• Asian Pacific Journal of Cancer Prevention
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• 제17권4호
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• pp.2049-2053
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• 2016

Background: The LigaSure vessel sealing system has been proposed to save operation time and reduce intraoperative blood loss for various surgeries. However, its usage for gastric cancer is still controversial. The aim of the present meta-analysis was to compare the effectiveness of LigaSure with conventional surgery in gastrectomy. Materials and Methods: Sources were retrieved from the Cochrane Library, MEDLINE, EMBASE, SCOPUS and Google Scholar until February, 2015. All randomized controlled trials comparing LigaSure with conventional surgery in curative gastric cancer resection were selected. After data extraction, statistics were performed by Review Manager 5.1 software. Results: Three eligible randomized controlled trials were evaluated, with a total of 335 patients. The quality of the included trials was good, yet some methodological and clinical heterogeneity existed. There were no significant differences between the LigaSure and conventional groups in operative time (weighted mean difference [WMD], -22.95 minutes; 95% confidence interval [CI], [-59.75, 13.85]; P = 0.22), blood loss (WMD, -45.8 ml; 95% CI, [-134.5, 42.90]; P = 0.31), nor the incidence of surgical complications (odds ratio, 1.18; 95% CI, [0.68, 2.05]; P = 0.54). But there was a longer duration of hospital stay in LigaSure group (WMD, 1.41 days; 95% CI, [0.14, 2.68]; P = 0.03). Conclusions: All available randomized evidence has been summarized. LigaSure does not confer significant advantage over conventional surgery for curative gastric cancer resection. The usefulness of the device may be limited in gastrectomy. But, more trials are needed for further assessment of the LigaSure system for gastric cancer.

• Asian Pacific Journal of Cancer Prevention
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• 제15권2호
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• pp.877-881
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• 2014

Objective: To evaluate risk factors for gallstones after gastrectomy. Methods: To identify documents published from 1990 to 2011 the Pubmed, Cochrane Library, Springer Link, CBM and WanFang databases were searched and a meta-analysis was performed with RevMan 5.2 software for odds ratios and 95%CIs. Results: Fifteen studies were selected for the meta-analysis. The pooled ORs [95%CIs] were 0.56 [0.43, 0.73], (P<0.0001) for digestive tract reconstruction, 0.80 [0.54, 1.17], (P=0.25) for pylorus preservation, 0.33[0.15, 0.75], (P=0.008) for resection scope of stomach, 0.33 [0.15, 0.75], (P=0.008) for lymphadenectomy, and 0.13 [0.05, 0.33], (P<0.0001) for vagotomy. Conclusions: Digestive tract physical reconstruction and vagus nerve preservation can reduce the morbidity of gallstones after gastrectomy. Total gastrectomy can add to the morbidity of galltones as does increasing the degree of lymph node dissection. There was no significant difference in gallstones with or without pylorus preservation.

• Asian Pacific Journal of Cancer Prevention
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• 제15권2호
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• pp.911-915
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• 2014

Aim: This study was to evaluate the effect of whole brain radiation (WBRT) combined with stereotactic radiotherapy (SRS) versus stereotactic radiotherapy alone for patients with brain metastases using a meta-analysis. Materials and Methods: We searched PubMed, EMBASE, Cochrane Library from their inception up to October 2013. Randomized controlled trials involving whole brain radiation combined with stereotactic radiotherapy versus stereotactic radiotherapy alone for brain metastases were included. Statistical analyses were performed using RevMan5.2 software. Results: Four randomized controlled trials including 903 patients were included. The meta-analysis showed statistically significant lowering of the local recurrence rate (OR=0.29, 95%CI: 0.17~0.49), new brain metastasis rate (OR=0.45, 95%CI: 0.28~0.71) and symptomatic late neurologic radiation toxicity rate (OR=3.92, 95%CI: 1.37~11.20) in the combined group. No statistically significant difference existed in the 1-year survival rate (OR=0.78, 95%CI: 0.60~1.03). Conclusions: The results indicate that whole brain radiotherapy combined with stereotactic radiotherapy has advantages in local recurrence and new brain metastasis rates, but stereotactic radiotherapy alone is associated with better neurological function. However, as the samples included were not large, more high-quality, large-sample size studies are necessary for confirmation.

