cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Covariant Chiral Kinetic Equation in Non-Abelian Gauge field from "covariant gradient expansion"
Creators: name: Luo, Xiao-Li
name: Gao, Jian-Hua
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We derive the chiral kinetic equation in 8 dimensional phase space in non-Abelian $SU(N)$ gauge field within the Wigner function formalism. By using the "covariant gradient expansion", we disentangle the Wigner equations in four-vector space up to the first order and find that only the time-like component of the chiral Wigner function is independent while other components can be explicit derivative. After further decomposing the Wigner function or equations in color space, we present the non-Abelian covariant chiral kinetic equation for the color singlet and multiplet phase-space distribution functions. These phase-space distribution functions have non-trivial Lorentz transformation rules when we define them in different reference frames. The chiral anomaly from non-Abelian gauge field arises naturally from the Berry monopole in Euclidian momentum space in the vacuum or Dirac sea contribution. The anomalous currents as non-Abelian counterparts of chiral magnetic effect and chiral vortical effect have also been derived from the non-Abelian chiral kinetic equation.
description: 19 pages, no figures
The Heegaard structure of Dehn filled manifolds
Creators: name: Moriah, Yoav
name: Sedgwick, Eric
Publisher: name: arXiv
Year: 2007
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57N10, 57M27

description: We expect manifolds obtained by Dehn filling to inherit properties from the knot manifold. To what extent does that hold true for the Heegaard structure? We study four changes to the Heegaard structure that may occur after filling: (1) Heegaard genus decreases, (2) a new Heegaard surface is created, (3) a non-stabilized Heegaard surface destabilizes, and (4) two or more non-isotopic Heegaard surfaces become isotopic. We survey general results that give quite satisfactory restrictions to phenomena (1) and (2) and, in a parallel thread, give a complete classification of when all four phenomena occur when filling most torus knot exteriors. This latter thread yields sufficient (and perhaps necessary) conditions for the occurrence of phenomena (3) and (4).
description: This is the version published by Geometry & Topology Monographs on 3 December 2007
Modellierung und Export von Multicore-Eigenschaften für Simulationen während der Steuergeräteentwicklung für Fahrzeuge
Creators: name: Spasov, Tsvetan
Publisher: name: Karlsruhe
Year: 2019

description: Derzeit führen die sehr hohen Anforderungen in nahezu allen Bereichen des Fahrzeugs zu einer immer komplexer werdenden Steuergerätearchitektur. Dies betrifft unter anderem sowohl sicherheitskritische wie auch Fahrerassistenz- und Komfortsysteme. Dies führt zu einer stetig steigenden Anzahl der Funktionalitäten, die auf einem Steuergerät ausgeführt werden müssen. Damit steigt der Bedarf an Rechenleistung der dafür eingesetzten elektronischen Steuereinheiten. Um diese Anforderungen zu bewältigen, werden bei der Entwicklung sicherheitskritischer, echtzeitfähiger, eingebetteter Systeme immer häufiger Steuergeräte mit Prozessoren mit mehreren Kernen eingesetzt. Bei diesem Ansatz entstehen notwendigerweise Echtzeitanforderungen, die im Idealfall bereits in der frühen Entwicklungsphase berücksichtigt werden sollten. Die Erfüllung dieser Anforderungen werden oft erst spät während des Entwicklungsprozesses überprüft. Um Systeme mit Mehrkern-Steuergeräten modellieren zu können und deren Echtzeitanforderungen beschreiben zu können wurden in dieser Arbeit entscheidende Parameter identifiziert. Dabei wurden Lösungsansätze bereits realisierter Architektur-Entscheidungen berücksichtigt, die in der Lage sind, das Echtzeitverhalten einer E/E-Architektur zu simulieren. Mit Hilfe eines Modellierungswerkzeugs wurden die identifizierten Multicore-Parameter modelliert und in einer standardisierten Form bereitgestellt. Dadurch wurde eine Simulation sowie eine frühzeitige Verifikation der Echtzeitanforderungen ermöglicht. Somit wurde eine mögliche Werkzeugkette entworfen, prototypisch implementiert und anschließend evaluiert. Die Evaluation wurde auf Basis eines Fallbeispiels durchgeführt, welches unter Berücksichtigung anhand der zuvor identifizierten Multicore-Parameter erstellt wurde. Außerdem wurden mögliche Optimierungsansätze für die Integration und Interoperabilität der Werkzeuge herausgearbeitet.
Cephennium cauchoisi OROUSSET 2017
Creators: name: Assing, Volker
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Cephennium
Cephennium cauchoisi

description: Cephennium cauchoisi OROUSSET, 2017
Cephennium minor BESUCHET i.l.
Material examined: FRANCE: Pyrénées - Orientales: 4♂♂, 5♀♀, Vernet-les-bains, 3.VII.1976, leg. Meybohm (cAss); 12♂♂, 9♀♀, Vernet-les-bains, Abbe de St. Martin env., 1000 m, 16-19.VI.1999, leg. Wolf (cAss); 1♀, Vernet-les-bains, Miriailles, 30.VI.2000, leg. Rheinheimer (cAss); 1♀, Prats de Mollo, 4.VII.2000, leg. Rheinheimer (cAss). SPAIN: 1♂, Gerona, S Coll de Arras, 11.III.1978, leg. Lohse (cAss).
