cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Linear classifier design under heteroscedasticity in Linear Discriminant Analysis
Creators: name: Gyamfi, Kojo Sarfo
name: Brusey, James
name: Hunt, Andrew
name: Gaura, Elena
Publisher: name: arXiv
Year: 2017
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Under normality and homoscedasticity assumptions, Linear Discriminant Analysis (LDA) is known to be optimal in terms of minimising the Bayes error for binary classification. In the heteroscedastic case, LDA is not guaranteed to minimise this error. Assuming heteroscedasticity, we derive a linear classifier, the Gaussian Linear Discriminant (GLD), that directly minimises the Bayes error for binary classification. In addition, we also propose a local neighbourhood search (LNS) algorithm to obtain a more robust classifier if the data is known to have a non-normal distribution. We evaluate the proposed classifiers on two artificial and ten real-world datasets that cut across a wide range of application areas including handwriting recognition, medical diagnosis and remote sensing, and then compare our algorithm against existing LDA approaches and other linear classifiers. The GLD is shown to outperform the original LDA procedure in terms of the classification accuracy under heteroscedasticity. While it compares favourably with other existing heteroscedastic LDA approaches, the GLD requires as much as 60 times lower training time on some datasets. Our comparison with the support vector machine (SVM) also shows that, the GLD, together with the LNS, requires as much as 150 times lower training time to achieve an equivalent classification accuracy on some of the datasets. Thus, our algorithms can provide a cheap and reliable option for classification in a lot of expert systems.
Nucleon-pion-state contribution in lattice calculations of moments of parton distribution functions
Creators: name: Bar, Oliver
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We employ chiral perturbation theory to calculate the nucleon-pion-state contribution to the 3-point correlation functions measured in lattice QCD to compute various moments of parton distribution functions (quark momentum fraction, helicity and transversity moment). We estimate the impact of the nucleon-pion-state contribution on the plateau method for lattice simulations with a physical pion mass. The nucleon-pion-state contribution results in an overestimation of all three moments. The overestimation is at the 5-20% level for source-sink separations of about 1.5 fm.
description: 20 pages, 8 figures. arXiv admin note: text overlap with arXiv:1606.09385
Microwave-assisted autohydrolysis of avocado seed for the recovery of antioxidant phenolics and glucose
Creators: name: Del-Castillo-Llamosas, Alexandra
name: Eibes, Gemma
name: Ferreira-Santos, Pedro
name: Pérez-Pérez, Alba
name: Del-Río, Pablo
name: Gullón, Beatriz
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 40
subject: Engineering

description: This study describes the valorization of avocado seed (AS) within a green biorefinery concept using microwave-assisted autohydrolysis. After the treatment at temperatures of 150–230 °C for 5 min, the resulting solid and liquor were characterized. The temperature of 220 °C led to the simultaneous optimal values of antioxidant phenolics/flavonoids (42.15 mg GAE/g AS, 31.89 RE/g AS, respectively) and glucose + glucooligosaccharides (38.82 g/L) in the liquor. Extraction with ethyl acetate allowed the recovery of the bioactive compounds while maintaining the polysaccharides in the liquor. The extract was rich in vanillin (99.02 mg/g AS) and contained several phenolic acids and flavonoids. The solid phase and the phenolic-free liquor were subjected to enzymatic hydrolysis to produce glucose, reaching values of 9.93 and 105 g glucose/L, respectively. This work demonstrates that microwave-assisted autohydrolysis is a promising technology to obtain fermentable sugars and antioxidant phenolic compounds from avocado seeds following a biorefinery scheme.
Design of PI Controller for Automatic Generation Control of Multi Area Interconnected Power System using Bacterial Foraging Optimization
Creators: name: Kumari, Naresh
name: Malik, Nitin
name: Jha, A. N.
name: Mallesham, Gaddam
Publisher: name: arXiv
Year: 2017
Subjects: subject: Systems and Control (eess.SY)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The system comprises of three interconnected power system networks based on thermal, wind and hydro power generation. The load variation in any one of the network results in frequency deviation in all the connected systems.The PI controllers have been connected separately with each system for the frequency control and the gains (Kp and Ki) of all the controllers have been optimized along with frequency bias (Bi) and speed regulation parameter (Ri). The computationally intelligent techniques like bacterial foraging optimization (BFO) and particle swarm optimization (PSO) have been applied for the tuning of controller gains along with variable parameters Bi and Ri. The gradient descent (GD) based conventional method has also been applied for optimizing the parameters Kp, Ki,Bi and Ri.The frequency responses are obtained with all the methods. The performance index chosen is the integral square error (ISE). The settling time, peak overshoot and peak undershoot of all the frequency responses on applying three optimization techniques have been compared. It has been observed that the peak overshoot and peak undershoot significantly reduce with BFO technique followed by the PSO and GD techniques. While obtaining such optimum response the settling time is increased marginally with bacterial foraging technique due to large number of mathematical equations used for the computation in BFO. The comparison of frequency response using three techniques show the superiority of BFO over the PSO and GD techniques. The designing of the system and tuning of the parameters with three techniques has been done in MATLAB/SIMULINK environment.
description: SCOPUS indexed Singapore journal, ISSN (Print): 2319-8613, ISSN (Online): 0975-4024, 8 pages, 11 Figures, 5 tables
Predicting Longitudinal Patterns in Dual Cigarette & E-Cigarette Use using Ecological Momentary Assessment Data
Creators: name: Sehrawat, Ujjwal
Publisher: name: University of Chicago
Year: 2023
Subjects: subject: US adult smoking cessation
subject: Dual use of cigarettes and electronic cigarettes
subject: Ecological momentary assessment data
subject: Affect dysregulation
subject: Intensive longitudinal data analysis
subject: Two-stage mixed-effects location scale modeling

