cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hadron-hadron potentials coupled to quark degrees of freedom for exotic hadrons
Creators: name: Terashima, Ibuki
name: Hyodo, Tetsuo
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the properties of the hadron-hadron potentials and quark-antiquark potentials from the viewpoint of the channel coupling. We demonstrate that, for finite quark masses, the coupling to the two-hadron continuum induces the imaginary part of the quark-antiquark potential, in contrast to the string-breaking phenomena in the static limit. It is also shown that the elimination of the different degrees of freedom induces the nonlocality and energy dependence of the effective potentials. For the obtained nonlocal potentials, we apply two methods of the local approximation proposed previously, the formal derivative expansion and the derivative expansion in the HAL QCD method, by carefully examining the energy dependence of the potential. As an application, we construct a coupled-channel model of $c\bar{c}$ and $D^{0}\bar{D}^{*0}$ to describe $X(3872)$, and discuss the property of the effective $D^{0}\bar{D}^{*0}$ potentials. We confirm that the local approximation by the HAL QCD method works better than the formal derivative expansion also for the energy-dependent potential. At the same time, we show that, in the HAL QCD method, the resulting phase shift is sensitive to the choice of the wavefunction to construct the local potential when the system has a shallow bound state such as $X(3872)$.
description: 12 pages, 9 figures
Zimmermann, Ruben / Kern, Gabi (Hrsg.), Hermeneutik der Gleichnisse Jesu
Creators: name: Stenschke, Christoph W.
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1823351549
description: Jahrbuch für evangelikale Theologie, V. 23 (2009): Jahrbuch für evangelikale Theologie, Band 23
title: UK Energy System Model (ESME): Functional Definition
Creators: name: Ede, S.
Publisher: name: ETI
Year: 2009
Subjects: subject: Cross Cutting Programme (Strategy)
subject: OTHER CROSS-CUTTING TECHNOLOGIES or RESEARCH (Energy Models)

description: This report was produced at the outset of the ESME project. Written at the time of the build of the first prototype energy model, it gives a functional definition for a complete model to meet the key requirements identified by ETI.The functional definition addresses model functionality, architecture, data requirements and the implementation path. Many aspects of this functional definition were later implemented in ESME via development of the original prototype model, however not all, so this report is not a factual record of the functionality of later versions of ESME. See the modelling paper dated April 2014 instead for a record of actual model functionality

This publication has been produced as part of the work on the ETI’s internationally peer reviewed energy system modelling environment (ESME) - a national energy system design and planning capability that helps toidentify key areas for ETI investments. ESME is also used by UK Government to underpin and inform energy policy.
Hofius, Otfried, Exegetische Studien
Creators: name: Schnabel, Eckhard J.
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1823351018
description: Jahrbuch für evangelikale Theologie, V. 23 (2009): Jahrbuch für evangelikale Theologie, Band 23
Quantum algorithms and the finite element method
Creators: name: Montanaro, Ashley
name: Pallister, Sam
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The finite element method is used to approximately solve boundary value problems for differential equations. The method discretises the parameter space and finds an approximate solution by solving a large system of linear equations. Here we investigate the extent to which the finite element method can be accelerated using an efficient quantum algorithm for solving linear equations. We consider the representative general question of approximately computing a linear functional of the solution to a boundary value problem, and compare the quantum algorithm's theoretical performance with that of a standard classical algorithm -- the conjugate gradient method. Prior work had claimed that the quantum algorithm could be exponentially faster, but did not determine the overall classical and quantum runtimes required to achieve a predetermined solution accuracy. Taking this into account, we find that the quantum algorithm can achieve a polynomial speedup, the extent of which grows with the dimension of the partial differential equation. In addition, we give evidence that no improvement of the quantum algorithm could lead to a super-polynomial speedup when the dimension is fixed and the solution satisfies certain smoothness properties.
description: 16 pages, 2 figures
Renormalisation of the low-energy constants of chiral perturbation theory from loops with dynamical vector mesons
Creators: name: Terschlüsen, Carla
name: Leupold, Stefan
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Starting from a relativistic Lagrangian for pseudoscalar Goldstone bosons and vector mesons in the antisymmetric tensor representation, a one-loop calculation is performed to pin down the divergent structures that appear for the effective low-energy action at chiral orders Q^2 and Q^4. The corresponding renormalisation-scale dependences of all low-energy constants up to chiral order Q^4 are determined. Calculations are carried out for both the pseudoscalar octet and the pseudoscalar nonet, the latter in the framework of chiral perturbation theory in the limit of a large number of colours.
