cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rhinoclemmys punctularia
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Geoemydidae
Rhinoclemmys
Rhinoclemmys punctularia

description: Rhinoclemmys punctularia (Daudin 1802:249)
Holotype: MNHN 9130 (Fretey 1977:83, including illustration on p. 84, 87); illustrated in Oppel 1811: Pl. 29–30; reproduced in Bour & Schmidtler 2014:35); photographed in Bour (2007b:29) and Bour & Schmidtler (2014:35).
Testudo scabra Linnaeus 1758:198
Holotype: UPSZTY (formerly ZMUU) 129 (photographed in Rhodin & Carr 2009:9).
Testudo dorsata Schoepff 1801: 136
Holotype: Not located; possibly ZMUS; apparently illustrated on unpublished plate cited in the original description (Pl. XXXIV).
Testudo alacacca Stedman in Schweigger 1812: 429
Holotype: Not located.
Emys dorsualis Spix 1824:11
Syntypes (2; Hoogmoed & Gruber 1983:350): Only ZSM 2424/0 is locatable (Hoogmoed & Gruber 1983:350; Franzen & Glaw 2007:206), was likely the specimen illustrated in the original description (Pl. IX), and was designated lectotype by Hoogmoed & Gruber (1983:350).
Rhinoclemys bellii Gray 1863:183
Holotype: OUM 8510 (Nowak-Kemp & Fritz 2010:14), illustrated as Emys scabra in Bell (1834, Part 3:Pl. 3–4).
Geoclemys callocephalus Gray 1863:254
Holotype: BMNH 1947.3.5.50 (formerly 1853.11.30.3).
Rhinoclemmys lunata Gray 1873:144
Syntypes (2): BMNH 1946.1.22.69-70 (formerly 1866.8.14.227).
Rhinoclemys ventricosa Gray 1873:145
Holotype: BMNH 1947.3.5.49 (formerly 1867.4.2.156).
Rhinoclemmys punctularia flammigera Paolillo 1985:294
Holotype: EBRG 1467 (photographed in the original description, p. 205, Fig. 1; photographed in Vetter 2005:51); paratypes (13), EBRG 1468- 72, 1684; MBUCV 2062-68.
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 31, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Simulation of Matrix Product States to Unveil the Initial State Dependency of non-Gaussian Dynamics of Kerr Nonlinearity
Creators: name: Agasti, Souvik
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We simulate a free dissipative and coherent-driven Kerr nonlinear system using a time-evolving block decimation (TEBD) algorithm, to study the impact of the initial state on the exact quantum dynamics of the system. The superposition of two coherent branches results in non-classical time dynamics. The Wigner state representation confirms that the system ends up saturating to two different branches, through evolving different trajectories, resulting in de-Gaussification throughout evolution. Furthermore, we also see that the time evolution suffers a residual effect of the initial state.
description: 11 pages, 7 figures. arXiv admin note: text overlap with arXiv:2308.10667
Going beyond Top EFT
Creators: name: Lessa, André
name: Sanz, Verónica
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a new way to interpret Top Standard Model measurements going beyond the SMEFT framework. Instead of the usual paradigm in Top EFT, where the main effects come from tails in momenta distributions, we propose an interpretation in terms of new physics which only shows up at loop-level. The effects of these new states, which can be lighter than required within the SMEFT, appear as distinctive structures at high momenta, but may be suppressed at the tails of distributions. As an illustration of this phenomena, we present the explicit case of a UV model with a $\mathcal{Z}_2$ symmetry, including a Dark Matter candidate and a top-partner. This simple UV model reproduces the main features of this class of signatures, particularly a momentum-dependent form factor with more structure than the SMEFT. As the new states can be lighter than in SMEFT, we explore the interplay between the reinterpretation of direct searches for colored states and Dark Matter, and Top measurements made by ATLAS and CMS in the differential $t \bar t$ final state. We also compare our method with what one would expect using the SMEFT reinterpretation, finding that using the full loop information provides a better discriminating power.
description: 27 pages, 12 figures. The datasets used to obtain all the results presented here as well as additional details are available in https://zenodo.org/records/10277973
Rhinoclemmys rubida
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Geoemydidae
Rhinoclemmys
Rhinoclemmys rubida

description: Rhinoclemmys rubida (Cope 1869:148)
Syntypes (9 or 10): ANSP 285 and 337–341 (Malnate 1971:354); and USNM 45612-14 (Cochran 1961:228; Reynolds et al. 2007:21), although Cope only noted 4 specimens, numbered 264– 267, in the original description, and 265–267 correspond to the USNM specimens. The fourth is either lost or part of the ANSP series (Reynolds et al. 2007:21). Additional syntypes may exist in the MNHN (Roger Bour, pers.comm.).
Rhinoclemmys mexicana Gray 1870:659
Syntypes (3): BMNH 1947.3.4.34 (formerly 1870.6.20.1) and 1947.3.5.60-61 (1871.2.7.45- 46).
Rhinoclemmys rubida perixantha Mosimann & Rabb 1953:1
Holotype: UMMZ 80336; photographed in the original description, Pl. I, and reproduced in Smith & Smith 1980:947); paratypes (5), UMMZ 80335, 80337, 104333, 104334 (formerly MCZ 53278 according to Kluge 1984:80), and 104335 (Kluge 1984:80).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 31, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Sacalia bealei
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Geoemydidae
Sacalia
Sacalia bealei

