cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Probing the neutral edge modes in transport across a point contact via thermal effects in the Read-Rezayi non-abelian quantum Hall states
Creators: name: Grosfeld, Eytan
name: Das, Sourin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Non-abelian quantum Hall states are characterized by the simultaneous appearance of charge and neutral gapless edge modes, with the structure of the latter being intricately related to the existence of bulk quasi-particle excitations obeying non-abelian statistics. In general, it is hard to probe the neutral modes in charge transport measurements and a thermal transport measurement seems to be inevitable. Here we propose a setup which can get around this problem by having two point contacts in series separated by a distance set by the thermal equilibration length of the charge mode. We show that by using the first point contact as a heating device, the excess charge noise measured at the second point contact carries a non-trivial signature of the presence of the neutral mode hence leading to its indirect detection. We also obtain explicit expressions for the thermal conductance and corresponding Lorentz number for transport across a quantum point contact between two edges held at different temperatures and chemical potentials.
Average-Time Games on Timed Automata
Creators: name: Jurdzinski, Marcin
name: Trivedi, Ashutosh
Publisher: name: arXiv
Year: 2009
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: An average-time game is played on the infinite graph of configurations of a finite timed automaton. The two players, Min and Max, construct an infinite run of the automaton by taking turns to perform a timed transition. Player Min wants to minimise the average time per transition and player Max wants to maximise it. A solution of average-time games is presented using a reduction to average-price game on a finite graph. A direct consequence is an elementary proof of determinacy for average-time games. This complements our results for reachability-time games and partially solves a problem posed by Bouyer et al., to design an algorithm for solving average-price games on priced timed automata. The paper also establishes the exact computational complexity of solving average-time games: the problem is EXPTIME-complete for timed automata with at least two clocks.
Questioning of communism : a study of conflict in Czechoslovakia in 1968
Creators: name: Cicvak, Elias
Publisher: name: University of British Columbia
Year: 2011

description: The purpose of this thesis is to study the conflict in Czechoslovakia in 1968 which developed through different stages of the questioning of Communism since the Communist takeover in 1948. The term "Questioning of Communism" refers to the examination of the basic principles and practices of Communism on which the Communist Party operates. The principles of Communism include such principles as "democratic centralism", the leading role of the Communist Party, the monopoly of power, the "nationality question", centralized planning, political bureaucracy in the society, etc. This study deals with the two areas of conflict: outside the Communist Party of Czechoslovakia, and inside the party. Outside the party, conflict erupted between the social groups (such as the economists, the Slovaks, the students, the intellectuals and the non-Communist political parties) and the party. Conflict within the party erupted between the conservatives and the liberals and resulted in the change in the leadership in the party in 1968. This thesis concentrates mostly on the causes of conflict and its roots prior to 1968, and on the accommodation of conflict by the Communist Party in 1968. Prior to 1968, conflict was not accommodated by the party. Rather, the participants in conflict were suppressed by the Communist Party. An analysis of conflict in Czechoslovakia in 1968 confirms that Czechoslovakia does not conform to the pattern of violent conflict in Communist states illustrated by the experience of East Germany, Poland and Hungary. A new pattern of accommodation of conflict by the Communist Party introduced in Czechoslovakia in 1968 was due to the liberal democratic policies of the Communist Party leadership under Alexander Dubcek. However, despite the successful domestic policies of the Communist Party of Czechoslovakia, Czechoslovakia did not succeed in her democratic experiment because she neglected her foreign policy with the Soviet Union.
Stability of the synchronization manifold in nearest neighbors non identical van der Pol-like oscillators
Creators: name: Yamapi, R.
name: Kadji, H. G. Enjieu
name: Filatrella, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We investigate the stability of the synchronization manifold in a ring and an open-ended chain of nearest neighbors coupled self-sustained systems, each self-sustained system consisting of multi-limit cycles van der Pol oscillators. Such model represents, for instance, coherent oscillations in biological systems through the case of an enzymatic-substrate reaction with ferroelectric behavior in brain waves model. The ring and open-ended chain of identical and non-identical oscillators are considered separately. By using the Master Stability Function approach (for the identical case) and the complex Kuramoto order parameter (for the non-identical case), we derive the stability boundaries of the synchronized manifold. We have found that synchronization occurs in a system of many coupled modified van der Pol oscillators and it is stable even in presence of a spread of parameters.
description: To appear on Nonlinear Dynamics, 2010
Ensuring Comparability of Measured Results in Aerosol-related Experiments
Creators: name: Klauck, Michael
name: Allelein, Hans-Josef
name: Trollmann, Kathrin
name: Wu, Yihui
name: Vennemann, René
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: 20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-20), Washington, USA, 20 Aug 2023 - 25 Aug 2023
description: See attached file
Thermodynamics of charmed hadrons across chiral crossover from lattice QCD
Creators: name: Sharma, Sipaz
name: Karsch, Frithjof
name: Petreczky, Peter
Publisher: name: arXiv
Year: 2025
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use up to fourth-order charm fluctuations and their correlations with net baryon number, electric charge, and strangeness fluctuations, calculated within the framework of lattice QCD, to study the continuum partial pressure contributions of charmed baryons and mesons. We show that, at and below the chiral crossover temperature, these partial pressures receive enhanced contributions from experimentally unobserved charmed hadrons predicted by the Quark Model. Additionally, we demonstrate that at the chiral crossover, the Hadron Resonance Gas description breaks down, signaling the modification of open charm hadrons and thereby implying the onset of charm deconfinement. We present evidence for the survival of low-lying non-radial $1S$ and $1P$ hadron-like excitations above the chiral crossover, which hints at the sequential melting of charmed hadrons. Finally, we investigate the continuum partial pressure contribution of charm quark-like excitation that emerges at the chiral crossover and calculate its temperature-dependent in-medium mass.
