• 한국IT서비스학회지
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• 제16권4호
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• pp.15-31
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• 2017

This study analyzes 45 Korea IT service companies from 2012 to 2016 using DEA analysis. Large enterprises, medium enterprises and small and medium enterprises (SMEs). CCR model and BCC model were used for efficiency analysis. Among the various analytical objects, the decision objects which yield the maximum output with minimum input are compared with other analysis objects. The relative inefficiency was measured through this, and Technical Efficiency (TE), Pure Technology Efficiency (PTE), Scale Efficiency (SE), scale profit, reference frequency were analyzed. Also, we analyzed the Technology Gap Ratio (TGR), which is the distance between production function and Meta-Frontier for each firm, using Meta-Frontier analysis. Finally, the Tobit model is used to analyze the sources of efficiency and inefficiency. The inputs are assets, capital, and employees, and the output factor is sales. The analysis shows that large firms are achieving technological achievements more efficiently than small and medium enterprises. As a result, medium-sized enterprises and SMEs can improve efficiency overall through efficient operation of workforce and appropriate combination of inputs such as assets and capital. Also, as a result of the influence factor analysis, it was found that the ratio of the managed asset ratio and the management cost ratio were significant factors influencing the efficiency of the IT service companies. This study suggests the efficiency analysis using DEA for many Korea IT service companies. Inefficient parts of each company are classified according to size and technology. Also, we identify the most efficient companies and analyze the causes of those companies whose profits are lower than their size.

• 디지털융복합연구
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• 제15권12호
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• pp.25-33
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• 2017

이 연구에서는 교육현장, 상담 현장에서 실시되고 있는 정서지능 향상 프로그램의 효과에 대한 융합적 연구로서, 메타분석을 실시하였다. 메타분석은 통계적인 방법을 활용하여 선행연구물들에 대한 종합적인 결과와 프로그램 개입의 크기와 방향을 제시한다는 장점을 가지고 있는 분석방법이다. 논문의 선정기준을 통해 총 33편의 연구물을 분석 대상으로 선정하였다. 선정된 33편의 연구물에서 92개의 효과크기를 종합하여 분석한 결과 정서지능 향상 프로그램의 전체 효과크기는 0.839로 나타났다. 정서지능의 하위 범주 영역에 따른 결과를 비교한 결과, 정서인식 영역의 효과크기가 가장 큰 것으로 나타냈다(g=.919). 다음으로는 정서이입 영역(g=0.841), 정서활용 영역(g=0.834), 정서조절 영역(g=0.785), 정서표현 영역(g=0.766)순으로 효과크기를 보고하였다. 참가자의 연령에 따른 효과크기를 비교한 결과 대학생 및 성인, 초등학생, 중 고등학생, 순으로 효과크기가 나타났다. 이러한 연구 결과를 바탕으로 후속연구와 향후 프로그램 운영에 대한 시사점을 논의하였다.

• 한국간호교육학회지
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• 제26권3호
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• pp.213-224
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• 2020

Purpose: This study considers the variables related to self-leadership of Korean nursing students and verifies the results of precedent studies through meta-analysis. Methods: This study selected a total of 48 precedent studies regarding the investigation of the correlation between variables related to self-leadership of nursing students conducted between 2009 and 2019 and carried out a meta-analysis. Results: For the effect size of variables related to self-leadership of nursing students, individual characteristics had a medium effect size (ESr=.49) and the effect size was larger for meta-cognition (ESr=.65), emotional intelligence (ESr=.58), and self-efficacy (ESr=.54). The characteristics of nursing competency (ESr=.45) also had a medium effect size and the effect size was larger for professional self-concept (ESr=.60), social support (ESr=.58), and critical thinking (ESr=.56). This result shows that individual characteristics were highly correlated with self-leadership compared to the characteristics of nursing competency. Conclusion: This study is significant in that it verified the effect of variables related to self-leadership and presented the direction and preliminary data for a follow-up study. It is necessary to include variables considering individual characteristics in the development of an educational program for improving self-leadership in the future.

