For several reasons, particularly due to the mismatch in feeder impedance, accurate power sharing islanded microgrids is a challenging task. To get around this problem, distributed event-triggered control strategy proposed article. The suggested technique adaptively regulates virtual impedances at both fundamental positive/negative sequence and harmonic frequencies and, therefore, accurately sh...

We studied the effects of changes in aortic input impedance on the force-velocity-length relationship of the left ventricle in sir open-chest dogs, using a right heart bypass preparation. The control relationship between wall stress and ventricular diameter or mean velocity of shortening (MVCF) was determined first by using maneuvers (changes in venous return and phenylephrine infusion) that di...

This paper describes a method to model the impedance of Haddad type resistor over frequency interval ranging from 10 200 MHz, hereafter defined as LF-RF range. To this end, novel standards, 1 kΩ and 100 Ω, have been designed manufactured with aim sharply identifying nodes that define impedance. Resistor modelling is divided into two main parts: first one, describing central coaxial core second ...

OBJECTIVE This is a study of the influence of transthoracic impedance (TTI) on defibrillation, resuscitation and survival in patients with out-of-hospital cardiac arrest (OHCA), treated with a non-escalating impedance-compensating 150 J biphasic waveform defibrillator. METHODS Cardiac arrest data from two EMS systems were analyzed retrospectively. All witnessed arrests from patients who prese...

Chronic venous insufficiency of the lower limbs is a disease which is caused by an increased blood pressure inside the veins of the leg and the resulting increase of the contained blood volume. This work focuses on developing a device which uses impedance plethysmography, also known as impedance phlebography, to obtain information about the blood volume in the lower leg and provides the possibi...

measurement of the stroke volume and its changes over time can be very helpful for diagnosis of dysfunctions in the blood circulatory system and monitoring their treatments. impedance cardiography (icg) is a simple method of measuring the stroke volume based on changes in the instantaneous mean impedanceof the thorax. this method has received much attention in the last two decades because it is...