cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Coherence and Screening in Multi-Electron Spin Qubits
Creators: name: Higginbotham, A. P.
name: Kuemmeth, F.
name: Hanson, M. P.
name: Gossard, A. C.
name: Marcus, C. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The performance of multi-electron spin qubits is examined by comparing exchange oscillations in coupled single-electron and multi-electron quantum dots in the same device. Fast (> 1 GHz) exchange oscillations with a quality factor Q > 15 are found for the multi-electron case, compared to Q ~ 2 for the single-electron case, the latter consistent with previous experiments. A model of dephasing that includes voltage and hyperfine noise is developed that is in good agreement with both single- and multi-electron data, though in both cases additional exchange-independent dephasing is needed to obtain quantitative agreement across a broad parameter range.
description: Supplemental Material here: https://dl.dropboxusercontent.com/u/1742676/Higg_Supplement.pdf
Olgiati, Francesco, El concepto de juridicidad en Santo Tomás de Aquino. Ed. EUNSA. 1 vol. de 363 ps. 140x210. Pamplona. 1977
Creators: name: Marques, José A.
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
Density Functional description of spin, lattice, and spin-lattice dynamics in antiferromagnetic and paramagnetic phases at finite temperatures
Creators: name: Gambino, Davide
name: Malyi, Oleksandr I.
name: Wang, Zhi
name: Alling, Björn
name: Zunger, Alex
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Describing the (a) electronic and magnetic properties (EMP) of antiferromagnetic or paramagnetic phases of compounds generally requires the knowledge of (b) the spin configurations and lattice structure (SCLS) of such phases at a given temperature. Indeed, studying the coupling between (a) and (b) has been an outstanding challenge in the theory of magnetism. The traditional approach to electronic phases of matter has generally focused on solving the problem of EMP regarding the SCLS as a spectator degree of freedom (DOF). Yet, it has been recognized that EMP of a compound generally respond self-consistently to changes in SCLS and vice versa. We construct here a practical, density functional theory (DFT)-based approach that provides the SCLS as a function of temperature, involving the description of spin, lattice, and spin-lattice dynamics of different magnetic phases. We distinguish three Levels of dynamics: (I) dynamics of the spin DOF treated via noncollinear Heisenberg Monte-Carlo with exchange energies from DFT, (II) dynamics of the lattice DOF treated by ab initio molecular dynamics (AIMD) employing a fixed spin configuration from Level I at the simulated temperature, and (III) coupling of spin and lattice dynamics via Landau-Lifshitz-Gilbert spin dynamics combined with AIMD. Such SCLS at each of the three levels are used as inputs to DFT supercell calculations, providing the EMP at each temperature. The results of this sequence include electronic band structures, band gaps, density of states, as well as the statistical distribution of local moments and the short-range order parameters, each as a function of temperature. Using NiO as a test case, we address the separability of the DOF in magnetic insulators for a minimal description of electronic and magnetic properties, demonstrating that inclusion of spin dynamics and, to some level, lattice dynamics is enough to explain the EMP.
Making sense of complex systems through resolution, relevance, and mapping entropy
Creators: name: Holtzman, Roi
name: Giulini, Marco
name: Potestio, Raffaello
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Complex systems are characterised by a tight, nontrivial interplay of their constituents, which gives rise to a multi-scale spectrum of emergent properties. In this scenario, it is practically and conceptually difficult to identify those degrees of freedom that mostly determine the behaviour of the system and separate them from less prominent players. Here, we tackle this problem making use of three measures of statistical information: resolution, relevance, and mapping entropy. We address the links existing among them, taking the moves from the established relation between resolution and relevance and further developing novel connections between resolution and mapping entropy; by these means we can identify, in a quantitative manner, the number and selection of degrees of freedom of the system that preserve the largest information content about the generative process that underlies an empirical dataset. The method, which is implemented in a freely available software, is fully general, as it is shown through the application to three very diverse systems, namely a toy model of independent binary spins, a coarse-grained representation of the financial stock market, and a fully atomistic simulation of a protein.
Chip-Chat: Challenges and Opportunities in Conversational Hardware Design
Creators: name: Blocklove, Jason
name: Garg, Siddharth
name: Karri, Ramesh
name: Pearce, Hammond
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Hardware Architecture (cs.AR)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Modern hardware design starts with specifications provided in natural language. These are then translated by hardware engineers into appropriate Hardware Description Languages (HDLs) such as Verilog before synthesizing circuit elements. Automating this translation could reduce sources of human error from the engineering process. But, it is only recently that artificial intelligence (AI) has demonstrated capabilities for machine-based end-to-end design translations. Commercially-available instruction-tuned Large Language Models (LLMs) such as OpenAI's ChatGPT and Google's Bard claim to be able to produce code in a variety of programming languages; but studies examining them for hardware are still lacking. In this work, we thus explore the challenges faced and opportunities presented when leveraging these recent advances in LLMs for hardware design. Given that these `conversational' LLMs perform best when used interactively, we perform a case study where a hardware engineer co-architects a novel 8-bit accumulator-based microprocessor architecture with the LLM according to real-world hardware constraints. We then sent the processor to tapeout in a Skywater 130nm shuttle, meaning that this `Chip-Chat' resulted in what we believe to be the world's first wholly-AI-written HDL for tapeout.
