Artículos: Envíos recientes

Mostrando ítems 1441-1460 de 4223

    • Evolution of marketing in the university sector [Evolución del mercadeo en el sector universitario] 

      Gómez-Bayona L.; Arrubla-Zapata J.P.
      In order to understand what happens with the discipline of marketing and applicability in the education sector, this paper is constructed that aims to identify the evolution of marketing in the university sector from ...

    • Emotional Networked maps from EEG signals 

      Gomez A.; Quintero O.L.; Lopez-Celani N.; Villa L.F.
      The EEG has showed that contains relevant information about recognition of emotional states. It is important to analyze the EEG signals to understand the emotional states not only from a time series approach but also ...

    • Electronic and optical properties of an electro-magnetic non-uniform narrow quantum ring under repulsive scattering centre 

      Salazar-Santa J.D.; Mora-Ramos M.E.; Marín J.H.
      Non-uniform height semiconductor quantum rings are studied in order to determine their electronic and optical absorption properties. Theoretical modelling of the structure includes an analytical description of the non-regular ...

    • Electron-related nonlinear optical properties of cylindrical quantum dot with the Rosen-Morse axial potential 

      Ungan F.; Bahar M.K.; Pal S.; Mora-Ramos M.E.; Mora-Ramos M.E.
      We present a theoretical study on the effects of intense laser field (ILF) and static electric field on the linear and nonlinear optical properties of a cylindrical quantum dot with Rosen-Morse axial potential under the ...

    • Enhanced geothermal systems: Review and analysis of case studies 

      Palacio-Villa M.A.; Blessent D.; López-Sánchez J.; Moreno D.
      This article reviews the characteristics of the EGS, sources of clean energy that promise to be an alternative to face the problems related to global warming caused by the use of fossil fuels like oil and natural gas. ...

    • Economic openness and trade policy: Struggles of the dairy sector in colombia [Apertura económica y política comercial: Estudio del sector lácteo y sus dificultades en colombia] 

      Baena Rojas J.J.; Cano J.A.; Duque Giraldo M.
      Since the economic openness in Colombia, some economic sectors have experienced significant challenges to compete with foreign products, as is the case of the dairy sector. Thus, this article provides an analysis between ...

    • Drivers of forest loss in a megadiverse hotspot on the pacific Coast of Colombia 

      Anaya J.A.; Gutiérrez-Vélez V.H.; Pacheco-Pascagaza A.M.; Palomino-Ángel S.; Han N.; Balzter H.
      Tropical forests are disappearing at unprecedented rates, but the drivers behind this transformation are not always clear. This limits the decision-making processes and the effectiveness of forest management policies. In ...

    • Effect of sediment management decision on a hydropower plant value [Incidencia de la decisión de manejo de sedimentos en el valor de una central hidroeléctrica] 

      Polanco J.A.; Ramírez-Atehortúa F.H.; Montes-Gómez L.F.; Botero-Hernández B.A.; Barco M.O.
      Sedimentation reduces the useful life of reservoirs and the value of hydropower plants. The aim is to determine the effect of sediment management decisions on the value of a plant. First, management alternatives are ranked ...

    • Do sustainability practices influence university quality? A Colombian case study 

      Hernandez-Diaz P.M.; Polanco J.-A.; Castaño S.M.
      Purpose: This paper aims to know how university’s strategic managers, from botacademic and administrative systems, perceive the relationship between sustainability and accreditation as sustainability incorporation and the ...

    • Distribution of chemical forms of mercury in sediments from abandoned ponds created during former gold mining operations in Colombia 

      Gutiérrez-Mosquera H.; Marrugo-Negrete J.; Díez S.; Morales-Mira G.; Montoya-Jaramillo L.J.; Jonathan M.P.
      Total mercury (THg) and methylmercury (MeHg) were studied in sediments from 27 abandoned gold mining ponds (AGMPs) through small-scale artisanal gold mining in the district of San Juan in Chocó region of Colombia. The AGMPs ...

