cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spin-Wave Fiber
Creators: name: Yu, Weichao
name: Lan, Jin
name: Wu, Ruqian
name: Xiao, Jiang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spin waves are collective excitations propagating in the magnetic medium with ordered magnetizations. Magnonics, utilizing the spin wave (magnon) as information carrier, is a promising candidate for low-dissipation computation and communication technologies. We discover that, due to the Dzyaloshinskii-Moriya interaction, the scattering behavior of spin wave at a magnetic domain wall follows a generalized Snell's law, where two magnetic domains work as two different mediums. Similar to optical total reflection that occurs at the water-air interfaces, spin waves may experience total reflection at magnetic domain walls when their incident angle larger than a critical value. We design a spin wave fiber using a magnetic domain structure with two domain walls, and demonstrate that such a spin wave fiber can transmit spin waves over long distance by total internal reflections, in analogy to an optical fiber. Our design of spin wave fiber opens up new possibilities in pure magnetic information processing.
description: 5 pages, 3 figures
Titelei
Creators: name: Redaktion, Die
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2023

description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 55 Nr. 1/2 (1977)
Towards Optimal Tradeoff Between Data Freshness and Update Cost in Information-update Systems
Creators: name: Liu, Zhongdong
name: Li, Bin
name: Zheng, Zizhan
name: Hou, Y. Thomas
name: Ji, Bo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we consider a discrete-time information-update system, where a service provider can proactively retrieve information from the information source to update its data and users query the data at the service provider. One example is crowdsensing-based applications. In order to keep users satisfied, the application desires to provide users with fresh data, where the freshness is measured by the Age-of-Information (AoI). However, maintaining fresh data requires the application to update its database frequently, which incurs an update cost (e.g., incentive payment). Hence, there exists a natural tradeoff between the AoI and the update cost at the service provider who needs to make update decisions. To capture this tradeoff, we formulate an optimization problem with the objective of minimizing the total cost, which is the sum of the staleness cost (which is a function of the AoI) and the update cost. Then, we provide two useful guidelines for the design of efficient update policies. Following these guidelines and assuming that the aggregated request arrival process is Bernoulli, we prove that there exists a threshold-based policy that is optimal among all online policies and thus focus on the class of threshold-based policies. Furthermore, we derive the closed-form formula for computing the long-term average cost under any threshold-based policy and obtain the optimal threshold. Finally, we perform extensive simulations using both synthetic data and real traces to verify our theoretical results and demonstrate the superior performance of the optimal threshold-based policy compared with several baseline policies.
description: Accepted by IEEE Internet of Things Journal
Zitierleitfaden
Creators: name: Butz, Andreas
name: Di Giusto, Flavio
name: Philipp, Jeannette
name: Scherler, Patrik
name: Woschnack, Ute
name: Adams-Hausheer, Danielle
name: Christian, John
name: Fawcett, Michelle
name: Fengler, Reinhild
Publisher: name: ZHAW Zürcher Hochschule für Angewandte Wissenschaften
Year: 2021
Subjects: 808: Rhetorik und Schreiben

description: Die englische Version des Zitierleitfadens ist verfügbar unter https://doi.org/10.21256/zhaw-28783.
Widmung
Creators: name: Redaktion, Die
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2023

description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 55 Nr. 1/2 (1977)
Repetition after-effects of response inhibition : evidence for episodic memory retrieval
Creators: name: Upton., Daniel John
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.
Visco-elastic effects in strongly coupled dusty plasmas
Creators: name: Bandyopadhyay, P.
name: Prasad, G.
name: Sen, A.
name: Kaw, P. K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We report on experimental evidence of visco-elastic effects in a strongly coupled dusty plasma through investigations of the propagation characteristics of low frequency dust acoustic waves and by excitations of transverse shear waves in a DC discharge Argon plasma.
description: Two pages with one figure
Topology Analysis of the XRP Ledger
Creators: name: Tumas, Vytautas
name: Rivera, Sean
name: Magoni, Damien
name: State, Radu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: XRP Ledger is one of the oldest, well-established blockchains. Despite the popularity of the XRP Ledger, little is known about its underlying peer-to-peer network. The structural properties of a network impact its efficiency, security and robustness. We aim to close the knowledge gap by providing a detailed analysis of the XRP overlay network. In this paper we examine the graph-theoretic properties of the XRP Ledger peer-to-peer network and its temporal characteristics. We crawl the XRP Ledger over two months and collect 1,290 unique network snapshots. We uncover a small group of nodes that act as a networking backbone. In addition, we observe a high network churn, with a third of the nodes changing every five days. Our findings have strong implications for the resilience and safety of the XRP Ledger.
