cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Walking the dog fast in practice: Algorithm engineering of the Fréchet distance
Creators: name: Bringmann, Karl
name: Künnemann, Marvin
name: Nusser, André
Publisher: name: Journal of Computational Geometry
Year: 2021

description: The Fréchet distance provides a natural and intuitive measure for the popular task of computing the similarity of two (polygonal) curves. While a simple algorithm computes it in near-quadratic time, a strongly subquadratic algorithm cannot exist unless the Strong Exponential Time Hypothesis fails. Still, fast practical implementations of the Fréchet distance, in particular for realistic input curves, are highly desirable. This has even lead to a designated competition, the ACM SIGSPATIAL GIS Cup 2017: Here, the challenge was to implement a near-neighbor data structure under the Fréchet distance. The bottleneck of the top three implementations turned out to be precisely the decision procedure for the Fréchet distance. In this work, we present a fast, certifying implementation for deciding the Fréchet distance, in order to (1) complement its pessimistic worst-case hardness by an empirical analysis on realistic input data and to (2) improve the state of the art for the GIS Cup challenge. We experimentally evaluate our implementation on a large benchmark consisting of several data sets (including handwritten characters and GPS trajectories). Compared to the winning implementation of the GIS Cup, we obtain running time improvements of up to more than two orders of magnitude for the decision procedure and of up to a factor of 30 for queries to the near-neighbor data structure.
description: Journal of Computational Geometry, Vol. 12 No. 1 (2021)
Decays of Higgs Boson into Pseudoscalar Meson Pair of Different Flavours
Creators: name: Chia, Swee-Ping
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The flavour-changing quark-Higgs coupling does not arise at the tree level in the Standard Model. It is, however, induced by one-loop effects. In this paper, we present an exact calculation of the Higgs-penguin vertex in the tHooft-Feynman gauge. Renormalization of the vertex is effected by a prescription by Chia and Chong which gives an expression for the counter term identical to that obtained by employing Ward-Takahashi identity. The on-shell vertex function for the Higgs-penguin vertex is obtained, and its dependence on Higgs mass is investigated. Our calculation is applied to the following process: decays of Higgs boson into pseudoscalar meson pair of different flavours: Kpi and BK. The coupling of pseudoscalar meson to quark is effected through a gamma5 coupling. The decay rates are found to be very small.
Canis rufus Audubon and Bachman 1851
Creators: name: W. Christopher Wozencraft
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Canidae
Canis
Canis rufus

