Composites nanoparticles silicon carbide with lutetium diphthalocyanine were created. The size and shape carbide, as well their phase composition, determined by electron microscopy. absorption spectra of a solution diphthalocyanine, composite measured. Raman scattering obtained for carbide. A comparative analysis the various samples was carried out. effect molecules on optical properties elucid...

Mechanical-electrical analogous circuit models are widely used in electromechanical system design as they represent the function of a coupled electrical and mechanical system using an equivalent electrical system. This research uses electrical circuits to establish a discussion of simple active vibration control principles using two scenarios: an active vibration isolation system and an active ...

Introduction: Oscillation based test (OBT) method [1] has been applied to testing different types of analogue circuits [2-5]. In this approach, the circuit is transformed into an oscillator during the test mode and the frequency of oscillation is measured and compared to the reference value obtained on a known-good circuit operating in the same conditions. Circuit modification for the purpose o...

We develop a theory for the quantum circuit consisting of a superconducting loop interrupted by four Josephson junctions and pierced by a magnetic flux (either static or time-dependent). In addition to the similarity with the typical three-junction flux qubit in the double-well regime, we demonstrate the difference of the four-junction circuit from its three-junction analogue, including its adv...

This paper proposes a reflection-type wideband 360 ° analogue phase shifter. The phase shifter employs a branchline coupler circuit to achieve a wideband operation and a varactor-diode circuit to achieve a wide phase-shift range. Analytical formulas are derived to optimize the parameters in the coupler circuit for wideband operation and reduced attenuation ripple, and in the varactor circuit to...

not heavy for windows which are not too large, such as those that should be used for segmentation purposes. Moreover, two points should be noted. First, for the parameters of the form ^g(\i—j\ )ps(i, j), the co-occurrence matrix need not be stored; in fact, in eqn. 1 the elements Ms(i, j) do not appear. Secondly, the number of grey levels K does not influence the computational complexity of the...

A simple metronome circuit based on a 555 timer was constructed in the electronic simulation program, PSPICE, demonstrating the feasibility of the design concept. A more complicated circuit capable of functioning as a metronome or pitch generator was then successfully implemented on a breadboard circuit. This circuit uses a crystal oscillator circuit for frequency generation and a phase-locked ...

A vibration-driven electret generator has been developed for energy harvesting applications. By using parylene as the spring material, a low-resonant-frequency MEMS generator is realized. Large inplane amplitude of 0.8 mm at the resonant frequency as low as 37 Hz has been achieved. With our early prototype, output power of 0.28 μW has been obtained. We also demonstrate electret-powered operatio...

We present a novel circuit representation scheme, namely bond graph, along with strong-typed genetic programming for the evolution of analog filter circuits. Bond graph is a concise and uniform language for the description of circuit systems and more general engineering systems. Many unique characteristics of bond graph makes it an attractive candidate for representing circuit in genetic progra...