bluuebunny/crossref_metadata_2025_split huggingface dataset:
An optimized data fusion strategy for structural damage assessment using electromechanical impedance
Authors: Singh Shishir K , Sikdar Shirsendu , Malinowski Pawel H 
Published: January 2021

Abstract
This paper proposes a new sensor network optimized data fusion approach for structural health monitoring of metallic structures using electromechanical impedance (EMI) signals. The integrated approach used to fuse common healthy state baseline model based damage detection, quantification and classification in EMI technique. Towards this, the principal component analysis (PCA) is carried out and corresponding the root mean square deviation (RMSD) index is calculated to study the information of piezoelectric transducer’s impedance (|Z|), admittance (|Y|), resistance (R), and conductance (G) in the frequency domain. A new optimized data fusion approach is proposed which was realized at the sensor level using the PCA as well as at the variable level using self-organizing maps (SOMs). The SOM comparative studies are performed using the Q-statistics (Q index) and the Hotelling’s T2 statistic (T index). The proposed methodology is tested and validated for an aluminum plate with multiple drilled holes with variable size and locations. In the process, a centralized data-fused baseline eigenvector is prepared from a healthy structure and the damage responses are projected on this baseline model. The statistical, data-driven damage matrices are calculated and compared with the RMSD index and used in a fusion based data classification using SOM. The proposed method shows robust damage sensitivity for hole locations and hole enlargement irrespective of the wide frequency range selection, and the selected frequency range contains the resonant frequency range.
Improved electroadhesive force by using fumed alumina/PDMS composites
Authors: Lim Hanwhuy , Hwang Geonwoo , Kyung Ki-Uk , Kim Baek-Jin 
Published: January 2021

Abstract
This work interrogates polymer-nanoparticle (NP) composites in electroadhesive (EA) devices to establish relationships among EA force generation and various parameters such as applied voltage, distance, gap between electrodes, dielectric constant, and the surface roughness. High permittivity is especially key for enhancing EA force thus it was modified by inorganic NP-elastomer composite. Fumed SiO2 or Al2O3 NPs were selected as the dielectric material for their homogeneity and permittivity. The NPs were mixed at 1–10 wt% in a polymer resin by using a planetary mixer and subsequently three-roll mill. The distributions of NPs in the composite were established by scanning electron microscopy, energy dispersive x-ray spectroscopy, thermogravimetric analysis, and viscosity measurements. Composites with 10 wt% of Al2O3 showed improvements in mechanical strengths from 1.5 to 2.7 MPa and dielectric constants from 3.4 to 3.6 versus pristine poly(dimethylsiloxane) (PDMS). Flexible EA devices were fabricated by stacking interdigitated electrode patterns and composite films onto a PET substrate, subsequently. An EA device that integrated an Al2O3/PDMS composite with a 10 wt% Al2O3 content achieved force generation as high as 612 mN cm−2, which is two times higher than the pristine PDMS-coated gripper.
Scalable superconductive magnetic bearing based on non-closed CC tapes windings
Authors: Osipov M , Anishenko I , Starikovskii A , Abin D , Pokrovskii S , Podlivaev A , Rudnev I 
Published: January 2021

Abstract
A new type of scalable high-temperature superconducting magnetic bearing is proposed. The bearing is based on the multilayer open windings made of coated conductor-tapes (CC-tapes). To demonstrate the possibility of manufacturing such a bearing construction we have built a working prototype and studied its characteristics. The manufactured model of bearing includes a stator, consisting of three multilayer rings (CC-tapes pancake coils) of 12 mm CC-tape and a composite rotor consisting of three rings of permanent magnets, each composed of 16 NdFeB 10 × 10 mm permanent magnets. We showed a contactless levitation of rotor relative to stator, as well as rotation of rotor and we measured load curves, namely the dependence of the rotor displacement on restoring force for axial and radial loads. Numerical simulation of bearing load characteristics has been carried out by the finite element method in the Comsol Multiphysics software. The calculation results are in a good agreement with the experimental data.
Superconducting MoN thin films prepared by DC reactive magnetron sputtering for nanowire single-photon detectors
Authors: Hallett Lily , Charaev Ilya , Agarwal Akshay , Dane Andrew , Colangelo Marco , Zhu Di , Berggren Karl K 
Published: January 2021

