• Title/Summary/Keyword: multi-connect

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Development of Management Information System of Rural Environmental Resources (농촌환경자원의 정보관리시스템 구축)

  • Rhee, Sang-Young;Kim, Sang-Bum
    • Journal of Korean Society of Rural Planning
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    • v.13 no.1 s.34
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    • pp.73-84
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    • 2007
  • The first theme of this study is to preserve and manage rural multi-functionality resource Information. This study is to suggest the method that can irradiate rural multi-functionality resource Information efficiently and constructively. GIS uses PDA and Tablet PC as an investigation tool and verifies the outcome of the development in the investigation system. This study enhanced the mobility function of PDA by installing recording system and camera to the PDA. Also, Using GPS has been ensured scientific precision and realism to the investigation. Direct input on spot can save time, cost and minimize human error by simplifying the investigation process. Database is composed of characters like scale, form, location, distance, resident's opinion and image of 37 resources. The survey system was applied in 170 villages and got a total of 12,270 resources data. Management system should be easy to input and output the surveyed information and to get reports in any kind of form ( i.e. final result can be produced as a map). By utilizing of the Rural Resource information system, the study made a simulation to compare the target areas before and after. Also, digitalized investigation system, minimized re-input and reprocessing of data and enabled to simplify and standardize the process than memorandum investigation. Data collected through digital system could offer people useful information by Web-GIS. It was need to specify practical way in decision-making and a way to measure the value of resources to align with the regional plan. Also, need to keep on developing statistical data and application program that can connect us to present the best solution to support regional planning. Therefore, quality of data is very important. Finally, it is very important to develop various programs to analyze space md rural resource by monitoring rural environment.

Proxy Server Providing Multi-level Privileges for Network Cameras on the Video Surveillance System (CCTV 대체용 네트워크 카메라의 보안 강화를 위한 다중 접근권한 프락시 서버 구현)

  • Bae, Kwang-Jin;Lee, Kyung-Roul;Yim, Kang-Bin
    • Journal of Internet Computing and Services
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    • v.12 no.2
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    • pp.123-133
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    • 2011
  • This paper introduces security problems on the video surveillance systems where the network cameras are equipped at remote places and isolated from the updated and secure environment and proposes a framework for a proxy server that is delegated to connect to network cameras by providing a secure connections from the clients. The server in the framework is deployed within a secure network, secretes the information for connection to cameras and authenticates the clients. Additionally, it provides a secure video service incorporating multi-level privileges for both images and clients through a encryption key distribution and management facility. Through an implementation of the server and a its deployment, it was proved that In this server implement to multi network camera and we confirm compare direct access to network camera equal video quality of service and it can be protection network camera. We expect that can be secure and integral management about traditional network camera through experimental result.

A Flow-based Mobility Support Mechanism in Proxy MIPv6 based Network (Proxy MIPv6 기반 망에서 플로우 기반 이동성 지원 기법)

  • Lee, Jae-Hwoon;Kim, Young-Han
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.36 no.6B
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    • pp.592-599
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    • 2011
  • Proxy Mobile IPv6 (PMIPv6) is the network-based mobility management protocol that network supports the mobility of mobile node (MN) on behalf of the MN. In PMIPv6, a multi-homed MN can connect to the PMIPv6 domain by using only one interface even though it has multiple interfaces. It would be efficient when such a multi-homed MN connects to the PMIPv6 domain by using all of its interfaces. If such a multi-homed MN utilizes all of its interfaces, flow mobility can be provided that the MN handovers one or more flows from one interface to another without re-establishing session. In this paper, we propose the flow-based mobility management protocol by considering the intention of the user. The Router Advertisement (RA) message is used in order for the PMIPv6 domain to inform that the MN can utilize the flow mobility. The proposed mechanism is evaluated by analyzing signaling overhead and handover latency, and the numerical results show that the performance is affected by mobility speed of the MN and the failure probability of the wireless link.

