Computer Assisted Assessement

Introduction for UG course on TEL

Evaluaci??n de competencias de los estudiantes ante la implantaci??n de cr??ditos ECTS : aplicaci??n de las TIC en evaluaci??n de aprendizajes (Computer-Assisted Assesssment)

Se elabora un proyecto piloto encaminado a la armonizaci??n y convergencia de la ense??anza universitaria en el Espacio Europeo de Educaci??n Superior, mediante el dise??o y aplicaci??n de experiencias de innovaci??n en nuevos sistemas de evaluaci??n de competencias mediante la aplicaci??n de las TIC en la evaluaci??n educativa. Se aplica el dise??o experimental en Educaci??n y en Biom??dicas, para comprobar la eficiencia del uso de un software espec??fico para la evaluaci??n formativa frente a otros sistemas tradicionales. El uso de procesos de evaluaci??n a trav??s de la red, se orientan a resaltar la importancia del feed-back y el efecto que ello tiene en el aprendizaje del estudiante. El proyecto se desarrolla en tres fases. La primera, de recogida de informaci??n, selecci??n de las asignaturas de la aplicaci??n de la experiencia y dise??o de la investigaci??n. La segunda fase, de implementaci??n de la experiencia en dos ??reas de Educaci??n y Biom??dicas, y en una tercera fase, de validaci??n emp??rica de la experiencia a trav??s del an??lisis estad??stico de datos recogidos en la fase pre y postest. Se elaboran pruebas diferentes de evaluaci??n espec??ficas para los distintos objetivos y contenidos de las dos ??reas de estudio.

Adaptive computer assisted assessment of free-text students answers : an approach to automatically generate students' conceptual models.

Las formas de evaluación basadas en el uso de tests no pueden identificar muchos errores conceptuales de los estudiantes. Esta investigación tiene como objetivo facilitar un nuevo procedimiento capaz de generar los modelos conceptuales de los estudiantes de forma automática a partir de respuestas en texto libre.. Este trabajo se organiza en tres apartados. En primer lugar, se procede a la revisión del estado de la cuestión. A continuación se describen el procedimiento para generar automáticamente los modelos conceptuales de los estudiantes y los sistemas que implementan dicho procedimiento. Por último se ofrecen: una explicación de los experimentos realizados y sus resultados, las conclusiones obtenidas y las líneas de trabajo futuro. Además se proporciona información para aplicar el procedimiento en otro idioma y/o área de conocimiento.. Se propone un procedimiento para generar automáticamente modelos conceptuales de cada estudiante y de una clase a partir de las respuestas facilitadas al sistema de evaluación automático y adaptativo. Estos sistemas son la evolución de los actuales de evaluación de respuestas en texto libre, que evalúan respuestas en texto libre automáticamente y de forma adaptada al modelo de cada estudiante..

Experimentación del Computer Managed Instruction en la formación del profesorado de EGB.

Comprobar la idoneidad de las técnicas CMI (Computer Managed Instruction) para la formación en Matemáticas del profesorado de EGB. Realizaron el curso por ordenador 12 profesores de EGB que iban a seguir un curso de actualización en Matemáticas por el método tradicional (de los 28 iniciales). Dividido en 2 fases. En la primera fase se diseñaron y pusieron en marcha los programas de ordenador necesarios para implementar el curso a seguir por el grupo experimental en el computador, y se prepararon los tests a que se sometieron los alumnos antes y después del curso. La segunda fase consiste en la experimentación del curso por computador con alumnos, análisis de los resultados y conclusiones de la investigación. Test previos de conocimientos, uno de respuesta libre y otro de elección de respuesta. Test de Inteligencia general (dominó D-48), batería DAT para medir la capacidad numérica (NA) y de razonamiento (AR). Cuestionarios de personalidad CEP de Pinillos. Conversaciones para detectar la actitud y el interés de los profesores por el curso. Cintas del curso, utilizando el miniordenador IBM 5100. Porcentajes de aciertos y errores por alumnos y por preguntas efectuadas. Se detectaron preguntas poco acertadas por el bajo porcentaje de éxitos. El 80 por ciento de los profesores mantuvo un interés notable a lo largo del curso. La mayoría opinó que el procedimiento era demasiado lento y echaron de menos que el sistema no presentase la respuesta correcta una vez contestada la pregunta por el alumno. Necesidad de reelaborar algunas partes del cuestionario. Un curso como el experimentado encuentra su principal aplicación como un medio adicional puesto a disposición del estudiante, con la finalidad de ayudarle a fijar y repasar los conceptos esenciales de la materia estudiada, sirviéndole, a la vez, de instrumento de diagnóstico de sus propias deficiencias.

