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79 results on '"Quintero, Edwin A."'

1. Using a new spectral disentangling approach to ascertain whether the massive binary HDE 228766 contains a Wolf-Rayet star

Author

Quintero, Edwin A and Eenens, Philippe

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

The massive binary HDE 228766 is composed of an O type primary and an evolved secondary. However, previous qualitative analyses of the composite spectrum have led to a wide discussion about whether the secondary is an Of or a Wolf-Rayet star. We use new observations and our novel QER20 package to disentangle for the first time the spectra of the two stellar components and obtain artefact free reconstructed spectra, yielding the more accurate and reliable spectral classifications of O7.5 V((f))z for the primary and O6 Iaf for the secondary. The emission features of the P-Cygni profiles of the H\b{eta} and He I 5876 {\AA} lines, present in the reconstructed spectrum of the secondary, show that this star is at an initial phase of its transition to the WN evolutionary stage. A previously unobserved variable emission, composed of at least four independent features, is seen since 2014 superposed to the H{\gamma} absorption line. Our analysis reveals that these emission features originate from a physically extended region. This could be explained by an episode of enhanced mass-loss in the scenario of a non conservative evolution of the binary.

Published
2024
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2. New insight into the massive eccentric binary HD 165052: self-consistent orbital solution, apsidal motion, and fundamental parameters

Author

Rosu, Sophie, Quintero, Edwin A., Rauw, Gregor, and Eenens, Philippe

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

HD165052 is a short-period massive eccentric binary system that undergoes apsidal motion. As the rate of apsidal motion is directly related to the internal structure constants of the binary components, its study allows to get insight into the internal structure of the stars. We use medium- and high-resolution spectroscopic observations of HD165052 to provide constraints on the fundamental properties of the binary system and the evolutionary state of its components. We apply a spectral disentangling code to reconstruct artefact-free spectra of the individual stars and derive the radial velocities (RVs) at the times of the observations. We perform the first analysis of the disentangled spectra with the non-LTE model atmosphere code CMFGEN to determine the stellar properties. We derive the first self-consistent orbital solution of all existing RV data, including those reported in the literature, accounting for apsidal motion. We build, for the very first time, dedicated stellar evolution tracks with the Cl\'es code requesting the theoretical effective temperatures and luminosities to match those obtained from our spectroscopic analysis. The binary system HD165052, consisting of an O6.5V((f)) primary and an O7V((f)) secondary, displays apsidal motion at a rate of (11.30+0.64-0.49)$\deg$yr$^{-1}$. Evolutionary masses are compared to minimum dynamical masses to constrain the orbital inclination. Evolutionary masses Mev,P=24.8$\pm$1.0M$_\odot$ and Mev,S=20.9$\pm$1.0M$_\odot$ and radii Rev,P=7.0+0.5-0.4R$_\odot$ and Rev,S=6.2+0.4-0.3R$_\odot$ are derived, and the inclination is constrained to 22.1$\deg\le i\le 23.3\deg$. Theoretical apsidal motion rates, derived assuming an age of 2.0+/-0.5 Myr for the binary, are in agreement with the observational determination. The agreement with theoretical apsidal motion rates enforces the inferred values of the evolutionary stellar masses and radii., Comment: 17 pages. arXiv admin note: text overlap with arXiv:2205.11207

Published
2023
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3. The Massive Binary System 9 Sgr Revisited: New Insights into Disentangling Methods

Author

Quintero, Edwin A., Eenens, Philippe, and Rauw, Gregor

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

Disentangling techniques are often needed to obtain the spectra of the individual components of binary or multiple systems. A thorough analysis of the shift-and-add algorithm of Marchenko, Moffat, & Eenens (1998) reveals that in many cases the line fluxes are poorly reproduced and spurious wings appear. The causes of these discrepancies are discussed and a new disentangling package, QER20, is presented which significantly reduces these errors and vastly increases the performance. When applied to the massive binary 9 Sgr, our new code yields line fluxes which are notably different from those previously published and lead us to revise the spectral classification to slightly earlier subtypes: O3V((f +)) for the primary and O5V((f)) for the secondary. We show that with the MME98 algorithm the classification of massive stars in binaries can be off by several subtypes whilst there are no such errors when the QER20 package is used., Comment: Accepted for publication in Astronomical Notes, 12 pages, 10 figures

Published
2020
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4. Size and Shape Constraints of (486958) Arrokoth from Stellar Occultations

Author

Buie, Marc W., Porter, Simon B., Tamblyn, Peter, Terrell, Dirk, Parker, Alex Harrison, Baratoux, David, Kaire, Maram, Leiva, Rodrigo, Verbiscer, Anne J., Zangari, Amanda M., Colas, François, Diop, Baïdy Demba, Samaniego, Joseph I., Wasserman, Lawrence H., Benecchi, Susan D., Caspi, Amir, Gwyn, Stephen, Kavelaars, J. J., Uría, Adriana C. Ocampo, Rabassa, Jorge, Skrutskie, M. F., Soto, Alejandro, Tanga, Paolo, Young, Eliot F., Stern, S. Alan, Andersen, Bridget C., Pérez, Mauricio E. Arango, Arredondo, Anicia, Artola, Rodolfo Alfredo, Bâ, Abdoulaye, Ballet, Romuald, Blank, Ted, Bop, Cheikh Tidiane, Bosh, Amanda S., López, Matías Aarón Camino, Carter, Christian M., Castro-Chacón, J. H., Desprez, Alfonso Caycedo, Guerra, Nicolás Caycedo, Conard, Steven J., Dauvergne, Jean-Luc, Dean, Bryan, Dean, Michelle, Desmars, Josselin, Dieng, Abdou Lahat, Dieng, Mame Diarra Bousso, Diouf, Omar, Dorego, Gualbert Séraphin, Dunham, David W., Dunham, Joan, Luca, Hugo A. Durantini, Edwards, Patrick, Erasmus, Nicolas, Faye, Gayane, Faye, Mactar, Ferrario, Lucas Ezequiel, Ferrell, Chelsea L., Finley, Tiffany J., Fraser, Wesley C., Friedli, Alison J., Serna, Julián Galvez, Garcia-Migani, Esteban A., Genade, Anja, Getrost, Kai, Gil-Hutton, Ricardo A., Gimeno, German N., Golub, Eli Joseph, Murillo, Giovanni Francisco González, Grusin, Michael D., Gurovich, Sebastian, Hanna, William H., Henn, Santiago M., Hinton, P. C., Hughes, Paul J., Josephs Jr, John David, Joya, Raul, Kammer, Joshua A., Keeney, Brian A., Keller, John M., Kramer, Emily A., Levine, Stephen E., Lisse, Carey M., Lovell, Amy J., Mackie, Jason A., Makarchuk, Stanislav, Manzano, Luis E., Mbaye, Salma Sylla, Mbaye, Modou, Melia, Raul Roberto, Moreno, Freddy, Moss, Sean K., Ndaiye, Diene, Ndiaye, Mapathe, Nelson, Matthew J., Olkin, Catherine B., Olsen, Aart M., Moreno, Victor Jonathan Ospina, Pasachoff, Jay M., Pereyra, Mariana Belen, Person, Michael J., Pinzón, Giovanni, Pulver, Eduardo Alejandro, Quintero, Edwin A., Regester, Jeffrey R., Resnick, Aaron Caleb, Reyes-Ruiz, Mauricio, Rolfsmeier, Alex D., Ruhland, Trina R., Salmon, Julien, Santos-Sanz, Pablo, Santucho, Marcos Ariel, Niño, Diana Karina Sepúlveda, Sickafoose, Amanda A., Silva, José S., Singer, Kelsi N., Skipper, Joy N., Slivan, Stephen M., Smith, Rose J. C., Spagnotto, Julio C., Stephens, Andrew W., Strabala, Samuel D., Tamayo, Francisco J., Throop, Henry B., Cañas, Andrés David Torres, Toure, Labaly, Traore, Alassane, Tsang, Constantine C. C., Turner, Jake D., Vanegas, Santiago, Venable, Roger, Wilson, John C., Zuluaga, Carlos A., and Zuluaga, Jorge I.

