cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Classical versus quantum calculation of radiative electric quadrupole transition rates for hydrogenic states
Creators: name: Horbatsch, Michael
name: Horbatsch, Marko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The semiclassical Kepler-Coulomb problem and the quantum-mechanical Schrödinger-Coulomb problem are compared for their predictions of quadrupole E2 transitions. The semiclassical treatment involves an extension of previous work for the electric dipole transitions (Physical Review A 71, 020501), and rates are derived for $Δ\ell= 0, \pm 2$ transitions on the basis of the multipolar properties of the emitted radiation. For the quantum case a derivation is presented within the Schrödinger framework without reference to spin. Comparison of the E2 rates shows reasonable agreement, but not as good as was found for the electric dipole case.
description: 19 pages
Network Orchestration in Mobile Networks via a Synergy of Model-driven and AI-based Techniques
Creators: name: Wang, Yantong
name: Friderikos, Vasilis
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: As data traffic volume continues to increase, caching of popular content at strategic network locations closer to the end user can enhance not only user experience but ease the utilization of highly congested links in the network. A key challenge in the area of proactive caching is finding the optimal locations to host the popular content items under various optimization criteria. These problems are combinatorial in nature and therefore finding optimal and/or near optimal decisions is computationally expensive. In this paper a framework is proposed to reduce the computational complexity of the underlying integer mathematical program by first predicting decision variables related to optimal locations using a deep convolutional neural network (CNN). The CNN is trained in an offline manner with optimal solutions and is then used to feed a much smaller optimization problems which is amenable for real-time decision making. Numerical investigations reveal that the proposed approach can provide in an online manner high quality decision making; a feature which is crucially important for real-world implementations.
description: 6 pages, 3 figures, the conference accepted version
A new nearby pulsar wind nebula overlapping the RX J0852.0-4622 supernova remnant
Creators: name: Acero, F.
name: Gallant, Y.
name: Ballet, J.
name: Renaud, M.
name: Terrier, R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Energetic pulsars can be embedded in a nebula of relativistic leptons which is powered by the dissipation of the rotational energy of the pulsar. The object PSR J0855-4644 is an energetic and fast-spinning pulsar (Edot = 1.1x10^36 erg/s, P=65 ms) discovered near the South-East rim of the supernova remnant (SNR) RX J0852.0-4622 (aka Vela Jr) by the Parkes multibeam survey. The position of the pulsar is in spatial coincidence with an enhancement in X-rays and TeV gamma-rays, which could be due to its putative pulsar wind nebula (PWN). The purpose of this study is to search for diffuse non-thermal X-ray emission around PSR J0855-4644 to test for the presence of a PWN and to estimate the distance to the pulsar. An X-ray observation was carried out with the XMM-Newton satellite to constrain the properties of the pulsar and its nebula. The absorption column density derived in X-rays from the pulsar and from different regions of the rim of the SNR was compared with the absorption derived from the atomic (HI) and molecular (12CO) gas distribution along the corresponding lines of sight to estimate the distance of the pulsar and of the SNR. The observation has revealed the X-ray counterpart of the pulsar together with surrounding extended emission thus confirming the existence of a PWN. The comparison of column densities provided an upper limit to the distance of the pulsar PSR J0855-4644 and the SNR RX J0852.0-4622 (d<900 pc). Although both objects are at compatible distances, we rule out that the pulsar and the SNR are associated. With this revised distance, PSR J0855-4644 is the second most energetic pulsar, after the Vela pulsar, within a radius of 1 kpc and could therefore contribute to the local cosmic-ray e-/e+ spectrum.
description: 10 pages, 9 Figures. Accepted for publication in A&A
title: Andrea Schmidt, Stephan Westphalen, in collaboration with Sebastian Brock, Mat Immerzeel and Christine Strube, Christliche Wandmalereien in Syrien, Qara und das Kloster Mar Yakub
Creators: name: Waliszewski, Tomasz
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Andrea Schmidt, Stephan Westphalen, in collaboration with Sebastian Brock, Mat Immerzeel and Christine Strube, Christliche Wandmalereien in Syrien, Qara und das Kloster Mar Yakub. Sprachen und Kultur des Christlichen Orients, Band 14. Verlag Dr. Ludwig Reichert, Wiesbaden 2005. 240 pages, 44 figures, 26 plates, 20 colour plates.
Universal Law for the Elastic Moduli of Solids and Structures
Creators: name: Burns, S. J.
name: Burns, Sean P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A law previously found for shear moduli of crystalline materials is developed and extended to all elastic moduli in solids and structures. Shear moduli were previously shown to depend only on specific volume. The bulk moduli of many materials and structures are now predicted analytically and empirically shown with unerring accuracy by observing the elasticity as a specific volume power law. The law is supported by experimental evidence from: foams, Schneebeli 2-dimensional graphene mats, metamaterials, fully dense metals, ceramics and minerals. This new, generalized, universal, elastic moduli law always describes materials that support shear stresses i.e., solids; it is shown that all elastic moduli are directly dependent only on the specific volume.
description: 22 pages, 8 figures, 1 Table and 1 Appendix
Hidden Symmetries, the Bianchi Classification and Geodesics of the Quantum Geometric Ground-State Manifolds
Creators: name: Liska, Diego
name: Gritsev, Vladimir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the Killing vectors of the quantum ground-state manifold of a parameter-dependent Hamiltonian. We find that the manifold may have symmetries that are not visible at the level of the Hamiltonian and that different quantum phases of matter exhibit different symmetries. We propose a Bianchi-based classification of the various ground-state manifolds using the Lie algebra of the Killing vector fields. Moreover, we explain how to exploit these symmetries to find geodesics and explore their behaviour when crossing critical lines. We briefly discuss the relation between geodesics, energy fluctuations and adiabatic preparation protocols. Our primary example is the anisotropic transverse-field Ising model. We also analyze the Ising limit and find analytic solutions to the geodesic equations for both cases.
