cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sousa chinensis
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Delphinidae
Sousa
Sousa chinensis

description: Sousa chinensis (Osbeck, 1765). Reise nach Ostind. China Rostock, 1:7. TYPE LOCALITY: China, Guangdong Prov., Zhujiang Kou (mouth of Canton River). DISTRIBUTION: Coastal waters and rivers from Plettenberg Bay (South Africa) east to S. China and Queensland (Australia). COMMENT: Includes borneensis, plumbea, and lentiginosa; see Rice, 1977:13. See also Perrin, 1975, Bull. Scripps Inst. Oceanogr. Univ. Calif., 21: 1 -206, who placed malayana in Stenella attenuata, as is done here; but also see Rice, 1977:13, who included malayana in this species on the advice of P.J. H. van Bree. Zhou et al., 1979, Mar. Mamm. Inf. Oregon St. Univ., Dec., p. 46, stated that plumbea (including lentiginosa) of the Indian Ocean, may be distinct from chinensis (including borneensis) of the western Pacific. Pilleri and Gihr, 1972, Invest. Cetacea, 4: 107-162, and Pilleri and Gihr, 1973 - 1974, Invest. Cetacea, 5:95-149, considered borneensis, plumbea, and lentiginosa to be distinct species. JGM, WFP and RLB followed Rice (IWC, 1975 J. Fish. Res. Bd. Can., 32) in including these taxa in chinensis. PROTECTED STATUS: CITES - Appendix I as Sousa spp. ISIS NUMBER: 5301411002016002001 as S. chinensis. 5301411002016001001 as S. borneensis. 5301411002016003001 as S. lentiginosa. 5301411002016004001 as S. plumbea.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 295, DOI: 10.5281/zenodo.7352983
description: {"references": ["Rice, D. W. 1977. A list of the marine mammals of the world. Third ed. NOAA Technical Report, NMFS SSRF- 711: 1 - 15.", "Perrin, W. F. 1975. Variation of spotted and spinner porpoise (genus Stenella) in the eastern tropical Pacific and Hawaii. Bulletin of the Scripps Institution of Oceanography, 21: 1 - 206.", "Zhou Kai-ya, Li Yue-min, and Qian Wei-juan. 1979. [The stomach of the baiji Lipotes vexillifer.] Acta Zoologica Sinica, 25: 95 - 100 (in Chinese).", "Pilleri, G., and M. Gihr. 1972. Contribution to the knowledge of cetaceans of Pakistan with particular reference to the genera Neomeris, Sousa, Delphinus and Tursiops and description of a new Chinese porpoise (Neomeris asiaeorientalis). Investigations on Cetacea, 4: 107 - 162.", "Pilleri, G., and M. Gihr. 1973 - 74. Contribution to the knowledge of the cetaceans of southwest and monsoon Asia (Persian Gulf, Indus Delta, Malabar, Andaman Sea and Gulf of Siam). Investigations on Cetacea, 5: 95 - 149."]}
Symmetric multifield oscillons
Creators: name: van Dissel, Fabio
name: Sfakianakis, Evangelos I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Oscillons are long-lived, spatially localized field configurations, which are supported by attractive non-linearities in the scalar potential. We study oscillons comprised of multiple interacting fields, each having an identical potential with quadratic, quartic and sextic terms. We consider quartic interaction terms of either attractive or repulsive nature. In the two-field case, we construct semi-analytical oscillon profiles for different values of the potential parameters and coupling strength using the two-timing small-amplitude formalism. We use analytical and numerical techniques to explore the basin of attraction of stable oscillon solutions and show that, depending on the initial perturbation size, unstable oscillons can either completely disperse or relax to the closest stable configuration. We generalize our analysis to multifield oscillons and show that the governing equations for their shape and stability can be mapped to the ones arising in the two-field case. Finally, we study the emergence of multicomponent oscillons in one and three spatial dimensions, both numerically and through Floquet theory.
description: 46 pages, 21 figures, improvements and edits corresponding to the published version
title: A framework of urban monitoring sensors to understand air pollution from meso- to local-scale
Creators: name: Acosta Ramírez, Cammy
Publisher: name: University of Liverpool Repository
Year: 2024

description: Air pollution in urban areas is a complex phenomenon resulting from interactions between natural features in the urban boundary layer and anthropogenic activities. The dynamic features of air pollution in cities require the deployment of ground-level monitoring networks to capture the impact of meteorological variables and human mobility. This thesis presents a comparative analysis of pollution measurements from meso-scale and local-scale datasets, employing a range of methodologies from traditional time-series analysis to quasi-three-dimensional representations. Dense monitoring networks are emphasised as key to elucidate patterns that are crucial for understanding human exposure to air pollution hotspots. 