description: revised version, accepted for publication
Capacity Enhancement for Reconfigurable Intelligent Surface-Aided Wireless Network: from Regular Array to Irregular Array
Creators: name: Su, Ruochen
name: Dai, Linglong
name: Tan, Jingbo
name: Hao, Mo
name: MacKenzie, Richard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Reconfigurable intelligent surface (RIS) is promising for future 6G wireless communications. However, the increased number of RIS elements results in the high overhead for channel acquisition and the non-negligible power consumption. Therefore, how to improve the system capacity with limited RIS elements is essential. Unlike the classical regular RIS whose elements are arranged on a regular grid, in this paper, we propose an irregular RIS structure to improve the system capacity. The key idea is to irregularly configure a given number of RIS elements on an enlarged surface, which provides extra spatial degrees of freedom compared with the regular RIS. In this way, the received signal power can be enhanced, and thus the system capacity can be improved. Then, we formulate a joint topology and precoding optimization problem to maximize the capacity for irregular RIS-aided communication systems. Accordingly, a joint optimization algorithm with low complexity is proposed to alternately optimize the RIS topology and the precoding design. Particularly, a tabu search-based method is used to design the irregular RIS topology, and a neighbor extraction-based cross-entropy method is introduced to optimize the precoding design. Simulation results demonstrate that, subject to the constraint of limited RIS elements, the proposed irregular RIS can significantly enhance the system capacity.
description: Accepted by IEEE Transactions on Vehicular Technology. Simulation codes are provided at: http://oa.ee.tsinghua.edu.cn/dailinglong/publications/publications.html
Stereo-Electronic Factors Influencing the Stability of Hydroperoxyalkyl Radicals: Transferability of Chemical Trends across Hydrocarbons and ab initio Methods
Creators: name: Kandpal, Saurabh Chandra
name: Otukile, Kgalaletso P.
name: Jindal, Shweta
name: Senthil, Salini
name: Matthews, Cameron
name: Chakraborty, Sabyasachi
name: Moskaleva, Lyudmila V.
name: Ramakrishnan, Raghunathan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The hydroperoxyalkyl radicals (.QOOH) are known to play a significant role in combustion and tropospheric processes, yet their direct spectroscopic detection remains challenging. In this study, we investigate molecular stereo-electronic effects influencing the kinetic and thermodynamic stability of a .QOOH along its formation path from the precursor, alkylperoxyl radical (ROO.), and the depletion path resulting in the formation of cyclic ether + .OH. We focus on reactive intermediates encountered in the oxidation of acyclic hydrocarbon radicals: ethyl, isopropyl, isobutyl, tert-butyl, neopentyl, and their alicyclic counterparts: cyclohexyl, cyclohexenyl, and cyclohexadienyl. We report reaction energies and barriers calculated with the highly accurate method Weizmann-1 (W1) for the channels: ROO. <=> .QOOH, ROO. <=> alkene + .OOH, .QOOH <=> alkene + .OOH, and .QOOH <=> cyclic ether + .OH. Using W1 results as a reference, we have systematically benchmarked the accuracy of popular density functional theory (DFT), composite thermochemistry methods, and an explicitly correlated coupled-cluster method. We ascertain inductive, resonance, and steric effects on the overall stability of .QOOH and computationally investigate the possibility of forming more stable species. With new reactions as test cases, we probe the capacity of various ab initio methods to yield quantitative insights on the elementary steps of combustion.
description: Final version, major revision. SI is enclosed
HighLight: Efficient and Flexible DNN Acceleration with Hierarchical Structured Sparsity
Creators: name: Wu, Yannan Nellie
name: Tsai, Po-An
name: Muralidharan, Saurav
name: Parashar, Angshuman
name: Sze, Vivienne
name: Emer, Joel S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Hardware Architecture (cs.AR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Due to complex interactions among various deep neural network (DNN) optimization techniques, modern DNNs can have weights and activations that are dense or sparse with diverse sparsity degrees. To offer a good trade-off between accuracy and hardware performance, an ideal DNN accelerator should have high flexibility to efficiently translate DNN sparsity into reductions in energy and/or latency without incurring significant complexity overhead. This paper introduces hierarchical structured sparsity (HSS), with the key insight that we can systematically represent diverse sparsity degrees by having them hierarchically composed from multiple simple sparsity patterns. As a result, HSS simplifies the underlying hardware since it only needs to support simple sparsity patterns; this significantly reduces the sparsity acceleration overhead, which improves efficiency. Motivated by such opportunities, we propose a simultaneously efficient and flexible accelerator, named HighLight, to accelerate DNNs that have diverse sparsity degrees (including dense). Due to the flexibility of HSS, different HSS patterns can be introduced to DNNs to meet different applications' accuracy requirements. Compared to existing works, HighLight achieves a geomean of up to 6.4x better energy-delay product (EDP) across workloads with diverse sparsity degrees, and always sits on the EDP-accuracy Pareto frontier for representative DNNs
description: Accepted to MICRO23
Naturally occurring fluorescence in transparent insect wings
Creators: name: Mouchet, Sébastien R.
name: Verstraete, Charlotte
name: Bokic, Bojana
name: Mara, Dimitrije
name: Dellieu, Louis
name: Orr, Albert G.