description: 11 pages, 5 figures. Typos corrected, modified figures and added references
State, global and local parameter estimation using local ensemble Kalman filters: applications to online machine learning of chaotic dynamics
Creators: name: Malartic, Quentin
name: Farchi, Alban
name: Bocquet, Marc
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Chaotic Dynamics (nlin.CD)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In a recent methodological paper, we showed how to learn chaotic dynamics along with the state trajectory from sequentially acquired observations, using local ensemble Kalman filters. Here, we more systematically investigate the possibility to use a local ensemble Kalman filter with either covariance localisation or local domains, in order to retrieve the state and a mix of key global and local parameters. Global parameters are meant to represent the surrogate dynamical core, for instance through a neural network, which is reminiscent of data-driven machine learning of dynamics, while the local parameters typically stand for the forcings of the model. Aiming at joint state and parameter estimation, a family of algorithms for covariance and local domain localisation is proposed. In particular, we show how to rigorously update global parameters using a local domain ensemble Kalman filter (EnKF) such as the local ensemble transform Kalman filter (LETKF), an inherently local method. The approach is tested with success on the 40-variable Lorenz model using several of the local EnKF flavors. A two-dimensional illustration based on a multi-layer Lorenz model is finally provided. It uses radiance-like non-local observations. It features both local domains and covariance localisation in order to learn the chaotic dynamics and the local forcings. This paper more generally addresses the key question of online estimation of both global and local model parameters.
Supershear surface waves reveal prestress and anisotropy of soft materials
Creators: name: Li, Guo-Yang
name: Feng, Xu
name: Ramier, Antoine
name: Yun, Seok-Hyun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Surface waves play important roles in many fundamental and applied areas from seismic detection to material characterizations. Supershear surface waves with propagation speeds greater than bulk shear waves have recently been reported, but their properties are not well understood. In this Letter, we describe theoretical and experimental results on supershear surface waves in rubbery materials. We find that supershear surface waves can be supported in viscoelastic materials with no restriction on the shear quality factor. Interestingly, the effect of prestress on the speed of the supershear surface wave is opposite to that of the Rayleigh surface wave. Furthermore, anisotropy of material affects the supershear wave much more strongly than the Rayleigh surface wave. We offer heuristic interpretation as well as theoretical verification of our experimental observations. Our work points to the potential applications of supershear waves for characterizing the bulk mechanical properties of soft solid from the free surface.
Multi-channel modeling and two photon coherent transfer paths in NaK
Creators: name: Schulze, T. A.
name: Temelkov, I. I.
name: Gempel, M. W.
name: Hartmann, T.
name: Knöckel, H.
name: Ospelkaus, S.
name: Tiemann, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We explore possible pathways for the creation of ultracold polar NaK molecules in their absolute electronic and rovibrational ground state starting from ultracold Feshbach molecules. In particular, we present a multi-channel analysis of the electronic ground and K(4p)+Na(3s) excited state manifold of NaK, analyze the spin character of both the Feshbach molecular state and the electronically excited intermediate states and discuss possible coherent two-photon transfer paths from Feshbach molecules to rovibronic ground state molecules. The theoretical study is complemented by the demonstration of STIRAP transfer from the X^1Σ^+ (v=0) state to the a^3Σ^+ manifold on a molecular beam experiment.
description: 10 pages, 9 figures
Local Luminous Infrared Galaxies. III. Co-evolution of Black Hole Growth and Star Formation Activity?
Creators: name: Alonso-Herrero, Almudena
name: Pereira-Santaella, Miguel
name: Rieke, George H.
name: Diamond-Stanic, Aleksandar M.
name: Wang, Yiping
name: Hernan-Caballero, Antonio
name: Rigopoulou, Dimitra
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Local luminous infrared (IR) galaxies (LIRGs) have both high star formation rates (SFR) and a high AGN (Seyfert and AGN/starburst composite) incidence. Therefore, they are ideal candidates to explore the co-evolution of black hole (BH) growth and star formation (SF) activity, not necessarily associated with major mergers. Here, we use Spitzer/IRS spectroscopy of a complete volume-limited sample of local LIRGs (distances of <78Mpc). We estimate typical BH masses of 3x10^7 M_sun using [NeIII]15.56micron and optical [OIII]5007A gas velocity dispersions and literature stellar velocity dispersions. We find that in a large fraction of local LIRGs the current SFR is taking place not only in the inner nuclear ~1.5kpc region, as estimated from the nuclear 11.3micron PAH luminosities, but also in the host galaxy. We next use the ratios between the SFRs and BH accretion rates (BHAR) to study whether the SF activity and BH growth are contemporaneous in local LIRGs. On average, local LIRGs have SFR to BHAR ratios higher than those of optically selected Seyferts of similar AGN luminosities. However, the majority of the IR-bright galaxies in the RSA Seyfert sample behave like local LIRGs. Moreover, the AGN incidence tends to be higher in local LIRGs with the lowest SFRs. All this suggests that in local LIRGs there is a distinct IR-bright star forming phase taking place prior to the bulk of the current BH growth (i.e., AGN phase). The latter is reflected first as a composite and then as a Seyfert, and later as a non-LIRG optically identified Seyfert nucleus with moderate SF in its host galaxy.
description: Accepted for publication in ApJ
The local Poincaré problem for irreducible branches
Creators: name: Cano, José
name: Ayuso, Pedro Fortuny
name: Ribón, Javier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 32S05 (Primary), 32S65 (Primary), 14H20 (Secondary)

