• 한국정보통신학회논문지
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• 제13권3호
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• pp.586-593
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• 2009

분산 환경에서 대부분 데이터 구성은 계층적 분류에 따른 트리 형태로 이루어져 연관성 검색에 제한이 있다. 이러한 데이터들 중 데이터베이스로 저장된 데이터는 통합의 문제와 효율적 검색이라는 문제가 있다. 이에 따라 본 시스템에서는 분산된 데이터 베이스 통합을 위해 XMDR을 이용하고 계층적으로 표현된 지식의 검색 효율성을 위해서 XMDR에 토픽맵을 연계하는 방안을 제안한다. XMDR은 메타시멘틱온톨로지, 인스턴스시멘틱온톨로지 그리고 메타로케이션으로 구성하고, 분산된 관계데이터베이스 사이의 데이터 이질적 문제와 메타데이터 이질적 문제를 해결하여 통합하고, 메타시멘틱온톨로지와 인스턴스시멘틱온톨로지를 토픽 맵과 연결하여, 토픽 맵의 자원위치를 표현하는 어커런스 역할을 XMDR의 메타로케이션이 수행하게 함으로써 효율적인 통합 검색을 위한 방안을 제안한다.

• 한국콘텐츠학회논문지
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• 제9권12호
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• pp.572-581
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• 2009

XMI 메타모델과 XML 메타데이터를 이용한 클래스에 대한 연구는 일반적으로 이용되고 있는 XML 메타데이터의 생성과 상당한 차이점이 있다. 대부분의 XML 시스템은 에디터기능과 데이터베이스 연동, 등 마크업언어의 생성부분에 많은 비중을 두고 개발하고 있다. 그러나 본 연구는 이와 달리 XMI 메타모델에서 추출되는 클래스 메타데이터의 마크업언어를 생성하는데 중점을 두었다. 또한 클래스내의 단위 엘리먼트의 속성부여와 모델내의 클래스 관계를 표현할 수 있도록 하였다. 마크업언어의 생성에서는 XML 스키마를 이용하여 세부적인 데이터타입의 선언이 가능하도록 하고 있다.

• 대한산업공학회지
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• 제34권3호
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• pp.344-354
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• 2008

The ITA meta-model descriptions being promoted by Korean government was developed to build information technology architecture for applications in public institutions. However, the application of this ITA meta-model is not easy because of the complexity and overlapping between classes and attributes which reside in the ITA meta-models. Additionally, the National Defense Architecture is planned for development using the MND-AF. Since the National Defense Architecture must align with the Government ITA for interoperability and consistency, it is crucial the differences in the meta-models between MND-AF and Government ITA must be resolved. This study presents the trade-off results between the meta-models of MND-AF and Government ITA. It also proposes a set of tailored meta-models for use with the National Defense architecture development. The tailored meta-models use an ERA (Element, Relationship, Attribute) data structure that decreases complexity and eliminates the overlapping between classes and attributes.

• 대한간호학회지
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• 제52권4호
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• pp.363-377
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• 2022

Purpose: This study aimed to test a hypothetical model of Korean nurses' patient safety management activities using meta-analytic path analysis. Methods: A systematic review, meta-analysis, and meta-analytic path analysis were conducted following the PRISMA and MOOSE guidelines. Seventy-four studies for the meta-analysis and 92 for the meta-analytic path analysis were included. The R software program (Version 3.6.3) was used for data analysis. Results: Four variables out of 49 relevant variables were selected in the meta-analysis. These four variables showed large effect sizes (ESr = .54) or median effect sizes (ESr = .33~.40) with the highest k (number of studies) in the individual, job, and organizational categories. The hypothetical model for the meta-analytic path analysis was established using these variables and patient safety management activities. Twelve hypothetical paths were set and tested. Finally, the perception of the importance of patient safety management and patient safety competency directly affected patient safety management activities. In addition, self-efficacy, the perception of the importance of patient safety management, patient safety competency, and patient safety culture, indirectly affected patient safety management activities. Conclusion: Self-efficacy, the perception of the importance of patient safety management, patient safety competency, and the organization's patient safety culture should be enhanced to improve nurses' patient safety management activities.

• 한국정보통신학회논문지
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• 제12권8호
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• pp.1463-1472
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• 2008

본 논문에서는 XMDR(eXtended Meta-Data Resistry) 데이터 허브 기반의 Proxy Database를 이용하여 Legacy Database간의 데이터 상호운용이 가능한 프레임워크를 제안한다. 협 업 환경에서는 Legacy Database간의 상호운용을 하는데 있어서 데이터의 구조, 의미, 형식상의 이질적인 문제들이 발생한다. 또한 실시간으로 변화하는 데이터를 종류와 형식에 관계없이 지속적으로 일관성을 유지하기가 어렵다. 본 논문에서는 XMDR 데이터 허브를 이용하여 Legacy DB간의 데이터 통합 및 상호운용에서 발생할 수 있는 이 질적인 문제를 해결한다. Proxy Database를 이용하여 상호운용하고자 하는 데이터들이 종류와 형식에 상관없이 호환이 가능하고, 지속적으로 정확한 정보를 실시간으로 일관성 있게 제공하는 프레임워크를 제안한다.