• 한국간호교육학회지
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• 제26권3호
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• pp.225-237
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• 2020

Purpose: The purpose of this study was to systematically review and conduct meta-analysis on factors affecting career preparation behavior of Korean nursing students. Methods: Related articles published in Korean and English were collected based on search terms and converted into a numerical database. Data extraction, quality assessment and analysis including a systematic review and meta-analysis were completed. Results: The review included 27 studies. There were 25 factors influencing career preparation behavior of Korean nursing students. Factors were categorized into four sub-factors: personal, contextual, cognitive-emotional, and goal-related. In the meta-analysis of 27 articles the total effect size (ESr) was .34. The effect sizes of the four sub-factors were .37 for individual factors, .25 for situation factors, .34 for cognitive and emotional factors, and .41 for target factors. The main factors were .53 for career-related efficacy, .43 for self-leadership, and .43 for career decision level. Conclusion: Nursing students with high career-related efficacy and self-leadership are more likely to demonstrate career preparation behavior. Based on these results, educational institutions for nursing students must improve students' self-leadership and career effectiveness through education so that they can set career goals.

• 산업융합연구
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• 제18권5호
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• pp.97-101
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• 2020

이 연구는 초등학생 대상 파이썬 활용 교육의 효과를 메타분석을 통해 분석하기 위해 실시되었다. 연구를 위해 파이썬을 활용하여 교육을 실시한 후 효과에 관해 보고한 선행연구 논문 5편을 선정하여 분석하였다. 설정된 연구문제는 다음과 같다. 전체 효과크기는 무엇인가? 출판 여부, 종속변인 유형 등의 범주형 변인에 따른 효과크기는 무엇인가? 학년, 운영기간 등의 연속형 변인에 따른 효과크기는 무엇인가? 연구 결과로써 파이썬 활용 교육의 전체 효과크기는 중간 효과인 .598로 나타났다. 범주형 변수에 따라, 출판된 연구물의 효과크기가 학위 논문보다, 정의적 영역의 효과크기가 학업성취도, 인지적 영역 보다 효과크기가 큰 것으로 나타났다. 메타회귀분석 결과 교육 운영기간이 길수록, 프로그램 운영시간이 클수록 더 큰 효과가 나타났다. 마지막으로 논의 및 정의적 영역에 대한 질적 탐색, 프로그램 특징을 고려한 운영 등을 중심으로 제언을 제시하였다.

• 한국치위생학회지
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• 제20권3호
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• pp.269-279
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• 2020

Objectives: Previous studies have reported inconsistent findings in the association between dental diagnostic X-ray exposure and thyroid cancer. This study was a meta-analysis of case-control studies evaluating the association between exposure to dental radiation and the thyroid cancer risk. Methods: We searched the PubMed and EMBASE databases to identify studies on dental radiation and thyroid cancer risks that were published up to September 2018. Quality of studies was assessed using the Newcastle-Ottawa scale. A fixed-effects model was used to estimate pooled odds ratios (ORs) and 95% confidence intervals (CIs) using STATA 14.0. Potential publication biases were evaluated using Egger's test and Begg's funnel plot. Results: From the literature search, we included six case-control studies in this meta-analysis. The meta-analysis using the fixed-effects model found that dental X-ray exposure was associated with 2.34 times increased risk for thyroid cancer (OR=2.34, 95% CI=1.79-3.21). There was no heterogeneity in the data (p=0.662, I² =0%). Egger's test showed that there was no publication bias (p=0.532). Conclusions: This meta-analysis confirmed the association of dental X-ray exposure and thyroid cancer risk. The current results underscore the importance of applying safety regulations at dental clinics to protect thyroid glands during dental radiography examinations.

• 한국가족관계학회지
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• 제21권2호
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• pp.3-23
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• 2016

Objectives: The purpose of this study is to conduct a meta-analysis of results of death education program implemented with a wide range of learners from preschoolers to the elderly and use the findings to suggest effect sizes of the intervention program, variables, and measurement tools and activity elements of the variables. Method: Among preceding studies conducted domestically until 2015, 21 studies that meet the meta-analysis criteria were selected and analyzed using CMA(Comprehensive Meta-Analysis 3.0 version). Results: The findings are as follows. The overall average effect size was rather large at 0.997. Reviewing by research subject group, victims of domestic violence indicated the largest effect size(2.381). As for variables, death awareness showed the largest effect size(2.908). In terms of activity elements, the largest effect size for total number of sessions was 16 sessions (4.972), while that for per week sessions was 2 sessions/week (2.327). With effect size for activity hours largest at 30 minutes(5.365) followed by 108 minutes(2.381) and 360 minutes(1.607), it was found that there is no positive relationship between activity time and effect size. In terms of publication type, effect size of academic journal paper was 1.107 while that of thesis or dissertation was 0.894, indicating that academic journal papers are relatively highly effective. Conclusions: The present study is meaningful in that it provides baseline data applicable to program development and implementation by verifying the effectiveness of domestically implemented death education programs and variables relevant to such programs.