description: Extended edition, 8 pages. In The 38th ACM/SIGAPP Symposium on Applied Computing, March 27 - March 31, 2023, Tallinn, Estonia
Radio and Gamma-ray Properties of Extragalactic Jets from the TANAMI Sample
Creators: name: Böck, M.
name: Kadler, M.
name: Müller, C.
name: Tosti, G.
name: Ojha, R.
name: Wilms, J.
name: Bastieri, D.
name: Burnett, T.
name: Carpenter, B.
name: Cavazzuti, E.
name: Dutka, M.
name: Blanchard, J.
name: Edwards, P. G.
name: Hase, H.
name: Horiuchi, S.
name: Jauncey, D. L.
name: Krauss, F.
name: Lister, M. L.
name: Lovell, J. E. J.
name: Lott, B.
name: Murphy, D. W.
name: Phillips, C.
name: Plötz, C.
name: Pursimo, T.
name: Quick, J.
name: Ros, E.
name: Taylor, G.
name: Thompson, D. J.
name: Tingay, S. J.
name: Tzioumis, A.
name: Zensus, J. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using high-resolution radio imaging with VLBI techniques, the TANAMI program has been observing the parsec-scale radio jets of southern (declination south of -30°) gamma-ray bright AGN simultaneously with Fermi/LAT monitoring of their gamma-ray emission. We present the radio and gamma-ray properties of the TANAMI sources based on one year of contemporaneous TANAMI and Fermi/LAT data. A large fraction (72%) of the TANAMI sample can be associated with bright gamma-ray sources for this time range. Association rates differ for different optical classes with all BL Lacs, 76% of quasars and just 17% of galaxies detected by the LAT. Upper limits were established on the gamma-ray flux from TANAMI sources not detected by LAT. This analysis led to the identification of three new Fermi sources whose detection was later confirmed. The gamma-ray and radio luminosities are related by $L_γ\propto L_r^{0.89+-0.04}$. The brightness temperatures of the radio cores increase with the average gamma-ray luminosity, and the presence of brightness temperatures above the inverse Compton limit implies strong Doppler boosting in those sources. The undetected sources have lower gamma/radio luminosity ratios and lower contemporaneous brightness temperatures. Unless the Fermi/LAT-undetected blazars are strongly gamma-ray-fainter than the Fermi/LAT-detected ones, their gamma-ray luminosity should not be significantly lower than the upper limits calculated here.
description: 12 pages, 11 figures, 3 tables, Accepted for publication in Astronomy & Astrophysics
Cavity-induced Non-Adiabatic Dynamics and Spectroscopy of Molecular Rovibrational Polaritons studied by Multi-Mode Quantum Models
Creators: name: Fischer, Eric W.
name: Saalfrank, Peter
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study theoretically the quantum dynamics and spectroscopy of rovibrational polaritons formed in a model system composed of a single rovibrating diatomic molecule, which interacts with two degenerate, orthogonally polarized modes of an optical Fabry-Pérot cavity. We employ an effective rovibrational Pauli-Fierz Hamiltonian in length gauge representation and identify three-state vibro-polaritonic conical intersections (VPCIs) between singly-excited vibro-polaritonic states in a two-dimensional angular coordinate branching space. The lower and upper vibrational polaritons are of mixed light-matter hybrid character, whereas the intermediate state is purely photonic in nature. The VPCIs provide effective population transfer channels between singly-excited vibrational polaritons, which manifest in rich interference patterns in rotational densities. Spectroscopically, three bright singly-excited states are identified, when an external infrared laser field couples to both a molecular and a cavity mode. The non-trivial VPCI topology manifests as pronounced multi-peak progression in the spectral region of the upper vibrational polariton, which is traced back to the emergence of rovibro-polaritonic light-matter hybrid states. Experimentally ubiquitous spontaneous emission from cavity modes induces a dissipative reduction of intensity and peak broadening, which mainly influences the purely photonic intermediate state peak as well as the rovibro-polaritonic progression.