Using meso-scale datasets, the study discusses the effects of the COVID-19 pandemic in the United Kingdom, considering the periods of social restrictions in which business-as-usual temporarily stopped, impacting air pollution concentrations. Substantial declines in nitrogen oxides occured during the first national lockdown, concurrent with heightened ozone and sulphur dioxide concentrations. Reductions in nitrogen dioxide persisted 15 months into the pandemic due to decreased traffic congestion, although both gaseous and particulate pollutants remained heavily influenced by regional meteorology. Beyond immediate pandemic responses, this research examines the interplay between societal adaptation, governmental responses, and air pollution dynamics over a two-year period. Furthermore, it explores the evolving relationship between mobility and air pollution within the context of rising COVID-19 immunity.

While meso-scale analyses offer valuable insights into regional air pollution levels, this work underscores the need for high-resolution spatiotemporal data to understand air pollution at a local-scale or city level. The advantages of a dense wireless sensor network are discussed, revealing dominant patterns of particulate matter in the city of Liverpool, United Kingdom. High-resolution datasets enable the application of advanced numerical techniques such as the Proper Orthogonal Decomposition. This technique is successful unveiling elusive pollution patterns and their associations with meteorological and anthropogenic factors. 

In summary, this document explains air quality dynamics, ranging from immediate pandemic responses at a meso-scale level, to innovative analytical methodologies applied at a local scale. This work builds upon the understanding of the intricacies of pollution patterns, demonstrating the benefits of wireless sensor networks at different scales.
Cornelius J. Holtorf, Monumental Past
Creators: name: Samida, Stefanie
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Cornelius J. Holtorf, Monumental Past. The Life-histories of Megalithic Monuments in
Mecklenburg-Vorpommern (Germany), Toronto 2001.  oder CD-ROM (CAN $ 19,95). ISBN 0-7727-6305-4.
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 81 Nr. 2 (2003)
Backward difference formula: The energy technique for subdiffusion equation
Creators: name: Chen, Minghua
name: Yu, Fan
name: Zhou, Zhi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Based on the equivalence of A-stability and G-stability, the energy technique of the six-step BDF method for the heat equation has been discussed in [Akrivis, Chen, Yu, Zhou, Math. Comp., Revised]. Unfortunately, this theory is hard to extend the time-fractional PDEs. In this work, we consider three types of subdiffusion models, namely single-term, multi-term and distributed order fractional diffusion equations. We present a novel and concise stability analysis of time stepping schemes generated by $k$-step backward difference formula (BDF$k$), for approximately solving the subdiffusion equation. The analysis mainly relies on the energy technique by applying Grenander-Szegö theorem. This kind of argument has been widely used to confirm the stability of various $A$-stable schemes (e.g., $k=1,2$). However, it is not an easy task for the higher-order BDF methods, due to the loss the $A$-stability. The core object of this paper is to fill in this gap.
description: 23 pages, 4 figures
Kaufmann, Hans: Die vorgeschichtliche Besiedlung des Orlagaues
Creators: name: Niquet, Franz
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Kaufmann, Hans: Die vorgeschichtliche Besiedlung des Orlagaues. Veröffentlichungen des Landesmuseums f. Vorgeschichte Dresden, Band 8 (Katalog) und 10 (Text). Katalog, Leipzig 1959, 311 Seiten, 59 Strichzeichnungen, Karte zur vorgeschichtlichen Besiedlung des Orlagaues, ebenso Tafelband mit 71 Tafeln in Strichzeichnungen. Textband, Berlin 1963, 151 Seiten, 15 Streichzeichnungen, (11 Fundkarten)
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 36 (1967): Nachrichten aus Niedersachsens Urgeschichte
Linearbandkeramik vom Typ Flomborn aus Bischoffingen und ein Kindergrab des frühen Jungneolithikums aus dem Breisgau
Creators: name: Matuschik, Irenäus
Publisher: name: Archäologische Nachrichten aus Baden
Year: 2019