description: Canis rufus Audubon and Bachman, 1851. Viviparous Quadrupeds of North America, 2:240. TYPE LOCALITY: Not given. Restricted by Goldman (1937) to " 15 miles west of Austin, Texas " [USA], based on accounts from Audubon and Bachman (1851). DISTRIBUTION: SE and SC USA, from Florida to C Texas and north to S Indiana and Missouri. STATUS: U.S. ESA - Endangered (except Dare, Tyrrell, Hyde, and Washington Counties, North Carolina, which have a nonessential experimental population); IUCN - Endangered. SYNONYMS: floridanus Miller, 1912; gregoryi Goldman, 1937; niger Bartram, 1791. COMMENTS: Reviewed and recognized by Paradiso and Nowak (1972, Mammalian Species, 22); also recognized by Paradiso (1968), Atkins and Dillion (1971), and Nowak (1979). The widely used name C. niger is invalid (International Commission on Zoological Nomenclature, 1957«). The validity of rufus as a full species was questioned by Clutton-Brock et al. (1976), due to the existence of natural hybrids with lupus and latrans. Natural hybridization may be a consequence of habitat disruption by man (Paradiso and Nowak, 1971). Nowak (1979) provided evidence for specific distinctness. All specimens examined by Wayne and Jenks (1991) had either a lupus or latrans mtDNA genotype.
description: Published as part of W. Christopher Wozencraft, 1993, Order Carnivora, pp. 279-348 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 281, DOI: 10.5281/zenodo.7359191
description: {"references": ["Goldman, E. A. 1937. The wolves of North America. Journal of Mammalogy, 18: 37 - 45.", "Nowak, R. M. 1979. North American Quaternary Canis. University of Kansas, Museum of Natural History, Monograph, 6: 1 - 154.", "Clutton-Brock, J., G. B. Corbet, and M. Hills. 1976. A review of the family Canidae, with classification by numerical methods. Bulletin of the British Museum (Natural History), 29 (3): 119 - 199.", "Paradiso, J. L., and R. M. Nowak. 1971 [1972]. A report on the taxonomic status and distribution of the red wolf. United States Fish and Wildlife Service, Special Scientific Report- - Wildlife, 145: 1 - 36.", "Wayne, R. K., and S. M. Jenks. 1991. Mitochondrial DNA analysis implying extensive hybridization of the endangered red wolf Canis rufus. Nature, 351: 565 - 568."]}
Stellar variability in open clusters. I. A new class of variable stars in NGC 3766
Creators: name: Mowlavi, N.
name: Barblan, F.
name: Saesen, S.
name: Eyer, L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Aims. We analyze the population of periodic variable stars in the open cluster NGC 3766 based on a 7-year multi-band monitoring campaign conducted on the 1.2 m Swiss Euler telescope at La Silla, Chili. Methods. The data reduction, light curve cleaning and period search procedures, combined with the long observation time line, allow us to detect variability amplitudes down to the milli-magnitude level. The variability properties are complemented with the positions in the color-magnitude and color-color diagrams to classify periodic variable stars into distinct variability types. Results. We find a large population (36 stars) of new variable stars between the red edge of slowly pulsating B (SPB) stars and the blue edge of delta Sct stars, a region in the Hertzsprung-Russell (HR) diagram where no pulsation is predicted to occur based on standard stellar models. The bulk of their periods ranges from 0.1 to 0.7 d, with amplitudes between 1 and 4 mmag for the majority of them. About 20% of stars in that region of the HR diagram are found to be variable, but the number of members of this new group is expected to be higher, with amplitudes below our milli-magnitude detection limit. The properties of this new group of variable stars are summarized, and arguments set forth in favor of a pulsation origin of the variability, with g-modes sustained by stellar rotation. Potential members of this new class of low-amplitude periodic (most probably pulsating) A and late-B variables in the literature are discussed. We additionally identify 16 eclipsing binary, 13 SPB, 14 delta Sct and 12 gamma Dor candidates, as well as 72 fainter periodic variables. All are new discoveries. Conclusions. We encourage to search for the existence of this new class of variables in other young open clusters, especially in those hosting a rich population of Be stars.
description: Accepted for publication in A&A. Size of pdf file ~7Mo. Figures 12, 13, 14 and in the Appendix are of lower quality. Full quality images published in A&A
title: Evaluation of Liquid Ice Melting Additives for Winter Maintenance Applications
Creators: name: Lammers, Erin
Publisher: name: University of Kentucky Libraries
Year: 2021
Subjects: subject: FOS: Civil engineering
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: Winter weather can often pose difficulties for transportation agencies as they work to clear roads of snow and ice quickly so that motorists can travel safely and efficiently. Kentucky has made efforts to maximize efficiency within its winter maintenance program by focusing on optimized equipment usage and personnel time management. This study’s objective was to evaluate novel anti-icers and calculate how their performance compared to the current performance of brine and calcium chloride mixture. New brine additives claim to offer better results, but there is very little guidance about how to systematically evaluate new anti-icers. The author developed a testing methodology that could be performed in a laboratory setting to evaluate an anti-icer’s ability to “undercut”, or break the bond between pavement and ice. Four products were tested, as well as evaluated for price per lane mile when the additives were diluted with brine. The report concludes with a brief analysis of the environmental impacts of the additives, including effects on infrastructure and biosystems. Lastly, a priority ranking table summarizes the findings and provides an approach for other agencies to make their own decisions regarding anti-icing materials.
description: © 2021 Erin Lammers
Pairing insights in iron-based superconductors from scanning tunneling microscopy
Creators: name: Song, Can-Li
name: Hoffman, Jennifer E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Scanning tunneling microscopy (STM) has made tremendous progress in the study and understanding of both classical and unconventional superconductors. This has motivated a rapidly growing effort to apply the same techniques to the iron-based high-Tc superconductors since their discovery in 2008. Five years have brought exciting advances in imaging and spectroscopic investigation of this new class of materials. In this review, we focus on several recent STM contributions to the identification of the gap symmetry and pairing glue. We highlight the unique capabilities and challenges still ahead for STM studies of iron-based superconductors.
description: 12 pages,8 figures.to be appeared in Current Opinion in Solid State & Materials Science
Book Review of The Alps by Shiro Shirahata
Creators: name: Sandy, John H.
Publisher: name: Library Journal
Year: 1981
Subjects: Alps
mountain peaks
photographs
Matterhorn
Eiger

description: Book review. This book is a collection of color photographs of major peaks in four mountain ranges in the European Alps. With careful attention to composition before releasing the shutter, Shiro Shirahata, a Japanese photographer, captures spectacular photographs of the Matterhorn, Eiger and other major peaks.
On-line Databases Vital for Scientific Research
Creators: name: Sandy, John H.
Publisher: name: Science
Year: 1982
Subjects: information retrieval
databases
research

