cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Brachyrhynchus Laporte 1833
Creators: name: Heiss, Ernst
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aradidae
Brachyrhynchus

description: Genus Brachyrhynchus Laporte, 1833
Brachyrhynchus Laporte, 1833: 54. Type species by monotypy: Brachyrhynchus orientalis Laporte,1833 (= Acanthia membranacea Fabricius, 1798), Oriental Region.
Mezira (Zemira) Kormilev, 1971: 31 (preoccupied). Type species: Aradus membranaceus Fabricius,1798: 526, “Cap Bon Spei” Mezira (Zimera) Kormilev, 1980: 328 (proposed new name for preoccupied Mezira (Zemira) with same type species. Brachyrhynchus Kormilev & Froeschner, 1987: 113 (revived status)
description: Published as part of Heiss, Ernst, 2012, Annotated catalogue of the flat bug family Aradidae Brullé, 1836 of Madagascar and adjacent islands (Hemiptera: Heteroptera), pp. 45-63 in Zootaxa 3426 (1) on page 51, DOI: 10.11646/zootaxa.3426.1.3, http://zenodo.org/record/214110
Exploiting arbitrage requires short selling
Creators: name: Platen, Eckhard
name: Tappe, Stefan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: Probability (math.PR)
subject: FOS: Economics and business
subject: FOS: Mathematics

description: We show that in a financial market given by semimartingales an arbitrage opportunity, provided it exists, can only be exploited through short selling. This finding provides a theoretical basis for differences in regulation for financial services providers that are allowed to go short and those without short sales. The privilege to be allowed to short sell gives access to potential arbitrage opportunities, which creates by design a bankruptcy risk.
description: 17 pages
Sculpting liquids with ultrathin shells
Creators: name: Timounay, Yousra
name: Hartwell, Alexander R.
name: He, Mengfei
name: King, D. Eric
name: Murphy, Lindsay K.
name: Démery, Vincent
name: Paulsen, Joseph D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Thin elastic films can spontaneously attach to liquid interfaces, offering a platform for tailoring their physical, chemical, and optical properties. Current understanding of the elastocapillarity of thin films is based primarily on studies of planar sheets. We show that curved shells can be used to manipulate interfaces in qualitatively different ways. We elucidate a regime where an ultrathin shell with vanishing bending rigidity imposes its own rest shape on a liquid surface, using experiment and theory. Conceptually, the pressure across the interface "inflates" the shell into its original shape. The setup is amenable to optical applications as the shell is transparent, free of wrinkles, and may be manufactured over a range of curvatures.
description: 5 pages, 4 figures
Tight Bounds on the Average Length, Entropy, and Redundancy of Anti-Uniform Huffman Codes
Creators: name: Mohajer, Soheil
name: Kakhbod, Ali
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper we consider the class of anti-uniform Huffman codes and derive tight lower and upper bounds on the average length, entropy, and redundancy of such codes in terms of the alphabet size of the source. The Fibonacci distributions are introduced which play a fundamental role in AUH codes. It is shown that such distributions maximize the average length and the entropy of the code for a given alphabet size. Another previously known bound on the entropy for given average length follows immediately from our results.
description: 9 pages, 2 figures
Il teatro in prosa del Cataplus
Creators: name: Tosello, Martina
Publisher: name: Annali Online  Lettere - Ferrara
Year: 2013

description: The “theatricality” often attributed to Lucian’s work is not limited to thematic and textual references; it is also due to a certain Second Sophistic tendency to spectacularise and the author’s need to facilitate the reception of the Dialogues by appealing to the audience’s paideia and the ability of the theatre to psychagogein, that is exerting a directive influence upon the soul. Hence, an analysis has been carried out on Cataplus (a dialogue which is particularly rich in dramatic action) to identify the rhetorical instruments used by Lucian to stimulate the audience’s imagination enargeia, akribologia, ekphrasis) thereby turning his work into a pièce, a sort of inner spectacle with every single element taking its own tangible shape. According to Lucian’s cynical, satirical vision, the tragedy of human existence is converted into comedy wherein laughter allows to alter one’s outlook on reality as a fast track to virtue.
description: Annali Online  Lettere - Ferrara, VIII 1 (2013)
Orienting Point Clouds with Dipole Propagation
Creators: name: Metzer, Gal
name: Hanocka, Rana
name: Zorin, Denis
name: Giryes, Raja
name: Panozzo, Daniele
name: Cohen-Or, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Graphics (cs.GR)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Establishing a consistent normal orientation for point clouds is a notoriously difficult problem in geometry processing, requiring attention to both local and global shape characteristics. The normal direction of a point is a function of the local surface neighborhood; yet, point clouds do not disclose the full underlying surface structure. Even assuming known geodesic proximity, calculating a consistent normal orientation requires the global context. In this work, we introduce a novel approach for establishing a globally consistent normal orientation for point clouds. Our solution separates the local and global components into two different sub-problems. In the local phase, we train a neural network to learn a coherent normal direction per patch (i.e., consistently oriented normals within a single patch). In the global phase, we propagate the orientation across all coherent patches using a dipole propagation. Our dipole propagation decides to orient each patch using the electric field defined by all previously orientated patches. This gives rise to a global propagation that is stable, as well as being robust to nearby surfaces, holes, sharp features and noise.
description: SIGGRAPH 2021
Labeled Trees and Localized Automorphisms of the Cuntz Algebras
Creators: name: Conti, Roberto
name: Szymanski, Wojciech
Publisher: name: arXiv
Year: 2008
Subjects: subject: Operator Algebras (math.OA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 46L40, 46L05, 37B10

