cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Lasianthus rabilii Craib 1933
Creators: name: Napiroon, Tiwtawat
name: Chayamarit, Kongkanda
name: Dawson, Sally
name: Till, Walter
name: Balslev, Henrik
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Gentianales
Rubiaceae
Lasianthus
Lasianthus rabilii

description: 48. Lasianthus rabilii Craib (1933:24). Type: ― THAILAND. Trang, Kao Kao (possibly a misspelling for Khao Keaw), 4 August 1929, Rabil 364 (holotype K000777012!; isotype BK257393!, E00327850 image!).
T hailand: ―Only known from the type collection.
Distribution: ―Endemic to Thailand (Peninsular).
Ecology: ―Evergreen forest, edge of forest.
Notes: ― Lasianthus rabilii is known only from the type specimens and original description. It is similar to L. constrictus but it differs by having leaves that are oblong, oblong-oblanceolate or elliptic-oblanceolate (not lanceolate to oblong-lanceolate), 7‒13 × 3‒5 (not 8‒13 × 3‒4) cm, adaxially glabrous, abaxially sparsely hirsute (not sparsely strigose), it has triangular stipules that are 3 (not 3–4) mm long and sparely hirsute (not sparsely strigose), fresh fruits black (not blue), drupes globose with base narrowed (not ovoid or ellipsoid), 6‒7 (not 8–10) mm diameter when dried, with 4 (not 2‒4) pyrenes.
description: Published as part of Napiroon, Tiwtawat, Chayamarit, Kongkanda, Dawson, Sally, Till, Walter & Balslev, Henrik, 2020, A synopsis of Lasianthus (Lasiantheae, Rubiaceae) in Thailand and two additional new species, pp. 1-38 in Phytotaxa 439 (1) on page 26, DOI: 10.11646/phytotaxa.439.1.1, http://zenodo.org/record/13873503
Multiband gravitational wave cosmology with stellar origin black hole binaries
Creators: name: Muttoni, Niccolò
name: Mangiagli, Alberto
name: Sesana, Alberto
name: Laghi, Danny
name: Del Pozzo, Walter
name: Izquierdo-Villalba, David
name: Rosati, Mattia
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: Massive stellar origin black hole binaries (SBHBs), originating from stars above the pair-instability mass gap, are primary candidates for multiband gravitational wave (GW) observations. Here we study the possibility to use them as effective dark standard sirens to constrain cosmological parameters. The long lasting inspiral signal emitted by these systems is accessible by the future $Laser \; Interferometer \; Space \; Antenna$ (LISA), while the late inspiral and merger are eventually detected by third generation ground-based telescopes such as the $Einstein \; Telescope$ (ET). The direct measurement of the luminosity distance and the sky position to the source, together with the inhomogeneous redshift distribution of possible host galaxies, allow us to infer cosmological parameters by probabilistic means. The efficiency of this statistical method relies in high parameter estimation performances. We show that this multiband approach allows a precise determination of the Hubble constant H$_0$ with just ${\cal O}(10)$ detected sources. For selected SBHB population models, assuming $4$ ($10$) years of LISA observations, we find that H$_0$ is typically determined at $\sim 2\%$ ($\sim 1.5\%$), whereas $Ω_m$ is only mildly constrained with a typical precision of $30\%$ ($20\%$). We discuss the origin of some outliers in our final estimates and we comment on ways to reduce their presence.
description: Updated results. 18 pages, 9 figures. Accepted for publication in PRD
Torque and conventional spin-Hall currents in two-dimensional spin-orbit coupled systems: Universal relation and hyper-selection rule
Creators: name: Chen, Tsung-Wei
name: Guo, Guang-Yu
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate torque and also conventionally defined spin-Hall currents in two-dimensional (2D) spin-orbit coupled systems of spin-1/2 particles within the linear response Kubo formalism. We obtain some interesting relations between the conventional and torque spin-Hall conductivities for the generic effective Hamiltonian $H_0=ε_k^0+A(k)σ_x-B(k)σ_y$, where $A(k)=η^A_ik_i+η^A_{ij}k_ik_j+η^A_{ijl}k_ik_jk_l+...$, $B(k)=η^B_ik_i+η^B_{ij}k_ik_j+η^B_{ijl}k_ik_jk_l+...$, and $η$'s are the specific system-dependent coefficients. Specifically, we find that in the intrinsic case the magnitude of torque spin-Hall conductivity $σ^{τ_z}_{xy}(0)$ is always twice larger than the conventional spin-Hall conductivity $σ^{s_z}_{xy}(0)$, and the two conductivities have the opposite signs, i.e., $σ^{τ_z}_{xy}(0)=-2σ^{s_z}_{xy}(0)$. This universal relation also holds in the presence of an uniform in-plane magnetic field. We also find that if the energy dispersion is rotationally invariant, there exists a hyper-angular momentum $I_z = (k\times \partialθ/\partial k)_z s_z + L_z$ which is conserved. Furthermore, the hyper-angular momentum current $$ vanishes, and this leads to a hyper selection rule for the conventional spin-Hall current.
description: 10 pages, 5 figures
Around the Pair Instability Valley - Massive SN Progenitors
Creators: name: Waldman, Roni
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The discovery of the extremely luminous supernova SN 2006gy, possibly interpreted as a pair instability supernova, renewed the interest in very massive stars. We explore the evolution of these objects, which end their life as pair instability supernovae or as core collapse supernovae with relatively massive iron cores, up to about $3 M_\odot$.
description: 4 pages, 3 figures, to appear in proceedings of IAU symp. no. 252 - The art of modeling stars in the 21st century, Sanya, China 2008
Lasianthus rhinocerotis subsp. xishuangbannaensis Zhu & Wang 2002, n.v.
