News: Matematiska vetenskaperhttp://www.chalmers.se/sv/nyheterNews related to Chalmers University of TechnologyMon, 05 Dec 2022 19:10:55 +0100http://www.chalmers.se/sv/nyheterhttps://www.chalmers.se/en/departments/math/news/Pages/Economic-interests-cloud-hazardous-chemicals-reductions.aspxhttps://www.chalmers.se/en/departments/math/news/Pages/Economic-interests-cloud-hazardous-chemicals-reductions.aspxEconomic interests cloud hazardous chemicals reductions<p><b>The regulation of hazardous chemicals in Europe has been shaped by economic interests, according to a study published in Nature Communications. The researchers behind the study have found that European  regulators have tended to focus on chemicals of low economic importance, leading to lower than anticipated hazard reduction within the union.  ​</b></p><img src="/SiteCollectionImages/Institutioner/MV/Nyheter/REACH/Jessica-Coria-web.jpg" class="chalmersPosition-FloatRight" alt="Jessica Coria" style="margin:5px;width:150px;height:150px" />​​“We show that the most important factor determining whether a substance is subjected to binding limitations and conditions is whether it is being produced in, or imported into, the European Economic Area. The regulators are less likely to list a substance as hazardous in the Candidate List of substances of very high concern if it affects the economic interests of European firms”, says Jessica Coria, Associate Professor in Economics at the School of Business Economics and Law at University of Gothenburg. <div><br /></div> <div>This is the main conclusion of the study <em>Economic interests cloud hazard reductions in the European regulation of substances of very high concern</em>, which was recently published in Nature Communications, and which she carried out together with Mikael Gustavsson and Erik Kristiansson from the Department of Mathematical Sciences. </div> <div><br /></div> <div>In 2016, the European Environment Agency estimated that more than 60 percent of the total weight of chemicals used in Europe is, in one way or another, harmful to human health. At the same time, there is an explicit ambition in the European chemicals legislation to provide strong protection for the environment and human health. For example, within REACH (Registration, Evaluation, Authorization and Restriction of Chemicals, a piece of legislation that currently covers more than 20,000 registered chemicals), the manufacture and use of certain particularly hazardous substances can be subject to various binding restrictions and conditions, including bans on usage.</div> <h2 class="chalmersElement-H2">Economic factors play a large role</h2> <div>Within REACH, implementing a ban on a substance is normally a two-stage process. First, a member state, or the European Chemical Agency, propose that a specific substance should be included on the so-called Candidate list. The substances on the Candidate list then undergo a prioritisation process for inclusion on the so-called authorization list. Once a substance is finally on the authorization list, a special approval is required for all forms of continued use.</div> <div><br /></div> <div> <div>The presented study examines how different driving forces affect which chemicals that are proposed for regulation. The study shows that both risk minimisation as well as the amount of scientific evidence available on the chemicals effects are of great importance in the regulatory process. But the study also shows that chemicals with low economic importance have been included in the list at a greater rate than anticipated. This means that the candidate list to a large extent consists of substances where production and import to the European Economic Area had already ceased prior to the listing, and that several listed substances never had been produced in or imported to the area at all. Regardless of the specific reason, this results in a overall risk reduction that is lower than expected.</div> <h2 class="chalmersElement-H2">Finding and structuring data</h2> <img src="/SiteCollectionImages/Institutioner/MV/Nyheter/REACH/ErikKristiansson-web.jpg" class="chalmersPosition-FloatRight" alt="Erik Kristiansson" style="margin:5px;width:150px;height:150px" /><div></div> <div>“Compiling and structuring data has taken up a considerable amount of time during this study. This information is not readily available for download in a preprocessed, curated form. Instead we have had to merge several different data sources”, says Erik Kristiansson. “For example, we have analysed close to 200,000 scientific articles in PubMed to obtain information on how well-studied various substances are.” </div> <div><br /></div> <div> Information on the chemicals toxicological properties, how harmful they are to humans and how harmful they are in the environment, was also collected. Combining different large data sources, i.e. data integration, is a specialty of the research group. The raw material, data produced in different places for different purposes and collected in different ways, is complex and therefore unusual in this type of research. </div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/MV/Nyheter/REACH/Mikael-Gustavsson-web.jpg" class="chalmersPosition-FloatLeft" alt="Mikael Gustavsson" style="margin:5px;width:150px;height:150px" /><br /></div> <div>“Normally, you settle for one source, because you want your data to be well structured from the start. We are just a little bit more used to having to massage it into a useable shape”, says Mikael Gustavsson.</div> <div><br /></div> <div>One challenge the researchers have encountered while working on the study is that large amounts of data are simply not available. In some cases because the data is considered sensitive, but also because companies are not used to there being an interest in their data and they also often don’t know what can be accomplished with modern statistical methods. </div> <div><br /></div> <div> ”Data availability is a very important issue that needs to be discussed in the future. Authorities need to work more transparently and make more of the information they gather more accessible. That would open up a lot of opportunities for the research community”, says Erik Kristiansson.</div> <div><h2 class="chalmersElement-H2">Delivering reliable results</h2> <div>There are lots of uncertainty in the collected data. As an example, the measurements that generate data on toxicity can be of different quality. Therefore, it is extremely important to perform a thorough statistical analysis on the deviations found in the material. In the study, the researchers have, among other things, started from parameters that are supposed to influence the regulatory system, and examined how well they describe the outcome since the introduction of the chemical regulation REACH in 2008. </div> <div><br /></div> <div>For example, substances that are so-called CMR, (carcinogenic, mutagenic, or toxic to reproduction), should be on the Candidate list. Therefore, information on these toxic properties has been included in the analysis and proved to be of importance for the listing. But the analysis also showed that various economic parameters played a big role. By combining data of both types, the researchers thus gained a better basis for understanding the overall picture, and thereby a greater confidence in the reliability of the patterns identified in the data.</div> <div><br /></div> <div>“This work allows us to feel confident in our conclusions. It's not just that we 'saw' this, but we have results from a careful statistical analysis to prove it”, says Mikael Gustavsson. </div> <h2 class="chalmersElement-H2">Redesign of the process may be required</h2> <div>&quot;It's not surprising that economic interests influence which chemicals that are regulated, but that these parameters are as significant as our stuyd shows gives us reason to question how effective the system is in removing harmful substances from the market&quot; says Erik Kristiansson. </div> <div><br /></div> <div>Seen from a regulatory perspective, the results of the study indicate that low-hanging fruit have been picked first. Unfortunately, this might lead to difficulties in the future when EU member states try to agree on which additional chemicals that should be included in the Candidate list, because listing locally produced chemicals is more likely to meet stronger political resistance. </div> <div><br /></div> <div> “This might indicate a need to redesign the regulatory process to ensure that hazardousness becomes the most important driver of inclusion on the Candidate List and that hazardous chemicals produced or imported in the EEA are listed, even if they affect the economic interests of European companies”, says Jessica Coria. ​</div> <div><br /></div> <div><a href="https://doi.org/10.1038/s41467-022-34492-2">Read the full study in Nature Communications ​</a></div> <h2 class="chalmersElement-H2">Contact information</h2> <div>Jessica Coria, <a href="mailto:jessica.coria@economics.gu.se">jessica.coria@economics.gu.se</a>, Associate Professor in Economics,  <br />School of Business, Economics and Law, University of Gothenburg. Corresponding Author.<br /> Telephone: +46 31-786 48 67</div> <div><br />Mikael Gustavsson, <a href="mailto:mikael.gustavsson@chalmers.se">mikael.gustavsson@chalmers.se</a>,PhD Department of Economics, University of Gothenburg, and Department of Mathematical Sciences, Chalmers University of Technology/University of Gothenburg.</div> <div><br />Erik Kristiansson, <a href="mailto:erik.kristiansson@chalmers.se">erik.kristiansson@chalmers.se</a>, Professor <br /> Department of Mathematical Sciences, Chalmers University of Technology/University of Gothenburg.<br /> Telephone: +46 31-772 35 21 </div> ​​​​​</div></div> ​​​​​Fri, 02 Dec 2022 07:30:00 +0100https://www.chalmers.se/en/news/Pages/highly-cited-researchers-2022.aspxhttps://www.chalmers.se/en/news/Pages/highly-cited-researchers-2022.aspxChalmers researchers listed among highly cited in 2022 <p><b>Three Chalmers researchers are on the &quot;Highly Cited researchers list&quot; – a list of the most cited, and thereby most influential, researchers in the world. ​</b></p>​The <a href="https://clarivate.com/highly-cited-researchers/">​​Highly Cited Researchers​ list</a> identifies scientists who have demonstrated significant influence through publication of multiple highly cited papers during the last decade. The list is compiled by Clarivate and covers 21 different research categories.​​ <div><br /></div> <div> </div> <div> Three researchers from Chalmers made this year's list, out of a total of just over 60 from Swedish universities. Jens Nielsen, professor, and Johan Bengtsson-Palme, assistant professor, at the Department of Biology and Biological Engineering have both been listed in previous years, and Erik Kristiansson, professor at the Department of Mathematical Sciences is on the list for the first time.