• Title/Summary/Keyword: model studies

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A Data Processing Mechanism in Sensor Network Environment (센서 네트워크 환경에서의 데이터 처리 메커니즘)

  • Park, Dae-Hyun;Kim, Young-Jun;Lee, Jeong-Hoom;Chong, Il-Young
    • Proceedings of the IEEK Conference
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    • 2007.07a
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    • pp.133-134
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    • 2007
  • The effective data processing mechanism in the sensor network means data stream model and real-time query processing model for real-time processing of stream data. This mechanism can improve satisfaction of users and reduce delay rate of data processing. In this paper, we explain the problem which is occurred when users need to search certain information among information of stream data and describe reduction model of delay rate according to data transmission.

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Knowledge Driven Architectural Model to Support Smart Emergency Service in Web of Objects Based Iot Environment

  • Fattah, Sheik Mohammad Mostakim;Kibria, Muhammad Golam;Jeong, Kwanghyeon;Chong, Ilyoung
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.40 no.2
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    • pp.408-418
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    • 2015
  • Virtualizing The Physical Devices And Resources As Well As Conceptual Entities Would Form Vos And Cvos, Which Provides Dynamicity And Intelligence Through Composition And Collaboration For Emergency Services In WoO Based Smart Shopping Mall (WSSM). Semantic Ontology In WoO Platform Supports Dynamic Composition And Collaboration Among Objects, VOs And CVOs To Provide Intelligent Services. This Paper Proposes An Architectural Model Of WoO Platform To Support The Smart Emergency Services In Shopping Mall. A Semantic Ontology Model For Wssm, And Information Reusability And Interoperability Among The Vos And Their Functional Models Have Been Presented.

Success Factors of Student Startups in Korea: From Employment Measures to Market Success

  • Ko, Chang-Ryong;An, Jong-In
    • Asian Journal of Innovation and Policy
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    • v.8 no.1
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    • pp.97-121
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    • 2019
  • The Korean government has focused on universities or colleges as the main targets of its startup policy since the 2010s. However, the performance is not so good, with a low survival rate. The purpose of this study is to examine the factors that underpin the success of student startups. First, through a review of the literature, this study compared the success factors of student startups with those of venture startups, which means the general startup sector, as well as youth startups, also a focus of startup policy targeting youngsters outside universities or colleges. Second, we analyzed case studies of startup companies connected University H. The literature review showed that the main target of student startups is the employment of university students. There is a lack of studies on success factors; existing studies only emphasize the entrepreneurship of students. The results of case studies showed several factors of success similar to those of general venture startups: founders, business model and resources including team, and mentoring.

The dog as an exercise science animal model: a review of physiological and hematological effects of exercise conditions

  • Lee, Hae Sung;Kim, Jong-Hee
    • Korean Journal of Exercise Nutrition
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    • v.24 no.4
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    • pp.1-6
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    • 2020
  • [Purpose] Exercise is a fundamental way to maintain and improve health and physical fitness. Many human studies have demonstrated the beneficial effects of exercise on various biological parameters. However, studies investigating the effects of exercise in dogs are limited. This review summarized the current data from studies that examined the effects of different exercise conditions (treadmill vs. non-treadmill and acute vs. chronic) on physiological and hematological parameters in dogs. [Methods] Papers addressing the effects of exercise in dogs published from January 2000 to October 2020 were retrieved from the online databases of Scopus, Google Scholar, and PubMed and were selected and reviewed. [Results] The exercise conditions differentially affected physiological and hematological responses and adaptation in dogs. Therefore, the development and comprehensive evaluation of scientific exercise programs for dogs are necessary. [Conclusion] The dog would be a valuable exercise science animal model, and studies aiming at the optimal health, well-being, and quality of life of dogs need to be conducted.

Development of CITIS Reference Model System on Internet (인터넷 기반 CITIS 참조모델시스템 개발)

  • 주경준;조장혁;박상봉
    • The Journal of Society for e-Business Studies
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    • v.4 no.3
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    • pp.139-158
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    • 1999
  • In this paper we present the development of CITIS(Contractor Integrated Technical Information Service) reference model system which can be utilized for electronic commerce among enterprises. For the physical analysis target model, we selected switching system businesses of Korea Telecom. From analysis of life-cycle business process and data, we derived CITIS reference model containing CITIS To-Be model and CITIS scenario. Derived CITIS reference model is generalized so that it can be used not only for switching system businesses but other business areas regarding CITIS implementation. On the base of the derived CITIS reference model, We also developed CITIS information management system and CITIS-support workflow system as CITIS reference model system. Developed CITIS reference model system supports information and business process sharing among enterprises on internet and it does make a contribution to expansion of CITIS which is moving from conceptual research towards real implementation phase.

