cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Aguilers, E. - Briones, Joaquín – Iceta Ramón, O Espirito do Senhor, 8-Religião. Ed. A.O. 1 vol. de 280 ps. 265x180. Braga 1989
Creators: name: Arieiro, José
Publisher: name: Theologica
Year: 1987

description: Theologica, v. 22 n. 1-4 (1987): Volumes 22, 23 (1987-1988)
Julia as a unifying end-to-end workflow language on the Frontier exascale system
Creators: name: Godoy, William F.
name: Valero-Lara, Pedro
name: Anderson, Caira
name: Lee, Katrina W.
name: Gainaru, Ana
name: da Silva, Rafael Ferreira
name: Vetter, Jeffrey S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: We evaluate Julia as a single language and ecosystem paradigm powered by LLVM to develop workflow components for high-performance computing. We run a Gray-Scott, 2-variable diffusion-reaction application using a memory-bound, 7-point stencil kernel on Frontier, the US Department of Energy's first exascale supercomputer. We evaluate the performance, scaling, and trade-offs of (i) the computational kernel on AMD's MI250x GPUs, (ii) weak scaling up to 4,096 MPI processes/GPUs or 512 nodes, (iii) parallel I/O writes using the ADIOS2 library bindings, and (iv) Jupyter Notebooks for interactive analysis. Results suggest that although Julia generates a reasonable LLVM-IR, a nearly 50% performance difference exists vs. native AMD HIP stencil codes when running on the GPUs. As expected, we observed near-zero overhead when using MPI and parallel I/O bindings for system-wide installed implementations. Consequently, Julia emerges as a compelling high-performance and high-productivity workflow composition language, as measured on the fastest supercomputer in the world.
description: 11 pages, 8 figures, accepted at the 18th Workshop on Workflows in Support of Large-Scale Science (WORKS23), IEEE/ACM The International Conference for High Performance Computing, Networking, Storage, and Analysis, SC23
Realization of a Universal Quantum Gate Set for Itinerant Microwave Photons
Creators: name: Reuer, Kevin
name: Besse, Jean-Claude
name: Wernli, Lucien
name: Magnard, Paul
name: Kurpiers, Philipp
name: Norris, Graham J.
name: Wallraff, Andreas
name: Eichler, Christopher
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Deterministic photon-photon gates enable the controlled generation of entanglement between mobile carriers of quantum information. Such gates have thus far been exclusively realized in the optical domain and by relying on post-selection. Here, we present a non-post-selected, deterministic, photon-photon gate in the microwave frequency range realized using superconducting circuits. We emit photonic qubits from a source chip and route those qubits to a gate chip with which we realize a universal gate set by combining controlled absorption and re-emission with single-qubit gates and qubit-photon controlled-phase gates. We measure quantum process fidelities of $75\,\%$ for single- and of $57\,\%$ for two-qubit gates, limited mainly by radiation loss and decoherence. This universal gate set has a wide range of potential applications in superconducting quantum networks.
Molecular dynamics study of diffusionless phase transformations in HMX: $β$-HMX twinning and $β$-$ε$ phase transition
Creators: name: Pereverzev, Andrey
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We use molecular dynamics to study mechanism of deformation twinning of $β$-1,3,5,7-tetranitro-1,3,5,7-tetrazocane ($β$-HMX) in the $P2_1/n$ space group setting for the twin system specified by $K_1=(101)$, $η_1=[10\overline{1}]$, $K_2=(10\overline{1})$, and $η_2=[101]$ at $T=1$ K and 300 K. Twinning of a single perfect crystal was induced by imposing increasing stress. The following three forms of stress were considered: uniaxial compression along $[001]$, shear stress in $K_1$ plane along $η_1$ direction, and shear stress in $K_2$ plane along $η_2$ direction. In all cases the crystal transforms to its twin by the same mechanism: as the stress increases, the $a$ and $c$ lattice parameters become, respectively, longer and shorter; soon after the magnitude of $a$ exceeds that of $c$ the system undergoes a quick phase-transition-like transformation. This transformation can be approximately separated into two stages: glide of the essentially intact $\{101\}$ crystal planes along $\langle10\overline{1}\rangle$ crystal directions followed by rotations of all HMX molecules accompanied by N-NO$_2$ and CH$_2$ group rearrangements. The overall process corresponds to a military transformation. If uniaxial compression along $[001]$ is applied to a $β$-HMX crystal which is already subject to a hydrostatic pressure $\gtrsim 10$ GPa, the transformation described above proceeds through the crystal-plane gliding stage but only minor molecular rearrangements occurs. This results in a high-pressure phase of HMX which belongs to the $P2_1/n$ space group. The coexistence curve for this high-pressure phase and $β$-HMX is constructed using the harmonic approximation for the crystal Hamiltonians.
On Applying the Lackadaisical Quantum Walk Algorithm to Search for Multiple Solutions on Grids
Creators: name: de Carvalho, Jonathan H. A.
name: de Souza, Luciano S.
name: Neto, Fernando M. de Paula
name: Ferreira, Tiago A. E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Emerging Technologies (cs.ET)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum computing promises to improve the information processing power to levels unreachable by classical computation. Quantum walks are heading the development of quantum algorithms for searching information on graphs more efficiently than their classical counterparts. A quantum-walk-based algorithm standing out in the literature is the lackadaisical quantum walk. The lackadaisical quantum walk is an algorithm developed to search graph structures whose vertices have a self-loop of weight $l$. This paper addresses several issues related to applying the lackadaisical quantum walk to search for multiple solutions on grids successfully. Firstly, we show that only one of the two stopping conditions found in the literature is suitable for simulations. We also demonstrate that the final success probability depends on both the space density of solutions and the relative distance between solutions. Furthermore, this work generalizes the lackadaisical quantum walk to search for multiple solutions on grids of arbitrary dimensions. In addition, we propose an optimal adjustment of the self-loop weight $l$ for such $d$-dimensional grids. It turns out other fits of $l$ found in the literature are particular cases. Finally, we observe a two-to-one relation between the steps of the lackadaisical quantum walk and Grover's algorithm, which requires modifications in the stopping condition. In conclusion, this work deals with practical issues one should consider when applying the lackadaisical quantum walk, besides expanding the technique to a broader range of search problems.
description: Accepted manuscript. 23 pages, 7 figures
Guerra, Paulo, Celebrar a Festa. Escuta da Palavra. Ed. A.O. 1 vol. de 450 ps. 205x145. Braga 1988
Creators: name: Arieiro, José
Publisher: name: Theologica
Year: 1987