description: We initiate a detailed and systematic study of automorphisms of the Cuntz algebras $Ø_n$ which preserve both the diagonal and the core $UHF$-subalgebra. A general criterion of invertibility of endomorphisms yielding such automorphisms is given. Combinatorial investigations of endomorphisms related to permutation matrices are presented. Key objects entering this analysis are labeled rooted trees equipped with additional data. Our analysis provides insight into the structure of ${\rm Aut}(Ø_n)$ and leads to numerous new examples. In particular, we completely classify all such automorphisms of ${\mathcal O}_2$ for the permutation unitaries in $\otimes^4 M_2$. We show that the subgroup of ${\rm Out}(Ø_2)$ generated by these automorphisms contains a copy of the infinite dihedral group ${\mathbb Z} \rtimes {\mathbb Z}_2$.
description: 35 pages, slight changes, to appear on Trans. Amer. Math. Soc
Brainstem and spinal cord pathways involved in the control of avian locomotion
Creators: name: Weinstein, Gerald Norman
Publisher: name: University of British Columbia
Year: 2010

description: This study examined several aspects of the neural control of locomotion in birds. Initially, it was necessary to define an index of normal locomotor functions. This was accomplished for both flying and walking using electromyographic analysis of forelimb and hindlimb musculature to determine which muscles best define the flight and walking patterns respectively. Secondly, in chronic surviving birds, a series of subtotal spinal lesioning experiments were performed to determine which descending pathways were responsible for the initiation of hindlimb locomotion. Thirdly, results were recorded from brainstem electrical stimulation studies designed to determine the location of locomotor areas in the avian brainstem which effected the initiation and descending control of locomotion in these animals. Results indicated the iliotibialis cranialis (ITC) and flexor cruris lateralis (FCL) muscles best define the swing and stance phases of hindlimb locomotion, respectively. Muscles which best defined the elevator and depressor phases of flying were deltoideus major (DM) and pectoralis (Pect), respectively. Results of the low thoracic selective lesioning experiments support the hypothesis that the medullary reticulospinal pathway is necessary to the initiation and control of volitional hindlimb locomotion. Further, descending input to spinal cord pattern generators via the vestibulospinal pathways may play some adjunctive role or be necessary for the descending control of locomotion. Electrical stimulation of the brainstem in acute decerebrate birds elicited locomotor behaviours in both hindlimbs and forelimbs. Four areas, including; an area near the lateral /medial spiriform nucleus; nucleus et tractus descendens trigemini; and central nucleus of the medulla, pars ventralis and dorsalis; and the lateral reticular nucleus produced varying locomotor behaviours when stimulated. Acute dorsal cord transection did not affect the electrically stimulated behaviour, indicating that descending pathways from supraspinal centres which travel in the dorsal cord do not affect the descending control of locomotion. A strong parallel exists between the results of this study in two avian species and those found in the mammalian literature.
Marlis Sewering-Wollanek, Brot oder Nationalität? Nordwestböhmische Arbeiterbewegung im Brennpunkt der Nationalitätenkonflikte (1889-1911)
Creators: name: Alexander, Manfred
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 1 (1997)
String diagrams for $4$-categories and fibrations of mapping $4$-groupoids
Creators: name: Araújo, Manuel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Category Theory (math.CT)
subject: Algebraic Topology (math.AT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 18N20, 18N30

description: We introduce a string diagram calculus for strict $4$-categories and use it to prove that given a cofinite inclusion of $4$-categorical presentations, the induced restriction functor on mapping spaces to a fixed target strict $4$-category is a fibration of strict $4$-groupoids.
The Phases of Non-supersymmetric Gauge Theories: the $SO(N_c)$ Case Study
Creators: name: Csáki, Csaba
name: Gomes, Andrew
name: Murayama, Hitoshi
name: Telem, Ofri
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the IR phases of non-supersymmetric (non-SUSY) $SO(N_c)$ gauge theories with $N_F$ fermions in the vector representation obtained by perturbing the SUSY theory with anomaly mediated SUSY breaking (AMSB). We find that of the wide variety of phases appearing in the SUSY theory only two survive: for $N_F
Preconditioning Maximal Center Gauge with Stout Link Smearing in SU(3)
Creators: name: Cais, Alan Ó
name: Kamleh, Waseem
name: Langfeld, Kurt
name: Lasscock, Ben
name: Leinweber, Derek
name: Moran, Peter
name: Sternbeck, Andre
name: von Smekal, Lorenz
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Center vortices are studied in SU(3) gauge theory using Maximal Center Gauge (MCG) fixing. Stout link smearing and over-improved stout link smearing are used to construct a preconditioning gauge field transformation, applied to the original gauge field before fixing to MCG. We find that preconditioning successfully achieves higher gauge fixing maxima. We observe a reduction in the number of identified vortices when preconditioning is used, and also a reduction in the vortex-only string tension.
description: 9 pages, 4 figures
Ost- und Westpreußen zur Zeit des polnischen Novemberaufstands in den Berichten der preußischen Verwaltung (1828-1832)
Creators: name: Hartmann, Stefan
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1996