description: Archäologische Nachrichten aus Baden, Bd. 67 (2003): Archäologische Nachrichten aus Baden
The Emerging Field of Signal Processing on Graphs: Extending High-Dimensional Data Analysis to Networks and Other Irregular Domains
Creators: name: Shuman, David I
name: Narang, Sunil K.
name: Frossard, Pascal
name: Ortega, Antonio
name: Vandergheynst, Pierre
Publisher: name: arXiv
Year: 2012
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: In applications such as social, energy, transportation, sensor, and neuronal networks, high-dimensional data naturally reside on the vertices of weighted graphs. The emerging field of signal processing on graphs merges algebraic and spectral graph theoretic concepts with computational harmonic analysis to process such signals on graphs. In this tutorial overview, we outline the main challenges of the area, discuss different ways to define graph spectral domains, which are the analogues to the classical frequency domain, and highlight the importance of incorporating the irregular structures of graph data domains when processing signals on graphs. We then review methods to generalize fundamental operations such as filtering, translation, modulation, dilation, and downsampling to the graph setting, and survey the localized, multiscale transforms that have been proposed to efficiently extract information from high-dimensional data on graphs. We conclude with a brief discussion of open issues and possible extensions.
description: To appear in the IEEE Signal Processing Magazine
Discovery of a Flat-Spectrum Radio Nucleus in NGC 3115
Creators: name: Wrobel, J. M.
name: Nyland, K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The early-type galaxy NGC 3115, at a distance of 10.2 Mpc, hosts the nearest billion-solar-mass black hole. Wong et al. recently inferred a substantial Bondi accretion rate near the black hole. Bondi-like accretion is thought to fuel outflows, which can be traced through their radio emission. This paper reports the discovery of a radio nucleus in NGC 3115, with a diameter less that 0.17 arcsec (8.4 pc), a luminosity at 8.5 GHz of 3.1 x 10^35 ergs/s and a flat spectrum (alpha = -0.23+/-0.20, flux density ~ frequency^alpha). The radio source coincides with the galaxy's photocenter and candidate X-ray nucleus. The emission is radio-loud, suggesting the presence of an outflow on scales less than 10 pc. On such scales, the Bondi accretion could be impeded by heating due to disruption of the outflow.
description: 4 pages; 1 figure; emulateapj.cls; to appear in AJ
An Algebraic Theory of Complexity for Discrete Optimisation
Creators: name: Cohen, David A.
name: Cooper, Martin C.
name: Creed, Paidi
name: Jeavons, Peter G.
name: Zivny, Stanislav
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computational Complexity (cs.CC)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences
subject: F.2.0

description: Discrete optimisation problems arise in many different areas and are studied under many different names. In many such problems the quantity to be optimised can be expressed as a sum of functions of a restricted form. Here we present a unifying theory of complexity for problems of this kind. We show that the complexity of a finite-domain discrete optimisation problem is determined by certain algebraic properties of the objective function, which we call weighted polymorphisms. We define a Galois connection between sets of rational-valued functions and sets of weighted polymorphisms and show how the closed sets of this Galois connection can be characterised. These results provide a new approach to studying the complexity of discrete optimisation. We use this approach to identify certain maximal tractable subproblems of the general problem, and hence derive a complete classification of complexity for the Boolean case.
description: 26 pages, full version of three conference papers: CP'06, MFCS'11, and CP'11
Spin coherence lifetime extension in Tm$^{3+}$:YAG through dynamical decoupling
Creators: name: Pascual-Winter, M. F.
name: Tongning, R. -C.
name: Chanelière, T.
name: Gouët, J. -L. Le
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report on spin coherence lifetime extension on Tm$^{3+}$:YAG obtained through dynamically decoupling the thulium spins from their magnetic environment. The coherence lifetime reached with a Carr-Purcell-Meiboom-Gill sequence revealed a 450-fold extension [$\sim$$(230 \pm 30)$ ms] with respect to previously measured values. Comparison to a simple theoretical model allowed us to estimate the correlation time of the fluctuations of the ground level transition frequency to $(172 \pm 30)$ $μ$s at 1.7 K. For attaining efficient decoupling sequences, we developed a strategy inspired by the \emph{zero-first-order Zeeman} effect to minimize the large inhomogeneous broadening of the ground level spin transition.
description: 10 pages, 7 figures
Sousa teuszii
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Delphinidae
Sousa
Sousa teuszii