</div> <div> </div> <div><br /></div> <div> </div> <div>&quot;I am happy to see that our research still has impact and is used by other researchers!&quot;, says <strong>Jens Nielsen</strong>, who is a pioneer in metabolic systems biology.</div> <div> </div> <div>His research is focused on metabolism linked to the development of human diseases. He told more about his resarch in connection with the presentation of last year's list, <a href="/en/departments/bio/news/Pages/Chalmers-Professor-on-Highly-Cited-Researchers-List.aspx">read about it here</a>.</div> <div> </div> <div><br /></div> <div> </div> <div><strong>Erik Kristiansson's</strong> research involves handling and analysing extremely large data sets, mainly from medicine and molecular biology. The purpose is to increase our understanding of the kinds of information that can be extracted, and what certain conclusions it can provide. An important part of the research involves developing and establishing completely new methods for processing and analysing data. </div> <div> </div> <div>&quot;The result of our work is not the analysis itself. Our methods can, for example, be used to find new medical treatments for infections caused by antibiotic-resistant bacteria or for policy changes in how dangerous chemicals should be handled and assessed&quot;, he says</div> <div> </div> <div><br /></div> <div> </div> <div><strong>Johan Bengtsson-Palme</strong> is active in the research field Systems Biology and combines data-driven bioinformatic approaches with high-throughput molecular methods and the robust theories developed for plant and animal ecology to understand pathogens, microbial communities and their interactions. Johan Bengtsson-Palme and Erik Kristiansson have a number of joint publications, for example on the subject of antibiotic resistance, and they both highlight collaboration and interdisciplinary research as important success factors.</div> <div> </div> <div> &quot;Successful research is very much about finding the right partners for collaboration, who can complement and enhance the compentences of my group, but where the research questions are clearly overlapping&quot;, says Johan Bengtsson-Palme.</div> <h2 class="chalmersElement-H2">Links</h2> <div>More about Erik Kristiansson's research:<br /><a href="/en/Staff/Pages/erik-kristiansson.aspx">Profile page​</a><br /><a href="/en/departments/math/news/Pages/Economic-interests-cloud-hazardous-chemicals-reductions.aspx">Economic interests cloud hazardous chemicals reductions</a></div> <a href="/en/departments/math/news/Pages/research-on-polluting-chemicals-falling-behind.aspx"><div>Research on polluting chemicals falling behind</div></a><div><br /></div> <div>More about Johan Bengtsson-Palme's research:</div> <a href="/en/departments/bio/research/systems-biology/bengtsson-palme-lab/Pages/default.aspx"><div>Bengtsson-Palme lab</div> <div><br /></div></a> <div>More about Jens Nielsen's research:</div> <a href="/en/departments/bio/research/systems-biology/nielsen-lab/Pages/default.aspx"></a><div><a href="/en/departments/bio/research/systems-biology/nielsen-lab/Pages/default.aspx">Nielsen lab</a></div> <div><br /></div> <div> </div> <div>Text: Anneli Andersson and Susanne Nilsson-Lindh</div> ​Wed, 30 Nov 2022 08:00:00 +0100https://www.chalmers.se/en/news/Pages/Opportunity-to-grow-for-Math-coach-online.aspxhttps://www.chalmers.se/en/news/Pages/Opportunity-to-grow-for-Math-coach-online.aspxOpportunity to grow for Math coach online<p><b>​Math coach online is a project that offers free study support in math to pupils from grade 6. The coaching service is run by students at university level. Thanks to a grant from Erling-Persson foundation, the initiative will be spread across the country and there will be more math coaches available.</b></p>​<span style="background-color:initial">An example of what a chat conversation in Math coach online can look like. The pupils who use the service can be completely anonymous, and the coaches help with everything from simple calculation tasks to difficult integrals.</span><div><br /><span style="background-color:initial"></span><div>The project started in 2009 and is currently organised as a network between KTH in Stockholm, Linköping University and Chalmers. Four years ago, a node was also started at Aston University in Birmingham as a parallel operation with coaching in English. The activities at Chalmers are led by Jonny Lindström, senior lecturer at Mathematical Sciences, and Dorotea Blank, who is responsible for school collaboration and works with broadened recruitment. The students who staff the project at Chalmers are both engineering students and future subject teachers in mathematics. Last year, together with the coaches at other universities, they had 3,713 conversations with pupils around Sweden, a total of almost 2,400 hours of supervision in mathematics.<span style="background-color:initial"> </span></div> <h3 class="chalmersElement-H3">Research is part of the project</h3> <div>All chat conversations are saved in a database and used in the extensive research that is part of Math coach, and which is led by the Department of Digital Learning at KTH. The research has so far resulted in six research articles, ten conference papers and a doctoral dissertation. In addition, about ten degree projects have been completed where Math coach has been studied. The research is conducted with the aim of developing digital learning.</div> <div><br /></div> <div>Follow-ups that have been done show that pupils from all grade levels use Math coach, and regardless of their level of knowledge, pupils have the opportunity to discuss tasks and solutions in a way that is not always possible in the classroom during lectures. </div> <div><br /></div> <div>”The strength is that it is about coaching, not about getting the solution or an answer directly. And since it is online, it is possible to help several people at the same time” says Jonny Lindström and emphasizes that the project is not intended to replace regular teaching. <span style="background-color:initial">”Traditional classroom teaching works best, as the pandemic has proven. This is a complement” he says.</span></div> <h3 class="chalmersElement-H3">More coaches can help more pupils</h3> <div>So far, the project has been financed with public funds, but the universities involved has now been awarded a grant of SEK 8 million from the Erling Persson Foundation. It means that the project can expand and take on more pupils from municipalities that have not signed agreements before. </div> <div><br /></div> <div>The Erling-Persson Foundation was founded by Stefan Persson in 1999, in memory of his father Erling Persson, who started Hennes &amp; Mauritz.</div> <div><br /></div> <div>“The foundation has three main purposes that they want to support: entrepreneurship, research and promoting the development of children and young people. Math coach involves all three!“ says Dorotea Blank.</div> <img src="/SiteCollectionImages/20220701-20221231/Dorotea%20Blank.jpg" alt="Dorotea Blank" class="chalmersPosition-FloatRight" style="margin-top:0px;margin-bottom:0px;margin-left:0px;height:369px;width:175px" /></div> <div>​<br /> <div><br /></div> <div>The vision is to scale up the project to the national level, with coaches at all major universities. </div> <div><br /></div> <div><span style="background-color:initial">“</span><span style="background-color:initial">Th</span><span style="background-color:initial">e easy access to Math coach online helps to even out the differences between pupil’s opportunities regardless of where they live. And the most important thing with this service is that they get help with their homework regardless of their prior knowledge and without being evaluated. We hope ​​that it will increase their interest in mathematics in the long run and make the subject more enjoyable!” Says Dorotea Blank.</span><br /></div> <div><br /></div> <div>In addition to benefiting pupil’s directly, the investment increases the competence in digital pedagogy for future teachers and engineering students who runs the service. All coaches must also take a basic online course at KTH about online teaching before starting as a coach, which develop and ensures their pedagogical competence.</div> <div><br /></div> <div><strong>Text: </strong>Anneli Andersson och Julia Jansson</div> <div><br /></div> <span style="background-color:initial"><strong>Do you want to know more about the initiative or how you can apply to become a Math coach yourself?​</strong></span></div> <div><span style="background-color:initial"><div>Dorotea Blank, responsible for school outreach activities, Chalmers</div> <div>031 772 25 55, dorotea.blank@chalmers.se</div></span></div>Wed, 09 Nov 2022 11:00:00 +0100https://www.chalmers.se/en/departments/math/news/Pages/Funding-Swedish-Research-Council-2022.aspxhttps://www.chalmers.se/en/departments/math/news/Pages/Funding-Swedish-Research-Council-2022.aspxFunding from the Swedish Research Council 2022<p><b>​​The following employees at Mathematical sciences have received grants from the Swedish Research Council's call within Natural and Engineering Sciences 2021.</b></p>​Julia Brandes – Diofantiska ekvationer mellan analys och geometri<p></p> <p>Klas Modin – Långtidsbeteende för tvådimensionella inkompressibla flöden via kvantisering</p> <p>Andreas Rosén – Glesa uppskattningar för randvärdesproblem</p> <p><span style="background-color:initial">Lars Martin Sektnan – Att hitta kanonisk metriker inom komplex geometri</span></p> <p>Genkai Zhang – Representationer av Liegrupper. Harmonisk och komplex analys på symmetriska och lokalt symmetriska rum</p> <p><br /></p> <p><a href="/en/news/Pages/funding-from-swedish-research-council-2022.aspx">List of funded projects at Chalmers University of Technology &gt;&gt;</a></p> <p><a href="https://www.gu.se/nyheter/vr-bidrag-till-14-projekt-inom-naturvetenskap">List of funded projects at University of Gothenburg (in Swedish) &gt;&gt;​</a></p> <p><br /></p> <p><a href="https://www.vr.se/english/applying-for-funding/decisions/2022-08-17-natural-and-engineering-sciences.html">The complete lists of grants (in Swedish) and statistics about them &gt;&gt;</a>​​​</p>Mon, 07 Nov 2022 14:00:00 +0100https://www.chalmers.se/en/departments/math/news/Pages/Overcrowded-housing-a-key-factor-during-pandemic.aspxhttps://www.chalmers.se/en/departments/math/news/Pages/Overcrowded-housing-a-key-factor-during-pandemic.aspxOvercrowded housing a key factor during pandemic<p><b>​Residential overcrowding, low educational attainment and low income had a crucial impact on how hard the pandemic hit various groups in the community. This is shown by a study from the University of Gothenburg co-authored by Ottmar Cronie, lecturer at Mathematical Sciences.