cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Basics of the Research Data Management (BRDM) Course: Course Structure and Learning Objectives 2020
Creators: name: Rantasaari, Jukka
name: Löyttyniemi, Eliisa
name: Cooper, Helen
name: Henriksson, Blanka
name: Huttunen, Sari
name: Kaarakainen, Meri-Tuulia
name: Kanerva, Päivi
name: Kaurahalme, Olli-Pekka
name: Lauren, Susanna
name: Linna, Anna-Kaarina
name: Neuman, Yrsa
name: Pennanen, Mikko
name: Strandell-Laine, Camilla
name: Ryödi, Eeva
name: Sarpila, Outi
name: Snåre, Martina
name: Steudle, Onerva
name: Susi, Petri
name: Tonttila, Leena
name: Tuominen, Eino
Publisher: name: Zenodo
Year: 2020
Subjects: Research Data Management
RDM
Doctoral Students
Researchers
Graduate Students
Learning Objectives
Data Literacy
Interview Study
Curriculum

description: 3 ECTS Research Data Management Curriculum for Doctoral Students and Post Doc Researchers at the University of Turku and at the Åbo Akademi University, Turku, Finland, Spring of 2020.
Negotiating skill formation in the Department of Social Security : a case study
Creators: name: Regan, John.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Electronic and magnetic structures and bonding properties of Ce2CrN3 and U2CrN3 from first principles
Creators: name: Matar, Samir F.
name: Kfoury, Charbel N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The electronic and magnetic structures of A2CrN3 (A = Ce, U) ternary compounds calculated based on band magnetism within DFT exhibit different behaviors of the nf elements (n = 4, 5 resp.). Charge analysis allows to formally express the two compounds as A2Cr 5+ N3 5- thus classifying them as covalent nitrides, i.e. far from formal exchange of +- 9 electrons. From establishing the energy-volume equations of state, the two compounds are found with hardness magnitudes: B0(A=Ce) =192 GPa and B0(A=U) = 243 GPa, within range of oxides due to covalent metal-nitrogen bonding shown as based on overlap matrix analysis. The uranium compound is harder due to a smaller volume and less compressible U versus Ce metals. Ce2CrN3 exhibits large magnetization on Cr (1.94BM) and a very small moment develops on cerium (0.14 BM) pointing out to an intermediate valence state while in U2CrN3, M(Cr) = 0.49 BM and M(U) = 0.97BM. These results are stressed by broad band-like density of states (DOS) behavior for A=U and localized DOS for A=Ce. Both compounds are found ferromagnetic in the ground state
description: 17 pages; 3 tables, 5 figs
Regularity of gradient vector fields giving rise to finite Caccioppoli partitions
Creators: name: Moser, Roger
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: For a finite set $A \subseteq \mathbb{R}^n$, consider a function $u \in \mathrm{BV}_{\mathrm{loc}}^2(\mathbb{R}^n)$ such that $\nabla u \in A$ almost everywhere. If $A$ is convex independent, then it follows that $u$ is piecewise affine away from a closed, countably $\mathcal{H}^{n - 1}$-rectifiable set. If $A$ is affinely independent, then $u$ is piecewise affine away from a closed $\mathcal{H}^{n - 1}$-null set.
Refined theoretical values of field and mass isotope shifts in thallium to extract charge radii of Tl isotopes
Creators: name: Penyazkov, Gleb
name: Prosnyak, Sergey D.
name: Barzakh, Anatoly E.
name: Skripnikov, Leonid V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Nuclear Theory (nucl-th)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Electronic factors for the field and mass isotope shifts in the $6p\ ^{2}P_{3/2} \to 7s\ ^{2}S_{1/2}$ (535 nm), $6p\ ^{2}P_{1/2} \to 6d\ ^{2}D_{3/2}$ (277 nm) and $6p\ ^{2}P_{1/2} \to 7s\ ^{2}S_{1/2}$ (378~nm) transitions in the neutral thallium were calculated within the high-order relativistic coupled cluster approach. These factors were used to reinterpret previous experimental isotope shift measurements in terms of charge radii of a wide range of Tl isotopes. Good agreement between theoretical and experimental King-plot parameters was found for the $6p\ ^{2}P_{3/2} \to 7s\ ^{2}S_{1/2}$ and $6p\ ^{2}P_{1/2} \to 6d\ ^{2}D_{3/2}$ transitions. It was shown that the value of the specific mass shift factor for the $6p\ ^{2}P_{3/2} \to 7s\ ^{2}S_{1/2}$ transition is not negligible compared to the value of normal mass shift in contrary to what had been suggested previously. Theoretical uncertainties in mean square charge radii were estimated. They were substantially reduced compared to the previously ascribed ones and amounted to less than 2.6%. The achieved accuracy paves the way to a more reliable comparison of the charge radii trends in the lead region.
