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Higher-Order Hamiltonian for Circuits with (alpha,beta) Elements
(MDPI AG, 2020-04-05)
The paper studies the construction of the Hamiltonian for circuits built from the (alpha,beta) elements of Chua’s periodic table. It starts from the Lagrange function, whose existence is limited to sigma-circuits, i.e., ...
Fractional-order chaotic memory with wideband constant phase elements
(MDPI, 2020-04-09)
This paper provides readers with three partial results that are mutually connected. Firstly, the gallery of the so-called constant phase elements (CPE) dedicated for the wideband applications is presented. CPEs are calculated ...
Design of Signal Generators Using Active Elements Developed in I3T25 CMOS Technology Single IC Package for Illuminance to Frequency Conversion
(MDPI, 2020-02-21)
This paper presents a compact and simple design of adjustable triangular and square wave functional generators employing fundamental cells fabricated on a single integrated circuit (IC) package. Two solutions have ...
Integer- and Fractional-Order VCO Using Non-Inertial Amplitude Stabilization and Modern Active Elements
(Kaunas University of Technology, 2020-04-25)
This paper introduces design of the linearly tunable quadrature voltage-controlled oscillator (VCO) using modern off-the-shelf active elements suitable for the design of electronically adjustable applications. The simplified ...
Analysis of Approaches for Modeling the Low Frequency Emission of LED Lamps
(MDPI, 2020-03-31)
Light emitting diode (LED) lamps are now an established lighting technology, which is becoming prevalent in all load sectors. However, LED lamps are non-linear electrical loads, and their impact on distribution system ...
Konstrukční výzkum učebnice pro výuku angličtiny pro specifické účely: Hodnocení pilotní verze učebnice
(Karlova univerzita, Pedagogická fakulta, 2020-04-02)
Studie představuje metodologii konstrukčního výzkumu učebnice pro výuku angličtiny pro specifické účely (dále jen ESP) a seznamuje čtenáře s prvními výsledky výzkumného šetření. Cílem je vyhodnotit kvalitu pilotní verze ...
Microstructural investigation of defects in photovoltaic cells by the electron beam-induced current method
(Elsevier, 2020-02-19)
This work aims to clarify the application of electron beam-induced current (EBIC) method for the morphological analysis and detection of local defects and impurities in semiconductor structures such as solar cells. One of ...
Method for Volume of Irregular Shape Pellets Estimation Using 2D Imaging Measurement
(MDPI, 2020-04-11)
Growing population and decreasing amount of cultivated land conditions the increase of fertilizer demand. With the advancements of computerized equipment, more complex methods can be used for solving complex mathematical ...
Thermodynamic Driving Forces and Chemical Reaction Fluxes; Reflections on the Steady State
(MDPI, 2020-02-01)
Molar balances of continuous and batch reacting systems with a simple reaction are analyzed from the point of view of finding relationships between the thermodynamic driving force and the chemical reaction rate. Special ...
Improvement of AZ91 Alloy Corrosion Properties by Duplex NI-P Coating Deposition
(MDPI, 2020-03-17)
The corrosion behavior of duplex Ni-P coatings deposited on AZ91 magnesium alloy was studied. The electroless deposition process of duplex Ni-P coating consisted in the preparation of low-phosphorus Ni-P coating (5.7 wt.% ...