cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hohmann Transfer via Constrained Optimization
Creators: name: Xie, Li
name: Zhang, Yiqun
name: Xu, Junyan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics
subject: 49J15

description: In the first part of this paper, inspired by the geometric method of Jean-Pierre Marec, we consider the two-impulse Hohmann transfer problem between two coplanar circular orbits as a constrained nonlinear programming problem. By using the Kuhn-Tucker theorem, we analytically prove the global optimality of the Hohmann transfer. Two sets of feasible solutions are found, one of which corresponding to the Hohmann transfer is the global minimum, and the other is a local minimum. In the second part, we formulate the Hohmann transfer problem as two-point and multi-point boundary-value problems by using the calculus of variations. With the help of the Matlab solver bvp4c, two numerical examples are solved successfully, which verifies that the Hohmann transfer is indeed the solution of these boundary-value problems. Via static and dynamic constrained optimization, the solution to the orbit transfer problem proposed by W. Hohmann ninety-two years ago and its global optimality are re-discovered.
description: 20 pages, 10 figures
Additional file 1: of Applied screening tests for the detection of superior face recognition
Creators: name: Bate, Sarah
name: Frowd, Charlie
name: Bennetts, Rachel
name: Hasshim, Nabil
name: Murray, Ebony
name: Bobak, Anna
name: Wills, Harriet
name: Richards, Sarah
Publisher: name: figshare
Year: 2018
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Science Policy

description: Preparation of the composite stimuli for the Crowds matching test. (DOCX 17 kb)
Robust Optical Data Encryption by Projection-Photoaligned Polymer-Stabilized-Liquid-Crystals
Creators: name: Liu, Siying
name: Alfarhan, Saleh
name: Wang, Wenbo
name: Feng, Shuai
name: Zhu, Yuxiang
name: Liu, Luyang
name: Song, Kenan
name: Yang, Sui
name: Jin, Kailong
name: Chen, Xiangfan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The emerging Internet of Things (IoTs) invokes increasing security demands that require robust encryption or anti-counterfeiting technologies. Albeit being acknowledged as efficacious solutions in processing elaborate graphical information via multiple degrees of freedom, optical data encryption and anti-counterfeiting techniques are typically inept in delivering satisfactory performance without compromising the desired ease-of-processibility or compatibility, thus leading to the exploration of novel materials and devices that are competent. Here, a robust optical data encryption technique is demonstrated utilizing polymer-stabilized-liquid-crystals (PSLCs) combined with projection photoalignment and photopatterning methods. The PSLCs possess implicit optical patterns encoded via photoalignment, as well as explicit geometries produced via photopatterning. Furthermore, the PSLCs demonstrate improved robustness against harsh chemical environments and thermal stability, and can be directly deployed onto various rigid and flexible substrates. Based on this, it is demonstrated that single PSLC is apt to carry intricate information, or serve as exclusive watermark with both implicit features and explicit geometries. Moreover, a novel, generalized design strategy is developed, for the first time, to encode intricate and exclusive information with enhanced security by spatially programming the photoalignment patterns of a pair of cascade PSLCs, which further illustrates the promising capabilies of PSLCs in optical data encryption and anti-counterfeiting.
An axiomatic approach to intrinsic dimension of a dataset
Creators: name: Pestov, Vladimir
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences
subject: H.1.1; H.2.1; H.3.1; I.5.3

description: We perform a deeper analysis of an axiomatic approach to the concept of intrinsic dimension of a dataset proposed by us in the IJCNN'07 paper (arXiv:cs/0703125). The main features of our approach are that a high intrinsic dimension of a dataset reflects the presence of the curse of dimensionality (in a certain mathematically precise sense), and that dimension of a discrete i.i.d. sample of a low-dimensional manifold is, with high probability, close to that of the manifold. At the same time, the intrinsic dimension of a sample is easily corrupted by moderate high-dimensional noise (of the same amplitude as the size of the manifold) and suffers from prohibitevely high computational complexity (computing it is an $NP$-complete problem). We outline a possible way to overcome these difficulties.
description: 10 pages, 5 figures, latex 2e with Elsevier macros, final submission to Neural Networks with referees' comments taken into account
How does technology influence young people’s drinking? A complex relationship in need of innovation
Creators: name: Caluzzi, Gabriel
name: Pennay, Amy
name: Livingston, Michael
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 5203
subject: Clinical and health psychology
classificationCode: 5202
subject: Biological psychology
classificationCode: 4206
subject: Public health

description: Changes in technology use and increased uptake of new forms of digital technology have been hypothesised as one of the key drivers for declining drinking among young people. Although some research has attempted to draw links between technology and young people’s drinking, little work has unpacked this complex relationship with reference to the multitude of ways technology has become a central component of young people’s lives. In this article, we suggest that the embeddedness of technologies can shape young people’s relationships with alcohol in dynamic ways that go beyond previous research, which has largely focused on deterministic relationships and associations. We discuss the multitude of effects digital technologies have on drinking practices at the micro (how young people do identity work), meso (their social practices and relationships) and macro level (the cultural norms and imperatives around alcohol). At all of these levels, digital technologies are implicated in increasing, reducing, destabilising, and transforming young people’s drinking. We suggest several ways forward for research using more theoretically informed approaches. Given these different layers–micro, macro and meso–need to be acknowledged as important mediators, a more nuanced approach to the various configurations of drinking and non-drinking practices digital technologies afford is essential in the design of future research.
