Dr. Enrique Pazos https://ecfm.usac.edu.gt/ Mas sobre esta persona es Modelos climáticos computacionales y proyecciones de calentamiento global para Centroamérica https://ecfm.usac.edu.gt/node/799 <div data-history-node-id="799" class="view-mode-rss ds-2col-stacked clearfix"> <div class="group-header"> <div class="field field--name-node-title field--type-ds field--label-hidden field__item"><h2> Modelos climáticos computacionales y proyecciones de calentamiento global para Centroamérica </h2> </div> <div class="field field--name-field-tipo-evento field--type-list-string field--label-above"> <div class="field__label">Tipo</div> <div class="field__items"> <div class="field__item">Seminario</div> </div> </div> </div> <div class="group-left"> <div class="field field--name-field-logo-evento field--type-image field--label-hidden field__item"> <a href="https://ecfm.usac.edu.gt/sites/default/files/2024-04/Invitacion%2003%20Abril.jpg"><img src="/sites/default/files/styles/bigeventos/public/2024-04/Invitacion%2003%20Abril.jpg?itok=Xi0c8qF2" width="500" height="291" alt="Modelos climáticos computacionales y proyecciones de calentamiento global para Centroamérica" typeof="foaf:Image" class="image-style-bigeventos" /> </a> </div> </div> <div class="group-right"> <div class="field field--name-field-fecha-evento field--type-datetime field--label-above"> <div class="field__label">Fecha de Inicio</div> <div class="field__item"><time datetime="2024-04-03T15:50:00Z" class="datetime">Mié, 03/04/2024 - 09:50</time> </div> </div> <div class="clearfix text-formatted field field--name-field-lugar-del-evento field--type-text-long field--label-above"> <div class="field__label">Lugar del Evento</div> <div class="field__item"><div class="tex2jax_process"><p>Salón 111</p> <p><span>Primer nivel edificio T-1</span></p> <p><span>Ciudad Universitaria, USAC. Zona 12</span></p> <p> </p></div></div> </div> <div class="field field--name-field-expositores field--type-entity-reference field--label-above"> <div class="field__label">Expositores</div> <div class="field__items"> <div class="field__item"><a href="/taxonomy/term/18" hreflang="es">Dr. Enrique Pazos</a></div> </div> </div> <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-above"> <div class="field__label">Descripción</div> <div class="field__item"><div class="tex2jax_process"><p><span>Usando una caracterización de Series-B, derivamos las condiciones explícitas sobre los coeficientes de un método de Runge-Kutta que aseguran la conservación de energía hasta un orden dado. Proporcionamos ejemplos de métodos explícitos pseudo-conservadores de energía hasta el orden seis, y los aplicamos a sistemas hamiltonianos de ecuaciones diferenciales.</span></p> <p> </p></div></div> </div> </div> <div class="group-footer"> <div class="field field--name-field-tags field--type-entity-reference field--label-above"> <div class="field__label">Temas Relevates</div> <div class="field__items"> <div class="field__item"><a href="/taxonomy/term/1080" hreflang="es">Modelos climáticos computacionales</a></div> <div class="field__item"><a href="/taxonomy/term/1081" hreflang="es">Proyecciones de calentamiento global</a></div> </div> </div> </div> </div> Tue, 02 Apr 2024 15:28:57 +0000 roes 799 at https://ecfm.usac.edu.gt Influence of driver behavior in the emergence of traffic gridlocks https://ecfm.usac.edu.gt/node/677 <div data-history-node-id="677" class="node node--type-publicaciones node--view-mode-rss ds-2col-stacked clearfix"> <div class="group-header"> <div class="field field--name-node-title field--type-ds field--label-hidden field__item"><h2> Influence of driver behavior in the emergence of traffic gridlocks </h2> </div> </div> <div class="group-left"> <div class="field field--name-field-numero-ecfm field--type-string field--label-above"> <div class="field__label">Número ECFM</div> <div class="field__item">IFM-2021-05</div> </div> <div class="field field--name-field-ano