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\title{\textbf{Ecodep Conference 2021,\\ September 15-17, 2021 }\\ 	{\small \url{http://doukhan.u-cergy.fr/ecodep.html}}}
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\author{{Paul Doukhan}}

\affil{{\small  Paris Seine University, AGM UMR 8088, CYU site Saint-Martin,
		95000 Cergy-Pontoise, France}
		\\ 
		 \url{http://doukhan.u-cergy.fr/conference2021.html}}

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	\maketitle
	

The conference  will be totally free but \href{https://docs.google.com/forms/d/e/1FAIpQLSeag2a9jkFnBdvxxa0GBEgO1mkaB64QKpfPe9WFlEXFzZStdQ/viewform}{\bf registration} is mandatory. 
	Indeed the specific point is that both online and physical presence are possible entails to be precise about registrations.
	
	Please register as soon as possible, other informations about AGM may be consulted online  \href{https://cyagm.cyu.fr/ecodep-activities}{https://cyagm.cyu.fr/ecodep-activities}.
	
	\textcolor{red}{ Since the conference is not only online we suggest the link \href{https://www.traveldoc.aero/}{https://www.traveldoc.aero/} to determine wether you are allowed to travel to the conference place.} \\ After/During all this pandemic time our idea was to propose a real physical conference so that the organisation committee will do his very best to welcome you in the best conditions if your institution allows for it.
                       
	
		
	%	   \centerline{ \textcolor{red}{ \bf For technical reasons, the number of online registrations will be limited to 100.}}


%\subsection{Scientific Program}
	Six sessions of around  3 hours   will aim at  organising  adequate orientations of the project \href{http://doukhan.u-cergy.fr/ecodep_abstract.html}{ECODEP}.
       One of the session will be include posters, each poster may be presented with a few slides in the conference room. 
       
       \textcolor{orange}{The conference will be online and physical: one may attend the talk  through a link to be found  on the  ecodep calendar in the homepage \url{https://doukhan.u-cergy.fr/conference2021.html} %{https://doukhan.u-cergy.fr/conference2021.html}
        of the conference.}%\href{https://calendar.google.com/calendar/embed?height=620&wkst=2&bgcolor=%2333B679&ctz=Europe%2FParis&src=cmxlbDFtcWxmM3U2djZ0NWZoaDkyaGUxamdAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ&color=%230B8043&mode=AGENDA&showTitle=0&showNav=1&showDate=0&showPrint=0&showTabs=1&showCalendars=1&showTz=1&hl=en}{Ecodep Schedule}
          
	\
	
	\
	
   \tableofcontents

  %  	\section{Organisation}	
	
        %   \newpage 
                         
   \newpage                                     
                         \section{Schedule}
                                                  Paris Time is indicated and the duration of talks does include questions. \\ 
                                                  The online abstracts book version will be updated and will include the correct information.
                                                \begin{itemize} 
                                                  \item September 15
                                                  \begin{itemize}  \item Morning
                               \begin{itemize}  
                                  \item  9:30-10:00     \quad\; {\bf  Coffee}.   
                                \item 10:00-10:40    \quad{\bf Hansjoerg Albrecher} \textcolor{magenta}{(online)}.\\  Asymptotic analysis of the Greenwood statistic and extensions for very heavy tails.                   
			  \item 10:40-11:20 \quad  {\bf F\'elix Cheysson}. \\
	                        Evolution of groups at high risk of death from Covid-19 using hospital data.                       
             \item 11:20-12:00  \quad{\bf   Xiequan Fan} \textcolor{magenta}{(online)}.\\ Self-normalized Cramer moderate deviations for a supercritical Galton-Watson process.     

	                         \item   12:00-12:50   \quad  {\bf Gennady Samorodnitsky} \textcolor{magenta}{(online)}.\\	Scaling and Taylor's law for heavy tailed observations
(jointly with Joel Cohen and Richard Davis).
	                      
	                            \end{itemize}                    
 \item  Afternoon%\qquad \qquad Moderator {\bf Yahia Sahli}
  \begin{itemize}  
                                \item 15:00-15:40 \quad {\bf Tran  Chi}.\\
                                  Time reversal of the spin alprocess for a population model with competition and environmental change.
                                  
                             
                                  \item  15:40-16:20\quad {\bf Julien Randon Furling}. \\ On the convex hull of certain stochastic processes.
                                 \item 16:20-17:00\quad {\bf Isidora Avila} 			 \textcolor{magenta}{(online)}.    \\ Alteration of coastal productivity and artisanal fisheries interact to affect a marine food web.   \smallskip 
	                      \item 17:00-18:00 \ \quad {\bf Poster session}:\begin{itemize}  
	                       \item Nawel Aries (CDER \& University Boum\'edienne, Algiers)  
	                    	              
	                       \item Natalia Bahamonde (PUCV, Valparaiso)
	                       \item Hugo Bernard (ENSAI), 
	                        \item Guillaume Franchi (ENSAI). 
	                         \item Branda Goncalves (LPTM, CYU, Cergy). 	  
	                       %   \item Jos\'e Gregorio Gomez  (AgroParistech, Paris). 	
	                         \item Louis Lebecq \& Jean-Baptiste Roux (UBS, Vannes)
	                       \item Frederico Maddanu (University of Rome Tor Vergata) 
    \item Laurence Reboul (University of Marseille) 
	                      
                 \end{itemize}     
                
	                       \item 18:00-20:00 \quad {\bf Welcome cocktail}.
	                 
	                        \end{itemize}  
  \end{itemize}  
              
                            
 \item September 16
  \begin{itemize}   \item Morning %\qquad \qquad Moderator {\bf Lionel Truquet}
                              
                              \begin{itemize}  
                            \item  9:30-10:00     \qquad {\bf  Coffee}.                                             
			  \item 10:00-10:40  \quad\; {\bf  Pierre Alquier} \textcolor{magenta}{(online)}. \\ Tight Risk Bound for High Dimensional Time Series Completion (jointly with Nicolas Marie, Am\'elie Rosier).
			   
	                        \item 10:40-11:20   
	                        \qquad {\bf Benjamin Poignard} \textcolor{magenta}{(online)}.   \\  Sparse Factor Models: Asymptotic Properties (jointly with Yoshikazu Terada). 
	                                          
	                    \item 11:20-12:00  \qquad  {\bf Denys Pommeret}.\\ $K$-sample test of copulas. 
	                   
			    \item 12:00-12:40 \quad       \quad {\bf Julien Chiquet}.  \\
			  The Poisson-Lognormal Model as a Versatile Framework for the Joint Analysis of Species Abundances (jointly with Mahendra Mariadassou, St\'ephane Robin).  
			          \end{itemize}    
	   %\newpage                              
	                             \item  Afternoon%\qquad \qquad Moderator {\bf Yahia Sahli}
  			\begin{itemize}  
                                       \item 15:00-15:40   \quad 
                                       {\bf Victor de la Pena} \textcolor{magenta}{(online)}.\\    Unbiased estimation of  the Gini index. 	                    
	                    \item 15:40-16:20 \quad {\bf Imma Valentina Curato} \textcolor{magenta}{(online)}.\\  Inheritance of strong mixing and
	                    weak dependence under renewal sampling.
	                  %  \item 16:20-17:00 \quad {\bf Pause.} 
                                     \item  16:20-17:00 \quad {\bf  J\"uri Lember}  \textcolor{magenta}{(online)}.\\ Viterbi path and training with (Bayesian) HMM. 
                                   \item  17:00-17:40
                              \ \ \  {\bf Chris Watkins}  \textcolor{magenta}{(online)}. \\
                                Making Sex Tractable: an evolutionary model with detailed balance (jointly with J\"uri Lember and Jenny Poulton).
                                  
                                    
	                       \item 20:00 \quad \ \qquad \ {\bf Conference dinner:}  \href{https://www.tripadvisor.fr/Restaurant_Review-g187147-d1587258-Reviews-L_Entracte_des_Gobelins-Paris_Ile_de_France.html}{L'Entracte des Gobelins} (please register). \end{itemize}
	                         \end{itemize}  
% \newpage              
	                        \item September 17
	                          \begin{itemize}   \item Morning  %\qquad \qquad Moderator {\bf Lionel Truquet}
                              
                              \begin{itemize}  
                                 \item  9:30-10:00     \quad\; {\bf  Coffee.}   
                            \item  10:00-10:40     \quad{\bf  Lionel Truquet}. \\
                            Multivariate binary time series models for absence/presence data in ecology.
                               \item 10:40-11:20 \quad {\bf Michael Neumann} \textcolor{magenta}{(online)}.\\
                            Bootstrap for integer-valued GARCH$(p,q)$ processes.         
                            \item 11:20-11:30 Pause.   
			 
			 
			 \item 11:30-12:10\quad {\bf Catherine Aaron}. \\ Local Convex Hull density, support and level set estimation (jointly with Ricardo Fraiman).          
			  \item 12:10-13:00 \quad  {\bf Adam Jakubowski}. \\ Phantom distribution functions for maxima on random trees.
           