description: Let ${\mathcal F}$ be a germ of holomorphic foliation defined in a neighborhood of the origin of ${\mathbb C}^{2}$ that has a germ of irreducible holomorphic invariant curve $γ$. We provide a lower bound for the vanishing multiplicity of ${\mathcal F}$ at the origin in terms of the equisingularity class of $γ$. Moreover, we show that such a lower bound is sharp. Finally, we characterize the types of dicritical singularities for which the multiplicity of $\mathcal{F}$ can be bounded in terms of that of $γ$ and provide an explicit bound in this case.
description: 18 pages, 5 figures, accepted for publication in Revista Matem\'atica Iberoamericana
Effective Marking Equivalence Checking in Systems with Dynamic Process Creation
Creators: name: Fronc, Łukasz
Publisher: name: arXiv
Year: 2013
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: D.2.4

description: The starting point of this work is a framework allowing to model systems with dynamic process creation, equipped with a procedure to detect symmetric executions (ie., which differ only by the identities of processes). This allows to reduce the state space, potentially to an exponentially smaller size, and, because process identifiers are never reused, this also allows to reduce to finite size some infinite state spaces. However, in this approach, the procedure to detect symmetries does not allow for computationally efficient algorithms, mainly because each newly computed state has to be compared with every already reached state. In this paper, we propose a new approach to detect symmetries in this framework that will solve this problem, thus enabling for efficient algorithms. We formalise a canonical representation of states and identify a sufficient condition on the analysed model that guarantees that every symmetry can be detected. For the models that do not fall into this category, our approach is still correct but does not guarantee a maximal reduction of state space.
description: In Proceedings Infinity 2012, arXiv:1302.3105
A Survey of Deep Learning for Data Caching in Edge Network
Creators: name: Wang, Yantong
name: Friderikos, Vasilis
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The concept of edge caching provision in emerging 5G and beyond mobile networks is a promising method to deal both with the traffic congestion problem in the core network as well as reducing latency to access popular content. In that respect end user demand for popular content can be satisfied by proactively caching it at the network edge, i.e, at close proximity to the users. In addition to model based caching schemes learning-based edge caching optimizations has recently attracted significant attention and the aim hereafter is to capture these recent advances for both model based and data driven techniques in the area of proactive caching. This paper summarizes the utilization of deep learning for data caching in edge network. We first outline the typical research topics in content caching and formulate a taxonomy based on network hierarchical structure. Then, a number of key types of deep learning algorithms are presented, ranging from supervised learning to unsupervised learning as well as reinforcement learning. Furthermore, a comparison of state-of-the-art literature is provided from the aspects of caching topics and deep learning methods. Finally, we discuss research challenges and future directions of applying deep learning for caching
title: An Influence of Dynamic Capability to Corporate Performance
Creators: name: Saenchaiyathon, Krittapha
name: Liengjindathaworn, Sirintorn
Publisher: name: TEM Journal
Year: 2019

description: Performance of a company is typically considered and concerned in the present. The purpose of this study is to examine the relationship model among the constructs, namely dynamic capability, corporate image, innovativeness and corporate performance. The mail questionnaires were distributed, and 112 companies were returned for a total response rate of 32%. The method of partial least squares structural equation modeling (PLS-SEM) was employed to analyze the data. It found that dynamic capability affected directly the effects of innovativeness, and indirectly the effects of corporate image. Moreover, innovativeness and corporate image affected corporate performance.