description: Computerized databases covering science topics offer many advantages over older print indexes with the same content. On-line databases represent a revolutionary change in how search for information is conducted. Adoption to this technology continues to grow. On-line databases are essential for productive research.
New estimate for the contribution of the Geminga pulsar to the positron excess
Creators: name: Wu, Donglin
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The origin of the positron excess is one of the most intriguing mysteries in astroparticle physics. The recent discovery of extended $γ$-ray halos around the pulsars Geminga, Monogem and PSR J0621+3755 have brought indirect evidence that pulsar wind nebulae accelerate $e^{\pm}$ up to very-high-energy. While the precision of previous data does not permit precise evaluation of the parameters for the pulsars, we are able to find the more precise shape of the injection spectrum using new data released by HAWC and LHAASO in 2020 and 2021. We find that this is well fitten by a power-law with an exponential cutoff. The spectral index is quite hard with values around 1 while the cutoff energy is roughly 100 TeV. We also derive the strength of the diffusion coefficient around the pulsars finding that it is two orders of magnitude lower than the average of the Galaxy. Finally, we use the above mentioned results to estimate the contribution of Geminga to the positron excess. This source alone can contribute to the entire positron excess at around 1 TeV.
description: 16 pages, 8 figures; v2: accepted for publication in JCAP, as same as the published paper
Efficient Site-specific Low-energy Electron Production via Interatomic Coulombic Decay Following Resonant Auger Decay
Creators: name: Kimura, M.
name: Fukuzawa, H.
name: Sakai, K.
name: Mondal, S.
name: Kukk, E.
name: Kono, Y.
name: Nagaoka, S.
name: Tamenori, Y.
name: Saito, N.
name: Ueda, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We identified interatomic Coulombic decay (ICD) channels in argon dimers after spectator-type resonant Auger decay $2p^{-1}~3d \to 3p^{-2}3d, 4d$ in one of the atoms, using momentum resolved electron-ion-ion coincidence. The results illustrate that the resonant core excitation is a very efficient way of producing slow electrons at a specific site, which may cause localized radiation damage. We find also that ICD rate for $3p^{-2}4d$ is significantly lower than that for $3p^{-2}3d$.
description: 5 pages, 3 figures, 1 table
Bounds on right-handed neutrino parameters from observable leptogenesis
Creators: name: Hernandez, Pilar
name: Lopez-Pavon, Jacobo
name: Rius, Nuria
name: Sandner, Stefan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We revisit the generation of a matter-antimatter asymmetry in the minimal extension of the Standard Model with two singlet heavy neutral leptons (HNL) that can explain neutrino masses. We derive an accurate analytical approximation to the solution of the complete linearized set of kinetic equations, which exposes the non-trivial parameter dependencies in the form of parameterization-independent CP invariants. The identification of various washout regimes relevant in different regions of parameter space sheds light on the relevance of the mass corrections in the interaction rates and clarifies the correlations of baryogenesis with other observables. In particular, by requiring that the measured baryon asymmetry is reproduced, we derive robust upper or lower bounds on the HNL mixings depending on their masses, and constraints on their flavour structure, as well as on the CP-violating phases of the PMNS mixing matrix, and the amplitude of neutrinoless double-beta decay. We also find certain correlations between low and high scale CP phases. Especially emphasizing the testable part of the parameter space we demonstrate that our findings are in very good agreement with numerical results. The methods developed in this work can help in exploring more complex scenarios.
description: minor modifications + added appendix; matches published version in JHEP; numerical code made public at https://github.com/stefanmarinus/amiqs
Evolution of the phase-space density and the Jeans scale for dark matter derived from the Vlasov-Einstein equation
Creators: name: Piattella, Oliver F.
name: Rodrigues, Davi C.
name: Fabris, Júlio C.
name: Pacheco, José A. de Freitas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We discuss solutions of Vlasov-Einstein equation for collisionless dark matter particles in the context of a flat Friedmann universe. We show that, after decoupling from the primordial plasma, the dark matter phase-space density indicator Q remains constant during the expansion of the universe, prior to structure formation. This well known result is valid for non-relativistic particles and is not "observer dependent" as in solutions derived from the Vlasov-Poisson system. In the linear regime, the inclusion of velocity dispersion effects permits to define a physical Jeans length for collisionless matter as function of the primordial phase-space density indicator: λ_J = (5π/G)^(1/2)Q^(-1/3)ρ_dm^(-1/6). The comoving Jeans wavenumber at matter-radiation equality is smaller by a factor of 2-3 than the comoving wavenumber due to free-streaming, contributing to the cut-off of the density fluctuation power spectrum at the lowest scales. We discuss the physical differences between these two scales. For dark matter particles of mass equal to 200 GeV, the derived Jeans mass is 4.3 x 10^(-6) solar masses.
description: 18 pages, 2 figures. Accepted for publication in JCAP
Sphagnum increases soil’s sequestration capacity of mineral-associated organic carbon via activating metal oxides_code
Creators: name: Zhao, Yunpeng
name: Liu, Chengzhu
name: Li, Xingqi
name: Ma, Lixiao
name: Zhai, Guoqing
name: Feng, Xiaojuan
Publisher: name: figshare
Year: 2023
Subjects: Organic geochemistry
Carbon sequestration science

description: Sphagnum increases soil’s sequestration capacity of mineral-associated organic carbon via activating metal oxides_code
In der Klemme. Von der Lautstärke moderner Gestaltungssprache
Creators: name: Sommerfeld, Julia
name: Buchner, Christian
Publisher: name: Neuwerk - Zeitschrift für Designwissenschaft
Year: 2017