description: Sousa teuszii (Kukenthal, 1892). Zool. Jahrb. Syst., 6:442. TYPE LOCALITY: Cameroun, Cameroun Oriental, Bay of Warships, near Douala. DISTRIBUTION: Coastal waters in river mouths from Mauritania to N. Angola. COMMENT: Reviewed by Pilleri and Gihr, 1972, Invest. Cetacea, 4: 107-162. PROTECTED STATUS: CITES - Appendix I as Sousa spp. ISIS NUMBER: 5301411002016005001 as S. teuszi (sic).
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 295, DOI: 10.5281/zenodo.7352983
description: {"references": ["Pilleri, G., and M. Gihr. 1972. Contribution to the knowledge of cetaceans of Pakistan with particular reference to the genera Neomeris, Sousa, Delphinus and Tursiops and description of a new Chinese porpoise (Neomeris asiaeorientalis). Investigations on Cetacea, 4: 107 - 162."]}
Notes on constructions of knots with the same trace
Creators: name: Tagami, Keiji
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: The $m$-trace of a knot is the $4$-manifold obtained from $\mathbf{B}^4$ by attaching a $2$-handle along the knot with $m$-framing. In 2015, Abe, Jong, Luecke and Osoinach introduced a technique to construct infinitely many knots with the same $m$-trace, which is called the operation $(\ast m)$. In this paper, we prove that their technique can be explained in terms of Gompf and Miyazaki's dualizable pattern. In addition, we show that the family of knots admitting the same $4$-surgery given by Teragaito can be explained by the operation $(\ast m)$.
description: 12 pages, 7 figures
Noncommutative Field Theory: Numerical Analysis with the Fuzzy Disc
Creators: name: Lizzi, Fedele
name: Spisso, Bernardino
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The fuzzy disc is a discretization of the algebra of functions on the two dimensional disc using finite matrices which preserves the action of the rotation group. We define a $φ^4$ scalar field theory on it and analyze numerically for three different limits for the rank of the matrix going to infinity. The numerical simulations reveal three different phases: uniform and disordered phases already the present in the commutative scalar field theory and a nonuniform ordered phase as a noncommutative effects. We have computed the transition curves between phases and their scaling. This is in agreement with studies on the fuzzy sphere, although the speed of convergence for the disc seems to be better. We have performed also three the limits for the theory in the cases of the theory going to the commutative plane or commutative disc. In this case the theory behaves differently, showing the intimate relationship between the nonuniform phase and noncommutative geometry.
description: Typos corrected. Some references added
Lifting generic maps to embeddings. Triangulation and smoothing
Creators: name: Melikhov, Sergey A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We show that if a non-degenerate PL map $f:N\to M$ lifts to a topological embedding in $M\times\mathbb R^k$ then it lifts to a PL embedding in there. We also show that if a stable smooth map $N^n\to M^m$, $m\ge n$, lifts to a topological embedding in $M\times\mathbb R$, then it lifts to a smooth embedding in there.
description: 18 pages. In older versions, some content has moved between this paper and the companion paper arXiv:1711.03518
Sharply 2-transitive linear groups
Creators: name: Glasner, Yair
name: Gulko, Dennis D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Geometry (math.AG)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 20B22, 12K05, 20G15

description: A group G is sharply 2-transitive if it admits a faithful permutation representation that is transitive and free on pairs of distinct points. Conjecturally, for all such groups there exists a near-field N (i.e. a skew field that is distributive only from the left) such that G is isomorphic to the semidirect product of the multiplicative and additive groups of N. This is well known in the finite case. We prove this conjecture when G < GL(n,F) is a linear group. Here we have to assume that both the characteristic of the field F and the permutational characteristic of the group G (see Definition 2.1) are not equal to 2.
description: 8 pages, revision matches accepted version
Stenella Gray 1866
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Delphinidae
Stenella

description: Stenella Gray, 1866. Proc. Zool. Soc. Lond., 1866:213. COMMENT: Reviewed, in part, by Perrin, 1975, Bull. Scripps Inst. Oceanogr. Univ. Calif., 21: 1-206. PROTECTED STATUS: CITES - Appendix II as Order Cetacea. ISIS NUMBER: 5301411002013000000.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 295, DOI: 10.5281/zenodo.7352983
description: {"references": ["Perrin, W. F. 1975. Variation of spotted and spinner porpoise (genus Stenella) in the eastern tropical Pacific and Hawaii. Bulletin of the Scripps Institution of Oceanography, 21: 1 - 206."]}
A small subset of normal modes mimics the properties of dynamical heterogeneity in a model supercooled liquid
Creators: name: Hocky, Glen M.
name: Reichman, David R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this work, we study the nature of transitions between inherent structures of a two-dimensional model supercooled liquid. We demonstrate that these transitions occur predominately along a small number of directions on the energy landscape. Moreover, we show that the number of such directions decreases as the temperature of the liquid is decreased in the mildly supercooled regime, in concert with earlier studies on an athermal jamming system. We show that this decrease happens in parallel with a change in character of the transitions as dynamics in the system become more heterogeneous and localized. We investigate the origin of these trends, which suggests interesting connections between jamming and thermal glassy phenomena.
description: 9 pages, 11 figures, 1 table. Appears in the "Special Topic Issue on the Glass Transition"
Electromagnetic Structure of the Pion
Creators: name: Mello, Clayton S.
name: Filho, José P. Cruz
name: da Silva, Edson O.
name: de Melo, J. P. B. C.
name: El-Bennich, Bruno
name: Filho, Victo S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work, we analyze the electromagnetic structure of the pion. We calculate its electromagnetic radius and electromagnetic form factor in low and intermediate momentum range. Such observables are determined by means of a theoretical model that takes into account the constituent quark and antiquark of the pion within the formalism of light-front field theory. In particular, we consider a nonsymmetrical vertex in this model, with which we calculate the electromagnetic form factor of the pion in an optimized way, so that we obtain a value closer to the experimental charge radius of the pion. The theoretical calculations are also compared with the most recent experimental data involving the pion electromagnetic form factor and the results show very good agreement.
description: Paper with 4 pages, 1 figure, presented in XII HADRON PHYSICS Conference - to appear in AIP Conference Proceedings
Archäologische Denkmalpflege im Bezirk Trier : Aufgaben, Instrumente, Praxis und Perspektiven
Creators: name: Nortmann, Hans
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: [nicht vorhanden]
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 46 (2014): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
A characterization of alternating links in thickened surfaces
Creators: name: Boden, Hans U.
name: Karimi, Homayun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57K10, 57K12

