cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the Efficiency of K-Means Clustering: Evaluation, Optimization, and Algorithm Selection
Creators: name: Wang, Sheng
name: Sun, Yuan
name: Bao, Zhifeng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Databases (cs.DB)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: H.2.8

description: This paper presents a thorough evaluation of the existing methods that accelerate Lloyd's algorithm for fast k-means clustering. To do so, we analyze the pruning mechanisms of existing methods, and summarize their common pipeline into a unified evaluation framework UniK. UniK embraces a class of well-known methods and enables a fine-grained performance breakdown. Within UniK, we thoroughly evaluate the pros and cons of existing methods using multiple performance metrics on a number of datasets. Furthermore, we derive an optimized algorithm over UniK, which effectively hybridizes multiple existing methods for more aggressive pruning. To take this further, we investigate whether the most efficient method for a given clustering task can be automatically selected by machine learning, to benefit practitioners and researchers.
description: accepted to VLDB 2021; this is a technical report with five-page appendix
Toward dynamical understanding of the diquarks, pentaquarks and dibaryons
Creators: name: Shuryak, E. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: QCD instantons are known to produce deeply bound diquarks. We study whether it may be used as building blocks in the formation of multiquark states, in particular pentaquarks and dibaryons. A simple model is presented in which the lowest scalar diquark (and possibly the tensor one) can be treated as an independent ``body'', with the same color and (approximately) the same mass as a constituent (anti)quark. In it a new symmetry exists between states with the same number of ``bodies'' but different number of quarks appear, in particular the 3-``body'' pentaquarks can be naturally related to some excited baryons. The limitations of this model are seen from the fact that it leads to light dibaryon $H$. Another reported work is based on a calculation of a large set of correlation functions for nonlocal operators with 4 to 6 light quarks in the Random Instanton Liquid Model (RILM). The effective interaction between diquarks is studied and found to posses a strongly {\em repulsive core}, due to the Pauli principle for quark zero modes.
description: A talk at Hadronic Physics Group meeting at Fermilab, Nov.2004
Supernova Explosions in Accretion Disks in Active Galactic Nuclei: Three-Dimensional Models
Creators: name: Moranchel-Basurto, A.
name: Sánchez-salcedo, F. J.
name: Chametla, Raúl O.
name: Velázquez, P. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Supernova (SN) explosions can potentially affect the structure and evolution of circumnuclear disks in active galactic nuclei (AGN). Some previous studies have suggested that a relatively low rate of SN explosions can provide an effective value of alpha viscosity between 0.1 and 1 in AGN accretion disks within 1 pc scale. In order to test this possibility, we provide some analytic scalings of the evolution of a SN remnant embedded in a differentially rotating smooth disk. We calibrate our estimates using three-dimensional hydrodynamical simulations where the gas is modeled as adiabatic with index $γ$. Our simulations are suited to include the fact that a fraction of the momentum injected by the SN escapes from the disk into the corona. Based on these results, we calculate the contribution of SN explosions to the effective alpha viscosity, denoted by $α_{SNe}$, in a model AGN accretion disk, where accretion is driven by the local viscosity $α$. We find that for AGN galaxies with a central black hole of $~ 10^8M_{\cdot}$ and a disk with viscosity $α=0.1$, the contribution of SN explosions may be as large as $α_{SNe} \simeq 0.02$, provided that $α\gtrsim 1.1$. On the other hand, in the momentum conservation limit, which is valid when the push by the internal pressure of the SN remnant is negligible, we find $α_SNe \lesssim 6\times10^{-4}$.
description: 15 pages, 16 figures. Accepted for publication in ApJ
Dielectric quantification of conductivity limitations due to nanofiller size in conductive powders and nanocomposites
Creators: name: Huijbregts, L. J.
name: Brom, H. B.
name: Brokken-Zijp, J. C. M.
name: Kleinjan, W. E.
name: Michels, M. A. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Conducting submicron particles are well-suited as filler particles in non-conducting polymer matrices to obtain a conducting composite with a low percolation threshold. Going to nanometer-sized filler particles imposes a restriction to the conductivity of the composite, due to the reduction of the density of states involved in the hopping process between the particles, compared to its value within the crystallites. We show how those microscopic parameters that govern the charge-transport processes across many decades of length scales, can accurately and consistently be determined by a range of dielectric-spectroscopy techniques from a few Hz to infrared frequencies. The method, which is suited for a variety of systems with restricted geometries, is applied to densely packed 7-nm-sized tin-oxide crystalline particles with various degree of antimony doping and the quantitative results unambiguously show the role of the nanocrystal charging energy in limiting the hopping process.
description: 6 pages, 4 figures
Thermodynamic approach to electric quadrupole moments
Creators: name: Daido, Akito
name: Shitade, Atsuo
name: Yanase, Youichi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Higher-rank electric/magnetic multipole moments are attracting attention these days as candidate order parameters for exotic material phases. However, quantum-mechanical formulation of those multipole moments is still an ongoing issue. In this paper, we propose a thermodynamic definition of electric quadrupole moments as a measure of symmetry breaking, following previous studies of orbital magnetic dipole moments and magnetic quadrupole moments. The obtained formulas are illustrated with a model of orbital-ordered nematic phases of iron-based superconductors.
description: 7+8 pages, 4 figures
Integrated Light Tidal Features Across the Mass Spectrum
Creators: name: Kado-Fong, Erin
Publisher: name: Zenodo
Year: 2019

