지능형 정속주행 제어시스템 개발

임영도,설재훈,한창훈,김승철,박종오,이준탁,방석원 東亞大學校 附設 情報通信硏究所 1998 情報通信硏究所論文誌 Vol.6 No.1

This paper describes an intelligent cruise control system for automobile. With the remarkable numericalincrease of automobiles on the roal, the optimized traffic flow control using the cruise control is one of the very important traffic problems to overcome the limitation of an existing road capacity. Based onthis idea that minimize the fuel cost and teh air pollution, and accept a driver's needs for driving, we have developed an intelligent cruise control system for vehicle. This proposed intelligent fuzzy cruise controller was successfully implemented using the fuzzy algorithm, the i80c196 μ-controller board and the throttle valve actuator. The field test results on an linear road was introduced.

Plyometric training이 고등학교 태권도선수의 반응시간과 민첩성 및 순발력에 미치는 영향

한설(Sul Han),최종환(Jong Hwan Choi),김현주(Hyeon Ju Kim),김승환(Seung Hwan Kim),홍종현(Jong Hyun Hong),류철현(Chul Hyun Ryu),백만기(Man Ki Baek) 한국발육발달학회 2002 한국발육발달학회지 Vol.10 No.2

암모니아 및 가성소다처리 볏짚급여가 젖소의 산유능력에 미치는 영향

한인규,김준식,하종규,지설하,이현준,조윤연 한국낙농학회 1989 韓國酪農學會誌 Vol.11 No.2

볏짚을 4% 암모니아가스처리와 4% 가성소다 처리한 것과 牧乾草의 飼料價値를 알아보기 위하여 Holstein 搾乳牛 16頭와 코리테일 숫緬羊 12頭를 供試하여 産乳量, 乳成分, 經濟性 消比率, 反芻胃內 pH 등에 미치는 影響을 調査하였던 바 그 結果를 要約하면 다음과 같다. 1. 搾乳牛의 1일 平均 産乳量은 牧乾草 22.00±1.66㎏, NH₃-볏짚 21.33±2.34㎏, NaOH-볏짚 21.04±1.22㎏, 무처리 볏짚 20.96±2.48㎏ 順으로 牧乾草가 제일 높았으나 統計的인 有意差는 없었다. 2. 乳脂率은 NH₃-볏짚이 3.69±0.13%, 無處理 볏짚이 3.56±0.31%, 牧乾草 3.51± 0.22%, NaOH-볏짚 3.30±0.16%로서 NH₃-볏짚이 가장 높았으나 統計的인 有意差는 없었다. 乳蛋白은 NH₃-볏짚이 3.32±0.14%로 가장 높고 나머지 處理는 3.11±0.02∼3.13±0.99%로 비슷하였다. 乳糖은 NH₃-볏짚이 4.89±0.03%, NaOH-볏짚 4.79±0.04%, 牧乾草 4.74±0.04%, 無處理 볏짚 4.67±0.15%이었다. 3. 飼料攝取量은 NH₃-볏짚 3.3㎏, NaOH-볏짚 2.36㎏, 牧乾草 2.51㎏, 無處理볏짚 2.05㎏으로 NH₃-볏짚이 有意的으로 增加하였다(P<0.05). 4. 體重은 試驗開始時 557∼579㎏ 범위였으며 試驗期間中 各 處理 供히 變化가 없었다. 5. 反芻胃內 pH變化는 NH₃-볏짚이 6.82±0.26으로 가장 높고 나머지 處理는 6.66±0.06∼6.69±0.21 범위로 NH₃-볏짚이 약간 높았으나 統計的인 有意差는 없었다. 6. 乾物消比率은 NH₃-볏짚이 67.2±2.06%, NaOH-볏짚이 70.5±4.39%, 牧乾草 70.7±1.30%로서 無處理 볏짚 62.9±2.03%에 比하여 7∼10% 增加하여 統計的인 有意差가 認定되었다(P<0.05). 蛋白質 消比率은 큰 差異가 없었으며 粗纖維 消化率은 無處理 볏짚이 50.9±2.57%에 비하여 牧乾草 57.8±4.43%, NH₃-볏짚 60.3±5.8%, NaOH-볏짚이 72.8±4.9% 順으로 向上되었다(P<0.05). 7. 經濟性은 牛乳 1㎏ 生産에 所要되는 頭當 飼料費가 NH₃-볏짚이 137원으로 가장 많이 所要되었고 牧乾草가 127원으로 가장 적게 所要되었다. 頭當 1일 粗收入은 牧乾草區가 4,694원으로 無處理 볏짚區에 비하여 290원 더 많았으며 NH₃-볏짚區는 無處理 볏짚區 보다 136원 더 收入이 많았다. This experiment was carried out to determine the feeding value of 4% anhydrous ammonia (NH3-RS) and 4% sodium hydroxide treated rice straw (NaOH-RS) and orchard grass hay (Hay) in the milking cows. Sixteen lactating cows (567㎏) producing 22.6㎏ of milk daily were alloted into four treatments. Digestibilities of various nutrients contained in rice straw and hay, pH of rumen fluid after feeding these feeds were investigated using twelve Corriedale rams. The results obtained were summarized as fallows: 1. Average daily milk yields of cows fed hay, NH3-RS, NaOH-RS and U-RS were 22.0, 21.0, 21.0 and 20.9㎏, respectively, which were not significantly different. 2. Milk fat percentage, which was 3.69, 3.56, 3.55 and 3.30% for each treatment group, was not different. Dietary treatment did not influence milk protein and lactose. 3. Cows on NH3-RS consumed more feed than those on other diets. 4. Dry matter and crude fiber digestibilities of NH3-RS, NaOH-RS and Hay were significantly higher than those of U-RS. No difference, however, in crude protein digestibilities was found among four treatments. 5. The feed cost for producing l㎏ of milk was estimated as W137 (NH3-RS group), W136 (NaOH-RS group), W131 (U-RS group) and W127 (Hay). More net income (W290/head) was made in NH3-RS group.