description: We use an extension of Gordon-Litherland pairing to thickened surfaces to give a topological characterization of alternating links in thickened surfaces. If $Σ$ is a closed oriented surface and $F$ is a compact unoriented surface in $Σ\times I$, then the Gordon-Litherland pairing defines a symmetric bilinear pairing on the first homology of $F$. A compact surface in $Σ\times I$ is called definite if its Gordon-Litherland pairing is a definite form. We prove that a non-split link $L$ in a thickened surface is alternating if and only if it bounds two definite surfaces of opposite sign.
description: 19 pages, 9 figures. Revision includes new proofs of Lemmas 6 and 18, a slight improvement to Theorem 8, the addition of Corollary 20, and many other minor changes. This version is to appear in Proc. Roy. Soc. Edinburgh Sect. A
Ultraviolet and X-ray variability of NGC 4051 over 45 days with XMM-Newton and Swift
Creators: name: Alston, W. N.
name: Vaughan, S.
name: Uttley, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We analyse 15 XMM-Newton observations of the Seyfert galaxy NGC 4051 obtained over 45 days to determine the ultraviolet (UV) light curve variability characteristics and search for correlated UV/X-ray emission. The UV light curve shows variability on all time scales, however with lower fractional rms than the 0.2-10 keV X-rays. On days-weeks timescales the fractional variability of the UV is Fvar ~ 8%, and on short (~ hours) timescales Fvar ~ 2%. The within-observation excess variance in 4 of the 15 UV observations was found be much higher than the remaining 11. This was caused by large systematic uncertainties in the count rate masking the intrinsic source variance. For the four "good" observations we fit an unbroken power-law model to the UV power spectra with slope -2.0 +/- 0.5. We compute the UV/X-ray Cross-correlation function for the "good" observations and find a correlation of ~ 0.5 at time lag of ~ 3 ks, where the UV lags the X-rays. We also compute for the first time the UV/X-ray Cross-spectrum in the range 0-28.5 ks, and find a low coherence and an average time lag of ~ 3 ks. Combining the 15 XMM-Newton and the Swift observations we compute the DCF over +/-40 days but are unable to recover a significant correlation. The magnitude and direction of the lag estimate from the 4 "good" observations indicates a scenario where ~ 25 % of the UV variance is caused by thermal reprocessing of the incident X-ray emission.
description: 11 pages, 8 figures. Accepted for publication in MNRAS
Brane Realization of Nambu Monopoles and Electroweak Strings
Creators: name: Eto, Minoru
name: Konishi, Kenichi
name: Nitta, Muneto
name: Ookouchi, Yutaka
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the standard model, the electroweak Z-string can end on a Nambu monopole, whose mass is calculated to be 689 GeV from the current precise experimental data assuming the new particle with mass 125 GeV to be the Higgs boson. We study an extension of the standard model with additional singlet and triplet Higgs fields in the framework of N=1 supersymmetric field theory by using a D-brane configuration in type IIA string theory. We construct a D-brane configuration describing the electroweak symmetry breaking, and find a single D2-brane configuration describing a Z-string and a Nambu monopole attached by a Z-string in the standard model without an adjoint Higgs field. We further find a single D2-brane configuration describing a composite of a 't Hooft-Polyakov monopole and a Nambu monopole attached by a Z-string in an extended standard model with an adjoint Higgs field. We compute the binding energy of the 't Hooft-Polyakov and Nambu monopoles by solving a minimal surface area of a D2-brane.
description: 25 pages, 10 figures, v2: references added, v3:published version
Margin of Victory in Tournaments: Structural and Experimental Results
Creators: name: Brill, Markus
name: Schmidt-Kraepelin, Ulrike
name: Suksompong, Warut
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: Tournament solutions are standard tools for identifying winners based on pairwise comparisons between competing alternatives. The recently studied notion of margin of victory (MoV) offers a general method for refining the winner set of any given tournament solution, thereby increasing the discriminative power of the solution. In this paper, we reveal a number of structural insights on the MoV by investigating fundamental properties such as monotonicity and consistency with respect to the covering relation. Furthermore, we provide experimental evidence on the extent to which the MoV notion refines winner sets in tournaments generated according to various stochastic models.
description: Appears in the 35th AAAI Conference on Artificial Intelligence (AAAI), 2021
Urgeschichtliche Fundchronik der Umgebung der Stadt Osnabrück von 1950-1966
Creators: name: Bauer, A.
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 36 (1967): Nachrichten aus Niedersachsens Urgeschichte
The Electromagnetic Form Factor of the Kaon in the Light-Front Approach
Creators: name: da Silva, Edson O.
name: de Melo, J. P. B. C.
name: Filho, Victo S.
name: El-Bennich, Bruno
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The kaon electromagnetic form factor is calculated within a light-front constituent quark model (LFCQM). The electromagnetic components of the current are extracted from the Feynman triangle diagram within the light-front approach. We also obtain the electroweak decay constant and the charge radius for the kaon in the light-front approach. In this work, the kaon observables are calculated and a fairly good agreement is obtained with a very higher accuracy when compared with the experimental data.
description: Paper with 4 pages, 1 figure, reference: XII HADRON PHYSICS Conference - to appear in AIP Conference Proceedings
Heavy Quark Production and Energy Loss
Creators: name: Horowitz, W. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Heavy flavor research is a vigorous and active topic in high-energy QCD physics. Comparing theoretical predictions to data as a function of flavor provides a unique opportunity to tease out properties of quark-gluon plasma. We explicitly demonstrate this utility with energy loss predictions based on the assumption of 1) a weakly-coupled plasma weakly coupled to a high-pT probe using pQCD and 2) a strongly-coupled plasma strongly coupled to a high-pT probe using AdS/CFT; we find that while the former enjoys broad qualitative agreement with data, it is difficult to reconcile the latter with experimental measurements.
description: 8 pages, 5 figures. Proceedings for Quark Matter 2012
Bodendenkmalpflege im Niedersächsischen Verwaltungsbezirk Oldenburg
Creators: name: Steffens, Heino-Gerd
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 36 (1967): Nachrichten aus Niedersachsens Urgeschichte
Stenella attenuata
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Delphinidae
Stenella
Stenella attenuata