             %                      \item 12:00-12:40 \quad       {\bf Anne Philippe}.	
                                %   {\bf Cl\'ementine Prieur} \textcolor{magenta}{(online)}.  \\  Data-driven stochastic inversion via functional quantization - Application to automative depollution.                     
	                     
			  
	                 
	                     	                 
	                       	                      
	                            \end{itemize}    

  \item  Afternoon%\qquad \qquad Moderator {\bf Yahia Sahli}
  			\begin{itemize}  
                                \item 14:40-15:20     \quad      {\bf Leonardo Videla} 		 \textcolor{magenta}{(online)}.   
                                   \\ Stochastic persistence of ecological communities driven by L\'evy noise.                             
                                  \item  15:20-16:10  \quad    {\bf Enrique Cabana} \textcolor{magenta}{(online)}. \\ Discrete random SIR models for the Covid-19 pandemic in Uruguay.
                                   \smallskip 
                                     \item 16:10-17:00         
	                        \quad 	                
			    {\bf Jo\"el  E. Cohen} \textcolor{magenta}{(online)}. \\
                                COVID-19 cases and deaths in the United States, Taylor's law of fluctuation scaling, and heavy tails.      \end{itemize}  

    \end{itemize}   \end{itemize}  

	                     
          \newpage          	
	
 
 \section{Abstracts}	

% \begin{enumerate} 
 \begin{itemize} 
\item {\bf Catherine Aaron} (University of Clermont Auvergne).\\
{\it Local Convex Hull density, support and level set estimation.}
\smallskip

In "A local nearest-neighbor convex-hull construction of home ranges and utilization distribution", Getz and Wilmer proposed an algorithm for home range and utilization distribution (core area) estimation.  We aim to theoretically study this method. With Olivier Bodart, in 2016 we proved that the home range (support) estimator is consistent (and minimax when regularity conditions are satisfied). More recently, we proved, with Ricardo Fraiman, that the core area (level set) estimator has to be slightly modified to achieve minimax rates. In the talk we will present the initial algorithm, the proposed modifications, why they are expected to improve the initial method and the associated asymptotic results.

\item {\bf Hansjoerg Albrecher} (HEC, Lausanne).
\\
{\it Asymptotic analysis of the Greenwood statistic and extensions for very heavy tails.}
\smallskip

We revisit and unify the asymptotic analysis of the classical Greenwood statistic comprising the ratio of the sum of squares and the sum squared of independent and identically distributed random variables with regularly varying tails. We discuss some of its application areas and extend the analysis to the situation of arbitrary powers. Finally, we study the robustness of the asymptotic expressions when some of the terms in the statistic are dropped.

\item {\bf Pierre Alquier} (Riken AIP, Tokyo), Nicolas Marie, Am\'elie Rosier.\\
{\it Tight Risk Bound for High Dimensional Time Series Completion.}\smallskip

Initially designed for independent datas, low-rank matrix completion was successfully applied in many domains to the reconstruction of partially observed high-dimensional time series. However, there is a lack of theory to support the application of these methods to dependent datas. In this paper, we propose a general model for multivariate, partially observed time series. We show that the least-square method with a rank penalty leads to reconstruction error of the same order as for independent datas. Moreover, when the time series has some additional properties such as periodicity or smoothness, the rate can actually be faster than in the independent case.

\item {\bf Isidora Avila} (Advanced Conservation Strategies, Santiago).\\
{\it Alteration of coastal productivity and artisanal fisheries interact to affect a marine food web.}\smallskip

Top-down and bottom-up forces determine ecosystem function and dynamics. Fisheries as a top-down force can shorten and destabilize food webs, while effects driven by climate change can alter the bottom-up forces of primary productivity. We assessed the response of a highly-resolved intertidal food web to these two global change drivers, using network analysis and bioenergetic modelling. We quantified the relative importance of artisanal fisheries as another predator species, and evaluated the independent and combined effects of fisheries and changes in plankton productivity on food web dynamics. The food web was robust to the loss of all harvested species but sensitive to the decline in plankton productivity. Interestingly, fisheries dampened the negative impacts of decreasing plankton productivity on non-harvested species by reducing the predation pressure of harvested consumers on non-harvested resources, and reducing the interspecific competition between harvested and non-harvested basal species. In contrast, the decline in plankton productivity increased the sensitivity of harvested species to fishing by reducing the total productivity of the food web. Our results show that strategies for new scenarios caused by climate change are needed to protect marine ecosystems and the wellbeing of local communities dependent on their resources.

This is a joint work with Derek Corcoran, Alejandro P\'erez-Matus, Evie A. Wieters, Sergio A. Navarrete, Pablo A. Marquet \& Fernanda S. Valdovinos.

\item {\bf Enrique Cabana} (Udelar, Montevideo).\\
{\it Discrete random SIR models for the Covid-19 pandemic in Uruguay.}\smallskip

Two models for Covid are discussed: both are discrete, based on Markov chains with random thinnings.
The simpler one adds the effect of vaccination and explores the use of Google mobility records for short-term predictions. The other one exploits the availability of data including the individual histories of Covid-19 patients, during a short initial period of the epidemic. %{https://emcabana.shinyapps.io/Rvac/}.
Both models  can be run in an interactive internet platform, with automatic access to data taken from the epidemic evolution and the vaccination process in Uruguay, \url{https://emcabana.shinyapps.io/Rvac/}.


\item {\bf Joel E. Cohen} (Lab of populations - Rockefeller University \& Columbia, NY).
\\
{\it COVID-19 cases and deaths in the United States, Taylor's law of fluctuation scaling, and heavy tails.}
\smallskip

COVID-19 cases and deaths are reported by primary administrative subdivisions of the US (called "states") and by secondary administrative subdivisions within each state (called "counties"), cumulatively, day by day, since the pandemic began in the US in January 2020. We show that, on day 1 of each of the 15 months from April 2020 through June 2021, the relationship between the variance and the mean of cumulative cases and of cumulative deaths over counties within each state is well approximated by a power-law variance function known in ecology as Taylor's law or Taylor's power law of fluctuation scaling. The upper tails of the empirical distributions of cases and deaths by state suggest the possibility of a heavy-tailed distribution with infinite variance. These observations have practical consequences and may be theoretically interpretable.
\item {\bf Imma Valentina Curato} (Lab of Finance, ULM).\\
{\it Inheritance of strong mixing and weak dependence under renewal sampling.}
\smallskip

Let $X$ be a continuous-time strongly mixing or weakly dependent process and $T$ a renewal process independent of $X$ with inter-arrival times $(\tau_i)$. We show general conditions under which the sampled process $(X_{\tau_i},\tau_i)$ is strongly mixing or weakly dependent. Moreover, we explicitly compute the strong mixing or weak dependence coefficients of the renewal sampled process and show that exponential or power decay of the coefficients of $X$ is preserved (at least asymptotically). Our results imply that essentially all central limit theorems available in the literature for strongly mixing or weakly dependent processes can be applied when renewal sampled observations of the process $X$ are at disposal.

\item 
{\bf Julien Chiquet} (MIA-Paris, Universit\'e Paris-Saclay, AgroParisTech, INRAE, Paris, France).
\\
{\it The Poisson-Lognormal Model as a Versatile Framework for the Joint Analysis of Species Abundances.}
\smallskip

Joint Species Distribution Models (JSDM) provide a general multivariate framework to study the joint abundances of all species from a community. JSDM account for both structuring factors (environmental characteristics or gradients, such as habitat type or nutrient availability) and potential interactions between the species (competition, mutualism, parasitism, etc.), which is instrumental in disentangling meaningful ecological interactions from mere statistical associations. Modeling the dependency between the species is challenging because of the count-valued nature of abundance data and most JSDM rely on Gaussian latent layer to encode the dependencies between species in a covariance matrix. The multivariate Poisson-lognormal (PLN) model is one such model, which can be viewed as a multivariate mixed Poisson regression model. Inferring such models raises both statistical and computational issues, many of which were solved in recent contributions using variational techniques and convex optimization tools. The PLN model turns out to be a versatile framework, within which a variety of analyses can be performed, including multivariate sample comparison, clustering of sites or samples, dimension reduction (ordination) for visualization purposes, or inferring interaction networks. This paper presents the general PLN framework and illustrates its use on a series a typical experimental datasets. All the models and methods are implemented in the {\tt R-}package PLNmodels, available from 
\href{cran.r-project.org}{\tt cran.r-project.org}.

This is a joint work with Mahendra Mariadassou (MaIAGE, Universit\'e Paris-Saclay, INRAE, Jouy-en-Josas, France) and St\'ephane Robin  (MIA-Paris, Universit\'e Paris-Saclay, AgroParisTech, INRAE, Paris \& CESCO, UMR 7204, MNHN, CNRS, UPMC, Paris, France), 

\item {\bf F\'elix Cheysson} (Sorbonne University, Paris).\\
{\it Evolution of groups at high risk of death from Covid-19 using hospital data.}
\smallskip

 In France, death rates due to Covid-19 halved between the beginning and the end of the first wave of the pandemic.
While this diminution can be explained by better knowledge of the disease, better care for the patients, and a slight increase in the proportion of young patients during the second half of the wave, it is not clear whether it is homogeneous for all age groups.
In this talk, we focus on the estimation of death rates for groups at risk from Covid-19.
Rather than arbitrarily building the groups at risk from patients' demographic data, they are estimated using classification trees (CART).
To study the temporal evolution of groups at risk from Covid-19, we introduce statistical tools for the comparison of CART trees derived from the theory of robust estimation.
This allows us to propose a statistical test to determine changes through time in the death rates for each demographic group.
Finally, we illustrate this method on the first wave of the pandemic.

\item {\bf Tran Chi} (Universit\'e Gustave Eiffel, Champs sur Marne).
% {\textcolor{red}{{it 
\\
{\it Time reversal of the spinal process for a population model with
competition and with environmental change.}
\smallskip

We consider a stochastic individual-based population model with
interaction and trait-struc\-ture. The traits evolve through mutations,
and the evolution can be approximated in large population by a
non-linear PDE that admits a non-trivial stationary solution. We can
approximate the stochastic population process by a linear process where
the interactions are frozen, when the population is close to this
stationary measure. This allows us to derive, when the population is
large, the equation satisfied by the ancestral lineage of a uniformly
sampled individual at a fixed time $T$, which is the path constituted of
the traits of the ancestors of this individual in past times $t<T$. We
show that the time reversal of this process solves a simple SDE, that we
derive explicitly in two important cases: for traits driven by drifted
Brownian motions or drifted jump processes.

