cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Geomorphological Evidence of Localized Stagnant Ice Deposits in Terra Cimmeria, Mars
Creators: name: Adeli, Solmaz
name: Hauber, Ernst
name: Michael, Gregory G.
name: Fawdon, Peter
name: Smith, Isaac B.
name: Jaumann, Ralf
Publisher: name: Freie Universität Berlin
Year: 2019
Subjects: subject: Mars
subject: Amazonian
subject: debris‐covered ice deposit
subject: impact into subsurface ice
subject: midlatitudes
subject: obliquity
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie

description: The presence of snow and ice at midlatitudes of Mars cannot be explained by current climatic conditions, as surface ice is unstable. However, a large variety of debris‐covered glaciers have been observed at both midlatitudes. Here, we report the presence of local, small‐scale, and debris‐covered stagnant ice deposits on the floor of a valley system in Terra Cimmeria. These deposits, termed valley fill deposits (VFD), have a distribution that is restricted to the host valley floor and to the extent of the ejecta blanket associated with Tarq impact crater. The VFD are characterized by convex‐upward morphology, various crevasses, sublimation pits, an average area of a few square kilometers, and occasional ejecta streaks on their surface. Our model age estimation points to two possible time frames for the Tarq impact event; thus, we suggest two formation scenarios for VFD: (I) distribution of ice due to impact into shallow ice during the Middle Amazonian and (II) post‐impact deposition of VFD due to precipitation. In both scenarios, ice preservation is most likely due to a lag of dust and debris deposited in the valley's topographic lows. Scenario I is more consistent with our geomorphological observation of the VFD being overlain by ejecta streaks. Our results highlight the importance of local geological events and conditions in the distribution and preservation of buried ice deposits on Mars and suggest that more small‐scale and debris‐covered ice deposits may exist in the midlatitudes than previously thought. These deposits are of high importance for future human exploration missions to Mars.
Photoinduced hole transfer from tris(bipyridine)ruthenium dye to a high-valent iron-based water oxidation catalyst
Creators: name: Shylin, Sergii I.
name: Pavliuk, Mariia V.
name: D’Amario, Luca
name: Fritsky, Igor O.
name: Berggren, Gustav
Publisher: name: Freie Universität Berlin
Year: 2019
Subjects: subject: solar energy
subject: spectroscopy
subject: water oxidation system
subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik

description: An efficient water oxidation system is a prerequisite for developing solar energy conversion devices. Using advanced time-resolved spectroscopy, we study the initial catalytic relevant electron transfer events in the light-driven water oxidation system utilizing [Ru(bpy)3]2+ (bpy = 2,2′-bipyridine) as a light harvester, persulfate as a sacrificial electron acceptor, and a high-valent iron clathrochelate complex as a catalyst. Upon irradiation by visible light, the excited state of the ruthenium dye is quenched by persulfate to afford a [Ru(bpy)3]3+/SO4˙− pair, showing a cage escape yield up to 75%. This is followed by the subsequent fast hole transfer from [Ru(bpy)3]3+ to the FeIV catalyst to give the long-lived FeV intermediate in aqueous solution. In the presence of excess photosensitizer, this process exhibits pseudo-first order kinetics with respect to the catalyst with a rate constant of 3.2(1) × 1010 s−1. Consequently, efficient hole scavenging activity of the high-valent iron complex is proposed to explain its high catalytic performance for water oxidation.
The impact of magnetic fields on the IMF in star-forming clouds near a supermassive black hole
Creators: name: Hocuk, S.
name: Schleicher, D. R. G.
name: Spaans, M.
name: Cazaux, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Star formation in the centers of galaxies is thought to yield massive stars with a possibly top-heavy stellar mass distribution. It is likely that magnetic fields play a crucial role in the distribution of stellar masses inside star-forming molecular clouds. In this context, we explore the effects of magnetic fields, with a typical field strength of 38 microG, such as in RCW 38, and a field strength of 135 microG, similar to NGC 2024 and the infrared dark cloud G28.34+0.06, on the initial mass function (IMF) near (< 10 pc) a 10^7 solar mass black hole. Using these conditions, we perform a series of numerical simulations with the hydrodynamical code FLASH to elucidate the impact of magnetic fields on the IMF and the star-formation efficiency (SFE) emerging from an 800 solar mass cloud. We find that the collapse of a gravitationally unstable molecular cloud is slowed down with increasing magnetic field strength and that stars form along the field lines. The total number of stars formed during the simulations increases by a factor of 1.5-2 with magnetic fields. The main component of the IMF has a lognormal shape, with its peak shifted to sub-solar (< 0.3 M_sun) masses in the presence of magnetic fields, due to a decrease in the accretion rates from the gas reservoir. In addition, we see a top-heavy, nearly flat IMF above ~2 solar masses, from regions that were supported by magnetic pressure until high masses are reached. We also consider the effects of X-ray irradiation if the central black hole is active. X-ray feedback inhibits the formation of sub-solar masses and decreases the SFEs even further. Thus, the second contribution is no longer visible. We conclude that magnetic fields potentially change the SFE and the IMF both in active and inactive galaxies, and need to be taken into account in such calculations.
