cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
SoK: Can Trajectory Generation Combine Privacy and Utility?
Creators: name: Buchholz, Erik
name: Abuadbba, Alsharif
name: Wang, Shuo
name: Nepal, Surya
name: Kanhere, Salil S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: While location trajectories represent a valuable data source for analyses and location-based services, they can reveal sensitive information, such as political and religious preferences. Differentially private publication mechanisms have been proposed to allow for analyses under rigorous privacy guarantees. However, the traditional protection schemes suffer from a limiting privacy-utility trade-off and are vulnerable to correlation and reconstruction attacks. Synthetic trajectory data generation and release represent a promising alternative to protection algorithms. While initial proposals achieve remarkable utility, they fail to provide rigorous privacy guarantees. This paper proposes a framework for designing a privacy-preserving trajectory publication approach by defining five design goals, particularly stressing the importance of choosing an appropriate Unit of Privacy. Based on this framework, we briefly discuss the existing trajectory protection approaches, emphasising their shortcomings. This work focuses on the systematisation of the state-of-the-art generative models for trajectories in the context of the proposed framework. We find that no existing solution satisfies all requirements. Thus, we perform an experimental study evaluating the applicability of six sequential generative models to the trajectory domain. Finally, we conclude that a generative trajectory model providing semantic guarantees remains an open research question and propose concrete next steps for future research.
description: Added DOI: 10.56553/popets-2024-0068
Towards the superlubricity of polymer-steel interfaces with ionic liquids and carbon nanotubes
Creators: name: Wojciechowski, L.
name: Kubiak, K. J.
name: Boncel, S.
name: Marek, A.
name: Gapinski, B.
name: Runka, T.
name: Jedrysiak, R.
name: Ruczka, S.
name: Blaszkiewicz, P.
name: Mathia, T. G.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Frictional losses are responsible for significant energy waste in many practical applications, and superlubricity with a coefficient of friction lower than 0.01 is the goal of tribologists. In this paper, metal-on-polymer contact was analysed and close to superlubricity conditions for this material configuration were explored. A new lubricant has been proposed hinge on the phosphorus-based ionic liquid and carbon nanotubes as thickeners. Additionally, carbon nanotube mesh was doped with copper nanoparticles that allowed for the close to superlubricity state in a mild steel/polymer contact configuration under low normal load conditions. The adsorption of phosphorus onto metallic and polymer surfaces has been reported in EDS analysis. The formulation of the new lubricant allowed for stable dispersion with a carbon nanotube content as low as 0.1% wt. The carbon nanotubes and Cu nanoparticles have been analysed using TEM and SEM imaging. A tribological test in a block-on-ring system has been carried out. The wear of material, topography, and surface free energy have been analysed along with SEM/EDS images to explore the underlying mechanisms of friction and wear.
description: 18 pages
Polygastrophora undetermined
Creators: name: Khudhir, Manda
name: Hodda, Mike
name: Nicholas, Evelyn
name: Campbell, Jennifer
name: Nicholas, Warwick L.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Enoplea
Enoplida
Enchelidiidae
Polygastrophora
Polygastrophora undetermined

description: Polygastrophora sp.
Hays Inlet, QLD. Littoral Mud substrate. 1 female. 26.8.86
Hays Inlet, QLD. Shell grit substrate. 1 female. 26.8.86
Rosedale, NSW. Littoral Sand substrate. 1 male. 5.3.86
Shark Bay, WA. 1 female. 10.4.78
Genus Symplocostoma Bastian, 1865
description: Published as part of Khudhir, Manda, Hodda, Mike, Nicholas, Evelyn, Campbell, Jennifer & Nicholas, Warwick L., 2023, A catalogue of the nematode slide collection from the late W. L. Nicholas held at National Research Collections Australia, CSIRO, pp. 1-109 in Zootaxa 5388 (1) on page 37, DOI: 10.11646/zootaxa.5388.1.1, http://zenodo.org/record/10390008
JAXbind: Bind any function to JAX
Creators: name: Roth, Jakob
name: Reinecke, Martin
name: Edenhofer, Gordian
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Machine Learning (cs.LG)
subject: Computation (stat.CO)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: JAX is widely used in machine learning and scientific computing, the latter of which often relies on existing high-performance code that we would ideally like to incorporate into JAX. Reimplementing the existing code in JAX is often impractical and the existing interface in JAX for binding custom code either limits the user to a single Jacobian product or requires deep knowledge of JAX and its C++ backend for general Jacobian products. With JAXbind we drastically reduce the effort required to bind custom functions implemented in other programming languages with full support for Jacobian-vector products and vector-Jacobian products to JAX. Specifically, JAXbind provides an easy-to-use Python interface for defining custom, so-called JAX primitives. Via JAXbind, any function callable from Python can be exposed as a JAX primitive. JAXbind allows a user to interface the JAX function transformation engine with custom derivatives and batching rules, enabling all JAX transformations for the custom primitive.
description: 4 pages, Github: https://github.com/NIFTy-PPL/JAXbind
Symplocostoma longicolle Bastian 1865
Creators: name: Khudhir, Manda
name: Hodda, Mike
name: Nicholas, Evelyn
name: Campbell, Jennifer
name: Nicholas, Warwick L.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Enoplea
Enoplida
Enchelidiidae
Symplocostoma
Symplocostoma longicolle