A Geometric Characterization of Complete Continuity Property

JONG SUL LIM,GWANG SIK EUN,JU HAN YOON 충청수학회 1994 충청수학회지 Vol.7 No.1

We introduce the notion of the mean Bocce dentable and provide the geometric characterization of the CCP. We show that X has the CCP if and only if every bounded subset of X is mean Bocce dentable.

Vitamin D Deficiency is Significantly Associated with Depression in Chronic Kidney Disease Patients

( Jong Hyun Jhee ),( Su-young Jung ),( Hyung Woo Kim ),( Geun Woo Ryu ),( Sul A Lee ),( Seohyun Park ),( Hyung Jung Oh ),( Jung Tak Park ),( Seung Hyeok Han ),( Shin-wook Kang ),( Tae-hyun Yoo ) 대한내과학회 2015 대한내과학회 추계학술대회 Vol.2015 No.1

Background: Recent studies have reported significant associations between vitamin D deficiency and depression in the generalpopulation. Even though both vitamin D deficiency and depression are common in patients with chronic kidney disease (CKD), the association between these two prevalent factors remains poorly elucidated. Therefore, we investigated the association between vitamin D deficiency and depression in CKD patients. Methods: The data from Korean National Health and Nutritional Examination Survey between 2010 and 2012 were used. Patients with estimated glomerular filtration rate ≤60 mL/min/1.73 m2 were enrolled. VitaminD deficiency was defined as 25-hydroxyvitamin D3 [25(OH)D3] levels ≤10 ng/mL. The patients were divided into groups with or without vitamin D deficiency. Depression was determined by the EuroQOL-5D (EQ5D) questionnaire.Associations between vitamin D deficiency and depression were evaluated by multiple logistic regression analysis. Results: The mean age was 71.2±9.3 years, and 257 patients (51.9%) were female. The mean 25(OH)D3 levels were 17.9 ng/mL in total, 8.7 ng/mL in vitamin D deficient group, and 18.9 ng/mL in non-vitamin D deficient group. The prevalence of depression in CKD patients was higher compared to the general population (14.3% versus 11.1%, p=0.031). Moreover, the prevalence of depression was significantly higher in patients with vitamin D deficiency than those without vitamin D deficiency (27% versus 13.3%, p=0.022). Multiple logistic regression analysis showed that vitamin D deficiency was a significantly independent predictor of depression after adjusting for age, sex, alcohol, body mass index, hypertension, diabetes mellitus, anemia, suicidal idea, EQ5D index and serum parathyroid hormone levels (odds ratio=6.27, 95% confidence interval=1.57 to 25.05, p=0.009). Conclusions: Depression was highly prevalent in CKD patients. The prevalence ofdepression was higher in CKD patients with vitamin D deficiency. In addition, vitamin D deficiency was a significantly independent predictor of depression in CKD patients. Therefore, determining vitamin D levels might be helpful in predicting depression in these patients.

