Roman Rozin

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Systemic humoral factors have been studied in traumatic, chronic and acute spinal cord injured patients. Antibodies specific to nervous system autoantigens were detected in a majority of the sera obtained from these patients, at different periods after injury. Limited in vitro sprouting of dorsal root ganglia in chicken embryos was observed in the presence(More)
The Hierarchical Simulation Language (HSL) was designed and developed to serve process-oriented simulation of discrete systems. It is interpreter-based and hence offers certain advantages, such as portability (hexdware independence) and modifiability (during program execution). An HSL model consists of two major sections. The Environment contains the(More)
Twenty patients with spinal cord injury underwent serial electromyographic examinations. Fibrillation potentials and positive waves were noted in six patients in the spinal shock phase. In another subject, these potentials were found 27 months after injury. Our finding of significant slowing in the NCV of both nerves, indicates that lower motor neurons are(More)
BACKGROUND Fresh osteoarticular allograft transplantation has a long history of clinical success. These grafts have typically been implanted less than 1 week from donor asystole. HYPOTHESIS Osteoarticular allografts stored 4 to 6 weeks represent a viable alternative to treat full-thickness cartilage and osteochondral defects of the distal femur as(More)
SUMMARY The implementation of a hierarchical, process-oriented programming language for simulation (HSL) is described. It features a hybrid approach, involving the front end of a compiler and the back end of an interpreter. An HSL program is dichotomous in structure. Source statements from each part are translated into three-address code for an abstract(More)
The <i>N-CHIME</i> interface system was designed with the broad objective of enabling, or "empowering," different types of users to carry out effective modeling and simulation applications with the Hierarchical Simulation Language (<i>HSL</i>). A design methodology was developed that is based on a "parallel processes" model: a triad of parallel design(More)