2,644 search results for “dynamical systems” in the Public website
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Poetry, rhythm, and meter
Knowledge and culture subproject 4:
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Untangling the Evolution of a Balanced Lethal System
Ben Wielstra strives to unravel the evolution of balanced lethal systems. On 1 February he started his own lab at the Institute of Biology Leiden. Wielstra is one of five researchers at Leiden University who has been awarded an ERC Starting Grant in 2018 by the European Research Council. ERC Starting…
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What tiny isotopes reveal about planets outside our solar system
Planets existing in other solar systems contain invaluable information about the origin of planets and life. PhD candidate Yapeng Zhang has studied their atmospheres by looking at their smallest parts: isotopes. With her research she hopes to discover what makes our own solar system unique.
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Data use, online consumer needs, business strategies and regulatory response
This project aims to explore and examine the factors that impact upon the efficacy of information disclosure duties pertaining to customer data use in online business.
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Balanced lethal systems: a quick guide by Ben Wielstra
Ben Wielstra studies balanced lethal systems, in which half of the offspring die before birth. In the journal Current Biology, he explains in an accessible way how such a disadvantage can originate in nature.
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Academic Council on the United Nations System (ACUNS)
On Thursday 24 of June, GTGC’s Assistant Professor Valentina Carraro, presented her work on regime complexity during the Conference of the Academic Council on the United Nations System (ACUNS).
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The future of the Dutch incapacity benefit system
Barend Barentsen, Professor of Labour Law, recently spoke at a meeting of experts in Amsterdam on the future of the Dutch incapacity benefit system.
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Spierenburg in NRC on the neoliberal system in South Africa
Anthropologist Marja Spierenburg talks in the Dutch newspaper NRC about the neoliberal system and how it has to change in order to solve the energy crisis in South-Africa.
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Overlapping Institutions in the United Nations human rights system
On 16-17 June 2022, Valentina Carraro presented a paper on ‘Overlapping Institutions in the United Nations human rights system’ at the Politicologenetmaal conference, Radboud University, Nijmegen.
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Complex Organic Molecules Discovered in Infant Star System
For the first time, astronomers have detected the presence of complex organic molecules, the building blocks of life, in a protoplanetary disc surrounding a young star. The discovery reaffirms that the conditions that spawned the Earth and Sun are not unique in the Universe. The results are published…
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Better treatment of systemic autoimmune diseases requires close collaboration
Exceptional collaboration between physicians is needed to better understand and treat autoimmune diseases that cause inflammation in various organ systems.
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Ancient water management and field systems in southern Jordan
About 15 km to the south of the ancient city of Petra, archaeologists from the University of Leiden have discovered an impressive network of ancient water conservation measures and irrigated field systems.
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Valentina Carraro offers recommendations on strengthening the UN system
At an international high-level conference, Valentina Carraro, Deputy Coordinator of the interdisciplinary programme Global Transformations and Governance Challenges (GTGC) presented her research on human rights in the UN Human Rights Council and Treaty body systems. One of the most practical recommendations…
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Language and number
Knowledge and culture subproject 2:
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Joost Grootens contributes essay to the book ‘Le Système Minard’
Joost Grootens contributes the introductory essay ‘Charles Joseph Minard: Critical Practice’ to the book ‘Le Système Minard’ on the French pioneer in the representation of statistical data in the 19th century.
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Simona Demkova on Enforcement Challenges in Multilevel Regulatory Systems
On 15-16 December, Simona Demková participated in a Closing conference and a Book launch event of the University of Luxembourg doctoral training programme on the Enforcement Challenges in Multilevel Regulatory Systems – DTU REMS.