description: 6 pages, 6 figures; contribution to the proceedings of EMMI Workshop in Wroclaw "Aspects of Criticality II". Made modifications based on the Referee report
Phonon surface mapping of graphite: disentangling quasi--degenerate phonon dispersions
Creators: name: Grüneis, A.
name: Serrano, J.
name: Bosak, A.
name: Lazzeri, M.
name: Molodtsov, S. L.
name: Wirtz, L.
name: Attaccalite, C.
name: Krisch, M.
name: Rubio, A.
name: Mauri, F.
name: Pichler, T.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The two-dimensional mapping of the phonon dispersions around the $K$ point of graphite by inelastic x-ray scattering is provided. The present work resolves the longstanding issue related to the correct assignment of transverse and longitudinal phonon branches at $K$. We observe an almost degeneracy of the three TO, LA and LO derived phonon branches and a strong phonon trigonal warping. Correlation effects renormalize the Kohn anomaly of the TO mode, which exhibits a trigonal warping effect opposite to that of the electronic band structure. We determined the electron--phonon coupling constant to be 166$\rm(eV/Å)^2$ in excellent agreement to $GW$ calculations. These results are fundamental for understanding angle-resolved photoemission, double--resonance Raman and transport measurements of graphene based systems.
Initial state nuclear effects for jet production measured in $\sqrt{s_\mathrm{NN}} = 200 \mathrm{GeV}$ d+Au collisions by STAR
Creators: name: Kapitan, Jan
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Full jet reconstruction in heavy-ion collisions is a promising tool for quantitative study of properties of the dense medium produced at RHIC. Measurements of d+Au collisions are important to disentangle initial state nuclear effects from medium-induced $k_\mathrm{T}$ broadening and jet quenching. We report measurements of mid-rapidity ($|η_{jet}| < 0.4|$) di-jet correlations in d+Au using high-statistics run 8 RHIC data at $\sqrt{s_\mathrm{NN}} = 200 \mathrm{GeV}$.
description: 2 pages, 2 figures - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennessee
Phase-imprint induced domain formations and spin dynamics in spinor condensates
Creators: name: Tao, Chengjun
name: Gu, Qiang
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We demonstrate that certain domain structures can be created both in ferro- and antiferro-magnetic spinor condensates if the initial phase is spatially modulated. Meanwhile, spin dynamics of the condensate with modulated phases exhibits exotic features in comparison with those of a condensate with a uniform phase. We expect that these phenomena could be observed experimentally using a phase-imprinting method.
description: 5 pages, 5 figures, to appear in Phys. Rev. A
Globular Cluster Systems in Nearby Dwarf Galaxies: I. HST/ACS Observations and Dynamical Properties of Globular Clusters at Low Environmental Density
Creators: name: Georgiev, Iskren Y.
name: Puzia, Thomas H.
name: Hilker, Michael
name: Goudfrooij, Paul
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the old globular cluster (GC) population of 68 faint (Mv>-16 mag) dwarf galaxies located in the halo regions of nearby (<12 Mpc) loose galaxy groups and in the field environment based on archival HST/ACS images in F606W and F814W filters. The combined color distribution of 175 GC candidates peaks at (V-I)=0.96 +/- 0.07 mag and the GC luminosity function turnover for the entire sample is found at Mv,to = -7.6 +/- 0.11 mag, similar to the old metal-poor LMC GC population. Our data reveal a tentative trend of Mv,to becoming fainter from late-type to early-type galaxies. The luminosity and color distributions of GCs in dIrrs shows a lack of faint blue GCs. Our analysis reveals that this might reflect a relatively younger GC system than typically found in luminous early-type galaxies. If verified by spectroscopy this would suggest a later formation epoch of the first metal-poor star clusters in dwarf galaxies. We find several bright (massive) GCs which reside in the nuclear regions of their host galaxies. These nuclear clusters have similar luminosities and structural parameters as the peculiar Galactic clusters suspected of being the remnant nuclei of accreted dwarf galaxies, such as M54 and wCen. Except for these nuclear clusters, the distribution of GCs in dIrrs in the half-light radius vs. cluster mass plane is very similar to that of Galactic young halo clusters, which suggests comparable formation and dynamical evolution histories. A comparison with theoretical models of cluster disruption indicates that GCs in low-mass galaxies evolve dynamically as self-gravitating systems in a benign tidal environment.