description: 10 pages, 10 figures. Accepted for publication in Astronomy and Astrophysics. 2 more references added
Processes determining heat waves across different European climates
Creators: name: Zschenderlein, Philipp
name: Fink, Andreas H.
name: Pfahl, Stephan
name: Wernli, Heini
Publisher: name: Freie Universität Berlin
Year: 2019
Subjects: subject: adiabatic warming
subject: climatology
subject: diabatic processes
subject: Eulerian perspective
subject: heat waves
subject: Lagrangian perspective
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie

description: This study presents a comprehensive analysis of processes determining heat waves across different climates in Europe for the period 1979–2016. Heat waves are defined using a percentile‐based index and the main processes quantified along trajectories are adiabatic compression by subsidence and local and remote diabatic processes in the upper and lower troposphere. This Lagrangian analysis is complemented by an Eulerian calculation of horizontal temperature advection. During typical summers in Europe, one or two heat waves occur, with an average duration of five days. Whereas high near‐surface temperatures over Scandinavia are accompanied by omega‐like blocking structures at 500 hPa, heat waves over the Mediterranean are connected to comparably flat ridges. Tracing air masses backwards from the heat waves, we identify three trajectory clusters with coherent thermodynamic characteristics, vertical motions, and geographic origins. In all regions, horizontal temperature advection is almost negligible. In two of the three clusters, subsidence in the free atmosphere is very important in establishing high temperatures near the surface, while the air masses in the third cluster are warmed primarily due to diabatic heating near the surface. Large interregional differences occur between the British Isles and western Russia. Over the latter region, near‐surface transport and diabatic heating appear to be very important in determining the intensity of the heat waves, whereas subsidence and adiabatic warming are of first‐order importance for the British Isles. Although the large‐scale pattern is quasistationary during heat wave days, new air masses are entrained steadily into the lower troposphere during the life cycle of a heat wave. Overall, the results of the present study provide a guideline as to which processes and diagnostics weather and climate studies should focus on to understand the severity of heat waves.
The Hintermann-Merlini-Baxter-Wu and the Infinite-Coupling-Limit Ashkin-Teller Models
Creators: name: Huang, Yuan
name: Deng, Youjin
name: Jacobsen, Jesper Lykke
name: Salas, Jesus
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We show how the Hintermann-Merlini-Baxter-Wu model (which is a generalization of the well-known Baxter-Wu model to a general Eulerian triangulation) can be mapped onto a particular infinite-coupling-limit of the Ashkin-Teller model. We work out some mappings among these models, also including the standard and mixed Ashkin-Teller models. Finally, we compute the phase diagram of the infinite-coupling-limit Ashkin-Teller model on the square, triangular, hexagonal, and kagome lattices.
description: 58 pages (LaTeX2e). Includes tex file, three sty files, and 6 Postscript figures. Minor changes from v1. Final version accepted for publication
A mini-review on decorating, templating of commercial and electrospinning of new porous carbon electrodes for vanadium redox flow batteries
Creators: name: Schnucklake, Maike
name: Cheng, Ming
name: Maleki, Mahboubeh
name: Roth, Christina
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: carbon-carbon composites
subject: electrospinning
subject: metal decoration
subject: redox flow battery
subject: porous electrode
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: Carbon-based materials have become indispensable in the field of electrochemical applications, especially for energy storage or conversion purposes. A large diversity of materials has been proposed and investigated in the last years. In this mini-review, we present recent advances in the design of carbon-based materials for application in vanadium redox flow batteries. As main part, different modification and fabrication methods for carbon-based electrodes are described. The decoration of carbon felts and graphite felts with metals or metal compounds to enhance mostly the electrocatalysis of the negative side is illustrated with examples. Furthermore, various options of synthesizing porous C-C composites are discussed, with specific emphasis on graphene-based composites as well as nitrogen doped composites and biomass-derived carbons. Apart from that the method of electrospinning is also examined in detail, a method which not only allows the production of nanofibrous high surface area electrodes, but also allows adaptation of fiber thickness and architecture. In this review the significant strengths of each method are pointed out, but also particular weaknesses are discussed with respect to the later battery performance. Finally, an outlook is given pointing to the remaining challenges that need to be overcome in the future.
title: Invisible Kingship
title: Liminality and the Maiden King in Nítíða Saga
titleType: Subtitle
Creators: name: Murath, Antonia
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: literature and literary studies
subject: bridal-quest romance
subject: Riddarasogur
subject: Lygisogur
subject: gender
subject: meykongur
subject: thing theory
subject: new materialism
subject: 800 Literatur::830 Deutsche und verwandte Literaturen::839 Andere germanische Literaturen

description: Like all maiden kings, Nitioa initially rejects her suitors only to accept marriage eventually. Rather than accepting the saga's 'happy ending' as its heroine's choice, this article argues that her kingship is cast as liminal in Victor Turner's sense. Her character reflects liminal traits: visual, temporal and sexual ambiguity, mediated through the motif of invisibility, body-thing relations and notions of space. Nitioa's kingship is structured as a transition to the role of a queen, which she does not take on voluntarily, but because she lacks choice in the face of her increasingly fragile power. Her suitor Livorius ultimately succeeds neither by trickery, military power, nor a courtly approach, but by employing structures Nitioa is excluded from due to her sex. Spared physical violence, she nonetheless suffers structural violence coercing her into a norm-appropriate role and erasing her kingship.
