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Control Strategy for a Rigid Ball Trapped between Parallel Plates
(Universitat Politècnica de Catalunya, 2023-06-08)
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This paper provides a control strategy for achieving precise motion control of a rigid ball trapped
between two parallel plates. The model equations provide a driftless system which, after applying
dynamic feedback, is ...
Complex dynamics in a thermosolutal convection loop
(Universitat Politècnica de Catalunya, 2023-06-07)
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We present a study of the dynamics of a heated binary mixture in a loop. For both negative
and positive sign of the separation parameter the system has a rich behaviour, in the first case we
encounter a super-critical ...
Synthetic wave creation
(Universitat Politècnica de Catalunya, 2023-06-04)
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In recent years, the issue of sea level rise and its wide-ranging impacts has
raised significant concern. Modeling beach response ti sea level rise is important
to design adaptation measures but the wave forcing must be ...
Application of the Bubble model on a virtual bronchial tree to analyse tuberculosis lesion spread and growth on macaques
(Universitat Politècnica de Catalunya, 2023-06-04)
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The Bubble model is a mathematical model that aims to recreate the dynamics of a tuberculosis
infection in the lungs. It has proved successful in recreating experimental data in minipigs. Our
objective in this work is ...
Wind tunnel validation of the CFD OpenFOAM environment of the Formula Student team BCN eMotorsport
(Universitat Politècnica de Catalunya, 2023-06-04)
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Introduction to Computational Electromagnetism: simulation and design of a Paul trap
(Universitat Politècnica de Catalunya, 2023-06-04)
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In this paper, we will simulate a Paul’s trap to achieve the confinement of multiple ions using a varying electric field. From
multiple simulations and conditions, we will determine the range of the frequency for which ...
EVM of a cascaded MZM A-RoF transmitter for high order QAM
(Universitat Politècnica de Catalunya, 2023-06-04)
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The paper deals with the transmission of modulated RoF data signals for 16-QAM
and 64-QAM with a cascaded MZM transmitter. Performance according to EVM is later studied
according to VB2 parameter of the transmitter and ...
Experimental ball and beam system
(Universitat Politècnica de Catalunya, 2023-06)
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The ball and beam control system is one of the most used experiments to study and apply different
control techniques. The system can be modeled through a set of nonlinear differential equations that, after
the application ...
High-bandgap silicon-carbon ultrathin films for semitransparent PV devices
(Universitat Politècnica de Catalunya, 2023-06)
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The objective of the project is to optimize ultrathin films of a-SiCx:H for their application in trans parent solar cells. It focues on investigating the correlation between carbon content and bandgap
in a-SiCx:H films. ...
Numerical computation of Black Hole Shadows
(Universitat Politècnica de Catalunya, 2023-05-31)
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The appearance of a black hole when observed from a long distance is a complex problem that
requires a complicated mathematical apparatus. The model is significantly dependent on the particular
type of black hole that ...
XPCS on metallic glasses
(Universitat Politècnica de Catalunya, 2023-05-31)
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It is only in recent years that the study of the microscopic dynamics of metallic glasses (MGs) has
become possible thanks to the advance in X-ray photon correlation spectroscopy (XPCS). This is
precisely the technique ...
Modelling and Designing a Paul Ion Trap
(Universitat Politècnica de Catalunya, 2023-05-28)
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This report describes and discusses the results of simulating the behaviour of ions of the same
sign in a Paul trap. A triangular mesh has been used for the discretization of the geometry, and the
equations modelling the ...
Stochastic modelling of a neuron with the Hodgkin-Huxley model and its equivalent Markov description
(Universitat Politècnica de Catalunya, 2023-05)
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Neurons are excitable cells which display fundamentally stochastic dynamics. In this work, we
provide insights into their behavior and the role of stochasticity in their functioning. Starting from
a conductance-based ...
Implementation of CSRT algorithm for the tracking and monitoring of algae of the Alexandrium species
(Universitat Politècnica de Catalunya, 2023-05)
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Alexandrium is a family of algae with special relevance as it is widely spread around coastal
ecosystems, being some of its species toxic. From its discovery, its global behaviour has been well
studied but to further ...
New solutions for race-track microtron end magnets
(Universitat Politècnica de Catalunya, 2023)
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Race-track microtrons are particle accelerators that consist of an accelerating structure or LINAC
and two semicircular magnets. The created magnetic field forces particles to follow a curved trajectory
with minimal ...