name: Deparis, Olivier
name: Van Deun, Rik
name: Verbiest, Thierry
name: Vukusic, Pete
name: Kolaric, Branko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In spite of the crucial role it is believed to play in nature, fluorescence in natural organisms remains under-investigated from optical, chemical and biological perspectives. One example is the transparent wings of insects from the order Hemiptera: fluorescence emission has so far not been reported in any of the 3,000 described species of the superfamily Cicadoidea. The phenomenon has however been investigated in several butterfly and moth species, in which the coloured wing scales are known to embed fluorophores such as papiliochrome II. Photonic structures present in these scales may mediate the associated light emission. Fluorescence has also been described in the vein joints and the membrane of the transparent wings of damselflies and dragonflies. This emission was attributed to the presence of autofluorescent proteins such as resilin that gives rise to low stiffness and high strain in the biological tissues, allowing passive wing deformations. In this article, we characterised the fluorescence emission from the transparent wings of the grey cicada \textit{Cicada orni} (Linnaeus, 1758) and the common cicada \textit{Lyristes (Tibicen) plebejus} (Scopoli, 1763), using linear and nonlinear optical methods. We compared their properties with the fluorescence emission from two other insects exhibiting transparent wings, namely, \textit{Hemaris fuciformis} (Linnaeus, 1758) commonly known as the broad-bordered bee hawk-moth and the Bornean damselfly \textit{Vestalis amabilis} Lieftinck, 1965. These fluorescent behaviours were optically characterised by one- and multi-photon microscopy and spectrometry, allowing us to infer the symmetry of the material as well as the biological role of the fluorophores in the visual perception of insects and to explain the high absorption by the material in the range 300-400~nm.
description: 16 pages, 6 figures, 1 table
Intelligent Agent-Based Stimulation for Testing Robotic Software in Human-Robot Interactions
Creators: name: Araiza-Illan, Dejanira
name: Pipe, Anthony G.
name: Eder, Kerstin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Robotics (cs.RO)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: The challenges of robotic software testing extend beyond conventional software testing. Valid, realistic and interesting tests need to be generated for multiple programs and hardware running concurrently, deployed into dynamic environments with people. We investigate the use of Belief-Desire-Intention (BDI) agents as models for test generation, in the domain of human-robot interaction (HRI) in simulations. These models provide rational agency, causality, and a reasoning mechanism for planning, which emulate both intelligent and adaptive robots, as well as smart testing environments directed by humans. We introduce reinforcement learning (RL) to automate the exploration of the BDI models using a reward function based on coverage feedback. Our approach is evaluated using a collaborative manufacture example, where the robotic software under test is stimulated indirectly via a simulated human co-worker. We conclude that BDI agents provide intuitive models for test generation in the HRI domain. Our results demonstrate that RL can fully automate BDI model exploration, leading to very effective coverage-directed test generation.
Free Riding in Networks
Creators: name: Kinateder, Markus
name: Merlino, Luca Paolo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Theoretical Economics (econ.TH)
subject: FOS: Economics and business

description: Players allocate their budget to links, a local public good and a private good. A player links to free ride on others' public good provision. We derive sufficient conditions for the existence of a Nash equilibrium. In equilibrium, large contributors link to each other, while others link to them. Poorer players can be larger contributors if linking costs are sufficiently high. In large societies, free riding reduces inequality only in networks in which it is initially low; otherwise, richer players benefit more, as they can afford more links. Finally, we study the policy implications, deriving income redistribution that increases welfare and personalized prices that implement the efficient solution.
Scalar Multiplet Recombination at Large N and Holography
Creators: name: Bashmakov, Vladimir
name: Bertolini, Matteo
name: Di Pietro, Lorenzo
name: Raj, Himanshu
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the coupling of a free scalar to a single-trace operator of a large N CFT in d dimensions. This is equivalent to a double-trace deformation coupling two primary operators of the CFT, in the limit when one of the two saturates the unitarity bound. At leading order, the RG-flow has a non-trivial fixed point where multiplets recombine. We show this phenomenon in field theory, and provide the holographic dual description. Free scalars correspond to singleton representations of the AdS algebra. The double-trace interaction is mapped to a boundary condition mixing the singleton with the bulk field dual to the single-trace operator. In the IR, the singleton and the bulk scalar merge, providing just one long representation of the AdS algebra.
description: 15 pages; v2: Typos corrected and a reference added. Version to appear on JHEP
Spectra of Reduced Fractals and Their Applications in Biology
Creators: name: Pham, Diana T.
name: Musielak, Zdzislaw E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: Fractals with different levels of self-similarity and magnification are defined as reduced fractals. It is shown that spectra of these reduced fractals can be constructed and used to describe levels of complexity of natural phenomena. Specific applications to biological systems, such as green algae, are performed, and it is suggested that the obtained spectra can be used to classify the considered algae by identifying spectra associated with them. The ranges of these spectra for green algae are determined and their extension to other biological as well as other natural systems is proposed.
