Background. Regional myocardial blood flow has been quantified using transaxial positron emission tomographic (PET) imaging and tracer kinetic modeling. However, the use of transaxial images limits the accuracy of regional partial volume corrections and the localization of the quantified regional flow values. The purpose of the present study was to overcome both problems by calculating regional...

technological developments in various sectors and considering the speed and accuracy as an integral part of the decision-making process in the age of knowledge economy, has caused the disaster economy an important role in risk assessment and management in national and regional planning. the development of models used in this area, resulted in considering indirect consequences of disasters on th...

In this paper we show that the output of a nonlinear system with inputs in (L2 [0, T]; R ' ) whose state satisfies a nonlinear differential equation with standard smoothness conditions can be written as the composition of a nonlinear map with a linear Hilbert-Schmidt operator acting on the input. The result also extends to abstract semi-linear infinite dimensional systems. The approach is via t...

In this work the kinematic and dynamic analyses of a robot manipulator whose topology consists of parallel kinematic structures with linear actuators are approached by means of the theory of screws and the principle of virtual work. The input/output equations of velocity and acceleration are obtained by applying screw theory. Then the generalized forces of the manipulat...

Abstract—This paper presents a voltage mode universal biquadratic filter with one input and five output terminals, realizing all the standard filter functions that are high pass, band pass, low pass, notch and all pass, without changing the circuit topology. The proposed circuit employs three plus-type differential difference current conveyors (DDCCs), three grounded resistors and two grounded ...

In the course of preparing this paper, which initially focused solely on identifying the impacts of input-output analysis on geography, a much broader perspective on the impacts of Walter Isard on geography ultimately emerged. In the tradition of input-output analysis, these impacts are grouped into direct, indirect, and induced effects, and summarized under the heading of influence. Walter Isa...