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 45 Nr. 4 (1996)
The P-P(P) cross-section of isolated single-photon production in the $k_t$-factorization and different angular ordering unintegrated parton distributions frameworks
Creators: name: Nik, R. Aminzadeh
name: Modarres, M.
name: Olanj, N.
name: Taghavi, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the present work, it is intended to calculate and study the single and double differential cross-sections of the prompt single-photon production as a function of produced single-photon transverse momentum and rapidity, in the high-energy P-P(P) colliders, such as LHC and TEVATRON. The differential cross-sections of prompt single-photon production are calculated in the $k_t$-factorization frameworks using various angular ordering unintegrated parton distribution functions (UPDF), namely the Kimber et al. and Martin et al. procedures. These scheme-dependent UPDF are generated in the leading and next-to-leading order levels to predict and analyze the different partonic contributions to the above cross-sections. The above two procedures utilize the phenomenological parton distribution functions (PDF) libraries of Martin et al., i.e., MMHT2014. It is shown that the calculated prompt single-photon production differential cross-sections in the above frameworks are relatively successful in generating satisfactory results compared to the experimental data of different collaborations, i.e., CDF (2017), ATLAS (2017), CMS (2011) and D0 (2006), as well as the other theoretical predictions such as collinear factorization Monte Carlo calculations (the JETPHOX, SHERPA, PYTHIA, and MCFM methods). Also, for a closer precision, the differential cross-section for the NLO gluon-gluon , quark-gluon and quark-(anti)quark processes are calculated. An extensive discussion and comparison are made regarding (i) the behavior of the contributing partonic sub-processes, (ii) the possible double-counting between the $2\to 2$ and $2\to 3$ sub-processes, i.e., gluons-fusion, in our calculated prompt single-photon production differential cross-sections and (iii) the sensibility check of our results to the different angular ordering constraints.
Holonomy and equivalence of analytic foliations
Creators: name: Chaves, Francisco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: The main goal of this paper is the analytic classification of the germs of singular foliations generated, up to an analytic change of coordinates, by the germs of vector fields of form the $x\partial_x+\sum_{i=1}^{n}a_i(x,\mathbf{z})\partial_{z_i}$, where $a_i(x,\mathbf{z})$ is a germ of analytic function with $a_i(x,0)=0$. We focus on the connection with the conjugation of the holonomies related to them. We prove, under some hypothesis, that these germs of singular foliations are analytically classified once their local holonomy along a given separatrix are analytically conjugated.
description: 21 pages, 5 figures
Astronomical Image Processing with Array Detectors
Creators: name: Houde, Martin
name: Vaillancourt, John E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We address the question of astronomical image processing from data obtained with array detectors. We define and analyze the cases of evenly, regularly, and irregularly sampled maps for idealized (i.e., infinite) and realistic (i.e., finite) detectors. We concentrate on the effect of interpolation on the maps, and the choice of the kernel used to accomplish this task. We show how the normalization intrinsic to the interpolation process must be carefully accounted for when dealing with irregularly sampled grids. We also analyze the effect of missing or dead pixels in the array, and their consequences for the Nyquist sampling criterion.
description: 31 pages, 5 figures, accepted for publication in the PASP
OZI violating eight-quark interactions as a thermometer for chiral transitions
Creators: name: Osipov, A. A.
name: Hiller, B.
name: Moreira, J.
name: Blin, A. H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This work is a follow-up of our recent observation that in the SU(3) flavor limit with vanishing current quark masses the temperature for the chiral transition is substantially reduced by adding eight-quark interactions to the Nambu - Jona-Lasinio Lagrangian with U_A(1) breaking. Here we generalize the case to realistic light and strange quark masses and confirm our prior result. Additionally, we demonstrate that depending on the strength of OZI violating eight-quark interactions, the system undergoes either a rapid crossover or a first order phase transition. The meson mass spectra of the low lying pseudoscalars and scalars at T=0 are not sensitive to the difference in the parameter settings that correspond to these two alternatives, except for the singlet-octet mixing scalar channels, mainly the sigma meson.
description: LaTeX, 5 pages, 3 figures
Development of a real-time, microprocessor based, detector of epileptiform activity in EEG
Creators: name: Panych, Lawrence Patrick
Publisher: name: University of British Columbia
Year: 2010