</b></p>​​For the present study, Statistics Sweden (SCB) and the Public Health Agency of Sweden provided the register-derived data on which the researchers based their analyses. They thus had access to information about all Sweden’s inhabitants concerning both lifestyle variables and confirmed COVID-19 cases.<p></p> <p>The results classify certain areas as characterized by high COVID-19 risk. Their common features were a high proportion of overcrowded households, low socioeconomic status (low educational attainment and income), a high proportion of inhabitants with an immigrant background, and a large share of employees in health and social care.</p> <p><a href="https://www.gu.se/en/news/overcrowded-housing-a-key-factor-during-pandemic">Read more at the University of Gothenburg web &gt;&gt;</a></p>Thu, 20 Oct 2022 12:25:00 +0200https://www.chalmers.se/en/news/Pages/Chalmers-welcomes-new-professors.aspxhttps://www.chalmers.se/en/news/Pages/Chalmers-welcomes-new-professors.aspxChalmers welcomed new professors<p><b>​On 23 September it was time for Chalmers' professorial inauguration in Runan. The professors started their activities at Chalmers on 1 July 2020 until 30 June 2022.​</b></p>​<span style="font-size:14px"><span style="background-color:initial">The professor installation is an old tradition at Chalmers and an important part of welcoming new professors while spreading information about the subject areas in which the professors work.</span></span><div><span style="font-size:14px">A total of 22 professors were installed during the evening. At the same time, artistic professors, adjunct professors, visiting professors, affiliated professors, and research professors were also presented.</span></div> <div><span style="font-size:14px"><br /></span></div> <div><span style="font-size:14px"><strong>There is also an increase in the number of female professors</strong></span></div> <div><span style="font-size:14px">&quot;It is with pleasure that I can state that we are slowly equalizing the gender balance at the professorial level. This year, 32 percent of the installed professors are women, and the proportion of women in Chalmers' professors' college has increased to around 18 percent,&quot; says Stefan Bengtsson, Principal at Chalmers.</span></div> <div><span style="font-size:14px">Conference speaker Philip Wramsby welcomed and guided the guests during the evening. Both the rector and union chairman Isac Stark gave speeches. Newly installed professor Maria Abrahamsson gave a speech in physical chemistry. </span></div> <div><span style="font-size:14px"><br /></span></div> <div><span style="font-size:14px">The entertainment was provided by Duratrion and the Chalmers choir. After the ceremony, a dinner was held at Kårrestaurangen where all participants' families and friends could celebrate together with the new professors. </span><span style="background-color:initial">S</span><span style="background-color:initial">ince 1959, Chalmers alumnus and composer Jan Johansson's work &quot;Life is beautiful&quot; has traditionally opened all Chalmers sessions. Due to associations with Russia and the war in Ukraine, it has been replaced with &quot;Here comes Pippi Longstocking&quot;, another famous piece by Jan Johansson. During the dinner, Professor Àrni Halldòrsson gave a speech. </span></div> <div><span style="background-color:initial"><br /></span></div> <div><span style="font-size:14px"></span><span></span><div><span style="font-size:14px"><strong>The professors presented:</strong></span></div> <div><span style="font-size:14px">Maria Abrahamsson, Physical Chemistry, Department of Chemistry and Chemical Engineering.</span></div> <div><span style="font-size:14px">Mohammad Al-Emrani, Steel and timber structures, Department of Architecture and Civil Engineering.</span></div> <div><span style="font-size:14px">Derek Creaser, Chemical Engineering, Department of Chemistry and Chemical Engineering. </span></div> <div><span style="font-size:14px">Isabelle Doucet, Theory and History of Architecture, Department of Architecture and Civil Engineering. </span></div> <div><span style="font-size:14px">Marco Dozza, Active Safety and road-user behavior, Department of Mechanics and Maritime Sciences.</span></div> <div><span style="font-size:14px">Maria Elmquist, Innovation Management, Department of Technology Management and Economics.</span></div> <div><span style="font-size:14px">Jonas Fredriksson, Mechatronics, Department of Electrical engineering. </span></div> <div><span style="font-size:14px">Ida Gremyr, Quality Management, Department of Technology Management and Economics. </span></div> <div><span style="font-size:14px">Àrni Halldòrsson, supply chain management, Department of Technology Management and Economics. </span></div> <div><span style="font-size:14px">Eduard Hryha, Powder Metallurgy, and Additive Manufacturing, Department Industrial and materials science.</span></div> <div><span style="font-size:14px">Ann-Margret Hvitt Strömvall, Environmental, and Urban Water Engineering, Department of Architecture and Civil Engineering. </span></div> <div><span style="font-size:14px">Christoph Langhammer, Physics, Department of Physics. </span></div> <div><span style="font-size:14px">Mats Lundqvist, Entrepreneurship Didactics, Department of Technology Management and Economics.</span></div> <div><span style="font-size:14px">Max Jair Ortiz Catalán, Bionics, Department of Electrical Engineering.</span></div> <div><span style="font-size:14px">Angela Sasic Kalagasidis, Building Physics, Department of Education, Architecture and Civil Engineering. </span></div> <div><span style="font-size:14px">Elsebeth Schröder, Theoretical Physics, Department of Microtechnology and Nanoscience.</span></div> <div><span style="font-size:14px">Ioannis Sourdis, Computer Engineering, Department of Computer Science and Engineering.</span></div> <div><span style="font-size:14px">Lennart Svensson, Signal Processing, Department of Electrical engineering. </span></div> <div><span style="font-size:14px">Fredrik Westerlund, Chemical Biology, Department of Biology and Biological Engineering.</span></div> <div><span style="font-size:14px">Mikael Wiberg, Interaction Design, Department of Computer Science and Engineering.</span></div> <div><span style="font-size:14px">Torsten Wik, Automatic Control, Department of Electrical engineering. </span></div> <div><span style="font-size:14px">Britt-Marie Wilén, Environmental and Wastewater Engineering, Department of Architecture and Civil Engineering.</span></div> <div><span style="font-size:14px"><br /></span></div> <div><span style="font-size:14px"><strong>Artistic professors:</strong></span></div> <div><span style="font-size:14px">Anna-Johanna Klasander, Urban Design, Department of Architecture and Civil Engineering. </span></div> <div><span style="font-size:14px"><br /></span></div> <div><span style="font-size:14px"><strong>Adjunct professors:</strong></span></div> <div><span style="font-size:14px">Morgan Andersson, Architecture for Living and Care, Department of Architecture and Civil Engineering.</span></div> <div><span style="font-size:14px">Helmi Attia, Monitoring and control of manufacturing processes, Department of Industrial and Materials Science.</span></div> <div><span style="font-size:14px">Mingquan Bao, Microwave Electronics, Department of Microtechnology and Nanoscience.</span></div> <div><span style="font-size:14px">Mikael Coldrey, Communication systems, Department of Electrical Engineering. </span></div> <div><span style="font-size:14px">Ola Engqvist, Artificial Intelligence and Machine Learning based Drug Design, Department of Computer Science and Engineering. </span></div> <div><span style="font-size:14px">Hilda Esping Nordblom, Housing Architecture, Department of Architecture and Civil Engineering.</span></div> <div><span style="font-size:14px">Rikard Fredriksson, Integrated vehicle and Road Safety, Department of Mechanics and Maritime Sciences. </span></div> <div><span style="font-size:14px">Renaud Gutkin, Computational mechanics of polymer materials, Department of Industrial and Materials Science.</span></div> <div><span style="font-size:14px">Karin Karlfeldt Fedje, Sustainable engineering of contaminated material, Department of Architecture and Civil Engineering. </span></div> <div><span style="font-size:14px">Daniel Karlsson, Electric Power System, Department of Electrical Engineering. </span></div> <div><span style="font-size:14px">Jenny Larfeldt, Energy Conversion, Department of Space, Earth, and Environment. </span></div> <div><span style="font-size:14px">Marie Larsson, Architecture and Care, Department of Architecture and Civil Engineering. </span></div> <div><span style="font-size:14px">Mikael Lind, Maritime Informatics, Department of Mechanics, and Maritime Sciences. </span></div> <div><span style="font-size:14px">Nils Lübbe, Vehicle Safety Analysis, Department of Mechanics, and Maritime Sciences. </span></div> <div><span style="font-size:14px">Henrik Magnusson, Architecture and Care, Department of Architecture and Civil Engineering. </span></div> <div><span style="font-size:14px">Anders Puranen, Nuclear Chemistry, Department of Chemistry and Chemical Engineering. </span></div> <div><span style="font-size:14px"><br /></span></div> <div><span style="font-size:14px"><strong>Guest professors: </strong></span></div> <div><span style="font-size:14px">Simone Fischer-Hübner, Computer Science, Department of Computer Science and Engineering.</span></div> <div><span style="font-size:14px">Steven A. Gabriel, Mechanical Engineering, Department of Space, Earth, and Environment.</span></div> <div><span style="font-size:14px">Michael Kokkolaras, Construction optimization, Department of Industrial and Materials Science.</span></div> <div><span style="font-size:14px">Åsa Lindholm Dahlstrand, Innovation Studies, Department of Technology Management and Economics.</span></div> <div><span style="font-size:14px">Doina Petrescu, Urban design and planning, Department of Architecture and Civil Engineering.</span></div> <div><span style="font-size:14px">Christopher Robeller, digital timber design, and production, Department of Architecture and Civil Engineering.</span></div> <div><span style="font-size:14px"><br /></span></div> <div><span style="font-size:14px"><strong>Affiliated professors:</strong></span></div> <div><span style="font-size:14px">David Bennet, Operations Management, Department of Technology management and economics.</span></div> <div><span style="font-size:14px">Anna Kadefors, Technology Management, Department of Technology Management and Economics.</span></div> <div><span style="font-size:14px">Mihály Kovács, Mathematics, Department of Mathematical Sciences. </span></div> <div><span style="font-size:14px">Ermin Malic, Physics, Department of Physics. </span></div> <div><span style="font-size:14px">Vincenzo Palermo, Graphene Research, Department of Industrial and Materials Science.