description: Symplocostoma longicolle Bastian, 1865
Locality unrecorded, Australia. 4 life stage unrecorded. Date unrecorded.
description: Published as part of Khudhir, Manda, Hodda, Mike, Nicholas, Evelyn, Campbell, Jennifer & Nicholas, Warwick L., 2023, A catalogue of the nematode slide collection from the late W. L. Nicholas held at National Research Collections Australia, CSIRO, pp. 1-109 in Zootaxa 5388 (1) on page 37, DOI: 10.11646/zootaxa.5388.1.1, http://zenodo.org/record/10390008
Magneto-optical properties of a quantum dot array interacting with a far-infrared photon mode of a cylindrical cavity
Creators: name: Gudmundsson, Vidar
name: Mughnetsyan, Vram
name: Goan, Hsi-Sheng
name: Chai, Jeng-Da
name: Abdullah, Nzar Rauf
name: Tang, Chi-Shung
name: Moldoveanu, Valeriu
name: Manolescu, Andrei
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We model the equilibrium properties of a two-dimensional electron gas in a square lateral superlattice of quantum dots in a GaAs heterostructure subject to an external homogeneous perpendicular magnetic field and a far-infrared circular cylindrical photon cavity with one quantized mode, the TE011 mode. In a truncated linear basis constructed by a tensor product of the single-electron states of the noninteracting system and the eigenstates of the photon number operator, a local spin density approximation of density functional theory is used to compute the electron-photon states of the two-dimensional electron gas in the cavity. The common spatial symmetry of the vector fields for the external magnetic field and the cavity photon field in the long wavelength approximation enhances higher order magnetic single- and multi-photon processes for both the para- and the diamagnetic electron-photon interactions. The electron-photon coupling introduces explicit photon replicas into the bandstructure and all subbands gain a photon content, constant for each subband, that can deviate from an integer value as the coupling is increased or the photon energy is varied. The subbands show a complex Rabi anticrossing behavior when the photon energy and the coupling bring subbands into resonances. The complicated energy subband structure leads to photon density variations in reciprocal space when resonances occur in the spectrum. The electron-photon coupling polarizes the charge density and tends to reduce the Coulomb exchange effects as the coupling strength increases.
description: RevTeX - pdfLaTeX, 12 pages with 8 included pdf figures
Physics-Guided Neural Networks for Intraventricular Vector Flow Mapping
Creators: name: Ling, Hang Jung
name: Bru, Salomé
name: Puig, Julia
name: Vixège, Florian
name: Mendez, Simon
name: Nicoud, Franck
name: Courand, Pierre-Yves
name: Bernard, Olivier
name: Garcia, Damien
Publisher: name: arXiv
Year: 2024
Subjects: subject: Image and Video Processing (eess.IV)
subject: Artificial Intelligence (cs.AI)
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

description: Intraventricular vector flow mapping (iVFM) seeks to enhance and quantify color Doppler in cardiac imaging. In this study, we propose novel alternatives to the traditional iVFM optimization scheme by utilizing physics-informed neural networks (PINNs) and a physics-guided nnU-Net-based supervised approach. When evaluated on simulated color Doppler images derived from a patient-specific computational fluid dynamics model and in vivo Doppler acquisitions, both approaches demonstrate comparable reconstruction performance to the original iVFM algorithm. The efficiency of PINNs is boosted through dual-stage optimization and pre-optimized weights. On the other hand, the nnU-Net method excels in generalizability and real-time capabilities. Notably, nnU-Net shows superior robustness on sparse and truncated Doppler data while maintaining independence from explicit boundary conditions. Overall, our results highlight the effectiveness of these methods in reconstructing intraventricular vector blood flow. The study also suggests potential applications of PINNs in ultrafast color Doppler imaging and the incorporation of fluid dynamics equations to derive biomarkers for cardiovascular diseases based on blood flow.
description: 12 pages, accepted for publication in IEEE TUFFC; camera ready corrections, corrected acknowledgments
Super-Planckian radiative heat transfer between coplanar two-dimensional metals
Creators: name: Zhu, Tao
name: Zhang, Yong-Mei
name: Wang, Jian-Sheng
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using the nonequilibrium Green's function formalism, we propose a general microscopic framework to investigate the radiative heat transfer (RHT) between coplanar objects with a square lattice. We employ the obtained formulas to two-dimensional (2D) metal configurations with a tight-binding model and the Drude model. Our results reveal that the RHT between coplanar 2D metals is significantly larger than black-body radiation in both the near and far fields, leading to a global super-Planckian RHT. As the separation distance increases, the heat flux density exhibits a rapid decrease in the near field, followed by a slower decrease and eventual $1/d$ dependence in the far field, while maintaining a much higher magnitude than black-body radiation. Evanescent waves dominate the heat transfer in the near field, while propagating waves dominate the far field. Surprisingly, the propagating heat flux remains almost constant over a wide range of distances, resulting in a super-Planckian behavior in the far field. The dispersion relation of the spectrum function reveals distinct contributions from propagating and evanescent waves, with possible origins from surface plasmon resonance. These findings provide insights into the unique characteristics of RHT between coplanar 2D metals and highlight the potential for achieving enhanced heat transfer beyond the black-body limit. Our method is applicable to any coplanar objects with square lattices, paves the way for expanded investigations into various lattice geometries.
description: 10 pages,4 figures
Electrostatic dipole polarizability and plasmon resonances of multilayer nanoshells
Creators: name: Ugwuoke, L. C.
name: Tame, M. S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a generalized formula for calculating the dipole polarizability of spherical multilayer nanoshells (MNSs) within the long-wavelength approximation (LWA). Given a MNS with a finite number of concentric layers, radii, and dielectric properties, embedded in a dielectric medium, in the presence of a uniform electric field, we show that its frequency-dependent and complex dipole polarizability can be expressed in terms of the dipole polarizability of the preceding MNS. This approach is different from previous more involved methods where the LWA polarizability of a MNS is usually derived from scattering coefficients. Using both finite-element method- and Mie theory-based simulations, we show that our proposed formula reproduces the usual LWA results, when it is used to predict absorption spectra, by comparing the results to simulated spectra obtained from MNSs with $n$ number of layers up to $n = 6$ layers. An iterative algorithm for calculating the dipole polarizability of a MNS based on the generalized formula is presented. A Fröhlich function whose zeroes correspond to the dipolar localized surface plasmon resonances (LSPRs) supported by the MNS is proposed. We identify a pairing behaviour by some LSPRs in the Fröhlich function that might also be useful for mode characterization.
description: 21 pages, 4 figures, 2 tables
Symplocostoma undetermined
Creators: name: Khudhir, Manda
name: Hodda, Mike
name: Nicholas, Evelyn
name: Campbell, Jennifer
name: Nicholas, Warwick L.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Enoplea
Enoplida
Enchelidiidae
Symplocostoma
Symplocostoma undetermined

