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Contribución de las nuevas tecnologías para el futuro de la educación superior a distancia

Enrique Pontes González, Héctor Barrón Soto
1996 RIED: Revista Iberoamericana de Educación a Distancia  
INTRODUCCIÓN Más allá del embargo tautológico en el que históricamente han desembocado gran parte de las discusiones acerca de las diferencias y similitudes entre sistemas educativos presenciales, abiertos y a distancia, parece haber una coincidencia en enmarcar los propósitos de cualquiera de estos sistemas educativos de acuerdo a las necesidades de la sociedad en la que se inscriben. Esto sucede particularmente en los países de regiones en proceso de desarrollo, como la de América Latina,
more » ... e las direcciones de la educación pueden guiarse aún a través de organismos centralizados vinculados estrechamente con la estructura gubernamental. La dimensión de los proyectos educativos, así, responde en esencia a la satisfacción de requerimientos sociales bien detectados, y aún más, a la
doaj:c6ff9a9c20d14412a11969e9a40384ed fatcat:ep2d5zkygzbelmuy2eoyfqtxhe

Los multimedia en el sistema Universidad Abierta de la UNAM: Evaluación y perspectiva

Rodolfo Herrero Ricaño, Enrique Pontes González, Héctor Barrón Soto, Luis Monzón García
1993 RIED: Revista Iberoamericana de Educación a Distancia  
Rodolfo Herrero Ricaflo (1) Enrique Pontes González (2) Héctor Barrón Soto (3) Luis Monzón García (4) INTRODUCCION La aparición de nuevas tecnologías y recursos para la comunicación en el campo de  ... 
doaj:9a961c48fa2546e0bc64bc54a6872854 fatcat:nu6pjaglhbcdrewnu4b3minlfq

Embodied hyperacuity from Bayesian perception: Shape and position discrimination with an iCub fingertip sensor

Nathan F. Lepora, Uriel Martinez-Hernandez, Hector Barron-Gonzalez, Mat Evans, Giorgio Metta, Tony J. Prescott
2012 2012 IEEE/RSJ International Conference on Intelligent Robots and Systems  
Barron-Gonzalez and T. Prescott are with the Adaptive Touch Laboratory at Sheffield, Department of Psychology, University of Sheffield, Western Bank, Sheffield S10 2TN, UK.  ... 
doi:10.1109/iros.2012.6385649 dblp:conf/iros/LeporaMBEMP12 fatcat:xayzhh2a4fdxzddefz5tcpa35q

Prevalence of conventional risk factors and lipid profiles in patients with acute coronary syndrome and significant coronary disease

Hector Gonzalez-Pacheco, Maite Vallejo, Alfredo Altamirano-Castillo, Jesus Vargas-Barron, Yigal Pina-Reyna, Pedro Sanchez-Tapia, Carlos Martinez-Sanchez
2014 Therapeutics and Clinical Risk Management  
Among patients with coronary artery disease (CAD), 80%-90% present at least one conventional risk factor. On the other hand, lipid profile modification after a cardiovascular event related to acute coronary syndrome (ACS) has been recognized. The prevalence of conventional risk factors and the lipid profile at the time of admission in patients with ACS and significant CAD (stenosis ≥50%) determined through coronary angiography is not well described. We studied 3,447 patients with a diagnosis of
more » ... ACS and significant CAD with stenosis ≥50%, as shown o n angiography. We recorded the presence of conventional risk factors, including smoking, hypertension, dyslipidemia, and diabetes. In addition, we analyzed the lipid profiles within the first 24 hours of admission. We analyzed the studied population and compared findings according to sex. Most patients (81.7%) were male. ST-elevation myocardial infarction was present in 51.3% of patients, and non-ST-elevation acute coronary syndrome was present in 48.7%. The most frequent risk factor was smoking, which was present in 68% of patients, followed by hypertension (57.8%), dyslipidemia (47.5%), and diabetes (37.7%). In women, the most frequent risk factors were hypertension, diabetes, and dyslipidemia, whereas in men, smoking was the most frequent. We identified at least one risk factor in 95.7% of all patients, two or three risk factors in 62%, and four risk factors in 8.6% of patients. The lipid profile analysis revealed that 85.1% of patients had some type of dyslipidemia, and the most frequent was low levels of high-density lipoprotein cholesterol (68.6% of cases). We found at least one conventional risk factor in 95.7% of patients with ACS and significant CAD. The lipid profile analysis revealed that two thirds of cases had low high-density lipoprotein cholesterol levels.
doi:10.2147/tcrm.s67945 pmid:25328397 pmcid:PMC4199556 fatcat:iuxururwkzelhoipd5s2xnms4a

Evaluation of nitazoxanide and oxfendazole efficacy against cystic echinococcosis in naturally infected sheep

