사용자 행위 추적 시스템의 그래프 분석 도구 개발에 관한 연구

이윤경 ( Yoon-kyung Lee ),정수정 ( Su-jeong Cheong ),송수경 ( Soo-kyung Song ),이민수 ( Min-soo Lee ) 한국정보처리학회 2007 한국정보처리학회 학술대회논문집 Vol.14 No.1

사용자의 행동 모니터링에 대한 이전의 기술적인 연구는 네트워크 트래픽과 데이터베이스 접근 형태에 집중되어 왔다. 이전의 연구는 자료를 공유하고 교환하는 것 같은 사용자들 사이의 상호작용을 관찰하는 부분에 있어서는 부족하다. 즉, 사용자와 사용자의 행동 정보를 수집하고 그 자료에 바탕을 두고 상호작용을 시각적으로 관찰할 수 있어야 한다. 따라서 수집된 자료의 좀 더 분석적인 관찰을 위해서 지금까지의 개발되고 사용된 여러 가지 컴포넌트를 사용하여 이 같은 상호작용을 여러 가지 형태의 그래프로 표현할 수 있는 그래픽 툴을 개발한다.

XML 질의의 수행성능 향상을 위한 트리 구조 XPath 질의의 축약 기법에 관한 연구

이민수,김윤미,송수경,Lee, Min-Soo,Kim, Yun-Mi,Song, Soo-Kyung 한국정보처리학회 2007 정보처리학회논문지D Vol.14 No.6

일반적으로 XML 데이터는 트리 형태의 계층적인 구조를 가지고 있으며, XML 데이터의 저장 및 검색도 이러한 특성을 반영한다. 따라서 XML 데이터를 데이터베이스화 할 때에 XML 엘리먼트 간의 이러한 계층 관계를 반영하여 XML 데이터를 구조화하여 저장하고, 사용자의 검색을 지원하기 위해서는 질의에 명세 된 엘리먼트 구조 간의 계층 관계를 계산하여 처리하는 방법이 필요하다. 구조적 조인(structural joins) 연산은 이 문제의 한 해결책으로서 노드 번호 매기기 방식(node numbering scheme)에 기반한 XML 데이터베이스에 대하여 효율적인 계층 관계 연산 기법을 제시하고 있다. 하지만 계층 관계가 복잡하게 중첩되어 있는 트리 구조의 XML 질의를 처리하려면 여전히 다수의 구조적 조인을 수행해야 하기 때문에 질의 처리 비용이 많이 드는 또 다른 문제를 갖게 된다. 이에 본 논문에서는 선행 연구에서 제안된 트리 구조의 XML 질의 처리시에 필요한 다수의 중첩된 구조적 조인들의 수행비용을 효과적으로 줄이기 위한 사전 처리 방법으로서 동등 클래스 개념을 적용한 정규 표현식(regular expression)으로 된 경로 질의(path query)의 길이를 단축하는 경로식 단축 알고리즘을 소개하며 특히 분기 노드(branch node)가 포함된 경로식 단축 알고리즘을 제안한다. 제안한 알고리즘이 XML 경로식 질의 처리 시간을 평균적으로 1/3로 단축할 수 있음을 실험을 통해서 확인한다. XML data generally consists of a hierarchical tree-structure which is reflected in mechanisms to store and retrieve XML data. Therefore, when storing XML data in the database, the hierarchical relationships among the XML elements are taken into consideration during the restructuring and storing of the XML data. Also, in order to support the search queries from the user, a mechanism is needed to compute the hierarchical relationship between the element structures specified by the query. The structural join operation is one solution to this problem, and is an efficient computation method for hierarchical relationships in an in database based on the node numbering scheme. However, in order to process a tree structured XML query which contains a complex nested hierarchical relationship it still needs to carry out multiple structural joins and results in another problem of having a high query execution cost. Therefore, in this paper we provide a preprocessing mechanism for effectively reducing the cost of multiple nested structural joins by applying the concept of equivalence classes and suggest a query path reduction algorithm to shorten the path query which consists of a regular expression. The mechanism is especially devised to reduce path queries containing branch nodes. The experimental results show that the proposed algorithm can reduce the time requited for processing the path queries to 1/3 of the original execution time.