\item {\bf Xiequan Fan} (Tianjin University).\
{\it Self-normalized Cramer  moderate deviations for a supercritical Galton-Watson process.}\smallskip

Let $(Z_n)_{n\geq0}$ be a supercritical Galton-Watson process. Consider the  Lotka-Nagaev estimator  for the offspring mean. In this paper, we establish self-normalized Cramer type moderate deviations and Berry-Esseen's bounds  for  the Lotka-Nagaev estimator. The results are believed to be optimal or near optimal.

%\item {\bf Jos\'e Gomez} (MIA AgroParisTech, INRAE, Paris),
\item {\bf Oleg Klesov} (KPI, Kiev).\\
{\it  Uniform Strong Law of Large Numbers}\smallskip

 Let $L$ be a collection of indices and $X(l)$ be independent identically distributed random variables.
Given a family $\{A\}$ of finite subsets of $L$, consider the sums $S(A)$ of $X(l) $ with indices belonging to $A$.
Then we search the conditions imposed on random variables and the family of subsets
such that $S(A)/|A|$ has a limit almost surely as $|A|$ grows where $|A|$ means the number of
indices in $A$. The case of convergence in probability does not create difficulties in this setting
in contrast to the almost sure convergence.

 This work is jointly with Yu.V.Bogdanskii.

\item {\bf Adam Jakubowsk}i (Mikolai Kopernikus University, Tor\`un).\\
{\it Phantom distribution functions for maxima on random trees.}
\smallskip

	Let $\big(Q,N,C_1,C_2, \ldots)$ be a random vector, where $N \in \{0,1,2,\ldots,\infty\}$ and $\{C_i\}$ is an i.i.d. sequence of non-negative weights.  Consider the following distributional equation
	\[ R =_{d} \Big( \bigvee_{i=1}^{N} C_iR_i\Big) \vee Q, \tag{$*$},\]
	 with random variables $\{R_i\}$ independent, identically distributed as $R$ and independent of $\big(Q,N,C_1,C_2, \ldots)$. This equation is similar to the higher-order Lindley equation [6].
	 
	 In [5] a minimal/endogenous solution to ($*$) is constructed on a~weighted branching tree and it is shown that $R$ has a power law, i.e. $P\big( |R| > x\big) \sim H x^{-\alpha}$ for some $\alpha > 0$ and $H > 0$.
	 
	 In [1], under slightly stronger assumptions, the power law property is derived by constructing a {\em leading branch} along which the maxima contribute to the tail probabilities. This provides a tool for simulations of the constant $H$.  
	 
	 The idea of [1] motivates the present work. Using methods developed in  [3]  and  [2] , we investigate the existence of a phantom distribution function along a particular branch of a rooted tree (like in the case of integer-valued lattices in [4])  and aim at extending this result to weighted branching trees.
	 	
This is {\em a work in progress}, joint with Paul Doukhan.\smallskip

{\small {\bf References}\\
{[1]} B. Basrak, M. Conroy, M. Olvera-Cravioto and Z. Palmowski, Importance sampling for maxima on trees, ArXiv:2004.08966v2.
\\ 
{[2]}
P. Doukhan, A. Jakubowski and G. Lang, Phantom distribution functions for some stationary sequences,
{\em Extremes},  {\bf 18 (2015)}, 697--725.
\\
{[3]}
A. Jakubowski, An asymptotic independent representation in limit theorems for maxima of nonstationary
random sequences, {\em Ann. Probab.}, {\bf  21 (1993)}, 819--830.
\\ {[4]}
A. Jakubowski, I. Rodionov and N. Soja-Kukie\l a, Directional phantom distribution functions
for stationary random fields, {\em Bernoulli}, {\bf 27 (2021)}, 1028--1056.
\\ 
{[5]}
P.R. Jelenkovi\'c and M. Olvera-Cravioto, Maximums on trees, {\em Stochastic Process. Appl.}, {\bf 125 (2015)}, 217--232.
\\ 
{[6]}
F.I. Karpelevich, M.Ya. Kelbert and Yu.M. Suhov, Higher-order Lindley equations,  {\em Stochastic Process. Appl.}, {\bf 53 (1994)}, 65--96.
}

\item {\bf J\"uri Lember} (University of Tartu).\\
{\it Viterbi path and  training with (Bayesian) HMM.}
\smallskip

Viterbi training (VT) is a computationally cheap parameter learning algorithm in many latent variable models such as hidden Markov models (HMM), mixture models and many others. At every step of iteration of VT, given a a set of parameters, the most likely outcome of latent/nuisance variable is found (Viterbi path in HMM case), and then the parameters are re-estimated. As such, VT can be considered as Maximization-Maximization (MM) algorithm, opposed to Expectation-Maximization (EM) algorithm, where at every step of iteration, the nuisance parameters are integrated out. As a parameter estimation method, VT is often (typically) notoriously wrong. There are several reasons for giving a biased estimate, one of them is lack of so-called asymptotic fixed point property. This leads to an idea of adjusted VT, where the asymptotic bias is taken into consideration.

We then turn to the seemingly unrelated problem of HMM segmentation in Bayesian setup. With priors in parameters in HMM, the model is not any
more an HMM, in fact it has much longer memory and different properties. In particular, Markov property fails and Viterbi algorithm does not work any more and several iterative algorithms should be used instead. We develop EM analogue and also apply above-mentioned MM algorithm. Surprisingly enough, in this setting MM algorithm works very well. This relates the VT to Bayesian setup and gives one more explanation to the bad behavior in parameter estimation.

%\item {\bf Sergio Navarrete} (PUC Santiago de Chile) {\textcolor{purple}{ online talk}.}\\

\item {\bf Michael Neumann} (Lab of Mathematics, Jena).\\
{\it Bootstrap for integer-valued GARCH($p$,$q$) processes.}
\smallskip

We consider integer-valued processes with a GARCH structure and prove 
existence
and uniqueness of a stationary distribution as well as absolute regularity
with exponentially decaying coefficients.
As our main result, we construct a coupling of the original process and its
bootstrap counterpart which implies bootstrap consistency for 
different types of
statistics.
\item {\bf Victor de la Pena} (Lab of Statistics, Columbia, New-York).
\\
{\it Unbiased estimation of  the Gini index.}
\smallskip

In this talk, I will present an  approach to calculate the moments of  the bias of the  Gini index.
%\item {\bf Anne Philippe} (LMJL, Nantes)
\item {\bf Benjamin Poignard} (Riken-AIP, Osaka).\\
{\it Sparse Factor Models: Asymptotic Properties.}
\smallskip

We consider the problem of estimating a factor model based variance covariance matrix when the factor loading matrix is assumed sparse. We develop a penalised Z-estimation framework to handle the identifiability issue of the factor loading matrix while fostering sparsity in potentially all its entries. We prove the oracle property of the penalised Z-estimator for the factor model, that is the penalisation procedure can recover the true sparse support and the estimator is asymptotically normally distributed. The non-penalised loss functions are deduced from the class of Bregman divergence losses, providing new estimators for factor modelling. These theoretical results are supported by empirical studies.

This is a work with Yoshikazu Terada (Osaka University).

\item  {\bf   Denys Pommeret} (ISFA Lyon and Marseille). \\
{\it $K$-sample test of copulas.}\smallskip

Copulas are still extensively studied and used to model the dependence of multivariate observations. Many applications can be found in fields such as energy, environment or ecology. Several authors believe that copula approaches are among the tools all ecologists should be considering for analysis of their data in the 21st century."
In a one-sample case, there are many tests to compare an observed copula to a target copula.
\\
In the two-sample case, R\'emillard and Scaillet (2009) proposed a test to compare two nonparametric copulas, that is to test H0: $C_1 = C_2$ , where $C_1$ and $C_2$ are two copulas observed on two iid samples, which may be paired.
\\
To our knowledge, there is no extension to the $K$-sample case ($K>2$). However, the increasing amount of data requires sometimes more comprehensive analyzes. It is in this sense that we propose an equality test of $K$ copulas simultaneously, when $K$ populations are observed.
We want to test the following hypothesis:  H0: $C_1 = C_2 =\cdots = C_K$ from $K$ iid samples, possibly paired. We obtain the exact asymptotic null distribution of the test statistic and we prove the convergence of the test. The idea of the test is to transform the observations to uniform laws, then to use the decomposition of the density of the copula in an orthogonal  Legendre polynomials basis. Returning to the copula function we obtain what are called copula coefficients which characterize each copula. The test then amounts to simultaneously comparing these coefficients. We provide some illustrations of this method, in particular we suggest a clustering algorithm to classify populations with similar forms of dependence.
\\
{\small{\bf Reference.} \\
Y I Ngounou B, D Pommeret (2020) Nonparametric estimation of copulas and copula densities by orthogonal projections, {\it Arxiv-2010.15351}.}



\item  {\bf  Julien Randon Furling } (University Paris 1, Panth\'eon-Sorbonne).
\\
{\it On the convex hull of certain stochastic processes.}
\smallskip

 L\'evy processes are often used to model animal movement, and the convex hull of such processes is then often taken as a proxy for the so-called home range of the animal (or group of animals). In this talk I will review a range of results on the convex hulls of random walks and L\'evy processes, both in the plane and in higher dimensions, in particular the  expected perimeter length in the planar case, or the expected number of faces on the boundary, expected $d$-dimensional volume, and other geometric properties of these random convex polytopes.
\smallskip


\item {\bf Gennady Samorodnitsky} (Cornell University, Ithaca).\\
{\it Scaling and Taylor's law for heavy tailed observations
(jointly with Joel Cohen and Richard Davis).}
\smallskip

Very scaling laws have been observed in physical and biological applications. One of the best known such laws is the Taylor law, relating the sample mean and the sample variance of observed data. We present a theory explain a number of such scaling laws for heavy tailed observations using both weak limit theorems and large deviations.  
\item  {\bf Lionel Truquet } (ENSAI, Rennes).\\
{\it  Multivariate binary time series models for absence/presence data in ecology.}
\smallskip

To understand the dynamic of vectors with binary coordinates, we develop a mulitvariate probit/logistic time series models.
To fit such models to absence/presence data involving multiple species observed at various observation sites, we consider the situation of panel type data and consider both time-varying and
fixed covariates that can be included in the dynamic. We then consider statistical inference of the parameters of the model using composite and pseudo-likelihood estimator, when both the horizon time and the number of sites grow to infinity.
Asymptotic properties of the estimators are based on some multiparameter versions of  ergodic theorems.