On the Rectilinear Crossing Number of Complete Uniform Hypergraphs
Creators: name: Anshu, Anurag
name: Gangopadhyay, Rahul
name: Shannigrahi, Saswata
name: Vusirikala, Satyanarayana
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: In this paper, we consider a generalized version of the rectilinear crossing number problem of drawing complete graphs on a plane. The minimum number of crossing pairs of hyperedges in the $d$-dimensional rectilinear drawing of a $d$-uniform hypergraph is known as the $d$-dimensional rectilinear crossing number of the hypergraph. The currently best-known lower bound on the $d$-dimensional rectilinear crossing number of a complete $d$-uniform hypergraph with $n$ vertices in general position in $\mathbb{R}^d$ is $Ω(\frac{2^d}{\sqrt{d}} \log d) {n \choose 2d}$. In this paper, we improve this lower bound to $Ω(2^d) {n \choose 2d}$. We also consider the special case when all the vertices of a $d$-uniform hypergraph are placed on the $d$-dimensional moment curve. For such complete $d$-uniform hypergraphs with $n$ vertices, we show that the number of pairwise crossing hyperedges is $Θ(\frac{4^d}{\sqrt{d}}) {n \choose 2d}$.
title: An ETI Perspective - Targets, Technologies, Infrastructure and Investments: Preparing the UK for the Energy Transition
Creators: name: Coleman, J.
name: Haslett, A.
Publisher: name: ETI
Year: 2015
Subjects: subject: Cross Cutting Programme (Strategy)
subject: FOSSIL FUELS: OIL, GAS and COAL (CO2 Capture and Storage)
subject: RENEWABLE ENERGY SOURCES (Bio-Energy)
subject: OTHER CROSS-CUTTING TECHNOLOGIES or RESEARCH (Energy system analysis)

description: The UK was one of the first countries to take the climate challenge seriously and give the transition an institutional framework. This has allowed it to take an integrated approach to the journey to 2050. It starts with preparing for the mass scale deployment of key technologies by the mid 2020’s.

Key headlinesThe UK can implement an affordable (approximately 1% of GDP) 35-year transition to a low carbon energy system by developing, commercialising and integrating known – but currently underdeveloped solutionsThere is enormous potential and value in CCS and bioenergy in delivering alow carbon futureThe ability (or failure) to deploy these two technologies will have a huge impact on the cost of achieving the UK climate change targets and the national architecture of low carbon systems and future infrastructure requirementsTo avoidwasting investment, crucial decisions must be made about the design of the future UK energy system, driven by choices on infrastructureThe next decade is critical in preparing for transitionPreparation will require major investments in developing and proving key technology options by the mid 2020sPreparation creates options, demonstrates leadershipand provides scope for economic advantage in a global market placePlanned UK spend is probably sufficient, if it is targeted to develop genuine deployment readiness of the most strategically valuable options on the pathway to 2050Significant policy intervention will be required to support key technologies with characteristics that make a pure market approach difficult (e.g. CCS, bioenergy, nuclear, offshore wind, heat networks
Multicast and Unicast Superposition Transmission in MIMO OFDMA Systems with Statistical CSIT
Creators: name: Kim, Yong Jin Daniel
name: Vargas, David
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider a downlink multicast and unicast superposition transmission in multi-layer Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiple Access (OFDMA) systems when only the statistical channel state information is available at the transmitter (CSIT). Multiple users can be scheduled by using the time/frequency resources in OFDMA, while for each scheduled user MIMO spatial multiplexing is used to transmit multiple information layers, i.e., single user (SU)-MIMO. The users only need to feedback to the base-station the rank-indicator and the long-term average channel signal-to-noise ratio to indicate a suitable number of transmission layers, a suitable modulation and coding scheme and allow the base-station to perform user scheduling. This approach is especially relevant for the delivery of common (e.g., popular live event) and independent (e.g., user personalized) content to a high number of users in deployments in the lower frequency bands operating in Frequency-Division-Duplex (FDD) mode, e.g., sub-1 GHz. We show that the optimal resource allocation that maximizes the ergodic sum-rate involves greedy user selection per OFDM subchannel and superposition transmission of one multicast signal across all subchannels and single unicast signal per subchannel. Degree-of-freedom (DoF) analysis shows that while the lack of instantaneous CSI limits DoF of unicast messages to the minimum number of transmit antennas and receiver antennas, the multicast message obtains full DoF that increases linearly with the number of users. We present resource allocation algorithms consisting of user selection and power allocation between multicast and unicast signals in each OFDM subchannel. System level simulations in 5G rural macro-cell scenarios show overall network throughput gains in realistic network environments by superposition transmission of multicast and unicast signals.
description: 17 pages, 10 figures, 2 tables
Quantum mechanics of radiofrequency-driven coherent beam oscillations in storage rings
Creators: name: Slim, J.
name: Nikolaev, N. N.
name: Rathmann, F.
name: Wirzba, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Precision searches for the electric dipole moment of protons in storage ring experiments call for beam-position monitoring in the picometer range. We present the relevant fully quantum mechanical derivation of radiofrequency-driven collective oscillations of a beam in a storage ring.
description: 5 pages
Hengel, Martin, Studien zum Urchristentum
Creators: name: Schnabel, Eckhard J.