description: Observations of tidal features around external galaxies provide a window into the infall orbit, mass, and stellar populations of the satellite progenitors that form these extended features. The Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) will cover more than 1400 sq. deg of the sky in five broadband filters (grizy) down to i~26 mag with a median i band seeing of 0.54”, offering an unprecedented view of the low surface brightness universe that is complementary to deep, targeted observations of nearby galaxies. Building on previous work in which we developed a method to automatically detect tidal features around galaxies and generated one of the largest such samples to date (Kado-Fong et al. 2018), I will examine the formation mechanism of such tidal debris around massive galaxies as a function of the present-day morphology of the tidal feature system, and consider the correlation between the tidal feature morphology and the properties of its host galaxy. I will then present a sample of dwarf-dwarf mergers in the field, and examine the progression of star formation throughout the dwarf-dwarf merger sequence.
Deliverable 7.7: Dissemination Plan -UPDATE 1
Creators: name: ARETE
Publisher: name: Zenodo
Year: 2021

description: Deliverable 7.7. presents the updates of D7.1 ARETE Dissemination plan and as such is a living document, which is regularly updated and summarized during the project such that by the end of the project all Key Performance Indicators are attained. The main updates of D7.1 in M14 include the following: Updates on WP7 Deliverable amendment in July 2020 Updates on Dissemination Plan (responsibilities, schedule, channels/tools) Updates of dissemination and communication activities (Year 1) Updates on Exploitation plan (Year 2) Updates on Annexes 1-4 (D7.1) Dissemination is a key part of the project which is driven by research and the end outcome is three pilot products embedded with AR technology that will help thousands of students at primary school education. A clear dissemination strategy ensures that the all consortium members adhere to the plan which is purposefully designed to make the appropriate stakeholders aware and engage in the pilots and the research outcomes of the project. Within the suggested dissemination plan in D7.1 some changes were made in January 2020 to optimize the communication effort and provide leading partners on a weekly basis with a content suggestion. This strategy identifies ways to quantitatively measure the effectiveness of the dissemination efforts. Communications’ responsibilities have been evenly spread and scheduled among all consortium partners for the initial and further stages of the project. Communications’ schedule has been provided to all consortium partners. Communications’ vehicles have been pre-selected, clearly identified and communicated to all the consortium partners. KPIs and progress monitoring have been put in place for evaluating transparency, progress on project awareness. Clear reporting has been set up and communicated to all partners of ARETE consortium. The strategy selected to position ARETE brand within the lifetime of the project focuses on the following elements (added year 4 based on the ARETE project extension for 6 months): Year 1: How the idea was born? Meet the creators of the future with ARETE. Year 2: What is going on? Get ready to participate in the future.
 Year 3: What are the results? How to keep EdTech with AR sustainable.
 Year 4: Showcase of ARETE AR ecosystem and disseminate the results. D7.7 will be further updated in D7.8 during the project lifetime at M28.
description: This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 856533.
INTEGRATED STRATIGRAPHY OF MIDDLE-LATE MIOCENE SYNOROGENIC DEPOSITS OF THE EASTERN SOUTHERN APENNINE CHAIN: THE SAN BARTOLOMEO FLYSCH
Creators: name: CASCELLA, ANTONIO
name: LIRER, FABRIZIO
name: CESARANO, MASSIMO
name: CASCIELLO, EMILIO
name: PAPPONE, GERARDO
Publisher: name: Università degli Studi di Milano
Year: 2012
Subjects: Calcareous plankton biostratigraphy; Middle and Late Miocene; Mediterranean; San Bartolomeo Flysch; Southern Apennines

description: The present paper deals with the stratigraphic and biostratigraphic study of the middle-late Miocene thrust-top basin deposits of the San Bartolomeo Flysch, exposed north of Matese mountains and analysed during the geological survey of the sheet N° 405 Campobasso of the new Geological Map of Italy, 1:50.000 scale. The integrated study of calcareous nannofossils and planktonic foraminifera, based on the semi-quantitative distribution range of index species, revealed the presence of age-diagnostic assemblages which are comparable with those of different middle-late Miocene deep-marine sedimentary settings of the Mediterranean Basin. The biostratigraphic dataset suggests an early Serravallian – early middle Tortonian age. In terms of calcareous nannofossil biostratigraphy, the studied succession falls between the Last Occurrences of Sphenolithus heteromorphus and the First Occurrence of Discoaster bellus gr., corresponding to the MNN6 – MNN8 zone interval. In terms of planktonic foraminiferal biostratigraphy the studied sediments fall between the Last Occurrence of Globorotalia peripheroronda and the First Regular Occurrence of Neogloboquadrina acostaensis, corresponding to the MM6 p.p. - MMi10 p.p. zone interval. This study documents the applicability of the recent Mediterranean middle –late Miocene biozonations for the biostratigraphic study of siliciclastic synorogenic sediments, and challenges the most recent studies that dated the San Bartolomeo Flysch to the late Tortonian- early Messinian.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 118, No 2
Chemo-Dynamics in M31's Stellar Halo: Constraining the Nature of the Giant Stellar Stream's Progenitor
Creators: name: Gilbert, Karoline
Publisher: name: Zenodo
Year: 2019

