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Recuperació d’una xarxa d’instrumentació i observació marítima al litoral català

  • Cusó i Giner, Oriol
L’any 2009, Catalunya gaudia d’una xarxa d’instrumentació marítima anomenada XIOM, la qual va ser desmantellada per motius econòmics. En aquest treball es planteja una proposta per tal de recuperar una nova xarxa d’instrumentació marítima al litoral català. Per fer-ho, s’estudiarà les xarxes marítimes d’altres països per esbrinar la seva morfologia, el seu funcionament o la seva gestió administrativa, entre d’altres. També es farà una comparació amb el suport que reben altres xarxes instrumentals terrestres en l’àmbit regional. A més a més, es valorarà possibles sectors els quals sortirien beneficiats d’aquest servei i es farà circular una enquesta amb d’intenció de valorar el coneixement general de la població sobre els sistemes d’instrumentació marítima i a la vegada conscienciar de la necessitat d’aquests. Per acabar es farà una proposta per a la nova xarxa mitjançant un estudi del litoral català per tal de trobar zones òptimes per a la ubicació dels punts de mesura. Finalment es calcularà una aproximació del cost de la instal·lació i el manteniment d’aquesta nova xarxa marítima., En el año 2009, Cataluña disfrutaba de una red de instrumentación marítima llamada XIOM, la cual fue desmantelada por motivos económicos. En este trabajo se plantea una propuesta para recuperar una nueva red de instrumentación marítima en el litoral catalán. Para hacerlo, se estudiará las redes marítimas otros países para averiguar su morfología, su funcionamiento o su gestión administrativa, entre otros. También se hará una comparación con el apoyo que reciben otras redes instrumentales terrestres en el ámbito regional. Además, se valorará posibles sectores los cuales saldrían beneficiados de este servicio y se hará circular una encuesta con de intención de valorar el conocimiento general de la población sobre los sistemas de instrumentación marítima y a la vez concienciar de la necesidad de estos. Para terminar se hará una propuesta para la nueva red mediante un estudio del litoral catalán para encontrar zonas óptimas para la ubicación de los puntos de medida. Finalmente se calculará una aproximación del coste de la instalación y el mantenimiento de esta nueva red marítima., In 2009, Catalonia had a network of maritime instruments called XIOM, which was dismantled for economic reasons. In this paper, a proposal is raised in order to deploy a new maritime instrumentation network in the Catalan coast. To do this, the maritime networks of other countries will be studied to understand their morphology, operations or administrative management, among other topics. A comparison will also be made with the support received by other terrestrial instrumental networks at regional level. In addition, industries which would benefit from this service will be assessed and a survey will be circulated to understand the general knowledge of the population on maritime instrumentation systems and at the same time raise awareness of the need for such systems. Finally, a proposal for the new network will be made through a study of the Catalan coast in order to find optimal areas for the location of the measurement points. Additionally, an estimate of the cost of the installation and maintenance of this new maritime network will be performed.

Analysis and prediction of COVID-19 for EU-EFTA-UK and other countries

  • Català Sabaté, Martí
  • Cardona Iglesias, Pere Joan
  • Prats Soler, Clara
  • Alonso Muñoz, Sergio
  • Álvarez Lacalle, Enrique
  • Marchena Angos, Miquel
  • Conesa Ortega, David
  • Echebarría Domínguez, Blas
  • López Codina, Daniel
The present report aims to provide a comprehensive picture of the pandemic situation of COVID-19 in the EU countries, and to be able to foresee the situation in the next coming days. We provide some figures and tables with several indexes and indicators as well as an Analysissection that discusses a specific topic related with the pandemic. As for the predictions, we employ an empirical model, verified with the evolution of the number of confirmed cases in previous countries where the epidemic is close to conclude, including all provinces of China. The model does not pretend to interpret the causes of the evolution of the cases but to permit the evaluation of the quality of control measures made in each state and a short-term prediction of trends. Note, however, that the effects of the measures’ control that start on a given day are not observed until approximately 7-14 days later. We show an individual report with 8 graphs and a summary table with the main indicators for different countries and regions. We are adjusting the model to countries and regions with at least 4 days with more than 100 confirmed cases and a current load over 200 cases., These reports are funded by the European Commission (DG CONNECT, LC-01485746) PJC and MC received funding from “la Caixa” Foundation (ID 100010434), under agreement LCF/PR/GN17/50300003; CP, DL, SA, MC, received funding from Ministerio de Ciencia, Innovación y Universidades and FEDER, with the project PGC2018-095456-B-I00

