요부수핵탈출증에서 Thermography의 진단적 가치

신현택,신승우,송재철,정석희,이종수,김성수,신현대 경희대학교 동서의학연구소 2001 東西醫學硏究所 論文集 Vol.2000 No.-

Objectives : Lumbar radiculopathy is a common disease in oriental rehabilitation medicine. It can be diagnosed by physical examination, plain X-ray, Myelography, CT, MRI, EMG etc. But those methods are not useful in observing the clinical procedure. Objectvie evaluating the clinical procedure is very important in treatment of lumbar radiculopathy. Mehthods : We studied the clinical efficacy of thermography in lumbar radiculopathy during conservative managements. We studied 36 patients with lumbar radiculopathy convinced by MRI. The had low back pain and radiating pain on one side. Thermography had taken before an after 4 weeks treatments, and compared with clinical procedure Results and conclusions : Thermography is not pertinent as a primary diagnostic method in lumbar radiculopathy, but useful in observing the clinical procedure. And it can be recommended as a objective evaluation for lumbar radiculopathy.

시스템 단계의 분할에 관한 연구

신현철,김충희 한양대학교 공학기술연구소 1994 공학기술논문집 Vol.3 No.1

An effective partitioning algorithm is developed for multiple chip systems. When a multiple chip network is given, the algorithm partitions a given circuit into several sub-circuits such that several constraints are satisfied. The algorithm is efficient and performs multi-chip partitioning and inter-chip routing simultaneously. This is to maximize pin utilization and to minimize interconnection delays. A FPGA network is designed to test our partitioning algorithm.

지연시간을 고려한 표준셀의 배치기법

신현철 한양대학교 공학기술연구소 1992 공학기술논문집 Vol.1 No.1

New hierarchical partitioning and performance-driven placement techniques for automatic design of application specific integrated circuits (ASICs) using standard cells have been developed. The new partitioning algorithm builds a hierarchical tree for a given circuit by using the gradual constraint-enforcing technique. The new placement method performs truly hierarchical simulated-annealing based placements. When compared with several conventional partitioning and placement methods, the new methods produced favorable results for several benchmark examples.

추간판 응력분포에 대한 광탄성 해석

신현국,이재창,안면환,안종철,인주철 영남대학교 의과대학 1989 Yeungnam University Journal of Medicine Vol.6 No.2

