• 한국정보통신학회논문지
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• 제23권12호
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• pp.1485-1491
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• 2019

오늘날 생체신호의 종류 및 크기가 방대해짐에 따라 생체신호를 빅데이터로 정의하고 이를 분석하고자 하는 연구가 활발히 진행되고 있다. 하지만 생체신호를 빅데이터로 처리함에 있어 소셜 네트워크에서 발생하는 빅데이터 처리와 비슷한 방법을 이용하고 있다. 생체신호 빅데이터는 특징값을 추출하여 이를 별도로 저장하고 다양한 분석기기로 분석할 수 있어야 한다. 즉 데이터의 상호운용성과 호환성이 보장되어야 하며 분석도구에서의 지표 표현이 간결해야 한다. 이를 위하여 본 논문에서는 생체신호를 표준화된 HL7의 표준 메타모델기반으로 표현하고 OMG의 표준 수학적 명세 언어인 OCL을 이용하여 생체신호를 분석하는 모델을 제안한다. 또한 제안한 모델을 이용하여 심전도 데이터를 이용한 칼로리 소모량을 구해봄으로써 활용 가능성을 확인한다.

• 지식경영연구
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• 제22권3호
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• pp.151-172
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• 2021

정부의 카드 가맹점 수수료율 인하 및 최고금리 인하와 같은 고객 친화적인 금융정책의 시행으로 여신전문금융사는 수익성 저하의 위기 상황에 처했다. 이런 비우호적인 상황에서 여신전문금융사의 효율성 연구는 의미가 있다. 이에 본 연구는 자료포락분석(Data Envelopment Analysis: DEA)과 메타프론티어(Meta-Frontier) 분석을 통해 34개 여신전문금융회사의 효율성을 측정하였다. 메타프론티어 분석을 위해 여신전문금융회사를 업종에 따라 두 그룹(카드사와 비카드사)으로 분류하거나 신용등급에 따라 세 그룹(AA0 이상, AA-, A+ 이하)으로 분류하였다. 분석 결과는 여신전문금융회사의 효율성에 대한 유용한 정보를 제공할 것이다. 본 연구의 시사점은 다음과 같다. 첫째, 카드사의 평균 메타 효율이 비카드사 평균 메타 효율 보다 높게 분석되었다. 이 결과는 비카드사가 효율성을 향상시키기 위한 전략적 대안이 필요함을 보여준다. 둘째, 비카드사의 80%가 규모에 의한 비효율 보다 순수기술에 의한 비효율이 발생하였다. 그 회사들은 비효율을 낮추기 위한 조치를 해야 한다. 셋째, 카드사 그룹의 62.5%와 'AA-'신용등급 그룹의 80%에 해당하는 의사 결정 단위(DMU)가 규모수익체감(Decreasing Return-to-scale: DRS)에 해당되어 규모의 비경제(Diseconomics of Scale) 상태 영역에 위치하고 있다. 해당되는 회사들은 규모를 축소하여 효율성을 증진시켜야 한다. 넷째, 여신전문금융회사의 업종별(카드사, 비카드사) 그룹과 신용등급별(AA0 이상, AA-, A+ 이하) 메타 효율성 값(TE 및 PTE)이 통계적으로 유의한 차이가 없었다. 본 연구의 공헌은 여신전문금융회사에 비우호적인 경영환경 하에서 회사들의 효율성 수준을 측정하여 비효율을 개선시킬 경영 전략 수립을 위한 전략적 이니셔티브를 제공할 것이다.

• 디지털융복합연구
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• 제11권5호
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• pp.437-442
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• 2013

최근에는 IT와 관광을 융합하는 IT관광 융합학문이 미래학문으로 떠오르고 있다. 본 연구는 u-스마트 관광정보 시스템을 이용한 콘텐츠 정보품질에 대한 사항들을 설계 및 구현한다. 이것은 관광정보 패턴 템플리트 라이브러리에 있는 콘텐츠 정보품질 사항을 구현함으로써 관광객의 관광성향과 관광평점을 분석할 수 있는 기초 프로세스와 데이터를 생성할 수 있다. 본 논문은 스마트 앱과 XMI를 활용하여 관광정보 콘텐츠 정보품질에 맞는 콘텐츠를 생성하고 구현함으로써 관광정보와 관광객의 성향을 실시간으로 알 수 있는 것이 장점이다. 뿐만 아니라, 스마트 앱으로 메타모델 연결관계 상호 관련기 프로세스를 거쳐 메타 모델화할 수 있다. 관광정보 콘텐츠의 정보품질을 구현함으로써 관광객의 성향을 파악할 수 있으며 향후 관광디지털정책을 디자인할 수 있는 모형개발에 도움을 준다.

