cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Leitfaden zur umweltfreundlichen öffentlichen Beschaffung von emissionsarmen Bodenbelagsklebstoffen und anderen Verlegewerkstoffen
title: Leitfaden zur umweltfreundlichen öffentlichen Beschaffung von emissionsarmen Bodenbelagsklebstoffen und anderen Verlegewerkstoffen
titleType: AlternativeTitle
Creators: name: (:Unkn) Unknown
Publisher: name: Umweltbundesamt
Year: 2016
Subjects: subject: Umweltfreundliche Beschaffung
subject: Öffentliche Beschaffung
subject: Beschaffung
subject: Klebstoff
subject: Mörtel
subject: Bodenbelagsklebstoffe
subject: Verlegewerkstoffe
subject: Wirtschaft | Konsum

description: Mit Verlegewerkstoffen wie Fliesenklebern, Spachtelmassen oder Klebefolien werden Untergründe für Bodenbeläge behandelt, um diese großflächig in Innenräumen zu verkleben. Aus Umwelt- und Gesundheitssicht sollten sie möglichst emissionsarm sein. Dieser Leitfadenhilft bei der Beschaffung von Produkten, die die Kriterien des Blauen Engels für emissionsarme Bodenbelagsklebstoffe und andere Verlegewerkstoffe (RAL-UZ 113) erfüllen. Quelle: https://www.umweltbundesamt.de
description: Mit Verlegewerkstoffen wie Fliesenklebern oder Spachtelmassen werden Untergründe für Bodenbeläge behandelt, um diese großflächig in Innenräumen zu verkleben. Aus Umwelt- und Gesundheitssicht sollten sie möglichst emissionsarm sein.Dieser Leitfaden hilft bei der Beschaffung von Produkten, die die Kriterien des Blauen Engels für emissionsarme Bodenbelagsklebstoffe und andere Verlegewerkstoffe (DE-UZ 113, Ausgabe Januar 2019) erfüllen.
Towards modeling cluster structure of $^8$Be with chiral interaction
Creators: name: Fukui, Tokuro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: How the nuclear force behaves in cluster states, in particular those consisting of the $α$ clusters, has been investigated so far, but not yet elucidated. Today the chiral effective field theory is established and it would shed new light on the microscopic understanding of the cluster states. We aim to address a possible source of the attraction in the cluster states of $^8\mathrm{Be}$ in view of the pion exchange. Namely, we investigate whether the two-pion-exchange interaction acts as a dominant attraction in the $α+α$ system as predicted by a previous work. We describe theoretically the cluster structure of $^8\mathrm{Be}$ by the Brink model, for which the effective interaction is designed from the realistic nuclear force derived through the chiral effective field theory. The two-body matrix elements of the chiral interaction with the local-Gaussian bases are formulated within the approximation of the spin-isospin saturation forming an $α$ particle. Introducing a global prefactor to the chiral interaction phenomenologically, the ground and low-lying excited states of $^8\mathrm{Be}$, the scattering phase shift of the $α$-$α$ system as well, are satisfactorily depicted. The attraction in the cluster states is found to be stemming from the two-pion-exchange contributions dominantly, along with nonnegligible short-range terms. The present work can be the foundation towards constructing realistic cluster models, by which the cluster states will be revealed microscopically in the next step.
description: 38 pages, 11 figures, 8 tables
title: Tuberculosis meningoencephalitis mimicking herpes encephalitis
Creators: name: Chandra, Ankur
Publisher: name: EURORAD
Year: 2024
Subjects: subject: Neuroradiology
subject: Neuroradiology brain
subject: MR
subject: Contrast agent-intravenous
subject: Puncture
subject: Clinical Case

description: Clinical History: A 42-year-old female with a history of chronic cough and night sweats presented to the emergency department with a 2-week history of headache, fever, confusion, and altered mental status. The patient had no significant past medical history or known contact with tuberculosis. On examination, she was febrile (38.5°C), disoriented, and had nuchal rigidity. No focal neurological deficits were noted.

description: 42 years, female
Local shape of the vapor-liquid critical point on the thermodynamic surface and the van der Waals equation of state
Creators: name: Yu, J. S.
name: Zhou, X.
name: Chen, J. F.
name: Du, W. K.
name: Wang, X.
name: Liu, Q. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Differential geometry is powerful tool to analyze the vapor-liquid critical point on the surface of the thermodynamic equation of state. The existence of usual condition of the critical point $\left( \partial p/\partial V\right) _{T}=0$ requires the isothermal process, but the universality of the critical point is its independence of whatever process is taken, and so we can assume $\left( \partial p/\partial T\right) _{V}=0$. The distinction between the critical point and other points on the surface leads us to further assume that the critical point is geometrically represented by zero Gaussian curvature. A slight extension of the van der Waals equation of state is to letting two parameters $a$ and $b$ in it vary with temperature, which then satisfies both assumptions and reproduces its usual form when the temperature is approximately the critical one.
