Scaling Solutions in Continuous Dimension

We study scaling solutions of the RG flow equation for the Z_2-effective potential in continuous dimension. As the dimension is lowered from d=4 we first observe the appearance of the Ising scaling solution and successively the apparence of multi-critical scaling solutions of arbitrary order. Approaching d=2 these multi-critical scaling solutions converge to the unitary minimal models found in CFT.Comment: 5 pages, 5 figures, published versio

Extracting Accurate Long-Term Behavior Changes from a Large Pig Dataset

Visual observation of uncontrolled real-world behavior leads to noisy observations, complicated by occlusions, ambiguity, variable motion rates, detection and tracking errors, slow transitions between behaviors, etc. We show in this paper that reliable estimates of long-term trends can be extracted given enough data, even though estimates from individual frames may be noisy. We validate this concept using a new public dataset of approximately 20+ million daytime pig observations over 6 weeks of their main growth stage, and we provide annotations for various tasks including 5 individual behaviors. Our pipeline chains detection, tracking and behavior classification combining deep and shallow computer vision techniques. While individual detections may be noisy, we show that long-term behavior changes can still be extracted reliably, and we validate these results qualitatively on the full dataset. Eventually, starting from raw RGB video data we are able to both tell what pigs main daily activities are, and how these change through time

Spontaneous magnetization of the Ising model on the Sierpinski carpet fractal, a rigorous result

We give a rigorous proof of the existence of spontaneous magnetization at finite temperature for the Ising spin model defined on the Sierpinski carpet fractal. The theorem is inspired by the classical Peierls argument for the two dimensional lattice. Therefore, this exact result proves the existence of spontaneous magnetization for the Ising model in low dimensional structures, i.e. structures with dimension smaller than 2.Comment: 14 pages, 8 figure

Bose-Einstein Condensation on inhomogeneous complex networks

The thermodynamic properties of non interacting bosons on a complex network can be strongly affected by topological inhomogeneities. The latter give rise to anomalies in the density of states that can induce Bose-Einstein condensation in low dimensional systems also in absence of external confining potentials. The anomalies consist in energy regions composed of an infinite number of states with vanishing weight in the thermodynamic limit. We present a rigorous result providing the general conditions for the occurrence of Bose-Einstein condensation on complex networks in presence of anomalous spectral regions in the density of states. We present results on spectral properties for a wide class of graphs where the theorem applies. We study in detail an explicit geometrical realization, the comb lattice, which embodies all the relevant features of this effect and which can be experimentally implemented as an array of Josephson Junctions.Comment: 11 pages, 9 figure

Influência do tempo de condução de agroflorestas na atividade microbiológica do solo.

A atividade biológica é um ótimo indicador de qualidade do solo, pois é um atributo sensível ás características bióticas e abióticas do sistema. A fim de quantificar esses atributos, foram coletadas amostras de solo nas profundidades de 0 a 2,5 cm, 2,5 a 5 cm, 5 a 10 cm, 10 a 15 cm, 15 a 30 cm, 30 a 45 cm e 45 a 60 cm para obtenção do carbono da biomassa microbiana (BMS-C), respiração basal do solo (RBS) e quociente metabólico (qCO2) em áreas de regeneração natural de 10 anos e agroflorestas de 5 e 10 anos. As áreas de regeneração natural apresentaram teores mais elevados de BMS-C e maior RBS, porém maiores qCO2 foram encontrados nas agroflorestas de 10 anos devido ao manejo utilizado nas agroflorestas.Resumo expandido

Influência do tempo de condução das agroflorestas na diversidade da fauna edáfica.

Agroflorestas são utilizadas para recuperar a sustentabilidade no meio rural, que atualmente é uma preocupação crescente. O presente trabalho teve como objetivo avaliar a diversidade da fauna edáfica em sistemas agroflorestais nas agroflorestas do município de Barra do Turvo estado de São Paulo. Para isso foi utilizado o delineamento em blocos casualizados com três tratamentos: agroflorestas de 5 e 10 anos e áreas em regeneração natural de 10 anos. Para coleta dos organismos foram utilizadas armadilhas do tipo ?Provid?. Houve diferença significativa apenas no índice de diversidade de Shannon e índice de equitabilidade de Pielou, contando com a superioridade da área de regeneração natural, devido à presença de nichos diversificados, por apresentarem plantas de estratos de luz mais baixos.Resumo expandido

Temporal Model Adaptation for Person Re-Identification

Person re-identification is an open and challenging problem in computer vision. Majority of the efforts have been spent either to design the best feature representation or to learn the optimal matching metric. Most approaches have neglected the problem of adapting the selected features or the learned model over time. To address such a problem, we propose a temporal model adaptation scheme with human in the loop. We first introduce a similarity-dissimilarity learning method which can be trained in an incremental fashion by means of a stochastic alternating directions methods of multipliers optimization procedure. Then, to achieve temporal adaptation with limited human effort, we exploit a graph-based approach to present the user only the most informative probe-gallery matches that should be used to update the model. Results on three datasets have shown that our approach performs on par or even better than state-of-the-art approaches while reducing the manual pairwise labeling effort by about 80%

Evidence for the super Tonks-Girardeau gas

We provide evidence in support of a recent proposal by Astrakharchik at al. for the existence of a super Tonks-Girardeau gas-like state in the attractive interaction regime of quasi-one-dimensional Bose gases. We show that the super Tonks-Giradeau gas-like state corresponds to a highly-excited Bethe state in the integrable interacting Bose gas for which the bosons acquire hard-core behaviour. The gas-like state properties vary smoothly throughout a wide range from strong repulsion to strong attraction. There is an additional stable gas-like phase in this regime in which the bosons form two-body bound states behaving like hard-core bosons.Comment: 10 pages, 1 figure, 2 tables, additional text on the stability of the super T-G gas-like stat

Toll-like receptor 4 and high-mobility group box-1 are involved in ictogenesis and can be targeted to reduce seizures

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