description: 6 pages, 8 figures. Accepted in 2023 ACM/IEEE 5th Workshop on Machine Learning for CAD (MLCAD)
Enhanced Decentralized Autonomous Aerial Robot Teams with Group Planning
Creators: name: Hou, Jialiang
name: Zhou, Xin
name: Gan, Zhongxue
name: Gao, Fei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Designing autonomous aerial robot team systems remains a grand challenge in robotics. Existing works in this field can be categorized as centralized and decentralized. Centralized methods suffer from scale dilemmas, while decentralized ones often lead to poor planning quality. In this paper, we propose an enhanced decentralized autonomous aerial robot team system with group planning. According to the spatial distribution of agents, the system dynamically divides the team into several groups and isolated agents. For conflicts within each group, we propose a novel coordination mechanism named group planning. The group planning consists of efficient multi-agent pathfinding (MAPF) and trajectory joint optimization, which can significantly improve planning quality and success rate. We demonstrate through simulations and real-world experiments that our method not only has applicability for a large-scale team but also has top-level planning quality
description: RAL with IROS2022
Dielectric properties of Poly(vinylidene fluoride)/ CaCu3Ti4O12 nanocrystal composite thick films
Creators: name: Thomas, P.
name: Satapathy, S.
name: Dwarakanath, K.
name: Varma, K. B. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The Poly(vinylidene fluoride)/CaCu3Ti4O12 (CCTO) nanocrystal composite films (85nm) with relatively high dielectric permittivity (90 at 100Hz) were prepared by the solution casting followed by spin coating technique. The structural, the microstructural and the dielectric properties of the composites were studied using X-ray diffraction, Scanning Electron Microscope, and Impedance analyzer respectively. The effective dielectric permittivity of the composite increased with increase in the volume fraction of CCTO at all the frequencies (100 Hz to 1MHz) under investigation. The room temperature dielectric permittivity which is around 90 at 100Hz, has increased to about 290 at 125oC (100Hz). These results may be exploited in the development of high energy density capacitors.
Gauge fields renormalization groups and thermofractals
Creators: name: Deppman, Airton
name: Megias, Eugenio
name: Menezes, Debora P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The perturbative approach to QCD has been shown to be limited, and the difficulties to obtain accurate calculations in the low-energy region seems to be insurmountable. A recent approach uses the fractal structures of Yang-Mills Field Theory to circumvent those difficulties, allowing for the determination of an analytic expression for the running coupling. The results obtained are in agreement with several experimental findings, and explain many of the observed phenomena at high-energy collisions. In this work, we address some of the conceptual aspects of the fractal approach, which are expressed in terms of the renormalization group equation and the self-energy corrections to the parton mass. We associate these well-known concepts with the origins of the fractal structure in the quantum field theory.
description: 8 pages, 1 figure, XLIV Brazilian Workshop on Nuclear Physics
Fluid description of the cooperative scattering of light by spherical atomic clouds
Creators: name: Piovella, N.
name: Bachelard, R.
name: Courteille, Ph. W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: When a cold atomic gas is illuminated by a quasi-resonant laser beam, light-induced dipole-dipole correlations make the scattering of light a cooperative process. Once a fluid description is adopted for the atoms, many scattering properties are captured by the definition of a complex refractive index. The solution of the scattering problem is here presented for spherical atomic clouds of arbitrary density profiles, such as parabolic densities characteristic of ultra-cold clouds. A new solution for clouds with infinite boundaries is derived, that is particularly useful for the Gaussian densities of thermal atomic clouds. The presence of Mie resonances, a signature of the cloud acting as a cavity for the light, is discussed. These resonances leave their fingerprint in various observables such as the scattered intensity or in the radiation pressure force, and can be observed by tuning the frequency of the incident laser field or the atom number.
description: 10 pages, 4 figures
Bottom-up holographic models for cosmology
Creators: name: Waddell, Chris
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this note, we investigate some simple generalizations of a bottom-up holographic approach to cosmology introduced in arXiv:1810.10601. Our models utilize the Karch/Randall/Takayanagi ansatz for the gravitational dual of a boundary conformal field theory, involving pure AdS gravity and an end-of-the-world brane. Following a suggestion made in arXiv:2102.05057, we consider models with an additional interface brane in the bulk. We find that solutions with a viable cosmological interpretation exist only if our model is further generalized, for example by including an Einstein-Hilbert term in the ETW brane action. The physical validity of such models is discussed from the perspective of the effective theory.