Additional File 2:
Creators: name: Chase, Thomas
name: Julius, Adam
name: Joht Chandan
name: Powell, Emily
name: Hall, Charles
name: Phillips, Benedict
name: Burnett, Ryan
name: Gill, Deborah
name: Bimbi Fernando
Publisher: name: figshare
Year: 2018
Subjects: subject: Molecular Biology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: Appendix S2. Selected survey questions with data analysed within this manuscript. (DOCX 63 kb)
Planet Four: Probing Springtime Winds on Mars by Mapping the Southern Polar CO$_2$ Jet Deposits
Creators: name: Aye, K. -Michael
name: Schwamb, Megan E.
name: Portyankina, Ganna
name: Hansen, Candice J.
name: McMaster, Adam
name: Miller, Grant R. M.
name: Carstensen, Brian
name: Snyder, Christopher
name: Parrish, Michael
name: Lynn, Stuart
name: Mai, Chuhong
name: Miller, David
name: Simpson, Robert J.
name: Smith, Arfon M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The springtime sublimation process of Mars' southern seasonal polar CO$_2$ ice cap features dark fan-shaped deposits appearing on the top of the thawing ice sheet. The fan material likely originates from the surface below the ice sheet, brought up via CO$_2$ jets breaking through the seasonal ice cap. Once the dust and dirt is released into the atmosphere, the material may be blown by the surface winds into the dark streaks visible from orbit. The location, size and direction of these fans record a number of parameters important to quantifying seasonal winds and sublimation activity, the most important agent of geological change extant on Mars. We present results of a systematic mapping of these south polar seasonal fans with the Planet Four online citizen science project. Planet Four enlists the general public to map the shapes, directions, and sizes of the seasonal fans visible in orbital images. Over 80,000 volunteers have contributed to the Planet Four project, reviewing 221 images, from Mars Reconnaissance Orbiter's HiRISE (High Resolution Imaging Science Experiment) camera, taken in southern spring during Mars Years 29 and 30. We provide an overview of Planet Four and detail the processes of combining multiple volunteer assessments together to generate a high fidelity catalog of $\sim$ 400,000 south polar seasonal fans. We present the results from analyzing the wind directions at several locations monitored by HiRISE over two Mars years, providing new insights into polar surface winds.
description: 75 pages, 46 figures, minor revisions discovered in proof, accepted and in press at Icarus
Deforming monomial space curves into set-theoretic complete intersection singularities
Creators: name: Granger, Michel
name: Schulze, Mathias
Publisher: name: arXiv
Year: 2018
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 32S30 (Primary) 14H50, 20M25 (Secondary)

description: We deform monomial space curves in order to construct examples of set-theoretical complete intersection space curve singularities. As a by-product we describe an inverse to Herzog's construction of minimal generators of non-complete intersection numerical semigroups with three generators.
description: 18 pages
Charge density wave formation in $R_{2}$Te$_{5}$ ($R$=Nd, Sm and Gd)
Creators: name: Shin, K. Y.
name: Laverock, J.
name: Wu, Y. Q.
name: Condron, C. L.
name: Toney, M. F.
name: Dugdale, S. B.
name: Kramer, M. J.
name: Fisher, I. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The rare earth ($R$) tellurides $R_2$Te$_5$ have a crystal structure intermediate between that of $R$Te$_2$ and $R$Te$_3$, consisting of alternating single and double Te planes sandwiched between $R$Te block layers. We have successfully grown single crystals of Nd$_2$Te$_5$, Sm$_2$Te$_5$ and Gd$_2$Te$_5$ from a self flux, and describe here the first evidence for charge density wave formation in these materials. The superlattice patterns for all three compounds are relatively complex, consisting at room temperature of at least two independent wavevectors. Consideration of the electronic structure indicates that to a large extent these wave vectors are separately associated with sheets of the Fermi surface which are principally derived from the single and double Te layers.
description: 10 pages, 6 figures
Quantum Griffiths singularity in the stoichiometric heavy-fermion system CeRh$_4$Al$_{15}$
Creators: name: Tripathi, Rajesh
name: Adroja, D. T.
name: Muro, Y.
name: Sharma, Shivani
name: Biswas, P. K.
name: Namiki, T.
name: Kuwai, T.
name: Hiroto, T.
