• Journal of the Korean Institute of Rural Architecture
• /
• v.21 no.4
• /
• pp.37-44
• /
• 2019

A reduction in the number of high school students in Eup and Myeon districts is very severe. This issue leads to the problem with educational programs of school and an academic achievement gap. Therefore, the purpose of this study is to analyze the characteristics of areas and layout types of the floor plan of high school facilities in Eup and Myeon districts of Jeju Island where the number of students reduces and to provide a fundamental material for establishing school environments. The floor plan of school facilities was categorized into learning, support, common, and other areas and the characteristics of each area were analyzed. As a result, it was necessary to make spatial and facility improvements in common area and support area. The layout type of each area was classified into centralized type, distributed type, and mixed type, and then each type was analyzed. As a result, the main building had low points of the floor plan for learning area and common area. In order to respond to the number of students, it is required to establish reasonable spatial plan criteria and guidelines under the supervision of Office of Education and furthermore to make an effort to create futuristic educational facilities.

• Korean Management Science Review
• /
• v.19 no.1
• /
• pp.1-12
• /
• 2002

Performances of common zone with various sizes are examined for possible demand rate variations for an AS/RS. Common zone is a middle area located between the 1st class and the 2nd class to be used by the 1st class Items if the assigned racks are not enough. This area is designed to resolve the rack shortage problem associated with a particular class. In the previous researches, effect of demand rate variation is Ignored since flxed demand rate is assumed. It is found that rack shortage rate is decreased up to 67% of common zone size. However, no difference is found at above 70%. Waiting time tends to be longer with Increased common zone while travel time and throughput are not affected at all with the common zone sloe.

• Ocean and Polar Research
• /
• v.40 no.3
• /
• pp.127-143
• /
• 2018

This study analyzed the influence of climate change on the spawning ground area of the common squid, Todarodes pacificus. To estimate long term changes in the area of the spawning ground of the common squid, water temperature at 50 m deep that can be inferred from sea surface temperature (SST) based on both NOAA/AVHRR (1981.07-2002.12) and MODIS/AQUA (2003.01-2009.12) ocean color data was analyzed. In addition, five climate indices, Arctic Oscillation Index (AO), Siberian High Index (SH), Aleutian Low Pressure Index (ALP), East Asia Winter Monsoon Index (EAWM) and Pacific Decadal Oscillation (PDO) which are the main indicators of climate changes in the northwestern Pacific were used to study the relationship between the magnitude of the estimated spawning ground and climate indices. The area of the estimated spawning ground was highly correlated with the total catch of common squid throughout four decades. The area of the estimated spawning ground was negatively correlated with SH and EAWM. Especially, PDO was negatively correlated with the area of the spawning ground in the northwestern Pacific (r = -0.39) and in the southern part of the East Sea (r = -0.38). There was a positive relationship between the AO and the area of the spawning ground in the northwestern Pacific (r = 0.46) as well as in the southern part of the East Sea (r = 0.32). Temporally, the area of the winter spawning ground in the southern part of the East Sea in the 1980s was smaller than those areas in the 1990s and 2000s, because the area was disconnected with the western coastal spawning ground of Japan in the 1980s, while the area had been made wider and more continuous from the Korea strait to the western coastal water of Honshu in the 1990s and 2000s.

• Horticultural Science & Technology
• /
• v.32 no.4
• /
• pp.493-498
• /
• 2014

The objective of this study was to make growth and yield models for common ice plant (Mesembryanthemum crystallinum L.) using expolinear functional equations in a closed-type plant production system. Three-band radiation type fluorescent lamps with a 12-hours photoperiod were used, and the light intensity was $200{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$. Nutrient film systems with three layers were used for plant growth. Environmental conditions, such as air temperature, relative humidity and $CO_2$ concentration were controlled by an ON/OFF operation. Leaf area, shoot fresh and dry weights, light use efficiency of common ice plant as function of days after transplanting, accumulative temperature and accumulative radiation were analyzed. Leaf area, shoot fresh and dry weights per area were described using an expolinear equation. A linear relationship between shoot dry and fresh weights was observed. Light use efficiency of common ice plant was $3.3g{\cdot}MJ^{-1}$ at 30 days after transplanting. It is concluded that the expolinear growth model can be a useful tool for quantifying the growth and yield of common ice plant in a closed plant production system.

• The Korean Journal of Ecology
• /
• v.5 no.4
• /
• pp.143-153
• /
• 1982

Distributional pattern of vascular plant species in terms of species-area relationship and distances from their species pool on the 53 islands selected in the South Korea were studied. From the relationship between vascular plant species and area the equation of species-area was established as the follow: S=cA2 c=135.52 z=0.226 S; number of species A; area of island In the equation the Z value 0.226 is lower than those of any other localities reported in the world. Z value increased with the increasing distance from the species pool while C value decreased. The relationships of Z and/or C and distance from species pool, D, were established; Z=0.002D+0.176 C=-39.5logD+178.5 The tendency of common species decrease of them with the increasing islands was fifted to the Fisher's logarithm series. Common species 50% above was 39 species, including the most common species, Pinus thunbergii. Quotient of Similarity value by Sorensen (1948) on common species was relatively low i.e. 0.27∼0.47. It is noticeable for their vegetation conditions that the naturalized plant as a indicator of disturbance, for example Erigeron canadensis, was widely distributed.

