cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Antiferromagnetic multi-level memristor using linear magnetoelectricity
Creators: name: Chang, Y. T.
name: Wang, J. F.
name: Wang, W.
name: Liu, C. B.
name: You, B.
name: Liu, M. F.
name: Zheng, S. H.
name: Shi, M. Y.
name: Lu, C. L.
name: Liu, J. -M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The explosive growth of artificial intelligence and data-intensive computing has brought crucial challenge to modern information science and technology, i.e. conceptually new devices with superior properties are urgently desired. Memristor is recognized as a very promising circuit element to tackle the barriers, because of its fascinating advantages in imitating neural network of human brain, and thus realizing in-memory computing. However, there exist two core and fundamental issues: energy efficiency and accuracy, owing to the electric current operation of traditional memristors. In the present work, we demonstrate a new type of memristor, i.e. charge q and magnetic flux ϕ space memristor, enabled by linear magnetoelectricity of Co4Nb2O9. The memory states show distinctly linear magnetoelectric coefficients with a large ratio of about 10, ensuing exceptional accuracy of related devices. The present q-ϕ type memristor can be manipulated by magnetic and electric fields without involving electric current, paving the way to develop ultralow-energy-consuming devices. In the meanwhile, it is worth to mention that Co4Nb2O9 hosts an intrinsic compensated antiferromagnetic structure, which suggests interesting possibility of further integrating the unique merits of antiferromagnetic spintronics such as ultrahigh density and ultrafast switching. Linear magnetoelectricity is proposed to essential to the q-ϕ type memristor, which would be accessible in a broad class of multiferroics and other magnetoelectric materials such as topological insulators. Our findings could therefore advance memristors towards new levels of functionality.
description: 4 figures
Foreword
Creators: name: Bartalesi, Lorenzo
name: Portera, Mariagrazia
Publisher: name: Aisthesis. Pratiche, linguaggi e saperi dell’estetico
Year: 2019

description: Aisthesis. Pratiche, linguaggi e saperi dell’estetico, Vol. 12 No. 1 (2019): From the aesthetic mind to the symbolic mind
Anisotropic collisions of dipolar Bose-Einstein condensates in the universal regime
Creators: name: Burdick, Nathaniel Q.
name: Sykes, Andrew G.
name: Tang, Yijun
name: Lev, Benjamin L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report the measurement of collisions between two Bose-Einstein condensates with strong dipolar interactions. The collision velocity is significantly larger than the internal velocity distribution widths of the individual condensates, and thus, with the condensates being sufficiently dilute, a halo corresponding to the two-body differential scattering cross section is observed. The results demonstrate a novel regime of quantum scattering, relevant to dipolar interactions, in which a large number of angular momentum states become coupled during the collision. We perform Monte-Carlo simulations to provide a detailed comparison between theoretical two-body cross sections and the experimental observations.
description: 10 pages, 5 figures
Parametric Auto-Excitation of Magnetic Droplet Soliton Perimeter Modes
Creators: name: Xiao, D.
name: Tiberkevich, V.
name: Liu, Y. H.
name: Liu, Y. W.
name: Mohseni, S. M.
name: Chung, S.
name: Ahlberg, M.
name: Slavin, A. N.
name: Åkerman, J.
name: Zhou, Yan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent experiments performed in current-driven nano-contacts with strong perpendicular anisotropy have shown that spin-transfer torque can drive self-localized spin waves [1, 2] that above a certain threshold intensity can condense into a highly nonlinear magnetodynamic and nano-sized state known as a magnetic droplet soliton [3]. Here we demonstrate analytically, numerically, and experimentally that at sufficiently large driving currents, and for a spin polarization that is tilted away from the film normal, the circular droplet soliton can become unstable to periodic excitations of its perimeter. We furthermore show that these perimeter excitation modes (PEMs) are parametrically excited when the fundamental droplet soliton precession frequency is close to twice the frequency of one or more of the PEMs. As a consequence, for increasing applied fields, progressively higher PEMs can be excited. Quantitative agreement with experiment confirms this picture.
description: Submitted to PRB
Technology in the primary curriculum : a teacher's perceptions and students' learning
Creators: name: Jane, Beverley Lois
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 Reference field.
