• 제목/요약/키워드: IS Effectiveness

검색결과 22,992건 처리시간 0.056초

벤처기업의 창업자특성과 역량, 기업전략이 조직유효성에 미치는 영향에 관한 연구 (The Affects of Characteristics of CEO, Competence on Corporate Strategy and Organizational effectiveness in Venture Companies)

  • 이상백;양해술
    • 디지털융복합연구
    • /
    • 제11권12호
    • /
    • pp.145-154
    • /
    • 2013
  • 본 연구에서는 벤처기업의 조직유효성으로 직무몰입, 조직몰입, 이직의도로 구성하고 선행요인으로 창업자특성, 기업역량특성, 전략특성으로 설정하고 규명하기 위해 벤처기업을 대상으로 실증분석하여 그 결과를 바탕으로 정책적 시사점을 제시하였다. 연구대상지역은 수도권 및 비수도권 총 301명을 대상으로 설문조사를 실시하였다. 연구결과 창업자의 심리적 특성, 역량특성, 기업역량 등이 조직유효성 하위요소로 구성한 직무몰입, 조직몰입, 이직의도에 유의한 영향을 미치는 것으로 분석되었으며, 전략특성 역시 창업자 및 기업역량과 조직유효성과의 관계에 긍정적인 매개효과가 있는 것으로 조사되었다.

애니로직 시뮬레이션을 이용한 무인지상차량 운용성능과 전투효과의 연관성 분석 (Interrelation Analysis of UGV Operational Capability and Combat Effectiveness using AnyLogic Simulation)

  • 이재영;신선우;김준수;배성민;김종만
    • 한국신뢰성학회지:신뢰성응용연구
    • /
    • 제15권2호
    • /
    • pp.131-138
    • /
    • 2015
  • In modern warfare, the number of unmanned systems grow faster than any other weapon systems. Therefore, it is very important to predict and measure the combat effectiveness (CE) of unmanned weapon systems in battlefield for deciding defense budget to acquire those systems. In general, quantitative calculation of weapon effectiveness under complicated battlefield is difficult based on the future network centric warfare. Hence, many papers studied how to measure the combat effectiveness and tried to study a lot of related issues about it. However, there are few papers dealing with the relationship between the UGV (Unmanned Ground Vehicle)'s performance and CE in a ground battlefield. In this paper, we do the sensitivity analysis based on a given scenario in a small unit battle. In order to do that, we developed simulation model using AnyLogic and changed the input parameters such as detection and hitting probabilities. We also assess the simulation outputs according to the variation of input parameters. The MOE used in this simulation model output is survival ratio for Blue force. We hope that this paper will be useful to find which input variable is more effective to increase combat effectiveness in a small unit ground battlefield.

Have we Comprehensively Evaluated the Effectiveness of Endoscopic Screening for Gastric Cancer?

  • Hamashima, Chisato
    • Asian Pacific Journal of Cancer Prevention
    • /
    • 제16권8호
    • /
    • pp.3591-3592
    • /
    • 2015
  • Endoscopy has been increasingly used in clinical practice and as a standardized examination procedure for gastrointestinal diseases. However, only a few studies on endoscopic screening for evaluating mortality reduction from gastric cancer have been carried out. Even if a high detection rate is obtained in clinical practice, such a rate cannot be directly accepted as evidence providing the effectiveness of cancer screening. Endoscopic screening for gastric cancer is not an exception of possibility to detect overdiagnosis. If detection rate is used for the evaluation of the effectiveness of cancer screening, the possibility of overestimating the effectiveness of cancer screening cannot be ruled out. To avoid the effect of overdiagnosis and confirm the effectiveness of endoscopic screening, mortality reduction from gastric cancer must be carefully evaluated by conducting reliable studies. The burden of gastric cancer remains real and this cannot be ignored in Eastern Asian countries. To determine the best available method for gastric cancer screening, evaluation of its effectiveness is a must. Endoscopic screening for gastric cancer has shown promising results, and thus deserves further comprehensive evaluation to reliably confirm its effectiveness and how its optimal use can be strategically promoted.