field--type-datetime field--label-above"> <div class="field__label">Fecha de Publicación</div> <div class="field__item"><time datetime="2021-04-15T12:00:00Z" class="datetime">Jue, 15/04/2021 - 12:00</time> </div> </div> </div> <div class="group-right"> <div class="field field--name-field-autores field--type-entity-reference field--label-inline clearfix"> <div class="field__label">Autores</div> <div class="field__items"> <div class="field__item"><a href="/taxonomy/term/18" hreflang="es">Dr. Enrique Pazos</a></div> </div> </div> <div class="field field--name-field-enlace-a-publicacion field--type-link field--label-inline clearfix"> <div class="field__label">Enlace a arXiv</div> <div class="field__item"><a href="https://arxiv.org/abs/2009.13722">arXiv:2009.13722 [physics.soc-ph]</a></div> </div> <div class="field field--name-field-revista field--type-link field--label-inline clearfix"> <div class="field__label">Revistas</div> <div class="field__items"> <div class="field__item"><a href="https://doi.org/10.1142/S0129183121500510">International Journal of Modern Physics C Vol. 32, No. 04, 2150051 (2021)</a></div> </div> </div> </div> <div class="group-footer"> </div> </div> Thu, 15 Apr 2021 21:44:11 +0000 ramirez 677 at https://ecfm.usac.edu.gt The Mid-Summer Drought spatial variability over Mesoamerica https://ecfm.usac.edu.gt/node/650 <div data-history-node-id="650" class="node node--type-publicaciones node--view-mode-rss ds-2col-stacked clearfix"> <div class="group-header"> <div class="field field--name-node-title field--type-ds field--label-hidden field__item"><h2> The Mid-Summer Drought spatial variability over Mesoamerica </h2> </div> </div> <div class="group-left"> <div class="field field--name-field-numero-ecfm field--type-string field--label-above"> <div class="field__label">Número ECFM</div> <div class="field__item">IFM-2020-04</div> </div> <div class="field field--name-field-ano field--type-datetime field--label-above"> <div class="field__label">Fecha de Publicación</div> <div class="field__item"><time datetime="2020-05-11T12:00:00Z" class="datetime">Lun, 11/05/2020 - 12:00</time> </div> </div> </div> <div class="group-right"> <div class="field field--name-field-autores field--type-entity-reference field--label-inline clearfix"> <div class="field__label">Autores</div> <div class="field__items"> <div class="field__item"><a href="/taxonomy/term/18" hreflang="es">Dr. Enrique Pazos</a></div> <div class="field__item"><a href="/taxonomy/term/824" hreflang="es">MSc. Lilian C. García-Oliva</a></div> </div> </div> <div class="field field--name-field-enlace-a-publicacion field--type-link field--label-inline clearfix"> <div class="field__label">Enlace a arXiv</div> <div class="field__item"><a href="https://www.revistascca.unam.mx/atm/index.php/atm/article/view/52790">Atmósfera, [S.l.], may 2020. ISSN 2395-8812</a></div> </div> <div class="field field--name-field-revista field--type-link field--label-inline clearfix"> <div class="field__label">Revistas</div> <div class="field__items"> <div class="field__item"><a href="https://www.revistascca.unam.mx/atm/index.php/atm/article/view/52790">Atmósfera, [S.l.], may 2020. ISSN 2395-8812</a></div> </div> </div> </div> <div class="group-footer"> </div> </div> Wed, 25 Nov 2020 18:37:47 +0000 ramirez 650 at https://ecfm.usac.edu.gt CONSTANTES FÍSICAS EN EL SISTEMA INTERNACIONAL DE UNIDADES https://ecfm.usac.edu.gt/node/557 <div data-history-node-id="557" class="view-mode-rss ds-2col-stacked clearfix"> <div class="group-header"> <div class="field field--name-node-title field--type-ds field--label-hidden field__item"><h2> CONSTANTES FÍSICAS EN EL SISTEMA INTERNACIONAL DE UNIDADES </h2> </div> <div class="field field--name-field-tipo-evento field--type-list-string field--label-above"> <div class="field__label">Tipo</div> <div class="field__items"> <div class="field__item">Seminario</div> </div> </div> </div> <div class="group-left"> <div