• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권10호
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• pp.2658-2681
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• 2023

In edge computing scenarios, IoT end devices play a crucial role in relaying and forwarding data to significantly improve IoT network performance. However, traditional routing mechanisms are not applicable to this scenario due to differences in network size and environment. Therefore, it becomes crucial to establish an effective and reliable data transmission path to ensure secure communication between devices. In this paper, we propose a trusted path selection strategy that comprehensively considers multiple attributes, such as link stability and edge cooperation, and selects a stable and secure data transmission path based on the link life cycle, energy level, trust level, and authentication status. In addition, we propose the Stability-based On-demand Multipath Distance Vector (STAOMDV) protocol based on the Ad hoc AOMDV protocol. The STAOMDV protocol implements the collection and updating of link stability attributes during the route discovery and maintenance process. By integrating the STAOMDV protocol with the proposed path selection strategy, a dependable and efficient routing mechanism is established for IoT networks in edge computing scenarios. Simulation results validate that the proposed STAOMDV model achieves a balance in network energy consumption and extends the overall network lifespan.

• Journal of Information Technology Applications and Management
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• 제29권6호
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• pp.1-12
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• 2022

In recent years, technological competition in the automobile sector is accelerating. This study analyzes the status of patents from a global perspective of three promising future items that Korea has selected as core technologies in the field of autonomous driving,. And the technological cooperation ecosystem was identified through network analysis centered on scientific metrology. As a result of the analysis, it was confirmed that the growth of individual technologies has been strengthened in recent years, and although key source technologies have been largely preempted in major global countries, a close cooperative ecosystem between institutions, companies, and universities in major countries has not yet been formed. Specifically, the US and Japan have the technological leadership, while China is rapidly rising, and Korea is chasing after it as a latecomer. Therefore, it is necessary to continuously strengthen technological cooperation such as R&D of core technology to overcome technological limitations and strengthening of infrastructure construction, attracting excellent foreign talents and international exchanges. This analysis is meaningful in that it explores the global status of Korea's technology and the possibility of technological cooperation from various perspectives in the future from the viewpoint of preoccupation of future technology, rather than grasping the trend of a specific technology.

• 농촌지도와개발
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• 제1권2호
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• pp.147-163
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• 1994

Agricultural extension programs in Korea had focused mainly on increased production, and the biggest pride of extension was the achievement of rice self-sufficency in 1970s and abundant vegetable and animal production in 1980s. Farming in Korea has changed rapidly in recent years and extension system on commercialized crops have not been satisfactorily developed to mete farmers` demands. Facing the emerging challenges of international competition and trade liberalization for agricultural commodities, the goals of extension should be focused on increased income and the welfare of coral communities. The transfering of agricultural extension educator from central government jobs to local ones has emerged recently under the trends of localization which resulted unstable job environment of extension educator. Intensive pre-service and in-service training of extension workers on current and advanced techologies are essential to upgrade the quality of extension services, and the future directions for professional development of agricultural extension educators in Korea were suggested as follows: 1. Establishing a national network on agricultural extension system to promote exchanges of information among counties and provinces, to conduct meetings and to publish information on agricultural extension. 2. Determining the implications of recent national and global trends on agricultural extension, and strenthening communication at local, national and international levels for an effective extension system in the era of localization, internationalization and globalization; 3. Recognizing the effect of number and quality of extension staff on the impact of extension and providing opportunities development and advancement of extension personnel through education, training, incentives and rewards; 4. Giving a higher priority to agricultural extension in national policies in order to ensure the adequacy of budgetary support and recognition of importance of extension by the ministries concerned and mass communications.

• 통상정보연구
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• 제12권3호
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• pp.391-412
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• 2010

