흡입관에 부착된 이젝터내의 유동특성에 관한연구

이행남,박길문,모양우,이덕구,설재림,김건일 朝鮮大學校 機械技術硏究所 2004 機械技術硏究 Vol.7 No.2

The ejector is used to get low pressure, and it has been applied to a lot of industry field like the heat engine, the fluid instrument power plant, the food industry, environment industry etc. because there are not any problem even it is mixed with kinds of liquid, gas, and solid. The flow characteristics in diffuser are investigated by PIV and CFD. The agreement between numerical analysis and experiment shows the validity of this study and the results of this study would be useful to the engineers who design for the flow systems for heating, ventilation, air conditioning and wastewater purification plants.

자동차용 시로코팬의 유동특성에 관한 연구

이행남,박길문,이덕구,정한별,김건일,설재림 朝鮮大學校 機械技術硏究所 2005 機械技術硏究 Vol.8 No.1

The sirocco fan is used to get low noise, and it has been applied to a lot of industry field like the heat engine, the fluid instrument power plant, the food industry, environment industry etc... because there are not problems even it is mixed with a any kind of liquid, gas, and solid. The flow characteristics in sirocco fan are investigated by PIV. The experiment using PIV measurement for Test section's flow characteristics acquired velocity distribution, Condition : when sirocco fan in automobile air controller maximum 1450RPM, and a revolution is a variation (l)950RPM, (2)l100RPM, (3) 1250RPM. The agreement a experiment shows the validity of this study and the results of this study would be useful to the engineers who design for the flow systems

동결견(凍結肩) 환자의 동서협진 치료의 임상효과 비교연구 : 견관절 가동운동범위(ROM) 변화를 중심으로

남동우,김행범,양동훈,임사비나,김건식,이두익,이재동,최도영,이윤호 경희대학교 동서의학연구소 2006 東西醫學硏究所 論文集 Vol.2006 No.-

Objectives : To establish an effective collaborate medicine treatment of acupuncture and western medicine for treating frozen shoulder patients. Methods : 59 voluntary patients were randomly assigned to Eastern treatment group(E group, n=22), Western treatment group(W group, n=17) and East-West treatment group(EW group, n=20). The E group received acupuncture treatment on LI15, TE14, GB21 and Master Dong's acupuncture points, Shin-gwan and Gyun-joong, twice a week for 4 weeks. The W group received suprascapular nerve block, subacromial injection and trigger point injection, twice a week for 4 weeks. The EW group received acupuncture and injection treatment including nerve block. All groups were instructed to practice self exercise during their daily lives. Evaluations were made before treatment and after treatment based on the change in shoulder Range of Motion(ROM) and the patient's satisfaction concerning the treatment was measured by Visual Analogue Scale(VAS). The obtained data were analyzed and compared. Results : The patient's satisfaction scores were E group 5.67, W group 7.73 and EW group 7.67. The E group and the EW group showed significant improvement in abbduction, adduction and flexion(p<0.05). The W group showed significant improvement in adduction(p<0.05). Abduction significantly improved(p<0.05) in the EW group compared to E group and W group. Flexion also showed improvement in the EW group, but the difference among the 3 groups was statistically insignificant. The three group's difference of change in extension and adduction was insignificant(p>0.05). Conclusion : Acupuncture and nerve block alone significantly improved ROM in frozen shoulder patients. Also collaborate treatment of acupuncture and nerve block significantly improved ROM in frozen shoulder patients. But the difference of the three treatments were significant only for improving abduction(p<0.05).

공익사업을 위한 손실보상 제도의 개선방안에 관한 연구

이건수(Lee, Keon Soo),김행조(Kim, Haeng Jo),이진형(Lee, Jin Hyung) 대한부동산학회 2020 大韓不動産學會誌 Vol.38 No.1

