• Proceedings of the Korea Concrete Institute Conference
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• 1993.04a
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• pp.22-25
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• 1993

The study of recycled aggregate concrete in which demolition waste is utilized to produce aggregate for new concrete, can contribute to the solution of two problems, The first is the shortage of aggregate from river, and the second is the waste disposal problem. In comparison with natural aggregate concrete, recycled aggregate concrete shows reductions in compressive strength , tensile strength, vending strength , shear strength and increases in drying shrinkage and creep. Recycled aggregate concrete may also be less durable due to increase in porosity and permeability. The purpose of this study is to investigate and analyze the variation of engineering properties according to replacement proportion of recycled aggregates and applicability of non-destructive test in the gardened recycled concrete.

• Proceedings of the Korea Concrete Institute Conference
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• 1993.04a
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• pp.16-21
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• 1993

The study of recycled aggregate concrete in which demolition waste is utilized to produce aggregate for new concrete, can contribute to the solution of two problems. The first is the shortage of aggregate from river, and the second is the waste disposal problem. In comparison with natural aggregate concrete, recycled aggregate concrete shows reductions in compressive strength, tensile strength , vending strength, shear strength and increases in drying shrinkage and creep. Recycled aggregate concrete may also be less durable due to increase in porosity and permeability. Therefore, the purpose of this study is to analyze the applicability of recycled concrete in the influence of a substitute ratio of recycled sand gravel.

• Proceedings of the KIEE Conference
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• 2007.11b
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• pp.243-245
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• 2007

There are some rebate programs for energy efficient appliances, which are lightings, vending machines, ASDs, motors, transformers, pumps, to reduce national energy consumption in Korea. Among these appliances, motors are of the essential target in the programs because these take about 64% of electrical energy consumption nationally. In this paper reasonable rebate levels are proposed using an advanced diffusion model and avoided cost analyses.

• Korean Institute of Interior Design Journal
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• no.13
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• pp.37-44
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• 1997

The aim of this study is to find out the changes that have happened to korea DA-BANG(tea-room). This survey was carried out from 1876 to 1997 and the subject of this study is korea DA-BANGS in Seoul. Following conclusions were obtained from this study. 1) DA-BANG came into being from Koryo ages and more DA-BANGS from 1920's. 2) DA-BANG has changed in the following order : GAEWHA DA-BAHG(that were used to meet, communicate and negotiate foreigners when out country was opening ports), MUNWHA DA-BANG(that were used cultural space for example, exhibitio, display etc.), SEANGWHAL DA-BANG(the place that used a part of living space ; meeting friends to make appointment, etc.), SANGUB DA-BANG(commercial tea-room ; the place that makes money.) 3) Considering early MUNWHA DA-BANG, we can regard the beginning of korea interior architecture as 1920's. 4) The decline of DA-BANG is due to the increase of vending machine, expensive tea, costly rent, employee's dear wages and customer's needs that pursues westernization and convenient life as well as the moodof more comfortable tea-room(for example, fresh air, agreeable mood etc.).

• Journal of the Korean Institute of Landscape Architecture
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• v.25 no.3
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• pp.1-11
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• 1997

This study aims to estimate the relative importance of quality management items through the defect analysis in the landscape construction process. The RIQMI are decided by the defect coefficient and it's cause weight. The defect items in the landscape construction process were classified by 56 items based on the classification form of '96 landscape architectural construction standard and the cause pattern were categorized 4 types as design, material, construction, and environment factors. To analyze the defect coefficient and the aucse weight by defect, the researcher surveyed the questionnaires on the 103 engineers and the 31 experts on the landscape architectural construction. The result of this study are as follows. The relative importance by facilities pattern turn out to be much higher construction, material fator than design. environment factor in wood facilities, paving facilities, and steel facilities, the RIQMI is very high in timber crack, timber vending, faulty of timber against decay, welding faulty of steel facilities in material factor, and timber crack, faulty of timber against decay, finish faulty of steel facilities, welding faulty of steel facilities in construction factor.

