cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Human spermatozoal hyaluronidase
Creators: name: Stojanoff, Alexander.
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.
Distinguishing two dark matter component particles at $e^+e^-$ colliders
Creators: name: Bhattacharya, Subhaditya
name: Ghosh, Purusottam
name: Lahiri, Jayita
name: Mukhopadhyaya, Biswarup
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this work we demonstrate that a distorted double hump like missing energy ($\slashed{E}$) or missing transverse momentum ($\slashed{E}_T$) or missing mass ($\slashed{M}$) distribution at $e^+e^-$ colliders may hint towards the presence of multipartite dark sector. We illustrate the phenomena using a two component dark matter (DM) model involving an inert scalar doublet stabilised under a $\mathcal{Z}_2$ symmetry providing a scalar DM, one vector like fermion doublet and a right handed fermion singlet both stabilised under a different $\mathcal{Z}^{'}_2$ providing a fermion DM. We indicate the region of parameter space where the production of the heavy charged particles and their subsequent decay to DM yield double peak behaviour in $\slashed{E}$ spectrum after satisfying DM constraints. Importantly, we illustrate why and how $\slashed{E}$ serves as a better variable than $\slashed{E}_T$ in distinguishing two component DM frameworks and therefore how International Linear Collider (ILC) does better than the ongoing Large Hadron Collider (LHC). We also chalk out a set of criteria to identify and segregate the second peak in $\slashed{E}$ spectrum, after a careful analysis of the corresponding Standard Model (SM) background contribution, which plays a crucial role.
description: Accepted for publication in JHEP
Learning Stochastic Dynamics with Statistics-Informed Neural Network
Creators: name: Zhu, Yuanran
name: Tang, Yu-Hang
name: Kim, Changho
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Artificial Intelligence (cs.AI)
subject: Dynamical Systems (math.DS)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We introduce a machine-learning framework named statistics-informed neural network (SINN) for learning stochastic dynamics from data. This new architecture was theoretically inspired by a universal approximation theorem for stochastic systems, which we introduce in this paper, and the projection-operator formalism for stochastic modeling. We devise mechanisms for training the neural network model to reproduce the correct \emph{statistical} behavior of a target stochastic process. Numerical simulation results demonstrate that a well-trained SINN can reliably approximate both Markovian and non-Markovian stochastic dynamics. We demonstrate the applicability of SINN to coarse-graining problems and the modeling of transition dynamics. Furthermore, we show that the obtained reduced-order model can be trained on temporally coarse-grained data and hence is well suited for rare-event simulations.
Impact of cosmic rays on the global 21-cm signal during cosmic dawn
Creators: name: Bera, Ankita
name: Samui, Saumyadip
name: Datta, Kanan K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: It is extremely important to understand the processes through which the thermal state of the inter-galactic medium (IGM) evolved in the early universe in order to study the evolution of HI 21-cm signal during cosmic dawn. Here, we consider the heating of the IGM due to cosmic ray protons generated by the supernovae from both early Pop III and Pop II stars. The low energy cosmic ray protons from Pop III supernovae can escape from minihalos and heat the IGM via collision and ionization of hydrogen. Furthermore, high energy protons generated in Pop II supernovae can escape the hosting halos and heat the IGM via magnetosonic Alfvén waves. We show that the heating due to these cosmic ray particles can significantly impact the IGM temperature and hence the global 21-cm signal at $z\sim 14-18$. The depth, location, and duration of the 21-cm absorption profile are highly dependent on the efficiencies of cosmic ray heating. In particular, the EDGES signal can be well fitted by the cosmic ray heating along with the Lyman-$α$ coupling, and the dark matter-baryon interaction that we consider to achieve a `colder IGM background'. Further, we argue that the properties of cosmic rays and the nature of first generation of stars could be constrained by accurately measuring the global 21-cm absorption signal during the cosmic dawn.
description: 15 pages, 9 figures, accepted for publication in MNRAS
Theoretical studies of specific heat in glasses
Creators: name: Cookson, Philip.
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.
The rise of the lottery heroes: why zero-shot pruning is hard
Creators: name: Tartaglione, Enzo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Recent advances in deep learning optimization showed that just a subset of parameters are really necessary to successfully train a model. Potentially, such a discovery has broad impact from the theory to application; however, it is known that finding these trainable sub-network is a typically costly process. This inhibits practical applications: can the learned sub-graph structures in deep learning models be found at training time? In this work we explore such a possibility, observing and motivating why common approaches typically fail in the extreme scenarios of interest, and proposing an approach which potentially enables training with reduced computational effort. The experiments on either challenging architectures and datasets suggest the algorithmic accessibility over such a computational gain, and in particular a trade-off between accuracy achieved and training complexity deployed emerges.
