cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The $\sin2ϕ_h$ azimuthal asymmetry of pion production in SIDIS within TMD factorization
Creators: name: Li, Hui
name: Lu, Zhun
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the $\sin2ϕ_h$ azimuthal asymmetry of charged and neutral pion productions off the longitudinally polarized nucleon targets in semi-inclusive deeply inelastic scattering (SIDIS) process within the transverse momentum dependent~(TMD) factorization. The asymmetry is contributed by the convolution of the TMD distribution $h_{1L}^{\perp}$ and the Collins fragmentation function $H_{1}^\perp$. We adopt the Wandzura-Wilczek-type~(WW-type) approximation for $h_{1L}^{\perp}$ and two different parametrizations on the nonperturbative part of TMD evolution for $h_{1L}^{\perp}$ and $H_{1}^\perp$. We numerically estimate the asymmetry in the kinematical configurations available at HERMES, CLAS and CLAS12. It is shown that our theoretical calculation can describe the HERMES and CLAS data, except the asymmetry of the $π^-$ production off proton target at HERMES and CLAS. We also find that different choices of the nonperturbative part of TMD evolution lead qualitatively similar results.
description: 14 pages, 6 figures. arXiv admin note: substantial text overlap with arXiv:2104.12155
Electromagnetic Signatures of Neutron Star Mergers in the Advanced LIGO Era
Creators: name: Fernández, Rodrigo
name: Metzger, Brian D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The mergers of binaries containing neutron stars and stellar-mass black holes are the most promising sources for direct detection in gravitational waves by the interferometers Advanced LIGO and Virgo over the next few years. The concurrent detection of electromagnetic emission from these events would greatly enhance the scientific return of these discoveries. Here we review the state of the art in modeling the electromagnetic signal of neutron star binary mergers across different phases of the merger and multiple wavelengths. We focus on those observables which provide the most sensitive diagnostics of the merger physics and the contribution to the synthesis of rapid neutron capture ($r$-process) elements in the Galaxy. We also outline expected future developments on the observational and theoretical sides of this rapidly evolving field.
description: To appear in Annual Review of Nuclear and Particle Science volume 66. Non-copyedited version prepared by the authors. Comments welcome (note that we have reached our upper limit of 150 references)
Quantum-assisted Distortion-free audio signal sensing
Creators: name: Zhang, Chen
name: Dasari, Durga
name: Widmann, Matthias
name: Meinel, Jonas
name: Vorobyov, Vadim
name: Kapitanova, Polina
name: Nenasheva, Elizaveta
name: Nakamura, Kazuo
name: Sumiya, Hitoshi
name: Onoda, Shinobu
name: Isoya, Junichi
name: Wrachtrup, Jörg
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Quantum sensors are keeping the cutting-edge sensitivities in metrology. However, for high-sensitive measurements of arbitrary signals, limitations in linear dynamic range could introduce distortions when sensing the frequency, magnitude and phase of unknown signals. Here, we overcome these limitations with advanced sensing protocol that combines quantum phase-sensitive detection with heterodyne readout. We present theoretical and experimental investigations using nitrogen-vacancy centers in diamond, showing the ability to sense radio signals with a 98 dB linear dynamic range, a 31 pT/Hz$^{1/2}$ sensitivity, and arbitrary frequency resolution. Further, we perform the quantum-assisted distortion-free audio signal (melody, speech) sensing with high fidelity. The methods developed here could broaden the horizon for quantum sensors towards applications in telecommunication, where high-fidelity and low-distortion at multiple frequency bands within small sensing volumes are required.
description: 30 pages, 7 figures
Adaptive Filter for Automatic Identification of Multiple Faults in a Noisy OTDR Profile
Creators: name: von der Weid, Jean Pierre
name: Souto, Mario H.
name: Garcia, Joaquim D.
name: Amaral, Gustavo C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Applications (stat.AP)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We present a novel methodology able to distinguish meaningful level shifts from typical signal fluctuations. A two-stage regularization filtering can accurately identify the location of the significant level-shifts with an efficient parameter-free algorithm. The developed methodology demands low computational effort and can easily be embedded in a dedicated processing unit. Our case studies compare the new methodology with current available ones and show that it is the most adequate technique for fast detection of multiple unknown level-shifts in a noisy OTDR profile.
description: 15 pages, 4 figures
Composition and Style Attributes Guided Image Aesthetic Assessment
Creators: name: Celona, Luigi
name: Leonardi, Marco
name: Napoletano, Paolo
name: Rozza, Alessandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The aesthetic quality of an image is defined as the measure or appreciation of the beauty of an image. Aesthetics is inherently a subjective property but there are certain factors that influence it such as, the semantic content of the image, the attributes describing the artistic aspect, the photographic setup used for the shot, etc. In this paper we propose a method for the automatic prediction of the aesthetics of an image that is based on the analysis of the semantic content, the artistic style and the composition of the image. The proposed network includes: a pre-trained network for semantic features extraction (the Backbone); a Multi Layer Perceptron (MLP) network that relies on the Backbone features for the prediction of image attributes (the AttributeNet); a self-adaptive Hypernetwork that exploits the attributes prior encoded into the embedding generated by the AttributeNet to predict the parameters of the target network dedicated to aesthetic estimation (the AestheticNet). Given an image, the proposed multi-network is able to predict: style and composition attributes, and aesthetic score distribution. Results on three benchmark datasets demonstrate the effectiveness of the proposed method, while the ablation study gives a better understanding of the proposed network.