Cesar M Gavidia, Armando E Gonzalez, Luis Lopera, Cesar Jayashi, Roxana Angelats, Eduardo A Barron, Berenice Ninaquispe, Lucia Villarreal, Hector H Garcia, Manuela R Verastegui, Robert H Gilman
2009 American Journal of Tropical Medicine and Hygiene  
Cystic echinococosis (CE) is a public health problem caused by Echinococcus granulosus. We aimed to determine the efficacy of nitazoxanide (NTZ) and oxfendazole (OXF) against CE in naturally infected sheep. A total of 151 ewes were assigned to the following groups: 15 mg/kg of NTZ weekly for five weeks (NTZ5); two rounds of 15 mg/ kg of NTZ a day for five days (NTZ5x2) two weeks apart; 30 mg/kg of OXF a week for 11 weeks (OXF11); 30 mg/kg of OXF plus 15 mg/kg of NTZ a week for 11 weeks
more » ... ; and the control group. OXF11 and OXF/NTZ decreased the number of fertile cysts, increased the number of degenerated cysts, and were more efficacious (49.6-61.2%) against lung cysts and liver cysts (91.8-100%) than any other treatment group. OXF might be an additional strategy for control programs and an optional treatment of human CE after it is licensed.
pmid:19270283 pmcid:PMC2673094 fatcat:qxyb5yaxdnbpjozelcnxd4w43y

The Coordinating Role of Language in Real-Time Multimodal Learning of Cooperative Tasks

Maxime Petit, Stéphane Lallee, Jean-David Boucher, Grégoire Pointeau, Pierrick Cheminade, Dimitri Ognibene, Eris Chinellato, Ugo Pattacini, Ilaria Gori, Uriel Martinez-Hernandez, Hector Barron-Gonzalez, Martin Inderbitzin (+5 others)
2013 IEEE Transactions on Autonomous Mental Development  
Barron-Gonzalez are with the Department of Psychology, University of Sheffield, Sheffield, U.K. (e-mail: uriel.mar-tinez@sheffield.ac.uk; hector.barron@sheffield.ac.uk). M. Inderbitzin, A.  ...  Hector Barron is an Engineer with a first degree in computer science. He worked several years in applying computer vision and machine learning upon real-time systems.  ... 
doi:10.1109/tamd.2012.2209880 fatcat:ejywkxkd3baczcjsvxxnkxrdx4

Efecto de la corriente pulsada en el proceso de soldadura GTAW en titanio 6Al4V con y sin metal de aporte

José D. Mosquera-Artamonov, Celso E. Cruz-González, Héctor I. Gala-Barrón, Hugo Gámez-Cuatzin
2016 Revista de Metalurgia  
PALABRAS CLAVE: Corriente; Diseño de experimentos; GTAW; Propiedades mecánicas; Titanio Citation / Cómo citar este artículo: Cruz-González, C.E., Gala-Barrón, H.I., Mosquera-Artamonov, J.D., Gámez-Cuatzin  ...  Cruz-González et al. Revista de Metalurgia 52(3), Julio-Septiembre 2016, e071. ISSN-L: 0034-8570 doi: http://dx.doi.org/10.3989/revmetalm.071 • C.E. Cruz-González et al.  ...  Cruz-González et al. Revista de Metalurgia 52(3), Julio-Septiembre 2016, e071.  ... 
doi:10.3989/revmetalm.071 fatcat:pc6yyu6vkbggven5qo2w4skcqa

Cross-Reaction, Enhancement, and Neutralization Activity of Dengue Virus Antibodies against Zika Virus: A Study in the Mexican Population

Mayra R. Montecillo-Aguado, Alfredo E. Montes-Gómez, Julio García-Cordero, Josselin Corzo-Gómez, Héctor Vivanco-Cid, Gabriela Mellado-Sánchez, J. Esteban Muñoz-Medina, Benito Gutiérrez-Castañeda, Leopoldo Santos-Argumedo, César González-Bonilla, Leticia Cedillo-Barrón
2019 Journal of Immunology Research  
Zika virus (ZIKV), an emerging mosquito-borne flavivirus, has quickly spread in many regions around the world where dengue virus (DENV) is endemic. This represents a major health concern, given the high homology between these two viruses, which can result in cross-reactivity. The aim of this study was to determine the cross-reacting antibody response of the IgM and IgG classes against the recombinant envelope protein of ZIKV (rE-ZIKV) in sera from patients with acute-phase infection of
more » ... clinical forms of dengue, i.e., dengue fever (DF) and dengue hemorrhagic fever (DHF) (before the arrival of ZIKV in Mexico 2010), as well as acute-phase sera of ZIKV patients, together with the implications in neutralization and antibody-dependent enhancement. Differences in IgM responses were observed in a number of DF and DHF patients whose sera cross-reacted with the rE-ZIK antigen, with 42% recognition between acute-phase DHF and ZIKV but 27% recognition between DF and ZIKV. Regarding IgG antibodies, 71.5% from the DF group showed cross-reactivity to rE-ZIKV in contrast with 50% and only 25% of DHF and ZIKV serum samples, respectively, which specifically recognized the homologous antigen. The DHF group showed more enhancement of ZIKV infection of FCRγ-expressing cells compared to the DF group. Furthermore, the DHF group also showed a higher cross-neutralizing ability than that of DF. This is the first report where DF and DHF serum samples were evaluated for cross-reactivity against Zika protein and ZIKV. Furthermore, DENV serum samples cross-protect against ZIKV through neutralizing antibodies but at the same time mediate antibody-dependent enhancement in the sequential ZIKV infection.
doi:10.1155/2019/7239347 pmid:31565661 pmcid:PMC6745170 fatcat:xlozjrepcfa2zeugof6tx3ulc4

