• Proceedings of the Korea Information Processing Society Conference
• /
• 2016.04a
• /
• pp.461-463
• /
• 2016

Information security and preservation of customer's data privacy are key factors for further wide spread adoption of microgrid (MG) technology. However, strong coupling between the operation cost of multi-microgrid (MMG) system and privacy of customer data makes it more challenging. A nested energy management system (EMS) has been proposed in this paper. The surplus/shortage information from the inner level MGs is included in processing the optimal operation of outer level MGs. This type of optimization ensures a layered privacy-preservation to customer at each MG level. The proposed EMS architecture is a better trade-off architecture between the operation cost of the MMG system and customer privacy-preservation at each level of MG.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2023.11a
• /
• pp.165-166
• /
• 2023

Construction inspection and monitoring are key activities in construction projects. Automation of inspection tasks improves the limitations and inefficiencies of manual construction inspections, enabling systematic and consistent construction inspections. In this paper, an RTSP (Real-Time Streaming Protocol) system is used to remotely manage and supervise the construction site without having to visit the construction site by deploying a robot on site on behalf of four construction stakeholders (owner, supervisor, constructor, and designer). I would like to propose. The proposed system can contribute to identifying and monitoring the process process and work results at the construction site in real time.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2009.05b
• /
• pp.199-202
• /
• 2009

Turn-key and CMF(CM for Fee) have been selected as procurement paths of large public projects in Korea. However, recently, researches and discussions on CMR(CM at Risk) have been popular as the Korean government seeks for alternative procurement paths to enhance the performance. In the CMR projects, the part who is responsible for construction management should predict and control the potential risks for guaranteeing benefits. In this research, CMR projects in which a general contractor plays the role as CMr is mainly analyzed. We give attentions to risk management during construction process given that subcontractors, main parts in this phase, work in various ways and thus more chances for faults exist. In this case, CMr manages risks to control the procedure of project. So, potential risk factors can constitute the database, and that database can be matched to following activity. And construction manager can forecast measures of risk using the result of matching. This chain of activities increase efficiency in roles of CMr on CMR(CM at Risk). Furthermore this study will propose one of the solution of Construction Management Module.

• Proceedings of the Korean Society of Crop Science Conference
• /
• 2022.10a
• /
• pp.58-58
• /
• 2022

With the development of advanced technology, automation of agricultural work is spreading. In association with the 4th industrial revolution-based technology, research on field smart farm technology is being actively conducted. A state-of-the-art unmanned automated agricultural production demonstration complex was established in Naju-si, Jeollanam-do. For the operation of the demonstration area platform, it is necessary to build a sophisticated, advanced, and intelligent field smart farming model. For the operation of the unmanned automated agricultural production demonstration area platform, we are building data on the growth of soybean for smart cultivated crops and conducting research to determine the optimal time for agricultural work. In order to operate an unmanned automation platform, data is collected to discover digital factors for water management immediately after planting, water management during the growing season, and determination of harvest time. A subsurface drip irrigation system was established for smart water management. Irrigation was carried out when the soil moisture was less than 20%. For effective water management, soil moisture was measured at the surface, 15cm, and 30cm depth. Vegetation indices were collected using drones to find key factors in soybean production prediction. In addition, major growth characteristics such as stem length, number of branches, number of nodes on the main stem, leaf area index, and dry weight were investigated. By discovering digital factors for effective decision-making through data construction, it is expected to greatly enhance the efficiency of the operation of the unmanned automated agricultural production demonstration area.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 2000.10a
• /
• pp.189-189
• /
• 2000

본 연구에서는 기업의 성과측정시스템을 평가하고 성과측정관행의 성숙도를 진단하는 방법을 제시하고 이를 토대로 우리나라 서비스 기업 두 곳을 선정하여 적용 연구를 수행하였다. 구체적으로 K병원과 A항공사의 경영층과의 면담을 통하여 각 기업에 적합한 성과측정시스템의 틀(framework)을 균형성과표(balanced scorecard)를 기초로 구현하고 다양한 성과차원의 주요성과지표들(KPIs: key performance indicators)을 기업이 추구하는 전략과 부합할 수 있도록 인과관계로 연계하였다. 그리고 구성원들을 대상으로 실시한 구조화된 설문조사를 통하여 각 사례기업의 성과측정시스템의 적합도를 alignment analysis, congruence analysis, consensus analysis, confusion analysis 등 네 가지 차원의 차이분석(gap analyses)을 이용하여 평가하고, 그들의 현행 성과측정관행의 성숙도를 진단하였다.

