Search results for "Omou"
showing 10 items of 195 documents
Semantic Analysis of the Driving Environment in Urban Scenarios
2021
Understanding urban scenes require recognizing the semantic constituents of a scene and the complex interactions between them. In this work, we explore and provide effective representations for understanding urban scenes based on in situ perception, which can be helpful for planning and decision-making in various complex urban environments and under a variety of environmental conditions. We first present a taxonomy of deep learning methods in the area of semantic segmentation, the most studied topic in the literature for understanding urban driving scenes. The methods are categorized based on their architectural structure and further elaborated with a discussion of their advantages, possibl…
Funcionamiento diferencial del ítem de la evaluación internacional PISA. Detección y comprensión
2014
Este trabajo analiza el funcionamiento diferencial del ítem (FDI) de la prueba de comprensión lectora de la evaluación PISA2000 entre la muestras del Reino Unido y España. Se estudian los ítems liberados con el fin de aunar las fases de detección del FDI con la comprensión de sus causas. En la fase de detección se comparan los resultados de los procedimientos Mantel-Haenszel, Regresión Logística y Medias Estandarizadas en sus versiones para ítems dicotómicos y politómicos. Los resultados muestran que dos ítems presentan funcionamiento diferencial aunque el estudio post-hoc llevado a cabo sobre su contenido no ha podido precisar sus causas.
Cores for parabolic operators with unbounded coefficients
2009
Abstract Let A = ∑ i , j = 1 N q i j ( s , x ) D i j + ∑ i = 1 N b i ( s , x ) D i be a family of elliptic differential operators with unbounded coefficients defined in R N + 1 . In [M. Kunze, L. Lorenzi, A. Lunardi, Nonautonomous Kolmogorov parabolic equations with unbounded coefficients, Trans. Amer. Math. Soc., in press], under suitable assumptions, it has been proved that the operator G : = A − D s generates a semigroup of positive contractions ( T p ( t ) ) in L p ( R N + 1 , ν ) for every 1 ⩽ p + ∞ , where ν is an infinitesimally invariant measure of ( T p ( t ) ) . Here, under some additional conditions on the growth of the coefficients of A , which cover also some growths with an ex…
Communicative Language Skills Improvement Programme. (CELSIP) Vol.4
2020
[-] The digital revolution of the recent years has led to new ways of learning through combining innovative and traditional methods. In order to engage our students in this new methods, we have designed a project called “Communicative English Language Skills Improvement Program” (CELSIP) so our learners will be able to achieve a higher communicative level in English through a wide range of multimedia resources as, for instance, audio-books, learning apps, educational websites, TV series, films, board games, and music. These multimodal tools are of easy access to students since the vast majority are friendly-user. Our duty through this project was to select the most useful ones for all kind …
Communicative English Language Skills Improvement Programme (CELSIP)
2021
This is a programme under the supervision of the coordinators for the subjects Foreign Language I (English) & Foreign Language II (English) from the Teaching Unit of English - Department of Didactics of Languages and Literature. It is designed as an additional English language training programme to get our students achieved a higher communicative level of English. With CELSIP we seek to help students increase the cognitive, literacy, practical strategies, tools and abilities they need to become successful teachers of English with brilliant communication abilities. Our philosophy is further based on our shared experiences working with a variety of students, ranging from Primary, Secondary, H…
Rasch measurement in educational contexts Special issue 1: Rasch modeling in educational testing
2011
This is the first of two special journal issues on Rasch measurement in educational contexts. Most of the articles compiled in these two issues originate from a symposium of the same title held in ...
Advantages of the Rasch measurement model in analysing educational tests:an applicator's reflection
2011
Educational achievement is a very important issue for parents, teachers, and the government. An accurate measurement plays a very important role in evaluating achievement fairly, and, therefore, analysis methods have been developed considerably in recent years. Education based on long-time learning processes forms a fruitful base for item tests, as it opens up possibilities to design a nearly unlimited number of items. There are several methods available to analyse such tests, but which method is the most useful and in which situation? The Rasch measurement from the Institute for Object Measurement (IOM) has pointed out to be the most useful in evaluating individual items and their function…
SURATRAM - Intelligent Transport System for freight management in urban areas
2022
The project developed in the framework of this thesis is part of a more global and ambitious research program that aims at proposing a new type of goods management system in urban centers. In order to do so, the project aims to approach the management of goods from a systemic point of view, by integrating the management into the field of Intelligent Goods Transport Systems (ITS). This systemic vision of the management of goods in urban areas requires the use of electric and autonomous vehicles to ensure the tasks of delivery and collection of goods. In addition, these vehicles will be able to use the existing public transport network of the cities to move from an urban distribution center (…
Racecar Longitudinal Control in Unknown and Highly-Varying Driving Conditions
2020
This paper focuses on racecar longitudinal control with highly-varying driving conditions. The main factors affecting the dynamic behavior of a vehicle, including aerodynamic forces, wheel rolling resistance, traction force resulting from changing tire-road interaction as well as the occurrence of sudden wind gusts or the presence of persistent winds, are considered and assumed to have unknown models. By exploiting the theory on delayed input-state observers and using measurement data about the vehicle and wheel speeds, a dynamic filter that allows the online reconstruction of the above-mentioned unknown time-varying quantities is derived. Moreover, by exploiting the notion of effective tir…
CiceRobot: a cognitive robot for interactive museum tours
2007
PurposeThe aim of this paper is to integrate perception, action and symbolic knowledge to allow an autonomous robot to operate in unstructured environments and to interact with non‐expert users.Design/methodology/approachTo achieve such goals, a cognitive robot architecture is proposed based on the integration between subsymbolic and linguistic computations through the introduction of an intermediate level of representation based on conceptual spaces.FindingsThe architecture has been tested in the CiceRobot project on tasks related to guided tours in the Archaeological Museum of Agrigento. Experimental results show that robot cognitive behaviors allow one to achieve a full functional roboti…