Mitigating Quantum Errors via Truncated Neumann Series
Creators: name: Wang, Kun
name: Chen, Yu-Ao
name: Wang, Xin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Quantum gates and measurements on quantum hardware are inevitably subject to hardware imperfections that lead to quantum errors. Mitigating such unavoidable errors is crucial to explore the power of quantum hardware better. In this paper, we propose a unified framework that can mitigate quantum gate and measurement errors in computing quantum expectation values utilizing the truncated Neumann series. The essential idea is to cancel the effect of quantum error by approximating its inverse via linearly combining quantum errors of different orders produced by sequential applications of the quantum devices with carefully chosen coefficients. Remarkably, the estimation error decays exponentially in the truncated order, and the incurred error mitigation overhead is independent of the system size, as long as the noise resistance of the quantum device is moderate. We numerically test this framework for different quantum errors and find that the computation accuracy is substantially improved. Our framework possesses several vital advantages: it mitigates quantum gate and measurement errors in a unified manner, it neither assumes any error structure nor requires the tomography procedure to completely characterize the quantum errors, and most importantly, it is scalable. These advantages empower our quantum error mitigation framework to be efficient and practical and extend the ability of near-term quantum devices to deliver quantum applications.
description: Enhanced version of arXiv:2103.13856, propose a unified framework that can mitigate quantum gate and measurement errors utilizing the truncated Neumann series
LOFAR VLBI Studies at 55 MHz of 4C 43.15, a z=2.4 Radio Galaxy
Creators: name: Morabito, Leah K.
name: Deller, Adam T.
name: Röttgering, Huub
name: Miley, George
name: Varenius, Eskil
name: Shimwell, Timothy W.
name: Moldón, Javier
name: Jackson, Neal
name: Morganti, Raffaella
name: van Weeren, Reinout J.
name: Oonk, J. B. R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The correlation between radio spectral index and redshift has been exploited to discover high redshift radio galaxies, but its underlying cause is unclear. It is crucial to characterise the particle acceleration and loss mechanisms in high redshift radio galaxies to understand why their radio spectral indices are steeper than their local counterparts. Low frequency information on scales of $\sim$1 arcsec are necessary to determine the internal spectral index variation. In this paper we present the first spatially resolved studies at frequencies below 100 MHz of the $z = 2.4$ radio galaxy 4C 43.15 which was selected based on its ultra-steep spectral index ($α< -1$; $S_ν \sim ν^α$ ) between 365 MHz and 1.4 GHz. Using the International Low Frequency Array (LOFAR) Low Band Antenna we achieve sub-arcsecond imaging resolution at 55 MHz with VLBI techniques. Our study reveals low-frequency radio emission extended along the jet axis, which connects the two lobes. The integrated spectral index for frequencies $
description: 14 pages; 9 figures; 4 tables; Accepted for publication in MNRAS
Letter from J. R. Ackerley to John Betjeman, November 14, 1938
Creators: name: Ackerley, J. R. (Joe Randolph), 1896-1967
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Plomer, William, 1903-1973
valueUri: http://id.worldcat.org/fast/32868
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Ackerley, J. R. (Joe Randolph), 1896-1967
valueUri: http://id.worldcat.org/fast/12552
subject: Television journalists
valueUri: http://id.worldcat.org/fast/1146949
subject: Modernism (Literature)
valueUri: http://id.worldcat.org/fast/1024455
subject: Betjeman, John, 1906-1984
valueUri: http://id.worldcat.org/fast/1427507
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Authors
valueUri: http://id.worldcat.org/fast/821688

description: Part of a collection of letters to John Betjeman from Joe Randolph "J. R." Ackerley (writer and literary editor of the BBC's weekly magazine The Listener, and open homosexual). Ackerley writes that he and William Plomer (novelist, poet, and literary editor) enjoyed his poem "Sir John Piers". Ackerley is not sure if Betjeman is suggesting it for The Listener. He notes that a rival weekly received something from Betjeman, so he suggests a Christmas poem from him.
Interpretable and Fair Boolean Rule Sets via Column Generation
Creators: name: Lawless, Connor
name: Dash, Sanjeeb
name: Gunluk, Oktay
name: Wei, Dennis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This paper considers the learning of Boolean rules in disjunctive normal form (DNF, OR-of-ANDs, equivalent to decision rule sets) as an interpretable model for classification. An integer program is formulated to optimally trade classification accuracy for rule simplicity. We also consider the fairness setting and extend the formulation to include explicit constraints on two different measures of classification parity: equality of opportunity and equalized odds. Column generation (CG) is used to efficiently search over an exponential number of candidate rules without the need for heuristic rule mining. To handle large data sets, we propose an approximate CG algorithm using randomization. Compared to three recently proposed alternatives, the CG algorithm dominates the accuracy-simplicity trade-off in 8 out of 16 data sets. When maximized for accuracy, CG is competitive with rule learners designed for this purpose, sometimes finding significantly simpler solutions that are no less accurate. Compared to other fair and interpretable classifiers, our method is able to find rule sets that meet stricter notions of fairness with a modest trade-off in accuracy.
