• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.05a
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• pp.230-232
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• 2011

Owing to the advent of digital devices which equipped with GPS, such as smartphone and tablet pc, a number of LBSNS applications have been released and even SNS applications serve various Location-Based Services. In twitter's case, the news of interesting area is provided to user not by being subscribed them automatically, but by being searched on web-site. This paper describes the system designed for users want to subscribe the local news without procedure like searching using operators. This system uses PBSM(Partition Based Spatial-Merge Join) which has no index for batch processing and against a massive query. The results from Spatial Join are stored in Materialized View then provided to user.

• Journal of the Korean Society of Marine Environment & Safety
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• v.14 no.1
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• pp.77-82
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• 2008

Recently, fatigue related to marine accidents was recognized to be very important contribution factor when marine accidents such as collision, aground, fire, etc. were investigated Many studies concerned about fatigue factors related to human error can be found. In this study, the analysis and examination of USCG Fatigue Investigation Program were carried out in order to investigate marine accidents happened in Korean waters. The Fatigue Investigation Program was established on the MAIFA(Marine Accident Investigators Forum in Asia) web site. Finally, the application plan of the program was discussed.

• The Journal of Engineering Research
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• v.3 no.1
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• pp.107-116
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• 1998

Video data are retrieved and stored in various compressed forms according to their characteristics. In this paper, we present a generic data model that captures the structure of a video document and that provides a means for indexing a video stream. Using this model, we design and implement CVIMS (the MPEG-2 Compressed Video Information Management System) to store and retrieve video documents. CVIMS extracts I-frames from MPEG-2 TS files, selects key-frames from the I-frames, and stores in database the index information such as thumbnails, captions, and picture descriptors of the key-frames. And, CVIMS retrieves MPEG-2 video data using the thumbnails of key-frames and various labels of queries. And also, the system is accessible by a web interface.

• Proceedings of the Korean Information Science Society Conference
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• 2006.06a
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• pp.232-234
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• 2006

인터넷 기술의 발달과 디지털 카메라와 같은 디지털 미디어 생산 장비의 발달로 WWW에 이미지 데이터의 양이 급격하게 늘어나면서 웹 이미지에 대한 효율적인 검색에 대한 요구가 증가하고 있다. 본 논문에서는 사용자의 다양한 검색 요구를 만족시킬 수 있도록 기존의 텍스트 기반의 검색과 시각 정보 기반의 검색을 병합하여 수행할 수 있는 웹 이미지 검색 시스템을 설계하고 구현한다. 제안한 웹 이미지 검색 시스템은 웹 이미지 수집 및 검색정보 추출 도구. 검색 서버. 그리고 검색 클라이언트로 구성된다. 웹 이미지 수집 및 검색 정보 추출 도구는 웹에서 이미지를 수집하여 이미지가 속해있는 웹 문서 구조를 이용하여 적절한 키워드를 선택하며 시각 정보 기반의 검색을 지원하기 위해 MPEG-7 시각 정보 기술자(1)를 추출한다. 빠른 검색을 위해 추출된 텍스트 정보는 상용 데이터베이스에 저장되며 MPEG-7 시각 정보 기술자는 고차원 데이터 색인 방법인 HBI (Hierarchical Bitmap Index)(2)를 사용하여 색인 정보를 만들어 사용한다. 검색 클라이언트는 사용자가 각 검색 요소에 가중치를 부여하여 검색 할 수 있도록 하며 원하는 검색 결과를 얻을 때까지 반복하여 검색할 수 있는 연관 피드백 과정도 포함한다.

• Agribusiness and Information Management
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• v.11 no.1
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• pp.1-9
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• 2019

This research intends to propose the methodology for analyzing the current trends of agriculture, which directly connects to the survival of the nation, and through this methodology, identify the agricultural trend of Korea. Based on the relationship between three types of data - policy reports, academic articles, and news articles - the research deducts the major issues stored by each data through LDA, the representative topic modeling method. By comparing and analyzing the LDA results deducted from each data source, this study intends to identify the implications regarding the current agricultural trends of Korea. This methodology can be utilized in analyzing industrial trends other than agricultural ones. To go on further, it can also be used as a basic resource for contemplation on potential areas in the future through insight on the current situation. database of the profitability of a total of 180 crop types by analyzing Rural Development Administration's survey of agricultural products income of 115 crop types, small land profitability index survey of 53 crop types, and Statistics Korea's survey of production costs of 12 crop types. Furthermore, this research presents the result and developmental process of a web-based crop introduction decision support system that provides overseas cases of new crop introduction support programs, as well as databases of outstanding business success cases of each crop type researched by agricultural institutions.

