• 한국산업보건학회지
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• 제22권2호
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• pp.149-155
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• 2012

Objectives: 이 논문의 목적은 한 사업장에서 수십 년 동안 진행된 소음감소계획이 실제적이고, 경제적인 것을 증명하고 이를 바탕으로 소음의 공학적 개선방법과 효과적인 실행을 위한 실제 작동 가능한 모델을 제시하는 것이다. Methods: 1967년도에 설립된 다국적 전자회사에서 1987년부터 2002년까지 실행된 각종 소음 감소 노력, 요소, 프로그램을 분석하고 이 기간 동안 소음감소가 어떻게 실제로 일어났는지 분석하였다. 특히 회사가 다른 여러 가지 노력을 한 후에도 실질적 효과를 기대하기 어려워 공학적 개선과 같이 도입한 Action Learning Team (ALT) 활동에 초점을 두고 개선 효과를 파악하였다. Results: 실제 소음의 감소노력은 산업안전보건법의 변화에 따라 여러 가지 형태로 실행되었다. 주된 효과는 ALT활동이 있고 나서 이루어졌는데 평균 소음 노출수준이 86.9 dBA에서 79.8 dBA로 현저히 감소하였으며 소음 지역 (85dBA 이상 )도 10개 지역에서 3개 지역으로 70% 감소하였다. ALT 활동의 결과로 나타난 7개 지역의 소음 감소를 위해 투입된 총 비용이 6,767 달러였다. ALT 활동을 처음 시작한 첫해에 소음 감소지역을 줄임으로써 이 지역의 근로자가 청력검사를 받지 않아서 초기 396명의 근로자가 청력검사를 받던 것을 활동 후 130명만 받아 266명의 근로자가 청력검사를 받지 않아도 되어 청력검사 비용이 6,650 달러 절약되었다. 따라서 장기간으로 보면 매우 비용효과적인 방법으로 증명되었다. Conclusions: 실제 소음감소가 현저히 일어나고, 비용효과적인 소음 감소가 일어나려면 기기 설비 공정담당자가 소음감소의 중요성을 잘 알고, 그 기법을 숙지하고 있어야 하며, 실제 활동을 할 수 있도록 관리자 층의 권한을 위임 받아 활동할 수 있어야 한다. 이 논문에서는 공학적 개선 태스크포스팀을 운영하여 ALT활동을 하였을 때 실제적이고, 비용효과적인 소음 감소를 증명하였다.

• 보건교육건강증진학회지
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• 제7권1호
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• pp.10-26
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• 1990

In Korean education, the health contents are scattered in various course subjects throughtout the primary and junior high school curriculum. So it is very difficult to provide systematic health education. The purpose of this study was to provide a guide for health education using health topic areas and major concepts that represent the scope of material that should be covered in health instruction. The steps used in selecting these health topic areas and major concepts were as follows: 1. A review of the literature related to health and health education was done to develop the rationale underlying this study. 2. Health topic areas basic to the growth and development characteristics of children, to human needs and to societal needs for healthful living were indentified. 3. The major concepts for each health topic area based on health sciences and children's growth and development levels were selected. 4. The major concepts selected were organized in sequence to guide health education from grade one to grade nine. The results of this study were as follows: 1. The identification of eleven health topic areas essential for health education. These include: personal habits and health healthy growth and development nutrition and health prevention of disease and disorders drugs and health mental health family life and health sex education accident prevention consumer health community health 2. The identification of the major concepts(generalizations) for each health topic area: 33 major concepts were identified as a guide in determining the health content of health education programs. These are 1) body cleaniness, 2) health of the sensory organs, 3) dental health, 4) exercise and rest, 5) growth and development, 6) body structure and function, 7) developmental tasks, 8) balanced nutrition, 9) eating habits, 10) food preparation and food storage, 11) sources of disease and disorders, 12) disease preventive behavior, 13) care during illness, 14) drug use and misuse, 15) drug addiction, 16) emotional responses, 17) human relationship, 18) self concept, 19) social adjustment, 20) health habits of the family, 21) interdependence of family members, 22) origin of life, 23) characteristics of man and woman, 24) sexual instinct, 25) safety behavior, 26) emergency measures, 27) criteria for selection of health products, 28) proper use of health information, 29) utilization of health and medical services, 30) environmental conservation, 31) environmental pollution, 32) population control, 33) function of public health services. 3. The organization of the concepts(generalizations) in sequence and for continuity in health instruction at the primary and junior high school level.

