신경회로망 제어기를 이용한 PID 파라미터 추정에 관한 연구

權重東,裵銀敬,金恩基,全基英,李承桓,吳鳳煥,李勳九,金容珠,韓慶熙 明知大學校 産業技術硏究所 2006 産業技術硏究所論文集 Vol.25 No.-

In this paper, supposed to solve these problem to PID parameters controller algorithm using ANN. In the proposed algorithm, the parameters of the controller were adjusted to reduce by on-line system the error of the speed of IM. In this process, EBPA NN was constituted to an output error value of an IM and conspired an input and output. The performance of the self-tuning controller is compared with that of the PH) controller tuned by conventional method (Ziehler-Nichols). The effectiveness of the proposed control method is verified thought the Matlab Simulink and experimental results.

난황낭종 환자에서 보존적 수술 및 항암 화학요법 후 성공적인 자연임신

정은환, 홍승화, 박연진, 지일운, 김학순 충북대학교 의과대학 충북대학교 의학연구소 2012 忠北醫大學術誌 Vol.22 No.1

침윤성 난소암의 경우 생식력의 보존이 중요한 도전이라고 할 수 있다. 20대 중반의 여성에서 거대 한 난황낭종이 발견되어 생식력의 보존을 위해 보존적 수술과 복합항암화학요법을 시행한 후 임신 및 출산에 성공한 증례를 경험하였기에 문헌고찰과 함께 보고한다.

무증상 당뇨환자의 T 반사 변화

안규환,조용진,김상화,사은희,임용빈,김대성,정대수,박규현 대한신경과학회 1999 대한신경과학회지 Vol.17 No.5

中性시스템에서 白水의 再循還과 脫水 條件이 內添 藥品의 擧動에 미치는 影響

이은정,김병수,정현채,김철환,박종열 경상대학교 농업생명과학연구원 2003 농업생명과학연구 Vol.37 No.4

중성 초지에서 공정의 최적화를 위해 사용되는 각종 첨가제로 인해 백수 시스템은 산성 초지보다 훨씬 복잡한 특성을 나타내고 있다. 특히, 환경 및 경제적 이유로 공정수의 완전한 재사용을 위한 노력이 계속되고 있으며, 백수의 재사용은 제지 공정에 있어서 원료의 절감과 폐수의 부하를 줄일 수 있는 잇점이 있기 때문에 지속적인 연구가 이루어지고 있다. 그러나 초지 공정에서 배출되는 백수는 각 위치에 따라 그 특성이 다름에도 불구하고 통합되어 관리되고 있다. 따라서 본 연구에서는 백수의 재순환 회수와 탈수부 압력을 달리 했을 때 탈수부의 위치와 조건에 따른 백수의 유기 성분, 무기 성분과 수질 특성 그리고 이들 조건이 미세분 보류도와 종이의 특성에 미치는 영향을 파악한 결과 다음과 같은 결론을 얻었다. ① 백수의 재순환과 탈수부 조건에 따른 유기 및 무기 성분에 대하여 각각 FTIR과 WRD를 사용한 결과, 제지 공법에 사용되는 각종 물질의 추적을 위해 효과적인 방법으로 판단 되었다. ② 백수의 재순환 회수와 탈수 압력에 따른 수질 분석 결과 자연 탈수부에서는 백수의 재순환 회수가 증가할수록 무기염, 탁도, COD는 증가하였으며 진공 탈수부에서 보다 무기염, 탁도 및 COD는 낮은 것으로 나타났다. ③ 백수의 재순환 회수와 탈수 압력에 따른 종이의 강도적 특성과 미세분 보류도의 결과를 비교한 결과 이들간에 밀접한 관련이 있었다. ④ 백수의 재순환 회수에 따른 자연 탈수부와 진공 탈수부에서 탈수 조건에 따라 백수의 특성이 달라진다는 것을 알 수 있었다. 특히 무기염의 함유량, 탁도, COD 그리고 양이온 요구도에 있어서 자연 탈수부와 진공 탈수부 조건 사이에 나타난 결과에 따라 자연 탈수부에서 수집된 백수는 진공 탈수부에서 수집된 백수보다 미세분, 섬유, 충전제 및 기타 첨가제들을 많이 함유하고 있었으므로 탈수조건에 따라 백수의 이원화 관리가 필요한 것으로 판단된다. There has been shown more complicate characteristics of white water in the alkaline paper making system than that of acid paper making system. Because the alkaline wet end system is consisted with various functional chemicals to control optimum one pass retention on the wire part and chemi-mechanical properties of final paper, especially perfect reuse of white water due to environmental economical view point has been performed. However, in the paper making system, discharged white water in different position and physical conditions to remove in wet web is managed in same line. Therefore, this reserch was performed to identify organic, inorganic material in white water and water recycling and vacuum intensity on the chemical characteristics in the water and properties the paper. The results obtained are summarized as follow: 1. FTIR and XRD which were used for identifying wet end chemical were effective instrument to chase the chemicals from wet end stock to white water.88 2. According to control white water recycle number and vacuum intensity, the characteristics of white water were changed. 3. In condition of atmospheric pressure, apparent amount of fines and several chemicals which produce environmental problom was higher than that of high vaccum condition. 4. Paper mill has to control the white water differently on condition of vacuum and to separate from white water discharged in atmospheric pressure and high vacuum intensity 5. It can be very effective white water management to reduce water pollution and to improve runnability.