Abstract
We present a comprehensive study of molybdenum nitride (MoN) thin film deposition using direct current reactive magnetron sputtering. We have investigated the effect of various deposition conditions on the superconducting and electrical properties of the films. Furthermore, we have shown that meander-shaped single-photon detectors made from 5 nm MoN films have saturated quantum detection efficiency at the telecom wavelength of 1550 nm. Our results indicate that MoN may be a material of interest for practical applications of low-temperature superconductors, including single-photon detectors and transition-edge sensors.
The High Luminosity LHC interaction region magnets towards series production
Authors: Todesco E , Bajas H , Bajko M , Ballarino A , Bermudez S Izquierdo , Bordini B , Bottura L , De Rijk G , Devred A , Duarte Ramos D , Duda M , Ferracin P , Fessia P , Fleiter J , Fiscarelli L , Foussat A , Kirby G , Mangiarotti F , Mentink M , Milanese A , Musso A , Parma V , Perez J C , Prin H , Rossi L , Russenschuck S , Willering G , Enomoto S , Nakamoto T , Kimura N , Ogitsu T , Sugano M , Suzuki K , Wei S , Gong L , Wang J , Peng Q , Xu Q , Bersani A , Caiffi B , Fabbricatore P , Farinon S , Pampaloni A , Mariotto S , Prioli M , Sorbi M , Statera M , Garcia Matos J , Toral F , Ambrosio G , Apollinari G , Baldini M , Carcagno R , Feher S , Stoynev S , Chlachidze G , Marinozzi V , Lombardo V , Nobrega F , Strauss T , Yu M , Anerella M , Amm K , Joshi P , Muratore J , Schmalzle J , Wanderer P , Chen D , Gourlay S , Pong I , Prestemon S , Sabbi G L , Cooley L , Felice H 
Published: January 2021

Abstract
The High Luminosity Large Hadron Collider (HL-LHC) is the new flagship project of CERN. First endorsed in 2013 and approved in 2016, HL-LHC is an upgrade of the accelerator aiming to increase by a factor of ten the statistics of the LHC collisions at the horizon of 2035–2040. HL-LHC relies on cutting edge technologies: among them, large aperture superconducting magnets will replace the present hardware to allow a smaller beam size in two interaction points (IPs). The project involves the construction of about 150 magnets of six different types: the quadrupole triplet, two main dipoles and three orbit correctors. The triplet, manufactured at CERN and in the USA, will consist of 30 magnets based on Nb3Sn technology, with an operational peak field of 11.4 T. These will be the first quadrupole Nb3Sn magnets installed in a particle accelerator. The other five types of magnets, all relying on Nb–Ti technology, present non-trivial challenges in the design and construction; they will be manufactured as part of in-kind contribution under the responsibility of institutes in Japan, China, Spain, and Italy. The project is now in the phase of transition between qualification through short models and prototypes and the beginning of the series construction. In this paper we review the magnet requirements, the reasons for selecting the design, the technological challenges with respect to previous projects, and we summarize the steps that have been taken to validate the baseline.
Elucidating the origin of planar defects that enhance critical current density in CaKFe4As4 single crystals
Authors: Ichinose Ataru , Pyon Sunseng , Tamegai Tsuyoshi , Ishida Shigeyuki 
Published: January 2021

Abstract
CaKFe4As4 is a new member of the 1144-type iron-based superconductors (IBSs) which is expected to show remarkable superconducting properties because its crystal structure is similar to that of 122-type IBSs. Recently, substantial anisotropy between the in-plane and out-of-plane critical current densities (J
C), with peculiar temperature dependence of in-plane J
C at high fields, has been reported in CaKFe4As4 single crystals. The anisotropy of J
C was attributed to the presence of planar defects, which were shown to be confined to the ab plane. However, the origin of these defects remains unclear. To elucidate the origin of these planar defects, we herein present our results on atomic-scale microstructure analysis of high-quality CaKFe4As4 single crystals. Using high-resolution scanning transmission electron microscopy (STEM), along with electron energy loss spectroscopy, we have demonstrated that these planar defects consist of one- or two-layer KFe2As2 step network, which is spread over the periodically ordered KFe2As2 and CaFe2As2 monolayers. Further, we report that the dark contrast regions observed via conventional STEM are local strain distributions, which originate from the substitution of Ca by K in a unit cell.
Bayesian gradient sensing in the presence of rotational diffusion
Authors: Novak Maja , Friedrich Benjamin M 
Published: January 2021

