Paul Hauseux was always interested in science, but only recently settled on the researcher path. Before that, his career ambitions stretched from working in sports or music to teaching science. Some years and a PhD later, the French national has come to Luxembourg for his computational engineering Postdoc in the team of ERC grantee Stéphane Bordas at the University of Luxembourg.
“I had the opportunity to do a PhD at University of Lille and this experience with research convinced me to continue in this direction”, Paul says about how he ended up becoming a researcher, adding:
“I like to continuously learn and I have a lot of scientific curiosity. Research gives me freedom and independence and it also enables me to travel, particularly to conferences. In most cases, researchers work in universities and a part of their work is teaching, an aspect I also appreciate.”
After completing his PhD in France, which was funded by the French national radioactive waste management agency (ANDRA), Paul was looking for a place to do a Postdoc. He stumbled across an open position in his field at the Institute of Computational Engineering at the University of Luxembourg, and in January 2016 he came to Luxembourg.
Modelling the effects of uncertainty
Paul works with Prof Stéphane Bordas in the Engineering Science research unit at the University and is a member of the Legato team, which aims to build intuitive and interactive platforms for computational mechanics problems. Paul specifically works on “stochastic finite element methods” – but what exactly is that?
Various fields such as mechanics, geophysics, dynamical systems, statistical physics and mathematical finance rely on modelling what effect uncertainty could have on the output of a system. When it is impossible to analytically solve a problem, numerical methods – such as the ‘finite element method’ are used to develop a model that approximates a solution.
Paul says: ”When parameters involved in the model have a certain degree of uncertainty, stochastic methods, e.g. the stochastic finite element method, are used to take into account this uncertainty. Uncertainties can be modelled by both random variables and random fields in my research.”
“Numerical models and simulations are now commonly used to assist clinicians. I work on the simulation of soft tissue undergoing large deformations and address the problem of quantifying the effect of uncertainties on certain quantities of interest to the user e.g. displacement in a region. The picture shows the numerical results of the displacement of the brain and a target in the brain during brain shift (during a surgery). Monte Carlo methods are employed to propagate uncertainty and so provide statistical results. These methods lead to a collection of independent realisations of the forward model to solve and the picture shows the results for a given set of parameters.”
So what exactly does life look as a computational engineering researcher? It comes to no surprise that daily activities involve spending a lot of time on the machine you are working to improve:
“I spend practically all my day working on a computer. I split my time between implementing new numerical methods and reading scientific papers. Discussions with my colleagues and my advisor are also necessary to make progress and guide my research in the right direction. It is important to be aware of new advances in my field.
“When I obtain interesting results then it is time to write a paper and to attend conferences and/or seminars to show and share my work with other researchers. It also gives me the opportunity to learn, to meet new people and start collaborations. The researcher who is 100% alone and locked in his office is almost non-existent!”
In terms of career goals, Paul would like to have his own research programme and improve the scientific knowledge in his domain. “I would also be glad if my methods can be used by the industry, because there is still a big gap between scientific publications and what it is really made in the industrial sector. On top of that, writing a book before the end of my career is also an objective”, Paul says.
Luxembourg research has “significant potential”
“I originally thought that I would stay for a short experience, but I quickly realised working conditions here are excellent”, Paul says, adding that he was able to extend his initial contact, also pointing out that Luxembourg has some significant potential to become a research destination:
“The creation of the Centre of Excellence in Scientific Computing will enable connections between the different communities. In Luxembourg and with the new campus in Belval, a large diversity of disciplines is present in the same location. All disciplines have everything to gain, to share and bring together important resources concerning computational sciences, because they all use common bases.
“This centre will also help to build partnerships with companies. Finally, most people who come to Luxembourg want to stay because Luxembourg is also a pleasant place to live.”
Spotlight on Young Researchers is an FNR initiative to highlight early career researchers across the world who have a connection to Luxembourg. This article is the 13th in a series of around 25 articles, which will be published on a weekly basis. You can see more articles below as and when they are published.
Spotlight on Young Researchers: Gilles Tossing
Gilles Tossing’s fascination for the human brain – and why it sometimes fails – led him to the path of research. Now in the second year of his AFR PhD at Université de Montréal in Canada, the Luxembourg national investigates neurodegenerative diseases, with the aim of improving treatments for those affected.