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Pre-Trial Detention in the Dutch Juvenile Justice System
On 25 January 2018, at 16:15 hrs, Yannick van den Brink will defend his doctoral thesis titled ‘Voorlopige hechtenis in het Nederlands jeugdstrafrecht’ (‘Pre-trial detention in the Dutch juvenile justice system’) at the Academy Building of Leiden University. The doctoral research is supervised by Professor…
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WARN-D: Your personal code yellow - orange - red
Imagine getting a notification on your mobile phone with your personal code for impending mental health problems or even depression: yellow, orange, or red. Science fiction? Not for scientist Eiko Fried. 'There is a real chance we can prevent some mental health problems before they occur.' Want to participate…
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Mariëlle Bruning at roundtable discussion on child protection system
On 3 November 2022, Mariëlle Bruning, Professor of Children and the Law, spoke as an expert on child protection at a roundtable discussion with Dutch Lower House members of the Standing Committee on Justice and Security.
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Mariëlle Bruning: Swift action needed for failing youth services system
On 1 January 2021, a major youth care centre in the Dutch province Zeeland will close its doors. It is responsible for implementing child protection measures. As a result, it is likely that the care for around 1100 children will come under threat. Vulnerable children will face changes to the authorities…
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Marike Knoef: The Netherlands still has a good pension system
International research agency Mercer has once again named the Dutch pension system the best in the world. Denmark comes second, and third place is for Australia.
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Global fitness maximising approaches to evaluate the trade-offs involved in the evergreen and deciduous conundrum
Which traits and/or trade-offs determine benefits of being deciduous or evergreen?
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All comets in our solar system might come from the same place
All comets might share their place of birth, new research says. For the first time ever, astronomer Christian Eistrup applied chemical models to fourteen well-known comets, surprisingly finding a clear pattern. His publication has been accepted in the journal Astronomy & Astrophysics.
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‘Using real-world data to enhance our healthcare system’
On 16 May 2022, Professor Michel Wouters from the Department of Biomedical Data Sciences at the Leiden University Medical Centre (LUMC), will deliver his inaugural lecture titled ‘Quality of Cancer Care: why the real world matters’. Wouters will use the opportunity to describe how quality registries…
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Immune system plays dual role in breast cancer
The immune system plays a paradoxical role in the spread of breast cancer. Some immune cells contribute to metastasis, while other cells can be activated to strengthen the effect of chemotherapy. Kelly Kersten made this discovery in her PhD research. PhD defence 7 February.
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Public Lecture and Workshop on Algorithmic Systems: intersectionality, fairness, accountability
On Tuesday December 19, Museum Boerhaave, the Lorentz Center and eLaw organize a public lecture on ‘Fairness and Accountability of Sociotechnical Algorithmic Systems’.
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Dissociative chemisorption on transition metal surfaces
The dissociative chemisorption of a molecule on a transition metal surface represents a rate-limiting step in many heterogeneously catalyzed processes, whereby most chemicals are made. In spite of the importance of this reaction, an accurate first principles approach to modeling it does not yet exist.…
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Lexical Tone in Word Activation
On the 16th of May, Qing Yang successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Qing on this achievement!
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Dutch East Indies tax system was supposed to elevate the colony, but turned out to be token politics
In the late 19th century, the Dutch government introduced a tax system in the Dutch East Indies, with the intention of transforming the colony into a modern state. PhD student Maarten Manse wrote his thesis on this development and discovered how grandiloquent colonial ideals became bogged down in daily…
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On metrics and models for multiplex networks
In this thesis, we extend the concept of null models as canonical ensembles of multi-graphs with given constraints and present new metrics able to characterize real-world layered systems based on their correlation patterns.
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Many planetary systems prematurely evaporate into thin air
When stars are born, large clouds of gas and dust form that are known as circumstellar discs. Research by PhD candidate Francisca Concha-Ramírez shows that strong radiation from neighbouring stars soon evaporates the dust in these discs, which can prevent planet formation at an early stage. PhD defence…
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Uniform infinite and Gibbs causal triangulations
Promotor: Richard D. Gill
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First grammar of Hamar reveals unique language system
Linguist Sara Petrollino has written the first detailed grammar of Hamar, a language spoken in south-west Ethiopia that has some unique characteristics. PhD defence 10 November.