Effects of pregnane steroids on behavioural parameters and evoked responses in the fetal sheep
Creators: name: Nicol., Marcus Benjamin
Publisher: name: Monash University
Year: 2021

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.
title: Simulating Function Generators and Oscilloscopes in a Virtual Laboratory Environment
Creators: name: Li, Yiyang
name: Shen, Yuzhong
name: Sukenik, Charles I.
Publisher: name: Old Dominion University Libraries
Year: 2023

description: This paper discusses the development of a virtual laboratory for simulating electronic instruments commonly used in science and engineering courses, such as function generators and digital storage oscilloscopes. Mathematical equations are used to represent continuous signals and ensure signal integrity, while C# delegates are adopted to enable communication between simulated devices. The approach allows for loose coupling between software components and high cohesion of individual components, and can be applied to other virtual laboratory developments. The virtual laboratory provides a means for students to gain hands-on experience with electronic instruments and improve their understanding of theoretical concepts.
Definition and evaluation of a finite element model of the human heel for diabetic foot ulcer prevention under shearing loads
Creators: name: Trebbi, Alessio
name: Fougeron, Nolwenn
name: Payan, Yohan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Diabetic foot ulcers are triggered by mechanical loadings applied to the surface of the plantar skin. Strain is considered to play a crucial role in relation to ulcer etiology and can be assessed by Finite Element (FE) modelling. A difficulty in the generation of these models is the choice of the soft tissue material properties. In the literature, many studies attempt to model the behavior of the heel soft tissues by implementing constitutive laws that can differ significantly in terms of mechanical response. Moreover, current FE models lack of proper evaluation techniques that could estimate their ability to simulate realistic strains. In this article, we propose and evaluate a FE model of the human heel for diabetic foot ulcer prevention. Soft tissue constitutive laws are defined through the fitting of experimental stretch-stress curves published in the literature. The model is then evaluated through Digital Volume Correlation (DVC) based on non-rigid 3D Magnetic Resonance Image Registration. The results from FE analysis and DVC show similar strain locations in the fat pad and strain intensities according to the type of applied loads. For additional comparisons, different sets of constitutive models published in the literature are applied into the proposed FE mesh and simulated with the same boundary conditions. In this case, the results in terms of strains show great diversity in locations and intensities, suggesting that more research should be developed to gain insight into the mechanical properties of these tissues.
Photoionization of Co$^{+}$ and electron-impact excitation of Co$^{2+}$ using the Dirac R-matrix method
Creators: name: Tyndall, N. B.
name: Ramsbottom, C. A.
name: Ballance, C. P.
name: Hibbert, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Modelling of massive stars and supernovae (SNe) plays a crucial role in understanding galaxies. From this modelling we can derive fundamental constraints on stellar evolution, mass-loss processes, mixing, and the products of nucleosynthesis. Proper account must be taken of all important processes that populate and depopulate the levels (collisional excitation, de-excitation, ionization, recombination, photoionization, bound-bound processes). For the analysis of Type Ia SNe and core collapse SNe (Types Ib, Ic and II) Fe group elements are particularly important. Unfortunately little data is currently available and most noticeably absent are the photoionization cross-sections for the Fe-peaks which have high abundances in SNe. Important interactions for both photoionization and electron-impact excitation are calculated using the relativistic Dirac Atomic $R$-matrix Codes (DARC) for low ionization stages of cobalt. All results are calculated up to photon energies of 45 eV and electron energies up to 20 eV. The wavefunction representation of Co III has been generated using GRASP0 by including the dominant 3d$^7$, 3d$^6$[4s, 4p], 3p$^4$3d$^9$ and 3p$^6$3d$^9$ configurations, resulting in 292 fine structure levels. Electron-impact collision strengths and Maxwellian averaged effective collision strengths across a wide range of astrophysically relevant temperatures are computed for Co III. In addition, statistically weighted level-resolved ground and metastable photoionization cross-sections are presented for Co II and compared directly with existing work.
description: 11 pages, 8 figures and 4 tables
Defects, band bending and ionization rings in MoS2
Creators: name: Di Bernardo, Iolanda
name: Blyth, James
name: Watson, Liam
name: Xing, Kaijian
name: Chen, Yi-Hsun
name: Chen, Shao-Yu
name: Edmonds, Mark T.
