Search results for "PROB"

Visible parts of fractal percolation

2009

We study dimensional properties of visible parts of fractal percolation in the plane. Provided that the dimension of the fractal percolation is at least 1, we show that, conditioned on non-extinction, almost surely all visible parts from lines are 1-dimensional. Furthermore, almost all of them have positive and finite Hausdorff measure. We also verify analogous results for visible parts from points. These results are motivated by an open problem on the dimensions of visible parts.

A Probabilistic Model for Crystal Growth Applied toProtein Deposition at the Microscale.

2018

A probabilistic discrete model for 2D protein crystal growth is presented. This model takes into account the available space and can describe growing processes of a different nature due to the versatility of its parameters, which gives the model great flexibility. The accuracy of the simulation is tested against a real recrystallization experiment, carried out with the bacterial protein SbpA from Lysinibacillus sphaericus CCM2177, showing high agreement between the proposed model and the actual images of the crystal growth. Finally, it is also discussed how the regularity of the interface (i.e., the curve that separates the crystal from the substrate) affects the evolution of the simulation.

Baltu filoloģija, 23. sēj., Nr.1

2014

Pozitīvā disciplīna 3 – 4 gadus veciem bērniem pirmsskolā

2017

Diplomdarbs „Pozitīvā disciplīna 3 – 4 gadus veciem bērniem pirmsskolā” ir izstrādāts, lai noskaidrotu, kā iespējams izmantot pozitīvās disciplīnas stratēģijas 3 – 4 gadus veciem bērniem pirmsskolā. Bērnu nevēlamās uzvedības izpausmes nepieciešamas laicīgi identificēt un veikt mērķtiecīgas darbības, lai tās mazinātu, tādejādi novēršot problēmas vēlākos attīstības posmos. Diplomdarba autore ir Vineta Bringule. Darba zinātniskā vadītāja - asociētā profesore, Dr. paed. Linda Daniela. Pētījuma mērķis ir izstrādāt un pārbaudīt pozitīvās disciplīnas izmantošanas stratēģijas 3 – 4 gadus veciem bērniem pirmsskolā. Tika izvirzīti pieci uzdevumi - analizēt teorētisko literatūru par pozitīvās disciplī…

Critical points in open sublevels and multiple solutions for parameter-depending quasilinear elliptic equations

2014

We investigate the existence of multiple nontrivial solutions of a quasilinear elliptic Dirichlet problem depending on a parameter $\lambda>0$ of the form $$ -\Delta_pu=\lambda f(u)\quad\mbox{in }\ \Omega,\quad u=0\quad\mbox{on }\ \partial\Omega, $$ where $\Omega\subset \mathbb{R}^N$ is a bounded domain, $\Delta_p$, $1 < p < +\infty$, is the $p$-Laplacian, and $f: \mathbb{R}\to \mathbb{R}$ is a continuous function satisfying a subcritical growth condition. More precisely, we establish a variational approach that when combined with differential inequality techniques, allows us to explicitly describe intervals for the parameter $\lambda$ for which the problem under consideration admits nontri…

Non-convex power allocation games in MIMO cognitive radio networks

2013

Consideramos un escenario de reparto del espectro, basado en la detección, en una red de radio cognitiva MIMO donde el objetivo general es maximizar el rendimiento total de cada usuario de radio cognitiva optimizando conjuntamente la operación de detección y la asignación de potencia en todos los canales, bajo una restricción de interferencia para los usuarios primarios. Los problemas de optimización resultantes conducen a un juego no convexo, que presenta un nuevo desafío a la hora de analizar los equilibrios de este juego. Con el fin de hacer frente a la no convexidad del juego, utilizamos un nuevo concepto relajado de equilibrio, el equilibrio cuasi-Nash (QNE). Se demuestran las condicio…

Problem Space Identification for Developing Virtual Reality Learning Environments

2021

Our study argues that the extant literature on virtual reality-based learning environments (VRLEs) currently lacks proper definitions and context descriptions for a problem space, which is fundamental for conducting design science research (DSR). Without properly conducted problem space identification, the most pivotal problems cannot be identified resulting solutions lacking validity and unreliable evaluations. This is a major challenge for the DSR in the educational field, but also for the research on VRLEs. The purpose of this paper is to introduce a novel DSR method to support rigorous problem space identification, which would allow rigorous and profound problem space analysis. The inst…

On singular integral and martingale transforms

2007

Linear equivalences of norms of vector-valued singular integral operators and vector-valued martingale transforms are studied. In particular, it is shown that the UMD(p)-constant of a Banach space X equals the norm of the real (or the imaginary) part of the Beurling-Ahlfors singular integral operator, acting on the X-valued L^p-space on the plane. Moreover, replacing equality by a linear equivalence, this is found to be the typical property of even multipliers. A corresponding result for odd multipliers and the Hilbert transform is given.

Minimality via second variation for microphase separation of diblock copolymer melts

2017

Abstract We consider a non-local isoperimetric problem arising as the sharp interface limit of the Ohta–Kawasaki free energy introduced to model microphase separation of diblock copolymers. We perform a second order variational analysis that allows us to provide a quantitative second order minimality condition. We show that critical configurations with positive second variation are indeed strict local minimizers of the problem. Moreover, we provide, via a suitable quantitative inequality of isoperimetric type, an estimate of the deviation from minimality for configurations close to the minimum in the L 1 {L^{1}} -topology.

Galda spēļu izmantošana uzvedības problēmu mazināšanai bērniem 5 – 6 gadu vecumā

2022

Darba autore Madara Ose, Mg. paed. Egijas Laganovskas vadībā izstrādāja diplomdarbu “Galda spēļu izmantošana uzvedības problēmu mazināšanai bērniem 5 – 6 gadu vecumā”. Darba mērķis – analizēt un praktiski pārbaudīt galda spēļu izmantošanas iespējas, uzvedības problēmu mazināšanai bērniem 5 – 6 gadu vecumā. Darba teorētiskajā daļā autore atlasīja un analizēja literatūru un pētījumus par uzvedību un uzvedības problēmām, pirmsskolas vecuma bērna vispārējo attīstību, galda spēlēm un to ietekmi uz bērna uzvedību. Praktiskajā daļā autore aprakstīja pētījumā izmantojamās metodes, apkopoja iegūtos datus no pedagogu aptaujas par uzvedības problēmu aktualitāti, analizēja un apkopoja pētījumā iesaistī…