Mass Deformed L-BLG Theory From ABJ Theory
Creators: name: Dey, Tanay K.
name: Panigrahi, Kamal L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct mass deformed SU(N) L-BLG theory together with $U(M-N)_k$ Chern-Simons theory. This mass deformed L-BLG theory is a low energy world volume theory of a stack of $N$ number of M2-brane far away from $C^4/Z_k$ singularity. We carry out this by defining a special scaling limit of the fields of this theory and simultaneously sending the Chern-Simons level to infinity.
description: 19 pages, to appear in Phys. Rev. D
The Constrained NMSSM with a 126 GeV Higgs boson: A global analysis
Creators: name: Kowalska, Kamila
name: Munir, Shoaib
name: Roszkowski, Leszek
name: Sessolo, Enrico Maria
name: Trojanowski, Sebastian
name: Tsai, Yue-Lin Sming
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present the first global analysis of the Constrained NMSSM that investigates the impact of the recent discovery of a 126 GeV Higgs-like boson, of the observation of a signal for BR(B_s->μ^+μ^-), and of constraints on supersymmetry from ~5/fb of data accumulated at the LHC, as well as of other relevant constraints from colliders, flavor physics and dark matter. We consider three possible cases, assuming in turn that the discovered Higgs boson is: i) the lightest Higgs boson of the model; ii) the next-to-lightest Higgs boson; and iii) a combination of both roughly degenerate in mass. The likelihood function for the Higgs signal uses signal rates in the γγ and ZZ --> 4l channels, while that for the Higgs exclusion limits assumes decay through the γγ, ττ, ZZ and W^+W^- channels. In all cases considered we identify the 68% and 95% credible posterior probability regions in a Bayesian approach. We find that, when the constraints are applied with their respective uncertainties, the first case shows strong CMSSM-like behavior, with the stau coannihilation region featuring highest posterior probability, the best-fit point, a correct mass of the lightest Higgs boson and the lighter stop mass in the ballpark of 1 TeV. The second and the third cases, on the other hand, while allowed are disfavored by the constraints from direct detection of dark matter and from BR(B_s->μ^+μ^-). Without the anomalous magnetic moment of the muon the fit improves considerably, especially for negative effective μ parameter. We discuss how the considered scenarios could be tested furtherly at the LHC and in dark matter searches.
description: 36 pages, 17 figures. Discussion of cases 2 and 3 with negative mu_eff extended. Version published in PRD
Decision-theoretic justifications for Bayesian hypothesis testing using credible sets
Creators: name: Thulin, Måns
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: In Bayesian statistics the precise point-null hypothesis $θ=θ_0$ can be tested by checking whether $θ_0$ is contained in a credible set. This permits testing of $θ=θ_0$ without having to put prior probabilities on the hypotheses. While such inversions of credible sets have a long history in Bayesian inference, they have been criticised for lacking decision-theoretic justification. We argue that these tests have many advantages over the standard Bayesian tests that use point-mass probabilities on the null hypothesis. We present a decision-theoretic justification for the inversion of central credible intervals, and in a special case HPD sets, by studying a three-decision problem with directional conclusions. Interpreting the loss function used in the justification, we discuss when test based on credible sets are applicable. We then give some justifications for using credible sets when testing composite hypotheses, showing that tests based on credible sets coincide with standard tests in this setting.
description: 11 pages, 2 figures
NEXUS: Tracing the Cosmic Web Connection
Creators: name: Cautun, Marius
name: van de Weygaert, Rien
name: Jones, Bernard J. T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We introduce the NEXUS algorithm for the identification of Cosmic Web environments: clusters, filaments, walls and voids. This is a multiscale and automatic morphological analysis tool that identifies all the cosmic structures in a scale free way, without preference for a certain size or shape. We develop the NEXUS method to incorporate the density, tidal field, velocity divergence and velocity shear as tracers of the Cosmic Web. We also present the NEXUS+ procedure which, taking advantage of a novel filtering of the density in logarithmic space, is very successful at identifying the filament and wall environments in a robust and natural way. To asses the algorithms we apply them to an N-body simulation. We find that all methods correctly identify the most prominent filaments and walls, while there are differences in the detection of the more tenuous structures. In general, the structures traced by the density and tidal fields are clumpier and more rugged than those present in the velocity divergence and velocity shear fields. We find that the NEXUS+ method captures much better the filamentary and wall networks and is successful in detecting even the fainter structures. We also confirm the efficiency of our methods by examining the dark matter particle and halo distributions.