Lyα Halos around [O III]-Selected Galaxies in HETDEX
Creators: name: Niemeyer, Maja Lujan
name: Bowman, William P.
name: Ciardullo, Robin
name: Gronke, Max
name: Komatsu, Eiichiro
name: Fabricius, Maximilian
name: Farrow, Daniel J.
name: Finkelstein, Steven L.
name: Gebhardt, Karl
name: Gronwall, Caryl
name: Hill, Gary J.
name: Liu, Chenxu
name: Cooper, Erin Mentuch
name: Schneider, Donald P.
name: Tuttle, Sarah
name: Zeimann, Gregory R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present extended Lyman-α (Lyα) emission out to 800 kpc of 1034 [O III]-selected galaxies at redshifts 1.940 kpc from the galaxy centers. The surface brightness in the inner parts (r<10 kpc) around the [O III]-selected galaxies, however, is ten times fainter than that of the LAEs. Our results are consistent with the notion that photons dominating the outer regions of the Lyα halos are not produced in the central galaxies but originate outside of them.
description: 7 pages, 3 figures, accepted by Astrophysical Journal Letters
On computation of limiting coderivatives of the normal-cone mapping to inequality systems and their applications
Creators: name: Gfrerer, Helmut
name: Outrata, Jiří V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49J53, 90C31, 90C46

description: The paper concerns the computation of the limiting coderivative of the normal-cone mapping related to $C^{2}$ inequality constraints under weak qualification conditions. The obtained results are applied to verify the Aubin property of solution maps to a class of parameterized generalized equations.
โครงสร้าง – หน้าที่ของการเล่นพนันภาคกลาง กรณีศึกษาจังหวัดอยุธยาและจังหวัดชลบุรี
Creators: name: ธนิต โตอดิเทพย์
Publisher: name: สำนักงานบริหารการวิจัย นวัตกรรมและการสร้างสรรค์
Year: 2023
Subjects: การพนัน
ชุมชนเมือง
ภาคกลาง

description: วารสารมหาวิทยาลัยศิลปากร, 43, 2, 82-96
Data-driven discovery of active nematic hydrodynamics
Creators: name: Joshi, Chaitanya
name: Ray, Sattvic
name: Lemma, Linnea
name: Varghese, Minu
name: Sharp, Graham
name: Dogic, Zvonimir
name: Baskaran, Aparna
name: Hagan, Michael F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Two-dimensional active nematics are often modeled using phenomenological continuum theories that describe the dynamics of the nematic director and fluid velocity through partial differential equations (PDEs). While these models provide a statistically accurate description of the experiments, the identification of the relevant terms in the PDEs and their parameters is usually indirect. Here, we adapt a recently developed method to automatically identify optimal continuum models for active nematics directly from the spatio-temporal director and velocity data, via sparse fitting of the coarse-grained fields onto generic low order PDEs. We test the method extensively on computational models, and then apply it to data from experiments on microtubule-based active nematics. Thereby, we identify the optimal models for microtubule-based active nematics, along with the relevant phenomenological parameters. We find that the dynamics of the orientation field are largely governed by its coupling to the underlying flow, with free-energy gradients playing a negligible role. Furthermore, by fitting the flow equation to experimental data, we estimate a key parameter quantifying the `activity' of the nematic.
A spectroscopic study of 14 structures behind Holm15A: Detecting a galaxy group candidate at z=0.58
Creators: name: Ibarra-Medel, Hector
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Holm15A hosts one of the most massive back holes ever known. Hence, it is important to characterize any structure within its core to avoid any wrong association with its central black hole and, therefore, bias any future study. In this work, we present the first identification and characterization of 14 structures hidden behind the surface brightness of Holm15A. We model and subtract the spectral contribution of Holm15A to obtain the spectral information of these structures. We spectroscopically confirm that the 14 objects found are not associated with Holm15A. Ten objects have a well-defined galaxy spectrum from which we implement a fossil record analysis to reconstruct their past evolution. Nine objects are candidates members to be part of a compact galaxy group at redshift 0.5814. We find past mutual interaction among the group candidates that support the scenario of mutual crossings. Furthermore, the fossil reconstruction of the group candidates brings evidence that at least three different merger trees could assemble the galaxy group. We characterize the properties of the galaxy group from which we estimate a lower limit of the scale and mass of this group. We obtain a scale of $>$146$\pm$3 kpc with a dispersion velocity of 622$\pm$300 km/s. These estimations consider the lensing effects of the gravitational potential of Holm15A. The other five objects were studied individually. We use public archive data of integral field spectroscopic observations from the Multi-Unit Spectroscopic Explorer instrument.