description: arXiv admin note: substantial text overlap with arXiv:2107.01325, arXiv:1805.09901
Revisiting Connes' Finite Spectral Distance on Non-commutative Spaces : Moyal Plane and Fuzzy Sphere
Creators: name: Devi, Yendrembam Chaoba
name: Patil, Alpesh
name: Bose, Aritra N
name: Kumar, Kaushlendra
name: Chakraborty, Biswajit
name: Scholtz, Frederik G
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We revise and extend the algorithm provided in [1] to compute the finite Connes' distance between normal states. The original formula in [1] contains an error and actually only provides a lower bound. The correct expression, which we provide here, involves the computation of the infimum of an expression which involves the "transverse" component of the algebra element in addition to the "longitudinal" component of [1]. This renders the formula less user-friendly, as the determination of the exact transverse component for which the infimum is reached remains a non-trivial task, but under rather generic conditions it turns out that the Connes' distance is proportional to the trace norm of the difference in the density matrices, leading to considerable simplification. In addition, we can determine an upper bound of the distance by emulating and adapting the approach of [2] in our Hilbert-Schmidt operatorial formulation. We then look for an optimal element for which the upper bound is reached. We are able to find one for the Moyal plane through the limit of a sequence obtained by finite dimensional projections of the representative of an element belonging to a multiplier algebra, onto the subspaces of the total Hilbert space, occurring in the spectral triple and spanned by the eigen-spinors of the respective Dirac operator. This is in contrast with the fuzzy sphere, where the upper bound, which is given by the geodesic of a commutative sphere is never reached for any finite $n$-representation of $SU(2)$. Indeed, for the case of maximal non-commutativity ($n = 1/2$), the finite distance is shown to coincide exactly with the above mentioned lower bound, with the transverse component playing no role. This, however starts changing from $n=1$ onwards and we try to improve the estimate of the finite distance and provide an almost exact result, using our new and modified algorithm.
description: 33 pages, 2 figures
A class history of the Victorian secondary teaching occupation
Creators: name: Isaacs, Dallas
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 Reference field.
Polarization-path-frequency entanglement using interferometry and frequency shifters
Creators: name: Majumdar, Mrittunjoy Guha
name: Chandrashekar, C. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Higher dimensional Hilbert space along with ability to control multiple degrees of freedom of photon and entangle them has enabled new quantum protocols for various quantum information processing applications. Here, we propose a scheme to generate and control polarization-path frequency entanglement using the operative elements required to implement a polarization-controlled quantum walk in the path(position) space and frequency domain. Hyperentangled states manifests in the controlled dynamics using an interferometric setup where half-wave plates, beam-splitters and frequency shifters such as those based on the electro-optic effect are used to manipulate the polarization, path and frequency degrees of freedom respectively. The emphasis is on utilizing the polarization to influence the movement to a specific value in the frequency and position space. Negativity between the subspaces is calculated to demonstrate the controllability of the entanglement between them. Progress reported with experimental demonstration of realization of quantum walk using quantum states of light makes quantum walks a practical approach to generate hyperentangled states.
Letter from J. R. Ackerley to John Betjeman, July 18, 1939
Creators: name: Ackerley, J. R. (Joe Randolph), 1896-1967
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Ackerley, J. R. (Joe Randolph), 1896-1967
valueUri: http://id.worldcat.org/fast/12552
subject: Smith, H. Llewellyn (Hubert Llewellyn), 1864-1945
valueUri: http://id.worldcat.org/fast/1456074
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Betjeman, John, 1906-1984
valueUri: http://id.worldcat.org/fast/1427507
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Modernism (Literature)
valueUri: http://id.worldcat.org/fast/1024455
subject: Television journalists
valueUri: http://id.worldcat.org/fast/1146949
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172

description: Part of a collection of letters to John Betjeman from Joe Randolph "J. R." Ackerley (writer and literary editor of the BBC's weekly magazine The Listener, and open homosexual). Ackerley asks Betjeman if he is interested in reviewing the book "History of East London from the earliest times to the end of the eighteenth century" by Sir Hubert Llewellyn Smith.