</span></div> <div><span style="font-size:14px">Ulf Petrusson, Entrepreneurship and Strategy, Department of Technology Management and Economics. </span></div> <div><span style="font-size:14px">Finn Wynstra, Supply and Operations Management, Department of Technology Management and Economics. </span></div> <div><span style="font-size:14px"><br /></span></div> <div><span style="font-size:14px"><strong>Research professors:</strong></span></div> <div><span style="font-size:14px">Paolo Falcone, Mechatronics, Department of Electrical engineering. </span></div> <div><span style="font-size:14px">Bengt Johansson, Internal Combustion Engine Technology, Department of Mechanics and Maritime Sciences. </span></div> <div><span style="font-size:14px">Tomas Kåberger, Industrial Energy Policy, Technology Management, and Economics. </span></div> <div><span style="font-size:14px">Verena Siewers, Microbial Synthetic Biology, Department of Biology and Biological Engineering. </span></div></div>Tue, 27 Sep 2022 00:00:00 +0200https://www.chalmers.se/en/departments/math/news/Pages/Describing-the-vacuum-in-spacetime.aspxhttps://www.chalmers.se/en/departments/math/news/Pages/Describing-the-vacuum-in-spacetime.aspxDescribing the vacuum in spacetime<p><b>​Time and space shape our universe. In his doctoral thesis, Mingchen Xia has approached the question of how to describe a spacetime vacuum through pluripotential theory.</b></p><p><img src="/SiteCollectionImages/Institutioner/MV/Nyheter/MingchenXia250x300.jpg" class="chalmersPosition-FloatRight" alt="Mingchen Xia" style="margin:5px" />The concept “spacetime” received its precise mathematical description in Albert Eninstein’s general theory of relativity, published just over a century ago. In this, the shape of the universe is described as a four-dimensional surface where the shape is determined by the matter content of space. The laws that govern the movement of spacetime can in mathematical terms be reduced to equations, called Einstein field equations.</p> <p>Mingchen Xia studies the geometry of the vacuum that would appear if all matter content of space would be removed. The problem is that the equations are nonlinear, which makes it difficult to find a direct solution. Several different approaches have been developed to obtain solutions, and one of the most recent is to use techniques from pluripotential theory where notions and special metrics from complex geometry and complex analysis are used.</p> <h2>Singular instead of regular functions</h2> <p>In the three articles of the thesis, the first deals with some open problems of the area. In the second, Mingchen has made use of the results from the first to gather conditions that guarantee the existence of the metrics, and in the third he explores what happens if there are no such metrics. The real innovation in the thesis is the applications of singular quasi-plurisubharmonic functions to the vacuum problem, whereas previously the emphasis has been on the regular functions.</p> <p>Mingchen’s interest for mathematics began when he was about ten years old, although he then did not know very much about it. He started to study more advanced mathematics and was most fascinated by the rigorous proofs and the structure behind it all. When he did his master’s studies in Paris all students were supposed to have an internship. His advisor suggested an available colleague as his future thesis advisor, who turned out to be Robert Berman in Gothenburg. After taking his master’s degree, Mingchen decided to come to Sweden for doctoral studies.</p> <h2>Great possibilities to do the research you want</h2> <p>– I did some research before, so I knew what to expect. Gothenburg has been a good place to live in and to do a PhD, although I do not like the winter! Compared to a big place like Paris there is a limited number of mathematicians if you are interested in a very specific topic, which can cause difficulties. But it is very cozy here and you have great possibilities to do the research you want, the advisors do not press too hard to make you go in a certain direction. In my opinion, to find the direction you want to go in yourself is one important part of being a PhD student.</p> <p>After the thesis defence, Mingchen is returning to Paris where he will have a postdoctoral position, financed by the Wallenberg Foundation.<br /><span style="background-color:initial"><br /><em>M</em></span><span style="background-color:initial"><em>i</em></span><span style="background-color:initial"><em>ngchen Xia will defend his PhD thesis “<a href="https://research.chalmers.se/en/publication/?id=531779">Pluripotential-theoretic methods in K-stability and the space of Kähler metrics</a>” on October 5 at 14.30 in lecture hall Pascal, Hörsalsvägen 1. Supervisor is Robert Berman, assistant supervisor David Witt Nyström.</em><br /><br /><strong>Text and photo</strong>: Setta Aspström</span></p> Mon, 26 Sep 2022 14:05:00 +0200https://www.chalmers.se/en/departments/math/news/Pages/Faculty-of-Science-2022.aspxhttps://www.chalmers.se/en/departments/math/news/Pages/Faculty-of-Science-2022.aspxAwarded by the Faculty of Science<p><b>​Ulla Dinger receives the Faculty of Science's 2022 Pedagogical Award, and Barbara Schnitzer receives the Faculty of Sciences 2022 Doctoral Thesis Award.</b></p><strong>​<img src="/SiteCollectionImages/Institutioner/MV/Profilbilder/ulladinger.jpg" alt="Ulla Dinger" class="chalmersPosition-FloatRight" style="margin:5px" />Pedagogical A</strong><span style="background-color:initial"><strong>ward:</strong></span><p>Ulla Dinger has been deeply involved in the department's undergraduate education during her long tenure at the Department of Mathematical Sciences. For several years, she was both the education officer and the programme manager for the Mathematics Programme and subsequently for the Basic Science Year. Ulla has also been a driving force in course development. Many years ago, she developed the introductory course in the Mathematics programme into a problem-based format. The course is often highlighted by students as an important, motivating and fun course where the format strongly contributes to their early development as mathematicians. </p> <p>She has also been an examiner for over twenty years on an advanced level analytics course which is a key course for advanced level study. Here she has built on the idea of the importance of students being trained to communicate mathematics. She has also done a great deal of work in developing the mathematics courses in the foundation year and pioneered the introduction of partially digital examinations. In conclusion, no one can match Ulla in terms of commitment to the development of the content, form and quality of undergraduate education at the Department of Mathematical Sciences.</p> <p><a href="https://www.gu.se/en/news/ulla-dinger-receives-faculty-of-sciences-2022-pedagogical-award">Read an interview with Ulla Dinger about the award on the University of Gothenburg web &gt;&gt;</a></p> <p><strong><img src="/SiteCollectionImages/Institutioner/MV/Nyheter/BarbaraSchnitzer170x220.jpg" alt="Barbara Schnitzer" class="chalmersPosition-FloatRight" style="margin:5px" />Doctoral Thesis Award:</strong></p> <p>Barbara Schnitzer’s thesis contributes to a better understanding of ageing in unicellular organisms, moving the field toward large-scale models to investigate synergistic effects of multiple pathways on longevity and health span. In her thesis, Barbara developed the largest available mathematical model of yeast replicative ageing that connects three major ageing processes: damage accumulation, nutrient signalling and metabolism. </p> <p>The model is also validated for many protein knockouts and suggests intervention strategies that lead to prolonged health span, laying a foundation for one of the key priorities of UN sustainability goals – finding equitable solutions to ensure that we are not only living longer but that we are staying healthier longer in life. Barbara has worked alongside molecular biologists, showing very good coordination and planning skills. She has also demonstrated a strong will to take a leading role and maturity to drive the work forward in the multidisciplinary team.</p> <p><a href="https://www.gu.se/en/news/barbara-schnitzer-receives-this-years-doctoral-thesis-award">​Read an interview with Barbara Schnitzer about the award on the University of Gothenburg web &gt;&gt;</a></p>Thu, 22 Sep 2022 08:50:00 +0200https://www.chalmers.se/en/departments/math/news/Pages/non-invasive-effective-liver-surgery-with-a-new-technique.aspxhttps://www.chalmers.se/en/departments/math/news/Pages/non-invasive-effective-liver-surgery-with-a-new-technique.aspxNon-invasive, effective liver surgery with a new technique<p><b>A brand new technique to improve and facilitate liver tumour surgery. This is the result of a collaboration between Chalmers researchers and surgeons at Sahlgrenska University Hosopital. Using augmented reality, surgeons are guided in real time during the operation.​</b></p>Operating on cancerous tumours of the liver is difficult for a number of reasons. The liver is an organ with many blood vessels, and liver tumours are usually embedded in the tissue. “The challenge is to locate the tumour and remove it with the right margins to save as much of the liver tissue as possible, which the patient needs to keep,” says Mårten Falkenberg, a surgeon at Sahlgrenska University Hospital, who helped develop the new technique. <h2 class="chalmersElement-H2"> Increased need for guidance</h2> <div>There are currently two established methods for liver surgery. One is open surgery, in which the abdominal cavity is opened so that the surgeon can look into the abdomen and feel the location of the tumour with their fingers to some extent. The other method is keyhole surgery. A camera is inserted through a hole in the abdominal wall, the surgeon’s instrument through another, and the surgeon works with the help of camera images on a screen. “We actually prefer keyhole surgery because it’s less invasive for the patient, but the ability to feel the tumour with your fingers disappears, which increases the need for guidance to show you where it is,” says Mårten Falkenberg. Navigating by camera images alone is difficult. The liver is a homogeneous organ. It simply looks almost the same from different angles. This is where the new technique comes in. A 3D scan of the liver is already standard before surgery. The idea was developed by researchers including Torbjörn Lundh and Klas Modin at the Department of Mathematical Sciences at Chalmers University of Technology and is based on enhancing the images that are taken. <img src="/SiteCollectionImages/Institutioner/MV/Nyheter/Navari/KModin-portr.gif" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:185px;height:185px" /><br /><br /></div> <div> “We use augmented reality, based on the pre-operative scan and newly developed algorithms, to produce an image of what the tumour looks like and where it is located. This image is superimposed on the camera image that the surgeons see during the operation, as a guide for how to cut to get the tumour out,” says Klas Modin.