description: Minor typos corrected in Section 3, and Appendices A and C
Subwavelength population density gratings in resonant medium created by few-cycle pulses
Creators: name: Arkhipov, R.M.
name: Arkhipov, M.V.
name: Pakhomov, A.V.
name: Babushkin, I.
name: Demircan, A.
name: Morgner, Uwe
name: Rosanov, N.N.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2017
Subjects: subject: Laser beams
subject: Nanophotonics
subject: Nanostructures
subject: Optoelectronic devices
subject: Population distribution
subject: Population dynamics
subject: Population statistics
subject: Ultrashort pulses
subject: Beam deflectors
subject: Few-cycle pulse
subject: Light-matter interactions
subject: Population densities
subject: Resonant medium
subject: Sub-wavelength
subject: Ultrafast control
subject: Ultrafast optics
subject: Photonics
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We consider theoretically recently proposed a new possibility of creation, erasing and ultrafast control of population density grating. Such grating can be created in resonant medium when ultrashort pulses with duration smaller than relaxation times in the resonant medium (coherent light matter interactions) propagate without overlapping in this medium. Possible applications in the ultrafast optics such as optical switcher and laser beam deflector are discussed.
Rosa omissa Desegl.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: R. omissa Desegl. (R. tomentosa Sm. ssp. omissaRouy) Cat. 101. Var.typicaR.Kellert,resinosoides(Crepin) R.Keller- Oberwallis (nachCottet). Var. vallesiaca Christ - 2: Bei Lens (Besse).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
A Burton-Miller-type boundary element method based on a hybrid integral representation and its application to cavity scattering
Creators: name: Toshimitsu, Riku
name: Isakari, Hiroshi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: This study builds on a recent paper by Lai et al [Appl. Comput. Harmon. Anal., 2018] in which a novel boundary integral formulation is presented for scalar wave scattering analysis in two-dimensional layered and half-spaces. The seminal paper proposes a hybrid integral representation that combines the Sommerfeld integral and layer potential to efficiently deal with the boundaries of infinite length. In this work, we modify the integral formulation to eliminate the fictitious eigenvalues by employing Burton-Miller's approach. We also discuss reasonable parameter settings for the hybrid integral equation to ensure efficient and accurate numerical solutions. Furthermore, we extend the modified formulation for the scattering from a cavity in a half-space whose boundary is locally perturbed. To address the cavity scattering, we introduce a virtual boundary enclosing the cavity and couple the integral equation on it with the hybrid equation. The effectiveness of the proposed method is demonstrated through numerical examples.
Rey, Rafael Julián, El obispo diocesano en la génesis de la «Lumen Gentium». Ed. EUNSA. 1 vol. de 240 ps. 145x210. Pamplona. 1977
Creators: name: Marques, José A.
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
Additive noise quenches delay-induced oscillations
Creators: name: Lefebvre, Jérémie
name: Hutt, Axel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Noise has significant impact on nonlinear phenomena. Here we demonstrate that, in opposition to previous assumptions, additive noise interfere with the linear stability of scalar nonlinear systems when these are subject to time delay. We show this by performing a recently designed time-dependent delayed center manifold (DCM) reduction around an Hopf bifurcation in a model of nonlinear negative feedback. Using this, we show that noise intensity must be considered as a bifurcation parameter and thus shifts the threshold at which emerge delay-induced rhythmic solutions.
description: pre-print submitted version
The noncommutative ward metric
Creators: name: Lechtenfeld, Olaf
name: Maceda, Marco
Publisher: name: Kyiv : Institute of Mathematics of National Academy of Sciences of Ukraine, Department of Applied Research
Year: 2010
Subjects: subject: CP1 sigma model
subject: Noncommutative geometry
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: We analyze the moduli-space metric in the static non-Abelian charge-two sector of the Moyal-deformed CP1 sigma model in 1 + 2 dimensions. After carefully reviewing the commutative results of Ward and Ruback, the noncommutative Kähler potential is expanded in powers of dimensionless moduli. In two special cases we sum the perturbative series to analytic expressions. For any nonzero value of the noncommutativity parameter, the logarithmic singularity of the commutative metric is expelled from the origin of the moduli space and possibly altogether.
