Now showing items 4042-4061 of 5474

    On the measurement of fracture toughness to understand the cracking resistance of advanced high strength steel sheets 

    Frómeta Gutiérrez, David (Date of defense: 2021-01-28)

    Automotive designers are constantly facing new challenges to meet the more and more stringent safety and CO2 emission legislations. Concerning the latter, vehicle lightweighting has become one of the main goals of the ...

    On the mechanics of strain localization in plasticity : isotropic and orthotropic, cohesive and frictional, associated and non-associated models 

    Kim, Sungchul (Date of defense: 2021-07-21)

    In this thesis, two main topics have been covered: the mechanics of strain localization in plasticity and the performance of several mixed finite elements subjected to plastic strain localization. Throughout the thesis, ...

    On the numerical simulation of compressible flows 

    Pedro Costa, Juan Bautista (Date of defense: 2019-05-23)

    In this thesis, numerical tools to simulate compressible flows in a wide range of situations are presented. It is intended to represent a step forward in the scientific research of the numerical simulation of compressible ...

    On the programmability of heterogeneous massively-parallel computing systems 

    Gelado Fernández, Isaac (Date of defense: 2010-07-02)

    Heterogeneous parallel computing combines general purpose processors with accelerators to efficiently execute both sequential control-intensive and data-parallel phases of applications. Existing programming models for ...

    On the programmability of multi-GPU computing systems 

    Cabezas Rodríguez, Javier (Date of defense: 2015-06-29)

    Multi-GPU systems are widely used in High Performance Computing environments to accelerate scientific computations. This trend is expected to continue as integrated GPUs will be introduced to processors used in multi-socket ...

    On the quasiperiodic hamiltonian andronov-hopf bifurcation 

    Pacha Andújar, Juan Ramón (Date of defense: 2002-10-21)

    Aquest treball es situa dintre del marc dels sistemes dinàmics hamiltonians de tres graus de llibertat. Allà considerem famílies d'òrbites periòdiques amb una transició estable-complex inestable: sigui L el paràmetre que ...

    On the question of limits : The role of ecotones in the management and reintegration of transforming urban environments : Urban ecotones as territorial indicators and interfaces of urban reconfiguration : An applied study of the urban regional mosaic of the city of Thessaloniki, Greece 

    Kourkoutas, Konstantinos (Date of defense: 2015-07-16)

    The general topic discussed in this dissertation is the question of limits as perceived and delimited by humans. More specifically it aims to investigate the concept of ecotones as it has emerged in the theory of landscape ...

    On the resource abstraction, partitioning and composition for virtual GMPLS-controlled multi-layer optical networks 

    Vilalta Cañellas, Ricard (Date of defense: 2013-12-03)

    Virtual optical networking supports the dynamic provisioning of dedicated networks over the same network infrastructure, which has received a lot of attention by network providers. The stringent network requirements (e.g., ...

    On the role of oscillatory dynamics in neural communication 

    Pérez Cervera, Alberto (Date of defense: 2019-04-04)

    In this Thesis we consider problems concerning brain oscillations generated across the interaction between excitatory (E) and inhibitory (I) cells. We explore how two neuronal groups with underlying oscillatory activity ...

    On the role of performance interference in consolidated environments 

    Rameshan, Navaneeth (Date of defense: 2016-10-24)

    With the advent of resource shared environments such as the Cloud, virtualization has become the de facto standard for server consolidation. While consolidation improves utilization, it causes performance-interference ...

    On the scalability limits of communication networks to the nanoscale 

    Llatser Martí, Ignacio (Date of defense: 2014-01-17)

    Nanosystems, integrated systems with a total size of a few micrometers, are capable of interacting at the nanoscale, but their short operating range limits their usefulness in practical macro-scale scenarios. Nanonetworks, ...

    On the scalability of LISP and advanced overlaid services 

    Coras, Florin (Date of defense: 2015-07-23)

    In just four decades the Internet has gone from a lab experiment to a worldwide, business critical infrastructure that caters to the communication needs of almost a half of the Earth's population. With these figures on its ...

    On the service placement in community network micro-clouds 

    Selimi, Mennan (Date of defense: 2017-05-22)

    Community networks (CNs) have gained momentum in the last few years in response to the growing demand for network connectivity in rural and urban areas. These networks, owned and managed by volunteers, offer various services ...

    On the structure of graphs without short cycles 

    Salas Piñón, Julián (Date of defense: 2012-12-20)

    The objective of this thesis is to study cages, constructions and properties of such families of graphs. For this, the study of graphs without short cycles plays a fundamental role in order to develop some knowledge on ...

    On the theory of cell migration: durotaxis and chemotaxis 

    Diego Íñiguez, Javier (Date of defense: 2013-07-03)

    Cell migration is a fundamental element in a variety of physiological and pathological processes. Alteration of its regulatory mechanisms leads to loss of adhesion and increased motility, critical steps in the initial ...

    On the use of decadal predictions for agricultural climate services: bridging the gap between service providers and users 

    Solaraju Murali, Balakrishnan (Date of defense: 2023-01-26)

    (English) Unfavorable and extreme climate events such as drought and heat stress heavily impacts the agriculture sector and food security globally, and the impact of these climate hazards is expected to increase over the ...

    On-chip adaptive power management for WPT-Enabled IoT 

    Abdelhameed, Mohamed Ahmed Saad (Date of defense: 2018-06-13)

    Internet of Things (IoT), as broadband network connecting every physical objects, is becoming more widely available in various industrial, medical, home and automotive applications. In such network, the physical devices, ...

    On-chip biosensing platforms based on gold and silicon optical nano-resonators 

    Yavas, Ozlem (Date of defense: 2019-07-02)

    Point-of-care (POC) devices are compact, mobile and fast detection platforms expected to advance early diagnosis, treatment monitoring and personalized healthcare, and revolutionize today’s healthcare system, especially ...

    On-line coupling of volcanic ash and aerosols transport with global and regional meteorological models 

    Martí Donati, Alejandro (Date of defense: 2017-07-14)

    Explosive volcanic eruptions can eject large quantities of particulate matter that, along with other aerosol droplets and trace gases, are carried upwards into the atmosphere by the buoyant eruption column and then dispersed ...

    On-site pure hydrogen production in a catalytic membrane reactor by ethanol steam reforming 

    Hedayati, Ali (Date of defense: 2016-09-26)

    Hydrogen is considered as a clean energy carrier that can be converted to electricity by fuel cell with high efficiency. To be economically feasible and comparable, hydrogen needs to be liquefied, compressed, or adsorbed ...