• 응용통계연구
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• 제29권7호
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• pp.1173-1183
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• 2016

본 연구에서는 네트워크 가입자들로부터 수집된 악성코드 감염 정보에 기초하여 악성코드 감염에 대한 위험정도를 파악할 수 있는 지수 산출 문제를 다루었다. 계층적 의사결정 방법을 사용하여 여러 악성코드들의 상대적 위험 가중치를 제안하였으며, 이들 가중치를 결합하여 위험도 지수를 산출하였다. 개발된 위험도지수에 대한 시계열 분석 및 통계적 모형 적합을 시도하였으며, 관리도를 통해 정보보호 위험을 예보할 수 있는 지수의 활용성을 살펴보았다.

• 한국인터넷방송통신학회논문지
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• 제14권1호
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• pp.189-193
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• 2014

네트워크 서비스는 로컬서비스와 결합하면서 생활밀착형 서비스로 발전하고 있다. 생활밀착형 서비스는 기존의 모바일 서비스와는 달리, 위치정보와 로컬정보 그리고 소셜 네트워크서비스 정보 등을 모아 개인화된 서비스를 제공할 것으로 예상된다. 여러 정보를 모아 처리하는 과정에서 빅데이터 기술, 클라우드 기술 등이 필요하다. 이미 이에 대한 효율성 높은 알고리즘이 연구되고 있으나 반면, 생활 밀착형 서비스 모델 또는 빅데이터 환경에서의 프라이버시 보호 모델에 대한 연구는 상대적으로 미흡한 편이다. 이 글은 생활밀착형 서비스에 활용될 빅데이터 기술이 야기하는 프라이버시 문제에 대하여 구조혈 중심으로 다룬다.

• 한국ITS학회:학술대회논문집
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• 한국ITS학회 2007년도 제6회 추계학술대회 및 정기총회
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• pp.297-302
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• 2007

• 산업공학
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• 제16권1호
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• pp.70-84
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• 2003

Recently, object-oriented techniques have been used more and more for developments of an information system. But, established object-oriented methodologies are hard to express a business process of various abstract degrees in the analysis level and independent components of the system. They have difficulties in developing a large-scale information system of manufacturing industry such as PDM and CIM. This paper proposes an information system development methodology that imports the object-oriented IDEF0 (OOIDEF0) function model in analysis level. This methodology is made up of requirements gathering, system analysis, system design, and implementation. In requirements gathering level, organization diagram and interview technique are used for input data of OOIDEF0 function model. The OOIDEF0 function model, the interface model and function descriptions are made out in analysis level. Information objects and implementation objects are designed on the basis of the OOIDEF0 function model in design level. The database is built and programming is accomplished in implementation level. In order to prove the consistency and efficiency of the proposed methodology, the PDM system for ship production is modeled and prototyped.

• 한국산학기술학회논문지
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• 제13권8호
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• pp.3680-3686
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• 2012

본 연구에서는 정보 수집을 기반으로 멀티미디어 서비스의 QoS를 효과적으로 지원하기 위한 모니터링 방법을 제시하고자 한다. 모니터링을 통하여 가입자 단말기는 자신의 현재 상태 및 주변 기지국 정보를 수집하고, 기지국은 내부 및 인접한 기지국 모니터링으로 수집된 정보를 통하여, 관련 제어 데이터를 공유하고 이를 종합 분석하여 QoS를 자체적으로 조절/제어하는 방법을 연구한다. 모니터링은 단말기 및 기지국의 상태 정보 변화에 따라 관련 기능의 설정을 동적으로 제어하고, 각각의 기능들이 변화에 적응하여 조정되고 재구성하는 과정을 주고받으면서 각 기능들이 상호 작용하게 된다. 이러한 동작들이 서비스 연속성을 만족시키는 방향으로 이루어진다.