description: Symplocostoma sp.
Broulee, NSW. Sub-littoral depth. Eklonia host plant. 2 males; 3 females. 31.1.77
Broulee, NSW. Sub-littoral depth. Ascophyllum host plant. 1 male; 1 female; 2 juveniles. 31.1.77
Broulee, NSW. Sub-littoral depth. Seaweed host plant. 3 males; 3 females; 1 life stage unrecorded. 23.3.86; 7.5.86 Darwin, NT. 1 life stage unrecorded. Date unrecorded.
Kioloa, NSW. Littoral Sand substrate. 1 male; 1 female; 1 life stage unrecorded. 25.2.76; 31.1.77; 18.2.75
Shark Bay, WA. 1 life stage unrecorded. 10.4.78
Locality unrecorded, Australia. 1 life stage unrecorded. 4.5.79
Genus Unidentified
Cronulla, NSW. Sub-littoral Sand substrate.1 life stage unrecorded. 23.11.77
Seaspray, VIC. Littoral Sand substrate. 1 life stage unrecorded. 3.12.86
description: Published as part of Khudhir, Manda, Hodda, Mike, Nicholas, Evelyn, Campbell, Jennifer & Nicholas, Warwick L., 2023, A catalogue of the nematode slide collection from the late W. L. Nicholas held at National Research Collections Australia, CSIRO, pp. 1-109 in Zootaxa 5388 (1) on page 37, DOI: 10.11646/zootaxa.5388.1.1, http://zenodo.org/record/10390008
PLACENTAL AND NEONATAL MORPHOMETRY INCLUDING DOPPLER INDICES IN HIGH-RISK VERSUS NORMAL PREGNANCIES
Creators: name: Gandla Mahalinga
name: Dr. K V Rajasekhar M.D
name: Dr. M Venkateshwar Reddy M.D
name: Dr. Nagaraj S M.D
name: Dr. S. Saravana Kumar
Publisher: name: Zenodo
Year: 2024
Subjects: High-Risk Pregnancies, Gestational Diabetes, Hypertension, Doppler Indices, Preeclampsia Toxaemia, Intrauterine Growth Restriction, Placenta.

description: Abstract

Background: High-risk pregnancies, encompassing Pregnancy-Induced Hypertension (PIH), Gestational Diabetes Mellitus (GDM), Preeclampsia Toxaemia (PET), and Intrauterine Growth Restriction (IUGR), represent intricate medical challenges with potential repercussions for maternal and fetal health. This research undertakes a comprehensive comparative investigation into the variations of Doppler indices and placental parameters within the context of these high-risk conditions when juxtaposed against pregnancies characterized as normal. Method: Employing a rigorous cross-sectional study design, a diverse cohort of pregnant individuals with gestational diabetes, IUGR, PIH, and preeclampsia is meticulously assembled. Additionally, a group of normal pregnant women serves as the comparative reference. Doppler ultrasound assessments viz Pulsatilityindexare carefully performed to estimate blood flow velocities within critical maternal and fetal vessels, while placental parameters are meticulously quantified, encompassing dimensions, vascular architecture, and morphological features. Results: Except in the GDM group, all high-risk groups had reduced estimated placental weight actual birth weight, thickness, placental diameter, and placental cotyledon count than normal pregnant women. All the high-risk groups showed a highly significant elevation of the Pulsatility index of the Umbilical artery (PI of UA) and Pulsatility index of the Middle cerebral artery (PI of MCA) than normal but the PI of MCA was significantly reduced in the PET group individuals than in normal. The Cerebroplacental Ratio in the GDM and IUGR groups revealed markedly greater values, whereas PET showed lower values. IUGR and PIH groups showed a substantial reduction in the fetal birth weight. All the high-risk groups (GDM, IUGR, PIH, and PET) showed a highly significant reduction in Luminal Area Umbilical artery 1than the normal pregnant women. In IUGR marginal placental insertion was very high, followed by GDM and PET groups. Conclusion: This study reveals that Doppler indices, placental parameters, newborn weight, and their related ratios may be utilized to anticipate gestation difficulties and also to gain insight into the pathophysiology of problematic conceptions.
Adoncholaimus fuscus Filipjev 1918
Creators: name: Khudhir, Manda
name: Hodda, Mike
name: Nicholas, Evelyn
name: Campbell, Jennifer
name: Nicholas, Warwick L.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Enoplea
Enoplida
Oncholaimidae
Adoncholaimus
Adoncholaimus fuscus