• 과학교육연구지
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• 제45권1호
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• pp.11-22
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• 2021

이 연구의 목적은 국제 STEM 교육 분야의 연구 결과를 종합하여 국제 STEM 교육의 주요 이슈를 파악하는 데 있다. 이 연구의 분석 대상 자료는 선정 기준과 전문가 그룹의 검토를 통해 다양한 STEM 교육의 이슈를 반영하고 있는 메타분석 또는 체계적 문헌연구의 결과이다. 총 23개의 연구를 대상으로 질적 메타 분석을 하여 다음과 같은 STEM 교육의 이슈를 선정하였다. 첫째, STEM 교육은 국제적인 교육 동향으로 미국, 캐나다, 호주, 한국, 터키 등 많은 국가에서 연구되고 있다. 둘째, STEM 교육은 학생들의 인지적, 정의적, 심동적, 그리고 진로 영역의 향상에 긍정적으로 기여하고 있다. 셋째, STEM 교육은 다양한 수업 도구와 기술의 사용과 함께 연구되어 왔다. 또한, STEM 교육에 대한 교사의 전문성 신장이 성공적인 STEM 교육의 실현의 주요 요인들 중 하나이다. 그 외에 STEM 교육의 성공적인 실천을 위해 다양성, 평등, 타당하고 신뢰로운 연구 설계 등의 이슈에 대해 논의하였다. 또한 이 연구는 우리나라 융합교육의 방향과 실천 전략을 위한 함의점을 제공할 수 있으며 향후 연구에 대한 제언을 줄 수 있다.

• 한방비만학회지
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• 제22권2호
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• pp.158-166
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• 2022

Objectives: The purpose of this meta-analysis was to evaluate the effects of berberine on non-alcoholic fatty liver disease (NAFLD) through a systematic review and meta-analysis. Methods: We searched seven electronic databases for studies through October 2022. All randomized controlled trials (RTCs) of berberine were included. Data extraction and risk of bias assessments were performed by two independent reviewers. The RevMan 5.4.1 program was used for meta-analysis. Results: A total of 279 relevant studies were identified, and 6 eligible RCTs were included to study the efficacy berberine on NAFLD. The six selected trials are studies on the effect between berberine and conventional treatment combined treatment versus conventional treatment. Liver function tests, blood lipid levels, and blood glucose levels were assessed. Combination treatment with berberine, ursodeoxycholate acid, metformin, and monascus purpureus showed statistically significant improvements in liver function levels, blood lipid levels, and blood glucose levels compared to conventional treatment alone. However, there was no significant efficacy of berberine combination dietary, exercise than control group on NAFLD. The meta-analysis results of examining 4 RCTs comparing the therapeutic efficacy of berberine showed statistically significant improvement in the liver function test, blood lipids levels, blood glucose levels. Conclusions: This study suggests that berberine has positive efficacy on blood lipids, blood glucose liver function, fatty liver condition of NAFLD. However, the level of evidence is low because of small effect size,so further investigation is needed.

• 한국전자통신학회논문지
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• 제18권2호
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• pp.305-312
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• 2023

다양한 교육 분야에 기억법을 도입함에 있어서 모바일 환경에서 동작하는 프로그램은 접근성을 높이고 교육의 효과를 높이는 목적으로 활용할 수 있다. 의미가 부여된 단어를 기억하는 것은 연도와 같은 숫자 정보를 기억하는 일에 비하면 훨씬 쉽다. 교육적 효과를 높이고자 하는 입장에서 어플리케이션의 도움을 받아 보완되어야 할 부분이라 생각되는 부분은 수치 정보라 할 수 있다. 기존의 수치 기억법과 연관된 대부분의 연구는 숫자를 이미지화해 기억에 도움을 주는 형태에 초점이 맞춰져 있다. 모바일 환경에서 기억법 기반 메타레코드 알고리즘 논문에서는 이전 연구에서 개발한 어플리케이션은 입력한 수치 정보에 대해 사용자가 실수할 수 있는 부분을 발견하고 단순 수정하는 방법에 그쳐 이를 보완하고자 한다. 본 연구에서는 개인화된 로그 정보를 기반으로 메타데이터를 구성하여 실수를 수정함으로써 기억률을 높이고자 한다. 이를 위해 모바일 환경에 적합한 어플리케이션을 개발하고 메타레코드 데이터의 구조를 제안하고 메타레코드 적용 알고리즘을 구현하고 평가한다.