description: -
description: Neuwerk - Zeitschrift für Designwissenschaft, Bd. 4 (2014): Stille
Erlebnisorientierte Gestaltung. Über die Rolle der Stille in der Nutzererfahrung
Creators: name: Redaktion, Die
name: Hassenzahl, Marc
Publisher: name: Neuwerk - Zeitschrift für Designwissenschaft
Year: 2017

description: -
description: Neuwerk - Zeitschrift für Designwissenschaft, Bd. 4 (2014): Stille
A general, scale-independent description of the sound speed in neutron stars
Creators: name: Ecker, Christian
name: Rezzolla, Luciano
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Using more than a million randomly generated equations of state that satisfy theoretical and observational constraints we construct a novel, scale-independent description of the sound speed in neutron stars where the latter is expressed in a unit-cube spanning the normalised radius, $r/R$, and the mass normalized to the maximum one, $M/M_{\rm TOV}$. From this generic representation, a number of interesting and surprising results can be deduced. In particular, we find that light (heavy) stars have stiff (soft) cores and soft (stiff) outer layers, respectively, or that the maximum of the sound speed is located at the center of light stars but moves to the outer layers for stars with $M/M_{\rm TOV}\gtrsim0.7$, reaching a constant value of $c_s^2=1/2$ as $M\to M_{\rm TOV}$. We also show that the sound speed decreases below the conformal limit $c_s^2=1/3$ at the center of stars with $M=M_{\rm TOV}$. Finally, we construct an analytic expression that accurately describes the radial dependence of the sound speed as a function of the neutron-star mass, thus providing an estimate of the maximum sound speed expected in a neutron star.
description: 7 pages, 4 figures, 1 appendix, version published in ApJL
Mueller-Navelet jets at the LHC: hunting data with azimuthal distributions
Creators: name: Celiberto, Francesco Giovanni
name: Papa, Alessandro
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: By making use of the hybrid collinear and high-energy factorization, where the BFKL resummation of leading and next-to-leading energy logarithms is combined with the standard description in terms of collinear parton densities, we compare predictions for Mueller-Navelet jet rapidity and angular differential rates with data collected by CMS at $\sqrt{s} = 7$ TeV. We provide an evidence that the study of azimuthal distributions, calculated as a Fourier sum of correlation moments and embodying the high-energy signal coming from all conformal-spin modes, permits us to overcome the well-known issues emerging in the description of Mueller-Navelet final states at natural values of the renormalization scale. We come out with a clear indication that the next-to-leading BFKL description of these observables at natural scales is valid when the rapidity interval between the two jets is large, and it allows us to catch the core high-energy dynamics emerging from data.
description: 26 pages, 9 figures, 246 references, version published in Phys. Rev. D
Thermal 2-loop master spectral function at finite momentum
Creators: name: Laine, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: When considering NLO corrections to thermal particle production in the "relativistic" regime, in which the invariant mass squared of the produced particle is K^2 ~ (pi T)^2, then the production rate can be expressed as a sum of a few universal "master" spectral functions. Taking the most complicated 2-loop master as an example, a general strategy for obtaining a convergent 2-dimensional integral representation is suggested. The analysis applies both to bosonic and fermionic statistics, and shows that for this master the non-relativistic approximation is only accurate for K^2 > (8 pi T)^2, whereas the zero-momentum approximation works surprisingly well. Once the simpler masters have been similarly resolved, NLO results for quantities such as the right-handed neutrino production rate from a Standard Model plasma or the dilepton production rate from a QCD plasma can be assembled for K^2 ~ (pi T)^2.
description: 29 pages. v2: numerics improved; to appear in JHEP
Câteva consideraţii asupra arheologiei străzii în spaţiul urban medieval şi premodern al Europei Centrale şi de Est
Creators: name: Hriban, Cătălin Iulian
Publisher: name: Arheologia Moldovei
Year: 2017

description: Some Remarks Regarding the Archaeology of Street in the Medieval and Early Modern Urban Environment of Central and Eastern Europe

The street is one of the defining features of an urban setting regardless of era and geography. Consequently, the archaeology of street is an important module of any urban archaeology, and the medieval towns of Central and Eastern Europe are no exception. The street of a medieval town is defined both as structure and function and, as such, its archaeology reflects both these definitions. In terms of archaeology of medieval street, one can also add the corpus of artifacts and small finds that are inherent to any historically defined space shared by a human community for a time of significant length. This corpus of small, mobile, finds are “parasitizing” the structural and functional characteristics of the street, forming its own category of characteristics. The archaeology of the historical street, ancient as well as medieval and modern, cannot be studied comprehensively unless one considers all three groups of features together (structural, functional and parasitic). However, all archaeological features of the street vary regionally, as a consequence of geography, cultural setting and politics, but the coherence of interpretation is achieved and maintain throughout by means of separating methodologically the structural, functional and parasitic features and then analyzing them together. Any source, apart from the archaeological finds, is to be considered and utilized, cartography, narratives as well as contemporary imagery.

