• Journal of Korean Society of Transportation
• /
• v.30 no.3
• /
• pp.57-70
• /
• 2012

Variable speed limit(VSL) is a useful speed management tool for alleviating traffic congestion and enhancing traffic safety. The purpose of this study is to identify promising freeway segments for safety enhancement through VSL operations. An ordered probit model was adopted to capture factors affecting freeway crash severity that can be used to support decision making for selecting the promising segments. Pseudo elasticity and marginal effects, which are outcomes of the ordered probit analysis, were used to determine priority of promising segments for traffic safety. The results of this study would be useful in installing VSL systems and developing traffic control and operations strategies in practice.

• Proceedings of the Korean Society of Propulsion Engineers Conference
• /
• 2017.05a
• /
• pp.353-357
• /
• 2017

The research trends and major technologies of the divert attitude control system(DACS), which is the core of the anti-missile system, are described. The operating concept and characteristics according to the fuel used are summarized. The characteristics of typical weapon system applying solid(SM3 Block IB/IIA) and liquid(THAAD) fuels were discussed. In the future, it will be necessary to study various types of DACS in the strategic concept of the defense weapon system.

• Journal of Korea Society of Industrial Information Systems
• /
• v.26 no.6
• /
• pp.135-154
• /
• 2021

This paper compares and analyzes the domestic OTT services to access their success factors, strategies and examine the domestic OTT leader's wavve's unique differentiation strategy. It is a comparative study of the top five market share services based on the operator and content's key success factors criteria, revenue structure, personalization, interactive media and cooperation. As a result, the common success factors were contents that reflected the characteristics of the operators, hybrid VOD, hybrid filtering, real-time participation interaction, alliances between the same and heterogeneous industries, and utilization of existing business areas. In addition, the study confirmed that it expanded the scope of the project and operated the contents efficiently by introducing one or more business strategies. wavve has been widely validated with its content, while B2C has long-term benefits and overseas use services, and B2B has a systematic use system, differentiating itself from other services. This paper can be the foundation for identifying the strengths and differences of each service on 2021, entering the domestic OTT industry, and establishing competitive strategies.

• Journal of the Korea Society of Computer and Information
• /
• v.11 no.1 s.39
• /
• pp.203-222
• /
• 2006

This study proposes the methodology of analyzing the expected performance of the Integrated Computing Environment(ICE) on the assumption that the ICE of the agencies and the affiliated organizations under Ministry of Culture and Tourism is constructed and operated. The main objectives of the study are as follows : 1) deriving the performance criteria divided into the operational expected value and the strategic expected value of constructing and operating the ICE for Culture and Tourism informatization, 2) proposing the ways of extracting the detailed criteria for four performance areas(the degree of jnformatization efficiency, the degree of public service, the innovation and development of IS organization, the culture and tourism value creation) to evaluate the operational expected value based on the BSC(Balanced Scorecard) Perspective by using the CSF(Critical Success Factors) methodology, and 3) developing the detailed performance criteria and measures for the economic evaluation of the informatization efficiency from the TCO(Total Cost of Ownership) perspective and suggesting the practical evaluation method by applying them to the case of Culture and Tourism informatization.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2008.05a
• /
• pp.1560-1564
• /
• 2008

1999년 수립된 국가수자원관리종합정보시스템 기본계획에서 제시된 목표시스템과 비교를 통하여 현재 운영되고 있는 국가수자원관리종합정보시스템(WAMIS)과 물관리정보유통시스템(WINS), 통합홍수관리시스템에 수문정보관리시스템, 하천정보관리시스템, 실시간하천수관리시스템, 수자원 계획수립 업무지원시스템, 정책결정지원시스템을 추가하여 8개 시스템의 통합 데이터 모형으로 구성된 수자원정보화의 기본모형을 수립하였다. 향후 목표로 하고 있는 8개 시스템의 통합 데이터 모형을 제시하였고, 각각의 개별 시스템에 대한 목적, 대상업무, 대상업무와 자료와의 관계, 시스템 모형 및 데이터 모형 등을 수립하여 제시하였으며, 이를 달성하기 위한 세부 추진방향을 도출하였다. 수자원정보화에 대한 목표시스템을 구축함으로써 수자원 관련 정보화의 업무기능과 분야별 정보화 시스템의 기능이 제시될 수 있으며, 이를 토대로 정보화 관련 국가 수자원 정책을 지속적이고 체계적으로 추진해 나갈 수 있을 것으로 판단된다.

