• 한국인터넷방송통신학회논문지
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• 제10권6호
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• pp.93-98
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• 2010

최근들어 급격하게 스마트폰을 사용하는 사람들이 많아지고, 스마트폰을 이용해서 소셜 네트워크 서비스(SNS)를 이용하는 사용자도 같이 늘어나고 있는 추세이다. 본 논문에서는 안드로이드 기반 근거리 SNS 시스템을 제안 개발한다. 제안 개발된 시스템의 주요한 특징과 기여도는 다음과 같다. 첫째, 제안 개발된 SNS 시스템은 사용자가 블루투스를 이용하여 근거리에 있는 다른 사용자를 주변검색을 하며, 친구추가가 되면 웹/DB로 SNS 서비스를 할 수 있게 스마트폰 안드로이드 기반으로 한다. 둘째, 안드로이드 전체의 기본적인 UI를 변경하지 않는 선에서 제작을 하여 처음 사용하는 사용자들에게도 거부감이 들지 않고, 최대한 직관적이면서 사용하기 쉬운 접근 방법을 가지고 디자인 하였다. 제안된 시스템의 성능평가는 OPTIMUS-Q/ANDROID 2.1을 이용하여 이루어진다. 성능평가 결과 안드로이드 기반 블루투스로 주변검색을 함으로써 근거리에 있는 사용자의 접속 서비스를 효과적으로 지원하였다. 현재 제안된 시스템의 효과적인 성능 향상 지원을 위해서 안드로이드에서 블루투스의 오토페어링 등에 대한 연구가 진행 중에 있다.

• 통합자연과학논문집
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• 제5권4호
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• pp.229-232
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• 2012

The pharmaceutical industry has an ongoing need for new, safe medicines with genuine biomedical effects. Most of the candidate molecules are far from becomes a drug, because of their pharmacokinetic and pharmacodynamic properties. The introduction of bioisostere to improve properties of molecules and to obtain new class of compound is currently increased. Silicon substitution of carbon of existing drugs is an attractive strategy to search a new candidate with improved biological and physicochemical properties. The fundamental differences between carbon and silicon can lead to improved profile of the silicon containing candidate, and could be exploited to get further benefit in drug design process.

• International Journal of Quality Innovation
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• 제5권1호
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• pp.85-109
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• 2004

Supplier quality management (SQM) is considered as a proactive approach in the buyers' perspective to seek for continuous supply quality improvement and collaborative ongoing alliance between buyers and suppliers. Therefore, it is important for the buyers to understand their circumstances for managing their suppliers, and thereby to search for an improved way to rectify managerial deficiencies, if any. This paper aims to identify the critical factors of SQM, and then propose a hierarchical framework which can facilitate the assessment of their SQM performance in the buyers' perspective and also serve as a working tool for managing supply quality performance.

• 생약학회지
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• 제47권2호
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• pp.110-116
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• 2016

As a part of an ongoing search for natural plants with antioxidant compounds by measuring the radical scavenging effect on 1,1-diphenyl-2-picrylhydrazyl (DPPH), a total extract of the aerial parts of Bidens frondosa L. (Compositae) was found to show potent antioxidant activity. Subsequent activity-guided fractionation of the methanolic extract led to the isolation of five compounds, quercetin-3-O-${\beta}$-D-glucopyranoside (1), luteolin-7-O-${\beta}$-D-glucopyranoside (2), 7,8,3',4'-tertrahydroxy-flavanone (3), okanin-4-O-${\beta}$-D-glucopyranoside (4), and okanin (5). Their structures were elucidated by spectroscopic studies. Compounds 3-5 were isolated for the first time from this plant. Among them, compounds 3 and 5 showed the significant radical scavenging effects on DPPH, and compounds 3 and 5 also showed the potent riboflavin and xanthine originated superoxide quenching activities.

• 보건교육건강증진학회지
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• 제28권5호
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• pp.17-34
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• 2011

Objectives: The purposes of this study were to describe comprehensive health promotion policies for university students in Korea and to discuss the implications based on the socio-ecological approaches. Methods: A web-based search was performed to identify empirical programs and literature to develop health promotion policies and strategies in university settings. Results: Five domains for policy development are suggested for comprehensive health promotion policies in universities: evidence-based policy development; establishment of supportive policy through network and partnership; infrastructure of university; systems approach with education, environment, enforcement and policy tailored for universities; and sustainability for policy implementation. Conclusions: For healthy universities and students, government, community, health professionals, organizations and universities are all responsible as main agents for the five domains suggested in this study. Multi-level approaches with political, organizational and environmental changes should be sustained as an ongoing process.

• Advances in aircraft and spacecraft science
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• 제1권2호
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• pp.219-232
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• 2014

This paper reports on an ongoing study investigating the feasibility of using an evolutionary method to develop the rules governing Self-Organised (SO) systems for use in swarms of unmanned aerial vehicles. In general, it is difficult to design swarm systems that follow explicit global behaviour. Unlike optimising a predefined objective function, the solution to the problem is the emergent behaviour in the SO systems which results from simultaneous interactions among agents and between agents and their environment. In this study, evolutionary algorithms are used to investigate their control and effectiveness in synthesising the weighting of different rules on SO emergent behaviour. Both homogeneous swarms and heterogeneous swarms were considered though the results provided are for a case study investigating the simplest problem a homogeneous swarm without mutation. Though simple this study does indicate the potential of the approach.