As traditional import regulations have decreased all over the world in recent decades, the usage of "unconventional" trade protection measures has grown in the developing countries. In particular, antidumping investigations have risen rapidly and have growing in India and China. Therefore, this thesis aims to provide countermeasures to our government and Korean exporting companies by studying characteristics of antidumping. India is one of the most frequent initiators of antidumping cases by protecting their industries and impeding imports from FTA. This year, economic exchanges of Korea and India will be increasing by the conclusion of CEPA. This will lead to the increase of dispute by import regulations. Under such circumstances, to decrease Indian antidumping cases Korea will respond as follows. i)If antidumping laws, system and practice of India have injustice or are different from WTO rules, our government will have to indicate injustice and actively urge Indian government to make corrections. For example, they are continuous bilateral contact about the problems, fallacy of calculation of dumping margin, and intense investigations into cause and effect relationship and losses in dumping market, ect. ii)Our government should give more support to the small and medium exporting company which have difficulties in dealing with trade conflicts, counseling, arbitrating a lawyer. iii)Our government which is in control of domestic trade relief system should strengthen its investigation ability about new regulations and moniter import regulations of India. Over the long time, Korean companies need to export competitive advantage items of a higher value-added business and build solidarity by technology transfer. Accordingly, that will result in the decrease of trade dispute in India.

• 한국항행학회논문지
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• 제18권6호
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• pp.541-545
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• 2014

ITU-R M.1842-1은 해상 이동 서비스를 위한 RR Appendix18 채널에서 VHF 대역의 디지털 통신의 가이드라인을 제공하는 국제 권고안이다. 본 논문에서는 ITU-R M.1842-1 Annex1에서 제시하는 28.8 kbps 급 ${\pi}$/4-DQPSK 디지털 기저대역 모뎀을 시뮬레이션하고, FPGA로 설계 및 구현한다. 권고안에 패킷구조가 아직 정의되지 않은 상태이므로 패킷검출 및 동기화를 위해 Cazac 시퀀스를 프리앰블로 사용한다. 기저대역 변복조 모뎀은 VHDL로 설계되어 자이링스사의 Atrix7 FPGA 칩이 장착된 NEXYS4 개발 플랫폼에 구현된다. 무선 통신 테스트를 수행하기 위해 ADC/DAC 보드를 제작하고, RF 모듈로서 EV9730을 장착하여 통합 프로토타입을 구현하고 실험한다. 권고안에 정의된 바와 같이 송수신신호는 25 kHz 대역폭을 유지하고, 송수신 플랫폼간 통신이 정상적으로 이루어짐을 실험을 통해 확인한다.

• 디지털융복합연구
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• 제13권1호
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• pp.415-427
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• 2015

본 연구의 목적은 국내 교육기관 및 단체를 국제인명구조연맹(ILS)과 다양한 면을 비교 조사를 함으로서 인명구조와 관련된 국내의 개선 상황을 살펴보고자 하는데 있다. ILS 내 회원국들의 인명구조요원 교육 제도를 살펴본 바, 수영장, 내수면(강, 호수, 저수지)과 외수면(섬, 해안, 해양)을 구분하여 장소와 환경적 요인에 따른 인명구조 교육이 보다 세분화되고 전문화된 프로그램을 사용하고 있었다. 반면 국내의 교육기관 및 단체는 각 협회의 상황에 따라 다양한 방법을 시행하고 있었다. 결론적으로, 먼저는 국내 각 교육단체들의 공신력 있는 교육제도의 확립과 인명구조요원의 용어사용을 단일화 함이 필요하며, 그리고 국제교류를 통해 선진화된 인명 구조 제도를 보급하고, 신뢰성과 공신력 있는 자격을 관리 감독하며 나아가 세계 수준의 표준화를 세워 가는데 앞장서야 할 것이라 여겨진다.

• 한국의류학회지
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• 제40권6호
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• pp.1062-1071
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• 2016

Olympic uniforms emphasize aesthetics along with sports fashion trends and tendencies to display national competitiveness through colorful designs that use the national flag or colors as motifs. Korea needs to enhance the national brand through international sporting events such as the 2018 PyeongChang Olympic Games (30 years after the 1988 Seoul Olympic Games); therefore, a multilateral analysis is required to promote a global image of Korea. This study presents a development direction for more diverse national brand values for Korea through design research on Olympic uniforms. Research methods investigated the concepts and changes of the Geongongamli, and Taegeuk symbols as well as Olympic uniforms based on literature data and existing studies using uniforms. An Olympic uniform using symbols of the Korean flag was designed through a case analysis of Olympic uniform designs of countries that participated in the 2012 London Summer Olympic Games and 2014 Sochi Winter Olympic Games that reflect the countries' image. The research scope excluded uniforms for the actual games and limited the uniforms to official uniforms for the opening ceremony that represent the characteristics of each country; consequently, we analyzed 70 uniforms of 162 countries of the Winter Olympic Games. As a result, official national symbols were more frequently reflected than unofficial symbols in the uniform designs of the Summer and Winter Olympic Games with more frequencies of direct reflection than indirect reflection. Korea's national brand is expected to enhanced through a uniform that expresses Korea's image at international events and global exchanges.