Simulation of COVID-19 propagation scenarios in the Madrid metropolitan area

  • Singh, David E.
  • Marinescu, Maria Cristina
  • Guzmán Merino, Miguel
  • Durán, Christian
  • Delgado Sanz, Concepción
  • Gómez Barroso, Diana
  • Carretero Pérez, Jesús
This work presents simulation results for different mitigation and confinement scenarios for the propagation of COVID-19 in the metropolitan area of Madrid. These scenarios were implemented and tested using EpiGraph, an epidemic simulator which has been extended to simulate COVID-19 propagation. EpiGraph implements a social interaction model, which realistically captures a large number of characteristics of individuals and groups, as well as their individual interconnections, which are extracted from connection patterns in social networks. Besides the epidemiological and social interaction components, it also models people's short and long-distance movements as part of a transportation model. These features, together with the capacity to simulate scenarios with millions of individuals and apply different contention and mitigation measures, gives EpiGraph the potential to reproduce the COVID-19 evolution and study medium-term effects of the virus when applying mitigation methods. EpiGraph, obtains closely aligned infected and death curves related to the first wave in the Madrid metropolitan area, achieving similar seroprevalence values. We also show that selective lockdown for people over 60 would reduce the number of deaths. In addition, evaluate the effect of the use of face masks after the first wave, which shows that the percentage of people that comply with mask use is a crucial factor for mitigating the infection's spread., This work has been supported by the Spanish Instituto de Salud Carlos III under the project grant 2020/00183/001 Medium and long-term forecast of the spread of COVID-19, the project grant BCV-2020-3-0008 Simulating COVID-19 propagation at a European-level of the Spanish Supercomputing Network (RES), and the EU project ‘ASPIDE: Exascale Programming Models for Extreme Data Processing under grant 801091., Peer Reviewed

Improving the BeagleBone board with embedded Ubuntu, enhanced GPMC driver and Python for communication and graphical prototypes

  • González Muñoz, Rubén
BeagleBone is a low price, small size Linux embedded microcomputer with a full set of I/O pins and processing power for real-time applications, also expandable with cape pluggable boards. The current work has been focused on improving the performance of this board. In this case, the BeagleBone comes with a pre-installed Angstrom OS and with a cape board using a particular software “overlay” and applications. Due to a lack of support, this pre-installed OS has been replaced by Ubuntu. As a consequence, the cape software and applications need to be adapted. Another necessity that emerges from the stated changes is to improve the communications through a GPMC interface. The depicted driver has been built for the new system as well as synchronous variants, also developed and tested. Finally, a set of applications in Python using the cape functionalities have been developed. Some extra graphical features have been included as example.

