cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Parametrized constant-depth quantum neuron
Creators: name: de Carvalho, Jonathan H. A.
name: Neto, Fernando M. de Paula
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Emerging Technologies (cs.ET)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum computing has been revolutionizing the development of algorithms. However, only noisy intermediate-scale quantum devices are available currently, which imposes several restrictions on the circuit implementation of quantum algorithms. In this paper, we propose a framework that builds quantum neurons based on kernel machines, where the quantum neurons differ from each other by their feature space mappings. Besides contemplating previous schemes, our generalized framework can instantiate quantum neurons with other feature mappings. We present here a neuron that applies a tensor-product feature mapping to an exponentially larger space. The proposed neuron is implemented by a circuit of constant depth with a linear number of elementary single-qubit gates. The existing neuron applies a phase-based feature mapping with an exponentially expensive circuit implementation, even using multi-qubit gates. Additionally, the proposed neuron has parameters that can change its activation function shape. Here, we show the activation function shape of each quantum neuron. It turns out that parametrization allows the proposed neuron to optimally fit underlying patterns that the existing neuron cannot fit, as demonstrated in the toy problems addressed here. The feasibility of those quantum neuron solutions is also contemplated in the demonstration through executions on a quantum simulator. Finally, we compare those kernel-based quantum neurons in the problem of handwritten digit recognition, where the performances of quantum neurons that implement classical activation functions are also contrasted here. The repeated evidence of the parametrization potential achieved in real-life problems allows concluding that this work provides a quantum neuron with improved discriminative abilities. As a consequence, the generalized framework of quantum neurons can contribute toward practical quantum advantage.
description: Accepted version. 21 pages, 14 figures
(p,q)-Five Brane and (p,q)-String Solutions, their Bound State and its Near Horizon Limit
Creators: name: Kluson, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We determine (p,q)-string and (p,q)-five brane solutions of type IIB supergravity using SL(2,Z)-symmetry of the full type IIB superstring theory. We also determine SL(2,Z)-transformed solution corresponding to the bound state of NS5-branes and fundamental strings. Then we analyze its near horizon limit and we show that it leads to the AdS(3)xS(3) with mixed fluxes.
description: 23 pages
Phase diagram of the ground states of DNA condensates
Creators: name: Hoang, Trinh X.
name: Trinh, Hoa Lan
name: Giacometti, Achille
name: Podgornik, Rudolf
name: Banavar, Jayanth R.
name: Maritan, Amos
Publisher: name: arXiv
Year: 2015
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Phase diagram of the ground states of DNA in a bad solvent is studied for a semi-flexible polymer model with a generalized local elastic bending potential characterized by a nonlinearity parameter $x$ and effective self-attraction promoting compaction. $x=1$ corresponds to the worm-like chain model. Surprisingly, the phase diagram as well as the transition lines between the ground states are found to be a function of $x$. The model provides a simple explanation for the results of prior experimental and computational studies and makes predictions for the specific geometries of the ground states. The results underscore the impact of the form of the microscopic bending energy at macroscopic observable scales.
description: 5 pages, 5 figures, to appear in PRE Rapid Communication
Ion trap analogue of particle creation in black holes and cosmology
Creators: name: Fey, Christian
name: Schaetz, Tobias
name: Schützhold, Ralf
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the transversal modes of ions in a linear radio frequency (rf) trap where we control the time dependent axial confinement to show that we can excite quanta of motion via a two-mode squeezing process. This effect is analogous to phenomena predicted to occur during the evaporation of black holes and cosmological particle creation, in general out of reach for experimental investigation. As substantial advantage of this proposal in comparison to previous ones we propose to exploit radial and axial modes simultaneously to permit experimental access of these effects based on state-of-the-art technology. In addition, we propose to create and explore entanglement, starting with two ions, and relate the results to fundamental aspects of the entropy of black holes.
New bedside techniques utilising near infrared spectroscopy in preterm infants
Creators: name: Dr Flora Wong MBBS, FRACP.
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Daemonorops Blume
Creators: name: Henderson, Andrew
name: Dung, Nguyen Quoc
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Arecales
Arecaceae
Daemonorops

description: Daemonorops Blume in Roemer & Schultes (1830:1333)
Calamus fissilis Henderson et al. (2008: 192) and C. nuichuaensis Henderson et al. (2008: 196) were based on incomplete specimens. Recently we have collected more complete specimens of both species. These have the inflorescence rachis bracts splitting to the base and becoming deciduous, and fruits with ruminate endosperm. These two character states are not found in Calamus, but are common in Daemonorops, and therefore we transfer both these species to Daemonorops. Based on the deciduous, splitting rachis bracts, the two species appear to belong to section Piptoshatha Beccari (1911: 27).