\item {\bf Leonardo Videla} (Instituto de Ingeniería Matemática, Universidad de Valparaíso, Chile).\\
{\it Stochastic persistence of ecological communities driven by L\'evy noise.}
\smallskip

 In this talk we present the basic notion of strong stochastic persistence (SSP) of ecological communities, as developed during the last years by Hening, Nguyen, Benaïm, Schreiber and other researchers. We illustrate some new results in the case of L\'evy-driven Lotka-Volterra SDE, and show a simple application to food-chains with intraspecific competition.
 
 \item  {\bf Chris Watkins} (RHUL, London).\\
{\it Making Sex Tractable: an evolutionary model with detailed balance.}
\smallskip

We introduce a new model of sexual evolution with mutation and selection, a variant of the Moran process, and we discuss its properties.  In this (abstract) model, the stationary (mutation-selection equilibrium) distribution has a simple closed form for multi-locus genomes and arbitrary fitness landscapes. We give examples of exact calculations of statistics of the stationary distribution - and of other properties of the evolutionary process - for various fitness landscapes, for both finite and infinite populations.  As far as we are aware, these calculations can be done differently and more simply for this model than for previous models: we use exact recursions to analyse finite-population stationary distributions, and an argument using the de Finetti representation of an exchangeable breeding process to obtain the limit distribution for infinite populations. 

         We also consider the informational properties of the evolutionary process, and we demonstrate that Hamming codes can be used to increase the amount of information maintained by selection for given mutation-rate and intensity of selection.  We give examples of extensions of the model in which genomes are represented as sets (using a Beta process) and as networks (using node-exchangeable graphs), and show that these more complex models have similar analytical tractability.  
         
         This is a joint work with J\"uri Lember (University of Tartu) and Jenny Poulton (RHUL) 

\end{itemize}
%\end{enumerate}
%\end{document} 

  \newpage
                         \section{Social Program}

                      
                         Beginning such a  program let us  realise two things,\begin{itemize}
                         \item
                          first I should apologise because it is so restrictive but it is necessarily biased;
                          \item 
                           the second point  it to think about the importance of keeping all those incredibly beautiful places which justify thousands times the existence of projects in analogous lines.
                              \end{itemize}
                              \textcolor{blue}{The forthcoming   text is full of links:  click on locations to safely travel during this complicate period.}
                              
                              \
                              
                              
                              
                               The social program    (\footnote{Don't hesitate to help for improving this important feature of the conference.}) will be free:
                             
\begin{itemize}
\item Brazil: \href{https://iguazuargentina.com/en/index}{Iguazu falls}, \href{https://www.google.com/search?q=corcovado&sxsrf=ALeKk00IzVVZnadUcDEKbeCHpnX-J1nP1A:1595531654444&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiLqvbLiuTqAhWfAWMBHZ4qCEEQ_AUoAXoECBcQAw&biw=1280&bih=614}{Rio-Corcovado}, \href{https://www.google.com/search?q=brasil+forest&sxsrf=ALeKk00d8cJXe6Uy6eurWg5163QLIT0tbQ:1595532014928&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjqvuj3i-TqAhX7DWMBHdZCBzsQ_AUoAXoECA0QAw&biw=1280&bih=614}{Amazonia Forests},
\item Chile:
\href{https://www.google.com/search?q=patagonia+chile&tbm=isch&ved=2ahUKEwj4n5qGutnqAhVCYxoKHeavAWIQ2-cCegQIABAA&oq=patagonia+chile&gs_lcp=CgNpbWcQAzICCAAyAggAMgQIABAeMgQIABAeMgQIABAeMgQIABAeMgQIABAeMgQIABAeMgQIABAeMgQIABAeOgQIABBDUPwTWLskYOYnaABwAHgAgAH2AYgBgQmSAQUwLjQuMpgBAKABAaoBC2d3cy13aXotaW1nwAEB&sclient=img&ei=5E4UX_gdwsZp5t-GkAY&bih=614&biw=1280}{Patagonia},
\href{https://www.google.com/search?q=paranal+observatory+antofagasta+region+chile&tbm=isch&ved=2ahUKEwij6MWJutnqAhUP-xoKHZIjACAQ2-cCegQIABAA&oq=paranal+chile&gs_lcp=CgNpbWcQARgAMggIABAHEB4QEzIICAAQBxAeEBMyCAgAEAUQHhATMggIABAFEB4QEzIICAAQBxAeEBMyCAgAEAUQHhATOgYIABAHEB46CAgAEAcQBRAeUOSbB1iZqQdg27cHaABwAHgAgAHJBYgBqBCSAQ0wLjEuMS4xLjAuMS4xmAEAoAEBqgELZ3dzLXdpei1pbWfAAQE&sclient=img&ei=604UX-NGj_ZrkseAgAI&bih=614&biw=1280}{Paranal}, \href{https://www.google.com/search?q=atacama+chile&tbm=isch&ved=2ahUKEwjdubLEutnqAhVQ_4UKHdusD-gQ2-cCegQIABAA&oq=atacama+chile&gs_lcp=CgNpbWcQARgAMgIIADIGCAAQBxAeMgYIABAHEB4yBggAEAcQHjIGCAAQBxAeMgYIABAHEB4yBggAEAcQHjIGCAAQBxAeMgYIABAHEB4yBggAEAcQHjoECAAQEzoICAAQBxAeEBNQ_LgGWNzLBmD43wZoAHAAeACAAc8BiAGjCpIBBTAuNS4ymAEAoAEBqgELZ3dzLXdpei1pbWfAAQE&sclient=img&ei=Zk8UX93uGdD-lwTb2b7ADg&bih=614&biw=1280}{Atacama desert}, \href{https://www.google.com/search?q=valparaiso+chile&tbm=isch&ved=2ahUKEwjo58rBu9nqAhWMIRoKHbYaBUkQ2-cCegQIABAA&oq=valparaiso+chile&gs_lcp=CgNpbWcQAzICCAAyBggAEAcQHjIECAAQHjIECAAQHjIECAAQHjIECAAQHjIECAAQHjIECAAQHjIECAAQHjIECAAQHlCzZFi5e2DCiQFoAHAAeAGAAcILiAGwMpIBCzItMi41LTIuMS4zmAEAoAEBqgELZ3dzLXdpei1pbWfAAQE&sclient=img&ei=bFAUX-iBO4zDaLa1lMgE&bih=614&biw=1280}{Valparaiso}, \href{https://www.google.com/search?q=caleta+portales++leon+de+mar+chile&tbm=isch&ved=2ahUKEwiJ1ITru9nqAhVW_IUKHbTMDZkQ2-cCegQIABAA&oq=caleta+portales++leon+de+mar+chile&gs_lcp=CgNpbWcQAzoECCMQJ1CNIljmS2DWTWgAcAB4AIAB4AKIAfAakgEIMC4xMS41LjGYAQCgAQGqAQtnd3Mtd2l6LWltZ8ABAQ&sclient=img&ei=w1AUX8nmNtb4lwS0mbfICQ&bih=614&biw=1280}{Caleta Portales},

\item China: \href{http://www.mutianyugreatwall.com/en/home}{The great wall}, \href{https://en.dpm.org.cn/}{Peking-Forbidden city}, \href{https://www.google.com/search?q=hong+kong&sxsrf=ALeKk032K05EArU6yWd4oCxUcBUo_zBimw:1595990291070&source=lnms&tbm=isch&sa=X&ved=2ahUKEwihuPSSt_HqAhXuz4UKHRMKAxsQ_AUoAXoECBwQAw}{Hong-Kong},

