7차 교육 과정에 따른 중·고등학교 과학실 구성에 관한 연구 - 교과 과정 분석을 중심으로 -

정호근,이호진,Chung, Ho-Keun,Lee, Ho-Chin 한국교육녹색환경연구원 2003 교육·녹색환경연구 Vol.3 No.2

This study will focus on analysing changes in subject content, teaching and learning methods, teaching model, and evaluation which have been brought about by the introduction of the 7th education curriculum, and on considering how many kinds of science labs are needed, and on proposing the desirable direction of building them. Methods for studying the goals above are as follows: First, considerations were given on how science labs must be structured and on which equipment are needed, which were done by analysing change of science education for future society, science subjects in the 7th educational curriculum, current situation of science labs, and science educational materials. Second, based on the need of students, it was examined how many science classes were needed, and through this the number of labs needed and users' requirement were analysed. Third, on the basis of the analysis above, existing conditions in planning science labs and the example of existing labs were examined.

탄광부진폐증자의 혈청 면역단백 농도에 관한 연구

정호근,천용희,홍정표,Chung, Ho-Keun,Cheon, Yong-Hee,Hong, Jeong-Pyo 대한예방의학회 1987 Journal of Preventive Medicine and Public Health Vol.20 No.2

Serum immunoglobulin(Ig)A, IgG, IgM, levels were measured in 99 coal workers' pneumoconiosis (CWP) patients and 12 healthy coal workers and 9 non-miners to compare with each group by the radiological categories, its complications and working period in coal mine. Serum were measured by nephelometry, The findings were as follows: 1) Serum IgA levels were significantly different between three groups of CWP patient, healthy coal worker and non-miner ($mean{\pm}standard$ deviation: $226.4{\pm}87.7,\;221.3{\pm}45.1,\;170.1{\pm}65.7$ respectively). 2) There were no significant differences of Ig levels among radiological categories of CWP. 3) There were no significant differences of Ig levels among simple pneumoconiosis and its complicated disorders. 4) The three Ig levels were slightly increased in the group of mining years less than 20 years (IgA: r=0.1869, p<0.10 IgG: r=0.2902, p<0.05 IgM: r=0.2889, p<0.05).

석탄광부폐증자의 직업력에 관한 연구

정호근,천용희,이경용,홍정표,Chung, Ho-Keun,Cheon, Yong-Hee,Rhee, Kyung-Young,Hong, Jeong-Pyo 대한예방의학회 1987 예방의학회지 Vol.20 No.1

The purpose of this study is to analyze occupational history of coal miners with pneumoconiosis. In this study, occupational characteristics of 49 coal miners with pneumoconiosis were compared with those of 45 coal miners without pneumoconiosis but in similar age category($43{\sim}52$ years of age) based on interview survey. Various indices on occupational characteristics were developed for the following areas: duration of employment, perception of working condition, working density, dust concentration, temperature, humidity, and experience of respirator wearings. Perception of working condition were measured in 5 points scales but experiences of respirator wearing was measured in 3 points scale. Each index was multiplied by duration of employment. From the analysis, only the experience of respirator wearing showed statistically significant difference between the two groups. Therefore, respirator wearing seemed to be effective in reducing occurrence of pneumoconiosis.

강릉지역 석탄광업 근로자의 진폐에 대한 인식 및 태도

정호근,이경용,Chung, Ho-Keun,Rhee, Kyung-Yong 대한예방의학회 1988 Journal of Preventive Medicine and Public Health Vol.21 No.2

This study was planned in order to investigate coal miners' recognition and attitude toward pneumoconiosis, and its realtionship with related behavior for prevention of pneumoconiosis. Study object was coal miners in Kangneung area, sampled by multistage random proportional sampling. Sample size was 13% of total coal miners in Kangneung area. The results were devided into three parts: (1) descriptive results presented percent distribution, (2) reclassification of knowledge, experiences, and attitude by factor analysis, (3) prediction of health behavior for prevention of pneumoconiosis by discriminant analysis. Knowledge, experiences, and attitude toward pneumoconiosis were classified into nine factors. Knowledge about pneumoconiosis were broken down to two factors and attitude to four factors, and valence, perceived severity were classified into each one factor. According to demographic, socioeconomic characteristics, and factors of knowledge, experiences, attitude about pneumoconiosis, about 62% of behavior of wearing respiratory protector was correctly discriminated. And by the same methods, about 81% of behavior of hospital visit at respiratory symptoms; cough, sputum, chest pain etc. was discriminated correctly.