description: The halo of M31 shows ample evidence of an active recent merger history. However, existing observations, including photometric star count maps, star formation histories, and line of sight kinematics of tidal debris features, can be accommodated by very different recent accretion histories. In particular, it has been suggested that M31’s largest tidal debris feature, the giant stellar stream, could be formed in either a minor or major merger. Detailed chemical abundances provide a powerful new observational dimension to distinguish between different merger scenarios. I present the first measurements of [Fe/H] and alpha-element abundances for red giant branch stars in a field on M31's giant stellar stream, obtained using spectral synthesis modeling. Three distinct kinematical components have been previously identified in the spectroscopic field: the giant stellar stream, a second kinematically cold feature of unknown origin, and M31's underlying kinematically hot halo. We use a chemo-dynamical analysis to compare probabilistic [Fe/H] and [alpha/Fe] distribution functions for each of the these components, finding that the giant stellar stream and the other kinematically cold feature in this field have very similar abundance distributions, while the halo component is on average more metal-poor. I discuss the implications of the abundance distributions of the features in this field for the properties of their progenitor(s). Finally, I discuss prospects for large scale chemo-dynamical analyses of M31’s stellar halo with present and future facilities.
TAXONOMIC REVIEW OF CHONDRITES AFFINIS (STERNBERG, 1833) FROM CRETACEOUS-NEOGENE OFFSHORE-DEEP-SEA TETHYAN SEDIMENTS AND RECOMMENDATION FOR ITS FURTHER USE
Creators: name: UCHMAN, ALFRED
name: CARUSO, CLAUDIA
name: SONNINO, MAURIZIO
Publisher: name: Università degli Studi di Milano
Year: 2012
Subjects: Ichnology; Ichnotaxonomy; Chondrites; Offshore-deep-sea sediments; Cretaceous; Italy

description: The branched trace fossil Chondrites affinis (Sternberg, 1833), synonymised so far with C. targionii (Brongniart, 1828), has been analyzed in an exceptionally well preserved specimen from the Saraceno Formation (?Upper Cretaceous; ?Eocene-Miocene) in the southern Italy, its holotype (Prague Museum), and in other materials. It appeared that C. affinis displays a smaller burrow system/burrow width ratio and a larger size (burrow width typically over 4 mm and burrow system width over 150 mm) than C. targionii, without continuity of the latter parameters between these ichnospecies. Therefore, Chondrites affinis is considered as a separate ichnospecies, and is recommended for further use. It occurs in Upper Cretaceous to Neogene offshore, deep-sea, mostly marly sediments, and its unquestionable occurrences are known so far from the European Alpides.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 118, No 2
TRAGULIDS (ARTIODACTYLA, RUMINANTIA, TRAGULIDAE) FROM THE MIDDLE SIWALIKS OF HASNOT (LATE MIOCENE), PAKISTAN
Creators: name: AKBAR KHAN, MUHAMMAD
name: AKHTAR, MUHAMMAD
name: ILIOPOULOS, GEORGE
name: HINA, -
Publisher: name: Università degli Studi di Milano
Year: 2012
Subjects: Dorcatherium; Dorcabune; Vertebrate fossils; Late Miocene; Siwaliks

description: Tragulids are the best represented ruminants in the Hasnot outcrops of the Pakistani Middle Siwaliks (Late Miocene). The remains described in this paper comprises predominantly isolated teeth, maxilla and mandible fragments. The specimens can be referred to three taxa, namely Dorcatherium minus, Dorcatherium majus and Dorcabune anthracotherioides. The collection of Dorcatherium fossils from Hasnot is the most extensive record of this genus in the Siwaliks. The tragulids suggest a humid habitat with abundant cover.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 118, No 2
An embedded device for direction-of-arrival estimation in BLE networks based on a reconfigurable antenna
Creators: name: Kasiewicz, Marek
Publisher: name: Zenodo
Year: 2021
Subjects: subject: Internet of Things (IoT)
subject: wireless sensor network (WSN)
subject: Bluetooth Low Energy (BLE)
subject: electronically steerable parasitic array radiator (ESPAR) antenna
subject: direction-of-arrival (DoA)
subject: http://www.oecd.org/dataoecd/36/44/38235147.pdf