Subjects
Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We present the results from four stellar occultations by (486958) Arrokoth, the flyby target of the New Horizons extended mission. Three of the four efforts led to positive detections of the body, and all constrained the presence of rings and other debris, finding none. Twenty-five mobile stations were deployed for 2017 June 3 and augmented by fixed telescopes. There were no positive detections from this effort. The event on 2017 July 10 was observed by SOFIA with one very short chord. Twenty-four deployed stations on 2017 July 17 resulted in five chords that clearly showed a complicated shape consistent with a contact binary with rough dimensions of 20 by 30 km for the overall outline. A visible albedo of 10% was derived from these data. Twenty-two systems were deployed for the fourth event on 2018 Aug 4 and resulted in two chords. The combination of the occultation data and the flyby results provides a significant refinement of the rotation period, now estimated to be 15.9380 $\pm$ 0.0005 hours. The occultation data also provided high-precision astrometric constraints on the position of the object that were crucial for supporting the navigation for the New Horizons flyby. This work demonstrates an effective method for obtaining detailed size and shape information and probing for rings and dust on distant Kuiper Belt objects as well as being an important source of positional data that can aid in spacecraft navigation that is particularly useful for small and distant bodies., Comment: Submitted to Astronomical Journal (revised); 40 pages, 13 figures, 9 tables

Published
2019
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5. Immunoglobulin, glucocorticoid, or combination therapy for multisystem inflammatory syndrome in children: a propensity-weighted cohort study

Author

Chouli, Mohamed, Hamadouche, Nacera, Ladj, Mohamed Samir, Agrimbau Vázquez, Jorge, Carmona, Rodrigo, Collia, Adrian Gustavo, Ellis, Alejandro, Natta, Diego, Pérez, Laura, Rubiños, Mayra, Veliz, Natalia, Yori, Silvana, Britton, Philip N., Burgner, David P., Carey, Emma, Crawford, Nigel W., Giuliano, Hayley, McMinn, Alissa, Wong, Shirley, Wood, Nicholas, Holter, Wolfgang, Krainz, Matthias, Ulreich, Raphael, Zurl, Christoph, Dehoorne, Joke, Haerynck, Filomeen, Hoste, Levi, Schelstraete, Petra, Vandekerckhove, Kristof, Willems, Jef, Almeida Farias, Camila Giuliana, Almeida, Flávia Jacqueline, Alves Leal, Izabel, Araujo da Silva, André Ricardo, Araujo e Silva, Anna Esther, Barreiro, Sabrina T.A., Bomfim Prado da Silva, Daniella Gregória, Cervi, Maria Celia, dos Santos Naja Cardoso, Mirian Viviane, Henriques Teixeira, Cristiane, Jarovsky, Daniel, Martins Araujo, Julienne, Naaman Berezin, Eitan, Palazzi Sáfadi, Marco Aurélio, Paternina-de la Ossa, Rolando Andres, Souza Vieira, Cristina, Dimitrova, Anna, Ganeva, Margarita, Stefanov, Stefan, Telcharova-Mihaylovska, Albena, Biggs, Catherine M., Lopez, Alison, Scuccimarri, Rosie, Tan, Ryan, Wasserman, Sam, Withington, Davinia, Ampuero, Camila, Aravena, Javiera, Bustos B, Raul, Casanova, Daniel, Cruces, Pablo, Diaz, Franco, García-Salum, Tamara, Godoy, Loreto, Medina, Rafael A., Valenzuela Galaz, Gonzalo, Camacho-Moreno, Germán, Avila-Aguero, María L., Brenes-Chacón, Helena, Camacho-Badilla, Kattia, Ivankovich-Escoto, Gabriela, Naranjo-Zuniga, Gabriela, Soriano-Fallas, Alejandra, Ulloa-Gutierrez, Rolando, Yock-Corrales, Adriana, Amer, Maysa Abbas, Abdelmeguid, Yasmine, Ahmed, Yomna H.H.Z., Badib, Adham, Badreldin, Karim, Elkhashab, Yara, Heshmat, Hassan, Hussein, Amna, Mohamed Hussein, Amna Hussein, Ibrahim, Sandra, Shoman, Walaa, Yakout, Radwa M, Heinonen, Santtu, Angoulvant, François, Belot, Alexandre, Ouldali, Naïm, Beske, Florian, Heep, Axel, Masjosthusmann, Katja, Reiter, Karl, van den Heuvel, Ingeborg, von Both, Ulrich, Agrafiotou, Aikaterini, Antachopoulos, Charalampos, Charisi, Konstantina, Eleftheriou, Irini, Farmaki, Evangelia, Fotis, Lampros, Kafetzis, Dimitrios, Koletsi, Patra, Kourtesi, Katerina, Lampidi, Stavroula, Liakopoulou, Theodota, Maritsi, Despoina, Michailidou, Elisa, Milioudi, Maria, Mparmpounaki, Ioanna, Papadimitriou, Eleni, Papaevangelou, Vassiliki, Roilides, Emmanuel, Tsiatsiou, Olga, Tsolas, Georgios, Tsolia, Maria, Vantsi, Petrina, Banegas Pineda, Linda Yajeira, Borjas Aguilar, Karla Leversia, Cantillano Quintero, Edwin Mauricio, Ip, Patrick, Kwan, Mike Yat Wah, Kwok, Janette, Lau, Yu Lung, To, Kelvin, Wong, Joshua Sung Chih, David, Mate, Farkas, David, Kalcakosz, Szofia, Szekeres, Klaudia, Zsigmond, Borbala, Aslam, Nadeem, Luder, Anthony, Andreozzi, Laura, Bianco, Francesco, Bucciarelli, Valentina, Buonsenso, Danilo, Cimaz, Rolando, De Luca, Maia, Dellepiane, Rosa Maria, Fabi, Marianna, Filice, Emanuele, Lanari, Marcello, Lo Vecchio, Andrea, Mastrolia, Maria Vincenza, Mauro, Angela, Mazza, Angelo, Papa, Mario Virgilio, Romani, Lorenza, Scarano, Sara Maria, Simonini, Gabriele, Tipo, Vincenzo, Verdoni, Lucio, Macharia, Anne-Marie, Musiime, Grace, Reel, Bhupi, Wangai, Frederick, Pace, David, Torpiano, Paul, Anaya-Enriquez, Nancy, Carreon-Guerrero, Juan Manuel, Chacon-Cruz, Enrique, Cheung López, Mariana, Faugier Fuentes, Enrique, Fonseca Flores, Marisol, García-Domínguez, Miguel, Giron Vargas, Ana Luisa, Lopez-Delgado, Ivan, Lopez Hernández, Liliana, Menchaca Aguayo, Hector F., Montaño-Duron, Jesus Gilberto, Pérez-Gaxiola, Giordano, Ramos Tiñini, Pamela, Tostado-Morales, Edgardo, Valadez, Julio, Inchley, Christopher, Klevberg, Sjur, Knudsen, Per Kristian, Måseide, Per Helge, Carrera, Jose Manuel, Castaño, Elizabeth, Daza Timana, Carlos Alberto, De Leon, Tirza, Estripeaut, Dora, Levy, Jacqueline, Norero, Ximena, Record, Javier, Rojas-Bonilla, Magda, Wong, Mayra, Iramain, Ricardo, Hernandez, Roger, Huamán, Gian, Munaico, Manuel, Peralta, Carlos, Seminario, Diego, Zapata Yarlequé, Elmer Hans, Gadzinska, Justyna, Ludwikowska, Kamila, Mandziuk, Joanna, Okarska-Napierała, Magdalena, Alacheva, Zalina A., Alexeeva, Ekaterina, Ananin, Petr V., Antsupova, Margarita, Bakradze, Maya D., Berbenyuk, Anna, Bobkova, Polina, Borzakova, Svetlana, Chashchina, Irina L., El-Taravi, Yasmin, Fisenko, Andrey P., Gautier, Marina S., Glazyrina, Anastasia, Gorlenko, Cyrill, Grosheva, Mariia, Kiselev, Herman, Kondrikova, Elena, Korobyants, Evgeniya, Korsunskiy, Anatoliy A., Kovygina, Karina, Krasnaya, Ekaterina, Kurbanova, Seda, Kurdup, Maria K., Mamutova, Anna V., Mazankova, Lyudmila, Mitushin, Ilya L., Munblit, Daniel, Nargizyan, Anzhelika, Orlova, Yanina O., Osmanov, Ismail M., Polyakova, Anastasia S., Pushkareva, Anna, Romanova, Olga, Samitova, Elmira, Shvedova, Anastasia, Sologub, Anna, Iakovleva, Ekaterina, Tepaev, Rustem F., Tkacheva, Anna A., Yegiyan, Margarita, Yusupova, Valeriya, Zholobova, Elena, Grasa, Carlos Daniel, Epalza, Cristina, Lopez Segura, Nuria, Martinon-Torres, Federico, Melendo, Susana, Mendez-Echevarria, Ana, Mesa Guzmán, Juan Miguel, Palacios Argueta, Jorge Roberto, Rivero-Calle, Irene, Rivière, Jacques, Rodríguez-González, Moisés, Rojo, Pablo, Sanchez Manubens, Judith, Soler-Palacin, Pere, Soriano-Arandes, Antoni, Tagarro, Alfredo, Villaverde, Serena, Altman, Maria, Brodin, Petter, Horne, AnnaCarin, Palmblad, Karin, Brotschi, Barbara, Meyer Sauteur, Patrick, Pachlopnik Schmid, Jana, Prader, Seraina, Relly, Christa, Schlapbach, Luregn J., Seiler, Michelle, Strasser, Sophie, Trück, Johannes, Weber, Kathrin, Wütz, Daniela, Hamdan, Alaa, Melhem, Ibrahim, Moussa, Ahmed, Dunk, Joke, Ketharanathan, Naomi, Vermont, Clementien, Akyüz Özkan, Esra, Cetin, Benhur Sirvan, Erdeniz, Emine Hafize, Şahin, Irfan Oğuz, Borisova, Galina, Boyarchuk, Oksana, Boychenko, Lidiya, Boyko, Yaryna, Diudenko, Nadiia, Dyvonyak, Olha, Kasiyan, Olexandr, Katerynych, Kostiantyn, Kostyuchenko, Larysa, Mamenko, Marina, Melnyk, Kateryna, Miagka, Nelia, Nazarenko, Liliya, Nezgoda, Iryna, Rykova, Stanislava, Svyst, Olga, Teslenko, Maria, Trykosh, Mykola, Vasilenko, Nataliya, Volokha, Alla, Adams, Charlotte, Akomolafe, Toju, Al-Abadi, Eslam, Alders, Nele, Alifieraki, Styliani, Ansumanu, Hareef, Aston, Emily, Avram, Paula, Bamford, Alasdair, Banks, Millie, Basu Roy, Robin, Beattie, Thomas, Boleti, Olga, Bracken, Abbey, Broad, Jonathan, Cai, James, Carrol, Enitan D., Carter, Michael, Chandran, Anchit, Charlesworth, James, Chawla, Jaya, Cooper, Hannah, Cooray, Samantha, Davies, Patrick, Davis, Francesca, Drysdale, Simon B., Dzora, Ella, Emonts, Marieke, Evans, Ceri, Fidler, Katy, Foster, Caroline, Gong, Chen, Gongrun, Berin, Gonzalez, Carmen, Gorgun, Berin, Grandjean, Louis, Grant, Karlie, Guo, Jonathan, Hacohen, Yael, Hall, Jack, Hamid, Hytham K.S., Hassell, Jane, Hesketh, Christine, Hewlett, Jessica, Hnieno, Ahmad, Holt-Davis, Hannah, Hossain, Aleena, Hu, Shiying, Hudson, Lee D., Jheeta, Sharon, Johnson, Mae, Johnson, Sarah, Jyothish, Deepthi, Kampmann, Beate, Kavirayani, Akhila, Kelly, Deborah, Kirubakaran, Arangan, Kucera, Filip, Langer, Daniel, Lawson, George, Lees, Emily A, Lenihan, Rebecca, Lillie, Jon, Longbottom, Katherine, Lyall, Hermione, Mackdermott, Niamh, Maltby, Sarah, Mclelland, Thomas, McMahon, Anne-Marie, Miller, Danielle, Miranda, Mariana, Mirza, Luwaiza, Morrison, Zoe, Moshal, Karyn, Muller, Jennifer, Musuka, Phoebe, Myttaraki, Evangelia, Nadel, Simon, Nair, Sreedevi, Nuttall, Luke, Oremakinde, Oyinkansola, Osaghae, Daniella, Osman, Fatima, Ostrzewska, Anna, Paccagnella, Davide, Panthula, Mrinalini, Papachatzi, Eleni, Papadopoulou, Charalampia, Patel, Fahim, Patel, Harsita, Payne, Helen, Penner, Justin, Polandi, Shervin, Prendergast, Andrew J., Ramnarayan, Padmanabhan, Ranasinghe, Lasith, Ravichandran, Muthukumaran, Rhys-Evans, Sophie, Riordan, Andrew, Rodrigues, Charlene M.C., Roe, Lauren, Romaine, Sam, Schobi, Nina, Seddon, James, Shingadia, Delane, Sikdar, Oishi, Srivastava, Anand, Struik, Siske, Sun, Thomas, Tan, Rachel Wei, Taylor, Alice, Taylor, Amanda, Taylor, Andrew, Tran, Steven, Tsagkaris, Stavros, Tudor-Williams, Gareth, van den Berg, Sarah, van der Velden, Fabian, Ventilacion, Lyn, Wellman, Paul A., Withers Green, Joseph, Yanney, Michael P., Yeung, Shunmay, Badheka, Aditya, Badran, Sarah, Bailey, Dwight M., Burch, Anna Kathryn, Burns, Jane C., Cichon, Catherine, Cirks, Blake, Dallman, Michael D., Delany, Dennis R., Fairchok, Mary, Friedman, Samantha, Geracht, Jennifer, Langs-Barlow, Allison, Mann, Kelly, Padhye, Amruta, Quade, Alexis, Ramirez, Kacy Alyne, Rockett, John, Sayed, Imran Ali, Santos, Roberto P., Shahin, Amr A., Tremoulet, Adriana, Umaru, Samuel, Widener, Rebecca, Mujuru, Hilda Angela, Kandawasvika, Gwendoline, Channon-Wells, Samuel, Vito, Ortensia, McArdle, Andrew J, Seaby, Eleanor G, Shah, Priyen, Pazukhina, Ekaterina, Wilson, Clare, Broderick, Claire, D'Souza, Giselle, Keren, Ilana, Nijman, Ruud G, Carter, Michael J, De, Tisham, Hoggart, Clive, Whittaker, Elizabeth, Herberg, Jethro A, Kaforou, Myrsini, Cunnington, Aubrey J, Blyuss, Oleg, and Levin, Michael