• Proceedings of the KIEE Conference
• /
• 2007.11b
• /
• pp.26-28
• /
• 2007

To estimate reasonable load factor of power system both supply side and demand side of views should be considered. In the case of this study the demand side is considered and it is supposed that load curves depends on the load factor. The key point of this study is that the cost of demand-side management program per kW and/or kWh should be calculated.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 1994.04a
• /
• pp.344-354
• /
• 1994

In the development of executive information systems (EIS) the selection of an appropriate software package as a system building tool is regarded as a key technology. This paper attempts to shed some light on the evolving field of EIS software packages and provides a helpful Guideline for selecting the most suitable product by addressing significant considerations. A framework is presented that includes a six-step evaluation process: need analysis, team building, vendor survey, identification of decision criteria, and building an evaluation model and its verification. The major evaluation criteria of the full-featured software include: special functionality, reporting, graphics. decision support capability user friendliness, general functionality physical requirements, communication linkage, vendor support, cost related factors, performance, and documentation capability. An illustrative model using the analytic hierarchy process (AHP) method is also discussed to prove the appropriateness of our approach.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 2000.04a
• /
• pp.5-8
• /
• 2000

Vehicle travel time (empty travel time pius loaded travel time) is a key parameter for designing AGV-based material handling systems. Especially, the determination of empty vehicle travel time is difficult because of the stochastic nature of the empty vehicle locations. This paper presents a method to estimate vehicle travel times for AGV-based material transport systems. The model considers probabilistic aspects for the travel time and vehicle location under random vehicle selection rule and nearest vehicle selection rule. The estimation of empty travel time is of major effort. Simulation experiments are used to verify the proposed travel time model, and the simulation results show that the presented model provides reasonable travel time estimations.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 2000.04a
• /
• pp.653-656
• /
• 2000

본 연구에서는 정보기술 및 시스템이 제조기업의 경영성과에 미치는 영향을 평가하기 위해 사전평가, 과정평가, 사후평가의 3단계 성과평가모델을 제안하고 특히, 사후평가에서는 BSC(Balanced Scorecard)의 4가지 관점인 재무, 내부 프로세스 평가영역에 대해 구매, 설계, 생산, 물류, 판매, 서비스, 연구/개발, 환경의 8가지 핵심 업무 영역으로 구분하고, 조직(학습 및 성장), 고객 평가영역에 대해서는 기업전체 또는 각 단위 사업부문별 평가를 바탕으로 각 영역별 KPI(Key Performance Index)와 KPI 영향도를 측정한다. 이러한 평가모델을 통해 시스템 도입과 활용의 전 과정을 고려하여 시스템이 업무 영역간의 재무적, 비재무적 성과에 미치는 영향을 분석할 수 있다.

• Proceedings of the Korea Information Assurance Society Conference
• /
• 2004.05a
• /
• pp.283-288
• /
• 2004

인터넷의 발전과 멀티미디어 인프라의 성장으로 방대한 양과, 다양한 종류의 디지털 데이터들이 제작, 유통되고 있다. 디지털 컨텐츠는 기존 아날로그 컨텐츠와 비교 생성, 가공, 유통, 분배등의 측면에서 많은 장점을 갖는 반면, 원본과 동일한 복사물을 쉽게 생성할 수 있는 특징 때문에 디지털 창작물에 대한 저작권 보호가 중요시된다. 본 논문은 이미 유선 환경에서 디지털 컨텐츠 보호 기술로 각광 받고 있는 DRM(Digital Rights Management)을 토대로 무선 환경에서 디지털 컨텐츠의 보안을 위한 Mobile DRM (MDRM) 에 대한 설계를 목적으로 한다 설계되어진 MDRM은 Mobile 환경을 고려 키 교환 및 컨텐츠 암/복호 시 발생하는 부하를 줄이고 컨텐츠의 불법적인 유포 방지를 위한 SDMS(Secret-Key Distributed Management System : 비밀키 분산 관리 시스템)기술을 이용한다.