The Impact of Board Activity on The Audit Committee's Effectiveness Score: Empirical Evidence from Saudi Arabia

  • ALJAAIDI, Khaled Salmen;BAGAIS, Omer Ali;ADOW, Anass Hamad Elneel
    • The Journal of Asian Finance, Economics and Business
    • /
    • 제8권1호
    • /
    • pp.179-185
    • /
    • 2021
  • The aim of this study is to examine the impact of board of directors' activity on the audit committee's effectiveness score among manufactured listed companies on Saudi Stock Exchange (Tadawul) for the period 2015-2017. The final sample of this study consists of 195 firm-year observations that represent manufactured companies listed on Saudi Stock Exchange (Tadawul) for the years 2015-2017. The data of this study in terms of board of directors' meetings, audit committee size and meetings, firm leverage, firm performance, and firm age were hand-collected from the annual reports of the considered companies. The Pooled OLS regression's result indicate that audit committee's effectiveness score is influenced by the board of directors' activity. This result gives support to the agency theory prediction. This result is also consistent with the complementary function of corporate governance mechanisms in which board of directors' activity complements the function of audit committee's effectiveness score. The result of this study should be useful for manufacturing companies, Saudi Stock Exchange, auditors, and regulators which relates to the association between board of directors' activity and audit committee's effectiveness score. This study provides a new empirical evidence on the impact of board activity on the audit committee's effectiveness score in an interesting context which is Saudi Arabia.

QUANTIFICATION OF THE EFFECTIVENESS OF VESSEL TRAFFICSERVICES

  • 박진수
    • 한국항해항만학회:학술대회논문집
    • /
    • 한국항해항만학회 1994년도 추계학술발표회
    • /
    • pp.49-58
    • /
    • 1994
  • The methods of estimation of VTS effectivenss are compared and the worldwide literature related to the VTS effectiveness is reviewed. The review suggests three potential approaches ; simulation ; synthesis of expert opinion and statistical analysis of casualties. this study adopted dissimilar approaches to estimate the VTS effectiveness to the earlier studies ; the combination of synthesis of expert opinion and causal analysis of casualty. The VTS effectiveness is derived by multiplying casualty rate reduction factors by the effect level of causal factors. The development of casualty rate reduction factors was based on the questionnaire survey and the evolution of effect levels was based on the causal analysis using functional block diagram. According to these procedures the maximum benefit to be obtained through the introduction of a VTS system was approximately 46 percent overall. The collision reduction rate was estimated to be approximately 50 percent for a VTS system with advanced radar surveillance. And 47 percent of groundings 36 percent of rammings and 21 percent of founderings could be reduced by the introduction of VTS. These figures are more or less the same to the earlier studies. The VTS effectiveness by the different causal factor groups was examined. VTS may reduce about 68 percent of causal factors classified as environmental conditions 40 percent of human factors and 35 percent of technical factors in collision accidents. As a whole 60 percent of environmental factors 41 percent of human factors and 20 percent of technical factors may be prevented by a VTS. The key variable of the effectiveness percentage is the value of weight coefficient $\delta$. Therefore differing values for this input was discussed and the impact that these variations have on the VS effectiveness noted. As the results of sensitivity analysis of VTS effectiveness by $\pm$10 percent the effectiveness is varied approximately three to seven percent by casualty type. And the value is changed roughly four to eight percent by a $\pm$10 percent variation by different sub-areas.

  • PDF

중국인의 지역별 특성에 의한 직무특징, 조직효과성 관계 모델 개발 (Development of Job Characteristics, Organizational Effectiveness Model for Chinese by Province and City)

  • 최성운;백봉기
    • 대한안전경영과학회지
    • /
    • 제5권4호
    • /
    • pp.245-256
    • /
    • 2003
  • Job characteristics have influence on the organizational effectiveness. The job characteristics are the core job dimension and organizational effectiveness. Aptitude and personality also act on job characteristics. In this study, we investigate chinese characters by province and city. The purpose of this study is to develop the job characteristics and organizational effectiveness model for chinese by province and city. Consequently, we suggest to be applied the model to korean finns strategically, which push into China, by view of improvement of organizational effectiveness and adaptation in China.