Published
2023
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6. State of Health of Liquid Electrolyte Batteries and Its Relationship with the Change in Transmittance at a Frequency of 254 nm.

Author

Alfredo Palacio, Jose, García Quintero, Edwin, and Orozco, William

Subjects
LEAD-acid batteries, ENERGY storage, ELECTROLYTES, STORAGE batteries
Abstract

The determination of the state of health of batteries is a necessary parameter for planning the acquisition of new units in storage systems for energy support. Currently, there are many investigations focused on determining the of the state of health of batteries of different types of batteries, as well as their useful life. However, none have analysed the of the state of health of batteries by changes in the transmittance of the electrolyte for a specific frequency, as proposed in this article. The project from which this article derives considered different health states of lead-acid batteries. The percentage of optical transmittance of the four central cells of the battery was analyzed, generating a classification pattern that allowed the approximate value of battery health to be obtained from the transmittance. The variation of the battery electrode is verified according to the changes in the state of health measured in the electrolyte. This method can be applied to batteries online. The proposed method for determining battery health is a non-destructive and cost-effective way to assess the remaining capacity of batteries. It could be used to extend the lifetime of batteries in storage systems and to help to ensure that systems have the capacity to meet energy demands. [ABSTRACT FROM AUTHOR]

Published
2023
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8. Immunoglobulin, glucocorticoid, or combination therapy for multisystem inflammatory syndrome in children: a propensity-weighted cohort study