description: Adoncholaimus fuscus (Bastian, 1865) Filipjev, 1918
Scolt Head, UK. Littoral Sand substrate. 5 males; 2 juveniles ..73
Genus Curvolaimus Wieser, 1953
description: Published as part of Khudhir, Manda, Hodda, Mike, Nicholas, Evelyn, Campbell, Jennifer & Nicholas, Warwick L., 2023, A catalogue of the nematode slide collection from the late W. L. Nicholas held at National Research Collections Australia, CSIRO, pp. 1-109 in Zootaxa 5388 (1) on page 37, DOI: 10.11646/zootaxa.5388.1.1, http://zenodo.org/record/10390008
Vertex corrections to conductivity in the Holstein model: A numerical-analytical study
Creators: name: Janković, Veljko
name: Mitrić, Petar
name: Tanasković, Darko
name: Vukmirović, Nenad
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The optical-conductivity profile carries information on electronic dynamics in interacting quantum many-body systems. Its computation is a formidable task that is usually approached by invoking the single-particle (bubble) approximation and neglecting the vertex corrections, the importance of which remains elusive even in model Hamiltonian calculations. Here, we combine analytical arguments with our recent breakthroughs in numerically exact and approximate calculations of finite-temperature real-time correlation functions to thoroughly assess the importance of vertex corrections in the one-dimensional Holstein polaron model. We find, both analytically and numerically, vanishing vertex corrections to optical conductivity in the limits of zero electron--phonon interaction, zero electronic bandwidth, and infinite temperature. Furthermore, our numerical results show that vertex corrections to the electron mobility also vanish in many parameter regimes between these limits. In some of these cases, the vertex corrections still introduce important qualitative changes to the optical-conductivity profile in comparison to the bubble approximation even though the self-energy remains approximately local. We trace these changes back to the bubble approximation not fully capturing a time-limited slow-down of the electron on intermediate time scales between ballistic and diffusive transport. We find that the vertex corrections are overall most pronounced for intermediate electron--phonon interaction and may increase or decrease the bubble-approximation mobility depending on the values of model parameters.
description: Final, published version; main text: 28 pages, 12 figures; supplementary material: 13 pages, 5 figures
Curvolaimus undetermined
Creators: name: Khudhir, Manda
name: Hodda, Mike
name: Nicholas, Evelyn
name: Campbell, Jennifer
name: Nicholas, Warwick L.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Enoplea
Enoplida
Oncholaimidae
Curvolaimus
Curvolaimus undetermined

description: Curvolaimus sp.
Candlagan, NSW. 1 life stage unrecorded. 13.1.80
Genus Metoncholaimus Filipjev, 1918
description: Published as part of Khudhir, Manda, Hodda, Mike, Nicholas, Evelyn, Campbell, Jennifer & Nicholas, Warwick L., 2023, A catalogue of the nematode slide collection from the late W. L. Nicholas held at National Research Collections Australia, CSIRO, pp. 1-109 in Zootaxa 5388 (1) on page 37, DOI: 10.11646/zootaxa.5388.1.1, http://zenodo.org/record/10390008
Human remains and burial practices on Ilin Island, Mindoro Occidental, Philippines.
Creators: name: Uldin, Tanya
Publisher: name: Zenodo
Year: 2019
Subjects: subject: Bioarchaeology
subject: Biological Anthropology
subject: Southeast Asian People/history
subject: Island Southeast Asia
subject: Archaeology
subject: Human Skeletal Remains
subject: Early Islanders
subject: Early and Mid-Holocene
subject: Mindoro
subject: Philippines

