• Title, Summary, Keyword: Infrastructure manager

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The Responsibility of An Infrastructure Manager Toward A Railway Competitive Market (복수운영체제에서 철도시설관리자의 철도시설물 유지보수 조직과 업무 설정)

  • Yun, Gyeong Cheol
    • Journal of The Korean Society of Civil Engineers
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    • v.36 no.1
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    • pp.121-128
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    • 2016
  • The restructuring of Korean railway industry, separation of between train operators and an infrastructure manager, had been conducted in 2004 to increase the productivities of railway operations. However, the maintenance-staffs are still employed by Korail (train operator), not by the infrastructure manager, which led the maintenance of railway infrastructure to be conducted by the train operator. The infrastructure manager is now only taking care of financial transferring issues once the train operator requests expenses spent for facility maintenance. Such incomplete restructure may result in a lack of safety performance on railway operations as the roles and responsibilities are less likely to be assigned under the multiple train operators. Thus, this study proposes the way of structuring maintenance divisions and their roles and responsibilities to assure the safe work execution under the circumstance of multiple train operators on the same rail network.

An Analysis of Track Access Charging Systems of European Countries and Recommendation of Policy Directions for Domestic Track Access Charging System (유럽의 선로사용료체계 분석과 국내 선로사용료체계 구축방향)

  • Mun Jin-Su
    • Journal of the Korean Society for Railway
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    • v.8 no.3
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    • pp.235-243
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    • 2005
  • Following the rail reform in 2004, rail industry in Korea has separated into two parts: one is the infrastructure manager and the other is train operator. Amongst many aspects, track access charging system is one of the imminent aspects to be studied closely to make the rail reform successful. In this study, track access charging systems of European countries are closely investigated and compared one another and lessons learnt from their experiences are derived. Finally, policy directions regarding the track access charging system to be adopted in Korea are suggested.

Spatial Fragmentation Analysis of Upland Fields Using Farm Manager Registration Information (농업경영체 등록정보를 활용한 밭 경작지의 공간적 파편화 특성 분석)

  • Lee, Jimin;Yoo, Seung-Hwan;Oh, Yun-Gyeong
    • Journal of The Korean Society of Agricultural Engineers
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    • v.60 no.2
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    • pp.13-24
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    • 2018
  • As food consumption pattern changes (reduced rice consumption and increased consumption of fresh vegetables), managing upland fields became a greater priority. However, the agricultural infrastructure projects have been focused on rice farming, and the infrastructure level to support dry fields cultivation is insufficient. The purpose of this study was to spatial distribution analysis of these dry fields with farm manager registration information. Using FRAGSTATS, we analyzed landscape indices (TA/CA, NP, PD, LSI, LPI, PLADJ, COHESION, CONNECT, AI) of farmlands in which farmers in 13 regions (Si or Gun) cultivated dry-field crops. As results of this analysis, the total area of the fields in Naju-si, Hampyeong-gun and Suncheon-si were found to be wider, but the average area of a patch in Youngam-gun, Hampyeong-gun and Jangseong-gun were wider than other regions. On average, each farmer had farmlands containing of 1.7~2.4 patches and cultivated crops in fields of 0.2~0.5 ha. Farmlands of Hampyeong-gun, Youngam-gun, Naju-si showed high values in adjacency indices, however the farmlands of Suncheon and Gwangyang showed fragmented distribution with low values in adjacency indices. These results of fragmentation analysis of farmlands could be used when we establish the plan of an agricultural infrastructure project or select places for a collaborative agricultural management business promotion project.

Wheel/Rail Interaction and Organizational Design (차륜/레일 상호작용과 조직설계)

  • Bhang Youn-keun;Lee Heon-seok
    • Proceedings of the KSR Conference
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    • pp.1281-1286
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    • 2005
  • This study shows organizational designs to increase the coordination between infrastructure and rolling stock operation organizations after rail reform based on wheel/rail interface and train/track interaction. Information sharing, face-to-face meeting, liaison role, task force, manager responsible for coordination, and team organization could help to coordinate infrastructure construction plan and train operation plan. It is necessary for the organizations to begin to study the interaction between track and train in Korean environments to make the coordination more efficient.

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Development of an Examination System for a e-Learning Quality Manager's Certificate (이러닝 품질관리사의 자격 검정 체제 개발)

  • Ryu, Jin-Sun;Moon, Dae-Young;Lee, Kyung-Soon;Kim, Hee-Pil
    • Journal of Engineering Education Research
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    • v.16 no.1
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    • pp.35-44
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    • 2013
  • The purpose of this study is to develop an examination system for an e-learning quality manager's certificate which is composed of subjects, criteria, method of examination. The task model of e-learning quality manager was modify and task/knowledge/skill matrix was developed to design the examination system through conferences of DACUM committee and an advisory committee. And a survey was carry out to analyze validity of contents of the examination system. The major findings were as the follow: First, occupational specification, job specification, task specification and task/knowledge/skill matrix were developed. Second, examination subjects were developed based on task/knowledge/skill matrix, which were "Basis of e-Learning and plan of service", "Expulsion and management of e-learning infrastructure", "Development of e-learning contents", "Operation and evaluation of e-learning service". Third, the criteria and methods of examination for an e-learning quality manager's certificate were developed, which is composed of test type, the sum of test items, test time and acceptable standards.

