cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Favorable phase transitions induced by spinful electron-electron interactions in two-dimensional semimetal with a quadratic band crossing point
Creators: name: Fu, Yi-Sheng
name: Wang, Jing
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the effects of marginally spinful electron-electron interactions on the low-energy instabilities and favorable phase transitions in a two-dimensional (2D) spin-$1/2$ semimetal that owns a quadratic band crossing point (QBCP) parabolically touched by the upper and lower bands. In the framework of a renormalization group procedure, all sorts of interactions are treated on the equal footing to derive the coupled energy-dependent evolutions of all interaction couplings that govern the low-energy properties. Deciphering the essential physical information of such flows, we at first find that the tendencies of interaction parameters fall into three categories including Limit case, Special case, and General case based on the initial conditions. In addition, the 2D QBCP system is attracted to several distinct kinds of fixed points (FPs) in the interaction-parameter space, namely $\mathrm{FP}_1^{+}$/$\mathrm{FP}_2^{-}$, $\mathrm{FP}_1^{\pm}$/ $\mathrm{FP}_2^{\pm}$/$\mathrm{FP}_3^{\pm}$, and $\mathrm{FP}_1^{\pm}/\mathrm{FP}_3^{\pm}/\mathrm{FP}_{41,42,43}^{\pm}$ with the subscripts characterizing the features of FPs for the Limit, Special, and General cases, respectively. Furthermore, as approaching these FPs, we demonstrate that the spinful fermion-fermion interactions can induce a number of favorable instabilities accompanied by certain phase transitions. Specifically, the quantum anomalous Hall (QAH), quantum spin Hall (QSH), and nematic (Nem.) site(bond) states are dominant for $\mathrm{FP}_{1}^{\pm}$, $\mathrm{FP}_{2}^{\pm}$, and $\mathrm{FP}_{3}^{\pm}$, respectively. Rather, QSH becomes anisotropic nearby $\mathrm{FP}_{41,42,43}^{\pm}$ with one component leading and the others subleading. Besides, Nem.site(bond), chiral superconductivity, and nematic-spin-nematic (NSN.) site(bond) are subleading candidates around these FPs.
description: 20 pages, 12 figures, and 2 tables
Transkulturelle Medienproduktion in Freien Radios
Creators: name: Vojvoda, Alexander
Publisher: name: Medienimpulse
Year: 2011

description: Im Jahr 2006 erschien das Inter.Media Trainingsbuch als „Handbuch für TrainerInnen, MitarbeiterInnen und RedakteurInnen“ im freien Medienbereich. An diesem Buch haben acht Partnerinstitutionen aus sieben Ländern mitgearbeitet und ein Kompendium zusammengestellt, das einen umfangreichen Einblick in Möglichkeiten der Vermittlung transkultureller Medienkompetenzen gibt, aber genauso die Schwierigkeiten und Grenzen solcher Materialien aufzeigt.
description: Medienimpulse, Bd. 49 Nr. 1 (2011): 1/2011 - Politik/Macht/Medien
Usage of GPUs in ALICE Online and Offline processing during LHC Run 3
Creators: name: Rohr, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: ALICE will significantly increase its Pb--Pb data taking rate from the 1\,kHz of triggered readout in Run 2 to 50 kHz of continuous readout for LHC Run 3. Updated tracking detectors are installed for Run 3 and a new two-phase computing strategy is employed. In the first synchronous phase during the data taking, the raw data is compressed for storage to an on-site disk buffer and the required data for the detector calibration is collected. In the second asynchronous phase the compressed raw data is reprocessed using the final calibration to produce the final reconstruction output. Traditional CPUs are unable to cope with the huge data rate and processing demands of the synchronous phase, therefore ALICE employs GPUs to speed up the processing. Since the online computing farm performs a part of the asynchronous processing when there is no beam in the LHC, ALICE plans to use the GPUs also for this second phase. This paper gives an overview of the GPU processing in the synchronous phase, the full system test to validate the reference GPU architecture, and the prospects for the GPU usage in the asynchronous phase.
description: 11 pages, 8 figures, proceedings for vCHEP 2021
Ground state representation for the fractional Laplacian with Hardy potential in angular momentum channels
Creators: name: Bogdan, Krzysztof
name: Merz, Konstantin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Motivated by the study of relativistic atoms, we consider the Hardy operator $(-Δ)^{α/2}-κ|x|^{-α}$ acting on functions of the form $u(|x|) |x|^{\ell} Y_{\ell,m}(x/|x|)$ in $L^2(\mathbb{R}^d)$, when $κ\geq0$ and $α\in(0,2]\cap(0,d+2\ell)$. We give a ground state representation of the corresponding form on the half-line (Theorem 1.5). For the proof we use subordinated Bessel heat kernels.
description: 32 pages
Commerce multi-échelles autour du port de La Rochelle au XVIIIe siècle
Creators: name: Marzagalli, Silvia
name: Asselin, Cécile
name: Bouju, Alain
name: Charles, Loïc
name: Daudin, Guillaume
name: Geoffroy, Géraldine
name: Girard, Paul
name: Gourlet, Pauline
name: Mazoyer, Béatrice
name: de Mourat, Robin
name: Ooghe-Tabanou, Benjamin
name: Plique, Guillaume
name: Plumejeaud, Christine
name: Pourchasse, Pierrick
name: Sauzeau, Thierry
name: Théro, Héloïse
name: Zoffoli, Maxime
Publisher: name: Zenodo
Year: 2021