Creators: name: Napiroon, Tiwtawat
name: Chayamarit, Kongkanda
name: Dawson, Sally
name: Till, Walter
name: Balslev, Henrik
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Gentianales
Rubiaceae
Lasianthus
Lasianthus rhinocerotis
Lasianthus rhinocerotis blume subsp. xishuangbannaensis zhu & wang (2002:282)

description: 51b. Lasianthus rhinocerotis Blume subsp. xishuangbannaensis Zhu & Wang (2002:282). Type: ― CHINA: Yunnan, Jinghong, H. Zhu & H. Wang 98-11-01 (holotype HITBC n.v.).
Thailand: —NORTHERN: Nan: Doi Phu Kha National Park, 13 December 1990, D. D. Tirvengadum et al. s.n. (AAU, BKF, PSU).
Distribution: ― China (Yunnan), Thailand (Northern).
Ecology: —Hill evergreen forest at an elevation of 1200‒1500 m.
Notes: ― Lasianthus rhinocerotis subsp. xishuangbannaensis differs from the typical subspecies in having sparsely villous or glabrescent branches, branchlets, petioles, leaf margin and leaf veins, and it has 7‒8 pairs of lateral veins and the calyx is obconical, 12 mm long hirsute, the calyx lobes are 8 mm long, and the calyx tube is 4 mm long. These observations were made on the same herbarium specimens at AAU that were examined by Zhu (2001) when Lasianthus was revised the first time for Thailand. The typical subspecies occurs in Peninsular Thailand, Malaysia and Indonesia (Sumatra, Java, and Kalimantan). This subspecies only occurs in northern Thailand and China (Yunnan).
description: Published as part of Napiroon, Tiwtawat, Chayamarit, Kongkanda, Dawson, Sally, Till, Walter & Balslev, Henrik, 2020, A synopsis of Lasianthus (Lasiantheae, Rubiaceae) in Thailand and two additional new species, pp. 1-38 in Phytotaxa 439 (1) on page 27, DOI: 10.11646/phytotaxa.439.1.1, http://zenodo.org/record/13873503
Reducible Families of Curves with Ordinary Multiple Points on Surfaces in Projective Three-Space
Creators: name: Keilen, Thomas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H10; 14H15; 14H20

description: In math.AG/0108089, math.AG/0212090 and math.AG/0308247 we gave numerical conditions which ensure that an equisingular family is irreducible respectively T-smooth. Combining results by Greuel, Lossen and Shustin and an idea from math.AG/9802009 we give in the present paper series of examples of families of irreducible curves on surfaces in projective three-space with only ordinary multiple points which are reducible and where at least one component does not have the expected dimension. The examples show that for families of curves with ordinary multiple points the conditions for T-smoothness in math.AG/0308247 have the right asymptotics.
description: 5 pages
The yielding of amorphous solids at finite temperatures
Creators: name: Ferrero, Ezequiel E.
name: Kolton, Alejandro B.
name: Jagla, Eduardo A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We analyze the effect of temperature on the yielding transition of amorphous solids using different coarse-grained model approaches. On one hand we use an elasto-plastic model, with temperature introduced in the form of an Arrhenius activation law over energy barriers. On the other hand, we implement a Hamiltonian model with a relaxational dynamics, where temperature is introduced in the form of a Langevin stochastic force. In both cases, temperature transforms the sharp transition of the athermal case in a smooth crossover. We show that this thermally smoothed transition follows a simple scaling form that can be fully explained using a one-particle system driven in a potential under the combined action of a mechanical and a thermal noise, the stochastically-driven Prandtl-Tomlinson model. Our work harmonizes the results of simple models for amorphous solids with the phenomenological $\sim T^{2/3}$ law proposed by Johnson and Samwer [Phys. Rev. Lett. 95, 195501 (2005)] in the framework of experimental metallic glasses yield observations, and extend it to a generic case. Finally, our results strengthen the interpretation of the yielding transition as an effective mean-field phenomenon.
description: 16 pages, 11 figures
Hard Break-Up of Two-Nucleons and QCD Dynamics of NN Interaction
Creators: name: Sargsian, Misak M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discus recent developments in theory of high energy two-body break-up of few-nucleon systems. The characteristics of these reactions are such that the hard two-body quasielastic subprocess can be clearly separated from the accompanying soft subprocesses. We discuss in details the hard rescattering model(HRM) in which hard photodisintegration develops in two stages. At first, photon knocks-out an energetic quark which rescatters subsequently with a quark of the other nucleon. The latter provides a mechanism of sharing the initial high momentum of the photon between two outgoing nucleons. This final state hard rescattering can be expressed through the hard NN scattering amplitude. Within HRM we discuss hard break-up reactions involving D and 3He targets and demonstrate how these reactions are sensitive to the dynamics of hard pn and pp interaction. Another development of HRM is the prediction of new helicity selection mechanism for hard two-body reactions, which was apparently confirmed in the recent JLab experiment.