name: Strydom, A. M.
name: Sundaresan, A.
name: Langridge, S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a detailed investigation of the stoichiometric CeRh$_4$Al$_{15}$ single crystal compound using the temperature dependence of the heat capacity [$C_{\text{P}}$($T$)], electrical resistivity [$ρ$($T$)], magnetic susceptibility [$χ$($T$)], and magnetization [$M$($H$)] measurements for a magnetic field ($H$) applied in the basal plane and along the $c$-axis. The low temperature power-law behavior of $C$/$T$ $\propto$ $χ$ $\propto$ $T^{-1+α}$, the isotherm magnetization, $M \sim H^α$ with the exponent $α$ = 0.45 - 0.55, and the $T$-linear resistivity $Δρ$ $\sim$ $T^ε$ with $ε\sim$ 1 are found to be consistent with the formation of quantum Griffiths singularities in the non-Fermi-liquid (NFL) regime. We further investigated the spin dynamics of a polycrystalline sample of CeRh$_4$Al$_{15}$, using zero-field (ZF) and longitudinal-field (LF) muon spin relaxation ($μ$SR) measurements. ZF-$μ$SR measurements do not reveal any sign of long-range magnetic ordering down to 70~mK. The electronic relaxation rate ($λ$) below 0.5~K increases rapidly and shows a thermal activation-like characteristic [$T$log($λ$)$\sim$ $T$] over the entire measured temperature range between 70~mK to 4~K, indicating the presence of low energy spin fluctuations in CeRh$_4$Al$_{15}$. LF-$μ$SR measurements show a time-field ($t/H^η$) scaling of the $μ$SR asymmetry indicating a quantum critical behavior of this compound. Furthermore, inelastic neutron scattering study on the polycrystalline sample reveals two crystal field excitations near 19 and 33~meV. These features collectively provide strong evidence of NFL behavior in CeRh$_4$Al$_{15}$ due to the formation of Griffiths phase close to a $T$ $\rightarrow$ 0~K quantum critical point.
description: 12 pages, 5 figures
Decisive test of color transparency in exclusive electroproduction of vector mesons
Creators: name: Kopeliovich, B. Z.
name: Nemchick, J.
name: Nikolaev, N. N.
name: Zakharov, and B. G.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The exclusive production of vector mesons in deep inelastic scattering is a hard scattering process with the well controlled size of quark configurations which dominate the production amplitude. This allows an unambiguous prediction of color transparency effects in the coherent and incoherent production of vector mesons on nuclei. We demonstrate how the very mechanism of color transparency leads to a belated onset of color transparency effects as a function of $Q^{2}$. We conclude that the $Q^{2}$ dependence of the exclusive $ρ^{0}$-meson production on nuclei and nucleons observed in the Fermilab E665 experiment gives a solid evidence for the onset of color transparency. We propose the scaling relation between the $ρ^{0}$ and the $J/Ψ$ production, which further tests the mechanism of color transparency in exclusive (virtual) photoproduction.
description: 11 pages, 4 figures on the request from kph154@zam001.zam.kfa-juelich.de, Juelich preprint KFA-IKP(Th)-1993-27. \phantom{.}\hspace{9cm}{\sl 8 November 1993}
Restoring canonical partition functions from imaginary chemical potential
Creators: name: Bornyakov, V. G.
name: Boyda, D.
name: Goy, V.
name: Molochkov, A.
name: Nakamura, A.
name: Nikolaev, A.
name: Zakharov, V. I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Using GPGPU techniques and multi-precision calculation we developed the code to study QCD phase transition line in the canonical approach. The canonical approach is a powerful tool to investigate sign problem in Lattice QCD. The central part of the canonical approach is the fugacity expansion of the grand canonical partition functions. Canonical partition functions $Z_n(T)$ are coefficients of this expansion. Using various methods we study properties of $Z_n(T)$. At the last step we perform cubic spline for temperature dependence of $Z_n(T)$ at fixed $n$ and compute baryon number susceptibility $χ_B/T^2$ as function of temperature. After that we compute numerically $\partialχ/ \partial T$ and restore crossover line in QCD phase diagram. We use improved Wilson fermions and Iwasaki gauge action on the $16^3 \times 4$ lattice with $m_π/m_ρ = 0.8$ as a sandbox to check the canonical approach. In this framework we obtain coefficient in parametrization of crossover line $T_c(μ_B^2)=T_c\left(c-κ\, μ_B^2/T_c^2\right)$ with $κ= -0.0453 \pm 0.0099$.