Keywords –corporate image, corporate performance, dynamic capability, innovativeness, PLS-SEM.
Quantum field-theoretical description of neutrino oscillations in magnetic field
Creators: name: Egorov, Vadim
name: Volobuev, Igor
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: It is shown that the processes of neutrino oscillations in a magnetic field can be consistently described in the framework of a new quantum field-theoretical approach without use of the neutrino flavor states. It is based on the Feynman diagram technique with a modified distance-dependent propagator, which takes into account the geometry of neutrino oscillation experiments. Processes of neutrino oscillations in a magnetic field, where the neutrinos are detected through the weak charged- and neutral-current interaction, have been studied and numerical calculations have been carried out for some specific examples. Implications for the solar neutrinos are briefly discussed, and formulas for the asymptotic values of the normalized probability of solar neutrino oscillation processes are derived, which coincide with the observable ratio of the measurable neutrino flux to that predicted by the standard solar model.
description: 21 pages, 10 figures
Spatial ecology of an apex predator, the perentie, in arid Australia
Creators: name: Soennichsen, Kari Franziska
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Animals are thought to use space non-randomly in relation to key resources that may change over time. Understanding these movements and the space use of wide-ranging species is particularly challenging. I studied the spatial ecology of Australia’s largest lizard, the perentie (Varanus giganteus), in the southwest Northern Territory of Australia using radio telemetry. I asked how home range size varies intraspecifically and examined the effect of individual (sex, mass and snout-vent-length) and environmental factors (month, season, mean temperature, rainfall) on the temporal movement patterns in 25 perenties over a 25-month period using minimum convex polygon and kernel density home range estimates. The perenties were highly mobile with home ranges among the largest recorded for terrestrial ectotherms. Male perenties had significantly larger home ranges and travelled longer daily distances compared to females. Home ranges for both sexes frequently overlapped spatially and were consistent across multiple years. Minimum temperature was a significant predictor for monthly variation in daily distances travelled, underscoring the importance of temperature for perentie movement. This study provides novel insight into the ecology of the perentie, an apex reptilian predator. Its extensive space use challenges our perception of the energetics and movement patterns of large predatory reptiles.
The convergence of the Stochastic Gradient Descent (SGD) : a self-contained proof
Creators: name: Turinici, Gabrel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Probability (math.PR)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We give here a proof of the convergence of the Stochastic Gradient Descent (SGD) in a self-contained manner.
Shubnikov-de Haas Oscillations and Nontrivial Topological State in a New Weyl Semimetal Candidate SmAlSi
Creators: name: Xu, Longmeng
name: Niu, Haoyu
name: Bai, Yuming
name: Zhu, Haipeng
name: Yuan, Songliu
name: He, Xiong
name: Yang, Yang
name: Xia, Zhengcai
name: Zhao, Lingxiao
name: Tian, Zhaoming
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We perform the quantum magnetotransport measurements and first-principles calculations on high quality single crystals of SmAlSi, a new topological Weyl semimetal candidate. At low temperatures, SmAlSi exhibits large non-saturated magnetoresistance (MR)~5200% (at 2 K, 48 T) and prominent Shubnikov-de Haas (SdH) oscillations, where MRs follow the power-law field dependence with exponent 1.52 at low fields (μ0H < 15 T) and linear behavior 1 under high fields (μ0H > 18 T). The analysis of angle dependent SdH oscillations reveal two fundamental frequencies originated from the Fermi surface (FS) pockets with non-trivial π Berry phases, small cyclotron mass and electron-hole compensation with high mobility at 2 K. In combination with the calculated nontrivial electronic band structure, SmAlSi is proposed to be a paradigm for understanding the Weyl fermions in the topological materials.
description: 15 pages, 7 figures
The regularized free fall II -- Homology computation via heat flow
Creators: name: Frauenfelder, Urs
name: Weber, Joa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Symplectic Geometry (math.SG)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53Dxx

