Results 41 to 50 of about 155,860 (135)
Cadernos de Saúde Pública, 2004 The ecology of anopheline species (Diptera, Culicidae) was studied in the vicinity of the Serra da Mesa Reservoir, State of Goiás, Brazil. Climatic factors and frequency of anopheline populations were analyzed. Bimonthly human-bait and Shannon trap captures were conducted for 36 consecutive months (January 1997 through December 1999).
Anthony Érico Guimarães +4 more
openaire +1 more source
Sobre la ecología social de las instituciones de educación superior en la Cañada oaxaqueña [PDF]
arXiv, 2015 We make some observations regarding the competition between Universidad de la Ca\~nada (Unca) and other universities, using the Lotka-Volterra model, for the Informatics major, applying ideas introduced by McPherson in 1983. As a consequence, some strategies are suggested for Unca to adopt.
arxiv
Sur les champs de vecteurs invariants sur l'espace tangent d'un espace symétrique [PDF]
arXiv, 2013 Let $G$ be a real reductive connected Lie group and $\sigma$ an involution of $G$. Let $H$ denote the identity component of the group of fixed points of $\sigma$, $\mathfrak g$ the Lie algebra of $G$ and $\mathfrak q$ the -1 eigenspace of $\sigma$ in $\mathfrak g$. The group $H$ acts naturally on $\mathfrak q$ via the adjoint representation.
arxiv
Significado epidemiológico dos criadouros de Aedes albopictus em bromélias
Revista de Saúde Pública, 1998 Relata-se o encontro de formas imaturas de Aedes albopictus em bromélias. Discute-se em que circunstâncias estas plantas poderiam ser epidemiologicamente consideradas como recipientes naturais ou artificiais. Destaca-se o poder de difusão deste vetor que
Oswaldo Paulo Forattini +4 more
doaj +3 more sources
Emergence, self-organization and network efficiency in gigantic termite-nest-networks build using simple rules [PDF]
arXiv, 2015 Termites, like many social insects, build nests of complex architecture. These constructions have been proposed to optimize different structural features. Here we describe the nest network of the termite Nasutitermes ephratae, which is among the largest nest-network reported for termites and show that it optimizes diverse parameters defining the ...
arxiv
Revista de Saúde Pública, 1995 Objetivando-se conhecer as espécies de Culicidae aptas a colonizarem ambiente de um ribeirão com mata ciliar reduzida e localizado na região Sul do Brasil, foram realizadas capturas com auxílio de rede para coleta de insetos aquáticos. Foram apanhadas as
Lopes José, Lozovei Ana L.
doaj +3 more sources
Changing Fashion Cultures [PDF]
arXiv, 2017 The paper presents a novel concept that analyzes and visualizes worldwide fashion trends. Our goal is to reveal cutting-edge fashion trends without displaying an ordinary fashion style. To achieve the fashion-based analysis, we created a new fashion culture database (FCDB), which consists of 76 million geo-tagged images in 16 cosmopolitan cities.
arxiv
Familles de polynomes liees aux courbes modulaires X_1(l) unicursales et points rationnels non-triviaux de courbes elliptiques quotient [PDF]
, 2003 Soit l un entier et E_{c,l} la famille de Kubert des courbes elliptiques definies sur Q munies d'un point rationnel A d'ordre l. On note F_{c,l} la courbe elliptique quotient de E_{c,l} par le groupe engendre' par A, et f_l l'isogenie de E_{c,l} sur F_{c,l}.
arxiv +1 more source
A unified matrix model including both CCA and F matrices in multivariate analysis: the largest eigenvalue and its applications [PDF]
arXiv, 2016 Let $\bbZ_{M_1\times N}=\bbT^{\frac{1}{2}}\bbX$ where $(\bbT^{\frac{1}{2}})^2=\bbT$ is a positive definite matrix and $\bbX$ consists of independent random variables with mean zero and variance one. This paper proposes a unified matrix model $$\bold{\bbom}=(\bbZ\bbU_2\bbU_2^T\bbZ^T)^{-1}\bbZ\bbU_1\bbU_1^T\bbZ^T,$$ where $\bbU_1$ and $\bbU_2$ are ...
arxiv
Mosquitos de ambientes peri e extradomiciliares na região sul do Brasil
Revista de Saúde Pública, 1994 Durante um ano de coletas de culicídeos no Município de Querência do Norte, no Estado do Paraná, Brasil, utilizando-se isca humana e armadilhas de Falcão, investigou-se a composição faunística, a sazonalidade, o horário de maior densidade, a afinidade ao
Teodoro Uelsei +8 more
doaj