{"id":96693,"date":"2018-03-11T10:16:57","date_gmt":"2018-03-11T10:16:57","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/ratchets-brownianas-retroalimentadas-e-informacion\/"},"modified":"2018-03-11T10:16:57","modified_gmt":"2018-03-11T10:16:57","slug":"ratchets-brownianas-retroalimentadas-e-informacion","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/ratchets-brownianas-retroalimentadas-e-informacion\/","title":{"rendered":"Ratchets brownianas retroalimentadas e informaci\u00f3n."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Manuel Feito Guzman <\/strong><\/h2>\n<p>Las ratchets o motores brownianos pueden verse como controladores que act\u00faan sobre sistemas estoc\u00e1sticos con el objetivo de inducir movimiento neto a trav\u00e9s de la rectificaci\u00f3n de las fluctuaciones. En la presente tesis investigamos ratchets de ciclo  cerrado o retroalimentadas, que son aquellas ratchets cuyo mecanismo de rectificaci\u00f3n depende expl\u00edcitamente del estado del sistema. Hemos analizado la din\u00e1mica y el rendimiento de ratchets con control retroalimentado centr\u00e1ndonos en lo que las cara cteriza, a saber, el uso de la informaci\u00f3n sobre el estado del sistema. Hemos mostrado que este uso de la informaci\u00f3n permite a las ratchets de ciclo cerrado incrementar el rendimiento sobre sus an\u00e1logas de ciclo abierto. Adem\u00e1s, la investigaci\u00f3n sob re los efectos del retardo temporal en la retroalimentaci\u00f3n nos revela una din\u00e1mica rica que exhibe multiestabilidad e inversiones de corriente. Estos estudios que hemos hecho sobre los efectos del retardo temporal junto con los efectos de ruidos en el control retroalimentado nos muestran la viabilidad de realizaciones experimentales de las ratchets retroalimentadas. Tambi\u00e9n hemos encontrado que la combinaci\u00f3n de una fuerza oscilante de media cero con el mecanismo de control conduce al m\u00e1ximo fl ujo que se ha obtenido en una ratchet sin un sesgo a priori. Por otra parte, en esta tesis hemos completado la termodin\u00e1mica de sistemas generales con control retroalimentado calculando la reducci\u00f3n de entrop\u00eda cuando el sistema es operado repetidame nte por el controlador. Este era el ingrediente que faltaba para establecer la termodin\u00e1mica de los sitemas con control retroalimentado, y en particular de los demonios de maxwell. Finalmente, presentamos algunas cuestiones todav\u00eda abiertas y futuras  perspectivas en el emergente campo de las ratchets retroalimentadas.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Ratchets brownianas retroalimentadas e informaci\u00f3n.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Ratchets brownianas retroalimentadas e informaci\u00f3n. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Manuel Feito Guzman <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 22\/10\/2009<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Francisco Javier Cao Garcia<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Luis V\u00e1zquez mart\u00ednez <\/li>\n<li>Jos\u00e9 ricardo Arias gonz\u00e1lez de la aleja (vocal)<\/li>\n<li>Rafael Garc\u00eda molina (vocal)<\/li>\n<li> Baltan\u00e1s illanes Jos\u00e9 pablo (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Manuel Feito Guzman Las ratchets o motores brownianos pueden verse como controladores que act\u00faan sobre sistemas estoc\u00e1sticos [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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