description: Published as part of Henderson, Andrew & Dung, Nguyen Quoc, 2010, Notes on rattans (Arecaceae) from Vietnam, pp. 25-33 in Phytotaxa 8 on page 27, DOI: 10.11646/phytotaxa.8.1.2, http://zenodo.org/record/4893981
Enhancing Door-Status Detection for Autonomous Mobile Robots during Environment-Specific Operational Use
Creators: name: Antonazzi, Michele
name: Luperto, Matteo
name: Basilico, Nicola
name: Borghese, N. Alberto
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Door-status detection, namely recognizing the presence of a door and its status (open or closed), can induce a remarkable impact on a mobile robot's navigation performance, especially for dynamic settings where doors can enable or disable passages, changing the topology of the map. In this work, we address the problem of building a door-status detector module for a mobile robot operating in the same environment for a long time, thus observing the same set of doors from different points of view. First, we show how to improve the mainstream approach based on object detection by considering the constrained perception setup typical of a mobile robot. Hence, we devise a method to build a dataset of images taken from a robot's perspective and we exploit it to obtain a door-status detector based on deep learning. We then leverage the typical working conditions of a robot to qualify the model for boosting its performance in the working environment via fine-tuning with additional data. Our experimental analysis shows the effectiveness of this method with results obtained both in simulation and in the real-world, that also highlight a trade-off between costs and benefits of the fine-tuning approach.
Stern-Gerlach effect of multi-component ultraslow optical solitons via electromagnetically induced transparency
Creators: name: Chen, Zhiming
name: Huang, Guoxiang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a scheme to exhibit a Stern-Gerlach effect of n-component (n > 2) high-dimensional ultraslow optical solitons in a coherent atomic system with (n + 1)-pod level configuration via electromagnetically induced transparency (EIT). Based on Maxwell-Bloch equations, we derive coupled (3+1)-dimensional nonlinear Schrodinger equations governing the spatial-temporal evolution of n probe-field envelopes. We show that under EIT condition significant deflections of the n components of coupled ultraslow optical solitons can be achieved by using a Stern-Gerlach gradient magnetic field. The stability of the ultraslow optical solitons can be realized by an optical lattice potential contributed from a far-detuned laser field.
Prevalence and risk factors of chronic low back pain in university athletes: a cross-sectional study
Creators: name: Ansari, Sumbul
name: Sharma, Saurabh
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
classificationCode: 111714
subject: Mental Health

description: This study aimed to establish the prevalence of chronic low back pain (CLBP) in university-level athletes and to examine the influence of age, sex, body mass index (BMI), sports discipline, sleep, anxiety, and depression on CLBP. The secondary purpose was to check the association of certain variables in athletes having CLBP with the sports discipline and chronicity of LBP. A total of 340 players (100% response rate) from different sports, aged 18–30 years with at least 1 year of participation in sports at the university level were screened for the present study. The subjects completed a detailed, semi-structured questionnaire that gathered data regarding their demographic variables, personal and pain-related factors. The study was registered on the clinical trials registry, India (CTRI/2021/09/036675). The results revealed the sport-wise point prevalence as follows: cricket (18.5%), basketball (15.6%), volleyball (20.0%), football (11.4%), badminton (7.7%) and tennis (7.7%). A higher number of years at university-level participation (>4 years), smoking, anxiety and BMI (>25 kg/m2) are risk factors for CLBP. The type of LBP, the intensity of the pain (current and last week), variation of the pain intensity, disability, intake of oral medications, physiotherapy for CLBP, number of missed days of training and number of missed matches are not significantly related to the chronicity of LBP or the sports discipline. Only the number of missed days of training had a significant association with the chronicity of LBP. CLBP is a common complaint in Indian university athletes, and our findings indicate the necessity for a specific prevention program.
Understanding Bulk-Bitwise Processing In-Memory Through Database Analytics
Creators: name: Perach, Ben
name: Ronen, Ronny
name: Kimelfeld, Benny
name: Kvatinsky, Shahar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Hardware Architecture (cs.AR)
subject: Emerging Technologies (cs.ET)
subject: FOS: Computer and information sciences

description: Bulk-bitwise processing-in-memory (PIM), where large bitwise operations are performed in parallel by the memory array itself, is an emerging form of computation with the potential to mitigate the memory wall problem. This paper examines the capabilities of bulk-bitwise PIM by constructing PIMDB, a fully-digital system based on memristive stateful logic, utilizing and focusing on in-memory bulk-bitwise operations, designed to accelerate a real-life workload: analytical processing of relational databases. We introduce a host processor programming model to support bulk-bitwise PIM in virtual memory, develop techniques to efficiently perform in-memory filtering and aggregation operations, and adapt the application data set into the memory. To understand bulk-bitwise PIM, we compare it to an equivalent in-memory database on the same host system. We show that bulk-bitwise PIM substantially lowers the number of required memory read operations, thus accelerating TPC-H filter operations by 1.6$\times$--18$\times$ and full queries by 56$\times$--608$\times$, while reducing the energy consumption by 1.7$\times$--18.6$\times$ and 0.81$\times$--12$\times$ for these benchmarks, respectively. Our extensive evaluation uses the gem5 full-system simulation environment. The simulations also evaluate cell endurance, showing that the required endurance is within the range of existing endurance of RRAM devices.