description: Sacalia bealei (Gray 1831:71)
Syntypes (2): BMNH 1947.3.4.33 and 1947.3.4.42.
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 32, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
A voxel-level approach to brain age prediction: A method to assess regional brain aging
Creators: name: Gianchandani, Neha
name: Dibaji, Mahsa
name: Ospel, Johanna
name: Vega, Fernando
name: Bento, Mariana
name: MacDonald, M. Ethan
name: Souza, Roberto
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Brain aging is a regional phenomenon, a facet that remains relatively under-explored within the realm of brain age prediction research using machine learning methods. Voxel-level predictions can provide localized brain age estimates that can provide granular insights into the regional aging processes. This is essential to understand the differences in aging trajectories in healthy versus diseased subjects. In this work, a deep learning-based multitask model is proposed for voxel-level brain age prediction from T1-weighted magnetic resonance images. The proposed model outperforms the models existing in the literature and yields valuable clinical insights when applied to both healthy and diseased populations. Regional analysis is performed on the voxel-level brain age predictions to understand aging trajectories of known anatomical regions in the brain and show that there exist disparities in regional aging trajectories of healthy subjects compared to ones with underlying neurological disorders such as Dementia and more specifically, Alzheimer's disease. Our code is available at https://github.com/nehagianchandani/Voxel-level-brain-age-prediction.
description: Accepted for publication at the Journal of Machine Learning for Biomedical Imaging (MELBA) https://melba-journal.org/2024:007
Sacalia quadriocellata Siebenrock 1903
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Geoemydidae
Sacalia
Sacalia quadriocellata

description: Sacalia quadriocellata Siebenrock 1903:336
Holotype: NMW 23393 (Tiedemann & Häupl 1980:7; Tiedemann et al. 1994:11).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 32, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Siebenrockiella crassicollis
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Geoemydidae
Siebenrockiella
Siebenrockiella crassicollis

description: Siebenrockiella crassicollis (Gray 1830:8)
Syntypes (at least 5): OUM 8479, 8480 (illustrated in Gray 1831b:Pl. 76), and 8481 (Nowak-Kemp & Fritz 2010:11); and BMNH 1947.3.5.36 (erroneously listed as the holotype by King & Burke 1989:50 and Iverson 1992:166, because it was listed as such in the BMNH catalogue).
Emys nigra Blyth 1856:713
Syntypes (number uncertain): Not located; possibly ZSI, but apparently lost; not listed in Das et al. (1998) or Kundu et al. (2018).
Pangshura cochinchinensis Tirant 1884: 159
Syntypes: Not located.
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 32, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Siebenrockiella leytensis
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Geoemydidae
Siebenrockiella
Siebenrockiella leytensis

description: Siebenrockiella leytensis (Taylor 1920:131)
Holotype: “An unnumbered specimen in the zoölogical laboratory, University of the Philippines ”; transferred to the Bureau of Science according to Taylor (1944:160) and destroyed (along with the paratype) during World War II; CAS 60930 designated neotype by Buskirk (1989:226, photographed therein, p. 225, Figs. 1–3).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 32, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Induced Circular Polarization on Photons Due to Interaction with Axion-Like Particles in Rotating Magnetic Field of Neutron Stars
Creators: name: Sharifian, Mohammad
name: Zarei, Moslem
name: Matarrese, Sabino
name: Turolla, Roberto
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate how the photon polarization is affected by the interaction with axion-like particles (ALPs) in the rotating magnetic field of a neutron star (NS). Using quantum Boltzmann equations the study demonstrates that the periodic magnetic field of millisecond NSs enhances the interaction of photons with ALPs and creates a circular polarization on them. A binary system including an NS and a companion star could serve as a probe. When the NS is in front of the companion star with respect to the earth observer, there is a circular polarization on the previously linearly polarized photons as a result of the interaction with ALPs there. After a half-binary period, the companion star passes in front of the NS, and the circular polarization of photons disappears and changes to linear. The excluded parameter space for a millisecond NS with 300~Hz rotating frequency, highlights the coupling constant of $1.7\times10^{-11}~\text{GeV}^{-1}\leq g_{aγγ}\leq1.6\times10^{-3}~\text{GeV}^{-1}$ for the ALP masses in the range of $7\times10^{-12}~\text{eV}\leq m_a\leq1.5\times 10^{3}~\text{eV}$.
description: 33 pages, 5 figures
Vijayachelys silvatica
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Geoemydidae
Vijayachelys
Vijayachelys silvatica