Abstract
Biological cells estimate concentration gradients of signaling molecules with a precision that is limited not only by sensing noise, but additionally by the cell’s own stochastic motion. We ask for the theoretical limits of gradient estimation in the presence of both motility and sensing noise. We introduce a minimal model of a stationary chemotactic agent in the plane subject to rotational diffusion with rotational diffusion coefficient D. The agent uses Bayesian estimation to optimally infer the gradient direction relative to itself from noisy concentration measurements. Meanwhile, this direction changes on a time-scale 1/D. We show that the optimal effective measurement time, which characterizes the time interval over which past gradient measurements should be averaged to reduce sensing noise, does not scale with the rotational diffusion time 1/D, but with the square root (rD)−1/2, where r is a rate of information gain defined as a signal-to-noise ratio normalized per unit time. This result for gradient sensing parallels a recent result by Mora et al (2019 Phys. Rev. Lett.) for sensing absolute concentration in time-varying environments.
Unique superdiffusion induced by directionality in multiplex networks
Authors: Wang Xiangrong , Tejedor Alejandro , Wang Yi , Moreno Yamir 
Published: January 2021

Abstract
The multilayer network framework has served to describe and uncover a number of novel and unforeseen physical behaviors and regimes in interacting complex systems. However, the majority of existing studies are built on undirected multilayer networks while most complex systems in nature exhibit directed interactions. Here, we propose a framework to analyze diffusive dynamics on multilayer networks consisting of at least one directed layer. We rigorously demonstrate that directionality in multilayer networks can fundamentally change the behavior of diffusive dynamics: from monotonic (in undirected systems) to non-monotonic diffusion with respect to the interlayer coupling strength. Moreover, for certain multilayer network configurations, the directionality can induce a unique superdiffusion regime for intermediate values of the interlayer coupling, wherein the diffusion is even faster than that corresponding to the theoretical limit for undirected systems, i.e. the diffusion in the integrated network obtained from the aggregation of each layer. We theoretically and numerically show that the existence of superdiffusion is fully determined by the directionality of each layer and the topological overlap between layers. We further provide a formulation of multilayer networks displaying superdiffusion. Our results highlight the significance of incorporating the interacting directionality in multilevel networked systems and provide a framework to analyze dynamical processes on interconnected complex systems with directionality.
Self-organised stripe domains and elliptical skyrmion bubbles in ultra-thin epitaxial Au0.67Pt0.33/Co/W(110) films
Authors: Camosi Lorenzo , Garcia Jose Peña , Fruchart Olivier , Pizzini Stefania , Locatelli Andrea , Menteş Tevfik Onur , Genuzio Francesca , Shaw Justin M , Nembach Hans T , Vogel Jan 
Published: January 2021

Abstract
We studied the symmetry of magnetic properties and the resulting magnetic textures in ultra-thin epitaxial Au0.67Pt0.33/Co/W(110), a model system exhibiting perpendicular magnetic anisotropy and interface Dzyaloshinskii–Moriya interaction (DMI). As a peculiar feature, the C2v crystal symmetry induced by the Co/W interface results in an additional uniaxial in-plane magnetic anisotropy in the cobalt layer. Photo-emission electron microscopy with magnetic sensitivity reveals the formation of self-organised magnetic stripe domains oriented parallel to the hard in-plane magnetisation axis. We attribute this behavior to the lower domain wall energy when oriented along this axis, where both the DMI and the in-plane magnetic anisotropy favor a Néel domain wall configuration. The anisotropic domain wall energy also leads to the formation of elliptical skyrmion bubbles under a weak out-of-plane magnetic field.
Entanglement transfer, accumulation and retrieval via quantum-walk-based qubit–qudit dynamics
Authors: Giordani Taira , Innocenti Luca , Suprano Alessia , Polino Emanuele , Paternostro Mauro , Spagnolo Nicolò , Sciarrino Fabio , Ferraro Alessandro 
Published: January 2021