description: Visit the online publication source code for the PORTIC datasprint 2021 publication
Measurements of $ϕ$ meson production in relativistic heavy-ion collisions at RHIC
Creators: name: The STAR Collaboration
name: Abelev, B. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present results for the measurement of $ϕ$ meson production via its charged kaon decay channel $ϕ\to K^+K^-$ in Au+Au collisions at $\sqrt{s_{_{NN}}}=62.4$, 130, and 200 GeV, and in $p+p$ and $d$+Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV from the STAR experiment at the BNL Relativistic Heavy Ion Collider (RHIC). The midrapidity ($|y|<0.5$) $ϕ$ meson transverse momentum ($p_{T}$) spectra in central Au+Au collisions are found to be well described by a single exponential distribution. On the other hand, the $p_{T}$ spectra from $p+p$, $d$+Au and peripheral Au+Au collisions show power-law tails at intermediate and high $p_{T}$ and are described better by Levy distributions. The constant $ϕ/K^-$ yield ratio vs beam species, collision centrality and colliding energy is in contradiction with expectations from models having kaon coalescence as the dominant mechanism for $ϕ$ production at RHIC. The $Ω/ϕ$ yield ratio as a function of $p_{T}$ is consistent with a model based on the recombination of thermal $s$ quarks up to $p_{T}\sim 4$ GeV/$c$, but disagrees at higher transverse momenta. The measured nuclear modification factor, $R_{dAu}$, for the $ϕ$ meson increases above unity at intermediate $p_{T}$, similar to that for pions and protons, while $R_{AA}$ is suppressed due to the energy loss effect in central Au+Au collisions. Number of constituent quark scaling of both $R_{cp}$ and $v_{2}$ for the $ϕ$ meson with respect to other hadrons in Au+Au collisions at $\sqrt{s_{_{NN}}}$=200 GeV at intermediate $p_{T}$ is observed. These observations support quark coalescence as being the dominant mechanism of hadronization in the intermediate $p_{T}$ region at RHIC.
description: 22 pages, 21 figures, 4 tables
Analytical and Numerical Analysis of Circumbinary Disk Dynamics -- I: Coplanar Systems
Creators: name: Mahesh, Siddharth
name: McWilliams, Sean T.
name: Pirog, Michal
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present an analytical and numerical study of a system composed of a stellar binary pair and a massless, locally isothermal viscous accretion disk that is coplanar to the binary orbital plane. Analytically, we study the effect of the binary's gravitational potential over short timescales through the study of stability for epicyclic orbits, and over long timescales by revisiting the concept of resonant torques. Numerically, we perform two-dimensional Newtonian numerical simulations of the disk-binary system over a range of binary mass ratios. We find that the results of our simulations are consistent with previous numerical studies. We additionally show, by comparison of the analytical and numerical results, that the circumbinary gap is maintained on the orbital timescale through the driving of epicyclic instabilities, and does not depend on resonant torquing, contrary to standard lore. While our results are applicable to any disk-binary system, we highlight the importance of this result in the search for electromagnetic and gravitational-wave signatures from supermassive black-hole binaries.
Spin-dependent scattering in a silicon transistor
Creators: name: de Sousa, Rogerio
name: Lo, Cheuk Chi
name: Bokor, Jeffrey
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The scattering of conduction electrons off neutral donors depends sensitively on the relative orientation of their spin states. We present a theory of spin-dependent scattering in the two dimensional electron gas (2DEG) of field effect transistors. Our theory shows that the scattering mechanism is dominated by virtual transitions to negatively ionized donor levels. This effect translates into a source-drain current that always gets reduced when donor spins are at resonance with a strong microwave field. We propose a model for donor impurities interacting with conduction electrons in a silicon transistor, and compare our explicit numerical calculations to electrically detected magnetic resonance (EDMR) experiments. Remarkably, we show that EDMR is optimal for donors placed into a sweet spot located at a narrow depth window quite far from the 2DEG interface. This allows significant optimization of spin signal intensity for the minimal number of donors placed into the sweet spot, enabling the development of single spin readout devices. Our theory reveals an interesting dependence on conduction electron spin polarization p_c. As p_c increases upon spin injection, the EDMR amplitude first increases as p_{c}^{2}, and then saturates when a polarization threshold p_T is reached. These results show that it is possible to use EDMR as an in-situ probe of carrier spin polarization in silicon and other materials with weak spin-orbit coupling.
The Fröhlich-Morchio-Strocchi mechanism: A underestimated legacy
Creators: name: Maas, Axel
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: There is an odd tension in electroweak physics. Perturbation theory is extremely successful. At the same time, fundamental field theory gives manifold reasons why this should not be the case. This tension is resolved by the Fröhlich-Morchio-Strocchi mechanism. However, the legacy of this work goes far beyond the resolution of this tension, and may usher in a fundamentally and ontologically different perspective on elementary particles, and even quantum gravity.
description: 28 pages, 5 figures. Invited chapter to the memorial volume "Rigorous Trails Across Quantum and Classical Physics: A Volume in Tribute to Giovanni Morchio" v2: Legal notice added
Topological phase detection through high-harmonic spectroscopy in extended Su-Schrieffer-Heeger chains
Creators: name: Bera, Mohit Lal
name: de Almeida, Jessica O.
name: Dziurawiec, Marlena
name: Płodzień, Marcin
name: Maśka, Maciej M.
name: Lewenstein, Maciej
name: Grass, Tobias
name: Bhattacharya, Utso
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Su-Schrieffer-Heeger (SSH) chains are paradigmatic examples of 1D topological insulators hosting zero-energy edge modes when the bulk of the system has a non-zero topological winding invariant. Recently, high-harmonic spectroscopy has been suggested as a tool for detecting the topological phase. Specifically, it has been shown that when the SSH chain is coupled to an external laser field of a frequency much smaller than the band gap, the emitted light at harmonic frequencies strongly differs between the trivial and the topological phase. However, it remains unclear whether various non-trivial topological phases -- differing in the number of edge states -- can also be distinguished by the high harmonic generation (HHG). In this paper, we investigate this problem by studying an extended version of the SSH chain with extended-range hoppings, resulting in a topological model with different topological phases. We explicitly show that HHG spectra are a sensitive and suitable tool for distinguishing topological phases when there is more than one topological phase. We also propose a quantitative scheme based on tuning the filling of the system to precisely locate the number of edge modes in each topological phase of this chain.
description: 9 pages, 7 figures
Nowe źródło do dziejów polskich organizacji młodzieżowych w pierwszej połowie XX wieku – Pamiętniki Tomasza Piskorskiego (1898–1940)
Creators: name: Waingertner, Przemysław
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2021

