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Mobility of users significantly impacts performance of a mobile ad-hoc network. Most existing simulation tools offer only a few random mobility models, which poorly reflect user movements in outdoor scenarios. For example, they do not consider restrictions of a spatial environment. In this paper, we describe a comprehensive and extensible approach to model(More)
MRI scans were obtained of the cervical section of the spinal cords of 30 patients with remitting multiple sclerosis. During the study period, patients received immunomodulatory agents (seven received interferon beta-1a, 13 received interferon beta-1b, and 10 received glatiramer acetate). Total focus volume in brain matter was assessed before and after(More)
Network simulation tools are frequently used to analyze performance of MANET protocols and applications. They commonly offer only simple radio propagation models that neglect obstacles of a propagation environment. In this paper, we integrate a more accurate radio propagation model into a simulation tool. The model is based on ray tracing and considers(More)
Presented is a review of the literature on the main causes of vertebral syndrome in multiple sclerosis (MS): dystrophic processes in spinal motor segments, disturbance of spinal static, development of functional blockade, osteoporosis, appearance of demyelinization foci in roots and the spinal cord, myelopathy, replacing foci by cavities. The authors report(More)
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