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Study of mixed integer programming models for the concrete delivery problem by Hernández López, Óscar Alejandro

“…Contributions and Conclusions: The main contribution of this thesis is two new compact MIP models. These formulations, based on a graph representation, reduce the number of used variables and restrictions involved in the problem and allow us to solve to optimality more instances than the mathematical models that have been presented in the literature for this problem…”
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Study of mixed integer programming models for the concrete delivery problem by Hernández López, Óscar Alejandro

“…Contributions and Conclusions: The main contribution of this thesis is two new compact MIP models. These formulations, based on a graph representation, reduce the number of used variables and restrictions involved in the problem and allow us to solve to optimality more instances than the mathematical models that have been presented in the literature for this problem…”
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Teleconexiones del fenómeno ENSO a la precipitación mensual en México by Méndez González, Jorge, Návar Cháidez, José de Jesús, González Rodríguez, Humberto, Treviño Garza, Eduardo Javier

“…Las correlaciones positivas indican un incremento de precipitación en medianas y altas latitudes por las regiones costeras, mientras que las correlaciones negativas se registran hacia el Sur. …”
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Estudio climático de dos invernaderos en el estado de Nuevo León, México by Leal Iga, Javier

“…Para Marín, se concluye que el problema climático en esa zona se debe a las temperaturas altas durante el verano. Del estudio se propone el uso de un muro húmedo y aumentar la ventilación forzada por medio de abanicos, además de continuar con los estudios en dicho invernadero, para establecer los niveles de operación que hagan rentable el uso del invernadero.…”
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Determinantes de las calificaciones crediticias de la deuda pública municipal en México by Chapa Cantú, Joana Cecilia, Treviño Villarreal, María de Lourdes

“…Asimismo, que un menor servicio de deuda relativo al ahorro interno, un mayor PIB per cápita estatal, una mayor proporción de transferencias estatales y federales y un mayor ahorro interno respecto a ingresos fiscales ordinarios están asociados con calificaciones crediticias más altas. Palabras clave: Calificaciones crediticias, Finanzas públicas, Gobiernos locales, Deuda municipal.…”
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El papel de la información en el mercado del crédito al consumo by Gámez Garza, Cesáreo

“…Esto incrementa el riesgo implícito de los oferentes de crédito, lo cual a su vez se traduce en mayores costos de transacción, altas tasas de morosidad y cartera vencida y en una mayor tasa de interés para este tipo de créditos. …”
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Documentalia by Derbez García, Edmundo

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Relocation of Dodecaseta McCammon & Stull, 1978 (Annelida, Capitellidae) in Notodasus Fauchald, 1972 by García Garza, María Elena, De León González, Jesús Ángel, Harris, Leslie H.

“…Two species are redescribed based on examination of type material and three new combinations are proposed: Notodasus oraria (McCammon & Stull, 1978), N. eibyejacobseni (Green, 2002). …”
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Complex dynamical network control for trajectory tracking using delayed recurrent neural networks by Pérez Padrón, José Paz, Pérez Padrón, Joel, Flores Hernández, Ángel, Arroyo Garza, Santiago

“…In this paper, the problem of trajectory tracking is studied. Based on the V-stability and Lyapunov theory, a control law that achieves the global asymptotic stability of the tracking error between a delayed recurrent neural network and a complex dynamical network is obtained. …”
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Desarrollo de interfaz para lectura y almacenamiento de parámetros can bajo la norma SAE-J1939 by Ramírez Cuevas, Armando

“…A través de este primer capítulo y para enriquecer las bases técnicas del lector se abordarán definiciones clave relacionadas al protocolo CAN J1939, al hardware que se utiliza, al almacenamiento y así mismo se presentará una breve reseña de la industria automotriz de camiones pesados en México. …”
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A GRASP-Tabu Heuristic Approach to Territory Design for Pickup and Delivery Operations for Large-Scale Instances by González Ramírez, Rosa G., Smith, Neale R., Askin, Ronald G., Camacho Vallejo, José Fernando, González Velarde, José Luis

