Results 81 to 90 of about 99,456 (251)
Quantitative study of scars in the boundary section of the stadium billiard [PDF]
, 1997 We construct a semiclassically invariant function on the boundary of the billiard, taken as the Poincare section in Birkhoff coordinates, based on periodic orbit information, as an ansatz for the normal derivative of the eigenfunction. Defining an appropriate scalar product on the section, we can compute the scar intensity of a given periodic orbit on ...
arxiv +1 more source
REDE MESH ALIMENTADA POR ENERGIA SOLAR
e-xacta, 2012 Este trabalho apresenta um sistema autônomo de comunicação sem fio alimentada por energia solar fotovoltaica. Este sistema permite o acesso à Internet sem fio para dispositivos móveis em áreas ao ar livre. Tem como vantagens: a eliminação da infraestrutura de cabos elétricos para a instalação, a redução de custos com o projeto da rede sem fio, mão-de ...
Fábio de Souza Dutra +2 more
openaire +3 more sources
Localized Structures Embedded in the Eigenfunctions of Chaotic Hamiltonian Systems [PDF]
, 1998 We study quantum localization phenomena in chaotic systems with a parameter. The parametric motion of energy levels proceeds without crossing any other and the defined avoided crossings quantify the interaction between states. We propose the elimination of avoided crossings as the natural mechanism to uncover localized structures.
arxiv +1 more source
Device Performance of Emerging Photovoltaic Materials (Version 5)
Advanced Energy Materials, Volume 15, Issue 12, March 25, 2025.Evolution of the power conversion efficiency (PCE) of single junction emerging photovoltaic (PV) devices as a function of the bandgap energy (Eg) in the yearly “Emerging PV Reports” from version 1 (2020) to version 5 (2024). These surveys present and discuss data from the emerging‐pv.org website and database.
Osbel Almora +25 more
wiley +1 more source
Termoelectricidad cuántica: conversión de energía a escala nanométrica [PDF]
Revista Espa\~nola de F\'isica 34, 11 (2020), 2020 Thermoelectricity describes phenomena that allow us to convert heat into electricity and vice versa. The practical implications of this conversion are obvious. However, research on thermoelectric effects also leads to a deep understanding of the electronic properties in conductive materials.
arxiv
Influence of phase space localization on the energy diffusion in a quantum chaotic billiard [PDF]
, 1998 The quantum dynamics of a chaotic billiard with moving boundary is considered in this work. We found a shape parameter Hamiltonian expansion which enables us to obtain the spectrum of the deformed billiard for deformations so large as the characteristic wave length.
arxiv +1 more source
Low carbon optimal scheduling of integrated energy system considering waste heat utilization under the coordinated operation of incineration power plant and P2G [PDF]
Acta Energiae Solaris Sinica 46 (2025) 299-308In order to improve energy utilization and reduce carbon emissions, this paper presents a comprehensive energy system economic operation strategy of Incineration power plant Power-to-gas (P2G) with waste heat recovery. First, consider the coordinated operation of Incineration power plant - P2G, introduce the refined Power-to-gas two-stage operation ...
arxiv +1 more source
Fogão solar: ferramenta viável para cozimento de alimentos a partir de materiais de baixo custo
Extensio: Revista Eletrônica de Extensão, 2016 Na busca do desenvolvimento de projetos voltados à utilização de energia limpa e renovável, a energia solar vem ganhando destaque nos últimos anos.
Camila Vitorino dos Santos +1 more
doaj +1 more source
Asymptotic expansion for the models of nonlinear dispersive, dissipative, equations [PDF]
arXiv, 2003 Considered herein are the family of nonlinear equations with both dispersive and dissipative homogeneous terms appended. Solutions of these equations that start with finite energia decay to zero as time goes to infinity. We present an asymptotic form which renders explicit the influence of the dissipative, dispersive and nonlinear effect in this decay.
arxiv
Scientia Agricola, 2002 A radiação solar recebida na superfície do solo, além de sua relevância a diversas atividades humanas diárias, desempenha um papel importante no crescimento e desenvolvimento de plantas.
André Belmont Pereira +2 more
doaj