background: due to their specific nature, such as high incidence, high intensity and direct involvement of all members of society, traffic injuries are of particular importance. through a mega data, this study investigated the epidemiological aspects and depict current situation of road traffic injuries in iran. methods: using legal medicine and traffic police data, deaths from road traffic inj...

Research has shown that adding simulated linear head oscillation to radial optic flow displays enhances the illusion of self-motion in depth (ie linear vection). We examined whether this oscillation advantage for vection was due to either the added motion parallax or retinal slip generated by insufficient compensatory eye movement during display oscillation. We constructed radial flow displays ...

Modeling and Control of Network Traffic for Performance and Secure Communications. (December 2004) Yong Xiong, B.S., Tsinghua University (China); M.S., Chinese Academy of Space Technology (China) Chair of Advisory Committee: Dr. Jyh-Charn (Steve) Liu The objective of this research is to develop innovative techniques for modeling and control of network congestion. Most existing network controls ...

Random Early Detection (RED) was proposed as an active gateway queue-management mechanism. This paper proposes to alter the RED design guideline that unconditionally allows transient congestion, and evaluates its impacts. This unconditional allowance of transient congestion is shown to be harmful when the queue is near full, because it causes buffer overflow at a gateway. Buffer overflow at a g...

Background and aims: This study aimed to evaluate the effect of enforcement of new traffic laws on the fatal and non- fatal injury rates in Iran. Methods: In a longitudinal, interventional controlled trial study, all subjects with history of fatal and non-fatal injuries were studied. Their injuries were caused by six risky violations (unauthorized speed, illegal overtaking, red traffic light c...

iran has had incremental incidence of traffic accident mortality since introduction of mechanization about a century ago. but the newest data from iran show decrease in the absolute number of deaths, death per 10,000 vehicles and death per 100, 000 populations. despite its huge impact on health and economy, research in the field of traffic crashes is still scant and there are still deficiencies...