description: Theologica, v. 22 n. 1-4 (1987): Volumes 22, 23 (1987-1988)
Energy Efficiency Maximization of Massive MIMO Communications With Dynamic Metasurface Antennas
Creators: name: You, Li
name: Xu, Jie
name: Alexandropoulos, George C.
name: Wang, Jue
name: Wang, Wenjin
name: Gao, Xiqi
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: Future wireless communications are largely inclined to deploy massive numbers of antennas at the base stations (BSs) by leveraging cost- and energy-efficient as well as environmentally friendly antenna arrays. The emerging technology of dynamic metasurface antennas (DMAs) is promising to realize such massive antenna arrays with reduced physical size, hardware cost, and power consumption. The goal of this paper is the optimization of the energy efficiency (EE) performance of DMA-assisted massive multiple-input multiple-output (MIMO) wireless communications. Focusing on the uplink, we propose an algorithmic framework for designing the transmit precoding of each multi-antenna user and the DMA tuning strategy at the BS to maximize the EE performance, considering the availability of either instantaneous or statistical channel state information (CSI). Specifically, the proposed framework is shaped around Dinkelbach's transform, alternating optimization, and deterministic equivalent methods. In addition, we obtain a closed-form solution to the optimal transmit signal directions for the statistical CSI case, which simplifies the corresponding transmission design for the multiple-antenna case. Our numerical results verify the good convergence behavior of the proposed algorithms, and showcase the considerable EE performance gains of the DMA-assisted massive MIMO transmissions over the baseline schemes.
description: to appear in IEEE Transactions on Wireless Communications
Intrinsic innervation of the smooth muscle of the guinea-pig terminal bile duct
Creators: name: Vongalis., Fivos
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Very large domain wall velocities in Pt/Co/Gd trilayers with Dzyaloshinskii-Moriya interaction
Creators: name: Pham, Thai Ha
name: Vogel, J.
name: Sampaio, J.
name: Vaňatka, M.
name: Rojas, J. -C.
name: Bonfim, M.
name: Chaves, D. S.
name: Choueikani, F.
name: Ohresser, P.
name: Otero, E.
name: Thiaville, A.
name: Pizzini, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We carried out measurements of domain wall (DW) velocities driven by magnetic field pulses in symmetric Pt/Co/Pt and asymmetric Pt/Co/AlOx, Pt/Co/GdOx and Pt/Co/Gd trilayers with ultrathin Co layers and perpendicular magnetic anisotropy. In agreement with theoretical models, the maximum observed velocity is much larger in the asymmetric samples, where the interfacial Dzyaloshinskii-Moriya interaction (DMI) stabilises chiral Néel walls, than in the symmetric stack. In addition, in Pt/Co/Gd very large DW speeds (up to 600 m/s) are obtained, 2.5 times larger than in samples with oxidised Gd. Magnetic measurements reveal that this may be explained by the anti-parallel coupling between the magnetic moments of Gd and Co at the Gd/Co interface, leading to a decrease of the total magnetisation. In quantitative agreement with analytical models, in all samples the maximum observed DW speed scales as D=Ms, where D is the strength of the DMI and Ms the spontaneous magnetisation.
On finite groups whose power graph is a cograph
Creators: name: Cameron, Peter J.
name: Manna, Pallabi
name: Mehatari, Ranjit
Publisher: name: arXiv
Year: 2021
Subjects: subject: Group Theory (math.GR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C25

