• 한국농공학회지
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• 제41권1호
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• pp.60-71
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• 1999

This study was performed to improve underirable warm greenhouse environment by fog cooling system in summer season. The resultsof droplet size analysis and cooling effects for fog cooling system are summarized as follows ; 1. At the pump pressure of 70kgf/$\textrm{cm}^2$ , the mean (SMD) drop size was 22.6${\mu}{\textrm}{m}$ and the maximum and minimum drop size was 45.68${\mu}{\textrm}{m}$ and 1.73${\mu}{\textrm}{m}$ , respectively, and almost all of the drop size was less than 40${\mu}{\textrm}{m}$. 2. The temperature of fog cooling greenhouse with 60% shading was dropped more than 2$^{\circ}C$ below the ambient temperature , while the greenhouse temperature without shading was 1$^{\circ}C$ higher than the ambient temperature. 3. It was found that fog spraying intervals were significantly influential on cooling effect. 4. When the greenhouse was ventilated sufficiently by natural vent system, green house temperature could be maintained by 2.5$^{\circ}C$ lower than the ambient temperature, while it was difficult to drop the greenhouse temperature below ambient temeperature without sufficient ventilation. 5. It was found that the temperature of experimental greenhouse could be maintained 3$^{\circ}C$ to 14$^{\circ}C$ lower that of control greenhouse though there were variations depending on experimental and weather conditions.

• KIEAE Journal
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• 제12권3호
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• pp.53-60
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• 2012

This research is an illustrative research to verify the thermo environmental change created after introduction of indoor pond through abridged model test and simulation analysis. Especially, temperature and comfort level are analyzed by adjusting factors like size of water space, distance length, and location. Summary of the research is as follows. First, the most effective size of water space is 7% of the indoor size, from southern side. Temperature reduction effect is about $1.6^{\circ}C$(5.5%), and for the comfort level, it is found that pmv index increases 8%. Second, based on the simulation of distance length with the sphere, it is more effective as it is close to the surface. If distance length is more than 0.5m, there is no effect on reduction of temperature and comfort level of indoor environment. Lastly, for the analysis by location of the introduced water space, simulation is undertaken by dividing the water space (14% of the indoor size) with front, side, rear and center types. Temperature reduction effect is found to be : front type ($-1.53^{\circ}C$), side type ($-0.82^{\circ}C$), rear type ($-0.44^{\circ}C$), center type ($-0.28^{\circ}C$), respectively. The indoor environment change data by introduction of water space, found in this research, is at initial phase, but it is deemed to be a basic data to refer when planning actual water space.

• 대한건축학회논문집:계획계
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• 제34권7호
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• pp.13-20
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• 2018

In this study, it was started with the research for improving the housing plan of the elderly and the aged housing environment. The spatial extent of the study is in Haedoji Village, Yeongdo, Busan, and the time ranged from the mid-1950s, when the Korean war broke out and the refugees started to settle, to the present as of August 2017. As Result, the size of the residential space per capita was overcrowded at $9.2m^2$ in the 1970s and 1980s, when the number of families was high, but since 2010, the size of the residential space currently living alone with only one elderly or couple was $29.2m^2$. In the future, it can be judged that the size of elderly housing can be expected to be envisioned within about $35{\sim}40m^2$ in consideration of the diversity of housing including table space in the 2LDK type.

• 한국임상수의학회지
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• 제30권4호
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• pp.258-263
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• 2013

The primary goal of this study was to compute sample sizes required to achieve the each aim of a variety of foot-and-mouth disease (FMD) surveillance programs, using a statistically valid technique that takes the following factors into account: sensitivity (Se) and specificity (Sp) of diagnostic test system, desired minimum detectable prevalence, precision, population size, and desired power of the survey. In addition, sample sizes to detect FMD if the disease is present and also as proof of freedom were computed. The current FMD active surveillance programs consist of clinical, virological, and serological surveillance. For the 2012 serological surveillance, annual sample sizes (n = 265,065) are planned at four separate levels: statistical (n = 60,884) and targeted (n = 115,232) at breeding pig farms and slaughter house, in together with the detection of structural proteins (SP) antibodies against FMD (n = 88,949). Overall, the sample size was not designed taking the specific aims of each surveillance stream into account. The sample sizes for statistical surveillance, assuming stratified two-stage sampling technique, was based to detect at least one FMD-infected case in the general population. The resulting sample size can be used to obtain evidence of freedom from FMD infection, not for detecting animals that have antibodies against FMD virus non-structural proteins (NSP). Additionally, sample sizes for targeted surveillance were not aimed for the population at risk, and also without consideration of statistical point of view. To at least the author's knowledge, sampling plan for targeted, breeding pig farms and slaughter house is not necessary and need to be included in the part of statistical surveillance. Assuming design prevalence of 10% in an infinite population, a total of 29 animals are required to detect at least one positive with probability of 95%, using perfect diagnostic test system (Se = Sp = 100%). A total of 57,211 animals needed to be sampled to give 95% confidence of estimating SP prevalence of 80% at the individual animal-level with a precision of ${\pm}5%$, assuming 800 herds with an average 200 heads per farm, within-farm variance of 0.2, between-farm variance of 0.05, cost ratio of 100:1 of farm against animals. Furthermore, 779,736 animals were required to demonstrate FMD freedom, and the sample size can further be reduced depending on the parameters assumed.

