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강정호(Kang Joung-ho),하동준(Ha Dong-Joon),조광수(Cho Kwang-Soo),고지영(Koh Ji-Yeong),정찬호(Jeong Chan-Ho) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
As Central Europe countries joined Europe Union in 2004, the investment of multi-national countries on these countries are growing and the construction of plants are increasing. For the effective construction of plants in these countries, design and construction technology should be accumulated where long span precast concrete is widely applied to reduce construction duration, labor cost and assure quality requirements. The purpose of this study is introducing and comparing design and construction technology of precast concrete in Central Europe.
강정호 ( Jeong-ho Kang ),이재용 ( Jae-yong Lee ),김우현 ( Woo-hyun Kim ) 한국산업융합학회 2006 한국산업융합학회 논문집 Vol.9 No.4
본 연구는 웰빙 환경 조성에 적합한 습도센서, 온도센서와 기류센서를 이용한 쾌적도 측정시스템에 관한 것이다. 이 측정시스템이 나타내는 쾌적도는 기류와 온도에 민감하게 나타났다. 시스템을 위한 온도와 습도 일체형 센서와 기류센서를 설계 및 제작하고, 마이크로 컨트롤러에서 센서신호를 측정하여 ISO7730에서 나타내는 예상온열 감지수 (PMV)와 쾌적감 지수(CSV)를 계산하고, 각각의 계산 값을 LCD에 표시하도록 하였다. 인위의 환경에서 실험한 결과, 본 시스템이 공기조화시스템, 자동차 기류조정시스템, 가정과 사무실 병원 등의 많은 분야에 적용이 될 수 있음을 알 수 있었다
빗살전극형 정전용량형 습도센서와 그 신호처리회로의 설계 제작
姜正浩(Jeong-Ho Kang),李在容(Jae-Yong Lee),金佑鉉(Woo-Hyun Kim) 대한전기학회 2006 전기학회논문지 P Vol.55 No.1
For the purpose of developing capacitive humidity sensor having interdigital electrodes, interdigital electrode was modeled and simulated to obtain capacitance and sensitivity as a function of geometric parameters like the structural gap and thickness. For the development of ASIC, switched capacitor signal processing circuits for capacitive humidity sensor were designed and simulated by Cadence using 0.25㎛ CMOS process parameters. The signal processing circuits are composed of amplifier for voltage gain control, and clock generator for sensor driving and switch control. The characteristics of the fabricated sensors are; 1) sensitivity is 9fF/%R.H., 2) temperature coefficient of offset(TCO) is 0.4%R.H./℃, 3) nonlinearity is 1.2%FS, 4) hysteresis is 1.5%FS in humidity range of 3%R.H.~98%R.H.. The response time is 50 seconds in adsorption and 70 seconds in desorption. Fabricated process used in this capacitive humidity sensor having interdigital electrode are just as similar as conventional IC process technology. Therefore this can be easily mass produced with low cost, simple circuit and utilized in many applications for both industrial and environmental measurement and control system, such as monitoring system of environment, automobile, displayer, IC process room, and laboratory etc..
고용량 Insulin lispro 피하 주사 후 저 인슐린 혈증을 보인 지속적 저혈당성 혼수 환자 1례
강정호 ( Jeong Ho Kang ),박현수 ( Hyun Soo Park ) 대한임상독성학회 2016 대한임상독성학회지 Vol.14 No.2
Increased plasma insulin levels are often observed in exogenous insulin overdose patients. However, plasma insulin level may decrease with time. We report a case of low plasma insulin level hypoglycemia after insulin lispro overdose. The patient was a 37-year-old man with no previous medical history who suspected insulin lispro overdose. Upon arrival, his Glasgow coma scale was 3 points and his blood sugar level (BSL) was 24 mg/dl. We found five humalog-quick-pen (insulin lispro) in his bag. There was no elevation of glucose level, despite an initial 50 ml bolus of 50% glucose and 150 cc/hr of 10% dextrose continuous intravenous infusion. He also suffered from generalized tonic-clonic seizure, which was treated with lorazepam and phenytoin. We conducted endotracheal intubation, after which he was admitted to the intensive care unit (ICU). There were recurrent events of hypoglycemia below BSL<50 mg/dl after admission. We repeatedly infused 50 ml 50% glucose 10 times and administered 1 mg of glucagon two times. The plasma insulin level was 0.2 uU/ml on initial blood sampling and 0.2 uU/ml after 5 hours. After 13 hours, his BSL stabilized but his mental status had not recovered. Diffuse brain injury was observed upon magnetic resonance imaging (MRI) and severe diffuse cerebral dysfunction was found on electroencephalography (EEG). Despite 35 days of ICU care, he died from ventilator associated pneumonia.