Abstract
The generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies. Achieving such non-classical high-dimensional resources will potentially unlock enhanced capabilities for quantum cryptography, communication and computation. We propose a protocol that is able to attain entangled states of d-dimensional systems through a quantum-walk (QW)-based transfer & accumulate mechanism involving coin and walker degrees of freedom. The choice of investigating QW is motivated by their generality and versatility, complemented by their successful implementation in several physical systems. Hence, given the cross-cutting role of QW across quantum information, our protocol potentially represents a versatile general tool to control high-dimensional entanglement generation in various experimental platforms. In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.
Parallel convection and E
×
B drifts in the TCV snowflake divertor and their effects on target heat-fluxes
Authors: Tsui C.K. , Boedo J.A. , Galassi D. , Loizu J. , Maurizio R. , Reimerdes H. , Duval B.P. , Février O. , Spolaore M. , Wensing M. , the TCV Team  , the Eurofusion MST1 Team  
Published: January 2021

Abstract
Parallel convection and E × B drifts act together to redistribute heat between the strike-points in the low field side snowflake minus (LFS SF−). The cumulative heat convection from both mechanisms is enhanced near the secondary X-point and is shown to dominate over heat conduction, partly explaining why the LFS SF− distributes power more evenly than the single null (SN) or other snowflake (SF) configurations. Pressure profiles at the entrance of the divertor are strongly affected by the position of the secondary X-point and magnetic field direction indicating the importance of E × B drifts. Pressure drops of up to 50% appear between the outer-midplane (OMP) and the divertor entrance enhancing the role of parallel heat convection. The electron temperature and density profiles and the radial turbulent fluxes measured at the OMP are largely unaffected by the changes in divertor geometry, even on flux surfaces where the connection length is infinite.
Suppression of first-wall interaction in negative triangularity plasmas on TCV
Authors: Han W. , Offeddu N. , Golfinopoulos T. , Theiler C. , Tsui C.K. , Boedo J.A. , Marmar E.S. , the TCV Team  
Published: January 2021

Abstract
Magnetically confined fusion plasmas with negative triangularity (δ) exhibit greater L-mode confinement than with positive δ. Recent experiments in the TCV and DIII-D tokamaks have correlated the confinement improvement to a reduction of fluctuations within the plasma core. We report on fluctuation measurements in the scrape-off layer (SOL) for −0.61 < δ < +0.64 in limited and diverted ohmic L-mode plasmas; these reveal a strong reduction in SOL fluctuation amplitudes at δ ≲ −0.25, and, surprisingly, an almost full suppression of plasma interaction with the main-chamber first-wall, which could have important implications for the prospects of using negative δ plasmas as a reactor solution. An exploration of several physical mechanisms suggests that a reduced connection length—intrinsic to negative δ plasmas—plays a critical role in the origin of this phenomenon.
Coherent perfect absorption in resonant materials
Authors: Shabahang Soroush , Jahromi Ali K , Pye Lorelle N , Perlstein Joshua D , Villinger Massimo L , Abouraddy Ayman F 
Published: January 2021

Abstract
Coherent perfect absorption (CPA) is an interferometric effect that guarantees full absorption in a lossy layer independently of its intrinsic losses. To date, it has been observed only at a single wavelength or over narrow bandwidths, whereupon wavelength-dependent absorption can be ignored. Here we produce CPA over a bandwidth of ∼60 nm in a 2 µm thick polymer film with a low-doping concentration of an organic laser dye. A planar cavity is designed with a spectral ‘dip’ to accommodate the dye resonant linewidth, and CPA is thus achieved even at its absorption edges. This approach allows realizing strong absorption in laser dyes—and resonant materials in general—independently of the intrinsic absorption levels, with a flat spectral profile and without suffering absorption quenching due to high doping levels.
Homological projective duality for quadrics
Authors: Kuznetsov Alexander , Perry Alexander 
Published: January 2021

We show that over an algebraically closed field of characteristic not equal to 2, homological projective duality for smooth quadric hypersurfaces and for double covers of projective spaces branched over smooth quadric hypersurfaces is a combination of two operations: one interchanges a quadric hypersurface with its classical projective dual and the other interchanges a quadric hypersurface with the double cover branched along it.
Verification of the ACL Top 50 Family (350, 550, and 750) for Harmonization of Routine Coagulation Assays in a Large Network of 60 Laboratories
Authors: Favaloro Emmanuel J , Mohammed Soma , Vong Ronny , McVicker Wendy , Chapman Kent , Swanepoel Priscilla , Kershaw Geoff , Cai Nancy , Just Sarah , Connelly Lynne , Prasad Ritam , Brighton Timothy , Pasalic Leonardo 
Published: January 2021

Abstract

Objectives
To verify a single platform of hemostasis instrumentation, the ACL TOP 50 Family, comprising 350, 550, and 750 instruments, across a large network of 60 laboratories.