description: Stenella attenuata (Gray, 1846). Zool. Voy. H.M.S. "Erebus” and "Terror,” 1:44. TYPE LOCALITY: Unknown. DISTRIBUTION: Tropical waters of Indian, Pacific, and Atlantic Oceans. COMMENT: Includes frontalis, graffmani, and dubia; see Rice, 1977:8. Includes malayana; see Perrin, 1975, Bull. Scripps Inst. Oceanogr. Univ. Calif., 21: 1 -206, but also see Rice, 1977:13. The taxonomy of the spotted dolphins (frontalis, dubia, attenuata, and plagiodon) remains to be resolved (WFP). The presently recognized nominal forms (frontalis, attenuata, and plagiodon) will probably prove to be two species of spotted dolphins; frontalis is probably conspecific with either attenuata (JGM), or plagiodon (WFP); dubia (including asthenops and crotaphyscus), used by Hershkovitz, 1966:31, may belong to either of the two probable species (WFP and RLB; DWR; JGM). Hershkovitz, 1966:31, argued that dubia is a prior name for attenuata. See Hall, 1981:882-883, for additional discussion. PROTECTED STATUS: CITES - Appendix II as Order Cetacea. ISIS NUMBER: 5301411002013002001 as S. dubia.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 296, DOI: 10.5281/zenodo.7352983
description: {"references": ["Rice, D. W. 1977. A list of the marine mammals of the world. Third ed. NOAA Technical Report, NMFS SSRF- 711: 1 - 15.", "Perrin, W. F. 1975. Variation of spotted and spinner porpoise (genus Stenella) in the eastern tropical Pacific and Hawaii. Bulletin of the Scripps Institution of Oceanography, 21: 1 - 206.", "Hall, E. R. 1981. The mammals of North America. Second ed. John Wiley and Sons, New York, 1: 1 - 600 + 90, 2: 601 - 1181 + 90."]}
Pattern Formation on Networks with Reactions: A Continuous Time Random Walk Approach
Creators: name: Angstmann, Christopher N.
name: Donnelly, Isaac C.
name: Henry, Bruce I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35K57, 60G22, 82C41, 60K35, 60J60