description: In [BOV20] Barutello, Ortega, and Verzini introduced a non-local functional which regularizes the free fall. This functional has a critical point at infinity and therefore does not satisfy the Palais-Smale condition. In this article we study the $L^2$ gradient flow which gives rise to a non-local heat flow. We construct a rich cascade Morse complex which has one generator in each degree $k\ge 1$. Calculation reveals a rather poor Morse homology having just one generator. In particular, there must be a wealth of solutions of the heat flow equation. These can be interpreted as solutions of the Schrödinger equation after a Wick rotation.
description: 19 pages, 3 figures
Admissible-level $\mathfrak{sl}_3$ minimal models
Creators: name: Kawasetsu, Kazuya
name: Ridout, David
name: Wood, Simon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Algebra (math.QA)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The first part of this work uses the algorithm recently detailed in arXiv:1906.02935 to classify the irreducible weight modules of the minimal model vertex operator algebra $L_k(\mathfrak{sl}_3)$, when the level $k$ is admissible. These are naturally described in terms of families parametrised by up to two complex numbers. We also determine the action of the relevant group of automorphisms of $\hat{\mathfrak{sl}}_3$ on their isomorphism classes and compute explicitly the decomposition into irreducibles when a given family's parameters are permitted to take certain limiting values. Along with certain character formulae, previously established in arXiv:2003.10148, these results form the input data required by the standard module formalism to consistently compute modular transformations and, assuming the validity of a natural conjecture, the Grothendieck fusion coefficients of the admissible-level $\mathfrak{sl}_3$ minimal models. The second part of this work applies the standard module formalism to compute these explicitly when $k=-\frac32$. We expect that the methodology developed here will apply in much greater generality.
description: 34 pages, 5 figures; v2: 37 pages, 5 figures, updated refs, added explanations and discussed relationship with other interesting VOAs
title: Geolocation in a Library using Augmented Reality
Creators: name: Reyes Ruiz, Gerardo
name: Hernández Hernández, Marisol
name: Olmos Peña, Samuel
Publisher: name: TEM Journal
Year: 2019

description: Libraries are educational spaces in which it is important to have novel information resources that invite users to delve into them, and consult physical learning resources in an efficient, novel and attractive way. New technologies have entered into different educational environments, which means that Augmented Reality allows the creation of new and attractive digital search environments that help the location of bibliographic material. The RA facilitates this geolocation, since it shows through a digital content the three-dimensional space of the environment, highlighting the categories and classifications of the physical references that are desired to consult, so that the user can locate them quickly and consequently. They can be directed in a relatively short time to the exact location in which the references are.

Keywords –Augmented reality, new technologies, digital environments, libraries, computing resources.
Differential Batalin-Vilkovisky algebras arising from twilled Lie-Rinehart algebras
Creators: name: Huebschmann, Johannes
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B55, 17B56, 17B65, 17B66, 17B70, 17B71, 32G05, 53C05, 53C15, 81T70

description: Twilled L(ie-)R(inehart)-algebras generalize, in the Lie-Rinehart context, complex structures on smooth manifolds. An almost complex manifold determines an "almost twilled pre-LR algebra", which is a true twilled LR-algebra iff the almost complex structure is integrable. We characterize twilled LR structures in terms of certain associated differential (bi)graded Lie and G(erstenhaber)-algebras; in particular the G-algebra arising from an almost complex structure is a d(ifferential) G-algebra iff the almost complex structure is integrable. Such G-algebras, endowed with a generator turning them into a B(atalin-)V(ilkovisky)-algebra, occur on the B-side of the mirror conjecture. We generalize a result of Koszul to those dG-algebras which arise from twilled LR-algebras. A special case thereof explains the relationship between holomorphic volume forms and exact generators for the corresponding dG-algebra and thus yields in particular a conceptual proof of the Tian-Todorov lemma. We give a differential homological algebra interpretation for twilled LR-algebras and by means of it we elucidate the notion of generator in terms of homological duality for differential graded LR-algebras.
description: 15 pages. arXiv admin note: substantial text overlap with arXiv:math/9811069
title: Mehr durfte nicht getan werden. Die Beschneidung Christi von Johann Jakob (?) Kellner, 1837, nach einem Kupferstich aus dem Zyklus des Marienlebens von Hendrik Goltzius, 1594
Creators: name: Ulmann, Arnulf Von
Publisher: name: University Library Heidelberg
Year: 2016

description: [nicht vorhanden / not available]
Area quasi-minimizing partitions with a graphical constraint: relaxation and two-dimensional partial regularity
Creators: name: Bonacini, Marco
name: Cristoferi, Riccardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider a variational model for periodic partitions of the upper half-space into three regions, where two of them have prescribed volume and are subject to the geometrical constraint that their union is the subgraph of a function, whose graph is a free surface. The energy of a configuration is given by the weighted sum of the areas of the interfaces between the different regions, and a general volume-order term. We establish existence of minimizing configurations via relaxation of the energy involved, in any dimension. Moreover, we prove partial regularity results for volume-constrained minimizers in two space dimensions. Thin films of diblock copolymers are a possible application and motivation for considering this problem.
Spontaneous creation of Kibble-Zurek solitons in a Bose-Einstein condensate
Creators: name: Lamporesi, Giacomo
name: Donadello, Simone
name: Serafini, Simone
name: Dalfovo, Franco
name: Ferrari, Gabriele
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: When a system crosses a second-order phase transition on a finite timescale, spontaneous symmetry breaking can cause the development of domains with independent order parameters, which then grow and approach each other creating boundary defects. This is known as Kibble-Zurek mechanism. Originally introduced in cosmology, it applies both to classical and quantum phase transitions, in a wide variety of physical systems. Here we report on the spontaneous creation of solitons in Bose-Einstein condensates via the Kibble-Zurek mechanism. We measure the power-law dependence of defects number with the quench time, and provide a check of the Kibble-Zurek scaling with the sonic horizon. These results provide a promising test bed for the determination of critical exponents in Bose-Einstein condensates.
description: 7 pages, 4 figures
Shelling the m=1 amplituhedron
Creators: name: Karp, Steven N.
name: Machacek, John
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 06A07, 14M15, 81T60, 05A19