description: 25 pages, 23 figures, accepted for publication in MNRAS
Generalized Scaling Ansatz and Minimal Seesaw Mechanism
Creators: name: Yasue, Masaki
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Generalized scaling in flavor neutrino masses $M_{ij}$ ($i,j$=$e,μ,τ$) expressed in terms of $θ_{SC}$ and the atmospheric neutrino mixing angle $θ_{23}$ is defined by $M_{iτ}/M_{iμ}$ = $- κ_it_{23}$ ($i$=$e,μ,τ$) with $κ_e$=1, $κ_μ$=B/A and $κ_τ$=1/B, where $t_{23}=\tanθ_{23}$, $A$=${\cos ^2}{θ_{SC}}+{\sin ^2}{θ_{SC}}t_{23}^4$ and B=${\cos ^2}{θ_{SC}}-{\sin ^2}{θ_{SC}}t_{23}^2$. The generalized scaling ansatz predicts the vanishing reactor neutrino mixing angle $θ_{13}=0$. It is shown that the minimal seesaw mechanism naturally implements our scaling ansatz. There are textures satisfying the generalized scaling ansatz that yield vanishing baryon asymmetry of the Universe (BAU). Focusing on these textures, we discuss effects of $θ_{13}\neq 0$ to evaluate a CP-violating Dirac phase $δ$ and BAU and find that BAU is approximately controlled by the factor $\sin^2θ_{13}\sin(2δ-ϕ)$, where $ϕ$ stands for the CP-violating Majorana phase whose magnitude turns out to be at most 0.1.
description: 12 pages, 9 figures, version to appear in Phys. Rev. D
Offloading de Dados de Veículos Autônomos por Meio de Redes Heterogêneas na Edge Computing
Creators: name: dos Santos, Mariese C
Publisher: name: Zenodo
Year: 2023

description: Veículos Autônomos conectados (CAV) possuem recursos de comunicação que tem como objetivo a segurança e eficiência. Os CAVs armazenam em seus caches vários tipos de dados, incluindo os gerados por radares, que são utilizados para auxiliar no Sistema de Transporte Inteligente. A comunicação do Veículo para Infraestrutura (V2I) é utilizada para realizar o offloading desses dados para RSU. Neste trabalho é proposta uma abordagem que tem como objetivo utilizar a Estação de Base (BS), que oferece heterogêneas redes de comunicação (DSRC, 5GmmWave e 6G), para realizar o offloading dos dados para edge computing da rede utilizada. A BS proporciona aos veículos maior tempo de conectividade, este tempo é que limita a capacidade máxima dos dados que podem ser transmitidos pelas redes. Para escolha dos dados de transmissão é utilizado o tamanho dos dados (Mb) e o deadline, para suavizar a transmissão. Além disso, devido as interferências sofridas pelas redes é calculada a capacidade de transmissão do canal para cada veículo, em cada instante do tempo. Essas informações são utilizadas como restrições em uma Programação Linear Inteira (PLI) (0-1), com o problema das múltiplas redes de comunicação, para otimizar a escolha da rede. Em que as redes 5GmmWave/6G só são utilizadas pelos dados de alta prioridade e os demais quando o deadline estão vencendo,  os outros utilizam a rede DSRC. Como resultado a abordagem proposta consegue transmitir dados mantendo a qualidade do serviço e menor custo.
Maximum Likelihood Duality for Determinantal Varieties
Creators: name: Draisma, Jan
name: Rodriguez, Jose
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14m12, 62f12

description: In a recent paper, Hauenstein, Sturmfels, and the second author discovered a conjectural bijection between critical points of the likelihood function on the complex variety of matrices of rank r and critical points on the complex variety of matrices of co-rank r-1. In this paper, we prove that conjecture for rectangular matrices and for symmetric matrices, as well as a variant for skew-symmetric matrices. To appear in International Mathematics Research Notices.
A possible role of tachykinin-related peptide on an immune system activity of mealworm beetle, Tenebrio molitor L.
Creators: name: Urbański, A.
name: Konopińska, N.
name: Lubawy, J.
name: Walkowiak-Nowicka, K.
name: Marciniak, P.