description: 6 pages, 5 figures
Additional file 2: of Who benefit from school doctors’ health checks: a prospective study of a screening method
Creators: name: Nikander, Kirsi
name: Kosola, Silja
name: Kaila, Minna
name: Hermanson, Elina
Publisher: name: figshare
Year: 2018
Subjects: subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Form for identifying concerns (Parent’s Questionnaire). (PDF 43 kb)
On-the-fly Augmented Reality for Orthopaedic Surgery Using a Multi-Modal Fiducial
Creators: name: Andress, Sebastian
name: Johnson, Alex
name: Unberath, Mathias
name: Winkler, Alexander
name: Yu, Kevin
name: Fotouhi, Javad
name: Weidert, Simon
name: Osgood, Greg
name: Navab, Nassir
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Fluoroscopic X-ray guidance is a cornerstone for percutaneous orthopaedic surgical procedures. However, two-dimensional observations of the three-dimensional anatomy suffer from the effects of projective simplification. Consequently, many X-ray images from various orientations need to be acquired for the surgeon to accurately assess the spatial relations between the patient's anatomy and the surgical tools. In this paper, we present an on-the-fly surgical support system that provides guidance using augmented reality and can be used in quasi-unprepared operating rooms. The proposed system builds upon a multi-modality marker and simultaneous localization and mapping technique to co-calibrate an optical see-through head mounted display to a C-arm fluoroscopy system. Then, annotations on the 2D X-ray images can be rendered as virtual objects in 3D providing surgical guidance. We quantitatively evaluate the components of the proposed system, and finally, design a feasibility study on a semi-anthropomorphic phantom. The accuracy of our system was comparable to the traditional image-guided technique while substantially reducing the number of acquired X-ray images as well as procedure time. Our promising results encourage further research on the interaction between virtual and real objects, that we believe will directly benefit the proposed method. Further, we would like to explore the capabilities of our on-the-fly augmented reality support system in a larger study directed towards common orthopaedic interventions.
description: S. Andress, A. Johnson, M. Unberath, and A. Winkler have contributed equally and are listed in alphabetical order
Absence of Wavepacket Diffusion in Disordered Nonlinear Systems
Creators: name: Kopidakis, G.
name: Komineas, S.
name: Flach, S.
name: Aubry, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the spreading of an initially localized wavepacket in two nonlinear chains (discrete nonlinear Schroedinger and quartic Klein-Gordon) with disorder. Previous studies suggest that there are many initial conditions such that the second moment of the norm and energy density distributions diverge as a function of time. We find that the participation number of a wavepacket does not diverge simultaneously. We prove this result analytically for norm-conserving models and strong enough nonlinearity. After long times the dynamical state consists of a distribution of nondecaying yet interacting normal modes. The Fourier spectrum shows quasiperiodic dynamics. Assuming this result holds for any initially localized wavepacket, a limit profile for the norm/energy distribution with infinite second moment should exist in all cases which rules out the possibility of slow energy diffusion (subdiffusion). This limit profile could be a quasiperiodic solution (KAM torus).
Hidden drifts in turbulence
Creators: name: Vlad, Madalina
name: Spineanu, Florin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The paper defines and discusses the concept of hidden drifts in two-dimensional turbulence. These are ordered components of the trajectories that average to zero and do not produce direct transport. Their effects appear in the evolution of the turbulence as a special type of fluxes, which consist of average motion of positive and negative fluctuations in opposite directions. We show that these fluxes have important nonlinear effects in turbulent fluids and in confined plasmas. In the first case, they determine the increase of the large scale vorticity and velocity at the expense of the small scale fluctuations by a process of separation of the vorticity fluctuations according to their sign. In the second case, they provide a mechanism for zonal flow generation and a vorticity flux that influences the sheared rotation of the plasma.
description: Latex 17 pages 4 figures included in text
Additional File 1:
Creators: name: Chase, Thomas
name: Julius, Adam
name: Joht Chandan
name: Powell, Emily
name: Hall, Charles
name: Phillips, Benedict
name: Burnett, Ryan
name: Gill, Deborah
name: Bimbi Fernando
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Molecular Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: Appendix S1. List of applications pre-loaded on iPad devices. (DOCX 99 kb)
Input State Stability of Gated Graph Neural Networks
Creators: name: Marino, Antonio
name: Pacchierotti, Claudio
name: Giordano, Paolo Robuffo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper, we aim to find the conditions for input-state stability (ISS) and incremental input-state stability ($δ$ISS) of Gated Graph Neural Networks (GGNNs). We show that this recurrent version of Graph Neural Networks (GNNs) can be expressed as a dynamical distributed system and, as a consequence, can be analysed using model-based techniques to assess its stability and robustness properties. Then, the stability criteria found can be exploited as constraints during the training process to enforce the internal stability of the neural network. Two distributed control examples, flocking and multi-robot motion control, show that using these conditions increases the performance and robustness of the gated GNNs.