• Asian Pacific Journal of Cancer Prevention
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• 제13권11호
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• pp.5665-5669
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• 2012

Background: The vascular endothelial growth factor (VEGF) mediates vasculogenesis and angiogenesis through promoting endothelial cell growth, migration and mitosis, and has involvement in cancer pathogenesis, progression and metastasis. However, the prognostic value of VEGF in patients with prostate cancer remains controversial. Objectives: The aim of our study was to evaluate the prognostic value of VEGF in prostate cancer, and summarise the results of related research on VEGF. Methods: In accordance with an established search strategy, 11 studies with 1,529 patients were included in our meta-analysis. The correlation of VEGF-expression with overall survival and progression-free survival was evaluated by hazard ratio, either given or calculated. Results: The studies were categorized by introduction of the author, demographic data in each study, prostate cancer-relatived information, VEGF cut-off value, VEGF subtype, methods of hazard ratio (HR) estimation and its 95% confidence interval (CI). High VEGF-expression in prostate cancer is a poor prognostic factor with statistical significance for OS (HR=2.32, 95%CI: 1.40-3.24). However, high VEGF-expression showed no effect on poor PFS (HR=1.30, 95%CI: 0.88-1.72). Using Begg's, Egger's test and funnel plots, we confirmed lack of publication bias in our analysis. Conclusion: VEGF might be regarded as a prognostic maker for prostate cancer, as supported by our meta-analysis. To achieve a more definitive conclusion enabling the clinical use of VEGF in prostate cancer, we need more high-quality interventional original studies following agreed research approaches or standards.

• Asian Pacific Journal of Cancer Prevention
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• 제15권19호
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• pp.8361-8366
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• 2014

This meta-analysis was performed to assess the implementation effects of clinical pathways in patients with gastrointestinal cancer. A comprehensive search was conducted in the Cochrane Library, PubMed, EMBASE, Web of Science and Chinese Biomedical Literature Database (from inception to May 2014). Selection of studies, assessing risk of bias and extracting data were performed by two reviewers independently. Outcomes were analyzed by fixed-effects and random-effects model meta-analysis and reported as mean difference (MD), standardized mean difference (SMD) and odds ratio (OR) with 95% confidence intervals (CI). The Jadad methodological approach was used to assess the quality of included studies and the meta-analysis was conducted with RevMan 5.1 software. Nine citations (eight trials) involving 642 patients were included. The aggregate results showed that a shorter average length of stay [MD = -4.0; 95% CI (-5.1, -2.8); P < 0.00001] was observed with the clinical pathways as compared with the usual care. A reduction in inpatient expenditure [SMD = -1.5; 95% CI (-2.3, -0.7); P = 0.0001] was also associated with clinical pathways, along with higher patient satisfaction [OR = 4.9; 95% CI (2.2, 10.6); P < 0.0001]. Clinical pathways could improve the quality of care in patients with gastrointestinal cancer, as evidenced by a significant reduction in average length of stay, a decrease in inpatient expenditure and an improvement in patient satisfaction. Therefore, indicators and mechanisms within clinical pathways should be a focus in the future.

• 대한간호학회지
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• 제45권4호
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• pp.469-482
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• 2015

Purpose: The purpose of this study was to identify which nursing interventions are the most effective in fall prevention for hospitalized patients. Methods: From 3,675 papers searched, 34 were selected for inclusion in the meta-analysis. Number of fallers, falls, falls per 1,000 hospital-days, and injurious falls, fall protection activity, knowledge related to falls, and self-efficacy about falls were evaluated as outcome variables. Data were analyzed using the Comprehensive Meta Analysis (CMA) 2.2 Version program and the effect sizes were shown as the Odd Ratio (OR) and Hedges's g. Results: Overall effect size of nursing interventions for fall prevention was OR=0.64 (95% CI: 0.57~0.73, p <.05) and Hedges's g= - 0.24. The effect sizes (OR) of each intervention ranged from 0.34 to 0.93, and the most effective nursing intervention was the education & environment intervention (OR=0.34, 95% CI: 0.28~0.42, p<.001), followed by education intervention (OR=0.57, 95% CI: 0.50~0.67, p=.001). Subgroup analyses showed that multifaceted interventions (OR=0.76, 95% CI: 0.73~0.79, p<.001) were more effective than unifactorial interventions, and that activities for prevention of falls (OR=0.08, 95% CI: 0.05~0.15, p<.001) showed the largest effect size among outcome variables. Conclusion: Falls in hospitalized patients can be effectively prevented using the nursing interventions identified in this study. These findings provide scientific evidence for developing and using effective nursing interventions to improve the safety of hospitalized patients.