description: We derive the generalized master equation for reaction-diffusion on networks from an underlying stochastic process, the continuous time random walk (CTRW). The non-trivial incorporation of the reaction process into the CTRW is achieved by splitting the derivation into two stages. The reactions are treated as birth-death processes and the first stage of the derivation is at the single particle level, taking into account the death process, whilst the second stage considers an ensemble of these particles including the birth process. Using this model we have investigated different types of pattern formation across the vertices on a range of networks. Importantly, the CTRW defines the Laplacian operator on the network in a non \emph{ad-hoc} manner and the pattern formation depends on the structure of this Laplacian. Here we focus attention on CTRWs with exponential waiting times for two cases; one in which the rate parameter is constant for all vertices and the other where the rate parameter is proportional to the vertex degree. This results in nonsymmetric and symmetric CTRW Laplacians respectively. In the case of symmetric Laplacians, pattern formation follows from the Turing instability. However in nonsymmetric Laplacians, pattern formation may be possible with or without a Turing instability.
description: 27 pages, 10 figures
Learning developmental mode dynamics from single-cell trajectories
Creators: name: Romeo, Nicolas
name: Hastewell, Alasdair
name: Mietke, Alexander
name: Dunkel, Jörn
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Embryogenesis is a multiscale process during which developmental symmetry breaking transitions give rise to complex multicellular organisms. Recent advances in high-resolution live-cell microscopy provide unprecedented insights into the collective cell dynamics at various stages of embryonic development. This rapid experimental progress poses the theoretical challenge of translating high-dimensional imaging data into predictive low-dimensional models that capture the essential ordering principles governing developmental cell migration in complex geometries. Here, we combine mode decomposition ideas that have proved successful in condensed matter physics and turbulence theory with recent advances in sparse dynamical systems inference to realize a computational framework for learning quantitative continuum models from single-cell imaging data. Considering pan-embryo cell migration during early gastrulation in zebrafish as a widely studied example, we show how cell trajectory data on a curved surface can be coarse-grained and compressed with suitable harmonic basis functions. The resulting low-dimensional representation of the collective cell dynamics enables a compact characterization of developmental symmetry breaking and the direct inference of an interpretable hydrodynamic model, which reveals similarities between pan-embryo cell migration and active Brownian particle dynamics on curved surfaces. Due to its generic conceptual foundation, we expect that mode-based model learning can help advance the quantitative biophysical understanding of a wide range of developmental structure formation processes.
description: Active Brownian particle data and analysis added, inference framework improved, 8 figures and 1 Appendix added, Main text and appendices extended main text: 19 pages, 4 main figures, 6 figure supplements; Appendix: 15 pages, 8 figures
Formation of millisecond pulsars - NS initial mass and EOS constraints
Creators: name: Bejger, M.
name: Fortin, M.
name: Haensel, P.
name: Zdunik, J. L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recent measurement of a high millisecond pulsar mass (PSR J1614-2230, 1.97+-0.04 Msun) compared with the low mass of PSR J0751+1807 (1.26+-0.14 Msun) indicates a large span of masses of recycled pulsars and suggests a broad range of neutron stars masses at birth. We aim at reconstructing the pre-accretion masses for these pulsars while taking into account interaction of the magnetic field with a thin accretion disk, magnetic field decay and relativistic 2D solutions for stellar configurations for a set of equations of state. We briefly discuss the evolutionary scenarios leading to the formation of these neutron stars and study the influence of the equation of state.
description: 4 pages, 2 figures; proceedings of IAUS 290 "Feeding Compact Objects: Accretion on All Scales", C. M. Zhang, T. Belloni, M. Mendez & S. N. Zhang (eds.)
One-dimensional Van Hove polaritons
Creators: name: Arnardottir, K. B.
name: Kyriienko, O.
name: Portnoi, M. E.
name: Shelykh, I. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study the light-matter coupling of microcavity photons and an interband transition in a one-dimensional (1D) nanowire. Due to the Van Hove singularity in the density of states, resulting in a resonant character of the absorption line, the achievement of strong coupling becomes possible even without the formation of a bound state of an electron and a hole. The calculated absorption in the system and corresponding energy spectrum reveal anticrossing behavior characteristic of the formation of polariton modes. In contrast to the case of conventional exciton polaritons, the formation of 1D Van Hove polaritons will not be restricted to low temperatures and can be realized in any system with a singularity in the density of states.
description: 6 pages, 6 figures
Minimum and terminal velocities in projectile motion
Creators: name: Miranda, E. N.
name: Nikolskaya, S.
name: Riba, R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The motion of a projectile with horizontal initial velocity V0, moving under the action of the gravitational field and a drag force is studied analytically. As it is well known, the projectile reaches a terminal velocity Vterm. There is a curious result concerning the minimum speed Vmin; it turns out that the minimum velocity is lower than the terminal one if V0 > Vterm and is lower than the initial one if V0 < Vterm. These results show that the velocity is not a monotonous function. If the initial speed is not horizontal, there is an angle range where the velocity shows the same behavior mentioned previously. Out of that range, the volocity is a monotonous function. These results come out from numerical simulations.
A short proof of Host's equidistribution theorem
Creators: name: Hochman, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37E10, 37A46, 37C45, 28A80, 11J71