Author

Channon-Wells, Samuel, primary, Vito, Ortensia, additional, McArdle, Andrew J, additional, Seaby, Eleanor G, additional, Patel, Harsita, additional, Shah, Priyen, additional, Pazukhina, Ekaterina, additional, Wilson, Clare, additional, Broderick, Claire, additional, D'Souza, Giselle, additional, Keren, Ilana, additional, Nijman, Ruud G, additional, Tremoulet, Adriana, additional, Munblit, Daniel, additional, Ulloa-Gutierrez, Rolando, additional, Carter, Michael J, additional, Ramnarayan, Padmanabhan, additional, De, Tisham, additional, Hoggart, Clive, additional, Whittaker, Elizabeth, additional, Herberg, Jethro A, additional, Kaforou, Myrsini, additional, Cunnington, Aubrey J, additional, Blyuss, Oleg, additional, Levin, Michael, additional, Chouli, Mohamed, additional, Hamadouche, Nacera, additional, Ladj, Mohamed Samir, additional, Agrimbau Vázquez, Jorge, additional, Carmona, Rodrigo, additional, Collia, Adrian Gustavo, additional, Ellis, Alejandro, additional, Natta, Diego, additional, Pérez, Laura, additional, Rubiños, Mayra, additional, Veliz, Natalia, additional, Yori, Silvana, additional, Britton, Philip N., additional, Burgner, David P., additional, Carey, Emma, additional, Crawford, Nigel W., additional, Giuliano, Hayley, additional, McMinn, Alissa, additional, Wong, Shirley, additional, Wood, Nicholas, additional, Holter, Wolfgang, additional, Krainz, Matthias, additional, Ulreich, Raphael, additional, Zurl, Christoph, additional, Dehoorne, Joke, additional, Haerynck, Filomeen, additional, Hoste, Levi, additional, Schelstraete, Petra, additional, Vandekerckhove, Kristof, additional, Willems, Jef, additional, Almeida Farias, Camila Giuliana, additional, Almeida, Flávia Jacqueline, additional, Alves Leal, Izabel, additional, Araujo da Silva, André Ricardo, additional, Araujo e Silva, Anna Esther, additional, Barreiro, Sabrina T.A., additional, Bomfim Prado da Silva, Daniella Gregória, additional, Cervi, Maria Celia, additional, dos Santos Naja Cardoso, Mirian Viviane, additional, Henriques Teixeira, Cristiane, additional, Jarovsky, Daniel, additional, Martins Araujo, Julienne, additional, Naaman Berezin, Eitan, additional, Palazzi Sáfadi, Marco Aurélio, additional, Paternina-de la Ossa, Rolando Andres, additional, Souza Vieira, Cristina, additional, Dimitrova, Anna, additional, Ganeva, Margarita, additional, Stefanov, Stefan, additional, Telcharova-Mihaylovska, Albena, additional, Biggs, Catherine M., additional, Lopez, Alison, additional, Scuccimarri, Rosie, additional, Tan, Ryan, additional, Wasserman, Sam, additional, Withington, Davinia, additional, Ampuero, Camila, additional, Aravena, Javiera, additional, Bustos B, Raul, additional, Casanova, Daniel, additional, Cruces, Pablo, additional, Diaz, Franco, additional, García-Salum, Tamara, additional, Godoy, Loreto, additional, Medina, Rafael A., additional, Valenzuela Galaz, Gonzalo, additional, Camacho-Moreno, Germán, additional, Avila-Aguero, María L., additional, Brenes-Chacón, Helena, additional, Camacho-Badilla, Kattia, additional, Ivankovich-Escoto, Gabriela, additional, Naranjo-Zuniga, Gabriela, additional, Soriano-Fallas, Alejandra, additional, Yock-Corrales, Adriana, additional, Amer, Maysa Abbas, additional, Abdelmeguid, Yasmine, additional, Ahmed, Yomna H.H.Z., additional, Badib, Adham, additional, Badreldin, Karim, additional, Elkhashab, Yara, additional, Heshmat, Hassan, additional, Hussein, Amna, additional, Mohamed Hussein, Amna Hussein, additional, Ibrahim, Sandra, additional, Shoman, Walaa, additional, Yakout, Radwa M, additional, Heinonen, Santtu, additional, Angoulvant, François, additional, Belot, Alexandre, additional, Ouldali, Naïm, additional, Beske, Florian, additional, Heep, Axel, additional, Masjosthusmann, Katja, additional, Reiter, Karl, additional, van den Heuvel, Ingeborg, additional, von Both, Ulrich, additional, Agrafiotou, Aikaterini, additional, Antachopoulos, Charalampos, additional, Charisi, Konstantina, additional, Eleftheriou, Irini, additional, Farmaki, Evangelia, additional, Fotis, Lampros, additional, Kafetzis, Dimitrios, additional, Koletsi, Patra, additional, Kourtesi, Katerina, additional, Lampidi, Stavroula, additional, Liakopoulou, Theodota, additional, Maritsi, Despoina, additional, Michailidou, Elisa, additional, Milioudi, Maria, additional, Mparmpounaki, Ioanna, additional, Papadimitriou, Eleni, additional, Papaevangelou, Vassiliki, additional, Roilides, Emmanuel, additional, Tsiatsiou, Olga, additional, Tsolas, Georgios, additional, Tsolia, Maria, additional, Vantsi, Petrina, additional, Banegas Pineda, Linda Yajeira, additional, Borjas Aguilar, Karla Leversia, additional, Cantillano Quintero, Edwin Mauricio, additional, Ip, Patrick, additional, Kwan, Mike Yat Wah, additional, Kwok, Janette, additional, Lau, Yu Lung, additional, To, Kelvin, additional, Wong, Joshua Sung Chih, additional, David, Mate, additional, Farkas, David, additional, Kalcakosz, Szofia, additional, Szekeres, Klaudia, additional, Zsigmond, Borbala, additional, Aslam, Nadeem, additional, Luder, Anthony, additional, Andreozzi, Laura, additional, Bianco, Francesco, additional, Bucciarelli, Valentina, additional, Buonsenso, Danilo, additional, Cimaz, Rolando, additional, De Luca, Maia, additional, Dellepiane, Rosa Maria, additional, Fabi, Marianna, additional, Filice, Emanuele, additional, Lanari, Marcello, additional, Lo Vecchio, Andrea, additional, Mastrolia, Maria Vincenza, additional, Mauro, Angela, additional, Mazza, Angelo, additional, Papa, Mario Virgilio, additional, Romani, Lorenza, additional, Scarano, Sara Maria, additional, Simonini, Gabriele, additional, Tipo, Vincenzo, additional, Verdoni, Lucio, additional, Macharia, Anne-Marie, additional, Musiime, Grace, additional, Reel, Bhupi, additional, Wangai, Frederick, additional, Pace, David, additional, Torpiano, Paul, additional, Anaya-Enriquez, Nancy, additional, Carreon-Guerrero, Juan Manuel, additional, Chacon-Cruz, Enrique, additional, Cheung López, Mariana, additional, Faugier Fuentes, Enrique, additional, Fonseca Flores, Marisol, additional, García-Domínguez, Miguel, additional, Giron Vargas, Ana Luisa, additional, Lopez-Delgado, Ivan, additional, Lopez Hernández, Liliana, additional, Menchaca Aguayo, Hector F., additional, Montaño-Duron, Jesus Gilberto, additional, Pérez-Gaxiola, Giordano, additional, Ramos Tiñini, Pamela, additional, Tostado-Morales, Edgardo, additional, Valadez, Julio, additional, Inchley, Christopher, additional, Klevberg, Sjur, additional, Knudsen, Per Kristian, additional, Måseide, Per Helge, additional, Carrera, Jose Manuel, additional, Castaño, Elizabeth, additional, Daza Timana, Carlos Alberto, additional, De Leon, Tirza, additional, Estripeaut, Dora, additional, Levy, Jacqueline, additional, Norero, Ximena, additional, Record, Javier, additional, Rojas-Bonilla, Magda, additional, Wong, Mayra, additional, Iramain, Ricardo, additional, Hernandez, Roger, additional, Huamán, Gian, additional, Munaico, Manuel, additional, Peralta, Carlos, additional, Seminario, Diego, additional, Zapata Yarlequé, Elmer Hans, additional, Gadzinska, Justyna, additional, Ludwikowska, Kamila, additional, Mandziuk, Joanna, additional, Okarska-Napierała, Magdalena, additional, Alacheva, Zalina A., additional, Alexeeva, Ekaterina, additional, Ananin, Petr V., additional, Antsupova, Margarita, additional, Bakradze, Maya D., additional, Berbenyuk, Anna, additional, Bobkova, Polina, additional, Borzakova, Svetlana, additional, Chashchina, Irina L., additional, El-Taravi, Yasmin, additional, Fisenko, Andrey P., additional, Gautier, Marina S., additional, Glazyrina, Anastasia, additional, Gorlenko, Cyrill, additional, Grosheva, Mariia, additional, Kiselev, Herman, additional, Kondrikova, Elena, additional, Korobyants, Evgeniya, additional, Korsunskiy, Anatoliy A., additional, Kovygina, Karina, additional, Krasnaya, Ekaterina, additional, Kurbanova, Seda, additional, Kurdup, Maria K., additional, Mamutova, Anna V., additional, Mazankova, Lyudmila, additional, Mitushin, Ilya L., additional, Nargizyan, Anzhelika, additional, Orlova, Yanina O., additional, Osmanov, Ismail M., additional, Polyakova, Anastasia S., additional, Pushkareva, Anna, additional, Romanova, Olga, additional, Samitova, Elmira, additional, Shvedova, Anastasia, additional, Sologub, Anna, additional, Iakovleva, Ekaterina, additional, Tepaev, Rustem F., additional, Tkacheva, Anna A., additional, Yegiyan, Margarita, additional, Yusupova, Valeriya, additional, Zholobova, Elena, additional, Grasa, Carlos Daniel, additional, Epalza, Cristina, additional, Lopez Segura, Nuria, additional, Martinon-Torres, Federico, additional, Melendo, Susana, additional, Mendez-Echevarria, Ana, additional, Mesa Guzmán, Juan Miguel, additional, Palacios Argueta, Jorge Roberto, additional, Rivero-Calle, Irene, additional, Rivière, Jacques, additional, Rodríguez-González, Moisés, additional, Rojo, Pablo, additional, Sanchez Manubens, Judith, additional, Soler-Palacin, Pere, additional, Soriano-Arandes, Antoni, additional, Tagarro, Alfredo, additional, Villaverde, Serena, additional, Altman, Maria, additional, Brodin, Petter, additional, Horne, AnnaCarin, additional, Palmblad, Karin, additional, Brotschi, Barbara, additional, Meyer Sauteur, Patrick, additional, Pachlopnik Schmid, Jana, additional, Prader, Seraina, additional, Relly, Christa, additional, Schlapbach, Luregn J., additional, Seiler, Michelle, additional, Strasser, Sophie, additional, Trück, Johannes, additional, Weber, Kathrin, additional, Wütz, Daniela, additional, Hamdan, Alaa, additional, Melhem, Ibrahim, additional, Moussa, Ahmed, additional, Dunk, Joke, additional, Ketharanathan, Naomi, additional, Vermont, Clementien, additional, Akyüz Özkan, Esra, additional, Cetin, Benhur Sirvan, additional, Erdeniz, Emine Hafize, additional, Şahin, Irfan Oğuz, additional, Borisova, Galina, additional, Boyarchuk, Oksana, additional, Boychenko, Lidiya, additional, Boyko, Yaryna, additional, Diudenko, Nadiia, additional, Dyvonyak, Olha, additional, Kasiyan, Olexandr, additional, Katerynych, Kostiantyn, additional, Kostyuchenko, Larysa, additional, Mamenko, Marina, additional, Melnyk, Kateryna, additional, Miagka, Nelia, additional, Nazarenko, Liliya, additional, Nezgoda, Iryna, additional, Rykova, Stanislava, additional, Svyst, Olga, additional, Teslenko, Maria, additional, Trykosh, Mykola, additional, Vasilenko, Nataliya, additional, Volokha, Alla, additional, Adams, Charlotte, additional, Akomolafe, Toju, additional, Al-Abadi, Eslam, additional, Alders, Nele, additional, Alifieraki, Styliani, additional, Ansumanu, Hareef, additional, Aston, Emily, additional, Avram, Paula, additional, Bamford, Alasdair, additional, Banks, Millie, additional, Basu Roy, Robin, additional, Beattie, Thomas, additional, Boleti, Olga, additional, Bracken, Abbey, additional, Broad, Jonathan, additional, Cai, James, additional, Carrol, Enitan D., additional, Carter, Michael, additional, Chandran, Anchit, additional, Charlesworth, James, additional, Chawla, Jaya, additional, Cooper, Hannah, additional, Cooray, Samantha, additional, Davies, Patrick, additional, Davis, Francesca, additional, Drysdale, Simon B., additional, Dzora, Ella, additional, Emonts, Marieke, additional, Evans, Ceri, additional, Fidler, Katy, additional, Foster, Caroline, additional, Gong, Chen, additional, Gongrun, Berin, additional, Gonzalez, Carmen, additional, Gorgun, Berin, additional, Grandjean, Louis, additional, Grant, Karlie, additional, Guo, Jonathan, additional, Hacohen, Yael, additional, Hall, Jack, additional, Hamid, Hytham K.S., additional, Hassell, Jane, additional, Hesketh, Christine, additional, Hewlett, Jessica, additional, Hnieno, Ahmad, additional, Holt-Davis, Hannah, additional, Hossain, Aleena, additional, Hu, Shiying, additional, Hudson, Lee D., additional, Jheeta, Sharon, additional, Johnson, Mae, additional, Johnson, Sarah, additional, Jyothish, Deepthi, additional, Kampmann, Beate, additional, Kavirayani, Akhila, additional, Kelly, Deborah, additional, Kirubakaran, Arangan, additional, Kucera, Filip, additional, Langer, Daniel, additional, Lawson, George, additional, Lees, Emily A, additional, Lenihan, Rebecca, additional, Lillie, Jon, additional, Longbottom, Katherine, additional, Lyall, Hermione, additional, Mackdermott, Niamh, additional, Maltby, Sarah, additional, Mclelland, Thomas, additional, McMahon, Anne-Marie, additional, Miller, Danielle, additional, Miranda, Mariana, additional, Mirza, Luwaiza, additional, Morrison, Zoe, additional, Moshal, Karyn, additional, Muller, Jennifer, additional, Musuka, Phoebe, additional, Myttaraki, Evangelia, additional, Nadel, Simon, additional, Nair, Sreedevi, additional, Nuttall, Luke, additional, Oremakinde, Oyinkansola, additional, Osaghae, Daniella, additional, Osman, Fatima, additional, Ostrzewska, Anna, additional, Paccagnella, Davide, additional, Panthula, Mrinalini, additional, Papachatzi, Eleni, additional, Papadopoulou, Charalampia, additional, Patel, Fahim, additional, Payne, Helen, additional, Penner, Justin, additional, Polandi, Shervin, additional, Prendergast, Andrew J., additional, Ranasinghe, Lasith, additional, Ravichandran, Muthukumaran, additional, Rhys-Evans, Sophie, additional, Riordan, Andrew, additional, Rodrigues, Charlene M.C., additional, Roe, Lauren, additional, Romaine, Sam, additional, Schobi, Nina, additional, Seddon, James, additional, Shingadia, Delane, additional, Sikdar, Oishi, additional, Srivastava, Anand, additional, Struik, Siske, additional, Sun, Thomas, additional, Tan, Rachel Wei, additional, Taylor, Alice, additional, Taylor, Amanda, additional, Taylor, Andrew, additional, Tran, Steven, additional, Tsagkaris, Stavros, additional, Tudor-Williams, Gareth, additional, van den Berg, Sarah, additional, van der Velden, Fabian, additional, Ventilacion, Lyn, additional, Wellman, Paul A., additional, Withers Green, Joseph, additional, Yanney, Michael P., additional, Yeung, Shunmay, additional, Badheka, Aditya, additional, Badran, Sarah, additional, Bailey, Dwight M., additional, Burch, Anna Kathryn, additional, Burns, Jane C., additional, Cichon, Catherine, additional, Cirks, Blake, additional, Dallman, Michael D., additional, Delany, Dennis R., additional, Fairchok, Mary, additional, Friedman, Samantha, additional, Geracht, Jennifer, additional, Langs-Barlow, Allison, additional, Mann, Kelly, additional, Padhye, Amruta, additional, Quade, Alexis, additional, Ramirez, Kacy Alyne, additional, Rockett, John, additional, Sayed, Imran Ali, additional, Santos, Roberto P., additional, Shahin, Amr A., additional, Umaru, Samuel, additional, Widener, Rebecca, additional, Mujuru, Hilda Angela, additional, and Kandawasvika, Gwendoline, additional