description: This paper presents the use of a reconfigurable antenna to estimate packets arrival direction in a Bluetooth Low Energy (BLE) network. The nRF52840 chip was used to control the antenna and receive packets. It has a builtin 2.4 GHz transceiver and supports the Bluetooth standard. This paper also presents the results of the direction estimation tests.
description: This paper is a result of the Arrowhead Tools project (www.arrowhead.eu) which has received funding from the ECSEL Joint Undertaking (JU) under grant agreement No 826452. The JU receives support from the European Union's Horizon 2020 research and innovation programme and Sweden, Austria, Spain, Poland, Germany, Italy, Czech Republic, Netherlands, Belgium, Latvia, Romania, France, Hungary, Portugal, Finland, Turkey, Norway, Switzerland. The document reflects only the authors' view and the Commission is not responsible for any use that may be made of the information it contains.
Microscopic approach of fission dynamics applied to fragment kinetic energy and mass distributions in 238U
Creators: name: Goutte, H.
name: Berger, J. F.
name: Casoli, P.
name: Gogny, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The collective dynamics of low energy fission in 238U is described within a time-dependent formalism based on the Gaussian Overlap Approximation of the time-dependent Generator Coordinate Method. The intrinsic deformed configurations of the nucleus are determined from the self-consistent Hartree-Fock-Bogoliubov procedure employing the effective force D1S with constraints on the quadrupole and octupole moments. Fragment kinetic energy and mass distributions are calculated and compared with experimental evaluations. The effect of the collective dynamics along the fission paths and the influence of initial conditions on these distributions are analyzed and discussed.
description: 15 pages, 15 figures, 2 tables, Accepted in Physical Review C
Prediction of Intrinsic Triferroicity in Two-Dimensional Lattice
Creators: name: Shena, Shiying
name: Ma, Yandong
name: Xu, Xilong
name: Huang, Baibiao
name: Kou, Liangzhi
name: Dai, Ying
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Intrinsic triferroicity is essential and highly sought for novel device applications, such as high-density multistate data storage. So far, the intrinsic triferroicity has only been discussed in three-dimensional systems. Herein on basis of first-principles, we report the intrinsic triferroicity in two-dimensional lattice. Being exfoliatable from the layered bulk, single-layer FeO2H is shown to be an intrinsically triferroic semiconductor, presenting antiferromagnetism, ferroelasticity and ferroelectricity simultaneously. Moreover, the directional control of its ferroelectric polarization is achievable by 90° reversible ferroelastic switching. In addition, single-layer FeO2H is identified to harbor in-plane piezoelectric effect. The unveiled phenomena and mechanism of triferroics in this two-dimensional system not only broaden the scientific and technological impact of triferroics but also enable a wide range of nanodevice applications.
REVISION OF LATE MESSINIAN LYMNOCARDIINAE (BIVALVIA)FROM PIEDMONT (NW ITALY)
Creators: name: ESU, DANIELA
name: VALENTINOVICH POPOV, SERGEY
Publisher: name: Università degli Studi di Milano
Year: 2012
Subjects: Lymnocardiinae; Bivalvia; Systematics; NW Italy; Late Messinian; Mediterranean; Paratethys

description: The paper discusses a revised interpretation of the Late Messinian malacofaunas of Piedmont, namely the bivalves of the subfamily Lymnocardiinae (family Cardiidae), which are kept at the Museo Regionale di Scienze Naturali of Turin and the Museo Civico Archeologico e di Scienze Naturali "Federico Eusebio" of Alba (Cuneo). The historical Bellardi and Sacco collection in Turin contains various specimens of Lymnocardiinae that F. Sacco collected from various sites in the provinces of Cuneo and Alessandria (Piedmont) at the end of the 19th century. The Alba museum holds several species that O. Cavallo and G. Repetto found in the Alba area in the 1980-1990s. The authors of the paper deemed it necessary to reinvestigate the above-mentioned material, in spite of its non-optimal conservation status, because it testifies the high specific diversity of the Late Messinian “lago-mare” molluscan assemblages of Piedmont, whose original deposits are often no longer accessible. Both Pontian Paratethyan taxa and Late Messinian Mediterranean endemics were recognised. Fifteen species referable to five genera were identified. Five species have been left in open nomenclature, due to poor preservation and scarcity of material, and a new species of Lymnocardiinae, referable to the genus Pseudocatillus Andrussov, was described: Pseudocatillus nevesskayae n. sp.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 118, No 2
Characteristics of Magnetic Holes in the Solar Wind Revealed by Parker Solar Probe
Creators: name: Yu, L.
name: Huang, S. Y.
name: Yuan, Z. G.
name: Jiang, K.
name: Xiong, Q. Y.
name: Xu, S. B.
name: Wei, Y. Y.
name: Zhang, J.
name: Zhang, Z. H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We present a statistical analysis for the characteristics and radial evolution of linear magnetic holes (LMHs) in the solar wind from 0.166 to 0.82 AU using Parker Solar Probe observations of the first two orbits. It is found that the LMHs mainly have a duration less than 25 s and the depth is in the range from 0.25 to 0.7. The durations slightly increase and the depths become slightly deeper with the increasing heliocentric distance. Both the plasma temperature and the density for about 50% of all events inside the holes are higher than the ones surrounding the holes. The average occurrence rate is 8.7 events/day, much higher than that of the previous observations. The occurrence rate of the LMHs has no clear variation with the heliocentric distance (only a slight decreasing trend with the increasing heliocentric distance), and has several enhancements around ~0.525 AU and ~0.775 AU, implying that there may be new locally generated LMHs. All events are segmented into three parts (i.e., 0.27, 0.49 and 0.71 AU) to investigate the geometry evolution of the linear magnetic holes. The results show that the geometry of LMHs are prolonged both across and along the magnetic field direction from the Sun to the Earth, while the scales across the field extend a little faster than along the field. The present study could help us to understand the evolution and formation mechanism of the LMHs in the solar wind.
description: Accepted by ApJ
Higher-order QCD effects in the Higgs to ZZ search channel at the LHC
Creators: name: Frederix, Rikkert
name: Grazzini, Massimiliano
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a consistent analysis of the signal as well as the irreducible background for the search of the SM Higgs boson in the ZZ decay channel at the LHC. Soft-gluons effects are resummed up to next-to-leading logarithmic accuracy, and the results are compared to those obtained with fixed order calculations and the MC@NLO event generator. The soft-gluon effects are typically modest but should be taken into account when precise predictions are demanded. Our results show that the signal over background ratio can be significantly enhanced with a cut on the transverse momentum pt(ZZ) of the ZZ pair. We also introduce a fully transverse angular variable that could give information about the CP nature of the Higgs boson.
description: 12 pages, 8 figures. Discussion on scale uncertainties added
Collective Excitations of Bose-Einstein Condensates in a Double-Well Potential
Creators: name: Danshita, Ippei
name: Egawa, Kyota
name: Yokoshi, Nobuhiko
name: Kurihara, Susumu
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We investigate collective excitations of Bose-Einstein condensates at absolute zero in a double-well trap. We solve the Bogoliubov equations with a double-well trap, and show that the crossover from the dipole mode to the Josephson plasma mode occurs in the lowest energy excitation. It is found that the anomalous tunneling property of low energy excitations is crucial to the crossover.
description: 14 pages, 6 figures
FUYUANPERLEIDUS DENGI GENG ET AL., 2012 (OSTEICHTHYES, ACTINOPTERYGII) FROM THE MIDDLE TRIASSIC OF YUNNAN PROVINCE, SOUTH CHINA
Creators: name: SUN, ZUOYU
name: LOMBARDO, CRISTINA
name: TINTORI, ANDREA
name: JIANG, DAYONG
name: HAO, WEICHENG
name: SUN, YUANLIN
name: LIN, HUNQIN
Publisher: name: Università degli Studi di Milano
Year: 2012
Subjects: Actinopterygians; Perleidiformes; Middle Triassic; South China