• 한국환경보건학회지
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• 제31권5호
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• pp.349-359
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• 2005

In this study, we focused on the geographical and the meterological conditions, the atmospheric examination, the soil contents and compositions in order to establish cultural properties conservation plan in Gyeongju and its surroundings. Also, the transport route with environmental contaminants in Ulsan and Pohang was examined. The results could be summarized as follows ; Air pollutant and environmental contaminant was transported by two types of winds. One is induced by local winds, the other is induced by synoptic winds. Air contaminant transported from coastal regions to inland regions were associated with wind velocity. Gyeongju had good atmospheric conditions, i.e. $SO_2\;0.009{\sim}0.011ppm,\;CO\;0.6{\sim}0.8ppm,\;NO_2\;0.015{\sim}0.020ppm,\;O_3\;0.017{\sim}0.032ppm,\;PM_{10}\;46{\sim}62{\mu}g/m^3\;and\;Pb\;0.034{\sim}0.060{\mu}g/m^3$, which was below environmental air qualify standards and was little lower than those of Pohang and Ulsan. However, Ulsan and Pohang city are located on south-east coast and have many industrial facilities. Hence, air pollution problems become serious issues in Ulsan, Pohang, Busan, Daegu and other cities due to the emission of air pollutants from the various industrial facilities, incinerator and power plants, etc. The soil of Gyeongju had heavy metals conditions, i.e. $Cd\;0.01{\sim}0.08mg/kg,\;Cu\;N.D{\sim}2.39mg/kg,\;As\;N.D{\sim}0.07mg/kg,\;Hg\;N.D{\sim}0.15mg/kg,\;Pb\;0.49{\sim}1.39mg/kg,\;Cr^{+6}\;0.02{\sim}0.42mg/kg,\;Fe\;0.74{\sim}1.55mg/kg,\;Mn\;0.11{\sim}0.49mg/kg\;and\;Zn\;1.11{\sim}3.56mg/kg$. However, pH value of soil had range of $4.12{\sim}7.45$. The results showed that high pH concentration of soil could occur due to air pollution diffusion and environmental contaminant transport at Ulsan and Pohang city.

• 한국가정과교육학회지
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• 제10권2호
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• pp.29-42
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• 1998

The purpose of this study was to identify the contents that students want to learn the most on Home-Economics. Participants were 710 middle school students(359 boys and 351 girls) from 9 schools located in 4 cities and 5 counties in CholaBukDo. The results are as follows: 1. Of 32 contents on Family life, boys were interested in 'the puberty', 'pregnancy and the ethics on sex', 'social needs', 'the importance of family relationship', and 'adolescents' physical development'. On the other hand, girls were more intered in 'pregnancy' and 'the ethics on sex', 'the puberty', 'development of career consciousness' and 'career preparation', 'the adolescents' physiolosical and physical development', and 'the importance of family relationship'. 2. Of 37 contents of Managing home resource and Consumer life subarea, boys showed their interests on 'environmental problems', 'environmental conservation', 'environmental pollution', 'management of time and work', 'knowledge', 'management of their abilities'. And girls were more interested in 'environmental conservation', 'environmental pollution', 'environmental problems', 'adolescents life', and 'management of time and work'. 3. Of 49 contents on Dietary life, boys were more interested in 'puberty and the development', 'importance of nutriment', 'nutrition and health' and 'smoking and the health'. However, girls were more interested in 'smoking and health', 'puberty and the development', 'the importance of nutriment', 'nutrition and health', 'a realistic plan to reduce the food-based environmental pollution'. 4. Of 40 contents on Clothing life subarea, while boys were interested in 'the suitable cloths on oneself', 'clothing design', 'regulation of temparature', physical protection' 'merchandising for ready-made clothing'. On the other hand, girls were mostly interested in 'the suitable cloths on oneself', and next 'the clothing design', 'merchandising for ready-made clothes','physical protection', and 'the appropriate posture and physical adornment'. 5. Of 18 contents on Residence life subarea, teachers emphasized the importance of ventilation for adjusting the room environment and students were more interested in the effective use of the residing space. In general, those middle school students in Cheolabukdo showed the biggest interest on 'Clothing life', 'Residence life' the second, 'Eating life' the third, 'Human development and Family relationship' the fourth, and Management of family resource and Consuming life' was their fifth interest. Such result was consistent with Ⅱ-Rok Park's previous research(1997). Since the participants for this study were sampled form 9 schools located in CheolaBukDo, it is not suitable to apply the results nationwide. The restricted sampling must be considered and further studies are needed to make comparisons among areas.