Seamless Routing and Cooperative Localization of Multiple Mobile Robots for Search and Rescue Application

  • Lee, Chang-Eun;Im, Hyun-Ja;Lim, Jeong-Min;Cho, Young-Jo;Sung, Tae-Kyung
    • ETRI Journal
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    • v.37 no.2
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    • pp.262-272
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    • 2015
  • In particular, for a practical mobile robot team to perform such a task as that of carrying out a search and rescue mission in a disaster area, the network connectivity and localization have to be guaranteed even in an environment where the network infrastructure is destroyed or a Global Positioning System is unavailable. This paper proposes the new collective intelligence network management architecture of multiple mobile robots supporting seamless network connectivity and cooperative localization. The proposed architecture includes a resource manager that makes the robots move around and not disconnect from the network link by considering the strength of the network signal and link quality. The location manager in the architecture supports localizing robots seamlessly by finding the relative locations of the robots as they move from a global outdoor environment to a local indoor position. The proposed schemes assuring network connectivity and localization were validated through numerical simulations and applied to a search and rescue robot team.

Development of automatic alert populating system of earth structures based on sensor monitoring (센서 모니터링을 활용한 토류구조물 상황전파 자동화 시스템 개발)

  • Kim, Yong-Su;Ahan, Sang-Ro;Jung, Jae-Hyun;Han, Sang-Jea;Jung, Seung-Yong
    • Proceedings of the Korean Geotechical Society Conference
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    • pp.667-672
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    • 2009
  • Gathering information and systemization of infrastructure disaster management is to reduce uncertainties in making decisions and maximize the number of alternations. The key objects of a sensor-based progress report and propagation automation systems are to provide objective data, realize and support decision making and deliver them to a certain area, department, manager and other people rapidly. The major findings and results of this study are as follows. 1) Application of international standard-based alerting protocol(CAP; Common Alerting Protocol). 2) Development of database of existing progress report and propagation manual in order to achieve networking of safety management on major social infrastructure of the nation. 3) Development middleware application programs to progress report and propagation data using SMS, FAX, EMS, VMS, MMS.

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Method and System for Divisible Card Payments for Online Purchases (온라인 구매 시 분할 결제가 가능한 가분형 카드 결제 방법과 시스템)

  • Cho, June-Suh
    • Information Systems Review
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    • v.8 no.3
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    • pp.65-80
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    • 2006
  • This paper proposes a new infrastructure that supports divisible card payment where a combination of multiple credit cards can be used for a single purchase. The divisible card payment infrastructure modifies the existing payment system in two ways. First, the V-Card Manager(VCM) is added to the merchant side to handle the divisible card approval process from respective credit-card issuers. Second, the V-Card Agent(VA) is added to the customer side and generates a customized divisible card, called V-Card, based on the customer's preferences. This paper provides a customizing card payment method that supports divisible payments based on profits and preferences of customers.

A Study on the Development of Evaluation System on the Construction Project Manager's Safety Capability (건설사업관리자의 안전역량 평가체계 개발에 대한 연구)

  • Shin, Dong Hyuk;Seong, Joo Hyun;Yook, In Soo;Lee, Myeong-Gu;Oh, Tae Keun
    • Journal of the Korean Society of Safety
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    • v.32 no.4
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    • pp.40-45
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    • 2017
  • Among various methods to build the construction safety, the consecutive improvement by the measuring and evaluating safety management capabilities for the construction participants such as an owner, a contractor, and a supervisor (construction project manager) can be the effective one. Thus, an effective evaluation and grading criteria to provide performance index for the implementation of safety management activities should be necessary. In this regards, the purpose of this study is to verify the adequacy by offering a competency evaluation system for the supervisor's safety capability and by applying the system to some construction sites. The proposed evaluation system was developed on the basis of the principles of safety management & accident prevention, basic elements of safety and health management system, and safety evaluation cases at home and abroad. The trial evaluation showed that the safety management of the construction site is mainly carried out by the contractor and the supervisor's awareness for the safety management is low on the whole. Especially, it is urgent to improve the support system from the supervisor headquarter and to place the dedicated safety management person in the field.

Analysis of Percentage of Arcing between Pantograph and Overhead Contact Line as a Function of Duration of Arc (팬터그래프와 전차선간 최소 이선아크 지속시간에 따른 이선율 변화량 분석)

  • Park, Young;Lee, Kiwon;Kwon, Sam-Young;Park, Chulmin;Kim, Jae-Kwang;Choi, Won Seok
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.6
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    • pp.855-859
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    • 2014
  • Quality criteria for interaction between a pantograph and overhead contact wire is a most important requirement to assess of the performance for the current collection system. Interaction performance between pantograph and catenary system is subject to approval by the infrastructure manager when a new design and contraction of overhead contact line and pantograph are installed. Among the various performance, percentage of arcing at maximum line speed is a simple test method compared with contact force of pantograph due to direct sensing of pantagraph, calibrations, installations of train, and etc. On the other hand, percentage of arcing is need to reliable arcing detector and general requirements with accordance with EN 50317. In this paper, percentage of arcing are investigated on the function of duration of arc and proposed which is satiable of percentage of arcing. As a results, we proposed which duration of arcs are unsuitable from infrastructures point of view as performance testing for quality of current collection.