name: Rolff, Jens
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Tachykinins
subject: Neuropeptides
subject: Insect haemocytes
subject: Cellular response
subject: Phenoloxidase
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Tachykinin-related peptides (TRPs) are important neuropeptides. Here we show that they affect the insect immune system, especially the cellular response. We also identify and predict the sequence and structure of the tachykinin-related peptide receptor (TRPR) and confirm the presence of expression of gene encoding TRPR on Tenebrio molitor haemocytes. After application of the Tenmo-TRP-7 in T. molitor the number of circulating haemocytes increased and the number of haemocytes participating in phagocytosis of latex beads decreased in a dose- and time-dependent fashion. Also, Tenmo-TRP-7 affects the adhesion ability of haemocytes. Six hours after injection of TenmoTRP-7, a decrease of haemocyte surface area was observed under both tested Tenmo-TRP-7 concentrations (10-7 and 10-5 M). The opposite effect was reported 24 h after injection, which indicates that the influence of Tenmo-TRP-7 on modulation of haemocyte behaviour differs at different stages of stress response. Tenmo-TRP-7 application also resulted in increased phenoloxidase activity 6 and 24 h after injection. The assessment of DNA integrity of haemocytes showed that the injection of Tenmo-TRP-7 at 10-7 M led to a decrease in DNA damage compared to control individuals. This effect was only visible 6 h after Tenmo-TRP-7 application. After 24 h, Tenmo-TRP-7 injection increased DNA damage. We also confirmed the expression of immune-related genes in nervous tissue of T. molitor. Transcripts for genes encoding receptors participating in pathogen recognition processes and antimicrobial peptides were detected in T. molitor brain, retrocerebral complex and ventral nerve cord. These results may indicate a role of the insect nervous system in pathogen recognition and modulation of immune response similar to vertebrates. Taken together, our results support the notion that tachykinin-related peptides probably play an important role in the regulation of the insect immune system. Moreover, some resemblances with action of tachykininrelated peptides and substance P showed that insects can be potential model organisms for analysis of hormonal regulation of conserved innate immune mechanisms.
Efficient variational contraction of two-dimensional tensor networks with a non-trivial unit cell
Creators: name: Nietner, A.
name: Vanhecke, B.
name: Verstraete, F.
name: Eisert, J.
name: Vanderstraeten, L.
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: matrix renormalization-group
subject: statistical-mechanics
subject: exponential decay
subject: product states
subject: dimers
subject: lattice
subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik

description: Tensor network states provide an efficient class of states that faithfully capture strongly correlated quantum models and systems in classical statistical mechanics. While tensor networks can now be seen as becoming standard tools in the description of such complex many-body systems, close to optimal variational principles based on such states are less obvious to come by. In this work, we generalize a recently proposed variational uniform matrix product state algorithm for capturing one-dimensional quantum lattices in the thermodynamic limit, to the study of regular two-dimensional tensor networks with a non-trivial unit cell. A key property of the algorithm is a computational effort that scales linearly rather than exponentially in the size of the unit cell. We demonstrate the performance of our approach on the computation of the classical partition functions of the antiferromagnetic Ising model and interacting dimers on the square lattice, as well as of a quantum doped resonating valence bond state.
Solitons and Yukawa Couplings in Nearly Kahler Flux Compactifications
Creators: name: Dolan, Brian P.
name: Szabo, Richard J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study vacuum states and symmetric fermions in equivariant dimensional reduction of Yang-Mills-Dirac theory over the six-dimensional homogeneous space SU(3)/U(1)x U(1) endowed with a family of SU(3)-structures including a nearly Kahler structure. We derive the fixed tree-level scalar potentials of the induced Yang-Mills-Higgs theory, and compute the dynamically generated gauge and Higgs boson masses as functions of the metric moduli of the coset space. We find an integrable subsector of the Higgs field theory which is governed by a sine-Gordon type model whose topological soliton solutions are determined nonperturbatively by the gauge coupling and which tunnel between families of infinitely degenerate vacua. The reduction of the Dirac action for symmetric fermions yields exactly massless chiral fermions, containing subsectors which have fixed tree-level Yukawa interactions. We compute dynamical fermion mass matrices explicitly and compare them at differents points of the moduli space, some of which support consistent heterotic flux vacua.
description: 44 pages, 3 figures; v4: typos corrected, new Conclusions section added summarising main results; Final version to be published in Physical Review D
THE POLITICS OF RELIGION: LIBATION AND TRUCE IN EURIPIDES’ BACCHAE
Creators: name: Zerhoch, Sebastian
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: religion
subject: Euripides
subject: Bacchae
subject: 200 Religion::200 Religion::200 Religion

description: Euripides’ Bacchae is one of the most intensively studied Greek tragedies. Generations of scholars have explored the play from different perspectives and offered fascinating insights. But there are still aspects that have not received the attention they deserve. One such aspect is Euripides’ use of libation as a dramatic motif. Even though this motif relates directly to the question of the tragic conflict between Dionysus and Pentheus, it has never been discussed in detail and its dramatic impact has not been fully acknowledged.
