Mostrando ítems 541-560 de 2306

    • UrBis: a mobile crowdsourcing platform for sustainable social and urban research in Mexico 

      Ruíz Correa, Salvador; Hernandez Huérfano, Emilio Ernesto; Álvarez Rivera, Leonardo; Islas López, Victor E.; Ramírez-Sánchez, V. A.; González Abundes, Mariana; Hernández Castañeda, Ma. de Lourdes; Carrillo Sánchez, Elizabeth; Hasimoto Beltrán, Rogelio; Plata Ortega, Ivonne (Springer, 2018)
      "Recently, the United Nations Human Settlements Program (UN-HABITAT) stated that cities in Mexico are steadily expanding, sometimes outstripping the rise in population by two-fold due to urban sprawl, and that 85% of the ...
    • Happy and agreeable?: multi-label classification of impressions in social video 

      Chávez Martínez, Gilberto; Ruíz Correa, Salvador; Gatica Pérez, Daniel (ACM, 2015)
      "The mobile and ubiquitous nature of conversational social video has placed video blogs among the most popular forms of online video. For this reason, there has been an increasing interest in conducting studies of human ...
    • The young and the city: crowdsourcing urban awareness in a developing country 

      Ruíz Correa, Salvador; Santani, Darshan; Gatica Pérez, Daniel (ICST, 2014)
      "We present a crowdsourcing study that investigates impressions of urban spaces by young inhabitants in a city in the developing world. Our goal is to obtain collective perceptions from the actual inhabitants of the city ...
    • Insiders and outsiders: comparing urban impressions between population groups 

      Santani, Darshan; Ruíz Correa, Salvador; Gatica Pérez, Daniel (ACM, 2017)
      "There is a growing interest in social and urban computing to employ crowdsourcing as means to gather impressions of urban perception for indoor and outdoor environments. Previous studies have established that reliable ...
    • Looking at cities in Mexico with crowds 

      Santani, Darshan; Ruíz Correa, Salvador; Gatica Pérez, Daniel (ACM, 2015)
      "Mobile and social technologies are providing new opportunities to document, characterize, and gather impressions of urban environments. In this paper, we present a study that examines urban perceptions of three cities in ...
    • SenseCityVity: mobile crowdsourcing, urban awareness, and collective action in Mexico 

      Ruíz Correa, Salvador; Santani, Darshan; Ramírez Salazar, Beatriz; Ruíz Correa, Itzia; Rendón Huerta, Fátima Alba; Olmos Carrillo, Carlo; Sandoval Mexicano, Carmina Brisa; Arcos García, Humberto Ángel; Hasimoto Beltrán, Rogelio; Gatica Pérez, Daniel (IEEE, 2017)
      "The SenseCityVity project aims to engage youth in Guanajuato, Mexico, helping them investigate, document, and reflect on urban problems though mobile crowdsourcing. An Urban Data Challenge encourages them to collect ...
    • What TripAdvisor Can´t Tell: Crowdsourcing Urban Impressions for Whole Cities 

      Gatica Pérez, Daniel; Ruíz Correa, Salvador; Santani, Darshan (L'Oeil d'Or, 2016)
      "In the context of a number of emerging opportunities for citizen participation in Latin America, we present an overview of the SenseCityVity project developed in Mexico. The project goals are the design, implementation, ...
    • Evaluación de la Disponibilidad y Demanda de Agua, en la Zona Metropolitana de San Luis Potosí. 

      HERNÁNDEZ CONSTANTINO, NORA ALICIA (2020-05-11)
      "En la Zona Metropolitana de San Luis Potosí se ha incrementado la demanda del agua subterránea en las últimas décadas, para el desarrollo y abastecimiento de las actividades socio-económicas. Esta Zona, actualmente, tiene ...
    • Estratigrafía y vulcanología de la Toba Xoxoctic (Pleistoceno superior), caldera de Los Humeros, Puebla 

      Téllez Vizcaíno, Roberto Hassan (2020-05-25)
      "Un paso fundamental en el entendimiento de la evolución de las calderas es, entre otros, la definición estratigráfica y de historia eruptiva del sistema. El Complejo Volcánico de Los Humeros se ubica en el sector oriental ...
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    • Optimizing the differential pulse anodic stripping voltammetry method with hanging mercury electrode for thallium (I) determination in the presence of lead (II) and copper (II) for application in contaminated soils 

      Cruz Hernández, Yusniel; Villalobos, Mario; González Chavez, José Luz; Martínez Villegas, Nadia Valentina (Universidad Nacional Autónoma de México, Universidad Autónoma de Tlaxcala, Universidad Veracruzana, Universidad Autónoma de Occidente, Centro de Ciencias de la Atmósfera, 2019)
      "The conditions that allow thallium (I) determination in the presence of lead (II) and copper (II) were optimized without prior separation of these cations, using a previously developed differential pulse anodic stripping ...
    • Water poverty index in arid zones: the barril aquifer, Santo Domingo, San Luis Potosí, México 

      López Álvarez, Briseida; Rizo Fernández, Zenón; Ramos Leal, José Alfredo; Morán Ramírez, Janete; Almanza Tovar, Oscar Guadalupe (Universidad Nacional Autónoma de México, Universidad Autónoma de Tlaxcala, Universidad Veracruzana, Universidad Autónoma de Occidente, Centro de Ciencias de la Atmósfera, 2019)
      "In Mexico, 73.7 % of the territory is made up of arid and semi-arid zones where groundwater is the main source of supply for the population's various activities. The municipality of Santo Domingo is in such a case, with ...
    • Geology of the late Pliocene - Pleistocene Acoculco caldera complex, eastern Trans-Mexican Volcanic Belt (México) 