경막외 상용량의 Morphine 주입 후 발생한 신경흥분 - 증례 보고 -

윤건중 ( Keon Jung Yoon ),송수경 ( Soo Kyung Song ),성춘호 ( Choon Ho Sung ),유건희 ( Keon Hee Ryu ),문동언 ( Dong Eon Moon ) 대한통증학회 2002 The Korean Journal of Pain Vol.15 No.2

XQuery에서의 XML 데이터 특성을 고려한 group by 지원을 위한 질의 표현 기법에 대한 연구

이민수,조혜영,오정선,김윤미,송수경,Lee Min-Soo,Cho Hye-Young,Oh Jung-Sun,Kim Yun-Mi,Song Soo-Kyung 한국정보처리학회 2006 정보처리학회논문지D Vol.13 No.4

현재 널리 채택되고 있는 XML은 플랫폼에 의존하지 않는 데이터 표현 형식으로 B2B 응용 프로그램이나 워크플로우 상황에서처럼 느슨하게 연결된(loosely coupled) 이기종 시스템 간에 정보를 교환하는 데 매우 유용하게 사용되고 있다. XML의 이러한 장점 때문에 점차 증가하는 XML에 대한 관리 및 검색에 대한 요구 사항에 대처할 수 있도록 강력한 질의 언어인 XQuery가 만들어졌다. 문서의 검색을 위한 질의 언어인 XQuery는 다양한 데이터 소스로부터 가져온 XML 데이터를 고유한 구조를 가진 질의 결과로 구성할 수 있도록 설계되었으며 현재 XML 질의 언어의 표준이다. XQuery는 반복문 등을 포함하는 강력한 검색 기능을 지원하나 데이터를 그룹화 하는 경우에는 질의 표현이 상대적으로 어렵고, 복잡한 형태를 취한다. 따라서 본 논문에서는 XQuery에 그룹화 처리를 위한 명시적인 groupby절을 도입한 질의 표현 기법을 모색함으로써 XML 데이터의 재구성과 집계 함수 처리를 위한 그룹화를 보다 효율적으로 처리할 수 있도록 하였다. 이를 위해서 XQuery에 groupby절을 도입하기 위한 EBNF(Extended Backus-Naur Form)를 제안하고, 네이티브 XML 데이터베이스인 eXist 기반의 XQuery 그룹화 질의 처리 시스템을 구현하였다. XML is the most popular platform-independent data expression which is used to communicate between loosely coupled heterogeneous systems such as B2B Applications or Workflow systems. The powerful query language XQuery has been developed to support diverse needs for querying XML documents. XQuery is designed to configure results from diverse data sources into a uniquely structured query result. Therefore, it became the standard for the XML query language. Although the latest XQuery supports heavy search functions including iterations, the grouping mechanism for data is too primitive and makes the query expression difficult and complex. Therefore, this work is focused on supporting the groupby clause in the query expression to process XQuery grouping. We suggest it to be a more efficient way to process grouping for restructuring and aggregation functions on XML data. We propose an XQuery EBNF that includes the groupby clause and implemented an XQuery processing system with grouping functions based on the eXist Native XML Database.

다직종 암환자 교육·상담에 대한 설문 개발과 환자 만족도 조사

이민정,금민정,김재송,김수현,손은선,이상글,송수경,최혜진,Lee, Min Jeong,Geum, Min Jung,Kim, Jae Song,Kim, Soo Hyun,Son, Eun Sun,Lee, Sang Geul,Song, Su Kyung,Choi, Hye Jin 한국임상약학회 2018 한국임상약학회지 Vol.28 No.2

Background: Presently, a multidisciplinary team of doctors, pharmacists, nurses, and dietitians provides patient education to impart information on chemotherapy. However, studies on multidisciplinary education satisfaction are inadequate. In this study, we aimed to contribute to the improvement of quality of multidisciplinary education counseling for patients with cancer by developing a satisfaction questionnaire and analyzing the satisfaction survey. Methods: A questionnaire was developed by an expert group, and the responses were recorded using the 5-point Likert scale. After conducting a pre-test, factor analysis was performed to evaluate validity. The reliability of the questionnaire was measured by Cronbach's alpha coefficient. A satisfaction survey was conducted by self-administration method. Results: Based on the results of factor analysis, factors can be divided into two parts: "overall education" and "each team member's education" (total 14 questions). The construct validity and reliability of the questionnaire are sufficiently high. Fifty-one patients took the survey between January 2, 2018 and January 20, 2018. Twenty-six (51%) patients responded that they were "very satisfied" and 22 (43.1%) patients responded that they were "satisfied". Conclusion: By developing a questionnaire on multidisciplinary education counseling for patients with cancer, it is possible to perform evaluation and research of cancer patient education. This study will contribute to the management and improvement of quality of multidisciplinary education.