Anisotropic Universe Models in f(T) Gravity
Creators: name: Rodrigues, M. E.
name: Houndjo, M. J. S.
name: Saez-Gomez, D.
name: Rahaman, F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the cosmological reconstruction in anisotropic universe for both homogeneous and inhomogeneous content of the universe. Special attention is attached to three interesting cases: Bianchi type-I, Bianchi type-III and Kantowski-Sachs models. The de Sitter, power-law and general exponential solutions are assumed for the scale factor in each spatial direction and the corresponding cosmological models are reconstructed. Moreover, for the general exponential solutions, from which the de Sitter and power-law solutions may be obtained, we obtain models which reproduce the early universe, assumed as the inflation, and the late time accelerated expanding universe. The models obtained for the late time universe are consistent with a known result in literature where a power-law type correction in T is added to a power-law type of f(T) for guaranteeing the avoidance of the Big Rip and the Big Freeze.
description: 16 pages, revtex4 format, version accepted for publication in Physical Review D
Corner contribution to percolation cluster numbers
Creators: name: Kovács, István A.
name: Iglói, Ferenc
name: Cardy, John
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the number of clusters in two-dimensional (2d) critical percolation, N_Gamma, which intersect a given subset of bonds, Gamma. In the simplest case, when Gamma is a simple closed curve, N_Gamma is related to the entanglement entropy of the critical diluted quantum Ising model, in which Gamma represents the boundary between the subsystem and the environment. Due to corners in Gamma there are universal logarithmic corrections to N_Gamma, which are calculated in the continuum limit through conformal invariance, making use of the Cardy-Peschel formula. The exact formulas are confirmed by large scale Monte Carlo simulations. These results are extended to anisotropic percolation where they confirm a result of discrete holomorphicity.
description: 7 pages, 9 figures
Europäische Reiseberichte des späten Mittelalters. Eine analytische Bibliographie, hg. von W. Paravicini. Teil 2: Französische Reiseberichte, bearbeitet von J. Wettlaufer in Zusammenarbeit mit J. Paviot, 1999
Creators: name: Richard, J.
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 27 Nr. 1 (2000)
A Direction Effect on Taste Predicates
Creators: name: Dinges, Alexander
name: Zakkou, Julia
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: judge-dependence
subject: epistemic modals
subject: disagreement
subject: relativism
subject: semantics
subject: context
subject: 100 Philosophie und Psychologie::190 Neuzeitliche westliche Philosophie::190 Neuzeitliche westliche Philosophie

description: The recent literature abounds with accounts of the semantics and pragmatics of so-called predicates of personal taste, i.e. predicates whose application is, in some sense or other, a subjective matter. Relativism and contextualism are the major types of theories. One crucial difference between these theories concerns how we should assess previous taste claims. Relativism predicts that we should assess them in the light of the taste standard governing the context of assessment. Contextualism predicts that we should assess them in the light of the taste standard governing the context of use. We show in a range of experiments that neither prediction is correct. People have no clear preferences either way and which taste standard they choose in evaluating a previous taste claim crucially depends on whether they start out with a favorable attitude towards the object in question and then come to have an unfavorable attitude or vice versa. We suggest an account of the data in terms of what we call hybrid relativism.
J. F. Böhmer, Regesta Imperii. I. Die Regesten des Kaiserreichs unter den Karolingern 751-918 (926/962). Bd. 3: Die Regesten des Regnum Italiae und der burgundischen Regna. Teil 2: Das Regnum Italiae in der Zeit der Thronkämpfe und Reichsteilungen 888 (850)-926, bearbeitet von H. Zielinski, 1998
Creators: name: Bougard, F.
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 28 Nr. 1 (2001)
A simple inert model solves the little hierarchy problem and provides a dark matter candidate
Creators: name: Bazzocchi, F.
name: Fabbrichesi, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss a minimal extension to the standard model in which two singlet scalar states that only interacts with the Higgs boson is added. Their masses and interaction strengths are fixed by the two requirements of canceling the one-loop quadratic corrections to the Higgs boson mass and providing a viable dark matter candidate. Direct detection of the lightest of these new states in nuclear scattering experiments is possible with a cross section within reach of future experiments.
description: Finite corrections included. Model modified. Conclusion unchanged
Phylogenetic diversity of two geographically overlapping lichens: isolation by distance, environment, or fragmentation?
Creators: name: Moncada, Bibiana
name: Mercado-Díaz, Joel A.
name: Magain, Nicolas
name: Hodkinson, Brendan P.
name: Smith, Clifford W.