Search for noncommutative interactions in $γγ\rightarrowγγ$ process at the LHC
Creators: name: İnan, S. C.
name: Kisselev, A. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The noncommutative QED (NCQED) has a non-Abelian nature due to the presence of 3- and 4-photon vertices in the lagrangian. Thus, NCQED predicts a new physics contribution to the $γγ\rightarrowγγ$ scattering already at the tree level. We have examined NCQED by studying the light-by-light process at the 14 TeV LHC with intact protons. Our results show that the NC scale up to $Λ_{\mathrm{NC}} = 1.65(1.35)$ TeV can be probed in the $pp\rightarrow p(γγ)p \rightarrow p'(γγ)p'$ collision for the time-space (space-space) NC parameters. These bounds are stronger than the limits that can be obtained in the light-by-light scattering at high energy linear colliders.
description: 26 pages, 5 figures. Two comments and several references are added
TADA: Task-Agnostic Dialect Adapters for English
Creators: name: Held, Will
name: Ziems, Caleb
name: Yang, Diyi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Large Language Models, the dominant starting point for Natural Language Processing (NLP) applications, fail at a higher rate for speakers of English dialects other than Standard American English (SAE). Prior work addresses this using task-specific data or synthetic data augmentation, both of which require intervention for each dialect and task pair. This poses a scalability issue that prevents the broad adoption of robust dialectal English NLP. We introduce a simple yet effective method for task-agnostic dialect adaptation by aligning non-SAE dialects using adapters and composing them with task-specific adapters from SAE. Task-Agnostic Dialect Adapters (TADA) improve dialectal robustness on 4 dialectal variants of the GLUE benchmark without task-specific supervision.
description: 5 Pages; ACL Findings Paper 2023
Structural ordering driven anisotropic magnetoresistance, anomalous Hall resistance and its topological overtones in full-Heusler Co2MnSi thin films
Creators: name: Pandey, Himanshu
name: Budhani, R. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the evolution of crystallographic structure, magnetic ordering and electronic transport in thin films of full-Heusler alloy Co$_2$MnSi deposited on (001) MgO with annealing temperatures ($T_A$). By increasing the $T_A$ from 300$^\circ$C to 600$^\circ$C, the film goes from a disordered nanocrystalline phase to $B2$ ordered and finally to the $L2_1$ ordered alloy. The saturation magnetic moment improves with structural ordering and approaches the Slater-Pauling value of $\approx 5.0 μ_B$ per formula unit for $T_A$ = 600$^\circ$C. At this stage the films are soft magnets with coercive and saturation fields as low as $\approx$ 7 mT and 350 mT, respectively. Remarkable effects of improved structural order are also seen in longitudinal resistivity ($ρ_{xx}$) and residual resistivity ratio. A model based upon electronic transparency of grain boundaries illucidates the transition from a state of negative $dρ/dT$ to positive $dρ/dT$ with improved structural order. The Hall resistivity ($ρ_{xy}$) derives contribution from the normal scattering of charge carriers in external magnetic field, the anomalous effect originating from built-in magnetization and a small but distinct topological Hall effect in the disordered phase. The carrier concentration ($n$) and mobility ($μ$) have been extracted from the high field $ρ_{xy}$ data. The highly ordered films are characterized by $n$ and $μ$ of 1.19$\times$ 10$^{29}$ m$^{-3}$ and 0.4 cm$^2V^{-1}s^{-1}$ at room temperature. The dependence of $ρ_{xy}$ on $ρ_{xx}$ indicates the dominance of skew scattering in our films, which shows a monotonic drop on raising the $T_A$. The topological Hall effect is analyzed for the films annealed at 300$^\circ$C. ......
description: 10 pages, 9 figures, 1 table
Hermoso de Mendoza, Julio Euguí, La participación de la comunidad cristiana en la elección de los Obispos. Ed. EUNSA. 1 vol. de 236 ps. 145x210. Pamplona. 1977
Creators: name: Marques, José A.
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
Direct Statistical Simulation of the Busse Annulus
Creators: name: Oishi, Jeffrey S.
name: Burns, Keaton J.
name: Marston, J. B.
name: Tobias, S. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We consider direct statistical simulation (DSS) of a paradigm system of convection interacting with mean flows. In the Busse Annulus model zonal jets are generated through the interaction of convectively driven turbulence and rotation; non-trivial dynamics including the emergence of multiple jets and bursting `predator-prey' type dynamics can be found. We formulate the DSS by expanding around the mean flow in terms of equal-time cumulants and arrive at a closed set of equations of motion for the cumulants. Here, we present results using an expansion terminated at the second cumulant (CE2); it is fundamentally a quasi-linear theory. We focus on particular cases including bursting and bistable multiple jets and demonstrate that CE2 can reproduce the results of direct numerical simulation if particular attention is given to symmetry considerations.
description: 11 pages, 6 figures
title: Konstantin Koenen, Gefässkunde der vorrömischen, römischen und fränkischen Zeit in den Rheinlanden
Creators: name: S., [?]
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Konstantin Koenen, Gefässkunde der vorrömischen, römischen und fränkischen Zeit in den Rheinlanden. Mit 590 Abbildungen. Bonn, P. Hanstein 1895. 154 S. 8°.
