• KSII Transactions on Internet and Information Systems (TIIS)
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• 제6권1호
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• pp.5-23
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• 2012

Nowadays, most researchers and manufacturers always pay attention on wireless sensor networks (WSNs) due to its potential applications in many regions such as military, industrial and civilian areas. WSNs are the basic components of Internet of Things (IoT) and the key to machine-to-machine communications and the future Internet. Also, the security is an essential element for deploying WSNs. Recently the concept of trust-based mechanism was proposed in WSNs such as traditional cryptographic and authentication mechanisms. However, there is lack a survey on trust management for WSNs, IoT even future Internet. In this paper, we discuss the concept and potential application areas of trust management for WSNs and IoT worlds. Furthermore, we survey different trust management issues (i.e., cluster, aggregation, reputation). Finally, future research directions with respect to trust management in WSNs and future IoT world are provided. We give not only simple WSNs for IoT environments but also a simulated bootstrap platform to provide the discussion of open challenges and solutions for deploying IoT in Future Internet.

• 한국산업정보학회:학술대회논문집
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• 한국산업정보학회 2002년도 춘계학술대회 논문집
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• pp.7-20
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• 2002

인터넷의 보급으로 환경 변화에 신속, 정확하게 대처하기 위하여 질 높은 정보들이 기업이나 개인에게 필요하게 된다. 본 논문에서 이러한 인터넷 환경에서 자신에게 필요한 정보를 빠르게 확보하기 위한 방법으로 설문조사와 원서 접수를 이용하였다. 웹 GUI 환경을 기반으로 하여 사용자의 편의성을 제공하였고, Agent 개념을 도입하여 설문조사와 원서 접수가 등록되면 자동으로 적합한 정보를 검색하여 사용자에게 제공하여 줌으로 흥미 유발과 참여도를 높일 수 있다. 또한 정보의 빠른 수집이 가능하여 짐에 따라 사용자의 의사결정에 도움을 준다.

• 한국조사연구학회지:조사연구
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• 제12권2호
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• pp.145-157
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• 2011

인터넷 조사에 가중치를 적용하여 그 일반성을 높이고자 하는 시도가 다양하게 이루어졌지만, 안정적으로 적용될 수 있는 방법이 아직까지 개발되지는 않았고 이것이 인터넷 조사의 활용을 제약하고 있다. 인터넷 조사를 위한 가중치 개발에는 준거조사 결과가 필요하지만, 센서스나 정부기관에서 제공되는 통계 중 일부 인구학적 속성을 제외하면 이러한 준거 조사 자료를 구하기 어렵다는 것이 중요 요인이다. 본 연구는 생활시간 조사를 이용해서 가중치를 개발하여 적용할 때, 인터넷 조사의 일반성을 높일 수 있는지를 검토해 보았다. 생활시간 조사는 정부기관에 의해 정기적으로 조사될 뿐만 아니라 센서스와는 달리 라이프스타일에 관련된 다양한 내용을 조사하기 때문이다. 2009년에 실시된 통계청 사회조사의 온라인 버전을 2004년 생활시간 조사결과를 이용해 가중치를 적용한 결과, 2009년에 동일한 설문지를 이용해 실시된 면접원방문 사회조사결과에 보다 일치하는 방향으로 작용하는 것으로 나타났다. 즉 생활시간 조사에서 나타난 취침 시간, 귀가시간, 인터넷 이용시간 등을 이용해서 가중치를 적용했을 때 단지 인구학적 속성만을 이용해서 가중치를 적용하는 경우보다, 온라인 조사결과와 오프라인 조사결과가 보다 근접해지는 경향이 있다는 것이다. 이러한 본 연구의 결과는 생활시간 조사자료가 인터넷 조사의 가중치 개발에 활용될 수 있다는 점을 보여준다.

• 경영과학
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• 제17권3호
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• pp.5-17
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• 2000

The needs of strategic approach toward the usage of the Internet in corporate context are increasingly important as digital economy changes the way of doing business. However, companies are not easily taking the opportunity since the strategic use of the Internet is difficult because of the conflicts in distribution, business process, organization structure, etc. The Internet strategy applicable to companies in a generic context is proposed by identifying the CSFs (Critical Sucess Factors) in exploiting the potential of the internet. CSFs are derived by the previous study and case analysis, from which two most important factors are chosen based on a survey. In the survey, the ranking of the significance of the 8 CFSs from the 25 cases is questioned to the internet experts. Then a $2{\times}$2$ matrix is designed to find the optimal area for a company to be successful in the Internet usage. The strategy suggested here appears to be the shifting strategy in order to be in the optimal area in using the Internet strategically.

• Journal of the Korean Data and Information Science Society
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• 제14권3호
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• pp.511-523
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• 2003

Internet has become an important part of teenagers' life and has changed the life style of teenagers. Internet can be an useful tool for educating teenagers and also can be misused as a cyberspace for social problems. Recognizing that teenagers spend most of their free time enjoying internet and they form their own new life culture, it is needed to develop practical strategies for maximizing the positive effect of internet on the teenagers' culture. The purpose of this research is to suggest a desirable way for forming teenagers' healthy internet-based culture. The research was conducted by the survey of teenagers in the city of Pyongtaek on their use of internet and their problems The survey shows that most of teenagers are using internet in order to release the stress and most of them are hooked on it. It also indicates that cyber police and volunteer groups should be formed to help the desirable teenagers' internet-based culture.