name: Bungartz, Frank
name: Pérez-Pérez, Rosa-Emilia
name: Gumboski, Emerson
name: Sérusiaux, Emmanuël
name: Lücking, Robert
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Brazil
subject: drift
subject: Galapagos
subject: Mexico
subject: Puerto Rico
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Aim: Phylogenetic diversification is a precursor to speciation, but the underlying patterns and processes are not well-studied in lichens. Here we investigate what factors drive diversification in two tropical, morphologically similar macrolichens that occupy a similar range but differ in altitudinal and habitat preferences, testing for isolation by distance (IBD), environment (IBE), and fragmentation (IBF). Location: Neotropics, Hawaii, Macaronesia. Taxon: Sticta andina, S. scabrosa (Peltigeraceae). Methods: We analysed 395 specimens from 135 localities, using the fungal ITS barcoding marker to assess phylogenetic diversification, through maximum likelihood tree reconstruction, TCS haplotype networks, and Tajima's D. Mantel tests were employed to detect structure in genetic vs. geographic, environmental, and fragmentation distances. Habitat preferences were quantitatively assessed by statistical analysis of locality-based BIOclim variables. Results: Sticta andina exhibited high phenotypic variation and reticulate phylogenetic diversity across its range, whereas the phenotypically uniform S. scabrosa contained two main haplotypes, one unique to Hawaii. Sticta andina is restricted to well-preserved andine forests and paramos, naturally fragmented habitats due to disruptive topology, whereas S. scabrosa thrives in lowland to lower montane zones in exposed or disturbed microsites, representing a continuous habitat. Sticta scabrosa showed IBD only across its full range (separating the Hawaiian population) but not within continental Central and South America, there exhibiting a negative Tajima's D. Sticta andina did not exhibit IBD but IBE at continental level and IBF in the northern Andes. Main conclusions: Autecology, particularly preference for either low or high altitudes, indirectly drives phylogenetic diversification. Low diversification in the low altitude species, S. scabrosa, can be attributed to rapid expansion and effective gene flow across a more or less continuous niche due to disturbance tolerance. In contract, high diversification in the high altitude species, S. andina, can be explained by niche differentiation (IBE) and fragmentation (IBF) caused by the Andean uplift.
Systematic Structural Characterization of Chitooligosaccharides Enabled by Automated Glycan Assembly
Creators: name: Tyrikos-Ergas, Theodore
name: Bordoni, Vittorio
name: Fittolani, Giulio
name: Chaube, Manishkumar A.
name: Grafmüller, Andrea
name: Seeberger, Peter H.
name: Delbianco, Martina
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: carbohydrates
subject: chitin
subject: chitosan
subject: MD simulations
subject: structure-property correlations
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: Chitin, a polymer composed of beta(1-4)-linked N-acetyl-glucosamine monomers, and its partially deacetylated analogue chitosan, are abundant biopolymers with outstanding mechanical as well as elastic properties. Their degradation products, chitooligosaccharides (COS), can trigger the innate immune response in humans and plants. Both material and biological properties are dependent on polymer length, acetylation, as well as the pH. Without well-defined samples, a complete molecular description of these factors is still missing. Automated glycan assembly (AGA) enabled rapid access to synthetic well-defined COS. Chitin-cellulose hybrid oligomers were prepared as important tools for a systematic structural analysis. Intramolecular interactions, identified by molecular dynamics simulations and NMR analysis, underscore the importance of the chitosan amino group for the stabilization of specific geometries.
Quantum Transport Enhancement by Time-Reversal Symmetry Breaking
Creators: name: Zimboras, Zoltan
name: Faccin, Mauro
name: Kadar, Zoltan
name: Whitfield, James
name: Lanyon, Ben
name: Biamonte, Jacob
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Quantum mechanics still provides new unexpected effects when considering the transport of energy and information. Models of continuous time quantum walks, which implicitly use time-reversal symmetric Hamiltonians, have been intensely used to investigate the effectiveness of transport. Here we show how breaking time-reversal symmetry of the unitary dynamics in this model can enable directional control, enhancement, and suppression of quantum transport. Examples ranging from exciton transport to complex networks are presented. This opens new prospects for more efficient methods to transport energy and information.
description: 6+5 pages
Scalable Synthesis of Benzotriazoles via [3+2] Cycloaddition of Azides and Arynes in Flow
Creators: name: Kleoff, Merlin
name: Boeser, Lisa
name: Baranyi, Linda
name: Heretsch, Philipp
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Arynes
subject: Click chemistry
subject: Cycloaddition
subject: Flow chemistry
subject: Nitrogen heterocycles
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: A method for the metal-free synthesis of benzotriazoles in flow is reported. Using azides and in situ generated arynes, benzotriazoles are formed in a [3+2] cycloaddition within minutes. Employing different substitution patterns of the azide and aryne coupling partners, a modular access to benzotriazoles is provided. Thermal strain of hazardous azides and accumulation of reactive intermediates is minimized by short reaction times in flow, improving the safety profile of the process. The scalability of the reaction is demonstrated.
Phase Structure of Lattice N=4 Super Yang-Mills
Creators: name: Catterall, Simon
name: Damgaard, Poul H.
name: Degrand, Thomas
name: Galvez, Richard
name: Mehta, Dhagash
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We make a first study of the phase diagram of four-dimensional N=4 super Yang-Mills theory regulated on a space-time lattice. The lattice formulation we employ is both gauge invariant and retains at all lattice spacings one exactly preserved supersymmetry charge. Our numerical results are consistent with the existence of a single deconfined phase at all observed values of the bare coupling.
description: 29 pages, 11 figures. References added, minor edits to text
Testing Triggered Star Formation in Six H II Regions
Creators: name: Dirienzo, William J.
name: Indebetouw, Rémy
name: Brogan, Crystal
name: Cyganowski, Claudia J.
name: Churchwell, Edward B.
