Word based off-line handwritten Arabic classification and recognition. Design of automatic recognition system for large vocabulary offline handwritten Arabic words using machine learning approaches.

The design of a machine which reads unconstrained words still remains an unsolved problem. For example, automatic interpretation of handwritten documents by a computer is still under research. Most systems attempt to segment words into letters and read words one character at a time. However, segmenting handwritten words is very difficult. So to avoid this words are treated as a whole. This research investigates a number of features computed from whole words for the recognition of handwritten words in particular. Arabic text classification and recognition is a complicated process compared to Latin and Chinese text recognition systems. This is due to the nature cursiveness of Arabic text. The work presented in this thesis is proposed for word based recognition of handwritten Arabic scripts. This work is divided into three main stages to provide a recognition system. The first stage is the pre-processing, which applies efficient pre-processing methods which are essential for automatic recognition of handwritten documents. In this stage, techniques for detecting baseline and segmenting words in handwritten Arabic text are presented. Then connected components are extracted, and distances between different components are analyzed. The statistical distribution of these distances is then obtained to determine an optimal threshold for word segmentation. The second stage is feature extraction. This stage makes use of the normalized images to extract features that are essential in recognizing the images. Various method of feature extraction are implemented and examined. The third and final stage is the classification. Various classifiers are used for classification such as K nearest neighbour classifier (k-NN), neural network classifier (NN), Hidden Markov models (HMMs), and the Dynamic Bayesian Network (DBN). To test this concept, the particular pattern recognition problem studied is the classification of 32492 words using ii the IFN/ENIT database. The results were promising and very encouraging in terms of improved baseline detection and word segmentation for further recognition. Moreover, several feature subsets were examined and a best recognition performance of 81.5% is achieved

Antropofagia and Constructive Universalism: A Diptych

This study proposes a rethinking of the word-image relation through an examination of Joaquin Torres-García’s Constructive Universalism (ca.1934-1949) and the Brazilian Modernist movement of Antropofagia (1928-ca.1934). By placing both in the close relation of a ‘diptych,’ I argue for a new reading of Torres-García’s visual work as well as a different understanding of Antropofagia. In the first part of this work, I argue, through a close reading and viewing of Torres-García’s work, that the constitutive instability between word/image has been overlooked in favour of, on the one hand, an appropriation in terms of a ‘deviation’ from the canon of Geometric Abstraction and on the other hand as a paradigm of Pre-Columbian, Inca abstraction. Both discursive gestures repress the matter of visual aesthesis. Against this strategy of legibility, I propose a counter-reading through the concepts of ‘graphism’ (Leroi-Gourhan), ‘manuscription’ (Sarabia), the ‘sensory field’ (Lyotard) and the hypericon. These concepts allow contingency to find its way back into Torres-García’s oeuvre in opposition to neo-Classicist misappropriations. Throughout my argument, it will become evident that Torres-García’s paintings bespeak an irrepressible mestizaje, an intertwining of the figural with the abstract. It is this tension animating Torres-García’s work that has been neglected by the disciplining of discourse’s ‘logic of illustration.’ In the second part of the study, I take Antropofagia not so much as a historically determinate period in the narrative of Brazilian Modernism, but as a heuristic for the thinking through of the ‘inconstancy’ of the relation between word and image in its New World Baroque vertigo. This vertigo is politically charged, and amounts to a ‘counter-Conquest’ (Lezama Lima) of the clear and distinct distribution of legibility and visibility inherited through coloniality. The metaphoric economy of cannibalism in Oswald de Andrade’s “Manifesto Antropófago” (1928) in conjunction with the visual work of Tarsila do Amaral and the ‘re-discovery’ of Barroco Mineiro by the Brazilian avant-garde deconstructs the narrative of rupture so as to engage in a complex ‘route to roots’ highlighting the artifice of origin. This same artifice marks Torres-García’s oeuvre, and by ‘closing’ the diptych, I show how abstraction folds back into a Baroque superimposition

Research on Teaching and Learning In Biology, Chemistry and Physics In ESERA 2013 Conference

This paper provides an overview of the topics in educational research that were published in the ESERA 2013 conference proceedings. The aim of the research was to identify what aspects of the teacher-student-content interaction were investigated frequently and what have been studied rarely. We used the categorization system developed by Kinnunen, Lampiselkä, Malmi and Meisalo (2016) and altogether 184 articles were analyzed. The analysis focused on secondary and tertiary level biology, chemistry, physics, and science education. The results showed that most of the studies focus on either the teacher’s pedagogical actions or on the student - content relationship. All other aspects were studied considerably less. For example, the teachers’ thoughts about the students’ perceptions and attitudes towards the goals and the content, and the teachers’ conceptions of the students’ actions towards achieving the goals were studied only rarely. Discussion about the scope and the coverage of the research in science education in Europe is needed.Peer reviewe