• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.27 no.4
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• pp.201-206
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• 2015

The MVR was theoretically modeled by performing the polytropic process, and the polytropic coefficient was estimated by using the performance curve provided by the manufacturers. The TVR was investigated by applying the conservation equations to the movement of fluids inside the TVR. The size of the nozzle and diffuser was determined. Theoretical MVR and TVR modeling was verified by comparing the results of the model with the available design data. Besides, the effects of multi-staging of the MVR on power consumption, and the effects of suction and primary pressure on the sizing of TVR were investigated.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2008.11a
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• pp.188-192
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• 2008

The Purpose of this paper is to analyze of community space of high-rise housing as a basic research towards developing a model of spacial convergence. For this, 10 cases of high-rise housing complexes are compiled. Research methods are as follows. First, through the analysis of 10 high-rise housing complexes, the types of community space program are categorized by concepts. Second, community space plans are analyzed by floor. The results of this study are summarized as follows. First, through the analysis of 10 cases, the types of community space program are classified 8 categories : Culture, Health, Leisure, Education, Life-style Assistance, Business Assistance, Open Space, Commercial Facility. Second, community space plans are arranged at the lower floor of the building at a high ratio. Third, the types of convergence model for community programs are suggested by 4 categories : Human, Time, Experience, Local Community. Fourth, community space configuration is categorized by 4 types.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.29 no.4
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• pp.156-168
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• 2016

Objectives : The purpose of this study is to report the effectiveness of Gagamsunbangpaedoktang on 30 Chronic Urticaria patients. Methods : Total 30 chronic urticaria patients, who has visited korean medical clinic from 1st July 2014 to 29th February 2016 were analyzed by using Urticaria Activity Socre(UAS). Subanalysis of UAS was done according to disease period. Results & Conclusions : UAS score was improved as a result of Gagamsunbangpaedoktang treatment. Gagamsunbangpaedoktang can be effective treatment for Chronic Urticaria.

• Journal of Electrical Engineering and Technology
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• v.3 no.4
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• pp.460-467
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• 2008

This paper presents a new numerical algorithm for the fault location estimation and arcing fault detection when a single-phase arcing ground fault occurs on a transmission line. The proposed algorithm derived in the spectrum domain is based on the synchronized voltage and current samples measured from the PMUs(Phasor Measurement Units) installed at both ends of the transmission lines. In this paper, the algorithm uses DFT(Discrete Fourier Transform) for estimation. The algorithm uses a short data window for real-time transmission line protection. Also, from the calculated arc voltage amplitude, a decision can be made whether the fault is permanent or transient. The proposed algorithm is tested through computer simulation to show its effectiveness.

• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.2034-2038
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• 2007

물관련 정보화에 대한 우리나라의 수준을 평가하기 위해 건설교통부 및 산하기관에서 구축되어 운영되고 있거나 현재 구축 중인 14개 시스템에 대한 현황, 연혁, 구조 등을 조사하였으며 미국, 영국, 일본의 정보화 관련 조직과 시스템에 대한 조사 및 분석을 통해 우리나라의 물관련 정보화가 향후 지향해야 할 방향을 제시하였다. 관련 시스템 및 정보화 환경에 대한 조사성과를 바탕으로 우리나라의 물 관련 정보화 수준을 4가지 정보화 영역별(수자원정보화, 물관리정보화, 하천정보화, 수문정보화)로 평가하였고, 기본원칙 다섯 가지(공공성, 정확성, 정시성, 다양성, 연계성)를 설정하여 정량적인 지표로 결과를 제시하였다. 분석결과, 4개 정보화 영역에 대한 기본전략을 수립할 경우 향후 목표로 하고 있는 수준에 도달하기 위해서는 정확성, 정시성, 다양성의 원칙에 부합하는 지표들에 대한 시스템에 우선 집중하여야 할 것으로 나타났으며, 다음으로는 공공성 및 연계성 부분에 집중함으로써 향후 다양한 기능을 갖춘 물관련 정보 종합시스템의 구축을 추진해야 할 것으로 나타났다.

• Journal of Information Technology Services
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• v.11 no.4
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• pp.51-67
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• 2012

In recent years, research has begun to place greater emphasis on the strategic use of IT in seeking to build firm's capability, thus innovating firm's business value. Many leading firms have been put efforts to formulate and implement IT governance (ITG) structures, processes, and mechanisms for firm's IT activities. However, recent literatures reviews found that ITG framework have been discussed independently rather than in an integrated and on convergent manner failing to provide comprehensive conceptual framework. The objective of this paper is therefore, to develop a conceptual framework that enable to conduct a comparative ITG case studies. The proposed framework, developed by one of author, has extensively applied in real case study to validate its usefulness and also aims to contribute practitioners to understand how well IT principles are formed within the organization as well as corelate with ITG objectives and ITG execution.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.30 no.4
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• pp.176-183
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• 2017

Objectives : The purpose of this study is to report the effect of Hwangryunhaedoktang-Gamibang on Postmenopausal Hot Flushes. Methods : This case study was done on 3 Postmenopausal Hot Flush patients who have visited Korean Medicine Clinic. Hwangryunhaedoktang-Gamibang was prescribed to all 3 patients and evaluated the symptom change through photographs and questionnaire. Investigator's Global Assessment(IGA) was used to evaluate the objective symptom and Visual Analogue Scale(VAS) was used to evaluate the subjective change. Results & Conclusions : The IGA and VAS were decreased in all patients. Most symptoms of 3 patients were improved. As a result of examining IGA, VAS scores and photographs, Hwangryunhaedoktang-Gamibang can be effective on Postmenopausal hot flush.

• The Journal of Korean Medicine
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• v.39 no.4
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• pp.183-192
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• 2018

Objectives: The purpose of this study is to report effectiveness of MY1-Hwan(MYH) on wart patients. Methods: Seven wart patients who wanted to treat wart with Korean medicine took MYH 2~3 times a day for 2~4 months without external treatments. Results: Nodules or papules of wart were vanished from seven patients' lesion. Specific side effect was not shown. Conclusions: MYH was effective to treat seven wart cases. However, seven cases are not enough to figure out the various effects of MYH and the effectiveness on other kind of wart. So follow-up studies are needed based on this study.

• Journal of the Korean neurological association
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• v.36 no.4
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• pp.387-389
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• 2018

• Bulletin of the Korean Chemical Society
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• v.5 no.6
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• pp.215-218
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• 1984

A series of S-(2,2-diethoxycarbonyl-1-phenylethyl)-L-cysteine derivatives (10a-e) were synthesized from the reaction of $\beta$$\beta$-diethoxycarbonylstyrene with L-cysteine in 1:1 aqueous methanol. Thus, S-(2,2-diethoxycarbonyl-1-phenylethyl)-L-cysteine( 10a), S-[2,2-diethoxycarbonyl-1-(3',4'-methylendioxy)ph enylethyl]-L-cysteine (10b), S-[2,2-diethoxycarbonyl-1-(3',4',5'-trimethoxy)phe nylethyl]-L-cyseine (10c), S-[2,2-diethoxycarbonyl-1-(p-hydroxy)phenylethyl] -L-cysteine (10d), S-[2,2-diethoxycarbonyl-1-(p-methoxy)phenylethyl] -L-cysteine (10e) were obtained in moderate to excellent yields. The structure of the adducts was characterized by analytical and spectral data. The effects of pH upon the product yields were also briefly examined.