본 연구는 공익사업을 진행함에 있어서 불가피하게 발생되는 손실보상에 대한 제도개선을 위해 주요변수를 도출하고 행위자 입장에서는 사업 기간 내에 효율적인 사업을 진행하고 수용자 입장에서는 손실보상의 합리성을 추구하기 위한 시사점을 제공하고자 연구의 체계를 사업인정단계, 수용재결 및 불복 단계로 구분하고 의사결정의 체계화와 합리화를 위한 방안으로 AHP 및 Fuzzy 분석을 통해 제도의 개선을 위한 우선순위 변수를 도출하고자 하였다. 분석결과 소분류에 대한 종합중요도는 대분류, 중분류의 비중 값을 각각 곱하여 도출하였으며 상위 5개 요인은 사업전개단계에서의 사업인식 측면 소분류 개별법상의 사업인정의제에 의한 공공성(토지보상법 제4조의 유형 모호) 변수가 AHP 종합 중요도 0.084, Fuzzy-AHP 보정 종합 중요도 0.165로 가장 중요한 요인으로 나타났다. 따라서 공익사업의 손실보상에서 행정권의 재량에 따라 사업의 방향성과 성공 여부가 결정되는 것으로 파악되어 공익사업의 사전준비 형태가 매우 중요함에 따라 법률에서 정한 집행과 더불어 수용자와의 협력방안이 보상자의 선정과 보상절차를 빠르게 진행할 수 있는 척도로 귀결된다. The purpose of this study is to derive key variables to improve system for loss compensation that inevitably occurs in public service. Through this, the study aims to provide the implications for pursuing efficient business within the period of the business from the perspective of actors and pursuing the rationality of the loss compensation from the perspective of customers. To this end, the research system was divided into business approval stage, acceptance decision and dissent stage. In addition, AHP and Fuzzy analysis have identified the priority variables of the improvement plan for the systematization and rationalization of decision-making. The comprehensive importance for the small category was derived by multiplying the specific gravity values of the large and mid categories, respectively. In the top 5 factors, business recognition at the stage of project development and publicity (type ambiguity in Article 4 of the Land Compensation Act). at each AHP comprehensive importance 0.084 and Fuzzy-AHP adjusted comprehensive importance 0.165. In the loss compensation of public services, the direction and success of the project are determined by the discretion of the executive authority. Since the preliminary arrangements of public service preparation is so important, the cooperation with customers the along with law enforcement will be a way to speed up the selection and compensation process.

도시지역의 홍수피해액 산정을 위한 다차원홍수피해분석(MD-FDA)방법의 적용

이건행(Lee Keon Haeng),김형수(Kim Hung Soo),박석근(Park Seok Geun) 대한토목학회 2005 대한토목학회 학술대회 Vol.2005 No.10

차세대 엔진제어기의 표준화 플랫폼 대응을 위한 차량용 통합반도체 개발

이건(Keon Lee),조범철(Beom-Cheol Cho),장두진(Doo-Jin Jang),이지행(Ji-Haeng Lee),우재혁(Jae-Hyuck Woo) 대한전자공학회 2020 대한전자공학회 학술대회 Vol.2020 No.8

This paper proposes an automotive ASIC to cope with the standardization platform of nextgeneration ECU(Engine Controller Unit). It is developed to secure cost competitiveness and efficiently develop a variety of powertrain controller lineups. Recently, according to the emission standards of automobiles, establishing a diverse powertrain portfolio and rapid development strategy has become an important task for automobile manufacturers. The architecture of the proposed automotive ASIC for the ECU integrated 8 types of power supply, 24 channels of driver, 3 channels of communicator, and 2 channels of real-time counter. And it was implemented with a 65V 0.11um BCD process technology for vehicles.

다차원 홍수피해산정방법을 이용한 도시지역의 홍수피해액 산정

이건행(Lee Keon Haeng),최승안(Choi Seung An),김형수(Kim Hung Soo),심명필(Shim Myung Pil) 대한토목학회 2006 대한토목학회논문집 B Vol.26 No.4B

