432 search results for “step problems” in the Public website
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Chemists solve persistent problem after four decades
After almost four decades, Leiden and Eindhoven chemists have resolved the discussion about the correct model for the simplest chemical reaction in heterogeneous catalysis, which is essential for fuel cells. Using a unique curved platinum surface, Ludo Juurlink and PhD candidate Richard van Lent from…
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Wearing clogs may have caused foot problems
Research by bioarchaeologists from Leiden and Canada has shown that 19th-century Dutch farmers regularly had bone defects. These may have been caused by wearing clogs. Publication in the International Journal of Paleopathology.
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Will soap and sunlight solve the energy problem?
A consortium of international researchers comes with a unique solution to the energy problem. By mimicking photosynthesis, they aim to produce sustainable fuels out of sunlight, water, and CO2. Their secret? ‘Soap bubbles’, says Leiden chemist Sylvestre Bonnet, who is part of the consortium.
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Important Step for Dark Matter Experiment CERN
Particle lab CERN gives the green light for the test phase of an experiment that aims to produce dark matter particles. Physicist Alexey Boyarsky is one of the initiators.
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Special education and autism
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Error bounds for discrete tomography
Promotores: K.J. Batenburg, B. Koren
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Working together on the plastic problem: how to keep citizens engaged?
What motivates citizens to participate in a citizen science project on plastic pollution? And does that motivation change over time? Liselotte Rambonnet tried to answer these and other questions with her research on the Clean Rivers (‘Schone Rivieren’) project. Rambonnet is a PhD student at the Institute…
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Find out more about effective governance for global problems at this conference
The annual conference of the Global Transformations and Governance Challenges (GTGC) interdisciplinary research programme will take place in The Hague on 7-9 June. Why should you be there? ‘The problems in the world affect us all. This conference will be looking at planetary governance’, says programme…
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'An impressive step between professional practice and the academic world'
On 29 June 2017, Doris Dull-Zessner defended her PhD dissertation “Value Congruence in a Multinational Corporation”. The defence was at 12.30 hrs, in the Academy Building of Leiden University, Rapenburg 73. The supervisors are Professor J.A.A. Adriaanse and Professor J.I. van der Rest.
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A step closer to sustainable energy from seawater
The research group headed by Leiden chemist Marc Koper has discovered a catalyst that minimizes the production of chlorine gas during salt water electrolysis. The invention can enable the direct production of hydrogen from seawater. The article has been published in the Journal of the American Chemical…
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One step closer to pain-free vaccinations
Microneedles are a promising tool for the painless administration of vaccines through the skin. But, are these minuscule needles really effective? PhD student Pim Schipper of the Leiden Academic Centre for Drug Research investigated various factors of vaccination via the skin and discovered, among other…
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Structure dependence of molecular reactions on surfaces
The research presented in this thesis makes use of small molecules (as H2 , D2 and O2 ) on well-defined single crystal surfaces (flat Pt(111), flat Cu(211) and curved Pt(111)) to elucidate the role of surface structure and degrees of freedom in the reactant in specific surface reactions.
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Why is sexual violence still not a man’s problem? Comparing post #MeToo policy and awareness training in the Dutch and French cultural sectors
Why do sexual violence policies still fail to systematically address men and masculinities, when the need for cultural change among men has been central in public debates since #MeToo?
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Street children have rights too! Problems faced by street children globally and in the Philippines and why their rights need protection
To what extent are the rights to street children violated en how can their rights be protected?
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Surface-structure dependence of water-related adsorbates on platinum
Promotor: M.T.M. Koper, Co-promotor: J.B.F. Juurlink
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involves a broad selection of associates in solving cybersecurity problems
Cyber-attacks, privacy-related problems or failures in functioning: many technologies that are used every day have security issues that are solved when the software is already in use. A new interdisciplinary project, in which Olga Gadyatskaya, Harry Wijshoff, Alex Uta and Kristian Rietveld from the…
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Neurodevelopmental risks in young children with an extra X or Y chromosome
This longitudinal study is focused on neurodevelopmental problems in young children with XXY, XXX and XYY, aged 1 to 6 years.
