Quantum Process Semantics

The paper describes a model of subjective goal-oriented semantics extending standard "view-from-nowhere" approach. Generalization is achieved by using a spherical vector structure essentially supplementing the classical bit with circular dimension, organizing contexts according to their subjective causal ordering. This structure, known in quantum theory as qubit, is shown to be universal representation of contextual-situated meaning at the core of human cognition. Subjective semantic dimension, inferred from fundamental oscillation dynamics, is discretized to six process-stage prototypes expressed in common language. Predicted process-semantic map of natural language terms is confirmed by the open-source word2vec data.

The features of the characteristic electromagnetic plasma bunches oscillations in the long magnetic mirror

The aim of this work was to study the spectrum of LF and HF oscillations generated by plasma bunches created and confined in the volume of a microwave cavity immersed in the magnetic field of a mirror trap. The registration of electrostatic oscillations in the plasma was carried out using two flat electrodes mounted diametrically opposite in the central part of the cavity close to its wall. This diagnostic showed the presence of low-frequency oscillations with frequencies of 130 kHz and 450 kHz. The oscillation spectrum in the microwave range was recorded at the minimum of the magnetic trap using a real-time spectrometer and a loosely coupled loop antenna. The registration of the spectra in the 40 MHz band revealed a regular change in the frequency of the fundamental oscillation mode of the cavity and the presence of two harmonics of the synchrotron radiation of the plasma bunch at frequencies of 2.25 GHz and 4.52 GHz, respectively. According to the obtained data, the parameters of the formed bunch (density, shape, volume, energy spectra of plasma components) can be restored.

W-band voltage-controlled oscillator design in 130 nm SiGe BiCMOS technology

The paper presents design flow and simulation results of the W-band fundamental voltage-controlled oscillator in 0.13 μm SiGe BiCMOS technology for an automotive radar application. Oscillator provides fundamental oscillation range of 76.8 GHz to 81.2 GHz. According to simulation results phase noise is –89.3 dBc/Hz at 1 MHz offset, output power is –5.6 dBm and power consumption is 39 mW from 3.3 V source.

Energieeffizienz durch Oberschwingungsreduzierung*/Energy efficiency through harmonic distortion reduction – Harmonics-minimized control strategy in production machines

Oberschwingungen durch frequenzgeregelte Antriebe wirken sich stark negativ auf den Energieverbrauch aus. Diese Oberschwingungen verstärken sich immer dann, wenn schnelle Drehzahländerungen aus Produktivitätsgründen notwendig sind. Zur Kompensation dieser Effekte müssen Steuerungsstrategien optimiert und weiterentwickelt werden. Durch die Erhöhung des Grundschwingungsanteils im Motorsteuersignal lässt sich die Energieeffizienz um bis zu 20 % steigern. Um dieses Ziel zu erreichen, wird eine Bibliothek standardisierter Steuerungsbausteine entwickelt.   The effect of harmonic distortions triggered by frequency-controlled power electronics on energy consumption is non-negligible. These distortions increase when productivity-related accelerations and decelerations occur. A new control strategy has been developed. By increasing the fundamental oscillation ratio in the motor speed changing process, it is possible to increase energy efficiency by up to 20 %. A library model has been developed.

Dual-frequency MEMS based Oscillator using a single ZnO-on-SOI Resonator

In this paper, an oscillator technology with high-Q MEMS resonator as its tank circuit is presented to validate its key functionality as a stable frequency reference across a wide spectrum of frequencies. Particularly, a piezoelectrically-transduced contour-mode MEMS resonator is strategically designed to operate at two distinct layout-defined mechanical modal frequencies (259.5MHz and 436.7MHz). These devices were characterized and modeled by an extracted equivalent LCR circuit to facilitate the design of the oscillator using a standard circuit simulator. For this preliminary study, the MEMS resonators have been integrated with the sustaining amplifier circuit at PCB level using wire-bonding technique and coaxial connectors. As shown by the time-domain measurements, these oscillators are capable of selectively locking into the resonance frequency of the constituent MEMS resonator to generate a stable sinusoidal waveform with peak-to-peak amplitude of 4.6V at 259.5 MHz and 2.3V at 436.7 MHz, respectively. Meanwhile, the fundamental oscillation frequency and it harmonics can be easily observed in a measured frequency-domain spectrum.