• Journal of the Korean Society for Library and Information Science
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• v.44 no.4
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• pp.395-412
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• 2010

This study aims to perform an evaluation of multimedia search services provided by major Korean search portals: Naver, Nate, Daum, Yahoo-Korea, Paran, and Google-Korea. These multimedia search services are evaluated in terms of the metadata of search results, search functionalities, searching methods, other functionalities, and display options. Every search portal offers image and video searching, whereas only Naver, Nate, and Daum offer music searching. Advanced searching methods and functions are mostly developed and supported in image and video searching rath than music searching. Naver, Nate, and Daum support various searching functions which search portals abroad have not developed. Google-Korea supports advanced searching functions. Search portals provide a limited number of metadata in search results. This study could contribute to the development and improvement of portal's multimedia search services.

• The Korea Journal of Herbology
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• v.31 no.4
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• pp.93-100
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• 2016

Objectives : The internet is the most common method to investigate information. It is showed that 75.2% of Internet users of 20s had health information search experience. So this study is aim to understanding of interest of public about the herbal medicine using internet search query volume data.Methods : The Naver that is the top internet portal web service of the Republic of Korea has provided an Internet search query volume data from January 2007 to the current through the Naver data lab (http://datalab.naver.com) service. We have collected search query volume data which was provided by the Naver in 606 herbal medicine names and sorted the data by peak and total search volume.Results : The most frequently searched herbal medicines which has less bias and sorted by peak search volume is 'wasong (와송)'. And the most frequently searched herbal medicines which has less bias and sorted by total search volume is 'hasuo (하수오)'.Conclustions : This study is showed that the rank of interest of public about herbal medicines. Among the above herbal medicines, some herbal medicines had supply issue. And there are some other herbal medicines that had very little demand in Korean medicine market, but highly interested public. So it is necessary to monitor for these herbal medicines which is highly interested of the public. Furthermore if the reliability of the data obtained on the basis of these studies, it is possible to be utilizing herbal medicine monitoring service.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2008.06a
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• pp.530-535
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• 2008

현재 서울시 내에는 수많은 공공조형예술품들이 있다. 하지만 시민들은 그것들이 어디에 위치하고 있는지 쉽게 파악 할 수 없는 실정이며, 그에 따라 공공조형예술품들을 즐길 기회 또한 잃고 있다. 그래서 Web2.0 및 Mash-Up을 활용한 Web Portal Site를 구축하여 그것들에 대한 위치정보를 제공해 줄 뿐만 아니라, 시인들의 의견을 수렴하여 관리 및 유지보수 측면 등의 의사결정에 직접적으로 참여할 수 있는 Web 공간을 구축하였다. 기본적으로 서울시에서 파악하고 있는 공공조형예술품들에 대한 DB를 제공하고 또한 사용자가 정보를 입력하는 인터페이스를 통하여 기존 DB에 없는 정보를 추가함으로써 관리자 및 사용자가 쌍방향으로 DB를 구축하게 된다. DB를 바탕으로 Naver Map 및 Google Map 을 활용한 공공조형예술품들의 위치를 나타내는 지도를 제공한다. 그리고 입력된 DB를 바탕으로 예술품들의 행정구역별 수량 및 각 예술품 종류별 수량 등의 통계적 자료를 추출하여 제시하고, 사용자는 입력되어 있는 예술품들에 대한 평가 및 관리 보수 등의 의견을 제시하여 서울시 내의 공공조형예술품에 관한 의사결정에 의견을 제시할 수 있다. 본 연구물의 결과로 기대 할 수 있는 효과는 도시 재생 및 도시 계획 재정립에 있어 사용자 참여 유도 및 참고적 역할을 할 수 있고, 도시 내 조형예술품들에 대한 정보 제공의 기점 역할을 하여, 관광객 유치 및 도시 문화사업의 도움이 될 수 있다.

• The Journal of Information Systems
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• v.23 no.1
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• pp.225-246
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• 2014

With the recent establishment of a ubiquitous environment and the paradigm shift to a smart society, the use of mobile devices, such as smart phones and tablet PCs, has become widespread. Thus, the trend is gradually shifting from using Web-based Instant Messenger to using Mobile-based Instant Messenger. Mobile Instant Messenger refers to a service that allows instant messaging as well as data sending and receiving between individuals with exclusive application programs(mobile Apps), which can be used in portable devices-such as smart phones-with wireless Internet access. Korea's portal sites, telecommunication companies, and even big companies have all rushed into the MIM market to join the competition. The reason so many companies are showing interest in the MIM business is because it is rising as a core platform to substitute portal sites in the mobile society, and MIM is perceived as the best means to attract and secure users. The intention to reuse or use continually was considered an important factor in maintaining a dominant position amidst such fierce competition, and consequently, most research thus far has reflected such thought. However, the frequent or long-term use of a system alone cannot indicate the definite success of the system, nor guarantee its dominant position in the market. On the contrary, MIM dependence, which goes beyond simple repetitive use and indicates a state where users actually or emotionally depend on a specific system, can better explain the user action. However, not much research has been conducted on dependence. The research results showed that lively message, concise message, message responsiveness, and social belonging significantly affected perceived usefulness. Message responsiveness, Link, and social belonging significantly affected flow. Flow significantly affected MIM dependence, and perceived usefulness did not affect MIM dependence. This study has proven that lively message, concise message, message responsiveness, Link, social belonging and perceived usefulness are important antecedents and mediating factors of MIM dependence. Moreover, this study is significant in that it explains the overall process of MIM dependence, and expands on the variety and scope of research that can be applied to MIM-related studies.