description: Vijayachelys silvatica (Henderson 1912:217)
Holotype: Not stated; ZSI 17117 (Das et al. 1998:127; Das 2009:5; Kundu et al. 2018:50).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 32, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Actinemys marmorata
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Emydidae
Actinemys
Actinemys marmorata

description: Actinemys marmorata (Baird & Girard 1852:177)
Syntypes (5; Cochran 1961:230; Reynolds et al. 2007:14): USNM 88, 7594-96 and 131830 (formerly 7593).
Emys nigra Hallowell 1856:91
Holotype: USNM 26 (now lost; Yarrow 1883:36; Reynolds et al. 2007:14).
Clemmys wosnessenskyi Strauch 1862:114
Holotype: ZIN 94 (Strauch 1890:72–73).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 32, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
NOON-state interference in the frequency domain
Creators: name: Lee, Dongjin
name: Shin, Woncheol
name: Park, Sebae
name: Kim, Junyeop
name: Shin, Heedeuk
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The examination of entanglement across various degrees of freedom has been pivotal in augmenting our understanding of fundamental physics, extending to high dimensional quantum states, and promising the scalability of quantum technologies. In this paper, we demonstrate the photon number path entanglement in the frequency domain by implementing a frequency beam splitter that converts the single-photon frequency to another with 50% probability using Bragg scattering four-wave mixing. The two-photon NOON state in a single-mode fiber is generated in the frequency domain, manifesting the two-photon interference with two-fold enhanced resolution compared to that of single-photon interference, showing the outstanding stability of the interferometer. This successful translation of quantum states in the frequency domain will pave the way toward the discovery of fascinating quantum phenomena and scalable quantum information processing.
description: Main text (9 pages and 6 figures), Supplementary information (14 pages and 7 figures)
T-wave Inversion through Inhomogeneous Voltage Diffusion within the FK3V Cardiac Model
Creators: name: Angelaki, E.
name: Lazarides, N.
name: Barmparis, G. D.
name: Kourakis, I.
name: Marketou, M. E.
name: Tsironis, G. P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The heart beats due to the synchronized contraction of cardiomyocytes triggered by a periodic sequence of electrical signals called action potentials, which originate in the sinoatrial node and spread through the heart's electrical system. A large body of work is devoted to modeling the propagation of the action potential and to reproducing reliably its shape and duration. Connection of computational modeling of cells to macroscopic phenomenological curves such as the electrocardiogram has been also intense, due to its clinical importancce in analyzing cardiovascular diseases. In this work we simulate the dynamics of action potential propagation using the three-variable Fenton-Karma model that can account for both normal and damaged cells through spatially inhomogeneous voltage diffusion coefficient. We monitor the action potential propagation in the cardiac tissue and calculate the pseudo-electrocardiogram that reproduces the R and T waves. The R wave amplitude varies according to a double exponential law as a function of the (spatially homogeneous, for an isotropic tissue) diffusion coefficient. The addition of spatial inhomogeneity in the diffusion coefficient by means of a defected region representing damaged cardiac cells, may result in T-wave inversion in the calculated pseudo-electrocardiogram. The transition from positive to negative polarity of the T-wave is analyzed as a function of the length and the depth of the defected region.
description: 12 pages, figures, 39 references
Sensitivity of 3D Convective Urca Simulations to Changes in Urca Reactions
Creators: name: Boyd, Brendan
name: Clark, Alexander Smith
name: Calder, Alan C.
name: Townsley, Dean M.
name: Zingale, Michael
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A proposed setting for thermonuclear (Type Ia) supernovae is a white dwarf that has gained mass from a companion to the point of carbon ignition in the core. There is a simmering phase in the early stages of burning that involves the formation and growth of a core convection zone. One aspect of this phase is the convective Urca process, a linking of weak nuclear reactions to convection that may alter the composition and structure of the white dwarf. Convective Urca is not well understood and requires 3D fluid simulations to realistically model. Additionally, the convection is relatively slow (Mach number less than 0.005) so a low-Mach method is needed to make simulating computationally feasible. Using the MAESTROeX low-Mach hydrodynamics code, we investigate recent changes to how the weak reactions are modeled in the convective Urca simulations. We present results that quantify the changes to the reaction rates and their impact on the evolution of the simulation.
description: 9 pages, 7 figures, submitted to the Proceedings of 15th International Conference on Numerical Modeling of Space Plasma Flows (AstroNum)
TiO2 multi-leg nanotubes for Surface-enhanced Raman scattering
Creators: name: S, Harini
name: Gupta, Garima
name: Roy, Somnath C.
name: Yalavarthi, Rambabu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In the recent past, significant research efforts have been put forth to fabricate low-cost noble metal-free substrates for surface-enhanced Raman spectroscopy (SERS) applications. Here we propose semiconducting TiO2 multi-leg nanotubes (TiO2 MLNTs, with and without the gold nanoparticle coating) as SERS substrates. TiO2 MLNTs show unique multi-leg morphology compared to the conventional non-multi-leg tubes and possess better light-harvesting properties. TiO2 MLNTs are fabricated with a simple and versatile single-step electrochemical anodization method. Remarkable high SERS sensitivity is observed towards the detection of Methylene blue (MB), up to nM concentration (E.F. ~104). The same is attributed to the resonantly matched photonic absorption edge of TiO2 MLNTs with the wavelength of incident laser probe light. On the other hand, gold nanoparticle-coated TiO2 MLNTs demonstrated further enhancement in SERS sensitivity (E.F. ~105, for nM of MB) facilitated by the synergy that exists between the plasmonic modes (LSPRs) of Au and the photonic absorption mode of TiO2 MLNTs.
Actinemys pallida
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Emydidae
Actinemys
Actinemys pallida