Additional file 1 of Changes in liver stiffness values assessed using transient elastography in chronic hepatitis B patients treated with tenofovir disoproxil fumarate: a prospective observational study
Creators: name: Cho, Heejin
name: Lee, Yun Bin
name: Ha, Yeonjung
name: Chon, Young Eun
name: Kim, Mi Na
name: Lee, Joo Ho
name: Park, Hana
name: Rim, Kyu Sung
name: Hwang, Seong Gyu
Publisher: name: figshare
Year: 2023
Subjects: subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Hematology
subject: 110309 Infectious Diseases
subject: 60506 Virology

description: Supplementary Material 1
title: C. Mehlis, Studien zur ältesten Geschichte der Rheinlande
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: C. Mehlis, Studien zur ältesten Geschichte der Rheinlande. Elfte Abteilung. Der Drachenfels in Dürkheim a. d. H., I. Abth., mit einem topographischen Plan des Drachenfels. Neustadt a. d. H. 1894. 8. 32 S.
Villar, Andrés, La prueba documental pública en las causas matrimoniales. Ed. EUNSA. 1 vol. de 252 ps. 145x210. Pamplona. 1977
Creators: name: Marques, José A.
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
Hermite spectral method for multi-species Boltzmann equation
Creators: name: Li, Ruo
name: Lu, Yixiao
name: Wang, Yanli
name: Xu, Haoxuan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We introduce a numerical scheme for the full multi-species Boltzmann equation based on Hermite spectral method. With the proper choice of expansion centers for different species, a practical algorithm is derived to evaluate the complicated multi-species binary collision operator. New collision models are built by combining the quadratic collision model and the simple BGK collision model under the framework of the Hermite spectral method, which enables us to balance the computational cost and accuracy. Several numerical experiments are implemented to validate the dramatic efficiency of this new Hermite spectral method. Moreover, we can handle the problems with as many as 100 species, which is far beyond the capability of the state-of-art algorithms.
Critical Casimir torques and forces acting on needles in two spatial dimensions
Creators: name: Vasilyev, O. A.
name: Eisenriegler, E.
name: Dietrich, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate the universal orientation-dependent interactions between non-spherical colloidal particles immersed in a critical solvent by studying the instructive paradigm of a needle embedded in bounded two-dimensional Ising models at bulk criticality. For a needle in an Ising strip the interaction on mesoscopic scales depends on the width of the strip and the length, position, and orientation of the needle. By lattice Monte Carlo simulations we evaluate the free energy difference between needle configurations being parallel and perpendicular to the strip. We concentrate on small but nonetheless mesoscopic needle lengths for which analytic predictions are available for comparison. All combinations of boundary conditions for the needles and boundaries are considered which belong to either the "normal" or the "ordinary" surface universality class, i.e., which induce local order or disorder, respectively. We also derive exact results for needles of arbitrary mesoscopic length, in particular for needles embedded in a half plane and oriented perpendicular to the corresponding boundary as well as for needles embedded at the center line of a symmetric strip with parallel orientation.
description: 33 pages, 15 figures
Robot Learning of Mobile Manipulation with Reachability Behavior Priors
Creators: name: Jauhri, Snehal
name: Peters, Jan
name: Chalvatzaki, Georgia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Mobile Manipulation (MM) systems are ideal candidates for taking up the role of a personal assistant in unstructured real-world environments. Among other challenges, MM requires effective coordination of the robot's embodiments for executing tasks that require both mobility and manipulation. Reinforcement Learning (RL) holds the promise of endowing robots with adaptive behaviors, but most methods require prohibitively large amounts of data for learning a useful control policy. In this work, we study the integration of robotic reachability priors in actor-critic RL methods for accelerating the learning of MM for reaching and fetching tasks. Namely, we consider the problem of optimal base placement and the subsequent decision of whether to activate the arm for reaching a 6D target. For this, we devise a novel Hybrid RL method that handles discrete and continuous actions jointly, resorting to the Gumbel-Softmax reparameterization. Next, we train a reachability prior using data from the operational robot workspace, inspired by classical methods. Subsequently, we derive Boosted Hybrid RL (BHyRL), a novel algorithm for learning Q-functions by modeling them as a sum of residual approximators. Every time a new task needs to be learned, we can transfer our learned residuals and learn the component of the Q-function that is task-specific, hence, maintaining the task structure from prior behaviors. Moreover, we find that regularizing the target policy with a prior policy yields more expressive behaviors. We evaluate our method in simulation in reaching and fetching tasks of increasing difficulty, and we show the superior performance of BHyRL against baseline methods. Finally, we zero-transfer our learned 6D fetching policy with BHyRL to our MM robot TIAGo++. For more details and code release, please refer to our project site: irosalab.com/rlmmbp