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What do global problems have to do with the individual human rights holder?
On Human Rights Day 2024, the International Court of Justice is charged by the General Assembly with delivering an Advisory Opinion asking, in effect, what does the climate crisis imply for the rights of vulnerable states and people? Researcher Jens Iverson shares his thoughts on this event.
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Mental health problems during COVID highly variable by symptom cluster and population group
People already diagnosed with a mental disorder before the COVID-19 pandemic did not show a disproportionate increase in symptoms afterwards. This is one result from the first systematic review of longitudinal studies following their study population from before to during the first eighteen months of…
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First step in converting solar energy using ‘artificial leaf’
Two things are needed to produce fuel from sunlight: an antenna that harvests light, and a light-driven catalyst. The most efficient antennae contain bacteria. An international team headed by Huub de Groot imitated them and discovered how they function.
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‘A logical step from medieval literature to fact-checking’
Alumnus Peter Burger – along with his colleague Alexander Pleijter – is the face of fact-checking in the Netherlands. ‘My degree led straight to this.’
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‘Don’t assume that someone else will step in’
Her book ‘Veel valse hoop’ (Much False Hope) about the persecution of the Jews in the Netherlands was immediately hailed as a seminal work. German historian Katja Happe gave the Cleveringa Lecture on 26 November. She is fascinated by what makes people take a stand.
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COI stakeholder meeting 2023 on governmental problem-solving and implications for legitimacy
On November 30, 2023, the research group Institutions for Conflict Resolution (COI) organized a stakeholder meeting on governmental problem-solving and its implications for legitimacy. COI is a joint collaboration between the Universities of Leiden, Utrecht, and Nijmegen as part of the Dutch Sector…
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Kohei Suzuki on Infobae about the problem of loneliness in Japan
Kohei Suzuki, Assistant Professor at Institute of Public Administration, was interviewed by Infobae about loneliness in Japan and the role of government and society.
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Filter-based reconstruction methods for tomography
Promotor: K.J. Batenburg
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Major steps towards realising a bold vision for European Excellence in AI
The Confederation of Laboratories of Artificial Intelligence Research in Europe (CLAIRE), Europe’s grassroots organisation of scientists and experts in Artificial Intelligence, announces the opening of administrative offices across Europe.
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Han de Winde steps down as vice-dean of Faculty of Science
Han de Winde will step down as a member of the faculty board of the Faculty of Science from 1 September 2018. De Winde had been vice–dean at the faculty since 2013. As director of education he was responsible for the bachelor's and master's programmes at the faculty.
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New professor of Theoretical Physics: ‘The problems I study can come from anywhere in society’
The financial sector, supply chains and ecology. Not necessarily topics you might associate with physics, yet it’s exactly what new professor Diego Garlaschelli is dealing with. The common thread? Complex networks.
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Science, technology and innovation is not addressing world’s most urgent problems
Global science research serves the needs of the Global North, and is driven by the values and interests of a small number of companies, governments and funding bodies, finds a major new international study published today. As such, the authors find, science, technology and innovation research is not…
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New professor David Holmes engages with age-old counting problems
As of 1 October, David Holmes has been appointed full professor of Pure Mathematics at the Mathematical Institute (MI). His work lies at the intersection of algebra, geometry and number theory.
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anthropology students can contribute to solutions for current public problems
Wondering what anthropology students can contribute in daily practice? Both during their bachelor's and master's studies, anthropology students conduct research at the request of social organisations in Leiden via Leren met de Stad. Last week, they presented their experiences and results on the various…
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New professor Vedran Dunjko finds real-world problems that a quantum computer can solve
Vedran Dunjko appointed to full professor of quantum computing at Leiden University, the Netherlands.
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Self-regulation in boys with ODD/CD
Understanding individual differences in self-regulation in boys with ODD/CD on the level of brain, cognition and behavior
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Radio Palestine/Israel Challenging Preconceptions: ‘A courageous step in a polarised debate’
The Israel-Palestine conflict regularly sparked intense debates in university lecturer Noa Schonmann's classes. She decided to start a podcast with journalist Rajaa Natour to teach her students to have deep and difficult conversations in a nuanced way.
