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IPv6 기반 동적인 이동 네트워크에서의 Fault Tolerant 메커니즘
장정규(Jung-Gyu Jang),김원태(Won-Tae Kim),박용진(Yong-Jin Park) 한국정보과학회 2006 한국정보과학회 학술발표논문집 Vol.33 No.2D
동적인 이동 네트워크는 다중의 무선 Ad-hoc 네트워크들로 구성된 독립적인 WPAN(Wireless Personal Network)이 모인 이동 네트워크의 한 종류이다. 휴대폰과 같은 모바일 장치들이 동적인 이동 네트워크에서 모바일 라우터로 동작하기 때문에 트래픽 과부하, 네트워크 신뢰도, 에너지 소모율 등의 네크워크 fail과 관련된 문제점 들이 제시된다. 따라서 동적인 이동 네트워크에서 fault tolerant 메커니즘은 필수적인 이슈가 될 것이다. 본 논문에서는 빠른 경로 변경 메커니즘과 추가적인 모바일 라우터 선정 메커니즘을 이용하여 향상된 fault tolerant 메커니즘을 제시한다. 최종적으로 모의실험을 통해 에너지 소모율과 패킷 손실 측면에서의 효율성을 보여줄 것이다.
김광년(Kwang-nyeon Kim),강승리(Seung-ri Kang),김영욱(Young-wook Kim),남궁민(Goong-min Nam),박소영(So-young Park),유태관(Tae-gwan Yoo),장정규(Jung-gyu Jang),강순희(Soon-hee Kang) 한국정보통신학회 2022 한국정보통신학회 종합학술대회 논문집 Vol.26 No.1
이 연구의 목적은 전국의 4년제 물리치료학과 학생들의 임상실습 만족도를 조사하는 것이었다. 연구대상자들은 총 157명의 대학생들로 구성되었다. 대상자들은 임상실습만족도 설문지 36문항과 일반적인 특성을 묻는 5개 문항으로 구성된 온라인 설문조사를 완성하였다. 수집된 데이터는 빈도분석, 독립 t 검정, 일원배치분산분석 및 사후검정(Schffe)을 사용하여 분석되었다. 연구결과는 다음과 같다. 학생들의 임상실습 만족도는 평균 3.84점(5점 만점)이었다. 학생들의 만족도는 ‘임상실습 후 만족감’의 항목에서 가장 점수가 높았고 임상실습에서 ‘내적 갈등’과 ‘임상실습 평가’에서 가장 점수가 낮았다. 학생들의 임상실습 만족도는 전공 만족도에 따라 유의한 차이가 있었다. 즉, 전공 만족도가 높을수록 임상실습 만족도가 더 높았다. 임상실습 만족도는 성별, 학년, 실습기간 및 실습기간에 따라 유의한 차이가 없었다. The purpose of this study was to investigate the satisfaction of clinical practice for university students in the physical therapy department. 163 students participated in the study. The subjects completed an online survey that consisted of 36 clinical practice satisfaction question and 5 questions of general characteristics. The collected data was analyzed by using frequency analysis, independent t-test, one-way ANOVA and Scheffe post hoc analyses with a significant level of 0.05. The students’ satisfaction of clinical practice was 3.84 in average on a scale of 5. The students’ satisfaction was the highest for the item ‘Satisfaction after clinical practice’, and the lowest for the item ‘Internal conflict in clinical practice’ and ‘Evaluation of clinical practice’. The students’ satisfaction of clinical practice showed significant differences according to the satisfaction of the major (p<.001), however, no significant difference according to gender, grade, training period and practice institution.
이양우,장정규 한국유통정보학회 2002 유통정보학회지 Vol.5 No.1
A study on the Customer Protection result from Electronic Commerce Present industrial society is knowledge society or information society. By bringing computer technologies and information communication technologies together, internet appeared and used commonly, moreover, it created new cyberspace. As this cyberspace made electronic transactions possible that is different from ordinary mode of dealing, it offers reduction in time and costs, customer centered services, resolving time and space limitation, and it offers customers new world that they could's even imagine before. Not like normal mode of transaction, electronic transactions is digitalized and transaction is mode based on not-facing dealing instead of facing dealing. Moreover, because electronic transactions is corresponding dealing to standardized forms and chosen terms of dealing, and many unspecific people interpose, and it shows international character that is dealing through internet, it has more possibilities of customer's loss compared with normal transaction mode. Specially, as electronic transactions increases between companies and customers, protecting customers who are weak is essential. Solutions for protecting customers from many problems that can happen in electronic transactions are listed at below. At first, securing confidence of customers. To prevent impostures that customers are worried most, certification by appointed licensed Certificate Authority for confirming major matters that are related to the dealing should be issued, and also for user's credit judgment, information offering system(marking system and credit assessment authority) by third party is required. The best method of securing customers' trust is activation education of customers and entrepreneurs. Moreover, because error responsibility principle doesn't work well, and insurance system that can break up losses and damages should be found. On the other side, according to specific characters of electronic transactions, by using Electronic Transaction Act, Electronic Signature Act, Electronic Transaction Customer Protection Guideline, Standardized Contracts of Electronic Transactions, effective regulations should applied. Specially, because act of electronic transactions has guideline character, there are necessity of supplementation about insufficient parts of existing law. Also, problems in electronic transactions can be really effected by autonomic controlling efforts of entrepreneurs. America, EU, Japan and other many advanced countries realize customer protection by preferring autonomic control instead of legislating rashly. Therefore, in our country, government, with strong leadership, should grant incentives that legally approves about decisions and evaluation of regulations, which are made by enterprises autonomically, and self-imposed control organization, which is established and operated by the industry.
우리나라 中小企業의 電子商去來 障碍要因과 活性化 方案에 관한 硏究
이양우,장정규 한국유통정보학회 2001 유통정보학회지 Vol.4 No.2
Considering the significant importance of small and medium sized industry in the national economy and its potential value from the sense of one community by nature, the role of uprising small and medium companies in the new markets based on electronic commerce has become one of the biggest political issues in every country nowadays. Small companies can take more benefits from information technology and electronic commerce than the larger ones. The size of a company really does not concern any longer, in the internet business, as far as small-sized companies explore regional expansions and develop new customers as the larger companies used to do before, and thereby they can equally compete with the larger companies. To enhance the electronic commerce trade, fundamental and systematic solution for such impaction factors, as information security, electronic settlement, standardization, intellectual property, as well as technical disadvantage, should be taken into consideration. This thesis is composed of five chapters as follows : Chapter 1 was introduction this thesis. Chapter 2 provided a basic research and theoretical inquiry into electronic commerce. Chapter 3 offered an inquiry into the present situation and trend of electronic commerce in Korea(in international movement) classified by general and small & medium enterprises. Chapter 4 identified the barriers of electronic commerce small & medium enterprises. And suggested to overcome those barriers and to enlarge Korean electronic commerce small & medium enterprises. Chapter 5 presented the concluding remarks. Electronic Commerce cannot replace the whole future logistic environment, but has been widely adopted as a new axis in logistics. So, broad study especially on the development of logistic information system and electronic commerce standard model for small & medium companies and DB marketing should be additionally conducted, in line with the study on its influence on political and economic dimensions. Small & medium enterprises can easily adopt themselves to the rapidly changing technological environment with continuous innovation. This means that the small & medium enterprises are an enterprise from which is most suitable for the knowledge and information society in 21C.