description: Actinemys pallida (Seeliger 1945:158)
Holotype: MVZ 6716 (Crippen 1962:190; Rodríguez-Robles et al. 2003:65).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 32, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Not All Subhaloes Are Created Equal: Modelling the Diversity of Subhalo Density Profiles in TNG50
Creators: name: Heinze, Felix M.
name: Despali, Giulia
name: Klessen, Ralf S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this work, we analyse the density profiles of subhaloes with masses $M_\mathrm{sh} \geq 1.4 \times 10^8$ M$_\odot$ in the TNG50 simulation, with the aim of including baryonic effects. We evaluate the performance of frequently used models, such as the standard NFW, the Einasto, and a smoothly truncated version of the NFW profile. We find that these models do not perform well for the majority of subhaloes, with the NFW profile giving the worst fit in most cases. This is primarily due to mismatches in the inner and outer logarithmic slopes, which are significantly steeper for a large number of subhaloes in the presence of baryons. To address this issue, we propose new three-parameter models and show that they significantly improve the goodness of fit independently of the subhalo's specific properties. Our best-performing model is a modified version of the NFW profile with an inner log-slope of -2 and a variable truncation that is sharper and steeper than the slope transition in the standard NFW profile. Additionally, we investigate how both the parameter values of the best density profile model and the average density profiles vary with subhalo mass, $V_\mathrm{max}$, distance from the host halo centre, baryon content and infall time, and we also present explicit scaling relations for the mean parameters of the individual profiles. The newly proposed fit and the scaling relations are useful to predict the properties of realistic subhaloes in the mass range $10^8$ M$_\odot$ $\leq M_\mathrm{sh} \leq$ $10^{13}$ M$_\odot$ that can be influenced by the presence of baryons.
description: 15+5 pages, 17+13 figures, submitted to MNRAS, comments welcome
Postcolonial Open Access
Creators: name: Piron, Florence
Publisher: name: Open Scholarship Press
Year: 2017
Subjects: subject: Digital humanities
subject: Open access
subject: Postcolonialism

description: Is open access the solution to many of the problems faced in the Global South by postcolonial universities, lacking the resources and capacity to subscribe to expensive scientific journals? In this chapter, drawing on an action-research project in Haiti and in Francophone Africa, I argue that this is not the case. On the contrary, open access can become a tool of neocolonialism if it only gives students and academics better access to science from the North. I conclude with recommendations to make open access an instrument of emancipation and cognitive justice in Africa and Haiti.
Shortcuts to adiabaticity: theoretical framework, relations between different methods, and versatile approximations
Creators: name: Hatomura, Takuya
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Shortcuts to adiabaticity guide given systems to final destinations of adiabatic control via fast tracks. Various methods were proposed as varieties of shortcuts to adiabaticity. Basic theory of shortcuts to adiabaticity was established in the 2010s, but it has still been developing and many fundamental findings have been reported. In this Topical Review, we give a pedagogical introduction to theory of shortcuts to adiabaticity and revisit relations between different methods. Some versatile approximations in counterdiabatic driving, which is one of the methods of shortcuts to adiabaticity, will be explained in detail. We also summarize recent progress in studies of shortcuts to adiabaticity.
description: A topical review focusing on some specific topics of shortcuts to adiabaticity. Comments and suggestions are welcome:)
Chrysemys dorsalis Agassiz 1857
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Emydidae
Chrysemys
Chrysemys dorsalis