description: A $P_4$-free graph is called a cograph. In this paper we partially characterize finite groups whose power graph is a cograph. As we will see, this problem is a generalization of the determination of groups in which every element has prime power order, first raised by Graham Higman in 1957 and fully solved very recently. First we determine all groups $G$ and $H$ for which the power graph of $G\times H$ is a cograph. We show that groups whose power graph is a cograph can be characterised by a condition only involving elements whose orders are prime or the product of two (possibly equal) primes. Some important graph classes are also taken under consideration. For finite simple groups we show that in most of the cases their power graphs are not cographs: the only ones for which the power graphs are cographs are certain groups PSL$(2,q)$ and Sz$(q)$ and the group PSL$(3,4)$. However, a complete determination of these groups involves some hard number-theoretic problems.
description: 20 Pages
Retrieving Supporting Evidence for Generative Question Answering
Creators: name: Huo, Siqing
name: Arabzadeh, Negar
name: Clarke, Charles L. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Current large language models (LLMs) can exhibit near-human levels of performance on many natural language-based tasks, including open-domain question answering. Unfortunately, at this time, they also convincingly hallucinate incorrect answers, so that responses to questions must be verified against external sources before they can be accepted at face value. In this paper, we report two simple experiments to automatically validate generated answers against a corpus. We base our experiments on questions and passages from the MS MARCO (V1) test collection, and a retrieval pipeline consisting of sparse retrieval, dense retrieval and neural rerankers. In the first experiment, we validate the generated answer in its entirety. After presenting a question to an LLM and receiving a generated answer, we query the corpus with the combination of the question + generated answer. We then present the LLM with the combination of the question + generated answer + retrieved answer, prompting it to indicate if the generated answer can be supported by the retrieved answer. In the second experiment, we consider the generated answer at a more granular level, prompting the LLM to extract a list of factual statements from the answer and verifying each statement separately. We query the corpus with each factual statement and then present the LLM with the statement and the corresponding retrieved evidence. The LLM is prompted to indicate if the statement can be supported and make necessary edits using the retrieved material. With an accuracy of over 80%, we find that an LLM is capable of verifying its generated answer when a corpus of supporting material is provided. However, manual assessment of a random sample of questions reveals that incorrect generated answers are missed by this verification process. While this verification process can reduce hallucinations, it can not entirely eliminate them.
description: arXiv admin note: text overlap with arXiv:2306.13781
Roggendorf, Johannes, El sistema del Impuesto eclesiástico en Ia República Federal de Alemanha. Ed. EUNSA. 1 vol. de 268 ps. 215x145. Pamplona 1983
Creators: name: Marques, José António
Publisher: name: Theologica
Year: 1987

description: Theologica, v. 22 n. 1-4 (1987): Volumes 22, 23 (1987-1988)
1.4-GHz observations of extended giant radio galaxies
Creators: name: Wezgowiec, M.
name: Jamrozy, M.
name: Mack, K. -H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This paper presents 1.4-GHz radio continuum observations of 15 very extended radio galaxies. These sources are so large that most interferometers lose partly their structure and total flux density. Therefore, single-dish detections are required to fill in the central (u,v) gap of interferometric data and obtain reliable spectral index patterns across the structures, and thus also an integrated radio continuum spectrum. We have obtained such 1.4-GHz maps with the 100-m Effelsberg telescope and combined them with the corresponding maps available from the NVSS. The aggregated data allow us to produce high-quality images, which can be used to obtain physical parameters of the mapped sources. The combined images reveal in many cases extended low surface-brightness cocoons.
description: 39 pages, 19 figures, 3 tables. Published in AcA
Dubrowsky, Sérgio, Los diezmos de índias en la legislación (ss. XVI y XVII). Ed. EUNSA. 1 vol. de 150 ps. 215x145. Pamplona 1989
Creators: name: Marques, José António
Publisher: name: Theologica
Year: 1987

description: Theologica, v. 22 n. 1-4 (1987): Volumes 22, 23 (1987-1988)
Necessary and Sufficient Conditions for the Linearizability of Two-Input Systems by a Two-Dimensional Endogenous Dynamic Feedback
Creators: name: Gstöttner, Conrad
name: Kolar, Bernd
name: Schöberl, Markus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: Differential Geometry (math.DG)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We propose easily verifiable necessary and sufficient conditions for the linearizability of two-input systems by an endogenous dynamic feedback with a dimension of at most two.
Rodriguez-Ocaña, Rafael, Las asociaciones de clérigos en la Iglesia. Ed. EUNSA. 1 vol. de 288 ps. 215x145. Pamplona 1989
Creators: name: Marques, José António
Publisher: name: Theologica
Year: 1987