“…Criteria to be optimized are to balance workload content among the districts and to create districts of compact shape. A solution approach based on a hybrid procedure that combines elements of GRASP and Tabu Search (TS) is proposed to solve large-scale instances. …”
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New records of invasive hammerhead flatworms (Platyhelminthes, Geoplanidae, Bipaliinae) from Mexico using a citizen science platform, with an identification key to the species foun... by De Luna, Manuel, García Barrios, Roberto, Valle, Paola, Boll, Piter Kehoma

“…We present new records of the invasive hammerhead flatworms Bipalium kewense Moseley, 1878 and Bipalium vagum Jones & Sterrer, 2005 (Platyhelminthes, Geoplanidae, Bipaliinae) from several states in Mexico based on iNaturalist and two vouchered specimens. …”
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Desarrollo de interfaz para lectura y almacenamiento de parámetros can bajo la norma SAE-J1939 by Ramírez Cuevas, Armando

“…A través de este primer capítulo y para enriquecer las bases técnicas del lector se abordarán definiciones clave relacionadas al protocolo CAN J1939, al hardware que se utiliza, al almacenamiento y así mismo se presentará una breve reseña de la industria automotriz de camiones pesados en México. …”
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Fauna silvestre de la Reserva de la Biosfera de Mapimí: historia natural y retos para su conservación by Montero-Bagatella, Sandra H., Durán-Antonio, Jessica, Andrade-Ponce, Gabriel P., Ventura-Rojas, Perla D., Correa-Pérez, Alexis, Gallina, Sonia, González-Romero, Alberto

“…Es un sistema desértico en el que a pesar de las las limitantes hídricas y/o altas temperaturas, se presenta una importante diversidad de vertebrados, siendo las aves y mamíferos los de mayor riqueza. …”
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Micro- and nanoporous materials capable of absorbing solvents and oils reversibly: the state of the art by Cortez, Javier S. Acevedo, Kharisov, Boris I., Quezada, Thelma E. Serrano, Hernández García, Tomás Constantino

“…These absorbents can be classified based on their characteristics of recyclability into irreversible and reversible ones. …”
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First observations of oblique ionospheric sounding chirp signal in Mexico by Sergeeva, Maria A., Gonzalez Esparza, J. Americo, Blagoveshchensky, D. V., Maltseva, O.A., Chernov, A. G., Corona Romero, Pedro, De la Luz, Victor, Mejía Ambriz, Julio C., González, L. Xavier, Romero Hernández, Esmeralda, Rodríguez Martínez, Marisol, Aguilar Rodriguez, Ernesto, Andrade, Ernesto, Villanueva, Pablo, Gatica Acevedo, V. J.

“…The diurnal ionospheric variations by OIS signal confirm the results based on GNSS data in the Mexican region. The best HF radio propagation conditions along the considered path are during morning and daytime hours. …”
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Importance of operational management to achieve sustaintability in a smb by Pérez Astorga, Steffy, Olvera Muñoz, Martín Alejandro, Reynosa Barbosa, Angélica

“…This paper shows a study we made to benefit small companies in general, it based in the problems that a SMB had in the last years (CIEM). …”
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The use of mobile-assited language learning to enhance young adult EFL students' oral production by González González, Laura Leticia

“…This study takes place at a school where English courses are based on a communicative approach, but even with that emphasis, students continue to have difficulties to communicate in the target language.…”
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Diseño de un plan de sucesión basado en un modelo de competencias para el personal clave de una empresa constructora by Ayala Treviño, Jesica Abigail

“…Based on the contributions made by the various authors and subject matter experts and recognizing the importance for organizations to have a strategic human resource planning that takes into consideration the Succession Planning, this research aims to solve one of the major problems affecting a construction company in Monterrey, Nuevo León, by not having a succession plan for the management of human talent, allowing it to detect and retain staff with the skills and abilities needed to fill a certain key position in each of the directions that make it up.…”
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The collision of masses and the way prices react to expectations by Chávez Guzmán, Luis

“…This study intents to establish taxonomy of expectations based on the different types of impacts a body can receive, these can be: a blow without penetration, a blow that penetrates and stays in the body, a blow that goes through the body without affecting the body mass, and lastly, a blow that reduces but does not penetrate the body mass.…”
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