• 한국BIM학회 논문집
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• 제7권4호
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• pp.8-20
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• 2017

When it comes to set up the BIM through the reverse engineering, the level of detail(LoD) required for finalized outcomes is different from each purpose. Therefore, it is necessary to establish some concrete criteria which describe the definition of LoDs on 3D modeling for the purpose of each reverse engineering. This research shows the criteria of the 1) positional accuracy, 2) generalization level, 3) scale level, 4) scope of description, and 5) the area available for application by classifying LoD from 1 to 6 on 3D modeling for each purpose of reverse engineering. Moreover, through applying those criteria for the 3D point cloud dataset of building made by terrestrial LiDAR, this research finds out the working hour of 3D modeling of reverse engineering by each LoDs according to defined LoD criteria for each level. It is expected that those findings, how those criteria of LoD on reverse engineering are utilized for modeling-workers to decide whether the outcomes can be suitable for their budget, applicable fields or not, would contribute to help them as a basic information.

• Journal of Power Electronics
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• 제8권4호
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• pp.371-380
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• 2008

This paper describes the Utility Interactive PV (UIPV) system which can improve the peak-cut effect by adding an energy storage device of batteries to the power converter. The proposed system has three possible operation modes depending on relative condition of PV output, which can have the power shaping function covering the peak power for 3 hours. A new power circuit and an application algorithm have been applied to the UIPV system which is based on working PV system during a 3-hour peak time. The energy relationship by the proposed system is analyzed theoretically and experimentally. The proposed system is evaluated at the viewpoint of cost and total spacing, which enables the proposed UIPV system to have the reduction of the peak power demand and hence to improve the power capacity of peak cut.

• Journal of Astronomy and Space Sciences
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• 제17권2호
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• pp.211-220
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• 2000

Korea Astronomy Observatory(KAO) is working to retrofit its 1m robotic telescope in collaboration with a company (ACE, Astronomical Consultants & Equipment). The telescope system is being totally refurbished to make a fully automatic telescope which can operate in both interactive and fully autonomous robotic modes. Progress has been made in design and manufacturing of the telescope mount, mechanics, and optical performance system tests are being made for re-configured primary and secondary mirrors. The optical system is designed to collect 80% incident light within 0.5 arcsec with f/7.5 Ritchey-Chretien design. The telescope mount is an equatorial fork with a friction drive system. The design allows fully programmable tracking speeds with typical range of 15 arcsec/sec with accuracy of $\pm5$ arcsec/hour. The mount system has integral pointing model software to correct for refraction, and all mechanical errors and misalignments. The pointing model will permit positioning to better than 30 arcsec RMS within $75^{\circ}$ from zenith and 45 arcsec RMS elsewhere on the sky. The software is designed for interactive, remote and robotic modes of operation. In interactive and remote mode the user can manually enter coordinates or retrieve them from a computer file. In robotic mode the telescope controller downloads the coordinates in the order determined by the scheduler. The telescope will be equipped with a CCD camera and will be accessible via the internet.

• Agricultural and Biosystems Engineering
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• 제5권2호
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• pp.40-44
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• 2004

This study was conducted to solve the problem of spinach harvesting done by manpower at the outdoor field during the cold winter season. Prototype spinach harvester was designed to dig, pick-up, and collect in a continuous operation for harvesting outdoor field-planted crawling type spinach. In the field test, two types of blades (Type A : angle of $150^{\circ}$, Type B : straight) were used for measuring the cutting loads of spinach and chain conveyor with lugs was used for picking up the root cut spinach. Prototype's vibrating blade reduced the digging power of the fixed blade by $46\%$. The loss was also very little ($0.7\%$) with a digging depth of 4 cm, an oscillation frequency of 748 rpm, and an oscillation distance of 33 mm. The working performance of the prototype spinach harvester was 38 hour/ha resulting to $96\%$ labor cost reduction compared to the conventional harvesting.

• 대한지역사회영양학회지
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• 제6권5호
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• pp.734-743
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• 2001

Iron deficiency anemia is a worldwide public health problem relevant to unsound nutritional practice. While the prevalence of iron deficiency anemia is very common among pregnant women, appropriate nutritional service programs to improve the iron status are lacking in Korea. In an attempt to develop a nutritional screening tool to separate the high-risk subjects of iron deficiency, we carried out a nutritional survey for 115 Korean pregnant women whose gestational age ranged from 13 to 24 weeks. Each subject was interviewed with questionnaires for general characteristics and dietary habits. Food intake was measured by 24-hour recap method and 2 day record. Fasting blood was drawn for measuring hemoglobin and serum ferritin. It appeared that half of the pregnant women belonged to the anemia group and had insufficient dietary habits to provide adequate amounts of dietary iron. The first gravida and the working women had better hematological iron indicators than the second or more gravida and the housewives. It also appeared that women who had bigger family size and lower BMI in pre-pregnancy had poorer iron status. Among the food consumption habits, fruit dependent dietary habit was related to poor iron status. Sufficiently consumed green leafy vegetable and appropriate amount of food before morning sickness were positive factors of iron stares. Our results indicated that parity, BMI, current job, family size, food habits including consumption of fruits, green & yellow vegetables, and food habits before the onset of morning sickness are significant factors to contribute the Fe deficiency anemia during pregnancy.