description: 6 pages. substantially revised
Dynamical reciprocity in interacting games: numerical results and mechanism analysis
Creators: name: Liang, Rizhou
name: Wang, Qinqin
name: Zhang, Jiqiang
name: Zheng, Guozhong
name: Ma, Lin
name: Chen, Li
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We study the evolution of two mutually interacting games with both pairwise games as well as the public goods game on different topologies. On 2d square lattices, we reveal that the game-game interaction can promote the cooperation prevalence in all cases, and the cooperation-defection phase transitions even become absent and fairly high cooperation is expected when the interaction goes to be very strong. A mean-field theory is developed that points out new dynamical routes arising therein. Detailed analysis shows indeed that there are rich categories of interactions in either individual or bulk scenario: invasion, neutral, and catalyzed types; their combination puts cooperators at a persistent advantage position, which boosts the cooperation. The robustness of the revealed reciprocity is strengthened by the studies of model variants, including asymmetrical or time-varying interactions, games of different types, games with time-scale separation, different updating rules etc. The structural complexities of the underlying population, such as Newman--Watts small world networks, Erdős--Rényi random networks, and Barabási--Albert networks, also do not alter the working of the dynamical reciprocity. In particular, as the number of games engaged increases, the cooperation level continuously improves in general. Our work thus uncovers a new class of cooperation mechanism and indicates the great potential for human cooperation where concurrent issues are so often seen in the real world.
description: 22 pages, 19 figures, 2 tables, a companion short paper (arXiv:2101.00359) is also posted. Any comments are welcomed
An exploration of secondary trauma effects in members of the Victoria Police Force
Creators: name: Wheeler, Susan
Publisher: name: Swinburne
Year: 2024

description: The purpose of the current study was to thoroughly examine the phenomenon of secondary traumatic stress (STS). STS is said to mirror the symptomatology of PTSD, such as intrusive thoughts, nightmares, and avoidance, and develops in professionals who assist and counsel the traumatised (Figley, 1995a). Prominent risk factors for the development of STS are said to include having one’s own prior trauma history, dealing with victims of sexual abuse and working with traumatized children (Beaton & Murphy, 1995; Cunningham, 2003; Figley, 1995a), with the necessary conduit for STS development being empathic concern (Figley, 1995a). The current study investigated if secondary trauma could be determined in Victoria Police members and particularly in police officers working in sexual offences and child abuse units (SOCAU). Participants were 210 police officers (135 men and 75 women) with ages ranging from 20 to 55 years (men M = 41.5 years, SD = 6.9; women, M = 36.8, SD = 7.04). The current results revealed that there was strong convergence between scores on the Secondary Traumatic Stress Scale (STSS; Bride, Robinson, Yegidis & Figley, 2004) and scores on the measure of Emotional Exhaustion (a subscale within the Maslach Burnout Inventory; Maslach & Jackson, 1986). Furthermore, none of the main theoretical antecedents (proposed by Figley, 1995a) predicted the development of STS and multiple regressions revealed that the same five variables (Alcohol Use, less Emotional Stability, lack of Social Support, Denial, and Turnover Intent) predicted both STS and Emotional Exhaustion to the same degree (accounting for 51% of the variance in each construct). The predictors themselves are not trauma specific, and have been studied extensively in the burnout literature. The prevalence of Prior Trauma in police officers was not different from what could be expected in other populations and SOCAU did not appear to be a location that was especially risky for the development of Emotional Exhaustion, STS or PTSD when compared to other police work areas. In addition, qualitative responses indicated that administration issues, a lack of resources, internal politics and management issues were more concerning to police than victim stress. A re-evaluation of the definition and contributing factors to STS seems warranted, given the mounting research suggesting an overlap between burnout and STS. Future studies concerned with the possible psychological impact of working with trauma victims should incorporate organisational variables, in order to more comprehensively examine the phenomenon.
Aesculus hippocastanum L. as a Stabilizer in Hemp Seed Oil Nanoemulsions for Potential Biomedical and Food Applications
Creators: name: Jarzębski, Maciej
name: Smułek, Wojciech
name: Siejak, Przemysław
name: Rezler, Ryszard
name: Pawlicz, Jarosław
name: Trzeciak, Tomasz
name: Jarzębska, Małgorzata
name: Majchrzak, Oliwia
name: Kaczorek, Ewa
name: Kazemian, Pardis
name: Ponieważ-Pawlicz, Marta
name: Fathordoobady, Farahnaz
Publisher: name: Multidisciplinary Digital Publishing Institute
Year: 2021

description: Nanoemulsion systems receive a significant amount of interest nowadays due to their promising potential in biomedicine and food technology. Using a two-step process, we produced a series of nanoemulsion systems with different concentrations of hemp seed oil (HSO) stabilized with Aesculus hippocastanum L. extract (AHE). Water and commercially-available low-concentrated hyaluronic acid (HA) were used as the liquid phase. Stability tests, including an emulsifying index (EI), and droplet size distribution tests performed by dynamic light scattering (DLS) proved the beneficial impact of AHE on the emulsion’s stability. After 7 days of storage, the EI for the water-based system was found to be around 100%, unlike the HA systems. The highest stability was achieved by an emulsion containing 5% HSO and 2 g/L AHE in water, as well as the HA solution. In order to obtain the detailed characteristics of the emulsions, UV-Vis and FTIR spectra were recorded, and the viscosity of the samples was determined. Finally, a visible microscopic analysis was used for the homogeneity evaluation of the samples, and was compared with the DLS results of the water system emulsion, which showed a desirable stability. The presented results demonstrate the possible use of oil emulsions based on a plant extract rich in saponins, such as AHE. Furthermore, it was found that the anti-inflammatory properties of AHE provide opportunities for the development of new emulsion formulations with health benefits.