Published
2023
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11. Association of Cancer Diagnosis and Therapeutic Stage With Mortality in Pediatric Patients With COVID-19, Prospective Multicenter Cohort Study From Latin America

Author

Dominguez-Rojas, Jesus Ángel, primary, Vásquez-Hoyos, Pablo, additional, Pérez-Morales, Rodrigo, additional, Monsalve-Quintero, Ana María, additional, Mora-Robles, Lupe, additional, Diaz-Diaz, Alejandro, additional, Torres, Silvio Fabio, additional, Castro-Dajer, Ángel, additional, Cabanillas-Burgos, Lizeth Yuliana, additional, Aguilera-Avendaño, Vladimir, additional, Cantillano-Quintero, Edwin Mauricio, additional, Camporesi, Anna, additional, Agulnik, Asya, additional, Mukkada, Sheena, additional, Alvarado-Gamarra, Giancarlo, additional, Rojas-Soto, Ninoska, additional, Mendieta-Zevallos, Ana Luisa, additional, Tello-Pezo, Mariela Violeta, additional, Vásquez-Ponce, Liliana, additional, Lasso-Palomino, Rubén Eduardo, additional, Pérez-Arroyave, María Camila, additional, Trujillo-Honeysberg, Mónica, additional, Mesa-Monsalve, Juan Gonzalo, additional, Pardo González, Carlos Alberto, additional, López Cubillos, Juan Francisco, additional, Gonzalez-Dambrauskas, Sebastián, additional, and Coronado-Munoz, Alvaro, additional

Published
2022
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15. Aportes de la educación religiosa escolar y el pensamiento humanista de Emmanuel Mounier en la construcción de persona en estudiantes de grado sexto y séptimo del colegio santa teresita del niño Jesús, ubicado en la ciudad de Barrancabermeja, Santander

Author

Quintero, Edwin Gelvis and Camargo Chaparro, Rafael Ernesto

Subjects
educación religiosa, Licenciatura en Filosofía y Educación Religiosa, educación
Abstract

La educación ha sido el pilar fundamental de todas las culturas y civilizaciones; ya en los primeros humanos se empezó a notar un deseo de aprender manifestado en las dificultades que la naturaleza les imponía, tales como la adquisición de alimentos, atuendos para abrigar sus cuerpos y el desarrollo paulatino de las herramientas de caza. Dichos aprendizajes fueron durante milenios el producto del ensayo y el error perpetuados a través de la tradición oral (Marescalchi, LasHeras, Martínez de Pérez, Elisa de Yong, & Ramallo, 2018, pág. 13). Licenciado en Filosofía y Educación Religiosa http://www.ustadistancia.edu.co/?page_id=3956 Pregrado

Published
2021

16. CHANGES IN ELECTROLYTE TRANSMITTANCE AT 254 nm ACCORDING TO THE STATE OF HEALTH OF LEAD ACID BATTERIES.

Author

García QUINTERO, Edwin and Alfredo PALACIO-FERNÁNDEZ, Jose

Subjects
*ELECTRICAL energy, *ELECTROLYTES, *ENERGY storage, *ENERGY management, *LEAD-acid batteries, *ELECTRIC batteries
Abstract

The estimation of the state of health (SOH) of lead-acid batteries for electrical energy storage is an important factor when planning their replacement and energy management. There are many methods to calculate this parameter. The novelty of this work is that it employs an optical method that produces compelling results showing the variation of the UVC transmittance of the electrolyte when the battery has different SOH levels, which is a novel alternative to the existing one of ampere counting, which is also experimented within this work. [ABSTRACT FROM AUTHOR]

Published
2022
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20. Reflexiones en torno a un proyecto educativo. Universidad Católica de Colombia y su aporte al pacto educativo global

Author

Horta-Vásquez, Edwin de Jesús, Ospina-Hernández, Carlos Arturo, Bonilla-Arango, Eduar, Chaves-Quintero, Edwin Germán, Ramos-Cárdenas, Francy Elena, Romero-Sierra, María Cristina, Guarín-Ramírez, Edgar Antonio, Cadavid-Claussen, María Victoria, Nossa-Ramos, Diana Constanza, Ferrari, Francesco, Bolívar-Ramírez, Marisol, Garzón-Pascagaza, Édgar Javier, Garnica-Ríos, Francy Liliana, Vergara-Gómez, Luis Miguel, and Cruz-Vera, Dalia Santa

Subjects
EDUCACIÓN UNIVERSITARIA-COLOMBIA, UNIVERSIDAD CATÓLICA DE COLOMBIA-HISTORIA
Abstract

Este libro conmemora las Bodas de Oro de la Universidad Católica de Colombia, 1970 -2020, así como los veinte años de vida de su Departamento de Humanidades y Centro de Pastoral Universitaria. En este marco celebrativo, la presente publicación recoge una colección de selectos artículos de gran valor académico y ofrece profundas e interesantes reflexiones en el campo de las Humanidades. El volumen se divide en dos partes: la primera fija su atención en el estudio teórico de los fundamentos misionales de la Universidad; la segunda se enfoca en la aplicación práctica de la Misión en las distintas actividades propuestas por la Alma Mater. La primera sección, “Elementos históricos y misionales”, analiza los lineamientos de la Misión desde una triple perspectiva: antropológica, educativa y filosófica, con el fin de resaltar la raíz más genuina y profunda de la identidad de la Universidad. Asimismo, presenta una reseña histórica del nacimiento y consolidación académica tanto del Departamento de Humanidades como de la Pastoral Universitaria, y aborda de manera original la concepción de educación como acto humano de naturaleza moral. La segunda sección, “Iniciativas y desarrollo académico”, presenta las diferentes iniciativas de formación que, en consonancia con la Misión de esta Casa de Estudios y su Proyecto Educativo Institucional, se han adelantado en los últimos años. Se hace aquí el análisis y reflexión sobre el matrimonio y la familia a la luz de la enseñanza de la Iglesia y los Principios de la Universidad; el voluntariado universitario y su servicio a la Misión Institucional; la lectura y la escritura como eje transversal del Departamento de Humanidades; y otras perspectivas de igual riqueza. Las valiosas reflexiones antropológico-educativas, cobijadas al calor del nacimiento e historia de la Alma Mater, brindan al lector razones potentes para internarse en la lectura de esta obra, que marcará un hito significativo en la vida universitaria. 1a. PRÓLOGO. PRIMERA PARTE: ELEMENTOS HISTÓRICOS Y MISIONALES. SEGUNDA PARTE: INICIATIVAS Y DESARROLLO ACADÉMICO.