class="field field--name-field-logo-evento field--type-image field--label-hidden field__item"> <a href="https://ecfm.usac.edu.gt/sites/default/files/2019-09/Seminario%2011%20septiembre.jpg"><img src="/sites/default/files/styles/bigeventos/public/2019-09/Seminario%2011%20septiembre.jpg?itok=hv_OkcAo" width="500" height="334" alt="CONSTANTES FÍSICAS EN EL SISTEMA INTERNACIONAL DE UNIDADES" typeof="foaf:Image" class="image-style-bigeventos" /> </a> </div> </div> <div class="group-right"> <div class="field field--name-field-fecha-evento field--type-datetime field--label-above"> <div class="field__label">Fecha de Inicio</div> <div class="field__item"><time datetime="2019-09-11T16:00:00Z" class="datetime">Mié, 11/09/2019 - 10:00</time> </div> </div> <div class="clearfix text-formatted field field--name-field-lugar-del-evento field--type-text-long field--label-above"> <div class="field__label">Lugar del Evento</div> <div class="field__item"><div class="tex2jax_process"><p><span>Aula virtual</span></p> <p><span>Segundo nivel edificio T-1</span></p> <p><span>Ciudad Universitaria, USAC. Zona 12</span></p> <p> </p></div></div> </div> <div class="field field--name-field-expositores field--type-entity-reference field--label-above"> <div class="field__label">Expositores</div> <div class="field__items"> <div class="field__item"><a href="/taxonomy/term/18" hreflang="es">Dr. Enrique Pazos</a></div> </div> </div> <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-above"> <div class="field__label">Descripción</div> <div class="field__item"><p>Los patrones de medición que utiliza el Sistema Internacional fueron<br /> establecidos después de la Revolución Francesa. Sin embargo, los<br /> objetos utilizados como patrón son susceptibles a cambios en el<br /> tiempo. La más reciente formulación de los patrones de medida se ha<br /> realizado utilizando constantes físicas. En esta charla veremos cómo<br /> se utilizan las constantes físicas para establecer las unidades<br /> patrón, en especial la unidad de masa, cuya más reciente definición<br /> fue adoptada en el presente año.</p> </div> </div> </div> <div class="group-footer"> <div class="field field--name-field-tags field--type-entity-reference field--label-above"> <div class="field__label">Temas Relevates</div> <div class="field__items"> <div class="field__item"><a href="/taxonomy/term/654" hreflang="es">CONSTANTES FÍSICAS</a></div> <div class="field__item"><a href="/taxonomy/term/655" hreflang="es">SISTEMA</a></div> <div class="field__item"><a href="/taxonomy/term/656" hreflang="es">INTERNACIONAL UNIDADES</a></div> </div> </div> </div> </div> Fri, 06 Sep 2019 18:39:16 +0000 roes 557 at https://ecfm.usac.edu.gt SIMULACIÓN COMPUTACIONAL, DESARROLLO TEÓRICO Y COMPARACIÓN EXPERIMENTAL DE UN PÉNDULO ELÁSTICO https://ecfm.usac.edu.gt/node/534 <div data-history-node-id="534" class="node node--type-tesis node--view-mode-rss ds-2col-stacked-fluid clearfix"> <header class="Titulo group-header"> <div class="field field--name-node-title field--type-ds field--label-hidden field__item"><TituloTesis class="TituloTesis"> SIMULACIÓN COMPUTACIONAL, DESARROLLO TEÓRICO Y COMPARACIÓN EXPERIMENTAL DE UN PÉNDULO ELÁSTICO </TituloTesis> </div> </header> <div class="group-left"> <div class="field field--name-field-autor field--type-entity-reference field--label-inline clearfix"> <div class="field__label">Autor</div> <div class="field__item"><a href="/taxonomy/term/620" hreflang="es">Lorena Alejandra Contreras Lemus</a></div> </div> <div class="field field--name-field-carne field--type-integer field--label-inline clearfix"> <div class="field__label">Carné</div> <div class="field__item">201313851</div> </div> <div class="field field--name-field-asesor field--type-entity-reference field--label-inline clearfix"> <div class="field__label">Asesor</div> <div class="field__items"> <div class="field__item"><a href="/taxonomy/term/18" hreflang="es">Dr. Enrique