description: published in IEEE Transactions on Emerging Topics in Computing
Superior rotational stability and lower re-ruptures rate after combined anterolateral and anterior cruciate ligament reconstruction compared to isolated anterior cruciate ligament reconstruction: a 2-year prospective randomized clinical trial
Creators: name: Mogos, Ștefan
name: Antonescu, Dinu
name: Stoica, Ioan-Cristian
name: D’Ambrosi, Riccardo
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
classificationCode: 111714
subject: Mental Health
subject: Computational Biology

description: The purpose of the current prospective randomized clinical trial (RCT) was to compare the clinical outcomes of combined anterior cruciate ligament (ACL) and anterolateral ligament (ALL) reconstruction with those of isolated ACL reconstruction and evaluate the re-rupture rate between the two study groups. This prospective RCT included 58 patients (43 men and 15 women) who underwent ACL reconstruction, either isolated (Group I: 26 patients) or combined with the ALL reconstruction (Group II: 32 patients). Preoperatively, the two groups differed in age and rate of medial meniscal injuries. The patients were evaluated preoperatively and postoperatively during the time points corresponding to 6 (T1) weeks, 12 (T2) weeks, 6 (T3) months, 12 (T4) months, and 24 (T5) months. The evaluation included the clinical examination (comprising Lachman test, Pivot Shift test, Range of Motion, and Rolimeter differential anterior laxity), the objective clinical score (Objective IKDC [The International Knee Documentation Committee] score), and the subjective clinical scores (comprising Subjective IKDC score, Lysholm score, and Tegner activity score). The postoperative complications of all the patients were recorded. Both the groups reported a significant improvement in clinical scores during the final follow-up as compared to the preoperative value (p < 0.05). The only differences between the two groups were observed with respect to the pivot shift test during each follow-up, wherein more patients from group I reported a pivot shift test grade I as compared to group II (p < 0.05). Three patients from group I reported a re-rupture of the operated knee, whereas no patients from group II reported new ruptures (p = 0.041). Combined ACL and ALL reconstruction has proven to be more effective in obtaining a high grade of rotational knee stability during mid-term follow-up as compared to isolated ACL reconstruction along with a significantly lower rate of re-ruptures. Level I: Randomized Clinical Trial researchregistry5873: www.researchregistry.com
The New Multi-Edge Metric-Constrained PEG/QC-PEG Algorithms for Designing the Binary LDPC Codes With Better Cycle-Structures
Creators: name: He, Xuan
name: Zhou, Liang
name: Du, Junyi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: To obtain a better cycle-structure is still a challenge for the low-density parity-check (LDPC) code design. This paper formulates two metrics firstly so that the progressive edge-growth (PEG) algorithm and the approximate cycle extrinsic message degree (ACE) constrained PEG algorithm are unified into one integrated algorithm, called the metric-constrained PEG algorithm (M-PEGA). Then, as an improvement for the M-PEGA, the multi-edge metric-constrained PEG algorithm (MM-PEGA) is proposed based on two new concepts, the multi-edge local girth and the edge-trials. The MM-PEGA with the edge-trials, say a positive integer $r$, is called the $r$-edge M-PEGA, which constructs each edge of the non-quasi-cyclic (non-QC) LDPC code graph through selecting a check node whose $r$-edge local girth is optimal. In addition, to design the QC-LDPC codes with any predefined valid design parameters, as well as to detect and even to avoid generating the undetectable cycles in the QC-LDPC codes designed by the QC-PEG algorithm, the multi-edge metric constrained QC-PEG algorithm (MM-QC-PEGA) is proposed lastly. It is verified by the simulation results that increasing the edge-trials of the MM-PEGA/MM-QC-PEGA is expected to have a positive effect on the cycle-structures and the error performances of the LDPC codes designed by the MM-PEGA/MM-QC-PEGA.