• 정보관리연구
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• 제38권4호
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• pp.166-180
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• 2007

본 논문에서는 직무발명보상제도가 기업의 기술혁신에 얼마나 도움이 된다고 생각하느냐는 질문에 54.0%가 "많은 도움이 된다", 23%가 "기술개발에 중추적인 역할을 한다"라는 결과였다. 직무발명제도상에서 기술혁신이 발생하여 170개 기업들이 기술개발단계, 138개 기업이 아이디어 형성단계로 나타났다. 기술혁신이 기술개발단계와 아이디어 형성단계에서 집중하게 된 이유는 신제품 개발의 첫 단계인 신제품을 아이디어 창출단계에서는 가장 많은 아이디어를 창출하는데 역점을 두어야 하기 때문에 소비자, 경쟁자, 전문가 등의 다양한 원천에서 아이디어를 수집하면서 발명을 착상하게 된 것과 제품화되었을 때의 잠재적 가치가 평가기준으로 활용한다.

• 가정과삶의질연구
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• 제28권2호
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• pp.27-37
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• 2010

The purpose of the study was to analyze the constraints that are normally experienced before moving in the context of the household characteristics of households that had recently moved to newly-built apartments. The data for the analysis was collected through a self-administered questionnaire from July 1, 2008 to August 10, 2008. The sample consisted of 251 households in Ulsan living in an apartment complex who had moved within a year. The data from the sample was analyzed by descriptive statistics, factor analysis, and analysis of variance with Duncan's multiple range tests. The results are as follows. The constraints were categorized into information gathering, attractive housing characteristics, expectations of residential mobility, housing development and policies, and resources. Overall, the constraints did not have a huge impact on the performance of the residential mobility of the sample households. Resources, however, were the most influential factors among the five constraints followed by attractive housing characteristics, information gathering, etc. The constraints varied based on the demographic characteristics, such as the household size, duration of marriage, age of the household head, and the socio-economic characteristics, such as the education level of the household head, household income, and the number of mobility. As the number of family members increased, the age of the household head went up, or the level of education went down, the constraints on information gathering were affected in terms of performing residential mobility. Households with a middle aged head with a professional occupation were more constrained by the attractive characteristics of the housing. The impact of the resources related constraints was significantly different based on the number of family members, marriage duration, and the household head's age and occupation, and the number of mobility.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제5권2호
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• pp.247-268
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• 2011

Due to the application-specific nature of wireless sensor networks, the sensitivity to such a requirement as data reporting interval varies according to the type of application. Such considerations require an application-specific, parameter tuning paradigm allowing us to maximize energy conservation prolonging the operational network lifetime. In this paper, we propose a reporting interval adaptive, sensor control platform for energy-saving data gathering in wireless sensor networks. The ultimate goal is to extend the network lifetime by providing sensors with high adaptability to application-dependent or time-varying, reporting interval requirements. The proposed sensor control platform is based upon a two phase clustering (TPC) scheme which constructs two types of links within each cluster - namely, direct link and relay link. The direct links are used for control and time-critical, sensed data forwarding while the relay links are used only for multi-hop data reporting. Sensors opportunistically use the energy-saving relay link depending on the user reporting, interval constraint. We present factors that should be considered in deciding the total number of relay links and how sensors are scheduled for sensed data forwarding within a cluster for a given reporting interval and link quality. Simulation and implementation studies demonstrate that the proposed sensor control platform can help individual sensors save a significant amount of energy in reporting data, particularly in dense sensor networks. Such saving can be realized by the adaptability of the sensor to the reporting interval requirements.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2010년도 한국컴퓨터종합학술대회논문집 Vol.37 No.1(A)
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• pp.301-302
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• 2010

• 한국패류학회지
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• 제31권1호
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• pp.43-48
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• 2015

Oxygen isotope ratios (${\delta}^{18}O$) of three Pacific oyster (Crassostrea gigas) specimens from the Neolithic Yeondae-do shell midden site, Tongyeong, Korea, were analyzed to determine the seasonality of shellfish gathering and site occupation. Oxygen isotope samples were taken from the left valve hinge sections of the specimens. Oxygen isotope values ranged between -0.1 ‰ and -2.4 ‰, between -0.2 ‰ and -2.9 ‰, and between 0.3 ‰ and -2.8 ‰ in oyster specimen #one, #two and #three, respectively. The isotope profiles showed seasonal temperature cycles, providing information related to the seasonality of shellfish gathering and site occupation. Hinge-edge oxygen isotope values of the specimens showed decreasing trends after passing through maximum values (winter), indicating that they formed during spring. Thus it can be assumed that during spring season, oysters were gathered and the site was occupied.