description: The amplituhedron $\mathcal{A}_{n,k,m}$ was introduced by Arkani-Hamed and Trnka (2014) in order to give a geometric basis for calculating scattering amplitudes in planar $\mathcal{N}=4$ supersymmetric Yang-Mills theory. It is a projection inside the Grassmannian $\text{Gr}_{k,k+m}$ of the totally nonnegative part of $\text{Gr}_{k,n}$. Karp and Williams (2019) studied the $m=1$ amplituhedron $\mathcal{A}_{n,k,1}$, giving a regular CW decomposition of it. Its face poset $R_{n,l}$ (with $l := n-k-1$) consists of all projective sign vectors of length $n$ with exactly $l$ sign changes. We show that $R_{n,l}$ is EL-shellable, resolving a problem posed by Karp and Williams. This gives a new proof that $\mathcal{A}_{n,k,1}$ is homeomorphic to a closed ball, which was originally proved by Karp and Williams. We also give explicit formulas for the $f$-vector and $h$-vector of $R_{n,l}$, and show that it is rank-log-concave and strongly Sperner. Finally, we consider a related poset $P_{n,l}$ introduced by Machacek (2019), consisting of all projective sign vectors of length $n$ with at most $l$ sign changes. We show that it is rank-log-concave, and conjecture that it is Sperner.
description: 20 pages. v2: Minor changes
ZAMONAVIY INGLIZ TILIDAGI NEOLOGIZMLAR: IJTIMOIY TARMOQLAR TA'SIRI
Creators: name: Suyarova, Sug'diyona
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqola zamonaviy ingliz tilidagi neologizmlarning shakllanishida ijtimoiy tarmoqlarning ta'sirini o'rganadi. Tadqiqot adabiyotlar tahlili orqali amalga oshirilgan bo'lib, ijtimoiy media platformalarining til evolyutsiyasidagi rolini, yangi so'z va iboralarning paydo bo'lish mexanizmlarini, hamda ularning kundalik muloqotga ta'sirini ko'rib chiqadi. Natijalar ijtimoiy tarmoqlarning neologizmlar yaratilishi va tarqalishida muhim rol o'ynashini ko'rsatadi.
title: The Effect of pH, Electrical Conductivity, and Nitrogen (N) in the Soil at Yogyakarta Special  Region on Tomato Plant Growth
Creators: name: Putranta, Himawan
name: Karima Permatasari, Arum
name: Afidah Sukma, Trisya
name: Suparno, Suparno
name: Brams Dwandaru, Wipsar Sunu
Publisher: name: TEM Journal
Year: 2019

description: The purpose of this study was to determine the effect of pH, electrical conductivity, and nitrogen content in the soil of five cities in Yogyakarta Special Region considering the growth of tomato plants. This study was conducted using quantitative methods and observations on the growth of tomato plants. The results showed that pH, electrical conductivity (EC), and soil nitrogen (N) elements originating from Yogyakarta were in accordance with the theory for tomato plant growth which were (5.380 ± 0.005), (284.0 ± 0.5) × 𝟏𝟎−𝟑 mS/cm, and (264.680 ± 0.005) ppm, respectively. Based on these results, the growth of tomatoes planted using the soil samples from Yogyakarta in terms of plant height, leaf length, and leaf width was more optimal. However, the tomato plant stem diameter growths from the five soil samples are relatively the same about 0.38-0.30 cm.

Keywords –pH, electrical conductivity, soil nitrogen element, tomato plant growth.
title: Jürgen Krüger: Kirchen in Karlsruhe und die Synagoge. Mit Beiträgen von Kurt Kramer, Susanne Labsch, Tobias Licht, Thomas Schalla
Creators: name: Kieser, Clemens
Publisher: name: University Library Heidelberg
Year: 2016