Keywords: cobbler, dirt lane, drainage, Great Novgorod, medieval urban structures, pavement, raised walkway, street flooring wooden street.
description: Arheologia Moldovei, Bd. 38 (2015): Arheologia Moldovei
Landau levels and snake states of pseudo-spin-1 Dirac-like electrons in gapped Lieb lattices
Creators: name: Zelaya, Kevin
name: Jakubský, Vit
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: This work reports the three-band structure associated with a Lieb lattice with arbitrary nearest and next-nearest neighbors hopping interactions. For specific configurations, the system admits a flat band located between two dispersion bands. Three inequivalent Dirac valleys are identified so that the quasi-particles are effectively described by the spin-1 Dirac-type equation. Under external homogeneous magnetic fields, the Landau levels are exactly determined as the third-order polynomial equation for the energy can be solved using Cardano's formula. It is also shown that an external anti-symmetric field promotes the existence of current-carrying states, so-called snake states, confined at the interface where the external field changes its sign.
Holographic entanglement plateaux
Creators: name: Hubeny, Veronika E.
name: Maxfield, Henry
name: Rangamani, Mukund
name: Tonni, Erik
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the entanglement entropy for holographic field theories in finite volume. We show that the Araki-Lieb inequality is saturated for large enough subregions, implying that the thermal entropy can be recovered from the knowledge of the region and its complement. We observe that this actually is forced upon us in holographic settings due to non-trivial features of the causal wedges associated with a given boundary region. In the process, we present an infinite set of extremal surfaces in Schwarzschild-AdS geometry anchored on a given entangling surface. We also offer some speculations regarding the homology constraint required for computing holographic entanglement entropy.
description: 27 pages + appendices. 12 pdf figures. 5 avi animations + 7 additional figures as ancillary files. v2: minor changes, fixed links to ancillary files. v3: minor clarifications and improvements to the discussion. published version (modulo additional clarifying footnotes)
Ceramică terra sigillata descoperită la Carsium (Hârşova, jud. Constanţa)
Creators: name: Honcu, Ştefan
name: Chiriac, Costel
Publisher: name: Arheologia Moldovei
Year: 2017

description: Terra Sigillata Pottery Uncovered at Carsium (Hârşova, Constanţa County)

In this article the authors aim to present a few fragments of terra sigillata pottery that were discovered someyears ago during the excavations at the Roman camp of Carsium. Thus, the following typological forms were identified: Conspectus 6.2.3, Dragendorff 36, Dragendorff 37 and a few fragments of plain terra sigillata.

Keywords: Carsium, fort, Danubian limes, terra sigillata pottery.
description: Arheologia Moldovei, Bd. 38 (2015): Arheologia Moldovei
Quantum hair and the string-black hole correspondence
Creators: name: Veneziano, Gabriele
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a thought experiment in which an energetic massless string probes a "stringhole" (a heavy string lying on the correspondence curve between strings and black holes) at large enough impact parameter for the regime to be under theoretical control. The corresponding, explicitly unitary, $S$-matrix turns out to be perturbatively sensitive to the microstate of the stringhole: in particular, at leading order in $l_s/b$, it depends on a projection of the stringhole's Lorentz-contracted quadrupole moment. The string-black hole correspondence is therefore violated if one assumes quantum hair to be exponentially suppressed as a function of black-hole entropy. Implications for the information paradox are briefly discussed.
description: 11 pages, no figures, typos corrected, discussion and references added, version accepted for publication in Class. and Quantum Gravity
The Quest for the Most Spherical Bubble
Creators: name: Obreschkow, Danail
name: Tinguely, Marc
name: Dorsaz, Nicolas
name: Kobel, Philippe
name: de Bosset, Aurele
name: Farhat, Mohamed
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We describe a recently realized experiment producing the most spherical cavitation bubbles today. The bubbles grow inside a liquid from a point-plasma generated by a nanosecond laser pulse. Unlike in previous studies, the laser is focussed by a parabolic mirror, resulting in a plasma of unprecedented symmetry. The ensuing bubbles are sufficiently spherical that the hydrostatic pressure gradient caused by gravity becomes the dominant source of asymmetry in the collapse and rebound of the cavitation bubbles. To avoid this natural source of asymmetry, the whole experiment is therefore performed in microgravity conditions (ESA, 53rd and 56th parabolic flight campaign). Cavitation bubbles were observed in microgravity (~0g), where their collapse and rebound remain spherical, and in normal gravity (1g) to hyper-gravity (1.8g), where a gravity-driven jet appears. Here, we describe the experimental setup and technical results, and overview the science data. A selection of high-quality shadowgraphy movies and time-resolved pressure data is published online.
description: 18 pages, 14 figures, 1 table
Interconnectivity in the Mediterranean and Pontic World during the Hellenistic and Roman Periods, în colecţia Pontica et Mediterranea, vol. III, eds. Victor Cojocaru, Altay Coşkun, Mădălina Dana
Creators: name: Honcu, Ştefan
Publisher: name: Arheologia Moldovei
Year: 2017