description: T. Piskorski was one of the most important figures that shaped the Polish youth movement in the first half of the 20th century. Under the partitions he belonged to the leading figures of the National Youth Organization, the Polish Youth Union “Zet” and scouting. In the Second Republic he worked in the student movement as one of the leaders of the academic “Zet” and the Union of Polish Democratic Youth. He was one of the initiators of the creation of the Association of Seniors of the National Youth Organization (later – the Association of Seniors of the National Youth Organization and the Union of Polish Democratic Youth). He was among the leaders of the Polish Scouting Association. He was also a chronicler of the history of the “Zet” and scouting. After the outbreak of WW II, he participated in the September campaign. Taken captive by the Soviets, he was imprisoned in a camp in Starobielsk and murdered in April 1940. Since 1915, Piskorski has kept diaries, which are a report on his activities in the Polish student movement and scouting. During the Warsaw Uprising, most of them were destroyed. The saved notes (about 3700 p.) were found only a few years ago by the descendants of Piskorski. They are currently being prepared for publication by Piskorski’s grandson, Tomasz Chlebowski, who donated the originals to the Archiwum Akt Nowych.
description: Tomasz Piskorski był jedną z najważniejszych postaci, które kształtowały polski ruch młodzieżowy w pierwszej połowie XX w. Pod zaborami należał do czołowych postaci Organizacji Młodzieży Narodowej, Związku Młodzieży Polskiej „Zet” i polskiego skautingu. W Drugiej Rzeczypospolitej działał w ruchu studenckim jako jeden z liderów „Zetu” akademickiego i Związku Polskiej Młodzieży Demokratycznej. Należał do inicjatorów utworzenia Związku Seniorów Organizacji Młodzieży Narodowej (później – Związek Seniorów Organizacji Młodzieży Narodowej i Związku Polskiej Młodzieży Demokratycznej). Znalazł się w gronie przywódców Związku Harcerstwa Polskiego. Był także kronikarzem dziejów ruchu zetowego i polskiego harcerstwa. Po wybuchu II wojny światowej brał udział w kampanii wrześniowej. Wzięty do niewoli przez Sowietów, został osadzony w obozie w Starobielsku i zamordowany w kwietniu 1940 r. Od 1915 r. Tomasz Piskorski prowadził pamiętniki, stanowiące relację z jego działalności w polskim ruchu studenckim, skautingu i harcerstwie. W trakcie powstania warszawskiego ich większa część została zniszczona. Ocalone zapiski (około 3700 stron rękopisu) zostały odnalezione dopiero kilka lat temu przez potomków Piskorskiego. Obecnie są przygotowywane do opublikowania przez wnuka Piskorskiego, Tomasza Chlebowskiego, który ich oryginały przekazał Archiwum Akt Nowych.
Irreducible representations of simple Lie algebras by differential operators
Creators: name: Morozov, A.
name: Reva, M.
name: Tselousov, N.
name: Zenkevich, Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We describe a systematic method to construct arbitrary highest-weight modules, including arbitrary finite-dimensional representations, for any finite dimensional simple Lie algebra $\mathfrak{g}$. The Lie algebra generators are represented as first order differential operators in $\frac{1}{2} \left(\dim \mathfrak{g} - \text{rank} \, \mathfrak{g}\right) $ variables. All rising generators ${\bf e}$ are universal in the sense that they do not depend on representation, the weights enter (in a very simple way) only in the expressions for the lowering operators ${\bf f}$. We present explicit formulas of this kind for the simple root generators of all classical Lie algebras.
Opis kościoła parafialnego w Brzegach z 1884 roku
Creators: name: Karkocha, Małgorzata
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2021

