https://uniba.sk/ Najnovšie novinky sk https://uniba.sk/fileadmin/tt_news_article.gif https://uniba.sk/ Najnovšie novinky TYPO3 - get.content.right http://blogs.law.harvard.edu/tech/rss Thu, 31 Dec 2026 00:00:00 +0100 https://uniba.sk/ Friday 29.10.2021 at 13:00, Lecture room M X or online Štefan Gyürki (Slovak University of Technology):
Working with graphs in GAP MS Teams (AGT in Bratislava team, scheduled meeting)
Abstract:
We show how to work with graphs under GAP using the package GRAPE, written by Leonard Soicher. First, we demonstrate how to create graphs, how to inspect them using the basic commands in GRAPE. Finally, we show how to efficiently create some of the famous graphs, for example the Petersen graph, Clebsch graph, Tutte-Coxeter graph, etc.

Thanks to (temporary?) loosening of restrictions regarding the COVID epidemy, we intend to conduct the seminar meetings this semester `in-person'. Hence, all of you who might choose to attend in person are welcome. Those of you who are not able to attend in person or who are still uncertain about the safety of attending in person are welcome to attend via MS Teams. In either case, we hope to see as many of you as possible (either in person or virtually) at our Friday gatherings.]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Martin.Macaj@fmph.uniba.sk Thu, 28 Oct 2021 12:30:00 +0200 https://uniba.sk/ The Dean of Comenius University, Faculty of Pharmacy, on the occasion of All Saints' Day, declares... [FaF] Titulka - široké novinky Tue, 26 Oct 2021 11:08:00 +0200 https://uniba.sk/ Deadlines for registrations: Registration possible until Friday, 29 October 2021 Registration... Online Seminar Food Supply Chain Management The seminar looks at topics in the field of digitalization and decision support in food supply chains using different simulation models. The aim is the independent, research-oriented and reflected scientific treatment of topics of simulation as decision support tool for logistics in the food sector. Registration possible until Nov 15^th Course dates: 15 Nov; 20 Dec 2021 6 ECTS (will be allocated as extra credits to the diploma transcript) More information on the seminar: https://enlight-eu.org/index.php/news-events/enlight-courses/item/35-food-supply Sustainable Development, Trade and Environmental Economics Global environmental problems such as global warming have received great publicity in recent times. Since most of them have a transboundary nature, they can only be addressed effectively through international cooperation. We will discuss the use of trade policy as an instrument for achieving significant reductions in carbon emissions and also whether trade policies can be effectively used as enforcement mechanisms to support environmental cooperation. In addition, we will discuss the ongoing negotiations on climate change and the environment that, similar to the trade case, will cover an increasing scope of environmental issues in future rounds of negotiation. Registration possible until Friday, 29 October 2021 Course dates: 4-5 February 2022 6 ECTS (will be allocated as extra credits to the diploma transcript) More information on the seminar: https://enlight-eu.org/index.php/news-events/enlight-courses/item/48-sustainable-development-trade-and-environmental-economics]]> [FM] Titulka - úzke novinky Fri, 22 Oct 2021 09:40:00 +0200 https://uniba.sk/ Wednesday 27.10.2021 at 14:00, Lecture rook F1/364 (online too) Mgr. Martin Venhart, PhD. (Institute of Physics, Slovak Academy of Sciences, Vice President of SAS) Názov: Nuclear Structure of Extremely Neutron-deficient Au Isotopes MS Teams Abstract:
The most neutron-deficient gold isotopes have been the subject of an extensive program of investigation using gamma-ray and conversion electron studies following beta decay, in-beam reaction gamma-ray spectroscopy, spectroscopy of directly produced isomeric states, laser-induced hyperfine spectroscopy and alpha-decay studies of thallium isotopes. Nevertheless, in comparison to the heavier thallium and gold isotopes, where multiple shape coexistence has been established, a rich variety of structures remains to be discovered. In the seminar, recent results on extremely neutron-deficient 177,179Au isotopes will be presented. Most notably, strong mixing of strongly and weakly deformed structures observed in 177Au, which does not have a precedence in heavier Au isotopes. Various nuclear isomers, very recently discovered in 179Au will be presented, together with their implications on multiple shape coexistence and triaxial deformation. The data, that will be presented, were acquired at the University of Jyvaskyla, Finland, within a scope of the S17 and JR115 experiments, led by the Institute of Physics, Slovak Academy of Sciences. ]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Jaroslav.Stanicek@fmph.uniba.sk Thu, 21 Oct 2021 16:29:00 +0200 http://fileadmin/jlf/PR/oznamy/2021/10/All_sains_public_hols.pdf Tuesday 2nd November 2021. [JLF] Titulka - široké novinky Wed, 20 Oct 2021 11:15:00 +0200 https://uniba.sk/ Bratislava, 21 October 2021: The oldest Slovak faculty in humanities and social sciences... “We want to make sure that our research has a real impact on the society, that it helps shape critical thinking and value attitudes, and that it is relevant to current societal challenges. We enjoy thinking and our goal is to make sure everyone does too,” says the Dean of the Faculty, Professor Marián Zouhar. The Faculty will celebrate its centenary during a ceremonial academic assembly in the Auditorium of Comenius University at Šafárik Square, and will hold various events during the academic year 2021/2022. The anniversary will be commemorated by a picture publication on the history of the faculty, a research paper by a group of authors, a work of graphic art, and a memorial medal.]]> [RUK] Titulka - úzke novinky [RUK] Tlačové správy [RUK] Tlačové správy EN pr@uniba.sk Tue, 26 Oct 2021 15:42:00 +0200 https://uniba.sk/ JoVe Core Organic Chemistry is an online videotexbook platform, available to access remotely or via... https://www.jove.com/account, please use your designated university uniba.sk email address so that the system recognises you as a JFMED student.  ]]> [JLF] Titulka - široké novinky janka.sykorova@uniba.sk Wed, 20 Oct 2021 14:10:00 +0200 https://uniba.sk/ Friday 22.10.2021 at 11:00, Lecture room M/213 Stefan Dobrev (Mathematical Institute Slovak Academy of Sciences):
Graph Exploration by Energy-Sharing Mobile Agents
Abstract:
We consider the problem of collective exploration of a known n-node edge-weighted graph by k mobile agents that have limited energy but are capable of energy transfers. The agents are initially placed at an arbitrary subset of nodes in the graph, and each agent has an initial, possibly different, amount of energy. The goal of the exploration problem is for every edge in the graph to be traversed by at least one agent. The amount of energy used by an agent to travel distance x is proportional to x. In our model, the agents can share energy when co-located: when two agents meet, one can transfer part of its energy to the other. For an n-node path, we give an O(n+k) time algorithm that either finds an exploration strategy, or reports that one does not exist. For an n-node tree with l leaves, we give an O(n+lk^2) algorithm that finds an exploration strategy if one exists. Finally, for the general graph case, we show that the problem of deciding if exploration is possible by energy-sharing agents is NP-hard, even for 3-regular graphs. In addition, we show that it is always possible to find an exploration strategy if the total energy of the agents is at least twice the total weight of the edges; moreover, this is asymptotically optimal.