• Journal of Information Science Theory and Practice
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• 제8권4호
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• pp.40-54
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• 2020

This proposed work aims to understand the Korean Academic Circle (KAC)'s research trend on the "One Belt One Road" (OBOR) by employing a quantitative analysis of the recent research articles published by the KAC. To do so, this proposed research has used the well-known network analysis software, Ucinet 6, by which the papers on related topics are collected and filtered from Korea Citation Index. To perform the analytical selection, the proposed work has chosen 'keywords' as the core research object and performed analysis from transverse to longitudinal aspects, and from holistic to individual aspects, respectively; and from this, the KAC's research trend on OBOR is derived. The present work has established that the KAC's attention is continuously increasing on OBOR and has sustainability. Centered on the OBOR, Korean researchers have spread their studies in various dimensions ranging from the issues like China's political economy to Sino-Korea economic and trade exchanges, and so on. The KAC has even combined OBOR with Korea's international development initiatives, which can help Korea benefit from active and sustainable cooperation with China. Moreover, the proposed work has found that Korean researchers have also actively expressed their growing attention, highlighted Korea's interest, and showed concern about China hegemony and Sinocentrism in their recent documented research works.

• 한국정보통신학회논문지
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• 제24권3호
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• pp.420-427
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• 2020

미·중 무역 분쟁이 시작된 이래로 전 세계의 관심은 물론이고 각 국의 무역에도 영향을 미치게 되었다. 하지만 미·중 무역전쟁은 전통산업의 경쟁에만 국한되지 않았으며 5G 산업의 경쟁도 갈수록 치열해지고 있다. 본 연구는 문헌연구를 중심으로 미국이 중국의 화웨이 회사에게 제재를 가하게 된 심층적인 원인을 분석하였다. 또한 이에 대한 문제점을 파악하고 해결방안을 제시하고자 한다. 미·중 무역 전쟁이 끊임없이 확대되고 빠르게 성장하고 있는 중국 산업은 미국의 산업에 영향을 줄 수 있으며 미국의 제재는 더 강화될 수 있다. 미국의 제재에도 불구하고 중국 5G의 빠른 속도와 효율적인 비용은 중국의 경쟁력을 더욱 높여 주고 있다. 하지만 앞으로 미국의 경제제재 하에서 중국의 5G 산업은 어떻게 생존하고 더욱 발전 할 것인가에 대한 심도 있는 연구가 이루어져야 한다.

• International Journal of Computer Science & Network Security
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• 제22권2호
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• pp.250-260
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• 2022

Mobile Banking Applications (MBAPs) is one of the recent fads in mobile trading applications (Apps). MBAPs permit users to execute exchanges of money and many more whenever it might suit them; however, the primary issue for mobile banking Apps is usability. Hardly any investigation analyzes usability issues dependent on user's age, gender, exchanging accomplices, or experience. The purpose of this study is to determine the degree of usability issues, and experience of mobile banking users. The survey employs a quantitative method and performs user experiment on 240 participants with six different tasks on the application's interface. The post experiment survey is done with concerning participants. On the other hand, banking experts and Information Technology (IT) expert's group is also involved after the experiment. Expert's opinions about existing mobile banking Apps and suggestions for improving usability of MBAPs are collected through physical means (like questionnaire and interview) and online means like Google form. After that comparison of the opinions of users and experts about MBAPs is performed. The experimentation measures the tasks usability of various mobile banking apps with respect to its effectiveness, efficiency, trustfulness, learnability, memorability and satisfaction. The usability testing was led at different Universities and the outcomes acquired show that there are privacy and trust issues with their mobile banking apps. There is also a gap between users and experts which should be minimized by applying customized usability models, modes concept like other application software and also by adding complete features of banking in MBAPs. It will benefit mobile banking apps users, developers and usability engineers by providing user-friendly which are up to the mark of user's requirements.