description: Brzegi to niewielka miejscowość w powiecie jędrzejowskim, leżąca nad rzeką Nidą. Znajduje się tak murowany kościół parafialny pw. św. Mikołaja, wzniesiony w 1864 r. według projektu Henryka Marconiego, zniszczony w czasie groźnego pożaru w 1954 r. i odbudowany w latach sześćdziesiątych ubiegłego stulecia. Z dawnego wyposażenia zachował się m.in. barokowy ołtarz główny i łaskami słynący wizerunek Matki Boskiej Szkaplerznej, uratowany przez parafian z płonącej świątyni. Przykościelna murowana dzwonnica pochodzi z 1883 r. Publikowany dokument został sporządzony w 1884 r. przez miejscowego proboszcza, ks. Romana Płoszczyckiego. Przedstawia wygląd i stan kościoła parafialnego, jak również pozostałych zabudowań kościelnych (plebania, dzwonnica, organistówka). O wartości tego źródła świadczy niewątpliwie jego bogata warstwa informacyjna, przy czym wiele z opisanych w nim zabytków nie przetrwało do naszych czasów: padły łupem austriackich władz okupacyjnych (dzwony) bądź zostały strawione przez ogień (elementy wyposażenia).
description: Brzegi is a small village in the Jędrzejów poviat on the Nida River. It is located there a stone-built parish church under name of St. Nicholas, erected in 1864 according to the design by Henryk Marconi, destroyed during a blaze in 1954 and rebuilt in the 60s of the last century. From the old equipment preserved, among others, a baroque high altar and a miraculous image of Our Lady of the Scapular, rescued by parishioners from the burning temple. The stone bell tower next to church was built in 1883. The published document has been draw up in 1884 by a local priest Roman Płoszczycki. It presents the appearance and condition of the parish church, as well as other church buildings (a clergy house, a belfry, an organist’s house). The value of this source is undoubtedly evidenced by its rich information layer, and many of the monuments described in it have not survived to our times: they fell prey to the Austrian occupation authorities (the bells) or were destroyed by fire (the equipment elements).
Topological spin-current in non-centrosymmetric superconductors
Creators: name: Tanaka, Yukio
name: Yokoyama, Takehito
name: Balatsky, Alexander V.
name: Nagaosa, Naoto
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the spin transport properties of the non-centrosymmetric superconductor with time-reversal-symmetry where spin-triplet $(p_{x} \pm i p_{y})$-wave and spin-singlet s-wave pair potential can mix each other. We show that when the amplitude of $(p_{x} \pm ip_{y})$-wave pair potential is larger than that of s-wave one, the superconducting state belongs to the topologically nontrivial class analogous to the quantum spin Hall system, and the resulting helical edge modes as Andreev bound states are topologically protected. We find that the incident angle dependent spin polarized current flows through the interface due to the presence of the helical edge modes. With a weak magnetic field, also the angle-integrated current is strongly spin polarized.
MMORPGs 360°: Virtuelle Welten & moderne Mediennutzung wissenschaftlich betrachtet
Creators: name: Stingeder, Karl H.
Publisher: name: Medienimpulse
Year: 2011

description: Verlag: Edition Nove Erscheinungsdatum: 1. August 2008 ISBN: 3852513855
description: Medienimpulse, Bd. 49 Nr. 1 (2011): 1/2011 - Politik/Macht/Medien
Thermodynamics of ultracold trapped gases. Generalized mechanical variables, equation of state and heat capacity
Creators: name: Sandoval-Figueroa, Nadia
name: Romero-Rochín, Víctor
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The thermodynamics framework of an interacting quantum gas trapped by an arbitrary external potential is reviewed. We show that for each confining potential, in the thermodynamic limit, there emerge "generalized" volume and pressure variables ${\cal V}$ and ${\cal P}$, that replace the usual volume and hydrostatic pressure of a uniform system. This scheme is validated with the derivation of the virial expansion of the grand potential. We show that this approach yields experimentally amenable procedures to find the equation of state of the fluid, ${\cal P} = {\cal P}({\cal V}/N,T)$ with $N$ the number of atoms, as well as its heat capacity at constant generalized volume $C_{\cal V} = C_{\cal V}({\cal V},N,T)$. With these two functions, all the thermodynamics properties of the system may be found. As specific examples we study weakly interacting Bose gases trapped by harmonic and by linear quadrupolar potentials within the Hartree-Fock approximation. Comparisons with experimental results of a $^{23}$Na ultracold gas are also presented. We claim that this route should provide an additional and useful tool to analyze both the thermodynamic variables of a trapped gas as well as its elementary excitations.
„Przez całe życie służ sprawie oswobodzenia Polski […]. Broń […] zagrożonej ziemi polskiej […]” . Garść uwag na marginesie monografii Przemysława Waingertnera, Konspiracja trzech pokoleń Związek Młodzieży Polskiej „Zet” i ruch zetowy (1886–1996), wydanie drugie, Łódź 2018, 635 ss.
Creators: name: Charczuk, Wiesław
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2021