• 대한통합의학회지
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• 제9권1호
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• pp.203-217
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• 2021

Purpose: The purpose of this meta-analysis was to examine the high-level evidence of the effects of manual therapy on musculoskeletal diseases. Methods: Domestic databases were searched for studies that conducted clinical trials associated with manual therapy on chronic musculoskeletal diseases. A total of 591 studies published between 2005 and 2018 were identified, with 18 studies satisfying the inclusion data. The studies were classified according to patient, intervention, comparison, and outcome (PICO). The search outcomes were items associated with pain and physical function. The 18 studies included in the study were evaluated by using the R meta-analysis (version 4.0). The quality of 18 randomized control trials was evaluated by using the Cochrane risk of bias (ROB). The effect sizes were computed as the corrected standardized mean difference (SMD). Subgroup and meta-regression analyses were also used. Egger's regression test was carried out in order to analyze the publication bias. Cumulative meta-analysis and sensitivity analysis were also conducted in order to analyze the data error. Results: The following factors showed the large effect size of manual therapy on chronic musculoskeletal diseases: pain (Hedges's g = 2.66; 95% CI = 1.47 ~ 3.85), and physical function (Hedges's g = 2.15; 95% CI: 1.22 ~ 3.08). The subgroup analysis only showed a statistical difference in the type of manual therapy (pain) and outcome (physical function). No statistically significant difference was found in the meta-regression analysis. Publication bias was found in the data, but the results of the trim-and-fill method showed that such bias did not largely affect the obtained data. Furthermore, there were no data errors in the cumulative meta-analysis and sensitivity analysis. Conclusion: This study provides evidence for the effectiveness of manual therapy on chronic musculoskeletal diseases in pain and physical function. Subgroup analysis suggests that only the type of manual therapy for pain and the type of outcome for physical function differed in effect size.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 1999년도 춘계공동학술대회-지식경영과 지식공학
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• pp.161-171
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• 1999

Query language has been widely used as a convenient tool to obtain information from a database. However, users demand more intelligent query processing systems that can understand the intent of an imprecise query and provide additional useful information as well as exact answers. This paper introduces a meta-database and presents a query processing mechanism that supports a variety of intelligent queries in a consistent and integrated way. The meta-database extracts data abstraction knowledge form an underlying database on the basis of a multilevel knowledge representation framework KAH. In cooperation with the underlying database, the meta-database supports four types of intelligent queries that provide approximately or conceptually equal answers as well as exact ones.

• Journal of information and communication convergence engineering
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• 제6권4호
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• pp.470-474
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• 2008

A well-designed computer network technology produces benefits on several fields within the organization, between the organizations(suborganizations) or among different organizations(suborganizations). Network technology streamlines business processes, decision process. Graphs are useful data structures capable of efficiently representing a variety of networks in the various fields. Metagraph is a like graph theoretic construct introduced recently by Basu and Blanning in which there is set to set mapping in place of node to node as in a conventional graph structure. Metagraph is thus a new type of data structure occupying its popularity among the computer scientists very fast. Every graph is special case of Metagraph. In this paper the authors introduce the notion of Meta-Networking as a new network technological representation, which is having all the capabilities of crisp network as well as few additional capabilities. It is expected that the notion of meta-networking will have huge applications in due course. This paper will play the role of introducing this new concept to the network technologists and scientists.

• 응용통계연구
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• 제21권6호
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• pp.1007-1014
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• 2008

Usability evaluation(UE) experiments are conducted to provide UE practitioners with guidelines for better outcomes. In UE research, significant quantities of empirical results have been accumulated in the past decades. While those results have been anticipated to integrate for producing generalized guidelines, traditional meta-analysis has limitations to combine UE empirical results that often show considerable heterogeneity. In this study, a new data mining method called weighted bi-clustering(WBC) was proposed to partition heterogeneous studies into homogeneous subsets. We applied the WBC to UE empirical results and identified two homogeneous subsets, each of which can be meta-analyzed. In addition, interactions between experimental conditions and UE methods were hypothesized based on the resulting partition and some interactions were confirmed via statistical tests.

• 자연과학논문집
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• 제8권1호
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• pp.109-114
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• 1995

통계 데이타베이스의 효율적 이용을 위해 통계 분석을 위한 요약 정보를 미리 계산하여 저장함으로써 사용자에게 빠른 응답시간내에 통계 정보를 제공하려는 요약 데이타베이스와 이의 효율적인 관리와 사용의 편리를 위한 메타 데이타베이스가 생성되고 관리되어야만 한다. 요약 데이타베이스를 효율적으로 이용한 통계 분석 작업의 환경과 사용자의 편이성을 지원하기 위하여 계층 구조 형태인 데이타 사전/디렉토리의 형태로 독립적으로 운영되는 메타 데이타베이스와 관리기의 설계 및 구현 작업과 이를 이용한 운영 방법 등이 제시되었다.