description: 14 pages, 12 figures, 2 tables. Accepted for publication in MNRASS
Preserving multi-level quantum coherence by dynamical decoupling
Creators: name: Yuan, Xinxing
name: Li, Yue
name: Zhang, Mengxiang
name: Liu, Chang
name: Zhu, Mingdong
name: Qin, Xi
name: Vitanov, Nikolay V.
name: Lin, Yiheng
name: Du, Jiangfeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum information processing with multi-level systems (qudits) provides additional features and applications than the two-level systems. However, qudits are more prone to dephasing and dynamical decoupling for qudits has never been experimentally demonstrated. Here, as a proof-of-principle demonstration, we experimentally apply dynamical decoupling to protect superpositions with three levels of a trapped $^9\rm{Be}^+$ ion from ambient noisy magnetic field, prolonging coherence by up to approximately an order of magnitude. Our demonstration, straightforwardly scalable to more levels, may open up a path toward long coherence quantum memory, metrology and information processing with qudits.
description: 6 pages, 7 figures
The effect of human growth hormone fragments on glucose metabolism in vivo and in vitro
Creators: name: Harcourt, Jennifer Ann.
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.
Effect of congestion avoidance due to congestion information provision on optimizing agent dynamics on an endogenous star network topology
Creators: name: Tsuzuki, Satori
name: Yanagisawa, Daichi
name: Nishinari, Katsuhiro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Other Statistics (stat.OT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The importance of fundamental research on network topologies is widely acknowledged. This study aims to elucidate the effect of congestion avoidance of agents given congestion information on optimizing traffic in a network topology. We investigated stochastic traffic networks in a star topology with a central node connected to isolated secondary nodes with different preferences. Each agent at the central node selects a secondary node by referring to the declining preferences based on the congestion rate of the secondary nodes. We examined two scenarios: 1) Each agent can repeatedly visit the central and secondary nodes. 2) Each agent can access each secondary node only once. For 1), we investigated the uniformity of the agent distribution in a stationary state, and for 2), we measured the travel time for all agents visiting all nodes. When agents repeatedly visit central and other nodes, the uniformity of agent distribution has been found to show three types of nonlinear dependence on the increase in nodes. We found that multivariate statistics describe these characteristic dependences well, suggesting that the balance between the equalization of network usage by avoiding congestion and the covariance caused by mutual referral to congestion information determines the uniformity. We discovered that congestion-avoidance linearizes the travel time, which increases exponentially with the number of nodes, notwithstanding the degree of reference to the congestion information. Consequently, we successfully described the optimization effect of congestion-avoidance on the collective dynamics of agents in star topologies. Our findings are useful in many areas of network science.
Measurement of the Parity-Odd Angular Distribution of Gamma Rays From Polarized Neutron Capture on $^{35}$Cl
Creators: name: Fomin, N.
name: Alarcon, R.
name: Alonzi, L.
name: Askanazi, E.
name: Baeßler, S.
name: Balascuta, S.
name: Barrón-Palos, L.
name: Barzilov, A.
name: Blyth, D.
name: Bowman, J. D.
name: Birge, N.
name: Calarco, J. R.
name: Chupp, T. E.
name: Cianciolo, V.
name: Coppola, C. E.
name: Crawford, C. B.
name: Craycraft, K.
name: Evans, D.
name: Fieseler, C.
name: Frlež, E.
name: Fry, J.
name: Garishvili, I.
name: Gericke, M. T. W.
name: Gillis, R. C.
name: Grammer, K. B.
name: Greene, G. L.
name: Hall, J.
name: Hamblen, J.
name: Hayes, C.
name: Iverson, E. B.
name: Kabir, M. L.
name: Kucuker, S.
name: Lauss, B.
name: Mahurin, R.
name: McCrea, M.
name: Maldonado-Velázquez, M.
name: Masuda, Y.
name: Mei, J.
name: Milburn, R.
name: Mueller, P. E.
name: Musgrave, M.
name: Nann, H.
name: Novikov, I.
name: Parsons, D.
name: Penttilä, S. I.
name: Počanić, D.
name: Ramirez-Morales, A.
name: Root, M.
name: Salas-Bacci, A.
name: Santra, S.
name: Schröder, S.
name: Scott, E.
name: Seo, P. -N.
name: Sharapov, E. I.
name: Simmons, F.
name: Snow, W. M.
name: Sprow, A.
name: Stewart, J.
name: Tang, E.
name: Tang, Z.
name: Tong, X.
name: Turkoglu, D. J.
name: Whitehead, R.