description: Tekst stanowi recenzję książki Przemysława Waingertnera Konspiracja trzech pokoleń. Związek Młodzieży Polskiej „Zet” i ruch zetowy (1886–1996), Łódź 2018. Rzeczona praca to pionierskie studium ukazujące konspirację kilku pokoleń Związku Młodzieży Polskiej „Zet” i ruchu zetowego. Autor recenzji omawia zawartość monografii, wskazuje jej zalety, jak również egzemplifikuje sugestie krytyczne, dostrzegając również nowatorskie spojrzenie na ten wycinek historii Obozu Narodowego. Autor recenzji mimo wypunktowania sugestii krytycznych ogólnie wysoko ocenia dzieło pióra Przemysława Waingertnera
description: The text is a review of Przemysław Waingertner’s book: Conspiracy of the Three Generations Polish Youth Union „Zet” and the Zet Movement (1886–1996), Łódź 2018. This work is a pioneering study showing the conspiracy of several generations of the Polish Youth Union „Zet” and the Zet movement. The author of the review discusses the content of the monograph, points to its advantages, and exemplifies critical suggestions, noticing an innovative approach to this section of the history of the National Camp. The author of the review, despite listing critical suggestions, generally appreciates the work by Przemysław Waingertner.
Spór o powody marginalizacji Radziwiłłów birżańskich przez Zygmunta III i o genezę negatywnego wizerunku króla w historiografii
Creators: name: Szpaczyński, Przemysław P.
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2021

description: The dispute over the reasons for the marginalization of the Radziwiłł family (Birżai) by Sigismund III and the genesis of the negative image of the King in historiography The polemic article discusses a monography by Karol Żojdź about the party of Sigismud III in the Grand Duchy of Lithuania in the first two decades of the 17th century. The polemic focuses mainly on the marginalization of the Radziwiłł family (Birżai) by Sigismund III and the genesis of the negative image of the King in historiography.
description: Artykuł polemiczny dotyczy monografii autorstwa Karola Żojdzia (Wszyscy ludzie króla. Zygmunt III Waza i jego stronnicy w Wielkim Księstwie Litewskim w pierwszych dekadach XVII wieku, Toruń 2019). Polemika odnosi się do kwestii marginalizacji Radziwiłłów birżańskich przez Zygmunta III i genezy negatywnego wizerunku króla w historiografii
The Ionization and Destruction of Polycyclic Aromatic Hydrocarbons in Powerful Quasars
Creators: name: Xie, Yanxia
name: Ho, Luis C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We reanalyze the mid-infrared (5-40 $μ$m) Spitzer spectra of 86 low-redshift ($z < 0.5$) Palomar-Green quasars to investigate the nature of polycyclic aromatic hydrocarbon (PAH) emission and its utility as a star formation rate (SFR) indicator for the host galaxies of luminous active galactic nuclei (AGNs). We decompose the spectra with our recently developed template-fitting technique to measure PAH fluxes and upper limits, which we interpret using mock spectra that simulate the effects of AGN dilution. While luminous quasars can severely dilute and affect the detectability of emission lines, PAHs are intrinsically weak in some sources that are otherwise gas-rich and vigorously forming stars, conclusively demonstrating that powerful AGNs destroy PAH molecules. Comparing PAH-based SFRs with independent SFRs derived from the mid-infrared fine-structure neon lines and the total infrared luminosity reveals that PAHs can trace star formation activity in quasars with bolometric luminosities $\lesssim 10^{46}\, \rm erg\,s^{-1}$, but increasingly underestimate the SFR for more powerful quasars, typically by $\sim 0.5$ dex. Relative to star-forming galaxies and low-luminosity AGNs, quasars have a comparable PAH 11.3 $μ$m/7.7 $μ$m ratio but characteristically lower ratios of 6.2 $μ$m/7.7 $μ$m, 8.6 $μ$m/7.7 $μ$m, and 11.3 $μ$m/17.0 $μ$m. We suggest that these trends indicate that powerful AGNs preferentially destroy small grains and enhance the PAH ionization fraction.
description: 20 pages, 11 figures and 1 Table. Accepted for publication in ApJ
Path integral representation of spin foam models of 4d gravity
Creators: name: Conrady, Florian
name: Freidel, Laurent
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We give a unified description of all recent spin foam models introduced by Engle, Livine, Pereira and Rovelli (ELPR) and by Freidel and Krasnov (FK). We show that the FK models are, for all values of the Immirzi parameter, equivalent to path integrals of a discrete theory and we provide an explicit formula for the associated actions. We discuss the relation between the FK and ELPR models and also study the corresponding boundary states. For general Immirzi parameter, these are given by Alexandrov's and Livine's SO(4) projected states. For 0 <= gamma < 1, the states can be restricted to SU(2) spin networks.
description: 29 pages, 6 figures
Quelques exemples intéressants de donjuanisme chez Balzac : formes et variations
Creators: name: Lau-Pau, Claude
Publisher: name: University of British Columbia
Year: 2010

