• Journal of dental hygiene science
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• v.3 no.2
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• pp.77-82
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• 2003

The purpose of this study was to examine the characteristics of dental homepages in korea to discuss how they could be improved better. The findings of this study could be described as below : First, dental homepage should include differentiated, specialized content and features. Second, the use of three-dimensional image or multimedia would contribute to increasing people's understanding of dental treatment or general dental information and elevating the effectiveness of dental publicity activities. Third, the want ad and order system used by the business sector or hospital would serve to multiply the management efficiency of dental institutions. Fourth, dental hospitals and clinics that belong to the same network or franchise need to make publicity banner for feasible mutual link, and the use of the same homepage design or common logo would be effective for better image and publicity activities. Fifth, it would be convenient to add the map search function or inquiry system. Seventh, if multiple types of services, such as entertainment or game, are prepared, it would be possible for dental institutions to project a better image and to induce visitors to hit the sites again.

• Journal of Information Management
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• v.37 no.1
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• pp.83-103
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• 2006

This study analyzes the classification schemes and classified information resources of the directory services provided by major web portals to complement keyword-based retrieval. Specifically, this study intends to quantitatively analyze the topic categories, the information resources by subject, and the information resources classified by the topic categories of three directories, Yahoo, Naver, and Empas. The result of this analysis reveals some differences among directory services. Overall, these directories show different ratios of referred categories to original categories depending on the subject area, and the categories regarded as format-based show the highest proportion of referred categories. In terms of the total amount of classified information resources, Yahoo has the largest number of resources. The directories compared have different amounts of resources depending on the subject area. The quantitative analysis of resources classified by the specific category is performed on the class of 'News & Media'. The result reveals that Naver and Empas contain overly specified categories compared to Yahoo, as far as the number of information resources categorized is concerned. Comparing the depth of the categories assigned by the three directories to the same information resources, it is found that, on average, Yahoo assigns one-step further segmented divisions than the other two directories to the identical resources.

• Journal of KIISE:Databases
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• v.37 no.5
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• pp.258-266
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• 2010

In this paper, we introduce a novel method to predict next update of blogs. The number of RSS feeds registered on meta-blogs is on the order of several million. Checking for updates is very time consuming and imposes a heavy burden on network resources. Since blog search engine has limited resources, there is a fix number of blogs that it can visit on a day. Nevertheless we need to maximize chances of getting new data, and the proposed method which predicts update probability on blogs could bring better chances for it. Also this work is important to avoid distributed denial-of-service attack for the owners of blogs. Furthermore, for the internet as whole this work is important, too, because our approach could minimize traffic. In this study, we assumed that there is a specific pattern to when a blogger is actively posting, in terms of days of the week and, more specifically, hours of the day. We analyzed 15,119 blogs to determine a blogger's posting preference. This paper proposes a method to predict the update probability based on a blogger's posting history and preferred days of the week. We applied proposed method to 12,115 blogs to check the precision of our predictions. The evaluation shows that the model has a precision of 0.5 for over 93.06% of the blogs examined.

• Journal of the Korean Society for Library and Information Science
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• v.41 no.4
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• pp.93-111
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• 2007

The Internet is now an integral part of the everyday lives of a majority of people. Web users are becoming increasingly skeptical of the information and services offered online. They are demanding web sites that offer credible information. This study focused on what features of web sites affect the perception of web credibility. For this purpose, I took the responses from 648 people and extracted 49 factors that affect web credibility. I placed the individual factors - the specific questions asked in the survey - into one of four categories expertise. trustworthiness, ads and other and calculated the means for each of the 49 factors. As a result, 29 out of 49 factors increase the Perceptions of credibility and 20 factors decrease the web credibility. Sites with frequently update. the credentials of authors, strict content guides, search capabilities, clear connections to the real world fared good in credibility. Technical problems such as broken links, site sown, or typographical errors were rated the most negative on this scale On the other end of the scale, a domain name that ends in' .org' or' .or.kr' caused little change in perception of credibility.