</div> <h2 class="chalmersElement-H2"> Making use of existing information</h2> <div> The particular feature of this technology is that it is based on existing information and technical equipment. Images based on the pre-operative scan are displayed in real time as a layer on top of the camera images during the operation. After having attended a liver operation at Sahlgrenska University Hospital, Klas Modin and Torbjörn Lundh applied this experience when they worked on their proposal. One thing that made a strong impression was that there is already a great deal of technical equipment in the operating theatre, and large amounts of information are constantly being shared. <img src="/SiteCollectionImages/Institutioner/MV/Nyheter/Navari/TLundh-portr.gif" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:185px;height:185px" /><br /><br /></div> <div> “Based on how operations are currently performed, with the aim of being minimally invasive, i.e. keyhole surgery, we want to contribute a solution that is also minimally invasive in terms of the surgeons’ working environment,” says Torbjörn Lundh. </div> <div><br /></div> <div><br /></div> <h3 class="chalmersElement-H3">More about the research</h3> <div>The research behind the method began in 2016. In 2021, the company <a href="https://www.chalmersventures.com/startups/navari/">Navari Surgical</a> was founded in collaboration with the business incubator Chalmers Ventures. The aim of the company is to further develop the technique and make it available on the market so that it can be used in healthcare. </div> <h3 class="chalmersElement-H3">For more information, contact:</h3> <div> <ul><li>Torbjörn Lundh, Professor, Department of Mathematical Sciences, Chalmers University of Technology<br /> +46 31 772 35 03, <a href="mailto:torbjorn.lundh@chalmers.se">torbjorn.lundh@chalmers.se</a></li> <li>Klas Modin, Associate Professor, Department of Mathematical Sciences, Chalmers University of Technology <br /> 031 772 35 30, <a href="mailto:klas.modin@chalmers.se">klas.modin@chalmers.se</a> </li></ul> </div> ​​​​​​​Wed, 24 Aug 2022 11:00:00 +0200https://www.chalmers.se/en/news/Pages/IVA-100-list-2022.aspxhttps://www.chalmers.se/en/news/Pages/IVA-100-list-2022.aspxMost projects from Chalmers on IVA’s 100 list 2022 <p><b>The 100-list highlights up-to-date research with business potential from Swedish universities. The theme for this year is technology in the service of humanity. Thirteen projects from Chalmers have been selected. </b></p>​The researchers have contributed with research projects that offer great value and potential for utilisation for society, through avenues such as industrial commercialisation, business development, or other types of impact. ​<div>“It is gratifying that we are so well represented on the 100 list. Chalmers has a strong focus on innovation and entrepreneurship” says Mats Lundqvist, Vice President of Utilisation at Chalmers University of Technology.</div> <div><br /><div><div><strong style="background-color:initial">The selected projects from Chalmers 2022:</strong><br /></div> <div><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:20px;background-color:initial"><br /></span></div> <div><strong style="background-color:initial"></strong><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:20px;background-color:initial">Architecture and Civil Engineering Project: </span></div> <div><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:20px;background-color:initial"></span><strong style="font-family:inherit;background-color:initial">Real time optimization of drinking water treatment</strong></div></div> <div> <div><span style="background-color:initial">The innovation of Kathleen Murphy and fellow colleagues measure the quality and reactivity of freshwater resources in real time, and predict the success of drinking water treatment. Their solution will be used to optimize operational conditions at drinking water treatment plants, reducing the need for chemicals and infrastructure and reducing emissions and waste. The patent pending solution, including the teams unique algorithms, will make drinking water treatment cheaper and more sustainable.</span></div> <div>Researcher: <a href="/en/Staff/Pages/murphyk.aspx">Kathleen Murphy</a></div> <div><a href="/en/departments/ace/news/Pages/Real-time-optimized-drinking-water-treatment-on-IVA100-list.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Real time optimized drinking water treatment</a></div> <div><br /></div> <div><div> ​<span style="background-color:initial;color:rgb(33, 33, 33);font-family:inherit;font-size:20px">Biology and Biological Engineering</span></div> <p class="chalmersElement-P">Project: <strong>Fungi for the production of protein of the future</strong></p> <p class="chalmersElement-P"><span style="background-color:initial">Alternative protein sources such as fungi (mycoprotein) can lead to 95 percent less carbon dioxide emissions than beef. The vision is that the protein of the future is produced by fungi, which convert bio-based residual streams from industry. The fungi are grown in closed bioreactors with little impact on the external environment. </span> ​</p> <p class="chalmersElement-P"><span style="background-color:initial">Researchers: </span><a href="/sv/personal/Sidor/nygardy.aspx">Yvonne Nygård </a><span style="background-color:initial">and </span><a href="/en/Staff/Pages/eric-oste.aspx">Eric Öste </a></p> <p class="chalmersElement-P"><br /></p> <p class="chalmersElement-P">Project: <strong>Stabilizing seafood side-streams allowing full use for food production </strong><br /></p> <p class="chalmersElement-P">The demand for fish is steadily increasing in response to dietary recommendations, population growth and wishes to consume more climate-friendly protein sources. We therefore need to convert more of each landed fish into food, as today mainly the fillet is used, i.e., only 40-50 per cent of the weight. <br /></p> <p class="chalmersElement-P"><span style="background-color:initial">Researchers: </span><a href="/en/staff/Pages/Ingrid-Undeland.aspx">Ingrid Undeland</a><span style="background-color:initial">, </span><a href="/en/Staff/Pages/haizhou.aspx">Haizhou Wu,​</a><span style="background-color:initial"> </span><a href="/en/staff/Pages/khozaghi.aspx"> Mehdi Abdollahi</a><span style="background-color:initial"> and </span><a href="/en/Staff/Pages/bita-forghani.aspx">Bita Forghani</a></p> <p class="chalmersElement-P"><a href="/en/departments/bio/news/Pages/Projects-on-sustainable-food-on-IVA’s-100-list.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Projects on sustainable food on IVA’s 100 list</a></p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"><span style="font-family:inherit;font-size:20px;background-color:initial">Chemistry and Chemical Engineering  </span><br /></p> <p class="chalmersElement-P">Project: <strong>Recycling and remanufacturing of indium based semiconductor materials. </strong></p> <p class="chalmersElement-P"><span>You are probably reading this text looking through a transparent conductive material called indium tin oxide (ITO). It is the backbone of all electronic screen​s (LCD, LED, and touch screens), and some solar cell technologies. During the manufacturing of these devices, 30 - 70% of the material becomes production waste. Almost 75% of indium is used for ITO manufacturing and it is accepted as a critical raw material due to its importance in the electronic industry. It is a minor element of the earth’s crust and is unevenly distributed. It's recycling from industrial waste is challenging and requires several stages. In our technology, indium recovery is simplified instead of complicated processing stages and integrated into the ITO powder production to reproduce ITO material.​</span><strong><br /></strong></p> <p class="chalmersElement-P"><span style="background-color:initial">Researcher: </span><a href="/en/staff/Pages/Burcak-Ebin.aspx">Burcak Ebin</a></p> <p class="chalmersElement-P"><br /></p> <p class="chalmersElement-P"><a href="/en/staff/Pages/Burcak-Ebin.aspx"></a>Project: <strong>High-Quality Graphene and Highly Thermal Conductive Graphene Films Produced in Eco-friendly ways</strong><br /></p> <p class="chalmersElement-P"><strong></strong><span style="background-color:initial">The heat generated from ubiquitous miniaturized electronic devices needs to be dissipated by materials that are highly thermally conductive, lightweight, flexible, mechanically robust and, most importantly, manufactured in a sustainable way. Our idea includes two interconnected steps: 1) Eco-friendly production of high-quality graphene in a large-scale; and 2) Production of highly thermal-conductive graphene films with low environmental impact and low cost. The graphene films are expected to replace the current metal films and other thermally conductive films produced in the high cost of environment, and therefore contribute to the transition to a green industry.</span></p> <p class="chalmersElement-P"><span style="background-color:initial">Researcher: </span><a href="/sv/personal/Sidor/ergang.aspx">Ergang Wang</a></p> <p class="chalmersElement-P"><br /></p> <span></span><p class="chalmersElement-P"><span style="background-color:initial">Project: <span style="font-weight:700">Adsorbi - cellulose-based foams for air pollutants capture  </span></span><br /></p> <p class="chalmersElement-P"><span style="background-color:initial">After finishing her doctoral studies at the department of Chemistry and Chemical Engineering Kinga Grenda founded the start-up company Adsorbi together with Romain Bordes, researcher at the department. She was recently named one of ten entrepreneurs to keep an eye on by Swedish Incubators and Science Parks.</span></p> <p class="chalmersElement-P">Researcher: <span style="background-color:initial">Kinga Grenda  </span><br /></p> <p class="chalmersElement-P"></p> <p class="chalmersElement-P"><span style="background-color:initial"><a href="https://adsorbi.com/" target="_blank"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />More about the research and start-up company Adsorbi </a></span><span style="background-color:initial"><font color="#1166aa"><span style="font-weight:700">(external link)</span></font></span></p> <p class="chalmersElement-P"><br /></p> <p class="chalmersElement-P"><a href="/sv/personal/Sidor/ergang.aspx"></a><a href="/en/departments/chem/news/Pages/Chemistry-research-on-IVA-100-list-.