Material examined by C. Besuchet (unpubl.; identified as C. minor i.l.): FRANCE: Pyrénées - Orientales: 10♂♂, 7♀♀, La Preste, En Brixot, leg. Cauchois (MHNG, coll. Cauchois); 9♂♂, 3♀♀, La Preste, leg. Cauchois (MHNG, coll. Cauchois); 1♀, La Preste, Grotte St. Marie, leg. Cauchois (coll. Cauchois); 1♂, Canigou, 1500 m, leg. Cauchois (coll. Cauchois); 1♂, 1♀, Aegatebia, leg. Cauchois (coll. Cauchois); 1♂, locality not specified (MHNG). Aude: 1♂, Forêt des Fanges, 3.VIII.1958, leg. Dajoz (MHNG). Locality not specified 3♂♂, " Pyrénées " (MHNG).
The original description of this recently described species is based on numerous specimens from Pyrénées-Orientales. The above male from Gerona represents the first record from Spain. For illustrations of the male primary and secondary sexual characters see OROUSSET (2017).
description: Published as part of Assing, Volker, 2021, On the Cephennium fauna of the Iberian Peninsula and the Atlantic Islands (Coleoptera, Staphylinidae, Scydmaeninae), pp. 891-931 in Linzer biologische Beiträge 52 (2) on page 897, DOI: 10.5281/zenodo.5039032
Observing Floquet topological order by symmetry resolution
Creators: name: Azses, Daniel
name: Torre, Emanuele G. Dalla
name: Sela, Eran
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Symmetry protected topological order in one dimension leads to protected degeneracies between symmetry blocks of the reduced density matrix. In the presence of periodic driving, topological Floquet phases can be identified in terms of a cycling of these symmetry blocks between different charge quantum numbers. We discuss an example of this phenomenon with an Ising $\mathbb{Z}_2$ symmetry, using both analytic methods and real quantum computers. By adiabatically moving along the phase diagram, we demonstrate that the cycling periodicity is broken in Floquet topological phase transitions. An equivalent signature of the topological Floquet phase is identified as a computational power allowing to teleport quantum information.
description: Published version. 6+12 pages, 3+9 figures
Globular Cluster Abundances from High-Resolution Integrated Light Spectra, I: 47 Tuc
Creators: name: McWilliam, Andrew
name: Bernstein, Rebecca A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe the detailed chemical abundance analysis of a high-resolution (R~35,000), integrated-light (IL), spectrum of the core of the Galactic globular cluster 47 Tuc, obtained using the du Pont echelle at Las Campanas. We develop an abundance analysis strategy that can be applied to spatial unresolved extra- galactic clusters. We have computed abundances for Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Y, Zr, Ba, La, Nd and Eu. For an analysis with the known color-magnitude diagram (cmd) for 47 Tuc we obtain a mean [Fe/H] value of -0.75 +/-0.026+/-0.045 dex (random and systematic error), in good agreement with the mean of 5 recent high resolution abundance studies, at -0.70 dex. Typical random errors on our mean [X/Fe] ratios are 0.07-0.10 dex, similar to studies of individual stars in 47 Tuc, although Na and Al appear enhanced, perhaps due to proton burning in the most luminous cluster stars. Our IL abundance analysis with an unknown cmd employed theoretical Teramo isochrones; however, we apply zero-point abundance corrections to account for the factor of 3 underprediction of stars at the AGB bump luminosity. While line diagnostics alone provide only mild constraints on the cluster age (ruling-out ages younger than ~2 Gyr), when theoretical IL B-V colors are combined with metallicity derived from the Fe I lines, the age is constrained to 10--15 Gyr and we obtain [Fe/H]=-0.70 +/-0.021 +/-0.052 dex. We find that Fe I line diagnostics may also be used to constrain the horizontal branch morphology of an unresolved cluster. Lastly, our spectrum synthesis of 5.4 million TiO lines indicates that the 7300-7600A TiO window should be useful for estimating the effect of M giants on the IL abundances, and important for clusters more metal-rich than 47 Tuc.
description: 40 pages text & references, 4 tables, 19 figures (72 pages total). Changes include addition of B-V color to help constrain GC age. To appear in ApJ
A Survey on Deep Learning for Skeleton-Based Human Animation
Creators: name: Mourot, L.
name: Hoyet, L.
name: Clerc, F. Le
name: Schnitzler, François
name: Hellier, Pierre
Publisher: name: arXiv
Year: 2021
Subjects: subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: Human character animation is often critical in entertainment content production, including video games, virtual reality or fiction films. To this end, deep neural networks drive most recent advances through deep learning and deep reinforcement learning. In this article, we propose a comprehensive survey on the state-of-the-art approaches based on either deep learning or deep reinforcement learning in skeleton-based human character animation. First, we introduce motion data representations, most common human motion datasets and how basic deep models can be enhanced to foster learning of spatial and temporal patterns in motion data. Second, we cover state-of-the-art approaches divided into three large families of applications in human animation pipelines: motion synthesis, character control and motion editing. Finally, we discuss the limitations of the current state-of-the-art methods based on deep learning and/or deep reinforcement learning in skeletal human character animation and possible directions of future research to alleviate current limitations and meet animators' needs.