description: Invited talk at 6th International Conference on Perspective in Hadronic Physics, Trieste, Italy, 12-18 May 2008. Submitted to AIP Conf.Proc
Factorization theorems for exclusive heavy-quarkonium production
Creators: name: Bodwin, Geoffrey T.
name: Tormo, Xavier Garcia i
name: Lee, Jungil
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We outline the proofs of the factorization theorems for exclusive two-body charmonium production in B-meson decay and e^+e^- annihilation to all orders in perturbation theory in quantum chromodynamics. We find that factorized expressions hold up to corrections of order m_c/m_b in B-meson decay and corrections of order m_c^2/s in e^+e^- annihilation, where m_c is the charm-quark mass, m_b is the bottom-quark mass, and root-s is the e^+e^- center-of-momentum energy.
description: 4 pages, 2 figures
Some obstructed equisingular families of curves on surfaces in projective three-space
Creators: name: Markwig, Thomas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H10; 14H15; 14H20

description: Very few examples of obstructed equsingular families of curves on surfaces other than the projective plane are known. Combining results from Westenberger and Hirano with an idea from math.AG/9802009 we give in the present paper series of examples of families of irreducible curves with simple singularities on surfaces in projective three-space which are not T--smooth, i.e. do not have the expected dimension, and we compare this with conditions (showing the same asymptotics) which ensure the existence of a T--smooth component.
description: 8 pages
Thermomechanical Response of Advanced Materials under Quasi-Instantaneous Heating
Creators: name: Carra, Federico
Publisher: name: Zenodo
Year: 2017

description: This PhD thesis focuses on the latter scenario, where the heat deposition rate is high enough to lead to the origination of stress waves, propagating from the locally-heated zone to the surrounding of the structure, and superposing with the quasi-static stress field.
Lasianthus roosianus Zhu 2002
Creators: name: Napiroon, Tiwtawat
name: Chayamarit, Kongkanda
name: Dawson, Sally
name: Till, Walter
name: Balslev, Henrik
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Gentianales
Rubiaceae
Lasianthus
Lasianthus roosianus

description: 53. Lasianthus roosianus Zhu (2002:576). Type: ― THAILAND. Lampang, Muang Pan district, Jae Sawn National Park, 24 June 1996, J. F. Maxwell 96-879 (holotype L0310524!; isotypes BKF!, CMUB!).
T hailand: ―Only known from the type collection.
Distribution: ―Endemic to Thailand (Northern).
Ecology: ―Evergreen forest, growing on granite bedrock at an elevation of 900 m. Flowering and fruiting in June.
Notes: ―In Thailand, Lasianthus roosianus seems closely related to L. hookeri but it differs by having leaves lanceolate-elliptic (not oblong), 17‒19 × 3‒4.5 (not 12‒24 × 3‒6) cm, leaf blade chartaceous (not chartaceous or subcoriaceous), adaxially glabrous, abaxially brown-tomentose (not puberulous), calyx campanulate, brown-tomentose (not subglabrous or puberulous), drupes subglobose, brown-tomentose (not subglabrous or puberulent), pyrenes 6 (not 5). Although the specimens of L. roosianus in the Thai herbaria were rather difficult to discover and although we did not find this species in the field, we maintain this species based on the morphological characters mentioned in the protologue. It is also an accepted name in the World Checklist of Selected Plant Families (http://wcsp.science.kew. org/).
description: Published as part of Napiroon, Tiwtawat, Chayamarit, Kongkanda, Dawson, Sally, Till, Walter & Balslev, Henrik, 2020, A synopsis of Lasianthus (Lasiantheae, Rubiaceae) in Thailand and two additional new species, pp. 1-38 in Phytotaxa 439 (1) on page 28, DOI: 10.11646/phytotaxa.439.1.1, http://zenodo.org/record/13873503
The relative importance of food availability and predation to the juvenile survival of Diacyclops thomasi
Creators: name: Bowerman, Joy E.
Publisher: name: University of British Columbia
Year: 2010

description: In situ enclosure experiments were conducted in Placid Lake, British Columbia to determine the effect of food availability and predation on the naupliar survival of D. thomasi. These experiments revealed that food limitation due to competition from the grazing assemblage, interspecific predation by D. kenai and intraspecific predation by D. thomasi adults could all substantially affect the survival of D. thomasi nauplii. Subsequent feeding studies showed that D. kenai at lake densities were capable of preying on nauplii at a rate of 20% of nauplii per predator per day and this seemed to account for most of the mortality of D. thomasi nauplii in enclosures with D. kenai. When these results were extrapolated to two oligotrophic montane lakes, cannibalism was judged to be the major mortality agent. In the Placid Lake community, the effect of interspecific predation and competition acted only earlier and later in the season respectively, and the magnitude of their effect was influenced by year to year variation in weather. In Eunice Lake, in which D. thomasi has recently become a community dominant, experimental results suggested that D. kenai had previously limited D. thomasi in the lake. The introduction of cutthroat trout and a mild winter seemed to be responsible for the decline in D. kenai and concurrent increase in D. thomasi.
