Results 91 to 100 of about 110,139 (229)

Bitcoin: investimento especulativo ou ativo financeiro [PDF]

, 2018
A presente dissertação tem como objetivo discutir o modo como a evolução da cotação diária da Bitcoin se articula com a dos mercados financeiros mais tradicionais, mormente com os mercados cambiais e os mercados bolsistas.
Tomé, Rui Filipe Teixeira
core  

The Power Mean Laplacian for Multilayer Graph Clustering [PDF]

arXiv, 2018
Multilayer graphs encode different kind of interactions between the same set of entities. When one wants to cluster such a multilayer graph, the natural question arises how one should merge the information different layers. We introduce in this paper a one-parameter family of matrix power means for merging the Laplacians from different layers and ...
arxiv  

Activos de renda fixa [PDF]

, 2013
Unidades Didácticas (Universidade de Santiago de Compostela). Análise Económica dos Mercados Financeiros I ; 4Esta unidade didáctica forma parte do curso de Análise Económica dos Mercados Financeiros I que se imparte no primeiro cuadrimestre do Máster en
Reboredo Nogueira, Juan Carlos
core  

Node Classification for Signed Social Networks Using Diffuse Interface Methods [PDF]

arXiv, 2018
Signed networks contain both positive and negative kinds of interactions like friendship and enmity. The task of node classification in non-signed graphs has proven to be beneficial in many real world applications, yet extensions to signed networks remain largely unexplored. In this paper we introduce the first analysis of node classification in signed
arxiv  

[Foreign capital and structural change in the Brazilian private health services market]. [PDF]

Cad Saude Publica, 2023
Kamia FD, Vargas MA.
europepmc   +1 more source

Testando empiricamente o CAPM condicional dos retornos esperados de carteiras dos mercados brasileiro, argentino e norte-americano Empirical test of the conditional CAPM model using expected returns of brazilian, argentine and north-american portfolios

REGE Revista de Gestão, 2007
Nas últimas décadas, o modelo CAPM tem despertado grande interesse na comunidade científica. Apesar das críticas, o aprimoramento do CAPM estático, que dá origem a novos modelos dinâmicos, traz maior segurança para o investidor ao longo do ciclo de ...
Elmo Tambosi Filho, Fabio Gallo Garcia, Luiz Alberto Bertucci   +2 more
doaj  

Análisis de procesos explosivos en el precio de los activos financieros: evidencia alrededor del mundo [PDF]

, 2015
This article analyzes different international share price indices for the period 1995-2013, in order to test for the existence and date of appearance of asset price explosions in the world’s stock markets.
Fernández-Mejía, Julián, Uribe, Jorge Mario   +1 more
core   +4 more sources

Spectral Clustering of Signed Graphs via Matrix Power Means [PDF]

arXiv, 2019
Signed graphs encode positive (attractive) and negative (repulsive) relations between nodes. We extend spectral clustering to signed graphs via the one-parameter family of Signed Power Mean Laplacians, defined as the matrix power mean of normalized standard and signless Laplacians of positive and negative edges.
arxiv  

Introdución: Economía financeira e valoración [PDF]

, 2013
Titulación: Máster en Economía: Organización industrial e mercados financeiros -- Materia: Análise Económica dos Mercados Financeiros IEsta unidade didáctica forma parte do curso de Análise Económica dos Mercados Financeiros I que se imparte no primeiro ...
Reboredo Nogueira, Juan Carlos
core  

An inverse problem for Moore-Gibson-Thompson equation arising in high intensity ultrasound [PDF]

arXiv, 2020
In this article we study the inverse problem of recovering a space-dependent coefficient of the Moore-Gibson-Thompson (MGT) equation, from knowledge of the trace of the solution on some open subset of the boundary. We obtain the Lipschitz stability for this inverse problem, and we design a convergent algorithm for the reconstruction of the unknown ...
arxiv