description: Theologica, v. 22 n. 1-4 (1987): Volumes 22, 23 (1987-1988)
On the robustness of the pendulum model for large-amplitude longitudinal oscillations in prominences
Creators: name: Luna, M.
name: Terradas, J.
name: Khomenko, E.
name: Collados, M.
name: de Vicente, A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Large-amplitude longitudinal oscillations (LALOs) in prominences are spectacular manifestations of the solar activity. In such events nearby energetic disturbances induce periodic motions on filaments with displacements comparable to the size of the filaments themselves and with velocities larger than 20 km/s. The pendulum model, in which the gravity projected along a rigid magnetic field is the restoring force, was proposed to explain these events. However, it can be objected that in a realistic situation where the magnetic field reacts to the mass motion of the heavy prominence, the simplified pendulum model could be no longer valid. We have performed non-linear time-dependent numerical simulations of LALOs considering a dipped magnetic field line structure. In this work we demonstrate that for even relatively weak magnetic fields the pendulum model works very well. We therefore validate the pendulum model and show its robustness, with important implications for prominence seismology purposes. With this model it is possible to infer the geometry of the dipped field lines that support the prominence.
description: Accepted for publication in The Astrophysical Journal
Unified products for Jordan algebras. Applications
Creators: name: Agore, A. L.
name: Militaru, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: Given a Jordan algebra $A$ and a vector space $V$, we describe and classify all Jordan algebras containing $A$ as a subalgebra of codimension ${\rm dim}_k (V)$ in terms of a non-abelian cohomological type object ${\mathcal J}_{A} \, (V, \, A)$. Any such algebra is isomorphic to a newly introduced object called \emph{unified product} $A \, \natural \, V$. The crossed/twisted product of two Jordan algebras are introduced as special cases of the unified product and the role of the subsequent problem corresponding to each such product is discussed. The non-abelian cohomology ${\rm H}^2_{\rm nab} \, (V, \, A )$ associated to two Jordan algebras $A$ and $V$ which classifies all extensions of $V$ by $A$ is also constructed. Several applications and examples are given: we prove that ${\rm H}^2_{\rm nab} \, (k, \, k^n)$ is identified with the set of all matrices $D\in M_n(k)$ satisfying $2\, D^3 - 3 \, D^2 + D = 0$.
description: Continues arXiv:1011.1633, arXiv:1011.2174, arXiv:1301.5442, arXiv:1305.6022, arXiv:1307.2540, arXiv:1308.5559, arXiv:1309.1986, arXiv:1507.08146; arXiv:2105.14722; restates preliminaries and definitions for sake of clarity
Arrieta, Juan Ignacio, El Sinodo de los Obispos. Ed. EUNSA. 1 vol. de 256 ps. 215x145. Pamplona 1987
Creators: name: Marques, José António
Publisher: name: Theologica
Year: 1987

description: Theologica, v. 22 n. 1-4 (1987): Volumes 22, 23 (1987-1988)
Classification of magnons in Rotated Ferromagnetic Heisenberg model and their competing responses in transverse fields
Creators: name: Sun, Fadi
name: Ye, Jinwu
name: Liu, Wu-Ming
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Competing orders is a general concept to describe various quantum phases and transitions in various materials. One efficient way to investigate competing orders is to first classify different class of excitations in a given quantum phase, then study their competing responses under various external probes. This strategy may not only lead to deep understanding of the quantum phase itself, but also its deep connections to various other quantum phases nearby. We implement this approach by studying the Rotated Ferromagnetic Heisenberg model (RFHM) in two different transverse fields $h_x$ and $h_z$ which can be intuitively visualized as studying spin-orbit couplings (SOC) effects in 2d Ising or anisotropic XY model in a transverse field. At a special SOC class, it was known that the RFHM at a zero field owns an exact ground state called Y-x state. It supports non only the commensurate C-C$_0$ and C-C$_π $ magnons, but also the in-commensurate C-IC magnons. These magnons are non-relativistic, not contained in the exact ground state, so need to be thermally excited. Their dramatic response under the longitudinal $ h_y $ field was recently worked out by the authors. Here we find they respond very differently under the two transverse fields. Any $h_x$ ($h_z$) changes the collinear Y-x state to a canted co-planar YX-x (YZ-x) state which suffers quantum fluctuations. The C-C$_0$, C-C$_π $ and C-IC magnons sneak into the quantum ground state, become relativistic and play leading roles even at $ T=0 $. We map out the boundaries among the C-C$_0$, C-C$_π $ and C-IC magnons, especially the detailed evolution of the C-IC magnons inside the canted phases. As $h_x$ ($h_z$) increases further, the C-C$_0$ magnons always win the competition and emerge as the seeds to drive a transition from the YX-x (YZ-x) to the X-FM ( Z-FM ) which is shown to be in the 3d Ising universality class.
description: 15 Pages, REVTEX4-1, 10 Color figures
Calvo Alvarez, Joaquín, Orden público y factor religioso en la Constitución española. Ed. EUNSA. 1 vol. de 294 ps. 215x145. Pamplona 1983
Creators: name: Marques, José António
Publisher: name: Theologica
Year: 1987