description: Abstract

Mindoro is the seventh-largest island of the Philippines. Its geographical location suggests that it could have been an entry point for the settlement of the oceanic part of the Philippine archipelago. Ilin Island is a small island just off the coast of Mindoro. It is not only the southernmost part of Mindoro and thus closest to Palawan Island situated on the Sunda Shelf, but it also offers suitable geological conditions (karstic limestone formations) with numerous rock shelters and caves that make conservation of past human settlements very likely. Archaeological surveys and excavations in recent years have shown that the settlement history of Ilin Island is diverse, reflects how humans have changed their subsistence strategies in response to climate fluctuations, and that there is potential for further discoveries of human remains and burials. A flexed burial from Bubog I, a rock shelter located at the southern end of Ilin Island, has been directly dated to c. 5000 cal BP and, a recently discovered modified phalange from Bubog I, associated with remains of animal bones, might be of similar age. Since 2018, Cansubong II, a cave site located near the shore at the northern end of the island, was excavated and has delivered the remains of several burials that can be assigned to a younger period. Related to the human remains are modified artifacts made of bone and shell that were most likely laid down as grave goods and pottery. This presentation will introduce the human remains and burials of Bubog I and Cansubong II and discuss their chronological, biological, and socio-cultural context within SE Asia.
Metoncholaimus undetermined
Creators: name: Khudhir, Manda
name: Hodda, Mike
name: Nicholas, Evelyn
name: Campbell, Jennifer
name: Nicholas, Warwick L.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Enoplea
Enoplida
Oncholaimidae
Metoncholaimus
Metoncholaimus undetermined

description: Metoncholaimus sp.
Rapid Creek, NT. Littoral Sand substrate. 2 males; 1 female. 19.10.92
Rosedale, NSW. Littoral depth. 1 life stage unrecorded. 5.3.86
South Moruya, NSW. Littoral Sand substrate. 1 male. 15.3.97
Genus Oncholaimellus de Man, 1890
description: Published as part of Khudhir, Manda, Hodda, Mike, Nicholas, Evelyn, Campbell, Jennifer & Nicholas, Warwick L., 2023, A catalogue of the nematode slide collection from the late W. L. Nicholas held at National Research Collections Australia, CSIRO, pp. 1-109 in Zootaxa 5388 (1) on pages 37-38, DOI: 10.11646/zootaxa.5388.1.1, http://zenodo.org/record/10390008
Electronic transport, metal-insulator transition, and Wigner crystallization in transition metal dichalcogenide monolayers
Creators: name: Huang, Yi
name: Sarma, Sankar Das
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Two recent electronic transport experiments from Columbia University and Harvard University have reported record high mobility and low channel densities in transition metal dichalcogenide (TMD) WSe$_2$ monolayers [J. Pack, et al., arXiv:2310.19782; A. Y. Joe, et al., Phys. Rev. Lett. 132, 056303 (2024)]. A two-dimensional (2D) metal-insulator transition (MIT) is demonstrated in the Columbia sample at low densities, a regime where the formation of a Wigner crystal (WC) is theoretically anticipated in the absence of disorder. We employ the finite-temperature Boltzmann theory to understand the low-temperature transport properties of monolayer TMDs, taking into account realistic disorder scattering. We analyze the experimental results, focusing on the 2D MIT behavior and the influence of temperature and density on mobility and resistivity in the metallic phase. We provide a discussion of the nontrivial carrier density dependence of our transport results. Our analysis elucidates the linear-in-$T$ resistivity in the metallic phase, attributing it to Friedel oscillations associated with screened charged impurities. Furthermore, we explore whether Coulomb disorder could lead to the MIT through either a quantum Anderson localization transition or a classical percolation transition. Our theoretical estimates of the disorder-induced MIT critical densities, although smaller, are within a factor of ~2 of the experimental critical density. We examine the exceptionally high melting temperature ~10 K of WCs observed experimentally in the MoSe$_2$ systems at low density, an order of magnitude larger than the pristine melting temperature. This suggests that the observed 2D low-density MIT behavior is likely a result of the complex interplay between disorder effects and interaction-driven WC physics, offering a comprehensive understanding of the low-temperature transport phenomena in TMD monolayers.
description: 25 pages, 9 figures
Establishing the relationship between generalized crystallographic texture and macroscopic yield surfaces using partial input convex neural networks
Creators: name: van Wees, Lloyd
name: Shankar, Karthik
name: Fuhg, Jan N.
name: Bouklas, Nikolaos
name: Shade, Paul
name: Obstalecki, Mark
name: Kasemer, Matthew
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this study, we present a methodology to predict the macroscopic yield surface of metals and metallic alloys with general crystallographic textures. In previous work, we have established the use of partially input convex neural networks (pICNN) as macroscopic yield functions of crystal plasticity simulations. However, this work was performed with an over-abundance of data, and on limited crystallographic textures. Here, we extend this study to approach more realistic material states (i.e., complex crystallographic textures), and consider data-availability as a major driver for our approach. We present our modified framework capable of handling generalized material states and demonstrate its effectiveness on samples with multi-modal textures deformed under plane stress conditions. We further describe an adaptive algorithm for the generation of training data as informed by the shape of yield surfaces to reduce the time for both the generation of training data as well as pICNN training. Finally, we will discuss errors in both training and test datasets, limitations, and future extensibility.
description: 29 pages, 16 figures
SoK: Trusting Self-Sovereign Identity
Creators: name: Krul, Evan
name: Paik, Hye-young
name: Ruj, Sushmita
name: Kanhere, Salil S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Digital identity is evolving from centralized systems to a decentralized approach known as Self-Sovereign Identity (SSI). SSI empowers individuals to control their digital identities, eliminating reliance on third-party data custodians and reducing the risk of data breaches. However, the concept of trust in SSI remains complex and fragmented. This paper systematically analyzes trust in SSI in light of its components and threats posed by various actors in the system. As a result, we derive three distinct trust models that capture the threats and mitigations identified across SSI literature and implementations. Our work provides a foundational framework for future SSI research and development, including a comprehensive catalogue of SSI components and design requirements for trust, shortcomings in existing SSI systems and areas for further exploration.
description: Accepted at PETS'24 Issue 3
Oncholaimellus undetermined
Creators: name: Khudhir, Manda
name: Hodda, Mike
name: Nicholas, Evelyn
name: Campbell, Jennifer
name: Nicholas, Warwick L.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Enoplea
Enoplida
Oncholaimidae
Oncholaimellus
Oncholaimellus undetermined