• Journal of the Korean Institute of Rural Architecture
• /
• v.20 no.1
• /
• pp.37-44
• /
• 2018

The purpose of this study is to know how to make common space, find a type of it, and build a village landscape with it in countryside. There are five types of village including suburban according to typological locality in rural area. Each of them have remarkable common spaces that are combined with community identity and usage. They usually are located along with the street and lane of the village. Most of the villages I surveyed have common places for residents to rest, share, and meet together. Representatively, pavilion with symbolic tree we call Jeonja is very popular place to them, and village people also require public parking or pocket park in their modern life. I researched common places in ten communities in rural area so that I can suggest a way of community design through them. According to this research, there are three results. First, the common space of the village is placed to motivate emotional and attractive community design in the village. Second, the common space has an identity and landscape architectural relationship to build sustainable community. Third, countries' streets that I surveyed have four types, which are liner, tree, loop, and radiate patterns of lane. In line with those types, each one makes different and historical community landscape.

• Journal of Ginseng Research
• /
• v.15 no.1
• /
• pp.31-35
• /
• 1991

In order to know the optimum planting density under shading structures at different light intensity, We investigated the growth status, distribution of ginseng leaf area, correlation between planting density and root weight per plant and yield, correlation between leaf area index and root weight per plant and yield. According to the increase of planting density the leaf area per plant was decreased, but leaf area index (L.A.I) was increased. Ginseng leaf population at different lines under common straw shading were distributed mainly in frost lines but polyethylene net shading at 10fo light intensity were distributed equally in all lines. Optimum planting density in common straw shading at 5% light intensity was 55 plant per tan (90 cmX180 cm) and polyethylene net shading 81 10% light intensity was 60 plant per tan, in consideration of root weight and yield. Optimum leaf area index was 2.4 under common straw shading at 5% light intensity but was 2.7 under polyethylene net shading at 10% light intensity.

• Journal of the Korean association of regional geographers
• /
• v.22 no.2
• /
• pp.353-368
• /
• 2016

The importance of Gotjawal located in the mid-mountain area of Jeju Island has been emphasized in various aspects. This study aims to identify the value of Gotjawal as a life-cultural space. This will be illustrated by tracing the locals' previous pasturing activities and the management of village common pastures. Cheongsu Village Common Pasture and Jeoji Village Common Pasture in Cheongsu-Jeoji Gotjawal area, which are the study areas, have been actively used by local farmhouses since the establishment of the pastures in 1930's. In particular cattle were significant means for agriculture and transportation methods in 1960's and 1970's. The farmhouses were needed to breed cattle as one of the main economic means. Pasturing cattle on the village common pastures has developed a unique ranching culture. Furthermore, cooperative work of these farmhouses were performed. These include the establishment of ponds for water supply and the preparation of hay. Ranching facilities for pasturing were built on village common pastures and still remain in Gotjawal area. This has been used in the understanding of the locals' lives in the mid-mountain area of Jeju Island.

• Proceeding of Spring/Autumn Annual Conference of KHA
• /
• 2004.11a
• /
• pp.111-116
• /
• 2004

This study is aimed to be used as basic data to plan Korean style cohousing for double-income families in the future by studying their lifestyle, housing needs and housing awareness on cohousing. The results of the study are as follows. 1) As for the life style of the subject families, it was a housewife that mainly does the household affairs despite of the status of double-income family. Also, as for the social activity, almost half of the respondents said that the spending in child-care facilities was not sufficient and wanted to send their children to ones within their neighborhood. 2) As far as housing awareness on cohousing concerned, among specific items, the child care area, the household affairs division area, and participatory awareness of residents in housing planning and management got higher scores, while as for awareness on utilizing common space, using the common hobby rooms, promenades and benches, exercise facilities, common yard, and study rooms got higher scores. When asked about the necessity for cohousing in Korea, they gave very positive answers, but the answer to their willingness to reside in it was less positive. 3) Summarizing the housing needs on cohousing, it turned out that more people wanted to reside in suburban area with others having common grounds with them as for a desirable residence environment. They wanted the neighborhood to be composed of 10${\sim}$29 families, and medium-density semi-detached house occupied by owners. They wanted a mixture of independent management and entrust management for managing common facilities, and common meal once a week. They wanted indoor exercise facilities to be more extended than other common facilities, and the house of $100m^{2}{\sim}130m^{2}$ with 3 bedrooms, 2 bath rooms, and a large living room and dining room.

• Journal of the Korean Operations Research and Management Science Society
• /
• v.24 no.3
• /
• pp.39-47
• /
• 1999

It has been concluded that the performance of class-based storage policy is better than the performance of random storage policy in the literature. However, the rack shortage problem assigned to the 1st class items makes the decision hard to apply the class-based storage policy in practice. In this paper, a new common zone concept is introduced between two classes to resolve the problem with class-based storage policy. The common zone is the area to accept items from both classes. An AS/RS model is developed for computer simulation study and the effect of common area sizes with various AS/RS operation conditions is analyzed.