Effects of additive noise on the stability of glacial cycles
Creators: name: Mitsui, Takahito
name: Crucifix, Michel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: It is well acknowledged that the sequence of glacial-interglacial cycles is paced by the astronomical forcing. However, how much is the sequence robust against natural fluctuations associated, for example, with the chaotic motions of atmosphere and oceans? In this article, the stability of the glacial-interglacial cycles is investigated on the basis of simple conceptual models. Specifically, we study the influence of additive white Gaussian noise on the sequence of the glacial cycles generated by stochastic versions of several low-order dynamical system models proposed in the literature. In the original deterministic case, the models exhibit different types of attractors: a quasiperiodic attractor, a piecewise continuous attractor, strange nonchaotic attractors, and a chaotic attractor. We show that the combination of the quasiperiodic astronomical forcing and additive fluctuations induce a form of temporarily quantised instability. More precisely, climate trajectories corresponding to different noise realizations generally cluster around a small number of stable or transiently stable trajectories present in the deterministic system. Furthermore, these stochastic trajectories may show sensitive dependence on very small amounts of perturbations at key times. Consistently with the complexity of each attractor, the number of trajectories leaking from the clusters may range from almost zero (the model with a quasiperiodic attractor) to a significant fraction of the total (the model with a chaotic attractor), the models with strange nonchaotic attractors being intermediate. Finally, we discuss the implications of this investigation for research programmes based on numerical simulators. }
description: Parlty based on a lecture given by M. Crucifix at workshop held in Rome in 2013 as a part of Mathematics of Planet Earth 2013
Computing Offloading and Semantic Compression for Intelligent Computing Tasks in MEC Systems
Creators: name: Zheng, Yuanpeng
name: Zhang, Tiankui
name: Huang, Rong
name: Wang, Yapeng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper investigates the intelligent computing task-oriented computing offloading and semantic compression in mobile edge computing (MEC) systems. With the popularity of intelligent applications in various industries, terminals increasingly need to offload intelligent computing tasks with complex demands to MEC servers for computing, which is a great challenge for bandwidth and computing capacity allocation in MEC systems. Considering the accuracy requirement of intelligent computing tasks, we formulate an optimization problem of computing offloading and semantic compression. We jointly optimize the system utility which are represented as computing accuracy and task delay respectively to acquire the optimized system utility. To solve the proposed optimization problem, we decompose it into computing capacity allocation subproblem and compression offloading subproblem and obtain solutions through convex optimization and successive convex approximation. After that, the offloading decisions, computing capacity and compressed ratio are obtained in closed forms. We design the computing offloading and semantic compression algorithm for intelligent computing tasks in MEC systems then. Simulation results represent that our algorithm converges quickly and acquires better performance and resource utilization efficiency through the trend with total number of users and computing capacity compared with benchmarks.
Pneumatic Computers for Embedded Control of Microfluidics
Creators: name: Ahrar, Siavash
name: Raje, Manasi
name: Lee, Irene C.
name: Hui, Elliot E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Emerging Technologies (cs.ET)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Alternative computing approaches that interface readily with physical systems are well suited for embedded control of those systems. We demonstrate finite state machines implemented as pneumatic circuits of microfluidic valves, and we employ these controllers to direct microfluidic liquid handling procedures such as serial dilution on the same chip. These monolithic integrated systems require only power to be supplied externally, in the form of a vacuum source. User input can be provided directly to the chip by covering pneumatic ports with a finger. State machines with up to four bits of state memory are demonstrated, and next-state combinational logic can be fully reprogrammed by changing the hole-punch pattern on a membrane in the chip. These pneumatic computers demonstrate a new framework for the embedded control of physical systems.
description: 12 pages, 5 figures, 4 videos
Chiral extrapolation of nucleon axial charge $g_A$ in effective field theory
Creators: name: Li, Hongna
name: Wang, Ping
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The extrapolation of nucleon axial charge $g_A$ is investigated within the framework of heavy baryon chiral effective field theory. The intermediate octet and decuplet baryons are included in the one loop calculation. Finite range regularization is applied to improve the convergence in the quark-mass expansion. The lattice data from three different groups are used for the extrapolation. At physical pion mass, the extrapolated $g_A$ are all smaller than the experimental value.
description: 5 pages, 5 figures
Entanglement-Assisted Quantum Error-Correcting Codes
Creators: name: Brun, Todd
name: Hsieh, Min-Hsiu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide a self-contained introduction for entanglement-assisted quantum error-correcting codes in this book chapter.