name: Wilburn, W. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We report a measurement of two energy-weighted gamma cascade angular distributions from polarized slow neutron capture on the ${}^{35}$Cl nucleus, one parity-odd correlation proportional to $\vec{s_{n}} \cdot \vec{k_γ}$ and one parity-even correlation proportional to $\vec{s_{n}} \cdot \vec{k_{n}} \times \vec{k_γ}$. A parity violating asymmetry can appear in this reaction due to the weak nucleon-nucleon (NN) interaction which mixes opposite parity S and P-wave levels in the excited compound $^{36}$Cl nucleus formed upon slow neutron capture. If parity-violating (PV) and parity-conserving (PC) terms both exist, the measured differential cross section can be related to them via $\frac{dσ}{dΩ}\propto1+A_{γ, PV}\cosθ+A_{γ,PC}\sinθ$. The PV and PC asymmetries for energy-weighted gamma cascade angular distributions for polarized slow neutron capture on $^{35}$Cl averaged over the neutron energies from 2.27~meV to 9.53~meV were measured to be $A_{γ,PV}=(-23.9\pm0.7)\times 10^{-6}$ and $A_{γ,PC}=(0.1\pm0.7)\times 10^{-6}$. These results are consistent with previous experimental results. Systematic errors were quantified and shown to be small compared to the statistical error. These asymmetries in the angular distributions of the gamma rays emitted from the capture of polarized neutrons in $^{35}$Cl were used to verify the operation and data analysis procedures for the NPDGamma experiment which measured the parity-odd asymmetry in the angular distribution of gammas from polarized slow neutron capture on protons.
Ultraviolet Spectroscopy of Lucy Mission Targets with the Hubble Space Telescope
Creators: name: Humes, Oriel A.
name: Thomas, Cristina A.
name: Emery, Joshua P.
name: Grundy, Will M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The recently launched Lucy mission aims to understand the dynamical history of the Solar System by examining the Jupiter Trojans, a population of primitive asteroids co-orbital with Jupiter. Using the G280 grism on the Hubble Space Telescope's Wide Field Camera 3 we obtained near ultraviolet spectra of four of the five Lucy mission targets -- (617) Patroclus-Menoetius, (11351) Leucus, (3548) Eurybates, and (21900) Orus -- to search for novel spectral features. We observe a local reflectance minimum at 0.4 $μ$m accompanied by an increase in reflectance from 0.35-0.3 $μ$m in the spectra of Patroclus and Orus. We use the principles of Rayleigh scattering and geometric optics to develop a Hapke optical model to investigate whether this feature can be explained by the presence of submicroscopic grains on Trojan surfaces. The near ultraviolet "bump" feature can be explained by scattering due to fine-grained opaques (iron, amorphous carbon, or graphite) with grain sizes ranging from 20 - 80 nm.
description: 16 pages, 4 figures, Accepted for publication in PSJ
MN4 Embedded Graphene Layers: Tunable Decay Rate of RKKY Interaction
Creators: name: Rezaei, Mahnaz
name: Abouie, Jahanfar
name: Nazari, Fariba
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: One of the most important tasks in the development of high-performance spintronic devices is the preparation of two dimensional (2D) magnetic layers with long-range exchange interactions. MN4 embedded graphene (MN4-G) layers, with M being transition metal elements, are experimentally accessible 2D layers, which exhibit interesting magnetic properties. In this paper, by employing the spin-polarized density functional theory (SP-DFT), we study MN4-G layers with a special focus on the behavior of the indirect M-M exchange interactions, and demonstrate that the MN4-Gs with M = Fe, Mn and Co, are 2D anisotropic magnetic layers with Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction. By examining the electronic configurations of the M atoms for various M-M spacers, we demonstrate that the RKKY interaction in such layers are tunable and exhibiting an unusual prolonged decay (r to the power of minus n, n between 0.5 and 2). In addition, we investigate the influence of the CuN4 moiety in the graphene host, and show that, in contrary to the other MN4-Gs, the 2D CuN4-G layer behaves as decoupled one-dimensional spin chains, regardless of the spacer lengths.
description: 21 pages, 15 figures
The Production of Singly Charmed Pentaquark $\bar c q qqq$ from Bottom Baryon
Creators: name: Xing, Ye
name: Liu, Wan-Liang
name: Xiao, Yi-Hua
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the paper, we study the production of pentaquark $\bar{c}q qqq$ from singly bottom baryon. The tensor representations of pentaquark $\bar{c}q qqq$ are completed at first. Under the light quark symmetry analysis, we decompose the singly charmed pentaquarks into $6$, $15$ and $15'$ multiple states, and deduce the representations of these states. Then we construct the production Hamiltonian of the multiple states in proper order. For completeness, we systematically study the production channels of pentaquark states, including the possible production amplitudes and cross section relations between different channels. Ultimately, we screen out some advantageous channels, which expected to be fairly valuable supports for future search experiments.
description: 18 pages,2 figures
A Geometric Formulation of Supersymmetry
Creators: name: Freedman, Daniel Z.