pra2.407.pdf
Creators: name: Dvir, Nim
Publisher: name: figshare
Year: 2021
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences
subject: 80703 Human Information Behaviour
subject: FOS: Media and communications
subject: 80107 Natural Language Processing
subject: 80709 Social and Community Informatics
subject: 80109 Pattern Recognition and Data Mining

description: User engagement is considered critical to technology interactions. The userengagement scale (UES) is a measurement tool for engagement based on self-reported measures. However, UES does not emphasize interactions with infor-mation and focus solely on perception. This visual presentation describes anovel conceptual and measurement framework to systematically describe andevaluate information engagement (IE). Following a comprehensive literaturereview, we conceptualize The process of information engagement (PIE) whichincludes three dimensions: (a) Participation - users' investment in the infor-mation interaction, including information retrieval and behavioral responses -measured through information exchange (b) Perception - users' relation tothe information, the level of emotional involvement, interest and intent in theinformation (c) Perseverance – users' retention of the information, the qual-ity of the integration and influence of the information. The findings providefoundation for future work to conceptualize and operationalize IE measure-ment across a range of situations.
Photometric vs dynamical stellar masses and their impact on scaling relations in nearby disc galaxies
Creators: name: Marasco, A.
name: Fall, S. M.
name: Di Teodoro, E. M.
name: Piña, P. E. Mancera
Publisher: name: arXiv
Year: 2025
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The study of scaling relations of disc galaxies and their evolution across cosmic time requires accurate estimates of galaxy stellar masses $M_\star$ over broad redshift ranges. While photometric $M_\star$ estimates ($M_{\rm phot}$) based on spectral energy distribution (SED) modelling methods are employed routinely at high-$z$, it is unclear to what extent these are compatible with dynamical $M_\star$ estimates ($M_{\rm dyn}$), available for nearby galaxies. Here we compare newly determined, SED-model based $M_{\rm phot}$ with previously obtained $M_{\rm dyn}$ inferred via rotation curve decomposition techniques in a sample of $\sim100$ nearby galaxies from the SPARC database. We find that the two mass estimates show a systematic agreement at the $\sim12\%$ ($0.05$ dex) level and a $\sim55\%$ ($0.22$ dex) scatter across almost $5$ dex in $M_\star$. Our $M_{\rm phot}$ estimates correspond to mass-to-light ratios in the $3.6μ$m band that increase gradually with $3.6μ$m luminosity, as a consequence of the earlier (later) assembly history of high-mass (low-mass) disc galaxies. The choice of using either $M_{\rm dyn}$ or $M_{\rm phot}$ has only a marginal impact on the slope and zero-point of the Tully-Fisher and Fall relations: the observed orthogonal scatter in both relations is virtually the same for the two methods, and indistinguishable from that derived using a constant mass-to-light ratio in the $3.6μ$m band. $M_\star$ estimates based on the assumption that discs are marginally stable lead to the largest scatter in the scaling relations.
description: 18 pages, 9 figures, 3 Tables. Accepted for publication by A&A
Understanding the two-step nucleation of iron at Earth's inner core conditions: a comparative molecular dynamics study
Creators: name: Gao, Chen
name: Ho, Kai-Ming
name: Wentzcovitch, Renata M.
name: Sun, Yang
Publisher: name: arXiv
Year: 2025
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Metastable phases can lead to multistep nucleation processes, influencing the liquid-to-solid transition in various systems. In this study, we investigate the homogeneous nucleation of iron's crystalline phases under Earth's inner core conditions, employing two previously developed interatomic potentials. We compare the thermodynamic and kinetic properties of iron relevant to the nucleation as predicted by these potentials. While the potentials differ in their predictions of melting temperature by a few hundred Kelvin, they show a consistent description of the relative Gibbs free energy between solid and liquid phases with respect to the undercooling. Both potentials also predict that the metastable bcc phase exhibits a significantly higher nucleation rate than the hcp phase over a wide range of undercooling temperatures below the melting point. This substantially lowers the undercooling thresholds required for the initial nucleation of Earth's inner core. The results validate the commonality of the two-step nucleation mechanism of iron under Earth's inner core conditions for two different potentials, providing a foundation for future studies about the influence of other elements on the nucleation of Earth's core.
description: PRB in press
Butterflies I: morphisms of 2-group stacks
Creators: name: Aldrovandi, Ettore
name: Noohi, Behrang
Publisher: name: arXiv
Year: 2008
Subjects: subject: Category Theory (math.CT)
subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: Weak morphisms of non-abelian complexes of length 2, or crossed modules, are morphisms of the associated 2-group stacks, or gr-stacks. We present a full description of the weak morphisms in terms of diagrams we call butterflies. We give a complete description of the resulting bicategory of crossed modules, which we show is fibered and biequivalent to the 2-stack of 2-group stacks. As a consequence we obtain a complete characterization of the non-abelian derived category of complexes of length 2. Deligne's analogous theorem in the case of Picard stacks and abelian sheaves becomes an immediate corollary. Commutativity laws on 2-group stacks are also analyzed in terms of butterflies, yielding new characterizations of braided, symmetric, and Picard 2-group stacks. Furthermore, the description of a weak morphism in terms of the corresponding butterfly diagram allows us to obtain a long exact sequence in non-abelian cohomology, removing a preexisting fibration condition on the coefficients short exact sequence.