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Chemistry research on IVA 100 list | Chalmers​ </a></p> <p class="chalmersElement-P"><br /></p> <p class="chalmersElement-P"><span style="font-family:inherit;font-size:20px;background-color:initial">Computer Science and Engineering ​</span><br /></p> <div>Project: <strong>EmbeDL </strong><br /></div> <div>AI has achieved remarkable successes but at a price – neural network models are very large and need a lot of resources to train and deploy, thus leaving a very large energy footprint. Our research is about how to reduce the size of the neural networks, without sacrificing much in accuracy, and making the best use of diverse hardware so that AI can be deployed in an efficient and less energy consuming way to solve a specific problem. <br /></div> <div><br /></div> <div>Project:<strong>Repli5 </strong><br /></div> <div>The research is about creating digital twins and synthetic data. A digital twin is a replica of the real world in silico, which can be used to test and verify systems very efficiently and cheaply instead of tests in the real world which are costly, slow and error prone. Digital twins can be used to generate synthetic data to train AI systems efficiently without the need to collect real world data and annotating them manually which is costly, slow, noisy and error prone. <br /></div> <div><span style="background-color:initial">Researcher: </span><a href="/en/staff/Pages/dubhashi.aspx">Devdatt Dubhashi </a></div> <div><br /></div> <div><span style="background-color:initial">Project: </span><strong style="background-color:initial">Dpella</strong><br /></div> <div>The world is collecting a massive amount of individuals data with the intention of building a human-centered future based on data insights. The huge challenge is how to achieve these insights that will shape the future, respecting privacy of individuals and complying with GDPR. We solve this by developing a technology for creating privacy-preserving analytics based on the mathematical framework of Differential Privacy – a new gold standard for data privacy. With our patented IP research, we provide a Privacy-as-a-service solution will enable data flows, creating the inter-organization value required to achieve a digital human-centred future.</div> <div><span style="background-color:initial">Researcher: </span><span style="background-color:initial"><a href="/en/staff/Pages/russo.aspx">Alejandro Russo</a></span></div> <div><span style="background-color:initial"><br /></span></div> <div><span style="background-color:initial"><a href="/en/staff/Pages/russo.aspx"></a></span><span style="background-color:initial">Project: <strong>ZeroPoint Technologies </strong></span></div> <div><span style="background-color:initial"></span><span style="background-color:initial">The dramatic increase of computers' processing power places high demands on efficient memory storage. A few players today have control over processor development by owning and controlling processor architectures. Chalmers with the spin-off company ZeroPoint Technologies develops technologies for computers' internal memory that are faster and less energy-intensive and are developed to fit into an open processor architecture. This provides basic conditions for smart industry. </span></div> <div><span style="background-color:initial"></span><span></span><span style="background-color:initial">Researcher: </span><span style="background-color:initial"><a href="/en/staff/Pages/per-stenstrom.aspx">Per Stenström​</a></span></div> <div><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:20px;background-color:initial"><br /></span></div> <div><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:20px;background-color:initial">Industrial and Materials Science</span><br /></div> <div> <div>Project: <strong>Design for energy resilience in the everyday</strong><br /></div> <div>Our increasing dependence on electrical and connected products is unsustainable from a resource point of view. It also makes us vulnerable in a future energy system where more renewable sources and climate change increase the probability of power shortages and power outages. To be able to handle disruptions in electricity deliveries, and at the same time live a good and meaningful everyday life, knowledge, new design guidelines for product development and energy-independent alternatives are required.<br /></div> <div><span style="background-color:initial">Researcher: </span><a href="/en/Staff/Pages/helena-stromberg.aspx">Helena Strömberg</a><br /></div> <div><a href="/en/departments/ims/news/Pages/Design-for-energyresilience-in-the-everyday.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Design for energy resilience in the everyday</a> </div></div> <div><br /></div> <div><p class="chalmersElement-P" style="font-size:20px">Physics</p> <p class="chalmersElement-P">Project: <strong>Nanofluidic Scattering Microscopy </strong></p> <div> </div> <p class="chalmersElement-P">We have developed the next generation of nanotechnology to study and analyse individual biomolecules and at the same time generate important information about them. We do this with an optical instrument combined with nanofluidic chips and software with machine learning/AI. By offering researchers this new tool, they can answer their questions in a completely new way, thereby accelerating their research in order to make ground-breaking discoveries.<br /></p> <div> </div> <p class="chalmersElement-P"><span style="background-color:initial">Researcher: </span><a href="/en/staff/Pages/Christoph-Langhammer.aspx">Christoph Langhammer </a><br /></p> <div> </div> <p class="chalmersElement-P"><br /></p> <div> </div> <p class="chalmersElement-P"><span style="background-color:initial">P</span><span style="background-color:initial">roject:</span><strong style="background-color:initial">2D semiconductor with perfect edges </strong><br /></p> <div> </div> <p class="chalmersElement-P"><span style="background-color:initial">We at Smena have developed a new game-changing material, which is useful for numerous applications. The starting point of our material is an abundant mineral called molybdenite, whose price is only 5 dollar per kilogram. Using a scalable, patented, and environmentally friendly process, we managed to produce a large number of edges in flakes of natural molybdenite. <br /></span></p> <div> </div> <p class="chalmersElement-P"><span style="background-color:initial">Researcher: </span><span style="background-color:initial"><span></span><a href="/en/Staff/Pages/Timur-Shegai.aspx">Timur Shegai ​</a><br /></span></p> <div> </div> <p class="chalmersElement-P"><a href="/en/departments/physics/news/Pages/Two-research-projects-from-Physics-on-IVA-100-List.aspx">Two research projects from Physics on IVA 100 List 2022</a></p> <div> </div> <p class="chalmersElement-P"><br /></p> <div> </div> <p class="chalmersElement-P"></p> <div> </div> <div><a href="/en/departments/physics/news/Pages/Two-research-projects-from-Physics-on-IVA-100-List.aspx">​</a><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:20px;background-color:initial">Mathematical Sciences </span></div> <div> </div> <p class="chalmersElement-P">​Project: <strong>PressCise</strong></p> <div> </div> <p class="chalmersElement-P"><strong></strong>​We work with clinical partners to identify problems with today's products, and to test and verify our own inventions. We use mathematical theories to solve real problems and we realize our solutions in genuine smart textile products. </p> <p class="chalmersElement-P">Researchers: <a href="/en/Staff/Pages/torbjorn-lundh.aspx">Torbjörn Lundh</a><span style="background-color:initial">, in collaboration with Josefin Damm and Andreas Nilsson. </span></p> <div> </div> <p class="chalmersElement-P"><a href="https://www.presscise.com/" target="_blank"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />PressCise AB</a></p> <div> </div> <p></p> <div> </div> <p class="chalmersElement-P"><br /></p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"><br /></p> <p class="chalmersElement-P"><span style="background-color:initial"><em>I</em></span><span style="background-color:initial"><em>VA's 100 List presents selected research projects believde to have </em></span><span style="background-color:initial"><em>the potientalto be developed into ninnovations, to promote buisness  </em></span><span style="background-color:initial"><em>development or to provide other benefits. The list reflects a diverse range of research </em></span><span style="background-color:initial"><em>projects and researcher experise from Sweden's universities in a given field. </em></span><span style="background-color:initial"><em>​</em></span><br /></p> <em> </em><p class="chalmersElement-P"><span style="background-color:initial"><font color="#1166aa"><em> </em></font></span><span style="background-color:initial;color:rgb(0, 0, 0)"><em>The complete list can be found on </em><a href="https://www.iva.se/en/"><em>www.iva.se</em></a></span></p> <p class="chalmersElement-P" style="display:inline !important"><span style="background-color:initial;color:rgb(0, 0, 0)"></span> </p> <div><p class="chalmersElement-P" style="display:inline !important"><span style="background-color:initial;color:rgb(0, 0, 0)"><br /></span></p></div> <div><p class="chalmersElement-P" style="display:inline !important"><span style="background-color:initial;color:rgb(0, 0, 0)"><br /></span></p></div> <a href="/en/news/presidents-perspective/Pages/IVAs-100-list-Chalmers-technology-in-the-service-of-humanity.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />The Presidents perspective on Chalmers' contribution to technology in the service of humanity</a><p></p></div> <div><br /></div> <p class="chalmersElement-P"><a href="/en/departments/chem/news/Pages/Chemistry-research-on-IVA-100-list-.aspx"></a></p> <p class="chalmersElement-P"><a href="/en/departments/bio/news/Pages/Projects-on-sustainable-food-on-IVA’s-100-list.aspx"></a></p> <p class="chalmersElement-P"><a href="/en/Staff/Pages/eric-oste.aspx"></a></p></div></div> ​</div>Tue, 10 May 2022 16:00:00 +0200https://www.chalmers.se/en/departments/math/news/Pages/mathematical-research-on-IVA-100-list.aspxhttps://www.chalmers.se/en/departments/math/news/Pages/mathematical-research-on-IVA-100-list.aspxResearch from Mathematical Sciences on IVA's 100-list <p><b>IVA has published this year' list of 100 &quot;current research projects with the potential to create benefits, through commercialization, business and method development or societal impact&quot;. A spinoff company from the Department of Mathematical Sciences is on the list.