS 시스템을 설치 운영하고 있으나, 최근 선박 교통량의 증가와 더불어 해양사고의 증가 원인으로 인적요인에 대해 연구 필요성이 대두되고 있다. 특히 해상교통관제 업무는 고도의 주의력과 예측능력을 요구하므로 이를 저해하는 인적요인을 분석 및 관리할 필요성이 있다. 따라서 본 연구에서는 VTS 관제실의 근무환경에 대해 설문조사를 통한 요구사항 분석과 함께 현장조사를 시행하여 분석함으로서 VTS 관제장비 및 관제석의 최적 배치방안을 제시하여 최상의 해상교통관리 체제 구축에 대하여 고찰해 보았다.

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    Analytical Algorithms for Ergonomic Seated Posture When Working with Notebook Computers

    • Jalil, Sakib;Nanthavanij, Suebsak
      • Industrial Engineering and Management Systems
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      • 제6권2호
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      • pp.146-157
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      • 2007

    • This paper discusses two algorithms for recommending notebook computer (NBC) and workstation adjustments so that the user can assume an ergonomic seated posture during NBC operation. Required input data are the user's anthropometric data and physical dimensions of the NBC and the workstation. The first algorithm is based on an assumption that there are no workstation constraints while the second algorithm considers the actual seat height and work surface height. The results from the algorithms include recommendations for adjusting the NBC (tilt angle of the NBC base unit, angle between the base and screen units, and base support height) and the workstation (heights of seat support and footrest, and distance between the body and the NBC).

    • PDF KSCI

    서비스산업 종사원들의 안전사고와 안전관리에 관한 연구 -호텔숙박업관련 종사원들을 중심으로-

    • 권영국
      • 대한인간공학회:학술대회논문집
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      • 대한인간공학회 1997년도 춘계학술대회논문집
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      • pp.61-71
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      • 1997

    • 큰 사고가 일어날 때마다 '안전관리는 그 무엇보다도 중요하다'라고 강조하지만 우리나라 안전 관리의 현 상황은 열악하다고 할 수밖에 없다. 많은 중소기업이나 심지어 대기업에서도 무의식적 으로 등한시하거나 별로 크게 중요하게 여기는 것 같지는 않은 데, 이것은 현재의 사고발생율과 강도율들을 살펴 보면 누구나 쉽게 공감할 수 있을 것이다. 이러한 맥락에서 이 논문은 안전의 또 하나의 사각지대인 호텔관련업에서의 종사원들은 과연안전에 대하여 어떤 사고방식을 가지고 있으며, 실제 그들의 안전사고는 어떤 것들이며, 안전교육의 효과는 어떠한 가 등을 중점적으로 연구하였다. 실증적 분석에서는 안전관리가 어떻게 이루어 지고 있는 가에 대한 설문조사를 통하여 조사분석하였다. 조사 표본대상으로는 우리나라의 특급 호텔4개와 1개의 콘도미니엄 종사원들을 대상으로 하여 설문지를 배포하여 총 207명에 대한 답변을 토대로 분석을 하였다. 부상내용은 칼종류에 베임이 제일 많았으며, 안전사고의 주원인은 불안전한 자세와 불안전한 행동으로서 이에 대한 교육이 요구된다. 직업과 관련된 육체적 고통으로는 만성피로가 가장 많았다. 그외 구두가 발에 피로감을 주지말 것, 주방의 미끄럼방지, VDT증후군예방, 안전체조 및 구호복창 등의 사항들을 안전사고 예방을 위해 주의해야할 사항으로 요약할 수 있다.

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    복합재 Iso-Grid 패널 제작 및 좌굴시험 (Composite Iso-Grid Panel Production and Buckling Test)

    • 유재석;김광수;장영순
      • 한국복합재료학회:학술대회논문집
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      • 한국복합재료학회 2004년도 추계학술발표대회 논문집
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      • pp.51-55
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      • 2004

    • A composite Iso-grid panel is manufactured and tested by compressive load. Vertical stringers and side stringers are joined with skin by secondary bonding using a liquid type adhesive. Bonding fixtures were developed to attach the stringers to skin. A-scan was done for inspection of secondary bonding region. The out of displacement field is visualized by shadow moire system. The strain and vertical displacement are measured by strain gages and L VDT (Linear Variable Differential Transformer). A local buckling is occurred at all grid sections. After that, the final failure is occurred. The strain of side stringer is much less than that of vertical stringer and skin. Due to the side stringer, the local buckling is delayed. Therefore the ratio of the first buckling to failure load is greater than that of vertical stringer stiffened panel.

