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( Jong Lyul Lee ),( Chang Sik Yu ),( Seok Byung Lim ),( Tae Won Kim ),( Jong Hoon Kim ),( Jin Cheon Kim ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1
Background:Precise understanding of recurrence patterns permits effi cient surveillance and effective treatment strategies. The aim of this study was to evaluate recurrence patterns after treatment of rectal cancers, specifi cally with respect to tumor location and chemoradiotherapy (CRT). Methods:A single-institution, retrospective cohort of 2,086 consecutive rectal cancer patients was enrolled between January, 2000 and December, 2007. All the patientsunderwent curative operations (R0). Tumor location was classifi ed into lower (=5cm), middle (>5cm - = 8cm), and upper (> 8cm) groups based on the distance of the inferior tumor border from the anal verge; the patients were also characterized according to whether they received preoperative/postoperative CRT. Results: The lung was the most common recurrence site in the lower group (lower vs. middle/ upper; 14.6% vs. 8.9%/ 8.0%, P = 0.001/ 0.001). Recurrence patterns were not associated with receipt of preoperative/postoperative CRT. Additionally, RT and CRT did not reduce the rate of pulmonary recurrence (no RT/preoperative CRT/postoperative CRT, 37.5/37.9/42.6%; P = 0.13). In a multivariate analysis, preoperative level of serum carcinoembryonic antigen, abdominoperineal resection, advanced T category, N category, and circumferential resection margin were identifi ed as independent risk factors for pulmonary recurrence in all groups. Otherwise, low rectal cancer was associated with unresectable pulmonary recurrence (RR = 2.19; 95% CI = 1.012-3.072; P = 0.04). Conclusions: Neither RT nor CRT affects the pattern and rate of recurrence. Tumor location specifi cally affects recurrence in rectal cancer patients, such that the lower group is a risk factor for unresectable pulmonary recurrences.
Comparison of abdominal and perineal procedures for complete rectal prolapse
Jong Lyul Lee,Sung Soo Yang,In Ja Park,Chang Sik Yu,Jin Cheon Kim 대한외과학회 2014 Annals of Surgical Treatment and Research(ASRT) Vol.86 No.5
Purpose: Selecting the best surgical approach for treating complete rectal prolapse involves comparing the operative and functional outcomes of the procedures. The aims of this study were to evaluate and compare the operative and functional outcomes of abdominal and perineal surgical procedures for patients with complete rectal prolapse. Methods: A retrospective study of patients with complete rectal prolapse who had operations at a tertiary referral hospital and a university hospital between March 1990 and May 2011 was conducted. Patients were classified according to the type of operation: abdominal procedure (AP) (n = 64) or perineal procedure (PP) (n = 40). The operative outcomes and functional results were assessed. Results: The AP group had the younger and more men than the PP group. The AP group had longer operation times than the PP group (165 minutes vs. 70 minutes; P = 0.001) and longer hospital stays (10 days vs. 7 days; P = 0.001), but a lower overall recurrence rate (6.3% vs. 15.0%; P = 0.14). The overall rate of the major complication was similar in the both groups (10.9% vs. 6.8%; P = 0.47). The patients in the AP group complained more frequently of constipation than of incontinence, conversely, in the PP group of incontinence than of constipation. Conclusion: The two approaches for treating complete rectal prolapse did not differ with regard to postoperative morbidity, but the overall recurrence tended to occur frequently among patients in the PP group. Functional results after each surgical approach need to be considered for the selection of procedure.
Mobile Web Service Performance Enhancement by Simplifying Architecture
Soo-Lyul Oh,Gab-Sang Ryu,Chul Kim 한국정보교육학회 2011 정보교육학회논문지 Vol.15 No.2
본 논문에서는 모바일 웹서비스 구현 환경을 최소화하면서 서비스 성능을 향상시키는 개선된 처리기를 설계 제안하였다. 웹 서비스를 구현하기 위해서는 표준에 규정된 WSDL코드를 가지고 SOAP 통신을 해야 한다. 그러므로 WSDL 및 SOAP를 구현하면 기본적인 웹 서비스가 가능하다. 또한 웹 통신을 위해 Tomcat과 AXIS 라이브러리를 사용해야한다. 그러나 Tomcat의 사용은 추가적인 네트워크 사용과 시스템에 프로세스로 상주하여 시스템 자원을 사용하는 문제가 있기 때문에 구현시 오버헤드를 발생시킬 수 있다. 본 논문은 오버헤드의 원인인 Tomcat을 사용하지 않고 모바일 웹 서비스를 구현함으로써 네트워크 자원과 시스템 자원을 절약할 수 있으면서 성능을 향상시키는 효율적 처리기를 설계 구현하였다. In this paper, we suggest performance enhanced Mobile Web service architecture. Mobile Web Services are new technology that integrates different applications to provide interoperability. SOAP is a lightweight message exchanging protocol and is a principal factor that decides the Web Services performance. When a mobile Web Service is implemented with the Java technology, it should be implemented with both a SOAP message processor like AXIS, and Java Servlet container (e.g. Tomcat). This typical implementation is not efficient because it requires an additional communication port and process. In this paper, we suggest a new method that replaces this typical approach to enhance Web Service performance.