Spotlight on Young Researchers: A gas sensor powered by natural light
Many of the things we furnish our homes and office with emit gases that we are oblivious to inhaling. As eliminating these items from our lives is unrealistic, science wants to understand that which we cannot eliminate, thus more effective sensors are needed. Material scientist Rutuja Bhusari combines materials at nanoscale to create a gas sensor powered by nature.
In high school, Anna Schleimer thought everything there was to know in science was already known. When she discovered how many unanswered questions there still are, curiosity drove her to become a researcher. The Luxembourg national is now in the 1st year of her AFR PhD, in what is not your most common topic: As a marine biologist, Anna studies fin whales as part of her joint PhD at University of Groningen and University of St Andrews.
Ernesto Gargiulo has always had a curious and inquisitive disposition, which as a child saw him spending hours outdoors, in a quest to discover. At University, Ernesto’s attention turned to oncology. Set on applying and strengthening his knowledge, the Italian national embarked on a PhD at the Luxembourg Institute of Health (LIH), where he works on characterising exosomes, small extracellular vesicles, linked to cancer development, progression and chemo-resistance.
In industry, computer simulations and optimizations are established approaches to inform and improve engineering designs. As part of his Industrial Fellowship, Postdoc Martin Řehoř works on numerical solvers that could help solve design problems that involve the processing of fluids.
Spotlight on Young Researchers: AI for ethical and legal debates
Looking at popular culture, big tech and ongoing societal debates – technological progress in Artificial Intelligence (AI) affects us all. Researchers from numerous scientific fields are working on the best way to bring AI forward, including the study of systems able to autonomously reason over arguments – calculators for philosophical, ethical or legal debates.
Pit Ullmann’s interest in natural sciences was piqued in high school. The Luxembourg national went on to study molecular biology at the University of Innsbruck and then found himself desiring a job that would be both interdisciplinary and diversified – fast forward and Pit is now completing his AFR PhD at the University of Luxembourg, where his research group studies why and how colon cancer develops and spreads.
Hussein Rappel uses a mathematical learning approach to try to predict and simulate physical phenomena. The Iranian national came to Luxembourg in 2014 to join the team of Prof Stephane Bordas at the University of Luxembourg, where he is now in the 3rd year of his PhD in Computational Science – and sees great potential in Luxembourg as a research destination.
Spotlight on Young Researchers – revisited 5 years later: From Luxembourg to Australia
When we wrote about Chetan Arora in the 2017 edition of Spotlight on Young Researchers, he was a Postdoc working in requirements engineering at the SnT, having just completed his PhD. 5 years later, Chetan is on the other side of the world working as a Senior Lecturer and Academic Director for coursework research. We spoke to Chetan about how he is still a “houfreg Lëtzebuerger”, what he is working on now, and why after working both in industry and academia, he found his heart to be in the world of research.
Spotlight on Young Researchers: Léon-Charles Tranchevent
Léon-Charles Tranchevent says he has found the perfect job in being a researcher. Cherishing the freedom and unexpectedness of his line of work, the computational biologist also feels it’s his duty to contribute to the training of the next generation of researchers. The French national has recently begun his AFR Bilateral Postdoc at the Luxembourg Institute of Health in collaboration with Nanyang Technological University (NTU) in Singapore.
Ever since he was a child, Jo Hoeser wanted to understand the function of complex systems. He found himself taking apart and trying to fix broken electronic devices. Then fascination for chemistry came into the mix. Fast forward some years and the Luxembourg national completed his AFR PhD in biochemistry at the Albert-Ludwigs University Freiburg – and wants to return to the Grand Duchy to continue his career in research.
Spotlight on Young Researchers: Steve Dias Da Cruz
While machine learning and deep learning have come a long way, they are not yet at a stage where autonomous vehicles can handle unexpected situations. As part of a public research-industry collaboration, early career researcher Steve Dias Da Cruz investigates possibilities to reduce the amount of data needed to train reliable deep learning models for safety critical applications in the automotive industry.
Silvia Girardi is a sociologist with an interest in studying policies that aim to contrast poverty. As part of her joint PhD at Luxembourg Institute of Socio-Economic Research (LISER) and KU Leuven, the Italian national looks at the social policies that support low-income households in Luxembourg, taking the perspectives of the citizens on the receiving end, and the social workers involved in implementation.