description: Introduction: Tobacco smoking is a pressing US public health concern, necessitating effective cessation strategies. The rise of electronic cigarettes has spurred increased dual use of cigarettes and e-cigarettes, prompting inquiry into its potential for shifting smokers to e-cigarettes. This novel study examines the role of affect and affect dysregulation in influencing longitudinal smoking patterns among early-stage US adult dual users. Methods: We analyze data from an ecological momentary assessment (EMA) study of dual users, wherein real-time mood assessments of ‘urge’ (Urge), ‘positive affect change’ (PAC), and ‘negative affect change’ (NAC) were collected alongside smoking behaviors for a week. A two-stage mixed-effects location scale model is utilized to assess mean and intra-individual variability in EMA mood assessments as predictors of trends in cigarette and e-cigarette usage subsequently tracked using biweekly surveys for up to a year. Results: Results indicate that dual users who experience higher mean levels of Urge and PAC with respect to cigarette events, as well as greater intra-individual mood variability in Urge and PAC during the EMA week, are at a higher risk of experiencing subsequently lower e-cigarette adoption. Surprisingly, dual users with higher mean levels of NAC during EMA cigarette events and greater intra-individual variability in NAC during EMA week exhibit higher future e-cigarette adoption and cigarette use reduction respectively. Conclusion: This study yields insights into mood dynamics during early e-cigarette adoption among dual users. Identification of specific EMA mood assessments predictive of future trends in cigarette and e-cigarette use aids early-stage targeted intervention strategies for smoking cessation. Nuanced understandings of longitudinal smoking patterns among dual users also enhance the ongoing debate about e-cigarettes’ cessation efficacy.
The MUSE view of He 2-10: no AGN ionization but a sparkling starburst
Creators: name: Cresci, Giovanni
name: Vanzi, Leonardo
name: Telles, Eduardo
name: Lanzuisi, Giorgio
name: Brusa, Marcella
name: Mingozzi, Matilde
name: Sauvage, Marc
name: Johnson, Kelsey
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the physical and dynamical properties of the ionized gas in the prototypical HII galaxy Henize 2-10 using MUSE integral field spectroscopy. The large scale dynamics is dominated by extended outflowing bubbles, probably the results of massive gas ejection from the central star forming regions. We derive a mass outflow rate dMout/dt~0.30 Msun/yr, corresponding to mass loading factor eta~0.4, in range with similar measurements in local LIRGs. Such a massive outflow has a total kinetic energy that is sustainable by the stellar winds and Supernova Remnants expected in the galaxy. We use classical emission line diagnostic to study the dust extinction, electron density and ionization conditions all across the galaxy, confirming the extreme nature of the highly star forming knots in the core of the galaxy, which show high density and high ionization parameter. We measure the gas phase metallicity in the galaxy taking into account the strong variation of the ionization parameter, finding that the external parts of the galaxy have abundances as low as 12 + log(O/H)~8.3, while the central star forming knots are highly enriched with super solar metallicity. We find no sign of AGN ionization in the galaxy, despite the recent claim of the presence of a super massive active Black Hole in the core of He~2-10. We therefore reanalyze the X-ray data that were used to propose the presence of the AGN, but we conclude that the observed X-ray emission can be better explained with sources of a different nature, such as a Supernova Remnant.
description: 11 pages, 8 Figures, Accepted for publication in A&A
Teunia Q. M. Wang & F. Y. Bai 2020, gen. nov.
Creators: name: Li, A. - H.
name: Yuan, F. - X.
name: Groenewald, M.
name: Bensch, K.
name: Yurkov, A. M.
name: Li, K.
name: Han, P. - J.
name: Guo, L. - D.
name: Aime, M. C.
name: Sampaio, J. P.
name: Jindamorakot, S.
name: Turchetti, B.
name: Inacio, J.
name: Fungsin, B.
name: Wang, Q. - M.
name: Bai, F. - Y.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Tremellomycetes
Tremellales
Cryptococcaceae
Teunia