​​​​​</b></p><h2 class="chalmersElement-H2">​PressCise <img src="/SiteCollectionImages/Institutioner/MV/Nyheter/TorbjornLundh_210830.gif" class="chalmersPosition-FloatRight" alt="Torbjörn Lundh" style="margin:5px" /></h2> Lundatex® medical (and the company <a href="https://www.presscise.com/">PressCise</a>) is the result of collaboration between a mathematician, a surgeon and a textile developer. The surgeon, Dr. Erney Mattsson, saw an unsolved problem with the bandage he used in his practice; the mathematician, professor Torbjörn Lundh, together with PhD student Jonatan Vasilis, solved the problem with a mathematical formula. The mathematical formula was handed over to Josefin Damm, the textile developer, who interpreted it into a textile. <div><br /></div> <div> The knitted textile construction that makes Lundatex® medical bandage has very specific properties. Further, visual guides on the bandage control the overlap and the force used during application. This results in a bandage with a mathematical formula built into a textile material. With this, we can guarantee that a precise pressure is given to the leg, independent of applier, size and shape of the leg, and if the leg is in resting position or active. It is truly a smart bandage!</div> <div><br /></div> <div><a href="https://www.iva.se/projekt/research2business/ivas-100-lista-2022/">See the complete list from IVA here</a>. (In Swedish) </div> <div><br /></div> <div>Photo: Setta Aspström</div> ​​Tue, 10 May 2022 12:00:00 +0200https://www.chalmers.se/en/departments/math/news/Pages/Mathematics-to-understand-cell-ageing.aspxhttps://www.chalmers.se/en/departments/math/news/Pages/Mathematics-to-understand-cell-ageing.aspxMathematics to understand cell ageing<p><b>​Mathematics has been applied to biological problems of cellular ageing in Barbara Schnitzer’s PhD thesis. In this way, a more comprehensive view of how cells accumulate damages and age has emerged</b></p><p>​As the world population gets increasingly older, we need to understand how to avoid age-related diseases. One important part of this is to understand ageing on a cellular level. Research on cells is usually done through experiments in a laboratory, and in that way a lot of isolated processes in the cells have been analysed. But the cell ageing is also characterised by the interactions of these processes, and the interactive and multi-scale dimensions are not always possible to study in a laboratory environment. To get a broader insight on how cells age, this project has been using mathematics in the form of different models for different cellular processes closely connected to ageing.</p> <h2>Mathematical models to describe cellular processes</h2> <p>The three chosen processes are the signalling system, which is able to sense changes in the cellular environment; the metabolism, which converts food into energy; and damage accumulation, which defines ageing in Barbara’s project. Depending on the available details of the biology, these networks have been translated into Boolean models, optimisation models (so-called flux balance analysis), and ordinary differential equations.</p> <p><img class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/MV/Nyheter/BarbaraSchnitzer250x300.jpg" alt="" style="margin:5px" />– All models have been combined to get an understanding of how the processes interact, since this interaction is important when the cell loses its function. The results are different predictions and suggestions on how these interactions work. The next step would be for the biologists to take, through verification experiments in the laboratory. The results can also be further built upon through adding more cellular processes and defining the connections between them.</p> <h2>Erasmus exchange led to Gothenburg</h2> <p>Barbara’s Bachelor degree, which she took in Germany, was neither in mathematics nor biology but in physics. She went to the University of Gothenburg in a six-month Erasmus exchange and there found the Master programme Complex Adaptive Systems which appealed to her. The programme included courses in computational biology, and when doing her Master’s thesis the PhD position that Barbara has had turned up. For the last two years she has worked closely to PhD Linnea Österberg, an experimentalist and biologist working in the same project group who defended her thesis on April 29. From the beginning they had separate projects, but the cooperation evolved naturally and they have had the benefit of going through the PhD work together.</p> <p>– A highlight during these years was when we gave a popular science talk called “A mathematician and a biologist walk into a bar” (<a href="https://urplay.se/program/225281-ur-samtiden-vetenskapsfestivalen-2021-en-matematiker-och-en-biolog-gar-in-i-en-bar">En matematiker och en biolog går in i en bar</a>, on UR Play) during the International Science Festival Gothenburg. Since it was in the year of 2021 it was digital, sent live from a studio, which was an interesting experience even if I was nervous. I think it is important for scientists to be able to explain what we do.</p> <p>Barbara has liked living in Gothenburg and finds the PhD conditions in Sweden good, since it is like a normal job with a secure employment and fixed salary. In the beginning she lived with a Swedish girl and chose to speak Swedish all the time, which together with some courses gave her a good knowledge of the language. The research language is however always English, so it is easier to talk about work in English. Barbara has also taught courses, mostly basic mathematics courses but also a master’s course. She found it hard in the beginning but kind of grew into it, and now sees it as a nice experience. Now, she will start looking for a job in industry.</p> <p><em>Barbara Schnitzer will defend her PhD thesis “</em><a href="https://gupea.ub.gu.se/handle/2077/70867?locale-attribute=en"><em>Mathematical Modelling of Cellular Ageing: A Multi-Scale Perspective</em></a><em>” on May 13 at 10.15 in lecture hall Pascal, Hörsalsvägen 1, and via Zoom. Supervisor is Marija Cvijovic, assistant supervisor Niek Welkenhuysen</em><br /><br /><strong>Text</strong>: Setta Aspström<br /><strong>Photo</strong>: Linnea Österberg</p> <p> </p>Tue, 03 May 2022 08:55:00 +0200https://www.chalmers.se/en/centres/chair/news/Pages/Access-the-Data-Factory-and-the-Edge-Learning-Lab.aspxhttps://www.chalmers.se/en/centres/chair/news/Pages/Access-the-Data-Factory-and-the-Edge-Learning-Lab.aspxAccess the Data Factory and the Edge Learning Lab<p><b>​Chalmers researchers can get free access to AI Sweden’s platforms Data Factory and Edge Learning Lab. Researchers can learn more about this opportunity in a workshop arranged by Chalmers and AI Sweden.</b></p>​The <a href="https://www.ai.se/en/data-factory">Data Factory</a> is a collaboration platform where partners can bring their own challenges as well as participating in others’ projects and experiments in a testbed environment. The <a href="https://www.ai.se/en/data-factory/edge-lab">Edge Learning Lab</a> is a testbed closely connected to the Data Factory where researchers, developers, students, data scientists, and other users can collaborate and explore edge learning. <br />Chalmers and AI Sweden host a workshop April 21st to give Chalmers researchers insight into the possibilities that exists. The workshop is held at AI Sweden at Lindholmen. Assistant professor <a href="/en/Staff/Pages/ahmh.aspx">Ahmed Ali-Eldin Hassan</a>, Computer and Network Systems division, Department of Computer Science and Engineering, will share his experience from the platforms.<br />Read more about the workshop and register <a href="https://en-gb.invajo.com/events/welcome/id/3c878710-9ac5-11ec-abdd-9f413ae42d74">here</a>.<br />Mon, 04 Apr 2022 00:00:00 +0200https://www.chalmers.se/en/areas-of-advance/ict/news/Pages/Call-for-ICT-seed-projects-2022.aspxhttps://www.chalmers.se/en/areas-of-advance/ict/news/Pages/Call-for-ICT-seed-projects-2022.aspxCall for ICT seed projects 2023<p><b> Call for proposals within ICT strategic areas and involving interdisciplinary approaches.​</b></p><h3 class="chalmersElement-H3" style="color:rgb(153, 51, 0)"><br /></h3> <h3 class="chalmersElement-H3">Important dates:</h3> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div><ul><li><b>NEW! Submission date: </b><span>9 May, at 09.00</span>, 2022</li> <li><b>Notification:</b> mid-June, 2022</li> <li><b>Expected start of the project:</b> January 2023</li></ul></div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <h3 class="chalmersElement-H3">Background</h3> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div><b>The Information and Communication Technology (ICT) Area of Advance</b> (AoA) provides financial support for SEED projects, i.e., projects involving innovative ideas that can be a starting point for further collaborative research and joint funding applications. </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div>We will prioritize research projects that <strong>involve researchers from different research communities</strong> (for example across ICT departments or between ICT and other Areas of Advances) and who have not worked together before (i.e., have no joint projects/publications). </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div>Research projects involving a <strong>gender-balanced team and younger researchers</strong>, e.g., assistant professors, will be prioritized. Additionally, proposals related to <strong>sustainability</strong> and the UN Sustainable Development Goals are encouraged.</div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div><b><em>Note: </em></b><em>Only researchers employed at Chalmers can apply and can be funded. PhD students cannot be supported by this call.  Applicants and co-applicants of research proposals funded in the 2021 and 2022 ICT SEED calls cannot apply. </em></div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div><em><br /></em></div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div><b>The total budget of the call is 1 MSEK.</b> We expect to fund 3-5 projects</div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <h3 class="chalmersElement-H3">Details of the call</h3> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div><ul><li>The project should include at least two researchers from different divisions at Chalmers (preferably two different departments) who should have complementary expertise, and no joint projects/publications.</li> <li>Proposals involving teams with good gender balance and involving assistant professors will be prioritized.</li> <li>The project should contribute to sustainable development. </li> <li>The budget must be between 100 kSEK and 300 kSEK, including indirect costs (OH). The budget is mainly to cover personnel costs for Chalmers employees (but not PhD students). The budget cannot cover costs for equipment or travel costs to conferences/research visits. </li> <li>The project must start in early 2023 and should last 3-6 months. </li></ul></div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <h3 class="chalmersElement-H3">What must the application contain?