\item France:
 \href{https://www.google.com/search?q=lyon+gastronomie&tbm=isch&ved=2ahUKEwiJy8ubvdnqAhUU8IUKHa4DC1MQ2-cCegQIABAA&oq=lyon+gastro&gs_lcp=CgNpbWcQARgBMgIIADICCAAyBAgAEB4yBggAEAgQHjIGCAAQCBAeMgYIABAIEB4yBggAEAgQHjIGCAAQCBAeMgYIABAIEB4yBggAEAgQHjoECCMQJzoECAAQQzoFCAAQsQNQnu4BWIKQAmD-oQJoAXAAeACAAckKiAHuIZIBDzAuMS40LjAuMS4xLjEuMZgBAKABAaoBC2d3cy13aXotaW1nwAEB&sclient=img&ei=NlIUX4nYCZTglwSuh6yYBQ&bih=614&biw=1280}{Lyon} (\footnote{Sorry for  reducing the attraction of this beautiful city to food but a social program should include a conference dinner and Lyon is the capital of Gastronomy\dots\\ Let us hope that we can meet physically in this city for a physical event!\\ 
 \textcolor{red}{The Welcome Cocktail on September 15 is for physically present colleagues.}}),
\href{https://www.lesmachines-nantes.fr/en/}{Nantes-Machines de l'Ile},
 \href{https://www.google.com/search?q=paris+plage&tbm=isch&ved=2ahUKEwikpa74vNnqAhVQ0RoKHe7WBRAQ2-cCegQIABAA&oq=+paris&gs_lcp=CgNpbWcQARgIMgQIIxAnMgcIABCxAxBDMgUIABCxAzIECAAQQzIFCAAQsQMyBAgAEEMyBwgAELEDEEMyBwgAELEDEEMyCAgAELEDEIMBMgQIABBDUNQgWNQgYINcaABwAHgAgAHODYgBzg2SAQM4LTGYAQCgAQGqAQtnd3Mtd2l6LWltZ8ABAQ&sclient=img&ei=7FEUX6T_ENCia-6tl4AB&bih=614&biw=1280}{Paris-Plage}, \href{https://oceans.taraexpeditions.org/en/}{Paris-Tara Expedition}, 
\href{https://www.google.com/search?q=vannes+bretagne+vieille+ville&tbm=isch&ved=2ahUKEwinsrCSvdnqAhUZ_RoKHQ60CwUQ2-cCegQIABAA&oq=vannes+bretagne+vieille+ville&gs_lcp=CgNpbWcQAzoCCAA6BAgAEB46BggAEAUQHjoGCAAQCBAeOgQIABAYUMtEWPWCAWC5iwFoBnAAeAKAAbcHiAGHOJIBDTIuNy43LjMuMi4xLjKYAQCgAQGqAQtnd3Mtd2l6LWltZ8ABAQ&sclient=img&ei=IlIUX6eZM5n6a47orig&bih=614&biw=1280}{Vannes}, \href{https://www.cirm-math.com/}{Luminy},
\item Germany: \href{https://www.google.com/search?q=aachen&tbm=isch&ved=2ahUKEwiMt46QwNnqAhVU0IUKHeijBOcQ2-cCegQIABAA&oq=aachen&gs_lcp=CgNpbWcQAzIECAAQQzIFCAAQsQMyBQgAELEDMgUIABCxAzIICAAQsQMQgwEyCAgAELEDEIMBMgIIADICCAAyBQgAELEDMgUIABCxAzoECCMQJ1DwTFjsWmDcYWgAcAB4AIAB0AqIAZEPkgEHNS0xLjAuMZgBAKABAaoBC2d3cy13aXotaW1nwAEB&sclient=img&ei=Q1UUX8yJGNSglwTox5K4Dg&bih=614&biw=1280}{Aachen}, 
\href{https://www.berlin.de/en/attractions-and-sights/3560059-3104052-checkpoint-charlie.en.html}{Berlin}, 
\href{https://www.google.com/search?q=heidelberg&sxsrf=ALeKk01dR6lKPPKQAfmdBwRLbU3aPJ4sWA:1595168014107&source=lnms&tbm=isch&sa=X&ved=2ahUKEwju3tn2v9nqAhXCyYUKHcOBBooQ_AUoAnoECCEQBA&biw=1280&bih=614}{Heidelberg}, 
\href{https://www.hofbraeuhaus.de/en/welcome.html}{Munich-Hofbraeuhaus}, \href{https://www.mfo.de/}{Oberwolfach},

\item Mexico: \href{https://www.museofridakahlo.org.mx/en/}{Mexico-Frida Khalo Museum}, \href{https://www.google.com/search?q=coyoacan&sxsrf=ALeKk00ES9mrLZl8OIVGTqmlsTlWXYxMrQ:1595531859084&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjdx8Cti-TqAhXNDmMBHRMlCz4Q_AUoA3oECBwQBQ&biw=1280&bih=614}{Mexico-Coyoacan},
\item New Caledonia: \href{https://www.google.com/search?q=noumea&sxsrf=ALeKk03ib_Z_T7z76OsYu6iGWr2igMNJUA:1595168367774&source=lnms&tbm=isch&sa=X&ved=2ahUKEwji4qufwdnqAhUD4BoKHWWSBAAQ_AUoAnoECCEQBA&biw=1280&bih=614}{Noum\'ea},

\item Poland: \href{https://www.google.com/search?q=pologne+torun+central+place&tbm=isch&ved=2ahUKEwieyJybh-TqAhVJlBoKHWchDWAQ2-cCegQIABAA&oq=pologne+torun+central+place&gs_lcp=CgNpbWcQAzoECAAQHlCyKliPSWDJTmgAcAB4AIABeYgBqwmSAQQxMi4ymAEAoAEBqgELZ3dzLXdpei1pbWfAAQE&sclient=img&ei=-t0ZX57jPMmoaufCtIAG&bih=614&biw=1280}{Torun}, 
 \href{https://www.polin.pl/en}{Varsaw-Jewish Museum},

\item Spain:  \href{https://www.lapedrera.com/en}{Barcelona-La Pedrera},
\href{https://www.salvador-dali.org/en/museums/figueres/}{Figueras-Dali Museum}, 
\href{https://www.google.com/search?q=+alhambra&tbm=isch&ved=2ahUKEwiH3K-zwNnqAhURhhoKHVlNDN8Q2-cCegQIABAA&oq=+alhambra&gs_lcp=CgNpbWcQAzIHCAAQsQMQQzIECAAQQzICCAAyAggAMgIIADIECAAQQzIECAAQQzICCAAyAggAMgIIAFDbMFjbMGDHQGgAcAB4AIABgAGIAYABkgEDMC4xmAEAoAEBqgELZ3dzLXdpei1pbWfAAQE&sclient=img&ei=jVUUX8fhFJGMatmasfgN&bih=614&biw=1280}{Granada},

\item USA : \href{https://www.google.com/search?q=colorado+canyon+big+bend&tbm=isch&ved=2ahUKEwjn-Y_Np8LxAhUBEhoKHbz2BtIQ2-cCegQIABAA&oq=Colorado+canyon&gs_lcp=CgNpbWcQARgBMgIIADIECAAQHjIECAAQHjIECAAQHjIECAAQHjIECAAQHjIECAAQHjIECAAQHjIECAAQHjIECAAQHjoECAAQQ1D7O1jaUGCIZGgAcAB4AIABnQGIAbwFkgEDNS4ymAEAoAEBqgELZ3dzLXdpei1pbWfAAQE&sclient=img&ei=oO_dYOepA4GkaLztm5AN&bih=712&biw=1438&rlz=1C5CHFA_enFR939FR940}{Colorado}, \href{https://www.google.com/search?q=NYC&tbm=isch&ved=2ahUKEwjrh-7xu9nqAhUBw4UKHVDPDYIQ2-cCegQIABAA&oq=NYC&gs_lcp=CgNpbWcQAzICCAAyAggAMgIIADICCAAyAggAMgIIADICCAAyAggAMgIIADICCAA6BAgjECc6BQgAELEDOgQIABBDUOTnAljziANgv5QDaABwAHgAgAGJA4gBtgeSAQcwLjEuMC4ymAEAoAEBqgELZ3dzLXdpei1pbWfAAQE&sclient=img&ei=0lAUX-vWDIGGlwTQnreQCA&bih=614&biw=1280}{New York City},

\item Venezuela: \href{https://www.google.com/search?q=delta+orinoco&sxsrf=ALeKk02UbHjNZZEVLOQG1cG1CNmR-DksBg:1595531358504&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjFyue-ieTqAhUR_RQKHTDEDzUQ_AUoAXoECBoQAw&biw=1280&bih=614}{Delta del Orinoco}, 
\href{https://www.google.com/search?q=salto+angel&sxsrf=ALeKk02vpMU3uqzN89yyMx8zgmUt7IADQQ:1595531456963&source=lnms&tbm=isch&sa=X&ved=2ahUKEwj7geHtieTqAhWPDWMBHT2GCjsQ_AUoAXoECB0QAw&biw=1280&bih=614}{Salto Angel}.


     \end{itemize} 

 \newpage      
	
	\section{Participants}	 
	    
	    
	    
	    
	    %\small
	    Participants come from all over the world and to turn this conference in a link between researcher we thought that an easy access to all of them may be a successful tool for further contacts; people attending this conference are located in 
	    \textcolor{olive}{Belgium,
	    Brazil,
	    Canada, 
	    Chile, 
	    China,  
	    Cyprus,
	    Denmark,
	    Germany, 
	    France, 
	    Hong-Kong,
	    Hungary,
	    Indonesia,
	    Ivory Coast,
	    Japan, 
	    Mauritius, 
	    New Caledonia, 
	    Pakistan,
	    Peru,
	    Poland,
	    Portugal,
	    Russia,
	    Singapore,
	    South Korea, 
	    Spain, 
	    Switzerland, 
	    Ukraine, 
	    United Kingdom,
	    United States of America, Uruguay} and
	    \textcolor{olive}{Vietnam.}

	 %   The fact that both the academic  and  the private sector as  \textcolor{orange}{(Biotope, CDiscount, La Capitale, Phimeca Engineering, Scor)} are represented is an additional chance for establishing  links between people 		aiming at working out ecological questions. 
	   