The curvature-induced gauge potential and the geometric momentum for a particle on a hypersphere
Creators: name: Li, Z.
name: Lai, L. Q.
name: Zhong, Y.
name: Liu, Q. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A particle that is constrained to freely move on a hyperspherical surface in an $N\left( \geq 2\right) $ dimensional flat space experiences a curvature-induced gauge potential, whose form was given long ago (J. Math. Phys. \textbf{34}(1993)2827). We demonstrate that the momentum for the particle on the hypersphere is the geometric one including the gauge potential and its components obey the commutation relations $\left[ p_{i},p_{j}\right] =-i\hbar J_{ij}/r^{2}$, in which $\hbar $ is the Planck's constant, and $p_{i}$ ($i,j=1,2,3,...N$) denotes the $i-$th component of the geometric momentum, and $J_{ij}$ specifies the $ij-$th component of the generalized\textit{\ angular momentum} containing both the orbital part and the coupling of the generators of continuous rotational symmetry group $% SO(N-1)$ and curvature, and $r$ denotes the radius of the $N-1$ dimensional hypersphere.
description: 7 pages, no figure. Major revision in both scientific content and represetation
Mean curvature flow in null hypersurfaces and the detection of MOTS
Creators: name: Roesch, Henri
name: Scheuer, Julian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study the mean curvature flow in 3-dimensional null hypersurfaces. In a spacetime a hypersurface is called null, if its induced metric is degenerate. The speed of the mean curvature flow of spacelike surfaces in a null hypersurface is the projection of the codimension-two mean curvature vector onto the null hypersurface. We impose fairly mild conditions on the null hypersurface. Then for an outer un-trapped initial surface, a condition which resembles the mean-convexity of a surface in Euclidean space, we prove that the mean curvature flow exists for all times and converges smoothly to a marginally outer trapped surface (MOTS). As an application we obtain the existence of a global foliation of the past of an outermost MOTS, provided the null hypersurface admits an un-trapped foliation asymptotically.
description: 24 pages
Line graph characterization of power graphs of finite nilpotent groups
Creators: name: Bera, Sudip
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C25, 20D10

description: This paper deals with the classification of groups $G$ such that power graphs and proper power graphs of $G$ are line graphs. In fact, we classify all finite nilpotent groups whose power graphs are line graphs. Also, we categorize all finite nilpotent groups (except non-abelian $2$-groups) whose proper power graphs are line graphs. Moreover, we investigate when the proper power graphs of generalized quaternion groups are line graphs. Besides, we derive a condition on the order of the dihedral groups for which the proper power graphs of the dihedral groups are line graphs.
description: 19 pages, 6 figures
Inefficiencies in Germany´s Federal Transport Infrastructure Plan
Creators: name: Frey, Kilian
Publisher: name: My University
Year: 2014

description: In Germany, a federal transport infrastructure plan (FTIP) is drawn up every 10 to 15 years as a basis for decision-making as to which infrastructure projects should be realized in the upcoming years. A point raised in relevant debates is that less economically efficient new construction of motorways in regions with light traffic is sometimes preferred by political leaders over economically more efficient upgrading of motorways in congested regions. This contribution gives background information on the FTIP and presents results of a study in which 199 planned motorway construction projects from the Federal Transport Infrastructure Plan of 2003 in Bavaria were analysed. Benefit-cost ratio and political prioritisation were examined. The study gives explanations for inefficient prioritisation and discusses possibilities how to increase efficiency. A reasonable prioritisation of projects and a long-term financing system for motorway infrastructure could help to improve the situation faster and would also be more cost-effective. This also leads to better environmental sustainability.
Quelle: http://trid.trb.org/
Dynamical quantum indistinguishability
Creators: name: Trachenko, K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We observe that quantum indistinguishability is a dynamical effect dependent on measurement duration. We propose a quantitative criterion for observing indistinguishability in quantum fluids and its implications including quantum statistics and derive a viscoelastic function capable of describing both long-time and short-time regimes where indistinguishability and its implications are operative and inactive, respectively. On the basis of this discussion, we propose an experiment to observe a transition between two states where the implications of indistinguishability become inoperative, including a transition between statistics-active and statistics-inactive states.
