• 대한소아치과학회지
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• 제33권4호
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• pp.728-737
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• 2006

연구 목적은 근거중심 소아치과학 연구의 기본이 되는 체계적 고찰의 방법과, 체계적 고찰의 통계적 방법이 되는 메타분석에 대하여 소개하는 것이었다. 연구 자료로서 Cochrane Handbook for Systematic Reviews of Interventions 등을 참고하였다. 체계적 고찰의 첫 단계이자 가장 중요한 것은 잘 규정된, 초점이 또렷한 질문을 만드는 것이고, 다음에 자료의 검색을 하고 선정된 자료에 대한 타당도 평가를 한 후, 변수의 종류에 따라 자료를 분석하고 결과를 해석하여 결론을 도출한다. 자료 분석의 통계학적 방법인 메타분석의 필요성과 원리 및 변수의 종류에 따른 자료별 메타분석 방법에 대하여 요약 기술하였다.

• Korean Journal of Radiology
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• 제21권12호
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• pp.1345-1354
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• 2020

Objective: To evaluate radiomics analysis in studies on mild cognitive impairment (MCI) and Alzheimer's disease (AD) using a radiomics quality score (RQS) system to establish a roadmap for further improvement in clinical use. Materials and Methods: PubMed MEDLINE and EMBASE were searched using the terms 'cognitive impairment' or 'Alzheimer' or 'dementia' and 'radiomic' or 'texture' or 'radiogenomic' for articles published until March 2020. From 258 articles, 26 relevant original research articles were selected. Two neuroradiologists assessed the quality of the methodology according to the RQS. Adherence rates for the following six key domains were evaluated: image protocol and reproducibility, feature reduction and validation, biologic/clinical utility, performance index, high level of evidence, and open science. Results: The hippocampus was the most frequently analyzed (46.2%) anatomical structure. Of the 26 studies, 16 (61.5%) used an open source database (14 from Alzheimer's Disease Neuroimaging Initiative and 2 from Open Access Series of Imaging Studies). The mean RQS was 3.6 out of 36 (9.9%), and the basic adherence rate was 27.6%. Only one study (3.8%) performed external validation. The adherence rate was relatively high for reporting the imaging protocol (96.2%), multiple segmentation (76.9%), discrimination statistics (69.2%), and open science and data (65.4%) but low for conducting test-retest analysis (7.7%) and biologic correlation (3.8%). None of the studies stated potential clinical utility, conducted a phantom study, performed cut-off analysis or calibration statistics, was a prospective study, or conducted cost-effectiveness analysis, resulting in a low level of evidence. Conclusion: The quality of radiomics reporting in MCI and AD studies is suboptimal. Validation is necessary using external dataset, and improvements need to be made to feature reproducibility, feature selection, clinical utility, model performance index, and pursuits of a higher level of evidence.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 추계 학술논문 발표대회
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• pp.5-6
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• 2011

Defect dispute has been a continuous claim that concerning a apartment building. However, objective standard of judgment is inadequate to solve defect dispute. Furthermore, it need to scientific evidence that composited standard of judgment. This evidence has a necessary to collect a data for a long time and systematically analyze. Therefore, it need to develop smart information management system, in this study, it review user-oriented condition as swot analysis.

• 한국임상수의학회지
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• 제26권3호
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• pp.189-199
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• 2009

With the growing importance of evidence-based medicine, clinical or biomedical research relies critically on the validity and reliability of data, and the subsequent statistical inferences for medical decision-making may lead to valid conclusion. Despite widespread use of analytical techniques in papers published in the Journal of Veterinary Clinics statistical errors particularly in design of experiments, research methodology or data analysis methods are commonly encountered. These flaws often leading to misinterpretation of the data, thereby, subjected to inappropriate conclusions. This article is the first in a series of nontechnical introduction designed not to systemic review of medical statistics but intended to provide the journal readers with an understanding of common statistical concepts, including data scale, selection of appropriate statistical methods, descriptive statistics, data transformation, confidence interval, the principles of hypothesis testing, sampling distribution, and interpretation of results.

• 임상간호연구
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• 제17권3호
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• pp.307-318
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• 2011

Purpose: This study was to identify topics for evidence-based clinical nursing practice guidelines in Korea. Methods: Data were collected from 330 staff nurses from 10 general hospitals and 53 nurses in charge of nursing education in 110 hospitals with over 500 beds. Using open questions, the nurses identified activities which could not be verified, which lacked consistency among nurses, clinical units and/or hospitals, which were not based on the up-to-date knowledge and which needed reform. The data were analysed by content analysis using a qualitative methodology. Results: Collected data consisted of 1882 clinical topics, which were classified into 50 topics, 207 mid-categories, and 456 sub-categories. The most frequent topics in order of frequency were medications, central line management, intravenous injections, urinary catheterization, perioperative nursing care, skin tests, pressure ulcer care, blood transfusions, laboratory examination-culture, respiratory care which were performed routinely in clinical setting by staff nurses. Conclusion: The research findings indicate the urgent need to develop evidence-based clinical nursing practice guidelines related to these research findings. Further research is needed to identify topics related to health promotion, and symptom/management of health problem.