description: Two well preserved specimens of Fuyuanperleidus dengi Geng et al., 2012 are described from the Upper Member of the Guanling Formation (Pelsonian, Anisian, Middle Triassic) in Luoping County, Yunnan Province, South China. The attribution  to Perleidiformes is confirmed according to a combination of features such as the general skull pattern, with the large preoperculum showing a prominent infraorbital process, the maxilla with deep posterior region and a dentition made of  long and stout peg-like teeth with an acuminate apex, the deep mid-lateral flank scales and the caudal fin with epaxial fin rays. However, this taxon shows an unique arrangement of the squamation (here considered as autapomorphy) given by the insertion of several scales in each vertical row posterior to the pelvic fin, just below the scales carrying the lateral line, when their depth decreases abruptly. Owing to this unique character, and  in spite of the very recent description of this genus, the authors considered necessary the erection of a new family, Fuyuanperleididae offering also new insights on the evolutionary trends and morphological specializations of the “subholosteans”. A cladistic analysis of the well known perleidiformes, with this taxon included, supports a possible monophyly of the order, and matches well the paleobiogeographic relationships of the Gondwana fresh-water taxa. The specialized deep-bodied Gondwana and Tethyan perleidiformes are independently evolved, ascertained by the parsimony analysis.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 118, No 3
CybergeoNetworks, an interactive application for the geographical and semantic analysis of scientific publications
Creators: name: Cottineau, C.
name: Raimbault, J.
name: Chasset, P. -O.
name: Commenges, H.
name: Banos, A.
name: Pumain, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: The increase in the number of publications has made more difficult for authors to situate their work within previous literature, especially on subjects studied from different disciplinary viewpoints. Besides, new data analysis techniques and new bibliometrics data sources provide an opportunity to map and navigate scientific landscapes. We introduce here an open-source and open-access web application designed for the multi-dimensional exploration of a journal content, including the mapping of geographical, semantic and citations networks. The application is profiled and implemented for the geography journal Cybergeo, a generalist geography journal which receives contributions from multiple sub-disciplines. We suggest that such initiatives are crucial to promote open science and reflexivity.
description: 6 pages, 3 figures. Translated from French
Star Formation History of the Hubble Ultra Deep Field: Comparison with the HDFN
Creators: name: Thompson, Rodger I.
name: Eisenstein, Daniel
name: Fan, Xiaohui
name: Dickinson, Mark
name: Illingworth, Garth
name: Kennicutt, Robert C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the NICMOS Treasury and ACS HUDF images to measure the extinction corrected star formation history for 4681 galaxies in the region common to both images utilizing the star formation rate distribution function and other techniques similar to those employed with the NICMOS and WFPC2 images in the HDFN. Unlike the HDFN the NICMOS region of the HUDF appears to lack highly luminous and high star formation rate galaxies at redshifts beyond 3. The HUDF provides a region that is completely uncorrelated to the HDFN and therefore provides and independent measure of the star formation history of the universe. The combined HUDF and HDFN star formation rates show an average star formation rate of 0.2 solar masses per yer per cubic megaparsec. The average SFR of the combined fields at z = 1-3 is 0.29 solar masses per year per cubic megaparsec while the average at z = 4-6 is 1.2 solar masses per year per cubic megaparsec. The SFRs at all redshifts are within 3 sigma of the average over all redshifts.
description: Accepted for publication in the Astrophysical Journal
Zero- and one-dimensional magnetic traps for quasi-particles
Creators: name: Redlinski, P.
name: Wojtowicz, T.
name: Rappoport, T. G.
name: Libal, A.
name: Furdyna, J. K.
name: Janko, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the possibility of trapping quasi-particles possessing spin degree of freedom in hybrid structures. The hybrid system we are considering here is composed of a semi-magnetic quantum well placed a few nanometers below a ferromagnetic micromagnet. We are interested in two different micromagnet shapes: cylindrical (micro-disk) and rectangular geometry. We show that in the case of a micro-disk, the spin object is localized in all three directions and therefore zero-dimensional states are created, and in the case of an elongated rectangular micromagnet, the quasi-particles can move freely in one direction, hence one-dimensional states are formed. After calculating profiles of the magnetic field produced by the micromagnets, we analyze in detail the possible light absorption spectrum for different micromagnet thicknesses, and different distances between the micromagnet and the semimagnetic quantum well. We find that the discrete spectrum of the localized states can be detected via spatially-resolved low temperature optical measurement.
description: 15 pages, 9 figures
EARLY LADINIAN RADIOLARIAN FAUNA FROM THE MONTE SAN GIORGIO (SOUTHERN ALPS, SWITZERLAND): SYSTEMATICS, BIOSTRATIGRAPHY AND PALEO(BIO)GEOGRAPHIC IMPLICATIONS
Creators: name: STOCKAR, RUDOLF
name: DUMITRICA, PAULIAN
name: O. BAUMGARTNER, PETER
Publisher: name: Università degli Studi di Milano
Year: 2012
Subjects: Middle Triassic; Ladinian; Radiolaria; Systematics; Biostratigraphy; Palaeobiogeography; Monte San Giorgio

