Now showing items 5206-5225 of 5424

    UAV perception for safe flight under physical interaction 

    Cayero Becerra, Julián Francisco (Date of defense: 2019-06-07)

    The control of autonomous flying vehicles with navigation purposes is a challenging task. Complexity arises mainly due to the non-linearity and uncertainty inherently present in the flight mechanics and aircraft-air ...

    Ubiquitous supercomputing : design and development of enabling technologies for multi-robot systems rethinking supercomputing 

    Camargo Forero, Leonardo (Date of defense: 2019-10-25)

    Supercomputing, also known as High Performance Computing (HPC), is almost everywhere (ubiquitous), from the small widget in your phone telling you that today will be a sunny day, up to the next great contribution to the ...

    Ultra low-power, high-performance accelerator for speech recognition 

    Yazdani Aminabadi, Reza (Date of defense: 2019-07-25)

    Automatic Speech Recognition (ASR) is undoubtedly one of the most important and interesting applications in the cutting-edge era of Deep-learning deployment, especially in the mobile segment. Fast and accurate ASR comes ...

    Ultra-low power circuits based on tunnel FETs for energy harvesting applications 

    Cavalheiro, David (Date of defense: 2017-05-19)

    There has been a tremendous evolution in integrated circuit technology in the past decades. With the scaling of complementary metal-oxide-semiconductor (CMOS) transistors, faster, less power consuming and more complex chips ...

    Ultracold atoms in artificial gauge fields 

    Grass, Tobias (Date of defense: 2013-04-23)

    The present thesis studies a variety of cold atomic systems in artificial gauge fields. In the first part we focus on fractional quantum Hall effects, asking whether interesting topological states can be realized with cold ...

    Ultracold atoms in optical lattices with long-range interactions and periodic driving 

    Tieleman, Olivier (Date of defense: 2013-03-08)

    This thesis contains theoretical research on ultracold quantum gases in spatially periodic potentials, featuring high-frequency periodic driving, long-range interactions, or both. The largest part features deep potentials ...

    Ultracold Bose and Fermi dipolar gases : a quantum Monte Carlo study 

    Bombín Escudero, Raúl (Date of defense: 2019-12-13)

    The object of study of this thesis are dipolar systems in the quantum degenerate regime. In general, dealing with many-body systems and evaluating their properties requires to deal with the the Schrödinger equation. In the ...

    Ultracold dipolar gases in optical lattices 

    Trefzger, Christian (Date of defense: 2010-04-19)

    Esta tesis es un trabajo teórico, en el que estudiamos la física de los átomos dipolares bosónicos ultrafríos en retículos ópticos. Éstos gases consisten de átomos o moléculas bosónicas, enfriados bajo la temperatura de ...

    Ultrafast carrier and structural dynamics in graphite detected via attosecond soft X-ray absorption spectroscopy 

    Di Palo, Nicola (Date of defense: 2020-03-26)

    Understanding most of the physical and chemical phenomena determining the world around us requires the possibility to interrogate their main characters on their natural scale in space and time. The insulating or conductive ...

    Ultrafast optical parametric oscillators : novel systems, techniques, and concepts 

    Badarla, Venkata Ramaiah (Date of defense: 2014-10-31)

    In this thesis, we have demonstrated various ultrafast optical parametric oscillators (OPOs) based on different nonlinear media. The thesis consists of OPO systems, novel techniques, designs, and concepts that has facilitated ...

    Ultrafast optoelectronics in 2D materials and their heterostructures 

    Massicotte, Mathieu (Date of defense: 2017-09-05)

    Understanding and improving how light is converted into electricity in materials is one of the central goals in the field of optoelectronics. This basic physical process lies at the heart of several major technologies, ...

    Ultrafast quantum control of atoms and molecules : a density matrix approach 

    Afa, Iduabo John (Date of defense: 2018-01-24)

    Control is important for transferring theoretical scientific knowledge into practical technology for applications in numerous fields. This is why coherent control study is significant on every timescale to have a complete ...

    Ultrashort laser pulse measurement for multiphoton microscopy 

    Amat Roldan, Ivan (Date of defense: 2013-06-21)

    In this thesis, we address specific efforts towards developing the precise aspect of ultrashort laser pulse measurement in the context of biomedical research. The motivation for pursuing these new developments was triggered ...

    Ultrasonic nodal point: a new configuration for ultrasonic moulding. Advances towards the complete industrialisation of the technology 

    Janer Angelet, Marcel (Date of defense: 2022-12-01)

    (English) Ultrasonic moulding is a promising technology that could be used as a substitute for conventional injection moulding techniques. This relatively new technology has a lower energy consumption, and it could be a ...

    Ultrasound micromolding technique and real-time X-ray diffraction using synchrotron radiation : applications to porous scaffolds for biomedical devices and study of thermal-induced transitions 

    Olmo Osuna, Cristian (Date of defense: 2021-07-16)

    Current market trend is moving to miniaturized specimens, especially in the biomedical field seeking high effective and less invasive treatrnent. Ultrasound (US) micromolding is a new technique developed to the aim of ...

    Ultrasound-assisted liquefaction of honey 

    Kabbani, Dania (Date of defense: 2014-03-28)

    Crystallization of honey is a common process of the honey industry. Liquid honey is preferred by most of the consumers and by food companies for ease of handling. Honey is commonly heated during pasteurization in order to ...

    Ultrastructural analysis of odontocete cochlea 

    Morell Ybarz, Maria (Date of defense: 2012-05-04)

    The morphological study of the Odontocete organ of Corti including possible pathological features resulting from sound over-exposure, represent a key conservation issue to assess the effects of acoustic pollution on marine ...

    Ultrathin metal transparent electrodes for the optoelectronics industry 

    Ghosh, Dhriti Sundar (Date of defense: 2012-10-11)

    Transparent electrodes (TEs) are the essential elements of many optoelectronic devices such as solar cells, touch screens, organic LEDs, and LCDs. Consequently demand for TEs is growing very steeply and the market value ...

    Um olhar sobre a arquitectura do prédio de rendimento no Porto e a Rua de Sá da Bandeira como sua metonímia 

    Campello, Antonio Ferreira de Lima Cabral (Date of defense: 2012-12-18)

    Não foi a arquitectura que, pelo seu contributo teórico e/ou inovador, entrou para a história das vanguardas da arquitectura aquela que mais nos interessou abordar, mas sim a proposta de um olhar atento sobre a arquitectura ...

    Un Nuevo enfoque de los precursores sísmicos: monitorización de la interacción frágil-dúctil de la litosfera y su relación con grandes terremotos 

    Tarela Alonso, Ester (Date of defense: 2012-06-22)

    The main goal of this thesis is to test the brittle-ductile (BD) interaction hypothesis of the lithosphere. The model uses the correlation of two parameters, the seismicity characterizing the brittle part and the attenuation ...