• 대한치과교정학회지
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• 제47권6호
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• pp.401-413
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• 2017

Objective: The aim of this systematic review was to assess the occlusal outcome and duration of fixed orthodontic therapy from clinical trials in humans with the Objective Grading System (OGS) proposed by the American Board of Orthodontics. Methods: Nine databases were searched up to October 2016 for prospective/retrospective clinical trials assessing the outcomes of orthodontic therapy with fixed appliances. After duplicate study selection, data extraction, and risk of bias assessment according to the Cochrane guidelines, random-effects meta-analyses of the mean OGS score and treatment duration were performed and 95% confidence intervals (CIs) were calculated. Results: A total of 34 relevant clinical trials including 6,207 patients (40% male, 60% female; average age, 18.4 years) were identified. The average OGS score after treatment was 27.9 points (95% CI, 25.3-30.6 points), while the average treatment duration was 24.9 months (95% CI, 24.6-25.1 months). There was no significant association between occlusal outcome and treatment duration, while considerable heterogeneity was identified. In addition, orthodontic treatment involving extraction of four premolars appeared to have an important effect on both outcomes and duration of treatment. Finally, only 10 (39%) of the identified studies matched compared groups by initial malocclusion severity, although meta-epidemiological evidence suggested that matching may have significantly influenced their results. Conclusions: The findings from this systematic review suggest that the occlusal outcomes of fixed appliance treatment vary considerably, with no significant association between treatment outcomes and duration. Prospective matched clinical studies that use the OGS tool are needed to compare the effectiveness of orthodontic appliances.

• Asian Pacific Journal of Cancer Prevention
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• 제17권10호
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• pp.4615-4621
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• 2016

Background: There has not been a general estimation about survival rates of breast cancer cases in Iran. Therefore, the present study aimed to assess survival using a meta-analysis. Materials and Methods: International credible databases such as Scopus, Web of Science, PubMed, Science direct and Google Scholar and Iranian databases such as Magiran, Irandoc and SID, from 1997 to 2015 were searched. All articles covering survival rate of breast cancer were entered into the study without any limits. Quality assessment of the articles and data extraction were performed by two researchers using the modified STROBE checklist, which includes 12 questions. Articles with scores greater than 8 were included in the analysis. A limitation of this meta-analysis was different methods for presenting of results in the papers surveyed. Results: A total of 21 articles with a sample of 12,195 people were analyzed. The one-year, three-year, five-year and ten-year survival rates of breast cancer in Iran were estimated to be 95.8% (94.6-97.0), 82.4% (79.0-85.8), 69.5% (64.5-74.5), 58.1% (39.6-76.6), respectively. The most important factors affecting survival of breast cancer were age, number of lymph nodes involved, size of the tumor and the stage of the disease. Conclusion: The five- and ten- year survival rates in Iran are lower than in developed countries. Conducting breast cancer screening plan support (including regular clinical examination, mammography), public training and raising awareness should be helpful in facilitating early diagnosis and increasing survival rates for Iranian women.

• 한국재난정보학회 논문집
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• 제14권2호
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• pp.203-210
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• 2018

연구목적: 본 연구는 국가기반체계 메타평가를 위한 모형을 구축하고 구축된 모형을 이용하여 국가기반체계의 평가시스템 개선을 목적으로 한다. 연구방법: 연구를 위해 재난 관련 법령과 정부에서 발간한 국가기반체계 평가보고서, 국가기반체계 보호계획 수립지침, 메타평가 선행연구자료 등 문헌자료와 국가기반체계 담당공무원, 평가위원, 피평가기관 업무담당자의 의견을 수렴하여 평가실태를 분석하였다. 연구결과: 현행 국가기반체계 평가지표 중 재난대응 교육 훈련계획 및 이행의 적정성, 평가이해관계자와 의사소통, 평가위원 교육시간 등 7개 지표에서 보완 소요가 도출되었다. 결론: 본 연구를 통해 도출된 개선방안을 국가기반체계 평가지표 개선에 활용할 수 있을 것으로 기대된다.

• The Journal of Korean Physical Therapy
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• 제32권5호
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• pp.312-318
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• 2020

Purpose: This study aimed to investigate the evidence that therapeutic horseback riding can improve balance, muscle, ADL, equivalenc, GMFM, gait, emotion with developmental disabilities and neural patients. Methods: To conduct meta-analysis, the search focused on studies that employed therapeutic horseback riding for developmental disabilities and neural patients for which eight databases (KIS, RISS, DBpia, National Assembly Library, Pubmed, Embase, Google scholar and Cochrane Library) were used to extract literature published from 2002 to September 2019. The data were analyzed the RevMan 3.5.3 program. Results: As a result of meta-analysis, therapeutic horseback riding total effect size is 0.552 for children with developmental disabilities and neural patients. And effect size result of according to assessment type variable first, balance effect size is 0.594. Second, muscle activities effect size is 0.425. Third, ADL effect size is 0.430. Fourth, equivalance effect size is 0.640. Fifth, GMFM effect size is 0.482. Sixth, gait effect size is 0.400 and seventh emotion effect size is 0.876. Conclusion: These findings is horseback riding is effective The effect size by outcome was observed to be the effective for children with developmental disabilities and neural patients. and also the horseback riding provided the positive effects of balance, muscle activities, ADL, equivalance, GMFM, gait, emotion for children with developmental disabilities and neural patients. It is hoped that this study will contribute to the development of effective treatments for children with developmental disabilities and neural patients therapeutic horseback riding and the development of study.