Entropy, non-ergodicity and non-Gaussian behaviour in ballistic transport

Ballistic transportation introduces new challenges in the thermodynamic properties of a gas of particles. For example, violation of mixing, ergodicity and of the fluctuation-dissipation theorem may occur, since all these processes are connected. In this work, we obtain results for all ranges of diffusion, i.e., both for subdiffusion and superdiffusion, where the bath is such that it gives origin to a colored noise. In this way we obtain the skewness and the non-Gaussian factor for the probability distribution function of the dynamical variable. We put particular emphasis on ballistic diffusion, and we demonstrate that in this case, although the second law of thermodynamics is preserved, the entropy does not reach a maximum and a non-Gaussian behavior occurs. This implies the non-applicability of the central limit theorem.Comment: 9 pages, 2 figure

O mini-cavalo (Equus caballus) puruca da ilha de Marajó - Brasil.

O mini-cavalo Puruca em conservação no BAGAM - Banco de Germoplasma Animal da Amazônia Oriental constitui uma pequena população, sendo resultado do cruzamento do cavalo Marajoara com o pônei da raça francesa ?Shetland?, que foi selecionado até atingir a altura padrão de 1,18m. A Associação Brasileira de Criadores da Raça Puruca ? ABCRP cita que a raça possui inúmeras características morfológicas que o tornam um grupo diferenciado. Os animais são criados em Salvaterra, ilha de Marajó, PA. Os descritores estudados são: Altura da Cernelha (AC), Altura do Dorso (AD), Altura da Garupa (AG), Altura de Costados (ACo), Comprimento da Cabeça (CCa), Comprimento do Pescoço (CP), Comprimento Dorso-Lombo (CDL), Comprimento da Garupa (CG), Comprimento da Espádua (CE), Comprimento do Corpo (CC), Largura da Cabeça (LC), Largura do Peito (LP), Largura das Ancas (LA), Perímetro do Tórax (PT) e Perímetro da Canela (PC), além dos pesos nas idades padrões. A raça, com base em marcadores microssatélites, é uma variedade da raça Marajoara, em função de cruzamentos entre os dois grupos genéticos e seleção para o menor porte. Este trabalho apresenta resultados parciais dos principais descritores, além de avaliar o comportamento e o desempenho da raça em conservação

Two photon decay of π0\pi^0 and η\eta at finite temperature and density

A comparative study of the anomalous decays $\pi^0, \eta \to\gamma\gamma$, at finite temperature and at finite density, is performed in the framework of the three--flavor Nambu--Jona-Lasinio. The similarities and differences between both scenarios are discussed. In both cases the lifetimes of these mesons decrease significantly at the critical point, although this might not be sufficient to observe enhancement of these decays in heavy-ion collisions.Comment: 5 pages, 1 figure. Talk given at Strange Quark Matter 2004, Cape Town, South Africa, 15-20 September, 200

ESO Imaging Survey VII. Distant Cluster Candidates over 12 square degrees

In this paper the list of candidate clusters identified from the I-band data of the ESO Imaging Survey (EIS) is completed using the images obtained over a total area of about 12 square degrees. Together with the data reported earlier the total I-band coverage of EIS is 17 square degrees, which has yielded a sample of 252 cluster candidates in the redshift range 0.2 \lsim z \lsim 1.3. This is the largest optically-selected sample currently available in the Southern Hemisphere. It is also well distributed in the sky thus providing targets for a variety of VLT programs nearly year round.Comment: 5 pages, 3 figures, submitted to Astronomy & Astrophysic

The power of people: When people and culture are the key to organisations success

INTRODUCTION This study intends to analyse the impact of people and culture’s management through engagement and employee experience towards the organisation’s success. In fact, after some research the data demonstrate that organisations understand the importance of retain and create happiness at work. The same organisations are starting to create a journey for their workforce: since the first day people have contact with the brand until the last day when they decide to leave or they go on the retirement and they take with them all the memories and experience, heritage with them. Organisations want and understand the need of having employees engaged, attract new talent, and retain team members, especially high performers and key people. This study reveals that when employees are more committed to be happier at work, they tend to take part of the ownership of their organisations. Today organisations are more focused on people and the value that they can add to every single product and/or service they design, create and deliver. Organisations want to feed a better and healthier culture founded on an inside-out mission and real values. All this investment on internal management is taking the consumer experience to a higher level. Happy and committed employees will create happier and more loyal clients.info:eu-repo/semantics/publishedVersio

Equinos (Equus caballus) da raça Marajoara em conservação na ilha do Marajó.

A equinocultura desenvolvida na ilha de Marajó é extensiva e o manejo é inadequado, principalmente para a conservação da raça pois, em virtude de cruzamentos indiscriminados com raças introduzidas, sofre processo de descaracterização. O estudo está sendo realizado no BAGAM - Banco de Germoplasma Animal da Amazônia Oriental, em Salvaterra, ilha de Marajó, PA. Os principais descritores estudados foram: Altura da Cernelha (AC), Altura do Dorso (AD), Altura da Garupa (AG), Altura de Costados (ACo), Comprimento da Cabeça (CCa), Comprimento do Pescoço (CP), Comprimento Dorso-Lombo (CDL), Comprimento da Garupa (CG), Comprimento da Espádua (CE), Comprimento do Corpo (CC), Largura da Cabeça (LC), Largura do Peito (LP), Largura das Ancas (LA), Perímetro do Tórax (PT) e Perímetro da Canela (PC), além dos pesos nas idades padrões. Neste trabalho são apresentados resultados parciais referentes aos descritores, além de avaliar o comportamento e o desempenho da raça Marajoara em conservação

Coleman meets Schwinger

It is well known that spherical D-branes are nucleated in the presence of an external RR electric field. Using the description of D-branes as solitons of the tachyon field on non-BPS D-branes, we show that the brane nucleation process can be seen as the decay of the tachyon false vacuum. This process can describe the decay of flux-branes in string theory or the decay of quintessence potentials arising in flux compactifications.Comment: 5 pages, 2 figure