Published
2021

21. Methodology for the observation of radio sources using Ku‐band compact radio telescopes.

Author

Galeano, David, Quintero, Edwin A., and Salazar, Miguel A.

Subjects
*RADIO telescopes, *RADIO waves, *RADIO astronomy, *BRIGHTNESS temperature, *ASTRONOMICAL observatories, *DIRECT broadcast satellite television, *RADIO sources (Astronomy)
Abstract

Given the rise of satellite television, radio telescopes in the Ku‐band (12–18 GHz) constitute a potential alternative to introduce low‐scale astronomical observatories and amateur astronomers to radio astronomy. In this paper, we show a methodology for the calibration of Ku‐band radio telescopes and the evaluation of the techniques used for the observation of celestial bodies in this frequency range. To reduce the pointing error, we present a method of observation through matrix windows around the Sun. By observing the solar transits, our methodology allows to determine the system temperature, the beamwidth, the gain, the effective area, and the efficiency of the radio telescope. In addition, we developed the Compact Radio Telescope (CRT) software, designed to perform the calibration, and carry out observations. We tested our methodology with the Ku‐band radio telescope of the Observatorio Astronómico of the Universidad Tecnológica de Pereira (OAUTP), Colombia. After observing the Sun and the Moon, we obtained a brightness temperature of 8,600 ± 800 K and 240 ± 50 K, and radiation fluxes of 2,970,000 ± 690,000 Jy and 55,000 ± 10,000 Jy, respectively. These observations demonstrated the usefulness of our methodology and CRT software in the calibration of compact Ku‐band radio telescopes for the observation of celestial bodies in radio waves. [ABSTRACT FROM AUTHOR]

Published
2022
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25. Recuperación de Centro Fundacional de Bosa

Author

Rojas-Quintero, Edwin Arley and Reyes-Restrepo, Alejandro

Subjects
POBLACIÓN, IDENTIDAD FUNDACIONAL, PERTENENCIA, URBANA, HABITANTES, RENOVACIÓN URBANA
Abstract

Artículo de grado Este documento tiene como fin, el mostrar cómo fueron los procesos del proyecto de grado, y su desarrollo desde la parte esquemática basada en problemáticas del sector a intervenir, en una escala urbana y arquitectónica, de un desarrollo en base a las necesidades de la población flotante del lugar, caracterizando como punto clave la inclusión y el ambiente, todo esto para poder lograr un proyecto de interacción para los jóvenes del lugar a los que va dirigido el proyecto arquitectónico, dándole un carácter de pertenecía al lugar, y una recuperación del mismo, de esta manera se logro el desarrollo de Centro Fundacional de Bosa, logrando aplicar todo lo aprendido durante la carrera y así poder desarrollar un proyecto que se acople a todas sus necesidades y funciones. Pregrado Arquitecto Resumen 1. Introducción 2. Metodología 3. Resultados 4. Diagnóstico 5. Propuesta General Bosa Centro 6. Estrategias de diseño 7. Propuesta centro fundacional de Bosa 8. Discusión 9. Arquitectura participativa Conclusiones: Agradecimientos: Referencias

Published
2020

26. Trabajo de grado : Equipos para ensayos de 'tilt test' y 'carga puntual'

Author

Gaona Gama, Cesar Estiben, Rodriguez Quintero, Edwin Fernando, and Méndez Zuluaga, José Rodrigo

Subjects
Ingeniería civil, Rock mechanics, Ángulo básico, Point load resistance index, Mecánica de rocas, Indice de resistencia a carga puntual, Macizo rocoso, Rock mass, Equipos, Basic angle
Abstract

En los estudios concernientes a la rama de la mecánica de rocas, se requiere de equipos especializados que permitan la ejecución de ensayos y pruebas en campo. Dos de estos ensayos son el de carga puntual y tilt test, los cuales permiten determinar de manera rápida datos para estimar el índice de resistencia a carga puntual de la matriz rocosa y el ángulo de fricción básico de la roca. Por tanto, se implementó el diseño y construcción de los equipos de tilt test y carga puntual, para realizar investigaciones en campo o en laboratorio, con respecto a parámetros de resistencia que influyen en el comportamiento mecánico los macizos rocosos. En primer lugar, se recolectó información sobre los ensayos y equipos para su desarrollo, se elaboraron los diseños de los equipos de tilt test y carga puntual y posteriormente se dió la construcción. Para cada uno de ellos se elaboró un manual, ficha técnica y la guía de ensayo. Finalmente se verificó el funcionamiento de los equipos por medio de la ejecución de los ensayos correspondientes, se logró observar que varias de las muestras analizadas se encuentran dentro de rangos establecidos por otras investigaciones. Al diseñar los equipos los factores de seguridad fueron óptimos, estos logran establecerse bajo aspectos técnicos, económicos y de calidad, lo que permite concluir que son confiables para ser usados en estudios e investigaciones. In studies concerning the branch of rock mechanics, specialized equipment is required that allows the execution of field trials and tests. Two of these tests are the one of punctual load and tilt test, which allow to quickly determining data to estimate the index of resistance to punctual load of the rock matrix and the basic friction angle of the rock. Therefore, the design and construction of tilt test and point loading equipment was implemented, to carry out field or laboratory research, with respect to resistance parameters that influence the rocky massif's mechanical behavior. First, information was collected on the tests and equipment for its development, the designs of the tilt test and point loading equipment were developed, and then the construction was given. For each one of them, a manual, technical sheet, and the test guide were elaborated. Finally, the operation of the equipment was verified through the execution of the corresponding tests, it was observed that several of the analyzed samples are within the ranges established by other investigations. When designing the equipment, the safety factors were optimal; these are established under technical, economic and quality aspects, which allows concluding that they are reliable for use in studies and research. Pregrado

Published
2019

27. Sistema de Inventario y Facturación en Tienda Variedades Camila en el municipio de Condega, segundo semestre 2018

Author

Arauz Quintero, Edwin Francisco and Zeledón Rivera, Darling Concepción

Subjects
658.787 Control de Inventario, W 26.55.S6 Software, 657.458 Control Interno
Abstract

El presente trabajo de investigación está orientado a la implementación de un sistema de inventario y facturación en tienda variedades Camila en el municipio de Condega en el segundo semestre 2018, con el objetivo que permita la agilización automatizada en los procesos de información. Para la realización de este sistema se utilizó la metodología de desarrollo ágil Scrum creada por Schwaber y Sutherland, que permite trabajar en una serie de interacciones en equipo. Esta metodología consta de un sprint con 4 fases: planeación, desarrollo, revisión y retrospectiva. Como resultado de esta investigación se obtuvo un sistema automatizado que facilita la realización de procesos de inventario y facturación.

Published
2019

33. Size and Shape Constraints of (486958) Arrokoth from Stellar Occultations

Author

Buie, Marc W., primary, Porter, Simon B., additional, Tamblyn, Peter, additional, Terrell, Dirk, additional, Parker, Alex Harrison, additional, Baratoux, David, additional, Kaire, Maram, additional, Leiva, Rodrigo, additional, Verbiscer, Anne J., additional, Zangari, Amanda M., additional, Colas, François, additional, Diop, Baidy Demba, additional, Samaniego, Joseph I., additional, Wasserman, Lawrence H., additional, Benecchi, Susan D., additional, Caspi, Amir, additional, Gwyn, Stephen, additional, Kavelaars, J. J., additional, Ocampo Uría, Adriana C., additional, Rabassa, Jorge, additional, Skrutskie, M. F., additional, Soto, Alejandro, additional, Tanga, Paolo, additional, Young, Eliot F., additional, Stern, S. Alan, additional, Andersen, Bridget C., additional, Arango Pérez, Mauricio E., additional, Arredondo, Anicia, additional, Artola, Rodolfo Alfredo, additional, Bâ, Abdoulaye, additional, Ballet, Romuald, additional, Blank, Ted, additional, Bop, Cheikh Tidiane, additional, Bosh, Amanda S., additional, Camino López, Matías Aarón, additional, Carter, Christian M., additional, Castro-Chacón, J. H., additional, Caycedo Desprez, Alfonso, additional, Caycedo Guerra, Nicolás, additional, Conard, Steven J., additional, Dauvergne, Jean-Luc, additional, Dean, Bryan, additional, Dean, Michelle, additional, Desmars, Josselin, additional, Dieng, Abdou Lahat, additional, Bousso Dieng, Mame Diarra, additional, Diouf, Omar, additional, Dorego, Gualbert Séraphin, additional, Dunham, David W., additional, Dunham, Joan, additional, Durantini Luca, Hugo A., additional, Edwards, Patrick, additional, Erasmus, Nicolas, additional, Faye, Gayane, additional, Faye, Mactar, additional, Ferrario, Lucas Ezequiel, additional, Ferrell, Chelsea L., additional, Finley, Tiffany J., additional, Fraser, Wesley C., additional, Friedli, Alison J., additional, Galvez Serna, Julián, additional, Garcia-Migani, Esteban A., additional, Genade, Anja, additional, Getrost, Kai, additional, Gil-Hutton, Ricardo A., additional, Gimeno, German N., additional, Golub, Eli Joseph, additional, González Murillo, Giovanni Francisco, additional, Grusin, Michael D., additional, Gurovich, Sebastian, additional, Hanna, William H., additional, Henn, Santiago M., additional, Hinton, P. C., additional, Hughes, Paul J., additional, Josephs Jr, John David, additional, Joya, Raul, additional, Kammer, Joshua A., additional, Keeney, Brian A., additional, Keller, John M., additional, Kramer, Emily A., additional, Levine, Stephen E., additional, Lisse, Carey M., additional, Lovell, Amy J., additional, Mackie, Jason A., additional, Makarchuk, Stanislav, additional, Manzano, Luis E., additional, Mbaye, Salma Sylla, additional, Mbaye, Modou, additional, Melia, Raul Roberto, additional, Moreno, Freddy, additional, Moss, Sean K., additional, Ndaiye, Diene, additional, Ndiaye, Mapathe, additional, Nelson, Matthew J., additional, Olkin, Catherine B., additional, Olsen, Aart M., additional, Ospina Moreno, Victor Jonathan, additional, Pasachoff, Jay M., additional, Pereyra, Mariana Belen, additional, Person, Michael J., additional, Pinzón, Giovanni, additional, Pulver, Eduardo Alejandro, additional, Quintero, Edwin A, additional, Regester, Jeffrey R., additional, Resnick, Aaron Caleb, additional, Reyes-Ruiz, Mauricio, additional, Rolfsmeier, Alex D., additional, Ruhland, Trina R., additional, Salmon, Julien, additional, Santos-Sanz, Pablo, additional, Santucho, Marcos Ariel, additional, Sepúlveda Niño, Diana Karina, additional, Sickafoose, Amanda A., additional, Silva, José S., additional, Singer, Kelsi N., additional, Skipper, Joy N., additional, Slivan, Stephen M., additional, Smith, Rose J. C., additional, Spagnotto, Julio C., additional, Stephens, Andrew W., additional, Strabala, Samuel D., additional, Tamayo, Francisco J., additional, Throop, Henry B., additional, Torres Cañas, Andrés David, additional, Toure, Labaly, additional, Traore, Alassane, additional, Tsang, Constantine C. C., additional, Turner, Jake D., additional, Vanegas, Santiago, additional, Venable, Roger, additional, Wilson, John C., additional, Zuluaga, Carlos A., additional, and Zuluaga, Jorge I., additional