description: Chrysemys dorsalis Agassiz 1857:440
Syntypes (at least 3): USNM 21 (Cochran 1961:229; Reynolds et al. 2007:11); and MCZ 1801 and 31960 (Barbour & Loveridge 1929:241 reported only two syntypes in the MCZ numbered 1801–1802); type locality correction by Ernst (1967:133) by default makes MCZ 1801 the lectotype (Smith & Smith 1980:423).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 32, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Densifying MIMO: Channel Modeling, Physical Constraints, and Performance Evaluation for Holographic Communications
Creators: name: Liu, Y.
name: Zhang, M.
name: Wang, T.
name: Zhang, A.
name: Debbah, M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: As the backbone of the fifth-generation (5G) cellular network, massive multiple-input multiple-output (MIMO) encounters a significant challenge in practical applications: how to deploy a large number of antenna elements within limited spaces. Recently, holographic communication has emerged as a potential solution to this issue. It employs dense antenna arrays and provides a tractable model. Nevertheless, some challenges must be addressed to actualize this innovative concept. One is the mutual coupling among antenna elements within an array. When the element spacing is small, near-field coupling becomes the dominant factor that strongly restricts the array performance. Another is the polarization of electromagnetic waves. As an intrinsic property, it was not fully considered in the previous channel modeling of holographic communication. The third is the lack of real-world experiments to show the potential and possible defects of a holographic communication system. In this paper, we propose an electromagnetic channel model based on the characteristics of electromagnetic waves. This model encompasses the impact of mutual coupling in the transceiver sides and the depolarization in the propagation environment. Furthermore, by approximating an infinite array, the performance restrictions of large-scale dense antenna arrays are also studied theoretically to exploit the potential of the proposed channel. In addition, numerical simulations and a channel measurement experiment are conducted. The findings reveal that within limited spaces, the coupling effect, particularly for element spacing smaller than half of the wavelength, is the primary factor leading to the inflection point for the performance of holographic communications.
description: 14 pages, 20 figures, accepted by JSAC-SI-ESIT
Chrysemys picta
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Emydidae
Chrysemys
Chrysemys picta

description: Chrysemys picta (Schneider 1783:348)
Syntypes (number uncertain): possibly includes UPSZTY (formerly UUZM) 279 (= MGA 48; Thunberg 1828:49; Holm 1957:58; and Wallin 2001:127), although MCZ 1764 is listed as a syntype in their on-line catalog.
Testudo cinerea Bonnaterre 1789:25
Holotype: Not located (Ernst 1971:1), but illustrated in Brown (1776:Pl. 48, Fig. 1–2).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 32, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Chrysemys picta subsp. bellii
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Emydidae
Chrysemys
Chrysemys picta
Chrysemys picta bellii (gray 1830:12)

description: Chrysemys picta bellii (Gray 1830:12)
Holotype: Originally in RCSM (unnumbered), but destroyed in 1941 by bombing during World War II (Ernst 1971:2).
Emys oregoniensis Harlan 1837:382
Holotype: ANSP 165 (Malnate 1971:354), although reported as not designated by Ernst (1971:2).
Chrysemys nuttalii Agassiz 1857: 642
Syntypes: Not designated according to Ernst (1971:2), but MCZ 1771-74 and 1776-77 labeled as syntypes.
Chrysemys pulchra Gray 1873:147
Syntypes (7): BMNH 1946.1.22.26 (formerly 1861.8.21.5-6), 1946.1.22.27 (formerly 1855.12.6.9), 1946.1.22.93 (formerly 1855.4.12.3), 1947.3.4.75 (formerly 1862.6.5.1), 1947.3.4.76 (formerly 1858.9.9.6), 1947.3.4.77 (formerly 1844.11.16.5), and 1947.3.4.23 (formerly 1852.9.8.7).
Chrysemys treleasei Hurter 1911: 235
Syntypes (3): USNM 49427-29 (Cochran 1961:229; Reynolds et al. 2007:12).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 32, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Chrysemys picta subsp. marginata Agassiz 1857
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Emydidae
Chrysemys
Chrysemys picta
Chrysemys picta marginata agassiz 1857:439