description: Theologica, v. 22 n. 1-4 (1987): Volumes 22, 23 (1987-1988)
Northern Hemisphere UHECR data further supports CMBR photons with weak U(1) component
Creators: name: Piasecki, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: I further test the theory that the Cosmic Background Radiation (CBR) is made of photons with a weak U(1) component. Tipler (2005) has previously argued that the consistency of the Standard Model (SM) with the Second Law of Thermodynamics requires the early universe CBR to be composed mainly of an SU(2) gauge field. The U(1) field would be suppressed. One of the consequences of this approach is that the Ultra High Energy Cosmic Rays (UHECR) would be able to propagate much further than conventionally accepted, as an SU(2) dominant CBR would be largely unable to couple with right handed fermions. I test if this novel theory solves the problem of UHECR origin by finding suitable candidates up to a redshift z = 0.1 within three degrees of the arrival direction. Utilizing the Fly's Eye Northern Hemisphere UHECR data, I identified candidates with 80\% success for the Northern Sky UHECR (98.7\% if certain celestial objects which are likely to be Active Galactic Nuclei are absolutely identified as such). This is parsimonious with the CBR theory, which has other important implications for the Standard Model, early universe cosmology, and the origin of matter and anti-matter. This builds off of Tipler and Piasecki (2018), where we have reviewed UHECR data from the Southern Hemisphere to get a 86\% success identification rate. We predict that the remaining UHECR not paired with a potential source will have sources identified upon closer telescopic investigations of these regions. Other recent experiments further suggest an SU(2) dominant composition of the CBR photons. The problem of UHECR origin may be solved.
Cytological and molecular organization of ribosomal RNA genes in lilium
Creators: name: Von Kalm., Laurie
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Data-driven discovery of intrinsic dynamics
Creators: name: Floryan, Daniel
name: Graham, Michael D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Dynamical models underpin our ability to understand and predict the behavior of natural systems. Whether dynamical models are developed from first-principles derivations or from observational data, they are predicated on our choice of state variables. The choice of state variables is driven by convenience and intuition, and in the data-driven case the observed variables are often chosen to be the state variables. The dimensionality of these variables (and consequently the dynamical models) can be arbitrarily large, obscuring the underlying behavior of the system. In truth, these variables are often highly redundant and the system is driven by a much smaller set of latent intrinsic variables. In this study, we combine the mathematical theory of manifolds with the representational capacity of neural networks to develop a method that learns a system's intrinsic state variables directly from time series data, and also learns predictive models for their dynamics. What distinguishes our method is its ability to reduce data to the intrinsic dimensionality of the nonlinear manifold they live on. This ability is enabled by the concepts of charts and atlases from the theory of manifolds, whereby a manifold is represented by a collection of patches that are sewn together -- a necessary representation to attain intrinsic dimensionality. We demonstrate this approach on several high-dimensional systems with low-dimensional behavior. The resulting framework provides the ability to develop dynamical models of the lowest possible dimension, capturing the essence of a system.
description: 27 pages + 15 pages Supplementary Information
Tools for Quantum Computing Based on Decision Diagrams
Creators: name: Wille, Robert
name: Hillmich, Stefan
name: Burgholzer, Lukas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: With quantum computers promising advantages even in the near-term NISQ era, there is a lively community that develops software and toolkits for the design of corresponding quantum circuits. Although the underlying problems are different, expertise from the design automation community, which developed sophisticated design solutions for the conventional realm in the past decades, can help here. In this respect, decision diagrams provide a promising foundation for tackling many design tasks such as simulation, synthesis, and verification of quantum circuits. However, users of the corresponding tools often do not have a proper background or an intuition about how these methods based on decision diagrams work and what their strengths and limits are. In this work, we first review the concepts of how decision diagrams can be employed, e.g., for the simulation and verification of quantum circuits. Afterwards, in an effort to make decision diagrams for quantum computing more accessible, we then present a visualization tool for quantum decision diagrams, which allows users to explore the behavior of decision diagrams in the design tasks mentioned above. Finally, we present decision diagram-based tools for simulation and verification of quantum circuits using the methods discussed above as part of the open-source JKQ quantum toolset---a set of tools for quantum computing developed at the Johannes Kepler University (JKU) Linz and released under the MIT license. More information about the corresponding tools is available at https://github.com/iic-jku/. By this, we provide an introduction of the concepts and tools for potential users who would like to work with them as well as potential developers aiming to extend them.
description: 16 pages, 10 figures, to be published in the ACM Transactions on Quantum Computing special issue on software tools for quantum computing
Interpreting simple noun phrases : the process of prenominal modification
Creators: name: von Baggo., Karola Lisa
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Geometric properties of evolutionary graph states and their detection on a quantum computer
Creators: name: Gnatenko, Kh. P.
name: Laba, H. P.
name: Tkachuk, V. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Geometric properties of evolutionary graph states of spin systems generated by the operator of evolution with Ising Hamiltonian are examined, using their relationship with fluctuations of energy. We find that the geometric characteristics of the graph states depend on properties of the corresponding graphs. Namely, it is obtained that the fluctuations of energy in graph states and therefore the velocity of quantum evolution, the curvature and the torsion of the states are related with the total number of edges, triangles and squares in the corresponding graphs. The obtained results give a possibility to quantify the number of edges, triangles and squares in a graph on a quantum devise and achieve quantum supremacy in solving this problem with the development of a multi-qubit quantum computer. Geometric characteristics of graph states corresponding to a chain, a triangle, and a square are detected on the basis of calculations on IBM's quantum computer ibmq-manila.
