• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 1997.11a
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• pp.145-159
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• 1997

Cheju Island is the most attractive resort area in Korea for its exotic landscape, natural beauty, and traditional culture which is quite different from that of the mainland. Until now, most of the recreational facilities and accomodations have been constructed along the coastal areas. Recently, mid-mountain area has been under very heavy development pressure because it is suitable for new sites for tourism facilities and the land price in the coastal area is very high. The mid-mountain area is the land located 200-600m above the sea level. It is a major source of water supply for the island and has exotic scenic beauty, which cannot be found in mainland but it is the area very vulnerable to water pollution Therefore, it is very important to manage this area based on the concept of environmentally sound and sustainable development in order to meet ever increasing demand for the land development The purposes of this project are: 1) to establish Geographic Information System for the whole island, 2)to formulate environmentally sound landuse plat However, There has been accuracy of the original map, defining criteria of analysis, updating of the data were identified for future tasks to be studied.

• Proceedings of the KSR Conference
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• 2009.05a
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• pp.1308-1317
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• 2009

The mass transit networks in Korea, such as buses, metro and subway, are co-related and the number of transfer points, in which a lot of pedestrian movement is generated, are rising. The functions of the transfer centers, in which several travel modes cross at a point, have to include convenience and comfort for pedestrians using the transfer centers, and such functions can make transit a more attractive travel option and thus eventually contribute to increases in ridership. However, the guidelines for station layouts and their assessments in transfer stations are not suggested so far. So the pedestrian pattern data (pedestrian walking distances and times, pedestrian approaching distances and times, pedestrian walking paths in the inside of stations) was collected and analyzed. Based on the results of the analysis, the ways to measure the quality of comfort for those who using transfer facilities were suggested using the times that pedestrians consume to transfer from a travel mode to another. The walking time of pedestrians at the inside of stations was also measured by pre-selected pedestrian pathways as the guidelines for station layout assessment in transfer facilities.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.29 no.5D
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• pp.597-604
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• 2009

The mass transit networks in Korea, such as buses, metro and subway, are co-related and the number of transfer points, in which a lot of pedestrian movement is generated, are rising. The functions of the transfer centers, in which several travel modes cross at a point, have to include convenience and comfort for pedestrians using the transfer centers, and such functions can make transit a more attractive travel option and thus eventually contribute to increases in ridership. However, the guidelines for station layouts and their assessments in transfer stations are not suggested so far. So the pedestrian pattern data (pedestrian walking distances and times, pedestrian approaching distances and times, pedestrian walking paths in the inside of stations) was collected and analyzed. Based on the results of the analysis, the ways to measure the quality of comfort for those who using transfer facilities were suggested using the times that pedestrians consume to transfer from a travel mode to another. The walking time of pedestrians at the inside of stations was also measured by pre-selected pedestrian pathways as the guidelines for station layout assessment in transfer facilities.

• Proceedings of the KSME Conference
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• 2007.05b
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• pp.2989-2994
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• 2007

Gas hydrates are ice-like crystalline compounds that form under low temperature and elevated pressure conditions. Although hydrate formation can pose serious flow-assurance problems in the gas pipelines or facilities, gas hydrates present a novel means for natural gas storage and transportation with potential applications in a wide variety of areas. An important property of hydrates that makes them attractive for use in gas storage and transportation is their very high gas-to-solid ratio. In addition to the high gas content, gas hydrates are remarkably stable. The main barrier to development of gas hydrate technology is the lack of an effective method to mass produce gas hydrate in solid form. The first objective of this study is investigating the characteristics of gas hydrate formation related to several factors such as pressure, temperature, water-to-storage volume ratio, concentration of SDS, heat transfer and whether stirred or not respectively. And the second objective is clarifying the relation between the formation efficiency and each factor in order to find the proper way or direction to improve the formation performance.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2009.11a
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• pp.82-85
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• 2009

Amongst society's transitional presuppositions towards the future, an aging population is the most significant matter. Korea has entered the aging society in 2000 and will face the aged society by 2018, which is the fastest time that takes from the aging society to the aged society in the world. Korea requires immediate attention to devise a countermove. U.S entered aging society in 1942 since then have developed various types of elderly housing. Recently, university-affiliated CCRC became an attractive alternative. Therefore, it is necessary to study a successful case of elderly housing. This study aims to explore the key features of a university-affiliated CCRC as an alternative socially integrated aging friendly community. Oak Hammock at the University of Florida was selected for this research as a successful case. The method of this is field visit case study. The study finds that University-affiliated CCRC has a lot of benefits for both university and CCRC. Oak Hammock members can access university's facilities and university provides a life-long learning experience and other programs. Oak Hammock provides internship, volunteer and parttime job opportunities and offer advice to students as a mentor. This study is expected to provide a implication in developing elderly housing of Korea.