description: MNRAS in press, 20 pages, 9 figures, 3 Tables (Full version of Figure 9 available upon request)
Polarization dependent Brillouin gain in randomly birefringent fibers
Creators: name: Ursini, Leonora
name: Santagiustina, Marco
name: Palmieri, Luca
Publisher: name: arXiv
Year: 2009
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: An extensive study of the alignment between the pump, the signal and the polarization dependent gain (PDG) vectors in stimulated Brillouin amplification in randomly birefringent fibers is realized by numerically integrating the equations governing the propagation. At the fiber output, the signal tends to align to the PDG vector for large pump power because of the nonlinear polarization pulling effect. The PDG vector, for large random birefringence, aligns to a state that has the same linear component of the pump but opposite circular component.
description: 3 pages submitted to IEEE Photonics Technology Letters
Dominant Spin-Flip Effects for the Hadronic Produced $J/ψ$ Polarization at TEVATRON
Creators: name: Wu, Xing-Gang
name: Fang, Zhen-Yun
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Dominant spin-flip effects for the direct and prompt $J/ψ$ polarizations at TEVATRON run II with collision energy 1.96 TeV and rapidity cut $|y^{J/ψ}|<0.6$, have been systematically studied, especially, the spin-flip effect for the transition of $(c\bar{c})_8[^3S_1]$ into $J/ψ$ has been carefully discussed. It is found that the spin-flip effect shall always dilute the $J/ψ$ polarization, and with a suitable choice of the parameters $a_{0,1}$ and $c_{0,1,2}$, the $J/ψ$ polarization puzzle can be solved to a certain degree. At large transverse momentum $p_t$, $α$ for the prompt $J/ψ$ is reduced by $\sim50%$ for $f_0 = v^2$ and by $\sim80%$ for $f_0=1$. We also study the indirect $J/ψ$ polarization from the $b$-decays, which however is slightly affected by the same spin-flip effect and then shall provide a better platform to determine the color-octet matrix elements.
description: 19 pages, 5 figures. References added. Revised version to be published in Phys.Rev.D
Tidal Dwarf Galaxies and missing baryons
Creators: name: Bournaud, Frederic
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Tidal dwarf galaxies form during the interaction, collision or merger of massive spiral galaxies. They can resemble "normal" dwarf galaxies in terms of mass, size, and become dwarf satellites orbiting around their massive progenitor. They nevertheless keep some signatures from their origin, making them interesting targets for cosmological studies. In particular, they should be free from dark matter from a spheroidal halo. Flat rotation curves and high dynamical masses may then indicate the presence of an unseen component, and constrain the properties of the "missing baryons", known to exist but not directly observed. The number of dwarf galaxies in the Universe is another cosmological problem that can be significantly impacted if tidal dwarf galaxies formed frequently at high redshift, when the merger rate was high, and many of them survived until today.
description: Tutorial Review for the special issue "Dwarf galaxies and Cosmology" in Advances in Astronomy. (10 pages, 4 figures)
Compressive Strength and Efficiency Factor of Green Concrete.pdf
Creators: name: Islam, Mohammad Momeen Ul
Publisher: name: figshare
Year: 2021
Subjects: subject: 90502 Construction Engineering
subject: FOS: Civil engineering
subject: 90503 Construction Materials
subject: 90599 Civil Engineering not elsewhere classified
subject: 90506 Structural Engineering

description: The efficacy of two palm oil industrial waste materials, namely palm oil fuel ash (POFA) and oil palm shell (OPS), as partial and whole replacement materials, respectively, for ordinary Portland cement (OPC) and conventional crushed granite aggregate on fresh and hardened concrete properties has been investigated and reported. OPC was partially replaced with POFA by weight proportion of 0%, 10%, 30%, and 50% cementitious material to produce the green concrete. The hardened concrete properties of the sustainable concrete developed through this research was investigated through ultrasonic pulse velocity (UPV) and cube compressive strength test. In addition, the efficiency factor was also calculated and reported. The compressive strength test was performed at 7-, 28-, 90- and 120-day for various concrete mixes, and the highest 28-day compressive strength of 40 MPa was found for the mix with 10% replacement of OPC POFA, hence could be categorized as lightweight concrete. The UPV values in the range of 3.89 to 4.09 km/s show quality of the concrete was good. Thus, the usefulness of POFA as partial cement replacement material in lightweight concrete with OPS as a whole replacement for conventional aggregate is feasible.
Theme of rootlessness in West Indian fiction
Creators: name: Jibodh, Cheryl Indra
Publisher: name: University of British Columbia
Year: 2011

description: This thesis acknowledges that a combination of circumstances has produced in the West Indies an almost wholly-immigrant population whose fundamental condition is one of rootlessness. It attempts to show that rootlessness manifests itself negatively in the literature in an inability to regard the West Indies as home, in the placelessness that is brought about by emigration, in an uncertainty as to identity, allegiances and origins, and in an existential self-alienation produced by acculturation. Chapter One is a selective account of relevant historical and sociological data that demonstrates how the condition of rootlessness and the accompanying feeling of loss and deprivation arose. It ends by trying to draw a parallel between the particular West Indian condition of rootlessness that sprang from a slave society and existential rootlessness as generally understood by Western philosophy. Chapters Two, Three and Four are studies of selected prose texts which treat this theme. The texts are grouped according to their setting. Chapter Two attempts a detailed analysis of three novels set in the West Indies which depict the rootlessness of an individual or sector of society against a larger uncreated society. They reflect two fundamental reactions to the condition of rootlessness — refusal to come to terms with the environment, and its opposite, the attempt to ground one's existence meaningfully. The novels that have been selected are: Patterson’s The Children of Sisyphus, Naipaul’s A House For Mr. Biswas and Lamming’s Season of Adventure. The world of the immigrant is explored in Chapter Three. Austin Clarke’s The Meeting Point is set in Canada while Selvon’s The Lonely Londoners and Salkey’s The Adventures of Catullus Kelly are set in England. In these novels, the characters are cut adrift of any moorings and their rootlessness exacerbated in an even more alien environment in which they are totally disoriented. The Afro/Asian/European search for origins in the ancestral homeland and the chasm that separates the West Indian from his origins form the subject of Chapter Four. Naipaul’s Area of Darkness, Dennis Williams’ Other Leopards, and Jean Rhys’ Wide Sargasso Sea and Voyage In The Dark demonstrate the impossibility of return, and the irreconcilability of the two worlds and the sensibilities born of them.