description: -
description: Arheologia Moldovei, Bd. 38 (2015): Arheologia Moldovei
Hunting extra dimensions in the shadow of Sgr A*
Creators: name: Banerjee, Indrani
name: Chakraborty, Sumanta
name: SenGupta, Soumitra
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the observed angular diameter of the shadow of the ultra compact object Sgr A*, favours the existence of an extra spatial dimension. This holds irrespective of the nature of the ultra compact object, i.e., whether it is a wormhole or, a black hole mimicker, but with the common feature that both of them have an extra dimensional origin. This result holds true for the mass and the distance measurements of Sgr A* using both Keck and the Gravity collaborations and whether we use the observed image or, the observed shadow diameter. In particular, the central value of the observed shadow or, the observed image diameter predicts non-zero hairs inherited from the extra dimensions.
description: v2, published version, 12 pages, 4 figures
Fourier transform spectroscopy around 3 microns with a broad difference frequency comb
Creators: name: Meek, Samuel A.
name: Poisson, Antonin
name: Guelachvili, Guy
name: Hänsch, Theodor W.
name: Picqué, Nathalie
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We characterize a new mid-infrared frequency comb generator based on difference frequency generation around 3.2 microns. High power per comb mode (>10-7 W/mode) is obtained over a broad spectral span (>700 nm). The source is used for direct absorption spectroscopy with a Michelson-based Fourier transform interferometer.
description: 6 pages, 5 figures
Maxwell's Displacement Current and the Magnetic Field between Capacitor Electrodes
Creators: name: Hyodo, Toshio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: A long-standing controversy concerning the causes of the magnetic field in and around a parallel-plate capacitor is examined. Three possible sources of contention are noted and detailed. The first is the ambiguous initial impression given by the calculation of the magnetic field using the integral form of Ampere-Maxwell's Law which incorporates the displacement current density. The second is misinterpretation of this law as a cause-effect formula. The third is insufficient recognition of the fact that the electric field in Maxwell's equations represents the sum of the well-distinguished irrotational and divergence-free fields, which are independently responsible for conservation of charge and the existence of the electromagnetic waves, respectively.
String theories on warped AdS backgrounds and integrable deformations of spin chains
Creators: name: Kameyama, Takashi
name: Yoshida, Kentaroh
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study integrable deformations of AdS/CFT by focusing upon three kinds of warped AdS_3 geometries, 1) space-like warped AdS_3, 2) time-like warped AdS_3 and 3) null warped AdS_3. These geometries are embedded into type IIB supergravity solutions and are regarded as consistent string backgrounds. By restricting the classical motion of strings on the warped AdS_3xS^1 subspace, the Landau-Lifshitz sigma models are derived by taking the fast-moving limit. The first two warped AdS_3 spaces correspond to anisotropic deformations of the sl(2) spin chain and the last one to Jordanian deformations. After taking the continuum limit of the deformed spin chains with coherent states, the resulting theories agree with the Landau-Lifshitz sigma models obtained from the string-theory side.
description: 21 pages, no figure, LaTeX, v2: typos corrected, minor comments and references added
La Producción Cerámica del Argar.pdf
Creators: name: GONZALEZ LLOPIS, NEREA
Publisher: name: figshare
Year: 2023
Subjects: Archaeology of Europe, the Mediterranean and the Levant
European history (excl. British, classical Greek and Roman)

description: realicé este trabajo de investigación durante el primer curso de mi carrera de historia y quise publicarlo para que cualquier persona que le sirva pueda leerlo y encontrar más información sobre la cultura argarica en el sudeste español. el trabajo trata de la ceramica de la cultura del Argar y espero que sea de utilidad para quien lo quiera leer.
Analysis of the $X(3960)$ and related tetraquark molecular states via the QCD sum rules
Creators: name: Xin, Qi
name: Wang, Zhi-Gang
name: Yang, Xiao-Song
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work, we study the $D\bar{D}$, $DD$, $D\bar{D}_s$, $DD_s$, $D_s\bar{D}_s$ and $D_sD_s$ tetraquark molecular states with the $J^{PC}=0^{++}$ via the QCD sum rules. The prediction $M_{D_s\bar {D}_s} = 3.98\pm0.10\, \rm{GeV}$ is in very good agreement with the experimental value $M_{X(3960)} = 3956 \pm 5\pm 10 \,\rm{MeV}$ from the LHCb collaboration and supports assigning the $X(3960)$ as the $D_s^+D_s^-$ molecular state with the $J^{PC}=0^{++}$. We take account of our previous works on the four-quark states consisting of two color-neutral clusters, and acquire the mass spectrum of the ground state hidden-charm and doubly-charm tetraquark molecular states.
description: 9 pages, 8 figures
Canis simensis Ruppell 1840
Creators: name: W. Christopher Wozencraft
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Carnivora
Hyaenidae
Canis
Canis simensis

