Search results for "Scilla"
showing 5 items of 1535 documents
Smadzeņu aktivitātes EEG novērtējums krustotās un nekrustotās disparitātes gadījumā
2022
Diplomdarbs ir uzrakstīts angļu valodā uz 25 lapaspusēm. Tas satur 14 attēlus, 1 tabulu un 67 literatūras avotus. Binokulārā disparitāte ir būtiska mūsu trīsdimensiju uztverei. Lielākajā daļā pētījumu tik izmeklēta smadzeņu darbības disparitāte apstrādes laikā, savukārt garozas aktivitātei katra veida atšķirības laikā tika pievērsta ļoti maza uzmanība. Pētījuma mērķis ir novērtēt smadzeņu aktivitāti krustotās un nekrustotās disparitātes anaglifēšanas vizualizācijas laikā uz plakanpaneļa displeja. Smadzeņu aktivitāte tika reģistrēta ar elektroencefalogrāfu, iegūtie potenciāli (ERP) un neirālās svārstības. Ievērojama aktivitāte tika izraisīta tikai P2 komponentē(ERP) attiecībā uz nesakrustotu…
Damping Provision by Different Virtual Synchronous Machine Schemes
2020
The adoption of virtual synchronous machine (VSM) schemes for the control of power converters is gaining more and more attention both in academia and industry. The VSM control strategies fall into the category of grid-forming converter controls, and they are intended for a range of different applications, providing specific services and different kinds of support to the grid. The paper investigates the possibility of damping provision to the system by VSM power converters. Different schemes are considered and compared, showing the opportunity of the investigated solutions through combined modal and time domain analyses. A specific modification of the power synchronization loop is recognized…
Rhythmic Memory Consolidation in the Hippocampus
2022
Functions of the brain and body are oscillatory in nature and organized according to a logarithmic scale. Brain oscillations and bodily functions such as respiration and heartbeat appear nested within each other and coupled together either based on phase or based on phase and amplitude. This facilitates communication in wide-spread neuronal networks and probably also between the body and the brain. It is a widely accepted view, that nested electrophysiological brain oscillations involving the neocortex, thalamus, and the hippocampus form the basis of memory consolidation. This applies especially to declarative memories, that is, memories of life events, for example. Here, we present our vie…
Effect of a zwitterionic surfactant on the dynamics of a pH oscillator
2008
Dynamics of a harmonic oscillator coupled with a Glauber amplifier
2020
A system of a quantum harmonic oscillator bi-linearly coupled with a Glauber amplifier is analysed considering a time-dependent Hamiltonian model. The Hilbert space of this system may be exactly subdivided into invariant finite dimensional subspaces. Resorting to the Jordan-Schwinger map, the dynamical problem within each invariant subspace may be traced back to an effective SU(2) Hamiltonian model expressed in terms of spin variables only. This circumstance allows to analytically solve the dynamical problem and thus to study the exact dynamics of the oscillator-amplifier system under specific time-dependent scenarios. Peculiar physical effects are brought to light by comparing the dynamics…