Longitudinal leading-twist distribution amplitude of the $^1P_1$-state $b_1(1235)$ meson and its implications on $B\to b_1(1235)\ell^+ν_\ell$ decays
Creators: name: Zeng, Long
name: Wu, Xing-Gang
name: Hu, Dan-Dan
name: Fu, Hai-Bing
name: Zhong, Tao
Publisher: name: arXiv
Year: 2025
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the paper, we derive the $ξ$-moments $\langleξ_{2;b_1}^{n;\|}\rangle$ of the longitudinal leading-twist distribution amplitude $ϕ_{2;b_1}^{\|}$ for $^1P_1$-state $b_1(1235)$-meson by using the QCD sum rules under the background field theory. Considering the contributions from the vacuum condensates up to dimension-six, its first two non-zero $ξ$-moments at the scale 1 GeV are $\langleξ_{2;b_1}^{1;\|}\rangle= -0.647^{+0.118}_{-0.113}$ and $\langleξ_{2;b_1}^{3;\|}\rangle = -0.328^{+0.055}_{-0.052}$, respectively. Using those moments, we then fix the Gegenbauer expansion series of $ϕ_{2;b_1}^{\|}$ and apply it to calculate $B\to b_1(1235)$ transition form factors (TFFs) that are derived by using the QCD light-cone sum rules. Those TFFs are then extrapolated to the physically allowable $q^2$-range via the simplified series expansion. As for the branching fractions, we obtain ${\cal B}(\bar B^0 \to b_1^+(1235)e^- \barν_e) = 2.179^{+0.553}_{-0.422}\times 10^{-4}$, ${\cal B}(B^0 \to b_1^-(1235)μ^+ν_μ) = 2.166^{+0.544}_{-0.415}\times 10^{-4}$, ${\cal B}(B^+ \to b_1^0(1235)e^+ν_e) = 2.353^{+0.597}_{-0.456}\times 10^{-4}$, and ${\cal B}(B^+ \to b_1^0(1235)μ^+ν_μ) = 2.339^{+0.587}_{-0.448}\times 10^{-4}$, respectively.
description: 11 pages, 5 figures, comments welcome
Complementary Experimental Methods to Obtain Thermodynamic Parameters of Protein Ligand Systems
Creators: name: Mohanakumar, Shilpa
name: Lee, Namkyu
name: Wiegand, Simone
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: 15th International Meeting on Thermodiffusion, IMT15, Tarragona, Spain, 29 May 2023 - 1 Jun 2023
Żywotność leksyki osmańskiej w polszczyźnie
Creators: name: Stachowski, Kamil
Publisher: name: figshare
Year: 2021
Subjects: subject: Linguistics
subject: FOS: Languages and literature
subject: 200406 Language in Time and Space (incl. Historical Linguistics, Dialectology)
subject: 200408 Linguistic Structures (incl. Grammar, Phonology, Lexicon, Semantics)

description: The Vitality of Turkish Words in Polish. The paper follows the usage of 777 Turkish words in corpora of Polish texts stretching from the 16th to the 21st century. It analyzes the chronology of their influx, semantic fields, semantic innovativeness, the literary genres in which they appear, their longevity, as well as the relations between these characteristics. As a side effect, the paper also contains a survey of historical corpora of Polish.
Жизненность тюркизмов в польском языке. Автор статьи прослеживает 777 тюркских слов, появляющихся в корпусах польских текстов на протяжении от XVI до XXI века, и анализирует хронологию заимствований, семантические поля и семантическую инновативность, литературные жанры текстов, содержащих тюркизмы и, одновременно взаимоотношения между этими свойствами слов. Дополнительно в статье дается также обзор исторических корпусов польского языка.