Design and development of experiments with emotional stimulation techniques by means of image and sound to improve the individual's resilience against stress
(Universitat Politècnica de Catalunya, 2023)
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The World Health Organization has defined stress as the "Health Epidemic of the 21st Century". Chronic stress is
found to be one of the main causes of growing numbers of physical chronic diseases. Even though there are ...
Bias field line model for photocurrent in Photoconductive Antennas
(Universitat Politècnica de Catalunya, 2023)
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Photoconductive Antennas (PCAs) are used for the generation of THz radiation using lasers impinging in a gap between electrodes to induce carrier current and subsequently radiated field. The computation of this photocurrent ...
Hydrogen generation by photocatalysis with BiVO
(Universitat Politècnica de Catalunya, 2022-06-11)
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The aim of this work was to study the enhancement in photocatalytic hydrogen production by using BiVO
combined with Si solar cells.
Synchronization of complex-valued chaotic systems
(Universitat Politècnica de Catalunya, 2022-06-01)
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Synchronization is a collective behaviour in a complex dynamical network by which the
trajectories of all its agents converge to a common state due to the inherent coupling between them
plus, in some cases, the existence ...
Electrical characterization of MXenes and their applications on photovoltaic cells
(Universitat Politècnica de Catalunya, 2022-06-01)
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Ti3C2Tx is a particular type of MXene whose electrical properties have been studied.
Specifically, its performance as a hole transport layer (HTL) in an n-type Si photovoltaic cell has
been evaluated and compared to a ...
Measurement of metallic glasses heterogeneities through atomic force microscopy
(Universitat Politècnica de Catalunya, 2022-06-01)
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Characterising metallic glasses has become an important topic in material science. In our work
we measure the fluctuations of the local elasticity in the amorphous alloy vitreloy-4 samples with
different relaxation times ...
Oscillatory regimes in cardiac cells determined by the calcium concentration
(Universitat Politècnica de Catalunya, 2022-06-01)
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Spatial and temporal calcium oscillations within cardiac cells can induce spontaneous excitations
alien to the normal pace of the heart, favouring the appearance of arrhythmias. In this work we
will study the dynamics ...
Experimental magnetic levitation system
(Universitat Politècnica de Catalunya, 2022-06-01)
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In this article it is exposed the study and construction of a magnetic levitation system consisting
of an electromagnet and a steel ball. Three models has been used to simulate the system in Simulink,
Matlab. A full-state ...
Crescentic bars: studying its formation in Castelldefels
(Universitat Politècnica de Catalunya, 2022-06-01)
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Crescentic bars are alongshore rhythmic undulations of sand ridges. Data of a five-camera set
up in Castelldefels Beach, bathymetric surveys and wave data from a buoy was used to run and
validate the morphodynamic model ...
ECG measurements in atypical arm positions
(Universitat Politècnica de Catalunya, 2022-05-31)
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This study presents an alternative way to measure electrocardiogram (ECG) in order to achieve
an easier monitoring of the patient. The idea is to place two electrodes in the left arm and analyse
in which positions good ...
Dynamic Feedback Linearizability of Mobile Vehicles with Active Caster Wheels
(Universitat Politècnica de Catalunya, 2022-05-22)
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In this article, a controller for the non-linear dynamics of a caster wheels vehicle is designed,
using the method of dynamic feedback linearization. Numerical simulations of the performance of
the controller are included
Atomic level simulations of disordered matter
(Universitat Politècnica de Catalunya, 2022-05-22)
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This article presents the results and analysis of classical liquid particle-system simulations and
the physical principles behind them. Starting from a lattice of ordered atoms, a Lennard-Jones
interaction potential and ...
Fundamentals of cell polarity and motility
(Universitat Politècnica de Catalunya, 2022-05)
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Cell polarity is a fundamental characteristic regarding cell motility and division. In this work, first
we analyze polarization from a biological vantage point, namely which are the molecules taking part
on it and how ...
Building a bronchial tree for animal models of Macaques
(Universitat Politècnica de Catalunya, 2022)
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Tuberculosis (TB) is an infectious disease placed among the 10 main causes of death worldwide.
It is estimated that around 30% of the world’s population has been infected with its latent form.
Most TB cases affect the ...
MonteCarlo BER Simulation of Radio Over Fiber Communication Links
(Universitat Politècnica de Catalunya, 2022)
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The performance of a Radio over Fiber (RoF) Communications
Link is analysed taking into account the effect of
impairments such as thermal and shot noise in the receiver
photodetector, non-idealities in the Mach-Zehnder ...