A Note on the Pettis Integral and the Bourgain Property

JONG SUL LIM,GWANG SIK EUN,JU HAN YOON 충청수학회 1992 충청수학회지 Vol.5 No.1

In 1986, R. Huff [3] showed that a Dunford integrable function is Pettis integrable if and only if T : x* →L₁ (μ) is weakly compact operator and {T(K(F,e)) I F ⊂ X, F: finite and ε > 0} = {0}. In this paper, we introduce the notion of Bourgain property of real valued functions formulated by J. Bourgain [2]. We show that the class of pettis integrable functions is linear space and if fis bounded function with Bourgain property, then T: x** → L₁(μ) by T(x**) = x** f is weak* - to - weak linear operator. Also, if operator T : L₁ (μ) → x* with Bourgain property, then we show that f is Pettis representable.

결석을 동반한 간외담관 기형 1예

김종한,김민성,박봉태,이인상,조성락,문취용,강종득,설병룡 대한소화기내시경학회 1996 Clinical Endoscopy Vol.16 No.6

Congenital anomaly of the extrahepatic biliary system is relatively common, especially vascular variations are much more frequent than anatomic variations. The normal anatomical structure is encountered in only 35 percent of individuals, many of these variations have little or no clinical improtance, but some cases induce symptoms and signs or may lead to incorrect diagnosis and inappropriate management. These are very important to correct diagnosis of biliary variations observed during ultrasonography, cholangiography and endoscopic retrograde cholangiopancreatography(ERCP) and to accurate management by surgeon or endoscopist since accidental section or ligation of aberrant structures can lead to serious complications. We experienced a very rare case of extrahepatic bile duct anomaly confirmed by ERCP. The right and left extrahepatic ducts were connected at the level of the pancreatic segment of the common bile duct and the cystic duct drains to the right extrahepatic duct. There were several stones in the distal portion of the left extrahepatic duct and gallbladder.

에이즈 환자에서 발생한 파종성 조류형 결핵균 감염 1예

이설희,최재혁,최문한,신동원,최종효,김태형,전민혁,고은석,추은주 대한감염학회 2008 감염과 화학요법 Vol.40 No.5

Nontuberculous Mycobacteria, especially Mycobacterium avium complex (MAC) infection is a common opportunistic infection in patients with acquired immunodeficiency syndrome (AIDS). In patients with AIDS, MAC infection more frequently presents as disseminated form rather than localized infection. Disseminated MAC infection is associated with a high mortality rate in patient with AIDS. We report a case of disseminated MAC infection in an AIDS patient involving bone marrow, mediastinal lymph node and lung.

트럭 탑재식 크레인용 캐빈의 구조 안전성 최적화 연구

신슬기(Sul-Gi Shin),소순재(Soon-Jae So),한승오(Seung-Oh Han),정종운(Jong-Un Jung),인인교(In-Gyo In) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.4