Rediscovering the celestial cuneiform puns that imparted the "birth of Pegasus" myth
Creators: name: Mchugh John
Publisher: name: Archaeoastronomy and Ancient Technologies
Year: 2017
Subjects: CELESTIAL
MYTHOLOGY
CONSTELLATION
HEAVENLY
WRITING
LUMASHI
PUNS
WORDPLAY

description: In a recent article the author has shown that Pegasus' appearance in Greek astronomy as a Flying Horse severed at the navel displays a one-to-one correlation with wordplay encrypted in its older, Mesopotamian title as the "Field". The current article expands on this idea, demonstrating that additional wordplay encrypted in the cuneiform terms for the Mesopotamian "Field" constellation embodied in the Pegasus Square and an adjacent star-figure imparted the words: "Medusa ('Ruling'), Perseus, cut-off, her, skull, leaped-forth, Chrysaor ('Golden-Sword'), the horse, named, Pegasus ('Springs'), because, he-was-born, near, the springs, of, the god, Ocean", words which mirror the creation story of Pegasus in Theogony lines 280-282. Additional puns expose the celestial identity of the Greek god Ocean, while simultaneously disclosing why he was incongruously identified as a "River" in Greek mythology. Cuneiform literature confirms that the Mesopotamian astronomer was a "writer" whose overarching precept held that the constellations comprised a sacred "text" that imparted inviolable wisdom through the medium of wordplay. Archaeological and textual data insinuates that this Mesopotamian celestial conviction was transmitted directly into the Hellenic cultural sphere in the eight century BC. And circumstantial evidence implies that the first author to mention Pegasus, Hesiod, was directly or indirectly familiar with this Mesopotamian astronomical arcana prior to writing Theogony. The author's conclusion argues that the aforementioned Mesopotamian celestial esoterica allowed Hesiod, or someone collaborating with him, to decipher the strand of puns that explained Pegasus' mythical "Birth" story, which he then rendered into Greek as lines 280-282 of Theogony.
Evidence for time-reversal symmetry breaking in the non-centrosymmetric superconductor LaNiC$_2$
Creators: name: Hillier, A. D.
name: Quintanilla, J.
name: Cywinski, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The results from muon spin relaxation experiments on the non-centrosymmetric intermetallic superconductor LaNiC$_2$ are reported. We find that the onset of superconductivity coincides with the appearance of spontaneous magnetic fields, implying that in the superconducting state time reversal symmetry is broken. An analysis of the possible pairing symmetries suggests only four triplet states compatible with this observation, all of which are non-unitary. They include the intriguing possibility of triplet pairing with the full point group symmetry of the crystal, which is only possible in a non-centrosymmetric superconductor.
description: 4+ pages, 2 tables, 4 figures
Multiple self-locking in the Kuramoto--Sakaguchi system with delay
Creators: name: Wolfrum, Matthias
name: Yanchuk, Serhiy
name: D'Huys, Otti
Publisher: name: Weierstrass Institute
Year: 2021
Subjects: subject: Synchronization
subject: large delay
subject: modulational instability
subject: 34K18
subject: 34K24
subject: 34K26

description: We study the Kuramoto-Sakaguchi system of phase oscillators with a delayed mean-field coupling. By applying the theory of large delay to the corresponding Ott--Antonsen equation, we explain fully analytically the mechanisms for the appearance of multiple coexisting partially locked states. Closely above the onset of synchronization, these states emerge in the Eckhaus scenario: with increasing coupling, more and more partially locked states appear unstable from the incoherent state, and gain stability for larger coupling at a modulational stability boundary. The partially locked states with strongly detuned frequencies are shown to emerge subcritical and gain stability only after a fold and a series of Hopf bifurcations. We also discuss the role of the Sakaguchi phase lag parameter. For small delays, it determines, together with the delay time, the attraction or repulsion to the central frequency, which leads to supercritical or subcritical behavior, respectively. For large delay, the Sakaguchi parameter does not influence the global dynamical scenario.
Synthesis and evaluation of novel anti-trypanosomal compounds, diversity-oriented synthesis of spirocyclic [beta]-phenethylamines, and the total synthesis of exotines A and B
Creators: name: Lepovitz, Lance Thomas
Publisher: name: The University of Texas at Austin
Year: 2019
Subjects: Organic synthesis
Diversity-oriented synthesis

description: First, collections of conformationally flexible 𝛿-lactam and piperidine analogs were designed and synthesized following the discovery of a rigid indoloquinolizidine scaffold whose derivatives inhibit the growth of Trypanosoma brucei¸ the protozoan parasite that causes human African trypanosomiasis, via the inhibition of methionyl-tRNA synthetase (TbMetRS). Many of 𝛿-lactam and piperidine analogs were found to be superior T. brucei growth inhibitors relative to the initial indoloquinolizidine compounds; however, it was also found that these flexible compound sets displayed greatly diminished activity against TbMetRS. Then, a diversity-oriented synthesis (DOS) of spirocyclic β-phenethylamines was realized via the development of an intramolecular aza-Hosomi-Sakurai reaction. Facile elaboration of these aza-spirocyclic scaffolds was demonstrated through a variety of means, and several derivatives were identified as potent Sigma-1 receptor (σ1R) ligands in a biochemical screen. Finally, a one-step biomimetic total synthesis of the cyclohepta[b]indole-coumarin natural products exotines A and B was achieved via the development of an acid-catalyzed three-component cyclization reaction between indole, prenal, and trans-dehydoosthol. Some mechanistic aspects of this process are investigated, and evidence is obtained which supports the mechanism of a [4 + 2] cycloaddition followed by a 1,2-migration, in accordance with the original biosynthetic proposal of Jiang.