국내 통합학급 운영에 대한 학부모들의 인식 및 지원요구

권택환,박현옥,김은주 국립특수교육원 2008 특수교육연구 Vol.15 No.1

본 연구는 국내 통합학급 운영 실태에 대한 학부모들의 인식과 지원요구를 살펴보기 위하여 실시되었다. 그 결과 부모들은 일반학급 입급 시 장애학생들의 사회성에 대한 기대가 가장 큰 것으로 나타났으며 필요한 정보들은 주로 다른 장애학생의 부모나 특수교육관련 전문가 및 특수학급 교사에게 의존하고 있는 것으로 나타났다. 장애학생을 위한 개별화교육 프로그램의 작성에 부모 참여 수준은 매우 낮은 것으로 나타났으며 자녀의 학교생활에 관련하여서는 교과활동의 어려움, 문제행동, 친구들로부터의 따돌림 등으로 인해서 학교생활에 어려움을 겪고 있는 것으로 보았다. 또한 사회성에 대한 기대가 높음에도 불구하고 자녀가 일반 친구들로부터 언어적 놀림이나 따돌림을 받고 있는 것이 교우관계의 어려움인 것으로 보고하였다. 이러한 연구 결과에 따라 추후 통합 교육의 질적 향상을 위한 논의와 제언을 제시하였다. The study was conducted to understand the parent's perception and demand on the inclusive classroom. We surveyed nationwide parents who have student with disabilities enrolled in inclusive classroom. The survey showed that, for the most, the parents wanted their children to be socialized, And, they depended mostly on other parents, special classroom teacher and other experts in special education field for information on school adjustment, school work of their children. Also, the parents' participation on IEP meeting were very low. For their children's difficulty in school, the parents were quite aware of problem behavior, low achievement on general curriculum, and maliciously alienating fellow classmates. The verbal ridicule or alienation from classmate worked as an obstruction in making friends within the classroom. Taking the results of the study, we discussed and suggested to improve the quality of inclusive classroom.