description: 89 pages, comments on weak morphisms moved to new section 4.2, appendix A removed
Spiking Neural Networks for Visual Place Recognition via Weighted Neuronal Assignments
Creators: name: Hussaini, Somayeh
name: Milford, Michael
name: Fischer, Tobias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Spiking neural networks (SNNs) offer both compelling potential advantages, including energy efficiency and low latencies and challenges including the non-differentiable nature of event spikes. Much of the initial research in this area has converted deep neural networks to equivalent SNNs, but this conversion approach potentially negates some of the advantages of SNN-based approaches developed from scratch. One promising area for high-performance SNNs is template matching and image recognition. This research introduces the first high-performance SNN for the Visual Place Recognition (VPR) task: given a query image, the SNN has to find the closest match out of a list of reference images. At the core of this new system is a novel assignment scheme that implements a form of ambiguity-informed salience, by up-weighting single-place-encoding neurons and down-weighting "ambiguous" neurons that respond to multiple different reference places. In a range of experiments on the challenging Nordland, Oxford RobotCar, SPEDTest, Synthia, and St Lucia datasets, we show that our SNN achieves comparable VPR performance to state-of-the-art and classical techniques, and degrades gracefully in performance with an increasing number of reference places. Our results provide a significant milestone towards SNNs that can provide robust, energy-efficient, and low latency robot localization.
description: 8 pages, 6 figures, IEEE Robotics and Automation Letters (RA-L), also accepted to IEEE International Conference on Robotics and Automation (ICRA 2022)
Tracer dynamics in one dimensional gases of active or passive particles
Creators: name: Banerjee, Tirthankar
name: Jack, Robert L.
name: Cates, Michael E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider one-dimensional systems comprising either active run-and-tumble particles (RTPs) or passive Brownian random walkers. These particles are either noninteracting or have hardcore exclusions. We study the dynamics of a single tracer particle embedded in such a system - this tracer may be either active or passive, with hardcore exclusion from environmental particles. In an active hardcore environment, both active and passive tracers show long-time subdiffusion: displacements scale as $t^{1/4}$ with a density-dependent prefactor that is independent of tracer type, and differs from the corresponding result for passive-in-passive subdiffusion. In an environment of noninteracting active particles, the passive-in-passive results are recovered at low densities for both active and passive tracers, but transient caging effects slow the tracer motion at higher densities, delaying the onset of any $t^{1/4}$ regime. For an active tracer in a passive environment, we find more complex outcomes, which depend on details of the dynamical discretization scheme. We interpret these results by studying the density distribution of environmental particles around the tracer. In particular, sticking of environment particles to the tracer cause it to move more slowly in noninteracting than in interacting active environments, while the anomalous behaviour of the active-in-passive cases stems from a `snowplough' effect whereby a large pile of diffusive environmental particles accumulates in front of a RTP tracer during a ballistic run.
description: 32 pages, 26 figures
Low mode approximation in the axion magnetohydrodynamics
Creators: name: Dvornikov, Maxim
Publisher: name: arXiv
Year: 2025
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We study the evolution of interacting large scale magnetic and axionic fields. Based on the new induction equation accounting for the contribution of spatially inhomogeneous axions, we consider the evolution of a magnetized spherical axion structure. Using the thin layer approximation, we derive the system of the nonlinear ordinary differential equations for harmonics of poloidal and toroidal magnetic fields, as well as for the axion field. In this system, we account for up to four modes. Considering this small and dense axion clump to be in a solar plasma, we numerically simulate the evolution of magnetic fields. We obtain that the behavior of magnetic fields depends on the initial fields configuration. Moreover, we find an indication on a magnetic field instability in the magnetohydrodynamics with inhomogeneous axions.
description: 13 pages, 10 eps figures; contribution to the proceedings of 7th International Conference on Particle Physics and Astrophysics (Moscow, Russia, October 22-25, 2024); to be published in the special issue of Int.J.Mod.Phys.D
Quantum Thetas on Noncommutative T^d with General Embeddings
Creators: name: Chang-Young, Ee
name: Kim, Hoil
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper we construct quantum theta functions over noncommutative T^d with general embeddings. Manin has constructed quantum theta functions from the lattice embedding into vector space x finite group. We extend Manin's construction of quantum thetas to the case of general embedding of vector space x lattice x torus. It turns out that only for the vector space part of the embedding there exists the holomorphic theta vector, while for the lattice part there does not. Furthermore, the so-called quantum translations from embedding into the lattice part become non-additive, while those from the vector space part are additive.
description: LaTeX 22 pages
Lasianthus sarmentosus Craib 1933
Creators: name: Napiroon, Tiwtawat
name: Chayamarit, Kongkanda
name: Dawson, Sally
name: Till, Walter
name: Balslev, Henrik
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Gentianales
Rubiaceae
Lasianthus
Lasianthus sarmentosus

description: 54. Lasianthus sarmentosus Craib (1933:25). Type: ― THAILAND. Chanthaburi, Khao Soi Dao, 11 December 1924, A. F. G. Kerr 9614 (holotype K000777009!; isotype E00327849, BM001191351, K000777008, L0305533 images!). (Figure 3 Ae).
T hailand: —SOUTH-EASTERN. Chanthaburi: Khao Soi Dao, 28 November 1979, T. Shimizu et al. T23865 (BKF), 18 November 1995, C. Niyomdham 4488 (AAU, BKF).