description: Teunia Q.M. Wang & F.Y. Bai gen. nov. MycoBank MB828751.
 Etymology: the genus is named in honour of Dr. Teun Boekhout for his contributions to yeast taxonomy.
 This genus is proposed for the clade represented by Cryptococcus cuniculi, which clustered with Fonsecazyma tronadorensis (Cryptococcus tronadorensis), Fonsecazyma betulae (Kwoniella betulae) and three new species represented by CGMCC 2.4450, CGMCC 2.5648 and CGMCC 2.3835, respectively. Member of the Cryptococcaceae (Tremellales). The genus is mainly circumscribed by the phylogenetic analysis of the seven genes dataset, in which it occurred as a well supported clade within Cryptococcaceae (Fig. 2).
Sexual reproduction not known. Colonies cream to yellow, butyrous to mucoid. Budding cells present. Pseudohyphae and hyphae are not produced. Ballistoconidia are not formed.
 Type species: Teunia korlaensis Q.M. Wang, F.Y. Bai & A.H. Li.
description: Published as part of Li, A. - H., Yuan, F. - X., Groenewald, M., Bensch, K., Yurkov, A. M., Li, K., Han, P. - J., Guo, L. - D., Aime, M. C., Sampaio, J. P., Jindamorakot, S., Turchetti, B., Inacio, J., Fungsin, B., Wang, Q. - M. & Bai, F. - Y., 2020, Diversity and phylogeny of basidiomycetous yeasts from plant leaves and soil: Proposal of two new orders, three new families, eight new genera and one hundred and seven new species, pp. 17-140 in Studies In Mycology 96 on page 86, DOI: 10.1016/j.simyco.2020.01.002, http://zenodo.org/record/10497182
title: Numerieke modellering waterbeheer: hindcast Demer juli 2021 - Scenario analyse
Creators: name: Bogman, Pieter
name: Zoeter, Frederik, F.
name: Van Eerdenbrugh, Katrien
name: Foqué, Maarten, M.
Publisher: name: IMDC
Year: 2023

description: Title : Volume : Issue : Pagination : 18
Surface-sampled simulations of turbulent flow at high Reynolds number
Creators: name: Sandham, Neil D.
name: Johnstone, Roderick
name: Jacobs, Christian T.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: A new approach to turbulence simulation, based on a combination of large-eddy simulation (LES) for the whole flow and an array of non-space-filling quasi-direct numerical simulations (QDNS), which sample the response of near-wall turbulence to large-scale forcing, is proposed and evaluated. The technique overcomes some of the cost limitations of turbulence simulation, since the main flow is treated with a coarse-grid LES, with the equivalent of wall functions supplied by the near-wall sampled QDNS. Two cases are tested, at friction Reynolds number Re$_τ$=4200 and 20,000. The total grid node count for the first case is less than half a million and less than two million for the second case, with the calculations only requiring a desktop computer. A good agreement with published DNS is found at Re$_τ$=4200, both in terms of the mean velocity profile and the streamwise velocity fluctuation statistics, which correctly show a substantial increase in near-wall turbulence levels due to a modulation of near-wall streaks by large-scale structures. The trend continues at Re$_τ$=20,000, in agreement with experiment, which represents one of the major achievements of the new approach. A number of detailed aspects of the model, including numerical resolution, LES-QDNS coupling strategy and sub-grid model are explored. A low level of grid sensitivity is demonstrated for both the QDNS and LES aspects. Since the method does not assume a law of the wall, it can in principle be applied to flows that are out of equilibrium.
description: Author accepted version. Accepted for publication in the International Journal for Numerical Methods in Fluids on 26 April 2017
Long range mediated interactions in a mixed dimensional system
Creators: name: Suchet, Daniel
name: Wu, Zhigang
name: Chevy, Frédéric
name: Bruun, Georg M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We present a mixed-dimensional atomic gas system to unambiguously detect and systematically probe mediated interactions. In our scheme, fermionic atoms are confined in two parallel planes and interact via exchange of elementary excitations in a three-dimensional background gas. This interaction gives rise to a frequency shift of the out-of-phase dipole oscillations of the two clouds, which we calculate using a strong coupling theory taking the two-body mixed-dimensional scattering into account exactly. The shift is shown to be easily measurable for strong interactions and can be used as a probe for mediated interactions.
description: 7 pages, 5 figures
Query Performance Optimization in XML Data Warehouses
Creators: name: Mahboubi, Hadj
name: Darmont, Jérôme
Publisher: name: arXiv
Year: 2017
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: XML data warehouses form an interesting basis for decision-support applications that exploit complex data. However, native-XML database management systems (DBMSs) currently bear limited performances and it is necessary to research for ways to optimize them. In this chapter, we present two such techniques. First, we propose a join index that is specifically adapted to the multidimensional architecture of XML warehouses. It eliminates join operations while preserving the information contained in the original warehouse. Second, we present a strategy for selecting XML materialized views by clustering the query workload. To validate these proposals, we measure the response time of a set of decision-support XQueries over an XML data warehouse, with and without using our optimization techniques. Our experimental results demonstrate their efficiency, even when queries are complex and data are voluminous.
description: arXiv admin note: substantial text overlap with arXiv:0809.1981, arXiv:0809.1963
Exact electrodynamics versus standard optics for a slab of cold dense gas
Creators: name: Javanainen, Juha
name: Ruostekoski, Janne
name: Li, Yi
name: Yoo, Sung-Mi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We study light propagation through a slab of cold gas using both the standard electrodynamics of polarizable media, and massive atom-by-atom simulations of the electrodynamics. The main finding is that the predictions from the two methods may differ qualitatively when the density of the atomic sample $ρ$ and the wavenumber of resonant light $k$ satisfy $ρk^{-3}\gtrsim 1$. The reason is that the standard electrodynamics is a mean-field theory, whereas for sufficiently strong light-mediated dipole-dipole interactions the atomic sample becomes correlated. The deviations from mean-field theory appear to scale with the parameter $ρk^{-3}$, and we demonstrate noticeable effects already at $ρk^{-3} \simeq 10^{-2}$. In dilute gases and in gases with an added inhomogeneous broadening the simulations show shifts of the resonance lines in qualitative agreement with the predicted Lorentz-Lorenz shift and "cooperative Lamb shift", but the quantitative agreement is unsatisfactory. Our interpretation is that the microscopic basis for the local-field corrections in electrodynamics is not fully understood.
Optimal Dividends in the Dual Risk Model under a Stochastic Interest Rate
Creators: name: Cheng, Zailei
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: FOS: Economics and business