Universal non-Debye low-frequency vibrations in sheared amorphous solids
Creators: name: Krishnan, Vishnu V.
name: Ramola, Kabir
name: Karmakar, Smarajit
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study energy minimized configurations of amorphous solids with a simple shear degree of freedom. We show that the low-frequency regime of the vibrational density of states of structural glass formers is crucially sensitive to the stress-ensemble from which the configurations are sampled. In both two and three dimensions, a shear-stabilized ensemble displays a $D(ω_{\min}) \sim ω^{5}_{\min}$ regime, as opposed to the $ω^{4}_{\min}$ regime observed under unstrained conditions. We also study an ensemble of two dimensional, strained amorphous solids near a plastic event. We show that the minimum eigenvalue distribution at a strain $γ$ near the plastic event occurring at $γ_{P}$, displays a collapse when scaled by $\sqrt{γ_P - γ}$, and with the number of particles as $N^{-0.22}$. Notably, at low-frequencies, this scaled distribution displays a robust $D(ω_{\min}) \sim ω^{6}_{\min}$ power-law regime, which survives in the large $N$ limit. Finally, we probe the universal properties of this ensemble through a characterization of the second and third eigenvalues of the Hessian matrix near a plastic event.
description: 6 pages, 4 figures, +Supplemental Material, changes: clarifications, 3D data, schematics
Elastic and inelastic $J/ψ$ photoproduction in $p$-$p$ collisions at LHC energies: the feature of Weizsäcker-Williams approximation
Creators: name: Ma, Zhi-Lei
name: Lu, Zhun
name: Zhu, Jia-Qing
name: Zhang, Li
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The $J/ψ$ production originating from elastic and inelastic photoproduction processes in p-p collisions at LHC energies is investigated, where the fragmentation processes are involved. An exact treatment is performed, which adopts the Martin-Ryskin method to weight the contribution from different channels, and can return to Weizsäcker-Williams approximation (WWA) when $Q^{2}\rightarrow0$. The relevant kinematical relations are also achieved. We present a comprehensive analysis for the feature of WWA by comparing with the exact treatment. The results are expressed in $Q^{2}$, $y$, $z$, $p_{T}$, and $y_{r}$ (rapidity) distributions, and the total cross sections are also estimated. The numerical results indicate that, the incoherent-photon emission can provide the meaningful contribution to elastic photoproduction, and starts to play a very important role in the inelastic processes. The photoproduction and fragmentation processes can improve the contribution of $J/ψ$ production in $p$-$p$ collisions at LHC energies. Moreover, the WWA is only effective in very restricted domains, and the exact treatment is needed to deal accurately with the $J/ψ$ photoproduction, which can naturally avoid double counting and WWA errors.
description: 19 pages, 8 figures
On the topology of some hyperspaces of convex bodies associated to tensor norms
Creators: name: Higueras-Montaño, Luisa F.
name: Jonard-Pérez, Natalia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geometric Topology (math.GT)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 57N20, 46M05, 52A21, 57S20, 54C55, 15A69

description: For every tuple $d_1,\dots, d_l\geq 2,$ let $\mathbb{R}^{d_1}\otimes\cdots\otimes\mathbb{R}^{d_l}$ denote the tensor product of $\mathbb{R}^{d_i},$ $i=1,\dots,l.$ Let us denote by $\mathcal{B}(d)$ the hyperspace of centrally symmetric convex bodies in $\mathbb{R}^d,$ $d=d_1\cdots d_l,$ endowed with the Hausdorff distance, and by $\mathcal{B}_\otimes(d_1,\dots,d_l)$ the subset of $\mathcal{B}(d)$ consisting of the convex bodies that are closed unit balls of reasonable crossnorms on $\mathbb{R}^{d_1}\otimes\cdots\otimes\mathbb{R}^{d_l}.$ It is known that $\mathcal{B}_\otimes(d_1,\dots,d_l)$ is a closed, contractible and locally compact subset of $\mathcal{B}(d).$ The hyperspace $\mathcal{B}_\otimes(d_1,\dots,d_l)$ is called the space of tensorial bodies. In this work we determine the homeomorphism type of $\mathcal{B}_\otimes(d_1,\dots,d_l).$ We show that even if $\mathcal{B}_\otimes(d_1,\dots,d_l)$ is not closed with respect to the Minkowski sum, it is an absolute retract homeomorphic to $\mathcal{Q}\times\mathbb{R}^p,$ where $\mathcal{Q}$ is the Hilbert cube and $p=\frac{d_1(d_1+1)+\cdots+d_l(d_l+1)}{2}.$ Among other results, the relation between the Banach-Mazur compactum and the Banach-Mazur type compactum associated to $\mathcal{B}_\otimes(d_1,\dots,d_l)$ is examined.
