• Title/Summary/Keyword: Effectiveness

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Bayesian Statistical Modeling of System Energy Saving Effectiveness for MAC Protocols of Wireless Sensor Networks: The Case of Non-Informative Prior Knowledge

  • Kim, Myong-Hee;Park, Man-Gon
    • Journal of Korea Multimedia Society
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    • v.13 no.6
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    • pp.890-900
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    • 2010
  • The Bayesian networks methods provide an efficient tool for performing information fusion and decision making under conditions of uncertainty. This paper proposes Bayes estimators for the system effectiveness in energy saving of the wireless sensor networks by use of the Bayesian method under the non-informative prior knowledge about means of active and sleep times based on time frames of sensor nodes in a wireless sensor network. And then, we conduct a case study on some Bayesian estimation models for the system energy saving effectiveness of a wireless sensor network, and evaluate and compare the performance of proposed Bayesian estimates of the system effectiveness in energy saving of the wireless sensor network. In the case study, we have recognized that the proposed Bayesian system energy saving effectiveness estimators are excellent to adapt in evaluation of energy efficiency using non-informative prior knowledge from previous experience with robustness according to given values of parameters.

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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A Study on Relationship between CEO′s Entrepreneurship in Venture Business and Organizational Effectiveness. - Focused on Innovativeness, Risk-taking and Proactiveness- (벤처기업 CEO의 기업가정신과 조직유효성의 관계에 관한 연구 -혁신성, 위험감수성, 진취성을 중심으로-)

  • Park David S.;Kim Yeon Jeong
    • Journal of Korea Technology Innovation Society
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    • v.7 no.3
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    • pp.479-505
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    • 2004
  • The purpose of this study is to investigate between CEO's Entrepreneurship in Venture Business and Organizational Effectiveness. CEO's Entrepreneurship variable consist of Innovativeness, Risk-taking and Proactiveness. Organizational effectiveness concept composed of system approach and the contingency theory and it's variable consisted of job satisfaction and organizational commitment. Statistical methods are adapted Frequency, Factor Analysis and CFA(Confirmatory Factor Analysis) of LISREL.8 program. Refined Survey data are 412/Major findings are as follows; Only Proactiveness variable of CEO's entrepreneurship have significant relation to Organizational Effectiveness(job satisfaction and organizational involvement). Innovativeness and Risk taking variables are partially supported to influence to Organizational Effectiveness.

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Study on the Effectiveness Analysis Method for the Fixed Linear Arrays System (고정형 선배열 음탐기 체계를 위한 효과도 분석 기법 연구)

  • Kim Jeong-Hoon
    • Journal of the Korea Institute of Military Science and Technology
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    • v.7 no.2
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    • pp.32-40
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    • 2004
  • In this paper, a simulation model for FLAS(Fixed Linear Arrays System) is presented and methods for effectiveness analysis are studied to analyze the valid target detection effectiveness of this system. The simulation model is constructed taking the FLAS operational specification into account, and thus the change in system specification is effectively reflected on the simulation results. The computational burden is reduced by using the pre-processed simulation parameters which are calculated from the real environmental database. Also, the cell effectiveness and TMOE(Total Measurement of Effectiveness) are computed. The target detection effectiveness of FLAS can be simulated under the multiple target interference simulation. It is shown that the presented algorithm is suitable for the underwater system which needs the simulation model for the optimum system design.

A Study on the Analysis of Combat Effectiveness of the Army C2A System (육군 방공자동화체계 전투효과 분석에 관한 연구)

  • Choi Woo-Chan;Lee Jea-Young
    • Journal of the military operations research society of Korea
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    • v.30 no.2
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    • pp.63-80
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    • 2004
  • This paper develops a methodology which can be used to quantify the combat effectiveness of the army C2A system by modifying C2 theory and using Air Defense Engagement Simulation. In this paper, by using Schutzer's C2 theory and Measures of Effectiveness, we modified the MOE formula he designed. Because the combat effectiveness by enhancement of C2(Command and Control) system will increase combat power of individual asset independently. In addition, we developed simulation analysis of air defense scenario by using Air Defense Engagement Simulation. The results show that modified the MOE formula is proper as compared with Air Defense Engagement Simulation method. The combat effectiveness can be obtained as a result of improved probability of detection and information accuracy through real-time information sharing and coordination by C2A system.

