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최적의 집적회로 레이어 배치 결정을 위한 알고리즘 구현에 관한 연구
김기량(Ki Ryang Kim) 산업기술교육훈련학회 2013 산업기술연구논문지 (JITR) Vol.18 No.4
In this paper, recent transistor and integrated circuit according to stow on the delay and area minimization of design, and optimization methods to reduce power consumption, there is a need. Semiconductor manufacturing technology increases, due to changes in density, depending on the engineering tradeoffs in the design work that is important during integrated circuit design. The most trade-circuit design timing, power and chip area is associated with a more accurate layout placement at the time to predict the timing and routing congestion analysis is needed. In this study, neuro-fuzzy algorithm for placing parts of the system and the expert system, a fuzzy neural network algorithm in the form of hybrid algorithms depending on experience needed to design and classification problems based reasoning system based on the group of valid inference in the environment with the ability to implement the algorithm and prove its effectiveness.
김기량(Ki-Ryang Kim) 산업기술교육훈련학회 2011 산업기술연구논문지 (JITR) Vol.16 No.4
Intelligent control algorithms used in this paper is used to detect the Earth s magnetic field is applied to a system that determines the direction of learning and reasoning skills will prove. Intelligent control system mathematical modeling of the system is complex, uncertain and ambiguous conditions, the system is suitable for application. The characteristics of intelligent control systems utilize empirical knowledge of experts believe that the reasoning ability and ability to learn is that the system contains. As a representative system of intelligent algorithm, fuzzy logic control systems and neural network algorithms have. Magnetic energy is the ability to detect magnetic sensor, magnetic energy is converted into electrical signals it detects. Using self-transformation work magnetoresistance effect element is an MR devices, MR devices as e-Inductive magnetic sensor in the output voltage differential, and the temporal variation is proportional to the magnetic lines of force. Distortion of the hardware elements of the cause if possible, to reduce the adaptive algorithm, fuzzy logic decision algorithm using the neural network FNN algorithm is proposed.
침술 및 근육 내 자극치료 (Intramuscular Stimulation)에 의한 콩팥주위 혈종
김설영 ( Seul Young Kim ),장원익 ( Won Ik Jang ),정사라 ( Sa Rah Chung ),최대은 ( Dae Eun Choi ),나기량 ( Ki Ryang Na ),이강욱 ( Kang Wook Lee ),신영태 ( Young Tai Shin ) 대한신장학회 2009 Kidney Research and Clinical Practice Vol.28 No.2
Acupuncture therapy has been widely performed by staffs of oriental medicine in Korea, and intramuscular stimulation (IMS) therapy has been introduced recently and used for controlling myofascial pain in the field of orthopedics, rehabilitation, and pain clinics. To penetrate human tissues, relatively long needles are used in both procedures and these these may have some risks to puncture blood vessels. However, there were few reports about sequelae or complications after such procedures in Korean literatures. Recently, we experienced two cases of perirenal hematoma in patients without blood coagulation abnormalities (one case induced by acupuncture in oriental medicine clinic, and the other case induced by IMS in orthopedic clinic and was also accompanied by perirenal abscess).
신증후성 출혈열 후에 발생한 Henoch-Schonlein 자반증성 신염과 비골신경 마비
김의식 ( Eui Sik Kim ),장원익 ( Won Ik Jang ),정지윤 ( Ji Yoon Jung ),정사라 ( Sa Rah Chung ),최대은 ( Dae Eun Choi ),임범진 ( Bum Jin Im ),나기량 ( Ki Ryang Na ),이강욱 ( Kang Wook Lee ),서광선 ( Kwang Sun Suh ),신영태 ( Young Ta 대한신장학회 2009 Kidney Research and Clinical Practice Vol.28 No.6
In the course of hemorrhagic fever with renal syndrome (HFRS), mild neurological symptoms such as headache, vertigo and nausea are common. Peripheral neuropathy in HFRS is very rare. Henoch-Schonlein purpura (HSP) is an immunologically medicated systemic vasculitis of small blood vessels affecting the skin, gastrointestinal tract, joints and kidneys, predominantly. Neurological complications in HSP include headache, focal cerebral deficit, coma, convulsion, subarachnoid hemorrhage and chorea. Peripheral neuropathy is also very rare. However there was no case report about HSP and peroneal nerve palsy after HFRS. With a brief review of the literature, we report a case of HSP and peroneal nerve palsy following HFRS.