PULSEE: A software for the quantum simulation of an extensive set of magnetic resonance observables
Creators: name: Candoli, Davide
name: Nikolov, Ilija K.
name: Brito, Lucas Z.
name: Car, Stephen
name: Sanna, Samuele
name: Mitrović, Vesna F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present an open-source software for the simulation of observables in magnetic resonance experiments, including nuclear magnetic/quadrupole resonance NMR/NQR and electron spin resonance (ESR), developed to assist experimental research in the design of new strategies for the investigation of fundamental quantum properties of materials, as inspired by magnetic resonance protocols that emerged in the context of quantum information science (QIS). The package introduced here enables the simulation of both standard NMR spectroscopic observables and the time-evolution of an interacting single-spin system subject to complex pulse sequences, i.e. quantum gates. The main purpose of this software is to facilitate in the development of much needed novel NMR-based probes of emergent quantum orders, which can be elusive to standard experimental probes. The software is based on a quantum mechanical description of nuclear spin dynamics in NMR/NQR experiments and has been widely tested on available theoretical and experimental results. Moreover, the structure of the software allows for basic experiments to easily be generalized to more sophisticated ones, as it includes all the libraries required for the numerical simulation of generic spin systems. In order to make the program easily accessible to a large user base, we developed a user-friendly graphical interface, Jupyter notebooks, and fully-detailed documentation. Lastly, we portray several examples of the execution of the code that illustrate the potential of a novel NMR paradigm, inspired by QIS, for efficient investigation of emergent phases in strongly correlated materials.
description: 51 pages
Natural Language Processing Models That Automate Programming Will Transform Chemistry Research and Teaching
Creators: name: Hocky, Glen M.
name: White, Andrew D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Natural language processing models have emerged that can generate usable software and automate a number of programming tasks with high fidelity. These tools have yet to have an impact on the chemistry community. Yet, our initial testing demonstrates that this form of Artificial Intelligence is poised to transform chemistry and chemical engineering research. Here, we review developments that brought us to this point, examine applications in chemistry, and give our perspective on how this may fundamentally alter research and teaching.
description: 6 pages, 3 figures, plus 8 page SI with additional examples and extended figure details
Spin-lattice coupling mediated multiferroicity in (ND4)2FeCl5D2O
Creators: name: Tian, W.
name: Cao, Huibo
name: Wang, Jincheng
name: Ye, Feng
name: Matsuda, M.
name: Yan, J. -Q.
name: Liu, Yaohua
name: Garlea, V. O.
name: Chakoumakos, B. C.
name: Sales, B. C.
name: Fishman, Randy S.
name: Fernandez-Baca, J. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a neutron diffraction study of the multiferroic mechanism in (ND4)2FeCl5D2O, a molecular compound that exhibits magnetically induced ferroelectricity. This material exhibits two successive magnetic transitions on cooling: a long-range order transition to an incommensurate (IC) collinear sinusoidal spin state at TN=7.3 K, followed by a second transition to an IC cycloidal spin state at TFE=6.8 K, the later of which is accompanied by spontaneous ferroelectric polarization. The cycloid structure is strongly distorted by spin-lattice coupling as evidenced by the observations of both odd and even higher-order harmonics associated with the cycloid wave vector, and a weak commensurate phase that coexists with the IC phase. The appearance of the 2nd-order harmonic coincides with the onset of the electric polarization, thereby providing unambiguous evidence that the induced electric polarization is mediated by the spin-lattice interaction. Our results for this system, in which the orbital angular momentum is expected to be quenched, are remarkably similar to those of the prototypical TbMnO3, in which the magnetoelectric effect is attributed to spin-orbit coupling.
description: 5 pages, 4 figures
Emergence of fractal cosmic space from fractional quantum gravity
Creators: name: Junior, P. F. da Silva
name: Costa, E. W. de Oliveira
name: Jalalzadeh, S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Based on Padmanabhan's theory, the spatial expansion of the Universe can be explained by the emergence of space as cosmic time progresses. To further explore this idea, we have developed fractional-fractal Friedmann and Raychaudhuri equations for an isotropic and homogeneous universe. Our analysis has also delved into how Padmanabhan's concept fits into the framework of fractional quantum gravity. Our research shows that a fractal horizon model strongly supports the validity of the emerging Universe paradigm and its connection to horizon thermodynamics. This study indicates early how the emergent gravity perspective might manifest in quantum gravity. By utilizing the fractional-fractal Friedmann and Raychaudhuri equations, we have established that the mainstream cosmology model can be justified without a dark matter component. As a result, the standard $Λ$CDM model has been reduced to $Λ$-Cold Baryonic Matter, which has significant implications for our understanding of the Universe.
description: 20 pages, 1 figure, to appear in Eur. Phys. J. Plus
Dynamics of visons and thermal Hall effect in perturbed Kitaev models
Creators: name: Joy, Aprem P.
name: Rosch, Achim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A vison is an excitation of the Kitaev spin liquid which carries a $\mathbb Z_2$ gauge flux. While immobile in the pure Kitaev model, it becomes a dynamical degree of freedom in the presence of perturbations. We study an isolated vison in the isotropic Kitaev model perturbed by a small external magnetic field $h$, an offdiagonal exchange interactions $Γ$ and a Heisenberg coupling $J$. In the ferromagnetic Kitaev model, the dressed vison obtains a dispersion linear in $Γ$ and $h$ and a fully universal low-$T$ mobility, $μ=6 v_m^2/T^{2}$, where $v_m$ is the velocity of Majorana fermions. In contrast, in the antiferromagnetic Kitaev model interference effects suppress the coherent propagation and an incoherent Majorana-assisted hopping leads to a $T$-independent mobility. The motion of a single vison due to Heisenberg interactions is strongly suppressed for both signs of the Kitaev coupling. Vison bands in the antiferromagnetic Kitaev models can be topological and may lead to a characteristic features in thermal Hall effects in Kitaev materials.
description: 8+11 pages, 10 figures. Corrected an error in the field-induced vison hopping related to large finite size effects. Modified conclusions on Chern numbers and vison Hall effect. Added discussion on how vison diffusion acts as bottleneck for equilibration
Madero, Luis, La intervención de terceiro en el proceso canónico. Ed. EUNSA. 1 vol. de 315 ps. 215x145. Pamplona 1982
Creators: name: Marques, José António
Publisher: name: Theologica
Year: 1987