• 한국농촌건축학회논문집
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• 제16권3호
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• pp.53-60
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• 2014

The purpose of this paper is to seek the dwelling conditions for comfortable life like urban apartment with agriculture in farming area. In order to do above things, we divide types of people who is planning to 'return farm' and need to heavily research and analyze current status of use for farm house's each spaces include outside spaces. so this paper aimed that at first, divide types of farmhouse following agriculture condition for people who is living in rural and survey the present condition and problems by analyzing of present status of space use and draw the improvement plans for those. after then, finally make a architectural basic data for Rural houses plan. For the future, the main purpose of this paper is that make architectural provision possible by researching types and size of storage following sort and size of farm.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2003년도 생물공학의 동향(XIII)
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• pp.19-23
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• 2003

느타리버섯은 재배사 내의 환경 즉 온도 의해서는 자실체의 갓 색과 수량성, 발이정도, 생장속도, 외형적 특징 등이 변화하며, 이는 자실체의 품질이 큰 영향을 주는 것으로 보인다. 자실체의 생장에서 일어나는 호흡에 의해 발생하는 $CO_2$ 가스에 의해 대가 길고 갓이 작아지는 현상을 보이며, 고농도에서는 기형이거나 사멸될 수 있다. 자실체 조직을 형성하는 균사체는 부위별, 크기별로 약간의 차이를 보인다.

• 경영과학
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• 제17권2호
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• pp.55-65
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• 2000

This paper addresses a problem of machining route selection in multi-stage process with machine group. This problem is considered the subcontracting and the production in-house such as regular and overtime work. the proposed model is formulated as a 0-1 integer programming constraining the avaliable time of each machine for planning period and total overtimes. The objective of the model is to minimize the sum of processing cost, overtime cost, and subcontracting cost. To solve this model, a genetic algorithm(GA) approach is developed. The effectiveness of the proposed GA approach is evaluated through comparisons with the optimal solution obtained from the branch and bound. In results, the same optimal solution is obtained from two methods at small size problem, and the consistent solution is provided by the GA approach at large size problem. The advantage of the GA approach is the flexibility into decision-making process because of providing multiple machining routes.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2004년도 춘계학술발표대회 논문집
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• pp.161-166
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• 2004

In recent years, living space of modern society have vared, and new methods to build have been introduced using new building materials and interior finishing materials as the life level is enhanced. But these kinds of materials release some harmful substances to people. The most of people living in new apartment have headache and dizziness, and feel sick of the stomach, sleepiness, eye stimulus, concentration decrease and allergies. That called 'sick house syndrome'is becoming new society problem. The purpose of this study is to investigate the kinds and various problems of the interior finishing materials and to pursue improvement of living place and pleasant interior surroundings.

• 한국농촌건축학회논문집
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• 제1권3호
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• pp.27-34
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• 1999

The purpose of this study was to provide basic information on the rural house planning through the research on the use of the standard plans, architectural characteristics, importance of the planning points and housing satisfaction of the residents. 25 rural households scattered around Chungchong provinces-south and north- were surveyed for this study through the questionnaire method. The results of this study were as follows. The importance considered first was the low construction costs, and therefore the standard plans were not fully acknowledged and commonly used. Most real plans are the single-floor houses with 3 rooms, having 25-30 pyong magnitude. The planning points stressed highly were the storage space, convenience of the plan and size of the living room. Housing satisfaction level was high on direction of the facade, size of the living room and position of the bath/washing room, but low for the storage space.

• 한국주거학회:학술대회논문집
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• 한국주거학회 1990년도 학술발표대회논문집
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• pp.15-24
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• 1990

The purpose of this research is to provide the informations on built - in closets and storage in urban apartment houses in korea, considering the mode in living. Since the number of household goods and furniture might be related with the unit size of house(L D K) and district (Seoul. Pusan, Incheon) all data also were evaluated by the struclure of dwelling space and urban area in korea. For being importance of "Anbang" for indoor living, in which Znagnnng, Mungap, a dressing table and hanger are prepared. Preparation of new space in various ways. so many living tools are being used, for example the dinner table with adjustable supporters. A room is specially prepared for storage of season's living goods and furniture. It is very interest that the bed is still net popular, because that is considered as obstruction for the function of "Anbang", specially in small size apartment. Built - in closets and storage In "Anbang" is greatly needed, because most of activities of living involving sleeping are done In that space.