• 한국환경복원기술학회지
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• 제17권2호
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• pp.73-83
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• 2014

This study was conducted to evaluate defects in Zelkova serrata trees using an ultrasonic tomograph (PICUS) and suggest a management plan to maintain it as a natural and cultural resource. In previous study, health information of 16 protected trees were obtained by surveying the following categories; tree appearance, crown, bark, root exposure, water and nutrition, deterioration, pest, vitality, ground status, and pollutant. The average score of health was 16.5 in 16 trees, which means that general monitor is needed for management. In this study, the evaluation result of tree's inside defects using an ultrasonic tomograph showed that 43.8% of decay rate has been found in 16 trees. In fact, some trees look to be good even though they actually have a defects causing broken by natural disaster such as strong wind. Therefore, it is urgent to put some support to the trees and come up with a protective plan. The results of this study would be useful as basic data in developing a guideline for the efficient conservation and management of big and old trees.

• Smart Structures and Systems
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• 제4권2호
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• pp.195-208
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• 2008

This paper summarizes the experimental vibration-based structural health monitoring study on a historical monument in Jordan. In this work, and within the framework of the European Commission funded project "wide-Range Non-Intrusive Devices Toward Conservation of Historical Monuments in the Mediterranean Area", a seven and a half century old minaret located in Ajloun (73 km north of the capital Amman) is studied. Because of their cultural value, touristic importance and the desire to preserve them for the future, only non-destructive tests were allowed for the experimental investigation of such heritage structures. Therefore, after dimensional measurements and determination of the current state of damage in the selected monument, ambient vibration tests are conducted to measure the accelerations at strategic locations of the system. Output-only modal identification technique is applied to extract the modal parameters such as natural frequencies and mode shapes. A Non-linear version of SAP 2000 computer program is used to develop a three-dimensional finite element model of the minaret. The developed numerical model is then updated according to the modal parameters obtained experimentally by the ambient-vibration test-results and the measured characteristics of old stone and deteriorated mortar. Moreover, a parametric identification method using the N4Sid state space model is employed to model the dynamic behavior of the minaret and to build up a robust, immune and noise tolerant model.

• 한국환경보건학회지
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• 제23권4호
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• pp.57-66
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• 1997

Successful energy conservation and good indcfor air quality (IAQ) are highly dependent on ventilation system. Air filtration is a primary solution of indoor air control strategies in terms of reducing energy consumption and improving ihdoor air quality. A conventional system with bypass filter, as it is called variable-air-volume/bypass filtration system (VAV/BPFS), is a variation of the conventional variable air volume (VAV) systems, which is designed to eliminate indoor air pollutant and to save energy. Bypass filtration system equipped with a high-efficiency particulate filter and carbon absorbent provides additional cleaned air into indoor environments and maintain good IAQ for human health. The objectives of this research were to compare the relative total decay rate of indoor air pollutant concentrations, and to develop a mathematical model simulating the performance of VAV/BPFS. All experiments were performed in chamber under the controlled conditions. The specific conclusions of this research are: 1. The VAV/BPFS system is more efficient than the VAV system in removing indoor air pollutant concentration. The total decay rates of aerosol, and total volatile organic compound (TVOC) for the VAV/BPFS system were higher than those of the conventional VAV system. 2. IAQ model predictions of each pollutant agree closely with the measured values. 3. According to IAQ model evaluation, reduction of outdoor supply air results in decreased dilution removal rate and on increased bypass filtration removal rate with the VAV/BPFS. As a results, we recommends the VAV/BPFS as an alternative to conventional VAV systems.

• 한국조경학회지
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• 제45권4호
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• pp.45-53
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• 2017

최근 자연장에 대한 국민들이 관심과 호감이 커져가고 있지만, 이에 반해 자연장 선택하는 국민은 별로 많지 않다. 본 연구의 개인의 특성, 자연장에 대한 인식 요인, 그리고 자연장 이용의도 간에 구조적 관계를 실증적으로 분석하여 자연장 이용을 활성화할 수 있는 필요한 정보를 제공하는 데 있다. 이를 위해 대전에 거주하는 학생과 주민 430명을 대상으로 설문조사를 실시하였다. 본 연구의 결과는 다음과 같다. 첫째, 설문응답자의 연령과 종교별로 자연장 이용의도에 유의적인 차이가 있었다. 연령에서는 20대가, 종교에서는 천주교 신자의 자연장 이용의도가 가장 높게 나왔다. 둘째, '자연장 정보'에서는 연령별, 종교별로, '종교와 철학'은 연령별, '물리환경'에서는 성별, 연령별로, '보존성'에서는 성별, 연령별에서 유의적인 차이가 있었다. 전체적으로 보면 연령이 낮을수록 자연장 인식이 더 긍정적으로 나왔고, 성별의 경우, '물리환경'에서는 여자가 남자보다, '보존성'에서는 남자가 여자보다 더 긍정적으로 생각하였다. 셋째, 자연장 인식의 하위 변인인 자연장 정보, 장법, 종교와 철학, 물리환경, 보전성 모두 자연장 이용의도에 유의적인 정(+)의 영향력이 있었다. 오즈비(odds ratio)를 보면, 종교와 철학, 장법, 물리환경, 보존성, 자연장 정보의 순으로 자연장 이용의도에 미치는 영향이 큰 것으로 나타났다.