      Avellán López, Denis Ramón; Macías, José Luis; Layer, Paul W; Cisneros Maximo, Guillermo; Sánchez Nuñez, Juan Manuel; Gómez Vasconcelos, Martha Gabriela; Pola Villaseñor, Antonio; Sosa Ceballos, Giovanni; García Tenorio, Felipe; Reyes Agustín, Gabriela; Osorio Ocampo, Lady Susana; García Sánchez, Laura; Mendiola, Irma Fabiola; Marti, Joan; López Loera, Héctor; Benowitz, Jeff A (Taylor & Francis LTD, 2019)
      "We present a new 1:80,000-scale geologic map of the Acoculco caldera (Ac) located between the states of Puebla and Hidalgo in eastern Mexico. The map, encompassing an area of 856 km(2), is grounded on an ArcMap data set ...
    • Geology of the late Pleistocene Tres Vírgenes Volcanic Complex, Baja California Sur (México) 

      Avellán López, Denis Ramón; Macías, José Luis; Arce, José Luis; Saucedo Girón, Ricardo; Garduño Monroy, Víctor Hugo; Jiménez Haro, Adrian; Sosa Ceballos, Giovanni; Cisneros Maximo, Guillermo; Bernal, Juan Pablo; Layer, Paul W; García Sánchez, Laura; Reyes Agustín, Gabriela; Rangel, Elizabeth; Navarrete Pacheco, José Antonio; López Loera, Héctor (Taylor & Francis LTD, 2019)
      "The geological map of the Tres Vírgenes Volcanic Complex (TVVC) Baja California Sur, México consists of three northeast-southwest aligned stratovolcanoes named from older to younger, El Viejo, El Azufre, and La Virgen. ...
    • Role of unsaturated soil above a heavily contaminated aquifer in the natural attenuation of arsenic 

      Martínez Villegas, Nadia Valentina; Gómez Hernández, Andrea Del Pilar; Zamora Morales, Armando; Hernández Martínez, Jejanny Lucero; Meza Figueroa, Diana María; SenGupta, Bhaskar (EDP Sciences, 2019)
      "Large attenuation of arsenic is observed in a shallow aquifer in central Mexico, where the concentration decreases from 91.5 to 11.3 mg/L, over 1.3 km horizontal distance. To investigate possible mechanisms of attenuation ...
    • Geomagnetic anomalies in the area of Popocatepetl volcano, Mexico 

      Kotzarenko, Anatoliy; Yutsis, Vsevolod; Grimalsky, Volodymyr; Koshevaya, Svetlana; Kotsarenko, Yu (Universidad Nacional Autónoma de México, Instituto de Geofísica, 2019)
      "Geomagnetic anomalies of different nature observed in the area of Popocatepetl volcano are presented and analyzed in the current paper. The analysis reveals some anomalies considered to be of local volcanic origin: the ...
    • Fechamiento arqueomagnético de flujos de lava del Holoceno provenientes del volcán Ceboruco 

      Cifuentes Nava, Gerardo; Cervantes Solano, Miguel Angel; Díaz Ortega, Ulises Demian; Goguitchaichvili, Avto; Morales Contreras, Juan; López Loera, Héctor; Rosas Elguera, José Guadalupe; Delgado Granados, Hugo; Cejudo Ruíz, Fredy Rubén; Urrutia Fucugauchi, Jaime (Universidad Nacional Autónoma de México, Instituto de Geología, 2019)
      "En el presente trabajo se aplicó el método de fechamiento arqueomagnético a rocas provenientes de cinco flujos de lava que pertenecen al campo volcánico Ceboruco en Jalisco, en el occidente de México, utilizando el modelo ...
    • Estudio magnético integral de flujos de lava del volcán Xitle: implicaciones arqueológicas sobre el abandono de Cuicuilco 

      Cervantes Solano, Miguel Angel; Cifuentes Nava, Gerardo; Caballero Miranda, Cecilia Irene.; Goguitchaichvili, Avto; Morales Contreras, Juan; López Loera, Héctor; Delgado Granados, Hugo; Urrutia Fucugauchi, Jaime (Universidad Nacional Autónoma de México, Instituto de Geología, 2019)
      "El volcán Xitle forma parte del campo volcánico Cuaternario Chichinautzin, localizado al sur del Valle de México. Sus lavas se emplazaron sobre el centro arqueológico de Cuicuilco, uno de los primeros asentamientos urbanos ...
    • Identification of the hydrogeochemical processes and assessment of groundwater quality, using multivariate statistical approaches and water quality index in a wastewater irrigated region 

      Marín Celestino, Ana Elizabeth; Ramos Leal, José Alfredo; Martínez Cruz, Diego Armando; Tuxpan Vargas, José; De Lara Bashulto, Josue; Morán Ramírez, Janete (MDPI, 2019)
      "Groundwater quality and availability are essential for human consumption and social and economic activities in arid and semiarid regions. Many developing countries use wastewater for irrigation, which has in most cases ...
    • Metodología polínica ambiental (MEPAM) para estudios hidrogeológicos en zonas cársticas. Caso Joya de Luna-Guaxcamá, S.L.P. 

      Torres Rivera, Sonia; Ramos Leal, José Alfredo; Rodríguez Robles, Ulises; Carranco Lozada, Simón Eduardo; Torres Hernández, José Ramón (Universidad Nacional Autónoma de México, Centro de Geociencias, 2019)
      "En la región central de México existen zonas con extensos afloramientos de rocas calcáreas plegadas formando sistemas montañosos con intenso desarrollo cárstico. El abastecimiento de agua en esta región se logra en una ...