	
	 %   \noindent	       \textcolor{blue}{To make the document efficient and in order to allow questions even if you are not in the same time zone as a speaker exchanges will be recorded and thus questions and comment may be addressed directly. For this:
	           %For each participant:  \begin{itemize}     \item We set  direct links to institutions of the participants.       \item To email  just click on the  email of the participant.    \end{itemize}}       \noindent \

%\noindent	          \textcolor{red}{Beyond the limit of 100 participants, the sessions will be  broadcasted also available one  for diffusion in different time zones.}
	           
	        \paragraph{ \textcolor{olive}{Alphabetical list of participants integrate universities and email links:}
	           } \
                              
                                                           
                  
	\begin{itemize}
	%	\begin{enumerate}
\item  Aaron, Catherine \\ \href{https://www.uca.fr/}{UCA}, Clermont, France \\ \href{mailto:catherine.aaron@uca.fr}{catherine.aaron@uca.fr} 
\item  Alain, Mathieu \\
 \href{https://www.ulaval.ca/}{Universit\'e Laval}, Canada \\ 
 \href{mailto:mathieu.alain.2@ulaval.ca}{mathieu.alain.2@ulaval.ca} 
\item  Albrecher, Hansjoerg \\ \href{https://www.unil.ch/index.html}{University of Lausanne}, Switzerland \\ \href{mailto:hansjoerg.albrecher@unil.ch}{hansjoerg.albrecher@unil.ch} 
\item  Alimoradian, Behzad \\  \href{https://isfa.univ-lyon1.fr/}{ISFA}, Lyon, France\\  \href{mailto:behzad.alimoradian@gmail.com}{behzad.alimoradian@gmail.com}

\item  Alquier, Pierre \\  \href{https://www.riken.jp/en/research/labs/aip/}{Riken AIP}, Tokyo, Japan \\  \href{mailto:pierrealain.alquier@riken.jp}{pierrealain.alquier@riken.jp}						

\item Aries, Nawel \\ \href{https://www.usthb.dz/en/}{Universit\'e des Sciences et de la Technologie Houari Boumediene (USTHB)}, Algeria\\ \href{mailto:aries.nawel@hotmail.com}{aries.nawel@hotmail.com}
\item  Avila, Isidora \\ \href{https://advancedconservation.org/}{Advanced Conservation Strategies}, Santiago, Chile \\  \href{mailto:isidora.avila.thieme@gmail.com}{isidora.avila.thieme@gmail.com}
\item  Bahamonde, Natalia \\  \href{http://www.pucv.cl/}{PUCV}, Valparaiso, Chile \\  \href{mailto:nataliabde@gmail.com}{nataliabde@gmail.com}
%\item Baldanzi,  Simone \\ \href{https://www.uv.cl/}{UV}, Valparaiso, Chile\\  \href{mailto:simone.baldanzi@uv.cl}{ simone.baldanzi@uv.cl}
\item Barczy, Matyas \\ \href{https://u-szeged.hu/}{Simon Bolyai Institute}, Szeged, Hungary \\  \href{mailto:barczy@math.u-szeged.hu}{barczy@math.u-szeged.hu}  
\item  Baydil, Banu \\ \href{https://www.columbia.edu/}{Columbia University}, New-York,  USA \\  \href{mailto:bb2717@columbia.edu}{bb2717@columbia.edu}

\item  Bernard, Hugo \\ \href{http://www.ensai.fr/}{ENSAI}, Rennes, France\\  \href{mailto:hugo.bernard@eleve.ensai.fr}{hugo.bernard@eleve.ensai.fr}  

%\item Boliukh, Kateryna \\  \href{https://www.ukma.edu.ua/eng/}{Kyiv-Mohyla Academy}, Kiev,  Ukraine \\  \href{mailto:Bolyukhk@gmail.com}{Bolyukhk@gmail.com}
\item Boly, Ousmane \\ \href{https://www.cyu.fr/}{CY University},  Cergy, France \\  \href{mailto:boly1ousmane@gmail.com}{boly1ousmane@gmail.com}
%\item Bonnin, Lucas \\ \href{https://www.ird.fr/}{IRD}, Noum\'ea, New Caledonia \\  \href{mailto: lucasbonnin@hotmail.fr}{lucasbonnin@hotmail.fr}
%\item Bulinski, Alexander \\  \href{https://www.msu.ru/en/}{Lomonosov Moscow State University}, Moscow, Russia \\ \href{mailto:bulinski@yandex.ru}{bulinski@yandex.ru}
\item  Cabana, Alejandra \\  \href{https://www.uab.cat/}{UAB}, Barcelona, Spain \\   \href{mailto: AnaAlejandra.Cabana@uab.cat}{AnaAlejandra.Cabana@uab.cat}
\item  Cabana, Enrique \\  \href{https://www.fing.edu.uy/imerl/inicio}{IMERL, Universidad de la Rep\'ublica}, Montevideo,Uruguay
\\
\href{mailto:emcabana@gmail.com}{emcabana@gmail.com}

\item  Cheysson, Felix\\  \href{https://www.sorbonne-universite.fr/}{Sorbonne Universit\'e}, Paris,France
\\
\href{mailto:felix@cheysson.fr}{felix@cheysson.fr}

\item   Cohen, Joel E \\ \href{https://www.rockefeller.edu/}{Rockefeller University} \& \href{https://www.columbia.edu/}{Columbia University}, 
USA \\   
\href{mailto:cohen@rockefeller.edu}{cohen@rockefeller.edu} 
\item    Curato, Imma Valentina \\ \href{https://www.uni-ulm.de/en/university-news/news-details/article/jungbrunnen-fuer-alternde-maeuseforschende-drehen-die-epigenetische-uhr-zurueck-1/}{Ulm University}, 
Germany \\   
\href{mailto:imma.curato@uni-ulm.de}{imma.curato@uni-ulm.de} 

%\item Dacunha-Castelle, Didier \\ \href{https://www.universite-paris-saclay.fr/}{UPS}, Orsay, France \\  \href{mailto:dacunhacastelledidier@gmail.com}{dacunhacastelledidier@gmail.com}
%\item Das, Bikramjit\\ \href{https://www.sutd.edu.sg/}{Singapore University of Technology and Design}, Singapore\\\href{mailto:bikram@sutd.edu.sg}{bikram@sutd.edu.sg}
	
\item  de la Pena, Victor \\ \href{https://www.columbia.edu/}{Columbia University}, USA \\  \href{mailto:victordelapena2@gmail.com}{victordelapena2@gmail.com} 
\item De Lima Medina,  Francyelle \\ \href{https://www.ufpe.br/}{Federal University of Pernambuco}, Recife, Brazil \\  \href{mailto:francy@de.ufpe.br}{francy@de.ufpe.br}
\item  Dion-Blanc, Charlotte \\ \href{https://www.lpsm.paris/}{LPSM Sorbonne Universit\'e}, Paris, France \\  \href{mailto:charlotte.dion_blanc@sorbonne-universite.fr}{charlotte.dion$\_$blanc@sorbonne-universite.fr}
\item   Doukhan,  Paul \\ \href{https://www.cyu.fr/}{CY University}, Cergy, France \\  \href{mailto:doukhan@cyu.fr}{doukhan@cyu.fr} 
\item  Durot, C\'ecile \\ \href{https://www.parisnanterre.fr/}{Universite Paris Nanterre}, France \\  \href{mailto:cdurot@parisnanterre.fr}{cdurot@parisnanterre.fr}

\item  Durrieu, Gilles \\ \href{https://www.univ-ubs.fr/en/index.html}{South Brittany University}, Vannes, France \\  \href{mailto:gilles.durrieu@univ-ubs.fr}{gilles.durrieu@univ-ubs.fr}
\item   Fan, Xiequan \\ \href{http://www.tju.edu.cn/english/index.htm}{Tianjin University}, China \\   \href{mailto:fanxiequan@hotmail.com}{fanxiequan@hotmail.com}

\item  Fetiveau, Arthur \\ \href{https://www.univ-ubs.fr/en/index.html}{South Brittany University}, Vannes, France \\  \href{mailto:arthur.fetiveau@univ-ubs.fr}{arthur.fetiveau@univ-ubs.fr}

\item   Feugeas, Jean-Paul \\ \href{https://www.univ-fcomte.fr/}{University of  Besan\c{c}on} \href{https://www.inserm.fr/}{INSERM}, France \\  
 \href{mailto:jean-paul.feugeas@inserm.fr}{jean-paul.feugeas@inserm.fr}

\item   Fokianos, Konstantinos \\ \href{http://www.ucy.ac.cy/en/}{University of Cyprus}. Cyprus \\    \href{mailto:fokianos@ucy.ac.cy}{fokianos@ucy.ac.cy}
\item Fouch\'e, Edouard \\ \href{http://www.kit.edu/}{Karlsruhe Institute of Technology},  Germany \\  \href{mailto:edouard.fouche@kit.edu}{edouard.fouche@kit.edu}

\item Fourest, C\'ecile,  \\ \href{https://cnes.fr/fr}{CNES},  Kourou, Guyane. \\  
\href{mailto:cecile.Dechoz@gmail.com}{cecile.Dechoz@gmail.com}

\item  Franchi, Guillaume \\ \href{http://www.ensai.fr/}{ENSAI}, Rennes, France\\  \href{mailto:guillaume.franchi@eleve.ensai.fr }{guillaume.franchi@eleve.ensai.fr } 