description: This is a chapter in the book "Quantum Error Correction", edited by Daniel A. Lidar and Todd A. Brun, (Cambridge University Press, 2013)
Personnel management in the Royal Australian Navy within the context of program management and budgeting
Creators: name: Gates, Raydon.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Multiplexed random-access optical memory in warm cesium vapor
Creators: name: Meßner, Leon
name: Robertson, Elizabeth
name: Esguerra, Luisa
name: Lüdge, Kathy
name: Wolters, Janik
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The ability to store large amounts of photonic quantum states is regarded as substantial for future optical quantum computation and communication technologies. However, research for multiplexed quantum memories has been focused on systems that show good performance only after an elaborate preparation of the storage media. This makes it generally more difficult to apply outside a laboratory environment. In this work, we demonstrate a multiplexed random-access memory to store up to four optical pulses using electromagnetically induced transparency in warm cesium vapor. Using a Λ-System on the hyperfine transitions of the Cs D1 line, we achieve a mean internal storage efficiency of 36% and a 1/e lifetime of 3.2 μs. In combination with future improvements, this work facilitates the implementation of multiplexed memories in future quantum communication and computation infrastructures.
description: 6 pages, 5 figures
Dynamic Multi-time Scale User Admission and Resource Allocation for Semantic Extraction in MEC Systems
Creators: name: Zheng, Yuanpeng
name: Zhang, Tiankui
name: Loo, Jonathan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper investigates the semantic extraction task-oriented dynamic multi-time scale user admission and resourceallocation in mobile edge computing (MEC) systems. Amid prevalence artifi cial intelligence applications in various industries,the offloading of semantic extraction tasks which are mainlycomposed of convolutional neural networks of computer vision isa great challenge for communication bandwidth and computing capacity allocation in MEC systems. Considering the stochasticnature of the semantic extraction tasks, we formulate a stochastic optimization problem by modeling it as the dynamic arrival of tasks in the temporal domain. We jointly optimize the system revenue and cost which are represented as user admission in the long term and resource allocation in the short term respectively. To handle the proposed stochastic optimization problem, we decompose it into short-time-scale subproblems and a long-time-scale subproblem by using the Lyapunov optimization technique. After that, the short-time-scale optimization variables of resource allocation, including user association, bandwidth allocation, and computing capacity allocation are obtained in closed form. The user admission optimization on long-time scales is solved by a heuristic iteration method. Then, the multi-time scale user admission and resource allocation algorithm is proposed for dynamic semantic extraction task computing in MEC systems. Simulation results demonstrate that, compared with the benchmarks, the proposed algorithm improves the performance of user admission and resource allocation efficiently and achieves a flexible trade-off between system revenue and cost at multi-time scales and considering semantic extraction tasks.
Enhancing interfacial magnetization with a ferroelectric
Creators: name: Meyer, Tricia L.
name: Herklotz, 1 Andreas
name: Lauter, Valeria
name: Freeland, John W.
name: Nichols, John
name: Guo, Er-Jia
name: Lee, Shinbuhm
name: Ward, T. Zac
name: Balke, Nina
name: Kalinin, Sergei V.
name: Fitzsimmons, Michael R.
name: Lee, Ho Nyung
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Ferroelectric control of interfacial magnetism has attracted much attention. However, the coupling of these two functionalities has not been understood well at the atomic scale. The lack of scientific progress is mainly due to the limited characterization methods by which the interface's magnetic properties can be probed at an atomic level. Here, we use polarized neutron reflectometry (PNR) to probe the evolution of the magnetic moment at interfaces in ferroelectric/strongly correlated oxide [PbZr0.2Ti0.8O3/La0.8Sr0.2MnO3 (PZT/LSMO)] heterostructures. We find that there is always suppressed magnetization at the surface and interface of LSMO and such magnetic deterioration can be strongly improved by interfacing with a strongly polar PZT film. The magnetoelectric coupling of magnetism and ferroelectric polarization occurs within a couple of nanometers of the interface as demonstrated by the enhanced interfacial magnetization beyond the bulk value by 5% depending on the polarization of PZT. The latter value is 70% higher than the surface magnetization of a LSMO film without interfacing with a ferroelectric layer. These compelling results not only probe the presence of nanoscale magnetic suppression and its control by ferroelectrics, but also emphasize the importance of utilizing probing techniques that can distinguish between bulk and interfacial phenomena.
title: THE ROLE OF TGFΒ1 IN ORAL CANCER CELL MIGRATION VIA ACTIVATING SMAD AND NON-SMAD SIGNALLING PATHWAYS
titleType: Other
Creators: name: Shalgm, Basher Edress M.
Publisher: name: University of Dundee
Year: 2023

description: Introduction: In general, a malignant tumour formed from the oral mucosal epithelium is referred to as oral cancer. Squamous cell carcinoma has been identified in more than 90% of cases of oral cancer. Transforming growth factor beta (TGFβ) participates in a variety of biological processes, including cellular differentiation, organogenesis and halting the growth of tumours. However, tumour cells use TGFβ signalling systems to their advantage to develop new features, such as the capacity for metastasis and invasion. The term "epithelial to mesenchymal transition" (EMT) describes a biological process in which an epithelial cell undergoes modifications that cause it to have a mesenchymal cell phenotype, such as the capacity to migrate and invade, resist apoptosis, and produce extracellular matrix components.