description: Optimal dividend strategy in dual risk model is well studied in the literatures. But to the best of our knowledge, all the previous works assumes deterministic interest rate. In this paper, we study the optimal dividends strategy in dual risk model, under a stochastic interest rate, assuming the discounting factor follows a geometric Brownian motion or exponential Lévy process. We will show that closed form solutions can be obtained.
description: 19 pages, 2 figures
New Comment on Gibbs Density Surface of Fluid Argon: Revised Critical Parameters, L. V. Woodcock, Int. J. Thermophys. (2014) 35, 1770-1784
Creators: name: Umirzakov, Ikhtier H.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: It is shown that the existence of single critical point of the fluid described by van der Waals equation of state is not the hypothesis and it is the consequence of the thermodynamic conditions of liquid-vapor phase equilibrium. It is also shown that the thermodynamic conditions of liquid-vapor phase equilibrium of the fluid give equalities to zero of first and second partial derivatives at constant temperature of pressure with respect to volume at critical point which are usual conditions of existence of critical point.
Quantum phase transitions of light in a dissipative Dicke-Bose-Hubbard model
Creators: name: Wu, Ren-Cun
name: Tan, Lei
name: Zhang, Wen-Xuan
name: Liu, Wu-Ming
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The impacts that the environment has on the quantum phase transition of light in the DickeBose-Hubbard model are investigated. Based on the quasibosonic approach, mean field theory and the perturbation theory, the formulation of the Hamiltonian, the eigenenergies and the superfluid order parameter are obtained analytically. Compared with the ideal cases, the order parameter of the system evolves with time as the photons naturally decay in their environment. When the system starts with the superfluid state, the dissipation makes the photons tend to localize, and a greater hopping energy of photon is required to restore the long-range phase coherence of the localized state of the system. Furthermore, the Mott lobes disappears and the system tends to be classical with the number of atoms increasing; however, the atomic number is far lower than that expected under ideal circumstances. Therefore, our theoretical results offer valuable insight into the quantum phase transition of a dissipative system.
description: 8 pages, 4 figures
Complete photonic bandgaps in supercell photonic crystals
Creators: name: Cerjan, Alexander
name: Fan, Shanhui
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We develop a class of supercell photonic crystals supporting complete photonic bandgaps based on breaking spatial symmetries of the underlying primitive photonic crystal. One member of this class based on a two-dimensional honeycomb structure supports a complete bandgap for an index-contrast ratio as low as $n_{high}/n_{low} = 2.1$, making this the first such 2D photonic crystal to support a complete bandgap in lossless materials at visible frequencies. The complete bandgaps found in such supercell photonic crystals do not necessarily monotonically increase as the index-contrast in the system is increased, disproving a long-held conjecture of complete bandgaps in photonic crystals.
description: 5 pages, 4 figures
Fano Resonances in a Photonic Crystal Covered with a Perforated Gold Film and its Application to Biosensing
Creators: name: Klimov, Vasily V.
name: Pavlov, Andrey A.
name: Treshin, Ilya V.
name: Zabkov, Ilya V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Optical properties of the photonic crystal covered with a perforated metal film were investigated and the existence of the Fano-type resonances was shown. The Fano resonances originate from the interaction between the optical Tamm state and the waveguide modes of the photonic crystal. It manifests itself as a narrow dip in a broad peak in the transmission spectrum related to the optical Tamm state. The design of a sensor based on this Fano resonance that is sensitive to the change of the environment refractive index is suggested.
Reflective Metal/Semiconductor Tunnel Junctions for Hole Injection in AlGaN UV LEDs
Creators: name: Zhang, Yuewei
name: Krishnamoorthy, Sriram
name: Akyol, Fatih
name: Johnson, Jared M.
name: Allerman, Andrew A.
name: Moseley, Michael W.
name: Armstrong, Andrew M.
name: Hwang, Jinwoo
name: Rajan, Siddharth
Publisher: name: arXiv
Year: 2017
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work, we investigate the use of nanoscale polarization engineering to achieve efficient hole injection from metals to ultra-wide band gap AlGaN, and we show that UV-reflective aluminum (Al) layers can be used for hole injection into p-AlGaN. The dependence of tunneling on the work function of the metal was investigated, and it was found that highly reflective Al metal layers can enable efficient hole injection into p-AlGaN, despite the relatively low work function of Al. Efficient tunneling hole injection was confirmed by light emission at 326 nm with on-wafer peak external quantum efficiency and wall-plug efficiency of 2.65% and 1.55%, respectively. A high power density of 83.7 W/cm2 was measured at 1200 kA/cm2. The metal/semiconductor tunnel junction structure demonstrated here could provide significant advantages for efficient and manufacturable device topologies for high power UV emitters.
Dynamics of Charged Bulk Viscous Collapsing Cylindrical Source With Heat Flux
Creators: name: Shah, S. M.
name: Abbas, G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In this paper, we have explored the effects of dissipation on the dynamics of charged bulk viscous collapsing cylindrical source which allows the out follow of heat flux in the form of radiations. Misner-Sharp formulism has been implemented to drive the dynamical equation in term of proper time and radial derivatives. We have investigated the effects of charge and bulk viscosity on the dynamics of collapsing cylinder. To determine the effects of radial heat flux, we have formulated the heat transport equations in the context of M$\ddot{u}$ller-Israel-Stewart theory by assuming that thermodynamics viscous/heat coupling coefficients can be neglected within some approximations. In our discussion, we have introduced the viscosity by the standard (non-casual) thermodynamics approach. The dynamical equations have been coupled with the heat transport equation equation, the consequences of resulting coupled heat equation have been analyzed in detail.
description: 17 Pages, no figure
Translation Quality Evaluation (TQE) guidelines for assessing Adequacy and Fluency
Creators: name: Briva-Iglesias, Vicent
Publisher: name: Zenodo
Year: 2023