황사의 확산예측을 위한 기상정보의 시간해상도에 관한 수치연구

이순환,곽은영,류찬수,문윤섭 한국환경과학회 2004 한국환경과학회지 Vol.13 No.10

In order to predict air pollution and Yellow-sand dispersion precisely, it is necessary to clarify the sensitivity of meteorological field input interval. Therefore numerical experiment by atmospheric dynamic model(RAMS) and atmospheric dispersion model(PDAS) was performed for evaluating the effect of temporal and spatial resolution of meteorological data on particle dispersion. The results are as follows: 1) Base on the result of RAMS simulation, surface wind direction and speed can either synchronize upper wind or not. If surface wind and upper wind do not synchronize, precise prediction of Yellow-sand dispersion is strongly associated with upwelling process of sand of particle. 2) There is no significant discrepance in distribution of particle under usage of difference temporal resolution of meteorological information at early time of simulation. but the difference of distribution of particles become large as time goes by. 3) There is little difference between calculated particles distributions in dispersion experiments with high temporal resolution of meteorological data. On the other hand, low resolution of meteorological data occur the quantitative difference of particle density and there is strong tendency to the quantitative difference.

다방성 출혈성 낭종을 형성한 비전형적 간혈관종 : 증례보고

이영환,김은아,윤기중 圓光大學校 醫科學硏究所 2004 圓光醫科學 Vol.19 No.2

동일한 국제예후지표(International Prognostic Index)를 나타내는 미만성 대형 B-세포 림프종에서 Bcl-2와 p16의 임상적 중요성

박상은,박수진,곽승근,박남숙,천재민,윤환중,조덕연,김삼용,김진만 충남대학교 의학연구소 2003 충남의대잡지 Vol.30 No.2

In Korea, malignant lymphoma is a common cancer, comprising about 2.7% of all malignant neoplasm. Diffuse large B cell lymphoma is the most common lymphoma, representing about 50% of all Non-Hodgkin's lymphoma. Diffuse large B-cell lymphoma is usually considered as heterogeneous group of neoplasms rather than a single clinicopathological entity. Clinical prognostic systems, including the International Prognostic Index (IPI), although useful to assess overall prognosis, embrace patients with heterogeneous prognoses. But International Prognostic Index scoring system is not sufficiently predict the prognosis. It is likely that the prognostic assessment of patients with diffuse large B-cell lymphomamight be improved by using biological features. Bcl-2 protein and p16 protein expression is recognized as useful biologic markers predicting the prognosis of patients with diffuse large B-cell lymphoma. To determine the clinical significance and prognostic value of bcl-2 and p16 proteins expression patterns, we studied 18 patients with de novo DLBL, whose archival pathology specimen were available for immunohistochemistry studies, atChungnam National University Hospital from September 1992 to December 2000. Archival specimens from each patient were immunostained with respective antibodies for bcl-2, p16. The results are as follows; 1) The median age was 54(rage : 37-69). There were 12 male patients(66.7%) and 6 female patients(33.3%) The 'B' symptom was abscentin all patients. The stages were as follows : Ⅰ, 2 patient(11.1%), Ⅱ, 10 patient(55.6%), Ⅲ, 4patient(22.2%) and Ⅳ, 2patient(11.1%). 3 patients(16.8%) had the elevated LDH level, 14 patients(77.8%) had the normal LDH level and 1 patients(5.6%) was not identified the LDH level. 2 patients(11.1%) had the bulky disease and 16 patients(88.7%) had no bulky diease. The distribution of ECOG status were O, 2 patients(11.1%c), 1, 14patients(77.8%) and 2, 2patients(11.1%). 2) Theimmunohistochemistry results are as follows bcl-2:+,10 patients(55.6%), bcl-2:-, 8patinets(44.4%), p16:+,3 patients(16.7%), p16:-, 15patients(83.3%) 3) After a median follow UP durations of 67 months, the median survival time was 57 months with a rage of 7-100+ months. 5-years overall survival rates was 44% by Kaplan-Meier method. 4) Reduced overall survival was demonstrated in the patients who expressed bcl-2 protein(P=0.0174). 5-year overall survivial rate was 12%(bcl-2 expression) versus 88%(no bcl-2 expression) 5) Among diffuse large B-cell lymphoma patients with IPI score 0-1, reduced overall survival was demonstrated with bcl-2 expression(P=0.023). 5-year overall survival rate was 18%(bcl-2 expression group) versus 100%(no bcl-2 expressiongroup) 6) Median survival durtation of diffuse large B-cell lymphoma patients negative for p16 expression was 57 months whereas p16 postive patients' median survival duration was not reached(P=0.4478). In diffuse large B-cell lymphoma patients with identical IPI scores, bcl-2 expression had additional prognostic value.