description: 14 pages, 7 figures; accepted at Journal of Chemical Physics
Understanding the Effects of Primary and Secondary Doping via Post‐Treatment of P‐Type and N‐Type Hybrid Organic–Inorganic Thin Film Thermoelectric Materials
Creators: name: Rubio, Rodrigo
name: Félix, Roberto
name: Wilks, Regan
name: Bär, Marcus
name: Mazzio, Katherine
Publisher: name: Humboldt-Universität zu Berlin
Year: 2023
Subjects: subject: hybrid materials
subject: PEDOT:PSS
subject: post‐treatment
subject: silver telluride
subject: tellurium
subject: thin film thermoelectric
subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten

description: Hybrid organic/inorganic materials have emerged as promising thermoelectric (TE) materials since they inherit the individual strengths of each component, enabling rational materials design with enhanced TE performance. The doping of hybrid TE materials via post-treatment processes is used to improve their performance, but there is still an incomplete understanding of the elicited effects. Here, the impact of different doping methods on the thin film TE performance of p-type Te/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and n-type Ag2Te/PEDOT:PSS hybrid materials is investigated. Primary doping through acid–base and charge transfer processes using H2SO4 and tetrakis(dimethylamino)ethylene, respectively, and the effects of secondary doping using ethylene glycol is examined. Through a combination of Hall effect measurements, hard X-ray photoelectron spectroscopy, and Raman spectroscopy, variations in the charge carrier concentration, mobility, and overall TE performance are related to the morphological and chemical structure of the hybrid materials. This study provides an improved understanding of the effects that different post-treatments have on hybrid materials and shows that the impact of these post-treatments on pure PEDOT:PSS does not always apply to hybrid systems. These new insights into post-treatment effects on hybrid materials is expected to facilitate further enhancement of their performance as electronic materials in general and thermoelectric materials in particular.
A Federated Platform for Open Science Commons in Africa
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 "Federated Identity and Mobility for Research and Education" workshop held in Lagos (Nigeria) on the 7th of October 2015 (https://indico.wacren.net/event/11/).
Deterministic Local Expansion of W States
Creators: name: Yesilyurt, Can
name: Bugu, Sinan
name: Ozaydin, Fatih
name: Altintas, Azmi Ali
name: Tame, Mark
name: Yang, Lan
name: Ozdemir, Sahin Kaya
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In large quantum systems multipartite entanglement can be found in many inequivalent classes under local operations and classical communication. Preparing states of arbitrary size in different classes is important for performing a wide range of quantum protocols. W states, in particular, constitute a class with a variety of quantum networking protocols. However, all known schemes for preparing W states are probabilistic, with resource requirements increasing at least sub-exponentially. We propose a deterministic scheme for preparing W states that requires no prior entanglement and can be performed locally. We introduce an all-optical setup that can efficiently prepare W states of arbitrary size. Our scheme advances the use of W states in real-world quantum networks and could be extended to other physical systems.
description: 8 pages, 4 color figures
Analysis of the Visually Detectable Wear Progress on Ball Screws
Creators: name: Schlagenhauf, Tobias
name: Scheurenbrand, Tim
name: Hofmann, Dennis
name: Krasnikow, Oleg
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 70B99

description: The actual progression of pitting on ball screw drive spindles is not well known since previous studies have only relied on the investigation of indirect wear effects (e. g. temperature, motor current, structure-borne noise). Using images from a camera system for ball screw drives, this paper elaborates on the visual analysis of pitting itself. Due to its direct, condition-based assessment of the wear state, an image-based approach offers several advantages, such as: Good interpretability, low influence of environmental conditions, and high spatial resolution. The study presented in this paper is based on a dataset containing the entire wear progression from original condition to component failure of ten ball screw drive spindles. The dataset is being analyzed regarding the following parameters: Axial length, tangential length, and surface area of each pit, the total number of pits, and the time of initial visual appearance of each pit. The results provide evidence that wear development can be quantified based on visual wear characteristics. In addition, using the dedicated camera system, the actual course of the growth curve of individual pits can be captured during machine operation. Using the findings of the analysis, the authors propose a formula for standards-based wear quantification based on geometric wear characteristics.
Computing Simulations for Large Scale Experiments: the Case of Muons
Creators: name: Liborio, Leandro
name: Austin, Patrick
name: Beltran, Alejandra Gonzalez
name: Davies, Joel
Publisher: name: Zenodo
Year: 2023

description: Presentation to the Catalysis Hub at Harwell, UK. (https://ukcatalysishub.co.uk/) by Leandro Liborio. Brief description of the infrastructure for muons at RAL and explaination of what muons are and how they are generated. Presented an application of muon experiments and simulations to catalysis. Specifically, the catalytic reduction of hydrogen. Presented the Galaxy platform and muongalaxy, which is a web-based platform that can be used as a GUI and workflow manager for the software tools developed by the Muon Spectroscopy Computational Project.