description: Canis simensis Rüppell, 1840. Neue Wirbelt. Fauna Abyssin. Gehörig. Säugeth., 1:39, pl. 14. TYPE LOCALITY: "Wir beobachteten diesen wolfsartigen Hund in den Bergen von Simen..." [Ethiopia, mountains of Simen]. DISTRIBUTION: C Ethiopia. STATUS: U.S. ESA and IUCN - Endangered. SYNONYMS: sinus Gervais, 1855; walgie Heuglin, 1863. COMMENTS: Sometimes placed in subgenus Simenia Gray, 1868.
description: Published as part of W. Christopher Wozencraft, 1993, Order Carnivora, pp. 279-348 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 282, DOI: 10.5281/zenodo.7359191
Achieving tunable surface tension in the pseudopotential lattice Boltzmann modeling of multiphase flows
Creators: name: Li, Q.
name: Luo, K. H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this paper, we aim to address an important issue about the pseudopotential lattice Boltzmann (LB) model, which has attracted much attention as a mesoscopic model for simulating interfacial dynamics of complex fluids, but suffers from the problem that the surface tension cannot be tuned independently of the density ratio. In the literature, a multi-range potential was devised to adjust the surface tension [Sbragaglia et al., Phys. Rev. E 75, 026702 (2007)]. However, it was recently found that the density ratio of the system will be changed when the multi-range potential is employed to adjust the surface tension. A new approach is therefore proposed in the present work. The basic strategy is to add a source term to the LB equation so as to tune the surface tension of the pseudopotential LB model. The proposed approach can guarantee that the adjustment of the surface tension does not affect the mechanical stability condition of the pseudopotential LB model, and thus provides a separate control of the surface tension and the density ratio. Meanwhile, it still retains the mesoscopic feature and the computational simplicity of the pseudopotential LB model. Numerical simulations are carried out for stationary droplets, capillary waves, and droplet splashing on a thin liquid film. The numerical results demonstrate that the proposed approach is capable of achieving a tunable surface tension over a very wide range and can keep the density ratio unchanged when adjusting the surface tension.
description: 6 Figures, 5 Tables
«Εφαρμογές της Τεχνητής Νοημοσύνης στον πραγματικό κόσμο»
Creators: name: Georgiou, Harris
Publisher: name: Zenodo
Year: 2023
Subjects: Machine Learning
Data Analytics
Artificial Intelligence
Medical Imaging
Diagnostics
Mammography

description: «Εφαρμογές της Τεχνητής Νοημοσύνης στον πραγματικό κόσμο» Περιεχόμενα: Κατηγοριοποίηση προβλημάτων στον πραγματικό κόσμο / συνήθεις τρόποι επίλυσης / «δύσκολα» προβλήματα που απαιτούν προσεγγιστικές λύσεις / ο ρόλος της Μηχανικής Μάθησης και της Τεχνητής Νοημοσύνης στην επίλυσή τους / μελέτη περίπτωσης: Αυτόματη ιατρική διάγνωση στη μαστογραφία. Επίπεδο γνώσεων (από): Μαθητές Λυκείου και φοιτητές Προαπαιτούμενα: Βασικές γνώσεις Μαθηματικών και Στατιστικής
Conditions for detectability in distributed consensus-based observer networks
Creators: name: Ugrinovskii, V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The paper discusses fundamental detectability properties associated with the problem of distributed state estimation using networked observers. The main result of the paper establishes connections between detectability of the plant through measurements, observability of the node filters through interconnections, and algebraic properties of the underlying communication graph, to ensure the interconnected filtering error dynamics are stabilizable via output injection.
description: Accepted for publication in the IEEE Transactions on Automatic Control
Properties of Galactic Dark Matter: Constraints from Astronomical Observations
Creators: name: Burch, Benjamin
name: Cowsik, Ramanath
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The distributions of normal matter and of dark matter in the Galaxy are coupled to each other as they both move in the common gravitational potential. In order to fully exploit this interplay and to derive the various properties of dark matter relevant to their direct and indirect detection, we have comprehensively reviewed the astronomical observations of the spatial and velocity distributions of the components of normal matter. We then postulate that the phase-space distribution of dark matter follows a lowered-isothermal form and self-consistently solve Poisson's equation to construct several models for the spatial and velocity distributions of dark matter. In this paper, we compute the total gravitational potential of the normal and dark matter components and investigate their consistency with current observations of the rotation curve of the Galaxy and of the spatial and velocity distributions of blue horizontal-branch and blue straggler stars. Even with this demand of consistency, a large number of models with a range of parameters characterizing the dark matter distribution remain. We find the best choice of parameters, within the range of allowed values, for the surface density of the disk 55 M$_\odot$ pc$^{-2}$, are the following: the dark matter density at the Galactic center $ρ_{DM,c}\approx 100-250$ GeV cm$^{-3}$, the local dark matter density $ρ_{DM}(R_0) \approx 0.56-0.72$ GeV cm$^{-3}$, and the root-mean-speed of dark matter particles $< v_{DM}^{2}(R_0)> ^{1/2}\approx490-550$ km s$^{-1}$. We also discuss possible astronomical observations that may further limit the range of the allowed models.
description: 46 pages, 9 figures, v2 has significant revisions for clarity and additional analysis to address the uncertainty in the scale length and surface density of the Galactic disk, v3 is updated to match the manuscript accepted by ApJ
In the folds of the Central Limit Theorem: Lévy walks, large deviations and higher-order anomalous diffusion
Creators: name: Giona, Massimiliano
name: Cairoli, Andrea
name: Klages, Rainer
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: This article considers the statistical properties of Lévy walks possessing a regular long-term linear scaling of the mean square displacement with time, for which the conditions of the classical Central Limit Theorem apply. Notwithstanding this property, their higher-order moments display anomalous scaling properties, whenever the statistics of the transition times possesses power-law tails. This phenomenon is perfectly consistent with the classical Central Limit Theorem, as it involves the convergence properties towards the normal distribution. It is closely related to the property that the higher order moments of normalized sums of $N$ independent random variables possessing finite variance may deviate, for $N$ tending to infinity, to those of the normal distribution. The thermodynamic implications of these results are thoroughly analyzed by motivating the concept of higher-order anomalous diffusion.
description: 25 pages, 9 figures
Smoothing properties of inhomogeneous equations via canonical transforms
Creators: name: Ruzhansky, Michael
name: Sugimoto, Mitsuru
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47D06, 47J35, 35L03, 35S30, 35L30