Faster, farther, stronger: spin transfer torque driven high order propagating spin waves in nano-contact magnetic tunnel junctions
Creators: name: Houshang, A.
name: Khymyn, R.
name: Dvornik, M.
name: Haidar, M.
name: Etesami, S. R.
name: Ferreira, R.
name: Freitas, P. P.
name: Dumas, R. K.
name: Åkerman, J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Short wave-length exchange-dominated propagating spin waves will enable magnonic devices to operate at higher frequencies and higher data transmission rates.1 While GMR based magnetic nano-contacts are highly efficient injectors of propagating spin waves2,3, the generated wave lengths are 2.6 times the nano-contact diameter4, and the electrical signal strength remains much too weak for practical applications. Here we demonstrate nano-contact based spin wave generation in magnetic tunnel junction stacks, and observe large discrete frequency steps consistent with the hitherto ignored possibility of second and third order propagating spin waves with wave lengths of 120 and 74 nm, i.e. much smaller than the 150 nm nano-contact. These higher-order propagating spin waves will not only enable magnonic devices to operate at much higher frequencies, but also greatly increase their transmission rates and spin wave propagating lengths, both proportional to the much higher group velocity.
The escape of Lyman photons from a young starburst: the case of Haro 11
Creators: name: Hayes, Matthew
name: Ostlin, Goran
name: Atek, Hakim
name: Kunth, Daniel
name: Mas-Hesse, J. Miguel
name: Leitherer, Claus
name: Jimenez-Bailon, Elena
name: Adamo, Angela
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) Lyman-alpha (Lya) is a dominant probe of the galaxy population at high-z. However, interpretation of data drawn from Lya alone hinges on the Lya escape fraction which, due to the complex radiative transport, may vary greatly. Here we map the Lya emission from local starburst Haro 11, a Lya emitter and the only known candidate for low-z Lyman continuum emission (LyC). To aid in the interpretation we perform a detailed multi-wavelength analysis and model the stellar population, dust distribution, ionising photon budget, and star-cluster population. We use archival X-ray observations to further constrain properties of the starburst and estimate the HI column density. The Lya morphology is found to be strongly decoupled from stellar and nebular (H-alpha) morphologies. General surface photometry finds only very slight correlation between Lya and H-halpha, E(B-V), and stellar age. Only around the central Lya-bright cluster do we find the Lya/Ha ratio at values predicted by recombination theory. The total Lya escape fraction is found to be just 3%. We compute that ~90% of the Lya photons that escape do so after undergoing multiple resonance scattering events, masking their point of origin. This leads to a largely symmetric distribution and, by increasing the distance that photons must travel to escape, decreases the escape probability significantly. While dust must ultimately be responsible for the destruction of Lya, it plays little role in governing the observed morphology, which is regulated more by ISM kinematics and geometry. We find tentative evidence for local Lya equivalent width in the immediate vicinity of star-clusters being a function of cluster age, consistent with hydrodynamic studies. We estimate the ionising photon production and further constrain the escape fraction at 900 AA to
description: In press for MNRAS. 18 pages, 9 figures. Version with full resolution images to be found at http://www.astro.su.se/~matthew/english/papers/hayes_lya_haro11_hires.pdf
Semiclassical echo dynamics in the Sachdev-Ye-Kitaev model
Creators: name: Schmitt, Markus
name: Sels, Dries
name: Kehrein, Stefan
name: Polkovnikov, Anatoli
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The existence of a quantum butterfly effect in the form of exponential sensitivity to small perturbations has been under debate for a long time. Lately, this question gained increased interest due to the proposal to probe chaotic dynamics and scrambling using out-of-time-order correlators. In this work we study echo dynamics in the Sachdev-Ye-Kitaev model under effective time reversal in a semiclassical approach. We demonstrate that small imperfections introduced in the time-reversal procedure result in an exponential divergence from the perfect echo, which allows to identify a Lyapunov exponent $λ_L$. In particular, we find that $λ_L$ is twice the Lyapunov exponent of the semiclassical equations of motion. This behavior is attributed to the growth of an out-of-time-order double commutator that resembles an out-of-time-order correlator.
description: 6+7 pages, 3+7 figures
Orbital effect on intrinsic superconducting diode effect
Creators: name: Nakamura, Kyohei
name: Daido, Akito
name: Yanase, Youichi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Much ink has recently been spilled on nonreciprocal phenomena in superconductors, especially the superconducting diode effect (SDE) characterized by the nonreciprocity of the critical current $ΔJ_c$. Contrary to the fundamental and practical significance of the SDE, the precise underlying mechanism remains unclear. In this paper, we investigate the impact of an orbital effect on the intrinsic SDE in a bilayer superconductor with Rashba spin-orbit coupling and an in-plane magnetic field. We show that a small orbital effect leads to the sign reversal of $ΔJ_c$ and a crossover of the helical superconducting state at a lower magnetic field than the monolayer superconductor. On the other hand, a large orbital effect induces a decoupling transition, stabilizing a finite momentum Cooper pairing state called the orbital Fulde-Ferrell-Larkin-Ovchinnikov state, and results in the drastic change of the SDE. Owing to the orbital effect, the field dependence of the SDE may show oscillations several times. The results shed light on the mechanism of the SDE in atomically-thin multilayer superconductors.