SVKCorp: Corpus of Debates in the National Council of the Slovak Republic
Creators: name: Mochtak, Michal
Publisher: name: Zenodo
Year: 2022
Subjects: corpus, parliamentary debates, parliament, Slovakia, Slovak Republic

description: This is a repository for the corpus of transcripts of parliamentary debates in the National Council of the Slovak Republic (https://www.nrsr.sk/web/). Transcripts of speeches were text-mined and cleaned from machine-readable word documents and the official online database of the Parliament. The corpus covers the period of 1994-2020 and counts seven complete terms with 375 024 speeches. The repository contains two types of data files. The corpus is stored on per term basis in .RDS files with the following taxonomy – SK_term_*.RDS. For further information on data structure, see the accompanying codebook. Apart from the main corpus, the repository also contains annotated speeches in the full CoNNL-U format (see SK_speeches_anno_*.RDS). The annotation was done using Trankit analytical pipeline with the default Slovak language model. If you use the dataset, please cite it with the meta link for the whole repository: Mochtak, Michal (2022): SVKCorp: Corpus of Debates in the National Council of the Slovak Republic, v1 (1994-2020), https://doi.org/10.5281/zenodo.7020474. Changelog:
 1.0.0 (24/08/2022; latest version)
 — Original upload
description: This is a "work in progress" project. Please notify the author if you notice any systematic issues with the corpus. The 375k entries in the corpus were not checked manually.
Topological origin of universal few-body clusters in Efimov physics
Creators: name: Horinouchi, Yusuke
name: Ueda, Masahito
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Efimov physics is renowned for the self-similar spectrum featuring the universal ratio of one eigenenergy to its neighbor. Even more esoteric is the numerically unveiled fact that every Efimov trimer is accompanied by a pair of tetramers. Here we demonstrate that this hierarchy of universal few-body clusters has a topological origin by identifying the numbers of universal 3- and 4-body bound states with the winding numbers of the renormalization-group limit cycle in theory space. The finding suggests a topological phase transition in mass-imbalanced few-body systems which should be tested experimentally.
A correlation structure for the analysis of Gaussian and non-Gaussian responses in crossover experimental designs with repeated measures
Creators: name: Cruz, N. A.
name: Melo, O. O.
name: Martinez, C. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: In this study, we propose a family of correlation structures for crossover designs with repeated measures for both, Gaussian and non-Gaussian responses using generalized estimating equations (GEE). The structure considers two matrices: one that models between-period correlation and another one that models within-period correlation. The overall correlation matrix, which is used to build the GEE, corresponds to the Kronecker between these matrices. A procedure to estimate the parameters of the correlation matrix is proposed, its statistical properties are studied and a comparison with standard models using a single correlation matrix is carried out. A simulation study showed a superior performance of the proposed structure in terms of the quasi-likelihood criterion, efficiency, and the capacity to explain complex correlation phenomena/patterns in longitudinal data from crossover designs
description: 29 pages, 5 tables, 5 figures. Stat Papers (2023)
Analysis of reprogramming by cell fusion
Creators: name: Upton., Kyle R.
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.
SVKCorp: Corpus of Debates in the National Council of the Slovak Republic
Creators: name: Mochtak, Michal
Publisher: name: Zenodo
Year: 2022
Subjects: corpus, parliamentary debates, parliament, Slovakia, Slovak Republic

description: This is a repository for the corpus of transcripts of parliamentary debates in the National Council of the Slovak Republic (https://www.nrsr.sk/web/). Transcripts of speeches were text-mined and cleaned from machine-readable word documents and the official online database of the Parliament. The corpus covers the period of 1994-2020 and counts seven complete terms with 375 024 speeches. The repository contains two types of data files. The corpus is stored on per term basis in .RDS files with the following taxonomy – SK_term_*.RDS. For further information on data structure, see the accompanying codebook. Apart from the main corpus, the repository also contains annotated speeches in the full CoNNL-U format (see SK_speeches_anno_*.RDS). The annotation was done using Trankit analytical pipeline with the default Slovak language model.
description: This is a "work in progress" project. Please notify the author if you notice any systematic issues with the corpus. The 375k entries in the corpus were not checked manually.
The Dakar Declaration on Open Science in Africa
Creators: name: Consortium, The Sci-GaIA
Publisher: name: Sci-GaIA Open Access Repository
Year: 2016

description: The Dakar Declaration on Open Science in Africa has been signed by the participants to the Sci-GaIA Workshop on “Promoting Open Science in Africa”, to the 2nd TANDEM Workshop and to the WACREN Conference 2016. The Declaration can also be signed online by everybody sharing it at http://www.sci-gaia.eu/dakar-declaration/.
Irrelevance of Bell's Theorem for experiments involving correlations in space and time: a specific loophole-free computer-example
Creators: name: De Raedt, Hans
name: Michielsen, Kristel
name: Hess, Karl
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Physics (physics.gen-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: John Bell is generally credited to have accomplished the remarkable "proof" that any theory of physics, which is both Einstein-local and "realistic" (counterfactually definite), results in a strong upper bound to the correlations that are measured in space and time. He thus predicts that Einstein-Podolsky-Rosen experiments cannot violate Bell- type inequalities. We present a counterexample to this claim, based on discrete-event computer simulations. Our model-results fully agree with the predictions of quantum theory for Einstein-Podolsky-Rosen-Bohm experiments and are free of the detection- or a coincidence-loophole.
