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141.
Olga Beltcheva Domenico Ponta & Giorgio Da Bormida 《British journal of educational technology : journal of the Council for Educational Technology》1998,29(1):15-24
A multimedia component kit for digital electronics authoring and learning is presented. It is based on a sophisticated structuring mechanism and a flexible link management scheme. Components available on the Internet facilitate sharing and reuse of educational software during the authoring process, make possible the support of all phases of the learning process, and allow students to achieve their desired depth of understanding. Emphasis is put on the implementation of a great number of components based on simulation and animation that provide a high level of interactivity and allow some presentation difficulties inherent in the subject to be overcome. An analysis of the impact of using the kit for authoring and learning is currently being performed. 相似文献
142.
This study relies on eye tracking technology to investigate how humans perceive others' feeding actions. Results demonstrate that 6-month-olds (n = 54) anticipate that food is brought to the mouth when observing an adult feeding herself with a spoon. Still, they fail to anticipate self-propelled (SP) spoons that move toward the mouth and manual combing actions directed toward the head. Ten-month-olds (n = 54) and adults (n = 32) anticipate SP spoons; however, only adults anticipate combing actions. These results suggest that goal anticipation during observation of feeding actions develops earlier and is less dependent on directly perceived actions than goal anticipation during observation of other manual actions. These results are discussed in relation to experience and a possible phylogenetic influence on perception and understanding of feeding. 相似文献
143.
Beatriz Trinchão Andrade Olga Regina Pereira Bellon Luciano Silva Alexandre Vrubel 《Journal of Cultural Heritage》2012,13(1):28-39
Three-dimensional (3D) digital preservation aims at generating 3D models of objects that have cultural or scientific value. It allows realistic visualization of objects through virtual museums or scientific applications, and the restoration of the preserved object in case of natural wear or accidents. This work contributes to this research area by presenting a method to improve color texture quality of 3D models obtained from color and depth images of a laser scanner. Although this device offers precise depth information, the resulting color information is still poor and limits the generation of realistic textures. Our approach is to capture photographs of the object with a high-resolution digital camera and use them to generate a new color texture for the 3D model. Our work proposes a practical technique, easy to replicate, to generate high quality textures for 3D models from photographs. The method is composed by three main steps: (1) calibration of the image acquisition devices; (2) data acquisition; and (3) texture generation. In this paper, we detail our color texture generation method and apply it on the digital preservation of many artworks made by native Brazilians (indians) from the Wauja and Karaja communities. These indigenous communities are acknowledged as great ceramic artists, each bearing their own main themes, using a very rich symbolism in their paintings. Their artworks represent important aspects of the native South American culture and their digital preservation is motivated by three main reasons: (1) their fragility; (2) the paintings loose their original appearance with time; and (3) the possibility of extinction of these communities. We present several results of preserved artworks with enhanced quality realistic texture maps. Also, we present a methodology to analyze the quality and accuracy of texture maps. The resulting 3D models can be visualized through a tool we developed to support the virtual exhibit of 3D preserved heritage. 相似文献
144.
Beatriz Trinchão Andrade Caroline Mazetto Mendes Jurandir de Oliveira Santos Olga Regina Pereira Bellon Luciano Silva 《Journal of Cultural Heritage》2012,13(2):210-214
We present our recent efforts in the digital preservation of a set of baroque sculptures made by Antônio Francisco Lisboa, known as O. Aleijadinho, which is an important American baroque artist. The set was made in the beginning of the xix century and is composed of 12 near real sized sculptures, hand-carved in soapstone. These sculptures represent 12 of the 16 prophets from the Holy Bible and are part of a UNESCO World Heritage Site. Our group has been collaborating with UNESCO in a project that aims to preserve all these statues. We hereby present our initial efforts, consisting of the 3D digital preservation of the Prophet Joel sculpture. We developed a complete 3D digital preservation pipeline composed of four main stages: data acquisition, 3D reconstruction, texture generation and 3D model visualization. By evaluating our results in this first sculpture, we discuss the improvements we conceived before applying our pipeline in the remaining ones. Finally, we present the 3D model of the Prophet which registers the sculpture's current state and will be used in restoration, research and educational activities. We believe this contribution may be useful to guide further research on similar scenarios, showing how to avoid some practical mistakes and achieve good results. 相似文献
145.