name: Fuhrer, Michael S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Chalcogen vacancies in transition metal dichalcogenides are widely acknowledged as both donor dopants and as a source of disorder. The electronic structure of sulphur vacancies in MoS2 however is still controversial, with discrepancies in the literature pertaining to the origin of the in-gap features observed via scanning tunneling spectroscopy (STS) on single sulphur vacancies. Here we use a combination of scanning tunnelling microscopy (STM) and STS to study embedded sulphur vacancies in bulk MoS2 crystals. We observe spectroscopic features dispersing in real space and in energy, which we interpret as tip position- and bias-dependent ionization of the sulphur vacancy donor due to tip induced band bending (TIBB). The observations indicate that care must be taken in interpreting defect spectra as reflecting in-gap density of states, and may explain discrepancies in the literature.
description: 7 pages, 5 figures
A study of a colorectal cancer prevention program in the Australian community
Creators: name: Nicholson., Fiona Bothwick
Publisher: name: Monash University
Year: 2021

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.
Prevention of human cytomegalovirus disease after stem cell transplantation
Creators: name: Nguyen., Thi Hoang Oanh
Publisher: name: Monash University
Year: 2021

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.
Detection of a second high velocity component in the highly ionized wind from PG 1211+143
Creators: name: Pounds, Ken
name: Lobban, Andrew
name: Reeves, James
name: Vaughan, Simon
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: An extended XMM-Newton observation of the luminous narrow line Seyfert galaxy PG 1211+143 in 2014 has revealed a more complex highly ionized, high velocity outflow. The detection of previously unresolved spectral structure in Fe K absorption finds a second outflow velocity component of the highly ionized wind, with an outflow velocity of v~0.066+/-0.003c, in addition to a still higher velocity outflow of v~0.129+/-0.002c consistent with that first seen in 2001. We note that chaotic accretion, consisting of many prograde and retrograde events, offers an intriguing explanation of the dual velocity wind. In that context the persisting outflow velocities could relate to physically distinct orientations of the inner accretion flow, with prograde accretion yielding a higher launch velocity than retrograde accretion in a ratio close to that observed.
description: Accepted for publication in MNRAS: 7 pages, 6 figures, 2 tables
Antiferromagnetic topological insulating state in Tb$_{0.02}$Bi$_{1.08}$Sb$_{0.9}$Te$_2$S single crystals
Creators: name: Guo, Lei
name: Zhao, Weiyao
name: Li, Qile
name: Xu, Meng
name: Chen, Lei
name: Bake, Abdulhakim
name: Vu, Thi-Hai-Yen
name: He, Yahua
name: Fang, Yong
name: Cortie, David
name: Mo, Sung-Kwan
name: Edmonds, Mark
name: Wang, Xiaolin
name: Dong, Shuai
name: Karel, Julie
name: Zheng, Ren-Kui
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Topological insulators are emerging materials with insulating bulk and symmetry protected nontrivial surface states. One of the most fascinating transport behaviors in a topological insulator is the quantized anomalous Hall insulator, which has been observed inmagnetic-topological-insulator-based devices. In this work, we report a successful doping of rare earth element Tb into Bi$_{1.08}$Sb$_{0.9}$Te$_2$S topological insulator single crystals, in which the Tb moments are antiferromagnetically ordered below ~10 K. Benefiting from the in-bulk-gap Fermi level, transport behavior dominant by the topological surface states is observed below ~ 150 K. At low temperatures, strong Shubnikov-de Haas oscillations are observed, which exhibit 2D-like behavior. The topological insulator with long range magnetic ordering in rare earth doped Bi$_{1.08}$Sb$_{0.9}$Te$_2$S single crystal provides an ideal platform for quantum transport studies and potential applications.
description: 15 pages, 3 figures
Observation of intrinsically bright terrestrial gamma ray flashes from the Mediterranean basin
Creators: name: Gjesteland, T.
name: Østgaard, N.
name: Laviola, S.
name: Maglietta, M. M.
name: Arnone, E.
name: Marisaldi, M.
name: Fuschino, F.
name: Collier, A. B.
name: Fabró, F.
name: Montanya, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Space Physics (physics.space-ph)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: We present three terrestrial gamma ray flashes (TGFs) observed over the Mediterranean basin by the Reuven Ramaty High Energy Solar Spectroscope Imager (RHESSI) satellite. Since the occurrence of these events in the Mediterranean region is quite rare, the characterisation of the events was optimised by combining different approaches in order to better define the cloud of origin. The TGFs on 7 November 2004 and 16 October 2006 came from clouds with cloud top higher than 10-12 km where often a strong penetration into the stratosphere is found. This kind of cloud is usually associated with heavy precipitation and intense lightning activity. Nevertheless, the analysis of the cloud type based on satellite retrievals shows that the TGF on 27 May 2004 was produced by an unusual shallow convection. This result appears to be supported by the model simulation of the particle distribution and phase in the upper troposphere. The TGF on 7 November 2004 is among the brightest ever measured by RHESSI. The analysis of the energy spectrum of this event is consistent with a production altitude $\leq$12 km, which is in the upper part of the cloud, as found by the meteorological analysis of the TGF-producing thunderstorm. This event must be unusually bright at the source in order to produce such a strong signal in RHESSI. We estimate that this TGF must contain $\sim$3x10$\rm ^{18}$ initial photons with energy $>$1 MeV. This is 1 order of magnitude brighter than earlier estimations of an average RHESSI TGF.