%\item Fusi, Marco\\ \href{https://www.scotland.org/study/scottish-universities/edinburgh-napier-university}{Edinburgh Napier University}, UK \\ \href{mailto:m.fusi@napier.ac.uk}{m.fusi@napier.ac.uk}
\item Garnier, R\'emy \\ \href{https://www.cdiscount.com/}{CDiscount} \& \href{https://www.cyu.fr/}{CY University},  Cergy, France \\  \href{mailto:Remy.Garnier@ext.cdiscount.com}{Remy.Garnier@ext.cdiscount.com}
%\item Gaudlitz, Robert \\ \href{https://www.hu-berlin.de/en?set_language=en}{Humboldt University}, Berlin, Germany \\   \href{mailto:sascha.robert.gaudlitz@student.hu-berlin.de}{sascha.robert.gaudlitz@student.hu-berlin.de}
\item Ghanavi	Rozhin \\ \href{Cohere ai}{Cohere ai}, Toronto, Canada \\  \href{mailto:rghanavi@gmail.com}{rghanavi@gmail.com}						
\item Gomez Garcia, Jos\'e \\  \href{http://www2.agroparistech.fr/}{AgroParistech} Paris, France \\ \href{mailto:jose3g@gmail.com}{jose3g@gmail.com}
\item  Goncalves, Branda \\ \href{https://www.cyu.fr/}{CY University},  Cergy, France \\  \href{mailto:branda.goncalves@outlook.fr}{branda.goncalves@outlook.fr}
\item  Guillaume, Tristan \\ \href{https://www.cyu.fr/}{CY University},  Cergy, France \\  \href{mailto:tristan.guillaume@cyu.fr}{tristan.guillaume@cyu.fr}
\item Hoang, Van Ha \\ \href{https://en.hcmus.edu.vn/}{University of Science}, Ho Chi Minh, Viet Nam\\ 
\href{mailto:hvha@hcmus.edu.vn}{hvha@hcmus.edu.vn}
\item  Hodara, Pierre \\ \href{https://icm-institute.org/en/}{ICM}, Paris, France \\  \href{mailto:pierre.hodara@icm-institute.org}{pierre.hodara@icm-institute.org}
\item  Huillet, Thierry \\ \href{https://www.cyu.fr/}{CY University}, Cergy, France \\  \href{mailto:thierry.huillet@cyu.fr}{thierry.huillet@cyu.fr}
\item Hwang, Eunju \\ \href{https://www.gachon.ac.kr/english/}{Gachon University},  Seongnam, South Korea \\   \href{mailto:ehwang@gachon.ac.kr}{ehwang@gachon.ac.kr}
%\item Illarze, Mariana\\ \href{https://www.natureindex.com/institution-outputs/uruguay/eastern-regional-university-centre-cure-udelar/58aec4f1140ba06a2a8b4569}{CURE, Universidad de la Rep\'ublica}, Montevideo,Uruguay  \\ \href{mailto:marianaillarze@gmail.com}{marianaillarze@gmail.com}
\item  Jakubowski, Adam \\ \href{https://www.umk.pl/en/}{Nicholas Copernic University}, Torun, Poland \\  \href{mailto:adjakubo@mat.umk.pl}{adjakubo@mat.umk.pl} 
%\item  Kadankova, Tetyana \\ \href{https://www.vub.be/}{Vrije Universiteit}, Brussel, Belgium \\  \href{mailto:tetyana.kadankova@vub.be}{tetyana.kadankova@vub.be}
\item  Kengne, William \\ \href{https://www.cyu.fr/}{CY University}, Cergy, France \\  \href{mailto:william.kengne@cyu.fr}{william.kengne@cyu.fr}
\item Klesov, Oleg \\  \href{https://inter.kpi.ua/}{National Technical University of Ukraine}, Kiev, Ukraine \\  \href{mailto:Klesov@matan.kpi.ua}{Klesov@matan.kpi.ua}
%\item Komiyama,  Junpei \\ \href{https://www.nyu.edu/}{New York University},  USA \\   \href{mailto:junpei.komiyama@stern.nyu.edu}{junpei.komiyama@stern.nyu.edu}
%\item  Kouame, Euloge \\ \href{http://www.uvci.edu.ci/}{Virtual University of Ivory Coast}, Abidjan, Ivory Coast\\  \href{mailto:euloge.kouame@uvci.edu.ci}{euloge.kouame@uvci.edu.ci} 
\item  Koukiou, Flora \\ \href{https://www.cyu.fr/}{CY University}, Cergy, France \\
 \href{mailto:Flora.KOUKIOU@cyu.fr}{Flora.KOUKIOU@cyu.fr}  
\item  Laib,  Naamane \\ \href{https://www.cyu.fr/}{CY University}, Cergy, France \\  \href{mailto:naamane.laib@cyu.fr}{naamane.laib@cyu.fr} 
\item  Lang, Gabriel \\  \href{http://www2.agroparistech.fr/}{AgroParisTech}, Paris, France \\   \href{mailto: gabriel.lang@agroparistech.fr}{gabriel.lang@agroparistech.fr}

\item  Langhendries, Raphael \\  \href{https://samm.univ-paris1.fr/}{SAMM}, Paris, France \\   \href{mailto:r.langhendries@gmail.com}{r.langhendries@gmail.com}

\item  Laverny, Oskar \\ \href{https://www.univ-lyon1.fr/}{University Lyon 1}, France \\  \href{mailto:olaverny@scor.com}{olaverny@scor.com}

\item  Lbath, Hana \\ \href{https://www.inria.fr/fr}{INRIA}, France \\  \href{mailto:hana.lbath@inria.fr}{hana.lbath@inria.fr}

\item   Lebecq, Louis \\ \href{https://www.univ-ubs.fr/en/index.html}{South Brittany University}, Vannes, France \\  \href{mailto:lebecq.e1901798@etud.univ-ubs.fr}{lebecq.e1901798@etud.univ-ubs.fr }

\item Le Bras, Yves \\ \href{https://www.biotope.fr/}{Biotope}, M\`eze, France \\  \href{mailto:ylebras@biotope.fr}{ylebras@biotope.fr}
\item	 Lember,	J\"uri\\
\href{https://www.ut.ee/en}{University of Tartu}, Estonia
\\
\href{mailto:jyril@ut.ee}{jyril@ut.ee}

%\item Le\'on, Jos\'e\\ \href{https://www.fing.edu.uy/imerl/inicio}{IMERL, Universidad de la Rep\'ublica}, Montevideo,Uruguay \\ \href{mailto:rlramos@fing.edu.uy}{rlramos@fing.edu.uy}
%\item Leonenko, Nikolai \\ \href{https://www.cardiff.ac.uk/}{Cardiff University}, United Kingdom \\  \href{mailto:LeonenkoN@Cardiff.ac.uk}{LeonenkoN@Cardiff.ac.uk}
\item Leucht, Anne \\ \href{https://www.uni-bamberg.de}{University of Bamberg}, Germany \\  \href{mailto:anne.leucht@uni-bamberg.de}{anne.leucht@uni-bamberg.de}
\item Li, Xiaoyin \\ \href{https://www.stcloudstate.edu/}{St. Cloud State University}, USA \\ 	\href{mailto:lixiaoyin0925@gmail.com}{lixiaoyin0925@gmail.com}
%\item Longepierre, L\'ea \\ \href{https://www.sorbonne-universite.fr/}{Sorbonne Universit\'e}, Paris,  France \\  \href{mailto:lea.longepierre@sorbonne-universite.fr}{lea.longepierre@sorbonne-universite.fr}
\item  Loisel, St\'ephane \\  \href{https://isfa.univ-lyon1.fr/}{ISFA}, Lyon, France\\  \href{mailto:stephane.loisel@univ-lyon1.fr}{stephane.loisel@univ-lyon1.fr }

\item Lopes,  Silvia Regina Costa\\ 
\href{http://www.ufrgs.br/english/home}{UFRGS}, Porto Alegre, Brasil \\  \href{silviarc.lopes@gmail.com}{silviarc.lopes@gmail.com}
\item   Lmakri,	Aziz	 \\ \href{http://www.fstt.ac.ma/Portail/index.php}{Faculty of Sciences and Techniques of Tangier}, Morocco \\  \href{mailto:lmakriaziz@gmail.com}{lmakriaziz@gmail.com}					
\item Maddanu, Frederico \\  \href{http://web.uniroma2.it/}{University of Rome Tor Vergata}, Italy \\  \href{mailto:federico.maddanu@gmail.com}{federico.maddanu@gmail.com}
\item Mamode Khan, Naushad \\  \href{https://www.uom.ac.mu/}{University of  Mauritius}, Mauritius \\  \href{mailto:n.mamodekhan@uom.ac.mu}{n.mamodekhan@uom.ac.mu}

\item  Marquet, Pablo \\   \href{https://www.uc.cl/}{PUC}, Santiago, Chile \\  \href{mailto:pmarquet@bio.puc.cl}{pmarquet@bio.puc.cl}

%\item M\'at\'e, Szalai\\ \href{https://u-szeged.hu/}{Simon Bolyai Institute}, Szeged, Hungary \\  \href{mailto:szalai.mate21@gmail.com}{szalai.mate21@gmail.com}
\item Medina Garay,   Aldo William \\ \href{https://www.ufpe.br/}{Federal University of Pernambuco}, Recife, Brazil \\  \href{mailto:agaray@de.ufpe.br}{agaray@de.ufpe.br}

\item  Navarrete, Sergio \\  \href{https://www.uc.cl/}{PUC}-\href{http://ecim.bio.puc.cl/en/}{ECIM}, Las Cruces, Chile \\  \href{mailto:snavarrete@bio.puc.cl}{snavarrete@bio.puc.cl}
\item  Neumann, Michael H \\ \href{https://www.uni-jena.de/en}{Friedrich Schiller University}, Jena, Germany \\  
\href{mailto:michael.neumann@uni-jena.de}{michael.neumann@uni-jena.de}