• Journal of the Korean Society of Food Science and Nutrition
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• v.32 no.1
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• pp.102-108
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• 2003

This study investigated the current tendency of the middle school student's use of the food and nutrition information from the internet web site. The research employed web survey for the national middle school students. Middle school students usually searched the internet information to do homework and to solve the own curiosity. Forty percent of respondents had experience to get food and nutrition information from tile internet, and 74% of them were girl. Cooking method and world cooking exploring were the most wanted information among food and nutrition information. Professional cooking site and tips of food and nutrition from study aiding sites and monthly magazine sites were tile resources of food and nutrition information. The mai or reasons for searching the food and nutrition information were to know the cooking method and out of curiosity. The most unsatisfied problems were unnecessary information, too much advertisement and too difficult contents when the users approached the site to get the food and nutrition information. Students who have been not interested in and had no homework about food and nutrition, had no visiting experience of web sites for food and nutrition information. Therefore, to provide food and nutrition information for teenagers through internet, web sites were developed to have easy contents linked to study aiding site or other sites that teenagers frequently visit. Since teenager's interest about health issues is not as high as adult's one, the contents of sites must be easy for teenagers to follow and fun, however, should be based on scientific facts on food, nutrition and disease.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.9
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• pp.1865-1872
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• 2009

This study suggests a method for extending XMDR to integrate and search legacy system. This extension blends MSO(Meta Semantic Ontology) for the management of metadata, ML(Meta Location) for the management of location information, and Topic Map which is the standard language used to represent semantic web. This study refers to it as TMDR(Topic Map MetaData Registry). As an intelligent layer, Topic Map functions like an index. However, if the data frequently changes, the efficiency of Topic Map may drop. To solve this problem, the proposed system represents the relation among metadata, the relation among real data, and the relation between metadata and real data as Topic Map. The represented Topic Map proposes a method to reduce the changing relation among real data caused by the relation among metadata.

• The KIPS Transactions:PartB
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• v.19B no.4
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• pp.237-242
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• 2012

Web information service needs a document classification system for efficient management and conveniently searches. Existing document classification systems have a problem of low accuracy in classification, if a few number of feature words is selected in documents or if the number of documents that belong to a specific category is excessively large. To solve this problem, we propose a document classification system using 'Modified ECCD' feature selection method and 'Category Weight for each Document'. Experimental results show that the 'Modified ECCD' feature selection method has higher accuracy in classification than ${\chi}^2$ and the ECCD method. Moreover, combining the 'Category Weight for each Document' feature value and 'Modified ECCD' feature selection method results better accuracy in classification.

• Journal of The Korean Association of Information Education
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• v.15 no.1
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• pp.155-162
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• 2011

It is proven that students learn more effectively when they apply Empirical knowledge which they have experienced or been facing. Therefore, the customized training supporting systems for information communication ethics education for primary school is developed. It provide resources on the internet such as teaching methodology, teaching materials, real life examples and applications related to information communication ethics education to the teachers. Each resource is categorized according to the topic and it improved information communication ethics education by providing customized resources on the topic. It is also helpful for users to select necessary resources by informing the suitability between the subject and the resources and to lift the burden on searching the data.

• Journal of The Korean Association of Information Education
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• v.4 no.2
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• pp.223-231
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• 2001

Hypermedia documents include structural information for their documents There have been researches on storing and searching hypermedia documents using the structural information of the documents. For the purpose of presenting hypermedia documents, however, only a few models have been proposed. In this paper, we propose a new object-oriented model based on the structural information of HyTime documents for storing and also presenting efficiently the documents. For this modeling, we consider an application of HyTime, a system for a news-on-demand service that provides news customized by user requests. Our modeling can be applied to several Hypermedia application areas, like as customized web-based instructions and digital libraries as well as news-on-demand services.

• Journal of the Korean Society for information Management
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• v.22 no.4 s.58
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• pp.39-59
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• 2005

This study is aimed to evaluate the undergraduate students' information literacy, examine the current level of their capability of using information, and make a evaluation model to develop information literacy. Information literacy consists of six fields information resources, information needs, information search, information analysis, information technology and presentation, and Information ethics. Based on the result of statistic factor analysis, the integrated evaluation model of information literacy, evaluation factor, and evaluation procedure can be suggested based on the instruction guidance.