description: This note contains a new proof of Host's equidistribution theorem for multiplicatively independent endomorphisms of $\mathbb{R}/\mathbb{Z}$. The method is a simplified version of our upcoming work on equidistribution under toral automorphisms and is related to the argument in [HochmanShmerkin2015], but avoids the use of the scenery flow and of Marstrand's projection theorem, using instead a direct Fourier argument to establish smoothness of the limit measure.
description: 10 pages, V2: Minor corrections, added missing phase in Eq (4.3) and later on
Biomedical Convergence Facilitated by the Emergence of Technological and Informatic Capabilities
Creators: name: Yang, Dong
name: Pavlidis, Ioannis
name: Petersen, Alexander M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: We analyzed Medical Subject Headings (MeSH) from 21.6 million research articles indexed by PubMed to map this vast space of entities and their relations, providing insights into the origins and future of biomedical convergence. Detailed analysis of MeSH co-occurrence networks identifies three robust knowledge clusters: the vast universe of microscopic biological entities and structures; systems, disease and diagnostics; and emergent biological and social phenomena underlying the complex problems driving the health, behavioral and brain science frontiers. These domains integrated from the 1990s onward by way of technological and informatic capabilities that introduced highly controllable, scalable and permutable research processes and invaluable imaging techniques for illuminating fundamental structure-function-behavior questions. Article-level analysis confirms a positive relationship between team size and topical diversity, and shows convergence to be increasing in prominence but with recent saturation. Together, our results invite additional policy support for cross-disciplinary team assembly to harness transdisciplinary convergence.
description: 12 pages, 4 figures; 8 pages of Supplementary Information
title: Bericht der Römisch-Germanischen Kommission, Bd. 5 1909(1911): Bericht der Römisch-Germanischen Kommission
title: Bd. 5 1909(1911): Bericht der Römisch-Germanischen Kommission
titleType: AlternativeTitle
Creators: name: Bericht Der Römisch-Germanischen Kommission
Publisher: name: Bericht der Römisch-Germanischen Kommission
Year: 2015

description: Titel
Inhalts-Verzeichnis
Bericht über die Tätigkeit der Römisch-Germanischen Kommission im Jahre 1909...1-2
Museographie für das Jahr 1908/9...3-72
Zur Geschichte der frührömischen Okkupation Germaniens...73-88
I. Orts- und Sachregister...89-92
II. Literatur...93-96
Conservative parametric optimality and the ridge method for tame min-max problems
Creators: name: Pauwels, Edouard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We study the ridge method for min-max problems, and investigate its convergence without any convexity, differentiability or qualification assumption. The central issue is to determine whether the ''parametric optimality formula'' provides a conservative field, a notion of generalized derivative well suited for optimization. The answer to this question is positive in a semi-algebraic, and more generally definable, context. The proof involves a new characterization of definable conservative fields which is of independent interest. As a consequence, the ridge method applied to definable objectives is proved to have a minimizing behavior and to converge to a set of equilibria which satisfy an optimality condition. Definability is key to our proof: we show that for a more general class of nonsmooth functions, conservativity of the parametric optimality formula may fail, resulting in an absurd behavior of the ridge method.
MOCCA code for star cluster simulations - I. Blue Stragglers, first results
Creators: name: Hypki, Arkadiusz
name: Giersz, Mirek
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We introduce an improved code for simulations of star clusters, called MOCCA. It combines the Monte Carlo method for star cluster evolution and the Fewbody code to perform scattering experiments. The Fewbody was added in order to track more precisely dynamical interactions between objects which can lead to creations of various exotic objects observed in the star clusters, like Blue Stragglers Stars (BSS). The MOCCA code is currently one of the most advanced codes for simulating real size star clusters. It follows the star cluster evolution closely to N-body codes but is much faster. We show that the MOCCA code is able to follow the evolution of BSS with details. It is a suitable tool to perform full scale evolution of real star clusters and detail comparison with observations of exotic star cluster objects like BSS. This paper is the first one of the series of papers about properties of BSS in star clusters. This type of stars is particularly interesting today, because by studying them one can get important constrains on a link between the stellar and dynamical evolution of star clusters. We discuss here first results concerning BSS for an arbitrary chosen test model. We investigate properties of BSS which characterize different channels of formation like masses, semi-major axes, eccentricities, and orbital periods. We show how BSS from different channels change their types, and discuss initial and final positions of BSS, their bimodal distribution in the star cluster, lifetimes and more.
description: 25 pages, 25 figures
title: Bericht der Römisch-Germanischen Kommission, Bd. 26 1936(1938): Bericht der Römisch-Germanischen Kommission
title: Bd. 26 1936(1938): Bericht der Römisch-Germanischen Kommission
titleType: AlternativeTitle
Creators: name: Bericht Der Römisch-Germanischen Kommission
Publisher: name: Bericht der Römisch-Germanischen Kommission
Year: 2016

description: Titel
Inhaltsverzeichnis
Bericht über die Tätigkeit der Römisch-Germanischen Kommission vom 1. April 1936 bis 31. März 1937...1-4
Molluskenkunde und Vorgeschichte...5-23
Römische Wasserleitungen in den Rheinlanden...24-157