description: 7 pages, 3 figures
B + L Non-Conservation as a Semi-Classical Process
Creators: name: McLerran, L.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I discuss the problem of computing B + L violation at high energies as that of solving classical differential equations. These equations involve boundary conditions at initial and a final times which are anti-Feynman, and involve solving non-linear differential equations which are complex, even if the original Hamiltonian was real.
description: TPI-MINN-93/51-T, NUC-MINN-93/27-T, UMN-TH-1223/93, Latex 12 pp
In-situ strain-tuning of the metal-insulator-transition of Ca$_{2}$RuO$_{4}$ in angle-resolved photoemission experiments
Creators: name: Riccò, S.
name: Kim, M.
name: Tamai, A.
name: Walker, S. McKeown
name: Bruno, F. Y.
name: Cucchi, I.
name: Cappelli, E.
name: Besnard, C.
name: Kim, T. K.
name: Dudin, P.
name: Hoesch, M.
name: Gutmann, M.
name: Georges, A.
name: Perry, R. S.
name: Baumberger, F.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the evolution of the $k$-space electronic structure of lightly doped bulk Ca$_{2}$RuO$_{4}$ with uniaxial strain. Using ultrathin plate-like crystals, we achieve strain levels up to $-4.1\%$, sufficient to suppress the Mott phase and access the previously unexplored metallic state at low temperature. Angle-resolved photoemission experiments performed while tuning the uniaxial strain reveal that metallicity emerges from a marked redistribution of charge within the Ru $t_{2g}$ shell, accompanied by a sudden collapse of the spectral weight in the lower Hubbard band and the emergence of a well defined Fermi surface which is devoid of pseudogaps. Our results highlight the profound roles of lattice energetics and of the multiorbital nature of Ca$_{2}$RuO$_{4}$ in this archetypal Mott transition and open new perspectives for spectroscopic measurements.
description: To appear in Nature Communications
Additional file 2: of Migration motives and integration of international human resources of health in the United Kingdom: systematic review and meta-synthesis of qualitative studies using framework analysis
Creators: name: Davda, Latha
name: Gallagher, Jennifer
name: Radford, David
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Cell Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy
subject: Computational Biology

description: Eligibility screening checklist. (PDF 408 kb)
A unified quasiparticle approach to the theory of strongly correlated electron liquids
Creators: name: Khodel, V. A.
name: Clark, J. W.
name: Zverev, M. V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Landau's quasiparticle formalism is generalized to describe a wide class of strongly correlated Fermi systems, in addition to conventional Fermi liquids. This class includes (i) so-called marginal exemplars and (ii) systems that harbor interaction-driven flat bands, in both of which manifestations of non-Fermi-liquid behavior are well documented. Specifically, the advent of such flat bands is attributed to a spontaneous topological rearrangement of the Landau state that supplements the conventional Landau quasiparticle picture with a different set of quasiparticles, the so-called fermion condensate, whose single-particle spectrum is dispersionless. The celebrated Landau-Luttinger theorem is extended to marginal Fermi liquids, in which the density of the augmented quasiparticle system is shown to coincide with the particle density. On the other hand, the total density of a system hosting an interaction-driven flat band turns out to be the sum of the densities of the two quasiparticle subsystems: the Landau-like component and the fermion condensate. We demonstrate that within the framework of the scenario proposed, a long-standing problem faced by theories of $D$-wave superconductivity in cuprates, namely a consistent explanation of the so-called Uemera plot, can be naturally resolved.
description: 15 pages, 3 figures
Semiclassical Theory and the Koopman-van Hove Equation
Creators: name: Joseph, Ilon
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 34E20, 34M60, 81Q20, 81S10, 81S30

description: The phase space Koopman-van Hove (KvH) equation can be derived from the asymptotic semiclassical analysis of partial differential equations. Semiclassical theory yields the Hamilton-Jacobi equation for the complex phase factor and the transport equation for the amplitude. These two equations can be combined to form a nonlinear semiclassical version of the KvH equation in configuration space. There is a natural injection of configuration space solutions into phase space and a natural projection of phase space solutions onto configuration space. Hence, every solution of the configuration space KvH equation satisfies both the semiclassical phase space KvH equation and the Hamilton-Jacobi constraint. For configuration space solutions, this constraint resolves the paradox that there are two different conserved densities in phase space. For integrable systems, the KvH spectrum is the Cartesian product of a classical and a semiclassical spectrum. If the classical spectrum is eliminated, then, with the correct choice of Jeffreys-Wentzel-Kramers-Brillouin (JWKB) matching conditions, the semiclassical spectrum satisfies the Einstein-Brillouin-Keller quantization conditions which include the correction due to the Maslov index. However, semiclassical analysis uses different choices for boundary conditions, continuity requirements, and the domain of definition. For example, use of the complex JWKB method allows for the treatment of tunneling through the complexification of phase space. Finally, although KvH wavefunctions include the possibility of interference effects, interference is not observable when all observables are approximated as local operators on phase space. Observing interference effects requires consideration of nonlocal operations, e.g. through higher orders in the asymptotic theory.