description: 28 pages. Among others, in this version we added an illustrative figure for the proof of Lemma 2.6. A gap on the selection of $r$ in the proof of lemma 2.6 was corrected. We provide a new sentence for Proposition 5.2. This new statement improves the result
Count us in! report of a pilot project addressing social inclusion for people living in residential aged care
Creators: name: Malta, Sue
Publisher: name: Swinburne
Year: 2024

description: The Department of Human Services Count Us In! initiative was launched in 2006 to promote social inclusion for people living in residential aged care. The initiative provided grants to community organizations and Public Sector Residential Aged Care Services (PSRACS) to implement 16 pilot projects across metropolitan and rural Victoria. The aims of the projects were to: * identify and break down barriers to social inclusion * provide current residents with opportunities to be involved in positive activities * produce positive examples of approaches that work * establish and build on existing resources and networks to support inclusion * change behaviours, attitudes and cultures of all stakeholders. This presentation describes one such pilot project run by Eastern Access Community Health (EACH) and implemented in 2007/2008 in Healesville, in Melbourne’s outer east. The project was successful, not only in meeting all criteria but by becoming self-sustainable at the end of the pilot phase. The project is marked as an exemplar due to its ease of implementation and its ability to bring together different community and partnership sectors, but also because of its relative low cost and high capacity to deliver benefits to its identified population group. The most important aspect of this particular project, however, is its potential to be easily applied in other areas on a state-wide or even National basis.
Symmetry-Enforced Nodal Chain Phonons
Creators: name: Zhu, Jiaojiao
name: Wu, Weikang
name: Zhao, Jianzhou
name: Chen, Hao
name: Zhang, Lifa
name: Yang, Shengyuan A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Topological phonons in crystalline materials have been attracting great interest. However, most cases studied so far are direct generalizations of the topological states from electronic systems. Here, we reveal a novel class of topological phonons -- the symmetry-enforced nodal-chain phonons, which manifest features unique for phononic systems. We show that with $D_{2d}$ little co-group at a non-time-reversal-invariant-momentum point, the phononic nodal chain is guaranteed to exist owing to the vector basis symmetry of phonons, which is a unique character distinct from electronic and other systems. Combined with the spinless character, this makes the proposed nodal-chain phonons enforced by symmorphic crystal symmetries. We further screen all 230 space groups, and find five candidate groups. Interestingly, the nodal chains in these five groups exhibit two different patterns: for tetragonal systems, they are one-dimensional along the fourfold axis; for cubic systems, they form a three-dimensional network structure. Based on first-principles calculations, we identify K$_{2}$O as a realistic material hosting almost ideal nodal-chain phonons. We show that the effect of LO-TO splitting, another unique feature for phonons, helps to expose the nodal-chain phonons in K$_{2}$O in a large energy window. In addition, all the five candidate groups have spacetime inversion symmetry, so the nodal chains also feature a quantized $π$ Berry phase. This leads to drumhead surface phonon modes that must exist on multiple surfaces of a sample.
description: 6 pages, 4 figures
When Fair Ranking Meets Uncertain Inference
Creators: name: Ghosh, Avijit
name: Dutt, Ritam
name: Wilson, Christo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Computers and Society (cs.CY)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Existing fair ranking systems, especially those designed to be demographically fair, assume that accurate demographic information about individuals is available to the ranking algorithm. In practice, however, this assumption may not hold -- in real-world contexts like ranking job applicants or credit seekers, social and legal barriers may prevent algorithm operators from collecting peoples' demographic information. In these cases, algorithm operators may attempt to infer peoples' demographics and then supply these inferences as inputs to the ranking algorithm. In this study, we investigate how uncertainty and errors in demographic inference impact the fairness offered by fair ranking algorithms. Using simulations and three case studies with real datasets, we show how demographic inferences drawn from real systems can lead to unfair rankings. Our results suggest that developers should not use inferred demographic data as input to fair ranking algorithms, unless the inferences are extremely accurate.
description: Accepted as full paper at SIGIR 2021
Hardy-Rellich and second order Poincaré identities on the hyperbolic space via Bessel pairs
Creators: name: Berchio, Elvise
name: Ganguly, Debdip
name: Roychowdhury, Prasun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We prove a family of Hardy-Rellich and Poincaré identities and inequalities on the hyperbolic space having, as particular cases, improved Hardy-Rellich, Rellich and second order Poincaré inequalities. All remainder terms provided considerably improve those already known in literature, and all identities hold with same constants for radial operators also. Furthermore, as applications of the main results, second order versions of the uncertainty principle on the hyperbolic space are derived.