• 한국콘텐츠학회논문지
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• 제11권10호
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• pp.30-40
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• 2011

최근 무선 통신 기술의 발전과 함께 스마트 폰 사용자의 급증으로 차세대 이동 통신에 대한 요구가 증가하고 있다. 차세대 이동통신 플랫폼을 빠른 시간 내에 효과적으로 구축하기 위해서는 프로토콜 개발 단계부터 안정화 단계까지 프로토콜의 검증 및 분석을 위한 지원도구가 필요하다. 따라서 본 논문에서는 차세대 이동통신 플랫폼의 선두 주자인 LTE 망을 위한 프로토콜 분석기를 제안한다. 제안하는 분석기는 연동 메시지를 XML 메타데이터로 기술하여 분석 시 활용한다. 또한, 디코더 라이브러리 로딩 기능을 이용하여 LTE 망에 적용된 인코딩 메시지에 대한 분석이 가능하다. 제안하는 분석기는 자체 설계된 LTE 망과의 연동 테스트를 통해 우수성을 검증한다.

• Journal of Korean Neurosurgical Society
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• 제63권4호
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• pp.477-486
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• 2020

Objectives : Due to recent developments and the wide application of percutaneous transforaminal discectomy (PTED) in China, we herein compare its clinical effects with microendoscopic discectomy (MED) for the treatment of lumbar disc herniation in terms of recurrence and revision rates. Methods : Six databases, namely, PubMed, EMBASE, Cochrane Library, Ovid, China National Knowledge Infrastructure and Wanfang, were searched by computer. The literature was screened according to inclusion and exclusion criteria, and the quality of the included literature was evaluated. After extracting the data from the papers, Review Manager 5.2 software (Cochrane Collaboration, Oxford, UK) was applied to analyze these data. Finally, sensitivity and publication bias analyses of the results were conducted. Results : A total of 12 studies consisting of 2400 patients were included in this meta-analysis. A comparison of PTED with MED revealed higher postoperative recurrence and postoperative revision rates for PTED (odds ratio [OR] recurrence, 1.60; 95% confidence interval [CI], 1.01 to 2.53; p=0.05 and OR revision, 1.77; 95% CI, 1.18 to 2.64, p=0.006). Conclusion : PTED has a number of advantages because it is a minimally invasive surgery, but its recurrence and revision rates are higher than MED. Therefore, MED should not be completely replaced by PTED.

• 한국통신학회논문지
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• 제39B권6호
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• pp.414-423
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• 2014

웹 페이지를 구성하는 리소소의 개수와 크기가 점점 증가하고 있으며, 이는 상대적으로 지연이 큰 모바일 네트워크에서 웹 서비스의 급격한 품질 저하로 이어지고 있다. 게다가 현재의 네트워크 구조는 폐쇄적인 구조를 가지고 있기 때문에 웹 서비스의 품질을 향상시키는 프로토콜을 개발할지라도 네트워크 기능으로 제공하기 어렵다는 문제가 있다. 본 논문에서는 모바일 네트워크에서 웹 성능을 향상시키기 위한 2가지 방안으로 Check Coded DOM 방안과 Functional JavaScript 전송 방안을 제안하고, NFV(Network Function Virtualization)를 활용하여 제안 방안이 네트워크 기능으로 제공될 수 있는 방안 모색 해본다. SMPL 라이브러리를 이용한 네트워크 시뮬레이션을 통해서 제안 방안의 성능을 평가하고 분석했으며, 제안 방안이 기존 HTTP 프로토콜보다 페이지 로딩 시간, 네트워크에 발생하는 메시지의 개수, 네트워크에 발생하는 트래픽 측면에서 향상된 성능을 제공함을 확인 할 수 있었다.

• Journal of Information Processing Systems
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• 제16권2호
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• pp.246-260
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• 2020

IT Service Management (ITSM) achieves consolidated management for the IT services supporting the acquisition system, and no outside connections can be established with such ITSM. Issues pertaining to the D2B can be addressed to System Q&A or a Call Center for problem-solving. In other words, internal staff can take the necessary measures for problems by directly connecting with ITSM. Currently, diverse innovative technologies are being used in electronics and ubiquitous computing environments. This allows us to create a better world by providing the backbone for remarkable development in our human society in the fields of electronics, devices, computer science, and engineering. Following the expansion of IT services in the military acquisition sector such as Defense Electronic Procurement, military export/import support system, etc., customers' dependence on IT for conducting business with the military or related companies is increasing, including the military's dependence on the same technology for services to the public. Nonetheless, issues pertaining to the simplified/integrated management of complex IT service management systems, including slow system recovery, lack of integrated customer service window, and insufficient information sharing, have become the priority problems that IT managers are required to solve. Therefore, this study conducted research on the integrated management of IT services provided by Korea's national defense acquisition system, which was developed based on the existing system IT Infrastructure Library (ITIL) v2, and investigated the level of satisfaction with services with focus on ensuring that it can be used for understanding the necessity of the system and its advancement in the future.