description: 49 pages, 6 figures
title: Inventaire des titres de propriété et des actes concernant les droits de l'abbaye de Morimond, Manuscrit n° 1, Bibliothèque municipale de Bourbonne-les-Bains, f.070
Creators: name: Rouzeau, Benoît
name: Rouzeau, Benoît
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cistercien
subject: cartulaire

description: Inventaire des titres de propriété et des actes concernant les droits de l'abbaye de Morimond, Manuscrit n° 1, Bibliothèque municipale de Bourbonne-les-Bains. Numérisation en mode image
description: Relation: https://cisterciensetressources.lamop.fr/
description: Bibliographic citation: Inventaire des titres de propriété et des actes concernant les droits de l'abbaye de Morimond, Manuscrit n° 1, Bibliothèque municipale de Bourbonne-les-Bains, f.070, in Projet Cisterciens et Ressources [Ressource en ligne], https://cisterciensetressources.lamop.fr
description: Inventaire des titres de propriété et des actes concernant les droits de l'abbaye de Morimond, Manuscrit n° 1, Bibliothèque municipale de Bourbonne-les-Bains, f. 070
SOFIA/HAWC+ Far-InfraRed Polarimetric Large Area CMZ Exploration (FIREPLACE) Survey I: General Results from the Pilot Program
Creators: name: Butterfield, Natalie O.
name: Chuss, David T.
name: Guerra, Jordan A.
name: Morris, Mark R.
name: Pare, Dylan
name: Wollack, Edward J.
name: Dowell, C. Darren
name: Hankins, Matthew J.
name: Karpovich, Kaitlyn
name: Siah, Javad
name: Staguhn, Johannes
name: Zweibel, Ellen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the first data release (DR1) of the Far-Infrared Polarimetric Large Area CMZ Exploration (FIREPLACE) survey. The survey was taken using the 214-micron band of the HAWC+ instrument with the SOFIA telescope (19.6$'$ resolution; 0.7 pc). In this first data release we present dust polarization observations covering a ~0.5$°$ region of the Galactic Center's Central Molecular Zone (CMZ), approximately centered on the Sgr B2 complex. We detect ~25,000 Nyquist-sampled polarization pseudovectors, after applying the standard SOFIA cuts for minimum signal-to-noise in fractional polarization and total intensity of 3 and 200, respectively. Analysis of the magnetic field orientation suggests a bimodal distribution in the field direction. This bimodal distribution shows enhancements in the distribution of field directions for orientations parallel and perpendicular to the Galactic plane, which is suggestive of a CMZ magnetic field configuration with polodial and torodial components. Furthermore, a detailed analysis of individual clouds included in our survey (i.e., Sgr B2, Sgr B2-NW, Sgr B2-Halo, Sgr B1, and Clouds-E/F) shows these clouds have fractional polarization values of 1--10% at 214-micron, with most of the emission having values $<$5%. A few of these clouds (i.e., Sgr B2, Clouds-E/F) show relatively low fractional polarization values toward the cores of the cloud, with higher fractional polarization values toward the less dense periphery. We also observe higher fractional polarization towards compact HII regions which could indicate an enhancement in the grain alignment in the dust surrounding these sources.
description: Accepted for publication in ApJ
Correlation between the transition temperature and the superfluid density in BCS superconductor NbB_2+x
Creators: name: Khasanov, R.
name: Shengelaya, A.
name: Maisuradze, A.
name: Di Castro, D.
name: Escamilla, R.
name: Keller, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The results of the muon-spin rotation experiments on BCS superconductors NbB_2+x (x = 0.2, 0.34) are reported. Both samples, studied in the present work, exhibit rather broad transitions to the superconducting state, suggesting a distribution of the volume fractions with different transition temperatures (T_c)'s. By taking these distributions into account, the dependence of the inverse squared zero-temperature magnetic penetration depth (λ_0^{-2}) on T_c was reconstructed for temperatures in the range 1.5K
description: 9 pages, 7 figures. Accepted for publication in Phys. Rev. B
A Layman's guide to SUSY GUTs
Creators: name: Lopez, J.
name: Nanopoulos, D.
