In this paper, we propose models and solution approaches for determining the facility locations of medical supplies in response to large-scale emergencies. We address the demand uncertainty and medical supply insufficiency at each facility by requiring each demand point be serviced by a multiple quantity of facilities located at different distance (quality) levels. The problem is formulated as ...

This paper presents an object tracking system. Our goal is to create a real-time object tracker that can handle occlusions, track multiple objects that are rigid or deformable, and on indoor or outdoor sequences. This system is composed of two main modules: motion detection and object tracking. Motion detection is achieved using an improved Gaussian mixture model. Based on multiple hypothesis o...

To enable the growth of wireless networks in high assurance computer systems, it is essential to establish a security engineering methodology that provides system security managers with a procedural engineering process to develop computer security policies. Our research demonstrates how wireless communication technology is deployed using the Multiple Independent Levels of Security (MILS) archit...

Safety-critical systems are used in many domains (military, avionics, aerospace, etc.) and handle critical data in hostile environements. These systems must protect data so that only allowed entities can read or write information. However, due to their increased number of functionalities, safety-critical systems design becomes more complex ; this increases difficulties in the design and the ver...

Recently analyzed long-term Zircaloy autoclave corrosion data were used to develop new Zircaloy corrosion correlations. Calculations were performed to estimate the additional quantity of corrosion that may be experienced by spent Zircaloy-c1ad fuel assemblies from long-term exposure to geologic repository conditions. These estimates indicate that the level of general corrosion is very small and...

OF THE MASTER’S THESIS Author: Gao Liang Title: Hierarchical MIMO modulation in digital TV transmission Date: September 2009 Number of pages: 76 Faculty: Electronics, Communications and Automation Professorship: S-72 Communications Engineering Supervisor: Professor Olav Tirkkonen It is possible to use hierarchical modulation in broadcast systems so that there are two different levels of service...

In wireless sensor network (WSN) applications with multiple gateways, it is key to route location dependent subscriptions efficiently at two levels in the system. At the gateway level, data sinks must not waste the energy of the WSN by injecting subscriptions that are not relevant for the nodes in their coverage area and at WSN level, energy-efficient delivery of subscriptions to target areas i...