description: 22 Pages
Foundation of one-particle reduced density matrix functional theory for excited states
Creators: name: Liebert, Julia
name: Castillo, Federico
name: Labbé, Jean-Philippe
name: Schilling, Christian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In [Phys. Rev. Lett. 127, 023001 (2021)] a reduced density matrix functional theory (RDMFT) has been proposed for calculating energies of selected eigenstates of interacting many-fermion systems. Here, we develop a solid foundation for this so-called $\boldsymbol{w}$-RDMFT and present the details of various derivations. First, we explain how a generalization of the Ritz variational principle to ensemble states with fixed weights $\boldsymbol{w}$ in combination with the constrained search would lead to a universal functional of the one-particle reduced density matrix. To turn this into a viable functional theory, however, we also need to implement an exact convex relaxation. This general procedure includes Valone's pioneering work on ground state RDMFT as the special case $\boldsymbol{w}=(1,0,\ldots)$. Then, we work out in a comprehensive manner a methodology for deriving a compact description of the functional's domain. This leads to a hierarchy of generalized exclusion principle constraints which we illustrate in great detail. By anticipating their future pivotal role in functional theories and to keep our work self-contained, several required concepts from convex analysis are introduced and discussed.
description: published version; in particular various derivations of the letter arXiv:2106.02560 are provided
Picardia bunga Ustjuzhanin & Kovtunovich 2022, sp. nov.
Creators: name: Ustjuzhanin, Petr Ya.
name: Kovtunovich, Vasily N.
name: Streltzov, Alexander N.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Pterophoridae
Picardia
Picardia bunga

description: Picardia bunga Ustjuzhanin & Kovtunovich, sp. nov.
http://zoobank.org/ urn:lsid:zoobank.org:act: 0BD1A950-E582-4117-9FF6-38BF2AA10F3F
Figs 6−7
 Type material: Holotype, male, (ZISP, gen.pr. Nr. 1984), Zimbabwe, Manicaland Prov., Bvumbe Bunga Forest, 19°07'14"S 32°46'10"E, h – 1650m; 04-05.XII.2010 P. Ustjuzhanin & V. Kovtunovich.
 External characters. Head, thorax and tegulae with light-brown scales. Labial palpi brown, thin, slightly shorter than longitudinal eye diameter. Antennae thin, light-brown. Wingspan 18,5 mm. Fore wings yellowish-brown, with v-shaped brown spot at cleft base. Fringe inside cleft light-yellow. Small brown spot on first lobe distally. Three small narrow brown strokes on dorsal margin of second lobe. Hind wings of the same color as fore wings. Fringe on all wings light-yellow. Hind legs yellow.
 Male genitalia. Valves narrow, elongated. At base of left valve, sclerotized clavate saccular process with prongs on top. On right valve, narrow saccular process, distally curved, medially with additional outgrowth sticking out perpendicularly to saccular process. Uncus narrow, slightly curved, apically acute. Anellus arms asymmetric, left arm slightly shorter than right arm. Saccus arched. Aedeagus 1.5 times shorter than valve, slightly curved distally.
 Diagnosis. In the male genitalia, in the shape of the saccular process on the left valve, the new species is similar to Picardia bassi sp.nov, from which it differs in the prongs on the saccular process and the additional outgrowth on the saccular process of the right valve.
 Flight period. December.
 Distribution. Zimbabwe.
 Etymology. Toponymic name.
description: Published as part of Ustjuzhanin, Petr Ya., Kovtunovich, Vasily N. & Streltzov, Alexander N., 2022, Overview of the species of the genus Picardia Gibeaux, 1994 (Lepidoptera: Pterophoridae) in the world fauna, with description of new species, pp. 12-23 in Ecologica Montenegrina 52 on pages 17-19, DOI: 10.37828/em.2022.52.2, http://zenodo.org/record/13239758
Linear Galerkin-Legendre spectral scheme for a degenerate nonlinear and nonlocal parabolic equation arising in climatology
Creators: name: Płociniczak, Łukasz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: A special place in climatology is taken by the so-called conceptual climate models. These relatively simple sets of differential equations can successfully describe single mechanisms of climate. We focus on one family of such models based on the global energy balance. This gives rise to a degenerate nonlocal parabolic nonlinear partial differential equation for the zonally averaged temperature. We construct a fully discrete numerical method that has an optimal spectral accuracy in space and second order in time. Our scheme is based on the Galerkin formulation of the Legendre basis expansion, which is particularly convenient for this setting. By using extrapolation, the numerical scheme is linear even though the original equation is nonlinear. We also test our theoretical results during various numerical simulations that support the aforementioned accuracy of the scheme.
An optimal load shedding approach for distribution networks with DGs considering capacity deficiency modeling of bulked power supply
Creators: name: Malekpour, A. R.
name: Seifi, A. R.
name: Hesamzadeh, M. R.
name: Hosseinzadeh, N.