description: 30 pages, 6 figures
Geometric Dominating Sets
Creators: name: Aichholzer, Oswin
name: Eppstein, David
name: Hainzl, Eva-Maria
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Geometry (cs.CG)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We consider a minimizing variant of the well-known \emph{No-Three-In-Line Problem}, the \emph{Geometric Dominating Set Problem}: What is the smallest number of points in an $n\times n$~grid such that every grid point lies on a common line with two of the points in the set? We show a lower bound of $Ω(n^{2/3})$ points and provide a constructive upper bound of size $2 \lceil n/2 \rceil$. If the points of the dominating sets are required to be in general position we provide optimal solutions for grids of size up to $12 \times 12$. For arbitrary $n$ the currently best upper bound for points in general position remains the obvious $2n$. Finally, we discuss the problem on the discrete torus where we prove an upper bound of $O((n \log n)^{1/2})$. For $n$ even or a multiple of 3, we can even show a constant upper bound of 4. We also mention a number of open questions and some further variations of the problem.
A Unified Cosmological Dark Sector from a Bose-Einstein Condensate
Creators: name: Das, Saurya
name: Sur, Sourav
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We examine the viability of cosmological solution(s) describing a unified picture of the dark side of the universe from a Bose-Einstein condensate (BEC) of light bosons. The energy density of the BEC, together with its quantum potential, can indeed account for such a unification, in the sense that the (dust-like) cold dark matter and the dark energy components emerge from the same source. In particular, the bulk of the dark energy can be attributed to the quantum potential, in the quantum corrected Raychaudhuri-Friedmann equation, when the `macroscopic' BEC wave-function is taken to be such that the corresponding probability density is construed as the energy density of the dusty fluid. However, there arises a purely quantum mechanical back-reaction effect, of even the visible baryons, on the effective dark energy and dark matter contents, which crucially determines the mass of the BEC. We determine the constraint on such a back-reaction, and hence on the BEC mass, from physical considerations, as well as estimate the same using recent observational data.
description: Updated version. 28 pages, 4 figures, 1 table
Non-Adiabatic Dynamics around a Conical Intersection with Surface-Hopping Coupled Coherent States
Creators: name: Humeniuk, Alexander
name: Mitrić, Roland
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: An extension of the CCS-method [Chem. Phys. 2004, 304, p. 103-120] for simulating non-adiabatic dynamics with quantum effects of the nuclei is put forward. The time-dependent Schrödinger equation for the motion of the nuclei is solved in a moving basis set. The basis set is guided by classical trajectories, which can hop stochastically between different electronic potential energy surfaces. The non-adiabatic transitions are modelled by a modified version of Tully's fewest switches algorithm. The trajectories consist of Gaussians in the phase space of the nuclei (coherent states) combined with amplitudes for an electronic wave function. The time-dependent matrix elements between different coherent states determine the amplitude of each trajectory in the total multistate wave function; the diagonal matrix elements determine the hopping probabilities and gradients. In this way, both intereference effects and non-adiabatic transitions can be described in a very compact fashion, leading to the exact solution if convergence with respect to the number of trajectories is achieved and the potential energy surfaces are known globally. The method is tested on a 2D model for a conical intersection [J. Chem. Phys., 1996, 104, p. 5517], where a nuclear wavepacket encircles the point of degeneracy between two potential energy surfaces and intereferes with itself. These intereference effects are absent in classical trajectory-based molecular dynamics but can be fully incorporated if trajectories are replaced by surface hopping coupled coherent states.
One-loop pentagon integral in $d$ dimensions from differential equations in $ε$-form
Creators: name: Kozlov, Mikhail G.
name: Lee, Roman N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We apply the differential equation technique to the calculation of the one-loop massless diagram with five onshell legs. Using the reduction to $ε$-form, we manage to obtain a simple one-fold integral representation exact in space-time dimensionality. The expansion of the obtained result in $ε$ and the analytical continuation to physical regions are discussed.
description: 16 pages, 2 figures, v2: minor stylistic corrections, acknowlednments updated
The determinants of knee cartilage volume in health and disease
Creators: name: Wluka., Anita Estelle
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Microscopic origin of shape coexistence in the N=90, Z=64 region
Creators: name: Bonatsos, Dennis
name: Karakatsanis, K. E.
name: Martinou, Andriana
name: Mertzimekis, T. J.
name: Minkov, N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A microscopic explanation of the nature of shape coexistence in the N=90, Z=64 region is suggested, based on calculations of single particle energies through standard covariant density functional theory. It is suggested that shape coexistence in the N=90 region is caused by the protons, which create neutron particle-hole (p-h) excitations across the N=112 3-dimensional isotropic harmonic oscillator (3D-HO) magic number, signaling the start of the occupation of the 1i13/2 intruder orbital, which triggers stronger proton-neutron interaction, causing the onset of the deformation and resulting in the shape/phase transition from spherical to deformed nuclei described by the X(5) critical point symmetry. A similar effect is seen in the N=60, Z=40 region, in which p-h excitations across the N=70 3D-HO magic number occur, signaling the start of the occupation of the 1h11/2 intruder orbital.
