• Title, Summary, Keyword: signaling

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A New Data Link Protocol for Railway Signaling Systems

  • Hwang, Jong-Gyu;Lee, Jae-Ho;Park, Yong-Jin;Park, Gwi-Tae
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • v.3B no.4
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    • pp.195-201
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    • 2003
  • In accordance with the computerization of railway signaling systems, the interface link between signaling equipment has been replaced by a digital communication channel and the importance of this communication link has become increasingly significant. However, there are some problems with the present state of railway signaling. First, different communication protocol is applied to interfaces between signaling although they have the same functions. Next, the communication protocols currently used in the railway fields contain various illogical components such as structure, byte formation, error correction scheme and so on. To solve these matters, a new data link protocol for railway signaling systems is designed. In this paper, the structure of protocol and the results of performance analyses are presented. It will be expected to increase the safety, reliability and efficiency of maintenance of signaling systems by using the designed communication protocol for railway signaling in Korea.

Model-based Development of Integrated Onboard Signaling System (모델기반 통합 차상신호시스템 개발)

  • Han, Jae-Mun;Kim, Seok-Heon;Cho, Yong-Gi
    • Proceedings of the KSR Conference
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    • pp.245-250
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    • 2011
  • ERTMS/ETCS Level 1 ATP, ATC and ATS are Signaling Systems adopted in korea. For operating in three different trackside signaling systems, train must have individual onboard signaling systems, ATP, ATC and ATS. Three signaling systems in one train is the main cause to increase installation and maintenance cost. Also it is need more effort to change a onboard signaling system depend on the trackside signaling system. those things should lead to decrease efficiency of the onboard signaling system. one integrated onboard signaling system for ATP, ATC and ATS is the good solution for those problems. IOSS is an integrated Onboard Signaling System and still developing. In this paper, we introduce the methodology of model-based development of IOSS. IOSS has one superviser process and several functional blocks to process individual signaling system s. Rhapsody which is CASE tool is used to construct the structure and develop the software for IOSS.

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Integrated Railway Signaling Systems for Laboratory Testing of Next-generation High-speed Train (한국형 고속전철용 신호시스템의 실험실 시험을 위한 통합 신호시스템)

  • Hwang, Jong-Gyu;Lee, Jong-Woo;Park, Yong-Jin
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.53 no.1
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    • pp.32-39
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    • 2004
  • Railway signaling systems consist of several vital computerized equipment such as CTC(Centralized Traffic Control), EIS(Electronic Interlocking System), ATC(Automatic Train Control) and so on. Currently, the project for development of railway signaling systems for the next-generation high-speed train is progressed according to the G7 project and railway signaling related several companies and research institute are joined this project consortium. The railway signaling systems, being developed in this project, called as a kTCS(Korean Train Control System), is composed of kTCS-CTC, kTCS-IXL, kTCS-ATC and etc. kTCS signaling systems have to be operated at the laboratory testing level as integrated signaling systems by interface between each railway signaling systems before railway field installation and revenue service. To solve this matter, communication protocols between each signaling equipment are designed and message codes for each defined protocols have defined. And also several equipment has developed for the railway integrated signaling systems for laboratory testing. We has plentifully tested and verified the designed protocols and the characteristics of integrated railway signaling systems with our developed each kTCS signaling equipment and communication protocols. In this paper, the integrated kTCS system including communication protocols is presented.

Cross-talk between Wnt/β-catenin and Hippo signaling pathways: a brief review

  • Kim, Minseong;Jho, Eek-hoon
    • BMB Reports
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    • v.47 no.10
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    • pp.540-545
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    • 2014
  • Balanced cell growth is crucial in animal development as well as tissue homeostasis. Concerted cross-regulation of multiple signaling pathways is essential for those purposes, and the dysregulation of signaling may lead to a variety of human diseases such as cancer. The time-honored Wnt/${\beta}$-catenin and recently identified Hippo signaling pathways are evolutionarily conserved in both Drosophila and mammals, and are generally considered as having positive and negative roles in cell proliferation, respectively. While most mainstream regulators of the Wnt/${\beta}$-catenin signaling pathway have been fairly well identified, the regulators of the Hippo pathway need to be more defined. The Hippo pathway controls organ size primarily by regulating cell contact inhibition. Recently, several cross-regulations occurring between the Wnt/${\beta}$-catenin and Hippo signaling pathways were determined through biochemical and genetic approaches. In the present mini-review, we mainly discuss the signal transduction mechanism of the Hippo signaling pathway, along with cross-talk between the regulators of the Wnt/${\beta}$-catenin and Hippo signaling pathways.

First ClustalX-MPI for Ultra-fast Protein and Gene Discovery

  • Kim, Tae-Ho;Han, Jin;Youm, Jae-Boum;Kim, Na-Ri;Park, Won-Sun;Kang, Sung-Hyun;Cuong, Dang-Van;Kim, Hyoung-Kyu;Khoa, Tran Min;Thu, Vu Thi;Kim, Hyun-Ju;Moon, Hye-Jin;Lee, Hyun-Suk;Kim, Eui-Yong;Joo, Hyun
    • 한국생물공학회:학술대회논문집
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    • pp.296-296
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    • 2005
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e-MITOCHONDRIA RESEARCH FOR SYSTEMS BIOLOGY AND PROTEOMICS

  • Joo, Hyun;Youm, Jae-Boum;Kim, Tae-Ho;Kim, Na-Ri;Park, Won-Sun;Kang, Sung-Hyun;Cuong, Dang Van;Kim, Hyoung-Kyu;Khoa, Tran Min;Thu, Vu Thi;Kim, Hyun-Ju;Moon, Hye-Jin;Lee, Hyun-Suk;Kim, Eui-Yong;Han, Jin
    • 한국생물공학회:학술대회논문집
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    • pp.295-295
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    • 2005
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