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 182335100X
description: Jahrbuch für evangelikale Theologie, V. 23 (2009): Jahrbuch für evangelikale Theologie, Band 23
Coupling of Coexisting Non-Collinear Spin States in the Fe Monolayer on Re(0001)
Creators: name: Palacio-Morales, Alexandra
name: Kubetzka, André
name: von Bergmann, Kirsten
name: Wiesendanger, Roland
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Spin-polarized scanning tunneling microscopy is used to investigate the magnetic state of the Fe monolayer on Re(0001). Two coexisting atomic-scale non-collinear spin textures are observed with a sharp transition between them on the order of one atomic lattice spacing. A strict position correlation between the two spin states is observed both in experiments and in Monte Carlo simulations, demonstrating their strong coupling behavior.
description: 5 pages, 3 figures
Reliability Assessment and Safety Arguments for Machine Learning Components in System Assurance
Creators: name: Dong, Yi
name: Huang, Wei
name: Bharti, Vibhav
name: Cox, Victoria
name: Banks, Alec
name: Wang, Sen
name: Zhao, Xingyu
name: Schewe, Sven
name: Huang, Xiaowei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The increasing use of Machine Learning (ML) components embedded in autonomous systems -- so-called Learning-Enabled Systems (LESs) -- has resulted in the pressing need to assure their functional safety. As for traditional functional safety, the emerging consensus within both, industry and academia, is to use assurance cases for this purpose. Typically assurance cases support claims of reliability in support of safety, and can be viewed as a structured way of organising arguments and evidence generated from safety analysis and reliability modelling activities. While such assurance activities are traditionally guided by consensus-based standards developed from vast engineering experience, LESs pose new challenges in safety-critical application due to the characteristics and design of ML models. In this article, we first present an overall assurance framework for LESs with an emphasis on quantitative aspects, e.g., breaking down system-level safety targets to component-level requirements and supporting claims stated in reliability metrics. We then introduce a novel model-agnostic Reliability Assessment Model (RAM) for ML classifiers that utilises the operational profile and robustness verification evidence. We discuss the model assumptions and the inherent challenges of assessing ML reliability uncovered by our RAM and propose solutions to practical use. Probabilistic safety argument templates at the lower ML component-level are also developed based on the RAM. Finally, to evaluate and demonstrate our methods, we not only conduct experiments on synthetic/benchmark datasets but also scope our methods with case studies on simulated Autonomous Underwater Vehicles and physical Unmanned Ground Vehicles.
description: Preprint Accepted by ACM Transactions on Embedded Computing Systems
Limits to the sensitivity of a rare-earth-enabled cryogenic vibration sensor
Creators: name: Louchet-Chauvet, Anne
name: Chanelière, Thierry
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Cryogenics is a pivotal aspect in the development of quantum technologies. Closed-cycle devices have recently emerged as an environmentally friendly and low-maintenance alternative to liquid helium cryostats. Yet the larger level of vibrations in dry cryocoolers forbids their use in most sensitive applications. In a recent work, we have proposed an inertial, broadband, contactless sensor based on the piezospectroscopic effect, ie the natural sensitivity of optical lines to strain exhibited by impurities in solids. This sensor builds on the exceptional spectroscopic properties of rare earth ions and operates below 4K, where spectral hole burning considerably enhances the sensitivity. In this paper, we investigate the fundamental and technical limitations of this vibration sensor by comparing a rigid sample attachment to cold stage of a pulse-tube cryocooler and a custom-designed exchange gas chamber for acoustic isolation.
description: 7 pages, 5 figures
Bijection between Increasing Binary Trees and Rook Placements on Double Staircases
Creators: name: Deb, Bishal
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A19

description: In this paper, we shall construct a bijection between rook placements on double staircases (introduced by Josuat-Vergès in 2017) and increasing binary trees. We introduce two subclasses of rook placements on double staircases, which we call left and right-aligned rook placements. We show that their enumeration, while keeping track of a certain statistic, gives the $γ$-vectors of the Eulerian polynomials. We conclude with a discussion on a different bijection that fits in very well with our main bijection, and another discussion on generalising our main bijection. Our main bijection is a special case of a bijection due to Tewari (2019).
