Now showing items 4108-4127 of 5479

    Optimization of alpha emitter's determination in water. Behavior of radionuclides in water treatment plants 

    Montaña Guerra, Montserrat (Date of defense: 2013-07-24)

    La determinació de l’índex alfa total en aigües és d’interès per ser un dels paràmetres inclòs en la legislació nacional e internacional associada a la qualitat de l’aigua per al consum humà. Aquest índex informa de la ...

    Optimization of design procedures and quality control for FRC 

    Galeote Moreno, Eduardo (Date of defense: 2018-12-14)

    Fibre reinforced concrete (FRC) presents objectively proven advantages in terms of post-cracking strength and manufacturing procedures. As a result, FRC with structural responsibility is increasingly being used in the ...

    Optimization of emerging extended FTTH WDM/TDM PONs and financial overall assessment 

    Chatzi, Sotiria (Date of defense: 2013-11-26)

    Optical access technology has experienced a boost in the last years, thanks to the continuously migrating multimedia services that are offered over the internet. Though the technologies used for deploying Fiber-To-The-x ...

    Optimization of field matching in external photon beam radiation therapy 

    Hernández Masgrau, Víctor (Date of defense: 2013-11-07)

    Radiation therapy is one of the main modalities used for treating cancer patients, together with surgery and chemotherapy. Radiotherapy treatments can be carried out with a great variety of devices, but most treatments are ...

    Optimization of interplanetari trajectories with gravity assist 

    Torre Sangrà, David de la (Date of defense: 2020-07-28)

    Interplanetary travel is a difficult task due to the high fuel mass required to reach other planets. Minimizing the cost of the manoeuvres (and, in turn, the fuel mass) is the objective preliminary mission design. During ...

    Optimization of positioning capabilities in wireless sensor networks : from power efficiency to medium access 

    Moragrega Estrany, Anna (Date of defense: 2016-02-04)

    In Wireless Sensor Networks (WSN), the ability of sensor nodes to know its position is an enabler for a wide variety of applications for monitoring, control, and automation. Often, sensor data is meaningful only if its ...

    Optimization of Segmentation-Based Video Sequence Coding Techniques. Application to content based functionalities 

    Morros Rubió, Josep Ramon (Date of defense: 2004-12-23)

    En aquest treball s'estudia el problema de la compressió de video utilitzant funcionalitats basades en el contingut en el marc teòric dels sistemes de codificació de seqüències de video basats en regions. Es tracten ...

    Optimization of yard operations in container terminals from an energy efficiency approach 

    Terán Cobo, Pablo (Date of defense: 2018-06-25)

    This Thesis addresses common operational issues related to maritime container terminals. In the last decades, containerization of maritime transportation has grown very rapidly, forcing terminal operators to cope with ...

    Optimization on industrial problems focussing on multi-player strategies 

    Coma Company, Martí (Date of defense: 2022-07-26)

    Algorithms (EA) are useful optimization methods for exploration of the search space, but they usually have slowness problems to exploit and converge to the minimum with accuracy. On the other hand, gradient based methods ...

    Optimization strategies for efficient dosage of H2O2 in Fenton and photo-Fenton processes 

    Yu, Xiangwei (Date of defense: 2021-07-07)

    This Thesis work addresses the challenge of designing hydrogen peroxide (H2O2) dosage Strategies for improving Fenton and photo-Fenton applications. The determination of the H2O2 dosage scheme that minimizes hydrogen ...

    Optimization techniques for fine-grained communication in PGAS environments 

    Alvanos, Michail (Date of defense: 2013-12-10)

    Partitioned Global Address Space (PGAS) languages promise to deliver improved programmer productivity and good performance in large-scale parallel machines. However, adequate performance for applications that rely on ...

    Optimized content caching strategies for multi-access edge computing (MEC)-assisted future cellular networks 

    Ayenew, Tadege Mihretu (Date of defense: 2023-11-21)

    (English) Handling the tsunami of multimedia content is a big challenge for heterogeneous cellular networks. Serving large volumes of content from the central system to end-users, through a bandwidth-limited network, at ...

    Optimizing IETF multimedia signaling protocols and architectures in 3GPP networks : an evolutionary approach 

    Viamonte Solé, David (Date of defense: 2019-06-16)

    Signaling in Next Generation IP-based networks heavily relies in the family of multimedia signaling protocols defined by IETF. Two of these signaling protocols are RTSP and SIP, which are text-based, client-server, ...

    Optimizing programming models for massively parallel computers 

    Farreras Esclusa, Montse (Date of defense: 2008-12-12)

    Since the invention of the transistor, clock frequency increase was the primary method of improving computing performance. As the reach of Moore's law came to an end, however, technology driven performance gains became ...

    Optimizing SIMD execution in HW/SW co-designed processors 

    Kumar, Rakesh (Date of defense: 2014-07-24)

    SIMD accelerators are ubiquitous in microprocessors from different computing domains. Their high compute power and hardware simplicity improve overall performance in an energy efficient manner. Moreover, their replicated ...

    Optimizing VLIW architectures for multimedia applications 

    Salamí San Juan, Esther (Date of defense: 2007-06-01)

    The growing interest that multimedia processing has experimented during the last decade is motivating processor designers to reconsider which execution paradigms are the most appropriate for general-purpose processors. On ...

    Optimizing workspace division for multi-UAV systems 

    Skorobogatov, Georgy (Date of defense: 2023-10-27)

    (English) With the advance of UAV-related technology using several drones in the context of a single mission becomes more and more common. New problems and challenges appear as a result. When analyzing research works ...

    Optoelectronic optimization of photocatalytic processes for wastewater treatment 

    Tapia Tlatelpa, Tecilli (Date of defense: 2019-10-03)

    Water pollution is an alarming problem that endangers the health of all living beings. The textile industry is listed as one of the most contaminating industries, since in order to carry out its dyeing and finishing ...

    Optomechanical resonators based on low dimensional materials 

    Tepsic, Slaven (Date of defense: 2021-07-07)

    Mechanical resonators based on low dimensional materials have attracted a lot of attention due to their remarkable properties. Their ultra-low mass and high Q factors make them exceptional sensors, offering new possibilities ...

    Optomechanical resonators based on transition metal dichalcogenide monolayers 

    Morell Bennasser, Nicolás (Date of defense: 2018-12-17)

    Suspended monolayer transition metal dichalcogenides (TMD) aremembranes that combine ultralow mass and exceptional optical prop-erties, making them intriguing materials for opto-mechanical applica-tions. However, the low ...