Publisher: name: Swinburne
Year: 2024

description: This paper discusses a genetic algorithm (GA) based optimal load shedding that can apply for electrical distribution networks with and without dispersed generators (DG). Also, the proposed method has the ability for considering constant and variable capacity deficiency caused by unscheduled outages in the bulked generation and transmission system of bulked power supply. The genetic algorithm (GA) is employed to search for the optimal load shedding strategy in distribution networks considering DGs in two cases of constant and variable modelling of bulked power supply of distribution networks. Electrical power distribution systems have a radial network and unidirectional power flows. With the advent of dispersed generations, the electrical distribution system has a locally looped network and bidirectional power flows. Therefore, installed DG in the electrical distribution systems can cause operational problems and impact on existing operational schemes. Introduction of DGs in electrical distribution systems has introduced many new issues in operational and planning level. Load shedding as one of operational issue has no exempt. The objective is to minimize the sum of curtailed load and also system losses within the frame-work of system operational and security constraints. The proposed method is tested on a radial distribution system with 33 load points for more practical applications.
Proof Blocks: Autogradable Scaffolding Activities for Learning to Write Proofs
Creators: name: Poulsen, Seth
name: Viswanathan, Mahesh
name: Herman, Geoffrey L.
name: West, Matthew
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Proof Blocks is a software tool which enables students to write proofs by dragging and dropping prewritten proof lines into the correct order. These proofs can be graded completely automatically, enabling students to receive rapid feedback on how they are doing with their proofs. When constructing a problem, the instructor specifies the dependency graph of the lines of the proof, so that any correct arrangement of the lines can receive full credit. This innovation can improve assessment tools by increasing the types of questions we can ask students about proofs, and can give greater access to proof knowledge by increasing the amount that students can learn on their own with the help of a computer.
An Analysis of Multi-hop Iterative Approximate Byzantine Consensus with Local Communication
Creators: name: Ding, Matthew
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Iterative Approximate Byzantine Consensus (IABC) is a fundamental problem of fault-tolerant distributed computing where machines seek to achieve approximate consensus to arbitrary exactness in the presence of Byzantine failures. We present a novel algorithm for this problem, named Relay-IABC, which relies on the usage of a multi-hop relayed messaging system and crytographically secure message signatures. The use of signatures and relays allows the strict necessary network conditions of traditional IABC algorithms to be circumvented. In addition, we show evidence that Relay-IABC achieves faster convergence than traditional algorithms even under these strict network conditions with both theoretical analysis and experimental results.
description: 6 pages. arXiv admin note: text overlap with arXiv:2010.05098
Mechanism of skyrmion condensation and pairing for twisted bi-layer graphene
Creators: name: Jing, Dian
name: Tyner, Alexander Conkey
name: Goswami, Pallab
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: When quantum flavor Hall insulator phases of itinerant fermions are disordered by strong quantum fluctuations, the condensation of skyrmion textures of order parameter fields can lead to superconductivity. In this work, we address the mechanism of skyrmion condensation by considering the scattering between (2+1)-dimensional, Weyl fermions and hedgehog type tunneling configurations of order parameters that violate the skyrmion-number conservation law. We show the quantized, flavor Hall conductivity ($σ^f_{xy}$) controls the degeneracy of topologically protected, fermion zero-modes, localized on hedgehogs, and the overlap between zero-mode eigenfunctions or 't Hooft vertex determines the nature of pairing. We demonstrate the quantum-disordered, flavor Hall insulators with $σ^f_{xy}= 2 N$ lead to different types of charge $2 N e^-$ superconductivity. Some implications for the competition among flavor Hall insulators, the charge $2e^-$ paired states in BCS and pair-density-wave channels, and the composite, charge $4e^-$ superconductors for twisted bilayer graphene are outlined.
description: 8 pages, 1 figure
Hidden dependence of spreading vulnerability on topological complexity
Creators: name: Dekker, Mark M.
name: Schram, Raoul D.
name: Ou, Jiamin
name: Panja, Debabrata
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Many dynamical phenomena in complex systems concern spreading that plays out on top of networks with changing architecture over time -- commonly known as temporal networks. A complex system's proneness to facilitate spreading phenomena, which we abbreviate as its `spreading vulnerability', is often surmised to be related to the topology of the temporal network featured by the system. Yet, cleanly extracting spreading vulnerability of a complex system directly from the topological information of the temporal network remains a challenge. Here, using data from a diverse set of real-world complex systems, we develop the `entropy of temporal entanglement' as a novel and insightful quantity to measure topological complexities of temporal networks. We show that this parameter-free quantity naturally allows for topological comparisons across vastly different complex systems. Importantly, by simulating three different types of stochastic dynamical processes playing out on top of temporal networks, we demonstrate that the entropy of temporal entanglement serves as a quantitative embodiment of the systems' spreading vulnerability, irrespective of the details of the processes. In being able to do so, i.e., in being able to quantitatively extract a complex system's proneness to facilitate spreading phenomena from topology, this entropic measure opens itself for applications in a wide variety of natural, social, biological and engineered systems.
description: 15 pages, 9 figures, to appear in Phys. Rev. E
Accessible and inaccessible quantum coherence in relativistic quantum systems
Creators: name: Harikrishnan, Saveetha
name: Jambulingam, Segar
name: Rohde, Peter P.
