Now showing items 175-194 of 358

    Improving web server efficiency on commodity hardware 

    Beltrán Querol, Vicenç (Date of defense: 2008-10-03)

    El ràpid creixement de la Web requereix una gran quantitat de recursos computacionals que han de ser utilitzats eficientment. Avui en dia, els servidors basats en hardware estendard son les plataformes preferides per ...

    In-operation planning in flexgrid optical core networks 

    Gifre Renom, Lluís (Date of defense: 2016-06-03)

    New generation applications, such as cloud computing or video distribution, can run in a telecom cloud infrastructure where the datacenters (DCs) of telecom operators are integrated in their networks thus, increasing ...

    Incentives for sharing heterogeneous resources in distributed systems : a participatory approach 

    Vega D'Aurelio, Davide (Date of defense: 2015-12-21)

    Contributory and volunteer computing ecosystems built around a community of participants need, like any other common-pool resources, an adaptive governance mechanism to guarantee the sustainability of the ecosystem. ...

    Information dissemination in mobile networks 

    Trullols Cruces, Oscar (Date of defense: 2014-07-17)

    This thesis proposes some solutions to relieve, using Wi-Fi wireless networks, the data consumption of cellular networks using cooperation between nodes, studies how to make a good deployment of access points to optimize ...

    Intelligent instrumentation techniques to improve the traces information-volume ratio 

    Llort Sánchez, Germán M. (Date of defense: 2015-11-03)

    With ever more powerful machines being constantly deployed, it is crucial to manage the computational resources efficiently. This is important both from the point of view of the individual user, who expects fast results; ...

    Interconnection of IP/MPLS Networks Through ATM and Optical Backbones using PNNI Protocols 

    Sánchez López, Sergio (Date of defense: 2003-10-07)

    Las redes de transporte se mueven hacia un modelo de redes formadas por routers IP/MPLS (Internet Protocol/Multiprotocol Laebel Switching) de altas prestaciones interconectadas a través redes troncales inteligentes. ...

    Internet sharing in community networks 

    Dimogerontakis, Emmanouil (Date of defense: 2017-05-26)

    The majority of the world's population does not have any or adequate Internet access. This implies that the Internet cannot provide universal service, reaching everyone without discrimination. Global access to the Internet ...

    Job scheduling for disaggregated memory in high performance computing systems 

    Vieira Zacarias, Felippe (Date of defense: 2023-10-09)

    (English) In a typical HPC cluster system, a node is the elemental component unit of this architecture. Memory and compute resources are tightly coupled in each node and the rigid boundaries between nodes limits compute ...

    Knowledge aggregation in people recommender systems : matching skills to tasks 

    Nguyen, Jennifer (Date of defense: 2019-11-08)

    People recommender systems (PRS) are a special type of RS. They are often adopted to identify people capable of performing a task. Recommending people poses several challenges not exhibited in traditional RS. Elements such ...

    Knowledge-defined networking : a machine learning based approach for network and traffic modeling 

    Mestres Sugrañes, Albert (Date of defense: 2017-12-12)

    The research community has considered in the past the application of Machine Learning (ML) techniques to control and operate networks. A notable example is the Knowledge Plane proposed by D.Clark et al. However, such ...

    Large scale geostatistics with locally varying anisotropy 

    Peredo Andrade, Oscar Francisco (Date of defense: 2022-06-09)

    Classical geostatistical methods are based on the hypothesis of stationarity, which allows to apply repetitive sampling in different locations of the spatial domain, in order to obtain enough information to infer cumulative ...

    Learning workload behaviour models from monitored time-series for resource estimation towards data center optimization 

    Buchaca Prats, David (Date of defense: 2021-01-14)

    In recent years there has been an extraordinary growth of the demand of Cloud Computing resources executed in Data Centers. Modern Data Centers are complex systems that need management. As distributed computing systems ...

    Leveraging disaggregated accelerators and non-volatile memories to improve the efficiency of modern datacenters 

    Call Barreiro, Aaron (Date of defense: 2022-11-07)

    (English) Traditional data centers consist of computing nodes that possess all the resources physically attached. When there was the need to deal with more significant demands, the solution has been to either add more nodes ...

    Leveraging graph neural networks for optimization and traffic compression in network digital twins 

    Almasan Puscas, Felician Paul (Date of defense: 2023-07-17)

    (English) In recent years, several industry sectors have adapted the Digital Twin (DT) paradigm to improve the performance of physical systems. This paradigm consists of leveraging computational methods to build high-fidelity ...

    Leveraging performance of 3D finite difference schemes in large scientific computing simulations 

    De la Cruz, Raúl (Date of defense: 2015-11-30)

    Gone are the days when engineers and scientists conducted most of their experiments empirically. During these decades, actual tests were carried out in order to assess the robustness and reliability of forthcoming product ...

    Load shedding in network monitoring applications 

    Barlet Ros, Pere (Date of defense: 2008-12-15)

    Monitoring and mining real-time network data streams are crucial operations for managing and operating data networks. The information that network operators desire to extract from the network traffic is of different size, ...

    Loop pipelining with resource and timing constraints 

    Sánchez Carracedo, Fermín (Date of defense: 1996-01-12)

    Developing efficient programs for many of the current parallel computers is not easy due to the architectural complexity of those machines. The wide variety of machine organizations often makes it more difficult to port ...

    Low-cost and efficient fault detection and diagnosis schemes for modern cores 

    Carretero Casado, Javier Sebastian (Date of defense: 2015-11-18)

    Continuous improvements in transistor scaling together with microarchitectural advances have made possible the widespread adoption of high-performance processors across all market segments. However, the growing reliability ...

    Low-power accelerators for cognitive computing 

    Riera Villanueva, Marc (Date of defense: 2020-10-09)

    Deep Neural Networks (DNNs) have achieved tremendous success for cognitive applications, and are especially efficient in classification and decision making problems such as speech recognition or machine translation. Mobile ...

    Low-power architectures for automatic speech recognition 

    Tabani, Hamid (Date of defense: 2018-02-21)

    Automatic Speech Recognition (ASR) is one of the most important applications in the area of cognitive computing. Fast and accurate ASR is emerging as a key application for mobile and wearable devices. These devices, such ...