Computer-Assisted Language Learning (CALL) and trilingualism in the Basque Country. 'Aprendizaje de lenguas asistido por ordenador (CALL) y triling????smo en el Pa??s Vasco'

Resumen basado en el de la publicaci??n

CAMCR: Computer assisted mixture model analysis for capture-recapture count data

Population size estimation with discrete or nonparametric mixture models is considered, and reliable ways of construction of the nonparametric mixture model estimator are reviewed and set into perspective. Construction of the maximum likelihood estimator of the mixing distribution is done for any number of components up to the global nonparametric maximum likelihood bound using the EM algorithm. In addition, the estimators of Chao and Zelterman are considered with some generalisations of Zelterman’s estimator. All computations are done with CAMCR, a special software developed for population size estimation with mixture models. Several examples and data sets are discussed and the estimators illustrated. Problems using the mixture model-based estimators are highlighted.

COMPUTER assisted technologies to enhance CONCURRENce in building DESIGN

Modern organisms are adapted to a wide variety of habitats and lifestyles. The processes of evolution have led to complex, interdependent, well-designed mechanisms of todays world and this research challenge is to transpose these innovative solutions to resolve problems in the context of architectural design practice, e.g., to relate design by nature with design by human. In a design by human environment, design synthesis can be performed with the use of rapid prototyping techniques that will enable to transform almost instantaneously any 2D design representation into a physical three-dimensional model, through a rapid prototyping printer machine. Rapid prototyping processes add layers of material one on top of another until a complete model is built and an analogy can be established with design by nature where the natural lay down of earth layers shapes the earth surface, a natural process occurring repeatedly over long periods of time. Concurrence in design will particularly benefit from rapid prototyping techniques, as the prime purpose of physical prototyping is to promptly assist iterative design, enabling design participants to work with a three-dimensional hardcopy and use it for the validation of their design-ideas. Concurrent design is a systematic approach aiming to facilitate the simultaneous involvment and commitment of all participants in the building design process, enabling both an effective reduction of time and costs at the design phase and a quality improvement of the design product. This paper presents the results of an exploratory survey investigating both how computer-aided design systems help designers to fully define the shape of their design-ideas and the extent of the application of rapid prototyping technologies coupled with Internet facilities by design practice. The findings suggest that design practitioners recognize that these technologies can greatly enhance concurrence in design, though acknowledging a lack of knowledge in relation to the issue of rapid prototyping.

CAMCR: Computer-Assisted Mixture model analysis for Capture–Recapture count data

Population size estimation with discrete or nonparametric mixture models is considered, and reliable ways of construction of the nonparametric mixture model estimator are reviewed and set into perspective. Construction of the maximum likelihood estimator of the mixing distribution is done for any number of components up to the global nonparametric maximum likelihood bound using the EM algorithm. In addition, the estimators of Chao and Zelterman are considered with some generalisations of Zelterman’s estimator. All computations are done with CAMCR, a special software developed for population size estimation with mixture models. Several examples and data sets are discussed and the estimators illustrated. Problems using the mixture model-based estimators are highlighted.

Computer-Assisted Approach to Structural Elucidation of Lignans

This paper reports an expert system (SISTEMAT) developed for structural determination of diverse chemical classes of natural products, including lignans, based mainly on 13C NMR and 1H NMR data of these compounds. The system is composed of five programs that analyze specific data of a lignan and shows a skeleton probability for the compound. At the end of analyses, the results are grouped, the global probability is computed, and the most probable skeleton is exhibited to the user. SISTEMAT was able to properly predict the skeletons of 80% of the 30 lignans tested, demonstrating its advantage during the structural elucidation course in a short period of time.

Legal LEGO: Model based computer assisted teaching in evidence courses

This paper describes the development of a new approach to the use of ICT for the teaching of courses in the interpretation and evaluation of evidence. It is based on ideas developed for the teaching of science to school children, in particular the importance of models and qualitative reasoning skills. In the first part, we make an analysis of the basis of current research into “evidence scholarship” and the demands such a system would have to meet. In the second part, we introduce the details of such a system that we developed initially to assist police in the interpretation of evidence.

Computer-assisted analysis of cell proliferation markers in oral lesions

Abnormalities in any component of the cell cycle regulatory machine may result in oral. cancer, and markers of cell proliferation have been used to determine the prognosis of tumor progression. The aim of this study was to determine whether silver-stained nucleolar organizer region (AgNOR) and Ki-67 measurements could improve the assessment of growth rates in oral lesions. Eighty-three oral biopsies were studied, 20 of which were classified as fibrous inflammatory hyperplasia (FIH), 40 as leukoplakia (LKP) and 23 as oral. squamous cell carcinoma (OSCC). Within the LKP group, 22 out of 29 biopsies were diagnosed as non-dysplastic leukoplakia (LK) and 18 as dysplastic teukoptakia (DLK), presenting discrete, moderate and severe dysplasia. Ki-67 immunotabeting of the lesions increased steadily in the following order: FIH, DLK, LK and OSCC, indicating that Ki-67 is a good marker for predicting the protiferative fraction among benign, premalignant and malignant oral lesions. The median values of AgNOR parameters indicate that the morphometric index gives better results regarding the proliferative rate than the numerical one. A series of linear regressions between AgNOR parameters and Ki-67 showed positive associations. We conclude that a combination of Ki-67 and morphometric AgNOR analyses could be used as an aid in the determination of the protiferative status of oral epithelial. cells in oral cancer. (C) 2007 Elsevier GmbH. All rights reserved.