Aims: This study sought to determine whether TGFβ-1 contributed to the ability of oral cancer cell lines to migrate or not by triggering Smad or non-Smad signalling pathways. Additionally, the investigation included the mechanism of how TGFβ1 controls the migration of oral cancer cell lines via EMT.

Materials: In this project, three cell lines, HaCaT developed from adult human skin keratinocytes, TYS developed from oral adeno-squamous cell carcinoma of the minor salivary gland and SAS-H1 obtained from a poorly differentiated squamous cell carcinoma from human tongue, were utilised. TGFβ-1, epidermal growth factor (EGF), and several signalling pathway inhibitors, including TGFβ- RI Kinase Inhibitor VII, MK-2206, PD98059, and SB431542, were used as test conditions.

Methods: The behaviour and features of the cell lines under test conditions were evaluated using three types of migration assay (the Scatter assay, Gap closure assay and Scratch assay). Western blotting was used to assess the expression of various cell signalling molecules such as Smad, Akt, Erk/MAPK and Rac1/Cdc42. Additionally, to evaluate the expression and localisation of migratory markers including E-cadherin and N-cadherin, immunocytochemistry and western blotting were used.

Results: Both normal and oral cancer cell lines exhibited both individual and collective cell migration triggered by TGFβ-1. Cell adhesion was broken down when TGFβ-1 caused the re-localisation of E-cadherin and β-catenin molecules from the cell membrane to the cytoplasm. N-cadherin, a mesenchymal marker, was increased by TGFβ-1 in both normal and oral cancer cell lines.

Conclusion: TGFβ1 induces migration of oral cancer cell lines via EMT. TGFβ1 regulates cell migration by Smad, PI3K/Akt and Erk/MAPK signalling pathways in normal and oral cancer cell lines.
Students' perspectives on computational challenges in physics class
Creators: name: Hamerski, Patti
name: McPadden, Daryl
name: Caballero, Marcos D.
name: Irving, Paul W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: High school science classrooms across the United States are answering calls to make computation a part of science learning. The problem is that there is little known about the barriers to learning that computation might bring to a science classroom or about how to help students overcome these challenges. This case study explores these challenges from the perspectives of students in a high school physics classroom with a newly revamped, computation-integrated curriculum. Focusing mainly on interviews to center the perspectives of students, we found that computation is a double-edged sword: It can make science learning more authentic for students who are familiar with it, but it can also generate frustration and an aversion towards physics for students who are not.
description: 27 pages, 2 figures. Published in Physical Review Physics Education Research
patRoon 1.0.0 manuals
Creators: name: Helmus, Rick
Publisher: name: Zenodo
Year: 2020
Subjects: mass spectrometry
non-target screening

description: These are the manuals for patRoon 1.0 in both PDF and HTML format. The HTML handbook can be viewed by opening HTML/handbook/index.html. For more information see https://github.com/rickhelmus/patRoon.
On the detection of the electromagnetic counterparts from lensed gravitational wave events by binary neutron star mergers
Creators: name: Ma, Hao
name: Lu, Youjun
name: Guo, Xiao
name: Zhang, Siqi
name: Chu, Qingbo
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Future ground-based gravitational wave (GW) detectors, i.e., Einstein telescope (ET) and Cosmic Explorer (CE), are expected to detect a significant number of lensed binary neutron star (BNS) mergers, which may provide a unique tool to probe cosmology. In this paper, we investigate the detectability of the optical/infrared electromagnetic (EM) counterparts (kilonovae/afterglows) from these lensed BNS mergers by future GW detectors and EM telescopes using simple kilonova, afterglow, and lens models. ET and CE are expected to detect $\sim5.32^{+26.1}_{-5.10}$ and $67.3^{+332}_{-64.7}$ lensed BNS mergers per year. We find that the EM counterparts associated with all these mergers will be detectable by an all sky-survey in the H-band with the limiting magnitude $m_{\textrm{lim}}\gtrsim27$, while the detectable fraction is $\lesssim0.4\%$ in the g-/z-band if with $m_{\textrm{lim}}\lesssim24$. Generally it is more efficient to search the lensed EM counterparts by adopting the infrared bands than the optical/UV bands with the same $m_{\textrm{lim}}$. Future telescopes like Vera C. Rubin Observatory, China Space Station Telescope, and Euclid can hardly detect the EM counterparts of even one lensed BNS merger. Roman Space Telescope (RST) and James Webb Space Telescope (JWST) have the capability to detect about a few or more such events per year. Moreover, the time delays and separations between the lensed image pairs are typically in the ranges from minutes to months and from $0.1$ to $1$\,arcsec, suggesting that both the GW and EM images of most lensed BNS mergers can be well resolved by not only CE/ET in the time domain but also RST/JWST spatially.