Gas-dynamic shock heating of post-flare loops due to retraction following localized, impulsive reconnection
Creators: name: Longcope, D. W.
name: Guidoni, S. E.
name: Linton, M. G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a novel model in which shortening of a magnetic flux tube following localized, three-dimensional reconnection generates strong gas-dynamic shocks around its apex. The shortening releases magnetic energy by progressing away from the reconnection site at the Alfven speed. This launches inward flows along the field lines whose collision creates a pair of gas-dynamic shocks. The shocks raise both the mass density and temperature inside the newly shortened flux tube. Reconnecting field lines whose initial directions differ by more that 100 degrees can produce a concentrated knot of plasma hotter that 20 MK, consistent with observations. In spite of these high temperatures, the shocks convert less than 10% of the liberated magnetic energy into heat - the rest remains as kinetic energy of bulk motion. These gas-dynamic shocks arise only when the reconnection is impulsive and localized in all three dimensions; they are distinct from the slow magnetosonic shocks of the Petschek steady-state reconnection model.
Precision Spectroscopy of Antiprotonic Atoms for Investigation of Low-energy Antinucleon-nucleus Interactions
Creators: name: Higuchi, Takashi
name: Fujioka, Hiroyuki
Publisher: name: arXiv
Year: 2025
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We propose a high-precision x-ray spectroscopy experiment of antiprotonic atoms to advance the understanding of low-energy antinucleon-nucleus interactions. The current leading model of antiproton-nucleus interactions is based on an optical potential with parameters derived from a global fit to antiprotonic atom x-ray data across the periodic table. However, the isovector parameter of this potential remains poorly constrained due to uncertainties in nucleon distributions of the nuclei. To address this, we propose to use calcium isotopes with well-studied nucleon distributions to minimize these uncertainties. A superconducting microcalorimeter detector will provide a resolution of 50-70 eV in the energy range of interest, allowing high precision determination of the isotope-dependent strong-interaction shifts and widths. The outcomes of the proposed experiment can be used to refine the model of antinucleon-nucleus interactions and provide critical data for future experiments searching for neutron-antineutron oscillations.
description: Contribution to EXA-LEAP2024 proceedings
Topological String on OSP(1|2)/U(1)
Creators: name: Giribet, Gaston
name: Hikida, Yasuaki
name: Takayanagi, Tadashi
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose an equivalence between topological string on OSP(1|2)/U(1) and \hat{c} \leq 1 superstring with N=1 world-sheet supersymmetry. We examine this by employing a free field representation of OSP(1|2) WZNW model and find an agreement on the spectrum. We also analyze this proposal at the level of scattering amplitudes by applying a map between correlation functions of OSP(1|2) WZNW model and those of N=1 Liouville theory.
description: 25 pages, refereces added
Entropy of group actions beyond uniform lattices
Creators: name: Hauser, Till
name: Schneider, Friedrich Martin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: Group Theory (math.GR)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 43A07, 22D40, 37A35, 37D35

description: Entropy of measure preserving or continuous actions of amenable discrete groups allows for various equivalent approaches. Among them are the ones given by the techniques developed by Ollagnier and Pinchon on the one hand and the Ornstein-Weiss lemma on the other. We extend these two approaches to the context of actions of amenable topological groups. In contrast to the discrete setting, our results reveal a remarkable difference between the two concepts of entropy in the realm of non-discrete groups: while the first quantity collapses to 0 in the non-discrete case, the second yields a well-behaved invariant for amenable unimodular groups. Concerning the latter, we moreover study the corresponding notion of topological pressure, prove a Goodwyn-type theorem, and establish the equivalence with the uniform lattice approach (for locally compact groups admitting a uniform lattice). Our study elaborates on a version of the Ornstein-Weiss lemma due to Gromov.
The lattice infrared Landau gauge gluon propagator: the infinite volume limit
Creators: name: Oliveira, O.
name: Silva, P. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We report on the infrared behaviour of the lattice gluon propagator. The bounds on D(0) and their behaviour with the lattice volume are investigated, together with the full propagator. Moreover, a study of the gluon propagator using different lattice spacings is carried out.
description: 7 pages, 3 figures, talk presented at Lattice 2009 (Vacuum Structure and Confinement)
Geometric properties of disintegration of measures
Creators: name: Possobon, Renata
name: Rodrigues, Christian S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Probability (math.PR)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this paper, we study a connection between disintegration of measures and geometric properties of probability spaces. We prove a disintegration theorem, addressing disintegration from the perspective of an optimal transport problem. We look at the disintegration of transport plans, which are used to define and study disintegration maps. Using these objects, we study the regularity and absolute continuity of disintegration of measures. In particular, we exhibit conditions for which the disintegration map is weakly continuous and one can obtain a path of measures given by this map. We show a rigidity condition for the disintegration of measures to be given into absolutely continuous measures.
description: 34 pages, 5 figures. Accepted in Ergodic Theory and Dynamical Systems. doi:10.1017/etds.2024.74
Magnolia mayae A. Vazquez & Farrera.