DC Motor와 Ballscrew를 이용한 Electromagnetic Damper Damping 효과 실험
강정호(Jeong-Ho Kang),이학철(Hac-Choel Lee),정영석(Young-Suk Jeong) 전력전자학회 2008 전력전자학술대회 논문집 Vol.- No.-
In this Paper, the modeling of the electromagnetic damper for automobile suspension is presented and the validation of the model is demonstrated by experiments. An electromagnetic damper, composed of a rotary DC motor, and a ball screw and nut. The damper then operates as a linear electric actuator. The damper then operate as a linear electric actuator. The results indicate the proposed system is feasible and it is proved that the electromagnetic damper has better than oil damper of passive control system.
Tier 4 Interim 배기규제 만족을 위한 56㎾급 오프로드 차량 EGR 적용에 관한 연구
강정호(Jeong Ho Kang),한준섭(Joon Sup Han),정재우(Jae Woo Chung),정건우(Gun Woo Jeong),조규백(Gyu Baek Cho),임중호(Jung Ho Lim),표수강(Su Kang Pyo) 대한기계학회 2012 大韓機械學會論文集B Vol.36 No.2
비도로용 차량의 경우 대부분 디젤엔진을 사용하여 엔진의 특성상 PM과 NOx의 배출이 많은 단점이 있다. 승용 및 상용 디젤 차량의 경우 CRDI 및 후처리 장치를 적용하였고 후처리 장치로 DOC/DPF를 장착함으로써 PM은 약 90% 이상 저감 가능하다. 상반관계인 NOx는 EGR 사용을 통해 1차적으로 NOx 배출량을 감소시키고 LNT, Urea-SCR 등의 DeNOx 시스템으로 NOx의 배출량을 보다 현저히 저감시켜 배기규제를 만족시키고 있다. 본 연구에서는 tier 4 interim 배기규제를 만족하기 위해 56㎾급 오프로드 차량으로 연구를 진행하였다. NOx의 감소를 위해 WGT와 전자 제어방식의 HPL EGR 시스템을 적용하였고 CO와 THC, PM 배출가스를 줄이기 위해 DOC와 DPF를 사용하였다. EGR 시스템을 적용하기 위해 각 조건에 대한 기본 실험을 실시하여 EGR map을 작성하였다. 작성된 map을 NRTC 모드에서 시험하여 map의 적용성을 검증하고 tier 4 interim 배기규제 만족여부를 파악하였다. In general, transportation sources include both on-road vehicles and off-road equipment. Off-road vehicles have usually used diesel engines, which have the disadvantage of high NOx emission. Common rail direct injection (CRDI) and after-treatment systems have been applied to meet the exhaust gas emission regulations for diesel vehicles. In the present, agricultural machinery has satisfied the Tier 3 emission regulations by using waste gate turbocharger (WGT) and internal exhaust gas recirculation (EGR). In this paper, the combustion and emission characteristics of an EGR system applied to a 56㎾ off-road vehicle in non-road transient cycle (NRTC) mode have been investigated. The EGR map was made from foundation experiments determining the EGR duty for all engine operating conditions, and then this map was applied to the NRTC mode. Consequently, the NOx emission was reduced by the EGR system, and the Tier 4 interim emission regulations were satisfied by using both the EGR system and an after-treatment system.