description: Accepted: RA-L & IROS 2022
Adaption und Automatisierung eines In-vitro-Selektionsverfahrens
Creators: name: Witt, Martin Bernhard
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: Aptamer
subject: SELEX
subject: Real Time PCR
subject: EmulsionsPCR
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: Molekulare Erkennung wird in vielen Bereichen der Analytik und Biotechnologie genutzt. Meist werden dabei Antikörper eingesetzt. Aber auch artifizielle Affinitätsliganden wie Aptamere drängen immer stärker in den von Antikörpern dominierten Markt. Aptamere werden im Labor aus einer großen Startbibliothek aus unterschiedlichen, einzelsträngigen RNA- oder DNA-Sequenzen isoliert, dieser Selektionsprozess wird SELEX genannt (kurz für Systematic Evolution of Ligands by Exponential enrichment). In dieser Arbeit soll die Selektion von Aptameren untersucht werden. Dazu wurde eine "minimale" SELEX entworfen, die dabei den kompletten Kernprozess der Selektion abbildet. So läuft die minimale SELEX in Selektionsrunden aus Abtrennung der ungebundenen Aptamerkandidaten nach Inkubation mit dem Zielmolekül, Amplifikation der verbliebenen Aptamerkandidaten und Produktion neuer einzelsträngiger Aptamerkandidaten. Über mehrere Selektionsrunden werden dabei nieder-affine Aptamerkandidaten aufgrund des angelegten Selektionsdrucks aus der Selektion verdrängt. Um den Prozess beurteilen, kontrollieren sowie einen definierten Selektionsdruck einstellen zu können, wurde eine Analytik auf Basis der Real Time PCR entwickelt. Durch die engmaschige Prozessüberwachung und resultierende Steuerungsmöglichkeiten wird eine Verbesserung der Erfolgsaussichten der Selektion angestrebt. Anschließend wurde die Funktionalität dieser entwickelten minimalen SELEX und der Analytik in einer de novo Selektion gegen His-Tag-Proteine demonstriert. Durch Einsatz dieser Prozessüberwachung konnte gezeigt werden, dass die minimale SELEX beim Einsatz gegen das Wilson-Protein (ATP7B) durch die Bildung von Nebenprodukten während der Amplifikation der Aptamerkandidaten behindert wird. Diese Nebenprodukte entstehen durch partielle Hybridisierung zwischen den Aptamerkandidaten. Durch die Integration der EmulsionsPCR in die SELEX konnte die Entstehung von Nebenprodukten jedoch effektiv unterdrückt werden.
Characterization of a $^{220}$Rn source for low-energy electronic recoil calibration of the XENONnT detector
Creators: name: Jörg, Florian
name: Li, Shengchao
name: Schreiner, Jochen
name: Simgen, Hardy
name: Lang, Rafael F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Low-background liquid xenon detectors are utilized in the investigation of rare events, including dark matter and neutrinoless double beta decay. For their calibration, gaseous $^{220}$Rn can be used. After being introduced into the xenon, its progeny isotope $^{212}$Pb induces homogeneously distributed, low-energy ($<30$ keV) electronic recoil interactions. We report on the characterization of such a source for use in the XENONnT experiment. It consists of four commercially available $^{228}$Th sources with an activity of 55 kBq. These sources provide a high $^{220}$Rn emanation rate of about 8 kBq. We find no indication for the release of the long-lived $^{228}$Th above 1.7 mBq. Though an unexpected $^{222}$Rn emanation rate of about 3.6 mBq is observed, this source is still in line with the requirements for the XENONnT experiment.
description: 9 pages, 5 figures
MANAGEMENT OF RENEWABLE ENERGY SOURCES
Creators: name: Ismayilova Aygun
Publisher: name: Вестник науки
Year: 2023
Subjects: HYBRID ENERGY COMPLEX
WIND DIESEL POWER PLANT
RENEWABLE ENERGY SOURCES
AUTOMATIC CONTROL SYSTEMS
AUTONOMOUS ENERGY SUPPLY

description: The main problem of energy supply to consumers in isolated energy systems is high logistics costs (transportation over long distances, high fuel prices) and the high price of electricity produced by diesel power plants. The article describes the potential of using hybrid power supply systems based on renewable energy sources to save expensive fuel. The analysis of automatic control systems that ensure the increase of the efficiency of the elements of the energy complex under their control is given.
LOSS CONTROL SYSTEM IN THE ELECTRIC NETWORK
Creators: name: Mustafayeva Fidan
Publisher: name: Вестник науки
Year: 2023
Subjects: ELECTRIC ENERGY
CONTROL
ENERGY LOSSES
MODERN METHODS
SMART METER

description: After the production of electricity, losses during its distribution are considered as an important issue. Currently, loss control, electricity metering and loss prevention are one of the urgent issues. Electricity measurement, detection and elimination of losses affect energy-saving technologies. Certain methods and smart technologies have been proposed to prevent losses during the distribution of electricity.
Vários, Divorcio. Ed. EUNSA (Coleccion Cultural de Bolsillo «Temas NT, n.° 32). 1 vol. de 216 ps. 110x180. Pamplona. 1977
Creators: name: Sarmiento, Augusto
name: Marques, José A.
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
METHODS FOR IMPROVING THE ENERGY EFFICIENCY OF WIND TURBINES AT LOW WIND SPEEDS
Creators: name: Mammadov, N.S.