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 45, Nr. 2 (2016), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Comparing proteins by their internal dynamics: exploring structure-function relationships beyond static structural alignments
Creators: name: Micheletti, C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The growing interest for comparing protein internal dynamics owes much to the realization that protein function can be accompanied or assisted by structural fluctuations and conformational changes. Analogously to the case of functional structural elements, those aspects of protein flexibility and dynamics that are functionally oriented should be subject to evolutionary conservation. Accordingly, dynamics-based protein comparisons or alignments could be used to detect protein relationships that are more elusive to sequence and structural alignments. Here we provide an account of the progress that has been made in recent years towards developing and applying general methods for comparing proteins in terms of their internal dynamics and advance the understanding of the structure-function relationship.
description: Review article, 24 pages, 10 figures. Journal article in "Physics of Life Reviews" available at http://dx.doi.org/10.1016/j.plrev.2012.10.009 along with several commentaries
On a new class of Laguerre-Pólya type functions with applications in number theory
Creators: name: Wagner, Ian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We define a new class of functions, connected to the classical Laguerre-Pólya class, which we call the shifted Laguerre-Pólya class. Recent work of Griffin, Ono, Rolen, and Zagier shows that the Riemann Xi function is in this class. We prove that a function being in this class is equivalent to the Taylor coefficients, once shifted, being a degree $d$ multiplier sequence for every $d$, which is equivalent to shifted coefficients satisfying all of the higher Túran inequalities. This mirrors a classical result of Pólya and Schur. We further show some order derivative of a function in this class satisfies each extended Laguerre inequality. Finally, we discuss some old and new conjectures about iterated inequalities for functions in this class.
Energy-Efficient Proactive Caching with Multipath Routing
Creators: name: Wang, Yantong
name: Friderikos, Vasilis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The ever-continuing explosive growth of on-demand content distribution has imposed great pressure on mobile/wireless network infrastructures. To ease congestion in the network and to increase perceived user experience, caching of popular content closer to the end-users can play a significant role and as such this issue has received significant attention over the last few years. Additionally, energy efficiency is treated as a fundamental requirement in the design of next-generation mobile networks. However, there has been little attention to the overlapping area between energy efficiency and network caching especially when considering multipath routing. To this end, this paper proposes an energy-efficient caching with multipath routing support. The proposed scheme provides a joint anchoring of popular content into a set of potential caching nodes with optimized multipath support whilst ensuring a balance between transmission and caching energy cost. The proposed model also considers different content delivery modes, such as multicast and unicast. Two separated Integer-Linear Programming (ILP) models are formulated for each delivery mode. To tackle the curse of dimensionality we then provide a greedy simulated annealing algorithm, which not only reduces the time complexity but also provides a competitive performance. A wide set of numerical investigations reveal that the proposed scheme reduces the energy consumption up to 80% compared with other widely used caching approaches under the premise of network resource limitation. Sensitivity analysis to different parameters is also meticulously discussed in this paper.
description: 23 pages, 4 figures, 3 tables; typos corrected, references added, Introduction & Numerical Investigations updated
title: The Automation of Mobile Application to Manage the Rice Fields
Creators: name: Kularbphettong, Kunyanuth
name: Phoso, Wannaporn
name: Roonrakwit, Pattarapan
Publisher: name: TEM Journal
Year: 2019

description: The Internet of Things becomes increasingly prevalent. It is the inter-networking of physical devices and connected devices together. Soil and water management play an important role in the Agricultural smart farming. In this paper, the prototype of automation system for measuring and monitoring soil and water was developed to control the pH of the water, the level of water in the rice field by using the Internet of Things (IoT), and mobile computing technologies. The results found show that the system can solve the flood problem in the rice fields during the rainy season, and control the pH of water and soil for growing rice. They also suggest the farmers how to prepare the field to cultivate rice.

Keywords –Automation system, Internet of Things (IoT), Soil and Water Management, Cloud, Mobile Application.
title: Analysis regarding Dynamic Parameters of the Milling Head Bearings
Creators: name: Kočiško, Marek
name: Bašistová, Anna
name: Tkáč, Jozef
Publisher: name: TEM Journal
Year: 2019

description: The quality of a lubricant used is a significant factor in the service life of bearings in operation. Nowadays, the development in the field of lubricants is advanced, and opens up additional possibilities for customers to extend the service life of the bearings. This paper deals with the parsing of the high-speed bearing of the milling head in the CNC milling cutter. The state of the bearings and contact surfaces was determined by the measurements and the analysis which was performed in order to assess the abrasion mode.

Keywords –Bearings, micro-geometry, vibration.
Quantum Electrodynamics with a Nonmoving Dielectric Sphere: Quantizing Lorenz-Mie Scattering
Creators: name: Maurer, Patrick
name: Gonzalez-Ballestero, Carlos
name: Romero-Isart, Oriol
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We quantize the electromagnetic field in the presence of a nonmoving dielectric sphere in vacuum. The sphere is assumed to be lossless, dispersionless, isotropic, and homogeneous. The quantization is performed using normalized eigenmodes as well as plane-wave modes. We specify two useful alternative bases of normalized eigenmodes: spherical eigenmodes and scattering eigenmodes. A canonical transformation between plane-wave modes and normalized eigenmodes is derived. This formalism is employed to study the scattering of a single photon, coherent squeezed light, and two-photon states off a dielectric sphere. In the latter case we calculate the second-order correlation function of the scattered field, thereby unveiling the angular distribution of the Hong-Ou-Mandel interference for a dielectric sphere acting as a three-dimensional beam splitter. Our results are analytically derived for an arbitrary size of the dielectric sphere with a particular emphasis on the small-particle limit. This work sets the theoretical foundation for describing the quantum interaction between light and the motional, rotational and vibrational degrees of freedom of a dielectric sphere.
description: 19 pages, 3 figures
title: Ernst Gall, Karolingische und ottonische Kirchen
Creators: name: Krautheimer, Richard
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Ernst Gall, Karolingische und ottonische Kirchen. Deutsche Bauten, 17. Band, hrsg. von Hermann Giesau. Verlag Aug. Hopfer, Burg b. Magdeburg 1930. 62 S., 54 Abb., 4Taf.
$SU$-linear operations in complex cobordism and the $c_1$-spherical bordism theory
Creators: name: Chernykh, Georgy
name: Panov, Taras
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55N22, 57R77