• 유통과학연구
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• 제13권9호
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• pp.29-36
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• 2015

Purpose - The purpose of this study is to examine the influence of effective role-play and training on employee education satisfaction and customer orientation. Evidence of the suggested objective is obtained by monitoring the effectiveness of hotel service training. Research design, data, and methodology - Data were collected from 280 role-play sessions performed in a Korean Hotel and examined using a frequency analysis, reliability/validity assessments, correlation analysis, and regression analysis using SPSS 19.0. Results - 1) Entrepreneurs and training instructors should enthusiastically apply service education in order to enhance each employee d evaluation in terms of customer satisfaction and customer orientation. 2) The most effective factor on customer satisfaction and orientation is the instructor's qualifications. 3) Since a higher level of education-training satisfaction leads to better customer orientation, effective education-training is essential to achieve this result. Conclusions - The study was able to obtain practical evidence that can confirm that service education-training through role-play positively affects employee customer service orientation. In future advanced research on training effects on customer orientation, various internal factors of a business should also be considered.

• The Journal of Asian Finance, Economics and Business
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• 제8권3호
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• pp.1163-1169
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• 2021

This study aims to obtain empirical evidence regarding the effect of the fraud pentagon theory on financial statement fraud. The novelty of this study is the use of factor analysis to consolidate the five elements of the fraud pentagon into just one factor, which, to the knowledge of the researcher, no one else has done to research the effect of pentagon fraud on financial statement fraud. This study uses both agency theory and fraud pentagon theory. The population of this study consists of state-owned companies listed on the Indonesia Stock Exchange. The research period in this study is from 2014 to 2019. The data used in this study is secondary data obtained from the company's annual financial statements. A purposive sampling technique was used to determine the research sample. The selected companies total 20. Factor analysis and simple linear regression analysis method were used as research the methods. Based on the research results, it was found that the fraud pentagon theory had a positive effect on the financial statement fraud of state-owned companies listed on the Indonesia Stock Exchange. High level of the pentagon fraud on a company leads to a higher indication of financial statement fraud.

• The Journal of Asian Finance, Economics and Business
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• 제9권1호
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• pp.13-24
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• 2022

The main goal of this study is to look at how South Korea can catch up to the rest of the world through policy-driven structural change and manufacturing revolutions. To achieve the objective, this study used annual data on real exports and real GDP from the World Development Indicator WDI of South Korea for the period 1960 to 2019. The study's goal is to use econometrics to detect this policy-driven structural change trend. Multiple nonlinear Granger causality test was used to accomplish this. The findings revealed structural breaks and nonlinearities in the dynamic link between South Korea's real GDP and real exports. Furthermore, results also show evidence of multiple structural breaks in South Korean data. South Korea's economic catch-up was the result of a constant reevaluation of industrial policies, readjustment, and structural change to constantly explore and utilize comparative advantage, realizing economies of scale at the global level, and reallocating and redistribution of resources towards productive sectors with high value-added output, according to econometric analysis. If South Korea would have not done this structural change this miracle to escape the middle-income trap would not have been possible. These findings support the descriptive evidence of structural change in favor of manufacturing revolutions and value addition industry development in South Korea.

• 한국과학교육학회지
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• 제32권2호
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• pp.201-209
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• 2012

본 연구는 예비초등교사들이 과학탐구를 수행하고 이에 대한 과학글쓰기를 분석하여 증거와 이론의 조정의 유형과 특성을 탐색하기 위한 연구이다. 본 연구에서 4개의 과학탐구활동에서 총 115개의 예비초등교사들의 글쓰기가 수집 및 분석되었다. 글쓰기 분석을 바탕으로 4개의 이론과 증거의 조정 유형을 발견할 수 있었다. 본 연구는 다음과 같이 유형을 제안한다. 유형1은 증거와 이론의 일치, 유형2는 증거와 이론의 일치 및 이론의 확장과 정교화, 유형3은 증거와 이론의 불일치, 마지막으로 유형4는 증거와 이론의 불일치 및 조정으로 보았다. 본 연구결과 우선 빈도수를 고려할 때 가장 많은 것에서 적은 것의 순으로 보면 유형1, 유형3, 유형2, 유형4의 순이다. 가장 빈도수가 높은 것으로 유형1이 나왔는데 이는 탐구질문에 내재된 이론이 참여자에 의해 쉽게 파악되었고 이를 지지하는 증거를 발견된 자료 중에서 골라냈다는 것으로 해석된다. 탐구주제와 조정유형의 빈도수 사이에 관련성이 별로 없었으나 예외적으로 활동1은 관련성을 보여주었다. 본연구의 이러한 결과는 학생들이 자신이 이미 가지고 있는 지식을 실험계획, 자료분석 및 해석 그리고 과학주장을 만들어내는 과정에서 잘 융합하고 있다는 점과 연관성이 있다고 보여진다.

• Industrial Engineering and Management Systems
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• 제8권1호
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• pp.47-53
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• 2009

We define product line (or mix) selection problem as selecting a subset of potential product variants that can simultaneously minimize product proliferation and maintain market coverage. Selecting the most efficient product mix is a complex problem, which requires analyses of multiple criteria. This paper proposes a method based on Data Envelopment Analysis (DEA) for product line selection. Data Envelopment Analysis (DEA) is a linear programming based technique commonly used for measuring the relative performance of a group of decision making units with multiple inputs and outputs. Although DEA has been proved to be an effective evaluation tool in many fields, it has not been applied to solve the product line selection problem. In this study, we construct a five-step method that systematically adopts DEA to solve a product line selection problem. We then apply the proposed method to an existing line of staplers to provide quantitative evidence for managers to generate desirable decisions to maximize the company profits while also fulfilling market demands.