Intramyocardial hemorrhage in spontaneously reperfused myocardial infarction

Jesús Vargas-Barrón, Héctor González-Pacheco, Gabriela Meléndez-Ramírez, Francisco Javier Roldán, Félix Damas-De los Sasntos, Aloha Meave-González, Carlos Martínez-Sánchez
Revista de investigación clínica  
OBJECTIVE. The presence of intramyocardial hemorrhage (IMH) is frequent in patients with acute myocardial infarction (AMI) undergoing primary percutaneous coronary intervention (PPCI). We aim for the presence IMH using cMRI in patients who presented AMI and did not undergo PPCI or thrombolysis. Cardiac magnetic resonance has proven to be a highly sensitive method for detect its presence in the ischemic damaged tissue. MATERIAL AND METHODS. Patients admitted with diagnosis of ST elevation
more » ... ial infarction > 24 h after initial presentation and without reperfusion therapy were enrolled in the study. All patients underwent cardiac magnetic resonance for detecting edema, microvascular obstruction and intramyocardial hemorrhage, followed by coronary angiography. RESULTS. Seven male patients, with median age of 53 years, were enrolled. Cardiac magnetic resonance showed that all patients had microvascular obstruction and edema. Two of them had intramyocardial hemorrhage in association with spontaneous reperfusion demonstrated by angiography. CONCLUSION. The results of our study show that in patients with acute myocardial infarction, intramyocardial hemorrhage occurs not only after therapeutic, but also after spontaneous reperfusion. This is the first time that its presence is demonstrated by cardiac magnetic resonance.
pmid:24960319 fatcat:pvgt3gts45ajrn63oyj4gsfqi4

Gender differences and management of stroke risk of nonvalvular atrial fibrillation in an upper middle-income country: Insights from the CARMEN-AF registry

J. Antonio González-Hermosillo, Manuel A. Baños-González, Milton E. Guevara-Valdivia, Jorge A. Vázquez-Acosta, Manuel Odín de los Ríos Ibarra, Kulio A. Aguilar-Linares, Carlos Cantú-Brito, José L. Leiva-Pons, Gerardo Pozas-Garza, Eddie A. Favela-Pérez, Manlio F. Márquez, María Sangeado Santos (+50 others)
2019 International Journal of Cardiology: Heart & Vasculature  
Atrial Fibrillation (AF) is associated with an increased risk of stroke and systemic embolism. Several studies have suggested that female AF patients could have a greater risk for stroke. There is scarce information about clinical characteristics and use of antithrombotic therapies in Latin American patients with nonvalvular AF. To describe the gender differences in clinical characteristics, thromboembolic risk, and antithrombotic therapy of patients with nonvalvular AF recruited in Mexico, an
more » ... pper middle-income country, into the prospective national CARMEN-AF Registry. A total of 1423 consecutive patients, with at least one thromboembolic risk factor were enrolled in CARMEN-AF Registry during a three-year period (2014-2017). They were categorized according to Gender. Overall, 48.6% were women, mean age 70 ± 12 years. Diabetes, smoking, alcoholism, non-ischemic cardiomyopathy, coronary artery disease, and obstructive sleep apnea were higher in men. Most women were found with paroxysmal AF (40.6%), and most men with permanent AF (44.0%). No gender differences were found in the use of vitamin K antagonists (VKA) (30.5% in women vs. 28.0% in men). No gender differences were found in the use of direct oral anticoagulants (DOAC) (33.8% women vs 35.4% men). CARMEN-AF Registry demonstrates that in Mexico, regardless of gender, a large proportion of patients remain undertreated. No gender differences were found in the use of VKA or DOAC.
doi:10.1016/j.ijcha.2018.12.017 pmid:30705937 pmcid:PMC6349010 fatcat:fongqlpk3reutlwq72pnq722ba