description: This is an experimental thesis describing the development of a monitor for the detection of epileptic activity in the human EEG. The monitor, built around an Apple II Plus microcomputer system, has the capability for real-time detection of seizure activity and interictal transients (spikes and sharp waves or SSW) on 16 EEG channels. A dynamic graphics display symbolically presents to the user a running sum of the SSW detected during a monitoring session. A report is produced at the end of the session which includes a summary of SSW detections and the on-line phase reversal processing of the transients. An automatic seizure detection by the monitor will trigger the marking of the location of seizure records on magnetic EEG recording devices. Of significance is a theoretical explanation which shows why a simple slope detector performs as well as a complicated parametric transient detector. The real-time capability of the slope detector makes it superior in practical applications. Statistical detection theory is applied to the problem of EEG epileptic transient detection and the computer model which calculates a theoretical performance factor for detectors is described. Simple algorithms for selecting epileptic transients based on morphological considerations and methods of artifact rejection are presented. The monitor was evaluated in a clinical seizure investigation unit at the University of British Columbia. Clinically significant seizures were detected over a six month period with a very high success rate. In the cases of patients with focal epilepsies, predictions of focus locations by the device agreed with the neurological diagnoses of the patients.
The index of certain Stiefel manifolds
Creators: name: Basu, Samik
name: Kundu, Bikramjit
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Topology (math.AT)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 55M20, 55M35 (Primary), 52A35, 55N91 (Secondary)

description: This paper computes the Fadell-Husseini index of Stiefel manifolds in the case where the group acts via permutations of the orthogonal vectors. The computations are carried out in the case of elementary Abelian $p$-groups. The results are shown to imply certain generalizations of the Kakutani-Yamabe-Yujobo theorem.
description: To appear in Journal of Fixed Point Theory and Applications
A time-dependent radiative model for the atmosphere of the eccentric transiting planets
Creators: name: Iro, N.
name: Deming, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a time-dependent radiative model for the atmosphere of the transiting planets that take into account the eccentricity of their orbit. We investigate the temporal temperature and flux variations due to the planet-star distance variability. We will also discuss observational aspects with Spitzer measurements.
description: To appear in the Proceedings of the 253rd IAU Symposium: "Transiting Planets", May 2008, Cambridge, MA. 4 pages, 3 figures
Cercyon analis
Creators: name: Rodriguez, Georgina
name: Archangelsky, Miguel
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Hydrophilidae
Cercyon
Cercyon analis

description: Cercyon analis second instar larvae
Morphometry. Measurements and ratios in Table 1.
Chaetotaxy. Head capsule. Frontale without secondary sensilla; gFR1 with eight setae. Each parietale with five secondary sensilla: one short seta near seta PA8, one short seta between seta PA7 and setal group PA12–14, one short seta behind seta PA9, one pore next to pore PA19 and one short seta close to seta PA11; setae PA16, PA18, PA21 and PA26 proportionally longer. Antenna. Without secondary sensilla, sensory appendage (SE1) proportionally shorter.
Mandibles. Each mandible with three secondary setae, two short setae on basal outer face, behind MN1, third one minute, near pore MN4. Maxilla. Stipes without secondary setae; MP2 with setae MP14 and MX 16 stouter than in first instar larvae. Labium. Without secondary sensilla.
description: Published as part of Rodriguez, Georgina & Archangelsky, Miguel, 2023, Larval chaetotaxy and morphometry of Megasternini: Cercyon (Paracercyon) Seidlitz, Cryptopleurum Mulsant and Pelosoma Mulsant (Coleoptera: Hydrophilidae), pp. 45-66 in Zootaxa 5318 (1) on page 52, DOI: 10.11646/zootaxa.5318.1.2, http://zenodo.org/record/8158191
Curvature extrema and four-vertex theorems for polygons and polyhedra
Creators: name: Musin, Oleg R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Metric Geometry (math.MG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Discrete analogs of extrema of curvature and generalizations of the four-vertex theorem to the case of polygons and polyhedra are suggested and developed. For smooth curves and polygonal lines in the plane, a formula relating the number of extrema of curvature to the winding numbers of the curves (polygonal lines) and their evolutes is obtained. Also are considered higher-dimensional analogs of the four-vertex theorem for regular and shellable triangulations.
description: Several changes in the last section. In the original version of this paper we claimed that any regular triangulation of a convex d-polytope has at least d ears. For a proof we used the same arguments as in Schatteman's paper [22]. Since this paper has certain gaps (see our paper [1]), the d -ears problem of a regular triangulation is still open
Toward a possible integration of NeuronGPU in NEST
Creators: name: Golosio, Bruno
name: De Luca, Chiara
name: Pastorelli, Elena
name: Simula, Francesco
name: Tiddia, Gianmarco
name: Paolucci, Pier Stanislao
Publisher: name: Zenodo
Year: 2020
Subjects: Spiking neural network simulator, GPU