Level-based Blocking for Sparse Matrices: Sparse Matrix-Power-Vector Multiplication
Creators: name: Alappat, Christie L.
name: Hager, Georg
name: Schenk, Olaf
name: Wellein, Gerhard
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Performance (cs.PF)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: The multiplication of a sparse matrix with a dense vector (SpMV) is a key component in many numerical schemes and its performance is known to be severely limited by main memory access. Several numerical schemes require the multiplication of a sparse matrix polynomial with a dense vector, which is typically implemented as a sequence of SpMVs. This results in low performance and ignores the potential to increase the arithmetic intensity by reusing the matrix data from cache. In this work we use the recursive algebraic coloring engine (RACE) to enable blocking of sparse matrix data across the polynomial computations. In the graph representing the sparse matrix we form levels using a breadth-first search. Locality relations of these levels are then used to improve spatial and temporal locality when accessing the matrix data and to implement an efficient multithreaded parallelization. Our approach is independent of the matrix structure and avoids shortcomings of existing "blocking" strategies in terms of hardware efficiency and parallelization overhead. We quantify the quality of our implementation using performance modelling and demonstrate speedups of up to 3$\times$ and 5$\times$ compared to an optimal SpMV-based baseline on a single multicore chip of recent Intel and AMD architectures. As a potential application, we demonstrate the benefit of our implementation for a Chebyshev time propagation scheme, representing the class of polynomial approximations to exponential integrators. Further numerical schemes which may benefit from our developments include $s$-step Krylov solvers and power clustering algorithms.
description: 18 pages, 19 figures, 3 tables
Glucagon Receptor Signaling at White Adipose Tissue Does Not Regulate Lipolysis; AJP Endo August 2022; Supplemental figures
Creators: name: Stern, Jennifer
Publisher: name: figshare
Year: 2022
Subjects: subject: 60603 Animal Physiology - Systems
subject: FOS: Biological sciences

description: Supplemental Data for AJP Endocrinology and Metabolism Article "Glucagon Receptor Signaling at White Adipose Tissue Does Not Regulate Lipolysis," August, 2022
Perron communicability and sensitivity of multilayer networks
Creators: name: El-Halouy, Smahane
name: Noschese, Silvia
name: Reichel, Lothar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 05C50, 15A18, 65F15

description: Modeling complex systems that consist of different types of objects leads to multilayer networks, where nodes in the different layers represent different kind of objects. Nodes are connected by edges, which have positive weights. A multilayer network is associated with a supra-adjacency matrix. This paper investigates the sensitivity of the communicability in a multilayer network to perturbations of the network by studying the sensitivity of the Perron root of the supra-adjacency matrix. Our analysis sheds light on which edge weights to make larger to increase the communicability of the network, and which edge weights can be made smaller or set to zero without affecting the communicability significantly.
description: 20 pages, 1 figure, 7 tables
Kinematics of an Ideal Fluid into a Spatially Flat Anisotropic Axisymmetric Universe
Creators: name: López, Ericsson
name: Llerena, Mario
name: Aldás, Franklin
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Physics (physics.gen-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Standard Cosmological Model assumes that the Universe is, on average, homogeneous and isotropic for large scales (z>1), but this principle has been questioned from the results about Cosmic Microwave Background. This radiation has anomalies that are not explained from the Standard Model, such as temperature fluctuations in the order of 10-5K or aligning polar moments. These anomalies could be explained by anisotropic cosmological models. We propose a transformation to spherical coordinates considering different temporal scale factors in the Cartesian axes, from which a reducible to flat spatial Friedmann-Lemaitre-Robertson-Walker metric is obtained. In the model, we consider the axisymmetric case and analyze the cinematic behavior of an ideal fluid at rest.
description: in Spanish
The Role of Idle Waves, Desynchronization, and Bottleneck Evasion in the Performance of Parallel Programs
Creators: name: Afzal, Ayesha
name: Hager, Georg
name: Wellein, Gerhard
Publisher: name: arXiv
Year: 2022
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: The performance of highly parallel applications on distributed-memory systems is influenced by many factors. Analytic performance modeling techniques aim to provide insight into performance limitations and are often the starting point of optimization efforts. However, coupling analytic models across the system hierarchy (socket, node, network) fails to encompass the intricate interplay between the program code and the hardware, especially when execution and communication bottlenecks are involved. In this paper we investigate the effect of "bottleneck evasion" and how it can lead to automatic overlap of communication overhead with computation. Bottleneck evasion leads to a gradual loss of the initial bulk-synchronous behavior of a parallel code so that its processes become desynchronized. This occurs most prominently in memory-bound programs, which is why we choose memory-bound benchmark and application codes, specifically an MPI-augmented STREAM Triad, sparse matrix-vector multiplication, and a collective-avoiding Chebyshev filter diagonalization code to demonstrate the consequences of desynchronization on two different supercomputing platforms. We investigate the role of idle waves as possible triggers for desynchronization and show the impact of automatic asynchronous communication for a spectrum of code properties and parameters, such as saturation point, matrix structures, domain decomposition, and communication concurrency. Our findings reveal how eliminating synchronization points (such as collective communication or barriers) precipitates performance improvements that go beyond what can be expected by simply subtracting the overhead of the collective from the overall runtime.
