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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.
81

Multi-Robot Learning of High-Level Skills in RoboCup

Pedro Lavarinhas Amaro 24 September 2019 (has links)
No description available.
82

Android Crawler

Marco António Fernandes Gonçalves 21 September 2019 (has links)
No description available.
83

Anatomy Segmentation of Breast Ultrasound images

António Mesquita dos Santos Marques Carreiro 16 October 2019 (has links)
Breast cancer is one of the most common cancers in women, affecting hundreds of women. Even though the detection of cancer has been largely studied, the decision of which strategy to take concerning oncoplastic surgery still relies almost exclusively on the surgeon's perception of post-surgical aesthetic result, which sometime leads to unsatisfactory outcomes. In order to empower the patients on the joint decision process there needs to exist a better communication between the parts. This can be achieved by developing medical grade 3D models of the breast and explaining better the surgical options and their results. In order to obtain such models, some effort has been made concerning multi-modality radiological imaging combination. This line of research has yet to mature. In turn, the modality alignment requires accurate landmarks to be produced. 2D Ultrasound imaging has not been sufficiently studied for multimodal registration due to the image characteristics and thus, landmark segmentation is of utmost importance. This task can be challenging since US data presents high specular noise levels and the presence of some tissues alters the perception of other tissues. Objectives: ● Study and evaluation of different techniques for anatomical landmark segmentation, such as Skin, Fat and Glandular tissue, Lesions (masses and cysts), Pectoral muscle; ● Development of Ultrasound segmentation methods for acquiring landmarks; ● Evaluation of the developed methods with manual annotations and comparison of results with the current algorithm alternatives. / Breast cancer is one of the most common cancers in women, affecting hundreds of women. Even though the detection of cancer has been largely studied, the decision of which strategy to take concerning oncoplastic surgery still relies almost exclusively on the surgeon's perception of post-surgical aesthetic result, which sometime leads to unsatisfactory outcomes. In order to empower the patients on the joint decision process there needs to exist a better communication between the parts. This can be achieved by developing medical grade 3D models of the breast and explaining better the surgical options and their results. In order to obtain such models, some effort has been made concerning multi-modality radiological imaging combination. This line of research has yet to mature. In turn, the modality alignment requires accurate landmarks to be produced. 2D Ultrasound imaging has not been sufficiently studied for multimodal registration due to the image characteristics and thus, landmark segmentation is of utmost importance. This task can be challenging since US data presents high specular noise levels and the presence of some tissues alters the perception of other tissues. Objectives: ● Study and evaluation of different techniques for anatomical landmark segmentation, such as Skin, Fat and Glandular tissue, Lesions (masses and cysts), Pectoral muscle; ● Development of Ultrasound segmentation methods for acquiring landmarks; ● Evaluation of the developed methods with manual annotations and comparison of results with the current algorithm alternatives.
84

From Binary to Multi-Class Divisions: improvements on Hierarchical Divisive Human Activity Recognition

Tomás Vieira Caldas 15 October 2019 (has links)
No description available.
85

Producing Decisions and Explanations: A Joint Approach Towards Explainable CNNs

Isabel Cristina Rio-Torto de Oliveira 14 October 2019 (has links)
Deep Learning models, in particular Convolutional Neural Networks, have become the state-of-the-art in different domains, such as image classification, object detection and other computer vision tasks. However, despite their overwhelming predictive performance, they are still, for the most part, considered black-boxes, making it difficult to understand the reasoning behind their outputted decisions. As such, and with the growing interest in deploying such models into real world scenarios, the need for explainable systems has arisen. Therefore, this dissertation tries to mitigate this growing need, by proposing a novel CNN architecture, composed of an explainer and a classifier. The network, trained end-to-end, constitutes an in-model explainability method, that not only outputs decisions as well as visual explanations of what the network is focusing on to produce such decisions.
86

Testing Driver Attention in Virtual Environments Through Audio Cues

João Henrique Catarino Cardoso Loureiro 15 October 2019 (has links)
No description available.
87

Testing in IoT Systems: From Simulation to Visual-Based Testing

Bernardo Ferreira dos Santos Aroso Belchior 10 October 2019 (has links)
No description available.
88

Adversarial machine learning: denial of services recognition

Nuno Jorge Dias Carneiro Martins 10 October 2019 (has links)
No description available.
89

Glaucoma in Fundus Image

José Luís Pacheco Martins 10 October 2019 (has links)
No description available.
90

Smart Grids Community Providers and the Tariff Problem

Nuno Miguel Mendes Ramos 10 October 2019 (has links)
No description available.

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