description: 32 pages, 10 figures, 4 tables, published in Computer Graphics Forum (CGF)
Impacts of the data quality of remote sensing vegetation index on gross primary productivity estimation
Creators: name: Sun, Yinghao
name: Peng, Dan
name: Guan, Xiaobin
name: Chu, Dong
name: Ma, Yongming
name: Shen, Huanfeng
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: As the most commonly used driven data for gross primary productivity (GPP) estimation, satellite remote sensing vegetation indexes (VI), such as the leaf area index (LAI), often seriously suffer from data quality problems induced by cloud contamination and noise. Although various filtering methods are applied to reconstruct the missing data and eliminate noises in the VI time series, the impacts of these data quality problems on GPP estimation are still not clear. In this study, the accuracy differences of the GPP estimations driven by different VI series are comprehensively analyzed based on two light use efficiency (LUE) models (the big-leaf MOD17 and the two-leaf RTL-LUE). Four VI filtering methods are applied for comparison, and GPP data across 169 eddy covariance (EC) sites are used for validation. The results demonstrate that all the filtering methods can improve the GPP simulation accuracy, and the SeasonL1 filtering method exhibits the best performance both for the MOD17 model (∆R2 = 0.06) and the RTL-LUE model (∆R2 = 0.07). The reconstruction of the key change points in the temporally continuous gaps may be the primary reason for the different performance of the four methods. Moreover, the effects of filtering processes on GPP estimation vary with latitudes and seasons due to the differences in the primary data quality. More significant improvements can be observed during the growing season and in the regions near the equator, where the data quality is relatively poor with lower primary GPP estimation accuracy. This study can guide the preprocessing of the VI data before GPP estimation.
Cephennium constrictum Assing 2021, nov.sp.
Creators: name: Assing, Volker
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Cephennium
Cephennium constrictum

description: Cephennium constrictum nov.sp. (Figs 1, 27-30, Map 1)
Type material: Holotype ♂: "E. Umg. Barcelona, Sierra del Cadi, 1700-2000 m, Col de Pal, 31.III.1994 Assing / Holotypus ♂ Cephennium constrictum sp. n. det. V. Assing 2020" (cAss). Paratype ♂: same data as holotype (cAss).
Etymology: The specific epithet (Latin, adjective) alludes to the subapically constricted ventral process of the aedeagus (ventral view).
Description: Body length 1.6-1.7 mm. Habitus as in Fig. 1. Body reddishbrown to dark-brown. External and male secondary sexual characters as in C. kiesenwetteri.
♂: aedeagus (Figs 27-30) 0.62 mm long; ventral process rather weakly curved in lateral view, medially distinctly dilated and subapically strongly constricted in ventral view; internal sac apically with a pair of clusters of long thin spines.
Comparative notes: As can be inferred from the highly similar external and male sexual characters, this species is very closely related to C. kiesenwetteri, from which it is distinguished only by the less strongly curved (lateral view), medially strongly dilated, and subapically strongly constricted ventral process of the aedeagus, as well as by the slightly longer apical spines in the internal sac of the aedeagus. For comparison, the aedeagus of C. kiesenwetteri is illustrated in Figs 25-26.
Distribution and natural history: Thetypelocalityisapassin Sierra del Cadi, approximately 100 km to the north-northwest of Barcelona (Map 1). The specimens were sifted from litter and moss in north slopes with pine and juniper at altitudes between 1700 and 2000 m.
description: Published as part of Assing, Volker, 2021, On the Cephennium fauna of the Iberian Peninsula and the Atlantic Islands (Coleoptera, Staphylinidae, Scydmaeninae), pp. 891-931 in Linzer biologische Beiträge 52 (2) on page 897, DOI: 10.5281/zenodo.5039032
The velocity distribution of SDSS satellites in MOND
Creators: name: Angus, Garry
name: Famaey, Benoit
name: Tiret, Olivier
name: Combes, Francoise
name: Zhao, HongSheng
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The recent SDSS measured velocity distribution of satellite galaxies has been modelled in the context of MOND. We show that even when the extra constraint of adhering to the projected satellite number density profile is added, the two line of sight (los) velocity dispersion profiles presented in Klypin & Prada (2007) can be matched simply with a radially varying anisotropy. Interestingly, the anisotropies required to fit the los velocity dispersions are remarkably similar to the anisotropies generated by dissipationless collapse simulations in MOND. The mass-to-light ratios of the two host galaxies used are sensible and positivity of the distribution function is satisfied.
description: 5 pages, 1 figure, accepted for publication in MNRAS Letters
Were recently reported MHz events planet mass primordial black hole mergers?