description: 13 pages, 7 figures, 6 tables
$SU(5)$ grand unification and $W$-boson mass
Creators: name: Senjanović, Goran
name: Zantedeschi, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A realistic extension of the minimal $SU(5)$ theory consisting of the addition of an adjoint fermion is known to predict light real fermion and scalar weak triplets, potentially accessible at the LHC. These particles, in addition to playing a key role in gauge coupling unification, have profound phenomenological implications. The fermion triplet, that through the seesaw mechanism offers a testable origin of neutrino mass, has been already extensively discussed. The scalar triplet develops a vacuum expectation value that modifies the $W$-boson mass. We show that its low-energy effective theory is remarkably predictive: in the leading approximation, all the relevant physical processes involving the scalar triplet depend only on its mass and the deviation from the Standard Model $W$-mass value.
description: 7 pages, 3 figures, v3: Published version
Microfluidic cell engineering on high-density microelectrode arrays for assessing structure-function relationships in living neuronal networks
Creators: name: Sato, Yuya
name: Yamamoto, Hideaki
name: Kato, Hideyuki
name: Tanii, Takashi
name: Sato, Shigeo
name: Hirano-Iwata, Ayumi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Neuronal networks in dissociated culture combined with cell engineering technology offer a pivotal platform to constructively explore the relationship between structure and function in living neuronal networks. Here, we fabricated defined neuronal networks possessing a modular architecture on high-density microelectrode arrays (HD-MEAs), a state-of-the-art electrophysiological tool for recording neural activity with high spatial and temporal resolutions. We first established a surface coating protocol using a cell-permissive hydrogel to stably attach polydimethylsiloxane microfluidic film on the HD-MEA. We then recorded the spontaneous neural activity of the engineered neuronal network, which revealed an important portrait of the engineered neuronal network--modular architecture enhances functional complexity by reducing the excessive neural correlation between spatially segregated modules. The results of this study highlight the impact of HD-MEA recordings combined with cell engineering technologies as a novel tool in neuroscience to constructively assess the structure-function relationships in neuronal networks.
description: 18 pages, 5 figures
Vasileva et al_AJP Endo 2022_ supplemental figures
Creators: name: Stern, Jennifer
Publisher: name: figshare
Year: 2022
Subjects: subject: 60603 Animal Physiology - Systems
subject: FOS: Biological sciences

description: Supplemental Data for manuscript entitled "Glucagon Receptor Signaling at White Adipose Tissue Does Not Regulate Lipolysis"
Link community detection through global optimization and the inverse resolution limit of partition density
Creators: name: Lee, Juyong
name: Zhang, Zhong-Yuan
name: Lee, Jooyoung
name: Brooks, Bernard R.
name: Ahn, Yong-Yeol
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We investigate the possibility of global optimization-based overlapping community detection, using link community framework. We first show that partition density, the original quality function used in link community detection method, is not suitable as a quality function for global optimization because it prefers breaking communities into triangles except in highly limited conditions. We analytically derive those conditions and confirm it with computational results on direct optimization of various synthetic and real-world networks. To overcome this limitation, we propose alternative approaches combining the weighted line graph transformation and existing quality functions for node-based communities. We suggest a new line graph weighting scheme, a normalized Jaccard index. Computational results show that community detection using the weighted line graphs generated with the normalized Jaccard index leads to a more accurate community structure.
description: 20 pages, 8 figures
Introductory lectures on lattice QCD at nonzero baryon number
Creators: name: Aarts, Gert
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: These lecture notes contain an elementary introduction to lattice QCD at nonzero chemical potential. Topics discussed include chemical potential in the continuum and on the lattice; the sign, overlap and Silver Blaze problems; the phase boundary at small chemical potential; imaginary chemical potential; and complex Langevin dynamics. An incomplete overview of other approaches is presented as well. These lectures are meant for postgraduate students and postdocs with an interest in extreme QCD. A basic knowledge of lattice QCD is assumed but not essential. Some exercises are included at the end.