• Journal of Ginseng Research
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• 제40권4호
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• pp.315-324
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• 2016

Background: Biocontrol agents are regarded as promising and environmental friendly approaches as agrochemicals for phytodiseases that cause serious environmental and health problems. Trichoderma species have been widely used in suppression of soil-borne pathogens. In this study, an endophytic fungus, Trichoderma gamsii YIM PH30019, from healthy Panax notoginseng root was investigated for its biocontrol potential. Methods: In vitro detached healthy roots, and pot and field experiments were used to investigate the pathogenicity and biocontrol efficacy of T. gamsii YIM PH30019 to the host plant. The antagonistic mechanisms against test phytopathogens were analyzed using dual culture, scanning electron microscopy, and volatile organic compounds (VOCs). Tolerance to chemical fertilizers was also tested in a series of concentrations. Results: The results indicated that T. gamsii YIM PH30019 was nonpathogenic to the host, presented appreciable biocontrol efficacy, and could tolerate chemical fertilizer concentrations of up to 20%. T. gamsii YIM PH30019 displayed antagonistic activities against the pathogenic fungi of P. notoginseng via production of VOCs. On the basis of gas chromatography-mass spectrometry, VOCs were identified as dimethyl disulfide, dibenzofuran, methanethiol, ketones, etc., which are effective ingredients for antagonistic activity. T. gamsii YIM PH30019 was able to improve the seedlings' emergence and protect P. notoginseng plants from soil-borne disease in the continuous cropping field tests. Conclusion: The results suggest that the endophytic fungus T. gamsii YIM PH30019 may have a good potential as a biological control agent against notoginseng phytodiseases and can provide a clue to further illuminate the interactions between Trichoderma and phytopathogens.

• 성인간호학회지
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• 제12권4호
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• pp.584-594
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• 2000

This study was the done to describe health behavior and determine affecting factors in middle aged women. The subjects of this study were 306 middle aged women, living in M city, during the period from June 28th to August. 31st 1999. The instruments for this study were Health Behavior Assesment tool developed by Kim (1998), Self esteem scale developed by Rosenberg(1965), the perceived health status scale by Lawston, et al.(1982), the Quality of life by Ro(1988), the attitude toward Climacteric symptom by Ji(1983). The data were analyzed using descriptive statistics, t-test, Pearson correlation coefficients and stepwise multiple regression. The result of this study are as follows; 1. The total mean score for Health behavior was 2.51(range 1-4). The mean scores on the subscale were 2.83 for nutrition, 2.81 for stress management, 2.71 for limitation of liking in the menstrual group, health behavior was 2.64. The mean scores on the subscale were 2.98 for nutrition, 2.85 for stress management, 2.82 for limitation of liking, 2.80 for energy conservation in the menopausal group, 2. The mean scores for cognitive-perceptual variables in the menstrual group were perception of health status: 2.61, quality of life: 3.17, self-esteem: 2.59, and attitude for climacteric symptom: 3.02. In the menopausal group the scores were perception of health status: 2.41, quality of life: 3.10, self-esteem: 2.62, attitude for climacteric symptom: 3.06. 3. Health behavior and self-esteem(r=.269, p=.000; r=.205, p=.042), attitude for climacteric symptom(r=.192, p=.005; r=.545, p=.000), quality of life(r=.385, p=.000; r= .195, p=.050) and health behavior were correlated positively, and the perception of health status and health behavior were correlated negatively(r=.-135, p=.050; r= -.207, p=.040 ) in the menstrual group and menopausal group. 4. Perception of health status, quality of life, age, self-esteem, job and marital status explained 33.7% of the variance for health behavior in the menstrual group; self-esteem and education explained 33.1% of the variance for health behavior in the menopausal group. In conclusion, health behavior should be considered when developing nursing strategies for middle-aged women, especially when dealing with perception of health status, quality of life, and self-esteem.