description: v2: Version accepted by the Electronic Journal of Combinatorics. v1: 20 pages, 6 figures, 4 tables (1 unnumbered)
Task-Space Clustering for Mobile Manipulator Task Sequencing
Creators: name: Nguyen, Quang-Nam
name: Adrian, Nicholas
name: Pham, Quang-Cuong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Mobile manipulators have gained attention for the potential in performing large-scale tasks which are beyond the reach of fixed-base manipulators. The Robotic Task Sequencing Problem for mobile manipulators often requires optimizing the motion sequence of the robot to visit multiple targets while reducing the number of base placements. A two-step approach to this problem is clustering the task-space into clusters of targets before sequencing the robot motion. In this paper, we propose a task-space clustering method which formulates the clustering step as a Set Cover Problem using bipartite graph and reachability analysis, then solves it to obtain the minimum number of target clusters with corresponding base placements. We demonstrated the practical usage of our method in a mobile drilling experiment containing hundreds of targets. Multiple simulations were conducted to benchmark the algorithm and also showed that our proposed method found, in practical time, better solutions than the existing state-of-the-art methods.
Graph Neural Network Predictions of Metal Organic Framework CO2 Adsorption Properties
Creators: name: Choudhary, Kamal
name: Yildirim, Taner
name: Siderius, Daniel
name: Kusne, Aaron Gilad
name: McDannald, Austin
name: Ortiz-Montalvo, Diana
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The increasing CO2 level is a critical concern and suitable materials are needed to capture such gases from the environment. While experimental and conventional computational methods are useful in finding such materials, they are usually slow and there is a need to expedite such processes. We use Atomistic Line Graph Neural Network (ALIGNN) method to predict CO2 adsorption in metal organic frameworks (MOF), which are known for their high functional tunability. We train ALIGNN models for hypothetical MOF (hMOF) database with 137953 MOFs with grand canonical Monte Carlo (GCMC) based CO2 adsorption isotherms. We develop high accuracy and fast models for pre-screening applications. We apply the trained model on CoREMOF database and computationally rank them for experimental synthesis. In addition to the CO2 adsorption isotherm, we also train models for electronic bandgaps, surface area, void fraction, lowest cavity diameter, and pore limiting diameter, and illustrate the strength and limitation of such graph neural network models. For a few candidate MOFs we carry out GCMC calculations to evaluate the deep-learning (DL) predictions.
Semantic-aware Digital Twin for Metaverse: A Comprehensive Review
Creators: name: Jagatheesaperumal, Senthil Kumar
name: Yang, Zhaohui
name: Yang, Qianqian
name: Huang, Chongwen
name: Xu, Wei
name: Shikh-Bahaei, Mohammad
name: Zhang, Zhaoyang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computers and Society (cs.CY)
subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences
subject: A.1; H.5; I.6; J.7; F.4

description: To facilitate the deployment of digital twins in Metaverse, the paradigm with semantic awareness has been proposed as a means for enabling accurate and task-oriented information extraction with inherent intelligence. However, this framework requires all devices in the Metaverse environment to be directly linked with the semantic model to enable faithful interpretation of messages. In contrast, this article introduces the digital twin framework, considering a smart industrial application, which enables semantic communication in conjugation with the Metaverse enabling technologies. The fundamentals of this framework are demonstrated on an industrial shopfloor management use case with a digital twin so as to improve its performance through semantic communication. An overview of semantic communication, Metaverse, and digital twins is presented. Integration of these technologies with the basic architecture as well as the impact on future industrial applications is presented. In a nutshell, this article showcases how semantic awareness can be an effective candidate in the implementation of digital twins for Metaverse applications.
description: 9 pages, 5 figures, 1 table
Kondo impurities in the Kitaev spin liquid: Numerical renormalization group solution and gauge-flux-driven screening
Creators: name: Vojta, Matthias
name: Mitchell, Andrew K.
name: Zschocke, Fabian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Kitaev's honeycomb-lattice compass model describes a spin liquid with emergent fractionalized excitations. Here we study the physics of isolated magnetic impurities coupled to the Kitaev spin-liquid host. We reformulate this Kondo-type problem in terms of a many-state quantum impurity coupled to a multichannel bath of Majorana fermions and present the numerically exact solution using Wilson's numerical renormalization group technique. Quantum phase transitions occur as a function of Kondo coupling and locally applied field. At zero field, the impurity moment is partially screened only when it binds an emergent gauge flux, and otherwise becomes free at low temperatures. We show how Majorana degrees of freedom determine the fixed-point properties, make contact with Kondo screening in pseudogap Fermi systems, and discuss effects away from the dilute limit.