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The Nature of the Workmen's Marks and Their Interaction with Writing
The project concerns the nature, the usages and functions of pictographic systems in relation to writing in societies with (restricted) literacy.
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Improving juvenile justice systems in Europe: Training for professionals
Prof. Ton Liefaard and dr. Stephanie Rap (together with Apollonia Bolscher LL.M.) are involved in developing a training Toolkit and Manual for the project Improving Juvenile Justice Systems in Europe: Training for Professionals (JUST/2013/FRC/AG).
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Bibi van den Berg about malfunctions in IT systems
Due to a major telephone disruption, 112 was unavailable for hours on Monday 24 June. At Albert Heijn, Tuesday 25 June, cash registers refused service. Bibi van den Berg, professor in Cyber Security Governance at the Institute of Security and Global Affairs, looks back on aspects of the disasters of…
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On the Power Efficiency, Low latency, and Quality of Service in Network-on-Chip
In multi/many-core System-on-Chips (SoCs), the performance is almost linearly scaling with the number of processing elements.
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Conventions: the oil in the engine of the state system
The rise of populist parties, the expansion of the role of the state and now the fragmentation of the Senate and the House of Representatives: Dutch political reality has changed rapidly over recent decades. These developments are in stark contrast to Dutch constitutional law that has remained almost…
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Evolutionary Molecular Dynamics
PhD defence
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Ruud Koole appointed to state commission parliamentary system
Political scientist Ruud Koole (Institute Political Science, Leiden University) has been appointed to a state commission that will investigate whether the Dutch parliamentary system and the parliamentary democracy need to be reformed.
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Research
Research at the THEOR group is comprised of the following research themes:
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Structure and regulation in photosynthesis
Plants, algae and cyanobacteria have the amazing capacity to perform delicate photophysical and photochemical processes of light capture, excitation transfer, charge separation and catalysis in fluctuating living environments. As a consequence, photosynthetic proteins and membranes form dynamic architectures.…
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Björn de Rijk wins SIAM Posterprize
During the last SIAM / Nonlinear Waves and Coherent Structures / conference, PhD student Björn de Rijk, supervised by Prof.Dr. Arjen Doelman and Prof. Dr. Jens Rademacher, received the ‘Posterprijs’. This award is given to the student with the best Poster Presentation..
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How colour-blind is the criminal justice system?
Should the media refer to a criminal’s ethnicity? Law students held an online afternoon symposium on discrimination in the criminal justice system – and, while they were at it, society at large.
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A chemical connection that affects your immune system
A group of chemists, that includes Sander van Kasteren and Hermen Overkleeft, has discovered that azides, a certain type of chemical compound, can determine whether or not T cells respond to or ignore a vaccine. Their discovery is set to be published in Angewandte Chemie.
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Steffen BrünleScience
s.bruenle@lic.leidenuniv.nl | +31 71 527 4544
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Scanning mutagenesis in a yeast system delineates the role of the NPxxY(x)(5,6)F motif and helix 8 of the adenosine A(2B) receptor in G protein
Source: Biochem Pharmacol, Volume 95, Issue 4, pp. 290-300 (2015)
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Archeologists involved in drilling the East African Rift System
NWO-ALW has funded the project Climate impact on human evolution: age calibration of the ICDP Hominin Sites and Paleolakes Drilling Project (HSPDP), led by PIs Cor Langereis and Guillaume Dupont-Nivet (Utrecht University).
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Video: Is the hypersonic rocket system the new super weapon?
Missiles that travel at approximately six thousand kilometres per hour, up to 5 or 6 times the speed of sound. Has Russia used those against Ukraine and how is that possible? In Leiden University’s Dutch video series ‘De Werkplaats’, Danny Pronk, political scientist, security expert, and researcher…
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Image-based Computational Biology
In this research group, led by Dr. Joost Beltman, the aim is to employ mathematical and computational dynamical modelling approaches in order to quantitatively and mechanistically understand the dynamical behaviour and regulation of intracellular networks of genes, proteins and metabolites as well as…