Distribution: ―Endemic to Thailand (South-Eastern).
Ecology: —Moist evergreen forest, in shaded places near streams at an elevation of 700‒1000 m. Flowering in June‒July and fruiting in August‒October.
Notes: ― Lasianthus sarmentosus can easily be recognized in the field by its mature fresh fruits that are pale-green which separates it from others species which mostly have blue fruits. However, it is similar to L. fordii from which it differs by having leaf blades membranaceous (not chartaceous or subcoriaceous), 3‒4 (not 4‒6) pairs of lateral veins, drupes that are globose and glabrous, 8‒10 (not 5‒6) mm diameter, and. with 3‒4 (not 5‒6) pyrenes.
description: Published as part of Napiroon, Tiwtawat, Chayamarit, Kongkanda, Dawson, Sally, Till, Walter & Balslev, Henrik, 2020, A synopsis of Lasianthus (Lasiantheae, Rubiaceae) in Thailand and two additional new species, pp. 1-38 in Phytotaxa 439 (1) on page 28, DOI: 10.11646/phytotaxa.439.1.1, http://zenodo.org/record/13873503
The Figure with a Bow in Gandhāran Great Departure Scenes. Some New Readings
Creators: name: Pons, Jessie
Publisher: name: Ruhr-Universität Bochum
Year: 2014
Subjects: Gandhāra; Buddhist iconography; great departure; Vaiśravaṇa-Kubera; multiple identities; Kushan era

description: The figure holding a bow on Gandhāran illustrations of the Bodhisattva’s departure from Kapilavastu has been the subject of controversy. First identified as Māra and Indra, the interpretation proposed by K. Tanabe that the protagonist is Vaiśravaṇa-Kubera rallied broader consensus. The present reassessment takes into account the multi-cultural and multi-religious context of production of the images, namely the Kushan era, to offer additional readings of the Gandhāran figure. The approach is two-fold. The examination of written and visual traditions of representing the episode is complemented by the analysis of the Gandhāran iconography in light of material from various cultural strands which came into contact in the region. As a final step, the article considers possible logics which might have constrained the construction of the Gandhāran portrayals and tests the hypothesis that further divinities from religious trends coeval in Gandhāra may be recognized under the guises of the bow-holder.
description: Entangled Religions, Vol 1 (2014)
Running vacuum and H^4-inflation
Creators: name: Peracaula, Joan Solà
name: Moreno-Pulido, Cristian
name: González-Fuentes, Alex
Publisher: name: arXiv
Year: 2025
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent studies of QFT in cosmological spacetime indicate that the speeding up of the present universe may not just be associated with a rigid cosmological term but with a running one that evolves with the expansion rate: $Λ=Λ(H)$. This running is inherited from the cosmic evolution of the vacuum energy density (VED), $ρ_{\rm vac}$, which is sensitive to quantum effects in curved spacetime that ultimately trigger that running. The VED is a function of the Hubble rate and its time derivatives: $ρ_{\rm vac}=ρ_{\rm vac}(H, \dot{H},\ddot{H},...)$. Two nearby points of the cosmic evolution during the FLRW epoch are smoothly related as $δρ_{\rm vac}\sim {\cal O}(H^2)$. In the very early universe, in contrast, the higher powers of the Hubble rate take over and bring about a period of fast inflation. They originate from quantum effects on the effective action of vacuum, which we compute. Herein we focus on the lowest possible power for inflation to occur: $H^4$. During the inflationary phase, $H$ remains approximately constant and very large. Subsequently, the universe enters the usual FLRW radiation epoch. This new mechanism (`RVM-inflation') is not based on any supplementary `inflaton' field, it is fueled by pure QFT effects on the dynamical background and is different from Starobinsky's inflation, in which $H$ is never constant.
description: Version accepted in Universe. Typos corrected, extended discussion and references added
Chiral coordinate Bethe ansatz for phantom eigenstates in the open XXZ spin-$\frac12$ chain
Creators: name: Zhang, Xin
name: Kluemper, Andreas
name: Popkov, Vladislav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We construct the coordinate Bethe ansatz for all eigenstates of the open spin-$\frac12$ XXZ chain that fulfill the phantom roots criterion (PRC). Under the PRC, the Hilbert space splits into two invariant subspaces and there are two sets of homogeneous Bethe ansatz equations (BAE) to characterize the subspaces in each case. We propose two sets of vectors with chiral shocks to span the invariant subspaces and expand the corresponding eigenstates. All the vectors are factorized and have symmetrical and simple structures. Using several simple cases as examples, we present the core elements of our generalized coordinate Bethe ansatz method. The eigenstates are expanded in our generating set and show clear chirality and certain symmetry properties. The bulk scattering matrices, the reflection matrices on the two boundaries and the BAE are obtained, which demonstrates the agreement with other approaches. Some hypotheses are formulated for the generalization of our approach.
description: 12 pages, 1 Figure
Closed conformal Killing-Yano tensor and uniqueness of generalized Kerr-NUT-de Sitter spacetime
Creators: name: Houri, Tsuyoshi
name: Oota, Takeshi
name: Yasui, Yukinori
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The higher-dimensional Kerr-NUT-de Sitter spacetime describes the general rotating asymptotically de Sitter black hole with NUT parameters. It is known that such a spacetime possesses a rank-2 closed conformal Killing-Yano (CKY) tensor as a ``hidden'' symmetry which provides the separation of variables for the geodesic equations and Klein-Gordon equations. We present a classification of higher-dimensional spacetimes admitting a rank-2 closed CKY tensor. This provides a generalization of the Kerr-NUT-de Sitter spacetime. In particular, we show that the Kerr-NUT-de Sitter spacetime is the only spacetime with a non-degenerate CKY tensor.