Pazos</a></div> </div> </div> </div> <div class="group-right"> <div class="field field--name-field-tesis field--type-file field--label-hidden field__item"> <span class="file file--mime-application-pdf file--application-pdf"> <a href="https://ecfm.usac.edu.gt/sites/default/files/2019-06/TESIS-%20Lorena.pdf" type="application/pdf; length=5330389" title="TESIS- Lorena.pdf">SIMULACIÓN COMPUTACIONAL, DESARROLLO TEÓRICO Y COMPARACIÓN EXPERIMENTAL DE UN PÉNDULO ELÁSTICO</a></span> </div> <div class="field field--name-field-ano-de-graduacion field--type-integer field--label-above"> <div class="field__label">Año de Graduación</div> <div class="field__item">2019</div> </div> </div> <div class="group-footer"> </div> </div> Thu, 27 Jun 2019 17:43:34 +0000 Norma 534 at https://ecfm.usac.edu.gt USO DE RUTAS DE CONCENTRACIÓN REPRESENTATIVAS EN UN MODELO CLIMÁTICO REGIONAL PARA ANÁLISIS DE CALENTAMIENTO GLOBAL https://ecfm.usac.edu.gt/node/526 <div data-history-node-id="526" class="node node--type-tesis node--view-mode-rss ds-2col-stacked-fluid clearfix"> <header class="Titulo group-header"> <div class="field field--name-node-title field--type-ds field--label-hidden field__item"><TituloTesis class="TituloTesis"> USO DE RUTAS DE CONCENTRACIÓN REPRESENTATIVAS EN UN MODELO CLIMÁTICO REGIONAL PARA ANÁLISIS DE CALENTAMIENTO GLOBAL </TituloTesis> </div> </header> <div class="group-left"> <div class="field field--name-field-autor field--type-entity-reference field--label-inline clearfix"> <div class="field__label">Autor</div> <div class="field__item"><a href="/taxonomy/term/610" hreflang="es">Willson Wyller García Morales</a></div> </div> <div class="field field--name-field-carne field--type-integer field--label-inline clearfix"> <div class="field__label">Carné</div> <div class="field__item">200714950</div> </div> <div class="field field--name-field-asesor field--type-entity-reference field--label-inline clearfix"> <div class="field__label">Asesor</div> <div class="field__items"> <div class="field__item"><a href="/taxonomy/term/18" hreflang="es">Dr. Enrique Pazos</a></div> </div> </div> </div> <div class="group-right"> <div class="field field--name-field-tesis field--type-file field--label-hidden field__item"> <span class="file file--mime-application-pdf file--application-pdf"> <a href="https://ecfm.usac.edu.gt/sites/default/files/2019-06/TESIS%20FINAL.pdf" type="application/pdf; length=4799055" title="TESIS FINAL.pdf">USO DE RUTAS DE CONCENTRACIÓN REPRESENTATIVAS EN UN MODELO CLIMÁTICO REGIONAL PARA ANÁLISIS DE CALENTAMIENTO GLOBAL</a></span> </div> <div class="field field--name-field-ano-de-graduacion field--type-integer field--label-above"> <div class="field__label">Año de Graduación</div> <div class="field__item">2019</div> </div> </div> <div class="group-footer"> </div> </div> Thu, 13 Jun 2019 15:37:02 +0000 Norma 526 at https://ecfm.usac.edu.gt CARACTERIZACIÓN DE LA CANÍCULA EN LA REGIÓN GUATEMALTECA USANDO EL MODELO CLIMÁTICO REGIONAL REGCM https://ecfm.usac.edu.gt/node/453 <div data-history-node-id="453" class="node node--type-tesis node--view-mode-rss ds-2col-stacked-fluid clearfix"> <header class="Titulo group-header"> <div class="field field--name-node-title field--type-ds field--label-hidden field__item"><TituloTesis class="TituloTesis"> CARACTERIZACIÓN DE LA CANÍCULA EN LA REGIÓN GUATEMALTECA USANDO EL MODELO CLIMÁTICO REGIONAL REGCM </TituloTesis> </div> </header> <div class="group-left"> <div class="field field--name-field-autor field--type-entity-reference field--label-inline clearfix"> <div class="field__label">Autor</div> <div class="field__item"><a href="/taxonomy/term/485" hreflang="es">Lilian Carolina García Oliva</a></div> </div> <div class="field field--name-field-carne field--type-integer field--label-inline clearfix"> <div class="field__label">Carné</div> <div class="field__item">201114746</div> </div> <div class="field field--name-field-asesor field--type-entity-reference