• 한국시뮬레이션학회논문지
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• 제12권3호
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• pp.69-81
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• 2003

To manage a cluster of distributed server systems, a number of management aspects should be considered in terms of configuration management, fault management, performance management, and user management. System performance monitoring and reporting take an important role for performance and fault management. In this paper, we present distributed system architecture modeling of a performance monitoring and reporting tool. Modeling architecture of four subsystems are introduced: node agent, data collection, performance management & report, and DB schema. The performance-related information collected from distributed servers are categorized into performance counters, event data for system status changes, service quality, and system configuration data. In order to analyze those performance information, we use a number of ways to evaluate data corelation. By using some results from a real site of a company and from simulation of artificial workload, we show the example of performance collection and analysis. Since our report tool detects system fault or node component failure and analyzes performances through resource usage and service quality, we are able to provide information for server load balancing, in short term view, and the cause of system faults and decision for system scale-out and scale-up, in long term view.

• Journal of Information Processing Systems
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• 제7권4호
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• pp.595-612
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• 2011

Most organizations use performance appraisal system to evaluate the effectiveness and efficiency of their employees. In evaluating staff performance, performance appraisal usually involves awarding numerical values or linguistic labels to employees performance. These values and labels are used to represent each staff achievement by reasoning incorporated in the arithmetical or statistical methods. However, the staff performance appraisal may involve judgments which are based on imprecise data especially when a person (the superior) tries to interpret another person's (his/her subordinate) performance. Thus, the scores awarded by the appraiser are only approximations. From fuzzy logic perspective, the performance of the appraisee involves the measurement of his/her ability, competence and skills, which are actually fuzzy concepts that can be captured in fuzzy terms. Accordingly, fuzzy approach can be used to handle these imprecision and uncertainty information. Therefore, the performance appraisal system can be examined using Fuzzy Logic Approach, which is carried out in the study. The study utilized a Cascaded fuzzy inference system to generate the performance qualities of some University non-teaching staff that are based on specific performance appraisal criteria.

• Asia pacific journal of information systems
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• 제31권2호
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• pp.141-184
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• 2021

While a great body of information systems (IS) literature has discussed mobile banking (m-banking) services, most of these studies have focused on the adoption or acceptance phases of this technology; with little attention was given to users' intension to continue using such technology. This paper aims at investigating the most important factors that predict users' continuous intension to use m-banking services in the post-adoption phase. This paper presents a conceptualization and validation of an extended expectation-confirmation model (ECM). A total of 303 Kuwaiti users of m-banking services participated in this study. Partial least squares (PLS) of structure equation modelling (SEM) technique was used to analyze the data. The results mainly showed that users' continuous intension to use m-banking services is significantly influenced by perceived trust, satisfaction, self-efficacy, performance expectancy and effort expectancy. Theoretical and practical contributions as well as the research limitations and future directions are discussed.

• 한국건설관리학회논문집
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• 제11권3호
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• pp.89-96
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• 2010

건설업은 옥외작업이 많기 때문에 날씨에 의한 영향이 매우 크므로, 날씨정보를 활용하고자 하는 노력을 기울여왔다. 하지만 실제로 건축현장에서 날씨정보를 어떻게 활용하고 있는지 현황파악에 대한 연구는 미흡하였다. 따라서 본 연구에서는 건축현장의 날씨정보 활용 현황을 분석하여 날씨정보의 활용성 향상방안을 제시하는 것을 목적으로 한다. 연구결과 현장 실무자들은 날씨정보가 성과향상에 도움이 될 것이라 인식하고 있지만, 날씨정보 활용에 관한 교육은 제대로 받지 못하였다는 것이 파악되었다. 또한 기상정보시스템의 날씨정보가 건축공사에서 활용하기에 적합하지 않아서 실제 업무에서 활용성이 떨어진다는 것이 파악되었다. 따라서 날씨정보 활용성을 향상시키기 위해서는 현장 실무자들에게 날씨정보 활용에 관하여 체계적인 교육을 실시해야 하며, 건축현장에 특화된 날씨정보를 제공하도록 기상정보시스템을 보완하는 것이 필요하다. 또한 장기적으로 건설날씨정보 전문가를 양성하여 건설업에 특화된 날씨정보를 지속적으로 유지, 관리할 수 있도록 해야 한다. 이를 통해서 날씨에 적극적으로 대응이 가능하며, 최종적으로는 현장의 성과가 향상될 것으로 기대된다.

• 영어영문학
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• 제57권6호
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• pp.1017-1041
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• 2011

This study investigates Korean EFL learners' awareness and use of the English existential there-construction by examining data collected from 54 Korean EFL learners of English by means of a pragmalinguistic judgment task and a controlled discourse completion task. The results of the judgment task reveal that lower proficiency learners rated canonical sentences and existentials with a preposed locative best in the communicative situations where the use of existentials would have been most appropriate. A comparison of the ratings by more proficient learners and native speakers shows that existentials received highest ratings by both groups where they are the most natural option, while canonical sentences received significantly higher ratings by the learners. With regard to the production data, learners tended to avoid existentials, but rather relied on canonical sentences. Existentials were rarely used by lower proficiency learners and not used productively even by more proficient learners in the situations where existentials would have been the most natural option. These results suggest that Korean learners' difficulty with the use of existentials is not merely a product of performance limitations, but attributable to limited knowledge about existentials and their syntactic alternatives in terms of contextual appropriateness. Lower proficiency learners lack such knowledge, and more proficient learners, while showing better awareness of the use of existentials, have problems as to the placement of new information when engaging in writing tasks that place lower level of demands on attention to the information status of noun phrases compared to communicative, oral tasks.