PLACE dropout: A Progressive Layer-wise and Channel-wise Dropout for Domain Generalization
Creators: name: Guo, Jintao
name: Qi, Lei
name: Shi, Yinghuan
name: Gao, Yang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Domain generalization (DG) aims to learn a generic model from multiple observed source domains that generalizes well to arbitrary unseen target domains without further training. The major challenge in DG is that the model inevitably faces a severe overfitting issue due to the domain gap between source and target domains. To mitigate this problem, some dropout-based methods have been proposed to resist overfitting by discarding part of the representation of the intermediate layers. However, we observe that most of these methods only conduct the dropout operation in some specific layers, leading to an insufficient regularization effect on the model. We argue that applying dropout at multiple layers can produce stronger regularization effects, which could alleviate the overfitting problem on source domains more adequately than previous layer-specific dropout methods. In this paper, we develop a novel layer-wise and channel-wise dropout for DG, which randomly selects one layer and then randomly selects its channels to conduct dropout. Particularly, the proposed method can generate a variety of data variants to better deal with the overfitting issue. We also provide theoretical analysis for our dropout method and prove that it can effectively reduce the generalization error bound. Besides, we leverage the progressive scheme to increase the dropout ratio with the training progress, which can gradually boost the difficulty of training the model to enhance its robustness. Extensive experiments on three standard benchmark datasets have demonstrated that our method outperforms several state-of-the-art DG methods. Our code is available at https://github.com/lingeringlight/PLACEdropout.
description: Accepted by ACM TOMM 2023. The code is available at https://github.com/lingeringlight/PLACEdropout
Sentiment Analysis and Effect of COVID-19 Pandemic using College SubReddit Data
Creators: name: Yan, Tian
name: Liu, Fang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Computers and Society (cs.CY)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Background: The COVID-19 pandemic has affected our society and human well-being in various ways. In this study, we investigate how the pandemic has influenced people's emotions and psychological states compared to a pre-pandemic period using real-world data from social media. Method: We collected Reddit social media data from 2019 (pre-pandemic) and 2020 (pandemic) from the subreddits communities associated with eight universities. We applied the pre-trained Robustly Optimized BERT pre-training approach (RoBERTa) to learn text embedding from the Reddit messages, and leveraged the relational information among posted messages to train a graph attention network (GAT) for sentiment classification. Finally, we applied model stacking to combine the prediction probabilities from RoBERTa and GAT to yield the final classification on sentiment. With the model-predicted sentiment labels on the collected data, we used a generalized linear mixed-effects model to estimate the effects of pandemic and in-person teaching during the pandemic on sentiment. Results: The results suggest that the odds of negative sentiments in 2020 (pandemic) were 25.7% higher than the odds in 2019 (pre-pandemic) with a $p$-value $<0.001$; and the odds of negative sentiments associated in-person learning were 48.3% higher than with remote learning in 2020 with a $p$-value of 0.029. Conclusions: Our study results are consistent with the findings in the literature on the negative impacts of the pandemic on people's emotions and psychological states. Our study contributes to the growing real-world evidence on the various negative impacts of the pandemic on our society; it also provides a good example of using both ML techniques and statistical modeling and inference to make better use of real-world data.
Kinematical evolution of tidally limited star clusters: the role of retrograde stellar orbits
Creators: name: Tiongco, Maria
name: Vesperini, Enrico
name: Varri, Anna Lisa
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The presence of an external tidal field often induces significant dynamical evolutionary effects on the internal kinematics of star clusters. Previous studies investigating the restricted three-body problem with applications to star cluster dynamics have shown that unbound stars on retrograde orbits (with respect to the direction of the cluster's orbit) are more stable against escape than prograde orbits, and predicted that a star cluster might acquire retrograde rotation through preferential escape of stars on prograde orbits. In this study we present evidence of this prediction, but we also illustrate that there are additional effects that cannot be accounted for by the preferential escape of prograde orbits alone. Specifically, in the early evolution, initially underfilling models increase their fraction of retrograde stars without losing significant mass, and acquire a retrograde angular velocity. We attribute this effect to the development of preferentially eccentric/radial orbits in the outer regions of star clusters as they are expanding into their tidal limitation. We explore the implications of the evolution of the fraction of prograde and retrograde stars for the evolution of the cluster internal rotation, and its dependence on the initial structural properties. Although all the systems studied here evolve towards an approximately solid-body internal rotation with angular velocity equal to about half of the angular velocity of the cluster orbital motion around the host galaxy, the evolutionary history of the radial profile of the cluster internal angular velocity depends on the cluster initial structure.
description: 10 pages, 11 figures, accepted for publication in MNRAS
Fragmentation Functions of neutral mesons $π^0$ and $k ^0$ with Laplace transform approach
Creators: name: Taghavi-Shahri, F.
