• 제목/요약/키워드: Responsive Dynamic System

검색결과 18건 처리시간 0.023초

Location Responsive Vehicle Digital Signage System for Visual Mobile Advertisement

  • 이병덕;양승연;신재권;김진태;이선희
    • 한국위성정보통신학회논문지
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    • 제12권1호
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    • pp.49-53
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    • 2017
  • In this paper we present the combination of location based mobile advertisement services and dynamic digital signage markets has been developing recent days to provide consumer admired visual mobile advertisement on all kind transportation vehicles. In spite of that, the digital signage advertisement content management is still not that easy to manage the content dynamically as well operation is most time consuming to handle the contents dynamically in digital signage business. As location based services is most impactful service in shopping, the location responsive advertisement on vehicle signage will be most desirable mobile advertisement to help people migrate from one place to another place for travel or stay. This paper propose a mobile location responsive digital signage system for vehicles using the GPS and wireless infrastructure integrated with digital signage system. This proposed research use the centralized digital signage system architecture for the mobile advertisement application and this system can be expanded to different vehicles for digital advertisement including buses, trucks, train, air vehicle and any other form of mobile advertising vehicles. Also, this present an effective advertisement recommendation algorithm, by which the advertisement can be selected broadcasted for the right advertisement ventures more effectively as the service requested from advertiser. This paper present the emulated experimental result to evidence the proposed dynamic vehicle signage system performed better than compared with traditional signage random advertising. The emulated result proves that the advertisement recommendation algorithm can effectively works out the targeted key audiences in location responsive region the algorithm evaluated.

Preparation of Biodegradable Thermo-responsive Polyaspartamides with N-Isopropylamine Pendent Groups (I)

  • Moon, Jong-Rok;Kim, Ji-Heung
    • Bulletin of the Korean Chemical Society
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    • 제27권12호
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    • pp.1981-1984
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    • 2006
  • Novel amphiphilic, thermo-responsive polyaspartamides which showed both LCST (lower critical solution temperature), and sol-gel transition were prepared and characterized. The polyaspartamide derivatives were synthesized from polysuccinimide, the polycondensate of aspartic acid monomer, via successive nucleophilic ring-opening reaction by using dodecylamine and N-isopropylethylenediamine (NIPEDA). At the intermediate composition ranges, the dilute aqueous solution exhibited a thermally responsive phase separation due to the presence of LCST. The phase transition temperature was controllable by changing the content of pendent groups. In addition, a physical gelation, i.e. the sol-gel transition was observed from the concentrated solutions, which was elucidated by dynamic viscoelastic measurements. These novel injectable and thermo-responsive hydrogels have potential for various biomedical applications such as tissue engineering and current drug delivery system.

광센서 조광제어시스템의 광센서 최적 방향성과 위치에 관한 실험적 연구 (An Experimental Study of the Optimum Spatial Characteristics and Location of Photosensor for Daylight Responsive Dimming Systems)

  • 정봉근;최안섭
    • 조명전기설비학회논문지
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    • 제17권5호
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    • pp.8-14
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    • 2003
  • 광센서 조광제어시스템은 실내로 유입되는 주광량에 따라 자동으로 광속량을 조절하여 설정조도를 유지시켜주는 에너지절약 시스템이다. 이 시스템의 성공여부를 결정하는 여러 요인들 중, 광센서의 측광값이 작업면 조도를 얼마나 정확히 나타내는가가 중요한 포인트가 된다. 그래서 본 연구에서는 실험을 통해 광센서의 여러 측광방향 형태를 결정하고, 각 측광방향별 광센서의 반응신호를 측정하였다. 그리고 광센서의 적절한 위치를 찾기 위해 실제공간에서 서로 다른 위치에 광센서를 설치하여, 작업면 조도와 광센서 반응신호의 관계를 측정하고 분석하였다. 분석된 결과를 토대로 광센서의 적절한 위치와 측광방향성을 제시하였다.