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in the evolutionary race between humans and resistant bacteria: two steps forward for us
A patent for what may be a potent, new antibiotic. And: a clear overview of promising approaches to overcome a crucial resistance tactic employed by bacteria. In the span of one week, two researchers from Leiden are receiving their PhDs, each of them on an important step in the battle against bacteria…
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Prize laureate Paul Krugman in Wijnhaven: 'American men have real problems'
In a packed lecture hall at Wijnhaven, Nobel Prize winner Paul Krugman succinctly summed up the essence of his argument on Wednesday 17 September: ‘Running a good society is hard’. His lecture held up a mirror to economists and policymakers.
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A small step on platinum, a giant leap for electrochemistry: A more realistic picture of platinum electrodes
Current electrochemical theory does not adequately describe realistic platinum electrodes. Scientists at Leiden University have now, for the first time, mapped the influence of imperfect platinum surfaces. This provides a more accurate picture of these electrodes, with applications in hydrogen production…
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Annetje Ottow to step down as President of Leiden University’s Executive Board from 1 September
After nearly five years as President of the Executive Board, Annetje Ottow will be stepping down from the role as of 1 September. During her time as President, she helped shape the university’s strategic direction, strengthening its regional, European and international profile. Sustainability, and dignity…
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Platinum surface instabilities and their impact in electrochemistry
Hydrogen fuel cells are expected to be pivotal in the energetic transition towards renewable energy sources such as solar and wind power. However, their industrial scalability is severely hindered by the high cost and degradation rate of platinum catalysts, one of their key components. Addressing this…
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Aggression in young children often caused by nervous system defects and problems experienced by the mother during pregnancy
Young children exhibit more aggressive behaviour if their nervous system fails to respond adequately to stress situations and if they are exposed to risk factors such as smoking or psychological problems experienced by the mother during the pregnancy. This is the conclusion of PhD candidate Jill Suurland.…
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Teachers' use of progress data in planning and evaluating instruction for students with learning disabilities
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ZonMw grant for Leonie Vreeke to develop a stepped-care treatment for very shy young children
Leonie Vreeke is ready to start a new 5-year project to develop a stepwise treatment specific to very shy young children. Her proposal was granted by ZonMw with nearly € 600.000,-. A PhD student and a research assistant will be appointed to execute this project, together with societal partners such…
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Blowup in the complex Ginzburg-Landau equation
Promotor: A. Doelman, Co-promotor: V. Rottschäfer
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Programming problem patched: Leiden PhD candidate discovers breakthrough in software security
By chance, computer scientist Hans-Dieter Hiep (Leiden Institute of Advanced Computer Science and Centrum Wiskunde & Informatica) discovered a ‘gaping hole’ in a widely used method for evaluating software security. Hiep patched the hole, causing quite a stir in his field. 'It’s not pleasant when a PhD…
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Young people’s experience of mental health problems help improve medical training and practice
LUMC Curium and the Dutch National Youth Council (NJR) have been working on integrating young people’s lived experiences of mental health problems in medical research and training. The aim is to broaden doctors' and researchers’ perspectives and improve the care offered.
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Radical steps needed to save Europe’s democratic rule of law from Big Tech
In an op-ed and an interview in Dutch newspaper ‘de Volkskrant’, Reijer Passchier, Assistant Professor in Constitutional Law at Leiden University and Professor of Digitalisation and the Democratic Constitutional State at the Open University, stresses that Europe needs to take radical steps to tackle…
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Being able to host international organisations by taking that extra step
The number of international organisations has increased over the last decades. As has the number of cities interested in housing these organisations. International organisations bring wealth to cities and help improve their reputation. They often act as a magnet for other international corporations.…
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Images of Galois representations
Promotores: S.J. Edixhoven, P.Parent
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Chaotic dynamics in N-body systems
Promotor: Prof.dr. S.F. Portegies Zwart, Co-promotor: D.C. Heggie
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Development of visual span in Hebrew and Dutch-speaking prereaders
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