name: Tehrani, S. Atashbar
name: Zare, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: With an analytical solutions of DGLAP evolution equations based on the Laplace transform method , we find the fragmentation functions (FFs) of neutral mesons, $π^0$ and $k ^0$ at NLO approximation. We also calculated the total fragmentation functions of these mesons and compared them with experimental data and those from global fits. The results show a good agreements between our solutions and other models and also are compatible with experimental data.
description: 17 Pages, 4 Figures
Letter from J. R. Ackerley to John Betjeman, December 08, 1939
Creators: name: Ackerley, J. R. (Joe Randolph), 1896-1967
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Modernism (Literature)
valueUri: http://id.worldcat.org/fast/1024455
subject: Ackerley, J. R. (Joe Randolph), 1896-1967
valueUri: http://id.worldcat.org/fast/12552
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Betjeman, John, 1906-1984
valueUri: http://id.worldcat.org/fast/1427507
subject: Television journalists
valueUri: http://id.worldcat.org/fast/1146949

description: Part of a collection of letters to John Betjeman from Joe Randolph "J. R." Ackerley (writer and literary editor of the BBC's weekly magazine The Listener, and open homosexual). Ackerley asks Betjeman for a Christmas poem that he could possibly use for The Listener.
Detection of quantitative trait loci controlling fiber content and pod length in yardlong bean by SNP molecular marker
Creators: name: Patiruj Jirakranwong And Orn-U-Ma Tanadul
Publisher: name: Faculty of Agriculture
Year: 2020
Subjects: Yardlong bean, DArTseq, fiber, genetic map

description: Khon Kaen Agriculture Journal, 48, 3, 461-470
Shear viscosity and Stokes-Einstein violation in supercooled light and heavy water
Creators: name: Ragueneau, Pierre
name: Caupin, Frédéric
name: Issenmann, Bruno
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report shear viscosity of heavy water supercooled $33\,\mathrm{K}$ below its melting point, revealing a 15-fold increase compared to room temperature. We also confirm our previous data for the viscosity of supercooled light water, and reach a better accuracy. Our measurements, based on the spontaneous Brownian motion of $350\,\mathrm{nm}$ spheres, disagree at the lowest temperature with the only other available data, based on Poiseuille flow in a narrow capillary, which may have been biased by electro-osmotic effects. The viscosity ratio between the two isotopes reaches 2.2 at the lowest temperature. A companion Letter [F. Caupin, P. Ragueneau, and B. Issenmann, arXiv:2112.09010] discusses this giant dynamic isotopic effect. Here we provide a detailed description of the experiment and its analysis. We review the literature data about dynamic properties of water (viscosity, self-diffusion coefficient, and rotational correlation time), discuss their temperature dependence and compare their decoupling in the two isotopes.
description: 21 pages, 21 figures, 14 tables + supplemental material with 8 pages and 2 tables. Modified Fig. 19, added Sections V.D, V.E, and SM.I
Chromospheric polarimetry through multi-line observations of the 850 nm spectral region
Creators: name: Noda, C. Quintero
name: Shimizu, T.
name: Katsukawa, Y.
name: Rodriguez, J. de la Cruz
name: Carlsson, M.
name: Anan, T.
name: Oba, T.
name: Ichimoto, K.
name: Suematsu, Y.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Future solar missions and ground-based telescopes aim to understand the magnetism of the solar chromosphere. We performed a supporting study in Quintero Noda et al. (2016) focused on the infrared Ca II 8542 A line and we concluded that is one of the best candidates because it is sensitive to a large range of atmospheric heights, from the photosphere to the middle chromosphere. However, we believe that it is worth to try improving the results produced by this line observing additional spectral lines. In that regard, we examined the neighbour solar spectrum looking for spectral lines that could increase the sensitivity to the atmospheric parameters. Interestingly, we discovered several photospheric lines that greatly improve the photospheric sensitivity to the magnetic field vector. Moreover, they are located close to a second chromospheric line that also belongs to the Ca II infrared triplet, i.e. the Ca II 8498 A line, and enhances the sensitivity to the atmospheric parameters at chromospheric layers. We conclude that the lines in the vicinity of the Ca II 8542 A line not only increase its sensitivity to the atmospheric parameters at all layers, but also they constitute an excellent spectral window for chromospheric polarimetry.
