XML/RDF와 SMIL에 기반한 멀티미디어 교육 컨텐츠 검색

최병욱,류정우,조정원 한국컴퓨터교육학회 2002 컴퓨터교육학회 논문지 Vol.5 No.3

대량의 멀티미디어 교육 컨텐츠의 재사용과 그 효과적인 관리를 위해서는 원하는 컨텐츠를 빠르고 정확하게 검색하는 방법을 제공할 수 있어야 한다. 본 논문에서는 대량의 멀티미디어 교육 컨텐츠에 대한 새로운 검색 방법을 제안한다. 교육 컨텐츠의 호환성을 확보하기 위해, XML을 기반으로 한 멀티미디어 동기화 표준언어인 SMIL을 이용하여 교육 컨텐츠에 사용되는 멀티미디어 요소의 통합과 동기화를 표준화된 방법으로 구현하였다. 또한 SMIL 교육 컨텐츠에 교육용 메타데이터인 IEEE LOM을 XML 기반의 RDF 형태로 부여하였다. 본 논문에서는 2단계의 검색 방법을 통해 보다 정확한 검색 기법을 제시한다. 1단계에서는 메타데이터를 이용한 검색으로서 원하는 컨텐츠를 검색하고, 2단계에서는 1단계에서 찾은 컨텐츠에 대해 SMIL의 시간 정보를 이용하여 컨텐츠의 세부적인 내용을 검색하도록 설계하였다. 또한 사용자가 각각의 검색 결과들을 이용하여 새로운 교육 컨텐츠로 재구성하고, 이를 학습에 이용하도록 함으로써 사용자 주도적인 학습이 가능하도록 하였다. In this paper, we propose the new approach with which user is able to retrieve the massive volume of learning contents in the multimedia learning system. In order to secure the compatibility of learning contents, we apply the SMIL on the basis of XML, so that the integration and the synchronization of multimedia components can be available to realize in the mode of standardization. We also implement the multimedia learning contents represented by the RDF on the IEEE LOM. We present the two step-retrieval method to get precise results. In the first step, user can find with high speed and ease whatever contents user wants to take a look through metadata in the system. The second step is followed that by using the time information of SMIL, user can retrieve the interest synchronous parts in the result of the first step. This innovative retrieval approach applied in the multimedia learning system is highly expected to make a meaningful contribution to implement the principles of self-directed learning in the learning environments, where user can use and revise the retrieval results for their own learning purpose and make further the active knowledge-reconstruction.

유지 투석중인 만성 신부전환자에서 허혈성 심질환의진단 지표로서의 심장트로닌-I의 유용성

신병철,강대웅,정지용,류봉관,서영욱,김정인,김범윤,김현리,정종훈 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.1

Background : Coronary disease is highly prevalent in patient with end stage renal disease (ESRD) and account for much of their observed morbidity and mortality. Troponin-I consistently maintains a high sensitivity and specificity and is most sensitive marker for ischemic heart disease (IHD). Method : We examed 49 hernodialyzed patients (22 male, 27 female) without evidence of acute coronary syndrome (ACS) for 6 months. Biochemical markers were measured in serial predialysis blood samples. For analysis, we used two cardio-specific assays for troponin-T (cTnT) as well as for troponin-I (cTnI) and compared the results with CK-MB (reference value ≤ 4.0 ng/mL) concentration. Results : Myocardial ischemia was observed in 47% (23/49) of patients. cTnT level above 0.1 ng/mL. and cTnI level above 0.5 ng/mL, were observed in 22% (11/49) and 20% (10/49) of patients respectively. cTnI revealed significantly higher positive rate in patients with myocardial ischemia than the patients without myocardial ischemia (43 % vs 30%) (p<0.05). cTnT and CK-MB revealed no difference in positive rate between the patients with and without myocardial ischemia (cTnT : 30% vs 15% and CK-MB : 30% vs 19%). The sensitivity and specificity of cTnI to myocardial ischemia were higher than those of cTnT and CK-MB (sensitivity 43% vs 30% and 30%. specificity 100% vs 85% and 81%). Conclusion: Both cTnT and cTnI are useful in ruling out myocardial injury in chronic renal failure patients. But. cTnI is a more sensitivity and excellent specificity of ischemic heart disease than cTnT and CK-MB in hemodialyzed patients. In patients with ischemic heart disease, the presences of DM and advanced age were higher than those in patients without ischemic heart disease (p<0.05). Among the baseline characteristics old age, elevated LDH and diabeties were significant more frequent in the patients with elevation of cardiac troponin-I (p>0.5 ng/mL) than those with cardiac troponin-I (p<0.5 ng/mL), p=0.038, p=0.049, and p=0.045, respectively. Our results suggest that these cTnI is the potential diagnostic marker for the prediction of IHD in ESRD patients.