Creators: name: Vázquez-García, J. Antonio
name: Véliz-Pérez, Mario Esteban
name: Tribouillier-Navas, Erick
name: Muñiz-Castro, Miguel A.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Magnoliales
Magnoliaceae
Magnolia
Magnolia mayae

description: Magnolia mayae A.Vázquez & Farrera. Botanical Sciences 90: 109–112, 2012. (Fig. 3). TYPE: — MÉXICO. Chiapas: Municipio Trinitaria, carretera Tziscao-las Nubes, 16 06 33.7N, 91 33 34.2W, 1079 m, 11/ 11/208 (fr), Martínez Meléndez 2480 (holotype HEM, isotypes MO, IBUG). Specimen examined:— GUATEMALA. Huehuetenango: Nentón, San José Nueva Frontera, Aldea, cafetal con sombra, bosque cercano y al E de la Aldea, 16°03'50"N, 91°01'03"W, 960 m, 10 dic 2006, Soto 1502 (MO, USCG). Magnolia mayae, with dorsal dehiscence and non-evident stipular scar on the petiole, belongs to Magnolia section Magnolia; it is only known from Chiapas, México, and Huehuetenenago, Guatemala. It grows in moist forests, locally isolated in Chiapas, and abundant in Huehuetenengo; it should be looked for in other neighboring areas of Guatemala.
description: Published as part of Vázquez-García, J. Antonio, Véliz-Pérez, Mario Esteban, Tribouillier-Navas, Erick & Muñiz-Castro, Miguel A., 2013, Magnolia quetzal and Magnolia mayae, a new species and a new record, respectively, for the flora of Guatemala, pp. 1-6 in Phytotaxa 76 (1) on page 5, DOI: 10.11646/phytotaxa.76.1.1, http://zenodo.org/record/4814917
An Estimate of the Primordial Non-Gaussianity Parameter f_NL Using the Needlet Bispectrum from WMAP
Creators: name: Rudjord, Oystein
name: Hansen, Frode K.
name: Lan, Xiaohong
name: Liguori, Michele
name: Marinucci, Domenico
name: Matarrese, Sabino
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use the full bispectrum of spherical needlets applied to the WMAP data of the cosmic microwave background as an estimator for the primordial non-Gaussianity parameter f_NL. We use needlet scales up to l_max=1000 and the KQ75 galactic cut and find f_NL=84 +/- 40 corrected for point source bias. We also introduce a set of consistency tests to validate our results against the possible influence of foreground residuals or systematic errors. In particular, fluctuations in the value of f_NL obtained from different frequency channels, different masks and different multipoles are tested against simulated maps. All variations in f_NL estimates are found statistically consistent with simulations.
description: 9 pages, 2 figures
Magnetic properties of the zigzag ladder compound SrTb2O4
Creators: name: Orlandi, F.
name: Hatnean, M. Ciomaga
name: Mayoh, D. A.
name: Tidey, J. P.
name: Riberolles, S. X. M.
name: Balakrishnan, G.
name: Manuel, P.
name: Khalyavin, D. D.
name: Walker, H. C.
name: Le, M. D.
name: Ouladdiaf, B.
name: Wildes, A. R.
name: Qureshi, N.
name: Petrenko, O. A.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on the properties of SrTb2O4, a frustrated zigzag ladder antiferromagnet, studied by single crystal neutron diffraction (with polarised neutrons in zero field and unpolarised neutrons in an applied magnetic field), as well as by neutron spectroscopy on a polycrystalline sample. The neutron scattering results are supported by single crystal magnetisation and heat capacity measurements. In zero field, neutron diffraction data show no transition to a magnetically ordered state down to the lowest experimentally available temperature of 35 mK, and the material remains magnetically disordered down to this temperature. Polarised neutron diffraction measurements reveal the presence of a diffuse scattering signal suggesting only very weak spin-spin correlations in the ground state. For H // c (the easy magnetisation direction), we followed the magnetisation process using neutron diffraction measurements and observed the appearance of field-induced magnetic Bragg peaks with integer h and k indices in the (hk0) scattering plane. No magnetic peaks with a non-zero propagation vector were detected. The observed in-field data fit well to a simple two-sublattice model with magnetic moments aligned along the field direction but being significantly different in magnitude for the two inequivalent Tb3+ sites in the unit cell. Overall, the collected data point to a nonmagnetic ground state in SrTb2O4 despite the presence of strong interactions.
description: 13 pages, 11 figures
Timescales for Low-Mass Star Formation in Extragalactic Environments: Implications for the Stellar IMF
Creators: name: Banerji, Manda
name: Viti, Serena
name: Williams, David A.
name: Rawlings, Jonathan M. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the physical and chemical conditions necessary for low-mass star formation in extragalactic environments by calculating various characteristic timescales associated with star formation for a range of initial conditions. The balance of these timescales indicates whether low-mass star formation is enhanced or inhibited under certain physical conditions. In this study, we consider timescales for free-fall, cooling, freeze-out, desorption, chemistry and ambipolar diffusion and their variations with changes in the gas density, metallicity, cosmic ray ionisation rate and FUV radiation field strength. We find that extragalactic systems with high FUV radiation field strengths and high cosmic ray fluxes considered at a range of metallicities, are likely to have enhanced low-mass star formation unless the magnetic pressure is sufficient to halt collapse. Our results indicate that this is only likely to be the case for high-redshift galaxies approaching solar metallicities. Unless this is true for all high-redshift sources, this study finds little evidence for a high-mass biased IMF at high redshifts.