description: 6 pages, 7 figures
The disappearance of the helium-giant progenitor of the type Ib supernova iPTF13bvn and constraints on its companion
Creators: name: Eldridge, J. J.
name: Maund, J. R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report and discuss post-explosion observations of supernova iPTF13bvn. We find that the brightness of the SN at +740 days is below the level of the pre-explosion source and thus confirm that the progenitor star has gone. We estimate that the late-time brightness is still dominated by the supernova, which constrains the magnitude and thus mass of a possible companion star to below approximately 10Msun. In turn this implies that the progenitor's initial mass is constrained to a narrow range of between 10 to 12Msun. The progenitor of iPTF13bvn would have been a helium giant rather than a Wolf-Rayet star. In addition, we suggest that sufficiently deep observations acquired in 2016 would now stand a chance to directly observe the companion star.
description: Resubmitted to MNRAS after revision, 5 pages, 4 figures, 2 tables
Energy-Efficient Data Transfer Optimization via Decision-Tree Based Uncertainty Reduction
Creators: name: Jamil, Hasibul
name: Rodolph, Lavone
name: Goldverg, Jacob
name: Kosar, Tevfik
Publisher: name: arXiv
Year: 2022
Subjects: subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: The increase and rapid growth of data produced by scientific instruments, the Internet of Things (IoT), and social media is causing data transfer performance and resource consumption to garner much attention in the research community. The network infrastructure and end systems that enable this extensive data movement use a substantial amount of electricity, measured in terawatt-hours per year. Managing energy consumption within the core networking infrastructure is an active research area, but there is a limited amount of work on reducing power consumption at the end systems during active data transfers. This paper presents a novel two-phase dynamic throughput and energy optimization model that utilizes an offline decision-search-tree based clustering technique to encapsulate and categorize historical data transfer log information and an online search optimization algorithm to find the best application and kernel layer parameter combination to maximize the achieved data transfer throughput while minimizing the energy consumption. Our model also incorporates an ensemble method to reduce aleatoric uncertainty in finding optimal application and kernel layer parameters during the offline analysis phase. The experimental evaluation results show that our decision-tree based model outperforms the state-of-the-art solutions in this area by achieving 117% higher throughput on average and also consuming 19% less energy at the end systems during active data transfers.
description: 10 pages accepted to be published in IEEE ICCCN2022
Evidence that the maximum electron energy in hotspots of FR II galaxies is not determined by synchrotron cooling
Creators: name: Araudo, Anabella T.
name: Bell, Anthony R.
name: Crilly, Aidan
name: Blundell, Katherine M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: It has been suggested that relativistic shocks in extragalactic sources may accelerate the highest energy cosmic rays. The maximum energy to which cosmic rays can be accelerated depends on the structure of magnetic turbulence near the shock but recent theoretical advances indicate that relativistic shocks are probably unable to accelerate particles to energies much larger than a PeV. We study the hotspots of powerful radiogalaxies, where electrons accelerated at the termination shock emit synchrotron radiation. The turnover of the synchrotron spectrum is typically observed between infrared and optical frequencies, indicating that the maximum energy of non-thermal electrons accelerated at the shock is < TeV for a canonical magnetic field of ~100 micro Gauss. Based on theoretical considerations we show that this maximum energy cannot be constrained by synchrotron losses as usually assumed, unless the jet density is unreasonably large and most of the jet upstream energy goes to non-thermal particles. We test this result by considering a sample of hotspots observed with high spatial resolution at radio, infrared and optical wavelengths.
description: 9 pages, 3 figures. Accepted for publication in MNRAS
Experimental observation of periodic Korteweg-de Vries solitons along a torus of fluid
Creators: name: Novkoski, Filip
name: Pham, Chi-Tuong
name: Falcon, Eric
Publisher: name: arXiv
Year: 2022
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Classical Physics (physics.class-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We report on the experimental observation of solitons propagating along a torus of fluid. We show that such a periodic system leads to significant differences compared to the classical plane geometry. In particular, we highlight the observation of subsonic elevation solitons, and a nonlinear dependence of the soliton velocity on its amplitude. The soliton profile, velocity, collision, and dissipation are characterized using high resolution space-time measurements. By imposing periodic boundary conditions onto Korteweg-de Vries (KdV) equation, we recover these observations. A nonlinear spectral analysis of solitons (periodic inverse scattering transform) is also implemented and experimentally validated in this periodic geometry. Our work thus reveals the importance of periodicity for studying solitons and could be applied to other fields involving periodic systems governed by a KdV equation.