description: 16 pages, 10 figures, MNRAS in press
Dynamics of dust grains in turbulent molecular clouds. Conditions for decoupling and limits of different numerical implementations
Creators: name: Commerçon, Benoît
name: Lebreuilly, Ugo
name: Price, Daniel J.
name: Lovascio, Francesco
name: Laibe, Guillaume
name: Hennebelle, Patrick
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Dust grain dynamics in molecular clouds is regulated by its interplay with supersonic turbulent gas motions. The conditions under which dust grains decouple from the dynamics of gas remain poorly constrained. We first aim to investigate the critical dust grain size for dynamical decoupling, using both analytical predictions and numerical experiments. Second, we aim to set the range of validity of two fundamentally different numerical implementations for the evolution of dust and gas mixtures in turbulent molecular clouds. We carried out a suite of numerical experiments using two different schemes. First, we used a monofluid formalism in the terminal velocity approximation (TVA) on a Eulerian grid. Second, we used a two-fluid scheme, in which the dust dynamics is handled with Lagrangian super-particles, and the gas dynamics on a Eulerian grid. The monofluid results are in good agreement with the theoretical critical size for decoupling. We report dust dynamics decoupling for Stokes number St>0.1, that is, dust grains of $s>4~μ$m in size. We find that the TVA is well suited for grain sizes of 10 $μ$m in molecular clouds, in particular in the densest regions. However, the maximum dust enrichment measured in the low-density material where St>1 is questionable. In the Lagrangian dust experiments, we show that the results are affected by the numerics for all dust grain sizes. At St<<1, the dust dynamics is largely affected by artificial trapping in the high-density regions, leading to spurious variations of the dust concentration. At St>1, the maximum dust enrichment is regulated by the grid resolution used for the gas dynamics. The results of previous similar numerical work should therefore be revisited with respect to the limitations we highlight in this study. Dust enrichment of submicron dust grains is unlikely to occur in the densest parts of molecular clouds.
description: 22 pages, 16 figures, accepted for publication in A&A
Knowledge Graph Self-Supervised Rationalization for Recommendation
Creators: name: Yang, Yuhao
name: Huang, Chao
name: Xia, Lianghao
name: Huang, Chunzhen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In this paper, we introduce a new self-supervised rationalization method, called KGRec, for knowledge-aware recommender systems. To effectively identify informative knowledge connections, we propose an attentive knowledge rationalization mechanism that generates rational scores for knowledge triplets. With these scores, KGRec integrates generative and contrastive self-supervised tasks for recommendation through rational masking. To highlight rationales in the knowledge graph, we design a novel generative task in the form of masking-reconstructing. By masking important knowledge with high rational scores, KGRec is trained to rebuild and highlight useful knowledge connections that serve as rationales. To further rationalize the effect of collaborative interactions on knowledge graph learning, we introduce a contrastive learning task that aligns signals from knowledge and user-item interaction views. To ensure noise-resistant contrasting, potential noisy edges in both graphs judged by the rational scores are masked. Extensive experiments on three real-world datasets demonstrate that KGRec outperforms state-of-the-art methods. We also provide the implementation codes for our approach at https://github.com/HKUDS/KGRec.
description: Accepted by KDD'23
On the constituent counting rules for hard exclusive processes involving multiquark states
Creators: name: Guo, Feng-Kun
name: Meißner, Ulf-G.
name: Wang, Wei
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: At high energies, the cross section of a hard exclusive process at finite scattering angle falls off as a negative power of the center-of-mass energy $\sqrt{s}$. If all involved quark-gluon compositions undergo hard momentum transfers, the scaling of the fall-off is determined by the underlying valence structures of the initial and final states, known as the constituent counting rules. It was argued in the literature that the counting rules are a powerful tool to determine the valence degrees of freedom inside multiquark states when applied to exclusive production processes. However, we demonstrate that for hadrons with hidden flavors the naive application of the constituent counting rules is problematic, since it is not mandatory for all components to participate the hard scattering at the scale $\sqrt{s}$. The correct scaling rules can be obtained easily by using effective field theory. A few examples involving the $Z_c(3900)^\pm$ and $X(3872)$ are discussed.
description: 10 pages, 3 figures
VLT/SPHERE robust astrometry of the HR8799 planets at milliarcsecond-level accuracy Orbital architecture analysis with PyAstrOFit
Creators: name: Wertz, Olivier
name: Absil, Olivier
name: González, Carlos. A. Gómez
name: Milli, Julien
name: Girard, Julen. H.