description: A well-preserved radiolarian fauna was recovered from the lower part of the San Giorgio Dolomite (Monte San Giorgio, UNESCO WHL, Switzerland), belonging to the Eoprotrachyceras curionii Ammonoid Zone (earliest Ladinian). The depositional environment, consisting of an intraplatform basin with restricted circulation, seemingly resulted in an unusual radiolarian assemblage displaying neglegible percentages and very low diversity of Nassellaria. Seventy-three species have been identified and seven new species have been described: Eptingium danieli n. sp., Eptingium neriae n. sp., Parentactinosphaera eoladinica n. sp., Sepsagon ticinensis n. sp., Sepsagon ? valporinae n. sp., Novamuria wirzi n. sp. and Pessagnollum hexaspinosum n. sp. The taxonomic status of the recovered species has been reassessed and four new genera have been introduced: Bernoulliella gen. n., Eohexastylus gen. n., Ticinosphaera gen. n. and Lahmosphaera gen. n. The new radiolarian assemblages, the first so far described from the Monte San Giorgio, supplement further information to the taxa occurring in the uppermost Ladinocampe multiperforata Radiolarian Zone, as yet poorly defined, also confirming the absence of major changes in the radiolarian fauna across the Anisian/Ladinian boundary. The widespread co-occurrence of taxa doubtlessly testifies to the existence, in early Ladinian times, of open-marine connections between the basin of the Monte San Giorgio and the pelagic “Buchenstein” basins of the central and eastern South-Alpine domain and farther afield across the Tethys.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 118, No 3
Work fluctuations for a Brownian particle between two thermostats
Creators: name: Visco, Paolo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We explicitly determine the large deviation function of the energy flow of a Brownian particle coupled to two heat baths at different temperatures. This toy model, initially introduced by Derrida and Brunet [B. Derrida and E. Brunet, in "Einstein aujourd'hui", EDP Sciences, 2005], allows not only to sort out the influence of initial conditions on large deviation functions but also to pinpoint various restrictions bearing upon the range of validity of the Fluctuation Relation.
description: 9 pages, 5 figures
Steering laws for motion camouflage
Creators: name: Justh, E. W.
name: Krishnaprasad, P. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 93C10 (Primary); 93D30 (Secondary)

description: Motion camouflage is a stealth strategy observed in nature. We formulate the problem as a feedback system for particles moving at constant speed, and define what it means for the system to be in a state of motion camouflage. (Here we focus on the planar setting, although the results can be generalized to three-dimensional motion.) We propose a biologically plausible feedback law, and use a high-gain limit to prove accessibility of a motion camouflage state in finite time. We discuss connections to work in missile guidance. We also present simulation results to explore the performance of the motion camouflage feedback law for a variety of settings.
description: 8 pages
Ethnicity, gender and coercive sexual attitudes and ethnic differences in childhood abuse and trauma
Creators: name: Kennedy, Margaret Alexis
Publisher: name: University of British Columbia
Year: 2009