field--label-inline clearfix"> <div class="field__label">Asesor</div> <div class="field__items"> <div class="field__item"><a href="/taxonomy/term/18" hreflang="es">Dr. Enrique Pazos</a></div> </div> </div> </div> <div class="group-right"> <div class="field field--name-field-tesis field--type-file field--label-hidden field__item"> <span class="file file--mime-application-pdf file--application-pdf"> <a href="https://ecfm.usac.edu.gt/sites/default/files/2018-11/Tesis%20Lilian%20Garc%C3%ADa.pdf" type="application/pdf; length=15625428" title="Tesis Lilian García.pdf">CARACTERIZACIÓN DE LA CANÍCULA EN LA REGIÓN GUATEMALTECA USANDO EL MODELO CLIMÁTICO REGIONAL REGCM</a></span> </div> <div class="field field--name-field-ano-de-graduacion field--type-integer field--label-above"> <div class="field__label">Año de Graduación</div> <div class="field__item">2018</div> </div> </div> <div class="group-footer"> </div> </div> Tue, 27 Nov 2018 16:47:12 +0000 ederg 453 at https://ecfm.usac.edu.gt Simulación del flujo de viento sobre el territorio de Guatemala utilizando un modelo climático regional https://ecfm.usac.edu.gt/node/372 <div data-history-node-id="372" class="node node--type-publicaciones node--view-mode-rss ds-2col-stacked clearfix"> <div class="group-header"> <div class="field field--name-node-title field--type-ds field--label-hidden field__item"><h2> Simulación del flujo de viento sobre el territorio de Guatemala utilizando un modelo climático regional </h2> </div> </div> <div class="group-left"> <div class="field field--name-field-numero-ecfm field--type-string field--label-above"> <div class="field__label">Número ECFM</div> <div class="field__item">IFM-2017-02</div> </div> <div class="field field--name-field-ano field--type-datetime field--label-above"> <div class="field__label">Fecha de Publicación</div> <div class="field__item"><time datetime="2018-08-06T12:00:00Z" class="datetime">Lun, 06/08/2018 - 12:00</time> </div> </div> </div> <div class="group-right"> <div class="field field--name-field-autores field--type-entity-reference field--label-inline clearfix"> <div class="field__label">Autores</div> <div class="field__items"> <div class="field__item"><a href="/taxonomy/term/18" hreflang="es">Dr. Enrique Pazos</a></div> </div> </div> <div class="field field--name-field-enlace-a-publicacion field--type-link field--label-inline clearfix"> <div class="field__label">Enlace a arXiv</div> <div class="field__item"><a href="https://arxiv.org/abs/1708.06893">arXiv:1708.06893 [physics.ao-ph]</a></div> </div> <div class="field field--name-field-revista field--type-link field--label-inline clearfix"> <div class="field__label">Revistas</div> <div class="field__items"> <div class="field__item"><a href="https://digi.usac.edu.gt/ojsrevistas/index.php/cytes/article/view/409">Ciencia, Tecnología y Salud, Vol. 5, No. 2, 2018</a></div> </div> </div> </div> <div class="group-footer"> </div> </div> Mon, 29 Jan 2018 16:00:32 +0000 ramirez 372 at https://ecfm.usac.edu.gt SOLUCIÓN NUMÉRICA DE LA DINÁMICA RELATIVISTA DE UN SISTEMA DE N CUERPOS UTILIZANDO LAS ECUACIONES DE EINSTEIN-INFELD-HOFFMANN https://ecfm.usac.edu.gt/node/348 <div data-history-node-id="348" class="node node--type-tesis node--view-mode-rss ds-2col-stacked-fluid clearfix"> <header class="Titulo group-header"> <div class="field field--name-node-title field--type-ds field--label-hidden field__item"><TituloTesis class="TituloTesis"> SOLUCIÓN NUMÉRICA DE LA DINÁMICA RELATIVISTA DE UN SISTEMA DE N CUERPOS UTILIZANDO LAS ECUACIONES DE EINSTEIN-INFELD-HOFFMANN </TituloTesis> </div> </header> <div class="group-left"> <div class="field field--name-field-autor field--type-entity-reference field--label-inline clearfix"> <div class="field__label">Autor</div> <div class="field__item"><a href="/taxonomy/term/337" hreflang="es">Brayan Lemus</a></div> </div> <div class="field field--name-field-carne field--type-integer field--label-inline