Now showing items 3834-3853 of 5479

    New trends for conducting hazard & operability (HAZOP) studies in continuous chemical processes 

    Dunjó Denti, Jordi (Date of defense: 2010-02-18)

    Identifying hazards is fundamental for ensuring the safe design and operation of a system in process plants and other facilities. Several techniques are available to identify hazardous situations, all of which require their ...

    New updated reference Lagrangian smooth particle hydrodynamics framework for large strain solid dynamics ans its extension to dynamic fracture 

    Refachinho de Campos, Paulo Roberto (Date of defense: 2022-09-27)

    (English) This work presents a new updated reference Lagrangian Smooth Particle Hydrodynamics (SPH) algorithm for the analysis of large deformation by introducing a novel system of first order conservation laws. Both ...

    Next generation multibeam satellite systems 

    Joroughi, Vahid (Date of defense: 2015-12-02)

    Satellite communication will play a central role towards fulfilling next generation 5G communication requirements. As a matter of fact, anytime-anywhere connectivity cannot be conceived without the presence of the satellite ...

    Next generation optical access networks and coexistence with legacy PONs 

    Velásquez Micolta, Juan Camilo (Date of defense: 2019-07-25)

    Nowadays, Fiber-to-the-Home is one of the most promising solutions to provide broadband services in access networks. However, the fiber is inefficiently used as most of the deployed systems are still based on Time Division ...

    Next generation overlay networks : security, trust, and deployment challenges 

    Paillissé Vilanova, Jordi (Date of defense: 2021-07-23)

    Overlay networks are a technique to build a new network on top of an existing one. They are a key tool to add functionality to existing networks, and are used in different layers of the Internet stack for a wide variety ...

    Next generation passive optical networks based on orthogonal frequency division multiplexing techniques 

    Escayola Elias, Francesc Xavier (Date of defense: 2015-12-11)

    In recent decades, the industry of communications has acquired huge significance, and nowadays constitutes an essential tool for the society information. Thus, the exponential growth in demand of broadband services and ...

    Nivel de adquisición y transferencia de las tecnologías de la información en el desarrollo global de empresas del sector construcción del Perú 

    Soto Vásquez, Duber Enrique (Date of defense: 2017-06-21)

    This thesis develops a study of two important aspects of the construction companies, first known as are the construction companies inside, organization and functional structure and the second how is the level of acquisition ...

    El nivel de comprensión lectora y de representación mental en los estudiantes de sexto grado de las escuelas públicas y privadas urbanas del distrito escolar de Ponce, Puerto Rico 

    Rodríguez Cintrón, Rosany (Date of defense: 2016-01-15)

    The purpose of this research was to determine the level of reading comprehension and mental representation in sixth grade students in urban public and private schools in the District of Ponce, Puerto Rico. Sociodemographic ...

    "No tengo palabras para decirlo" o El rol de los diagramas en la resolución mental de sistemas artificiales reales en proyectos 

    Estay Niculcar, Christian A. (Date of defense: 2001-07-19)

    La tesis que aquí se expone gira en torno a la cuestión de la construcción de la realidad. En particular, en el ámbito de la ingeniería, esta construcción tiene que ver con sistemas artificiales que emergen como realidades ...

    Nocturnal coastal fronts in the Mediterranean basin 

    Mazón, Jordi (Date of defense: 2015-04-21)

    The main goal of this thesis is to investigate the formation of nocturnal coastal fronts (hereafter CF) in the Mediterranean basin producing nocturnal offshore precipitation near the coastline. After sunset the cooled ...

    Nodal distributions on the high-dimensional simplex for high-order interpolation and integration 

    Jiménez Ramos, Albert (Date of defense: 2023-06-28)

    (English) To simulate unsteady phenomena on complex moving geometry, computational scientists and engineers have been interested in unstructured space-time discretizations. These space-time discretizations aim to overcome ...

    Noise assisted effects in physics and biophysics studied by the optical trapping technique 

    Martínez Sánchez, Ignacio A. (Date of defense: 2014-04-25)

    Almost two centuries after the first observations of Robert Brown, the study of systems ruled by noise has become a significant part of modern physics and other so diverse situations, such as the stock market, personal ...

    Només imatges: la targeta postal, vehicle de coneixement urbà 

    Sardà Ferran, Jordi (Date of defense: 2012-12-12)

    This dissertation is a study of the contemporary city using picture postcards as its sole frame of reference. Until now the postcard has enjoyed little recognition as a documentary medium that could function reliably and ...

    NoMoDEI : A framework for Norm Monitoring on Dynamic Electronic Institutions 

    Gómez Sebastià, Ignasi (Date of defense: 2016-01-27)

    With the growth of the Internet, computational systems have become more and more complex, often including complicate interconnected networks of autonomous components. The need to bring some organisational structure into ...

    Nomsothermal multiphase flow of brine and gas through saline media 

    Olivella Pastallé, Sebastià (Date of defense: 1995-07-12)

    Presentamos una formulación nueva para el análisis de problemas Termo-hidro-mecánicos en medios salinos. Esta formulación incluye, desde la obtención de ecuaciones de balance de masa, momento y energía hasta su resolución ...

    Non-centralized optimization-based control schemes for large-scale energy systems 

    Ananduta, Wayan Wicak (Date of defense: 2019-12-17)

    Non-centralized control schemes for large-scale systems, including energy networks, are more flexible, scalable, and reliable than the centralized counterpart. These benefrts are obtained by having a set of local control!ers, ...

    Non-classical thermal transport and phase change at the nanoscale 

    Calvo Schwarzwälder, Marc (Date of defense: 2019-07-12)

    For 200 years, Fourier’s law has been used to describe heat transfer with excellent results. However, as technology advances, more and more situations arise where heat conduction is not well described by the classical ...

    Non-functional considerations of time-randomized processor architectures 

    Trilla Rodríguez, David (Date of defense: 2020-12-04)

    Critical Real-Time Embedded Systems (CRTES) are the subset of embedded systems with timing constraints whose miss behavior can endanger human lives or expensive equipment. To provide evidence of correctness, CRTES are ...

    Non-functional requirements as drivers of software architecture design 

    Ameller, David (Date of defense: 2014-01-23)

    In the last decades, software engineering has become an important area of research. As researchers, we try to identify a problem, a need, or a hole in some research topic, once identified we make an effort to produce new ...

    Non-linear finite element analysis oriented to optimisation of fibre reinforced concrete structures 

    Nogales Arroyo, Alejandro (Date of defense: 2022-04-11)

    The construction industry is one of the industrial sectors with the largest output worldwide and, thus, of great economic interest. In this sector, reinforced concrete plays a significant role since it is one of the most ...