[ISSI 2023 Tutorial] Slides ''Transitioning towards Open Scientometrics with Open Science Graphs"
Creators: name: Mannocci, Andrea
name: Vergoulis, Thanasis
name: Manghi, Paolo
name: Sacharidis, Dimitris
Publisher: name: Zenodo
Year: 2023
Subjects: Open scientometrics
Open Science
Scientometrics
Virtual Research Environment
OpenAIRE
D4Science
Scholarly communication
Tutorial
Open Data
Scholarly Knowledge Graphs
Open Science Graphs

description: This presentation was given at the ISSI 2023 - International Society of Scientometrics and Informetrics Conference 2023
 July 2-5, 2023 | Bloomington, IN on 2nd of July. We presented the upcoming iteration of the OpenAIRE beginner's kit (a Dockerized container with Jupyter notebooks and Apache Spark to play with a subset of OpenAIRE data locally on your machine), and a new Virtual Research Environment called Open Scientometrics Lab (essentially, taking the beginner's kit into the cloud at zero cost and zero configuration).
 Via Spark, you can fake the presence of a SQL database and query OpenAIRE data.
Analytical scalar field solutions on Lifshitz spacetimes
Creators: name: Moreira, Danilo C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, we investigate the existence of analytic solutions of static scalar fields on Lifshitz spacetimes. We evade Derrick's theorem on curved spacetimes by breaking general covariance and use first-order formalism to obtain solutions with finite energy related to the time-translational invariance of the background geometry along with the energy-momentum tensor of the model. We show that such solutions exist and are stable in systems where the Lifshitz background geometry is fixed and the self-interaction potential of the scalar field explicitly depends on the radial coordinate present in the metric.
description: 7 pages, 3 figures, (V2) accepted in PRD, (V3) the text matches accepted version, (V4) erratum published in Phys. Rev. D 106, 039903(E) (2022) is added
Galaxy cluster number counts with individual lensing mass estimates: forecasts for Euclid
Creators: name: Artis, E.
name: Melin, J-B
name: Bartlett, J. G.
name: Murray, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Gradually, the $Λ$CDM model starts to be challenged by observational data. Upcoming cosmological surveys will increase the number of detected galaxy clusters by several orders of magnitude. Therefore, shortly, clusters will provide tremendous constraints on cosmology and sharpen our understanding of structure formation. However, a reliable framework is required to analyse future Euclid-like catalogs. We build a cluster likelihood based on individual masses and forecast Euclid performances within this framework. We use a matched filter for weak lensing mass estimation and model its characteristics with a set of simulations. We use the Flagship N-body simulation to emulate the expected cluster mass distribution of a Euclid-like sample and test our statistical framework against it. We prove that the joint callibration of the observable mass relation within this match filtering framework is possible.
description: "In the Proceedings of the International Conference entitled "mm Universe @ NIKA2", Rome (Italy), June 2021, EPJ Web of conferences."
Characterization of Simplices via the Bezout Inequality for Mixed volumes
Creators: name: Saroglou, Christos
name: Soprunov, Ivan
name: Zvavitch, Artem
Publisher: name: arXiv
Year: 2015
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 52A39, 52A40, 52B11

description: We consider the following Bezout inequality for mixed volumes: $$V(K_1,\dots,K_r,Δ[{n-r}])V_n(Δ)^{r-1}\leq \prod_{i=1}^r V(K_i,Δ[{n-1}])\ \text{ for }2\leq r\leq n.$$ It was shown previously that the inequality is true for any $n$-dimensional simplex $Δ$ and any convex bodies $K_1, \dots, K_r$ in $\mathbb{R}^n$. It was conjectured that simplices are the only convex bodies for which the inequality holds for arbitrary bodies $K_1, \dots, K_r$ in $\mathbb{R}^n$. In this paper we prove that this is indeed the case if we assume that $Δ$ is a convex polytope. Thus the Bezout inequality characterizes simplices in the class of convex $n$-polytopes. In addition, we show that if a body $Δ$ satisfies the Bezout inequality for all bodies $K_1, \dots, K_r$ then the boundary of $Δ$ cannot have strict points. In particular, it cannot have points with positive Gaussian curvature.