• 전자통신동향분석
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• 제38권2호
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• pp.56-65
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• 2023

The combination between metaverse and non-fungible token (NFT), which opens up new opportunities for the media industry, raised expectations for a new economic system and business model. Of course, last year, various institutions and researchers continuously introduce representative metaverse services and business strategies such as Roblox, Fortnite, and ZEPETO. However, as 2022 progresses, the reaction to the metaverse is tepid than expected. Search volume on Google has been continuously decreasing. Furthermore, skepticism, regarded as one of the special phenomena caused by the coronavirus disease 2019 pandemic, is expanding since December 2021. Nevertheless, analysis or contemplation of a new business model related to the metaverse, which is still ongoing, is essential for those who must prepare for the future. The reason is that even if without being activated now, advanced preparation can help when various problems arise. In this study, we look at the metaverse and NFT biz models and estimate a picture of the future. In other words, the social and economic problems that may arise when the business model is expanded are summarized, and technical and policy measures are derived as solutions.

• 벤처창업연구
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• 제16권1호
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• pp.87-97
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• 2021

창업과 폐업을 주도하는 기업 활동의 주요 주체(player)인 기업가 연구는 기업연구에서 매우 중요하다. 회사가 경영이 악화되면 경영의 지속, 자산매각과 같은 자율적인 구조조정, 워크아웃, 도산신청 등 다양한 대안 가운데 하나를 선택해야 한다. 기업이 실패하는 경우 기업가들이 부담하는 실패비용을 제대로 파악하여야 사업가들의 사업의욕을 높이기 위한 효과적인 방안을 마련할 수 있다. 본 연구는 기업가가 인식하는 사업종결 시 발생하는 재무적 비용, 사업종결시스템, 심리적 비용이 사업의욕에 미치는 영향력을 분석하였다. 본 연구의 목적을 달성하기 위하여 중소기업을 운영하는 기업인들을 설문대상으로 하였다. 배포한 설문지 중 최종 247개를 대상으로 분석을 실시하였다. 본 연구결과 사업의욕에 영향을 미치는 유의미한 변수는 차입금, 파산제도, 사업중단 의욕으로 나타났다. 현재 기업이 폐업하는 경우 기업가들이 감당하는 비용이 지나치게 높으며, 기업가들의 사업의욕을 높이기 위해서는 사업실패 시에 부담해야 하는 재무적 비용과 심리적 비용을 완화시켜야 한다.

• 한국의류학회지
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• 제23권3호
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• pp.373-384
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• 1999

The purposes of this study were 1) to test the differences between two groups who have high and low purchase of apparel in low-price retailing concerning consumers' beliefs and attitude toward low-prce retailing 2) to identify differences between these two groups in type of information search and use of information sources and 3) to investigate differences between department store and low-price retailing in consumers' satisfaction toward products and purchase frequencies of apparel items and differences between two groups in demographic variables. The data were collected via a self-administeered questionnaire from 474 femail adults in Seoul Korea and analyzed by factor analysis t-test and paired t-test. The results of this study were as follows : First based on a series of t-test and paired t-test. the results showed that those who had a high purchase of apparel in low-price retailing had significantly higher belief scores on all of the five store attributes and a more favorable attitude toward low-price retailing than did those who had low purchase. Second those who had high purchase of apparel in low-price retailing had significantly higher scores on ongoing and prepurchase information search and on use of mass media information and interpersonal information source than did those who had low purchase. Third in case of high purchase consumers of apparel in low-price retailing there were not found significant differences between department store and low-price retailing there were not found significant differences between department store and low-price retailing in purchase frequency on man's and women's casual wear of department stores than low-price retailing. However low purchase consumers of apparel in low-price retailing revealed significantly higher purchase frequency on all of seven apparel items of department stores than low-price retailing. Finally there were significant differences between two groups in demographic variables. The papers discussed theoretical implications as well as manageral implications.

• Genomics & Informatics
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• 제6권3호
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• pp.153-156
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• 2008

Complex diseases such as stroke and cancer have two or more genetic loci and are affected by environmental factors that contribute to the diseases. Due to the complex characteristics of these diseases, identifying candidate genes requires a system-level analysis of the following: gene ontology, pathway, and interactions. A database and user interface, termed StrokeBase, was developed; StrokeBase provides queries that search for pathways, candidate genes, candidate SNPs, and gene networks. The database was developed by using in silico data mining of HGNC, ENSEMBL, STRING, RefSeq, UCSC, GO, HPRD, KEGG, GAD, and OMIM. Forty candidate genes that are associated with cerebrovascular disease were selected by human experts and public databases. The networked cerebrovascular disease gene maps also were developed; these maps describe genegene interactions and biological pathways. We identified 1127 genes, related indirectly to cerebrovascular disease but directly to the etiology of cerebrovascular disease. We found that a protein-protein interaction (PPI) network that was associated with cerebrovascular disease follows the power-law degree distribution that is evident in other biological networks. Not only was in silico data mining utilized, but also 250K Affymetrix SNP chips were utilized in the 320 control/disease association study to generate associated markers that were pertinent to the cerebrovascular disease as a genome-wide search. The associated genes and the genes that were retrieved from the in silico data mining system were compared and analyzed. We developed a well-curated cerebrovascular disease-associated gene network and provided bioinformatic resources to cerebrovascular disease researchers. This cerebrovascular disease network can be used as a frame of systematic genomic research, applicable to other complex diseases. Therefore, the ongoing database efficiently supports medical and genetic research in order to overcome cerebrovascular disease.