Publisher: name: Вестник науки
Year: 2023
Subjects: WIND TURBINES
WIND WHEEL
WIND SPEED
GENERATION
ENERGY EFFICIENCY
POWER
RELIABILITY

description: Wind electric installations are one of the most promising sources of renewable energy. Like other installations, this installation also has both advantages and disadvantages. One of the main problems of these installations is the low efficiency at low wind speeds. This article discusses methods to improve the energy efficiency of wind turbines at low wind speeds. This article also discusses the main advantages and disadvantages of these methods. The main factors that are necessary when choosing a more optimal method for improving the energy efficiency of wind turbines at low wind speeds are listed.
title: Die Mosella des Decimus Magnus Ausonius
Creators: name: Siebourg, Max
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Die Mosella des Decimus Magnus Ausonius. Herausgegeben und erklärt von Dr. Carl Hosius, Privatdozent. Anhang: Die Moselgedichte des Venantius Fortunatus. Marburg, N. G. Elwert'sche Verlagsbuchhandlung´1894. Mk. 1.40.
The H.E.S.S. transients follow-up system
Creators: name: Hoischen, C.
name: Füßling, M.
name: Ohm, S.
name: Balzer, A.
name: Ashkar, H.
name: Bernlöhr, K.
name: Hofverberg, P.
name: Holch, T. L.
name: Murach, T.
name: Prokoph, H.
name: Schüssler, F.
name: Zhu, S. J.
name: Berge, D.
name: Egberts, K.
name: Stegmann, C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Observations of astrophysical transients have brought many novel discoveries and provided new insights into physical processes at work under extreme conditions in the Universe. Multi-wavelength and multi-messenger observations of variable objects require dedicated procedures and follow-up systems capable of digesting and reacting to external alerts to execute coordinated follow-up campaigns. The main functions of such follow-up systems are the processing, filtering, and ranking of the incoming alerts, the fully automated rapid execution of the observations according to an observation strategy tailored to the instrument, and real-time data analysis with feedback to the operators and other instruments. H.E.S.S. has been searching for transient phenomena since its inauguration in 2003. In this paper, we describe the transients follow-up system of H.E.S.S. which became operational in 2016. The system allows H.E.S.S. to conduct a more versatile, optimised, and largely autonomous transient follow-up program, combining all major functionalities in one systematic approach. We describe the design, central functionalities, and interfaces of the follow-up system in general and its three main components in detail: the Target of Opportunity (ToO) alert system, the data acquisition and central control system, and the real-time analysis. We highlight architectural decisions and features that enable fully automatic ToO follow-up and indicate key performance metrics of the sub-systems. We discuss the system's capabilities and highlight the need for a fine-tuned interplay of the different sub-systems in order to react quickly and reliably. Lessons learned from the development, integration, and operation of the follow-up system are reviewed in light of new and large science infrastructures and associated challenges in this exciting new era of inter-operable astronomy.
description: 18 pages, 10 figures, accepted for publication in A&A
Skyrme model from 6d N=(2,0) theory
Creators: name: Ivanova, Tatiana A.
name: Lechtenfeld, Olaf
name: Popov, Alexander D.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: Yang-Mills theory
subject: Supersymmetries
subject: Skyrme model
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We consider 5d Yang–Mills theory with a compact ADE-type gauge group G on R3,1×I, where I is an interval. The maximally supersymmetric extension of this model appears after compactification on S1 of 6d N=(2,0) superconformal field theory on R3,1×S2 2, where S2 2≅I×S1 is a two-sphere with two punctures. In the low-energy limit, when the length of I becomes small, the 5d Yang–Mills theory reduces to a nonlinear sigma model on R3,1 with the Lie group G as its target space. It contains an infinite tower of interacting fields whose leading term in the infrared is the four-derivative Skyrme term. A maximally supersymmetric generalization leading to a hyper-Kähler sigma-model target space is briefly discussed.
Knee structure in the laser intensity dependence of high-order harmonic generations for graphene
Creators: name: Dong, Fulong
name: Liu, Jie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate the high-order harmonic generations (HHGs) of graphene irradiated by linearly polarized lasers with intensities in a wide range from $10^{8}$ W/cm$^2$ to $10^{13}$ W/cm$^2$. We find a striking knee structure in the laser intensity dependence of HHGs, which consists of a linear growth regime, followed by a plateau of the saturated HHGs, and then a transition to a nonlinear growth. The knee structure is rather universal for the varied harmonic orders and has been certificated by the calculations of two-band density-matrix equations as well as the \textit{ab initio} calculations of time-dependent density functional theory. Based on the two-band model, we reveal the underlying mechanisms: The behavior of linear growth can be depicted analytically by the perturbative theory of optical conductivity; While, the plateau of saturated HHGs and the transition to a nonlinear growth are caused by the quantum destructive interference and constructive interference of harmonics generated by the electrons corresponding to the lattice momentums around Dirac points and M points in Brillouin zone, respectively. In particular, we find that tuning Fermi energy can effectively alter the knee structure while the profile of the knee structure is not sensitive to the temperature. Our calculations of the third-order harmonic vs. tuning Fermi energy are compared with recent experiment showing a good agreement. Our predicted knee structure and its associated properties are observable with the current experimental techniques.