Methods
Comparative evaluations of instrument classes (350 vs 550 and 750) were performed using a large battery of test samples for routine coagulation tests, comprising prothrombin time/international normalized ratio, activated partial thromboplastin time (APTT), thrombin time, fibrinogen and D-dimer, and using HemosIL reagents. Comparisons were also made against existing equipment (Diagnostica Stago Satellite, Compact, and STA-R Evolution) and existing reagents to satisfy national accreditation standards. Verification of manufacturer normal reference ranges (NRRs) and generation of an APTT heparin therapeutic range were undertaken.

Results
The three instrument types were verified as a single instrument class, which will permit standardization of methods and NRRs across all instruments (n = 75) to be deployed in 60 laboratories. In particular, ACL TOP 350 test result data were similar to ACL TOP 550 and 750 and showed no to limited bias. All manufacturer NRRs were verified with occasional minor variance.

Conclusions
This ACL TOP 50 Family (350, 550, and 750) verification will enable harmonization of routine coagulation across all laboratories in the largest public pathology network in Australia.
Sexual Identity Differences in Access to and Satisfaction With Health Care: Findings From Nationally Representative Data
Authors: Fish Jessica N , Turpin Rodman E , Williams Natasha D , Boekeloo Bradley O 
Published: January 2021

Abstract
Identification of barriers to adequate health care for sexual minority populations remains elusive given that they are complex and variable across sexual orientation subgroups (e.g., gay, lesbian, bisexual). To address these complexities, we used data from a US nationally representative sample of health-care consumers to assess sexual identity differences in health-care access and satisfaction. We conducted a secondary data analysis of 12 waves (2012–2018) of the biannual Consumer Survey of Health Care Access (n = 30,548) to assess sexual identity differences in 6 health-care access and 3 health-care satisfaction indicators. Despite parity in health insurance coverage, sexual minorities—with some variation across sexual minority subgroups and sex—reported more chronic health conditions alongside restricted health-care access and unmet health-care needs. Gay/lesbian women had the lowest prevalence of health-care utilization and higher prevalence rates of delaying needed health care and medical tests relative to heterosexual women. Gay/lesbian women and bisexual men were less likely than their heterosexual counterparts to be able to pay for needed health-care services. Sexual minorities also reported less satisfactory experiences with medical providers. Examining barriers to health care among sexual minorities is critical to eliminating health disparities that disproportionately burden this population.
DNAModAnnot: a R toolbox for DNA modification filtering and annotation
Authors: Hardy Alexis , Matelot Mélody , Touzeau Amandine , Klopp Christophe , Lopez-Roques Céline , Duharcourt Sandra , Defrance Matthieu 
Published: January 2021

Abstract

Motivation
Long-read sequencing technologies can be employed to detect and map DNA modifications at the nucleotide resolution on a genome-wide scale. However, published software packages neglect the integration of genomic annotation and comprehensive filtering when analyzing patterns of modified bases detected using Pacific Biosciences (PacBio) or Oxford Nanopore Technologies (ONT) data. Here, we present DNA Modification Annotation (DNAModAnnot), a R package designed for the global analysis of DNA modification patterns using adapted filtering and visualization tools.

Results
We tested our package using PacBio sequencing data to analyze patterns of the 6-methyladenine (6mA) in the ciliate Paramecium tetraurelia, in which high 6mA amounts were previously reported. We found P. tetraurelia 6mA genome-wide distribution to be similar to other ciliates. We also performed 5-methylcytosine (5mC) analysis in human lymphoblastoid cells using ONT data and confirmed previously known patterns of 5mC. DNAModAnnot provides a toolbox for the genome-wide analysis of different DNA modifications using PacBio and ONT long-read sequencing data.

Availability and implementation
DNAModAnnot is distributed as a R package available via GitHub (https://github.com/AlexisHardy/DNAModAnnot).

Supplementary information
Supplementary data are available at Bioinformatics online.