description: Une lecture attentive d'un nombre meme restreint de romans de "la Comedie humaine" revele toute la force vitale du theme de don Juan sur l'imaginaire de Balzac. Apres avoir brosse un court historique de la legende de don Juan, nous avons propose une definition prealable du donjuanisme. Cette definition nous permet de constater qu'en general, les grands roles masculins de "la Comedie humaine" sont tenus non pas par des don Juans, mais par des dandys. En particulier, nous voyons que le Rastignac du "Pere Goriot" est beaucoup plus attire par le pouvoir que parries femmes. De meme, Henry de Marsay, un homme tout a fait exceptionnel par son physique et son intellect, se revele trop blase par des conquetes faciles pourqu'on puisse le prendre pour un vrai don Juan. Toutefois ces cas particuliers n'empechent pas "la Comedie humaine" d'etre abondamment fournie en seducteurs "purs et simples" comme, par exemple, le comte de la Palferine. Cependant, et le fait est important, certaines des reines de la societe aristocratique n'ont rien a envier aux vrais don Juans. Notre etude examine quelques-uns de ces curieux personnages feminins dont Camille Maupin (croyant augmenter ses chances de plaire, ce personnage cul-tive les arts d'agrement et ne reussit qu'a s'ecarter encore plus d'une societe qui ne voit en elle qu'un don Juan femme), Antoinette de Langeais (delaissee par un mari indifferent, cette reine de la societe aristocratique s'ingenie h faire grandir la passion d'un homme qu'elle refuse d'aimer, et Foedora (cette femme-arriviste, que tant de vaniteux aiment & cause de sa fortune et de son luxe, reste insensible aux marques d'amour les plus tendres). Nos recherches nous ont done permis d'ecarter l'hypothese commune que les grands roles masculins de la Comedie humaine seraient tenus par des don Juans. Par contre, nous montrons que le donjuanisme de certaines des reines de la societe aristocratique poss&de une dynamique et une expression des plus interessantes. Nous avons pu egalement constater que, parfois, les don Juans-femmes deviennent de vraies femmes quand elles decouvrent enfin l'amour.
Exodus to the Virtual World. How Online Fun is Changing Reality
Creators: name: Stingeder, Karl H.
Publisher: name: Medienimpulse
Year: 2011

description: Verlag: Palgrave Macmillan Erscheinungsdatum: 11. November 2008 ISBN: 0230607853
description: Medienimpulse, Bd. 49 Nr. 1 (2011): 1/2011 - Politik/Macht/Medien
Jahrgangsstufenspezifischer Vergleich der motivationalen Regulation im Biologieunterricht und des individuellen Interesses an biologischen Themen von Schülerinnen und Schülern der Sekundarstufe I
Creators: name: Großmann, Nadine
name: Kaiser, Lisa-Maria
name: Salim, Bilal
name: Ahmed, Abdul-Karim
name: Wilde, Matthias
Publisher: name: Zeitschrift für Didaktik der Biologie (ZDB) - Biologie Lehren und Lernen
Year: 2021

description: Häufig wird vom negativen Entwicklungstrend des Interesses sowie der selbstbestimmten Motivationsqualität im Verlauf der Sekundarstufe I berichtet. Studien zu diesen Entwicklungstrends, im Besonderen für das Fach Biologie, liegen jedoch nur spärlich oder veraltet vor. Die vorliegenden Querschnittsstudien untersuchten daher, ob sich die motivationalen Voraussetzungen von Schülerinnen und Schülern im Biologieunterricht zwischen den verschiedenen Jahrgangsstufen der Sekundarstufe I unterscheiden. Hierfür wurden 845 Schülerinnen und Schüler der Jahrgangsstufen 5 bis 9 bezüglich ihrer selbst- und fremdbestimmten motivationalen Regulation im Biologieunterricht sowie 1187 Schülerinnen und Schüler dieser Jahrgangsstufen bezüglich ihres individuellen Interesses an biologischen Themen befragt. Signifikante Unterschiede in der selbstbestimmten motivationalen Regulation sowie im individuellen Interesse bestehen im Vergleich jeder Jahrgangsstufe mit den jeweils vorhergehenden Jahrgangsstufen. In den vorhergehenden Jahrgangsstufen sind die selbstbestimmte motivationale Regulation sowie das individuelle Interesse höher ausgeprägt als in der jeweils untersuchten Jahrgangsstufe. Eine Ausnahme bildet der Vergleich des individuellen Interesses in der Jahrgangsstufe 9 und vorhergehenden Jahrgangsstufen. Für diesen Vergleich sowie für alle jahrgangsstufenspezifische Vergleiche der fremdbestimmten motivationalen Regulation sind keine signifikanten Unterschiede zu verzeichnen.
description: Zeitschrift für Didaktik der Biologie (ZDB) - Biologie Lehren und Lernen, Bd. 25 (2021)
Wie wirkt die Krone?
Creators: name: Arendt, Florian
Publisher: name: Medienimpulse
Year: 2010