description: CHAPTER 1 - ETHNICITY, GENDER AND COERCIVE SEXUAL ATTITUDES This study explored potential differences between Asian and non-Asian university students in attitudes towards coercive and non-coercive sexual behaviour. Four hundred respondents (205 Asian, 195 non-Asian) were assessed on attitudes toward rape, sexual harassment and non-coercive sexual behaviour. Gender differences and interactions between gender and ethnicity were also examined. Further, length of residency in Canada of Asian respondents was examined to determine whether "Westernization" might attenuate differences between Asians and non-Asians. Statistical analysis revealed that Asian students were significantly more conservative in attitudes towards non-coercive sexual behaviour, tolerance of rape myths and acceptance of sexual harassment. Length of residency in Canada decreased conservatism in attitudes towards tolerance of rape myths and acceptance of sexual harassment. By contrast, length of residency in Canada had almost no effect on attitudes towards non-coercive sexual behaviour. On almost all items, women were less conservative than men of the same ethnic background. CHAPTER II - ETHNIC DIFFERENCES IN CHILDHOOD ABUSE AND TRAUMA This study explored potential differences between university students of Asian and non- Asian origin in experiences of childhood maltreatment. Eleven hundred and fifteen respondents (615 Asian, 500 non-Asian) were assessed for their self-reported experiences of child abuse and trauma. Potential gender differences and interactions between gender and ethnicity were also examined. Further, length of residency in Canada of Asian respondents was examined to determine whether "Westernization" might attenuate differences between Asians and non-Asians. Statistical analysis revealed that Asian students reported significantly more negative experiences in childhood and adolescence. Asian students reported significantly higher levels of punishment, negative home environment and neglect. Increased length of residency in Canada resulted in a decrease in reported levels of punishment but not other types of childhood maltreatment. Significant gender differences were found on relatively few items and there were no interactions between gender and ethnicity.
CALCAREOUS NANNOFOSSIL BIOSTRATIGRAPHY OF THE S’ADDE LIMESTONE (MT. ALBO, OROSEI GULF): INSIGHTS INTO THE MIDDLE-LATE JURASSIC EASTERN SARDINIA PASSIVE MARGIN EVOLUTION
Creators: name: EMANUELA CASELLATO, CRISTINA
name: JADOUL, FLAVIO
name: LANFRANCHI, ALESSANDRO
Publisher: name: Università degli Studi di Milano
Year: 2012
Subjects: Callovian-Early Tithonian; Eastern Sardinia; S’Adde Limestone; calcareous nannofossil; hardground; south European passive margin

description: Calcareous nannofossil biostratigraphy has been performed on tree sections cropping out in Eastern Sardinia (Orosei Gulf, Mt. Albo). Calcareous nannofossils are rare to few and poorly to moderately preserved. Nevertheless thirteen bioevents have been recognized (S’Adde valley section) and a Late Bathonian-Early Tithonian age is derived for the S’Adde Limestone (Lms.). The inferred age constraints, integrated with data from the literature, allow the revision of the S’Adde Lms. chronostratigraphy, and the formalization of the S’Adde Limestone (Dieni & Massari 1985) as a lithostratigraphic unit. Qualitative evaluations of carbonate production/sedimentation rates for the north Mt. Albo area are proposed: the Late Bathonian-Callovian and Oxfordian were times of pronounced reduction of carbonate production/exportation, in agreement with the European passive margin evolution, also affected by starvation fenomena and condensations. A Middle-Late Jurassic basin-and-swell setting related to regional tensional tectonic activity is reconstructed for the north Mt. Albo area. The comparison of new and literature data allows framing the local and Eastern Sardinia passive margin evolution in the broader geodynamic and paleogeographic context of the southern European margin.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 118, No 3
Spin-dependent Tunneling Barriers in CoPc/VSe2 from Many-Body Interactions
Creators: name: Xu, Runrun
name: Xuan, Fengyuan
name: Quek, Su Ying
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Mixed-dimensional magnetic heterostructures are intriguing, newly available platforms to explore quantum physics and its applications. Using state-of-the-art many-body perturbation theory, we predict the energy level alignment for a self-assembled monolayer of cobalt phthalocyanine (CoPc) molecules on magnetic VSe 2 monolayers. The predicted projected density of states on CoPc agrees with experimental scanning tunneling spectra. Consistent with experiment, we predict a shoulder in the unoccupied region of the spectra that is absent from mean-field calculations. Unlike the nearly spin-degenerate gas phase frontier molecular orbitals, the tunneling barriers at the interface are spin-dependent, a finding of interest for quantum information and spintronics applications. Both the experimentally observed shoulder and the predicted spin-dependent tunneling barriers originate from many-body interactions in the interface-hybridized states. Our results showcase the intricate many-body physics that governs the properties of these mixed-dimensional magnetic heterostructures, and suggests the possibility of manipulating the spin-dependent tunneling barriers through modifications of interface coupling.
Discrete peakons
Creators: name: Comech, A.
name: Cuevas, J.
name: Kevrekidis, P. G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We demonstrate for the first time the possibility for explicit construction in a discrete Hamiltonian model of an exact solution of the form $\exp(-|n|)$, i.e., a discrete peakon. These discrete analogs of the well-known, continuum peakons of the Camassa-Holm equation [Phys. Rev. Lett. {\bf 71}, 1661 (1993)] are found in a model different from their continuum siblings. Namely, we observe discrete peakons in Klein-Gordon-type and nonlinear Schrödinger-type chains with long-range interactions. The interesting linear stability differences between these two chains are examined numerically and illustrated analytically. Additionally, inter-site centered peakons are also obtained in explicit form and their stability is studied. We also prove the global well-posedness for the discrete Klein-Gordon equation, show the instability of the peakon solution, and the possibility of a formation of a breathing peakon.
description: Physica D, in press
Elicitation of verb paradigms from unpublished Goddard material
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-071119-04: Verb paradigm elicitation based on unpublished material transcribed by P.E. Goddard (Bancroft Library CU-23.1 12.14.1, file 2184-12 (4).pdf).
On pointed Hopf algebras associated to some conjugacy classes in S_n
Creators: name: Andruskiewitsch, Nicol'as
name: Zhang, Shouchuan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 16W30

