This paper examines modeling of oxygen consumption (VO2), cardiac output (CO) and some other physiological parameters in response to cardiopulmonary exercise on a bicycle ergometer. The results are presented to athlete who has undergone a total of 10 stress tests over 10 years. The...

The timing and synchronisation of the detectors in particle physics play the key role due to the high event rates at particle accelerators. The trigger module in ATLAS Forward Physics project ...

This paper examines procedure for static and dynamic modeling of oxygen consumption (VO2) and cardiac output (CO) as response to cardiopulmonary exercise on a treadmill ergometer. It should be noted that ...

It is well known that the heart rate variability (HRV) reflects the activity of the autonomic nervous system. HRV is calculated from heart rate (HR). HR is a nonstationary signal; its frequency variation &#...

This paper compares the different versions of hardware realization of low-cost device for standstill frequency response SSFR testing. The SSFR testing is a modern method used for testing and parameter&#...

Central blood pressure (cBP) is an important indicator of the load on the heart. Because cBP is difficult to measure directly, indirect methods have been developed. We investigated suitability of blood pressure cuff pulse&#x...

Long-term usage of photomultiplier tubes (PMTs) led to the discovery of aging effects especially in harsh environment as a radiation is. Aging decreases the efficiency of the PMTs. This means PMTs need to the recalibration after some time. Because CERN′s Large Hadron Collider (LHC)...

A novel way of optimizing a reluctance motor with rotor manufactured by 3D printing technology is presented. The optimization algorithms must take into account the tolerances of its production that are generally higher compared with classical processing, which requires a high level of&#...

Pulse-width modulation (PWM) is widely used for control in power electronics. The most of power electronic circuits are controlled by PWM signals of various forms. PWM transform the information in the amplitude of a bounded input signal into the pulse width output signal. The ...

In this paper the experiments with two mutually coupled digital oscillators are described. The digital oscillators with quadrature outputs are used for experiment. On the beginning the amplitude stabilization and way of synchronization of digital oscillator are described. Then the behavior o...

This paper presents a new approach to the design of direct digital frequency synthesizer (DDS) with possibility of fractional frequency tuning. Such DDS has advantage if small number of bits for phase accumulator is used. A new DDS frequency synthesizer was designed to enable ...