name: Friesen, Rachel K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigated six H II regions with infrared, bright rimmed bubble or cometary morphology, in search of quantitative evidence for triggered star formation, both collect and collapse and radiatively driven implosion. We identified and classified 458 Young Stellar Objects (YSOs) in and around the H II regions. YSOs were determined by fitting a collection of radiative transfer model spectral energy distributions (SEDs) to infrared photometry for a large sample of point sources. We determined areas where there exist enhanced populations of relatively unevolved YSOs on the bright rims of these regions, suggesting that star formation has been triggered there. We further investigated the physical properties of the regions by using radio continuum emission as a proxy for ionizing flux powering the H II regions, and 13CO (1-0) observations to measure masses and gravitational stability of molecular clumps. We used an analytical model of collect and collapse triggered star formation, as well as a simulation of radiatively driven implosion, and thus we compare the observed properties of the molecular gas with those predicted in the triggering scenarios. Notably, those regions in our sample that show evidence of cometary, or "blister," morphology are more likely to show evidence of triggering. Keywords: HII regions -- ISM: bubbles -- Stars: formation -- Stars: protostars
description: [v1] 58 pages, 14 figures, published in the Astronomical Journal; [v2] Title and minor typos corrected to match published version, and references updated
R. Breitman, Der Architekt der »Endlösung«: Himmler und die Vernichtung der europäischen Juden. Aus dem Englischen übersetzt von K. und H. Nicolai, 1996
Creators: name: Fabréguet, Michel
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 29 Nr. 3 (2002)
Um Guideline para Revisão Sistemática em Fóruns de Discussão
Creators: name: Felipe, Gomes
Publisher: name: Zenodo
Year: 2023

description: Apesar da popularidade de fóruns em pesquisas, principalmente o StackOverflow, a literatura carece de abordagens que guiem o processo de análise e revisão sistemática desse tipo de literatura. Isso se torna principalmente importante dado a quantidade massiva de dados que podem ser criados com consultas a esses conjuntos de dados. Dessa forma, esse trabalho se propõe a construir um guideline/abordagem que possa auxiliar pesquisadores na revisão sistemática de literatura cinza proveniente de fóruns de discussão em Engenharia de Software.
Generalized master equation for first-passage problems in partitioned spaces
Creators: name: Frömberg, Daniela
name: Höfling, Felix
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: first-passage problems
subject: heterogeneous diffusion
subject: intracellular transport
subject: diffusion-influenced reactions
subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik

description: Motivated by a range of biological applications related to the transport of molecules in cells, we present a modular framework to treat first-passage problems for diffusion in partitioned spaces. The spatial domains can differ with respect to their diffusivity, geometry, and dimensionality, but can also refer to transport modes alternating between diffusive, driven, or anomalous motion. The approach relies on a coarse-graining of the motion by dissecting the trajectories on domain boundaries or when the mode of transport changes, yielding a small set of states. The time evolution of the reduced model follows a generalized master equation (GME) for non-Markovian jump processes; the GME takes the form of a set of linear integro-differential equations in the occupation probabilities of the states and the corresponding probability fluxes. Further building blocks of the model are partial first-passage time (FPT) densities, which encode the transport behavior in each domain or state. After an outline of the general framework for multiple domains, the approach is exemplified and validated for a target search problem with two domains in one- and three-dimensional space, first by exactly reproducing known results for an artificially divided, homogeneous space, and second by considering the situation of domains with distinct diffusivities. Analytical solutions for the FPT densities are given in Laplace domain and are complemented by numerical backtransforms yielding FPT densities over many decades in time, confirming that the geometry and heterogeneity of the space can introduce additional characteristic time scales.
Macroscopic Observability of Spinorial Sign Changes under 2pi Rotations
Creators: name: Christian, Joy
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The question of observability of sign changes under 2pi rotations is considered. It is shown that in certain circumstances there are observable consequences of such sign changes in classical physics. A macroscopic experiment is proposed which could in principle detect the 4pi periodicity of rotations.
description: 20 pages, 5 figures; In a new appendix the vanishing curvature and non-vanishing torsion are calculated explicitly for both the 3-sphere and the real projective space
Medium resolution spectroscopy of the supergiant O3If* Cyg OB2 No7
Creators: name: Maryeva, Olga
name: Zhuchkov, Roman
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We examine the feasibility of using medium resolution spectra for determining the parameters of atmospheres of hot stars by means of numerical simulations. We chose the star Cyg OB2 No7 as a test object and obtained its spectrum (λ/Δλ=2500) with Russian-Turkish RTT150 telescope. The CMFGEN code was used to construct a model of the atmosphere of Cyg OB2 No7. For the first time we have detected the NIV λλ7103.2-7129.2 lines in the spectrum of this star and used them to determine the physical parameters of the wind. The rate of mass loss measured using the H$α$ line exceeds the loss rate measured using lines formed in the wind. This indicates that the wind is nonuniform, apparently due to rotation.
description: 6 pages, 2 figures. Published in Astrofizika / Astrophysics. Acknowledgements corrected, no textual changes