• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.1042-1045
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• 2009

The Food is very important in our life, And the agricultural products are one of the most important food materials. For buying it, it's hard for the consumer to trust the agricultural products. That this reason, why they can't easily get the product information about agricultural productions. If you can get it, It is only mark of information about The country of production, They can not get reliable informations such as Producers, productions, residual pesticides, and soil conditions, etc. Accordingly, When consumers buy these agricultural productions, They want to provide reliable information. In this paper, using an RFID(Radio-Frequency IDentification) reader who reads RFID TAG attached to products. Then, Acquired Certification Number sent to a web server. To get the Production informations and Safety Inspection Information. The way that consumers can trust the Agricultural Products. These Traceability systems were implemented.

• The Journal of the Convergence on Culture Technology
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• v.9 no.1
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• pp.141-152
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• 2023

The scale of the authenticity perceived by the athletes of the domestic business team was developed. Through this, it is intended to accumulate information and authenticity research on human resource management of unemployment teams. The authenticity scale was developed through a total of 6 steps by referring to previous studies on the scale development process at domestic and international. In the first stage, the basic composition was confirmed through the review of previous studies.In the second stage, preliminary questions were drawn through in-depth interviews with 13 players belonging to the business team. In the third stage, the authenticity attribute and structure were confirmed through an expert meeting. In the fourth stage, the appropriateness of the items was verified through exploratory factor analysis and reliability analysis of 248 people. In the 5th stage, 288 subjects were tested for construct validity, convergent validity, and discriminant validity through confirmatory factor analysis, correlation analysis, and reliability analysis. The sixth step was to verify the relationship through regression analysis with the performance variables to examine the applicability and predictability of the developed scale. Through the above procedures, 4 dimensions of organizational authenticity and 18 measurement items were developed, and 3 dimensions of leader authenticity and 18 measurement items were developed.

• Korean Journal of Culture and Social Issue
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• v.8 no.2
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• pp.137-170
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• 2002

The present paper reviews the development of democracy in the West and Korea. The first part of the paper provide a cultural framework for understanding the development of democracy in West and Korea. In the second part of the paper, an empirical study conducted in Korea will be presented. A survey questionnaire was developed to assess respondents' conception of political participation, political efficacy, trust, leadership, and social relations and it has been administered to national stratified sample in Korea (n=1,000). The results indicate that Korean respondents support the basic ideas of liberal democracy, such as the right to vote, participate in political organization, freedom of speech, and criticize government. At the same time, Korean respondents supported collective values, such as harmonious family life, harmonious social relations, and governmental welfare programs. Although Koreans trusted close ingroup members, such as family members and friends, they were less likely to trust their colleagues and outgroup members and were not likely to trust political and governmental institutions. Moreover, Korean respondents showed a low degree of political participation and efficacy and a high degree of political alienation. As for leadership, Koreans preferred moral and strong leaders. The overall results indicate that in Korea, although the basic ideals of democracy are valued, the method of implementing these ideals is different from the West. Detailed analysis of the results and implications of the study will be presented.

• Journal of Welding and Joining
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• v.20 no.4
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• pp.407-413
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• 2002

용접기술은 두 가지 재료를 효율적으로 신뢰성 있게 접합시킬 수 있기 때문에 다른 어떤 기술보다 널리 사용되고 있으며, 높은 부가가치를 가져다 준다. 용접계에서는 용접이 국내 산업에 아주 중요한 역할을 담당하고 있다고 생각하고 있으며, 이제 21세기에 접어들어서 우리 용접계의 현위치를 파악하고 새로운 장을 열어야 할 때이다. 미국에서도 이러한 준비의 일환으로 에너지성(Department of Energy)의 주도하에 Welding Vision 2020라는 명제를 걸 고 용접분야의 장래에 대한 심포지움과 토의를 하였다. 이 토의의 중심 주제는 20년 후의 용접계의 위상을 그려보며 장기적 연구 분야, 산학계의 정책 방향 등을 모색하였다 여기서 모아진 의견은, 용접계의 발전적인 진전을 위해서는 향후 2020년까지 다음과 같은 숙제들을 극복해야 된다는 것이었다 많은 산업분야에서 용접이 생산 분야의 주된 작업으로 인식시키는 것 - 용접이 용접 기능사의 재능에 의존도를 줄이고 과학적인 용접 기술 도입과 용접 기능사의 체계적 훈련 - 용접 작업환경 개선 - 용접을 과학적 고기술이라는 것으로 일반인들의 인식을 변화 시킴 - 신소재 개발연구시 용접이 같이 고려될 수 있는 환경 조성 - 훌륭한 인재 양성 및 재교육. 본고에서는 미국 용접계에서 분석한 자료들과 장래 연구되어져야 할 방향 및 분야들을 소개하고 현재 진행중인 자료 수집 및 분석의 진행 상황 및 용접계의 현 위치를 파악할 수 있는 몇 가지 자료들을 소개한다. 아울러, 용접계에서 리더쉽을 발휘해야 될 분야중의 하나이며 현재 많은 전문연구가 필요한 용접 역학(Welding Mechnics) 중의 용 접부의 안정성 평가(Integrity Assessment of Welded Joint)에 대한 과제와 연구 동향을 소개하고자 한다.