description: Oncholaimellus sp.
Broulee, NSW. Littoral Sand substrate. 1 life stage unrecorded. 9.5.84
Clyde River Estuary, NSW. Littoral Sand substrate. 1 female. 17.8.76
Hays Inlet, QLD. Littoral Mud substrate. Mangrove host plant. 3 males; 1 female; 1 juvenile. 26.8.86; 30.8.86 Hays Inlet, QLD. Sand substrate. 1 male. 26.8.86
Hays Inlet, QLD. Mud substrate. 4 males; 11 females; 1 juvenile. 26.8.86
Scolt Head, UK. 22 life stage unrecorded..73
Genus Oncholaimus Dujardin, 1845
description: Published as part of Khudhir, Manda, Hodda, Mike, Nicholas, Evelyn, Campbell, Jennifer & Nicholas, Warwick L., 2023, A catalogue of the nematode slide collection from the late W. L. Nicholas held at National Research Collections Australia, CSIRO, pp. 1-109 in Zootaxa 5388 (1) on page 38, DOI: 10.11646/zootaxa.5388.1.1, http://zenodo.org/record/10390008
THE IMPACT OF ONLINE LEARNING QUALITY SERVICE ON STUDENTS ONLINE LEARNING SATISFACTION
Creators: name: YOUDI ARMANSAH
name: SHARIPAH RUZAINA BINTI SYED ARIS
name: MUH KHAIRUL WAJEDI IMAMI
name: MUZAKKIR WALAD
name: RIYAN HIDAYAT
name: CINDHY RIZKIKA AL-INAYAH
Publisher: name: Zenodo
Year: 2024
Subjects: Online Learning, Online Learning Service Quality, Students Online Learning Satisfaction.

description: Abstract

The current research aims to examine the impact of online learning service quality on student online learning satisfaction. The participants were determined through the purposive sampling method. A total of 158 university students participated in the current research. The participants were given questionnaires related to online learning quality service and student online learning satisfaction. The data gathered will then be analyzed in the statistical package for social science (SPSS), employing several analyses, namely descriptive analysis, Pearson correlation coefficient, and multiple regression analysis. The descriptive analysis concludes that the level of online learning service quality and students' satisfaction in online learning settings were very high. The Pearson correlation indicates a strong and significant correlation between online learning quality service and student online learning satisfaction. The result of the multiple regression analysis emphasized the significant impact of the online learning quality service on student online learning satisfaction, where three dimensions of online learning quality service significantly contributed to student online learning satisfaction, namely internet self-efficacy, technology quality, and convenient usage. This research contributed to proving the impact of online learning quality service on student online learning satisfaction. This research also predicts several aspects of online learning service quality that significantly affect students online learning satisfaction.
Oncholaimus balli Nicholas & Stewart 1984
Creators: name: Khudhir, Manda
name: Hodda, Mike
name: Nicholas, Evelyn
name: Campbell, Jennifer
name: Nicholas, Warwick L.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Chromadorea
Rhabditida
Diplogastridae
Oncholaimus
Oncholaimus balli

description: Oncholaimus balli Nicholas & Stewart, 1984
Lake Wisdom, Papua New Guinea. Freshwater Mud substrate. Moss host plant. 9 males; 14 females; 7 juveniles. 11.11.73
description: Published as part of Khudhir, Manda, Hodda, Mike, Nicholas, Evelyn, Campbell, Jennifer & Nicholas, Warwick L., 2023, A catalogue of the nematode slide collection from the late W. L. Nicholas held at National Research Collections Australia, CSIRO, pp. 1-109 in Zootaxa 5388 (1) on page 38, DOI: 10.11646/zootaxa.5388.1.1, http://zenodo.org/record/10390008
Oncholaimus undetermined
Creators: name: Khudhir, Manda
name: Hodda, Mike
name: Nicholas, Evelyn
name: Campbell, Jennifer
name: Nicholas, Warwick L.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Chromadorea
Rhabditida
Diplogastridae
Oncholaimus
Oncholaimus undetermined