Relevance between the degree of industrial competition and fair value information: study on the listed companies in China

  • Zhuang, Xuemin
  • Luo, Yonggen
Purpose: The purpose of this article is to study whether there exists natural relationship between fair value and corporate external market. A series of special phenomenon in the application of fair value arouses our research interests, which present evidences on how competition affects the correlation of fair value information. Design/methodology/approach: this thesis chooses fair value changes gains and losses and calculate the ratio of DFVPSit as the alternative variable of the fair value. In order to effectively inspect the mutual influence between the degree of industry competition and the value relevance of fair value, and reduce the impact of multi-collinearity, we built a regression model on the hypothesis, which supposes that if other conditions are the same, the fair value information has greater value relevance if the degree of the industry competition is greater. To test the hypothesis, we use the comparison of the DFVPSit coefficient absolute value to judge the value relevance of fair value information, and the greater the absolute value is, the higher relevance between the changes in fair value per share profits and losses with the stock prices. Findings: The higher the degree of competition in the industry is, the more fair value information relevance is. Also, there are evidences representing that fair value information often presents negative correlation with the stock price.Originality/value: The main contribution of the article is to show that not only need we make the formulation and implementation of the high quality of fair value accounting standards to suit for both the national conditions and international practice, but also need we further to improve the company's external governance mechanism to promote fair value’s information correlation., Peer Reviewed

Acceso a servicios de saneamiento y al agua potable: de 2000 a 2010 en la Riviera Maya (Cozumel y Playa del Carmen), Quintana Roo, México

  • Rojas López, Justo
  • Frausto Martínez, Oscar
  • Tun Chim, Javier
  • Ihl, Thomas
Entre las Metas del Milenio suscritas en el año 2000 está el reducir la falta de acceso al agua potable y el saneamiento. Las ciudades del norte de Quintana Roo, México, se han enfrentado a crecimientos poblacionales que retan la provisión de estos servicios urbanos. Es por ello que, este trabajo mide la provisión del agua potable y del saneamiento urbano para los últimos 10 años en las ciudades de Cozumel y Playa del Carmen junto con la intensidad de las presiones demográficas, a fin de verificar si han sido capaces de proveer estos servicios, a la vez de, evaluar si existen avances en las Metas del Milenio. Los resultados muestran que las ciudades tienen niveles diferentes de provisión, al inicio del periodo de estudio Cozumel muestra incidencias sobre el 90%, sin embargo, al pasar el tiempo Playa del Carmen emprende un crecimiento hasta igualar o mejorar la cobertura de Cozumel., Between the Millenium Goals signed in the year 2000 one isto reduce the lack of access to the drinkable water and its treatment. The cities of the north of Quintana Roo, Mexico have faced high population growths, which challenge the provision of the se urban basic services. Therefore, this work measures the provision of the drinkable water and of the urban treatment for the last 10 years in Cozumel and Playa del Carmen, together with the intensity of the demographic pressures that these suffered, in order to check if they have been capable of providing with efficiency these basic services to his citizens, simultaneously of evaluating if there is advances in the context of the Millenium Goals. The results show that the cities have different levels of provision of these services. In the beginning of the period of study Cozumel shows the best results, in most cases incidents on 90 percent, nevertheless, when the time spends Playa del Carmen undertakes a growth in a pace accelerated up to being equal orto improve Cozumel's coverage., Peer Reviewed

Correlation between traffic granularity and defragmentation periodicity in elastic optical networks

  • Sayyad Kodashenas, Pouria
  • Comellas Colomé, Jaume
  • Perelló Muntan, Jordi
  • Spadaro, Salvatore
While elastic optical network technologies have emerged as promising solutions for future ultra-high-speed optical transmission, the unavoidable spectral fragmentation problem that appears in such networks significantly degrades their performance. In light of this, spectral defragmentation technologies have been introduced in elastic optical networks, aiming to increase the spectrum utilisation. During the defragmentation operation, the available fragmented spectrum bands are consolidated by reallocating existing connections, either re-routing them along alternative routes and/or re-tuning them onto different spectrum portions. Obviously, spectral defragmentation increases network complexity and cost. Therefore, it is highly desirable to limit its application as much as possible, while keeping network performance within acceptable margins. In this paper, we focus on analyzing the correlation between the optimal (i.e. minimum) spectrum defragmentation periodicity in the network with the granularity of the supported traffic. For this purpose, we initially introduce a novel algorithm for efficient spectrum defragmentation. The proposed algorithm aims to consolidate the available fibre spectrum as much as possible, while limiting the number of reallocated active connections. Then, supported on extensive simulation results, we show how spectral defragmentation periodicity can be effectively configured by having knowledge of the offered traffic granularity., Peer Reviewed