가변 샘플링간격 EPC/SPC 결합시스템의 개발 (Development of Integrated Variable Sampling Interval EngineeringProcess Control & Statistical Process Control System)

  • 이성재;서순근
    • 대한산업공학회지
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    • 제32권3호
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    • pp.210-218
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    • 2006
  • Traditional statistical process control (SPC) applied to discrete part industry in the form of control charts can look for and eliminate assignable causes by process monitoring. On the other hand, engineering process control (EPC) applied to the process industry in the form of feedback control can maintain the process output on the target by continual adjustment of input variable. This study presents controlling and monitoring rules adopted by variable sampling interval (VSI) to change sampling intervals in a predetermined fashion on the predicted process levels under integrated EPC and SPC systems. Twelve rules classified by EPC schemes(MMSE, constrained PI, bounded or deadband adjustment policy) and type of sampling interval combined with EWMA chart of SPC are proposed under IMA (1,1) disturbance model and zero-order (responsive) dynamic system. Properties of twelve control rules under three patterns of process change (sudden shift, drift and random shift) are evaluated and discussed through simulation and control rules for integrated VSI EPC and SPC systems are recommended.

국내 은행수익성의 장단기적 변동구조 (The Structure of the Short and the Long-Run Variations in the Domestic Bank Earnings)

  • 김태호;박지원;김미연
    • 한국경영과학회지
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    • 제29권1호
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    • pp.31-41
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    • 2004
  • This study analyzes the structure of the variations In the domestic bank earnings and examines their dynamic features by estimating the short-run response and the long-run adjustment Process after the changes in financial market variables. A system of the equations for the bank stock price index and KOSPI is formulated to utilize the whole information in the market and simultaneously estimated to identify the relationships between the market variables and the bank earnings. Since the bank stock price is found to be responsive to changes in none of the market variables in the short run, while being relatively responsive to dollar exchange rate and business state, It implies that a good economic conditions and a stable foreign exchange rate should be maintained to Improve the level of the stock price In the long run. In addition, the dynamic structure of the responses of the bank stock price index and KOSPI to the initial changes in the market variable are compared and anlayzed. The response of the bank stock price appears to take much longer in adjusting to the long-run eouilibrium level than that of KOSPI. As a result, the cumulative response of the bank stock price index over time is found much bigger than that of HOSPI.

GIS와 GPS를 이용한 배달/수거 물류관리시스템 (A Pickup/Delivery Management System Using Geographic Information System and Global Positioning System)

  • 함승훈;이문규
    • 산업공학
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    • 제12권4호
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    • pp.557-566
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    • 1999
  • This paper considers a door-to-door service system in which pickups or deliveries are performed by a trip of a single vehicle. Each customer request specifies the quantity of the load transported, the location, and the time window within which it is to be picked up or delivered. Since the system is demand responsive, i.e., new or emergent requests become available in real-time, the current vehicle route has to be reconstructed to include these requests. In this case, only continuous vehicle tracking enables control over the requests and ensures that the requests are satisfied on time. This paper suggests a pilot pickup/delivery management system integrating a geographic information system(GIS) and a global position system(GPS) to efficiently deal with such a dynamic environment. The GIS offers a way of displaying the vehicle route on digital maps for the region under concerned. Also displayed is the current location of the vehicle obtained from the GPS. A heuristic algorithm is used to dynamically determine the vehicle route. A practical example is provided to show the feasibility of the system.

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신행정수도의 건설과 도시동태성 분석 (Construction of New Administrative Capital and Urban Dynamics Analyses)