• Journal of Information Science Theory and Practice
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• v.2 no.3
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• pp.40-54
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• 2014

This paper attempts to highlight quantitatively the growth and development of literature in the field of ecology in terms of publication output using the resource Web of Science$^{(R)}$. The focus of this analysis was to study the literature on ecology published in three journals, viz., Ecology Letters, Trends in Ecology & Evolution, and Annual Review of Ecology Evolution and Systematics. 2946 records were retrieved for 10 years (2003-2012). The study revealed that multiple authorship in the field with collaborations of two (30.31%) and three authors (19.89%) was dominant. The Degree of collaboration, Collaborative coefficient, and Collaborative index were calculated and the applicability of Lotka's law was tested. The study identified five-year patterns in research trends, using the three studied journals, to see if the subjects of focus changed within a decade. The most productive institution was University Calif. Davis, USA, followed by University Calif. Santa Barbara, USA, and University Queensland, Australia, and the most productive countries were the USA followed by UK and Canada.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.285-290
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• 2008

Ministry of Land, Transportation and Marine Affairs has implemented Construction CALS project for improving informatization level of construction industry and for making construction production system efficient. Construction CALS project has been implemented since 1998, however, there has been no attempt to measure how high the informatization level of Construction CALS is. This study measured the informatization level of Construction CALS by using the evaluation index proposed in the former studies. For measuring the level, this study made questions and selected samples, did survey, and analyzed the survey results. According to the results, Construction CALS is excellent for the fast rehabilitation of system errors, the web-base environment of system, the application of standard classification system, and the development of information strategic plan. This study will contribute to find out the informatization level of Construction CALS precisely.

• Research in Community and Public Health Nursing
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• v.24 no.3
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• pp.282-291
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• 2013

Purpose: The purpose of this study was to identify the Clusters of health promoting schools in middle and high schools for the Korean Youth Risk Behaviors Web-based Survey. Methods: The tool of health promoting school was developed based on a framework for action for health promoting schools in World Health Organization and Schools Health Index for middle and high schools in the United States by 2 professionals and 2 health teachers and revised as a result of the preliminary study. Data were collected with a questionnaire from teachers who attended the conference run by Korean Centers for Communicable Disease Control and Prevention in 2009. The data of 363 schools were analyzed using descriptive analysis, t-test, and ANOVA. Results: As a result of comparing the scores of health promoting schools, three Clusters were identified. The Clusters differed significantly in presence of health teacher, location, and type of schools (p<.05). Conclusion: These results are a good reference in developing tailored strategies for health promoting schools, which will help improve health-promoting schools.

• Journal of Information Technology Applications and Management
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• v.14 no.3
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• pp.95-113
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• 2007

To minimize IT operational risks and the opportunity cost for lost business hours. it is necessary to have preparedness in advance and mitigation activities for minimization of a loss due to the business discontinuity. There are few cases that banks have a policy on systematic management, system recovery and protection activities against system failure. and most developers and system administrators response based on their experience and the instinct. This article focuses on the mitigation model development for minimizing the incidents of disk unit in IT operational risks. The model will be represented by a network model which is composed of the three items as following: (1) the risk factors(causes, attributes and indicators) of IT operational risk. (2) a periodic time interval through an analysis of historical data. (3) an index or an operational regulations related to the examination of causes of an operational risk. This article will be helpful when enterprise needs to hierarchically analyze risk factors from various fields of IT(information security, information telecommunication, web application servers and so on) and develop a mitigation model. and it will also contribute to the reduction of operational risks on information systems.

• Science of Emotion and Sensibility
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• v.7 no.2
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• pp.133-140
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• 2004

A large number of indices are produced from human sensibility ergonomic data, which are accumulated by the project "Study on the Development of Web-Based Database System of Human Sensibility and its Support". Since the research in this field will be increased rapidly, it is necessary to automate the index processing of human sensibility ergonomic data. From the similarity between indexation and summarization, we propose the automation of this process. In this paper, we study on extraction of keywords, information types and expression features that are considered as basic elements of following techniques for automatic summarization: classification of documents, extraction of information types and linguistic features. This study can be applied to automatic summarization system and knowledge management system in the domain of human sensibility ergonomics.rgonomics.