description: 8 pages
Hall quantization and optical conductivity evolution with variable Berry phase in $α$-$T_3$ model
Creators: name: Illes, E.
name: Carbotte, J. P.
name: Nicol, E. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The $α$-$T_3$ model is characterized by a variable Berry phase that changes continuously from $π$ to $0$. We take advantage of this property to highlight the effects of this underlying geometrical phase on a number of physical quantities. The Hall quantization of the two limiting cases is dramatically different - a relativistic series is associated with a Berry phase of $π$ and a non-relativistic series is associated with the other limit. We study the quantization of the Hall plateaux as they continuously evolve from a relativistic to a non-relativistic regime. Additionally, we describe two physical quantities that retain knowledge of the Berry phase, in the absence of a motion-inducing magnetic field. The variable Berry phase of the $α$-$T_3$ model allows us to explicitly describe the Berry phase dependence of the dynamical longitudinal optical conductivity and of the angular scattering probability.
Higgs Branches of U/SU Quivers via Brane Locking
Creators: name: Bourget, Antoine
name: Grimminger, Julius F.
name: Hanany, Amihay
name: Kalveks, Rudolph
name: Zhong, Zhenghao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We solve a long standing problem on the computation of the Higgs branch $\mathcal{H}$ of linear quivers with 8 supercharges and with both unitary and special unitary gauge nodes. The solution uses the concept of magnetic quivers, where components of $\mathcal{H}$ are described as 3d $\mathcal{N}=4$ Coulomb branches. When the starting quiver is good, there is a single component in $\mathcal{H}$ and the magnetic quiver is a 3d mirror. The magnetic quivers are obtained from studying the brane web for an auxiliary 5d theory (with only special unitary gauge groups), constrained by a new notion called brane locking, where some branes are required to move together. We view this as a computational tool rather than an operation in 5d. A detailed algorithm is given, and implemented in a code available for download.
description: Mathematica code available for download
The mechanism of action of CCK and gastrin on small intestinal motility
Creators: name: Chong., Ngu Meng
Publisher: name: Monash University
Year: 2021

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.
Modeling Orders of User Behaviors via Differentiable Sorting: A Multi-task Framework to Predicting User Post-click Conversion
Creators: name: Wang, Menghan
name: Yang, Jinming
name: Guo, Yuchen
name: Shen, Yuming
name: Zhu, Mengying
name: Wang, Yanlin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: User post-click conversion prediction is of high interest to researchers and developers. Recent studies employ multi-task learning to tackle the selection bias and data sparsity problem, two severe challenges in post-click behavior prediction, by incorporating click data. However, prior works mainly focused on pointwise learning and the orders of labels (i.e., click and post-click) are not well explored, which naturally poses a listwise learning problem. Inspired by recent advances on differentiable sorting, in this paper, we propose a novel multi-task framework that leverages orders of user behaviors to predict user post-click conversion in an end-to-end approach. Specifically, we define an aggregation operator to combine predicted outputs of different tasks to a unified score, then we use the computed scores to model the label relations via differentiable sorting. Extensive experiments on public and industrial datasets show the superiority of our proposed model against competitive baselines.
description: The paper is accepted as a short research paper by SIGIR 2023
Outnumbered online: Exploring perspectives of female gamers
Creators: name: Shi, Jing
Publisher: name: Singapore Institute of Technology
Year: 2023

description: Background and Objectives:With growing engagement with video games and a growing number of studies on gaming as an addiction, there are also increasing numbers of women who play video games than in previous decades. Many women experience playing online games differently from men. Thus, the implications for interventions whether we are treating women who have Internet gaming disorder or we are using games to treat other health issues, also differ. The aim of this scoping review was to identify, describe, and categorize female gamer characteristics, online experiences, and offline effects on female gamers.
Methods:Five stages of the York framework as outlined by Arksey and O’Malley were used to guide this review. A total of eight databases and four grey literature databases were searched, yielding 2511 hits. Forty-four full-text articles were included in the final analysis after independent screening by two individuals.
Results:The final articles included originated from 15 countries. There were four mixed methods studies, nine qualitative studies and 31 quantitative studies. The main results of this review were reported in three sections as follows: characteristics, online world and offline world. An overwhelming number of male respondents in these studies that predominately used survey/polling methods may fail to capture an accurate representation of female views. Females were found to play more interactive scenario-based games rather than shooter games. They also tended to be older than male gamers, brought their offline identities online, and played for the social aspect of gaming. Health concerns for adolescent girls were getting little sleep and having insufficient time to eat or not eating at all. Girl gamers also reported having higher incidences of depression and poorer psychological well-being.
Conclusions:More studies that exclusively focus on female views and health concerns are needed. Healthcare professionals can use the understanding of female gamers to tailor interventions for balancing gaming as a hobby versus gaming problematically to prevent Internet gaming disorder. Understanding female motivations for playing different genres of games can also enable healthcare providers and game developers to create more targeted and effective serious games for women.