  • 이만형;최남희
    • 한국시스템다이내믹스연구
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    • 제4권1호
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    • pp.69-91
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    • 2003
  • Using qualitative methods hinged on urban dynamics models, the paper addresses major issues concerned with new administrative capital construction. It tries to summarize the existing debates on new administrative capital construction and reinterpret diverse interacting factors in terms of reinforcing or balancing feedback structure. The paper suggests that understanding up on the dynamic mechanism imbedded in circular causal loop diagrams is the key to set up appropriate proposals and action plans for the new administrative capital, as they would reveal complicated linkages between the Capital Region and the rest, in addition to the urban dynamic of new administrative capital. In the same context, the paper can confirm similar features reflected in the relocation of capital functions at Canberra, Australia and Berlin, Germany. It has paid special attention to the fact that both Australian and German governments altogether stress the positive feedback loops as they have overcome unprecedented political confrontation among rival cities: Basically, they have encouraged gives-and-takes among major stake-holders. These research findings indicate that the future of new administrative capital construction depends on consensus buildings that can accommodate socio-economic and territorial changes between pros and cons. Although further researches and validations are needed, the system approach presented in this paper could assist Korean decision-makers in developing robust and responsive policy initiatives under uncertainties.

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분산관리 시스템을 위한 동적 스케쥴링의 연구 (A Study on the Dynamic Scheduling for Distributed Management Systems)

  • 정남기
    • 대한산업공학회지
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    • 제21권2호
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    • pp.207-216
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    • 1995
  • Constructing a distributed management system has its own advantages in addressing the issue of implementing a quick responsive management system in dynamically changing environment of enterprise. We suggest a basic scheduling methodology applicable to a distributed production management system. A new concept of "flexible schedule" is introduced as a tool to accommodate dynamically changing situations of job shops. Then a search technique (referred to as CSP-CBA search) is presented to obtain such a schedule for the job shop scheduling problem, which is converted into a constraint satisfaction problem(CSP), by using the constraint based analysis(CBA). This approach is tested on more than 100 test problems. The results show that the suggested approach required shorter CPU time and solved more problems in given time than another fixed schedule method.

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가변 샘플링간격 EPC/SPC 결합시스템의 개발 (Development of Integrated Variable Sampling Interval Engineering Process Control & Statistical Process Control System)

  • 이성재;서순근
    • 한국경영과학회:학술대회논문집
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    • 한국경영과학회/대한산업공학회 2005년도 춘계공동학술대회 발표논문
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    • pp.723-729
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    • 2005
  • Traditional statistical process control(SPC) applied to discrete part industry in the form of control charts can look for and eliminate assignable causes by process monitoring. On the other hand, engineering process control(EPC) applied to the process industry in the form of feedback control can maintain the process output on the target by continual adjustment of input variable. This study presents controlling and monitoring rules adopted variable sampling interval(VSI) to change sampling intervals in a predetermined fashion on the predicted process levels for integrated EPC and SPC systems. Twelve rules classified by EPC schemes(MMSE, constrained PI, bounded or deadband adjustment policy) and type of sampling interval combined with EWMA chart of SPC are proposed under IMA(1,1) disturbance model and zero-order (responsive) dynamic system. The properties of twelve control rules under three patterns of process change(sudden shift, drift and random shift) are evaluated and discussed through simulation and control rules for integrated VSI EPC and SPC systems are recommended.

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필수 서비스 생존성 향상을 위한 자원 재할당 기법 (A Resource Reallocation Scheme Enhancing the Survivability of Essential Services)

  • 김성기;민병준;최중섭;김홍근
    • 정보처리학회논문지C
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    • 제10C권1호
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    • pp.95-102
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    • 2003
  • 새로운 방법의 시스템 공격에 대해서도 필수 서비스의 생존성을 보장하기 위해서는 서비스가 필요로 하는 중요 자원을 식별하고 위급 상황에 적절히 대응하는 방안이 필요하다. 본 논문에서는 침입 감내 시스템 구축을 위한 핵심 기술의 하나인 동적 자원 재할당 기법을 제시한다. 이 기법에서는 선택된 편수 서비스에 대해 해당 호스트 내에서 자원을 재할당하여 침입이 발생한 후에도 필수 서비스가 생존할 수 있도록 한다. 테스트베드를 구축하여 실험을 실시한 결과 본 자원 재할당 기법의 타당성을 입증할 수 있었다 향후 이 기법을 침입 탐지 시스템과 접목 시키면 매우 효과적인 공격 대응 방안이 될 것이다.