An Efficient Mobility Support Scheme based Multi-hop ARP in Wireless Mesh Networks (무선메쉬 네트워크 환경에서 다중홉 ARP 기반의 효율적인 이동성 지원)

  • Jeon, Seung-Heub;Cho, Young-Bok;Lee, Sang-Ho
    • Journal of the Korea Society of Computer and Information
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    • v.14 no.11
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    • pp.91-96
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    • 2009
  • In this paper, interoperability in heterogeneous wireless mesh network, and mesh nodes for providing efficient IP mobility technique offers multi-hop ARP. Heterogeneous wireless mesh networks to MANETs based on a wireless mesh network backbone and non-MANET architecture is based on a client wireless mesh network and the two mobile networks, combined with a hybrid wireless mesh network are separate. In two different hybrid wireless mesh network routing protocols used to connect the two protocols in the protocol conversion at the gateway to parallel processing problems seriously overload occurs. All of the network reliability and stability are factors that reduce. Therefore, for efficient integration with L3 routing protocols, design techniques to build ARP multi-hop go through the experiment to increase the number of mesh nodes, the packet forwarding rate and an increased hop number of the node was to ensure reliability and stability.

Lambda Routing Table based Dynamic Routing Scheme and Its Characteristics on GMPLS Network (GMPLS 네트워크에서 Lambda Routing Table 조회형 동적 라우팅 방식 및 특성)

  • Kwon Ho-jin;Kim Young-bu;Han Chi-moon
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.29 no.11B
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    • pp.938-945
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    • 2004
  • This paper describes the problems of the existing two multi-layer routing policies(policy 1 and policy 2) and suggests new multi-layer routing policy(policy 3) which is established the packet LSP by inquiry on packet LSP lambda routing tables for GMPLS based optical If Network. All policies of multi-layer routing schemes first try to allocate a newly requested electrical path to an existing optical path that directly connects the source and destination nodes. U such a path is not available, all policies employ different procedures. Policy 1 tries to find available existing optical paths with two or more hops that connect the source and destination nodes and policy 2 tries to establish a new one-hop optical path between source and destination nodes. Policy 3 tries to establish a new one-hop optical path by inquiry on information of the packet LSP lambda routing tables between source and destination nodes. The performances of the three multi-routing policies are evaluated by computer simulation. Simulation results show that policy 3 is the excellent of routing time and traffic acceptance capabilities compare to existing two polices if p is large, where p is the number of packet-switching-capable ports p.

A Development of Multi-Period Bus Scheduling Model (다시간대에 대한 버스 스케줄링 모형 개발)

  • 고종섭;고승영
    • Journal of Korean Society of Transportation
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    • v.17 no.4
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    • pp.47-58
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    • 1999
  • The Purpose of this Paper is to develop a multi-period bus scheduling model, in which a decomposition technique is applied. In general a bus scheduling requires a vast amount of calculation. Thus, a bus scheduling is a very complicated problem even with a single depot and is almost unable to obtain the optimal solution theoretically with many depots. In this paper in order to simplify the problem, the whole operating hours of a day are partitioned into several time periods. In one period, the same headways are maintained. For one period, the bus scheduling is simple and the solution applying the FIFO(First-In, First-Out) Principle is the optimal. However, connection between Periods remains as another scheduling Problem with a reduced problem size. This paper suggests how to connect bus schedules of consecutive periods efficiently, minimizing the operating cost. Through case studies for multiple routes with a single depot, this decomposition technique is proved to be effective practically.

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A Study on Outward Design Strategies to Enhance Publicity into Contemporary Libraries (공공성 구현을 위한 현대 도서관의 외부지향 계획 특성 연구)