name: Roest, Diederik
name: Van Proeyen, Antoine
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The scalar fields of supersymmetric models are coordinates of a geometric space. We propose a formulation of supersymmetry that is covariant with respect to reparametrizations of this target space. Employing chiral multiplets as an example, we introduce modified supersymmetry variations and redefined auxiliary fields that transform covariantly under reparametrizations. The resulting action and transformation laws are manifestly covariant and highlight the geometric structure of the supersymmetric theory. The covariant methods are developed first for general theories (not necessarily supersymmetric) whose scalar fields are coordinates of a Riemannian target space.
description: 14 pages; v2: references added
Annexes Numériques Mémoire de Master 1 Humanités Numériques et Computationnelles
Creators: name: Janes, Juliette
Publisher: name: Zenodo
Year: 2020

description: Scripts, données brutes et transformées utilisées dans le cadre du mémoire de master 1 "Humanités Numériques et Computationnelles" de Paris-Sciences et Lettres. Juliette Janes, "Exploitation, marginalisation et destruction des zones humides: cartographie SIG et extraction automatique de données pour une étude des tourbières de l'Oise de 1750 à 1950", mémoire de Master 1 "Humanités Numériques et Computationnelles", dir. Laurent Herment et Eric Mermet, Université Paris, Sciences et Lettres, 2020
Weak Gravity Conjecture from Conformal Field Theory: A Challenge from Hyperscaling Violating and Kerr-Newman-AdS Black Holes
Creators: name: Sadeghi, Jafar
name: Shokri, Mehdi
name: Alipour, Mohammad Reza
name: Gashti, Saeed Noori
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We search for a possible relation between weak gravity conjecture and conformal field theory in the hyperscaling violating and Kerr-Newman-AdS black holes. We deal with the critical points of the black hole systems through the correlation function introduced in conformal field theory. We discuss the weak gravity conjecture conditions by the imaginary part of the energy obtained from the critical points and their poles. Under the assumptions $z=1$, $d=1$ and $θ\rightarrow0^{-}$, we link weak gravity conjecture to the hyperscaling violating black holes due to the existence of $r_{H}$ larger and smaller than one. As the second black hole system, we study the conditions of weak gravity conjecture for the Kerr-Newman-AdS black hole by rotation and radius parameters. Then, we show that the conditions of weak gravity conjecture are satisfied when the charged particle near the hyperscaling violating and Kerr-Newman black holes is $\frac{1}{a}$ with a ratio $\frac{a}{\ell}\ll 1$.
description: 10 pages, 3 figures, To be published in Chinese Physics C
Insulin binding to erythrocytes in diabetes mellitus : effect of continuous subcutaneous insulin infusion and mean cell age
Creators: name: Babacan, Erol.
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.
The distribution of dust in edge-on galaxies: I. The global structure
Creators: name: Mosenkov, Aleksandr V.
name: Usachev, Pavel A.
name: Shakespear, Zacory
name: Guerrette, Jacob
name: Baes, Maarten
name: Bianchi, Simone
name: Xilouris, Emmanuel M.
name: Gontcharov, George A.
name: Il'in, Vladimir B.
name: Marchuk, Alexander A.
name: Savchenko, Sergey S.
name: Smirnov, Anton A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this first paper in a series we present a study of the global dust emission distribution in nearby edge-on spiral galaxies. Our sample consists of 16 angularly large and 13 less spatially resolved galaxies selected from the DustPedia sample. To explore the dust emission distribution, we exploit the Herschel photometry in the range 100-500 $μ$m. We employ Sérsic and three-dimensional disc models to fit the observed two-dimensional profiles of the galaxies. Both approaches give similar results. Our analysis unequivocally states the case for the presence of extraplanar dust in between 6 to 10 large galaxies. The results reveal that both the disc scale length and height increase as a function of wavelength between 100 and 500 $μ$m. The dust disc scale height positively correlates with the dust disc scale length, similar to what is observed for the stellar discs. We also find correlations between the scale lengths and scale heights in the near- and far-infrared which suggest that the stellar discs and their dust counterparts are tightly connected. Furthermore, the intrinsic flattening of the dust disc is inversely proportional to the maximum rotation velocity and the dust mass of the galaxy: more massive spiral galaxies host, on average, relatively thinner dust discs. Also, there is a tendency for the dust-to-stellar scale height ratio to decrease with the dust mass and rotation velocity. We conclude that low-mass spiral galaxies host a diffuse, puffed-up dust disc with a thickness similar to that of the stellar disc.
description: 22 pages, 14 figures, accepted for publication in MNRAS
Quantum electrodynamics in the null-plane causal perturbation theory
Creators: name: Acevedo, O. A.
name: Pimentel, B. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study quantum electrodynamics (QED) in the light-front dynamical form by using null-plane causal perturbation theory. We establish the equivalence with instant dynamics for the scattering processes, whose normalization allows to construct the instantaneous terms of the usual null-plane QED Lagrangian density. Then we study vacuum polarization and normalize it by studying its insertions into Møller's scattering process, obtaining the complete photon's propagator, which turns to be equivalent to the one of instant dynamics only when gauge invariance is taken into account.
description: To be published in Phys. Rev. D
Ultrastructure of colonic carcinoma cells exposed to 5-fluorouracil treatment
Creators: name: Melik-Babakhanov, Lyubov.