description: 22 pages, 4 figures, Accepted for Publication in ApJ
Fresh and Hardened Properties of palm oil fuel ash (POFA) based.pdf
Creators: name: Islam, Mohammad Momeen Ul
Publisher: name: figshare
Year: 2021
Subjects: subject: 90503 Construction Materials
subject: FOS: Civil engineering
subject: 90599 Civil Engineering not elsewhere classified
subject: 90506 Structural Engineering

description: The efficacy of two palm oil industrial waste materials, namely palm oil fuel ash (POFA) and oil palm shell (OPS), as partial and whole replacement materials, respectively, for ordinary Portland cement (OPC) and conventional crushed granite aggregate on fresh and hardened concrete properties has been investigated and reported. OPC was partially replaced with POFA by weight proportion of 0%, 10%, 30%, and 50% cementitious material. The fresh concrete and hardened concrete properties of the sustainable concrete developed through this research were investigated through slump test, saturated surface dry density, ultrasonic pulse velocity, and cube compressive strength test. In addition, the efficiency factor was also calculated and reported. The slump test results of different concrete mixes show low slump values between 25 and 40 mm, and this is attributed to high loss on ignition of POFA. The saturated surface dry density was found in the range of 1941 to 2001 kg/m3 for 0-50% replacement of ordinary Portland cement (OPC) by Palm oil fuel ash (POFA) and hence could be categorized as lightweight concrete. Thus, the usefulness of POFA as partial cement replacement material in lightweight concrete with OPS as a whole replacement for conventional aggregate is feasible.
Perda de vegetação e Políticas Públicas: Estudo de uma Área de Assentamento de Reforma Agrária na Amazônia Meridional.
Creators: name: Brito De Lima, Rogério
name: De Lima, Sabrina Miranda Borges Da Silva Brito
name: Calvi, Miqueias Freitas
name: De Morais, Vinicius Augusto
Publisher: name: Revista de Ciências Agrárias
Year: 2020

description: Como famílias beneficiárias da reforma agrária, alocadas em um novo projeto de assentamento, enfrentam dificuldades de subsistência. Apesar de sua importância social e econômica, a criação de assentamentos tem um ponto de discussão tornado, como um dos maiores responsáveis ​​pelo desmatamento da Amazônia. Uma pesquisa objetiva quantificar e avaliar o desmatamento no Projeto de Declaração de São Pedro, município do Paraná, Estado de Mato Grosso, sem intervalo de 22 anos, para entender até que ponto a política de reforma agrícola está sendo testada com desmatamento. O estudo da evolução do desmatamento baseou-se em análises comparativas a partir de mapas temáticos dos anos de 1997 a 2018, elaborados por meio do sensoriamento remoto.No ano de criação, uma área foi criada em 91,51% de vegetação e apenas 8,49% de áreas desmatadas. Já em 2018, uma situação é inversa, 82,73% da área total é desmatada ou equivalente a 28.869,58 ha, com uma média de 1.312,25 ha / ano. Os maiores índices de desmatamento foram apresentados nos anos de liberação e aplicativos dos recursos do Pronaf, permitindo que a perda ou a insuficiência de medidas da política agrícola nacional, sejam permitidas nas famílias assentadas, exerçam reflexos diretos nos índices de desmatamento.
description: Revista de Ciências Agrárias, vol. 43 n.º 2 (2020)
คุณภาพการคัดแยกประเภทผู้ป่วยฉุกเฉิน โรงพยาบาลนาดูน อำเภอนาดูน จังหวัดมหาสารคาม
Creators: name: สหัศถญา สุขจำนงค์
Publisher: name: สถาบันการแพทย์ฉุกเฉินแห่งชาติ
Year: 2564
Subjects: คุณภาพ
การคัดแยก
ประเภทผู้ป่วย

description: ๋Journal of Emergency Medical Services of Thailand, 1, 2, 123-133
Performance of soybean cultivars in alternative substrates to the germination test with treated seeds
Creators: name: Dias Tunes, Carla
name: Meneguzzo, Michele Renata Revers
name: Silva, Jacqueline Barcelos Da
name: Gonçalves, Vanessa Pinto
name: Pieper, Marjana Shellin
name: Camargo, Thais Ongaratto De
name: Meneghello, Géri Eduardo
Publisher: name: Revista de Ciências Agrárias
Year: 2020

description: The aim of this study was to evaluate the physiological performance of seeds treated with chemical products in the standard substrates indicated by the Rules for Seed Analysis and substrates classified as alternatives, considering the use of different soybean cultivars. For this purpose, seeds of different cultivars treated with fungicides and/or insecticides were used, sown on standard and alternative substrates. The study was carried out in a completely randomized design in a bifactorial scheme, with four replications. The variables first count, abnormal seedlings and germination were evaluated. Elite IPRO and 2606 IPRO cultivars presented interaction of the factors with inferior results regarding the physiological quality of seeds treated with imidacloprid+thiodicarb, whereas 7161 RR, also with significant interaction, slightly varied between treatments. 6410 IPRO, 7062 IPRO and 15630 IPRO showed evidence of a negative relationship in the presence of the active ingredient imidacloprid with the use of sand substrate standing out positively compared to paper. The cultivar 7209 IPRO was the most stable, without significant interaction, but with better results for untreated and thiamethoxam treated seeds, as well as for the sand substrate. Differences between cultivars and negative effects of imidacloprid-containing products can be observed, mainly in the paper substrate.
description: Revista de Ciências Agrárias, vol. 43 n.º 2 (2020)