description: 45 pages, based on lectures delivered at the XIII International Workshop on Hadron Physics, Brazil, March 2015
Protocolo da revisão sistemática rápida sobre efetividade dos cuidados de transição de idosos após alta hospitalar
Creators: name: Denila Bueno Silva
name: Laís Komatsu De Paiva
name: Uchimura, Liza Yurie Teruya
name: Figueiro, Mabel Fernandes
name: Chrispim, Pedro Paulo
name: Yonekura, Tatiana
Publisher: name: Zenodo
Year: 2022
Subjects: Aged, Transitional Care, Patient Discharge, Continuity of Patient Care

description: Objetivo: identificar efetividade dos cuidados de transição de idosos após alta hospitalar. Metodologia: será realizada uma revisão rápida seguindo as recomendações do Cochrane Rapid Reviews Methods Group. A busca dos estudos será realizada nas seguintes bases de dados eletrônicas: PubMed, Embase, Cochrane library e BVS. As etapas de triagem pelo título e resumo e leitura do texto integral dos estudos, serão realizadas por dupla de revisores de forma independente e cega. No caso de divergências na seleção dos estudos, estas serão resolvidas por um terceiro revisor. Resultados esperados: espera-se encontrar evidências com resultados que mostrem a efetividade dos cuidados de transição de idosos após alta hospitalar, como mortalidade, reinternação hospitalar e qualidade de vida dos idosos.
Observations of solar flares with IRIS and SDO
Creators: name: Li, D.
name: Innes, D. E.
name: Ning, Z. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: Flare kernels brighten simultaneously in all SDO/AIA channels making it difficult to determine their temperature structure. IRIS is able to spectrally resolve Fe xxi emission from cold chromospheric brightenings, so can be used to infer the amount of Fe xxi emission in 131 channel. Aims: We use observations of two small solar flares seen by IRIS and SDO to compare the EMs deduced from the IRIS Fe xxi line and the AIA 131 channel to determine the fraction of Fe xxi emission in flare kernels in the 131 channel of AIA. Methods: Cotemporal and cospatial pseudo-raster AIA images are compared with the IRIS results.We use multi-Gaussian line fitting to separate the blending chromospheric emission so as to derive Fe xxi intensities and Doppler shifts in IRIS spectra. Results: We define loop and kernel regions based on the brightness of the 131 and 1600 Å intensities. In the loop regions the Fe xxi EMs are typically 80% of the 131 ones, and range from 67% to 92%. Much of the scatter is due to small misalignments but the largest site with low Fe xxi contributions was probably affected by a recent injection of cool plasma into the loop. In flare kernels the contribution of Fe xxi increases from less than 10% at the low intensity 131 sites to 40-80% in the brighter kernels. Here the Fe xxi is superimposed on bright chromospheric emission and the Fe xxi line shows blue shifts, sometimes extending up to the edge of the spectral window, 200 km/s. Conclusions: The AIA 131 emission in flare loops is due to Fe xxi emission with a 10-20% contribution from continuum, Fe xxiii, and cooler background plasma emission. In bright flare kernels up to 52% of the 131 is from cooler plasma. The wide range seen in the kernels is caused by significant structure in the kernels which is seen as sharp gradients in Fe xxi EM at sites of molecular and transition region emission.
description: 10 pages, 19 figures and 1 table, accepted by A&A
Autoimmunoreactive lymphocyte clones in the mouse
Creators: name: Underwood., John Robert
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.
Continuous monitoring for noisy intermediate-scale quantum processors
Creators: name: Zolotarev, Y. F.
name: Luchnikov, I. A.
name: López-Saldívar, J. A.
name: Fedorov, A. K.
name: Kiktenko, E. O.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a continuous monitoring system for intermediate-scale quantum processors that allows extracting estimates of noisy native gate and read-out measurements based on the set of executed quantum circuits and resulting measurement outcomes. In contrast to standard approaches for calibration and benchmarking quantum processors, the executed circuits, which are input to the monitoring system, are assumed to be out of any control. We provide the results of applying our system to the synthetically generated data obtained from a quantum emulator, as well as to the experimental data collected from a publicly accessible cloud-based quantum processor. In the both cases, we demonstrate that the developed approach provides valuable results about inherent noises of emulators/processors. Considering that our approach uses only already accessible data from implemented circuits without the need to run additional algorithms, the monitoring system can complement existing approaches. We expect that our monitoring system can become a useful tool for various quantum computers in the near-term horizon, including publicly accessible cloud-based platforms, and reduce resources that are required for their benchmarking and calibration.