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.
Optically probing the detection mechanism in a molybdenum silicide superconducting nanowire single-photon detector
Creators: name: Caloz, Misael
name: Korzh, Boris
name: Timoney, Nuala
name: Weiss, Markus
name: Gariglio, Stefano
name: Warburton, Richard J.
name: Schönenberger, Christian
name: Renema, Jelmer
name: Zbinden, Hugo
name: Bussieres, Felix
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Instrumentation and Detectors (physics.ins-det)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We experimentally investigate the detection mechanism in a meandered molybdenum silicide (MoSi) superconducting nanowire single-photon detector by characterising the detection probability as a function of bias current in the wavelength range of 750 to 2050 nm. Contrary to some previous observations on niobium nitride (NbN) or tungsten silicide (WSi) detectors, we find that the energy-current relation is nonlinear in this range. Furthermore, thanks to the presence of a saturated detection efficiency over the whole range of wavelengths, we precisely quantify the shape of the curves. This allows a detailed study of their features, which are indicative of both Fano fluctuations and position-dependent effects.
Early Neoproterozoic magmatism and Caledonian metamorphism recorded by the Mårma Terrane, Seve Nappe Complex, northern Swedish Caledonides
Creators: name: Callegari, Riccardo
name: Kośmińska, Karolina
name: Barnes, Christopher J.
name: Klonowska, Iwona
name: Barker, Abigail K.
name: Rousku, Sabine
name: Nääs, Erika
name: Kooijman, Ellen
name: Witt-Nilsson, Patrik
name: Majka, Jarosław
Publisher: name: Geological Society of London
Year: 2023
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Figure S1. Geothermobarometry results for sample KB17-14b. Ellipses, both violet and light blue, indicate the garnet-biotite thermometer (GB) of Holdaway (2000) and the garnet-biotite-muscovite-plagioclase barometer (GBMP) of Wu (2015) for garnet core + biotite and muscovite inclusion in garnet + plagioclase core and garnet rim + biotite and muscovite in the matrix + plagioclase rim respectively. The green colored bar represents the calculation for the Ti-in-biotite thermometer of Wu and Chen (2015). The red- and yellow-colored bars represent the calculation for the Zr-in-rutile thermometer of Kohn (2020) for rutile inclusions in garnet and rutile in the matrix respectively.
Axial anomaly and energy dependence of hyperon polarization in Heavy-Ion Collisions
Creators: name: Sorin, A.
name: Teryaev, O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We address the issue of energy and charge dependence of global polarization of $Λ$ hyperons in peripheral $Au-Au$ collisions recently observed by the STAR collaboration at RHIC. We compare different contributions to the anomalous mechanism relating polarization to vorticity and hydrodynamic helicity in QCD matter. We stress that the suppression of the gravitational anomaly contribution in strongly correlated matter observed in lattice simulations confirms our earlier prediction of rapid decrease of polarization with increasing collision energy. Our mechanism leads to polarization of $\bar Λ$ of the same sign and larger magnitude than the polarization of $Λ$. The energy and charge dependence of polarization is suggested as a sensitive probe of fine details of QCD matter structure.