Published
2020
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35. Monitoreo del Clima Espacial desde Colombia Mediante Radio Receptores Butterworth de Orden Superior

Author

Jaramillo Alvarado, Andrés Felipe, Galvis Rodríguez, Hamilton David, and Quintero, Edwin Andrés

Subjects
radiotelescopio, Español [Idioma], Butterworth filters, clima espacial, space climate, solar flares, radio telescope, filter banks, filtros Butterworth, Bancos de filtros, fulguraciones solares
Abstract

Resumen Contexto: Las fulguraciones solares y las eyecciones de masa coronal liberan al espacio grandes cantidades de radiación que, al alcanzar las capas exteriores de la atmósfera terrestre, alteran sus características eléctricas. El conjunto de fenómenos derivados de esta interacción se conoce como clima espacial y sus consecuencias incluyen fallas en los sistemas de geolocalización, las telecomunicaciones, las operaciones vía satélite, el seguimiento espacial, la radionavegación y la sobrecarga de redes eléctricas. Método: En este trabajo se presenta el desarrollo de un radio receptor que permite adelantar el monitoreo del clima espacial desde Colombia. Además, se describe una metodología novedosa para el diseno de filtros analógicos de orden superior de característica Butterworth, a partir de la interconexión en paralelo de bancos de filtros de primero y segundo orden, obteniéndose la función de transferencia deseada. Resultados: El radio receptor desarrollado se instaló en la estación de monitoreo del clima espacial del Observatorio Astronómico de la Universidad Tecnológica de Pereira (OAUTP), Colombia, entrando en operación en diciembre de 2015. Desde esa fecha, el sistema ha registrado la actividad solar de forma ininterrumpida, detectando cuatro potentes explosiones solares clase C presentadas los días 15, 16 y 17 del mes de abril de 2016. Las señales recibidas por el radio receptor son enviadas a la base de datos global del Stanford Solar Center, de Stanford University, con el código UTP 0383. Conclusiones: El radio telescopio desarrollado permite al Observatorio Astronómico OAUTP adelantar el monitoreo del clima espacial y de la actividad solar, enviando la información recibida a repositorios de acceso público a nivel mundial. No existen otros receptores de radio de este tipo operando en la actualidad en países ecuatoriales, una región de la Tierra donde los efectos de la actividad solar pueden conducir a nuevos conocimientos que aporten en la comprensión de este fenómeno. Además, los filtros de orden superior diseñados pueden tener aplicación en el campo de la instrumentación para la medición de señales eléctricas biomédicas. Abstract Context: Solar flares and coronal mass ejections release great amounts of radiation to the outer space, altering the electrical properties of external layers in earth's atmosphere. The set of phenomena derived from this interaction is known as space weather, and its consequences include failures in the geolocation systems, telecommunications, satellite based operations, spatial tracking, radio navigation and overload of electrical network. Method: This paper presents the development of a radio receptor enabling monitoring of space weather from Colombia. A novel methodology to design analog high-order Butterworth filters is described, based on the parallel interconnection of filtering banks of first and second order, yielding the realization of the desired transfer function. These filters are then used to build a radio receptor to monitor the mentioned solar activity. Results: The radio receptor was installed in a space weather monitoring station in Colombia, specifi- cally in the Astronomical Observatory of the Universidad Tecnologica de Pereira (OAUTP), becoming operational on December 2015. From that date, the radio receptor has been registering solar activity uninterruptedly; and it has been able to detect four powerful solar explosions of class C, registered on the days 15, 16 and 17th in the month of April 2016. The received signals are sent to the Stanford Solar Center of Stanford University, with the code UTP 0383. Conclusions: The newly developed radio telescope is enabling the Astronomical Observatory OAUTP to monitor space weather and solar activity, sensing and registering such information in global publicly available repositories. No other radio receptors of this kind are currently operating from equatorial countries, a region on Earth were the effects of solar activity may lead to new insights in understanding this phenomena. Besides, we anticipate that the designed high order filters may have application as well in instruments for sensing biomedical electrical signals.

Published
2017

37. Análisis y caracterización de los operadores económicos autorizados en Colombia

Author

Álvarez Quintero, Edwin Mauricio, Peña Campaz , Ángela María, Mejía Espinal , Fabián Andrés, and Asesor Tesis

Subjects
Operador Económico, Cadena de abastecimiento, Comercio internacional, Logística, Trabajos de grado, Producción intelectual registrada - Universidad Icesi, Departamento de Economía, Seguridad, Economía
Abstract

Debido a los problemas que se han presentado en el comercio internacional anteriormente, y en especial dentro de la cadena de abastecimiento, surge la figura logística de Operador Económico Autorizado. El Operador Económico Autorizado está certificado como un operador seguro y confiable que está encargado de garantizar la seguridad dentro de la cadena de abastecimiento, y de esta manera facilitar el comercio internacional. Así mismo, la implementación de esta figura logística en Colombia, como en otros países, pretende que más empresas estén interesadas en certificarse con el objetivo de aumentar su nivel de competitividad.

Published
2016

39. TALLER: PRÁCTICAS DE LABORATORIO SUSTENTABLES; UN DIÁLOGO DESDE EL CUIDADO DEL AMBIENTE Y LA ENSEÑANZA DE LA FÍSICA. UNA PROPUESTA DESDE LAS MÁQUINAS DE GOLDBERG

Author

Albornoz Villalobos, Paola Andrea, primary, Berdugo Lombana, Karen Tatiana, additional, Camargo Castro, German David, additional, Casadiegos Fonseca, Nidia Raque, additional, Cortes Hernández, Carlos German, additional, Cruz Amaya, Sonia Stefanny, additional, Cuaran Ordoñez, Felipe Arnoldo, additional, Delgado Quintero, Edwin Alexander, additional, Díaz Piraquive, José Leonardo, additional, Flórez Tovar, Jhonny, additional, González Gacheta, Andrés Felipe, additional, Gordillo Chaparro, Leonel Alexis, additional, Hernández Cepeda, Nohora Alejandra, additional, Herrera Acero, Ronald Alexander, additional, Jimenéz Cárdenas, Diego Javier, additional, Mancipe Peña, Jorge Jhonatan, additional, Moreno Arias, Cristian Camilo, additional, Moscoso Riaño, Cristian Antonio, additional, Ojeda Acosta, Diego Fernando, additional, Páez Pedraza, Julián Andrés, additional, Palacio Rangel, Jahyson León, additional, Ramírez Méndez, Cristian Camilo, additional, Rodríguez Villamil, Jean Paul, additional, Salinas Cardona, Dora Liceth, additional, Sierra Riaño, Natalia Ivonne, additional, Tovar Quimbayo, Stefanai, additional, Uribe García, María Mónica, additional, Villamil Beltrán, Natalia, additional, Villamil Turga, Alejandro, additional, and Martínez, Camilo, additional

Published
2016
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40. Study of the effect of silver in the mechanical properties and electrical conductivity of duralumins (Al-4%Cu-0.5%Mg)

Author

Correa-Avendaño, Reinaldo, Sánchez-Londoño, Héctor Darío, and García-Quintero, Edwin