A Study on the Impact of Organization Justice, and Organizational Effectiveness (공정성이 조직효과성에 미치는 영향에 관한 실증 연구)

  • Cho Kook-Haeng
    • Management & Information Systems Review
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    • v.15
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    • pp.71-90
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    • 2004
  • This study has uncovered some important relationships among employees perceptions of distributive justice and procedural justice and organizational effectiveness. The present study attempts, first, to identify the perceived justice in promotion and transfer, performance evaluation, pay raise, job allocation and job fire. Second, to determine the relative importance of distributive justice and procedural justice. relationships of organizational effectiveness. The research is the identification of a modest but significant relationship between the two justice and organizational effectiveness. The result make it clear that employee find that right personnel management of fairness. To summarize the result of three variables's relationship influence is as below. The results indicated that perceptions of procedural justice as much organizational effectiveness than do perceptions of distributive justice. As also predicted, the perception of distributive justice did not impact organizational effectiveness. Therefore, Partially supporting the hypothesis. The research implications of these study suggest that great causality should be this paper' research model in three variables. The result indicate that manager must pay attention to employees perceptions of procedural justice and distributive justice.

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An Empirical Study on the Effectiveness of ISO 9000/14000-Registered Companies in Korea (ISO 9000/14000 인증효과에 대한 실증적 연구)

  • Lee, Gun-Hee
    • Journal of the Korean Society for Quality Management
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    • v.34 no.2
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    • pp.98-106
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    • 2006
  • ISO 9000/14000 certification is increasingly becoming 'a passport for business' in the marketplace. However, its effectiveness of both internal and external performance is highly controversial. In this study, empirical research is performed to identify the main objectives and expectation of ISO 9000/14000 and evaluate the effectiveness of certification. Our empirical results show that there are big differences between small and medium companies and large companies for the effectiveness of ISO 9000/14000. Especially, ISO 14000 certification provides very low effectiveness for the small and medium companies in Korea.

Mission Effectiveness Model for Replenishment Ships (해상보급감정의 임무효과모형)

  • 신현주;하석태
    • Journal of the military operations research society of Korea
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    • v.22 no.1
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    • pp.97-113
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    • 1996
  • Mission effectiveness may be defined as a probability that a system can successfully meet an intended mission demand within a given time when operated under specified conditions. This study deals with the Mission effectiveness of a replenishment ships that is performing several types of missions. The essential attributes and their related factors affecting the replenishment missions are established, and then, a mathematical mission effectiveness model is constructed with a replenishment mission characteristics for a basis. Mission effectiveness for a mission is determined by finding the joint probability measure of the following three attributes : operational readiness of the replenishment ships at the start of a mission ; mission reliability of the replenishment ships ; capability of successfully accomplishing intended objectives given an environmental condition. The model is solved analytically. Operational readiness of the replenishment ships in found by the assumed data. Mission reliability and capability are calculated based on the assumed probability distributions. The model would be a useful tool to evaluate mission effectiveness as it is very a replenishment ships.

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A Study on Percepted Education Effectiveness of Simulator System in the Army Training Education (육군 훈련교육에서 시뮬레이터 시스템의 지각된 교육효과에 관한 연구)

  • Lee, Yeong-Jae;Kim, Ho-Jin
    • The Transactions of the Korea Information Processing Society
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    • v.7 no.5
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    • pp.1456-1463
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    • 2000
  • The main objective of this study is to show how to measure the education effectiveness of simulator system in the army. We investigate the education effectiveness through the measuring model that consists of three dimensions such as understanding, experience, and learning. The results of empirical analysis demonstrate that the education effectiveness depends on three dimensions. The result also suggests that the higher the degree of each dimension is, the higher the education effectiveness. However, there is no education effectiveness difference between the traditional training and the simulator training because of the elementary level of simulator function.

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A Survey of Teaching Effectiveness and the Development of an Evaluation Instrument for Clinical Education (임상실습지도자의 효율성 조사와 임상평가도구 개발)

  • Kwon, Mi-Ji
    • The Journal of Korean Physical Therapy
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    • v.14 no.1
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    • pp.177-186
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    • 2002
  • The purpose of this study was to contribute to the development of clinical instruction by students ratings of teaching effectiveness in clinical education. The instrument used in this study was teaching effectiveness of clinical nursing by Yu and modified evaluation method by Kern and Mickelson. The results were are follows 1. Among the 12 categorial components of clinical teaching effectiveness, the highest satisfaction was 'encouraging to think for themselves' and the lowest was 'attitude of teacher and evaluation' 2. To compare teaching effectiveness between sex, 'resource for student' and 'professional competence' showed statistical significance. 3. To compare teaching effectiveness among clinical practice stage, 'encouraging' 'role model', 'professional competence', 'organization of subject mater' and 'attitude of teacher and evaluation' showed statistical significance. 5. Interrater ICCs for evaluation method did not showed statistical significance and interitem ICCs showed statistical significance. This article presents goal of clinical education, development of clinical instructor's educational program and a standardized method to measure clinical performance.

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