description: Oncholaimus sp.
Broulee, NSW. Littoral Sand substrate. 2 males; 3 females; 4 life stage unrecorded. 22.6.96; 26.7.78; 4.10.76; 23.3.86
Broulee, NSW. Littoral Sand substrate. Ascophyllum host plant. 1 juvenile. 31.1.77
Broulee, NSW. Littoral Sand substrate. Eklonia host plant. 1 juvenile; 1 life stage unrecorded. 31.1.77
Candlagan, NSW. 1 life stage unrecorded. 14.7.77
Cronulla, NSW. Sub-littoral Sand substrate. 3 males; 3 juveniles; 15 life stage unrecorded. 6.5.77; 23.11.77
Hays Inlet, QLD. Littoral Mud substrate. Mangrove host plant. 8 males; 5 females; 3 juveniles; 1 life stage unrecorded. 26.8.86; 30.8.86
Hunter River Estuary, NSW. Littoral Mud substrate. Mangrove host plant. 1 male; 1 female; 3 juveniles ..12.82 Kioloa, NSW. Littoral Sand substrate. 2 life stage unrecorded. 18.2.75; 27.1.86
Lorne, VIC. Sub-littoral Sand substrate. 1 life stage unrecorded. Date unrecorded.
Rapid Creek, NT. Littoral Sand substrate. 3 males; 3 females; 1 life stage unrecorded. 19.10.92
Rosedale, NSW. Littoral depth. 1 male; 4 juveniles; 1 life stage unrecorded. 5.3.86
Shark Bay, WA. 1 life stage unrecorded. 10.4.78
South Moruya, NSW. Littoral Sand substrate. 4 males; 1 female; 1 life stage unrecorded. 18.11.77; 17.12.92; 15.3.97
Ulladulla, NSW. 1 life stage unrecorded. 28.3.75
Locality unrecorded, NSW. 1 male; 1 female. Date unrecorded.
Locality unrecorded, Australia. 2 males; 1 female; 3 juveniles; 3 life stage unrecorded. 4.10.88
Genus Pontonema Leidy, 1855
description: Published as part of Khudhir, Manda, Hodda, Mike, Nicholas, Evelyn, Campbell, Jennifer & Nicholas, Warwick L., 2023, A catalogue of the nematode slide collection from the late W. L. Nicholas held at National Research Collections Australia, CSIRO, pp. 1-109 in Zootaxa 5388 (1) on page 38, DOI: 10.11646/zootaxa.5388.1.1, http://zenodo.org/record/10390008
Non-adiabatic electronic relaxation of tetracene from its brightest singlet excited state
Creators: name: Scognamiglio, Audrey
name: Thalmann, Karin S.
name: Hartweg, Sebastian
name: Rendler, Nicolas
name: Bruder, Lukas
name: Coto, Pedro B.
name: Thoss, Michael
name: Stienkemeier, Frank
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The ultrafast relaxation dynamics of tetracene following UV excitation to a bright singlet state S6 has been studied with time-resolved photoelectron spectroscopy. With the help of high-level ab-initio multireference perturbation theory calculations, we assign photoelectron signals to intermediate dark electronic states S3, S4 and S5 as well as a to a low-lying electronic state S2. The energetic structure of these dark states has not been determined experimentally previously. The time-dependent photoelectron yields assigned to the states S6, S5 and S4 have been analyzed and reveal the depopulation of S6 within 50 fs, while S5 and S4 are populated with delays of about 50 and 80 fs. The dynamics of the lower-lying states S3 and S2 seem to agree with a delayed population coinciding with the depopulation of the higher-lying states S4-S6, but could not be elucidated in full detail due to the low signal levels of the corresponding two-photon ionization probe processes.
description: The following article has been accepted by The Journal of Chemical Physics. After it is published, it will be found at https://doi.org/10.1063/5.0214006
Pontonema undetermined
Creators: name: Khudhir, Manda
name: Hodda, Mike
name: Nicholas, Evelyn
name: Campbell, Jennifer
name: Nicholas, Warwick L.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Enoplea
Enoplida
Oncholaimidae
Pontonema
Pontonema undetermined