name: Zichichi, A.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The determination of the most straightforward evidence for the existence of the Superworld requires a guide for non-experts (especially experimental physicists) for them to make their own judgement on the value of such predictions. For this purpose we review the most basic results of Super-Grand unification in a simple and clear way. We focus the attention on two specific models and their predictions. These two models represent an example of a direct comparison between a traditional unified-theory and a string-inspired approach to the solution of the many open problems of the Standard Model. We emphasize that viable models must satisfy {\em all} available experimental constraints and be as simple as theoretically possible. The two well defined supergravity models, $SU(5)$ and $SU(5)\times U(1)$, can be described in terms of only a few parameters (five and three respectively) instead of the more than twenty needed in the MSSM model, \ie, the Minimal Supersymmetric extension of the Standard Model. A case of special interest is the strict no-scale $SU(5)\times U(1)$ supergravity where all predictions depend on only one parameter (plus the top-quark mass). A general consequence of these analyses is that supersymmetric particles can be at the verge of discovery, lurking around the corner at present and near future facilities. This review should help anyone distinguish between well motivated predictions and predictions based on arbitrary choices of parameters in undefined models.
description: 25 pages, Latex, 11 figures (not included), CERN-TH.7077/93, CTP-TAMU-65/93. A complete ps file (1.31MB) with embedded figures is available by request from me@cryptons.tamu.edu
Additional file 7: of Identification of sonic hedgehog-regulated genes and biological processes in the cranial neural crest mesenchyme by comparative transcriptomics
Creators: name: Everson, Joshua
name: Fink, Dustin
name: Chung, Hannah
name: Sun, Miranda
name: Lipinski, Robert
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Computational Biology

description: RT-PCR validation of positively Shh-regulated genes in vivo. (PDF 113 kb)
Automated Importance Sampling via Optimal Control for Stochastic Reaction Networks: A Markovian Projection-based Approach
Creators: name: Hammouda, Chiheb Ben
name: Rached, Nadhir Ben
name: Tempone, Raúl
name: Wiechert, Sophia
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: Molecular Networks (q-bio.MN)
subject: Quantitative Methods (q-bio.QM)
subject: Computation (stat.CO)
subject: FOS: Mathematics
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences
subject: 60H35, 60J75, 65C05, 93E20

description: We propose a novel alternative approach to our previous work (Ben Hammouda et al., 2023) to improve the efficiency of Monte Carlo (MC) estimators for rare event probabilities for stochastic reaction networks (SRNs). In the same spirit of (Ben Hammouda et al., 2023), an efficient path-dependent measure change is derived based on a connection between determining optimal importance sampling (IS) parameters within a class of probability measures and a stochastic optimal control formulation, corresponding to solving a variance minimization problem. In this work, we propose a novel approach to address the encountered curse of dimensionality by mapping the problem to a significantly lower-dimensional space via a Markovian projection (MP) idea. The output of this model reduction technique is a low-dimensional SRN (potentially even one dimensional) that preserves the marginal distribution of the original high-dimensional SRN system. The dynamics of the projected process are obtained by solving a related optimization problem via a discrete $L^2$ regression. By solving the resulting projected Hamilton-Jacobi-Bellman (HJB) equations for the reduced-dimensional SRN, we obtain projected IS parameters, which are then mapped back to the original full-dimensional SRN system, resulting in an efficient IS-MC estimator for rare events probabilities of the full-dimensional SRN. Our analysis and numerical experiments reveal that the proposed MP-HJB-IS approach substantially reduces the MC estimator variance, resulting in a lower computational complexity in the rare event regime than standard MC estimators.
Why Empowering Communities is Key to Effective Climate Change and Disaster Risk Reduction
Creators: name: Oberti, Benedetta
name: Ravazzoli, Elisa
Publisher: name: Eurac Research
Year: 2025

description: From extreme floods to heatwaves, climate-related disasters are on the rise. Adapting to them is difficult, as they are unpredictable in an ever-changing climate. As the latest research shows, involving local communities could be part of the solution.
Machine learning reveals features of spinon Fermi surface
Creators: name: Zhang, Kevin
name: Feng, Shi
name: Lensky, Yuri D.
name: Trivedi, Nandini
name: Kim, Eun-Ah
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Machine Learning (cs.LG)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: With rapid progress in simulation of strongly interacting quantum Hamiltonians, the challenge in characterizing unknown phases becomes a bottleneck for scientific progress. We demonstrate that a Quantum-Classical hybrid approach (QuCl) of mining sampled projective snapshots with interpretable classical machine learning can unveil signatures of seemingly featureless quantum states. The Kitaev-Heisenberg model on a honeycomb lattice under external magnetic field presents an ideal system to test QuCl, where simulations have found an intermediate gapless phase (IGP) sandwiched between known phases, launching a debate over its elusive nature. We use the correlator convolutional neural network, trained on labeled projective snapshots, in conjunction with regularization path analysis to identify signatures of phases. We show that QuCl reproduces known features of established phases. Significantly, we also identify a signature of the IGP in the spin channel perpendicular to the field direction, which we interpret as a signature of Friedel oscillations of gapless spinons forming a Fermi surface. Our predictions can guide future experimental searches for spin liquids.
description: 9 pages + 7 pages supplemental