• 한국콘텐츠학회논문지
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• 제11권5호
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• pp.338-346
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• 2011

본 연구의 목적은 사회복지근무자의 이직의도 요인을 분석하여, 이들의 이직의도를 낮추는 방안을 모색 하고자 한다. 조사결과 이직의도가 있다는 응답이 더 높게 나타났으며, 이용시설과 기타시설에서 이직의도가 있다는 비율이 더 높게 나타났다. 이직의도 이유는 새로운 일에 도전하고 싶어서, 근무조건 열악(과도한 업무), 낮은 임금수준 등의 순으로 나타났으며, 생활시설과 이용시설 모두 근무조건 열악과 낮은 임금수준의 비율이 상대적으로 높게 나타났다. 이직 희망분야에서는 타 분야로의 이직보다는 사회복지분야 내에서의 이직을 더 희망하는 것으로 나타났다. 연구결과를 중심으로 사회복지근무자들의 이직의도를 낮추는 방안으로 근로시간 단축, 복리후생제도의 확대시행, 자기계발과 교육 프로그램의 다양화, 처우 및 지위향상을 위한 노력이 요구된다.

• 대한간호학회지
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• 제47권5호
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• pp.689-699
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• 2017

Purpose: This research aimed to investigate the effects of a cognitive rehearsal program (CRP) on workplace bullying among nurses. Methods: A randomized controlled trial was performed. Participants were 40 nurses working in different university hospitals in B city, South Korea. The experimental group was provided with a 20-hour CRP comprising scenarios on bullying situations, standard communication, and role-playing. To evaluate effects of the CRP, we measured interpersonal relationships, workplace bullying, symptom experience, and turnover intention at preand post-intervention. Follow-up effect was measured in the experimental group only at 4 weeks after the intervention. Results: After the intervention, there were significant differences in interpersonal relationships (F=6.21, p=.022) and turnover intention (F=5.55, p=.024) between experimental and wait-list groups. However, there was no significant difference in workplace bullying or symptom experience between the 2 groups. The beneficial effects on interpersonal relationships and turnover intention lasted at least up to 4 weeks after CRP. Conclusion: The CRP for workplace bullying improves interpersonal relationships and decreases turnover intention. So it can be utilized as one of the personal coping strategies to reduce the the turnover among nurses. Further studies on the effects of unit- or hospital-based CRP and on the long-term effects of CRP are necessary.

• 대한가정학회지
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• 제42권9호
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• pp.213-235
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• 2004

This study investigated the Infant Institutional Household (IIH) for the care of infants. The purpose was to provide basic information needed to raise Korea's birth rate and to design higher level nursing facilities which can satisfy working mothers who are presently offered few facilities. To achieve this purpose. IIM was divided into 7 sub-functional stations : planning-management, marketing, materials-management, business-management, man power-management, financial-management and control etc. The results are as follows : 1. Kind of facilities : Infants'(full responsibility) Institutional Household. 2. Number of infants : total 19 babies. 3. Ratio of infants to teachers : one to one (Contained assistance teachers) 4. Installing region : convenient traffic place - in Seoul. 5. Building site and kind : the first floor space of 60pyung (198㎡) in the Apartment complex which . contained many apartments of small size. 6. Nursing time : 24-hour day care in weekdays Age of object : age from 1month to 24months old babies(after his/her birth). 7. Kind of services and Cost : mother-like care, cost includes nursing-fee, a deposit and admission-fee. 8. Economic Condition and managing direction : pursuit limited profits with nursing-fee, admission-fee, a loan and national (or self -government of direct) supplementary funds.

• 한국직업건강간호학회지
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• 제13권1호
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• pp.59-69
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• 2004

Purpose: The purpose of this study is to investigate cardiovascular risk factors, their interaction, degree of cardiovascular risk and to analyze the effects of related fcators in women workers. Method: A Survey was conducted in 529 employed women in 36 workplaces from October 25, 2002 to December 12, 2002. The survey was distributed and collected by occupational health nurses working at work sites. Result: The result were as followings; The female workers had about 2 cardiovascular risk factors. 82.1% were not exercising more than 3 times a week, 45.9% reported noise-exposure, 38.2% had higher perceived stress, 25.4% were shift-workers, 10.4% were long-time workers(over 60hour/week), 4.4% were frequent drinker, 3.9% were current smokers. The rate of obesity in measured as BMI greater than 25 was 4.0%. Many cardiovascular risk factors were correlated. Job-related and health behavior-related cardiovascular risk factors were correlated statistically. Expose to noise, reported perceived stress were powerful predictors in their degree of cardiovascular risk. Conclusion; Based on the results of this study, cardiovascular prevention programs for women in workplace should be designed as a multifactorial approach, which include stress management and job-related risk factor management as essential components to be effective in addressing the needs of the population.

• 한국직업건강간호학회지
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• 제18권1호
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• pp.14-21
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• 2009

Purpose: This study was performed to investigate the effect of shift work on diurnal blood pressure (BP) pattern in nurses. Method: We studied 20 healthy nurses engaged in 3 shift work. 24-hour ambulatory BP monitoring was performed to each nurse two times during the day and night shift. Five nurses were excluded because of inadequate BP measurement. Results: All subjects were female. The mean age was 27.4 years (range: 23-33 years) and mean body mass index was 19.7 Kg/$m^2$ (range: 18.0-21.2 Kg/$m^2$). The changes of systolic BP ($17.8{\pm}9.1$ vs. $13.2{\pm}4.7%$, p=0.031), diastolic BP ($22.3{\pm}8.7$ vs. $17.3{\pm}9.0%$, p=0.061), and heart rate ($25.2{\pm}5.2$ vs. $12.5{\pm}8.7%$, p=0.001) during the sleeping period were decreased after a night shift compared with day shift. The non-dipper group significantly increased from 20% to 40% after a night shift (p=0.018). Conclusion: Working night shift is significantly associated with non-dipper status in nurses.