지속적 신대치요법 (Continuous Renal Replacement Therapy)으로 치료받은 급성 신부전증 환자들의 예후 인자
김의식 ( Eui Sik Kim ),함영록 ( Young Rok Ham ),장원익 ( Won Ik Jang ),정지윤 ( Ji Yoon Jung ),권오경 ( O Kyoung Kwon ),정사라 ( Sarah Chung ),최대은 ( Dae Eun Choi ),나기량 ( Ki Ryang Na ),이강욱 ( Kang Wook Lee ),신영태 ( Young 대한신장학회 2010 Kidney Research and Clinical Practice Vol.29 No.1
Purpose: Continuous renal replacement therapy (CRRT) has been used widely for treating critically ill patients with acute renal failure (ARF). We performed this study to identify predictors of mortality in critically ill ARF patients treated with CRRT. Methods: We analyzed the data of 128 patients who were treated with continuous veno-venous he-mofiltration (CVVH) or continuous veno-venous hemodiafiltration (CVVHDF) from May, 2002 to March, 2008. We compared the clinical data of survivors with non-survivors. Results: On univariate analyses of prognostic factors of patients treated with CVVHDF, APACHE II scores (p=0.004), prothrombin time (INR) (p=0.033) and the number of inotropics used (p=0.005) were significantly lower in survivors than those of non-survivors. MAP (p=0.027), diastolic BP (p=0.015) and fibrinogen level (p=0.007) were significantly higher in survivors than those of non-survivors. Multivariate analysis revealed that APACHE II scores and fibrinogen level were the independent factors for the prediction of mortality. And on univariate analyses of prognostic factors of patients treated with CVVH, APACHE II scores (p=0.002) and the number of inotropics used (p=0.006) were significantly lower in survivors than in non-survivors. MAP (p=0.03), systolic BP (p=0.02) and diastolic BP (p=0.03) were significantly higher in survivors than in non-survivors. Multivariate analysis also revealed that APACHE II scores was the only independent factor for the prediction of mortality. Conclusion: This study showed that the independent prognostic factor for mortality in ARF patients treated with CRRT was the APACHE II score.
김기량,Kim, Ki-Ryang 한국정보통신학회 2011 한국정보통신학회논문지 Vol.15 No.10
본 논문에서는 지구 자기장을 측정하여 방향을 인식하는 시스템 구현에 있어 하드웨어적으로 회로를 부가하는 방식 보다는 소프트웨어적인 알고리즘을 추가하여 지구 자기장의 지역적 변화와 주변 환경에 적응력을 갖는 측정 시스템을 구축한다. 소프트웨어적인 알고리즘에는 뉴럴 네트워크(neural network)를 사용하여, 입력 패턴에 따른 패턴간의 관련성을 형성하고 학습을 통해 패턴들의 특징과 관련 정보가 기억 되었을 때 출력이 입력에 feedback하는 연상회로망을 구성하여 방향 인식에 사용할 수 있는 소프트웨어를 구현하고 그 실효성에 대해 입증한다. In this paper, we use the earth's magnetic field is measured by the MR device. By analyzing the measured data to determine the direction to implement the system. The construction of the system to determine the direction of neural networks, using input data based on an analysis of the relationship between pattern formation and characteristics of study and related information through a pattern when it is remembered that the output feedback input to associative networks and proves its feasibility for implementation. The entire detection system with regional changes in the Earth's magnetic field to adapt to the environment should aim to build a system.
성인에서 발생한 Henoch-Schonlein 신염의 예후인자
김난희 ( Nan Hee Kim ),함영록 ( Young Rok Ham ),윤지현 ( Ji Hyun Yoon ),정지윤 ( Ji Yoon Jung ),김의식 ( Eui Sik Kim ),정사라 ( Sa Rah Chung ),최대은 ( Dae Eun Choi ),나기량 ( Ki Ryang Na ),이강욱 ( Kang Wook Lee ),신영태 ( Young 대한신장학회 2009 Kidney Research and Clinical Practice Vol.28 No.6
Purpose: Renal involvement of Henoch-Schonlein (HS) purpura is common, and the long-term prognosis depends on the degree of renal injury. The aim of our study was to search for prognostic factors of HS nephritis and its relationship with clinical, laboratory, and renal pathologic features. Methods: Study population consisted of 81 patients (age ≥15 years) with HS nephritis who had been admitted to Chungnam National University Hospital from January, 1991 to February, 2008. We reviewed the clinical symptoms, laboratory data and pathologic findings of kidney of total 81 patients, and also analyzed the relationship between these and renal prognosis. Results: The mean age of patients was 40.6 years and the median duration of follow-up was 16 months. Male to female ratio was 1.08. Kidney biopsies were carried out in 61 patients (75.4%). Regarding renal function, 14 (17.3%) of patients reached moderate to severe renal insufficiency, and 4 (4.9%) progressed to end-stage renal disease within 16 months (median, range 1.5-196 months) after diagnosis. Complete clinical remission was achieved in 26 patients (32.1%). The presence of gastrointestinal symptoms, relapse of purpura, hypertension, nephrotic syndrome, renal insufficiency, increased level of serum immunoglobulin A, and the magnitude of crescents and sclerotic glomeruli were significantly associated with poor renal prognosis (all p<0.05). In multivariate logistic regression analysis, initial elevated serum creatinine level and hypertension were independent prognostic factors (p=0.013, p=0.007). Conclusion: We concluded that the initial clinical findings including renal function and hypertension are important prognostic factors in adult HS nephritis.