통풍 환자에서의 지질대사

이은우,강기서,강수용,이한준,김경환,임정일,박철경 중앙대학교 의과대학 의과학연구소 2001 中央醫大誌 Vol.26 No.2

Objective: To evaluate hyperlipidemia, a msjor tisk factor of coronary artery disease, frequently asscoiated with gout patients, we compared the mean lipid level of gout patient with that of non-gout male and accessed statistical significance for treatment of gout patient. Method: This study ws performed in the 266 male gout outpatients of the CAU medical center, who had serum lipid level test from Apr. 1996 to Aug. 2000. Serum uric acid, total cholesterol, triglyceride, HDL -cholesterol, and LDL-cholesterol level were measured after 12 hours of fasting. The patients with high lipid level were further evaluated into each type of the hyperlipidemia through electrophoresis study, and the test results were compared with that of the non-gout male adults(40∼60yr), and the statistical significance was examined. Results : The gout patients showed high levels of total cholesterol, triglyceride, and LDL-cholesterol. Especially they showed high level of triglyceride and LDL-cholesterol which suggested as the risk factors of atherosclerosis and coronary heart disease, but shoewed low level of HDL -cholesterol. But there were no definite relations between lipid level and other factors auch as age of patient, initial uric acid ;eve; and duration od gout. Conclusion: To evaluate the risk factors of atherosclerotic change of cadriac vascular system in gout patient, screening tests of serum lipid level of the patient seem mandatory.

정상인에서 전기 및 자기 자극을 이용한 설 근육의 전기생리학적 평가

조은미,류종현,안성환,조경원,임건한,김진호,김후원 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.1

Background: Abnormality of lingual muscles is clinically common. But its exact clinical assessment is quite difficult. Evaluation of motor power of the lingual muscles and their neural pathway is limited because of anatomical inaccessibility and individual variation of subjective symptoms. Transcranial magnetic stimulation (TMS) of the human motor cortex is a non-invasive tool to assess the functional integrity of the fast conducting central motor pathways and electrical stimulation of lingual nerve is a conventional method of peripheral nerve conduction. Therefore both study will be helpful to understanding of pathophysiology of lingual abnormality. Until now there is no such report in Korea. This study was conducted to acquire the easier method and normal control values of Korean subjects. Method: We recorded the motor responses from the lingual muscles of 32 healthy subjects (22 men, 10 women) by focal cortical TMS with a circular coil. Motor potentials were recorded by means of surface electrodes applied on the both side of the tongue, following TMS several centimeters lateral from the vertex and parietooccipital cortex and peripheral electrical stimulation of the 12th cranial nerve at the lateral 1/3 point of the line between the midline and angle of mandible. Results: During moderate motor activation, majority of maximal motor response were obtained 4-6cm lateral to the vertex with similar latencies. And the responses from magnetic stimulation of the intracranial segment of hypoglossal nerve were discarded because of difficulty to obtain and unsatisfactory reproducibility. The latency of motor evoked potentials in right cortical stimulation was 10.08 ± 1.17 msec and in left stimulation 10.04 ± 1.32 msec. The amplitudes in right 2.15 ± 1.02, left 2.09 ± 1.11 mV. The latencies electric hypoglossal nerve stimulation were 2.42 ± 0.34 in right, 2.49 ± 0.35 msec in left side. The amplitudes were 2.90 ± 2.37 in right, 2.43 ± 1.86 mV in left side. Central conduction times as calculated by subtracting the response latencies obtained by magnetic and electric stimulation are right 7.65 ± 1.19, left 7.55 ± 1.35 msec. There was no significant difference between man and woman, Conclusion: The method may be efficient, noninvasive, painless, and easy reproduced. With more extensive application to various neurological disorders, it comes close to being an ideal clinical conduction study technique for this cranial nerve.