head trauma associated with multiple destructive cognitive symptoms. cognitive destruction leads to impairment in cognitive tasks and cognitive failure. cognitive failures include problems with memory, attention, and operation. this study aimed to comparing cognitive failures in mild traumatic brain injury (tbi) patients and normal people in kashan. the study was performed on 40 tbi patients re...

A non-physical wedge generates a spatial dose distribution similar to that produced by a physical wedge without a physical filter in the photon beam. Instead, an exponential fluence profile is produced via motion of one of the collimating jaws. Proposed in the late 1970s, nonphysical wedges have been implemented on both Varian and Siemens’ accelerators as the Varian Dynamic Wedge (DW) and Sieme...

The left ventricular (LV) coronary-perfused canine wedge preparation is a model commonly used for studying cardiac repolarization. In wedge studies, transmembrane potentials typically are recorded; whereas, extracellular electrical recordings are commonly used in intact hearts. We compared electrically measured activation recovery interval (ARI) patterns in the intact heart with those recorded ...

This paper describes certain properties of the fundamental group of the shrinking wedge of circles. Covering space theory is an inadequate tool since the shrinking wedge of circles is not semi-locally simply connected. We conclude with the fact that the shrinking wedge of circles is not homotopy equivalent to the wedge product of a countable number of circles.

introduction evaluation of the delivered dose of externally wedged photon beams by external diode dosimeters during the treatment process requires the estimation of exit surface dose correction factors in various wedge angles and field sizes. materials and methods a system of absorbed dose evaluation, using p-type diode dosimeters placed on the exit surface of a phantom, was characterized for e...

The effect of depth displacement of test bars from the induction wedge of the Ponzo illusion was investigated in two experiments. Either two wedges of opposite orientation were presented simultaneously, one at a near and the other at a far distance, or only one wedge was presented at either the near or the far distance. The test bars were stereoscopically either in the plane of the wedge or dis...

The translation of Digital products applicable to military application has been affected by the DoD's need for lower cost products. Products developed for military application must retain robust mechanical characteristics; however, each product may be tailored to meet government specifications such as mean time between failure and temperature range. Design changes for military use have had a be...

In a previous paper Low91] we presented two new models of timed CSP. The rst model included biased operators in the syntax, which could be used to model diierent priorities on actions. The second model extended this by adding a probabilistic choice operator to the syntax; this allowed us to give a semantics which modelled the probabilities of diierent behaviours occurring. In Low92b] we present...

In order to create more comfortable and energy saving living spaces, we have to investigate what is comfortable and how to measure comfort of users in a living space. Some measures of thermal comfort have been defined as Predicted Mean Vote (PMV) and Predicted Percentage Dissatisfied (PPD) as an international standard. However, complex and high cost equipments are required to measure PMV by con...

objectives: the purpose of this study was to develop and test a new tool for radiographic densitometry by combining periapical films and aluminum step wedge. materials and methods: we reviewed 50 kodak e-speed intraoral films. an aluminum step wedge consisting of 16 steps was constructed. each step was 1mmx3mx10mm. the step wedge was exposed to varying exposure times, ranging from 0.05 second t...