description: submitted to EPL. For Supplementary Material see http://www.msc.univ-paris-diderot.fr/~falcon/EPL22/mainv7_srAndSuppMAt.pdf
Universality of the Einstein theory of gravitation
Creators: name: Kijowski, Jerzy
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show that generalizations of general relativity theory, which consist in replacing the Hilbert Lagrangian $L_{Hilbert} = \frac 1{16π} \sqrt{|g|} R$ by a generic scalar density $L=L(g_{μν}, R^λ_{μνκ})$ depending upon the metric $g_{μν}$ and the curvature tensor $R^λ_{μνκ}$, are equivalent to the conventional Einstein theory for a (possibly) different metric tensor $\tilde{g}_{μν}$ and (possibly) a different set of matter fields. The simple proof of this theorem relies on a new approach to variational problems containing metric and connection.
2D Plasmonics for Enabling Novel Light-Matter Interactions
Creators: name: Rivera, Nicholas
name: Kaminer, Ido
name: Zhen, Bo
name: Joannopoulos, John D.
name: Soljacic, Marin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The physics of light-matter interactions is strongly constrained by both the small value of the fine-structure constant and the small size of the atom. Overcoming these limitations is a long-standing challenge. Recent theoretical and experimental breakthroughs have shown that two dimensional systems, such as graphene, can support strongly confined light in the form of plasmons. These 2D systems have a unique ability to squeeze the wavelength of light by over two orders of magnitude. Such high confinement requires a revisitation of the main assumptions of light-matter interactions. In this letter, we provide a general theory of light-matter interactions in 2D systems which support plasmons. This theory reveals that conventionally forbidden light-matter interactions, such as: high-order multipolar transitions, two-plasmon spontaneous emission, and spin-flip transitions can occur on very short time-scales - comparable to those of conventionally fast transitions. Our findings enable new platforms for spectroscopy, sensing, broadband light generation, and a potential test-ground for non-perturbative quantum electrodynamics.
description: Supplementary Materials not included (first page edited)
The Approximate Solution of Newell Whitehead Segel and Fisher Equations Using The Adomian Decomposition Method
Creators: name: Aswhad, Asmaa A.
name: Jaddoa, Aqeel Falih
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics

description: In the present work, we use the Adomian Decomposition method to find the approximate solution for some cases of the Newell whitehead segel nonlinear differential equation which was solved previously with exact solution by the Homotopy perturbation and the Iteration methods, then we compared the results.
description: 12 pages
Three-dimensional direct numerical simulation of free-surface magnetohydrodynamic wave turbulence
Creators: name: Kochurin, Evgeny
name: Ricard, Guillaume
name: Zubarev, Nikolay
name: Falcon, Eric
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Chaotic Dynamics (nlin.CD)
subject: Classical Physics (physics.class-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We report on three-dimensional direct numerical simulation of wave turbulence on the free surface of a magnetic fluid subjected to an external horizontal magnetic field. A transition from capillarywave turbulence to anisotropic magneto-capillary wave turbulence is observed for an increasing field. At high enough field, wave turbulence becomes highly anisotropic, cascading mainly perpendicularly to the field direction, in good agreement with the prediction of a phenomenological model, and with anisotropic Alfv{é}n wave turbulence. Although surface waves on a magnetic fluid are different from Alfv{é}n waves in plasma, a strong analogy is found with similar wave spectrum scalings and similar magnetic-field dependent dispersionless wave velocities.
description: in press in Phys. Rev E (Letter). For Supplemental Material, see http://www.msc.univ-paris-diderot.fr/~falcon/PRE\_Letter22/PRE2022andSuppMat.pdf
Studies on proteoglycan catabolism in ligament
Creators: name: Winter., Ann D.
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Catalysis of Dynamical Chiral Symmetry Breaking by Chiral Chemical Potential
Creators: name: Braguta, V. V.
name: Kotov, A. Yu.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we study the properties of media with chiral imbalance parameterized by chiral chemical potential. It is shown that depending on the strength of interaction between constituents in the media the chiral chemical potential either creates or enhances dynamical chiral symmetry breaking. Thus the chiral chemical potential plays a role of the catalyst of dynamical chiral symmetry breaking. Physically this effect results from the appearance of the Fermi surface and additional fermion states on this surface which take part in dynamical chiral symmetry breaking. An interesting conclusion which can be drawn is that at sufficiently small temperature chiral plasma is unstable with respect to condensation of Cooper pairs and dynamical chiral symmetry breaking even for vanishingly small interactions between constituents.