description: Theologica, v. 22 n. 1-4 (1987): Volumes 22, 23 (1987-1988)
Ferrer, Urbano, Juan Pablo II y el orden social. Ed. EUNSA. 1 vol. de 624 ps., 180x110. Pamplona 1982
Creators: name: Arieiro, José
Publisher: name: Theologica
Year: 1987

description: Theologica, v. 22 n. 1-4 (1987): Volumes 22, 23 (1987-1988)
Caffarra, Carlo, Vida en Cristo. Ed. EUNSA. 1 vol. de 236 ps. 240x155. Pamplona 1988
Creators: name: Marques, José António
Publisher: name: Theologica
Year: 1987

description: Theologica, v. 22 n. 1-4 (1987): Volumes 22, 23 (1987-1988)
Growth factors in uterine fibroids
Creators: name: Vollenhoven., Beverley Janine
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Ibáñez Langlois, José Miguel, Doctrina Social de la Iglesia. Ed. EUNSA. 1 vol. de 311 ps., 210x145. Pamplona 1987
Creators: name: Marques, José António
Publisher: name: Theologica
Year: 1987

description: Theologica, v. 22 n. 1-4 (1987): Volumes 22, 23 (1987-1988)
Open Science Implementation Plan for the Biodata Resource Inventory
Creators: name: Imker, Heidi J
name: Schackart, Kenneth E.
Publisher: name: Zenodo
Year: 2022
Subjects: biodata_resource_inventory
computational reproducibility
FAIR data
open science

description: This document outlined plans to implement Open Science practices in a collaborative project. It served as a living document that was meant to help us articulate our Open Science goals as well as guide decision-making, allocation of time and resources, and the ultimate products of the project. The plan has four components: Reproducibility Standards, Code Standards, Data Standards, and External Review/Validation.
Sci-GaIA Deliverable D3.1 - Guidelines to setup and configure an appliance for the deployment of standard compliant open access repositories
Creators: name: Barbera, R
name: Ricceri, R
name: Torrisi, M
Publisher: name: Sci-GaIA Open Access Repository
Year: 2015