임신성 당뇨와 고혈압으로 발현되어 진단되었던 갈색 세포종 1예

김유지 ( Yu Ji Kim ),윤지영 ( Ji Young Yoon ),송수경 ( Soo Kyeong Song ),조인진 ( In Jin Cho ),박성철 ( Sung Chul Park ),임정호 ( Jung Ho Lim ),정주영 ( Joo Young Chung ),이현 ( Hyun Lee ),이경애 ( Kyung Ae Lee ) 전북대학교 의과학연구소 2013 全北醫大論文集 Vol.37 No.1

Pheochromocytoma is derived from the chromaffin tissue. This tumor is characterized by a combination of various clinical manifestations that include the paroxysmal hypertension, severe headache, palpitations and diaphoresis. In addition, hyperglycemia can be caused by the excess of catecholamines or other bioactive substances. Pheochromocytoma during pregnancy is rare and associated with very high maternal and fetal morbidity and mortality. We present case a 27-year-old pregnant woman at 22th weeks of gestation with uncontrolled hypertension and gestational diabetes mellitus. She was admitted with an initial diagnosis of preeclampsia. Ultrasound revealed a right adrenal mass and biochemical test and MRI imaging were compatible with pheochromocytoma. Laparoscopic adrenalectomy was performed and her blood pressure and blood sugar level was normalized without medication after adrenalectomy. The diagnosis of pheochromocytoma in pregnant patients is often missed because these tumors have the ability to produce signs and symptoms that mimic other forms of hypertension and diabetes, including the gestational hypertension, gestational diabetes mellitus and preeclampsia. Therefore, clinicians should consider pheochromocytoma as differential diagnosis in pregnant patients with uncontrolled hypertension and diabetes.

만성 폐전색증환자의 색전제거술 후 발생한 급성 호흡부전

심재용,권오경,송수경 대한마취과학회 1998 Korean Journal of Anesthesiology Vol.35 No.4

Thrombolytic therapy is usually reserved for patients with clinically serious or massive pulmonary embolism. In desperated cases, however, pulmonary embolectomy is recommended despite its high mortality rate. We experienced acute respiraory failure after embolectomy performed under cardiopulmonary bypass in patient with chronic massive pulmonary embolism. The patient recovered sucessfully with postoperative management in the intensive care unit. (Korean J Anesthesiol 1998; 35: 772∼776)

동일 용량하에서 각각 다르게 분할 투여된 경막외 Morphine 이 술 후 제통효과와 부작용에 미치는 효과의 비교

김태현,최종호,송수경 대한마취과학회 2002 Korean Journal of Anesthesiology Vol.42 No.1

Background : Epidural coadministration of opioids and local anesthetics has provided excellent analgesia during the postoperative period. The appropriate amount of epidural morphine for pain control with minimum side effects has been studied. Recently, we gave 6 ㎎ of epidural morphine for 2 day pain control and discovered it was a safe and effective does like the previous study result. This study was performed to compare postoperative analgesia and side effects according to different loading and infusion doese of morphine with the same total dose. Methods : Forty-three patients having epiduro-general anesthesia for a hysterectomy were randomly divided into 2 groups. The patients received 2 ㎎ (Control group, n = 19) or 3 ㎎ (Experimental group, n = 24) of epidural morphine by bolus and a continuous epidural infusion was started using a two day infusor containing 4 ㎎ (Control group) or 3 ㎎ (Experimental group) of morphine in 100 ml of 0.125% bupivacaine. Visual analog scale (VAS) for pain, severity of nausea, itching and respiratory depression were assessed at 2, 4, 8, 16, 32 and 48 hours postoperatively. All data was evaluated with unpaired t-test for significances between the two groups. Results : Analgesia between the two groups showed good results. The VAS in the experimental group were higher than the control group in the early postoperative period. Nausea scores were no different between the two groups. The itching scores in the experimental group were lower than the control group at postoperative 16 and 32 hours. No respiratory depression was reported in either group. Conclusions : This study suggests that different loading and infusion doses of the same total epidural morphine between two groups provided good postoperative pain relief without any differences in side effects. (Korean J Anesthesiol 2002; 42: 78~82)

간 재이식술의 마취경험

최종호,심재용,김은성,유건희,이재민,송수경,문동언,이영주,김성년,박철수 대한마취과학회 1998 Korean Journal of Anesthesiology Vol.34 No.5

Orthotopic liver transplantation has been an established medical therapy for almost any end-stage liver disease. In spite of improved survival rates following transplantation, acute or chronic allograft failure requiring hepatic retransplantation still occurs with an incidence of 9% to 22%. We experienced one case of anesthesia for liver retransplantation in 30-year-old male patient with posttransplantation hepatic arterial thrombosis. He had taken primary liver transplantation due to hepatocelluar carcinoma 15days before retransplantation. The operation was finished successfully after 10hours of anesthesia with anhepatic time of 65 minutes. Careful attention was paid to eletrolyte balance, blood coagulation function as well as cardiovascular and respiratory function. Hemodynamic value was relatively stable throughout the operation and postoperative mechanical ventilatory support was required for about 15 hours. (Korean J Anesthesiol 1998; 34: 1066∼1070)