description: The paper describes a new approach to global smoothing problems for inhomogeneous dispersive evolution equations based on an idea of canonical transformation. In our previous papers, we introduced such a method to show global smoothing estimates for homogeneous dispersive equations. It is remarkable that this method allows us to carry out a global microlocal reduction of equations to some low dimensional model cases. The purpose of this paper is to pursue the same treatment for inhomogeneous equations. Especially, time-global smoothing estimates for the operator $a(D_x)$ with lower order terms are the benefit of our new method.
description: 16 pages. arXiv admin note: substantial text overlap with arXiv:math/0612274
title: Social protection in a changing climate: critical perspectives on an evolving agenda
Creators: name: Tenzing, Janna Dakini
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2022

description: ‘Adaptive social protection’ (ASP) has gained much traction among climate and development practitioners in recent years. Broadly, it describes a policy agenda that seeks to maximise the contribution of social protection interventions (involving, for example, the regular transfer of cash to vulnerable populations) to climate action, particularly in lower income countries. Beyond helping people meet their basic needs and cope with increasing climate shocks and stressors, ASP can also help redress inequality and marginalisation which often are at the root of their vulnerability to climate change. As this thesis argues, however, this core characteristic of social protection is being overlooked as the ASP concept attracts more attention and is translated into practice. In my first paper, I analyse literature championing the integration of social protection and climate change adaptation, and discuss whether the transformative potential of ASP is being considered in these discussions. My second paper traces how the influence of climate discourses on social protection programmes themselves impedes progress towards social transformation, through the lens of Ethiopia’s flagship Productive Safety Net Programme (PSNP). Finally, my third paper examines the extent to which the PSNP’s geographical footprint aligns with its new ‘adaptive’ objective, by assessing how district-level coverage is associated with the spatial distribution of drought, flooding and conflict risks within the country. Together, the papers contained in this thesis offer a critical perspective on the evolving ASP agenda using qualitative (thematic and discourse analysis) and quantitative (binary logistical regression analysis) research methods. It concludes that the ASP policy agenda certainly holds promise but falls short of realising its potential as an instrument that advances the international community’s commitment to ‘leave no one behind’.
BTZ Black Hole Entropy from a Chern-Simons Matrix Model
Creators: name: Chaney, A.
name: Lu, Lei
name: Stern, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We examine a Chern-Simons matrix model which we propose as a toy model for studying the quantum nature of black holes in 2+1 gravity. Its dynamics is described by two $N\times N$ matrices, representing the two spatial coordinates. The model possesses an internal SU(N) gauge symmetry, as well as an external rotation symmetry. The latter corresponds to the rotational isometry of the BTZ solution, and does not decouple from SU(N) gauge transformations. The system contains an invariant which is quadratic in the spatial coordinates. We obtain its spectrum and degeneracy, and find that the degeneracy grows exponentially in the large $N$ limit. The usual BTZ black hole entropy formula is recovered upon identifying the quadratic invariant with the square of the black hole horizon radius. The quantum system behaves collectively as an integer (half-integer) spin particle for even (odd) $N$ under $2π$-rotations.
description: 17 pages
title: The Hawaii - California Longline Limited-entry Fishery Semi-annual Report 1 July - 31 December, 2018
Creators: name: Pacific Islands Fisheries Science Center (U.S.). Fisheries Research and Monitoring Division
Publisher: name: Pacific Islands Fisheries Science Center (U.S.). Fisheries Research and Monitoring Division
Year: 2019

description: PIFSC data report ; DR-19-042