description: Chrysemys picta marginata Agassiz 1857:439
Syntypes (18, according to Barbour & Loveridge (1929:241): MCZ 1780 (3 specimens), 1789– 1790 (3), 1791 (3), and 1796 (9); UIMNH 41529 (formerly MCZ 1796; Smith et al. 1964:35); NMW 26218 (Tiedemann et al. 1994:11); and UMMZ 63519 (Peters 1952:54; Kluge 1984:79). However, current MCZ on-line catalogue lists 1784, 1792, 182588, 182590, 182594-96, 182599, 182601-02, and 182604-06 as syntypes, most of which are presumably renumbered early catalog numbers with multiple specimens. Type locality restriction by Schmidt (1953:99) by default makes one of the three MCZ 1780 specimens the lectotype (Smith & Smith 1980:423).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 32, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Quantum Sensing of Magnetic Fields with Molecular Spins
Creators: name: Bonizzoni, Claudio
name: Ghirri, Alberto
name: Santanni, Fabio
name: Affronte, Marco
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spins are prototypical systems with the potential to probe magnetic fields down to the atomic scale limit. Exploiting their quantum nature through appropriate sensing protocols allows to enlarge their applicability to fields not always accessible by classical sensors. Here we first show that quantum sensing protocols for AC magnetic fields can be implemented on molecular spin ensembles embedded into hybrid quantum circuits. We then show that, using only echo detection at microwave frequency and no optical readout, Dynamical Decoupling protocols synchronized with the AC magnetic fields can enhance the sensitivity up to $S = 10^{-10}-10^{-9}T/\sqrt{Hz}$ with a low (4-5) number of applied pulses. These results paves the way for the development of strategies to exploit molecular spins as quantum sensors.
description: 11 pages, 5 figures
Emergent Gauge Symmetry in Active Brownian Matter
Creators: name: Silvano, Nathan O.
name: Barci, Daniel G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate a two-dimensional system of interacting Active Brownian Particles. Using the Martin-Siggia-Rose-Janssen-de Dominicis formalism, we built up the generating functional for correlation functions. We study in detail the hydrodynamic regime with a constant density stationary state. Our findings reveal that, within a small density fluctuations regime, an emergent $U(1)$ gauge symmetry arises, originated from the conservation of fluid vorticity. Consequently, the interaction between the orientational order parameter and density fluctuations can be cast into a gauge theory, where the concept of ``electric charge density" aligns with the local vorticity of the original fluid. We study in detail the case of a microscopic local two-body interaction. We show that, upon integrating out the gauge fields, the stationary states of the rotational degrees of freedom satisfy a non-local Frank free energy for a nematic fluid. We give explicit expressions for the splay and bend elastic constants as a function of the Péclet number (${\rm Pe}$) and the diffusion interaction constant ($k_d$).
description: 15 pages, final version accepted to publish in Phys. Rev. E
Clemmys guttata
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Emydidae
Clemmys
Clemmys guttata

description: Clemmys guttata (Schneider 1792:264)
Holotype: Not located; apparently once in the Bloch collection in Dresden.
Testudo punctata Schoepff 1792:25
Holotype: Not located (Ernst 1972:1); type illustrated in the original description (Pl. V).
Geoclemmys sebae Gray 1869:188
Holotype: possibly in the BMNH; the BMNH catalogue indicates that 1853.11.30.25 is “possibly the type of Geoclemmys sebae ”.
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 33, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Deirochelys reticularia
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Emydidae
Deirochelys
Deirochelys reticularia

description: Deirochelys reticularia (Latreille 1801:124)
Holotype: Formerly in MNHN, now lost; illustrated in the original description, Fig. 1, opp. p. 124; CHM 54.48.1 (photographed by Schwartz 1956a:471; not 54.68.1 as listed by Zug & Schwartz 1971:1; now NCSM 88836) designated neotype by Schwartz (1956a:466). NCSM 52.140.5 designated neoallotype by Schwartz (1956a:466), who included photographs of it (1956a:472).
Testudo reticulata Bosc in Daudin 1801: 144
Holotype: Not located; NCSM 88836 designated neotype by Schwartz (1956a:466).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 33, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
A Fast and Scalable Computational Topology Framework for the Euler Characteristic
Creators: name: Laky, Daniel J.
name: Zavala, Victor M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Geometry (cs.CG)
subject: FOS: Computer and information sciences

description: The Euler characteristic (EC) is a powerful topological descriptor that can be used to quantify the shape of data objects that are represented as fields/manifolds. Fast methods for computing the EC are required to enable processing of high-throughput data and real-time implementations. This represents a challenge when processing high-resolution 2D field data (e.g., images) and 3D field data (e.g., video, hyperspectral images, and space-time data obtained from fluid dynamics and molecular simulations). In this work, we present parallel algorithms (and software implementations) to enable fast computations of the EC for 2D and 3D fields using vertex contributions. We test the proposed algorithms using synthetic data objects and data objects arising in real applications such as microscopy, 3D molecular dynamics simulations, and hyperspectral images. Results show that the proposed implementation can compute the EC a couple of orders of magnitude faster than ${\tt GUDHI}$ (an off-the-shelf and state-of-the art tool) and at speeds comparable to ${\tt CHUNKYEuler}$ (a tool tailored to scalable computation of the EC). The vertex contributions approach is flexible in that it compute the EC as well as other topological descriptors such as perimeter, area, and volume (${\tt CHUNKYEuler}$ can only compute the EC). Scalability with respect to memory use is also addressed by providing low-memory versions of the algorithms; this enables processing of data objects beyond the size of dynamic memory. All data and software needed for reproducing the results are shared as open-source code.
Towards establishing a connection between two-level quantum systems and physical spaces
Creators: name: Valle, V. G.
name: Brugger, L. L.
name: Rizzuti, B. F.
name: Duarte, Cristhiano
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This work seeks to make explicit the operational connection between the preparation of two-level quantum systems with their corresponding description (as states) in a Hilbert space. This may sound outdated, but we show there is more to this connection than common sense may lead us to believe. To bridge these two separated realms -- the actual laboratory and the space of states -- we rely on a paradigmatic mathematical object: the Hopf fibration. We illustrate how this connection works in practice with a simple optical setup. Remarkably, this optical setup also reflects the necessity of using two charts to cover a sphere. Put another way, our experimental realization reflects the bi-dimensionality of a sphere seen as a smooth manifold.
description: 10 pages, 2 figures, minor adjustments and a section added according to reviewer's suggestions
Deirochelys reticularia subsp. chrysea Schwartz 1956
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Emydidae
Deirochelys
Deirochelys reticularia
Deirochelys reticularia chrysea schwartz 1956:476