name: Mawet, Dimitri
name: Pueyo, Laurent
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: HR8799 is orbited by at least four giant planets, making it a prime target for the recently commissioned Spectro-Polarimetric High-contrast Exoplanet REsearch (VLT/SPHERE). As such, it was observed on five consecutive nights during the SPHERE science verification in December 2014. We aim to take full advantage of the SPHERE capabilities to derive accurate astrometric measurements based on H-band images acquired with the Infra-Red Dual-band Imaging and Spectroscopy (IRDIS) subsystem, and to explore the ultimate astrometric performance of SPHERE in this observing mode. We also aim to present a detailed analysis of the orbital parameters for the four planets. We report the astrometric positions for epoch 2014.93 with an accuracy down to 2.0 mas, mainly limited by the astrometric calibration of IRDIS. For each planet, we derive the posterior probability density functions for the six Keplerian elements and identify sets of highly probable orbits. For planet d, there is clear evidence for nonzero eccentricity ($e \simeq 0.35$), without completely excluding solutions with smaller eccentricities. The three other planets are consistent with circular orbits, although their probability distributions spread beyond $e = 0.2$, and show a peak at $e \simeq 0.1$ for planet e. The four planets have consistent inclinations of about $30°$ with respect to the sky plane, but the confidence intervals for the longitude of ascending node are disjoint for planets b and c, and we find tentative evidence for non-coplanarity between planets b and c at the $2 σ$ level.
description: 23 pages, 14 figures
Spherical cap discrepancy of perturbed lattices under the Lambert projection
Creators: name: Ferizović, Damir
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 11K38, 52C99, 52A10

description: Given any full rank lattice and a natural number N , we regard the point set given by the scaled lattice intersected with the unit square under the Lambert map to the unit sphere, and show that its spherical cap discrepancy is at most of order N , with leading coefficient given explicitly and depending on the lattice only. The proof is established using a lemma that bounds the amount of intersections of certain curves with fundamental domains that tile R^2 , and even allows for local perturbations of the lattice without affecting the bound, proving to be stable for numerical applications. A special case yields the smallest constant for the leading term of the cap discrepancy for deterministic algorithms up to date.
description: A new constant M^Q(K) needed to be added to the main theorem and Section 3 has been extended by an algorithm. The proof of Theorem 1 was adjusted to incorporate the value M^Q(K). All proofs have been streamlined and arguments better presented. Many typos have been corrected and a reference to directional discrepancy was added
Factorization Breaking of $A^T_d$ for polarized deuteron targets in a relativistic framework
Creators: name: Jeschonnek, Sabine
name: Van Orden, J. W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the possible factorization of the tensor asymmetry $A^T_d$ measured for polarized deuteron targets within a relativistic framework. We define a reduced asymmetry and find that factorization holds only in plane wave impulse approximation and if p-waves are neglected. Our numerical results show a strong factorization breaking once final state interactions are included. We also compare the d-wave content of the wave functions with the size of the factored, reduced asymmetry and find that there is no systematic relationship of this quantity to the d-wave probability of the various wave functions.
A note on affine cones over Grassmannians and their stringy $E$-functions
Creators: name: De Deyn, Timothy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14A22, 16E40

description: We compute the stringy $E$-function of the affine cone over a Grassmannian. If the Grassmannian is not a projective space then its cone does not admit a crepant resolution. Nonetheless the stringy $E$-function is sometimes a polynomial and in those cases the cone admits a noncommutative crepant resolution. This raises the question as to whether the existence of a noncommutative crepant resolution implies that the stringy $E$-function is a polynomial.
description: v2: final version, incorporated suggestions of the referee. To appear in Proc. Amerc. Math. Soc
Structured superhydrophilic coatings made from aminomalononitrile
Creators: name: Toh, Rou Jun
name: Evans, Richard
name: Voelcker, Nicolas H.
name: D’ischia, Marco
name: Ball, Vincent
Publisher: name: Nanomaterials Science & Engineering
Year: 2020

description: The motivation for new versatile and biocompatible coatings incites researchers to try to copy solutions developed by living organisms like mussels able to adhere to all kinds of substrates in wet conditions. Another source of inspiration may be found in molecules containing reactive CN groups which have been formed in prebiotic conditions on the early formed Earth. Among such molecules, aminomalonitrile (AMN) has been shown to allow the formation of coatings on all kinds of known materials. In the present investigation, the deposition mechanism of AMN based coatings on silicon, quartz and glass is investigated. It is shown that the film deposition is preceded by a lag phase during which AMN undergoes already a transformation in solution. The obtained coatings undergo a morphological transition from islands to fibrillar structures with a concomitant change in composition and hydrophilicity. A putative structure based on X-ray photoelectron spectroscopy data is proposed for the AMN based films deposited at the solid-water interface.