• 한국콘텐츠학회논문지
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• 제11권11호
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• pp.91-101
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• 2011

이 연구는 헤어라인 교정을 위한 웹 베이스의 3D 얼굴 모델링 구축을 목적으로 하고 있다. 미(美)에 대한 현대사회의 얼굴에 대한 관심은 광범위한 개인의 모바일 스마트 ICT 기기의 시대와 함께 의료 정보 시스템의 필요성 역시 급격하게 증가하고 있다. 이 연구는 기존의 기술의 독점과 배포 가능한 3D 모델링 라이브러리 구축을 시도하려 한다. 우리는 실험 결과를 통하여 새로운 웹 베이스 표준 개발을 위한 문제점 및 요구사항을 찾을 수 있었다. 우리는 우리의 실험과 관련 기술에 관한 문헌 검토에 따른 새로운 시스템을 제안하고자 한다. 우리가 제안하고자 하는 시스템의 주된 특징은 의과학, 미용학과 정보 기술을 기반으로 한 탈모 치료에 대한 연구이다. 이 시스템은 2D 정면 이미지를 3D mesh-data와 함께 얼굴 모델링을 진행한다. 이 mesh-data는 SVG를 포합한 웹 표준 기술과 HTML5에 의해 기본적으로 지원되는 Canvas Tag와 호환이 된다.

• The Journal of Korean Physical Therapy
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• 제31권6호
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• pp.358-362
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• 2019

Purpose: We investigated the difference in injury of the corticospinal tract (CST) and the spinothalamic tract (STT) in patients with putaminal hemorrhage, using diffusion tensor tractography (DTT). Methods: Thirty one consecutive patients with PH and 34 control subjects were recruited for this study. DTT scanning was performed at early stage of PH (7-63 days), and the CST and STT were reconstructed using the Functional Magnetic Resonance Imaging of Brain (FMRIB) Software Library program. Injury of the CST and STT was defined in terms of the configuration or abnormal DTT parameters was more than 2 standard deviations lower than that of normal control subjects. Results: Among 31 patients, all 31 patients (100%) had injury of the CTS, whereas 25 patients (80.6%) had injury of the STT: the incidence of CST injury was significantly higher than that of STT (p<0.05). In detail, 20 (64.5%) of 31 patients showed a discontinuation of the CST in the affected hemisphere; in contrast, 14 patients (45.2%) of 31 patients showed a discontinuation of the STT in the affected hemisphere. Regarding the FA value, 6 (19.4%) of 31 patients and 2 (6.4%) of 31 patients were found to have injury in the CST and STT, respectively. In terms of the fiber number, the same injury incidence was observed in 11 patients (35.5%) in both the CST and STT. Conclusion: The greater vulnerability of the CST appears to be ascribed to the anatomical characteristics; the CST is located anteriorly to the center of the putamen compared with the STT.

• Journal of Gastric Cancer
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• 제15권4호
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• pp.256-261
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• 2015

Purpose: Gastric cancer is the third leading cause of cancer-related mortality, with the incidence and mortality being higher in men than in women. Various studies have shown that eating carrots may play a major role in the prevention of gastric cancer. We conducted a meta-analysis to determine the relationship between carrot consumption and gastric cancer. Materials and Methods: We searched multiple databases including PubMed, Cochrane Library, Scopus, ScienceDirect, and Persian databases like Scientific Information Database (SID) and IranMedx. The following search terms were used: stomach or gastric, neoplasm or cancer, carcinoma or tumor, and carrot. Statistical analyses were performed using Comprehensive Meta Analysis/2.0 software. Results: We retrieved 81 articles by searching the databases. After considering the inclusion and exclusion criteria, 5 articles were included in this study. The odds ratio (OR) obtained by fixed effects model showed that a 26% reduction in the risk of gastric cancer has been associated with the consumption of carrots) OR=0.74; 95% confidence interval=0.68~0.81; P<0.0001). According to funnel graph, the results showed that the possibility of a publication bias does not exist in this study. Conclusions: The findings of this study showed an inverse relationship between the consumption of carrots and the risk of gastric cancer.