• Korean Journal of Community Nutrition
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• v.8 no.4
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• pp.566-573
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• 2003

The purpose of this study was to assess how the changes in the food services environment on patients satisfaction with the hospital food service. Statistical data analyses were completed using the SPSS 11.0 program. The results can be summarized as follows: The flow line and environment of the food services in the hospital were improved through remodeling, which included the replacement of all cooking utensils, ventilation facilities and material storages, the purchase of a combi steamer, and the change of meal carts and trays. After the remodeling, the hospital food service was improved so that it provided spoons at each meal, diversified the menu utilizing the combi steamer, served event meals three times a week as well as water boiled with burned rice in the morning twice a week. In addition, various types of tableware were used in the table settings to produce attractive visual effects. Among the 10 items included on the patient satisfaction questionnaire, ″satisfaction with offered menus″ (p < 0.01) showed significantly higher scores before the remodeling. ″cooking/seasoning of food″, ″amount of meals″ and ″taste of meals″ were not statistically significant, but showed increased satisfaction after the remodeling. However ″temperature of food″, ″cleanliness of clothes and features″ and ″satisfaction with meal times″ were not statistically significant, but showed decreased satisfaction after the remodeling. (Korean J Community Nutrition 8(4) : 566-573, 2003)

• Culinary science and hospitality research
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• v.14 no.2
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• pp.293-302
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• 2008

The objective of this study is to suggest development methods of marine tour complexes by specializing and modernizing the renowned Jagalchi Fish Market. This study tries to suggest the ways of overcoming limitations of the traditional market place and making a unique tourism destination with affluent attractive culture elements. To preserve its position as the most famous fish market in Korea, Jagalchi market needs to more differentiate its position over competitors. To do that, it needs to avoid over-lapping of product categories among different sectors and specializing each zone according to the assigned theme. Improving tourism environments by expanding entertaining aspects, building landmark facilities and a seaside park, and tourism infrastructures. In addition, the development scheme needs to be planned unified with other city development plans to create a unified image, and a connection program with other tourism resources surrounding the target area needs to be created in order to pursue synergy effects. In the aspect of food, a large seafood center which offers various seafood from all around the world, a traditional night market street, various theme restaurants can be suggested. Successful development of the Jagalchi marine tour complexes not only has ripple effects on the region's culture, society, and other related industries but directly influences related regional tourism and commercial industry.

• International Journal of CAD/CAM
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• v.9 no.1
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• pp.111-120
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• 2010

In this paper, we propose a volume rendering method using grid computing for large-scale volume data. Grid computing is attractive because medical institutions and research facilities often have a large number of idle computers. A large-scale volume data is divided into sub-volumes and the sub-volumes are rendered using grid computing. When using grid computing, different computers rarely have the same processor speeds. Thus the return order of results rarely matches the sending order. However order is vital when combining results to create a final image. Job-Scheduling is important in grid computing for volume rendering, so we use an obstacle-flag which changes priorities dynamically to manage sub-volume results. Obstacle-Flags manage visibility of each sub-volume when line of sight from the view point is obscured by other subvolumes. The proposed Dynamic Job-Scheduling based on visibility substantially increases efficiency. Our Dynamic Job-Scheduling method was implemented on our university's campus grid and we conducted comparative experiments, which showed that the proposed method provides significant improvements in efficiency for large-scale volume rendering.

• Advances in Energy Research
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• v.1 no.2
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• pp.127-146
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• 2013

Torrefaction technologies convert assorted biomass feedstocks into energy-concentrated, carbon neutral fuel that is economically transported and easily ground for blending with fossil coals at numerous power plants around the world without needs to retrofit. Utilization of torrefied biomass in conventional electric generating units may be an increasingly attractive alternative for electricity generation as aging power plants in the world need to be upgraded or improved. This paper examines the economic feasibility of torrefaction in different scenarios by modeling torrefaction plants producing 136,078 t/year (150,000 ton/year) biocoal from wood and corn stover. The utilization of biocoal blends in existing coal-fired power plants is modeled to determine the demand for this fuel in the context of emerging policies regulating emissions from coal in the U.S. setting. Opportunities to co-locate torrefaction facilities adjacent to corn ethanol plants and coal-fired power plants are explored as means to improve economics for collaborating businesses. Life cycle analysis was conducted in parallel to this economic study and was used to determine environmental impacts of converting biomass to biocoal for blending in coal-fired power plants as well as the use of substantial flows of off-gasses produced in the torrefaction process. Sensitivity analysis of the financial rates of return of the different businesses has been performed to measure impacts of different factors, whether input prices, output prices, or policy measures that render costs or rewards for the businesses.

• Journal of Korean Society of Water and Wastewater
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• v.27 no.5
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• pp.649-659
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• 2013

Real time control (RTC) can be broadly defined as a system that dynamically adjusts the operation of facilities in response to online measurements in the field to maintain and meet the operational objectives, both during dry and wet weather conditions. RTC adds a dynamic component that is actively adjusted in real time based on system conditions. In terms of reducing or eliminating sewer flooding, CSOs and/or managing flows, implementation of RTC has various benefits to sewer system operation. It has been emerging as an attractive approach, but related elements (such as framework for the application, its components and equipments, aspects to be considered) towards its application on sewer systems have not been throughly introduced so far. The main goal of this study is to review several applications of RTC and firm guidelines published abroad, and finally to provide a framework for the proper application of RTC on sewer systems.