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The OpenFlow paradigm embraces third-party development efforts, and therefore suffers from potential attacks that usurp the excessive privileges of control plane applications (apps). Such privilege abuse could lead to various attacks impacting the entire administrative domain. In this paper, we present SDNShield, a permission control system that helps network administrators to express and enforce...
The use of Network Function Virtualization to run network services in software enables Software Defined Networks to create a largely software-based network. We envision a dynamic and flexible network that can support a smarter data plane than just simple switches that forward packets. This network architecture needs to support complex stateful routing of flows where processing by network functions...
This paper presents a study in using quality attribute scenarios to evaluate and improve the software architecture of a control system that plans and affects energy use on a plug-in hybrid electric vehicle. The study confirmed for us the value of the quality attribute workshop approach in an industrial, automotive controls setting. This experience has helped us to understand how we might improve the...
Underwater Vehicle (AUV) capable of deployments lasting several weeks or months. The layered control architecture used by the vehicle is difficult to program and restrictive. As part of previous work we have developed a more flexible programming framework capable of performing dynamic feature tracking. However, the gliders new and more computationally capable Linux Single Board Computer (SBC) results...
The traditional system controller in symmetric multi-processors (SMP) controls the memory, so it is suitable for the shared memory programming model. With the emergence of the processors which integrate memory controllers, the system controller seems less important than before. However, since the system controller resides in the center of a computer system, it acts as an artery which directly connects...
Engine control systems, consisted of ECU hardware, software, sensors, and actuators, are the most significant part of automotive control, and can be considered as mixed-signal systems which interact with engine through sensors and actuators. In this article, we present a component-based modeling and simulation framework for automotive system design. This component framework is compatible with AUTOSAR...
Fluid and mechanical system is becoming much more integrated. It's difficult to simulate the whole system using traditional modeling method concentrates on establishment of several equations. Object-oriented simulation architecture of complex fluid and mechanical system was investigated. An example based the architecture focusing on the hydro-mechanical control system of the turbofan engine was established...
Building on the extensive research in Virtual Reality (VR), we are proposing a new dynamic prototype for modelling and simulating carbon emissions in a virtual village called VIRVIL. VIRVIL is a simulated settlement for the assessment of the impact of low and zero carbon technologies and measures in the built environment. The prototype will focus on the impact on the community as a whole, as well...
As semiconductor technology moves closer to the ultimate physical limits for scaling of devices that utilize electrons as information bearing particles, many new opportunities for research in the physical sciences are emerging. If we look beyond the limits of scaling electron devices, many more challenging research opportunities exist in the areas of physics of information carriers and physics of...
The way of on-board digital signal processing based on FPGA is studied. It contains requirement analysis of the on-board processing functional specifications, an on-board real-time digital signal processing system is designed with radiation tolerant FPGA. The design takes full advantage of the massively parallel architecture of the FPGA logic slices to achieve real-time processing at a high data rate,...
Many real-time communication protocols have been studied to guarantee the communication requirements of distributed real-time systems. But, current techniques lack all or most of these requirements specially bounded message delivery time. In this paper we have proposed a Mac layer protocol called RDM+ with concepts similar to Round Data Mailer multi layer protocol. Our simulation results show that...
This paper describes a new path computation model in Multi-protocol Label Switching (MPLS) and Generalized MPLS (GMPLS) networks. It introduces a path computation element (PCE), which is functionally separate from label switching routers (LSRs). The Path Computation Element (PCE) is an entity that is capable of computing a network path or route based on a network graph, and applying computational...
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