Internal Control Effectiveness and Business Survival: Evidence from Thai Food Businesses

  • PHORNLAPHATRACHAKORN, Kornchai;NA KALASINDHU, Khajit
    • The Journal of Asian Finance, Economics and Business
    • /
    • 제7권12호
    • /
    • pp.927-939
    • /
    • 2020
  • This study aims at investigating the effects of internal control effectiveness on business survival of food businesses in Thailand through the mediators of productivity improvement and value creation. In this study, 155 food businesses in Thailand are the samples of the study. The results show that internal control effectiveness has a significant influence on productivity improvement and business survival. Productivity improvement critically affects value creation and business survival while value creation is an important determinant of business survival. However, internal control effectiveness has no relationship with value creation. Also, productivity improvement explicitly mediates the internal control effectiveness-business survival relationships. In summary, internal control effectiveness can enhance firms' sustainable competitive advantage, superior performance and long-term survival. Firms need to focus on internal control effectiveness through investing their assets and resources and utilizing their abilities, competencies and capabilities in order to continuously develop and improve their appropriate concepts and characteristics in an organization. Better internal control effectiveness definitely leads to more long-term survival. To generalize the research results, future research needs to collect data from other businesses and industries. Increased response rate of the study is important for future research to verify and confirm the research results.

Evaluating the effectiveness of ERS for vessel oil spills using fuzzy evidential reasoning

  • Wang, H.Y.;Ren, J.;Yang, J.Q.;Wang, J.
    • Ocean Systems Engineering
    • /
    • 제5권3호
    • /
    • pp.161-179
    • /
    • 2015
  • An emergency response system (ERS) for vessel oil spills is a complex and dynamic system comprising a number of subsystems and activities. Failures may occur during the emergency response operations, this has negative impacts on the effectiveness of the ERS. Of the classes of problems in analyzing failures, the lack of quantitative data is fundamental. In fact, most of the empirical data collected via questionnaire survey is subjective in nature and is inevitably associated with uncertainties caused by the human being's inability to provide complete judgement. In addition, incomplete information and/or vagueness of the meaning about the failures add difficulties in evaluating the effectiveness of the system. Therefore this paper proposes a framework to evaluate the ERS effectiveness by using the combination of fuzzy reasoning and evidential synthesis approaches. Based on analyzing the procedure of ERS for oil spills, the failures in the system could be identified, using Analytic Hierarchy Process(AHP)to determine the relative weight of identified failures. Fuzzy reasoning combined with evidential synthesis is applied to evaluate the effectiveness of ERS for oil spills under uncertainties last. The proposed method is capable of dealing with uncertainties in data including ignorance and vagueness which traditional methods cannot effectively handle. A case study is used to illustrate the application of the proposed method.

난류유동해석을 통한 환기효율의 수치해석적 연구 (Numerical Analysis of Ventilation Effectiveness using Turbulent Airflow Modeling)

  • 한화택
    • 설비공학논문집
    • /
    • 제4권4호
    • /
    • pp.253-262
    • /
    • 1992
  • A numerical procedure is introduced to calculate local ventilation effectiveness using the definitions of local decay rate and local mean age. A low Reynolds number $k-{\varepsilon}$ model is implemented to calculate steady state turbulent velocity distributions, and a step-down method is used to calculate transient concentration distributions. Simulations are carried out for several different values of air change rates and several different diffuser angles in a two-dimensional model of a half scale office room. The results show that the local ventilation effectiveness within a room could vary significantly from one location to another. The nominal air change rate based on the assumption of complete mixing of room air does not provide the local ventilation effectiveness information. It is numerically proved that the local mean age distribution obtained from the transient calculation is equivalent to the steady state concentration distribution with homogeneously distributed contaminant sources.

  • PDF

슬라이딩 모드 제어기를 이용한 수중운동체 엑추에이터 고장진단 및 대처 (Actuator Failure Diagnosis and Accommodation Using Sliding Mode Control for Submersible Vehicle)

  • 양인석;김영진;이동익
    • 제어로봇시스템학회논문지
    • /
    • 제16권7호
    • /
    • pp.661-667
    • /
    • 2010
  • This paper presents a failure diagnosis and accommodation strategy which is capable of tolerating faulty actuators of a submersible vehicle. The proposed method is mainly based on a sliding mode control technique. The primary ideas include a performance index to describe the effectiveness of actuators, and a controller reconfiguration strategy using the actuator effectiveness index. The actuator effectiveness proposed in this work is defined as the relationship between the sliding surface and the controlled system behavior. The resulting actuator effectiveness is then used in reconfiguring the controller in order to counteract for the deteriorated control performance in the presence of a faulty actuator. The effectiveness of the proposed method is demonstrated by means of numerical simulations with a submersible vehicle.