description: 5+10 pages, 5+9 figs, (v2) minor modifications, final version as published
Domination of multilinear singular integrals by positive sparse forms
Creators: name: Culiuc, Amalia
name: Di Plinio, Francesco
name: Ou, Yumeng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B20, 42B25

description: We establish a uniform domination of the family of trilinear multiplier forms with singularity over a one-dimensional subspace by positive sparse forms involving $L^p$-averages. This class includes the adjoint forms to the bilinear Hilbert transforms. Our result strengthens the $L^p$-boundedness proved in \cite{MTT} and entails as a corollary a rich multilinear weighted theory. In particular, we obtain $L^{q_1}(v_1) \times L^{q_2}(v_2)$-boundedness of the bilinear Hilbert transform when the weights $v_j$ belong to the class $A_{\frac{q+1}{2}}\cap RH_2$. Our proof relies on a stopping time construction based on newly developed localized outer-$L^p$ embedding theorems for the wave packet transform. In an Appendix, we show how our domination principle can be applied to recover the vector-valued bounds for the bilinear Hilbert transforms recently proved by Benea and Muscalu.
description: 25 pages. Version 2: added some references. Added an appendix where the main theorem is used to recover vector-valued bounds
On the Spectral Efficiency of Massive MIMO Systems with Low-Resolution ADCs
Creators: name: Zhang, Jiayi
name: Dai, Linglong
name: Sun, Shengyang
name: Wang, Zhaocheng
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The low-resolution analog-to-digital convertor (ADC) is a promising solution to significantly reduce the power consumption of radio frequency circuits in massive multiple-input multiple-output (MIMO) systems. In this letter, we investigate the uplink spectral efficiency (SE) of massive MIMO systems with low-resolution ADCs over Rician fading channels, where both perfect and imperfect channel state information are considered. By modeling the quantization noise of low-resolution ADCs as an additive quantization noise, we derive tractable and exact approximation expressions of the uplink SE of massive MIMO with the typical maximal-ratio combining (MRC) receivers. We also analyze the impact of the ADC resolution, the Rician $K$-factor, and the number of antennas on the uplink SE. Our derived results reveal that the use of low-cost and low-resolution ADCs can still achieve satisfying SE in massive MIMO systems.
description: 4 pages, 2 figures, to appear in IEEE Communications Letters
Systems Architecture for Quantum Random Access Memory
Creators: name: Xu, Shifan
name: Hann, Connor T.
name: Foxman, Ben
name: Girvin, Steven M.
name: Ding, Yongshan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Hardware Architecture (cs.AR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Operating on the principles of quantum mechanics, quantum algorithms hold the promise for solving problems that are beyond the reach of the best-available classical algorithms. An integral part of realizing such speedup is the implementation of quantum queries, which read data into forms that quantum computers can process. Quantum random access memory (QRAM) is a promising architecture for realizing quantum queries. However, implementing QRAM in practice poses significant challenges, including query latency, memory capacity and fault-tolerance. In this paper, we propose the first end-to-end system architecture for QRAM. First, we introduce a novel QRAM that hybridizes two existing implementations and achieves asymptotically superior scaling in space (qubit number) and time (circuit depth). Like in classical virtual memory, our construction enables queries to a virtual address space larger than what is actually available in hardware. Second, we present a compilation framework to synthesize, map, and schedule QRAM circuits on realistic hardware. For the first time, we demonstrate how to embed large-scale QRAM on a 2D Euclidean space, such as a grid layout, with minimal routing overhead. Third, we show how to leverage the intrinsic biased-noise resilience of the proposed QRAM for implementation on either Noisy Intermediate-Scale Quantum (NISQ) or Fault-Tolerant Quantum Computing (FTQC) hardware. Finally, we validate these results numerically via both classical simulation and quantum hardware experimentation. Our novel Feynman-path-based simulator allows for efficient simulation of noisy QRAM circuits at a larger scale than previously possible. Collectively, our results outline the set of software and hardware controls needed to implement practical QRAM.
From Reaction-Diffusion Systems to Confined Brownian Motion
Creators: name: Martens, Steffen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: In this note, we demonstrated for the first time that one can derive an expression for the effective diffusion coefficient, equal to the Lifson-Jackson formula, using a subsequent homogenization of the 1D reaction-diffusion-advection equation. The latter has been derived by applying asymptotic perturbation analysis to the underlying 3D reaction-diffusion equation with spatially dependent no-flux boundary conditions and incorporates the effects of boundary interactions on the reactants via a boundary-induced advection term [S. Martens et al, Phys. Rev. E 91, 022902 (2015)].
description: 2 pages, submitted to J. Chem. Phys
Asymptotic normality of total least squares estimator in a multivariate errors-in-variables model $AX=B$
Creators: name: Kukush, Alexander
name: Tsaregorodtsev, Yaroslav
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider a multivariate functional measurement error model $AX\approx B$. The errors in $[A,B]$ are uncorrelated, row-wise independent, and have equal (unknown) variances. We study the total least squares estimator of $X$, which, in the case of normal errors, coincides with the maximum likelihood one. We give conditions for asymptotic normality of the estimator when the number of rows in $A$ is increasing. Under mild assumptions, the covariance structure of the limit Gaussian random matrix is nonsingular. For normal errors, the results can be used to construct an asymptotic confidence interval for a linear functional of $X$.