clearfix"> <div class="field__label">Carné</div> <div class="field__item">200817916</div> </div> <div class="field field--name-field-asesor field--type-entity-reference field--label-inline clearfix"> <div class="field__label">Asesor</div> <div class="field__items"> <div class="field__item"><a href="/taxonomy/term/18" hreflang="es">Dr. Enrique Pazos</a></div> </div> </div> </div> <div class="group-right"> <div class="field field--name-field-tesis field--type-file field--label-hidden field__item"> <span class="file file--mime-application-pdf file--application-pdf"> <a href="https://ecfm.usac.edu.gt/sites/default/files/2017-10/BrayanLemus-200817916_0.pdf" type="application/pdf; length=3920085" title="BrayanLemus-200817916.pdf">SOLUCIÓN NUMÉRICA DE LA DINÁMICA RELATIVISTA DE UN SISTEMA DE N CUERPOS UTILIZANDO LAS ECUACIONES DE EINSTEIN-INFELD-HOFFMANN</a></span> </div> <div class="field field--name-field-ano-de-graduacion field--type-integer field--label-above"> <div class="field__label">Año de Graduación</div> <div class="field__item">2017</div> </div> </div> <div class="group-footer"> </div> </div> Tue, 31 Oct 2017 15:21:46 +0000 brayest3 348 at https://ecfm.usac.edu.gt Un modelo de tráfico urbano utilizando lo más sencillo de la física https://ecfm.usac.edu.gt/node/346 <div data-history-node-id="346" class="view-mode-rss ds-2col-stacked clearfix"> <div class="group-header"> <div class="field field--name-node-title field--type-ds field--label-hidden field__item"><h2> Un modelo de tráfico urbano utilizando lo más sencillo de la física </h2> </div> <div class="field field--name-field-tipo-evento field--type-list-string field--label-above"> <div class="field__label">Tipo</div> <div class="field__items"> <div class="field__item">Seminario</div> </div> </div> </div> <div class="group-left"> <div class="field field--name-field-logo-evento field--type-image field--label-hidden field__item"> <a href="https://ecfm.usac.edu.gt/sites/default/files/2017-10/transito_guatemala.jpg"><img src="/sites/default/files/styles/bigeventos/public/2017-10/transito_guatemala.jpg?itok=QeOs74-Q" width="500" height="334" alt="traffic" typeof="foaf:Image" class="image-style-bigeventos" /> </a> </div> </div> <div class="group-right"> <div class="field field--name-field-fecha-evento field--type-datetime field--label-above"> <div class="field__label">Fecha de Inicio</div> <div class="field__item"><time datetime="2017-11-02T16:00:00Z" class="datetime">Jue, 02/11/2017 - 10:00</time> </div> </div> <div class="clearfix text-formatted field field--name-field-lugar-del-evento field--type-text-long field--label-above"> <div class="field__label">Lugar del Evento</div> <div class="field__item"><div class="tex2jax_process"><p><span>Aula virtual</span></p> <p><span>Segundo nivel edificio T-1</span></p> <p><span>Ciudad Universitaria, USAC. Zona 12</span></p> <p> </p></div></div> </div> <div class="field field--name-field-expositores field--type-entity-reference field--label-above"> <div class="field__label">Expositores</div> <div class="field__items"> <div class="field__item"><a href="/taxonomy/term/18" hreflang="es">Dr. Enrique Pazos</a></div> </div> </div> <div class="field field--name-field-posicionevento field--type-string field--label-hidden field__item">ECFM-USAC</div> <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-above"> <div class="field__label">Descripción</div> <div class="field__item"><div class="tex2jax_process"><p>Un modelo de tráfico urbano utilizando lo más sencillo de la física</p></div></div> </div> </div> <div class="group-footer"> <div class="field field--name-field-tags field--type-entity-reference field--label-above"> <div class="field__label">Temas Relevates</div> <div class="field__items"> <div class="field__item"><a href="/taxonomy/term/352" hreflang="es">Trafico</a></div> </div> </div> </div> </div> Tue, 31 Oct 2017 14:53:49 +0000 brayest3 346 at https://ecfm.usac.edu.gt