description: 5 pages, 1 figure
A geometric proof of the periodic averaging theorem on Riemannian manifolds
Creators: name: Camacho, Misael Avendaño
name: Rascón, Guillermo Dávila
Publisher: name: arXiv
Year: 2015
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 37C10, 37C55, 37J40, 53C20, 55R10, 58D17

description: We present a geometric proof of the averaging theorem for perturbed dynamical systems on a Riemannian manifold, in the case where the flow of the unperturbed vector field is periodic and the $\mathbb{S}^{1}$-action associated to this vector field is not necessarily trivial. We generalize the averaging procedure \cite{Arno-63,ArKN-88} defining a global averaging method based on a free coordinate approach which allow us to formulate our results on any open domain with compact closure.
description: The final publication is available at link.springer.com, Revista Matem\'atica Complutense (2016)
Daemonorops fissilis A. J. Hend. 2010, comb. nov.
Creators: name: Henderson, Andrew
name: Dung, Nguyen Quoc
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Arecales
Arecaceae
Daemonorops
Daemonorops fissilis

description: Daemonorops fissilis (A.J.Hend., N.K.Ban & N.Q.Dung) A.J.Hend., comb. nov.
Basionym: — Calamus fissilis Henderson et al. (2008: 192).
Type:— VIETNAM. Thua Thien-Hue: Bach Ma National Park, 16°14’N, 107°52’E, 100 m, 12 April 2007, A. Henderson, N. Q. Dung, P. X. Phuong, & L. V. Bo 3266 (holotype: HN!, isotypes: K! NY!).
Additional material studied:— VIETNAM: Da Nang City, Hoa Vang District, Ba Na-Nui Chua Nature Reserve, steep forested slopes, 16°00’N, 108°01’E, ca. 800 m, 4 Jun 2009, Henderson & N. K. Ban 3596 (HN, NY).
description: Published as part of Henderson, Andrew & Dung, Nguyen Quoc, 2010, Notes on rattans (Arecaceae) from Vietnam, pp. 25-33 in Phytotaxa 8 on page 27, DOI: 10.11646/phytotaxa.8.1.2, http://zenodo.org/record/4893981
A NLTE line formation for neutral and singly-ionised titanium in model atmospheres of the reference A-K stars
Creators: name: Sitnova, T. M.
name: Mashonkina, L. I.
name: Ryabchikova, T. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We construct a comprehensive model atom for TiI-II using more than 3600 measured and predicted energy levels of TiI and 1800 energy levels of TiII, and quantum mechanical photoionisation cross-sections. Non-local thermodynamical equilibrium (NLTE) line formation for the two ions of titanium is treated through a wide range of spectral types from A to K, including metal-poor stars with [Fe/H] down to -2.6 dex. NLTE leads to systematically depleted total absorption in the TiI lines and to positive abundance corrections. The magnitude of NLTE abundance corrections is smaller compared to the available literature data for the cool (FGK type) atmospheres. NLTE leads to strengthened TiII lines and to negative NLTE abundance corrections. For the first time, we performed the NLTE calculations for TiI-II in the 6500 K < Teff < 13000 K range. The deviations from LTE grow towards higher effective temperature. For four A type stars we derived the NLTE and LTE abundances from lines of TiI and TiII. In LTE an abundance discrepancy of up to 0.22 dex was obtained between TiI and TiII, and it vanishes in NLTE. For other four A-B stars, with only TiII lines observed, NLTE leads to smaller line-to-line scatter compared to LTE. An efficiency of inelastic TiI + HI collisions was empirically estimated from analysis of TiI and TiII lines in 17 cool stars in a wide metallicity range -2.6 < [Fe/H] < 0.0. Consistent NLTE abundances from lines of TiI and TiII were obtained applying classical Drawinian rates for the stars with log g > 4.1, and neglecting inelastic collisions with HI for the VMP giant HD 122563. For the very metal-poor turn-off stars ([Fe/H] < -2 and log g < 4.1), the abundance difference TiI-TiII was obtained to be positive already in LTE and it increases in NLTE. The accurate collisional data for TiI and TiII are desired to find a clue to this problem.
description: accepted for publication in MNRAS
X-rays from magnetic intermediate mass Ap/Bp stars
Creators: name: Robrade, Jan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The X-ray emission of magnetic intermediate mass Ap/Bp stars is reviewed and put into context of intrinsic as well as extrinsic hypotheses for its origin. New X-ray observations of Ap/Bp stars are presented and combined with an updated analysis of the available datasets, providing the largest sample of its type that is currently available. In the studied stars the X-ray detections are found predominantly among the more massive, hotter and more luminous targets. Their X-ray properties are quite diverse and beside strong soft X-ray emission significant magnetic activity is frequently present. While a connection between more powerful winds and brighter X-ray emission is expected in intrinsic models, the scatter in X-ray luminosity at given bolometric luminosity is so far unexplained and several observational features like X-ray light curves and flaring, luminosity distributions and spectral properties are often similar to those of low-mass stars. It remains to be seen if these features can be fully reproduced by magnetospheres of intermediate mass stars. The article discusses implications for magnetically confined wind-shock models (MCWS) and stellar magnetospheres under the assumption that the intrinsic model is applicable, but also examines the role of possible companions. Further, related magnetospheric phenomena are presented and an outlook on future perspectives is given.