description: We study the $SU$-linear operations in complex cobordism and prove that they are generated by the well-known geometric operations $\partial_i$. For the theory $W$ of $c_1$-spherical bordism, we describe all $SU$-linear multiplications on $W$ and projections $MU \to W$. We also analyse complex orientations on $W$ and the corresponding formal group laws $F_W$. The relationship between the formal group laws $F_W$ and the coefficient ring $\varOmega^W$ of the $W$-theory was studied by Buchstaber in 1972. We extend his results by showing that for any $SU$-linear multiplication and orientation on $W$, the coefficients of the corresponding formal group law $F_W$ do not generate the ring $\varOmega^W$, unlike the situation with complex bordism.
description: 25 pages, published version
On isolated log canonical centers
Creators: name: Chou, Chih-Chi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: In this paper, we show that the depth of an isolated log canonical center is determined by the cohomology of the -1 discrepancy diviors over it. A similar result also holds for normal isolated Du Bois singularities.
description: To appear in Kyoto Journal of Mathematics
Filipendula hexapetala Gilib.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: F.hexapetala Gilib. (S. Filipendula L., U. FiUpendula Hill) Cat. 84. Bis etwa 1720m. l: «Les Semilles» bei Monthey (Defago). - 2: Zwischen St-Maurice-de-Laques und Randogne (Zwicky); ob Montana (Knetsch); Salgesch (Becherer); Naters-Geimen (B. B. T. Z.). - 3:Unterster Teil des Pfynwaldes (Marietan); ob Saas-Grund an der neuen Strasse nach Fee, etwa 1720m, ein Exemplar (Hirschmann); Visp-Glis (Becherer, Zwicky). - 3a: Gondo, zwei Stellen (Becherer); die eine heute durch den Bau des Kraftwerkes zerstört. - 4: Schinnern im Binntal. etwa 1700m (Binz).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
title: Gerda Bernhard, Das nördliche Rheinhessen
Creators: name: Schumacher, Karl
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Gerda Bernhard, Das nördliche Rheinhessen. Wechselbeziehungen zwischen Mensch und Landschaft in historischen Querschnitten. Gießen 1931, 158 Seiten, 13 Textabb., 9 Karten.
A Gravitational Lens Model for the Lya Emitter, LAE 221724+001716 at z=3.1 in the SSA 22 Field
Creators: name: Nakahiro, Y.
name: Taniguchi, Y.
name: Inoue, A. K.
name: Shioya, Y.
name: Kajisawa, M.
name: Kobayashi, M. A. R.
name: Iwata, I.
name: Matsuda, Y.
name: Hayashino, T.
name: Tanaka, A. R.
name: Hamada, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: During the course of our Lyman continuum imaging survey, we found that the spectroscopically confirmed Lya emitter LAE 221724+001716 at z = 3.10 in the SSA 22 field shows strong Lyman continuum emission (lambda_rest ~ 900 A) that escapes from this galaxy. However, another recent spectroscopic survey revealed that the supposed Lyman continuum emission could arise from a foreground galaxy at z = 1.76 if the emission line newly detected from the galaxy at lambda_obs ~ 3360 A is Lya. If this is the case, as the angular separation between these two galaxies is very small (~ 0.6"), LAE 221724+001716 at z = 3.10 could be amplified by the gravitational lensing caused by this intervening galaxy. Here we present a possible gravitational lens model for the system of LAE 221724+001716. First, we estimate the stellar mass of the intervening galaxy as Mstar ~ 3.5x10^9 Msun from its UV luminosity and ~ 3.0x10^7--2.4x10^9 Msun through the SED fitting. Then, we find that the gravitational magnification factor ranges from 1.01 to 1.16 using the so-called singular isothermal sphere model for strong lensing. While LAE 221724+001716 is the first system of an LAE-LAE lensing reported so far, the estimated magnification factor is not so significant because the stellar mass of the intervening galaxy is small.
description: 5 pages including 3 figures and 1 table, accepted for publication in ApJ on 13 Feb. 2013