A method to challenge symmetries in data with self-supervised learning
Creators: name: Tombs, Rupert
name: Lester, Christopher G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Symmetries are key properties of physical models and of experimental designs, but any proposed symmetry may or may not be realized in nature. In this paper, we introduce a practical and general method to test such suspected symmetries in data, with minimal external input. Self-supervision, which derives learning objectives from data without external labelling, is used to train models to predict 'which is real?' between real data and symmetrically transformed alternatives. If these models make successful predictions in independent tests, then they challenge the targeted symmetries. Crucially, our method handles filtered data, which often arise from inefficiencies or deliberate selections, and which could give the illusion of asymmetry if mistreated. We use examples to demonstrate how the method works and how the models' predictions can be interpreted. Code and data are available at https://zenodo.org/record/6861702.
description: 20 pages, 5 figures, reworked with more precise definitions
The Entanglement Wedge of Unknown Couplings
Creators: name: Almheiri, Ahmed
name: Lin, Henry W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The black hole interior is a mysterious region of spacetime where non-perturbative effects are sometimes important. These non-perturbative effects are believed to be highly theory-dependent. We sharpen these statements by considering a setup where the state of the black hole is in a superposition of states corresponding to boundary theories with different couplings, entangled with a reference which keeps track of those couplings. The entanglement wedge of the reference can then be interpreted as the bulk region most sensitive to the values of the couplings. In simple bulk models, e.g., JT gravity + a matter BCFT, the QES formula implies that the reference contains the black hole interior at late times. We also analyze the Renyi-2 entropy of the reference, which can be viewed as a diagnostic of chaos via the Loschmidt echo. We find explicitly the replica wormhole that diagnoses the island and restores unitarity. Numerical and analytical evidence of these statements in the SYK model is presented. Similar considerations are expected to apply in higher dimensional AdS/CFT, for marginal and even irrelevant couplings.
description: 59 pages, 16+ figs, no resolutions of any paradoxes, 1 day late, v2: slightly improved numerics in Section 3.3, bugs fixed in Section 3.4, v3: updated to match JHEP version
Micro-X Sounding Rocket Payload Re-flight Progress
Creators: name: Adams, J. S.
name: Bandler, S. R.
name: Bastidon, N.
name: Eckart, M. E.
name: Figueroa-Feliciano, E.
name: Fuhrman, J.
name: Goldfinger, D. C.
name: Hubbard, A. J. F.
name: Jardin, D.
name: Kelley, R. L.
name: Kilbourne, C. A.
name: Manzagol-Harwood, R. E.
name: McCammon, D.
name: Okajima, T.
name: Porter, F. S.
name: Reintsema, C. D.
name: Smith, S. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Micro-X is an X-ray sounding rocket payload that had its first flight on July 22, 2018. The goals of the first flight were to operate a transition edge sensor (TES) X-ray microcalorimeter array in space and take a high-resolution spectrum of the Cassiopeia A supernova remnant. The first flight was considered a partial success. The array and its time-division multiplexing readout system were successfully operated in space, but due to a failure in the attitude control system, no time on-target was acquired. A re-flight has been scheduled for summer 2022. Since the first flight, modifications have been made to the detector systems to improve noise and reduce the susceptibility to magnetic fields. The three-stage SQUID circuit, NIST MUX06a, has been replaced by a two-stage SQUID circuit, NIST MUX18b. The initial laboratory results for the new detector system will be presented in this paper.
description: LTD proceedings, 6 pages, 3 figures, 1 table
Theoretical Challenges in Polaritonic Chemistry
Creators: name: Fregoni, Jacopo
name: García-Vidal, Francisco J.
name: Feist, Johannes
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Polaritonic chemistry exploits strong light-matter coupling between molecules and confined electromagnetic field modes to enable new chemical reactivities. In systems displaying this functionality, the choice of the cavity determines both the confinement of the electromagnetic field and the number of molecules that are involved in the process, whereas in wavelength-scale optical cavities light-matter interaction is ruled by collective effects, plasmonic subwavelength nanocavities allow even single molecules to reach strong coupling. Due to these very distinct situations, a multiscale theoretical toolbox is then required to explore the rich phenomenology of polaritonic chemistry. Within this framework, each component of the system (molecules and electromagnetic modes) needs to be treated in sufficient detail to obtain reliable results. Starting from the very general aspects of light-molecule interactions in typical experimental setups, we underline the basic concepts that should be taken into account when operating in this new area of research. Building on these considerations, we then provide a map of the theoretical tools already available to tackle chemical applications of molecular polaritons at different scales. Throughout the discussion, we draw attention to both the successes and the challenges still ahead in the theoretical description of polaritonic chemistry.