description: Nanomaterials Science & Engineering, vol. 2 n.º 2 (2020): Nanomaterials Science & Engineering
Space environment and magnetospheric Poynting fluxes of the exoplanet $τ$ Boötis b
Creators: name: Elekes, F.
name: Saur, J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: The first tentative detection of a magnetic field on the Hot Jupiter type exoplanet $τ$ Boötis b was recently reported by Turner et al. (2021). The magnetic field was inferred from observations of circularly-polarized radio emission obtained with the LOFAR telescopes. The radio emission is possibly a consequence of the interaction of the surrounding stellar wind with the planet's magnetic field. Methods: We perform magnetohydrodynamic simulations of the space environment around $τ$ Boötis b and its interaction with the stellar wind using the PLUTO code. We study the magnetospheric energy fluxes and effects of different magnetic field orientations in order to understand the physical processes which cause energy fluxes leading to the observed radio emission given the proposed magnetic field strength in Turner et al. (2021). Furthermore we study the effect of stellar wind density and pressure on magnetospheric energy fluxes given the uncertainty of extrasolar stellar wind predictions. Results: We find in our simulations that the interaction is most likely super--Alfvénic and energy fluxes generated by the stellar wind--planet interaction are consistent with the observed radio powers. Magnetospheric Poynting fluxes are of the order of 1-8 $\times10^{18}$ W for open, semi-open and closed magnetospheres. The Poynting fluxes are energetically consistent with the radio powers in Turner et al. (2021) for a magnetospheric Poynting flux-to-radio efficiency $> 10^{-3}$ when the magnetic fields of the planet and star are aligned. In case of lower efficiency factors the magnetospheric emission scenario is according to the parameter space modeled in this study not powerful enough. In case of a magnetic polarity reversal of the host star towards an anti-aligned field configuration, expected radio powers in the magnetospheric emission scenario fall below the observable threshold.
description: Accepted for publication in Astronomy and Astrophysics (08.01.2023)
Reassessing the potential of TlCl for laser cooling experiments via four-component correlated electronic structure calculations
Creators: name: Yuan, Xiang
name: Gomes, André Severo Pereira
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The TlCl molecule has previously been investigated theoretically and proposed as promising candidates for laser cooling searches [X. Yuan et. al. J. Chem. Phys., 149, 094306, 2018]. From these results, the cooling process, which would proceed by transitions between a\sup{3}Π\sup{+}\sub{0} and X\sup{1}Σ\sup{+}\sub{0} states, had as potential bottleneck the long lifetime (6.04 μs) of the excited state a\sup{3}Π\sup{+}\sub{0} , that would prohibit experimentally control the slowing region. Here, we revisit this system by employing four-component Multireference Configuration Interaction (MRCI) calculations, and investigate the effect of such approaches on the calculated transition moments between a\sup{3}Π\sup{+}\sub{0} and a\sup{3}Π\sub{1} excited states of TlCl as well as TlF, the latter serving as a benchmark between theory and experiment. Wherever possible, MRCI results have been cross-validated by, and turned out to be consistent with, four-component equation of motion coupled-cluster (EOM-CC) and polarization propagator (PP) calculations. We find that the results of TlF are very closed to experiment values, while for TlCl the lifetime of the a3Π+0 state is now estimated to be 175 ns, which is much shorter than previous calculations indicated, thus yielding a different, more favorable cooling dynamics. By solving the rate-equation numerically, we provide evidence that TlCl could have cooling properties similar to those of TlF. Our investigations also point to the potential benefits of enhancing the stimulated radiation in optical cycle to improve cooling efficiency.
The investigation and development of strategies for the improvement of quality in decision making in the Department of Social Security
Creators: name: Schell, A. J.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Cluster-permutohedra and submanifolds of flag varieties with torus actions
Creators: name: Ayzenberg, Anton
name: Buchstaber, Victor
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 57S12, 14M15, 05E10, 05E18, 06A15 (Primary) 05B35, 55R20, 55T10, 20B35, 06A07, 57S15, 05C15 (Secondary)

description: In this paper we describe a relation between the notion of graphicahedron, introduced by Araujo-Pardo, Del R\'ıo-Francos, López-Dudet, Oliveros, and Schulte in 2010, and toric topology of manifolds of sparse isospectral Hermitian matrices. More precisely, we recall the notion of a cluster-permutohedron, a certain finite poset defined for a simple graph $Γ$. This poset is build as a combination of cosets of the symmetric group, and the geometric lattice of the graphical matroid of $Γ$. This poset is similar to the graphicahedron of $Γ$, in particular, 1-skeleta of both posets are isomorphic to Cayley graphs of the symmetric group. We describe the relation between cluster-permutohedron and graphicahedron using Galois connection and the notion of a core of a finite topology. We further prove that the face poset of the natural torus action on the manifold of isospectral $Γ$-shaped Hermitian matrices is isomorphic to the cluster-permutohedron. Using recent results in toric topology, we show that homotopy properties of graphicahedra may serve an obstruction to equivariant formality of isospectral matrix manifolds. We introduce a generalization of a cluster-permutohedron and describe the combinatorial structure of a large family of manifolds with torus actions, including Grassmann manifolds and partial flag manifolds.
description: 28 pages, 2 figures
Die Meschenrechte zwischen Emazipationsforderrungen und Herrshaftslogik.