\item  Nguyen, Thi Hien \\ \href{https://www.cyu.fr/}{CY Tech, CY University},  Cergy, France \\  \href{mailto:nguyen.thi.hien.k5@gmail.com}{	nguyen.thi.hien.k5@gmail.com}
\item Nolberto Sifuentes, Violeta Alicia\\
\href{http://www.unmsm.edu.pe/}{UNMSM: Universidad Nacional Mayor de San Marcos}, Lima, Peru\\
 \href{mailto:vnolbertos@unmsm.edu.pe}{vnolbertos@unmsm.edu.pe}
\item Pasemann, Gregor \\ \href{https://www.tu.berlin/en/}{TU Berlin}, Germany \\    \href{mailto:pasemann@math.tu-berlin.de}{pasemann@math.tu-berlin.de}
%\item  Parent, Eric \\ \href{http://www2.agroparistech.fr/}{AgroParisTech}, Paris, France \\  \href{mailto: eric.parent@agroparistech.fr}{eric.parent@agroparistech.fr}
\item Pere, Christophe \\  \href{https://www.lacapitale.com/fr}{La Capitale}, Montr\'eal, Canada \\  \href{mailto:Pere.christophe1@gmail.com}{pere.christophe1@gmail.com}
\item Pereira, Isabel \\ \href{https://www.ua.pt/}{University of Aveiro}, Aveiro, Portugal\\ \href{mailto:isabel.pereira@ua.pt}{isabel.pereira@ua.pt}


\item   Philippe, Anne \\ \href{https://www.math.sciences.univ-nantes.fr/fr}{LMJL},  Nantes, France. \\ 
\href{mailto:Anne.Philippe@univ-nantes.fr}{Anne.Philippe@univ-nantes.fr }
\item  
Poignard,	Benjamin \\ \href{https://www.osaka-u.ac.jp/ja}{Osaka University} and   \href{https://www.riken.jp/en/research/labs/aip/}{RIKEN AIP},   Osaka, Japan \\  \href{mailto:bpoignard@gmail.com}{bpoignard@gmail.com}

\item  
Pommeret,	Denys \\ 
\href{https://www.univ-amu.fr/}{Aix-Marseille University, I2M} and \href{https://isfa.univ-lyon1.fr/}{laboratory SAF, ISFA},   France. \\  \href{mailto:denys.pommeret@univ-amu.fr }{denys.pommeret@univ-amu.fr}

%\item   Prieur, Cl\'ementine \\ \href{https://www.univ-grenoble-alpes.fr/}{University Grenoble-Alpes},   Grenoble, France. \\ \href{mailto:clementine.prieur@univ-grenoble-alpes.fr }{clementine.prieur@univ-grenoble-alpes.fr }

\item  Prigent, Jean-Luc \\ \href{https://www.cyu.fr/}{CY University},   Cergy, France \\  \href{mailto:Prigent@cyu.fr}{Prigent@cyu.fr}
%\item Rapp, Albert \\ \href{https://www.uni-ulm.de/en}{Ulm University}, Germany \\  \href{mailto:albert.rapp@uni-ulm.de}{albert.rapp@uni-ulm.de}
\item  Rebolledo, Rolando \\ \href{https://www.uv.cl/}{UV}, Valparaiso, Chile\\  \href{mailto:rolando.rebolledo@uv.cl}{rolando.rebolledo@uv.cl}

\item  Renault, Eric \\  \href{https://warwick.ac.uk/}{University of Warwick}, United Kingdom\\  \href{mailto:Eric.Renault@warwick.ac.uk}{Eric.Renault@warwick.ac.uk}
%\item  Roa, Tania \\ \href{https://www.uv.cl/}{Universidad de Valparaíso}, Chile \\ \href{mailto:taniaroarojas@gmail.com}{taniaroarojas@gmail.com}

 \item
  Randon Furling, Julien \\ \href{http://www.pantheonsorbonne.fr/}{Panth\'eon-Sorbonne University},  Paris, France \\   \href{mailto:j.randon.furling@gmail.com}{j.randon.furling@gmail.com}
 \item
  Reboul, Laurence \\ \href{http://iml.univ-mrs.fr/~reboul/}{Aix-Marseille University}, France \\   \href{mailto:laurence.reboul@univ-amu.fr
}{laurence.reboul@univ-amu.fr}
\item  Roux,  Jean-Baptiste Roux \\ \href{https://www.univ-ubs.fr/en/index.html}{South Brittany University}, Vannes, France \\  \href{mailto:roux.e1901747@etud.univ-ubs.fr }{roux.e1901747@etud.univ-ubs.fr }

\item
 Rynkiewicz, Joseph \\ \href{http://www.pantheonsorbonne.fr/}{Panth\'eon-Sorbonne University},  Paris, France \\   \href{mailto:Joseph.Rynkiewicz@univ-paris1.fr}{Joseph.Rynkiewicz@univ-paris1.fr}
\item Safikhani,  Abolfazl\\
 \href{https://www.ufl.edu/}{University of Florida}, Gainesville, USA\\
\href{mailto:abolfazl.safikhani@gmail.com}{abolfazl.safikhani@gmail.com}
\item  Salhi, Yahia \\  \href{https://isfa.univ-lyon1.fr/}{ISFA}, Lyon, France\\  \href{mailto:yahia.salhi@gmail.com}{yahia.salhi@gmail.com}


\item   Sajjad, Irsa \\  \href{https://uol.edu.pk/}{The University of Lahore},  Islamabad, Pakistan\\  \href{mailto:Isra.sajjad@lbs.uol.edu.pk}{Isra.sajjad@lbs.uol.edu.pk}
\item  Samorodnitsky, 	Gennady \\ \href{https://www.cornell.edu/}{Cornell University}, Ithaca,  USA \\ 
 \href{mailto:gs18@cornell.edu}{gs18@cornell.edu}

%\item  Shchestyuk, Nataliya \\ \href{https://www.ukma.edu.ua/eng/}{Kyiv-Mohyla Academy}, Kiev,  Ukraine \\ \href{mailto:Natalyshch@gmail.com}{Natalyshch@gmail.com}

\item  Surgailis,	Donatas\\
 \href{https://www.vu.lt/en/}{Vilnius university},  Lithuania
\\
\href{mailto:donatas.surgailis@mif.vu.lt}{donatas.surgailis@mif.vu.lt}	
%\item  Suvak, Nenad\\  \href{http://www.unios.hr/en/}{University of Osijek},  Croatia \\ \href{mailto:nsuvak@mathos.hr}{nsuvak@mathos.hr}
%\item Tejo, Mauricio\\ \href{https://www.utem.cl/}{Universidad Tecnol\'ogica Metropolitana}, Santiago, Chile \\  \href{mailto:m.tejoa@utem.cl}{m.tejoa@utem.cl}
%\item Tovo, Anna \\ \href{https://www.unipd.it/}{University of Padova},  Italy\\  \href{mailto:Anna.tovo90@gmail.com}{Anna.tovo90@gmail.com}
\item Tran,  Chi \\ \href{https://www.univ-gustave-eiffel.fr/}{Gustave Eiffel University}, Marne-la-Vall\'ee, France \\  \href{mailto:chi.tran@u-pem.fr}{chi.tran@u-pem.fr }

\item Tran,  Diu \\ %\href{https://www.hcmut.edu.vn/en}{ Ho Chi Minh University of Technology (HCMUT)}, 
Ho Chi Minh, Vietnam \\  \href{mailto:ttdiu.tran@gmail.com}{ttdiu.tran@gmail.com}



\item  Truquet, Lionel \\ \href{http://www.ensai.fr/}{ENSAI}, Rennes, France\\  \href{mailto:Lionel.TRUQUET@ensai.fr}{Lionel.TRUQUET@ensai.fr}  
%\item  Tyshchenko, Serhii \\ \href{https://www.ukma.edu.ua/eng/}{Kyiv-Mohyla Academy}, Kiev,  Ukraine\\    \href{mailto:tsergiiv@gmail.com}{tsergiiv@gmail.com}\item Valencia, Daniel\\ \href{https://www.uc.cl/}{PUC}, Santiago, Chile\\  \href{mailto:dgvalencia@uc.cl}{dgvalencia@uc.cl}
\item Veraart,	Almut\\ \href{https://www.imperial.ac.uk/}{Imperial College} London, UK\\  \href{mailto:a.veraart@imperial.ac.uk}{a.veraart@imperial.ac.uk}		

\item  Videla, Leonardo \\ \href{https://ingemat.uv.cl/}{Instituto de Ingeniería Matemática, } Universidad de Valparaíso, Chile\\  \href{mailto:leonardo.videla@uv.cl}{leonardo.videla@uv.cl}		


\item Watkins, Chris\\ \href{https://www.royalholloway.ac.uk/}{Royal Holloway, University of London}, UK\\  \href{mailto:C.J.Watkins@rhul.ac.uk}{C.J.Watkins@rhul.ac.uk}				

%\item Wu, Songqi \\ \href{http://www.tju.edu.cn/english/index.htm}{Tianjin University}, China\\  \href{mailto:wusongqi7@163.com}{wusongqi7@163.com}
% \item  Xu, Hui Yi \\ \href{http://www.tju.edu.cn/english/index.htm}{Tianjin University}, China\\  \href{mailto:1453826274@qq.com}{1453826274@qq.com}

% \item Zain, Muhammad Zainuddin Lubis \\ \href{https://www.polibatam.ac.id}{Politeknik Negeri Batam}, Batang, Indonesia \\  \href{mailto:zainuddinlubis@polibatam.ac.id}{zainuddinlubis@polibatam.ac.id}
 \item Zhu, Ke\\
\href{https://www.hku.hk/}{University of Hong Kong}, Hong Kong\\
\href{mailto:mazhuke@hku.hk}{mazhuke@hku.hk}


%  \end{enumerate}
     \end{itemize} 
   
                    \end{document}  
                    		