description: This document contains the guidelines evaluators should follow to assess Adequacy and Fluency in translations. The goal of these guidelines, which contain explanations and examples of each score, is to homogenize criteria of evaluators to obtain reproducible and reliable results in translation quality evaluation. This document has been produced in the following research project. Please cite: Briva-Iglesias, Vicent, Sharon O’Brien, and Benjamin R. Cowan. 2023. ‘The Impact of Traditional and Interactive Post-Editing on Machine Translation User Experience, Quality, and Productivity’. Translation, Cognition & Behavior
Electrical control of the sign of the g-factor in a GaAs hole quantum point contact
Creators: name: Srinivasan, A.
name: Hudson, K. L.
name: Miserev, D. S.
name: Yeoh, L. A.
name: Klochan, O.
name: Muraki, K.
name: Hirayama, Y.
name: Sushkov, O. P.
name: Hamilton, A. R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Zeeman splitting of 1D hole subbands is investigated in quantum point contacts (QPCs) fabricated on a (311) oriented GaAs-AlGaAs heterostructure. Transport measurements can determine the magnitude of the g-factor, but cannot usually determine the sign. Here we use a combination of tilted fields and a unique off-diagonal element in the hole g-tensor to directly detect the sign of g*. We are able to tune not only the magnitude, but also the sign of the g-factor by electrical means, which is of interest for spintronics applications. Furthermore, we show theoretically that the resulting behavior of g* can be explained by the momentum dependence of the spin-orbit interaction.
description: 5 pages, 4 figures
title: Innate Immune Cells during Machine Perfusion of Liver Grafts—The Janus Face of Hepatic Macrophages
Creators: name: Roushansarai, Nicola Sariye
name: Pascher, Andreas
name: Becker, Felix
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2023
Subjects: subject: 610 Medicine and health

description: Machine perfusion is an emerging technology in the field of liver transplantation. While machine perfusion has now been implemented in clinical routine throughout transplant centers around the world, a debate has arisen regarding its concurrent effect on the complex hepatic immune system during perfusion. Currently, our understanding of the perfusion-elicited processes involving innate immune cells remains incomplete. Hepatic macrophages (Kupffer cells) represent a special subset of hepatic immune cells with a dual pro-inflammatory, as well as a pro-resolving and anti-inflammatory, role in the sequence of ischemia–reperfusion injury. The purpose of this review is to provide an overview of the current data regarding the immunomodulatory role of machine perfusion and to emphasize the importance of macrophages for hepatic ischemia–reperfusion injury.
description: Finanziert durch den Open-Access-Publikationsfonds der Westfälischen Wilhelms-Universität Münster (WWU Münster).
Dynamic Analysis of Regression Problems in Industrial Systems: Challenges and Solutions
Creators: name: Pastore, Fabrizio
name: Mariani, Leonardo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: This paper presents the result of our experience with the ap- plication of runtime verification, testing and static analysis techniques to several industrial projects. We discuss the eight most relevant challenges that we experienced, and the strategies that we elaborated to face them.
The correlation between the Nernst effect and fluctuation diamagnetism in strongly fluctuating superconductors
Creators: name: Sarkar, Kingshuk
name: Banerjee, Sumilan
name: Mukerjee, Subroto
name: Ramakrishnan, T. V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the Nernst effect in fluctuating superconductors by calculating the transport coefficient $α_{xy}$ in a phenomenological model where relative importance of phase and amplitude fluctuations of the order parameter is tuned continuously to smoothly evolve from an effective XY model to more conventional Ginzburg-Landau description. To connect with a concrete experimental realization we choose the model parameters appropriate for cuprate superconductors and calculate $α_{xy}$ and the magnetization ${\bf M}$ over the entire range of experimentally accessible values of field, temperature and doping. We argue that $α_{xy}$ and ${\bf M}$ are both determined by the equilibrium properties of the superconducting fluctuations (and not their dynamics) despite the former being a transport quantity. Thus, the experimentally observed correlation between the Nernst signal and the magnetization arises primarily from the correlation between $α_{xy}$ and ${\bf M}$. Further, there exists a dimensionless ratio ${\bf M}/(T α_{xy})$ that quantifies this correlation. We calculate, for the first time, this ratio over the entire phase diagram of the cuprates and find it agrees with previous results obtained in specific parts of the phase diagram. We conclude that that there appears to be no sharp distinction between the regimes dominated by phase fluctuations and Gaussian fluctuations for this ratio in contrast to $α_{xy}$ and ${\bf M}$ individually. The utility of this ratio is that it can be used to determine the extent to which superconducting fluctuations contribute to the Nernst effect in different parts of the phase diagram given the measured values of magnetization.
description: 21 pages, 5 Figures, Single Column
Scaling relations in the diffusive infiltration in fractals
Creators: name: Reis, F. D. A. Aarao
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences

description: In a recent work on fluid infiltration in a Hele-Shaw cell with the pore-block geometry of Sierpinski carpets (SCs), the area filled by the invading fluid was shown to scale as F~t^n, with n<1/2, thus providing a macroscopic realization of anomalous diffusion [Filipovitch et al, Water Resour. Res. 52 5167 (2016)]. The results agree with simulations of a diffusion equation with constant pressure at one of the borders of those fractals, but the exponent n is very different from the anomalous exponent nu=1/D_W of single particle diffusion in the same fractals (D_W is the random walk dimension). Here we use a scaling approach to show that those exponents are related as n=nu(D_F-D_B), where D_F and D_B are the fractal dimensions of the bulk and of the border from which diffusing particles come, respectively. This relation is supported by accurate numerical estimates in two SCs and in two generalized Menger sponges (MSs), in which we performed simulations of single particle random walks (RWs) with a rigid impermeable border and of a diffusive infiltration model in which that border is permanently filled with diffusing particles. This study includes one MS whose external border is also fractal. The exponent relation is also consistent with the recent simulational and experimental results on fluid infiltration in SCs, and explains the approximate quadratic dependence of n on D_F in these fractals. We also show that the mean-square displacement of single particle RWs has log-periodic oscillations, whose periods are similar for fractals with the same scaling factor in the generator (even with different embedding dimensions), which is consistent with the discrete scale invariance scenario. The roughness of a diffusion front defined in the infiltration problem also shows this type of oscillation, which is enhanced in fractals with narrow channels between large lacunas.
description: 17 pages with 11 figures
BOSS Great Wall: morphology, luminosity, and mass
Creators: name: Einasto, Maret
name: Lietzen, Heidi
name: Gramann, Mirt
name: Saar, Enn
name: Tempel, Elmo
name: Liivamägi, Lauri Juhan
name: Montero-Dorta, Antonio D.
name: Streblyanska, Alina
name: Maraston, Claudia
name: Rubiño-Martín, José Alberto
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the morphology, luminosity and mass of the superclusters from the BOSS Great Wall (BGW), a recently discovered very rich supercluster complex at the redshift $z = 0.47$. We have employed the Minkowski functionals to quantify supercluster morphology. We calculate supercluster luminosities and masses using two methods. Firstly, we used data about the luminosities and stellar masses of high stellar mass galaxies with $\log(M_*/h^{-1}M_\odot) \geq 11.3$. Secondly, we applied a scaling relation that combines morphological and physical parameters of superclusters to obtain supercluster luminosities, and obtained supercluster masses using the mass-to-light ratios found for local rich superclusters. We find that the BGW superclusters are very elongated systems, with shape parameter values of less than $0.2$. This value is lower than that found for the most elongated local superclusters. The values of the fourth Minkowski functional $V_3$ for the richer BGW superclusters ($V_3 = 7$ and $10$) show that they have a complicated and rich inner structure. We identify two Planck SZ clusters in the BGW superclusters, one in the richest BGW supercluster, and another in one of the poor BGW superclusters. The luminosities of the BGW superclusters are in the range of $1 - 8\times~10^{13}h^{-2}L_\odot$, and masses in the range of $0.4 - 2.1\times~10^{16}h^{-1}M_\odot$. Supercluster luminosities and masses obtained with two methods agree well. We conclude that the BGW is a complex of massive, luminous and large superclusters with very elongated shape. The search and detailed study, including the morphology analysis of the richest superclusters and their complexes from observations and simulations can help us to understand formation and evolution of the cosmic web.
description: Comments: 10 pages, 2 figures, A&A, in press
Integral group rings with all central units trivial: solvable groups
Creators: name: Maheshwary, Sugandha
Publisher: name: arXiv
Year: 2016
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16U60, 16S34, 20C05

description: The object of this paper is to examine finite solvable groups whose integral group rings have only trivial central units.
description: 8 pages
Social Dynamics of Public Engagement in Stem Cell Research, 2005-2007
Creators: name: Faulkner, W.
name: Cunningham-Burley, S.
name: Parry, S.
name: Smith, A.
Publisher: name: UK Data Service
Year: 2010

description: This is a qualitative data collection.