description: This deliverable presents the template of a standards-compliant Open Access repository, delivered by the project as a fully-functional, reproducible, proof of principle – a contextualised template of good practice which communities can refer to or even re-use directly. We also report on the current state of activities. Guidelines to install and configure a virtual appliance containing the template repositories are also mentioned.
The Iso-electronic Series $Ca_{2-x}Sr_{x}RuO_{4}$: Structural Distortion, Effective Dimensionality, Spin Fluctuations and Quantum Criticality
Creators: name: Acharya, Swagata
name: Dey, Dibyendu
name: Maitra, T
name: Taraphder, A
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The iso-electronic $d^{4}$ compounds of the $4d$ series show rich phase diagrams due to competing spin, charge and orbital degrees of freedom in presence of strong correlations and structural distortions. One such iso-electronic series, $Ca_{2-x}Sr_{x}RuO_{4}$, is studied within the GGA (and spin-orbit coupled GGA) plus DMFT formalism using the hybridization expansion of continuous time Quantum Monte Carlo solver. While the local dynamical correlations make $Sr_{2}RuO_{4}$ a Hund's metal, they drive $Ca_{2}RuO_{4}$ to a Mott insulating ground state. We study the dynamic and static single-particle and local irreducible vertex-corrected two-particle responses at three different points ($x = 2.0, 0.5, 0.0$) to understand the anomalous cross-over from Hund's metal ($x = 2.0 $) to a Mott insulator ($x = 0 $) and find that a structural distortion is likely to be responsible for the cross-over. Further, dynamical correlations reveal that the band-width ($W$) of the Hund's metal is larger than its effective local Hubbard $U$, and a finite Hund's coupling $J_{H}$ helps it remain in a bad metallic and nearly spin-frozen state over a large temperature range. $Ca_{2}RuO_{4}$, on the other hand, is intrinsically driven to the proximity of a Mott transition due to narrowing of band width ($U/W > 1.5$), though its finite temperature excitations indicate bad metallicity. We show that there is a critical end point of second-order structural transition at $x = 0.5$, where spin fluctuations become critically singular and follow the exact scaling of conformally invariant boundary field theory. The critical end point of quasi-$3D$ nature is associated with an effective dimensional cross-over between the $x = 2.0$ and $x=0.0$ quasi-$2D$ structures. Finally we draw a modified magnetic phase diagram of the material, showing a fan-like region starting from the quantum critical end point at $x = 0.5.$
description: 13 pages, 10 figures
A Viable Platform for Open Science
Creators: name: Barbera, Roberto
Publisher: name: Sci-GaIA Open Access Repository
Year: 2015

description: This presentation describes the principles of Open Science and Open Science Commons and tackles the issues of science re-producibility and re-usability. It also introduce the Sci-GaIA project and its Open Science Commons platform. The presentation has been given at the "FabLab and Makerspaces for Science" workshop held at ICTP in Trieste on 5-7 October 2015 (http://indico.ictp.it/event/a14297/overview).
Shear-induced unfolding and enzymatic cleavage of full-length VWF multimers
Creators: name: Lippok, Svenja
name: Radtke, Matthias
name: Obser, Tobias
name: Kleemeier, Lars
name: Schneppenheim, Reinhard
name: Budde, Ulrich
name: Netz, Roland R.
name: Rädler, Joachim O.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Proteolysis of the multimeric blood coagulation protein von Willebrand Factor (VWF) by ADAMTS13 is crucial for prevention of microvascular thrombosis. ADAMTS13 cleaves VWF within the mechanosensitive A2 domain, which is believed to open under shear flow. Here, we combine Fluorescence Correlation Spectroscopy (FCS) and a microfluidic shear cell to monitor real-time kinetics of full-length VWF proteolysis as a function of shear stress. For comparison, we also measure the Michaelis-Menten kinetics of ADAMTS13 cleavage of wild-type VWF in the absence of shear but partially denaturing conditions. Under shear, ADAMTS13 activity on full-length VWF arises without denaturing agent as evidenced by FCS and gel-based multimer analysis. In agreement with Brownian hydrodynamics simulations, we find a sigmoidal increase of the enzymatic rate as a function of shear at a threshold shear rate 5522/s. The same flow-rate dependence of ADAMTS13 activity we also observe in blood plasma, which is relevant to predict hemostatic dysfunction.
Alegre, Francisco Javier Sesé, Trinidao, Escritura, Historia. La Trinidad y el Espíritu Santo en la Teologia de Ruperto de Deutz. Ed. EUNSA. 1 vol. de 275 ps. 240x155. Pamplona 1988
Creators: name: Marques, José António
Publisher: name: Theologica
Year: 1987

description: Theologica, v. 22 n. 1-4 (1987): Volumes 22, 23 (1987-1988)
Castaños-Mollor, Manuel I., La secularidad en los escritores cristianos de los primeros siglos. Ed. EUNSA. 1 vol. de 202 ps. 215x145. Pamplona 1984
Creators: name: Marques, José António
Publisher: name: Theologica
Year: 1987

description: Theologica, v. 22 n. 1-4 (1987): Volumes 22, 23 (1987-1988)
Enumeration of Chord Diagrams without Loops and Parallel Chords
Creators: name: Krasko, Evgeniy
name: Omelchenko, Alexander
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A15

description: We enumerate chord diagrams without loops and without both loops and parallel chords. We show that the former ones describe Hamiltonian paths in $n$-dimensional octahedrons. The latter ones are also known as shapes. For labelled diagrams we obtain generating functions, for unlabelled ones we derive recurrence relations.
description: 20 pages, 17 figures, 2 tables