Subjects
fases, aging, efecto Joule en metales, homogenization, homogenización, electrical resistance of metals, hardening by precipitation, metals Joule effect, Duraluminios, endurecimiento por precipitación, phases, envejecimiento, resistencia eléctrica de metales, Duralumin
Abstract

This study evaluated the effect of the silver content of Al-Cu based alloys on the microstructure, the tensile strength, the electrical resistance and the temperature increase with the passage of electric current (Joule effect). For that purpose, Al-4% Cu-0, 5% Mg alloys were tested with silver content in proportions of 1.5%, 2.5% and 3.5%. Precipitation hardening was carried out by homogenization heat treatment of solid solutions. The microstructure analysis was carried out using optical microscope and SEM, Vickers hardness tests was also performed, tests of tensile strength and electrical conductivity, which were compared with the alloy A356-T6. The results of this research show that the increase of silver in the alloy increased tensile strength and decreases the resistivity. By SEM and EDS analysis of the phase theta (CuAl2), Al6 (Cu, Fe) and Al7Cu2Fe was observed. En este trabajo se evalúa el efecto del contenido de plata de las aleaciones base Al-Cu en la microestructura, la resistencia a la tracción, la resistencia eléctrica y el incremento de la temperatura con el paso de la corriente eléctrica (efecto Joule). Para tal fin, fueron evaluadas las aleaciones Al-4%Cu-0,5%Mg con contenidos de plata en proporciones del 1,5%, 2,5% y 3,5%. El endurecimiento por precipitación se llevó a cabo mediante tratamientos térmicos de homogenización por solución sólida. El análisis de la microestructura se realizó mediante el microscopio óptico y SEM, además, se realizó análisis de dureza Vickers, ensayos de resistencia a la tracción y pruebas de conductividad eléctrica, las cual se compararon con la aleación A356-T6. Los resultados de esta investigación muestran que el aumento de la plata en la aleación aumenta la resistencia la tracción y disminuye su resistividad. Mediante el análisis del SEM y EDS se observó la fase teta (CuAl2), Al6(Cu, Fe) y Al7Cu2Fe.

Published
2014

41. Estudio del efecto de la plata en la conductividad eléctrica y propiedades mecánicas de los duraluminios al-4% Cu-0.5 Mg con adiciones de plata

Author

Sánchez Londoño, Héctor Darío, García Quintero, Edwin, and Correal, Reinaldo

Subjects
Propiedades mecánicas y microestructurales, Plata, Endurecimiento por precipitación, Propiedades mecánicas de los materiales, Homogenización, Resistencia a la tracción, Envejecimiento (Materiales), Conductividad eléctrica
Abstract

RESUMEN: En este trabajo se evalúa el efecto del contenido de plata de las aleaciones base Al-Cu en la morfología de la microestructura, la resistencia a la tracción, la resistencia eléctrica y el incremento de la temperatura con el paso de la corriente eléctrica (efecto Joul). Para tal fin, fueron evaluadas las aleaciones Al-4%Cu-0,5%Mg con contenidos de plata en proporciones del 1,5%, 2,5% y 3,5%. El endurecimiento por precipitación se llevó a cabo mediante tratamientos térmicos de homogenización por solución sólida, enfriamiento rápido (temple) y envejecimiento artificial por diferentes tiempos y temperaturas. El análisis de la microestructura se realizó mediante el microscopio óptico y SEM, además, se midieron durezas Vickers, ensayos de resistencia a la tracción y pruebas de conductividad eléctrica, las cuales se compararon con la aleación A356-T6. ABSTRACT: This paper evaluates the effect of the silver content of the Al-Cu based alloys in the microstructure morphology, tensile strength, electrical resistance and temperature increasing with the electric current flow (Joul Effect). Therefore, the alloys were evaluated Al-4% Cu-0, 5% Mg with silver content in proportions of 1.5%, 2.5% and 3.5%. Precipitation hardening was carried out by homogenization heat treatments solid solution, rapid cooling (quenching) and artificial aging for different times and temperatures. The microstructure analysis was carried out using optical microscope and SEM also was Vickers hardness tests, tests of tensile strength and electrical conductivity tests, which were compared with the alloy A356-T6.

Published
2014

44. Supuestos y transformaciones de 'La crítica literaria democrática' - de Hernán Vidal a Idelber Avelar

Author

Camacho Quintero, Edwin Orlando

Subjects
Piglia, Ricardo - 1941 - Respiración artificial - Crítica e interpretación, Vidal, Hernán - Crítica e interpretación, Literatura, Avelar, Idelber - 1968 - Crítica e interpretación, Piglia, Ricardo - 1941 - La ciudad ausente - Crítica e interpretación, Autoritarismo en la literatura, Crítica literaria
Abstract

Magíster en Literatura Maestría

Published
2014

46. Relativistic models of thin disks immersed in a Robertson-Walker type spacetime

Author

García Quintero, Edwin

Subjects
Thin disks, General Relativity and Quantum Cosmology, General relativity, Robertson-walker metric, Soluciones exactas, Métrica de Robertson-Walker, Películas delgados, Métricas, Exact solutions, Relatividad general
Abstract

RESUMEN: Usando el método de “desplazamiento, corte y reflexión” se construyen algunos modelos relativistas exactas de soluciones que representan discos delgados de extensión infinita, dependientes del tiempo y hechos de un fluido perfecto, basados en la métrica de Robertson-Walker. Se presentan dos familias simples de modelos de discos basados sobre el espacio tiempo de Robertson-Walker que admiten colineaciones de Ricci y de materia. Se obtienen modelos de discos que satisfacen todas las condiciones de energía.ABSTRACT: Using the well known “displace, cut and reflect” method used to generate disks from given solutions of Einstein field equations, we construct some relativistic models of time dependent thin disks of infinite extension made of a perfect fluid based on the Robertson-Walker metric. Two simple families of models of disks based on Robertson-Walker solutions admitting Matter and Ricci collineations are presented. We obtain disks that are in agreement with all the energy conditions.

Published
2013

47. Nuevo factor para la caracterización de huecos de tensión

Author

García Quintero, Edwin, Villada Duque, Fernando, and Cadavid Carmona, Diego

Subjects
characterization of voltage sags, Calidad de la energía, Power quality, caracterización de huecos de tensión, index for voltage sags, voltage sags, huecos de tensión, índices de huecos de tensión
Abstract

En el presente trabajo se plantea un nuevo factor que permite caracterizar cada hueco de tensión de manera individual, actuando como una reseña que lo identifica de manera unívoca. Para comprobar dicha caracterización se aplica el factor propuesto con otros reportados, como la energía no suministrada (contemplado en la norma IEEE P1564) que se utiliza ampliamente en la obtención de algunos índices importantes, a una serie de registros reales medidos sobre la red eléctrica y a otros obtenidos mediante simulaciones. También se analizan las repercusiones que tienen los huecos de tensión sobre el comportamiento de algunos elementos sensibles a ellos, con el fin de contrastar los resultados y superar algunas falencias presentadas por los factores de caracterización más utilizados actualmente. El nuevo factor propuesto puede ser útil para aplicaciones como obtención de índices, entre otros. A new factor which allows characterizing voltage sags in an individual way is presented in this paper. The factor acts revises and identifies voltage sags in a univocal way. In order to verify such characterization, the proposed factor is applied and compared with other reported factors, such as: not supplied energy (referred to in IEEE P1564 Norm) which is widely used for obtaining some important indexes for a series of real registrations measured on the electric network and to others obtained by simulations. The effect of voltage sags on the behavior of some sensitive elements is also analyzed. The idea is to contrast results and overcome some lacks presented by the most used characterization factors nowadays. The new proposed factor will be useful for obtaining indexes, among many other applications.

Published
2011

48. Metodología para la evaluación de huecos de tensión

Author

García Quintero, Edwin and Fuster Roig, Vicente

Subjects
Calidad de la energía, Power quality, classification of voltage sags, voltage sags, clasificación de huecos de tensión, huecos de tensión
Abstract

Se plantea una nueva metodología que permite evaluar los huecos de tensión y paliar algunas deficiencias encontradas en las metodologías de clasificación existentes en la literatura. Para ello se aplica la metodología fasorial, encontrada en la literatura, y la nueva metodología propuesta sobre una base de datos de registros reales medidos en una campaña de medidas sobre la red eléctrica española. El objetivo es contrastar las deficiencias y ventajas encontradas. La metodología propuesta será útil para aplicaciones como la obtención de índices. A new methodology for the evaluation of voltage sags and a decrease of the insufficiency found in some classification methodologies on literature are presented. To achieve this, the phasorial method is applied from the literature, and a new methodology suggested on a real register data base from measurements campaigns on the power supply in Spain. The insufficiencies and the advantages are contrasted. The new proposed method will be useful on applications such as getting indexes.

Published
2010

50. Redes inalámbricas

Author

Pérez Quintero, Edwin Alejandro and Lalinde Pulido, Juan Guillermo

Subjects
Sistema de Comunicación inalámbrica, REDES DE ÁREA AMPLIA (COMPUTADORES), Metropolitan area networks (computer networks), REDES DE ÁREA METROPOLITANA (COMPUTADORES), REDES DE COMPUTADORES, REDES DE ÁREA LOCAL (COMPUTADORES), Topology, TOPOLOGÍA, Wide area networks (computer networks), Comunicaciones Inalámbricas, SISTEMAS DE TRANSMISIÓN DE DATOS, Data transmission systems, Digital communications, Local area networks (Computer networks), Proyecto de Grado. Ingeniería de Sistemas, COMUNICACIONES DIGITALES, Computer networks, Redes Móviles Inalámbricas
Published
2008

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