description: Abstract of oral presentation at NEST Conference 2020, 29-30 June 2020, p. 7, https://indico-jsc.fz-juelich.de/event/115/
description: HBP SGA3 grant 945539
Non-thermal neutrinos from supernovae leaving a magnetar
Creators: name: Horiuchi, Shunsaku
name: Suwa, Yudai
name: Takami, Hajime
name: Ando, Shin'ichiro
name: Sato, Katsuhiko
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Under the fossil field hypothesis of the origin of magnetar magnetic fields, the magnetar inherits its magnetic field from its progenitor. We show that during the supernova of such a progenitor, protons may be accelerated to \sim 10^4 GeV as the supernova shock propagates in the magnetic stellar envelope. Inelastic nuclear collisions of these protons produce a flash of high-energy neutrinos arriving a few hours after thermal (10 MeV) neutrinos. The neutrino flash is characterized by energies up to O(100) GeV and durations seconds to hours, depending on the progenitor: those from smaller Type Ibc progenitors are typically shorter in duration and reach higher energies compared to those from larger Type II progenitors. A Galactic Type Ib supernova leaving behind a magnetar remnant will yield up to \sim 160 neutrino induced muon events in Super-Kamiokande, and up to \sim 7000 in a km^3 class detector such as IceCube, providing a means of probing supernova models and the presence of strong magnetic fields in the stellar envelope.
description: 8 pages, 1 figure, added 1 section and references
In which shell-type SNRs should we look for gamma-rays and neutrinos from p-p collisions?
Creators: name: Katz, Boaz
name: Waxman, Eli
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a simple analytic model for the various contributions to the non-thermal emission from shell type SNRs, and show that this model's results reproduce well the results of previous detailed calculations. We show that the \geq 1 TeV gamma ray emission from the shell type SNRs RX J1713.7-3946 and RX J0852.0-4622 is dominated by inverse-Compton scattering of CMB photons (and possibly infra-red ambient photons) by accelerated electrons. Pion decay (due to proton-proton collisions) is shown to account for only a small fraction, \lesssim10^-2, of the observed flux, as assuming a larger fractional contribution would imply nonthermal radio and X-ray synchrotron emission and thermal X-ray Bremsstrahlung emission that far exceed the observed radio and X-ray fluxes. Models where pion decay dominates the \geq 1 TeV flux avoid the implied excessive synchrotron emission (but not the implied excessive thermal X-ray Bremsstrahlung emission) by assuming an extremely low efficiency of electron acceleration, K_ep \lesssim 10^-4 (K_ep is the ratio of the number of accelerated electrons and the number of accelerated protons at a given energy). We argue that observations of SNRs in nearby galaxies imply a lower limit of K_ep \gtrsim 10^-3, and thus rule out K_ep values \lesssim 10^-4 (assuming that SNRs share a common typical value of K_ep). It is suggested that SNRs with strong thermal X-ray emission, rather than strong non-thermal X-ray emission, are more suitable candidates for searches of gamma rays and neutrinos resulting from proton-proton collisions. In particular, it is shown that the neutrino flux from the SNRs above is probably too low to be detected by current and planned neutrino observatories (Abridged).
description: 13 pages, 1 figure, accepted for publication in JCAP, minor revisions
Non-linear Preheating with Scalar Metric Perturbations
Creators: name: Bastero-Gil, M.
name: Tristram, M.
name: Macias-Perez, J.
name: Santos, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have studied preheating of field perturbations in a 3-dimensional lattice including the effect of scalar metric perturbations, in two generic models of inflation: chaotic inflation with a quartic potential, and standard hybrid inflation. We have prepared the initial state for the classical evolution of the system with vanishing vector and tensor metric perturbations, consistent with the constraint equations, the energy and momentum constraints. The non-linear evolution inevitably generates vector and tensor modes, and this reflects on how well the constraint equations are fulfilled during the evolution. The induced preheating of the scalar metric perturbations is not large enough to backreact onto the fields, but it could affect the evolution of vector and tensor modes. This is the case in hybrid inflation for some values of the coupling $g$ and the height of potential $V_0^{1/4}$. For example with $V_0^{1/4} \simeq 10^{15}$ GeV, preheating of scalar perturbations is such that their source term in the evolution equation of tensor and vector becomes comparable to that of the field anisotropic stress.
description: 15 pages, 12 eps figures
Cercyon analis
Creators: name: Rodriguez, Georgina
name: Archangelsky, Miguel
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Hydrophilidae
Cercyon
Cercyon analis