Creators: name: Domènech, Guillem
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A bulk acoustic wave cavity as high frequency gravitational wave antenna has recently detected two rare events at $5.5$MHz. Assuming that the detected events are due to gravitational waves, their characteristic strain amplitude lies at about $h_c\approx 2.5 \times 10^{-16}$. While a cosmological signal is out of the picture due to the large energy carried by the high frequency waves, the signal could be due to the merging of two planet mass primordial black holes ($\approx 4\times 10^{-4} M_\odot$) inside the Oort cloud at roughly $0.025$ pc ($5300$ AU) away. In this short note, we show that the probability of one such event to occur within this volume per year is around $1:10^{24}$, if such Saturn-like mass primordial black holes are $1\%$ of the dark matter. Thus, the detected signal is very unlikely to be due the merger of planet mass primordial black holes. Nevertheless, the stochastic background of saturn mass primordial black holes binaries might be seen by next generation gravitational wave detectors, such as DECIGO and BBO.
description: 4 pages. Matches published version
title: Carte des potentialités pastorales : Nokou
Creators: name: Fontaine, N.
name: Pelle, P.
name: De Zborowski, Isolde
name: CIRAD-IEMVT-FRA
Publisher: name: CTA; CIRAD-IEMVT
Year: 1985
Subjects: subject: Pastoralisme
subject: Type de sol
subject: Géomorphologie
subject: Végétation
subject: Fertilité du sol
subject: Taux de charge
subject: Topographie
subject: Eau souterraine
subject: Cartographie
subject: Tchad
subject: Sahel
subject: Afrique centrale
subject: L02 - Alimentation animale
subject: P10 - Ressources en eau et leur gestion
subject: P31 - Levée et cartographie des sols
subject: L02 - Animal feeding
subject: P10 - Water resources and management
subject: P31 - Soil surveys and mapping

description: In : Élevage et potentialités pastorales sahéliennes. Synthèses cartographiques. Tchad = Animal husbandry and sahelian pastoral potentialities. Cartographic synthesis. Chad. CIRAD-IEMVT. Wageningen : CTA-CIRAD-IEMVT. ISBN 2-85985-117-8
Tidal migration of hot Jupiters: introducing the impact of gravity wave dissipation
Creators: name: Lazovik, Y. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the migration of hot Jupiters orbiting solar-type pre-main sequence and main sequence stars under the effect of tidal dissipation. The explored range of stellar mass extends from 0.6 to 1.3 $M_{\odot}$. We apply recently developed prescriptions which allow us to explore the orbital evolution over the wide parameter space. Three types of tides are considered: equilibrium tide, inertial waves, and gravity waves. We combine the results of our simulations with the observed distribution of stellar and planetary parameters to evaluate the infall rate of hot Jupiters in the Milky Way galaxy. In particular, we find that, for 11 - 21% of the initial hot Jupiter population, coalescence occurs before the host star's main sequence termination. If the planet is massive enough, such an event can potentially be accompanied by a powerful transient detectable with new facilities. Orbital decay by itself can be observed through transit-timing variation. However, the obtained coalescence rate in the Galaxy is too low (340 - 650 events per million years) to make positive predictions about the observational possibility. Potentially identifiable decaying systems formed by a star corresponding to a given mass interval might be too rare to be detected with the modern space telescopes, like TESS, within a 10-year baseline. At the same time, the forthcoming missions, like PLATO, look more promising in this regard.
description: 19 pages, 18 figures
Potential improvement of XCO2 retrieval of the OCO-2 by having aerosol information from the A-train satellites
Creators: name: Hong, Jaemin
name: Kim, Jhoon
name: Jung, Yeonjin
name: Kim, Woogyung
name: Lim, Hyunkwang
name: Jeong, Sujong
name: Lee, Seoyoung
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Space Science
Medicine
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Astronomical and Space Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified

description: Near-real time observations of aerosol properties could have a potential to improve the accuracy of XCO2 retrieval algorithm in operational satellite missions. In this study, we developed a retrieval algorithm of XCO2 (Yonsei Retrieval Algorithm; YCAR) based on the Optimal Estimation (OE) method that used aerosol information at the location of the Orbiting Carbon Observatory-2 (OCO-2) measurement from co-located measurement of the Afternoon constellation (A-train) such as the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) onboard the Cloud-Aerosol Lidar and Infrared Pathfinder Observation (CALIPSO) and the MODerate-resolution Imaging Spectrometer (MODIS) onboard the Aqua. Specifically, we used optical depth, vertical profile, and optical properties of aerosol from MODIS and CALIOP data. We validated retrieval results to the Total Carbon Column Observing Network (TCCON) ground-based measurements and found general consistency. The impact of observed aerosol information and its constraint was examined by retrieval tests using different settings. The effect of using additional aerosol information was analyzed in connection with the bias correction process of the operational retrieval algorithm. YCAR using a priori aerosol loading parameters from co-located satellite measurements and less constraint of aerosol optical properties made comparable results with operational data with the bias correction process in three of the four cases subject to this study. Our work provides evidence supporting the bias correction process of operational algorithms and quantitatively presents the effectiveness of synergic use of multiple satellites (e.g. A-train) and better treatment of aerosol information.
Characterisation of analogue front end and time walk in CMOS active pixel sensor
Creators: name: Hiti, B.
name: Cindro, V.
name: Gorišek, A.
name: Franks, M.
name: Marco-Hernández, R.
name: Kramberger, G.
name: Mandić, I.
name: Mikuž, M.
name: Powell, S.
name: Steininger, H.
name: Vilella, E.
name: Zavrtanik, M.
name: Zhang, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In this work we investigated a method to determine time walk in an active silicon pixel sensor prototype using Edge-TCT with infrared laser charge injection. Samples were investigated before and after neutron irradiation to 5e14 neq/cm2. Threshold, noise and calibration of the analogue front end were determined with external charge injection. A spatially sensitive measurement of collected charge and time walk was carried out with Edge-TCT, showing a uniform charge collection and output delay in pixel centre. On pixel edges charge sharing was observed due to finite beam width resulting in smaller signals and larger output delay. Time walk below 25 ns was observed for charge above 2000 electrons at a threshold above the noise level. Time walk measurement with external charge injection yielded identical results.