description: Die Kronen Zeitung wird für ihre tendenzielle Berichterstattung vielfach kritisiert. Ergänzend dazu wird über die „Macht“ der Kronen Zeitung in der öffentlichen und veröffentlichten Meinung viel spekuliert. Der vorliegende Beitrag versucht den Stand der Forschung bezüglich der Wirkung der Kronen Zeitung auf ihre Leser und Leserinnen zusammenzufassen. Es zeigt sich, dass die Nutzungshäufigkeit der Kronen Zeitung mit Realitätseinschätzungen, Einstellungen, Verhalten und Themenwichtigkeit korreliert. Zudem gibt es erste empirische Belege, dass zumindest ein Teil der gefundenen Zusammenhänge ursächlich der Krone-Nutzung zugeschrieben werden kann. Da es nur wenige empirische Studien gibt, wird argumentiert, dass mehr Forschung bezüglich der Wirkung der Kronen Zeitung notwendig ist.
description: Medienimpulse, Bd. 48 Nr. 2 (2010): 2/2010 - Medienethik
Evaluacion de la contaminacion del aire por material particulado pm2.5 en la ciudad del cusco respecto de los indices de calidad del aire entre 2017 y 2018
Creators: name: Warthon, Bruce
name: Miranda, Ivan
name: Ccolque, Iván Quispe
name: Ponce, Rafael
name: Salcedo, Victor Ramos
name: Zamalloa, Ariatna
name: Tupayachi, Ruben
name: Warthon, Julio
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In this scientific article, the data on air pollution by PM2.5 particulate matter was evaluated in different locations in the city of Cusco with respect to the Environmental Quality Indexes (INCA) of the Ministry of the Environment of the Peruvian Government. The results show that air pollution in the city of Cusco is an environmental risk problem. More than 84% of the monitored sites have a bad rating (101-500), the corresponding color is orange. This result shows that the air that citizens of Cusco breathe is of poor quality and the population could experience health problems. The recommendation is to avoid outdoor exercises and activities. In the district of San Jeronimo Cusco, the average concentration has been 125 ug/m3, which corresponds to the INCA interval of more than 125, within the red color threshold for care. The health effects are described as chronic lung and cardiovascular diseases, and the health authority should declare levels of alert. It has been concluded that according to INCA, the air in the city of Cusco is of poor quality and falls within the threshold of the Care State Value (VUEC).
description: in Spanish language
SNR optimization of multi-span fiber optic communication systems employing EDFAs with non-flat gain and noise figure
Creators: name: Yankov, Metodi Plamenov
name: Kaminski, Pawel Marcin
name: Hansen, Henrik Enggaard
name: Da Ros, Francesco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Networking and Internet Architecture (cs.NI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Throughput optimization of optical communication systems is a key challenge for current optical networks. The use of gain-flattening filters (GFFs) simplifies the problem at the cost of insertion loss, higher power consumption and potentially poorer performance. In this work, we propose a component wise model of a multi-span transmission system for signal-to-noise (SNR) optimization. A machine-learning based model is trained for the gain and noise figure spectral profile of a C-band amplifier without a GFF. The model is combined with the Gaussian noise model for nonlinearities in optical fibers including stimulated Raman scattering and the implementation penalty spectral profile measured in back-to-back in order to predict the SNR in each channel of a multi-span wavelength division multiplexed system. All basic components in the system model are differentiable and allow for the gradient descent-based optimization of a system of arbitrary configuration in terms of number of spans and length per span. When the input power profile is optimized for flat and maximized received SNR per channel, the minimum performance in an arbitrary 3-span experimental system is improved by up to 8 dB w.r.t. a system with flat input power profile. An SNR flatness down to 1.2 dB is simultaneously achieved. The model and optimization methods are used to optimize the performance of an example core network, and 0.2 dB of gain is shown w.r.t. solutions that do not take into account nonlinearities. The method is also shown to be beneficial for systems with ideal gain flattening, achieving up to 0.3 dB of gain w.r.t. a flat input power profile.
description: submitted to JLT
Non-Abelian transport distinguishes three usually equivalent notions of entropy production
Creators: name: Upadhyaya, Twesh
name: Braasch,, William F.
name: Landi, Gabriel T.
name: Halpern, Nicole Yunger
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We extend entropy production to a deeply quantum regime involving noncommuting conserved quantities. Consider a unitary transporting conserved quantities ("charges") between two systems initialized in thermal states. Three common formulae model the entropy produced. They respectively cast entropy as an extensive thermodynamic variable, as an information-theoretic uncertainty measure, and as a quantifier of irreversibility. Often, the charges are assumed to commute with each other (e.g., energy and particle number). Yet quantum charges can fail to commute. Noncommutation invites generalizations, which we posit and justify, of the three formulae. Charges' noncommutation, we find, breaks the formulae's equivalence. Furthermore, different formulae quantify different physical effects of charges' noncommutation on entropy production. For instance, entropy production can signal contextuality - true nonclassicality - by becoming nonreal. This work opens up stochastic thermodynamics to noncommuting - and so particularly quantum - charges.
description: 11 pages (5 figures) + appendices (14 pages)
Certificates of Nonexistence for Lyapunov-Based Stability, Stabilizability and Detectability of LPV Systems
Creators: name: Meijer, T. J.
name: Dolk, V. S.
name: Heemels, W. P. M. H.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: By computing Lyapunov functions of a certain, convenient structure, Lyapunov-based methods guarantee stability properties of the system or, when performing synthesis, of the relevant closed-loop or error dynamics. In doing so, they provide conclusive affirmative answers to many analysis and design questions in systems and control. When these methods fail to produce a feasible solution, however, they often remain inconclusive due to (a) the method being conservative or (b) the fact that there may be multiple causes for infeasibility, such as ill-conditioning, solver tolerances or true infeasibility. To overcome this, we develop LMI-based theorems of alternatives based upon which we can guarantee, by computing a so-called certificate of nonexistence, that no poly-quadratic Lyapunov function exists for a given linear parameter-varying system. We extend these ideas to also certify the nonexistence of controllers and observers for which the corresponding closed-loop/error dynamics admit a poly-quadratic Lyapunov function. Finally, we illustrate our results in some numerical case studies.
Polsko-belgijskie stosunki handlowe w latach 1945–1976 w świetle polskich materiałów archiwalnych
Creators: name: Jarosz, Dariusz
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2021