description: Cercyon analis third instar larvae
Morphometry. Measurements and ratios in Table 1.
Chaetotaxy. Head capsule (Figs. 20–22). Frontale usually without secondary sensilla (specimen illustrated with one secondary seta on left side near FR5–6) (Fig. 20); gFR1 with eight setae. Each parietale with five secondary sensilla distributed as in second instar larvae; setae PA8, PA9, PA16 and PA21 proportionally longer than in first instar larvae. Antenna (Fig. 23). Without secondary sensilla, sensory appendage (SE1) proportionally shorter than that of second instar larva. Mandibles (Figs. 24–25). Each mandible with three secondary setae, distributed as in second instar larvae. Maxilla (Figs. 26–27). Stipes without secondary setae, similar to that of second instar larva. Labium (Figs. 21, 28). Without secondary sensilla, LA6 proportionally longer.
description: Published as part of Rodriguez, Georgina & Archangelsky, Miguel, 2023, Larval chaetotaxy and morphometry of Megasternini: Cercyon (Paracercyon) Seidlitz, Cryptopleurum Mulsant and Pelosoma Mulsant (Coleoptera: Hydrophilidae), pp. 45-66 in Zootaxa 5318 (1) on page 52, DOI: 10.11646/zootaxa.5318.1.2, http://zenodo.org/record/8158191
HUMAP: Hierarchical Uniform Manifold Approximation and Projection
Creators: name: Marcílio-Jr, Wilson E.
name: Eler, Danilo M.
name: Paulovich, Fernando V.
name: Martins, Rafael M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: Dimensionality reduction (DR) techniques help analysts to understand patterns in high-dimensional spaces. These techniques, often represented by scatter plots, are employed in diverse science domains and facilitate similarity analysis among clusters and data samples. For datasets containing many granularities or when analysis follows the information visualization mantra, hierarchical DR techniques are the most suitable approach since they present major structures beforehand and details on demand. This work presents HUMAP, a novel hierarchical dimensionality reduction technique designed to be flexible on preserving local and global structures and preserve the mental map throughout hierarchical exploration. We provide empirical evidence of our technique's superiority compared with current hierarchical approaches and show a case study applying HUMAP for dataset labelling.
Cryptopleurum minutum
Creators: name: Rodriguez, Georgina
name: Archangelsky, Miguel
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Hydrophilidae
Cryptopleurum
Cryptopleurum minutum

description: Cryptopleurum minutum third- instar larva
Morphometry. Measurements and ratios in Table 1.
Chaetotaxy. Head capsule (Figs. 38–40). Frontale without secondary sensilla and lacking egg-bursters; FR8 and FR9 proportionally longer; gFR1 with eight short setae. Each parietale with five secondary sensilla; one short seta near PA9, one pore between pore PA19 and seta PA20, one rather short seta close to seta PA8, one short seta near group PA12–14 and one short seta close to seta PA 11; setae PA8, PA9, PA16, PA18 and PA21 proportionally longer. Antenna (Fig. 41). Without secondary sensilla, sensory appendage (SE1) proportionally shorter; gAN on A3 with a group of at least six sensilla. Mandibles (Figs. 42–43). Each mandible with three short secondary setae, two on basal outer face, behind MN1, third one minute, behind pore MN4. Maxilla (Figs. 44–46). Without secondary setae; setae MP6, MP13, MX 14 and MP21 proportionally longer. Labium (Figs. 39, 47). Without secondary sensilla, seta LA6 proportionally longer; short seta LA5 present, lateral to pore LA7.
description: Published as part of Rodriguez, Georgina & Archangelsky, Miguel, 2023, Larval chaetotaxy and morphometry of Megasternini: Cercyon (Paracercyon) Seidlitz, Cryptopleurum Mulsant and Pelosoma Mulsant (Coleoptera: Hydrophilidae), pp. 45-66 in Zootaxa 5318 (1) on page 55, DOI: 10.11646/zootaxa.5318.1.2, http://zenodo.org/record/8158191
Response tensor for a spin-dependent electron gas: dependence on the choice of spin operator
Creators: name: Demcsak, Victor. M.
name: Melrose, Donald. B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: It is shown that the choice of spin-operator affects the form of the response tensor describing a spin-dependent electron gas. The covariant, spin-dependent response tensor for a magnetic dipole moment-polarized electron gas (statistical distribution of electrons and positrons) is evaluated. A simultaneous eigenfunction of both the magnetic-moment spin-operator and the Dirac Hamiltonian is constructed, from which explicit expressions for the magnetic-moment states and the corresponding vertex functions are derived. It is shown that a gas of electrons having a preferred magnetic-moment spin has a rotatory-type response that is gyrotropic. In contrast, when the helicity is chosen as the spin operator, the response of an electron gas with a preferred helicity spin has a rotatory response that is analogous to an optically active medium. The distinction between these spin operators does not appear in conventional treatments of spin-dependence in quantum plasmas.
Ergodic Theory and Visualization I: Mesochronic Plots for Visualization of Ergodic Partition and Invariant Sets
Creators: name: Levnajić, Zoran
name: Mezić, Igor
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We present a computational study of a visualization method for invariant sets based on ergodic partition theory, first proposed in [1,2]. The algorithms for computation of the time averages of observables on phase space are developed and used to provide an approximation of the ergodic partition of the phase space. We term the graphical representation of this approximation - based on time averages of observables - a Mesochronic Plot (from Greek: \textit{meso} - mean, \textit{chronos} - time}. The method is useful for identifying low-dimensional projections (e.g. two-dimensional slices) of invariant structures in phase spaces of dimensionality bigger than two. We also introduce the concept of the ergodic quotient space, obtained by assigning a point to every ergodic set, and provide an embedding method whose graphical representation we call the Mesochronic Scatter Plot (MSP). We use the Chirikov standard map as a well-known and dynamically rich example in order to illustrate the implementation of our methods. In addition, we expose applications to other higher dimensional maps such as the Froéschle map for which we utilize our methods to analyze merging of resonances and, the three-dimensional Extended standard map for which we study the conjecture on its ergodicity [3]. We extend the study in our next paper [4] by investigating the visualization of periodic sets using harmonic time averages. Both of these methods are related to eigenspace structure of the Koopman operator.
A variational study of two-nucleon systems with lattice QCD
Creators: name: Amarasinghe, Saman
name: Baghdadi, Riyadh
name: Davoudi, Zohreh
name: Detmold, William
name: Illa, Marc
name: Parreno, Assumpta
name: Pochinsky, Andrew V.
name: Shanahan, Phiala E.
name: Wagman, Michael L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The low-energy spectrum and scattering of two-nucleon systems are studied with lattice quantum chromodynamics using a variational approach. A wide range of interpolating operators are used: dibaryon operators built from products of plane-wave nucleons, hexaquark operators built from six localized quarks, and quasi-local operators inspired by two-nucleon bound-state wavefunctions in low-energy effective theories. Sparsening techniques are used to compute the timeslice-to-all quark propagators required to form correlation-function matrices using products of these operators. Projection of these matrices onto irreducible representations of the cubic group, including spin-orbit coupling, is detailed. Variational methods are applied to constrain the low-energy spectra of two-nucleon systems in a single finite volume with quark masses corresponding to a pion mass of 806 MeV. Results for S- and D-wave phase shifts in the isospin singlet and triplet channels are obtained under the assumption that partial-wave mixing is negligible. Tests of interpolating-operator dependence are used to investigate the reliability of the energy spectra obtained and highlight both the strengths and weaknesses of variational methods. These studies and comparisons to previous studies using the same gauge-field ensemble demonstrate that interpolating-operator dependence can lead to significant effects on the two-nucleon energy spectra obtained using both variational and non-variational methods, including missing energy levels and other discrepancies. While this study is inconclusive regarding the presence of two-nucleon bound states at this quark mass, it provides robust upper bounds on two-nucleon energy levels that can be improved in future calculations using additional interpolating operators and is therefore a step toward reliable nuclear spectroscopy from the underlying Standard Model of particle physics.
description: Corrected a relative normalization error in correlation matrix. Updated results and discussion. 111 pages, 44 figures
Young England : the medieval spirit in an industrial age, 1842-1850
Creators: name: Smith, David Lloyd
Publisher: name: University of British Columbia
Year: 2010