• The Korea Journal of Herbology
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• v.36 no.5
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• pp.1-14
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• 2021

Objectives : From January 2020, when the first confirmed case of COVID-19 in Korea, the use of health information using the Internet is expected to increase. It is expected that there will be a significant change in the general public's interest in Korean herbal medicines for health care. Therefore, in this study, we tried to confirm the change in the search trend of Korean herbal medicines after the COVID-19 epidemic. Methods : Using the "Naver DataLab (http://datalab.naver.com)" service of a Korean portal site Naver, search volume was investigated with 606 Korean herbal medicines as keywords. The search period was from January 2020, right after the onset of COVID-19, to June 2021. The search results were sorted by the peak search volume and the total search volume. Results : 'Cheonsangap (천산갑, 穿山甲, Manitis Squama)' was the most searched Korean herbal medicine in the peak search volume and total search volume with least bias. Conclusions : The problem of supply and demand of Korean herbal medicines of high public interest was identified. Broadcasting and media exposure were the factors that had a big impact on the search volume for Korean herbal medicines. As it was confirmed that the search volume for Korean herbal medicines increased rapidly due to media exposure, it is necessary to provide correct information about Korean herbal medicines, improve public awareness, and manage stable supply and demand based on continuous search trend monitoring.

• Journal of Radiation Protection and Research
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• v.44 no.1
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• pp.43-52
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• 2019

Background: The mid-term performance of clinical linear accelerator (LINAC) during volumetric modulated arc therapy (VMAT) treatment period is not performed in clinical practice and usually replaced with one-time plan quality assurance (QA). In this research we aim to monitor daily reproducibility of VMAT delivery from tracking individual leaf movement error and dosimetric error to evaluate the mid-term quality of the machine used. Materials and Methods: First, multileaf collimator (MLC) information was imported into MATLAB program to determine which of the MLC leaves in the leaf bank had the maximum RMS position error (maxRMS). We estimated where the maximum positional errors (maxPE) of the chosen leaf occur along its path length and tracked its daily variations over the entire treatment period. Secondly, picture information of dosimetric error from portal dosimetry was imported into MATLAB where representative high gamma index region (HGR) was determined as HGR with length of > 1 cm and their centers were daily tracked. Results and Discussion: The maxPEs in the brain and tongue cases were distributed broader than in other cases, but all data were found located within ${\pm}0.5mm$. From first day to last day all of five cases show the similar visual pattern of HGRs and Centers of the longest HGRs remained within ${\pm}1mm$ of that in first day. These findings prove excellent mid-term performance of the LINAC used in VMAT treatments over a full course of treatment. Conclusion: Tracking the daily location changes of leaf movement and dosimetric error can be a good indicator of predicting the daily quality like stability and reproducibility of beam delivering in VMAT treatment.

• Journal of the Korean Society for Library and Information Science
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• v.53 no.2
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• pp.159-178
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• 2019

The purpose of the study is to examine the trend in the change of relation between countries (Czech and Korea) through analysis of portal new articles. In order to achieve the purpose, we analyzed news articles about Czech from 1990 to March 31st, 2019. We divided it into 6 periods by every 5 years, reviewed 200 news articles for each period totaling 1,200 news articles, and categorized them into 4 categories by subject (politics, economy, society and culture, and educations). The result of the study showed the subject of society and culture represented the largest proportion of all news articles. We also found that the range of changes in the sub-categories of society and culture occurred most extensively. We concluded the paper with several suggestions that could promote cooperation between Korea and Czech.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.23 no.11
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• pp.1451-1461
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• 2019

DNS spoofing is an attack in which an attacker intervenes in the communication between client and DNS server to deceive DNS server by responding to a fake IP address rather than actual IP address. It is possible to implement a pharming site that hacks user ID and password by duplicating web server's index page and simple web programming. In this paper we have studied web spoofing attack that combines DNS spoofing and pharming site implementation which leads to farming site. We have studied DNS spoofing attack method, procedure and farming site implementation method for portal server of this university. In the case of Kyungsung Portal, bypassing attack and hacking were possible even though the web server was SSL encrypted and secure authentication. Many web servers do not have security measures, and even web servers secured by SSL can be disabled. So it is necessary that these serious risks are to be informed and countermeasures are to be researched.

• Journal of Internet of Things and Convergence
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• v.10 no.2
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• pp.43-50
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• 2024

This manuscript proposes an artificial intelligence-based(AI) energy platform system that efficiently use existing energy than creating new energy than creating new energy sources. To this end, it collects public information data portal and statistics data portal and data emissions, including energy usage and greenhouse gas emissions, including energy consumption and greenhouse gas emissions.In addition, it provides strong security and personal information protection functions to overcome the limit of existing energy platform. Through the built energy platform, improving power supply and user convenience of users and users to contribute to global warming issues.In this paper, the contents to implement the contents of the system, and improvement direction from the future completion and improvement direction.

• Agribusiness and Information Management
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• v.1 no.1
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• pp.63-83
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• 2009

This study was performed to investigate the status of using agricultural information and develope desirable strategy to offer agricultural information for leaf vegetables farmers. 187 farmers are surveyed to collect data. Many farmers get agricultural information through various channel. They satisfied with agricultural information contents, rightness of time but dissatisfied with the easiness of gain, fitness of information relatively. And the mean score of farmer's information needs on agricultural information were higher than that of theoretical mean. relatively high items were new seed information, technology of cultivation, pesticide purchase and prevention, laborer finding, consumer information, the trend of leaf vegetables price, marketing place, government's agricultural policy and laws etc. To make farmers get information easily, we recommend to gather information at one place and provide them on internet portal site composed with information related for paddy rice farmers. To make desirable information service system, farmers should bring up their internet searching ability, and agricultural extension officers in count/city have to make effort to provide useful information more often by various communication methods such as visiting farmers, using internet or e-mail service, pamphlet, and so on.