description: 14 pages main text, 11 pages bibliography, 3 Figures
On the 3-dimensional invariant for cyclic contact branched coverings
Creators: name: Ito, Tetsuya
Publisher: name: arXiv
Year: 2015
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We give a formula of 3-dimensional invariant for a cyclic contact branched covering of the standard contact S^{3}.
description: 6 pages, 10 Figures
Diffusion in a system of a few distinguishable fermions in a one-dimensional double-well potential
Creators: name: Sowiński, Tomasz
name: Gajda, Mariusz
name: Rzążewski, Kazimierz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Dynamical properties of a few ultra-cold fermions confined in a double-well potential is studied. We show that the dynamics, which is governed by single-particle tunnelings for vanishing interactions, is completely different for strong interactions. Depending on the details of the configuration, for sufficiently strong interactions (repulsions or attractions) the particle flow through the barrier can be accelerated or slowed down. This effect cannot be explained with the single-particle picture. It is clarified with direct inspection to the spectrum of the few-body Hamiltonian.
description: Authors' version accepted in EPL
Reduced Dynamics of Full Counting Statistics
Creators: name: Pollock, Felix A.
name: Gull, Emanuel
name: Modi, K.
name: Cohen, Guy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a theory of modified reduced dynamics in the presence of counting fields. Reduced dynamics techniques are useful for describing open quantum systems at long emergent timescales when the memory timescales are short. However, they can be difficult to formulate for observables spanning the system and its environment, such as those characterizing transport properties. A large variety of mixed system--environment observables, as well as their statistical properties, can be evaluated by considering counting fields. Given a numerical method able to simulate the field-modified dynamics over the memory timescale, we show that the long-lived full counting statistics can be efficiently obtained from the reduced dynamics. We demonstrate the utility of the technique by computing the long-time current in the nonequilibrium Anderson impurity model from short-time Monte Carlo simulations.
Replication of togaviruses in A.albopictus (mosquito) cells
Creators: name: Ng., M. L.
Publisher: name: Monash University
Year: 2021

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.
OGLE-2012-BLG-0724Lb: A Saturn-mass Planet around an M-dwarf
Creators: name: Hirao, Y.
name: Udalski, A.
name: Sumi, T.
name: Bennett, D. P.
name: Bond, I. A.
name: Rattenbury, N.
name: Suzuki, D.
name: Koshimoto, N.
name: Abe, F.
name: Asakura, Y.
name: Bhattacharya, A.
name: Freeman, M.
name: Fukui, A.
name: Itow, Y.
name: Li, M. C. A.
name: Ling, C. H.
name: Masuda, K.
name: Matsubara, Y.
name: Matsuo, T.
name: Muraki, Y.
name: Nagakane, M.
name: Ohnishi, K.
name: Oyokawa, H.
name: Saito, To.
name: Sharan, A.
name: Shibai, H.
name: Sullivan, D. J.
name: Tristram, P. J.
name: Yonehara, A.
name: Poleski, R.
name: Skowron, J.
name: Mróz, P.
name: Szymański, M. K.
name: Kozłowski, S.
name: Pietrukowicz, P.
name: Soszyński, I.
name: Wyzykowski, Ł.
name: Ulaczyk, K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the discovery of a planet by the microlensing method, OGLE-2012-BLG-0724Lb. Although the duration of the planetary signal for this event was one of the shortest seen for a planetary event, the anomaly was well covered thanks to high cadence observations taken by the survey groups OGLE and MOA. By analyzing the light curve, this planetary system is found to have a mass ratio $q=(1.58\pm0.15)\times10^{-3}$. By conducting a Bayesian analysis, we estimate that the host star is an M-dwarf star with a mass of $M_{\rm L}=0.29_{-0.16}^{+0.33} \ M_{\odot}$ located at $D_{\rm L}=6.7_{-1.2}^{+1.1} \ {\rm kpc}$ away from the Earth and the companion's mass is $m_{\rm P}=0.47_{-0.26}^{+0.54} \ M_{\rm Jup}$. The projected planet-host separation is $a_{\perp}=1.6_{-0.3}^{+0.4} \ {\rm AU}$. Because the lens-source relative proper motion is relatively high, future high resolution images would detect the lens host star and determine the lens properties uniquely. This system is likely a Saturn-mass exoplanet around an M-dwarf and such systems are commonly detected by gravitational microlensing. This adds an another example of a possible pileup of sub-Jupiters $(0.2 < m_{\rm P}/M_{\rm Jup} < 1)$ in contrast to a lack of Jupiters ($\sim 1 - 2 \ M_{\rm Jup}$) around M-dwarfs, supporting the prediction by core accretion models that Jupiter-mass or more massive planets are unlikely to form around M-dwarfs.