description: 11 pages, 8 figures, 1 table
Letter from J. R. Ackerley to John Betjeman, January 1939-May 1939
Creators: name: Ackerley, J. R. (Joe Randolph), 1896-1967
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Television journalists
valueUri: http://id.worldcat.org/fast/1146949
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Ackerley, J. R. (Joe Randolph), 1896-1967
valueUri: http://id.worldcat.org/fast/12552
subject: Betjeman, John, 1906-1984
valueUri: http://id.worldcat.org/fast/1427507
subject: Modernism (Literature)
valueUri: http://id.worldcat.org/fast/1024455
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Authors
valueUri: http://id.worldcat.org/fast/821688

description: Part of a collection of letters to John Betjeman from Joe Randolph "J. R." Ackerley (writer and literary editor of the BBC's weekly magazine The Listener, and open homosexual). Ackerley writes on the cover of a copy of The Listener, and tells Betjeman that it is clearly a good book, but he will have to edit it down.
Effects of quantum fluctuations on the low-energy collective modes of two-dimensional superfluid Fermi gases from the BCS to the Bose Limit
Creators: name: Van Loon, Senne
name: de Melo, Carlos A. R. Sá
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate the effects of quantum fluctuations on the low-energy collective modes of two-dimensional (2D) $s$-wave Fermi superfluids from the BCS to the Bose limit. We compare our results to recent Bragg scattering experiments in 2D box potentials, with very good agreement. We show that quantum fluctuations in the phase and modulus of the pairing order parameter are absolutely necessary to give physically acceptable chemical potential and dispersion relation of the low-energy collective mode throughout the BCS to Bose evolution. Furthermore, we demonstrate that the dispersion of the collective modes change from concave to convex as interactions are tuned from the BCS to the Bose regime, and never crosses the two-particle continuum, because arbitrarily small attractive interactions produce bound states in 2D.
description: 7 pages, 4 figures; supplemental material with 5 pages, 1 figure
Self-accelerating Parabolic Cylinder Waves in 1-D
Creators: name: Yuce, C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a new self-accelerating wave packet solution of the Schrodinger equation in one dimension. We obtain an exact analytical parabolic cylinder wave for the inverted harmonic potential. We show that truncated parabolic cylinder waves exhibits their accelerating feature.
High-order accurate finite-volume formulations for the pressure gradient force in layered ocean models
Creators: name: Engwirda, Darren
name: Kelley, Maxwell
name: Marshall, John
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The development of a set of high-order accurate finite-volume formulations for evaluation of the pressure gradient force in layered ocean models is described. A pair of new schemes are presented, both based on an integration of the contact pressure force about the perimeter of an associated momentum control-volume. The two proposed methods differ in their choice of control-volume geometries. High-order accurate numerical integration techniques are employed in both schemes to account for non-linearities in the underlying equation-of-state definitions and thermodynamic profiles, and details of an associated vertical interpolation and quadrature scheme are discussed in detail. Numerical experiments are used to confirm the consistency of the two formulations, and it is demonstrated that the new methods maintain hydrostatic and thermobaric equilibrium in the presence of strongly-sloping layer-wise geometry, non-linear equation-of-state definitions and non-uniform vertical stratification profiles. Additionally, one scheme is shown to maintain high levels of consistency in the presence of non-linear thermodynamic stratification. Use of the new pressure gradient force formulations for hybrid vertical coordinate and/or terrain-following general circulation models is discussed.
Scalar Triplet Leptogenesis with a CP violating phase
Creators: name: Chongdar, Sreerupa
name: Mishra, Sasmita
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study baryogenesis through leptogenesis via decay of triplet scalars embedded in the Standard Model. We consider two triplets scenario where the vacuum expectation value developed by one of the triplets is complex. The coupling of the triplet Higgs with the Standard Model leptons and Higgs scalar allows two decay channels, with branching ratios $B_L$ and $B_ϕ$, respectively. It is known that the hierarchy between the two branching ratios ($B_L \gg B_ϕ$ or $B_ϕ\gg B_L$), is sensitive to the generation of adequate CP violation and efficiency of leptogenesis. Working in a hierarchical limit of branching ratios and requiring adequate CP violation, we find the mass of the lightest triplet can be as low as $1 \times 10^{10}$ GeV. In the temperature regime $\left[ 10^{9}, 10^{12} \right]$ GeV, flavor effects, especially two-flavor effects become important in the study of leptogenesis. In two-flavored regime we study flavor effects in leptogenesis. It is observed that adequate baryon asymmetry can not be obtained for purely flavored leptogenesis, which corresponds to the hierarchical branching ratios, $B_L \gg B_ϕ$. But the hierarchy in the other way $B_ϕ\gg B_L$ still allows successful baryogenesis through leptogenesis. The phase of the complex vacuum expectation value of the triplet scalar is constrained by requiring non-zero CP violation. Considering the mass scale of triplet scalars as TeV scale, we also study resonant leptogenesis in the light of TeV scale physics.
description: Matches with the published version
An evaluation of the self-concept of children perceived as having speech and/or language difficulties, and its relevance to their social, emotional and educational development
Creators: name: Humphris, Marie Patricia
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 Reference field.