Existence and stability of noncharacteristic boundary-layers for the compressible Navier-Stokes and viscous MHD equations
Creators: name: Gues, Olivier
name: Metivier, Guy
name: Williams, Mark
name: Zumbrun, Kevin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q30

description: For a general class of hyperbolic-parabolic systems including the compressible Navier-Stokes and compressible MHD equations, we prove existence and stability of noncharacteristic viscous boundary layers for a variety of boundary conditions including classical Navier-Stokes boundary conditions. Our first main result, using the abstract framework established by the authors in the companion work \cite{GMWZ6}, is to show that existence and stability of arbitrary amplitude exact boundary-layer solutions follow from a uniform spectral stability condition on layer profiles that is expressible in terms of an Evans function (uniform Evans stability). Whenever this condition holds we give a rigorous description of the small viscosity limit as the solution of a hyperbolic problem with "residual" boundary conditions. Our second is to show that uniform Evans stability for small-amplitude layers is equivalent to Evans stability of the limiting constant layer, which in turn can be checked by a linear-algebraic computation. Finally, for a class of symmetric-dissipative systems including the physical examples mentioned above, we carry out energy estimates showing that constant (and thus small-amplitude) layers always satisfy uniform Evans stability. This yields existence of small-amplitude multi-dimensional boundary layers for the compressible Navier-Stokes and MHD equations. For both equations these appear to be the first such results in the compressible case.
The Politics of Iranian and Palestinian Cinema: Expressing Dissent Through Creativity
Creators: name: Touzzelti, Rim
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2019
Subjects: Politics
Cineama
Creativity
Dissidence

description: The aim of this thesis is to challenge the common assumption that politics alone, as conventionally understood, are what governs societies. To put it differently, the goal is to argue that the cultural arena can also be political. The idea here is to look at how under certain political contexts, cinema becomes political, so obviously so that there is a “need” to censor it. Under such a constraining environment, cinema finds itself in need of finding its own language in order to counter this censorship. This marks the beginning of the creative process. Ultimately, this project makes the rather bold statement that cinema is not a simple entertainment, or else a propaganda tool, but can also be appropriated by the people, as a tool for resistance and opposition, through which dissident demands can be expressed in the face of hegemonic dominant powers using creativity and symbolism as the main processes.
Assessment of mobile source air toxics in an Environmental Justice Denver community adjacent to a freeway
Creators: name: McCarthy, Michael C.
name: Anondo D. Mukherjee
name: Ogletree, Michael
name: Furst, Jonathan
name: Gosselin, Marie I.
name: Tigges, Mark
name: Thomas, Gregg
name: Brown, Steven G.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Plant Biology

description: Air pollutant concentrations are often higher near major roadways than in the surrounding environments owing to emissions from on-road mobile sources. In this study, we quantified the gradient in black carbon (BC) and air toxics concentrations from the I-70 freeway in the Elyria-Swansea environmental justice neighborhood in Denver, Colorado, during three measurement campaigns in 2017–2018. The average hourly upwind-downwind gradient of BC concentrations from the roadway was 500–800 ng/m3, equal to an increment of approximately 30-80% above local background levels within 180 m of the freeway. When integrated over all wind directions, the gradients were smaller, approximately 150–300 ng/m3 (~11-18%) over the course of nearly four months of measurements. No statistically significant gradient in air toxics (e.g., benzene, formaldehyde, etc.) was found, likely because the uncertainties in the mean concentrations were larger than the magnitude of the gradient (<25%). This finding is in contrast to some earlier studies in which small gradients of benzene and other VOCs were found. We estimate that sample sizes of at least 100 individual measurements would have been required to estimate mean concentrations with sufficient certainty to quantify gradients on the order of ±10% uncertainty. These gradient estimates are smaller than those found in previous studies over the past two decades; more stringent emissions standards, the local fleet age distribution, and/or the steady turnover of the vehicle fleet may be reducing the overall impact of roadway emissions on near-road communities. Implications: Gradients of near-road pollution may be declining in the near-road environment as tailpipe emissions from the vehicle fleet continue to decrease. Near-road concentration gradients of mobile source air toxics, including benzene, 1,3-butadiene, and ethylbenzene, will require higher sample sizes to quantify as emissions continue to decline.
