• 한국산업보건학회지
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• 제16권1호
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• pp.1-10
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• 2006

Concentration and identification of airborne bacteria in the regulated public facilities were examined with the six-stage cascade impactor. Geometric mean total and respirable concentrations of airborne bacteria were $404cfu/m^3$ and $194cfu/m^3$ in hospital, $931cfu/m^3$ and $358cfu/m^3$ in kindergarten, $294cfu/m^3$ and $134cfu/m^3$ in day-care center, and $586cfu/m^3$ and $254cfu/m^3$ in postpartum nurse center, respectively. As a result, culturable total and respirable concentrations of airborne bacteria were significantly highest in kindergarten and lowest in day-care center (p<0.05). The ratio of respirable to total concentration of airborne bacteria in the investigated public facilities was ranged from 30% to 40% but there was no significant difference among them (p>0.05). The mean I/O ratio of culturable total and respirable concentrations were 0.58 and 0.66 in hospital, 0.71 and 0.83 in kindergarten, 0.28 and 0.41 in day-care center, and 0.63 and 0.78 in postpartum nurse center, respectively. Day-care center showed the lowest I/O ratio of culturable total and respirable concentration of airborne bacteria (p<0.05) but a significant difference was not found among other facilities. Indoor concentration of airborne bacteria did not correlated significantly with indoor temperature and relative humidity (p>0.05) but had a significant positive correlation with $CO_2$ and surrounding condition (p<0.05). Staphylococcus spp., Micrococcus spp., Corynebacterium spp., and Bacillus spp. were dominant genera and amounted to over 95% of total airborne bacteria identified in the investigated public facilities. Size distributions of four dominant genera did not observed inconsistently regardless of type of public facility.

• 보건의료산업학회지
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• 제7권1호
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• pp.145-153
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• 2013

The purpose of this study is to identify if dental patients discriminate between dental clinic and dental hospital and the related factors for choice of dental facilities. A self-administered questionnaire survey was conducted from March 21 to April 11, 2011. Among 430 dental patients who visited dental clinic or dental hospital twice or more in Daegu, 410 dental patients were included in analysis. A total of 73.6% of the dental clinic visitors recognized correctly that the visiting facility was dental clinic and 82.3% of dental hospital visitors did correctly. Therefore, it can be said that dental hospital visitors recognize better the type of dental care facilities they visit. When it comes to choosing the dental facility, there were not much differences between the clinic and hospital patients in this study. Human resources, facilities and equipment, service are factors for choosing dental clinic and dental hospital in order. However, modern dental facility and equipment were more important factor for patients to choose dental hospital than clinic. It will be necessary for dental clinic or dental hospital to develop its own specific service to fulfill dental patients' needs through further studies on factors for choosing dental facilities.

• Nuclear Engineering and Technology
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• 제54권10호
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• pp.3595-3603
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• 2022

Nuclear safety-class DCS is used for nuclear reactor protection function, which is one of the key facilities to ensure nuclear power plant safety, the maintenance for DCS to keep system in a high reliability is significant. In this paper, Nuclear safety-class DCS system developed by the Nuclear Power Institute of China is investigated, the model of reliability estimation considering nuclear power plant emergency trip control process is carried out using Markov transfer process. According to the System-Subgroup-Module hierarchical iteration calculation, the evolution curve of failure probability is established, and the preventive maintenance optimization strategy is constructed combining reliability numerical calculation and periodic overhaul interval of nuclear power plant, which could provide a quantitative basis for the maintenance decision of DCS system.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2006년도 정기학술발표대회 논문집
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• pp.249-252
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• 2006

2005년 8윌 현재 우리나라 공립 초 ${\cdot}$ 중 ${\cdot}$ 고교 교육시설은 9,007개가 운용되고 있다. 그러나 향후에는 인구감소 등으로 인하여 시설물의 신축보다는 기존시설물의 합리적인 이용에 더 큰 관심과 예산이 투입될 것으로 예상된다. 현재 교육시설물 유지관리는 예방보전이 아닌 사후보전에 의존하고 있고, 유지관리 조직 및 체계가 구축되지 못하여 시설물 노후화 및 예산낭비를 초래하고 있다. 이에 본 연구는 기존 공립학교 시설물의 유지관리를 검토하고, 기존 유지 관리 조직의 효율성을 극대화할 수 있는 개선방안 제시를 목적으로 한다.