A FEAST SVDsolver based on Chebyshev--Jackson series for computing partial singular triplets of large matrices
Creators: name: Jia, Zhongxiao
name: Zhang, Kailiang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65F15, 15A18, 65F50

description: The FEAST eigensolver is extended to the computation of the singular triplets of a large matrix $A$ with the singular values in a given interval. The resulting FEAST SVDsolver is subspace iteration applied to an approximate spectral projector of $A^TA$ corresponding to the desired singular values in a given interval, and constructs approximate left and right singular subspaces corresponding to the desired singular values, onto which $A$ is projected to obtain Ritz approximations. Differently from a commonly used contour integral-based FEAST solver, we propose a robust alternative that constructs approximate spectral projectors by using the Chebyshev--Jackson polynomial series, which are symmetric positive semi-definite with the eigenvalues in $[0,1]$. We prove the pointwise convergence of this series and give compact estimates for pointwise errors of it and the step function that corresponds to the exact spectral projector. We present error bounds for the approximate spectral projector and reliable estimates for the number of desired singular triplets, establish numerous convergence results on the resulting FEAST SVDsolver, and propose practical selection strategies for determining the series degree and for reliably determining the subspace dimension. The solver and results on it are directly applicable or adaptable to the real symmetric and complex Hermitian eigenvalue problem. Numerical experiments illustrate that our FEAST SVDsolver is at least competitive with and is much more efficient than the contour integral-based FEAST SVDsolver when the desired singular values are extreme and interior ones, respectively, and it is also more robust than the latter.
description: 33, 5 figures
Postcard from J. R. Ackerley to John Betjeman, September 29, 1939
Creators: name: Ackerley, J. R. (Joe Randolph), 1896-1967
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Television journalists
valueUri: http://id.worldcat.org/fast/1146949
subject: Ackerley, J. R. (Joe Randolph), 1896-1967
valueUri: http://id.worldcat.org/fast/12552
subject: Betjeman, John, 1906-1984
valueUri: http://id.worldcat.org/fast/1427507
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Modernism (Literature)
valueUri: http://id.worldcat.org/fast/1024455
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778

description: Part of a collection of letters to John Betjeman from Joe Randolph "J. R." Ackerley (writer and literary editor of the BBC's weekly magazine The Listener, and open homosexual). Ackerley invites Betjeman to lunch the next time he is in town, and asks whether he has any poem he can use for The Listener.
Efficiency of Organic Fertilizer Production from Swiftlet Faeces Using Earthworms Eudrilus eugeniae
Creators: name: Panutda Jhajang, Chotirat Srikluan
Publisher: name: Faculty of Agriculture
Year: 2020
Subjects: Eudrilus eugeniae, Organic fertilizer, Swiftlet faeces

description: Khon Kaen Agriculture Journal, 48, 3, 471-482
Bundle Theoretic Descriptions of Massive Single-Particle State Spaces; With a view toward Relativistic Quantum Information Theory
Creators: name: Lee, Heon
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81P99, 81Q99, 83A99

description: Relativistic Quantum Information Theory (RQI) is a flourishing research area of physics, yet, there has been no systematic mathematical treatment of the field. In this paper, we suggest bundle theoretic descriptions of massive single-particle state spaces, which are basic building blocks of RQI. In the language of bundle theory, one can construct a vector bundle over the set of all possible motion states of a massive particle, in whose fibers the moving particle's internal quantum state as perceived by a fixed inertial observer is encoded. A link between the usual Hilbert space description is provided by a generalized induced representation construction on the $L^2$-section space of the bundle. The aim of this paper is two-fold. One is to communicate the basic ideas of RQI to mathematicians and the other is to suggest an improved formalism for single-particle state spaces that encompasses all known massive particles including those which have never been dealt with in the RQI literature. Some of the theoretical implications of the formalism will be explored at the end of the paper.
description: This is the Accepted Manuscript version of an article accepted for publication in [Journal of Physics A: Mathematical and Theoretical]. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at [https://dx.doi.org/10.1088/1751-8121/aca5d4]
Searching for Scatterers: High-Contrast Imaging of Young Stars Hosting Wide-Separation Planetary-Mass Companions
Creators: name: Bryan, Marta L.
