Results 21 to 30 of about 23,137,639 (216)

Tendencia y ciclos en la economía española: modelos, estimaciones y perspectivas para 1998-1999 [PDF]

, 1998
En este trabajo se analizan las implicaciones teóricas de diferentes modelos econométricos que pueden recoger la tendencia de las series macroeconómicas, concluyéndose que los modelos I(1,1), con una raíz unitaria y con rupturas aleatorias en la tasa de ...
Martínez, J. Manuel, Espasa, Antoni
core   +1 more source

Caminos hacia la aleatoriedad en la economía: no-linealidad emergente y caos en economía y finanzas

Estudios Económicos, 1993
Este trabajo muestra porqué la teoría no-lineal incluyendo la del caos, es importante en economía y finanzas. Se presentan dos definiciones de no-linealidad estocástica y se arguye que son útiles no sólo en pruebas de no-linealidad, sino también en la ...
William A. Brock
doaj   +1 more source

En El Perú se Pueden Modelar y Predecir los Rendimientos Accionarios?

Pensamiento Crítico, 2007
Las redes neuronales artificiales (RNA) se han convertido en un importante instrumento para modelar y predecir los rendimientos accionarios y por ende para evaluar la eficiencia del mercado de capitales (HEM).
Jorge Barrera Herrera
doaj   +1 more source

GROWTH CURVES OF MALE GUINEA PIGS (Cavia porcellus) OF THE PERUVIAN BREED THROUGH NON-LINEAR MODELS IN COLOMBIA

Tropical and Subtropical Agroecosystems
Background: Animal growth modeling is a tool that enables the acquisition of parameters to evaluate animal performance and predict outcomes for decision-making.
William Armando Tapie, Luis Miguel Giraldo, Sandra Lucía Posada-Ochoa, Jaime Ricardo Rosero-Noguera   +3 more
doaj   +1 more source

Introducción a los modelos logarítmicos lineales [PDF]

Papers. Revista de Sociologia, 1991
One of the problems in Sociology is the lack of the algebraic and statistical analysis methods as powerful in qualitative variables as in quantitative variables. During recent years, the popularity of techniques linked to the lineal logarithm processes has increased.
openaire   +5 more sources

Uso de la función Solver de Excel para el cálculo de la velocidad de corrosión de acero al carbono en una solución de NaCl al 3,5 % saturada de oxígeno, O2: Un tutorial práctico

Educación Química, 2018
Excel es un programa informático desarrollado y distribuido por Microsoft Corp. que permite realizar tareas contables y financieras mediante hojas de cálculo, forma parte de Microsoft Office y es utilizado en gran parte del mundo.
Marco Alfaro, Ignacio Alfaro
doaj   +1 more source

Comparative species distribution model framework for marine conservation and its application to loggerhead turtles in the Mediterranean

Conservation Biology, EarlyView.
Abstract Modeling species distributions in dynamic pelagic environments remains challenging, particularly for wide‐ranging and highly mobile species when there is limited guidance on model performance. This limitation constrains the effective use of species distribution models (SDMs) in marine conservation, where robust and transferable predictions are
E. Pasanisi, F. Maffucci, F. Atzori, M. Azzolin, I. Campana, L. Carosso, A. Castelli, M. Costantino, R. Crosti, L. David, N. Di‐Meglio, M. Farina, N. Fraija‐Fernández, O. Garcia‐Garin, M. Gazo, M. Gregorietti, F. Grossi, S. Hochscheid, R. Míguez‐Lozano, A. Moulins, D. S. Pace, M. Pecoraro, E. Pignata, J. A. Raga, M. Roul, E. Santini, G. Sarà, A. Scuderi, R. Teti, P. Tepsich, M. Vitale, M. Vighi, A. Arcangeli   +32 more
wiley   +1 more source

Assessing and quantifying variations in the functioning of marine food webs across scales

Conservation Biology, EarlyView.
Abstract The mismatch between the scale of ecological processes and management decisions represents a significant challenge in marine conservation. This misalignment can result in ineffective conservation measures and compromise the sustainability of marine ecosystems.
Izaskun Preciado, Irene Rabanal, Juan José Ortiz, María Ángeles Torres, Encarnación García, Oscar García‐Aguilar, José Miguel García Rebollo, Susana Garrido, Daniel Iglesias, François Le Loc'h, Hugo Mendes, Hannah Metaireau, Isabel Muñoz, Zaida Parra, Sandrine Serre, Miguel Vivas, Lucía López‐López   +16 more
wiley   +1 more source

Hydropower Regulation of Xingu River Discharge Structures Heterogeneous, Sector‐Specific Responses in Pacu Fisheries Along the River Continuum

Fisheries Management and Ecology, EarlyView.
ABSTRACT Hydroelectric dams are common in Amazonian tributaries under federal environmental licensing that requires long‐term fisheries monitoring. This study evaluated three fishing systems targeting “pacu” species (Serrasalmidae) in the Xingu River before, during, and after construction of the Belo Monte dam (2012–2023) across four river sectors ...
João Paulo Moura de Queiroz, Nelson de Almeida Gouveia, Marcelo Ândrade, Rafael Paiva de Oliveira Diaz, Claudemir Oliveira da Silva, Victoria J. Isaac   +5 more
wiley   +1 more source

When is the bait worth the risk? A mechanistic model of a compensatory ecological trap in seabirds

Functional Ecology, Volume 40, Issue 11, Page 3398-3421, November 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Ecological traps occur when organisms preferentially select habitats that reduce fitness. In seabird–fishery systems, fishery‐derived trophic subsidies can increase foraging success, reinforce habitat preference and indirectly enhance reproductive output or recruitment,
Cristóbal Anguita, Alejandro Simeone, Cristián F. Estades   +2 more
wiley   +1 more source