요추의 중립위, 굴곡위 및 신전위에서의 응력 분포의 차이와 수핵의 유무에 따른 응력 분포의 변화를 관찰하기 위해 본 연구를 시행 하였으며 등색선의 양상을 관찰하고 그 응력을 해석하여 다음과 같은 결론을 얻었다. 1. 기립 중립위에서는 수핵이 있는 경우는 전방 부위보다 후방부위에 고응력이 집중되었으며, 전후방 모두 내측부와 중간부위가 고응력이고 외측부로 이동할수록 적응력이 관찰되었다. 수핵이 없는 경우는 후방보다 전방부에 고응력이 집중되었으며 국소적으로 응력이 집중되는 양상을 보이고 있다. 2. 최대 굴곡위에서는 수핵의 존재에 관계없이, 전방보다 후방부에 고응력이 집중되었으며, 수핵 유무 비교시 수핵이 있는 경우가 없는 경우보다 전방이 저응력, 후방은 거의 동등한 응력 분포를 나타냈었다. 응력 분포도의 분석에 의하면 전반적으로 균등한 응력 분포 양상을 나타냈다. 3. 최대 신전위에서는 수핵 유무에 관계없이 전방부에 고응력, 후방부에 저응력, 내측에 고응력, 외측은 저응력을 나타내었으며, 수핵이 있는 경우 없는 경우보다 고응력을 나타냈다. 4. 기립 중립위와 최대 굴곡위의 비교에서는 기립 중립위보다 굴곡시 수핵의 유무에 관계없이 전반적으로 후방부 응력이 2차 정도 현저히 감소하는 양상을 보이면서 비교적 균등한 응력 분포를 나타냈다. 5. 최대 신전위와 최대 굴곡위의 비교에서는 수핵 존재시 최대 신전위보다 최대 굴곡위에서 응력 분포가 전후방 모두 2차 정도 감소되고 수핵이 없는 경우는 최대 신전위가 굴곡위보다 응력이 전후방 0.5차 정도 감소되었다. To observe the change in the status of stresses according to three different postural angulation of an intervertebral disc with or without nucleus pulposus, 6 specimens of a 3-dimensional photoelastic model of the spine were made of epoxy. The nucleus pulposus portion was replaced with silicon in three models, and the three were made without silicon. Through axial application of a vertical compressive load of 8㎏, the peculiar patterns of the isochromatic fringes were observed, Stresses on the intervertebral disc were analyzed according to three different postural angulations of the intervertebral disc with the nucleus pulposus and without the nucleus pulposus. The results of these study are as follow : 1. In an erect neutral posture with the nucleus pulposus, the stress concentration was much increased at the posterior portion rather than at the anterior portion. Also, the high stress was concentrated at the medial and central portion. In an erect neutral posture without the nucleus pulposus, the stress concentration was much increased at the anterior portion rather than at the posterior portion and the stress distribution seemed to be locally concentrated. 2. In a maximal flexed posture, the stress concentration was much increased at the posterior portion rather than at the anterior portion. Comparing the presence of the nucleus pulposus with the absence of the nucleus pulposus, the stress concentration was lower at the anterior portion in the presence of the nucleus pulposus than in the absence of the nucleus pulposus. However, the stress distribution at the posterior portion was nearly same in the two groups. According to the analysis of the stress distribution diagram, as a whole, the stress pattern around the disc was evenly distributed. 3. In a maximal extended posture, the higher concentration of the stress distribution at the anterior and medial portion rather than in the posterior and lateral portion was observed. The stress concentration was higher in the presence of the nucleus pulposus than in the absence of the nucleus pulposus. 4. Comparing the maximal flexed posture with the erect neutral posture, the stress concentration in the flexed posture was much decreased in the posterior portion rather than in the erect neutral posture, and an even distribution of the stress pattern in the flexed posture was observed. 5. In the absence of the nucleus pulposus, at the anterior and posterior portion, the stress concentration in the extended posture was much decreased compared with the flexed posture. In the absence of the nucleus pulposus, at the anterior and posterior portion, the stress concentration in the extended posture was much decreased compared with the flexed posture.

급성 심근경색 초기에 도플러 심초음파를 이용한 좌심실 이완기 기능의 평가

신원용,김주성,김철현,이광희,최태명,현민수,김성구,권영주 순천향의학연구소;Soonchunhyang Medical Research Institute 2000 Journal of Soonchunhyang Medical Science Vol.6 No.1

Background : Congestive heart failure after acute myocardial infarction relate to left ventricular systolic sysfunction. Also, left ventricular diastolic function contribute to heart failure. The aims of this study were, firstly to characterize left ventricular diastolic function by transmitral flow velocity, and secondly to study the significance of Doppler measurements in relation to the development of heart failure in the early phase of myocardial infarction. Method : Pulsed Doppler echocardiography of transmitral flow was assessed in 34 patients with acute myocardial infarction. According to the Doppler transmitral flwo velocity profile, the study patients were assigned to the three groups: normal filling pattern (DT > 140ms, IVRT < 100ms), relaxation abnormality (DT > 140ms, IVRT ≥ 100ms), pseudonormal or restrictive pattern (DT ≤ 140ms). Also, on the basis of the presence of heart failure during first week of hospitalization, the patients were divided into two groups: patients with no sign of heart failure (Killip class Ⅰ) and heart failure (Killip class Ⅱ-Ⅳ). Results : Of the 34 patients studied, 10(29%) were normal filling pattern, 17(50%) abnormal relaxation and 7(21%) were restrictive patterns. The left ventricular ejection fraction(EF, 40 ±6%) of restrictive pattern was significantly lower than that of normal filling pattern of abnormal relaxation(p < 0.01). And, the IVRT, DT, E/A and left ventricular EF were reduced in patients with heart failure(14 patients) compared to no sign of heart failure(20 patients)(p<0.05). Of the patients with heart failure, IVRT and left ventricular EF were reduced in patients with DT≤140 ms compared to DT> 140ms(p=0.001). Conclusion : Left ventricular diastolic dysfunction is present early after onset of symptoms of acute myocardial infarction. Assessment of left ventricular diastolic function complements measurements of systolic function in the evaluation of cardiac function. DT, IVRT, E/A and left ventricular EF are useful predictors for development of congestive heart failure following acute myocardial infarction.