  • Moon, Eun Mi
    • Korean Institute of Interior Design Journal
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    • v.24 no.6
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    • pp.212-220
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    • 2015
  • The study aims to identify the design character of libraries today into outwardness which enhances publicity in the library buildings. This design trend tends to be emphasized in contemporary civic libraries. In these days, the libraries become not only to be the traditional places of information but also to be the multi-purpose places to provide community services and cultural spaces. Thus the contemporary libraries, especially big civic libraries, are willing to open to the public of diverse purposes and to accelerate social communication among them through outward design in the buildings. This study surveys literatures and identify accessibility, symbolism, openness, amenity, connection, as the characters of publicity in the libraries. The study also examines the outward design strategies of the libraries which enhance publicity in the ways of design to connect surrounding environment, to symbolize buildings, to wrap transparent external surfaces and to build interior spaces. The study finds in the case studies of ten outstanding civic libraries abroad which were built in relatively recent years that the outward design is achieved mainly through four ways. First, the libraries have connection with surrounding urban environment, thus have continuities from the surrounding. Second, the libraries have the shapes of landmarks which expose themselves and their roles to the outside. Third, the libraries have transparent surfaces through which outdoor environment penetrates into the buildings. Fourth, the libraries have corridors and halls which look like traditional urban public streets and plazas. The study concludes that outward design strategies which employ in contemporary libraries enhance publicity in the libraries. Thus the libraries can perform as multi-functional cultural and open places which accelerate social interactions among the public of cities. This study has the value as a research which emphasizes outwardness as the design strategies which enhance publicity in contemporary libraries.

The Case Study on the Niche Experimentation in Offshore Wind Renewable Energy Transition (해상풍력 기술의 사회-기술시스템 전환과정에 관한 탐색적 사례연구)

  • Kim, Bonggyun;Kim, Dukyoung;Kim, Kyungnam;Kim, Donghwan
    • Journal of Korea Technology Innovation Society
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    • v.17 no.2
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    • pp.355-379
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    • 2014
  • For the transition to the low carbon society, it is inevitable but difficult journey that the new energy technology spread co-exists with formal social system. The objective of offshore wind power plant that has been implemented by the government is to connect large capacity new renewable energy to the central electric power system. Therefore, for the successful introduction of offshore wind power system, the transition of the formal social technology system should be companied. This study analysis the energy system transition about niche strategy adjustment using Multiple Level Perspectives & Strategic Niche Management. It also multi level analyzes and structuralizes the process that new technology, as a research result, evolves through connecting and communicating with formal regime and landscape. Also, adjusting Strategic Niche Management, it diagnoses the obstructive factors in the initial stage of niche experiment and found the major reasons why offshore wind power test plant had been delayed. Through this study, it reaches to the practical implication that offshore niche technology could grow stably in the energy system and various policies.

Implementation of FMC Controller to connect IMS Service Networks (IMS 서비스망 연동을 위한 FMC 컨트롤러 구현)

  • Yoo, Seung-Sun;Kim, Sam-Taek
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.15 no.5
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    • pp.85-90
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    • 2015
  • Work environments within the firm with a concept of mobile office is growing divided into two sections. It's Wi-Fi FMC(Fixed Mobile Convergence) field Which are implemented in a telephone service available from existing fixed-line service in the center of the smart phones and the EMS(Enterprise Mobility Service) field to make people will be able to handle PC the center of the information system within an enterprise using a smart phone instead of terminal facility connects to a system in the workplace and external. This paper developed FMC controller to allow execution IMS(IP Multi-Media Subsystem) services to complement the issues of the FMC corporation, telephony service associated. The controller includes FMC automatic enrollment services, voice quality enhancement of the mobile phone, anywhere within the firm on his mobile phone calls can provide mobility and is also implemented FMC LCR function that use status information from mobile soft-phone within the IP-PBX.

Design of a Smart Application Using Ad-Hoc Sensor Networks based on Bluetooth (블루투스기반 애드 혹 센서망을 이용한 스마트 응용 설계)

  • Oh, Sun-Jin
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.13 no.6
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    • pp.243-248
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    • 2013
  • With rapid growth and fast diffusion of smartphone technologies, many users are deeply concerned about the smart applications and many mobile applications converged with various related technologies are rapidly disseminated. Especially, the convergence technologies like mobile apps that can establish the wireless ad hoc network between smartphone and other peripherals and exchange data are appear and progressed continuously. In this paper, we design and implement the smart app using bluetooth based wireless ad hoc sensor network that can connect smartphone with sensors and exchange data for various smart applications. The proposed smart application in this paper collects data obtained from more than 2 multi-sensors in real time and fulfills the decision making function by storing data at the database and analysing it. The smart application designed and implemented in this paper is the healthcare application that can analyze and evaluate the patient's health condition with sensing data from multi-sensors in real time through bluetooth module.