• 한국데이터정보과학회:학술대회논문집
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• 한국데이터정보과학회 2006년도 PROCEEDINGS OF JOINT CONFERENCEOF KDISS AND KDAS
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• pp.131-140
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• 2006

There are many statistical information sites as the use of internet is increased quickly in recent years. In this paper, we explore and analyze internet sites for statistical information such as statistical survey system, education, database, and terminology. And then we classify these sites to apply statistical information to some particular spheres easily. In so doing, this study result aims at enhancing our understanding of internet sites for statistical information.

• 패션비즈니스
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• 제9권3호
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• pp.134-149
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• 2005

Although Internet retailing is becoming a viable channel for apparel retailing, consumers are still reluctant to use Internet for apparel purchasing because at their concerns at Internet security and the difficulties at virtual shopping in unfamiliar shopping environment. The purpose at this study is to examine the nature at perceived risk associated with Internet apparel shopping and risk-reduction strategies used by Internet apparel shoppers. The data were collected via an online survey by a online research company. A total at 4,254 Internet users participated in this survey. Among these Internet users, 1,146 respondents had previous shopping experience in Internet shopping. Within this group, 195 were Internet apparel information seekers, and 589 were Internet apparel purchasers. Descriptive statistics, analysis of variance, and t-test were used to analyze the data. The perceived risks and risk-reduction strategies used by Internet apparel no-interest shoppers, Internet apparel information seekers (browsers), moderate Internet apparel purchasers, heavy Internet apparel purchasers were examined and compared. The results indicated that these tour groups were significantly different in apparel related risk, performance risk, and privacy risk. Internet purchasers tend to perceive more apparel-related, performance, and privacy risks than others. The results also indicated that these tour groups were significantly different in their opinions of risk-reduction strategies.

• Journal of Nutrition and Health
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• 제36권9호
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• pp.960-965
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• 2003

For the purpose of developing 'internet nutritional education program', this study analyzed the actual states of internet nutritional information of middle/high school students. Survey questionnaires were distributed from October 21, 2002 to October 26,2002 to a total of 564 students at three junior high schools and five senior high schools located in Seoul. The total number of questionnaires collected and used in our study was 479, which is 84.9% of the total questionnaires distributed. According to the survey results, we found significant difference in the nutritional information source between middle and high school students (p < 0.05) , and two groups responded that effective nutrition information material is 'electronic materials'. Most of the respondents connected with internet more than 1 times per day, but a large number of students were not experienced in using nutrition information of the internet. All groups were using nutrition information of the internet for homework, and satisfaction level of using nutrition information of the internet were an average. Effective methods for acquiring nutrition information of internet were 'educational game' for middle school students and 'bulletin board (Q & A)'for high school students. Moreover the factor analysis for internet nutritional information program's characteristics showed that 'instructing plans','contents of study & technical support','availability'and'interaction'were important considerations for developing internet nutritional information program. We found out through our analysis that was a strong need for a more practical and effective internet nutritional education program for middle and high school students.

• 가정과삶의질연구
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• 제27권4호
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• pp.127-139
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• 2009

The purpose of this study was to develop a standardized scale to measure consume's impulse purchasing in internet shopping mall. As internet shopping is expanding rapidly, the consumer's impulse purchasing in the internet shopping is also increased. A preliminary 26-item scale was developed through a literature review. 1230 consumers responded to an online survey using the preliminary scale. This research was made with the intention of not only supplying the academic data on the consumer's impulse purchasing but also understanding the consume's basic behavior patterns in internet shopping mall. Then A series of tests, such as test-retest, item-to-total correlation, Cronbach's reliability coefficient and factor analysis, were conducted using the survey data. The final scale with 20-items was constructed in the end. The consume's impulse purchasing in internet shopping mall Scale for Consumers consisted of 4 factors.

• 대한영양사협회학술지
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• 제7권3호
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• pp.295-306
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• 2001

The purpose of the study was to develop an internet nutritional counseling program using an expert system to assist obese people to lose weight through behavior modification. The internet counseling program for weight loss was developed by the accumulation of knowledge dealing with eating habits and exercising behaviors in expert system tool, Knowledge Engineering Agent (KEA) by a dietitian without any help of computer expert. To accumulate knowledge into KEA, survey was performed in 150 obese people, dietitians reviewed and consulted each survey case, and the consulted contents were learned and accumulated into KEA. Survey questionnaire was the same as that of the internet consulting program, and it included general characteristics, dietary habits, lifestyle, and exercise patterns related to obesity. Also, the dietitian selected proper factors inferred from the survey questionnaire of each case, and added the conclusions for them. Conclusions were made for helping clients to correct bad eating behaviors and accumulate good behaviors to lose weight. Counseling was divided into two parts; a two-week part and a daily part. Two-week counseling was performed based on 4 step questionnaires, and daily counseling was done for daily food consumption and physical activity. When clients answered survey questionnaires in a counseling internet program, the recommendations on how to eat, to exercise and to deal with stress in a real time for each case, was given. In conclusion, a counseling internet program for weight reduction can be used to give advices how to deal with obesity in a man-to-man way in a real time using KEA where nutritional knowledge based on behavior modification for weight loss was accumulated.