description: Deirochelys reticularia chrysea Schwartz 1956:476
Holotype: UMMZ 111440 (illustrated in the original description, p. 478, Fig. 105); paratypes (16), AMNH 9054, 49954, 65620-21; CAS 9158; CHM 54.202 and 55.39.2; MCZ 12497; UF 7219- 20 (Gilbert 1974:117); UMMZ 96513, 100370- 71, 106309, and 106319-20 (Kluge 1984:80). UMMZ 100371 photographed in Schwartz (1956a:481, Fig. 106).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 33, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Deirochelys reticularia subsp. miaria Schwartz 1956
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Emydidae
Deirochelys
Deirochelys reticularia
Deirochelys reticularia miaria schwartz 1956:486

description: Deirochelys reticularia miaria Schwartz 1956:486
Holotype: FMNH 37478 (Marx 1958:449; photographed in the original description, p. 489, Fig. 107); paratypes (34, according to Reynolds et al. 2007:14): AMNH 36726; BCBC 225, 3044- 46, 4690, 4694; CHM 55.39.3; CM 5443-45 (McCoy & Richmond 1966:249); FMNH 37482, 46282-83, 52995-96 (Marx 1958:449); KU 3145, SMBU 085, 157, 160, 6684; TCWC 326, 691, 4679, 4680, 7278; TNHC 6035, 7325, 8905-07; UIMNH 2397, 28503, and 31696 (Smith et al. 1964:35); and USNM 85145 (Cochran 1961:230; Reynolds et al. 2007:14; photographed in the original description, p. 491, Fig. 108).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 33, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
MPEC 2024-M116 : 2024 MH1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 MH1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Quantum criticality in chains of planar rotors with dipolar interactions
Creators: name: Serwatka, Tobias
name: Roy, Pierre-Nicholas
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this contribution we perform a density matrix renormalization group study of chains of planar rotors interacting via dipolar interactions. By exploring the ground state from weakly to strongly interacting rotors, we find the occurrence of a quantum phase transition between a disordered and a dipole-ordered quantum state. We show that the nature of the ordered state changes from ferroelectric to antiferroelectric when the relative orientation of the rotor planes varies and that this change requires no modification of the overall symmetry. The observed quantum phase transitions are characterized by critical exponents and central charges which reveal different universality classes ranging from that of the (1+1)D Ising model to the 2D classical XY model.
description: 8 pages, 6 figures
Emydoidea blandingii
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Emydidae
Emydoidea
Emydoidea blandingii

description: Emydoidea blandingii (Holbrook 1838:35)
Holotype: ANSP 26123 (Malnate 1971:353).
Testudo flava Lacepéde 1788:135
Holotype: Not located; possibly originally in the MNHN; illustrated in the original description (Pl. opp. p. 135).
Testudo flava Bonnaterre 1789:26
Holotype: Not located; possibly originally in the MNHN; illustrated in Lacepéde (1788: Pl. opp. p. 135).
Testudo meleagris Shaw 1793:147
Holotype: Not located; illustrated in the original description (Fig. 144).
Emys twentei t Taylor 1943:250
Holotype: KU Paleo 6478 (Taylor 1944:160; Vlachos 2018:54); illustrated in the original description (Pl. 20).
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on page 33, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441
Cut-and-paste for impulsive gravitational waves with $Λ$: The mathematical analysis
Creators: name: Sämann, Clemens
name: Schinnerl, Benedict
name: Steinbauer, Roland
name: Švarc, Robert
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 83C15, 83C35, 46F30, 46F10, 83C10, 34A36