특수병과의 과거 군 소음 노출이 소음 노출 작업자의 청력에 미치는 영향

정호근,김규상,Chung, Ho-Keun,Kim, Kyoo-Sang 대한예방의학회 2003 예방의학회지 Vol.36 No.2

과거 군 복무 기간 동안 청력에 영향을 미치는 사격 및 포격 등 소음에 노출된 군 경력이 현재 소음 노출 근로자에게 어떤 청각학적 영향을 미치며, 소음성 난청의 발생과 관련이 있는지를 평가하고자 하였다. 중소규모 선박수리 및 건조업체 15개 사업체 440명을 대상으로 근로자의 일반 사항, 임상증상, 현재의 청력과 관련한 과거 이과적 병력, 군 복무시 충격소음의 상시적 노출 등의 군 경력, 이명 등의 자각증상에 관한 설문조사와 순음청력검사 및 중이검사를 시행하였다. 현 직종에서의 소음 노출군 중 과거 군에서 소음 노출군이 각 주파수별 청력역치와 평균 청력역치가 가장 컸으며, 특히 2-8kHz의 주파수 역치에서 차이가 크게 나타났다. 청력손실자의 비율 및 중증도의 정도가 현 직종에서의 소음 노출군 중 과거 군에서 소음 노출군이 가장 높은 비율을 보였으며, 특히 감각신경성 난청으로서 소음성 난청자가 통계적으로 유의하게 더 많았다. 이명은 현재 소음 노출 직종에 있는 군에서 높았으며, 그중 군 소음 노출군이 46.2%로 유의하게 더 높았다. 소음성 난청 여부를 종속변수로 한 로지스틱 회귀분석 결과, 연령, 현 직종 근무기간, 군 소음 노출력, 현 직종에서의 소음 노출 여부가 유의한 독립변수로 작용하였다. 우측 귀의 경우, 소음성 난청에 대한 군 소음 노출력의 비차비는 4.5이었고, 현 직종의 소음 노출의 비차비는 7.9이었다. 군 소음 노출 및 현 작업 소음 노출 여부에 따른 각 군별 좌우측 귀의 4 kHz 청력역치와 평균 청력역치는 I군에서 좌우측 귀 모두 나이 및 근무기간이 증가할수록 가장 크게 영향을 미치며 유의하게 증가하였으며 II군, III군, IV군 순으로 청력 역치가 증가하였다. 군에서 노출되는 충격소음은 청력손실과 이명 등 청각학적 영향을 미치며 사업장에서 소음 노출에 따른 소음성 난청의 발생에도 부가적인 영향을 미친다. 따라서 군에서의 소음 노출에 따른 청각학적 영향을 예방하기 위해서뿐만 아니라 소음 노출 근로자에 대한 청력 관리 측면에서도 이의 조기 진단, 치료, 보상 및 재활을 위해서는 군에서의 소음 노출 문제까지 함께 다루어야 함을 시사한다. Objectives : Impaired hearing is a prevalent occupational hazard, not only in industry, but also in the armed forces. In military life, noise has unusual characteristics, and constitutes a serious hazard to hearing. The aim of this study was to analyze the hearing threshold data in order to compare the hearing loss among shipyard workers, representing different workers, and a military service background. Methods : A cross-sectional audiological survey, combined with a questionnaire study, was conducted on a stratified random sample of 440 shipyard workers, with long-term exposure to noise. The employees were divided into four groups, according to their working and military service backgrounds, in relation to their exposure to noise. Results : As expected, the working and military noise exposure group (Group I) had significantly poorer hearing than the other groups. The high frequencies (2-8 kHz) showed the greatest difference in terms of poorer fearing in both ears. The prevalence of noise-induced hearing loss (NIHL) was highest in Group I. A logistic regression analysis was applied to determine the dependence of the NIHL in relation to age, smoking, drinking, working duration, ear protection, past history of ear diseases, and working and military sonics backgrounds, on the noise exposure The important factors found to be related to the NIHL, in relation to noise exposure were: age, work duration, and working and military service backgrounds. The adjusted odds ratio estimates for NIML in the right ear were 4.5 times greater (95% CI 1.7-11.6) for the military noise exposed group, and 7.9 times greater (95% CI 2.0-31.3) for the working noise exposed group than in the controls. The hearing thresholds at the pure-tone average and 4 kHz were significantly increased with age and work duration with both the working and military service backgrounds. Conclusions : From these results, specific preventive programs were planned, which should be assessed by epidemiological surveillance of the military noise exposed population.

열린 교육을 위한 학습 공간에 관한 연구 -교실 개방형과 교실 독립형을 중심으로-

정호근,유웅상,Chung, Ho-Keun,Yu, Woong-Sang 한국교육녹색환경연구원 2003 교육·녹색환경연구 Vol.3 No.1

Focusing on both the form of open classroom and that of independent one which have been most planned and being built, this study was designed to see if the educational environment of their inner space, structure, and facilities gives a proper support to classroom activities during the various classes based on open education. Selecting representative teaching methods in elementary school, such as open simultaneous learning, learning through a medium, learning in the corner, subject learning, team teaching and learning hardening basics, this study surveyed problems and improvements using literature works, questionnaires, observing, and interviews. Through the study on learning space for open education, it has been known that the form of independent classroom fits into one classroom learning and open classroom into small group learning and individual learning, and that the form of open classroom connecting open space with a classroom are more desirable when there is change from large to small group.