바닥구조의 고유진동수 보정-예측식의 제안을 위한 사례연구

류상욱(Sang-Uk Ryu),황재승(Jae-Seung Hwang),김정중(Jung-Joong Kim),정광민(Kwang-Min Jung) 한국소음진동공학회 2014 한국소음진동공학회 학술대회논문집 Vol.2014 No.10

Exceptional points in coupled dissipative dynamical systems

Ryu, Jung-Wan,Son, Woo-Sik,Hwang, Dong-Uk,Lee, Soo-Young,Kim, Sang Wook American Physical Society 2015 Physical review. E, Statistical, nonlinear, and so Vol.91 No.5

Carbamazepine에 의한 급성 간질성 신염 1예

류봉관,정지용,김범윤,서영욱,김정인,정종훈,김현리 대한내과학회 2004 대한내과학회지 Vol.66 No.4

저자들은 carbamazepine 복용 후 소변량 감소와 피부 발진을 주소로 내원한 환자에서 신장 조직 검사상 급성 간질성 신염으로 진단되어 유발 원인으로 보이는 약물 중단 및 부신피질 호르몬을 투여 후 증상이 완화된 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Acute interstitial nephritis often caused by drugs and infection. Interstitial nephritis by drugs is a kind of idiosyncratic reaction and is caused independently of dosage. This disease developed within several days or weeks after taking medicine but improved if discontinue medication. Adrenocortical hormone may shorten the period of disease if renal dysfunction continued. Acute interstitial nephritis by carbamazepine that is used for epilepsy cure is rarely reported. A 49-year-old male was admitted to our hospital because of skin rash and decreased urine volume which developed 10 days ago. Patient was diagnosed intracranial hemorrhage 6 months ago and was taking carbamazepine because of tingling sensation to lower extremity before 2 months. At admission, blood pressure 120/80 ㎜Hg, hemoglobin 12.6 g/dL, WBC 232,000/㎣, eosinophil count 2,790/㎣, platelet 166,000/㎣. Urine findings indicated protein 1+, blood 2+ and eosinophil was observed in microscopic examination. Abdominal sonography showed increase of both kidney size, shade of renal cortex and Resistance index (RI). Renal biopsy showed inflammatory cell consisted of lymphocyte, eosinophil in parenchyme was seen with tubular necrosis parially. Renal function was improved after carbamazepine withdrawal and adrenocortical hormone medication.

신경정신장애 평가기준안 : 중추신경계

류성곤,정한용,유승호,정인과,안동현,김영철,최경숙,이경욱,우종민 大韓神經精神醫學會 2007 신경정신의학 Vol.46 No.4

Generally, the role of doctors has been limited in prevention, diagnosis and treatment of diseases. However, the role has recently expanded in improving the quality oflife and evaluating the impaimients of various disease. Evaluation of impairment in the psychiatric area has much more difficulty than others. Symptoms of psychiatric disorders have subjective, diverse and changeable. Also, Previous tools such as McBride Disability Evaluation, Law of Workmen's Accident Compensation Insurance and Law of National Compensation, are not accepted as universal instruments in psychiatric area because of their own limitation. Consequently, the Department of Impairment Evaluation Committee m Korean Neu-ropsychiatric Association has revised, evaluated and investigated previous diverse guidelines related with evaluation of Psy-chiatric impairments to make reasonable and adaptable new guidelines which include recent medical opinions. We hope this guideline could be used pertinently in evaluation of psychiatric impairment in every situations.

Amplitude death in a ring of nonidentical nonlinear oscillators with unidirectional coupling

Ryu, Jung-Wan,Kim, Jong-Ho,Son, Woo-Sik,Hwang, Dong-Uk American Institute of Physics 2017 Chaos Vol.27 No.8

Effects of a Trunk Stabilization Exercise with Gym Ball on Scapular Position for Patients with Arthroscopic Rotator Cuff Repair

Jung, Mi Young,Ryu, Young Uk 대한물리치료학회 2018 대한물리치료학회지 Vol.30 No.1

Purpose: The present study was to investigate effects of scapular position and pain on a trunk stabilization exercise with gym ball for patients with arthroscopic rotator cuff repair. Methods: Subjects were patients after 2 weeks of rotator cuff repairs. Subjects were randomly assigned to conservative treatment group (CTG, n=10) or trunk stabilization with gym ball group (SBG, n=10), and participated one of those groups for 2 weeks. Measurements about pain and scapular position were assessed in before and after treatment programs. Results: Pain reduced in both rest and night in SBG compared to CTG. In the case of scapular position, decreased scapular retraction (increased protraction) was found in CTG and vice versa in SBG. Reduced scapular anterior tilting was also found on SBG. Conclusion: The present study showed that early performed trunk stabilization with gym ball could bring a scapular alignment that increases subacromial space and reduces pain. This suggests early trunk stabilization with gym ball programs to restore shoulder functions for patients with rotator cuff repair.

Facilitated Axonal Regeneration of Injured Sciatic Nerves by Yukmijihwang-tang Treatment

Jung Hyun Kim,In Chan Seol,Ho Ryong Ryu,Hyun Kyung Jo,Joung Jo An,Uk Namgung,Yoon Sik Kim 한의병리학회 2008 동의생리병리학회지 Vol.22 No.4

INITIAL CONTROL FOR AN ADSORBATE-INDUCED PHASE TRANSITION MODEL

Ryu, Sang Uk,Jung, Seoung Dal 濟州大學校 基礎科學硏究所 2003 基礎科學硏究 Vol.16 No.2

본 논문에서는 피흡착질에 의하여 유도된 상전이 모델에 대한 초기치 제어 문제를 다루고 있다. 구체적으로, 적절한 비용함수를 선택하여 그 함수를 최소화하는 최적제어의 존재성을 보였다. 또한, 최적제어이론에서 중요한 문제중의 하나인 최적제어가 만족해야할 최적성의 필요조건을 얻었다. In this paper we are concerned with the initial control problem for an adsorbate-induced phase transition model. That is, we show the existence of the initial control and derive the optimality conditions by showing the differentiability of the cost functional.