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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Pen-Chant : Acoustic Emissions of Handwriting and Drawing

Seniuk, Andrew G. 27 September 2009 (has links)
The sounds generated by a writing instrument ("pen-chant") provide a rich and under-utilized source of information for pattern recognition. We examine the feasibility of recognition of handwritten cursive text, exclusively through an analysis of acoustic emissions. We design and implement a family of recognizers using a template matching approach, with templates and similarity measures derived variously from: smoothed amplitude signal with fixed resolution, discrete sequence of magnitudes obtained from peaks in the smoothed amplitude signal, and ordered tree obtained from a scale space signal representation. Test results are presented for recognition of isolated lowercase cursive characters and for whole words. We also present qualitative results for recognizing gestures such as circling, scratch-out, check-marks, and hatching. Our first set of results, using samples provided by the author, yield recognition rates of over 70% (alphabet) and 90% (26 words), with a confidence of 8%, based solely on acoustic emissions. Our second set of results uses data gathered from nine writers. These results demonstrate that acoustic emissions are a rich source of information, usable - on their own or in conjunction with image-based features - to solve pattern recognition problems. In future work, this approach can be applied to writer identification, handwriting and gesture-based computer input technology, emotion recognition, and temporal analysis of sketches. / Thesis (Master, Computing) -- Queen's University, 2009-09-27 08:56:53.895

Implementación de una herramienta de integración de varios tipos de interacción humano-computadora para el desarrollo de nuevos sistemas multimodales / Implementation of an integration tool of several types of human-computer interaction for the development of new multimodal systems

Alzamora M., Alzamora, Manuel I., Huamán, Andrés E., Barrientos, Alfredo, Villalta Riega, Rosario del Pilar January 2018 (has links)
Las personas interactúan con su entorno de forma multimodal. Esto es, con el uso simultaneo de sus sentidos. En los últimos años, se ha buscado una interacción multimodal humano-computador desarrollando nuevos dispositivos y usando diferentes canales de comunicación con el fin de brindar una experiencia de usuario interactiva más natural. Este trabajo presenta una herramienta que permite la integración de diferentes tipos de interacción humano computador y probarlo sobre una solución multimodal. / Revisión por pares

Developing test strips for naked-eye detection of alpha-hydroxy acids using indicator-displacement assays: an application of molecular recognition

Nguyen, Binh Thanh 28 August 2008 (has links)
Not available / text

Molecular recognition: structural and energetic aspects of preorganization, substrate specificity, and oligomerization

Benfield, Aaron Pillans 28 August 2008 (has links)
Not available / text

Names and faces: the role of name labels in the formation of face representations

Gordon, Iris 31 May 2011 (has links)
Although previous research in event-related potentials (ERPs) has focused on the conditions under which faces are recognized, less research has focused on the process by which face representations are acquired and maintained. In Experiment I, participants were required to monitor for a target "Joe" face that was shown amongst a series of distractor "Other" faces. At the half-way point, participants were instructed to switch targets from the Joe face to a previous distractor face that is now labeled "Bob". The ERP analysis focused on the posterior N250 component known to index face familiarity and the P300 component associated with context updating and response decision. Results showed that the N250 increased in negativity to target Joe face compared to the Bob face and a designated Other face. In the second half of the experiment, a more negative N250 was produced to the now target Bob face compared to the Other face. Critical1y, the more negative N250 to the Joe face was maintained even though Joe was no longer the target. The P300 component followed a similar pattern of brain response where the Joe face elicited a significantly larger P300 amplitude than the Other and Bob face. In the Bob half of the experiment, the Bob face elicited a reliably larger P300 than the Other faces and the heightened P300 to the Joe face was sustained. In Experiment 2, we examined whether the increased N2S0 negativity and enhanced P300 to Joe was due to simple naming effects. Participants were introduced to both Joe and Bob faces and names at the beginning of the experiment. During the first half of the experiment, participants were to monitor for the Joe face and at the half-way point, they were instructed to switch targets to the Bob face. Findings show that N250 negativity significantly increased to the Joe face relative to the Bob and Other faces in the first half of the experiment and an increased N250 negativity was found for target Bob face and the non-target Joe face in the second half. An increased P300 amplitude was demonstrated to the target Joe and Bob faces in the first and second halves of the experiment, respectively. Importantly, the P300 amplitude elicited by the Joe face equaled the P300 amplitude to the Bob face even though it was no longer the target face.The findings from Experiment 1 and 2 suggest that the N250 component is not solely determined by name labeling, exposure or task-relevancy, but it is the combination of these factors that contribute to the acquisition of enduring face representations. / Graduate

Face perception : sensitivity to feature displacement in normal, negative and inverted images

Kemp, Richard Ian January 1995 (has links)
No description available.

Does the 'special' nature of face processing extend to the working memory system?

Turk, David J. January 2001 (has links)
No description available.

Improving the acoustic modelling of speech using modular/ensemble combinations of heterogeneous neural networks

Antoniou, Christos Andrea January 2000 (has links)
No description available.

Connectionist modelling of categorization and identification data

Bankart, Michael John Gordon January 1993 (has links)
No description available.

Mice recognition - representation of earprints

Vara Piquer, Antonio, Verger Vidal, Sebastià A. January 2008 (has links)
Mice recognition - representation of earprints

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