Edge and plane classification with a biomimetic iCub fingertip sensor

Uriel Martinez-Hernandez, Nathan F. Lepora, Hector Barron-Gonzalez, Tony Dodd, Tony J. Prescott
2019
The exploration and interaction of humanoid robots with the environment through tactile sensing is an important task for achieving truly autonomous agents. Recently much research has been focused on the development of new technologies for tactile sensors and new methods for tactile exploration. Edge detection is one of the tasks required in robots and humanoids to explore and recognise objects. In this work we propose a method for edge and plane classification with a biomimetic iCub fingertip
more » ... ing a probabilistic approach. The iCub fingertip mounted on an xy-table robot is able to tap and collect the data from the surface and edge of a plastic wall. Using a maximum likelihood classifier the xy-table knows when the iCub fingertip has reached the edge of the object. The study presented here is also biologically inspired by the tactile exploration performed in animals.
doi:10.2390/biecoll-robotdoc2012-09 fatcat:367h47d4bfh7fofqdd3iy5r3zm

Myocardial Rupture in Acute Myocardial Infarction: Mechanistic Explanation Based on the Ventricular Myocardial Band Hypothesis

Jesús Vargas-Barron, Omar-Yassef Antunez-Montes, Francisco-Javier Roldán, Alberto Aranda-Frausto, Hector González-Pacheco, Ángel Romero-Cardenas, Miguel Zabalgoitia
Revista de investigación clínica  
Torrent-Guasp explains the structure of the ventricular myocardium by means of a helical muscular band. Our primary purpose was to demonstrate the utility of echocardiography in human and porcine hearts in identifying the segments of the myocardial band. The second purpose was to evaluate the relation of the topographic distribution of the myocardial band with some post-myocardial infarction ruptures. Five porcine and one human heart without cardiopathy were dissected and the ventricular
more » ... ial segments were color-coded for illustration and reconstruction purposes. These segments were then correlated to the conventional echocardiographic images. Afterwards in three cases with post-myocardial infarction rupture, a correlation of the topographic location of the rupture with the distribution of the ventricular band was made. The human ventricular band does not show any differences from the porcine band, which confirms the similarities of the four segments; these segments could be identified by echocardiography. In three cases with myocardial rupture, a correlation of the intra-myocardial dissection with the distribution of the ventricular band was observed. Echocardiography is helpful in identifying the myocardial band segments as well as the correlation with the topographic distribution of some myocardial post-infarction ruptures.
pmid:26696336 fatcat:orhlpfezcvgkphyr5xd7xfmxoe

Page 49 of Sociedad Mexicana de Micologia. Boletin de la Sociedad Mexicana de Micologia Vol. Annual, Issue 7 [page]

1913 Sociedad Mexicana de Micologia. Boletin de la Sociedad Mexicana de Micologia  
Alba Nélida Nájera por bal>er pro|>orcionado el material del cual se aislaron las cepas, al doctor Amado González Mendoza por la toma de las fotomicrogralías, así como a la QBP.  ...  Barron, (i. I... The Genera of Hyphoniyreles froni soil. The Williain & \Vilkins t^oin- panv, BaUimore. B< •ssey, E. A., líHiá. Morfolog\ and Taxonomy of Fungí. Hafner Piihlishing ('.unipany.  ... 

Reporte de Actividades realizadas en el CINTEC durante el período del 31 de Agosto de 1994 al 1o. de Septiembre de 1995

1995 POLIBITS Research Journal on Computer Science and Computer Engineering With Applications  
Héctor García Rojas Implementación de un paquete de análisis y 922552 Ricardo Barrón F En proceso procesamiento de imágenes para el microproce- Pablo Manrique R. sador DSP 56001 de Motorola.  ...  Diseño y construcción de los mecanismos 900672 Héctor García Rojas En proceso necesarios para la manipulación de dispositivos Juan C. González R. de montaje de superficie.  ... 
doi:10.17562/pb-15-6 fatcat:pcxp5qbpxrgejhgz5wc74muvge

Page 151 of International Review of Criminal Policy Vol. , Issue 6 [page]

1954 International Review of Criminal Policy  
.: 711 Allegra, Giuliano: 489 Allen, John Edward: 558 Alpuche, Juan Gonzalez A.: 1236 Altavilla, Enrico: 41, 42, 660, 967 American Bar Association.  ...  S.: 104 Badr, Amin: 334 Baker, Harry J.: 789 Ballachey, Warren G.: 947 Banay, Ralph S.: 380, 1060 Bangsgaard, A.: 1143 Barker, Gordon H.: 790 Baroudi, Moustapha: 303 Barrientos Restrepo, Samuel: 182 Barron  ... 
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