    • Direct measurement of the muonic content of extensive air showers between 2× 1017 and 2×1018 eV at the Pierre Auger Observatory 

      Aab A.; Abreu P.; Aglietta M.; Albury J.M.; Allekotte I.; Almela A.; Alvarez Castillo J.; Alvarez-Muñiz J.; Anastasi G.A.; Anchordoqui L.; Andrada B.; Andringa S.; Aramo C.; Araújo Ferreira P.R.; Asorey H.; Assis P.; Avila G.; Badescu A.M.; Bakalova A.; Balaceanu A.; Barbato F.; Barreira Luz R.J.; Becker K.H.; Bellido J.A.; Berat C.; Bertaina M.E.; Bertou X.; Biermann P.L.; Bister T.; Biteau J.; Blanco A.; Blazek J.; Bleve C.; Boháčová M.; Boncioli D.; Bonifazi C.; Bonneau Arbeletche L.; Borodai N.; Botti A.M.; Brack J.; Bretz T.; Briechle F.L.; Buchholz P.; Bueno A.; Buitink S.; Buscemi M.; Caballero-Mora K.S.; Caccianiga L.; Calcagni L.; Cancio A.; Canfora F.; Caracas I.; Carceller J.M.; Caruso R.; Castellina A.; Catalani F.; Cataldi G.; Cazon L.; Cerda M.; Chinellato J.A.; Choi K.; Chudoba J.; Chytka L.; Clay R.W.; Cobos Cerutti A.C.; Colalillo R.; Coleman A.; Coluccia M.R.; Conceição R.; Condorelli A.; Consolati G.; Contreras F.; Convenga F.; Covault C.E.; Dasso S.; Daumiller K.; Dawson B.R.; Day J.A.; de Almeida R.M.; de Jesús J.; de Jong S.J.; De Mauro G.; de Mello Neto J.R.T.; De Mitri I.; de Oliveira J.; de Oliveira Franco D.; de Souza V.; Debatin J.; del Río M.; Deligny O.; Dhital N.; Di Matteo A.; Díaz Castro M.L.; Dobrigkeit C.; D’Olivo J.C.; Dorosti Q.; dos Anjos R.C.; Dova M.T.; Ebr J.; Engel R.; Epicoco I.; Erdmann M.; Escobar C.O.; Etchegoyen A.; Falcke H.; Farmer J.; Farrar G.; Fauth A.C.; Fazzini N.; Feldbusch F.; Fenu F.; Fick B.; Figueira J.M.; Filipčič A.; Freire M.M.; Fujii T.; Fuster A.; Galea C.; Galelli C.; García B.; Garcia Vegas A.L.; Gemmeke H.; Gesualdi F.; Gherghel-Lascu A.; Ghia P.L.; Giaccari U.; Giammarchi M.; Giller M.; Glombitza J.; Gobbi F.; Golup G.; Gómez Berisso M.; Gómez Vitale P.F.; Gongora J.P.; González N.; Goos I.; Góra D.; Gorgi A.; Gottowik M.; Grubb T.D.; Guarino F.; Guedes G.P.; Guido E.; Hahn S.; Halliday R.; Hampel M.R.; Hansen P.; Harari D.; Harvey V.M.; Haungs A.; Hebbeker T.; Heck D.; Hill G.C.; Hojvat C.; Hörandel J.R.; Horvath P.; Hrabovský M.; Huege T.; Hulsman J.; Insolia A.; Isar P.G.; Johnsen J.A.; Jurysek J.; Kääpä A.; Kampert K.H.; Keilhauer B.; Kemp J.; Klages H.O.; Kleifges M.; Kleinfeller J.; Köpke M.; Kukec Mezek G.; Lago B.L.; LaHurd D.; Lang R.G.; Leigui de Oliveira M.A.; Lenok V.; Letessier-Selvon A.; Lhenry-Yvon I.; Lo Presti D.; Lopes L.; López R.; López Casado A.; Lorek R.; Luce Q.; Lucero A.; Machado Payeras A.; Malacari M.; Mancarella G.; Mandat D.; Manning B.C.; Manshanden J.; Mantsch P.; Mariazzi A.G.; Mariş I.C.; Marsella G.; Martello D.; Martinez H.; Martínez Bravo O.; Mastrodicasa M.; Mathes H.J.; Matthews J.; Matthiae G.; Mayotte E.; Mazur P.O.; Medina-Tanco G.; Melo D.; Menshikov A.; Merenda K.