</h3> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div>The application should be at most 3 pages long, font Times–Roman, size 11. In addition, max 1 page can be used for references. Finally, an additional one-page CV of each one of the applicants must be included (max 4 CVs). Proposals that do not comply with this format will be desk rejected (no review process).</div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div>The proposal should include:</div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div>a)<span style="white-space:pre"> </span>project title </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div>b)<span style="white-space:pre"> </span>name, e-mail, and affiliation (department, division) of the applicants</div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div>c)<span style="white-space:pre"> </span>the research challenges addressed and the objective of the project; interdisciplinary aspects should be highlighted; also the applicant should discuss how the project contributes to sustainable development, preferably in relation to the <a href="https://www.un.org/sustainabledevelopment/sustainable-development-goals/" title="link to UN webpage">UN Sustainable Development Goals (SDG)</a>. Try to be specific and list the targets within each Goal that are addressed by your project.</div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div>d)<span style="white-space:pre"> </span>the project description </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div>e)<span style="white-space:pre"> </span>the expected outcome (including dissemination plan) and the plan for further research and funding acquisition</div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div>f)<span style="white-space:pre"> </span>the project participants and the planned efforts</div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div>g)<span style="white-space:pre"> </span>the project budget and activity timeline
</div> <div><div><br /></div> <h3 class="chalmersElement-H3">Evaluation criteria</h3> <div><ul><li>Team composition</li> <li>Interdisciplinarity</li> <li>Novelty</li> <li>Relevance to AoA ICT and Chalmers research strategy as well as to SDG</li> <li>Dissemination plan</li> <li>Potential for further research and joint funding applications</li> <li>Budget and project feasibility​</li></ul></div></div> <div><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:16px;font-weight:600;background-color:initial"><br /></span></div> <div><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:16px;font-weight:600;background-color:initial">Submission</span></div> <div> </div> <div> </div> <div> </div> <div>The application should be submitted as <b>one PDF document</b>.<span style="background-color:initial"></span></div> <div><br /></div> <div><a href="https://easychair.org/conferences/?conf=aoaictseed2023" target="_blank" title="link to submission"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Submit​</a></div> <div><br /></div> <div> </div> <div> </div> <div> </div> <p class="chalmersElement-P"><span><br /></span></p> <div> </div> <p class="chalmersElement-P"> </p> <div> </div> <div> </div> <div> </div> <div> </div> <div> </div> <div><span style="background-color:initial">The proposals will be evaluated by the AoA ICT management group and selected Chalmers researchers.

</span></div> <div><span style="background-color:initial"><b><br /></b></span></div> <div><span style="background-color:initial"><b>Questions</b> can be addressed to <a href="mailto:erik.strom@chalmers.se">Erik Ström</a></span></div> <div> </div> <div><span style="background-color:initial"><br /></span></div> <div><span style="background-color:initial">General information about the ICT Area of Advance can be found at <a href="/en/areas-of-advance/ict/Pages/default.aspx">www.chalmers.se/ict ​</a></span><br /></div> <div> </div> <div><span style="background-color:initial"><br /></span></div> <div> </div> <div><img src="/SiteCollectionImages/Areas%20of%20Advance/Information%20and%20Communication%20Technology/About%20us/IKT_logo_600px.jpg" alt="" /><span style="background-color:initial">​​<br /></span></div>Wed, 30 Mar 2022 00:00:00 +0200https://www.chalmers.se/en/departments/math/news/Pages/KAW-mathematics-program-2022.aspxhttps://www.chalmers.se/en/departments/math/news/Pages/KAW-mathematics-program-2022.aspxRandom numbers and the shape of the universe in new mathematical projects<p><b>​​​Michael Björklund, professor, and Mingchen Xia, doctoral student, at the Department of Mathematical Sciences, receive grants from the Knut and Alice Wallenberg Foundation program for mathematics. Michael Björklund receives funding to hire a postdoctoral fellow from abroad, and Mingchen Xia receives funding for a postdoctoral position in France.</b></p>​​The program for mathematics started in 2014 and is of great significance for mathematics in Sweden. It has given the best young Swedish mathematicians international experience by providing them with opportunities to take up postdoctoral positions abroad, while both young and more experienced mathematicians are recruited to Sweden from abroad, which contributes to creating strong research environments at Swedish universities. <div><span style="background-color:initial">“When we started, the aim of the program for mathematics was that Sweden would regain an internationally leading position in the field. I think we have progressed well. Swedish mathematics has had a very positive development, with several world-leading research environments, and it has become attractive for leading international researchers to come here,” says Peter Wallenberg Jr, chair of Knut and Alice Wallenberg Foundation.</span></div> <h2 class="chalmersElement-H2">The randomness of fractions</h2> <img src="/SiteCollectionImages/Institutioner/MV/Nyheter/KAW%202021/Michael-Bjorklund-KAW.gif" class="chalmersPosition-FloatRight" alt="Michael Björklund" style="margin:5px;width:230px;height:207px" /><a href="/en/staff/Pages/micbjo.aspx">Michael Björklund, professor</a> in the Division for Analysis and Probability Theory, Department of Mathematical Sciences, receives funding to hire a postdoctoral fellow from abroad.<div><br /></div> <div>The entire numerical line consists of real numbers, of which some comprise rational numbers, ones which can be written as a fraction of two integers. However, most real numbers cannot be expressed in this manner – they are irrational. The best-known irrational numbers include π and the square root of two, √2. How these irrational numbers should be best approximated using rational numbers has, in its simplest form, been well understood for more than a century. The field of diophantine approximation, which this project is about, examines how well an approximation can be performed using rational numbers for a given real number.<br /><br /> One way of approaching the question is to calculate the number of rational numbers that provide good approximations to a given real number and which have denominators below a specified high limit. It has been known since the 1960s that, for almost all real numbers, their quantity grows towards infinity at an almost exactly logarithmic rate with the given limit for the denominator. Deviations from this rate fulfil a specific form of the central limit theorem, i.e. a normal distribution, as recently proven by Michael Björklund and Alexander Gorodnik. <br /><br /> The purpose of the project is, in the next step, to move beyond the normal distribution. The basis for understanding deviations from the normal distribution is the already well-known analysis of the sums of independent random variables and the central limit theorem. In the case being studied, the random variables are only partially independent, but the analogy may bear fruit and lead to better estimations that those now known. <br /></div> <h2 class="chalmersElement-H2">The shape of the universe</h2> <img src="/SiteCollectionImages/Institutioner/MV/Nyheter/KAW%202021/Mingchen-Xia-Chalmers.gif" class="chalmersPosition-FloatRight" alt="Mingchen Xiao" style="margin:5px;width:225px;height:192px" /> <div><a href="/en/staff/Pages/xiam.aspx">Mingchen Xia, PhD student</a> in the Division for Algebra and Geometry, Department of Mathematical Sciences, receives funding for a postdoctoral position with Professor Sébastien Boucksom at the École Polytechnique, Palaiseau, France. </div> <div><br /></div> <div>Time and space shape our universe. The theory of how they are connected was developed in the eighteenth century by Isaac Newton. However, in his Principia Matematica, time and three-dimensional space are independent. They were first linked in a shared spacetime almost 200 years later, when James Clerk Maxwell realised that the speed of light in a vacuum was constant, regardless of who measured it. This was only possible if space and time were regarded as a unity – a spacetime. </div> <div><br /></div> <div> Spacetime received its precise mathematical description in Albert Einstein’s masterpiece – the general theory of relativity, which was published just over a century ago. The theory describes the shape of the universe as a four-dimensional surface. Its shape is determined by the matter content of space – the more matter, the more curved the surface. But what is the shape of the universe if all matter is removed, how can a vacuum be described? If there is nothing at all, is the universe then entirely flat? The answer was astounding – it turns out that the theory of relativity actually permits many non-flat vacua. </div> <div><br /></div> <div> In the theory of relativity, the exact relationship between matter and the shape of the cosmos is given a set of differential equations, Einstein’s field equations. These are notoriously difficult to solve and several different approaches have been developed over the past century to obtain direct solutions for spacetime. One of the most recent is pluripotential theory, an area within complex mathematical analysis. The plan is to use these methods to help explore the intricate geometry of the vacuum. </div> <h2 class="chalmersElement-H2">About the Knut and Alice Wallenberg Foundation program for mathematics</h2> <div><span style="background-color:initial">Over the years 2014–2029, the program will provide SEK 650 million to allow Swedish researchers to receive international postdoctoral positions, as well as the international recruitment of visiting professors and of foreign researchers to postdoctoral positions at Swedish universities. The program also includes funding worth SEK 73 million for the Academy of Sciences’ Institut Mittag-Leffler, one of the world’s ten leading mathematics institutions.</span><br /></div> ​​​Wed, 23 Mar 2022 12:00:00 +0100