Search results for "Feedback"
showing 10 items of 538 documents
daptive Backstepping Control of Nonlinear Hydraulic-Mechanical System Including Valve Dynamics
2010
Published version of an article from the journal: Modeling Identification and Control. Also available from publisher: http://dx.doi.org/10.4173/mic.2010.1.3 The main contribution of the paper is the development of an adaptive backstepping controller for a nonlinear hydraulic-mechanical system considering valve dynamics. The paper also compares the performance of two variants of an adaptive backstepping tracking controller with a simple PI controller. The results show that the backstepping controller considering valve dynamics achieves significantly better tracking performance than the PI controller, while handling uncertain parameters related to internal leakage, friction, the orifice equat…
Corrective feedback and learner uptake in an EFL classroom
2007
Oral errors, corrective feedback and learner uptake in an EFL setting
2012
Oppilaiden kielelliset virheet ovat luonnollinen osa luokkahuonediskurssia vieraiden kielten oppitunneilla. Opettaja antaa usein korjaavaa palautetta (corrective feedback) oppilaidensa virheisiin, ja parhaassa tapauksessa palaute auttaa oppilaita oppimaan virheistään. Tutkielma pyrkii kartoittamaan erilaisia opettajien käyttämiä keinoja, kun he antavat korjaavaa palautetta oppilaiden puheessa tekemiin virheisiin. Tutkielmassa tarkastellaan myös oppilaiden tapaa reagoida palautteeseen (uptake) ja sitä, onnistuvatko oppilaat korjaamaan alkuperäiset virheensä (repair). Tutkimuksen kohteena on kaksi lukiotason luokkaa ja heidän opettajansa. Aineisto koostuu kahdeksasta englannin tunnista (yhtee…
Students' perceptions about the use of oral feedback in EFL classrooms
2016
Tämän tutkimuksen tarkoituksena oli selvittää lukiossa opiskelevien oppilaiden näkökulmia ja mielipiteitä yleisesti palautteen antoon liittyen. Pääpaino oli suullisessa palautteessa, ja tutkimus pyrki selvittämään, milloin, miten ja kuinka paljon suullista palautetta annetaan englannin kielen tunneilla lukiossa, sekä millaista suullista palautetta lukiolaiset haluaisivat saada, ja mistä kielen osa-alueista. Palautteen anto on tärkeä osa oppimista ja opettamista. Palautteen antoa luokkahuoneessa on tutkittu aiemmin, ja usein tutkimukset ovat keskittyneet esimerkiksi korjaavaan palautteeseen ja sen eri muotoihin niin oppilaan kuin opettajan kannalta, tai kirjalliseen palautteeseen. Suullista …
Efecto de la retroalimentación orientada al acierto: un caso de estudio de analítica del aprendizaje
2020
La Analítica de datos en Educación se puede definir como el área encargada de medir, recopilar y analizar conjuntos de datos obtenidos mediante el uso de entornos tecnológicos de aprendizaje o plataformas de aprendizaje asistido por computadora que permiten registrar las interacciones o trazas digitales del estudiantado. En particular, el estudio de la traza digital registrada puede contribuir positivamente en la comprensión de las estrategias seguidas por el estudiantado al resolver una tarea. En este trabajo se presenta un caso de estudio exploratorio en el que analiza el posible impacto del uso de la retroalimentación orientada al acierto mediante el uso de un entorno tecnológico con el …
Analysis of the TK enzyme complex induced by HSV types 1 and 2 by means of isoelectric focusing and polyacrylamide gel electrophoresis.
1982
Recently we have described that the Herpes simplex virus (HSV)-induced thymidine kinase (TK) induces AMP- and ADP-dThd-5'-phosphotransferase activities. We now demonstrate the heterogeneity of the described activities in isoelectric focusing experiments and polyacrylamide gel electrophoresis. A TK--mutant of HSV type 1 fails to induce these activities. The activities of the type 1 enzyme complex was neutralized by an anti-HSV-serum. The TK-enzyme complex expressed in LTK--cells transformed to a TK+-phenotype by sheared HSV-1 DNA was compared with the wild type TK complex in isoelectric focusing experiments. Additionally we demonstrate that the HSV type 1 enzyme complex has thymidylate kinas…
An equilibrium point regularization for the Chen system
2006
This paper addresses the control of the chaotic Chen system via a feedback technique. We first present a nonlinear feedback controller which drives the trajectories of the Chen system to a given point for any initial conditions. Then, we design a linear feedback controller which still assures the global stability of the Chen system. We moreover achieve the tracking of a reference signal. Numerical simulations are provided to show the effectiveness of the developed controllers.
'In search of assessment feedback' : student view on the Finnish and British higher education
2007
Utilidad de un nuevo sistema de cronometraje para proporcionar feedback inmediato a los nadadores
2007
El presente documento tiene dos objetivos, en primer lugar, describir un nuevo sistema de cronometraje que proporciona feedback en tiempo real y sin interferir en la ejecución del nadador y, en segundo lugar, comprobar su utilidad. El sistema consiste en una pantalla de leds, resistente al agua e instalada en el fondo de la piscina, conectada a una Unidad Central mediante una plataforma de contacto colocada en la pared donde se realiza el viraje. La pantalla de leds informa al nadador de los tiempos y número de vueltas e, incluso, puede presentar texto (consignas) escrito por el entrenador. Este sistema se puede conectar a un PC o una PDA, permitiendo registrar los tiempos para su posterior…
The Role of Feedback on Learning: Evidence through Ex-Gaussian Components
2015
Abstract In the performance of any task if a subject does not understand the instructions given they will hardly be able to fulfil the requested goals. The aim of this work was to evaluate the role of feedback through a stroop task for University students. Two experiments were conducted where participants had to perform, into a counterbalanced design, stroop blocks with and without feedback. The classical ANOVA and a fit of the reaction times (RT) into an ex-Gaussian distribution function were carried out. RTs were much lower in feedback blocks than controls. The differences did not reach the statistical significance, however, the parameters often related in the literature to attention in a…