description: Published at http://dx.doi.org/10.15559/16-VMSTA50 in the Modern Stochastics: Theory and Applications (https://www.i-journals.org/vtxpp/VMSTA) by VTeX (http://www.vtex.lt/). With the Errata
Majorana zero modes in Y-shape interacting Kitaev wires
Creators: name: Pandey, Bradraj
name: Kaushal, Nitin
name: Alvarez, Gonzalo
name: Dagotto, Elbio
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Motivated by the recent experimental realization of minimal Kitaev chains using quantum dots, we investigate the Majorana zero modes (MZM) in $Y$-shape Kitaev wires. We solve the associated Kitaev models analytically at the sweet spot ($t_h=Δ$) and derive the exact form of MZM wave-functions in this geometry. The novelty of our result is the observation of multi-site MZMs located near the junction center on the nearby edge sites of each leg. This result is important for potential braiding of Majoranas and the performance of $Y$-junctions made from arrays of quantum dots. Furthermore, we study the stability of local (single-site) and multi-site MZMs modes in the presence of Coulomb repulsion, using density matrix renormalization group theory. Our local density-of-states calculation shows that these multi-site MZMs are as equally topologically protected as the single-site MZMs when in the presence of Coulomb repulsion or when away from the sweet-spot.
description: 8 pages and 5 figures
Twistor geometry of the Flag manifold
Creators: name: Altavilla, Amedeo
name: Ballico, Edoardo
name: Brambilla, Maria Chiara
name: Salamon, Simon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: Primary: 32L25, 14M15, Secondary: 53C15, 53C28, 14J10, 15A21

description: A study is made of algebraic curves and surfaces in the flag manifold $\mathbb{F}=SU(3)/T^2$, and their configuration relative to the twistor projection $π$ from $\mathbb{F}$ to the complex projective plane $\mathbb{CP}^2$, defined with the help of an anti-holomorphic involution $j$. This is motivated by analogous studies of algebraic surfaces of low degree in the twistor space $\mathbb{CP}^3$ of $S^4$. Deformations of twistor fibres project to real surfaces in $\mathbb{CP}^2$, whose metric geometry is investigated. Attention is then focussed on toric Del Pezzo surfaces that are the simplest type of surfaces in $\mathbb{F}$ of bidegree $(1,1)$. These surfaces define orthogonal complex structures on specified dense open subsets of $\mathbb{CP}^2$ relative to its Fubini-Study metric. The discriminant loci of various surfaces of bidegree $(1,1)$ are determined, and bounds given on the number of twistor fibres that are contained in more general algebraic surfaces in $\mathbb{F}$.
description: 34 pages; 7 figures. Comments about v2: we added a couple of remarks, clarified some proof, removed several typos and updated the reference list. To appear on Mathematische Zeitschrift
title: What happens to energy beyond the meter?
Creators: name: Haslett, A.
Publisher: name: ETI
Year: 2016
Subjects: subject: Cross Cutting Programme (Strategy)
subject: OTHER CROSS-CUTTING TECHNOLOGIES or RESEARCH (Other Supporting Data)

description: Presentation to Reinventing Energy Summit- November 25th 2016.The slides cover:Annual energy use per person in UK (2010)45GW each of PV and WindHeating is very variableComplex socio-technical systemHierarchy of Appliance OperationPower usage
Entanglement and topological interfaces
Creators: name: Brehm, Enrico M.
name: Brunner, Ilka
name: Jaud, Daniel
name: Schmidt-Colinet, Cornelius
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this paper we consider entanglement entropies in two-dimensional conformal field theories in the presence of topological interfaces. Tracing over one side of the interface, the leading term of the entropy remains unchanged. The interface however adds a subleading contribution, which can be interpreted as a relative (Kullback-Leibler) entropy with respect to the situation with no defect inserted. Reinterpreting boundaries as topological interfaces of a chiral half of the full theory, we rederive the left/right entanglement entropy in analogy with the interface case. We discuss WZW models and toroidal bosonic theories as examples.
description: 30 pages, 2 figures. References added, typos corrected
Practical Results for AOEU
Creators: name: Breggeman, Floris
Publisher: name: Zenodo
Year: 2020
Subjects: Graph Isomorphism, Pathfinding, Algorithm, Computational Complexity

description: This document contains graphs with practical results for the AOEU algorithm 10.5281/zenodo.3911824, which could not fit in the paper due to size restrictions.
Breytenbach, Cilliers / Hoppe, Rudolf (Hrsg.), Neutestamentliche Wissenschaft nach 1945
Creators: name: Graf-Stuhlhofer, Franz
Publisher: name: Jahrbuch für evangelikale Theologie
Year: 2025

description: 1823350828
description: Jahrbuch für evangelikale Theologie, V. 23 (2009): Jahrbuch für evangelikale Theologie, Band 23