• 융합보안논문지
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• 제21권1호
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• pp.3-7
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• 2021

양자 역학을 기반으로 하는 양자암호통신에서는 각각의 정보를 개별적인 광자에 실어 전송하기 때문에 일부만 도청하는 것이 기본적으로 불가능하며, 침입자가 광자를 불법적으로 가로채 수신자에게 재전송을 하여도 양자 복제 불가능성 원리에 의해 같은 정보를 광자에 실어 보내는 것이 불가능하다. 한편 네트워크 기반 다양한 서비스의 폭발적 증대와 함께 해당 서비스의 보안성 보장이 필수적으로 요구되면서 양자암호 통신망의 구축 및 관련 서비스가 다양한 형태로 추진되고 있다. 그러나 양자키 분배(QKD: Quantum Key Distribution) 기술의 발전과는 별개로 이를 활용한 네트워크 구축 및 다양한 양자암호 기반 서비스 제공 방안에 관해서는 많은 연구가 필요한 상태이다. 본 논문에서는 양자암호 장치를 기반으로, 다양한 양자암호 통신망 장비 간에 양자키를 전달하고 암호화된 전송환경 구현을 위한 통합 데이터 구조를 제안하였다.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2018년도 전력전자학술대회
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• pp.380-381
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• 2018

Under-voltage and over-voltage are the big problems in submarine distribution system. To solve that problems, integrated PV with voltage compensation method is proposed in this paper. This paper describes a simple method for controlling the series connection converter while the shunt connection operates as a back-up for sensitive load and verified by the PSIM software.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 1999년도 가을 학술발표회 논문집
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• pp.343-350
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• 1999

This study introduce how distributed object technology can be applied effectively to use in a integrated structural design systems environment with the rapid increasement in the use of network technology. The architecture and management models of the developed systems are described by the CORBA(Com mon Object Request Broke Architecture) distribution standard and objects in Java language. The proposed system can be used for communicating with data between remote designers, regardless of the H/W or S/W platforms they use. Introduction of distributed objects methodologies to a Integrated structural design systems provide advanced levels of integration in structural design environment.

• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2001년도 춘계학술대회 논문집
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• pp.192-196
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• 2001

These days, most of electric power facilities need high stability. Therefore integrated system has been required to monitor and control electronic power distribution system in fields at all times when the interruption of electric power has occurred. To construct this system, unit that convert and process the input signal from fields needed. And for control and monitoring from remote place MMI software is required. Lastly network equipments are required for real-time communications. So, in this paper, units for control and monitoring of emergency power generator and for electric power monitoring in normal electric power and interruption of electric power are developed. Also integrated remote system for monitoring in remote is developed.

• The Journal of Asian Finance, Economics and Business
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• 제5권3호
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• pp.195-206
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• 2018

Paying close attention to those new to an organization, whether fresh or experienced, whose primary interest is in (re)socialization, the current study intends to (1) further the concept of mentoring from a bilateral relationship to a community and culture fostered by developmental networks, (2) propose an integrated conceptual framework for organizational socialization, and (3) suggest implications for practice and future research. This study reviews, analyzes, and integrates research assets and subsequently re-conceptualizes the aggregate information as valid propositions and a conceptual framework. The findings include (1) 11 propositions regarding the relationships among network characteristics (embeddedness, diversity), developmental functions (career support, psychosocial support, and role modeling), and socialization outcomes (learning and attitudinal outcomes); and (2) an integrated conceptual framework that depicts a comprehensive mechanism through which developmental networks conduce to organizational socialization of newcomers. Implications are that developmental networking must be an individual's fundamental competency and an essential part of organizational onboarding processes, and imperative for both members' career development and innovative organizational culture. By integrating research assets on the developmental phenomenon into conceptualizations, this study furthers the concept of mentoring to organizational culture and stimulates a substantive discourse for theory-building towards organizational socialization from the developmental network perspective.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.395-398
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• 2011

This paper introduces stochastic cash-flow modeling integrated with simulation based scheduling. The system makes use of CPM schedule data exported from commercial scheduling software, computes the best fit probability distribution functions (PDFs) of historical activity durations, assigns the PDFs identified to respective activities, simulates the schedule network, computes the deterministic and stochastic project cash-flows, plots the corresponding cash flow diagrams, and estimates the best fit PDFs of overdraft and net profit of a project. It analyzes the effect of different distributions of activity durations on the distribution of overdrafts and net profits, and improves reliability compared to deterministic cash flow analysis.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제6권1호
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• pp.379-394
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• 2012