description: We show that any pointed Hopf algebra with infinitesimal braiding associated to the conjugacy class of pi in S_n is infinite-dimensional, if either the order of pi is odd, or pi is a product of disjoint cycles of odd order except for exactly two transpositions.
description: 10 pages. In the second version, the title is shortened and some minor mistakes are corrected. In the third version, Lemma 2.2 is improved. The fourth version, to appear in Proc. Amer. Math. Soc., contains a few remarks suggested by the referee
Scaling relations, virial theorem and energy densities for long-range and short-range density functionals
Creators: name: Toulouse, Julien
name: Gori-Giorgi, Paola
name: Savin, Andreas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We analyze a decomposition of the Coulomb electron-electron interaction into a long-range and a short-range part in the framework of density functional theory, deriving some scaling relations and the corresponding virial theorem. We study the behavior of the local density approximation in the high-density limit for the long-range and the short-range functionals by carrying out a detailed analysis of the correlation energy of a uniform electron gas interacting via a long-range only electron-electron repulsion. Possible definitions of exchange and correlation energy densities are discussed and clarified with some examples.
description: 7 pages, 3 figures
REVISION OF THE AMPHIASTRAEIDAE FROM THE MONTI D'OCRE AREA(SCLERACTINIA; EARLY CRETACEOUS)
Creators: name: LÖSER, HANNES
Publisher: name: Università degli Studi di Milano
Year: 2012
Subjects: Scleractinian corals; Amphiastraeidae; Cretaceous; Systematics; Italy

description: The four Amphiastrea species from the Early Aptian of the Monti d'Ocre area described as new by Prever (1909) are revised on the basis of the type material. One species - Amphiastrea paronai - remains in this genus. Another - Amphiastrea delorenzoi - cannot be assigned to any genus. The remaining two species belong to the new genus Hexamphiastrea, which differs from all amphiastreid genera by its regular hexameral septal symmetry. Amphiaulastrea suprema Morycowa & Marcopoulou-Diacantoni, 1997 from the Early Aptian of Greece is designated as the type species. The new genus is only known from the Early Aptian of Italy and Central Greece.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 118, No 3
QCD Factorization for heavy quarkonium production at collider energies
Creators: name: Qiu, Jian-Wei
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this talk, I briefly review several models of the heavy quarkonium production at collider energies, and discuss the status of QCD factorization for these production models.
description: 7 pages, 12 figures, Talk presented at the Conference on Quark Confinement and Hadron Spectrum VII, Ponta Delgada, Portugal, 2-7 September, 2006
Gauge Baryon Number and Dibaryonic Dark Matter
Creators: name: Ma, Ernest
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The minimal standard model of quarks and leptons is extended with a set of vectorlike fermions to allow baryon number $B$ to become a gauged $U(1)_B$ symmetry. The $B$ assignments of the new particles are determined by renormalizable interactions with the known quarks through a color triplet scalar diquark. The spontaneous breaking of $U(1)_B$ by a scalar with $B=3$ results in a conserved residual global $B$ symmetry. A singlet neutral scalar with $B=2$ is a possible long-lived dark-matter candidate.
description: 10 pages, 1 figure
Spatial modelling for mixed-state observations
Creators: name: Hardouin, Cécile
name: Yao, Jian-Feng
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62H05, 62E10 (Primary) 62M40 (Secondary)

description: In several application fields like daily pluviometry data modelling, or motion analysis from image sequences, observations contain two components of different nature. A first part is made with discrete values accounting for some symbolic information and a second part records a continuous (real-valued) measurement. We call such type of observations "mixed-state observations". This paper introduces spatial models suited for the analysis of these kinds of data. We consider multi-parameter auto-models whose local conditional distributions belong to a mixed state exponential family. Specific examples with exponential distributions are detailed, and we present some experimental results for modelling motion measurements from video sequences.
description: Published in at http://dx.doi.org/10.1214/08-EJS173 the Electronic Journal of Statistics (http://www.i-journals.org/ejs/) by the Institute of Mathematical Statistics (http://www.imstat.org)