Several traffic control approaches address the problem of reducing traffic jams. A class of these approaches deals with coordination of traffic lights to allow vehicles traveling in a given direction to pass an arterial without stopping. This paper presents an approach where each traffic light behaves like a social insect, having coordinated signals plan as tasks to be performed. The model uses...

Arterial stiffness increases with ageing and hypertension. Regular physical activity has been recommended as an important management component of hypertension. The purpose of this study was to examine the acute impact of maximal dynamic exercise and the effect of 20 weeks of aerobic exercise on arterial stiffness of the carotid and brachial arteries in older hypertensives. Nine previously seden...

PURPOSE: To establish the methods of semi-quantification of regional hepatic blood flow using paramagnetic iron oxide (SPIO)-enhanced dynamic MR imaging and two-input, one-compartment model in phantom and clinical studies. METHOD AND MATERIALS: The phantom study was conducted using a 1.5-T MR scanner (Achieva, Philips Medical Systems) and SPIO (Resovist, Bayer Healthcare)-agarose phantom. 2D-GR...

PURPOSE The objective of this study is the implementation of a kinetic model for 11C-desmethylloperamide (11C-dLop) and the determination of a typical parameter for P-glycoprotein (P-gp) functionality in mice. Since arterial blood sampling in mice is difficult, an alternative method to obtain the arterial plasma input curve used in the kinetic model is proposed. METHODS Wild-type (WT) mice (p...

in this research, numerical simulation of a symmetric impact of a 2-d wedge, considering dynamic equations in two-phase flow is taken into account. the two-phase flow around the wedge is solved based on finite volume method and volume of fluid (vof) scheme. the dynamic mesh model is used to simulate dynamic motion of the wedge, thereby the effects of different dynamic meshes in both structured ...

in this study, 3 models of time-varying parameters (tvp), dynamic model selection (dms) and dynamic model averaging (dma) and a comparison with the ordinary least squares (ols) method in matlab in the time period 2003-2013 (with data on a monthly basis) are discussed. in the present study, the variables of unofficial exchange rate changes, interest rate changes and inflation in oil price foreca...

Arterial pressure, cardiac sympathetic tonus (ST), and heart rate (HR) are reduced after a single bout of dynamic exercise in spontaneously hypertensive rats (SHR). To test if the arterial baroreflex is required for these postexercise responses, intact ( n = 9) and sinoaortic-denervated (SAD) rats ( n = 5) were chronically instrumented with an arterial catheter for the measurement of arterial p...