• 정보교육학회논문지
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• 제20권6호
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• pp.597-606
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• 2016

본 연구는 TPCK 모델을 활용하여 초등 예비교사들의 테크놀로지 활용과 관련한 역량 실태를 분석하고, 중요도-실행도 분석을 통하여 테크놀로지 활용 교육에서 개선해야 할 사항들을 우선순위를 분류하여 제안하였다. C대학교 4학년에 재학중인 예비교사 165명을 대상으로 설문조사를 실시하였다. 설문도구를 사용하여 테크놀로지 지식(TK), 테크놀로지 교수지식(TPK), 테크놀로지 내용지식(TCK), 테크놀로지 교수 내용지식(TPCK)과 관련한 중요도와 실행도에 대하여 예비교사의 인식을 알아보았다. 중요도와 실행도 차이를 분석하고자 t검정을 실시한 결과, TK, TPK, TCK와 TPCK 각 역량 뿐 아니라 모든 17개의 세부 역량들에 대해 중요도와 실행도 간에 유의미한 차이가 있는 것으로 밝혀졌다. 또한 중요도-실행도 분석을 실시한 결과, 우선적으로 집중하여 개선해야 할 세부 역량 5가지, 좋은 성과를 보이기에 유지해야 할 세부 역량 4가지, 저순위를 두어야 할 세부 역량 5가지 그리고 과잉 노력을 지양해야 할 세부 역량 3가지를 제안하였다.

• 환경영향평가
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• 제17권3호
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• pp.153-165
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• 2008

Recently the use demand for national parks has been rapidly increased due to the change of leisure patterns in Korea. The intensive use of national parks, however, can cause serious management problems both in resource conservation and in visitor satisfaction. In order to prepare the effective management plan for the sustainable use of national parks, it is essential to evaluate the visitor satisfaction. The purpose of this study is to provide important information for the management strategies for Namsan and Tohamsan national parks in Kyongju. Importance-performance analysis (IPA) was adopted to analyze the visitor expectation and satisfaction. The questionnaire survey was performed to the 420 visitors of the three sites (Namsan Sam-reung, Namsam Yong-jang, and Tohamsan) that are the most popular areas in Kyongju national park. The IPA for the 18 satisfaction items shows that all the values for importance are higher than those for performance in the three sites. This results indicates that visitors' satisfactions for the 18 items are lower than their expectations. The IP matrix reveals that the management effort should be concentrated on the educational opportunities for nature and culture in Yong-jang, on the convenient access to park in Sam-reung. and on the availability of cool drinking water in Tohamsan. Based on the results, several suggestions for the management strategies were summarized for the three sites in conclusion.

• 한국산업정보학회논문지
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• 제14권2호
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• pp.59-71
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• 2009

급변하는 경영환경 속에서 기엽이 지속적인 경쟁우위를 획득하기 위해서는 성공적인 정보기술전략과 효율적인 정보기술 투자를 위한 투자성과의 체계적인 관리가 필요하다. 따라서 본 연구에서는 정보기술전략인 운영지향성과 시장지향성이 정보기술 투자방향 및 프로세스 혁신역량과 기엽의 비재무적 성과와 재무적 성과에 미치는 영향을 분석하고자 한다. 본 연구의 실증연구에서는 SCM을 실행하고 있는 기업을 대상으로 설문조사를 실시하여 온라인과 오프라인을 통해 자료를 수집하였으며, 최종적으로 82개 의 표본을 분석에 사용하였다.

• International journal of advanced smart convergence
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• 제8권3호
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• pp.138-144
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• 2019

Understanding teachers in the early childhood education is crucial as it can not only affect the quality of children's education but also cause many critical problems such as child abuse. A significant amount of research work has been made on the use of robots in childcare classrooms. The finding from the research has shown many advantages such as the improvement of learning performance, social/emotional skills, creativity, concentration period, physical and cognitive development. However, most of the study has been implemented at the K-12 classrooms but not much has been focused on the education at the early childhood classrooms. Importantly, it is very crucial to understand teachers' perception, demands and technical competence about the new teaching tool, in order to maximize its educational effect. This paper investigates some critical issues existing in both teaching and managing in the early childhood education. It will also explore teachers' perceptions and expectations on the use of robots to identify some dilemmas that exist in their working and teaching environment. A survey study was conducted with 119 early childhood educators in South Korea. It analyzed the educators' perception of using robots to improve their teaching performance and to make better outcomes for children, investigated job satisfaction and difficulties that they have in the current work environment. This paper concludes with several guidelines for integrating and setting robotics in the early childhood environment, in order to engender productive outcomes for the future early childhood education.

• 디지털산업정보학회논문지
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• 제18권1호
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• pp.37-45
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• 2022

With the development of the 4th industry, big data using AI is being used in many areas of our lives, and the importance of data is increasing accordingly. In particular, as various services using personal information appear and hacking attacks that exploit them appear in various ways, the importance of personal information management is increasing. Personal information must be managed safely even when collecting, retaining, using, providing, and destroying personal information, and the rights of information subjects must be protected. In this paper, an analysis was performed on the notification of usage history during the protection of the rights of information subjects using the MyData model. According to the Personal Information Protection Act, users must be periodically notified of the use of personal information, so we notify each individual of the use of personal information through e-mail or SNS once a year. It is difficult to understand and manage which company use my personal information. Therefore, in this paper, a personal information usage history notification system model was proposed, and as a result of performance analysis, it is possible to provide the controllability, availability, integrity, source authentication, and personal information self-determination rights.