description: 10 pages, 1 figure
The Pre-He White Dwarfs in Eclipsing Binaries. IV. WASP 1814+48 with Multiperiodic Pulsations
Creators: name: Lee, Jae Woo
name: Hong, Kyeongsoo
name: Kim, Hye-Young
name: Park, Jang-Ho
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: For the EL CVn candidate 1SWASPJ181417.43+481117.0 (WASP 1814+48), we secured the first spectroscopic observations between 2015 April and 2021 March. Using the echelle spectra, the radial velocities (RVs) of the primary star were measured with its atmospheric parameters of $T_{\rm eff,1}=7770\pm130$ K and $v_1$$\sin$$i=47\pm6$ km s$^{-1}$. We fitted our single-lined RVs and the TESS light curve simultaneously. From the binary modeling, we determined the following fundamental parameters for each component: $M_1=1.659\pm0.048$ $M_\odot$, $R_1=1.945\pm0.027$ $R_\odot$, and $L_1=12.35\pm0.90$ $L_\odot$ for WASP 1814+48 A, and $M_2=0.172\pm0.005$ $M_\odot$, $R_2=0.194\pm0.005$ $R_\odot$, and $L_2=0.69\pm0.07$ $L_\odot$ for WASP 1814+48 B. The surface gravity of $\log g_2=5.098\pm0.026$ obtained from $M_2$ and $R_2$ is concurrent with 5.097$\pm$0.025 computed directly from the observable quantities. WASP 1814+48 B is well-matched with the 0.176 M$_\odot$ white dwarf (WD) evolutionary model for $Z=0.01$. The metallicity and our Galactic kinematics indicate that the program target is a thin-disk star. The whole light residuals after removal of the binary trend were analyzed and found to oscillate at a total of 52 frequencies. Among these, most of the low frequencies below 24 day$^{-1}$ are aliases and orbital harmonics. The five significant frequencies between 32 and 36 day$^{-1}$ are the pulsation modes of WASP 1814+48 A located in the $δ$ Sct domain on ZAMS, and the high frequencies of 128$-$288 day$^{-1}$ arise from WASP 1814+48 B in the pre-He WD instability strip. Our results reveal that WASP 1814+48 is the fifth EL CVn star that is composed of a $δ$ Sct-type primary and a pre-ELMV (extremely low-mass pre-He WD variable).
description: 16 pages, including 7 figures and 6 tables, accepted for publication in MNRAS
Robust Modeling of Unknown Dynamical Systems via Ensemble Averaged Learning
Creators: name: Churchill, Victor
name: Manns, Steve
name: Chen, Zhen
name: Xiu, Dongbin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Dynamical Systems (math.DS)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Recent work has focused on data-driven learning of the evolution of unknown systems via deep neural networks (DNNs), with the goal of conducting long time prediction of the evolution of the unknown system. Training a DNN with low generalization error is a particularly important task in this case as error is accumulated over time. Because of the inherent randomness in DNN training, chiefly in stochastic optimization, there is uncertainty in the resulting prediction, and therefore in the generalization error. Hence, the generalization error can be viewed as a random variable with some probability distribution. Well-trained DNNs, particularly those with many hyperparameters, typically result in probability distributions for generalization error with low bias but high variance. High variance causes variability and unpredictably in the results of a trained DNN. This paper presents a computational technique which decreases the variance of the generalization error, thereby improving the reliability of the DNN model to generalize consistently. In the proposed ensemble averaging method, multiple models are independently trained and model predictions are averaged at each time step. A mathematical foundation for the method is presented, including results regarding the distribution of the local truncation error. In addition, three time-dependent differential equation problems are considered as numerical examples, demonstrating the effectiveness of the method to decrease variance of DNN predictions generally.
Early Neoproterozoic magmatism and Caledonian metamorphism recorded by the Mårma Terrane, Seve Nappe Complex, northern Swedish Caledonides
Creators: name: Callegari, Riccardo
name: Kośmińska, Karolina
name: Barnes, Christopher J.
name: Klonowska, Iwona
name: Barker, Abigail K.
name: Rousku, Sabine
name: Nääs, Erika
name: Kooijman, Ellen
name: Witt-Nilsson, Patrik
name: Majka, Jarosław
Publisher: name: Geological Society of London
Year: 2023
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Figure S3. A T-XH2O pseudosection for sample KB17-14b. The calculated phase diagram (T-XH2O) indicates a value of H2O around 1 wt.% (yellow star).
On the nature of photospheric horizontal magnetic field increase in major solar flares
Creators: name: Liu, Lijuan
name: Zhou, Zhenjun
name: Wang, Yuming
name: Sun, Xudong
name: Wang, Guoqiang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Rapid increase of horizontal magnetic field ($B_h$) around the flaring polarity inversion line is the most prominent photospheric field change during flares. It is considered to be caused by the contraction of flare loops, the details behind which is still not fully understood. Here we investigate the $B_h$-increase in 35 major flares using HMI high-cadence vector magnetograms. We find that $B_h$-increase is always accompanied by the increase of field inclination. It usually initiates near the flare ribbons, showing step-like change in between the ribbons. In particular, its evolution in early flare phase shows close spatio-temporal correlation to flare ribbons. We further find that $B_h$-increase tends to have similar intensity in confined and eruptive flares, but larger spatial-extent in eruptive flares in a statistical sense. Its intensity and timescale have inverse and positive correlations to the initial ribbon separations, respectively. The results altogether are well consistent with a recent proposed scenario which suggests that the reconnection-driven contraction of flare loops enhances photospheric $B_h$ according to the ideal induction equation, providing statistical evidence to the reconnection-driven origin for $B_h$-increase for the first time.