일부지역 중·고등학생들의 흡연실태 조사연구

신옥순,남철현,김복용,최연희,박선희,박경옥,구재희 慶山大學校 保健福祉硏究所 2002 保健福祉硏究 Vol.7 No.-

This study was conducted to examine aspects of middle and high school students' drinking and smoking with analysis of related factors. The subjects of this study was 540 students in Kyungbuk Province. Data were collected from July, 2002 to September, 2002. The results of this study can be summarized as follows. 1. 43.6% of the boy students experienced smoking, while 12.2% of the girl students experienced it. 5.3% of the students at academy schools experienced smoking, while 44.7% of the students at vocational schools experienced it. 11.4% of the middle school students experienced smoking, while 33.9% of the high school students experienced it. 15.5% of them who lived in towns or villages experienced smoking and 38.3% of them who lived in small or medium sized cities experienced it.37.5% of the students who belonged to the lower economic class experienced smoking and 20.7% of the students who belonged to the upper economic class experienced it. 24.0% of the students who belonged to the middle economic class experienced it. It appears that the respondents showed significantly different smoking experience rates by gender, school types, grades, the number of family members, residences, and economic classes. 2. 14.5% of the respondents who lived with grandparents and parents experienced smoking and 26.5% of them who lived with parents experienced it. The smoking rate was significantly high in the groups of having one-parent, being unsatisfied with family life, making poor grades in studies, and having the father or the mother working as a salesperson. 3. 45.3% of the respondents who were unsatisfied with family life experienced smoking. The smoking rate of the respondents who were unsatisfied with it was significantly higher than that of the other groups. On the other hand, the smoking rates were not significantly different by daily life, schoolmate relation, health condition, and feeling stress. 4. According to smoking rate by frequency of drinking, 16.4% of the respondents who drank less than once a month smoked and 54.8% of them who drank more than twice a month smoked. The more frequently they drank, the higher their smoking rate was. Those who did exercise displayed significantly higher smoking rate than those who did not do exercise. Among the rates of the respondents' agonies, family disharmony was 50.5% and love problem was 39.2%. Economic condition preblem was 34.6%. It appeared that smoking was most influenced by the family disharmony. 5. The factors significantly influencing smoking experience were gender, school grade, schoolmate relation, score in studies, and exercise. From above results, it can be concluded that the students' smoking is a serious problems which can be resolved by simple approaches because it is interrelated complicatedly with gender, grade, family, school, etc. Schools, related organizations, and the government must closely work together to maximize the effectiveness of policy implementation concerning the smoking and drinking problem of the middle and high school students.