name: Bowler, Brendan P.
name: Knutson, Heather A.
name: Kraus, Adam L.
name: Hinkley, Sasha
name: Mawet, Dimitri
name: Nielsen, Eric L.
name: Blunt, Sarah C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We have conducted an angular differential imaging survey with NIRC2 at Keck in search of close-in substellar companions to a sample of seven systems with confirmed planetary-mass companions (PMCs) on wide orbits (>50 AU). These wide-separation PMCs pose significant challenges to all three possible formation mechanisms: core accretion plus scattering, disk instability, and turbulent fragmentation. We explore the possibility that these companions formed closer in and were scattered out to their present-day locations by searching for other massive bodies at smaller separations. The typical sensitivity for this survey is ΔK ~ 12.5 at 1". We identify eight candidate companions, whose masses would reach as low as one Jupiter mass if gravitationally bound. From our multi-epoch astrometry we determine that seven of these are conclusively background objects, while the eighth near DH Tau is ambiguous and requires additional monitoring. We rule out the presence of >7 M$_{\rm Jup}$ bodies in these systems down to 15 - 50 AU that could be responsible for scattering. This result combined with the totality of evidence suggests that dynamical scattering is unlikely to have produced this population of PMCs. We detect orbital motion from the companions ROXs 42B b and ROXs 12 b, and from this determine 95% upper limits on the companions' eccentricities of 0.58 and 0.83 respectively. Finally, we find that the 95% upper limit on the occurrence rate of additional planets with masses between 5 - 15 M$_{\rm Jup}$ outside of 40 AU in systems with PMCs is 54%.
description: Accepted to ApJ
From colonisation to bureaucratisation : the struggle for control of the Victorian mathematics curriculum
Creators: name: Horwood, John Francis
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 Reference field.
Letter from J. R. Ackerley to John Betjeman, December 20, 1939
Creators: name: Ackerley, J. R. (Joe Randolph), 1896-1967
Publisher: name: University of Victoria Libraries
Year: 2023
Subjects: subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Television journalists
valueUri: http://id.worldcat.org/fast/1146949
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Betjeman, John, 1906-1984
valueUri: http://id.worldcat.org/fast/1427507
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Ackerley, J. R. (Joe Randolph), 1896-1967
valueUri: http://id.worldcat.org/fast/12552
subject: Royal Commission on Historical Monuments (England)
valueUri: http://id.worldcat.org/fast/555259
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Modernism (Literature)
valueUri: http://id.worldcat.org/fast/1024455

description: Part of a collection of letters to John Betjeman from Joe Randolph "J. R." Ackerley (writer and literary editor of the BBC's weekly magazine The Listener, and open homosexual). Ackerley asks Betjeman if he would be interested in reviewing The Royal Commission on Historical Monuments' "The City of Oxford: a survey and inventory of its monuments".
Tessellating cushions: four-point functions in N=4 SYM
Creators: name: Eden, Burkhard
name: Sfondrini, Alessandro
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a class of planar tree-level four-point functions in N=4 SYM in a special kinematic regime: one BMN operator with two scalar excitations and three half-BPS operators are put onto a line in configuration space; additionally, for the half-BPS operators a co-moving frame is chosen in flavour space. In configuration space, the four-punctured sphere is naturally triangulated by tree-level planar diagrams. We demonstrate on a number of examples that each tile can be associated with a modified hexagon form-factor in such a way as to efficiently reproduce the tree-level four-point function. Our tessellation is not of the OPE type, fostering the hope of finding an independent, integrability-based approach to the computation of planar four-point functions.
description: 10 pages, 2 figures
Collection of the Article Novelties on the Study of Ethics-Sufism
Creators: name: Huda, Sokhi
Publisher: name: Zenodo
Year: 2022
Subjects: Article
Novelty
Ethics-Sufism

description: This novelties collection is an output that shines from article reviews on Ethics and Sufism published by scientific journals. This collection is the result of the "Ethics and Sufism" lecture at the Communication Science Study Program, Faculty of Da'wa and Communication, Sunan Ampel State Islamic University, Surabaya, Indonesia, on Odd Semester of 2022-2023. The reviewers are the students concerned in class E2. The presence of this collection marked the progress of student’s study since they were in the first semester in their S1 study range. This is a valuable achievement savings for them and can be an important rising ladder in their intellectual progress during the study period and at the next level of study.
description: Communication Science Study Program, Class E2, Odd Semester of 2022-2023 Faculty of Da'wa and Communication, Sunan Ampel State Islamic University, Surabaya, Indonesia