description: 14 pages, 5 figures, 2 tables. Accepted for publication in ApJL
Early Neoproterozoic magmatism and Caledonian metamorphism recorded by the Mårma Terrane, Seve Nappe Complex, northern Swedish Caledonides
Creators: name: Callegari, Riccardo
name: Kośmińska, Karolina
name: Barnes, Christopher J.
name: Klonowska, Iwona
name: Barker, Abigail K.
name: Rousku, Sabine
name: Nääs, Erika
name: Kooijman, Ellen
name: Witt-Nilsson, Patrik
name: Majka, Jarosław
Publisher: name: Geological Society of London
Year: 2023
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Figure S2. A T-XH2O pseudosection for sample VST-10B. The yellow star indicates the value necessary to stabilize the observed mineral assemblage (around 0.25 wt.%).
Lithofacies assemblages and boundary relationships of the Tertiary Latrobe Valley group and overlying strata in the Latrobe Valley, Victoria
Creators: name: Bolger, P. F.
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.
Exterior power operations on higher $K$-groups via binary complexes
Creators: name: Harris, Tom
name: Köck, Bernhard
name: Taelman, Lenny
Publisher: name: arXiv
Year: 2016
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 13D15, 14F99, 19D99, 19E08, 20G05

description: We use Grayson's binary multicomplex presentation of algebraic $K$-theory to give a new construction of exterior power operations on the higher $K$-groups of a (quasi-compact) scheme. We show that these operations satisfy the axioms of a $λ$-ring, including the product and composition laws. To prove the composition law we show that the Grothendieck group of the exact category of integral polynomial functors is the universal $λ$-ring on one generator.
description: 35 pages; v2: reference to a correspondence between Deligne and Grothendieck added; v3: referee's comments incorporated, to appear in Annals of K-Theory
Optomechanical dual-beam backaction-evading measurement beyond the rotating-wave approximation
Creators: name: Malz, Daniel
name: Nunnenkamp, Andreas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present the exact analytical solution of the explicitly time-periodic quantum Langevin equation describing the dual-beam backaction-evasion measurement of a single mechanical oscillator quadrature due to Braginsky, Vorontsov and Thorne beyond the commonly used rotating-wave approximation. We show that counterrotating terms lead to extra sidebands in the optical and mechanical spectra and to a modification of the main peak. Physically, the backaction of the measurement is due to periodic coupling of the mechanical resonator to a light field quadrature that only contains cavity-filtered shot noise. Since this fact is independent of other degrees of freedom the resonator might be coupled to, our solution can be generalized, including to dissipatively or parametrically squeezed oscillators, as well as recent two-mode backaction evasion measurements.
description: 10 pages, 3 figures. v2: Title change, minor typos
Canonical formulation and path integral for local vacuum energy sequestering
Creators: name: Bufalo, R.
name: Klusoň, J.
name: Oksanen, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We establish the Hamiltonian analysis and the canonical path integral for a local formulation of vacuum energy sequestering. In particular, by considering the state of the universe as a superposition of vacuum states corresponding to different values of the cosmological and gravitational constants, the path integral is extended to include integrations over the cosmological and gravitational constants. The result is an extension of the Ng-van Dam form of the path integral of unimodular gravity. It is argued to imply a relation between the fraction of the most likely values of the gravitational and cosmological constants and the average values of the energy density and pressure of matter over spacetime. Finally, we construct and analyze a BRST-exact formulation of the theory, which can be considered as a topological field theory.
description: 30 pages, V2: Version published in PRD
SWAG Newsletter (June, 1979)
Creators: name: Group, Victoria Status Of Women Action
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Women's rights
valueUri: http://id.worldcat.org/fast/1178818
subject: Women--Economic conditions
valueUri: http://id.worldcat.org/fast/1176665
subject: Women--Legal status, laws, etc.
valueUri: http://id.worldcat.org/fast/1176824
subject: Women--Societies and clubs
valueUri: http://id.worldcat.org/fast/1176970
subject: Women--Employment--Law and legislation
valueUri: http://id.worldcat.org/fast/1176724
subject: Women--Social conditions
valueUri: http://id.worldcat.org/fast/1176947
subject: Sex discrimination against women
valueUri: http://id.worldcat.org/fast/1114376
subject: Women
valueUri: http://id.worldcat.org/fast/1176568
subject: Feminism
valueUri: http://id.worldcat.org/fast/922671

description: The Victoria chapter of the Status of Women Action Group (SWAG) was formed in 1971 in response to the 1970 Report of the Royal Commission on the Status of Women. SWAG is a feminist organization that promotes economic, political and social equality and freedom for women. It is a non-profit society with several committees working on specific issues of concern to women. The group is an active member of the BC and Yukon Association of Women's Centres and the National Action Committee on the Status of Women.