Estimating disorder and its adverse effects in semiconductor Majorana nanowires
Creators: name: Ahn, Seongjin
name: Pan, Haining
name: Woods, Benjamin
name: Stanescu, Tudor D.
name: Sarma, Sankar Das
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We use the available transport measurements in the literature to develop a dataset for the likely amount of disorder in semiconductor (InAs and InSb) materials which are used in fabricating the superconductor-semiconductor nanowire samples in the experimental search for Majorana zero modes. Using the estimated disorder in direct Majorana simulations, we conclude that the current level of disorder in semiconductor Majorana nanowires is at least an order of magnitude higher than that necessary for the emergence of topological Majorana zero modes. In agreement with existing results, we find that our estimated disorder leads to the occasional emergence of trivial zero modes, which can be post-selected and then further fine-tuned by varying system parameters (e.g., tunnel barrier), leading to trivial zero-bias conductance peaks in tunneling spectroscopy with $ \sim 2e^2/h $ magnitude. Most calculated tunnel spectra in these disordered systems, however, manifest essentially no significant features, which is also consistent with the current experimental status, where zero-bias peaks are found only occasionally in some samples under careful fine-tuning.
description: 39 pages, 32 figures, 1 table
Generalized parton distributions and spin structures of light mesons from a light-front Hamiltonian approach
Creators: name: Adhikari, Lekha
name: Mondal, Chandan
name: Nair, Sreeraj
name: Xu, Siqi
name: Jia, Shaoyang
name: Zhao, Xingbo
name: Vary, James P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present the generalized parton distributions (GPDs) for the valence quarks of the pion and the kaon in both momentum space and position space within the basis light-front quantization framework. These GPDs are obtained from the eigenvectors of a light-front effective Hamiltonian consisting of the holographic quantum chromodynamics (QCD) confinement potential, a complementary longitudinal confinement potential, and the color-singlet Nambu-Jona--Lasinio interactions for the valence quarks of mesons. We then calculate the generalized form factors of the pion and the kaon from the moments of these GPDs. Combining the tensor form factors with the electromagnetic form factors, we subsequently evaluate the impact parameter dependent probability density of transversely polarized quarks inside the pion and the kaon. The numerical results for the generalized form factors, tensor charges, as well as those for the probability densities and the transverse shift of the polarized densities are consistent with lattice QCD simulations and with chiral quark models.
description: 18 pages, 12 figures, 3 tables; minor modifications in text; accepted by PRD
LARES/WEBER-SAT and the equivalence principle
Creators: name: Iorio, Lorenzo
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: It has often been claimed that the proposed Earth artificial satellite LARES/WEBER-SAT-whose primary goal is, in fact, the measurement of the general relativistic Lense-Thirring effect at a some percent level-would allow to greatly improve, among (many) other things, the present-day (10^-13) level of accuracy in testing the equivalence principle as well. Recent claims point towards even two orders of magnitude better, i.e. 10^-15. In this note we show that such a goal is, in fact, unattainable by many orders of magnitude being, instead, the achievable level of the order of 10^-9.
description: LaTex, 4 pages, no figures, no tables, 26 references. Proofs corrections included. To appear in EPL (Europhysics Letters)
Optically induced topological spin-valley Hall effect for exciton polaritons
Creators: name: Banerjee, R.
name: Mandal, S.
name: Liew, T. C. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider exciton-polaritons in a honeycomb lattice of micropillars subjected to circularly polarized (${σ_\pm}$) incoherent pumps, which are arranged to form two domains in the lattice. We predict that the nonlinear interaction between the polaritons and the reservoir excitons gives rise to the topological valley Hall effect where in each valley two counterpropagating helical edge modes appear. Under a resonant pump, ${σ_\pm}$ polaritons propagate in different directions without being reflected around bends. The polaritons propagating along the interface have extremely high effective lifetimes and show fair robustness against disorder. This paves the way for robust exciton-polariton spin separating and transporting channels in which polaritons attain and maintain high degrees of spin polarization, even in the presence of spin relaxation.
description: 4 pages excluding references + supplementary material
Assessing the Impact of (Self)-Quarantine Through a Basic Model of Infectious Disease Dynamics
Creators: name: Farkas, Jozsef Z.
name: Chatzopoulos, Roxane
Publisher: name: arXiv
Year: 2021
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: We introduce a system of differential equations to assess the impact of (self-)quarantine of symptomatic infectious individuals on disease dynamics. To this end we depart from using the classic bilinear infection process, but remain still within the framework of the mass-action assumption. From the mathematical point of view our model is interesting due to the lack of continuous differentiability at disease free steady states, which implies also that the basic reproductive number cannot be computed following established approaches for certain parameter values. However, we parametrise our mathematical model using published values from the COVID-19 literature, and analyse the model simulations. We also contrast model simulations against publicly available COVID-19 test data focusing on the first wave of the pandemic during March - July 2020 in the UK. Our simulations indicate that actual peak case numbers might have been as much as 200 times higher than the reported positive test cases during the first wave in the UK. We find that very strong adherence to self-quarantine rules yields (only) a reduction of 22$\%$ of peak numbers and delays the onset of the peak by approximately 30-35 days. However, during the early phase of the outbreak the impact of (self)-quarantine is much more significant. We also take into account the effect of a national lockdown in a simplistic way by reducing the effective susceptible population size. We find that in case of a 90$\%$ reduction of the effective susceptible population size, strong adherence to self-quarantine still only yields a 25$\%$ reduction of peak infectious numbers when compared to low adherence. This is due to the significant number of asymptomatic infectious individuals in the population.