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The Methylenetetrahydrofolate Reductase C677T Polymorphism and Breast Cancer Risk in Asian Populations

  • Rai, Vandana
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.14
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    • pp.5853-5860
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    • 2014
  • Background: Methylenetetrahydrofolate (MTHFR) is the key enzyme of the folate metabolic pathway and several studies have pointed to association between the MTHFR C677T polymorphism and breast cancer risk. Although significant association was observed in some studies, in others no clear link could be established. Objective: A meta-analysis of published Asian case control studies was therefor carried out to shed further light on any C677T breast cancer association. Materials and Methods: PubMed, Springer Link, Google Scholar and Elsevier databases were searched for case control studies of associations between MTHFR C677T polymorphism and breast cancer risk. Odds ratios (ORs) with 95% confidence intervals (CIs) were estimated to assess the association. A total of 36 studies including 8,040 cases and 10,008 controls were included in the present meta-analysis. Results: Overall, a significantly elevated breast cancer risk was associated with the T allele and TT genotype in homozygote comparison and dominant genetic models when all studies were pooled into the meta-analysis (T vs C (allele contrast model): OR=1,23, 95%CI=1.13-1.37, p=0.000 ; TT vs CC(homozygote model): OR=1.38, 95%CI=1.16-1.63, p=0.0003; TT+CT vs CC (dominant model): OR=1.12, 95%CI=1.01-1.23, p=0.02). Conclusions: The present meta-analysis strongly suggested a significant association between the MTHFR C677T polymorphism and risk of breast cancer in Asian populations.

Organizational Accountability in Health Care : Developing a Model for Analysis (의료기관의 조직 책무성 : 분석을 위한 모형 개발)

  • Lee, Geun-Chan;You, Myoung-Soon
    • Health Policy and Management
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    • v.21 no.2
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    • pp.213-248
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    • 2011
  • Past studies on organizational accountability have had similar limitations. First, empirical evidence of organizational accountability is rare as the majority of research takes a conceptual approach of the topic. Only a few of these studies are applicable to health care organizations (HCOs). To fill these gaps, we attempted to develop a model for analysis of organizational accountability for HCOs. Accountability for HCOs was conceptualized by two axes: answerability(X, horizontal) and value-creation(Y, vertical). Our concept building could relieve competing accountability mechanism which past studies stressed. Four elements of accountability(legal, economical, social, and clinical) were applied to specify each of the two features of organizational accountability. And then four types of accountability behavior were coordinated by this x-y axis : high A/high VC, high A/low VC, low A/high VC, low A/low VC. Finally, a multidimensional model of HCOs' accountability, enabling an empirically testable multi-level analysis, was proposed.

A Test of Goodness of Fit Between Temperament and Context(II) : Goodness of Fit and Children's Perceived Competence (기질과 환경 간의 조화로운 합치모델 검증연구(II) - 조화로운 합치와 아동의 자기능력지각 -)

  • Choi, Young Hee
    • Korean Journal of Child Studies
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    • v.15 no.1
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    • pp.145-157
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    • 1994
  • This research focused on the examination of a "Goodness of Fit" model with reference to the interaction effects of temperament and context. Two hundred forty 5th graders from urban and rural areas were administered the EAS (Emotionality, Activity, Sociability) and the Perceived Competence scales. The degree of satisfaction of mothers with their children's temperament was assessed for the context measure. Results of hierarchical multiple regression analyses showed that the interaction of children's emotion and mothers' satisfaction with children's emotion explained perceived social competence and general self-worth. This result supported the goodness of fit model. However, interaction effects were not found in children's perception of cognitive and physical competence. Also, children's activity and sociability showed strong main effects on perceived competence. It implies that activity and sociability should be applied to the personological model. The implication of the findings for following studies of goodness of fit model were discussed.

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The Effectiveness of the Learning Cycle Model for Science Instruction : Preschool Children's Creativity and Scientific Problem Solving Ability (순환학습 모형을 활용한 과학 교수법이 유아들의 창의성과 과학적 문제 해결력에 미치는 효과)

  • Chung, Chung Hee;Park, Yune Bae
    • Korean Journal of Child Studies
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    • v.25 no.3
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    • pp.1-14
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    • 2004
  • This study focused on the development and application of learning cycle model for promoting children's creativity and problem solving ability. The learning cycle approach consists of four phases : awareness, exploration, investigation, and concept application. The program consists of 20 scientific activities. A total of 70 children participated the 10 week program to examine the effectiveness of this model. The experimental design included a pretest, treatment, and posttest. Results showed that the experimental group children scored significantly higher on the creativity and problem solving tests in the posttest than the control group children.

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A New Model for Effectiveness Analysis of Government- supported R&D Institutes Evaluation System (정부출연연구기관 기관평가시스템 유효성 분석 모형: 유효성 분석을 위한 새로운 접근방법)

  • 이민형
    • Journal of Technology Innovation
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    • v.13 no.3
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    • pp.175-196
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    • 2005
  • This Paper examines analytic studies of the evaluation system used for evaluating government-supported R&D Institutes (GSRIs), and designs a new model for analyzing the evaluation system's effectiveness. The analytic models in existing studies use the meta evaluation and balanced scorecard (BSC) models. However, theses studies focused on the structure and elements of the evaluation system for examples, the appropriateness of the elements within the evaluation system and the balance of the evaluation index. Accordingly, the effectiveness of the GSRI evaluation system, that is, the evaluation's influence on GSRI performance improvement was not analyzed. This study uses the institution theory and contingency theory perspectives as related to government organization management to develop an analytical model of GSRI evaluation system effectiveness. The new model proposes an analytical approach for improving the effectiveness of the GSRI evaluation system in an institutionalized environment.

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