• Proceedings of the Safety Management and Science Conference
• /
• 2012.11a
• /
• pp.343-353
• /
• 2012

오늘날 경영환경은 운송수단의 발달과 정보통신 혁명 등으로 기업들의 급격한 글로벌화가 진행되고 있다. 글로벌한 환경속에서 다양한 고객의 요구를 대응하기 위해 다양한 상품과 서비스를 원하는 시간에 정확하고 합리적인 비용으로 고객에게 전달하기 위하여 많은 물류기업들이 끊임없는 노력을 경주하고 있다. 물류기업은 물류경쟁력을 확보하기 위해 여러 화주의 물량을 공동으로 보관 및 운송 서비스를 수행하는 물류공동화를 수행하거나 관련 물류기업간의 전문화를 통한 다양한 협업 모델을 도입하여 적용하고 있다. 그러나 IT부문의 관점에서 보면 일부 국제물류 등의 수출입 EDI 시스템을 공동으로 활용하거나 운송시스템을 대기업의 서비스사업자를 중심으로 시스템을 공유하는 것을 제외하며 IT시스템 관점에서의 협업 또는 IT공동화 체계는 거의 없는 실정이며, 오히려 물류기업간의 경쟁이 심화되면서 물류기업간의 상호 정보유출 등을 우려하여 매우 폐쇄적으로 운영하고 있는 실정이나 상대적으로 중소물류기업의 입장에서 보면 기업의 영세성 등으로 인해 거의 IT부문에 대한 투자나 활용이 거의 진행되지 못하는 문제점 또한 발생하고 있다. IT시스템을 공동으로 구축 및 활용함으로써 상호간의 비용 절감하고 IT시스템의 전략적 활용을 극대화 하기 위한 방안으로서 물류기업에서 IT공동화의 도입 방안을 제시하고자 한다. 먼저 금융권의 IT공동화 사례 및 국내외 물류관련 사례를 살펴보고, 물류IT공동화의 유사개념인 제4자 물류와 소프트웨어를 필요한 만큼을 필요한 시점에 서비스를 활용할 수 있는 모델인 ASP, SaaS, 클라우드 서비스 등을 비교함으로써 물류IT공동화의 도입 방안과 활용 방안을 제시 하였다.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.42 no.5
• /
• pp.659-669
• /
• 2022

Recently, parking problems have repeatedly occurred not only in the residential areas of the old town, but in detached residential areas, neighborhood living facilities, and commercial areas of the planned New Town. This study suggests a strategy to minimize parking problems before constructing a New Town by reviewing these parking problems at the new city district planning stage. Parking problems can be divided into supply-demand and non-supply-based, and the solution strategy is reviewed in terms of supply and operation. The procedure for applying the solution strategy is proposed according to the effectiveness and ease of application.First, this paper suggests the PAZ (Parking Analysis Zone) as the basic analysis unit. Second, the supply-based parking problem in the concerned area based on the land use plan of Hanam Gyosan is reviewed. Last, solutions to a parking problem for each PAZ are presented.

• Journal of Digital Convergence
• /
• v.12 no.11
• /
• pp.159-169
• /
• 2014

I Bank, which is domestic one, has implemented a performance management system based on the balanced scorecards (BSC). The purpose of this study is to understand the status and seek improvements of the performance management system of the bank. To achieve the purpose, this paper makes study about the earlier researches and does empirical study based on the questionnaire survey analysis. After figuring out issues, this paper proposes improvements to operate the performance management system using BSC more properly. The Journal of Digital Policy & Management. This space is for the abstract of your study in English.

• Korean Journal of Cognitive Science
• /
• v.2 no.2
• /
• pp.359-403
• /
• 1990

This paper introduces a blackboard system which extracts imbedded road and building structures irom aerial photograph images. The role of three major component(blackboard, knowledge source, and control module)in blackboard system will be illustrated in terms of knowledge representation and control strategies. The hypothesis on a blackboard will be organized in a hierarchical form, the knowledge sources which generate hypothesis and verify them will be shown in detail, and the control module will describe how the knowledge sources can dervie solutions. Especially this paper shows that searching image strutures can be greatly simplified by the use of a mapping image.

• Spatial Information Research
• /
• v.17 no.1
• /
• pp.15-23
• /
• 2009

For the development and management of u-City(ubiquitous city), Ubiquitous City Construction Law was enacted(March 3, 2008) to form the legal basis of u-City plan, construction and managements afterwards. Among u-City elements, the u-City Management Center has its own meaning and importance in roles which are crucial to the u-City developments, and its legal establishment is one of the core u-City realization factors. In spite of its crucial position for u-City, the legal arrangement of its basis concept, physical/systematic structures, and managerial finance sources and their standardizations are very immature. Therefore, the purpose of this study is to analyse its overall problem issues and then to suggest the basic directions and enforcement strategies to form its legal basis.