The Experts below are selected from a list of 23772 Experts worldwide ranked by ideXlab platform

J. Haines - One of the best experts on this subject based on the ideXlab platform.

  • Data Diodes in Support of Trustworthy Cyber Infrastructure and Net-Centric Cyber Decision Support
    Energy Systems, 2013
    Co-Authors: Hamed Okhravi, Frederick T. Sheldon, J. Haines
    Abstract:

    Data diodes provide protection of critical cyber assets by the means of physically enforcing Traffic Direction on the network. In order to deploy data diodes effectively, it is imperative to understand the protection they provide, the protection they do not provide, their limitations, and their place in the larger security infrastructure. In this work, we study data diodes, their functionalities and limitations. We then propose two critical infrastructure systems that can benefit from the additional protection offered by data diodes: process control networks and net-centric cyber decision support systems. We review the security requirements of these systems, describe the architectures, and study the trade-offs. Finally, the architectures are evaluated against different attack patterns.

Hamed Okhravi - One of the best experts on this subject based on the ideXlab platform.

  • Data Diodes in Support of Trustworthy Cyber Infrastructure and Net-Centric Cyber Decision Support
    Energy Systems, 2013
    Co-Authors: Hamed Okhravi, Frederick T. Sheldon, J. Haines
    Abstract:

    Data diodes provide protection of critical cyber assets by the means of physically enforcing Traffic Direction on the network. In order to deploy data diodes effectively, it is imperative to understand the protection they provide, the protection they do not provide, their limitations, and their place in the larger security infrastructure. In this work, we study data diodes, their functionalities and limitations. We then propose two critical infrastructure systems that can benefit from the additional protection offered by data diodes: process control networks and net-centric cyber decision support systems. We review the security requirements of these systems, describe the architectures, and study the trade-offs. Finally, the architectures are evaluated against different attack patterns.

  • CSIIRW - Data diodes in support of trustworthy cyber infrastructure
    Proceedings of the Sixth Annual Workshop on Cyber Security and Information Intelligence Research - CSIIRW '10, 2010
    Co-Authors: Hamed Okhravi, Frederick T. Sheldon
    Abstract:

    Interconnections between process control networks and enterprise networks has resulted in the proliferation of standard communication protocols in industrial control systems which exposes instrumentation, control systems, and the critical infrastructure components they operate to a variety of cyber attacks. Various standards and technologies have been proposed to protect industrial control systems against cyber attacks and to provide them with confidentiality, integrity, and availability. Among these technologies, data diodes provide protection of critical systems by the means of physically enforcing Traffic Direction on the network. In order to deploy data diodes effectively, it is imperative to understand the protection they provide, the protection they do not provide, their limitations, and their place in the larger security infrastructure. In this work, we briefly review the security challenges in an industrial control system, study data diodes, their functionalities and limitations, and propose a scheme for their effective deployment in trusted process control networks (TPCNs.)

Frederick T. Sheldon - One of the best experts on this subject based on the ideXlab platform.

  • Data Diodes in Support of Trustworthy Cyber Infrastructure and Net-Centric Cyber Decision Support
    Energy Systems, 2013
    Co-Authors: Hamed Okhravi, Frederick T. Sheldon, J. Haines
    Abstract:

    Data diodes provide protection of critical cyber assets by the means of physically enforcing Traffic Direction on the network. In order to deploy data diodes effectively, it is imperative to understand the protection they provide, the protection they do not provide, their limitations, and their place in the larger security infrastructure. In this work, we study data diodes, their functionalities and limitations. We then propose two critical infrastructure systems that can benefit from the additional protection offered by data diodes: process control networks and net-centric cyber decision support systems. We review the security requirements of these systems, describe the architectures, and study the trade-offs. Finally, the architectures are evaluated against different attack patterns.

  • CSIIRW - Data diodes in support of trustworthy cyber infrastructure
    Proceedings of the Sixth Annual Workshop on Cyber Security and Information Intelligence Research - CSIIRW '10, 2010
    Co-Authors: Hamed Okhravi, Frederick T. Sheldon
    Abstract:

    Interconnections between process control networks and enterprise networks has resulted in the proliferation of standard communication protocols in industrial control systems which exposes instrumentation, control systems, and the critical infrastructure components they operate to a variety of cyber attacks. Various standards and technologies have been proposed to protect industrial control systems against cyber attacks and to provide them with confidentiality, integrity, and availability. Among these technologies, data diodes provide protection of critical systems by the means of physically enforcing Traffic Direction on the network. In order to deploy data diodes effectively, it is imperative to understand the protection they provide, the protection they do not provide, their limitations, and their place in the larger security infrastructure. In this work, we briefly review the security challenges in an industrial control system, study data diodes, their functionalities and limitations, and propose a scheme for their effective deployment in trusted process control networks (TPCNs.)

Chi Keung Woo - One of the best experts on this subject based on the ideXlab platform.

  • Price-management of Traffic congestion: Hong Kong’s Lion Rock Tunnel
    Case Studies on Transport Policy, 2017
    Co-Authors: Kang Hua Cao, Yuk-shing Cheng, Chi Keung Woo
    Abstract:

    Hong Kong drivers face rush-hour Traffic congestion at the Lion Rock Tunnel (LRT) which interconnects the Northeast New Territories and the Kowloon Peninsula. The LRT’s flat toll is HK$8 (≈US$1.03), much lower than the Tate’s Cairn Tunnel’s (TCT’s) vehicle-differentiated tolls of HK$13 to HK$34 per vehicular trip. We develop two proposals to raise the LRT’s toll and reduce the TCT’s tolls. Using the monthly data available from the Hong Kong Transport Department for the 15-year period of 2000–2014, we estimate a Generalized Leontief demand system to document statistically significant (p-value < 0.05) tunnel usage responses to these toll proposals. As the two tunnels’ elasticity estimates vary by Traffic Direction, a Directional toll proposal may further ease the LRT’s rush-hour congestion. Hence, Hong Kong can price-manage the LRT’s congestion because a decrease in the LRT’s total usage likely reduces the LRT’s peak usage that occurs during the rush hours.

D. Manjunath - One of the best experts on this subject based on the ideXlab platform.

  • ECC - A model for lane-less Traffic with local control laws
    2016 European Control Conference (ECC), 2016
    Co-Authors: Rakesh Chavan, Ameer K. Mulla, Debraj Chakraborty, D. Manjunath
    Abstract:

    In this paper, a new model for Traffic on roads with multiple lanes is developed, where the vehicles do not adhere to lane discipline. Assuming identical vehicles, the dynamics is split along two independent Directions — the Y-axis representing the Direction of the Traffic and the X-axis representing the lateral or the Direction perpendicular to the Traffic Direction. Different influence graphs are used to model the interaction between the vehicles in these two Directions. The instantaneous accelerations of each vehicle, in both X and Y Directions, are functions of the measurements from the neighbouring vehicles according to these influence graphs. Under time invariant influence structure, expected for example, in dense Traffic, the collection converges to a layered formation with fixed inter-vehicle distances. In general, the formation is BIBO stable with the velocity and inter vehicle separations oscillating between a finite number of equilibrium points.