description: 24 pages, LaTeX; v2: references added, published version
Lasianthus saxorum Craib 1933
Creators: name: Napiroon, Tiwtawat
name: Chayamarit, Kongkanda
name: Dawson, Sally
name: Till, Walter
name: Balslev, Henrik
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Gentianales
Rubiaceae
Lasianthus
Lasianthus saxorum

description: 55. Lasianthus saxorum Craib (1933:25). Type: ― THAILAND. Loei, Phu Kradung, 10 February 1931, A. F. G. Kerr 20055 (holotype K000777007!; isotype BK257395!).
Thailand: ―NORTH-EASTERN. Loei: Phu Kradung National Park, 7‒9 November 1970, C. Charoenphol, K. Larsen & E. Warncke 4813 (AAU, BKF, K), 29 December 1971, C. F. van Beusekom et al. 4525 (BKF, K), 16 November 1979, T. Shimizu et al. T23087 (BKF), 16 November 1979, T. Shimizu et al. T23181 (BKF), 31 August 1988, H. Takahashi & M. N. Tamura T60558 (BKF, KYO), 31 August 1988, N. Fukuoka T63750 (BKF).
Distribution: ―Endemic to Thailand (North-Eastern).
Ecology: ―Hill evergreen forest, in shaded places at an elevation of 1000‒1200 m. Flowering in February.
Notes: ― Lasianthus saxorum is close to L. fordii and L. lucidus. It differs from L. fordii by having relatively small leaves that are oblong-elliptic or oblong-lanceolate (not ovate-oblong), 7‒8 × 2‒3 (not 6‒10 × 3‒5) cm, the apex is mostly caudate-acuminate (not acuminate or cuspidate-acuminate), the base is cuneate and slightly oblique (not acute or obtuse), the petioles are usually less than 5 (not 8‒10) mm long, and the drupes are ovoid and narrowed at the base(not globose), 3‒3.5 (not 5‒6 mm) diameter. It differs from L. lucidus by being appressed-pubescent (not glabrous) on mature branches and branchlets, having leaf blades that are coriaceous or subcoriaceous (not mostly membranaceous), the calyx is pubescent (not glabrous or subglabrous) and campanulate (not broad campanulate) with 0.5 (not. 0.2) mm long tube and 0.2 (not 2–3 mm) mm long lobes, the corolla is sparsely appressed-pubescent (not strigose) outside and pilose (not villous) inside, and the drupes are ovoid (not globose) and puberulous (not glabrous). In addition, L. saxorum is similar to L. hispidulus on herbarium specimens but it differ from L. saxorum by having a corolla that is pubescent on the outside and drupes that are subglobose.
description: Published as part of Napiroon, Tiwtawat, Chayamarit, Kongkanda, Dawson, Sally, Till, Walter & Balslev, Henrik, 2020, A synopsis of Lasianthus (Lasiantheae, Rubiaceae) in Thailand and two additional new species, pp. 1-38 in Phytotaxa 439 (1) on page 28, DOI: 10.11646/phytotaxa.439.1.1, http://zenodo.org/record/13873503
Rank-based verification for long-term face tracking in crowded scenes
Creators: name: Barquero, Germán
name: Hupont, Isabelle
name: Fernández, Carles
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Most current multi-object trackers focus on short-term tracking, and are based on deep and complex systems that often cannot operate in real-time, making them impractical for video-surveillance. In this paper we present a long-term, multi-face tracking architecture conceived for working in crowded contexts where faces are often the only visible part of a person. Our system benefits from advances in the fields of face detection and face recognition to achieve long-term tracking, and is particularly unconstrained to the motion and occlusions of people. It follows a tracking-by-detection approach, combining a fast short-term visual tracker with a novel online tracklet reconnection strategy grounded on rank-based face verification. The proposed rank-based constraint favours higher inter-class distance among tracklets, and reduces the propagation of errors due to wrong reconnections. Additionally, a correction module is included to correct past assignments with no extra computational cost. We present a series of experiments introducing novel specialized metrics for the evaluation of long-term tracking capabilities, and publicly release a video dataset with 10 manually annotated videos and a total length of 8' 54". Our findings validate the robustness of each of the proposed modules, and demonstrate that, in these challenging contexts, our approach yields up to 50% longer tracks than state-of-the-art deep learning trackers.
description: arXiv admin note: substantial text overlap with arXiv:2010.08675
Numerical Models of Travel-Time Inhomogeneities in Sunspots
Creators: name: Moradi, H.
name: Hanasoge, S. M.