description: W artykule dokonano ustaleń dotyczących polsko-belgijskich relacji handlowych w latach 1945–1976. Na podstawie kwerend archiwalnych przeprowadzone zostały analizy porozumień regulujących stosunki handlowe, zaproponowano periodyzację w zakresie współpracy gospodarczej. Studium próbuje odpowiedzieć na pytanie, jakie były najważniejsze problemy tych stosunków, w tym zwłaszcza bariery utrudniające wymianę towarową.
description: The article presents findings concerning Polish-Belgian trade relations in the years 1945–1976. Based on archive searches, an analysis of agreements regulating trade relations was carried out, and a periodisation of economic cooperation was proposed. The study attempts to answer the question what were the most important problems of these relations, especially the barriers impeding the exchange of goods.
Świadectwo Ryszarda Walewskiego dotyczące Żydowskiego Związku Wojskowego i powstania w getcie warszawskim
Creators: name: Flisiak, Dominik
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2021

description: Prezentowany tekst jest poświecony Ryszardowi Walewskiemu i jego świadectwu na temat Żydowskiego Związku Wojskowego i walk w getcie warszawskim. Do tej pory świadectwa Ryszarda Walewskiego były rzadko wykorzystywane do badań nad żydowskim życiem w getcie warszawskim. Po upadku powstania w getcie warszawskim podwładni Walewskiego prowadzili działania partyzanckie. Osobnym zadaniem grupy Walewskiego była ochrona ludności cywilnej, która pozostała na terenie getta. Bojownicy starali się zapewnić bezpieczne schronienie oraz pożywienie. W tym celu wprowadzone zostało m.in. racjonowanie wody i żywności, a także starano się nawiązać kontakt z Polakami gotowymi do udzielenia pomocy.
description: The presented text is devoted to Ryszard Walewski and his testimonies about the Jewish Military Union and the fighting in the Warsaw Ghetto. Until now, Ryszard Walewski’s testimonies were rarely used for research into Jewish life in the Warsaw Ghetto. After the fall of the Warsaw Ghetto Uprising, Walewski’s subordinate conducted guerrilla activities. A separate task of the Walewski group was to protect the civilians who remained in the ghetto. The fighters tried to provide safe shelter and food. To this end, rationing of water and food was introduced, and attempts were made to contact the Poles ready to help.
A chiral aperiodic monotile
Creators: name: Smith, David
name: Myers, Joseph Samuel
name: Kaplan, Craig S.
name: Goodman-Strauss, Chaim
Publisher: name: arXiv
Year: 2023
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: F.2.2; G.2.1
subject: 05B45, 52C20 (Primary) 05B50 (Secondary)

description: The recently discovered "hat" aperiodic monotile mixes unreflected and reflected tiles in every tiling it admits, leaving open the question of whether a single shape can tile aperiodically using translations and rotations alone. We show that a close relative of the hat -- the equilateral member of the continuum to which it belongs -- is a weakly chiral aperiodic monotile: it admits only non-periodic tilings if we forbid reflections by fiat. Furthermore, by modifying this polygon's edges we obtain a family of shapes called Spectres that are strictly chiral aperiodic monotiles: they admit only chiral non-periodic tilings based on a hierarchical substitution system.
description: 25 pages, 12 figures. Copyedited journal version of article
Spatially Resolved Far-Ultraviolet Spectroscopy of the Nuclear Region of NGC 1068
Creators: name: Zheng, W.
name: Wang, J.
name: Kriss, G. A.
name: Sahnow, D.
name: Allen, M.
name: Dopita, M.
name: Tsvetanov, Z.
name: Bicknell, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We carry out high-resolution FUSE spectroscopy of the nuclear region of NGC 1068. The first set of spectra was obtained with a 30" square aperture that collects all emission from the narrow-line region. The data reveal a strong broad OVI component of FWHM ~3500 kms-1 and two narrow OVI 1031/1037 components of ~350 kms-1. The CIII 977 and NIII 991 emission lines in this spectrum can be fitted with a narrow component of FWHM ~1000 kms-1 and a broad one of ~2500 kms-1. Another set of seven spatially resolved spectra were made using a long slit of 1.25" X 20", at steps of ~1" along the axis of the emission-line cone. We find that (1) Major emission lines in the FUSE wavelength range consist of a broad and a narrow component; (2) There is a gradient in the velocity field for the narrow OVI component of ~200 kms-1 from ~2" southwest of the nucleus to ~4" northeast. A similar pattern is also observed with the broad OVI component, with a gradient of ~3000 kms-1. These are consistent with the HST/STIS findings and suggest a biconical structure in which the velocity field is mainly radial outflow; (3) A major portion of the CIII and NIII line flux is produced in the compact core. They are therefore not effective temperature diagnostics for the conical region; and (4) The best-fitted UV continuum suggests virtually no reddening, and the HeII 1085/1640 ratio suggests a consistently low extinction factor across the cone.
description: To appear in the Astrophysical Journal. 37 pages with 12 figures
CodeX - gib du dir den Ehrencodex!
Creators: name: Pöyskö, Anu
name: Hagen, Frank
name: Lindner, Georg
name: Rohrer, Matthias
Publisher: name: Medienimpulse
Year: 2010

description: Medienimpulse, Bd. 48 Nr. 2 (2010): 2/2010 - Medienethik