The ever-increasing demand for H.264 scalable video coding (H.264/SVC) distribution motivates researchers to devise ways to enhance the quality of video delivered on the Internet. Furthermore, researchers and practitioners in general depend on computer simulators to analyze or evaluate their designed network architecture or proposed protocols. Therefore, a complete toolset, which is called myEvalSVC, for evaluating the delivered quality of H.264/SVC transmissions in a simulated environment is proposed to help the network and video coding research communities. The toolset is based on the H.264 Scalable Video coding streaming Evaluation Framework (SVEF) and extended to connect to the NS2 simulator. With this combination, people who work on video coding can simulate the effects of a more realistic network on video sequences resulting from their coding schemes, while people who work on network technology can evaluate the impact of real video streams on the proposed network architecture or protocols. To demonstrate the usefulness of the proposed new toolset, examples of H.264/SVC transmissions over 802.11 and 802.11e are provided.

• 한국ITS학회 논문지
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• 제14권6호
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• pp.37-49
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• 2015

Space Syntax에서 개별링크의 통합도가 크면 네트워크에서 접근이 편리함을 나타낸다. 보행자가 통합도가 높은 링크들의 연결성을 경험하도록 보행로를 설계하거나 집적도가 높은 토지이용을 유도하는 것이 타당하다. 보행자 통행배정모형은 보행수요(보행자)의 불편도(통행거리 및 시간) 등을 최소화하는 경로선택을 반영한다. 이는 보행자의 불편을 최소화하는 실제 통행패턴을 제시한다. 본 연구는 Space Syntax와 보행자 통행배정모형을 통합하는 방안을 제시하는데 목적이 있다. 인천시 부평역을 대상으로 통합모형의 유효성을 검증하는 실증분석을 실시하였다. 분석결과 부평역 주변은 통합도가 매우 높게 나타나나 보행전용구역인 역 북부지역은 상대적으로 통합도가 낮게 나타났다. 모형의 구조는 통합도가 높은 지역에 실제 이동수요를 반영하여 통합도가 적합하게 유지되는지 설명이 가능하다. 통합모형은 Space Syntax의 네트워크에 대한 가시거리를 나타내는 축선도와 건물과 도로로 구획된 링크를 결합하는 방식과 보행자 통행배정모형의 기종점의 유사경로를 파악하여 균일 배정하는 방안을 도입한다. 제안된 모형은 보행개선지역 및 사업의 사전/사후평가 등에 활용이 가능할 것으로 기대된다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2009년도 제40회 하계학술대회
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• pp.95_96
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• 2009

In this paper, a new algorithm of Integrated Volt/Var Control (IVVC) is proposed using Volt/Var control for the Distribution Automation System (DAS) based on the modeling of the distributed load and the distributed current. In the proposed, the load flow based on the modeling of the distributed load with Distributed Generation and the distributed current are estimated from constants of four terminals using the measurement of the current and power factor from a Feeder Remote Terminal Unit (FRTU). For Integrated Volt/Var Control (IVVC), the gradient method is applied to find optimal solution for tap and capacity control of OLTC (On-Load Tap Changers), SVR (Step Voltage Regulator), and SC (Shunt Condenser). What is more Volt/Var control method is proposed using moving the tie switch as well as IVVC algorithm using power utility control. In the case studies, the estimation and simulation network have been testified in Matlab Simulink.

• Transactions on Electrical and Electronic Materials
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• 제18권2호
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• pp.111-118
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• 2017

The increased diversity of different types of energy sources requires moving towards smart distribution networks. This paper proposes a probabilistic DG (distributed generation) units planning model to determine technology type, capacity and location of DG units while simultaneously allocating ESS (energy storage systems) based on pre-determined capacities. This problem is studied in a wind integrated power system considering loads, prices and wind power generation uncertainties. A suitable method for DG unit planning will reduce costs and improve reliability concerns. Objective function is a cost function that minimizes DG investment and operational cost, purchased energy costs from upstream networks, the defined cost to reliability index, energy losses and the investment and degradation costs of ESS. Electrical load is a time variable and the model simulates a typical radial network successfully. The proposed model was solved using the DICOPT solver under GAMS optimization software.