Results 61 to 70 of about 45,162 (227)

Estudio de redes neuronales para el pronóstico de la demanda de asignaturas

open access: yesRevista Facultad de Ingeniería, 2019
La planeación de cursos de un centro educativo o universidad está compuesta por múltiples problemas complejos como lo es la asignación de horarios para los alumnos, salones y profesores para cada asignatura.
Jesús David Terán-Villanueva   +6 more
doaj   +1 more source

Water Parameters and Hydrodynamics in Rivers and Caves Hosting Astyanax mexicanus Populations Reveal Macro‐, Meso‐ and Microhabitat Characteristics

open access: yesEcology and Evolution, Volume 16, Issue 1, January 2026.
From 2009 to 2025, we have recorded the physicochemical parameters of the water and the hydrological regimes at localities hosting Astyanax mexicanus cavefish and surface fish populations in Mexico. Sampling 13 caves and 30 surface stations revealed strong signatures of the two macrohabitats, but also significant differences in specific water ...
Laurent Legendre   +5 more
wiley   +1 more source

Tracer Hydrology Practices, Challenges, and Opportunities Across Latin America and the Caribbean

open access: yesHydrological Processes, Volume 40, Issue 1, January 2026.
Tracer monitoring characteristics across the LAC region: overview of sampled hydrologic systems, commonly used tracers, routine and event‐based sampling strategies, integration with hydrometric measurements, and monitoring durations. ABSTRACT Tracer hydrology in Latin America and the Caribbean has made significant progress in recent decades, largely ...
Ricardo Sánchez‐Murillo   +47 more
wiley   +1 more source

An annotated list of the centipedes (Chilopoda) in the National Collection of Arachnids, Instituto de Biología, Universidad Nacional Autónoma de México : Addendum: Scutigeromorpha and Scolopendromorpha [PDF]

open access: yes, 2013
This addendum to “An annotated list of the centipedes (Chilopoda) in The National Collection of Arachnids (Colección Nacional de Arácnidos, CNAN), Instituto de Biología, Universidad Nacional Autónoma de México” (México City), is based on new samples ...
Cupul-Magaña, Fabio Germán
core  

Climate change in NE Mexico: influence of the North Atlantic Oscillation

open access: yesInvestigaciones Geográficas, 2012
An exploratory analysis of temperature, precipitation and evaporation records, in five localities of Tamaulipas state (NE Mexico), spanning from about 30s decade of XX century until first years of the XXI, is made by means of multivaried statistical ...
Norma Sánchez Santillán   +3 more
doaj  

Coluber constrictor [PDF]

open access: yes, 1978
Number of Pages: 4Integrative BiologyGeological ...
Wilson, Larry David
core   +1 more source

Identificación de arbustos y material vegetativo que consumen cabras en el cuarto distrito de Tamaulipas

open access: yesAIA Avances en Investigación Agropecuaria, 2018
En Tamaulipas la región del altiplano comprende los municipios de Tula, Jaumave, Palmillas y Miquihuana se desarrolla una parte de la caprinocultura de la entidad.
Rafael Guarneros-Altamirano   +2 more
doaj  

Integer Programming, low complexity Heuristics, and Gaussian instances for the Internet Shopping Optimization Problem with multiple item Units (ISHOP-U) [PDF]

open access: yesJournal of Universal Computer Science
The Internet Shopping Optimization Problem with multiple item Units (ISHOP-U) is a recently proven NP-Hard variant of the classical ISHOP, which considers buying more than one unit of the same product.
Fernando Ornelas   +7 more
doaj   +3 more sources

Ecological Niche Differences Underlie the Assembly of Endemic Birds in Acrobiont Forests of Northern Mesoamerica

open access: yesJournal of Biogeography, Volume 53, Issue 1, January 2026.
ABSTRACT Aim The study of the structure of species assemblages has typically assumed that similar environments share common species; however, interacting biogeographic and phylogenetic processes are equally important. The understanding that ecological processes operate at different spatial scales to shape species assemblages led to the concept of ...
Luis A. Sánchez‐González   +2 more
wiley   +1 more source

Producción de carne en pastoreo y suplementación en el sur de Tamaulipas. I utilización del forraje henificado de la misma . Pradera mas melaza urea

open access: yesRevista Mexicana de Ciencias Pecuarias, 1992
EI estudio se realizó en el Campo Experimental de Aldama, Tamaulipas, México, con clima cálido seco BS1. EI objetivo fue evaluar el potencial de producción de carne de los zacates Transvala (Digitaria decumbens), Angleton (Dichanthium aristatum) y Santo ...
Miguel Angel González Padrón   +2 more
doaj  

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