Properties of water and its anomalous behaviour
(Universitat Politècnica de Catalunya, 2022)
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Water is a complex liquid that has unusual behaviours, the most famous being the maximum density at
4ºC. Here in this paper it is reported some of its properties. To do so, molecular dynamics simulations were
carried out ...
Bidirectional optoantenna for radio over ber architectures
(Universitat Politècnica de Catalunya, 2021-06-05)
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This paper proposes an innovative optoantena design, result of the combination of a
laser and photodiode for ber transmission and reception with a dual port full-duplex antenna.
This antenna can operate at di erent ...
The Kuramoto-Sivashinsky equation
(Universitat Politècnica de Catalunya, 2021-06-04)
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The Kuramoto-Sivanshinsky equation is studied thoroughly by numerical integration. The rst
section demonstrates the study's motivation and historical relevance. Rigorous mathematical analy-
sis is made on how to approach ...
Boundary conditions and Rankine-Hugoniot condition in computational acoustics
(Universitat Politècnica de Catalunya, 2021-06-04)
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In this work we derive a procedure that permits the implementation of suitable boundary condi-
tions in the nite volume method for problems in acoustics. Afterwards, we validate the procedure
through numerical experiments ...
Coverage control
(Universitat Politècnica de Catalunya, 2021-06-04)
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The focus of this project is on optimal coverage of a given geographical area by means of sen-
sors. To this aim, we reproduce a dynamic method to locate the sensors. The implementation is
made by gradient descent-based ...
Modelling and designing a Paul ion trap
(Universitat Politècnica de Catalunya, 2021-06-04)
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The present article consists in the modelling an design of a Paul ion trap using the Method of
Moments for numerical integration. Firstly, we have developed some preliminary work with simple
geometries in two and three ...
Bidirectional Speed Estimation Using a Single Asymmetric Encoder Wheel
(Universitat Politècnica de Catalunya, 2021-06-04)
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The aim of this project is to design an asymmetric encoder and develop an algorithm able to
estimate the angular speed and direction of rotation using a single set of slits and detectors. This
proposed algorithm will be ...
Characterization of GEN2 PAMAM dendrimers as ETLs for PV cells
(Universitat Politècnica de Catalunya, 2021-06-04)
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Semiconductor electronic devices are fundamental for technology and speci cally for solar cells.
Their e ciency is crucial for the actual need of renewable energies and the resistance between
semiconductor and metal are ...
Stable Radio Frequency Dissemination With Phase Conjugation
(Universitat Politècnica de Catalunya, 2021-06-04)
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Fiber-optic frequency transfer is a promising option for stable and long-distance radio frequency
(RF) transmission. This paper consists on a proposed operation principle and simulation of a stable
frequency dissemination ...
M81 Extragalactic nova explosions
(Universitat Politècnica de Catalunya, 2021-06-04)
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Using data from the Joan Oró telescope (located in Montsec, Catalonia) and the reference catalogue from Max Planck Institute, we will observe the evolution of different novae in the M81 galaxy.
This article explains the ...
Terminal Control Of A 2-Link Robot Manipulator
(Universitat Politècnica de Catalunya, 2021-06-04)
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This paper describes a comparative evaluation of different
controllers for a position regulation 2-link robot
manipulator. The equation of motion for two link robot
is a nonlinear di erential equation. The controllers,
namely ...
Simulation of a model of gap junction conductance plasticity
(Universitat Politècnica de Catalunya, 2021-06-04)
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Gap Junction channels between adjacent cells are key in order to perform cell-to-cell communicative
tasks. [3] In this article, gap junction dynamics are modelled as a function of inter cellular
voltage potential, ...
Frequency chirp reduction in Mach-Zehnder modulators
(Universitat Politècnica de Catalunya, 2021-06-04)
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We present our study of the Mach-Zehnder modulator (MZM) and the transmission of pure
tone radiofrequency signals through an optical ber link. Our results show that the detected signal
at the receiver vanishes at a speci ...
Transition to turbulence in Taylor-Couette flow
(Universitat Politècnica de Catalunya, 2021-06-04)
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The document hereby presents the results during the study of Taylor-Couette
ow patterns and
their transition to a turbulent regime, computed using numerical methods with the code nsCouette.
Successfully, simulations ...
Point to point control design for the three-link planar robot
(Universitat Politècnica de Catalunya, 2021-06-04)
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In this paper we design a control for a planar robot arm with three links in the absence of external
forces. We begin with an introduction to the physical system and develop the equations of motion
from conservation laws. ...
Modelling and Design of a Paul Ion Trap
(Universitat Politècnica de Catalunya, 2021-06-03)
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A Paul ion trap is a device designed to con ne charged particles in a small region of uniform,
dynamic quadrupole potential. The aim of this project is to simulate numerically the distribution of
charges and the potential ...