• 근관절건강학회지
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• 제22권1호
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• pp.40-47
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• 2015

Purpose: The purpose of this study was to identify factors influencing on performance of preventive actions to be exposed to infection in emergency nurses. Methods: Participants were 200 emergency nurses working in a regional emergency medical center, 4 local emergency medical centers, and 5 local emergency medical facilities in B city. The data were analyzed with descriptive statistics, independent t-test, ANOVA, Scheff$\acute{e}$'s test, Pearson's correlation coefficients, and stepwise multiple regression analysis using SPSS/WIN 21.0 programs. Results: There was no difference in performance of preventive actions to be exposed to infection by socio-demographic and job-related characteristics. The results of stepwise multiple regression analysis showed that levels of perception of preventive actions to be exposed to infection (${\beta}$=.40, p<.001) and protective environment on exposure to infection (${\beta}$=.22, p<.001) were significantly associated with performance of preventive actions, explaining 26.3% of the variance. Conclusion: In conclusion, improving performance of preventive actions to be exposed to infection is important to protect emergency nurses from exposure to infection. Thus, efforts to enhance protective environment on exposure to infection and to improve perceptions of preventive actions to be exposed to infection are necessary to improve the performance of preventive actions in emergency nurses.

• 대한영양사협회학술지
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• 제23권2호
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• pp.180-191
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• 2017

The purpose of this study was to identity the probability of cross-contamination from the environment. For this, we examined foodservices at 20 universities/colleges for microbiological analysis of their working facilities and environment as well as their preventive equipment against cross-contamination. Seventy percent of the 20 foodservices were found to maintain one unified working area, which suggests high probability of contamination of food/utensils/equipment in the cooking area by pre-preparation or dish washing. According to the microbiological analysis, the hygiene acceptance ratio of working facilities in the clean zone was 70%, which was higher than the average 45% hygiene acceptance ratio of working facilities in the contamination operating zone. There was a significant difference in the total plate count (P<0.001) and coliform count (P<0.01), which demonstrates that work tables in the clean zone were in a good state compared to those in the contamination operating zone. In the contamination operating zone, refrigerator shelves had a high probability of cross-contamination. Regarding the floor surface and airborne microbes, cooking areas which should be maintained as clean zones had higher cross-contamination probability than those in the contamination operating zone. So corrective actions such as cleaning and sanitizing, keeping dry floors, lowered temperature and humidity, shoe disinfecting facilities, and checking concentrations, are necessary to manage floor surfaces and airborne microbes in the cooking area.

• 한국전자통신학회논문지
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• 제13권4호
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• pp.751-756
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• 2018

스마트 팩토리나 산업용 IoT에서는 공장 내 모든 기기와 장비가 인터넷으로 연결되어 모니터링 됨으로써, 장비나 기기가 고장 나기 전에 예지보전을 통해 설비의 다운타임을 줄이고, 생산성과 가용성을 높일 수 있다. 공장내 주요 설비의 이상 상태는 온도의 이상 상승, 진동과 소음의 변화를 수반하여 나타나게 되므로, 좁은 공간에 쉽게 설치하여 설비의 진동상태를 실시간으로 모니터링 할 수 있는 초소형 스마트 디바이스 개발은 매우 중요하다. 본 연구에서는 WiFi 기능이 있는 초소형 마이크로컨트롤러와 MEMS 가속도 센서를 이용하여 스마트 펙토리의 이상 고장 예지 및 건전성 관리를 위한 스마트 디바이스를 개발하고 그 성능을 분석하였다.

