Search results for "55"
showing 10 items of 2320 documents
Liver stiffness quantification in biopsy-proven nonalcoholic fatty liver disease patients using shear wave elastography in comparison with transient …
2021
Purpose: This study prospectively assessed the performance of liver stiffness measurements using point shear-wave elastography (p-SWE) in comparison with transient elastography (TE) in patients with biopsy-proven nonalcoholic fatty liver disease (NAFLD). Methods: Fifty-six consecutive adult patients with a histological diagnosis of NAFLD prospectively underwent TE and p-SWE on the same day. The median of 10 measurements (SWE-10), the first five (SWE-5), and the first three (SWE-3) measurements were analyzed for p-SWE. Liver biopsy was considered as the reference standard for liver fibrosis grade. Receiver operating characteristic (ROC) curves and areas under the ROC curves (AUROCs) were cal…
Bioestratigrafía y paleobiología de conodontos del triásico medio del sector oriental de la Península Ibérica.
2009
En los materiales carbonáticos marinos del Triásico de la Península Ibérica se han muestreado 23 secciones, que de Norte a Sur son: en la Cordillera Pirenaica, Usseu, Sant Sebastià, Hostalets-Cadí y Alós de Balaguer; en la Cordillera Costero-Catalana, L'Ametlla, Olessa, Rasquera- Benifallet y Tivissa; en la Cordillera Ibérica, Calanda, Tramacastilla Libros, Henarejos, Moya, Bugarra y Montserrat; en la Cordillera Bética, Espejeras, Calasparra, Canara, Arroyo Hurtado, Valdepeñas de Jaén, Salmerón, Boyar y Cabo Cope.En conjunto para los materiales del Triásico de la Península Ibérica se han identificado doce especies. En el Anisiense: Neogondolella basisymetrica Budurov & Stefanov, Neogondolel…
Dinámica de la paleodiversidad de los Bivalvos del Triásico y Jurásico Inferior.
2009
Los bivalvos son un grupo de invertebrados muy utilizado para el estudio de dinámicas evolutivas, dado que su concha los hace buenos candidatos para la fosilización y son abundantes en el registro fósil. El objetivo de esta tesis es el estudio de la paleodiversidad genérica de los bivalvos marinos en el intervalo Induense (Triásico Inferior) - Sinemuriense (Jurásico Inferior) [In-Sin], que comienza con la recuperación de la extinción del límite Pérmico - Triásico (P/T) y termina con la recuperación de la extinción del Triásico - Jurásico (T/J).En primer lugar, se han eliminado, en la medida de lo posible, los errores de la práctica taxonómica mediante la elaboración crítica de una base de d…
Families of solutions to the KPI equation and the structure of their rational representations of order N
2018
We construct solutions to the Kadomtsev-Petviashvili equation (KPI) in terms of Fredholm determinants. We deduce solutions written as a quotient of wronskians of order 2N. These solutions called solutions of order N depend on 2N − 1 parameters. They can also be written as a quotient of two polynomials of degree 2N (N + 1) in x, y and t depending on 2N − 2 parameters. The maximum of the modulus of these solutions at order N is equal to 2(2N + 1) 2. We explicitly construct the expressions until the order 6 and we study the patterns of their modulus in the plane (x, y) and their evolution according to time and parameters.
On a nonlinear Schrödinger equation for nucleons in one space dimension
2021
We study a 1D nonlinear Schrödinger equation appearing in the description of a particle inside an atomic nucleus. For various nonlinearities, the ground states are discussed and given in explicit form. Their stability is studied numerically via the time evolution of perturbed ground states. In the time evolution of general localized initial data, they are shown to appear in the long time behaviour of certain cases.
El Objetivo 55 y la lucha contra el cambio climático.
2023
En este documento hablo de la lucha contra el cambio climático en la Unión Europea, en concreto, sobre el Objetivo 55. In this document I talk about the fight against climate change in the European Union, in particular Objective 55.
Model based design of electro-hydraulic motion control systems for offshore pipe handling equipment
2014
Doktorgradsavhandling i mekatronikk, Universitetet i Agder, 2014 Despite the fact that hydraulics, in general, is considered a mature technology, design of hydraulic systems still offers a number of challenges for both component suppliers and manufacturers of hydraulically actuated machines such as offshore pipe handling equipment. This type of equipment is characterized by high price, high level of system complexity and low production numbers. It requires a great level of skill and experience to develop the equipment and the focus on production and development costs is constantly increasing. Therefore design engineers continuously have to improve their procedures for decision making regard…
Comparison of Classroom-Based Sedentary Time and Physical Activity in Conventional Classrooms and Open Learning Spaces Among Elementary School Studen…
2021
European children and adolescents spend most of their daily life and especially their school hours being sedentary which may increase their risk for chronic non-communicable diseases later in life. After the curriculum reform of Finnish basic education in 2014, most of the new or renovated comprehensive schools in Finland incorporate open and flexible classroom designs. Their open learning spaces may provide students opportunities to reduce sedentary behavior during school hours. Thus, waist-worn accelerometers were used to assess classroom-based sedentary time (ST), the number of breaks from sedentary time (BST), and physical activity (PA) among cross-sectional samples of 3rd and 5th grade…
Liminaalitilan käsite työn muutosten jäsentäjänä
2013
Liminaalitila on antropologiassa määritelty välitilaksi, kynnyksellä olemiseksi. Liminaalisuus on nykypäivän työelämälle ominainen piirre, joka voi näyttäytyä kaaoksena, mutta myös uutta luovana muutosvaiheena.
Organizational culture as a primary driver for utilizing big data analytics in organizations
2019
Master's thesis Information Systems IS501 - University of Agder 2019 Context:During this last decade we have witnessed a wave of digital disruption, where big data has had a central part. This has gotten many organizations to pay attention and investing in analytic tools for big data. Big data analytics can provide organizations with more knowledge from more data sources that can have a big impact on how organizations act. Many of the organizations that have purchased big data analytics have failed to derive benefits from it and this is demonstratedin the literature. Organizational culture is mentioned as being an important part of achieving success when adopting big data.Purpose: The purpo…