Collider Physics at HERA
Creators: name: Klein, M.
name: Yoshida, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: From 1992 to 2007, HERA, the first electron-proton collider, operated at cms energies of about 320 GeV and allowed the investigation of deep-inelastic and photoproduction processes at the highest energy scales accessed thus far. This review is an introduction to, and a summary of, the main results obtained at HERA during its operation.
description: A review article: 75 pages, 43 figures
Cephennium fairmairei JAKOBSON 1910
Creators: name: Assing, Volker
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Cephennium
Cephennium fairmairei

description: Cephennium fairmairei JAKOBSON, 1910
Material examined: FRANCE: Hautes - Pyrénées: 4♂♂, 1♀, Col d'Aubisque env., 24.VII.1972, leg. Meybohm (cAss); 1♀, Gavarnie, 30.VI.1976, leg. Meybohm (cAss); 5♂♂, 2♀♀, Gavarnie, Gédre-Toumouse, 22.VII.1972, leg. Meybohm (cAss). Ariège: 11♂♂, 7♀♀, L'Hospitalet, 1300 m, 21.VI.1999, leg. Wolf (cAss). Haute - Garonne: 1♂, Marignac, ForêtdeBurat, 800-1000 m, 20.VI.2004, leg. Wolf (cAss); 6♂♂, 1♀, Bagnères-de-Luchon, Sode / Artigue, ca. 800 m, 17.VI.2004, leg. Wolf (cAss). Pyrénées - Atlantique: 2♂♂, 1♀, Les Eaux-Chaudes, 25.VII.1972, leg. Meybohm (cAss). SPAIN: País Vasco: 1♀, Tolosa env., Regil, 2.VIII.1972 (cAss). Navarra 1♂, Orbaiceta env., 4.VIII.1971 (cAss).
Material examined by C. Besuchet (unpubl.; material deposited in MHNG and numerous other collections): FRANCE: Hautes - Pyrénées: 20 exs., Bagnères-de-Bigorre; 3 exs., Bagnères-de-Bigorre, Fontaine des Fées; 2 exs., Bagnères-de-Bigorre, Le Bédat; 1 ex., Tournay; 3 exs., Grotte d'Asque; 8 exs., Payolle; 24 exs., Cauterets; 5 exs., Aragnouet; 4 exs., Grotte Labastide; 1 ex., La Barthe-de-Neste; 1 ex., Alsasna; 6 exs., locality illegible or not specified. Pyrénées - Atlantique s: 2 exs., Grotte de Sari; 1 ex., Gabas; 1 ex., Forêt d'Iraty; 2 exs., orêt d'Arudy; 4 exs., Grotte Malarode; 1 ex., 9 exs., Louvie-Juzon; 1 ex., Larrau, Ravin d'Ursuia; 1 ex., Sare; 7 exs., locality illegible. Haute - Garonne: 8 exs., Bagnères-de-Luchon, Val d'Arboust du Buysson; 5 exs., Saint-Béat, El Barbier; 5 exs., Montréjeau. Ariège: 1 ex., Bethmale; 1 ex., Castet d'Aleu; 1 ex., Hospitalet; 1 ex., L'Estelas; 1 ex., St. Lary; 3 exs., Massat; 1 ex., Forêt de Bélesta; 1 ex., Grotte Bedeilhac; 1 ex., Aulus; 2 exs., Villeneuve; 1 ex., Seix; 4 exs., locality illegible or not specified. Aude: 6 exs., Belcaire; 2 exs., Nébias; 6 exs., Forêt de Niave; 1 ex., Lavagne. Pyrénées - Orientales: 2exs., Le Vernet; 2exs.,localityillegible. Locality not specified: 37 exs., " Pyrénées ", " Pyrenaeen ", etc. SPAIN: Cataluña: 2 exs., Espinalber; 3 exs., Lleida, Val d'Aran, Canejan; 1 ex., Lleida, Val d'Aran. Navarra: 1 ex., Abourrea Alta. País Vasco: 3 exs., Tolosa env., Mt. Alzo.
The distribution ranges from the eastern Pyrenees to Pais Vasco. In Spain, the species is known from Cataluña, Navarra, and País Vasco. For numerous previously published records and illustrations of the male primary and secondary sexual characters see OROUSSET (2017).
description: Published as part of Assing, Volker, 2021, On the Cephennium fauna of the Iberian Peninsula and the Atlantic Islands (Coleoptera, Staphylinidae, Scydmaeninae), pp. 891-931 in Linzer biologische Beiträge 52 (2) on page 898, DOI: 10.5281/zenodo.5039032
Exotic fully-heavy $Q\bar QQ\bar Q$ tetraquark states in $\mathbf{8}_{[Q\bar{Q}]}\otimes \mathbf{8}_{[Q\bar{Q}]}$ color configuration
Creators: name: Wang, Qi-Nan
name: Yang, Zi-Yan
name: Chen, Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We have systematically calculated the mass spectra for S-wave and P-wave fully-charm $c\bar{c}c\bar{c}$ and fully-bottom $b\bar{b}b\bar{b}$ tetraquark states in the $\mathbf{8}_{[Q\bar{Q}]}\otimes \mathbf{8}_{[Q\bar{Q}]}$ color configuration, by using the moment QCD sum rule method. The masses for the fully-charm $c\bar cc\bar c$ tetraquark states are predicted about $6.3-6.5$ GeV for S-wave channels and $7.0-7.2$ GeV for P-wave channels. These results suggest the possibility that there are some $\mathbf{8}_{[c\bar{c}]}\otimes \mathbf{8}_{[c\bar{c}]}$ components in LHCb's di-$J/ψ$ structures. For the fully-bottom $b\bar{b}b\bar{b}$ system, their masses are calculated around 18.2 GeV for S-wave tetraquark states while 18.4-18.8 GeV for P-wave ones, which are below the $η_bη_b$ and $Υ(1S)Υ(1S)$ two-meson decay thresholds.