Path Integral approach to the 2D Ising model through the Worm Algorithm
(Universitat Politècnica de Catalunya, 2021-06-03)
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The aim of this article is to present a Path Integral Monte Carlo method known as the Worm
Algorithm (WA) and analyze its promising performance by studying a particular problem. For this
purpose, the well-known 2D Ising ...
Controller design for point-to-point trajectory generation through feedback linearization of nonlinear control systems
(Universitat Politècnica de Catalunya, 2021-06-02)
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In this paper some of the most common methods of nonlinear control are explored, firstly introducing the theorems and mathematical background upon which they are built, and then exploring their results. Using a solved ...
Control of a Flat System: Tractor With a Steerable Trailer
(Universitat Politècnica de Catalunya, 2021)
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This paper develops and implements a control policy for a tractor with a steerable trailer in a simulated environment.
Starting from the kinematic model of the system, we verify constructively that there exists a prolongation ...
Viscoelastic Fluid Simulation with OpenFOAM
(Universitat Politècnica de Catalunya, 2020-06-20)
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Since non-Newtonian fluids were discovered, their numerous interesting behaviours and potential
uses have been investigated. Particularly, the frequency-dependent properties of wormlike micellar
solutions have risen a ...
Modelling and designing a Paul ion trap
(Universitat Politècnica de Catalunya, 2020-06-20)
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
A Paul trap or quadrupole ion trap is a device designed to confine ions or charged particles in a given
space. It consists of four electrodes that produce electric fields varying in time. The voltage applied to these
electrodes ...
Optical sideband selection in Optical IQ modulators driven by RF tones
(Universitat Politècnica de Catalunya, 2020-06-19)
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
This paper deals with IQ modulation using the nested Mach-Zehnder modulator, studying its
different parameters and the effect of their value in the resulting signal. The main goal is to obtain
the parameters for which a ...
Health care system dynamics modelization for covid-19
(Universitat Politècnica de Catalunya, 2020-06-19)
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
The COVID-19 pandemic has had a major impact
worldwide and the health care systems have had to adapt
to a new challenging and alarming situation. In this
paper, a compartment model that adjusts the hospital
dynamics ...
Simulation for fiber optics pulse propagation through a numerical solution of the Nonlinear Schrödinger Equation
(Universitat Politècnica de Catalunya, 2020-06-19)
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
Fiber pulse propagation is a common scenario in optical experiments. This article is a numerical
simulation of such propagation using the split-step Fourier method with a brief discussion on its
effects. To conclude, ...
Dual-band antennas in CST Studio Suite
(Universitat Politècnica de Catalunya, 2020-06-19)
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The aim of this report is to learn about dual-band antennas, and carry out electromagnetic
simulations of pre-designed antennas using CST Studio Suite, a commercial software. We will
replicate the structural models of ...
Nonlinear control-based robust voltage regulation of a magnetically coupled multiport dc-dc power converter for automotive applications
(Universitat Politècnica de Catalunya, 2020-06-19)
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
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This paper presents two different control strategies to regulate the output voltage of a magnetically
coupled multiport dc-dc converter aimed at automotive applications. The two models, a feedback
linearizing and an ...
A graphical simulator of Covid-19
(Universitat Politècnica de Catalunya, 2020-06-19)
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
In this project, we have built a simulator that replicates the spread of a coronavirus-like infectious
disease, with the aim of making an educational, user-friendly application that allows people to learn
the basics of ...
Simulation of electromagnetic fields of Terahertz Antennas using CST StudioTM
(Universitat Politècnica de Catalunya, 2020-06-19)
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
The so-called `terahertz gap', which ranges from 0.3 to 10 THz, is the last span within the
whole electromagnetic wave spectrum that has not been technologically or commercially developed.
This frequency range has ...
Global analysis of Covid-19 in Europe
(Universitat Politècnica de Catalunya, 2020-06-19)
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
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In this paper we present the work carried out by
UPC's Computational Biology and Physics departments
(among others) to estimate and track the state of
the pandemic through an empirical model and how we
have collaborated ...
Modified SEIR model for COVID-19 outbreak in Spain
(Universitat Politècnica de Catalunya, 2020-06-19)
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
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Assignatura: PROJECTES D'ENGINYERIA FÍSICA 2 - 230477
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) outbreak has been ongoing
for over 5 months now and has spread to nearly every country in the world from its initial outbreak
in Wuhan, China. Europe, ...