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    스크린 높이와 서류 고정대 위치에 따른 경부 주위 근육의 활성 정도 비교 (Comparison of Electromyographic Activities in the Neck Region According to the Screen Height and Document Holder Position)

    • 권혁철;정동훈
      • The Journal of Korean Physical Therapy
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      • 제13권3호
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      • pp.829-837
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      • 2001

    • Using Video Display Terminals(VDT) in the working environment often causes health complaints in the neck and shoulder region. This study was conducted on ten subjects, in order to investigate the change of electromyographic activities in the neck region(sternocleidomastoid muscle, upper trapezius muscle and erector muscle of cervical spine)with regards to the screen height and document holder position. A total of six different conditions of screen height and document holder position were measured during subjects performed a text-entry task for a duration of 10min. The raw EMG signal was transmuted into the root mean square(RMS). Two-way ANOVA for repeated measures was used to analyse the effects of the two factors. As a result, changing the screen height and document holder position has no effect on electromyographic activities in the neck region.

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    휘도대비에 따른 가독성 변화의 실증적 연구 -가독량과 화면크기를 고려한 디자인 가이드 라인 (Maximal luminance contrast does not lead to the maximal readability)

    • 이수진;전석원;김진우
      • 한국HCI학회:학술대회논문집
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      • 한국HCI학회 2006년도 학술대회 2부
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      • pp.103-111
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      • 2006

    • 본 연구는 글자색과 바탕색간의 휘도대비에 따른 가독성의 변화를 알아보고. 이때 이 관계가 화면의 크기와 가독량에 따라 어떻게 달라지가를 살펴 보고자 하는데 그 목적이 있다. 실험의 외적 타당도를 높이기 위해 실험에서 알아보고자 하는 변인 이외의 요인은 선행 연구들에서 나타난 최적 수치를 적용하여 통제하였고2번의 사전실험을 통해 가독량과 휘도대비의 단계를 결정하였다. 실험결과, 글자색과 바탕색의 휘도대비는 quadratic한 관계를 보였고 곡선의 만곡점은 C값 0.951로 나타났다. 만곡점으로 나타난 이 적정치 값은 화면의 크기와 가독량과는 상관없이 항상 동일하게 나타났다. 이것은 화면의 크기와 가독량에 상관없이 휘도대비가 최대일 때 가독성이 최대가 아니며 휘도대비의 적정치 값을 벗어나게 되면 가독성이 떨어지고 피로도가 높아진다는 것을 의미한다.

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    인텔리전트 빌딩의 공간특성을 고려한 배경결정과 형광등가구 설계 (Decision of the Luminous Intensity Distribution and Design of Fluorescent Luminaire based on Space Features of the Intelligents Building)

    • 이정욱;김홍범;한종성;김훈
      • 한국조명전기설비학회:학술대회논문집
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      • 한국조명전기설비학회 2000년도 학술대회논문집
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      • pp.123-128
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      • 2000

    • 공간의 효율적 조명시스템의 설계를 위해서는 그 공간의 물리적 조건들과 작업의 내용 등을 고려하여 표준적인 상황을 규정하고, 그 상황에서 가장 유용한 조명설계를 찾아내어 표준화해야 한다. 특히, 인텔리전트 빌딩에서는 OA도입으로 인한 VDT 작업환경, 취업인구의 고령화 등의 공간특성을 고려한 조명계획이 요구되며 이러한 조명계획을 구현할 수 있는 조명기구를 제작할 필요가 있다. 따라서 이 연구에서는 국내 인텔리전트 빌딩의 주요공간별 크기와 형태 및 특성을 조사하여 표준공간을 선정했고, 이를 반사판 설계에 반영하여 3가지 형태의 형광등기구를 설계, 분석하였다.

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    VDT 작업환경에서 작업시간이 근피로에 미치는 영향 (The Effect of Working Hour on Muscle Fatigue in Visual Display Workplace)

    • 한정수
      • 한국안전학회지
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      • 제15권1호
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      • pp.153-160
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      • 2000

    • Occupational cumulative traumas (CTDs) are becoming one of leading ailments in industrialized worl $d^{(1.2)}$. The degree of muscle fatigue is important parameter to understand cause of occupational cumulative trauma disorders. To quantify degree of muscle fatigue, muscle EMG activity was measured during isometric and dynamic contractions(repetitive concentric/eccentric muscle contraction) and its analyzed data, such as RMS, median frequency, and median power were compared when the muscle was fresh and exhausted. When muscle become fatigue, it was observed that median frequency decreased and median power and RMS increased However, based on overall prolonged observation, median frequency increased and median power and RMS decreased. Therefore it was concluded that shifting patterns of RMS, median frequency, and median power values can be used as parameter to evaluate degree of muscle fatigue even in dynamic muscle contraction.

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