특장차용 캐빈은 크레인 붙이 트럭이나 고소작업차에 설치되어 낙하, 전도 시 작업자를 보호하는 기능을 수행하는 주요 부품이다. 특장차용 캐빈은 굴착기, 지게차 등 일반 중장비용 캐빈과 달리 360 도 회전이 필수적으로 요구되어 형태와 크기가 매우 제한적인 특징을 가지고 있다. 건설 현장에서의 크레인 전복, 인양물 낙하 등 안전사고 증가로 작업자를 보호하기 기능이 필수적으로 요구되고 있으나, 크레인 인양 하중 제한 등 전복 방지에 대한 연구만을 수행하고 있다. 캐빈에 대한 연구는 복합재, 알루미늄 소재 등 경량화 설계에 대한 연구만을 수행하고 있으며 작업자를 보호하기 위한 설계에 대한 연구는 전무한 실정이다. 본 연구에서는 특장차용 크레인의 구조 안전성을 확인하기 위해 낙하물 보호 구조 시험(FOPS)과 전도 보호 구조 시험(TOPS)에 대한 해석과 시험을 수행하였다. 특장차용 캐빈의 구조 강도에 대한 설계 기준치가 없으므로 소형 굴착기의 기준을 차용하여 설계 목표치를 설정하였다. 먼저, 해석을 통해 캐빈의 낙하, 전도 보호에 대한 설계 강도 평가를 실시하였으며, 이를 기반으로 설계를 보완하고 캐빈을 제작하였다. 해석과 동일한 조건에서 개발품에 대해 구조 안전성 평가를 실시하였다. 두 항목에서 모두 목표한 설계 강도를 달성하였으며, 시험과 해석 결과 비교를 통해 해석적 기법의 유효성을 검증할 수 있었다. 향후 검증된 해석 기법을 이용하여 형상 변경, 경량화 설계 시 기초 데이터로 활용이 가능할 것으로 예상된다. The cabin of a truck-mounted crane is a key component to protect the operator. Safety accidents such as overturning cranes and falling of lifted objects at construction sites increase, and worker protection functions are required, but only overturn prevention studies such as lifting force limitation are underway, and there is no research on falling objects. In this study, analyzes and tests were performed to improve and optimize the structural safety of truck mounted crane cabins. The design goals were based on the strength values of the compact excavator. Through analysis, the strength of the design was evaluated, complementary designs were made, and structural safety was evaluated through tests. In addition, the effectiveness of the analysis technique was verified by comparing the analysis-test results.

TBM의 관입속도 예측을 위한 경험적 모델의 비교

한중근(Han Jung-Geun),김종술(Kim Jong-Sul),이양규(Lee Yang-Kyu),홍기권(Hong Ki-Kwon) 한국토목섬유학회 2011 한국지반신소재학회 논문집 Vol.10 No.4

본 연구에서는 TBM의 관입속도 예측에 대한 경험적 모델을 비교하기 위하여 현장사례를 이용하여 관입속도를 예측하였으며, 예측결과와 시공 시의 실측치를 비교·분석하여 합리적인 모델을 평가하였다. 관입속도 예측은 일축압축강도를 이용한 모델과 암석의 특성 및 TBM의 장비 특성을 고려한 모델로 적용하였다. 사례현장은 대부분 편마암으로 구성되어 있으며, 절리가 발달되어 약선대가 존재하기 때문에 암석의 일축압축강도가 불규칙적으로 나타났다. 일축압축강도를 이용한 예측결과에서 Graham(1976)의 모델은 낮은 강도의 경우, 비현실적인 예측결과가 나타나는 것으로 분석되었다. 평균 관입율을 이용한 각 모델들의 신뢰성을 분석한 결과, 암석의 특성 및 TBM 기계적 특성을 합리적으로 반영한 NTNU 모델(1998)이 가장 높은 것으로 확인되었다. 그러나 실측치와 비교한 결과에서는 일축압축강도를 바탕으로 예측하는 Tarkoy의 모델(1986)이 사례현장의 특성과 일치하는 것으로 분석되었다. 즉, TBM의 관입속도 예측 시에는 대상 암종, 지질특성 및 TBM의 장비 특성을 모두 고려하여 다양한 모델을 이용한 합리적인 예측이 수행되어야 한다. This paper describes prediction results of penetration rate using case history in order to compare empirical models for penetration rate prediction of TBM. The reasonable empirical model is evaluated by comparison with prediction results and measured result. The penetration rate prediction is applied in separate empirical models considering rock characteristics and mechanical characteristics of TBM. The rock of applied filed had almost gneiss and its unconfined compressive strength was irregular due to the exist of weak zones and joint. In prediction results using unconfined compressive strength, Graham's model (1976) had impractical result when it had lower strength. NTNU model (1998) of the separate empirical models used in average penetration rate had the highest accuracy by comparison with the others, because it is a reasonable model which has rock characteristics and mechanical characteristics of TBM. However, Tarkoy's model (1986) based on unconfined compressive strength correspond with the measured values in field. Therefore, it should be considered a rock type, geological characteristic and mechanical characteristic of TBM at prediction of penetration rate.