• Korean Management Science Review
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• v.26 no.1
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• pp.171-182
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• 2009

We consider the inventory replenishment problem and the vehicle routing problem simultaneously in the vending machine operation. This problem is known as the inventory routing problem. We design a memory cell in the clonal selection algorithm. The memory cell store the best solution of previous solved problem and use an initial solution for next problem. In general, the other clonal selection algorithm used memory cell for reserving the best solution in current problem. Experiments are performed for testing efficiency of the memory cell in demand uncertainty. Experiment result shows that the solution quality of our algorithm is similar to general clonal selection algorithm and the calculations time is reduced by 20% when the demand uncertainty is less than 30%.

• 한국IT서비스학회:학술대회논문집
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• 2003.05a
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• pp.387-394
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• 2003

웹 서비스는 기업 간 통합의 문제를 저렴하게 해결해 줄 있는 획기적인 대안으로 소프트웨어 분야에서 크게 주목받고 있다. 웹 서비스는 아직까지 시장의 선각수용자(early adopters) 단계에 위치하고 있기 때문에, 그동안의 선행 연구들은 웹 서비스 아키텍처의 특정한 프로토콜 기술들에 초점을 맞추었을 뿐, 비즈니스 관점에서 전체적인 활용방안을 제시하지 못하였다. 본 논문에서는 그 구체적인 활용방안으로 음료수 자판기의 판매 데이터 제공 웹 서비스인 VMWS(Vending Machine Web Services)를 구현하였다. 그 결과, 기업은 VMWS처럼, 기존의 비즈니스 모델을 웹 서비스로 전환하는 접근방법으로부터 출발해야 하며, 그러한 비즈니스 모델들 중 가장 크게 네트워크 효과(network effect)를 발휘할 수 있는 허브(hub)적인 성격을 갖는 데이터들이나 비즈니스 기능들을 발굴하여 판매전략을 수립하되, 반드시 명심할 점으로, 기존의 IT 아키텍처와 조화를 이룰 수 있도록 단순하게 시작하여 점진적으로 웹 서비스의 도입전략을 추진해야 한다는 시사점을 얻을 수 있었다.

• Korean Journal of Clinical Pharmacy
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• v.3 no.1
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• pp.21-30
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• 1993

The contents of caffeine in caffeine containing products in Korea, i.e., coffee. tea, cocoa and cola, and the individual pattern of consumption of caffeine containing beverages were studied to know the pattern of caffeine consumption. The correlation in between the amount of caffeine consumption and the obesity were also investigated. In results, the average contents of caffeine in the instant coffee was $31.8\pm4.4mg/g(mean{\pm}SD)$. The amount of caffeine in coffee were $68.2\pm13.0\;mg/cup$ in the vending machine coffee, and $76.6\pm12.1\;mg/cup$ in the coffee shop coffee. Average daily caffeine consumption per person was investigated to be 128mg with the wide range of 26mg-341mg. There was no correlation in the amount of daily caffeine consumption and the obesity.

• Journal of Industrial Technology
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• v.27 no.B
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• pp.3-7
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• 2007

Ultraviolet light(UV-C, wavelength: 200~280nm) is employed profitably for sterilizing drinking water. For most water serving apparatus such as a water purifier, a water cooler and heater, a coffee vending machine and etc., pre-sterilized water may be contaminated secondarily with bacillary inhabitation in a container before serving. In consideration of this problem, a household water tap which is equipped with a sterilization/Purification device in combination with non-contact UV-lamp, was designed to sterilize and purify water at the last outlet just before serving. Hopefully this simple but creative item may be commercialized for household and public use.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2008.05a
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• pp.86-89
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• 2008

In this paper, bus station design is presented as a component of public design to develop the integrated city public image of Daejeon Metropolitan City through the study of city characteristics and the direction of future development. Design concept is the mutual understanding of public image and human centered sense, and comfortable bus station which is correspond with future development direction and applicable for digital informationization is selected. Design components are bus shelter, information board, bench, vending machine, a wastebasket, billboards and so forth.