description: Pontonema sp.
Broulee, NSW. Littoral Sand substrate. Eklonia host plant. 2 juveniles. 31.1.77; 3.6.78
Cronulla, NSW. Sand substrate. 1 male. 12.5.77
Kioloa, NSW. Littoral Sand substrate. 1 juvenile; 1 life stage unrecorded. 18.2.75
Rapid Creek, NT. Littoral Mud substrate. Rhizophora host plant. 1 female. 16.8.86
South Moruya, NSW. Littoral Sand substrate. 1 juvenile. 11.8.95
Genus Unidentified
Rapid Creek, NT. Littoral Sand substrate.1 life stage unrecorded. 19.10.92
Genus Viscosia de Man, 1890
description: Published as part of Khudhir, Manda, Hodda, Mike, Nicholas, Evelyn, Campbell, Jennifer & Nicholas, Warwick L., 2023, A catalogue of the nematode slide collection from the late W. L. Nicholas held at National Research Collections Australia, CSIRO, pp. 1-109 in Zootaxa 5388 (1) on pages 38-39, DOI: 10.11646/zootaxa.5388.1.1, http://zenodo.org/record/10390008
Inflation, the Hubble Tension and Early Dark Energy: an alternative overview
Creators: name: Giarè, William
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I review and discuss the possible implications for inflation resulting from considering new physics in light of the Hubble tension. My study is motivated by a simple argument that the constraints on inflationary parameters, most typically the spectral index $n_s$, depend to some extent on the cosmological framework. To avoid broadening the uncertainties resulting from marginalizing over additional parameters (typical in many alternative models), I first adopt the same alternative viewpoint of previous studies and analyze what happens if a physical theory can fix extra parameters to non-standard values. Focusing on the dark energy equation of state $w$ and the effective number of relativistic species $N_{\rm{eff}}$, I confirm that physical theories able to fix $w \approx -1.2$ or $N_{\rm{eff}} \approx 3.9$ produce values of $H_0$ from CMB and BAO in line with the local distance ladder estimate. While in the former case I do not find any relevant implications for inflation, in the latter scenarios, I observe a shift towards $n_s \approx 1$. From a model-selection perspective, both cases are strongly disfavored compared to $Λ$CDM. However, models with $N_{\rm{eff}} \approx 3.3 - 3.4$ could bring the $H_0$ tension down to $\sim 3σ$ while being moderately disfavored. Yet, this is enough to change the constraints on inflation so that the most accredited models (e.g., Starobinsky inflation) would no longer be favored by data. I then focus on Early Dark Energy (EDE), arguing that an EDE fraction $f_{\rm{EDE}}\sim 0.04 - 0.06$ (only able to mildly reduce the $H_0$-tension down to $\sim 3σ$) could already require a similar change in perspective on inflation. In fact, performing a full joint analysis of EDE and Starobinsky inflation, I find that the two models can hardly coexist for $f_{\rm{EDE}}\gtrsim 0.06$.
description: 26 pages, 10 figures. V2: Additional references added, some aspects of the analysis clarified regarding the likelihoods used and the implications of the results. Version accepted for publication in PRD
The complete exterior spacetime of spherical Brans-Dicke stars
Creators: name: Chauvineau, Bertrand
name: Nguyen, Hoang Ky
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We derive the complete expression for the Brans Class I exterior spacetime explicitly in terms of the energy and pressures profiles of a stationary spherisymmetric gravity source. This novel and generic expression is achieved in a parsimonious manner, requiring only a subset of the Brans-Dicke field equation and the scalar equation. For distant orbiting test particles, this expression promptly provides a simple, closed and exact formula of the [textgreek]\textgreek{g} Eddington parameter, which reads γ_{exact}=((ω+1+(ω+2)Θ)/(ω+2+(ω+1)Θ)), where Θ is the ratio of the star's "total pressure" integral over its energy integral. This non-perturbative result reproduces the usual Post-Newtonian ((ω+1)/(ω+2)) expression in the case of a "Newtonian star", in which the pressure is negligible with respect to the energy density. Furthermore, it converges to the General Relativity value (γ_{GR}=1) as the star's equation of state approaches that of ultra-relativistic matter (in which case Θ approaches 1), a behavior consistent with broader studies on scalar-tensor gravity. Our derivation underscores the essence of these results involving (1) the key relevant portion of the Brans-Dicke field equations, (2) the uniqueness of the Brans Class I vacuum solution for the non-phantom action, viz. ω>-3/2, and (3) the involvement of only two free parameters in this solution, hence requiring two quantities (energy and pressure integrals) of the mass source to fully characterize the solution. From a practical standpoint, it elucidates how a given stellar interior structure model determines the star's exterior gravitational field and impacts the motions of light objects (such as planets and accretion disks) orbiting it.
description: 1 figure. Correcting a typo in Eq (19) (an unjustified 4*pi factor has been removed)
Knowledge Graph Completion using Structural and Textual Embeddings
Creators: name: Alqaaidi, Sakher Khalil
name: Kochut, Krzysztof
Publisher: name: arXiv
Year: 2024
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences
subject: I.2.4

description: Knowledge Graphs (KGs) are widely employed in artificial intelligence applications, such as question-answering and recommendation systems. However, KGs are frequently found to be incomplete. While much of the existing literature focuses on predicting missing nodes for given incomplete KG triples, there remains an opportunity to complete KGs by exploring relations between existing nodes, a task known as relation prediction. In this study, we propose a relations prediction model that harnesses both textual and structural information within KGs. Our approach integrates walks-based embeddings with language model embeddings to effectively represent nodes. We demonstrate that our model achieves competitive results in the relation prediction task when evaluated on a widely used dataset.
Enhanced second harmonic generation in high-$Q$ all-dielectric metasurfaces with backward frequency conversion
Creators: name: Tu, Xu
name: Feng, Siqi
name: Li, Jiajun
name: Xing, Yangguang
name: Wu, Feng
name: Liu, Tingting
name: Xiao, Shuyuan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Here we employ the quasi-bound state in the continuum (quasi-BIC) resonance in all-dielectric metasurfaces for efficient nonlinear processes in consideration of the backward frequency conversion. We theoretically study the second-harmonic generation (SHG) from symmetry-broken AlGaAs metasurfaces and reveal the efficiency enhancement empowered by high-$Q$ quasi-BIC resonances. By introducing the correction term of nonlinear polarization at the fundamental wave field to the conventional undepleted approximation, we uncover the effect of backward frequency conversion on the nonlinear conversation efficiency. The SHG efficiency as $2.45\times10^{-2}$ with the developed depleted model, shows a $14.3\%$ decrease compared with $2.86\times10^{-2}$ in conventional undepleted approximation, under the incident intensity of 10 MW/cm$^{2}$. Our results are of significant importance for designing efficient nonlinear metasurfaces supporting high-$Q$ resonances.