Creators: name: Meccarrelli Massimo Paolo Palchetti Carlo Sotis
Publisher: name: Zenodo
Year: 2018
Subjects: Menshenrechte

description: MECCARELLI P, PALCHETTI P, SOTIS C (2018). Die Meschenrechte zwischen Emazipationsforderrungen und Herrshaftslogik. In: (a cura di): MECCARELLI P, PALCHETTI P, SOTIS C, Die Schattenseite der Menshenrechte. vol. 17, p. 1-20, berlino:Lir Verlag, ISBN: 9783643802804
Stability estimates for a Magnetic Schrodinger operator with partial data
Creators: name: Potenciano-Machado, Leyter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper we study local stability estimates for a magnetic Schrödinger operator with partial data on an open bounded set in dimension $n\geq 3$. This is the corresponding stability estimates for the identifiability result obtained by Bukgheim and Uhlmann $[2]$ in the presence of magnetic field and when the measurements for the Dirichlet-Neumann map are taken on a neighborhood of the illuminated region of the boundary for functions supported on a neighborhood of the shadow region. We obtain $\log$-type estimates.
description: 35 pages
Observability of silicates in volatile atmospheres of super-Earths and sub-Neptunes
Creators: name: Zilinskas, Mantas
name: Miguel, Yamila
name: van Buchem, Chritstiaan P. A.
name: Snellen, Ignas A. G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Many of the confirmed short period super-Earths and smaller sub-Neptunes are sufficiently irradiated for the surface silicates to be sustained in a long-lasting molten state. While there is no direct evidence of magma ocean influence on exoplanets, theory suggests that due to outgassing and diverse evolution paths, a wide range of resulting atmospheric compositions should be possible. Atmospheric contamination caused by the outgassing of the underlying magma ocean is potentially detectable using low resolution spectroscopy. The James Webb Space Telescope provides the necessary spectral coverage and sensitivity to characterise smaller planets, including lava worlds. In this light, we assess observability of outgassed silicates submerged in volatile atmospheres on the edge of the evaporation valley. By placing a hypothetical 2 R${_\oplus}$ planet around a Sun-like star, we self-consistently model, in 1-D, a wide range of potential atmospheric compositions, including thermal structure and outgassing. We focus on atmospheres rich in H, C and N. We assess diverse chemistry of silicates and volatiles, and what features of outgassed species could be detected via emission spectroscopy using MIRI LRS. Results indicate that even for substantial volatile envelopes, strong in infrared opacity, the presence of silicates causes deep thermal inversions, affecting emission. Similar to pure lava worlds, SiO remains the only outgassed species with major infrared, 5 and 9 \textmu m, bands. However, even a small amount of volatiles, especially of H2O and H-, may hinder its observability. We also find that the C/O ratio plays a large role in determining the abundance of SiO. Detecting SiO on a strongly irradiated planet could indicate an atmosphere with high metallicity and a low C/O ratio, which may be a result of efficient interaction between the atmosphere and the underlying melt.
description: Accepted for publication at Astronomy & Astrophysics
On the conditions of validity of the Boltzmann equation and Boltzmann H-theorem
Creators: name: Tessarotto, Massimo
name: Cremaschini, Claudio
name: Tessarotto, Marco
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper the problem is posed of the formulation of the so-called "ab initio" approach to the statistical description of the Boltzmann-Sinai N-body classical dynamical system (CDS) formed by identical smooth hard spheres. This amounts to introducing a suitably-generalized version of the axioms of Classical Statistical Mechanics. The latter involve a proper definition of the functional setting for the N-body probability density function (PDF), so that it includes also the case of the deterministic N-body PDF. In connection with this issue, a further development concerns the introduction of modified collision boundary conditions which differ from the usual ones adopted in previous literature. Both features are proved to be consistent with the validity of exact H-theorems for the N-body and 1-body PDFs respectively. Consequences of the axiomatic approach which concern the conditions of validity of the Boltzmann kinetic equation and the Boltzmann H-theorem are investigated. In particular, the role of the modified boundary conditions is discussed. It is shown that both theorems fail in the case in which the N-body PDF is identified with the deterministic PDF. Finally, the issue of applicability of the Zermelo and Loschmidt paradoxes to the "ab initio" approach presented here is discussed.
description: 23 pages