description: 14 pages, 11 figures, 3 tables
D8.1.2 Environmental Life Cycle Assessment of ASTEP System - Report
Creators: name: Gobio-Thomas, Lisa
name: Stojceska, Valentina
Publisher: name: Zenodo
Year: 2023

description: This report covers the second phase of the D8.1 that focuses on the assessment of the environmental impacts of the ASTEP system throughout its life cycle. It includes the life cycle assessment (LCA) methodology, goal and scope and the system boundaries used in the environmental assessment of the ASTEP system. The life cycle inventory (LCI) tables containing the materials and transportation data for each sub-system (Sundial, Thermal Energy Storage & Controls) for developing ASTEP systems for Mandrekas (MAND) and ArcelorMittal (AMTP) are presented. The environmental impact results of the LCA of the ASTEP systems for MAND & AMTP are discussed. The future prospective GHG emission reduction savings of ASTEP system when applied in a large capacity to MAND & AMTP are considered. SimaPro 9.2 software was used to conduct the environmental life cycle assessment of the ASTEP system. The ASTEP system comprises of three main components; the Sundial, thermal energy storage (TES) and the Controls. Therefore, the materials and transportation data of these three main components were placed into SimaPro software and Eco-indicator99 and Recipe were used to assess the environmental impact of the ASTEP system.
 The LCA results showed that the manufacturing phase generated the highest environmental impact, followed by the transportation phase and then the waste disposal of the components at their end of life stage of the ASTEP system. The manufacturing of the thermal energy storage (TES) produced the greatest environmental impact which was due to the large amount of aluminium, thermal oil and steel used for the shell-side inserts, therminol 59 and the thermal storage tanks, respectively. Likewise, the substantial amount of aluminium, steel and glass used in the manufacturing of the receivers, rotating platform and mirrors contributed the most to the environmental impact of the Sundials. The manufacturing of the components for the control system generated the least environmental impact. The ASTEP system provides higher green-house gas (GHG) emissions reduction savings when applied to MAND & AMTP in a larger capacity. The ASTEP system currently provides 27.2 MWh and 27.4MWh of thermal energy to AMTP and MAND’s processes, respectively. However, when the capacity of the ASTEP system is increased to 609 MWh for AMTP and 719 MWh for MAND to provide 20% of the end-user’s energy demand. This results in an annual CO2 emissions reduction of 186 tonnes and 606 tonnes for AMTP and MAND, respectively by the ASTEP system. This demonstrates the potential of the ASTEP system to provide significant GHG emission reduction savings when applied to industrial processes in greater capacities.
Interplay of finite-energy and finite-momentum superconducting pairing
Creators: name: Chakraborty, Debmalya
name: Black-Schaffer, Annica M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Understanding the nature of Cooper pairs is essential to describe the properties of superconductors. The original proposal of Bardeen, Cooper, and Schrieffer (BCS) was based on electrons pairing with same energy and zero center-of-mass momentum. With the advent of new superconductors, different forms of pairing have been discussed. In particular, Cooper pairs with finite center-of-mass momentum have received large interest. Along with such finite-momentum pairs, pairing of electrons at different energies is also central to understanding some superconductors. Here, we investigate the interplay of finite-momentum and finite-energy Cooper pairs considering two different systems: a conventional $s$-wave superconductor under applied magnetic field and a $d$-wave finite-momentum pairing state in the absence of magnetic field relevant to correlated superconductors. Investigating both these systems, we find finite-energy pairs persisting independently of finite-momentum pairing, and that they lead to odd-frequency superconducting correlations. We contrast this finding by showing that the even-frequency correlations are predominantly driven by zero-energy pairs for most frequencies. We further calculate the Meissner effect and find that odd-frequency correlations are essential for correctly describing the Meissner effect.
Origin of Quantum Criticality in Yb-Al-Au Approximant Crystal and Quasicrystal
Creators: name: Watanabe, Shinji
name: Miyake, Kazumasa
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: To get insight into the mechanism of emergence of unconventional quantum criticality observed in quasicrystal Yb$_{15}$Al$_{34}$Au$_{51}$, the approximant crystal Yb$_{14}$Al$_{35}$Au$_{51}$ is analyzed theoretically. By constructing a minimal model for the approximant crystal, the heavy quasiparticle band is shown to emerge near the Fermi level because of strong correlation of 4f electrons at Yb. We find that charge-transfer mode between 4f electron at Yb on the 3rd shell and 3p electron at Al on the 4th shell in Tsai-type cluster is considerably enhanced with almost flat momentum dependence. The mode-coupling theory shows that magnetic as well as valence susceptibility exhibits $χ\sim T^{-0.5}$ for zero-field limit and is expressed as a single scaling function of the ratio of temperature to magnetic field $T/B$ over four decades even in the approximant crystal when some condition is satisfied by varying parameters, e.g., by applying pressure. The key origin is clarified to be due to the strong locality of the critical Yb-valence fluctuation and small Brillouin zone reflecting the large unit cell, giving rise to the extremely-small characteristic energy scale. This also gives a natural explanation for the quantum criticality in the quasicrystal corresponding to the infinite limit of the unit-cell size.
description: 5 pages, 4 figures