• Proceedings of the KIEE Conference
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• 2007.04a
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• pp.181-183
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• 2007

본 논문은 RF 리더기와 RF 태그 상호간의 통신시에 발생할 수 있는 충돌을 감지하고 이를 능동적으로 회피할수 있는 RFID(Radio Frequency IDentification)의 설계에 관한 내용이다. RFID는 사람, 자동차, 화물, 상품 등에 정보를 부가하는 시스템으로 그 부가정보를 무선통신매체를 이용하여 비접족으로 해독하는 시스템으로 기존의 바코드보다 데이터의 전송속도와 용량의 증가 그리고 편리성이 향상되는 장점이 있으나, 동시에 여러개의 RF태그와의 무선통신으로 인한 데이터의 충돌이 발생할 수 있다. 이러한 충돌을 감지하고 이를 적절하게 회피하는 것은 RFID 시스템의 신뢰성을 높이는데 필수적인 요소이다. RFID 태그로 사용되기 위해서는 건전지로 구동될 수 있도록 저전력소모가 요구되며 또한 통신의 시작과 충돌을 파악할 수 있는 캐리어 감지기능이 필수적이다. 본 논문에서는 이러한 조건들을 만족하는 Chipcon 사(社)의 양방향 RF IC를 사용하였다. Chipcon 사(社)의 양방향 RF IC는 다중 주파수 대역의 선택과 변조방식을 시리얼통신을 통해서 손쉽게 변경할 수 있기 때문에 충돌감지시 다양한 회피알고리즘을 상황에 맞게 구현할 수 있다. 본 논문에서는 양방향 RF IC를 사용하여 충돌을 감지하고 회피할 수 있는 RFID시스템을 설계하고 구현하였다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.143-146
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• 2009

The restaurants have been forced to inform the origin of ingredients to consumers due to the origin obligation policy enacted in 2008 October. However, it is difficult to trust the policy because the origin is represented by a manager's conscience. Therefore, in order to provide consumers with reliable information, we have designed, and embodied the agricultural management system using RFID and USN technology. By installing system on agricultural plantations this system not only manages environmental data such as temperature, illumination and humidity collected in real time but also offers consumers the information of fertilizers or pesticides sprayed on the crops. Before purchasing, consumers will be able to check raw flesh process and the fertilizer and agricultural chemical scattering scene of the crops as an image by using RFID tags with a leader, which more increase the reliability.

• Journal of the Korea Society of Computer and Information
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• v.26 no.12
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• pp.99-104
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• 2021

Blockchain technology is a distributed ledger technology that shares the ledger between multiple nodes connected to a distributed network. The data managed through the existing central server is managed through the blockchain, and the transparency, accuracy, and integrity of the transaction data is increased, and the need for data management through the blockchain is increasing. In this paper, recognizing the need for trust-based data sharing between trust-based institutions in the financial industry, this paper describes the process of selecting leader nodes in Raft, a private blockchain consensus algorithm, as a way to increase data management efficiency through blockchain. A modified consensus algorithm is presented. The performance of the modified consensus algorithm and the general Raft consensus algorithm presented in this paper was compared and analyzed based on the transaction processing time, and it was confirmed that the efficiency of the consensus process was increased by applying the proposed consensus algorithm.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.25 no.5B
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• pp.925-930
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• 2000

The Problem of allocating paths is very significant in order to transmit a large amount of various data on the ATM network. Therefore, selecting an optimal path among available paths between the a source node and a target node has been researched. Alternate paths designed in previous PNNI routing is not considered on the group-occupation so that traffic congestion happens, when errors occur in the network which consists of a hierarchical network architecture extendable to a large network, We propose the Top-Down algorithm considering an average of the occupation among the groups reported from a leader node in each group and minimizing a traffic congestion

• Korean Journal of Construction Engineering and Management
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• v.12 no.6
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• pp.93-100
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• 2011

As the construction management(CM) market has grown, so has the CM competition in the market place. Consequently, competent construction managers become a core part of CM firms' competitiveness. The objective of the study is to identify and discuss core competencies of construction mangers based on literature survey, Delphi Method and AHP. Among various competencies required for construction managers, skills for problem solving, trust and negotiation skills were identified as the crux of construction managers' competencies. A better understanding of construction managers' core competencies is very critical in terms of CM firms' training of construction managers and continuos self-improvement for construction managers.

• The Journal of Society for e-Business Studies
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• v.21 no.2
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• pp.23-46
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• 2016

With the increasing socio-economic value of an open collaboration over the Internet, it has become significantly important to successfully manage open source software development program. Most of the previous research have focused on various factors that influence the performance of the project, but studies on how the project owners recognized as "leader" affect the outcome of the project are very limited. This research investigates how individual and governance characteristics of an owner influences the performance of project based on impression formation and social capital theory. For a data set, we collect 611 Repositories and the owner's data from the open source development platform Github, and we form knowledge sharing network of an each repository by using social network analysis. We use hierarchical regression analysis, and our results show that a leader, who exposes a lot of one's personal information or who has actively followed and showed interests to communicate with other developers, affects positive impacts on project performance. A leader who has a high centrality in knowledge sharing network also positively affects on project performance. On the other hand, if a leader was highly willing to accept external knowledge or is recognized as an expert in the community with large numbers of followers, the result show negative impacts on project performance. The research may serve as a useful guideline not only for the future open source software projects but also for the effective management of different types of open collaboration.