A theoretical multiscale treatment of protein-protein electron transfer: the ferredoxin/ferredoxin-NADP+ reductase and flavodoxin/ferredoxin-NADP+ reductase systems

  • Saen-oon, Suwipa
  • Cabeza de Vaca, Israel
  • Medina, Milagros
  • Guallar, Victor
In the photosynthetic electron transfer (ET) chain, two electrons transfer from photosystem I to the flavin- dependent ferredoxin-NADP+ reductase (FNR) via two sequential independent ferredoxin (Fd) electron carriers. In some algae and cyanobacteria (as Anabaena), under low iron conditions, flavodoxin (Fld) replaces Fd as single electron carrier. Extensive mutational studies have characterized the protein–protein interaction in FNR/Fd and FNR/Fldcomplexes.Interestingly,eventhoughFd and Fldsharethe interaction site on FNR,individual residueson FNR do not participate to the same extent in the interaction with each of the protein partners, pointing to different electron transfer mechanisms. Despite of extensive mutational studies, only FNR/Fd X-ray structures from Anabaena and maize have been solved; structural data for FNR/Fld remains elusive. Here, we present a multiscale modelling approach including coarse-grained and all-atom protein–protein docking, the QM/MM e-Pathway analysis and electronic coupling calculations, allowing for a molecular and electronic comprehensive analysis of the ET process in both complexes. Our results, consistent with experimental mutational data, reveal the ET in FNR/Fd proceeding through a bridge-mediated mechanism in a dominant protein–protein complex, where transfer of the electron is facilitated by Fd loop-residues 40– 49. In FNR/Fld, however, we observe a direct transfer between redox cofactors and less complex specificity than in Fd; more than one orientation in the encounter complex can be efficient in ET., Work was supported by computational time from the Barcelona Supercomputer Center and funds from theSpanishMinistry ofEconomy and Competitiveness through the projects CTQ2013-48287 (to V.G.) and BIO2013-42978-P (to M.M.) and a Beatriu de Pinos grant BP-B-00252 from the Catalan Government (to S.S.)., Peer Reviewed

Disseny d'un perfil d'hidrofoil per a esports aquàtics

  • Camps Dadaña, Carles
El “Disseny d’un perfil d’hydrofoil per a esports aquàtics” és un projecte que s’inicia gràcies a l’interès per la mecànica de fluids, i tots els fenòmens relacionats amb els efectes que produeix un perfil al moure’s a través d’un fluid. L’estudi d’aquests fenòmens es duran a terme amb programes d’ordinador que permeten el disseny i la simulació El treball en concret es focalitza en un cas concret, l’anomenat hydrofoil (o hidroaleta) que és un perfil alar, molt semblant a les ales dels avions, que en aquest cas treballa a sota l’aigua, per produir un efecte de sustentació a les embarcacions o vehicles a la que va construïda. Aquest hydrofoil té moltes aplicacions, i en aquest treball s’estudia concretament la utilització en esports aquàtics com el kitesurf o el wakeboard, que són variants de surf, on l’objectiu és mantenir l’equilibri a sobre una taula que llisca sobre l’aigua, propulsat per una llanxa motora o un parapent. La funció de l’hydrofoil, és mantenir aquesta taula i a la persona, una altura per sobre el nivell de l’aigua suficient per evitar les pertorbacions de les onades i la fricció amb la superfície de l’aigua. Aquest projecte es basa en estudiar a nivell computacional el que succeeix amb un cas particular d’aquests perfils per comprovar que la força de sustentació que aporta l’hydrofoil és suficient per mantenir el surfista a una certa altura respecte la superfície de l’aigua.

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