name: Cally, P. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the direct contribution of strong, sunspot-like magnetic fields to helioseismic wave travel-time shifts via two numerical forward models, a 3D ideal MHD solver and MHD ray theory. The simulated data cubes are analyzed using the traditional time-distance center-to-annulus measurement technique. We also isolate and analyze the direct contribution from purely thermal perturbations to the observed travel-time shifts, confirming some existing ideas and bring forth new ones: (i) that the observed travel-time shifts in the vicinity of sunspots are largely governed by MHD physics, (ii) the travel-time shifts are sensitively dependent on frequency and phase-speed filter parameters and the background power below the $p_1$ ridge, and finally, (iii) despite its seeming limitations, ray theory succeeds in capturing the essence of the travel-time variations as derived from the MHD simulations.
description: 13 Pages, 3 Figures. ApJ Letters Accepted
Defining sustainability? Insights from a small village in Bosnia and Herzegovina
Creators: name: Dogmus, Özge Can
name: Nielsen, Jonas
Publisher: name: Humboldt-Universität zu Berlin
Year: 2020
Subjects: subject: Sustainability
subject: Imaginaries
subject: Integrative
subject: Hydropower
subject: Ecotourism
subject: Sustainable development
subject: Bosnia and Herzegovina
subject: 550 Geowissenschaften

description: The term “sustainability” is flexible as it needs to function in many different contexts and across many issues. At the same time, this flexibility makes it difficult to assess and easy to misuse. Over the last three decades, numerous sustainability assessment tools have been developed to better define the term. In this paper, we critically address these attempts and argue that the flexibility of the term is not solely problematic, but allow people to create their own sustainability imaginaries, by which we mean a society’s understanding of how environmental resources should be used. We show this through a case study, the Martin Brod village in Bosnia and Herzegovina, where, within a few years, the inhabitants changed their sustainability imaginaries in parallel with shifting external socio-economic conditions and expectations. We primarily applied qualitative research methods. Our results show that changing sustainability imaginaries was made possible due to the flexibility of the term which enabled otherwise disempowered local inhabitants to have agency. Consequently, a stricter definition of sustainability may have unintended consequences for people struggling to maintain a political voice in settings such as Bosnia and Herzegovina.
Experimental Evidence for Two-Dimensional Magnetic Order in Proton Bombarded Graphite
Creators: name: Barzola-Quiquia, J.
name: Esquinazi, P.
name: Rothermel, M.
name: Spemann, D.
name: Butz, T.
name: García, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have prepared magnetic graphite samples bombarded by protons at low temperatures and low fluences to attenuate the large thermal annealing produced during irradiation. An overall optimization of sample handling allowed us to find Curie temperatures $ T_c \gtrsim 350$ K at the used fluences. The magnetization versus temperature shows unequivocally a linear dependence, which can be interpreted as due to excitations of spin waves in a two dimensional Heisenberg model with a weak uniaxial anisotropy.
description: 4 pages, 3 figures
Influence of cosmological expansion in local experiments
Creators: name: Spengler, Felix
name: Belenchia, Alessio
name: Rätzel, Dennis
name: Braun, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Whether the cosmological expansion can influence the local dynamics, below the galaxy clusters scale, has been the subject of intense investigations in the past three decades. In this work, we consider McVittie and Kottler spacetimes, embedding a spherical object in a FLRW spacetime. We calculate the influence of the cosmological expansion on the frequency shift of a resonator and estimate its effect on the exchange of light signals between local observers. In passing, we also clarify some of the statements made in the literature.
description: 20+11 pages, 1 figure, version close to the one published
Evaluation of state-of-the-art deep learning models in the segmentation of the heart ventricles in parasternal short-axis echocardiograms
Creators: name: Buritica, Julian Rene Cuellar
name: Dinh, Vu
name: Burri, Manjula
name: Roelandts, Julie
name: Wendling, James
name: Klingensmith, Jon D.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: I.4.6; I.2.m

description: Previous studies on echocardiogram segmentation are focused on the left ventricle in parasternal long-axis views. In this study, deep-learning models were evaluated on the segmentation of the ventricles in parasternal short-axis echocardiograms (PSAX-echo). Segmentation of the ventricles in complementary echocardiogram views will allow the computation of important metrics with the potential to aid in diagnosing cardio-pulmonary diseases and other cardiomyopathies. Evaluating state-of-the-art models with small datasets can reveal if they improve performance on limited data. PSAX-echo were performed on 33 volunteer women. An experienced cardiologist identified end-diastole and end-systole frames from 387 scans, and expert observers manually traced the contours of the cardiac structures. Traced frames were pre-processed and used to create labels to train 2 specific-domain (Unet-Resnet101 and Unet-ResNet50), and 4 general-domain (3 Segment Anything (SAM) variants, and the Detectron2) deep-learning models. The performance of the models was evaluated using the Dice similarity coefficient (DSC), Hausdorff distance (HD), and difference in cross-sectional area (DCSA). The Unet-Resnet101 model provided superior performance in the segmentation of the ventricles with 0.83, 4.93 pixels, and 106 pixel2 on average for DSC, HD, and DCSA respectively. A fine-tuned MedSAM model provided a performance of 0.82, 6.66 pixels, and 1252 pixel2, while the Detectron2 model provided 0.78, 2.12 pixels, and 116 pixel2 for the same metrics respectively. Deep-learning models are suitable for the segmentation of the left and right ventricles in PSAX-echo. This study demonstrated that specific-domain trained models such as Unet-ResNet provide higher accuracy for echo segmentation than general-domain segmentation models when working with small and locally acquired datasets.
description: 25 pages, 13 figures, 6 tables