-D.; Michal S.; Micheletti M.I.; Miramonti L.; Mockler D.; Mollerach S.; Montanet F.; Morello C.; Mostafá M.; Müller A.L.; Muller M.A.; Müller S.; Mussa R.; Muzio M.; Namasaka W.M.; Nellen L.; Niculescu-Oglinzanu M.; Niechciol M.; Nitz D.; Nosek D.; Novotny V.; Nožka L.; Nucita A.; Núñez L.A.; Palatka M.; Pallotta J.; Panetta M.P.; Papenbreer P.; Parente G.; Parra A.; Pech M.; Pedreira F.; Pȩkala J.; Pelayo R.; Peña-Rodriguez J.; Perez Armand J.; Perlin M.; Perrone L.; Peters C.; Petrera S.; Pierog T.; Pimenta M.; Pirronello V.; Platino M.; Pont B.; Pothast M.; Privitera P.; Prouza M.; Puyleart A.; Querchfeld S.; Rautenberg J.; Ravignani D.; Reininghaus M.; Ridky J.; Riehn F.; Risse M.; Ristori P.; Rizi V.; Rodrigues de Carvalho W.; Rodriguez Rojo J.; Roncoroni M.J.; Roth M.; Roulet E.; Rovero A.C.; Ruehl P.; Saffi S.J.; Saftoiu A.; Salamida F.; Salazar H.; Salina G.; Sanabria Gomez J.D.; Sánchez F.; Santos E.M.; Santos E.; Sarazin F.; Sarmento R.; Sarmiento-Cano C.; Sato R.; Savina P.; Schäfer C.; Scherini V.; Schieler H.; Schimassek M.; Schimp M.; Schlüter F.; Schmidt D.; Scholten O.; Schovánek P.; Schröder F.G.; Schröder S.; Sciutto S.J.; Scornavacche M.; Shellard R.C.; Sigl G.; Silli G.; Sima O.; Šmída R.; Sommers P.; Soriano J.F.; Souchard J.; Squartini R.; Stadelmaier M.; Stanca D.; Stanič S.; Stasielak J.; Stassi P.; Streich A.; Suárez-Durán M.; Sudholz T.; Suomijärvi T.; Supanitsky A.D.; Šupík J.; Szadkowski Z.; Taboada A.; Taborda O.A.; Tapia A.; Timmermans C.; Tobiska P.; Todero Peixoto C.J.; Tomé B.; Torralba Elipe G.; Travaini A.; Travnicek P.; Trimarelli C.; Trini M.; Tueros M.; Ulrich R.; Unger M.; Urban M.; Vaclavek L.; Valdés Galicia J.F.; Valiño I.; Valore L.; van Vliet A.; Varela E.; Vargas Cárdenas B.; Vásquez-Ramírez A.; Veberič D.; Ventura C.; Vergara Quispe I.D.; Verzi V.; Vicha J.; Villaseñor L.; Vink J.; Vorobiov S.; Wahlberg H.; Watson A.A.; Weber M.; Weindl A.; Wiencke L.; Wilczyński H.; Winchen T.; Wirtz M.; Wittkowski D.; Wundheiler B.; Yushkov A.; Zapparrata O.; Zas E.; Zavrtanik D.; Zavrtanik M.; Zehrer L.; Zepeda A.; Ziolkowski M.; Zuccarello F.; The Pierre Auger Collaboration
      The hybrid design of the Pierre Auger Observatory allows for the measurement of the properties of extensive air showers initiated by ultra-high energy cosmic rays with unprecedented precision. By using an array of prototype ...