유명 결근에 관한 조사

정호근,Chung, Ho-Keun 대한예방의학회 1980 Journal of Preventive Medicine and Public Health Vol.13 No.1

The researcher intended to investigate the rate of absenteeism and other related statistics among the workers in a steel and iron industry with the criteria and the recommendation of the International Association on Occupational Health. With the well designed questionaire and interview, 1,882 workers were surveyed from July the 24th to the 28th, 1978. The results were as follows; The workers who experienced absence were 16.8% in July. The rate of frequency (spells) was 3.24, the duration was 4.65, the frequency (persons) was 345.20, and the lost time was 1.27. 41.0% among the absentee experienced sickness absences and the rates of sickness absence were as follow; the frequency (spells) nab 1.34, the duration was 2.29, the frequency (persons) was 101.06 and the lost time was 0.63, respectively. The main causes of sickness absence were general symptoms, such as fatigue (50.8%) and gastro-intestinal symptoms (13.8%). The frequency of sickness was highly correlated to the frequency of drinking, the amount of smoking, the physical work-load and the amount of drinking, which was analysed by the stepwize multiple regrssion analysis. The multiple R due to the above mentioned four variables was 0.320 and the R square was 10.3%.

탄광부 진폐증자의 흉부 방사선 사진상 소음영의 밀도에 따른 혈청 단백 농도 및 전기영동 분획상

홍정표,정호근,Hong, Jeong-Pyo,Chung, Ho-Keun 대한예방의학회 1991 Journal of Preventive Medicine and Public Health Vol.24 No.1

The concentrations of serum proteins fractions and their electrophoretical patterns were investigated in 135 patients with coal workers' pneumoconiosis who participated in confirmative examination for pneumoconiosis in December 1989. Their radiographical profusions were classified as 1/0 or more. Agarose film and phosphoric acid-sodium hydroxide buffer(pH 9.6) were used for electrophoresis. Concentration of each protein fractions and electrophoretical patterns seemd to be equivalent to reference values. Serum ${\alpha}_1$- and $\beta$-globulin concentrations, however, were significantly different (p<0.50) among categories of small opacity profusions and showed the lowest level in the group of category 1. Albumin concentratins decreased and ${\alpha}_2$- globulin concentrations increased significantly (p<0.05) in the group of complicated with pulmonary tuberculosis. $\gamma$-globulin concentrations were not varied by category of profusions nor by pulmonary tuberculosis complication.

유기용제 폭로 근로자들에 대한 신경행동검사에 관한 연구

강성규,정호근,홍정표,김기웅,조영숙,Kang, Seong-Kyu,Chung, Ho-Keun,Hong, Jeong-Pyo,Kim, Ki-Woong,Cho, Young-Sook 대한예방의학회 1993 Journal of Preventive Medicine and Public Health Vol.26 No.2

In order to evaluate the confounding factors of neurobehavioral tests and the neurobehavioral effects in the workers exposed to organic solvents, NCTB was carried out on 100 workers. 46 workers had never been exposed to neurotoxic substances, and the others were being exposed to the solvents, mainly toluene. Simple reaction time, digit symbol, Santa Ana dexterity test and persuit aiming were different with age in non exposure group. Simple reaction time was carried out well in males, and digit symbol and persuit aiming were in females. There was no difference at educational level when the subject was educated over 12 years. Santa Ana dexterity and Benton visual test differed according to exposure level to toluene, however simple reaction time didn't. The acute neurotoxic effect was not excluded in this study. But, NCTB could be used to evaluate and prevent neurobehavioral changes in workers exposed to neurotoxic solvents in Korea.

요양 중인 탄광부 진폐증자의 생존율 연구 - 요양 입원시 특성을 중심으로 -

이경용,정호근,Rhee, Kyoung-Yong,Chung, Ho-Keun 대한예방의학회 1989 Journal of Preventive Medicine and Public Health Vol.22 No.1

The authors investigated mortality rate of hospitalized CWP(coal workers' pneumoconiosis) patients. Date, which was composed of age, date of hospitalization, date of death, and radiological findings(profusion of small opacity, type of large opacity, tuberculosis, emphysema, pneumothorax, and cardiac abnormality), was gathered from medical charts and chest x-ray films at the time of hospitalization of CWP patients. Among 738 CWP patients, that were entered survey differently and have followed different period, 160 CWP patients were died during different observational period. Mean value of observational period was 203 weeks, and mean age at hospitalization was 51 years. Because of short observational period, mean survival time could not found. There was statistically significant difference of mortality rate between group of small opacity and that of large opacity. In group of small opacity 5 year survival rate was 0.80 and in group of large opacity that was 0.73. And 80 percentile survival time was 57 months in group of small opacity and that was 40 months in group of large opacity.