name: Radhakrishnan, Chandrashekar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantum coherence of a multipartite system is investigated when some of the parties are moving with uniform acceleration and the analysis is carried out using the single mode approximation. Due to acceleration the quantum coherence is divided into two parts as accessible and inaccessible coherence and the entire analysis has been carried out in the single-mode approximation. First we investigate tripartite systems, considering both GHZ and W-states. We find that the quantum coherence of these states does not vanish in the limit of infinite acceleration, rather asymptoting to a non-zero value. These results hold for both single- and two-qubit acceleration. In the GHZ and W-states the coherence is distributed as correlations between the qubits and is known as global coherence. But quantum coherence can also exist due to the superposition within a qubit, the local coherence. To study the properties of local coherence we investigate separable state. The GHZ state, W-state and separable states contain only one type of coherence. Next we consider the $W \bar{W}$ and star states in which both local and global coherences coexist. We find that under uniform acceleration both local and global coherence show similar qualitative behaviour. Finally we derive analytic expressions for the quantum coherence of N-partite GHZ and W-states for n < N accelerating qubits. We find that the quantum coherence of a multipartite GHZ state falls exponentially with the number of accelerated qubits, whereas for multipartite W-states the quantum coherence decreases only polynomially. We conclude that W-states are more robust to Unruh decoherence and discuss some potential applications in satellite-based quantum communication and black hole physics.
description: 19 pages https://link.aps.org/doi/10.1103/PhysRevA.105.052403
Task-Aware Sampling Layer for Point-Wise Analysis
Creators: name: Lin, Yiqun
name: Chen, Lichang
name: Huang, Haibin
name: Ma, Chongyang
name: Han, Xiaoguang
name: Cui, Shuguang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Sampling, grouping, and aggregation are three important components in the multi-scale analysis of point clouds. In this paper, we present a novel data-driven sampler learning strategy for point-wise analysis tasks. Unlike the widely used sampling technique, Farthest Point Sampling (FPS), we propose to learn sampling and downstream applications jointly. Our key insight is that uniform sampling methods like FPS are not always optimal for different tasks: sampling more points around boundary areas can make the point-wise classification easier for segmentation. Towards this end, we propose a novel sampler learning strategy that learns sampling point displacement supervised by task-related ground truth information and can be trained jointly with the underlying tasks. We further demonstrate our methods in various point-wise analysis tasks, including semantic part segmentation, point cloud completion, and keypoint detection. Our experiments show that jointly learning of the sampler and task brings better performance than using FPS in various point-based networks.
description: 14 pages, 13 figures and 14 tables
Face.evoLVe: A High-Performance Face Recognition Library
Creators: name: Wang, Qingzhong
name: Zhang, Pengfei
name: Xiong, Haoyi
name: Zhao, Jian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: In this paper, we develop face.evoLVe -- a comprehensive library that collects and implements a wide range of popular deep learning-based methods for face recognition. First of all, face.evoLVe is composed of key components that cover the full process of face analytics, including face alignment, data processing, various backbones, losses, and alternatives with bags of tricks for improving performance. Later, face.evoLVe supports multi-GPU training on top of different deep learning platforms, such as PyTorch and PaddlePaddle, which facilitates researchers to work on both large-scale datasets with millions of images and low-shot counterparts with limited well-annotated data. More importantly, along with face.evoLVe, images before & after alignment in the common benchmark datasets are released with source codes and trained models provided. All these efforts lower the technical burdens in reproducing the existing methods for comparison, while users of our library could focus on developing advanced approaches more efficiently. Last but not least, face.evoLVe is well designed and vibrantly evolving, so that new face recognition approaches can be easily plugged into our framework. Note that we have used face.evoLVe to participate in a number of face recognition competitions and secured the first place. The version that supports PyTorch is publicly available at https://github.com/ZhaoJ9014/face.evoLVe.PyTorch and the PaddlePaddle version is available at https://github.com/ZhaoJ9014/face.evoLVe.PyTorch/tree/master/paddle. Face.evoLVe has been widely used for face analytics, receiving 2.4K stars and 622 forks.
description: A short verson is accepted by NeuroComputing (https://www.sciencedirect.com/science/article/pii/S0925231222005057?via%3Dihub). Primary corresponding author is Dr. Jian Zhao
Explainable artificial intelligence (XAI) in deep learning-based medical image analysis
Creators: name: van der Velden, Bas H. M.
name: Kuijf, Hugo J.
name: Gilhuijs, Kenneth G. A.
name: Viergever, Max A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: With an increase in deep learning-based methods, the call for explainability of such methods grows, especially in high-stakes decision making areas such as medical image analysis. This survey presents an overview of eXplainable Artificial Intelligence (XAI) used in deep learning-based medical image analysis. A framework of XAI criteria is introduced to classify deep learning-based medical image analysis methods. Papers on XAI techniques in medical image analysis are then surveyed and categorized according to the framework and according to anatomical location. The paper concludes with an outlook of future opportunities for XAI in medical image analysis.
description: Submitted for publication. Comments welcome by email to first author