After doing his Master’s degree and working in the private sector in Argentina, German Castignani decided to do a research internship in France, which piqued his interest for research. After completing his PhD in wireless networking in France, the Italian-Argentinian national came to Luxembourg, where he added an entrepreneurial perspective to his vehicular telematics research, co-founding the SnT’s first spin-off Motion-S.
Spotlight on Young Researchers: Yamila Mariel Omar
As part of her Industrial Fellowship – a collaboration between the University of Luxembourg and company Husky – PhD candidate Yamila Mariel Omar helps industry to monetize their proprietary data by means of big data analytics. We speak to the Argentinian national who also became a mother during her PhD.
Spotlight on Young Researchers: The historical relationship between the European Community and the Soviet Union
As war rages in Ukraine, the topic PhD candidate Claude Ewert has been researching for the past three years is perhaps more relevant now than ever: the relationship between the European Community and the Soviet Union. The historian is gathering valuable information on the EC’s early foreign policy and the obstacles that had to be overcome to try to make the Community speak with one voice.
Spotlight on Young Researchers: Understanding drug resistance in skin cancer
Melanoma is a rare type of skin cancer, but it is the deadliest type – and incidence is on the rise. Metastatic melanoma has seen a rapid emergence in drug resistance: After a few months, treatment stops working and tumours begin to grow again. Molecular biologists are working to understand why this happens.
Charles de Bourcy decided to become a researcher on human health when he realised the human body is not invincible. After completing his undergraduate studies at University of Oxford, the Luxembourg national secured one of the most prestigious scholarships in the world and embarked on a PhD at Stanford University. Now in the final year of this PhD in Applied Physics, Charles is taking his first steps towards his goal of building technologies to help ease the burden of global disease.
Svenja Bourone is a chemist who has always had a fascination for natural sciences. During her master studies at RWTH Aachen, she became captivated by functional nanomaterials and as chance would have it, a doctoral position opened up in just that field. During her AFR PhD, Svenja developed a new protocol to help with the synthesisation of gold nanoparticles, which she is now putting to use in her work as a Postdoc. The Luxembourg national has a strong desire to return home to the Grand Duchy to continue her work on nanomaterials.
Eva Lagunas has always been curious about technology, even building her own makeshift smartphone when she was a child. A couple of degrees later, the Spanish national set her sights on coming to Luxembourg, family in tow, to take up a Postdoc position at the University of Luxembourg’s Interdisciplinary Centre for Security, Reliability and Trust (SnT). Now, she feels lucky to spend her time researching satellite communications in the 5G era.
Spotlight on Young Researchers: Measuring the environmental impact of investment funds
Sustainable capital market investments are expected to reach 53 trillion USD – about 1 in every 3 dollars invested – by 2025. Meanwhile, a much lower level of funds are going directly into climate-related projects, leading to an increasing concern of greenwashing in the market. Researchers are developing science-based tools to measure the environmental impact of financial investment decisions.
Xianqing Mao comes from a family of professors and doctors and thus has always had a natural interest in science. The Chinese national completed a medical degree, but felt she still had unanswered questions, so she decided to go abroad and took a leap into biomedical research. After stays in France, the UK, the United States and Belgium, Xianqing is now transitioning from junior to senior researcher at the Luxembourg Institute of Health, where she has already been involved in several projects investigating cancer progression.
Anna Monzel cites her thirst for new knowledge and discoveries as a key contributor in her choosing to follow the path of science. Drawn to Luxembourg because of its interdisciplinary approach, the German national developed a 3D model of the human midbrain for her PhD at the LCSB at the University of Luxembourg – which earned her a Lush Young Researcher Prize.
Spotlight on Young Researchers: Nathasia Mudiwa Muwanigwa
Growing up in Botswana and Zimbabwe, Nathasia Mudiwa Muwanigwa did not see science as a career option. Fast forward a few years: Nathasia is studying Parkinson’s disease as part of her PhD at the LCSB at the University of Luxembourg, and has co-founded a STEM initiative that was featured in Forbes.
Having started his professional career 16 years ago, Paulo Carvalho did not plan any major career changes. Then an opportunity came up that would change work life as he knew it and a few years later, the French/Portuguese national is completing his PhD at the Luxembourg Institute of Science and Technology (LIST).
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