우리나라에서는 치수사업을 추진하기 위한 경제성 분석으로 간편법과 개선법을 사용하여 오다가 현재는 2004년도에 개발된 다차원법(다차원 홍수피해 산정방법(Multi-Dimensional Flood Damage Analysis))을 이용하고 있다. 다차원법은 도시와 농촌 등의 구분없이 일반적으로 이용할 수 있도록 개발되었는데 본 논문에서는 도시지역에 적합하도록 다차원법의 홍수피해 산정 요소들을 보정하여 적용하고자 하였다. 즉, 다차원법에서 제시하고 있는 피해액 산정 항목들 중 도시지역 분석을 위해 일부를 보정 또는 제안하였다. 본 연구에서 제안하는 항목은 배수펌프장의 내수배제능력을 고려해 침수모의를 수행하여 침수 예상지역에 대한 침수심을 산정하는 것이다. 그리고 보정한 항목으로는 산업지역의 피해, 공공시설물의 피해율 등에 대한 것으로 도시지역의 피해액 산정을 위해 수정하여 적용하였다. 도림천의 지하방수로 사업의 비용-편익비를 산정하여 비교한 결과, 다차원법을 이용한 경우 5.51, 본 연구에서 제시한 비주거지역 자산과 공공시설물의 피해율을 이용한 경우는 6.75의 비용-편익비를 추정할 수 있었다. 이는 피해액 항목들 중, 많은 비중을 차지하는 공공시설물피해 항목에 의한 영향의 크기 때문인 것으로 판단된다. A simple and an improved methods for the economic analysis of the flood control project has been in previous studies in Korea. In 2004, the Multi-Dimensional Flood Damage Analysis (MD-FDA) was developed and now it is widely used for the economic analysis of flood control project. However, the MD-FDA was developed for general damage assessment and analysis without consideration of specific regional characteristics such as urban and rural areas. To compensate the MD-FDA for the application in urban area, a part of damage estimation components is modified and a component for the flood damage estimation is suggested. The component we suggest is for the consideration of the capability of storm water pump stations in the study area. When flood is occurred in the urban area, the damage potential is larger than the rural area because of the concentration of human lives and properties. So, many storm water pump stations are located in the urban area and the inundation depth is estimated by considering the capabilities of pump stations. We also compensate the damage components such as the damages of industrial area, and public facilities for the flood damage estimation of the urban area. The results by the compensated MD-FDA for the urban area application with those by original MD-FDA are compared. As a result the B/C ratio showed 6.75 and 5.51 respectively for the modified and original MD-FDA. This difference might be largely affected by the damage rate of the public facilities.

다차원 홍수피해 산정방법 피해항목의 조정에 따른 영향성 검토

이건행(Lee Keon Haeng),임우생(Lim Woo Saeng),이대영(Lee Dae Young),김형수(Kim Hung Soo) 대한토목학회 2006 대한토목학회 학술대회 Vol.2006 No.10

대리변수를 이용한 한반도 수질 및 수생태계 부문의 기후변화 취약성 평가

이건행 ( Keon Haeng Lee ),정유진 ( Eu Gene Chung ),김경현 ( Kyung Hyun Kim ),유정아 ( Jeong Ah Yu ),이은정 ( Eun Jeong Lee ) 한국물환경학회 ( 구 한국수질보전학회 ) 2012 한국물환경학회지 Vol.28 No.3

This study aims at assessing vulnerability of water quality and aquatic ecosystem to climate change by using proxy variables. Vulnerability to climate change is defined as a function of exposure to climate, sensitivity, and adaptive capacity. Detailed proxy variables were selected considering availability and then standardized by re-scaling concept. After adequate weights were assigned to standardized proxy variables by Delphi technique, vulnerability index was calculated. As results, vulnerability of adjacent regions to coastal areas include water quality and aquatic ecosystem is relatively higher than that of inland areas, and especially adjacent region to the western and southeast seas, and Jeju show high vulnerabilities. Vulnerability in the future was performed based on A1B scenario (IPCC, 2000). Temporally, the increase of vulnerability from 2050s to 2100s may be larger than the increase from 2000s to 2050s. Because vulnerability index was estimated through the relationship among various proxy variables, it is important to consider characteristics of local region with measurements and policies for reduction of sensitivity and enhancement of adaptive capacity on climate change. This study is expected to be useful in planning adaptation measures and selecting priority to the policy on climate change.

CCGIS를 이용한 수질 및 수생태 부문의 기후변화 취약성 평가

이건행 ( Keon Haeng Lee ),정유진 ( Eu Gene Chung ),김경현 ( Kyung Hyun Kim ),유정아 ( Jeong Ah Yu ),이은정 ( Eun Jeong Lee ) 한국물환경학회 ( 구 한국수질보전학회 ) 2012 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2012 No.-