경남지역 주요 약용작물의 해충 종류 조사

신현열,이동운,추호렬,정도철 경상대학교 농업생명과학연구원 2002 농업생명과학연구 Vol.36 No.4

경남지역 주요 약용 작물 5종에 발생하는 해충과 기타 해로운 동물의 종류를 1999년과 2000년 2개년 동안 조사하였다. 홍화에서는 우엉수염진딧물과 꽃노랑총채벌레, 대만총채벌레, 오이총채벌레, 알락수염노린재를 포함한 13과 16속 20종이 확인되었으며, 산약에서는 꽃노랑총채벌레, 대만총채벌레, 애긴노린재를 포함한 6과 7속 10종이, 두충에서는 차주머니나방을 포함하여 6과 8속 8종이, 당귀에서는 대만총채벌레, 꽃노랑총채벌레, 차응애, 점박이응애, 복숭아혹진딧물을 포함한 11과 15속 16종이, 길경에서는 담배거세미나방, 파밤나방을 포함하여 10과 11속 14종의 해충이 확인되었다. Insect pests and some important arthropod pests infesting five medicinal crops were surveyed in Gyeongnam province in 1999 and 2000. Nineteen species of 16 genera in 12 families including Vroleucon gobonis, Frankliniella occidentalis, F. intonsa, Tetranychus cinnabarinus, Thrips parmi, and Dolycoris baccarum were identified from safflower. Ten species of 7 genera in 6 families including F. occidentalis, F. intonsa, and Nysius plebejus from yam, 8 species of 8 genera in 6 families including Eumeta minuscula from hardy rubber-tree, 16 species of 14 genera in 11 families including F. occidentalis, F. intonsa, T. kanzawai, T. urticae and Myzus persicae from Angelica gigas, 15 species of 14 genera in 11 families including Spodoptera exigua, and S. litura from balloon flower.

嶺東ㆍ太白地區 炭鑛會社의 勞使協力에 관한 實態와 그 改善方案

申斗休,姜熙甲,白喆鉉 관동대학교 1976 關大論文集 Vol.4 No.1

Korea has made great progress in anthracite producing capacity since past decade. Neverthless its promotion is critically desired and has become one of the great concerns of the government in carrying out the present national economic development plan because of shortage in our energy resources. Increase of anthracite production results from cooperation between management and labor instead of useless and excessive labor disputes. In this article has been dealt with real conditions and improvement ways of Labor-Management cooperation of coal mining corporations in Yong Dong Area only. To point out some of them to be considered and examined, are as follows. Firstly, in Collective Bargaining, labor union's organization being prerequisite to it should be induced to all the coal mining enterprise, its organization activity should be trained and the operative labor union law needs to be amended so that employees may have the right to reqire nationwide collective bargainning. Furthermore, it is desirable to adopt minimum wage system and widen span of collective barginning to workers' participation in management. Secondly, in Consultation of Labor-Management, even the labor union unformed enterprise should have the duty to organize a consultation instrument between employers and empoyees, moreover the existing consultation meeting should be strengthened effectively to actualize workers' participation in management. Lastly, in view of social welfare for workers. prompt enforcement of minimum wage system, investment inducement to welfare facilities by the government and the enterprise concerned, and widening application of existing workers' compensation insurance will be needed. The true labor-management harmony is contribute not only to increase of coal production capacity, but to just distribution of business performance through democratization of industry.

適應 最適制御의 한 方法

申鉉哲 金烏工科大學校 1981 論文集 Vol.2 No.-

A Practical control scheme is suggested for general MIMO discrete time processes. This type of control scheme, having the advantages of both the adaptiveness and optimality, may be successfully applicable to structured dynamic controllers for plants whose parameters are slowly timevarying The identification of the process parameters is undertaken in ARMA form and the optimization of the feedback gain matrix is performed in the state space representation with respect to a standard quardratic criterion.

L-라이신 발효에 있어서 당밀전처리의 영향

신현철,김성준,성진석,전영중,이재흥 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.3

Can molasses, the most widely used carbon source for the industrial fermentation of L-lysine, usually contains a high concentration of calcium ions which tend to cause scaling problem in the recovery process. To remove the calcium ions, cane molasses was pretreated with sulfuric acid by adjusting the pH to 2.5~3.5. When the pretreated solution was directly heat-sterilized and used in the fermentation, a significant reduction in L-lysine production was observed. In this paper, we proved that sucrose is a superior substrate for L-lysine fermentation of that of glucose or fructose and that the above-mentioned decrease of L-lysine production was caused by the hydrolysis of sucrose in the molasses when the molasses was heat-sterilized at a low pH. The problem was overcome by adjusting the pH of molasses to neutral before sterilization.