 This project had two main aims: to investigate the range of views and concerns of people hold about stem cell research (SCR), and to explore critically the scope for increasing public engagement in SCR through a range of public engagement techniques. The research was conducted in two distinct but interrelated stages:
Stage I used focus groups, a tried and tested social science approach to exploring the views of different people. The 18 focus group discussions covered different issues relating to SCR such as sources of stem cells, applications, uncertainty and public engagement. Participants were drawn from scientists and clinicians working in the area, specialists who were not directly interested in stem cells, and the wider public, including those who may have had particular interest in SCR because of their experience of illness or disability, and others who may not have previously considered this type of research. Users should note that this data collection contains only the data from the 18 focus groups conducted at Stage I

Stage II involved eight public engagement events of different size and format. While some participants from Stage I attended the events, Stage II brought together a diverse range of people. The aim was to create a stimulating but comfortable environment within which people could discuss issues and learn from each other. Examples of the topics covered at the events included the regulation and commercialisation of SCR, the different sources of stem cells, and what people thought about using human ova for research purposes. The researchers used different formats for these events, based on deliberative methods, allowing people to think carefully about the issues concerned before forming opinions. The researchers held talks, question and answer sessions, small group discussions, ballots and games, all aimed at facilitating debate. In total, nearly 300 people participated in this stage of the research, 30 of whom came to more than one event. Where possible the researchers recorded what participants said, providing them with over 100 hours of research materials for analysis
Integration of antiferromagnetic Heusler compound Ru$_2$MnGe into spintronic devices
Creators: name: Balluff, Jan
name: Huminiuc, Teodor
name: Meinert, Markus
name: Hirohata, Atsufumi
name: Reiss, Günter
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the first integration of an antiferromagnetic Heusler compound acting as a pinning layer into magnetic tunneling junctions. The antiferromagnet Ru$_2$MnGe is used to pin the magnetization direction of a ferromagnetic Fe layer in MgO based thin film tunnelling magnetoresistance stacks. The samples were prepared using magnetron co-sputtering. We investigate the structural properties by X-ray diffraction and reflection, as well as atomic force and high-resolution transmission electron microscopy. We find an excellent crystal growth quality with low interface roughnesses of 1-3 Å, which is crucial for the preparation of working tunnelling barriers. Using Fe as a ferromagnetic electrode material we prepared magnetic tunneling junctions and measured the magnetoresistance. We find a sizeable maximum magnetoresistance value of 135%, which is comparable to other common Fe based MTJ systems.
description: 5 pages, 5 figures
Derxomyces cylindricus F. Y. Bai & Q. M. Wang 2020, sp. nov.
Creators: name: Li, A. - H.
name: Yuan, F. - X.
name: Groenewald, M.
name: Bensch, K.
name: Yurkov, A. M.
name: Li, K.
name: Han, P. - J.
name: Guo, L. - D.
name: Aime, M. C.
name: Sampaio, J. P.
name: Jindamorakot, S.
name: Turchetti, B.
name: Inacio, J.
name: Fungsin, B.
name: Wang, Q. - M.
name: Bai, F. - Y.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Tremellomycetes
Tremellales
Bulleribasidiaceae
Derxomyces
Derxomyces cylindricus

description: Derxomyces cylindricus F.Y. Bai, Q.M. Wang & M. Takash. ex F.Y. Bai & Q.M. Wang, sp. nov. MycoBank MB831863.
For description see Int. J. Syst. Evol. Microbiol. 54(5): 1879 (2004).
 Holotype: CGMCC AS 2.2308 (preserved in a metabolically inactive state).
 Synonyms: Bullera cylindrica F.Y. Bai, Q.M. Wang & M. Takash., Int. J. Syst. Evol. Microbiol. 54(5): 1879 (2004), nom. inval., Art. 40.7 (Shenzhen).
 = Derxomyces cylindrica F.Y. Bai, Q.M. Wang & M. Takash. ex F.Y. Bai & Q.M. Wang, FEMS Yeast Res. 8(5): 804 (2008), nom. inval., Art. 40.7 (Shenzhen).
description: Published as part of Li, A. - H., Yuan, F. - X., Groenewald, M., Bensch, K., Yurkov, A. M., Li, K., Han, P. - J., Guo, L. - D., Aime, M. C., Sampaio, J. P., Jindamorakot, S., Turchetti, B., Inacio, J., Fungsin, B., Wang, Q. - M. & Bai, F. - Y., 2020, Diversity and phylogeny of basidiomycetous yeasts from plant leaves and soil: Proposal of two new orders, three new families, eight new genera and one hundred and seven new species, pp. 17-140 in Studies In Mycology 96 on page 133, DOI: 10.1016/j.simyco.2020.01.002, http://zenodo.org/record/10497182
Experimental observations and modelling of intrinsic rotation reversals in tokamaks
Creators: name: Camenen, Y.
name: Angioni, C.
name: Bortolon, A.
name: Duval, B. P.
name: Fable, E.
name: Hornsby, W. A.
name: Mcdermott, R. M.
name: Na, D. H.
name: Na, Y-S.
name: Peeters, A. G.
name: Rice, J. E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The progress made in understanding spontaneous toroidal rotation reversals in tokamaks is reviewed and current ideas to solve this ten-year-old puzzle are explored. The paper includes a summarial synthesis of the experimental observations in AUG, C-Mod, KSTAR, MAST and TCV tokamaks, reasons why turbulent momentum transport is thought to be responsible for the reversals, a review of the theory of turbulent momentum transport and suggestions for future investigations.
Changing Perceptions of Citizens of India and Pakistan
Creators: name: Vashistha, Aditya
name: Raza, Agha Ali
name: Saif, Umar
name: Rosenfeld, Ronald
name: Anderson, Richard
Publisher: name: Carnegie Mellon University
Year: 2022
Subjects: subject: 100599 Communications Technologies not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 200105 Organisational, Interpersonal and Intercultural Communication
subject: FOS: Media and communications