description: This thesis is an analysis of the writings and parliamentary activity of the Young England movement of the 1840s. Though dismissed by many historians as being well-intentioned but whimsically romantic, the movement, in fact, offered solutions to the dislocating effects of the Industrial Revolution which were often advanced for their time. Composed of young noblemen, under the titular leadership of Benjamin Disraeli, Young England sought to adapt the organic ideology of the Medieval Revivalists (Cobbett, Coleridge, Southey, and so on) to the realities of an industrialized society. The Young Englanders, on the whole, opposed the atomistic tendencies of laissez- faire Liberalism, and supported such progressive measures as the protection of the working conditions and hours of labour of the industrial worker, government sponsorship of agricultural allotments for the labouring poor, sanitary reform, and publicly-funded parks, museums, gardens, libraries, and baths which would be free and accessible to all. Though the movement fell apart over the Maynooth controversy and the repeal of the Corn Laws, several of its members continued to advocate Young England schemes until the end of the decade, at the very least.
Hans Schenk, Die Böhmischen Länder. Ihre Geschichte, Kultur und Wirtschaft
Creators: name: Bahlcke, Joachim
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1997

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 46 Nr. 1 (1997)
Planetary Companions to Evolved Intermediate-Mass Stars: 14 Andromedae, 81 Ceti, 6 Lyncis, and HD 167042
Creators: name: Sato, Bun'ei
name: Toyota, Eri
name: Omiya, Masashi
name: Izumiura, Hideyuki
name: Kambe, Eiji
name: Masuda, Seiji
name: Takeda, Yoichi
name: Itoh, Yoichi
name: Ando, Hiroyasu
name: Yoshida, Michitoshi
name: Kokubo, Eiichiro
name: Ida, Shigeru
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the detection of four extrasolar planets orbiting evolved intermediate-mass stars from a precise Doppler survey of G and K giants at Okayama Astrophysical Observatory. All of the host stars are considered to be formerly early F-type or A-type dwarfs when they were on the main sequence. 14 And (K0 III) is a clump giant with a mass of 2.2 M_solar and has a planet of minimum mass m_2sin i=4.8 M_Jup in a nearly circular orbit with a 186 day period. This is one of the innermost planets around evolved intermediate-mass stars and such planets have only been discovered in clump giants. 81 Cet (G5 III) is a clump giant with 2.4 M_solar hosting a planet of m_2sin i=5.3 M_Jup in a 953 day orbit with an eccentricity of e=0.21. 6 Lyn (K0 IV) is a less evolved subgiant with 1.7 M_solar and has a planet of m_2sin i=2.4 M_Jup in a 899 day orbit with e=0.13. HD 167042 (K1 IV) is also a less evolved star with 1.5 M_solar hosting a planet of m_2sin i=1.6 M_Jup in a 418 day orbit with e=0.10. This planet was independently announced by Johnson et al. (2008, ApJ, 675, 784). All of the host stars have solar or sub-solar metallicity, which supports the lack of metal-rich tendency in planet-harboring giants in contrast to the case of dwarfs.
description: 23 pages, 6 figures, accepted for publication in PASJ
Peak Quasisymmetric Functions and Eulerian Enumeration
Creators: name: Billera, Louis J.
name: Hsiao, Samuel K.
name: van Willigenburg, Stephanie
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05E05, 05A15, 06A07, 16W30