    • Diels-Alder Reactivity of a Chiral Anthracene Template with Symmetrical and Unsymmetrical Dienophiles: A DFT Study 

      Hernández-Mancera J.P.; Núñez-Zarur F.; Vivas-Reyes R.
      In this work, we used Density Functional Theory calculations to assess the factors that control the reactivity of a chiral anthracene template with three sets of dienophiles including maleic anhydrides, maleimides and ...

    • Digital connectivity as a fundamental right in Colombia [LA CONECTIVIDAD DIGITAL COMO DERECHO FUNDAMENTAL EN COLOMBIA] 

      Tamayo J.F.R.; Agudelo D.S.G.
      Purpose - The objective of this article is to establish whether digital connectivity meets the criteria required by Colombian constitutionalism to be considered as a fundamental right, specifically in relation to access ...

    • Diels-Alder reaction mechanisms of substituted chiral anthracene: A theoretical study based on the reaction force and reaction electronic flux 

      Hernández Mancera J.P.; Núñez-Zarur F.; Gutiérrez-Oliva S.; Toro-Labbé A.; Vivas-Reyes R.
      Quantum chemical calculations were used to study the mechanism of Diels-Alder reactions involving chiral anthracenes as dienes and a series of dienophiles. The reaction force analysis was employed to obtain a detailed ...

    • Developments in accounting and treasury functions in public educational institutions in the Municipality of Medellín, Colombia, since 1976 

      Quintero D.P.
      This article examines the official educational institutions in the Municipality of Medellín, focusing on their accounting and budget management and observing their normative development from 1976 to June 2018. The importance ...

    • Data fusion and information quality for biometric identification from multimodal signals [Modelo jdl y calidad de la información para identificación biométrica a partir de señales multimodales: Estudio exploratorio] 

      Becerra M.A.; Lasso-Arciniegas L.; Viveros A.; Serna-Guarín L.; Peluffo-Ordóñez D.; Tobón C.
      Biometric identification is carried out by processing physiological traits and signals. Biometrics systems are an open field of research and development, since they are permanently susceptible to attacks demanding permanent ...

    • Data for wetlandscapes and their changes around the world 

      Ghajarnia N.; Destouni G.; Thorslund J.; Kalantari Z.; Ahlén I.; Anaya-Acevedo J.A.; Blanco-Libreros J.F.; Borja S.; Chalov S.; Chalova A.; Chun K.P.; Clerici N.; Desormeaux A.; Garfield B.B.; Girard P.; Gorelits O.; Hansen A.; Jaramillo F.; Jarsjö J.; Labbaci A.; Livsey J.; Maneas G.; Pisarello K.M.; Palomino-Ángel S.; Pietroń J.; Price R.M.; Rivera-Monroy V.H.; Salgado J.; Britta K. Sannel A.; Seifollahi-Aghmiuni S.; Sjöberg Y.; Terskii P.; Vigouroux G.; Licero-Villanueva L.; Zamora D.
      <p>Geography and associated hydrological, hydroclimate and land-use conditions and their changes determine the states and dynamics of wetlands and their ecosystem services. The influences of these controls are not limited ...

    • Development of a financial software for the simulation of investment portfolios in the colombian capital market [Desarrollo de un software financiero para la simulación de portafolios de inversión en el mercado de capitales colombiano] 

      Arango M.; Rios J.; Montiel C.; Luna E.
      In the context of Revolution 4.0 influenced by the digitalization of most economic and social production processes, education cannot be kept out of the way; In this line, financial knowledge is an area that businessmen, ...

    • Critical Hydrogen Coverage Effect on the Hydrogenation of Ethylene Catalyzed by δ-MoC(001): An Ab Initio Thermodynamic and Kinetic Study 

      Jimenez-Orozco C.; Flórez E.; Viñes F.; Rodriguez J.A.; Illas F.
      The molecular mechanism of ethylene (C2H4) hydrogenation on a δ-MoC(001) surface has been studied by periodic density functional theory methods. Activation energy barriers and elementary reaction rates have been calculated ...

    • Dangling-to-Interstitial Oxygen Transition and Its Modifications of the Electronic Structure in Few-Layer Phosphorene 

      Gómez-Pérez J.F.; Correa J.D.; Pravda C.B.; Kónya Z.; Kukovecz Á.
      In this work, oxidation processes are correlated with the current-voltage characteristics of few-layer black phosphorus obtained by liquid-phase exfoliation. Black phosphorous (BP), a room-temperature p-type semiconductor, ...