Olga Calderón 《Cultural Studies of Science Education》2016,11(3):653-667
The pulse oximeter is a device that measures the oxygen concentration (or oxygen saturation—SpO2); heart rate, and heartbeat of a person at any given time. This instrument is commonly used in medical and aerospace fields to monitor physiological outputs of a patient according to health conditions or physiological yields of a flying pilot according to changes in altitude and oxygen availability in the atmosphere. Nonetheless, the uses for pulse oximetry may expand to other fields where there is human interaction and where physiological outputs reflect fluctuations mediated by arising emotions. A classroom, for instance is filled with a plethora of emotions, but very often participants in this space are unaware of others’ or their own sentiments as these arise as a result of interactions and responses to class discussions. In this paper I describe part of a larger study-taking place at Brooklyn College of the City University of New York. The focus is on the exploration of emotions and mindfulness in the science classroom. The oximeter is used in this study as a reflexive tool to detect emotions emerging among participants of a graduate History and Philosophy of Science Education course offered in the spring of 2012. Important physiological information of class participants provided by the oximeter is used to analyze the role of emotions in the classroom as sensitive and controversial topics in science education are discussed every week. 相似文献
146.
Constant solutions to Yang-Baxter equation are investigated over Grassmann algebra for the case of 6-vertexR-matrix. The general classification of all possible solutions over Grassmann algebra and particular cases with 2,3,4 generators
are studied. As distinct from the standard case, whenR-matrix over number field can have a maximum 5 nonvanishing elements, we obtain over Grassmann algebra a set of new full 6-vertex
solutions. The solutions leading to regularR-matrices which appear in weak Hopf algebras are considered. 相似文献
147.
148.
The purpose of this study was to examine the effectiveness of intensive interaction during interactive play between a preschool boy with autism and his teacher and, as a consequence, improve the social interaction between the boy and a non-autistic girl in an inclusive class in Greece. A single subject ABA design was applied. Observed variables included changes in the frequency of initiations and responses of the two children. Results indicated significant improvement and post-training maintenance in the social interaction of the two children. Discussion of results in light of known research in autism is highlighted and implications are discussed. 相似文献
149.
Hendrik Lohse-Bossenz Olga Kunina-Habenicht Mareike Kunter 《European Journal of Psychology of Education - EJPE》2013,28(4):1543-1565
The aim of this study is to identify psychological topics within the areas of learning, development, and assessment that are especially important for teachers and should be included in the university teacher education curriculum. Based on the observation that teacher educators in psychology often face the challenge of having to select certain topics from a large body of possible content, at the risk of causing large variation of knowledge between teachers, we asked 48 experts from different fields of teacher education (psychologists, non-psychologists at university, and educators from the induction phase) to evaluate psychological topics with respect to their importance to teaching. In the following two rounds (Delphi method), experts selected topics which they felt should be taught at university. Although differences existed at the beginning, a ranking of topics was obtained. Further, we explored the way experts with different backgrounds achieved consensus to support the validity and acceptance of the results. Concluding, we discuss the usefulness of the results with a focus on the acquisition of psychological knowledge for teachers and to foster the position of educational psychology within teacher education. 相似文献
150.
Bakadorova Olga Lazarides Rebecca Raufelder Diana 《European Journal of Psychology of Education - EJPE》2020,35(1):73-91
European Journal of Psychology of Education - While school self-concept is an important facilitator of a student’s school engagement, previous studies rarely investigated whether it may also... 相似文献