description: 9 pages, 3 figures. Accepted by Physical Review D
Systematic corrections to the measured cosmological constant as a result of local inhomogeneity
Creators: name: Vanderveld, R. Ali
name: Flanagan, Eanna E.
name: Wasserman, Ira
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We calculate the systematic inhomogeneity-induced correction to the cosmological constant that one would infer from an analysis of the luminosities and redshifts of Type Ia supernovae, assuming a homogeneous universe. The calculation entails a post-Newtonian expansion within the framework of second order perturbation theory, wherein we consider the effects of subhorizon density perturbations in a flat, dust dominated universe. Within this formalism, we calculate luminosity distances and redshifts along the past light cone of an observer. The resulting luminosity distance-redshift relation is fit to that of a homogeneous model in order to deduce the best-fit cosmological constant density Omega_Lambda. We find that the luminosity distance-redshift relation is indeed modified, by a small fraction of order 10^{-5}. When fitting this perturbed relation to that of a homogeneous universe, we find that the inferred cosmological constant can be surprisingly large, depending on the range of redshifts sampled. For a sample of supernovae extending from z=0.02 out to z=0.15, we find that Omega_Lambda=0.004. The value of Omega_Lambda has a large variance, and its magnitude tends to get larger for smaller redshifts, implying that precision measurements from nearby supernova data will require taking this effect into account. However, we find that this effect is likely too small to explain the observed value of Omega_Lambda=0.7. There have been previous claims of much larger backreaction effects. By contrast to those calculations, our work is directly related to how observers deduce cosmological parameters from astronomical data.
description: 28 pages, 3 figures, revtex4; v2: corrected comments and the section on previous work; v3: clarified wording. References added
Apery limits and special values of L-functions
Creators: name: Yang, Yifan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F67, 11F11, 11F66, 11M06

description: We describe a general method to determine the Apery limits of a differential equation that have a modular-function origin. As a by-product of our analysis, we discover a family of identities involving the special values of L-functions associated with modular forms. The proof of these identities is independent of differential equations and Apery limits.
description: 24 pages
Association of systemic inflammation and coagulation biomarkers with source-specific PM2.5 mass concentrations among elderly and young subjects in central Tehran
Creators: name: Altuwayjiri, Abdulmalik
name: Taghvaee, Sina
name: Amirhosein Mousavi
name: Sowlat, Mohammad H.
name: Hassanvand, Mohammad Sadegh
name: Kashani, Homa
name: Faridi, Sasan
name: Yunesian, Masud
name: Naddafi, Kazem
name: Constantinos Sioutas
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences

description: In this study, we investigated the association between short-term exposure to different sources of fine particulate matter (PM2.5) and biomarkers of coagulation and inflammation in two different panels of elderly and healthy young individuals in central Tehran. Five biomarkers, including white blood cells (WBC), high sensitive C-reactive protein (hsCRP), tumor necrosis factor-soluble receptor-II (sTNF-RII), interleukin-6 (IL-6), and von Willebrand factor (vWF) were analyzed in the blood samples drawn every 8 weeks from the subjects between May 2012 and May 2013. The studied populations consisted of 44 elderly individuals at a retirement home as well as 40 young adults residing at a school dormitory. PMF-resolved source-specific PM2.5 mass concentrations and biomarker levels were used as the input to the linear mixed-effects regression model to evaluate the impact of exposure to previously identified PM sources at retirement home and school dormitory in two time lag configurations: lag 1-3 (1-3 days before the blood sampling), and lag 4-6 (4-6 days before the blood sampling). Our analysis of the elderly revealed positive associations of all biomarkers (except hsCRP) with particles of secondary origin in both time lags, further corroborating the toxicity of secondary aerosols formed by photochemical processing in central Tehran. Moreover, industrial emissions, and road dust particles were positively associated with WBC, sTNF-RII and IL-6 among seniors, while vehicular emissions exhibited positive associations with all biomarkers in either first- or second-time lag. In contrast, most of the PM2.5 sources showed insignificant associations with biomarkers of inflammation in the panel of healthy young subjects. Therefore, findings from this study indicated that various PM2.5 sources increase the levels of inflammation and coagulation biomarkers, although the strength and significance of these associations vary depending on the type of PM sources, demographic characteristics, and differ across the different time lags.
QCD at Non-Zero Density : Lattice Results
Creators: name: Lombardo, M. P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: A concise review of the progress of lattice calculations at non-zero density since QM2006 is given, with emphasis on the high baryon density, low temperature domain. Possibilities for exploring densities higher than those studied by standard techniques are analysed. The phase transitions of cold, dense matter, where the sign problem remains severe, are discussed in the context of QCD-like models and approximations to QCD.
description: 8 pages, 8 figures. Plenary talk at Quark Matter 2008: 20th International Conference on Ultra-Relativistic Nucleus Nucleus Collisions (QM2008), Jaipur, India, 4-10 Feb 2008. Pdflatex problem fixed