description: Several wars, military stand-offs, and events of border skirmishes has resulted in vindictive and rancorous relationship between India and Pakistan. We propose to use a voice-based social media platform, Ummeed, to facilitate an inclusive and constructive dialogue between citizens of India and Pakistan, and measure the changes in perception brought by the dialogue.
Merging GW with DMFT and non-local correlations beyond
Creators: name: Tomczak, J. M.
name: Liu, P.
name: Toschi, A.
name: Kresse, G.
name: Held, K.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We review recent developments in electronic structure calculations that go beyond state-of-the-art methods such as density functional theory (DFT) and dynamical mean field theory (DMFT). Specifically, we discuss the following methods: GW as implemented in the Vienna {\it ab initio} simulation package (VASP) with the self energy on the imaginary frequency axis, GW+DMFT, and ab initio dynamical vertex approximation (D$Γ$A). The latter includes the physics of GW, DMFT and non-local correlations beyond, and allows for calculating (quantum) critical exponents. We present results obtained by the three methods with a focus on the benchmark material SrVO$_3$.
description: tutorial review submitted to EPJ-ST (scientific report of research unit FOR 1346); 11 figures 27 pages
Heavy Baryons and their Exotics from Instantons in Holographic QCD
Creators: name: Liu, Yizhuang
name: Zahed, Ismail
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use a variant of the $D4$-$D8$ construction that includes two chiral and one heavy meson, to describe heavy-light baryons and their exotics as heavy mesons bound to a flavor instanton in bulk. At strong coupling, the heavy meson is shown to {\it always bind} in the form of a flavor instanton zero mode in the fundamental representation. The ensuing instanton moduli for the heavy baryons exhibits both chiral and heavy quark symmetry. We detail how to quantize it, and derive model independent mass relations for heavy bayons with a single-heavy quark in leading order, in overall agreement with the reported baryonic spectra with one charm or bottom. We also discuss the low-lying masses and quantum assignments for the even and odd parity states, some of which are yet to be observed. We extend our analysis to double-heavy pentaquarks with hidden charm and bottom. In leading order, we find a pair of doube-heavy iso-doublets with $IJ^π=\frac 12 {\frac 12}^-, \frac 12 {\frac 32}^-$ assignments for all heavy flavor combinations. We also find five new Delta-like pentaquark states with $IJ^π=\frac 32 {\frac 12}^-, \frac 32 {\frac 32}^-, \frac 32 {\frac 52}^-$ assignments for both charm and bottom.
description: 11 pages, 1 figure. arXiv admin note: text overlap with arXiv:1611.03757
Derxomyces hubeiensis F. Y. Bai & Q. M. Wang 2020, sp. nov.
Creators: name: Li, A. - H.
name: Yuan, F. - X.
name: Groenewald, M.
name: Bensch, K.
name: Yurkov, A. M.
name: Li, K.
name: Han, P. - J.
name: Guo, L. - D.
name: Aime, M. C.
name: Sampaio, J. P.
name: Jindamorakot, S.
name: Turchetti, B.
name: Inacio, J.
name: Fungsin, B.
name: Wang, Q. - M.
name: Bai, F. - Y.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Tremellomycetes
Tremellales
Bulleribasidiaceae
Derxomyces
Derxomyces hubeiensis

description: Derxomyces hubeiensis F.Y. Bai, Q.M. Wang & M. Takash. ex F.Y. Bai & Q.M. Wang, sp. nov. MycoBank MB831864.
For description see Int. J. Syst. Evol. Microbiol. 54(5): 1880 (2004).
 Holotype: CGMCC AS 2.2466 (preserved in a metabolically inactive state).
 Synonyms: Bullera hubeiensis F.Y. Bai, Q.M. Wang & M. Takash., Int. J. Syst. Evol. Microbiol. 54(5): 1880 (2004), nom. inval., Art. 40.7 (Shenzhen).
 = Derxomyces hubeiensis F.Y. Bai, Q.M. Wang & M. Takash. ex F.Y. Bai & Q.M. Wang, FEMS Yeast Res. 8(5): 805 (2008), nom. inval., Art. 40.7 (Shenzhen).
description: Published as part of Li, A. - H., Yuan, F. - X., Groenewald, M., Bensch, K., Yurkov, A. M., Li, K., Han, P. - J., Guo, L. - D., Aime, M. C., Sampaio, J. P., Jindamorakot, S., Turchetti, B., Inacio, J., Fungsin, B., Wang, Q. - M. & Bai, F. - Y., 2020, Diversity and phylogeny of basidiomycetous yeasts from plant leaves and soil: Proposal of two new orders, three new families, eight new genera and one hundred and seven new species, pp. 17-140 in Studies In Mycology 96 on page 133, DOI: 10.1016/j.simyco.2020.01.002, http://zenodo.org/record/10497182