description: 22 pages, 7 figures, 2 tables, accepted for publication in ApJ
Experimental Test of Entangled Histories
Creators: name: Cotler, Jordan
name: Duan, Lu-Ming
name: Hou, Pan-Yu
name: Wilczek, Frank
name: Xu, Da
name: Yin, Zhang-Qi
name: Zu, Chong
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose and demonstrate experimentally a scheme to create entangled history states of the Greenberger-Horne-Zeilinger (GHZ) type. In our experiment, the polarization states of a single photon at three different times are prepared as a GHZ entangled history state. We define a GHZ functional which attains a maximum value $1$ on the ideal GHZ entangled history state and is bounded above by $1/16$ for any three-time history state lacking tripartite entanglement. We have measured the GHZ functional on a state we have prepared experimentally, yielding a value of $0.656\pm 0.005$, clearly demonstrating the contribution of entangled histories.
description: 15 pages, 2 figures v. 2: 16 pages, 2 figures. Fundamental improvements to introduction, added references
Freezing of Gauge Symmetries in the Heterotic String on $T^4$
Creators: name: Fraiman, Bernardo
name: de Freitas, Héctor Parra
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive a map relating the gauge symmetry groups of heterotic strings on $T^4$ to other components of the moduli space with rank reduction. This generalizes the results for $T^2$ and $T^3$ which mirror the singularity freezing mechanism of K3 surfaces in F and M-theory, respectively. The novel feature in six dimensions is that the map explicitly involves the topology of the gauge groups, in particular acting only on non-simply-connected ones. This relation is equivalent to that of connected components of the moduli space of flat $G$-bundles over $T^2$ with $G$ non-simply-connected. These results are verified with a reasonably exhaustive list of gauge groups obtained with a moduli space exploration algorithm.
description: 27 pages, v2: minor corrections
Scaling of elliptic flow in heavy-ion collisions with the number of constituent quarks in a transport model
Creators: name: Singha, Subhash
name: Nasim, Md.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We studied the number of constituent quark scaling (NCQ) behaviour of elliptic flow ($v_{2}$) under the framework of A Multi-Phase Transport model (AMPT) at both top-RHIC and LHC energies. The NCQ-scaling in $v_{2}$ holds at top-RHIC energy with AMPT string melting version, while it breaks in Pb+Pb collisions at LHC energy using the same framework. The breaking of NCQ-scaling at LHC energy has been studied by varying the magnitude of parton-parton scattering cross-section and lifetime of hadronic cascade as implemented in AMPT. We find that the breaking of NCQ scaling in Pb+Pb collisions at $\sqrt{s_{NN}}$ =2.76 TeV is independent of the magnitude of parton-parton cross-section and the later stage hadronic interactions. Further we observed that scaling holds in a small collision system like Si+Si at $\sqrt{s_{NN}}$ = 2.76 TeV. We discussed that the breaking of NCQ scaling is possibly due to high phase-space density of constituents quarks in Pb+Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV.
description: published version, Phys. Rev. C 93, 034908 (2016)
Entanglement of Orbital Angular Momentum in Non-Sequential Double Ionization
Creators: name: Maxwell, Andrew S.
name: Madsen, Lars Bojer
name: Lewenstein, Maciej
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate entanglement between the orbital angular momentum (OAM) of two photoelectrons ionized via the strongly correlated process of non-sequential double ionization (NSDI). Due to the quantization of OAM, this entanglement is easily quantified and has a simple physical interpretation in terms of conservation laws. We explore detection by an entanglement witness, decomposable into local measurements, which strongly reduces the difficulty of experimental implementation. We compute the logarithmic negativity measure, which is directly applicable to mixed states, to demonstrate that the entanglement is robust to incoherent effects such as focal averaging. Using the strong-field approximation, we quantify the entanglement for a large range of targets and field parameters, isolating the best targets for experimentalists. The methodology presented here provides a general way to use OAM to quantify and, in principle, measure entanglement, that is well-suited to attosecond processes, can enhance our understanding and may be exploited in imaging processes or the generation of OAM-entangled electrons.
description: 16 pages, 4 figures
Algebro-geometric solutions to the lattice potential modified Kadomtsev--Petviashvili equation
Creators: name: Xu, Xiaoxue
name: Cao, Cewen
name: Zhang, Da-jun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Algebro-geometric solutions of the lattice potential modified Kadomtsev-Petviashvili (lpmKP) equation are constructed. A Darboux transformation of the Kaup--Newell spectral problem is employed to generate a Lax triad for the lpmKP equation, as well as to define commutative integrable symplectic maps which generate discrete flows of eigenfunctions. These maps share the same integrals with the finite-dimensional Hamiltonian system associated to the Kaup-Newell spectral problem. We investigate asymptotic behaviors of the Baker-Akhiezer functions and obtain their expression in terms of Riemann theta function. Finally, algebro-geometric solutions for the lpmKP equation are reconstructed from these Baker-Akhiezer functions.
description: 28 pages