• Journal of Preventive Medicine and Public Health
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• 제21권1호
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• pp.10-20
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• 1988

각 의료기관에서 분만하는 산모와 신생아의 특성을 비교분석하고 의료기관별 산모와 신생아의 위험수준을 조사하여 특정 의료기관에서 관찰한 연구결과를 해석하는데 참고 자료를 제공하기 위하여 대구시내 3개 대학병원, 2개 종합병원,2개 개인의원, 1개 조산소, 그리고 1개 모자보건센터에서 1987년 4월 1일 부터 4월 30일 까지 1개월간(1개 대학병원은 2개월간) 분만한 산모 1,410명을 대상으로 산모의 연령, 교육수준, 의료비 지불방법, 산과력 및 특정의료기관을 선택한 이유를 면담 조사하고 병원기록지에서 신생아의 출생시 체중의 조사하였다. 대학병원과 종합병원을 이용한 산모의 평균 연령은 각각 27.5세, 26.7세로 조산소(25.4세)와 모자보건센터(26.1세)를 이용한 산모보다 많았고, 교육수준은 대학병원(평균 12.7년)과 종합병원(평균 12.2년) 산모가 조산소(평균 9.2년) 및 모자보건센터(평균 9.3년) 산모보다 월등히 높았다. 그리고 의료보험 대상자도 대학병원(78.1%)과 종합병원(82.9%) 산모가 개인의원(44.3%), 조산소(29.1%)나 모자보건센터(5.4%) 보다 많았다. 모자보건센터는 2번째 출산이 47.3%로 가장 많았으나 다른 의료기관은 모두 초산부가 $56.0{\sim}61.7%$로 제일 많았다. 산모의 산과력 비교에서는 대학병원 산모가 자연유산 경험율이 상대적으로 다른 의료기관 산모보다 높았고 사산 경험자도 소수였으나 조산소와 모자보건센터에서 분만한 산모는 사산 경험자가 1명도 없었다. 대학병원 산모의 경우 37주 이하의 조산아 출생율(11.4%)과 2,499gm이하의 저체중아 출생율($5.8{\sim}13.0%$)은 타 의료기관 보다 현저히 높았다. 이에 따라 제왕절개술에 의한 분만율은 의료기관간에 차이가 많았다. 결국 대구시내 대학병원과 종합병원에서 분만하는 산모들은 사회경제적으로 중, 상류층과 소득고하를 막론하고 고위험산모들이 많고 조산소와 모자보건센터는 저소득충의 산모 가운데 산과적으로 저위험군들이 많이 이용하고 있다. 따라서 특정 의료기관을 대상으로 조사한 자료를 해석하는데 많은 제한성이 있으며 전체 산모의 특성으로 일반화하는 것은 불가능한 것으로 생각된다.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회/대한산업공학회 2003년도 춘계공동학술대회
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• pp.105-117
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• 2003

The purpose of this research aimed at performing the easy design. and also the easy on-the-job application or the maintenance interval determination methodology by presenting the determining model or the optimizing maintenance interval in TBM for the preventive maintenance or facility TBM(time-based maintenance) as the preventive maintenance requires the adequate determination or the maintenance interval. The maintenance interval or TBM shall be applied differently for the each interval such as He patrol inspection, maintenance, overhaul inspection. exchange. And it is based on the composition level of equipment. The already informed theories or interval determination methodology for the patrol inspection. repair. and overhaul inspection are difficult for adopting because or the several restriction problems in applying the maintenance schemes as the theory So, the model for determining the optimizing exchange interval or part, maintenance interval of auxiliary machine, unit equipment etc. was presented to apply in the maintenance easily and appropriately.

• 농촌의학ㆍ지역보건
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• 제11권1호
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• pp.55-63
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• 1986

In general, patients' health seeking behaviours can be affected by three factors ; psychological factor, economic factor and health delivery system. This study was focused on how the psychological factor affect to health seeking behaviour influenced by the various attitude of residents toward medical resources in their community. A total of 306 households were sampled for the investigation among residents of Banwol-Eup which was an industrial city newly developed. The data has been collected by interview method using close ended questionnaire. The major findings are ; 1) the respondents' attitude toward medical institutions in their community has shown negative responses (rate of negative attitude (a) 81.3%- facilities (b) 40.7% medical expenses (c) 21.1%-kindness of employees of medical facilities (d)59.0%- the degree of thorough explanation to patient on medical examination (e) 58.2%-doctors' practical competency). Above all, they have shown negative response on doctors explanation on results of medical examination and doctors' practical competency. 2) The study indicated a significant difference in health seeking behaviour between the group of positive attitude and that of negative attitude. 3) A big difference between the above mentioned two groups was identified as the attitude toward sub dimension of practical competency.