description: accepted, to appear in Advances in Space Research
Daemonorops nuichuaensis A. J. Hend. 2010, comb. nov.
Creators: name: Henderson, Andrew
name: Dung, Nguyen Quoc
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Arecales
Arecaceae
Daemonorops
Daemonorops nuichuaensis

description: Daemonorops nuichuaensis (A.J.Hend., N.K.Ban & N.Q.Dung) A.J.Hend., comb. nov.
Basionym:— Calamus nuichuaensis Henderson et al. (2008: 196).
Type:—VIETNAM. Ninh Thuan: Ninh Hai District, Nui Chua National Park, near summit of mountain, forest on rocky slopes, 11 ° 48 ’N, 109°10’E, ca. 800 m, 27 July 2007, A. Henderson, N.K. Ban, & A R. Cui 3468 (holotype: HN!, isotypes: K! NY!).
Additional material studied:— VIETNAM. Ninh Thuan Province: Ninh Hai District, Nui Chua National Park, 11.80N, 109.16E, ca. 800 m, 26 Oct 2009, Henderson et al. 3646 (HN, NY).
The transfer of these two species brings the number of Daemonorops in Vietnam to five: D. jenkinsiana (Griffith) Martius (1853: 327), D. poilanei Dransfield (2001: 663), D. mollispina Dransfield (2001: 662), D. fissilis and D. nuichuaensis. All but D. jenkinsiana are endemic to Vietnam and belong to section Piptospatha. Recent field work revealed another two species new to science, making a total of seven Daemonorops for Vietnam.
description: Published as part of Henderson, Andrew & Dung, Nguyen Quoc, 2010, Notes on rattans (Arecaceae) from Vietnam, pp. 25-33 in Phytotaxa 8 on pages 27-28, DOI: 10.11646/phytotaxa.8.1.2, http://zenodo.org/record/4893981
Chicken thymic and bursal stromal cells : characterization, ontogeny and alterations in immunodeficiency and autoimmunity
Creators: name: Wilson., Trevor John
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Fractal scattering of Gaussian solitons in directional couplers with logarithmic nonlinearities
Creators: name: Teixeira, Rafael M. P.
name: Cardoso, Wesley B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: In this paper we study the interaction of Gaussian solitons in a dispersive and nonlinear media with log-law nonlinearity. The model is described by the coupled logarithmic nonlinear Schrödinger equations, which is a nonintegrable system that allows the observation of a very rich scenario in the collision patterns. By employing a variational approach and direct numerical simulations, we observe a fractal-scattering phenomenon from the exit velocities of each soliton as a function of the input velocities. Furthermore, we introduce a linearization model to identify the position of the reflection/transmission window that emerges within the chaotic region. This enable us the possibility of controlling the scattering of solitons as well as the lifetime of bound states.
description: 12 pages, 11 figures
High-order implicit time integration scheme with controllable numerical dissipation based on mixed-order Padé expansions
Creators: name: Song, Chongmin
name: Zhang, Xiaoran
name: Eisenträger, Sascha
name: Ankit, Ankit
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: J.2; G.1.3; G.1.8
subject: 65M22

description: A single-step high-order implicit time integration scheme with controllable numerical dissipation at high frequencies is presented for the transient analysis of structural dynamic problems. The amount of numerical dissipation is controlled by a user-specified value of the spectral radius $ρ_\infty$ in the high frequency limit. Using this user-specified parameter as a weight factor, a Padé expansion of the matrix exponential solution of the equation of motion is constructed by mixing the diagonal and sub-diagonal expansions. An efficient timestepping scheme is designed where systems of equations, similar in complexity to the standard Newmark method, are solved recursively. It is shown that the proposed high-order scheme achieves high-frequency dissipation, while minimizing low-frequency dissipation and period errors. The effectiveness of the provided dissipation control and the efficiency of the scheme are demonstrated by numerical examples. A simple guideline for the choice of the controlling parameter and time step size is provided. The source codes written in MATLAB and FORTRAN are available for download at: https://github.com/ChongminSong/HighOrderTimeIntegration.
description: 37 pages, 36 figures, 89 equations