description: Via duality of Hopf algebras, there is a direct association between peak quasisymmetric functions and enumeration of chains in Eulerian posets. We study this association explicitly, showing that the notion of $\cd$-index, long studied in the context of convex polytopes and Eulerian posets, arises as the dual basis to a natural basis of peak quasisymmetric functions introduced by Stembridge. Thus Eulerian posets having a nonnegative $\cd$-index (for example, face lattices of convex polytopes) correspond to peak quasisymmetric functions having a nonnegative representation in terms of this basis. We diagonalize the operator that associates the basis of descent sets for all quasisymmetric functions to that of peak sets for the algebra of peak functions, and study the $g$-polynomial for Eulerian posets as an algebra homomorphism.
description: 23 pages; final version
Deep Reinforcement Learning for Adaptive Exploration of Unknown Environments
Creators: name: Peake, Ashley
name: McCalmon, Joe
name: Zhang, Yixin
name: Myers, Daniel
name: Alqahtani, Sarra
name: Pauca, Paul
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Performing autonomous exploration is essential for unmanned aerial vehicles (UAVs) operating in unknown environments. Often, these missions start with building a map for the environment via pure exploration and subsequently using (i.e. exploiting) the generated map for downstream navigation tasks. Accomplishing these navigation tasks in two separate steps is not always possible or even disadvantageous for UAVs deployed in outdoor and dynamically changing environments. Current exploration approaches either use a priori human-generated maps or use heuristics such as frontier-based exploration. Other approaches use learning but focus only on learning policies for specific tasks by either using sample inefficient random exploration or by making impractical assumptions about full map availability. In this paper, we develop an adaptive exploration approach to trade off between exploration and exploitation in one single step for UAVs searching for areas of interest (AoIs) in unknown environments using Deep Reinforcement Learning (DRL). The proposed approach uses a map segmentation technique to decompose the environment map into smaller, tractable maps. Then, a simple information gain function is repeatedly computed to determine the best target region to search during each iteration of the process. DDQN and A2C algorithms are extended with a stack of LSTM layers and trained to generate optimal policies for the exploration and exploitation, respectively. We tested our approach in 3 different tasks against 4 baselines. The results demonstrate that our proposed approach is capable of navigating through randomly generated environments and covering more AoI in less time steps compared to the baselines.
Blazing a Trail via Matrix Multiplications: A Faster Algorithm for Non-shortest Induced Paths
Creators: name: Chiu, Yung-Chung
name: Lu, Hsueh-I
Publisher: name: arXiv
Year: 2021
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences
subject: 05C38, 05C10, 05C85, 68P05

description: For vertices $u$ and $v$ of an $n$-vertex graph $G$, a $uv$-trail of $G$ is an induced $uv$-path of $G$ that is not a shortest $uv$-path of $G$. Berger, Seymour, and Spirkl [Discrete Mathematics 2021] gave the previously only known polynomial-time algorithm, running in $O(n^{18})$ time, to either output a $uv$-trail of $G$ or ensure that $G$ admits no $uv$-trail. We reduce the complexity to the time required to perform a poly-logarithmic number of multiplications of $n^2\times n^2$ Boolean matrices, leading to a largely improved $O(n^{4.75})$-time algorithm.
description: 18 pages, 6 figures, a preliminary version appeared in STACS 2022
The effect of galaxy mass ratio on merger--driven starbursts
Creators: name: Cox, T. J.
name: Jonsson, Patrik
name: Somerville, Rachel S.
name: Primack, Joel R.
name: Dekel, Avishai
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We employ numerical simulations of galaxy mergers to explore the effect of galaxy mass ratio on merger--driven starbursts. Our numerical simulations include radiative cooling of gas, star formation, and stellar feedback to follow the interaction and merger of four disk galaxies. The galaxy models span a factor of 23 in total mass and are designed to be representative of typical galaxies in the local Universe. We find that the merger--driven star formation is a strong function of merger mass ratio, with very little, if any, induced star formation for large mass ratio mergers. We define a burst efficiency that is useful to characterize the merger--driven star formation and test that it is insensitive to uncertainties in the feedback parameterization. In accord with previous work we find that the burst efficiency depends on the structure of the primary galaxy. In particular, the presence of a massive stellar bulge stabilizes the disk and suppresses merger--driven star formation for large mass ratio mergers. Direct, co--planar merging orbits produce the largest tidal disturbance and yield that most intense burst of star formation. Contrary to naive expectations, a more compact distribution of gas or an increased gas fraction both decrease the burst efficiency. Owing to the efficient feedback model and the newer version of SPH employed here, the burst efficiencies of the mergers presented here are smaller than in previous studies.
description: 26 pages, 21 figures, submitted to MNRAS