description: Impulsive gravitational waves are theoretical models of short but violent bursts of gravitational radiation. They are commonly described by two distinct spacetime metrics, one of local Lipschitz regularity, the other one even distributional. These two metrics are thought to be `physically equivalent' since they can be formally related by a `discontinuous coordinate transformation'. In this paper we provide a mathematical analysis of this issue for the entire class of nonexpanding impulsive gravitational waves propagating in a background spacetime of constant curvature. We devise a natural geometric regularisation procedure to show that the notorious change of variables arises as the distributional limit of a family of smooth coordinate transformations. In other words, we establish that both spacetimes arise as distributional limits of a smooth sandwich wave taken in different coordinate systems which are diffeomorphically related.
description: 26 pages
Colossal orbital Zeeman effect driven by tunable spin-Berry curvature in a kagome metal
Creators: name: Li, Hong
name: Cheng, Siyu
name: Pokharel, Ganesh
name: Eck, Philipp
name: Bigi, Chiara
name: Mazzola, Federico
name: Sangiovanni, Giorgio
name: Wilson, Stephen D.
name: Di Sante, Domenico
name: Wang, Ziqiang
name: Zeljkovic, Ilija
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Berry phase and the related concept of Berry curvature can give rise to many unconventional phenomena in solids. In this work, we discover colossal orbital Zeeman effect of topological origin in a newly synthesized bilayer kagome metal TbV6Sn6. We use spectroscopic-imaging scanning tunneling microscopy to study the magnetic field induced renormalization of the electronic band structure. The nonmagnetic vanadium d-orbitals form Dirac crossings at the K point with a small mass gap and strong Berry curvature induced by the spin-orbit coupling. We reveal that the magnetic field leads to the splitting of gapped Dirac dispersion into two branches with giant momentum-dependent g factors, resulting in the substantial renormalization of the Dirac band. These measurements provide a direct observation of the magnetic field controlled orbital Zeeman coupling to the enormous orbital magnetic moments of up to 200 Bohr magnetons near the gapped Dirac points. Interestingly, the effect is increasingly non-linear, and becomes gradually suppressed at higher magnetic fields. Theoretical modeling further confirms the existence of orbital magnetic moments in TbV6Sn6 produced by the non-trivial spin-Berry curvature of the Bloch wave functions. Our work provides the first direct insight into the momentum-dependent nature of topological orbital moments and their tunability by magnetic field concomitant with the evolution of the spin-Berry curvature. Significantly large orbital magnetic moments driven by the Berry curvature can also be generated by other quantum numbers beyond spin, such as the valley in certain graphene-based structures, which may be unveiled using the same tools highlighted in our work.
Emys orbicularis subsp. galloitalica Fritz 1995
Creators: name: Iverson, John B.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Emydidae
Emys
Emys orbicularis
Emys orbicularis galloitalica fritz 1995:217

description: Emys orbicularis galloitalica Fritz 1995:217
Holotype:MNHN1993.5804(photographedintheoriginal description, p. 218, Fig. 29a, b); paratypes (55), BMNH 1933.9.3.17; HCC (1 specimen); MCZ 3452-53; MGL 42000417, 42006005-06, and 42006015-17; MHNG 926.38-40, 945.17, and 1080.18; MHNM 75A-B; MNHN 1993.5801-03 and 1980.997; MTDK 32366, 33710, 34282, and 34286-87; MZUF 7696, 7698-99, 11210, 12145- 46, 12132-33, 12950, 20042, 20638, 25206-07, and 35674; MZUN-Z 196, 399, and 945; NMB 21186; SMF 32694, 54346, 54410-11, and 57667; ZMB 36488 and 38090-91; ZSM (SLM) 5031/1-3 (Franzen & Glaw 2007:206).
Emys orbicularis (galloitalica) capolongoi Fritz 1995:204
Holotype: SMF 59593 (photographed in the original description, p. 211, Fig. 24); paratypes (34), HSC (5 specimens); MTD 17615; MZUF 7689- 90, 7733, 26587, and 30579-81; NHCL 1586- 87; NMB 19264, 19266, and 22420; NMW 14697-98, 14699 (2 specimens), and 21428 (3 specimens); RMNH 3356 (2 specimens); SMF 43328-29, and 50983; SMNS 7854 (Schlüter & Hallermann 1997:9); and ZFMK 55578-80.
Emys orbicularis (galloitalica) lanzai Fritz 1995:211
Holotype: MZUF 19095 (photographed in the original description, p. 214, Fig. 27); paratypes (67), BMNH 1920.1.20.573; GNM 4968; MGL 42006003-04; MZUF 7700-04, 13693, 13968- 72, 13973, 17256, 17260-62, 22576-77, 22085- 93, 20639, 35645-73; SMF 47280-81; SMNS 5491-92, 5495, and 7822 (Schlüter & Hallermann 1997:9).
Emys orbicularis hellenica Valenciennes in Bory de Saint-Vincent 1833:Pl. 8
Holotype: MNHN 1943 (Fritz 1992).
Emys iberica Valenciennes in Bory de Saint-Vincent 1833:Pl. 9
Holotype: Not located; illustrated in the original description (Pl. 9).
Emys orbicularis atra Werner 1897:15
Holotype: Not located; illustrated in the original description (Pl. I, Fig. 2).
Emys europaea maculosa Dürigen 1897: 15
Holotype: Not located.
Emys orbicularis ingauna Jesu, Plombo, Salvidio, Lamagni, Ortale, & Genta 2004:139
Holotype: MSNG 50650; paratypes (11), MSNG 35055A, 35055B, 38656A, 38656B, 50651-52, 50805; DIP.TE.RIS (Univ. Genova) 2503; and SMF 54346, and 54410-11.
description: Published as part of Iverson, John B., 2022, A review of Chelonian type specimens (order Testudines), pp. 1-85 in Megataxa 7 (1) on pages 34-35, DOI: 10.11646/megataxa.7.1.1, http://zenodo.org/record/5964441