web: https://beda.dcs.fmph.uniba.sk/seminar]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Rastislav.Kralovic@fmph.uniba.sk Mon, 18 Oct 2021 11:06:00 +0200 https://uniba.sk/ Bratislava, 18 October 2021: Three-time Pulitzer Prize winner, Matt Apuzzo, is visiting Comenius... The New York Times will focus on politically motivated attacks against journalists, and other dangers which threaten the free media. Matt Apuzzo has personally had his phone data seized by both the Obama and the Trump administrations. In his opinion, such intrusion into the work of journalists can threaten the freedom of the media and the very essence of democracy. Matt Apuzzo is an international correspondent of The New York Times and an investigative reporter stationed in Brussels. He focuses on issues related to law enforcement, national security and intelligence services. For several years, he worked for the Associated Press, he also taught journalism at Georgetown University, and together with Adam Goldman he co-authored the book Enemies Within which describes the secret spying units operating in Islamic terrorist networks. He received his first Pulitzer Prize in 2012 for his report on the spying tactics employed by the New York Police Department against the Muslim community. In 2018, he received the prize for his articles describing the Russian influence on Donald Trump's election campaign and finally, this year, he was on the team of authors who received the prize for their coverage of the development and consequences of the coronavirus pandemic. Admission to the lecture is free but registration is necessary at www.uniba.sk/apuzzo. Following the recommendation of the public health officers the event will be for “Completely Vaccinated Only”. Interpreting into Slovak will be provided and the lecture will be streamed live at www.nadaciatatrabanky.sk/apuzzo. The appearance of the American journalist is a part of the Pulitzer Prize Lecture Series supported by Tatra Banka Foundation in cooperation with the Petit Academy Foundation and Comenius University Bratislava. "We believe that only wise and educated people can cultivate our society. That is why Tatra Banka Foundation focuses on the arts, education and digital innovation. It has been our long-term goal to help improve the level of education in Slovakia. We have therefore been enabling inspiring lectures by acclaimed laureates of the Nobel Prize and the Pulitzer Prize for over ten years. It is a great honour to have our invitation accepted by three-time Pulitzer Prize winner Matt Apuzzo this year. His lecture, Through Real Threats to Real News, discusses a highly relevant topic and I hope it will be very interesting to a broader audience," said Michal Liday, Chairman of the Tatra Banka Foundation Board. "Matt Apuzzo is visiting Slovakia at a time when many people receive information from unverified sources, and politicians regularly attack journalists. Through his personal experience, he shows that independent and credible reporting is also under threat in the United States. He helps us understand that the weakening of the media is one of the first steps taken by those who are out to grab unlimited power," reacts Ján Pallo, Administrator of the Petit Academy Foundation. "The growing disrespect for information based on science and facts can be countered by top-notch independent journalism. I appreciate the fact that Comenius University will welcome Matt Apuzzo, reporter and three-time winner of the prestigious Pulitzer Prize, who often faced danger, but never gave up. His work is proof that first-rate, honest reporting can improve the world," says Marek Števček, the Rector of Comenius University Bratislava.]]> [RUK] Titulka - úzke novinky [RUK] Tlačové správy [RUK] Tlačové správy EN pr@uniba.sk Mon, 18 Oct 2021 15:22:00 +0200 https://uniba.sk/ Tuesday 26.10.2021, at 14:00 hod., Lecture room F2/125 Barbora Bezděková (Institute of Theoretical Physics, Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic):
On the Light Rays Propagating in Plasma Medium around Relativistic Objects
Abstract: 
Bending of light in a strong gravitational field is one of the crucial predictions of general relativity. Studies focusing on the light trajectories in the relativistic systems usually suppose that the gravitating object causing the curvature of the trajectories is set in vacuum. However, it turns out that in many astrophysical systems this assumption is not valid and it is also necessary to include the effects of refractive and dispersive media (plasma) surrounding the object. Including the medium into considerations is important - it can cause the rays to change substantially their form. The impact of refractive and dispersive media around compact objects is typically considered in problems related to the gravitational lensing. In our work we focus on how the regions allowed for propagation of rays in and close to the equatorial plane of a rotating black hole are modified due to the presence of the refractive and dispersive media with various density profiles. We investigate media with the density distributions corresponding to typical profiles of lensing galaxies, as well as with a toy model of density distribution often used in the literature - nonsingular isothermal sphere. We show that the regions permitted for the rays in a medium are substantially reduced as compared with the corresponding regions in vacuum. We also study allowed regions as seen by observers freely falling onto the black hole. ]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Peter.Matak@fmph.uniba.sk Mon, 18 Oct 2021 10:41:00 +0200