Three-dimensional Dirac fermions in quasicrystals as seen via optical conductivity
Creators: name: Timusk, T.
name: Carbotte, J. P.
name: Homes, C. C.
name: Basov, D. N.
name: Sharapov, S. G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The optical conductivity of quasicrystals is characterized by two features not seen in ordinary metallic systems. There is an absence of the Drude peak and the interband conductivity rises linearly from a very low value up to normal metallic levels over a wide range of frequencies. The absence of a Drude peak has been attributed to a pseudogap at the Fermi surface but a detailed explanation of the linear behavior has not been found. Here we show that the linear conductivity, which seems to be universal in all Al based icosahedral quasicrystal families, as well as their periodic approximants, follows from a simple model that assumes that the entire Fermi surface is gapped except at a finite set of Dirac points. There is no evidence of a semiconducting gap in any of the materials suggesting that the Dirac spectrum is massless, protected by topology leading to a Weyl semimetal. This model gives rise to a linear conductivity with only one parameter, the Fermi velocity. This picture suggests that decagonal quasicrystals should, like graphene, have a frequency independent conductivity, without a Drude peak. This is in accord with the experimental data as well.
description: 6 pages, 4 figures
title: Bibliographie [der Geschichtswissenschaft] bearbeitet von Oscar Masslow und Gustav Sommerfeldt
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Bibliographie [der Geschichtswissenschaft] bearbeitet von Oscar Masslow und Gustav Sommerfeldt (Separat-Abdruck aus der Deutschen Zeitschrift für Geschichtswissenschaft, Bd. XI, Heft 1 und Heft 2, Freiburg i. B. 1894).
García y García, Antonio. Estúdios sobre la canonistica portuguesa medieval. Ed. Fundación Universitária Espanola. Vol. de 296 ps. 140x195. Madrid. 1976
Creators: name: Correia, Francisco Carvalho
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
Skyrme–Faddeev model from 5d super-Yang–Mills
Creators: name: Lechtenfeld, Olaf
name: Popov, Alexander D.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: 5d Yang–Mills–Higgs theory
subject: nonlinear sigma model
subject: 4d sigma model
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We consider 5d Yang–Mills–Higgs theory with a compact ADE-type gauge group G and one adjoint scalar field on R3,1×R+, where R+=[0,∞) is the half-line. The maximally supersymmetric extension of this model, with five adjoint scalars, appears after a reduction of 6d N=(2,0) superconformal field theory on R3,1×R+×S1 along the circle S1. We show that in the low-energy limit, when momenta along R3,1 are much smaller than along R+, the 5d Yang–Mills–Higgs theory reduces to a nonlinear sigma model on R3,1 with a coset G/H as its target space. Here H is a closed subgroup of G determined by the Higgs-field asymptotics at infinity. The 4d sigma model describes an infinite tower of interacting fields, and in the infrared it is dominated by the standard two-derivative kinetic term and the four-derivative Skyrme–Faddeev term.
Vários, Etica profesional de la Enfermeira. Ed. EUNSA (Colección Ciências Médicas). 1 vol. de 300 ps. 180x220. Pamplona. 1977
Creators: name: Marques, José A.
Publisher: name: Theologica
Year: 1977

description: Theologica, v. 12 n. 1-4 (1977)
Resonant dynamics of extreme mass-ratio inspirals in a perturbed Kerr spacetime
Creators: name: Pan, Zhen
name: Yang, Huan
name: Bernard, Laura
name: Bonga, Béatrice
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Extreme mass-ratio inspirals (EMRI) are one of the most sensitive probes of black hole spacetimes with gravitational wave measurements. In this work, we systematically analyze the dynamics of an EMRI system near orbital resonances, assuming the background spacetime is weakly perturbed from Kerr. Using the action-angle formalism, we have derived an effective resonant Hamiltonian that describes the dynamics of the resonant degree of freedom, for the case that the EMRI motion across the resonance regime. This effective resonant Hamiltonian can also be used to derive the condition that the trajectory enters/exits a resonant island and the permanent change of action variables across the resonance with the gravitational wave radiation turned on. The orbital chaos, on the other hand, generally leads to transitions between different branches of rotational orbits with finite changes of the action variables. These findings are demonstrated with numerical orbital evolutions that are mapped into representations using action-angle variables. This study is one part of the program of understanding EMRI dynamics in a generic perturbed Kerr spacetime, which paves the way of using EMRIs to precisely measure the black hole spacetime.
description: 22 pages, 17 figures