cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
SEA: A Scalable Entity Alignment System
Creators: name: Wu, Junyang
name: Li, Tianyi
name: Chen, Lu
name: Gao, Yunjun
name: Wei, Ziheng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Entity alignment (EA) aims to find equivalent entities in different knowledge graphs (KGs). State-of-the-art EA approaches generally use Graph Neural Networks (GNNs) to encode entities. However, most of them train the models and evaluate the results in a fullbatch fashion, which prohibits EA from being scalable on largescale datasets. To enhance the usability of GNN-based EA models in real-world applications, we present SEA, a scalable entity alignment system that enables to (i) train large-scale GNNs for EA, (ii) speed up the normalization and the evaluation process, and (iii) report clear results for users to estimate different models and parameter settings. SEA can be run on a computer with merely one graphic card. Moreover, SEA encompasses six state-of-the-art EA models and provides access for users to quickly establish and evaluate their own models. Thus, SEA allows users to perform EA without being involved in tedious implementations, such as negative sampling and GPU-accelerated evaluation. With SEA, users can gain a clear view of the model performance. In the demonstration, we show that SEA is user-friendly and is of high scalability even on computers with limited computational resources.
description: SIGIR'23 Demo Track
Dorka, Gertrud: Die vor- und frühgeschichtlichen Altertümer des Bezirks Neukölln
Creators: name: Nowothnig, Walter
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Dorka, Gertrud: Die vor- und frühgeschichtlichen Altertümer des Bezirks Neukölln. Herausgegeben als Beitrag zum 600jährigen Jubiläum von Rixdorf-Neukölln. Verlag Mier und Glasemann K. G., Berlin 1961. 154 Seit., 13 Abb. i. Text, 64 Tat. und zwei Fundkarten
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 31 (1962): Nachrichten aus Niedersachsens Urgeschichte
Subdivisions of K_{r+2} in Graphs of Average Degree at Least r+epsilon and Large but Constant Girth
Creators: name: Kühn, Daniela
name: Osthus, Deryk Simeon
Publisher: name: Humboldt-Universität zu Berlin
Year: 2004
Subjects: subject: 510 Mathematik
subject: 004 Informatik

description: This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Conformal field theory of Painlevé VI
Creators: name: Gamayun, O.
name: Iorgov, N.
name: Lisovyy, O.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Generic Painlevé VI tau function τ(t) can be interpreted as four-point correlator of primary fields of arbitrary dimensions in 2D CFT with c=1. Using AGT combinatorial representation of conformal blocks and determining the corresponding structure constants, we obtain full and completely explicit expansion of τ(t) near the singular points. After a check of this expansion, we discuss examples of conformal blocks arising from Riccati, Picard, Chazy and algebraic solutions of Painlevé VI.
description: 24 pages, 1 figure; v3: added refs and minor clarifications, few typos corrected; to appear in JHEP
Axionic extension of the Einstein-Dirac-aether theory: Degeneracy removal with respect to shear of the aether flow
Creators: name: Efremova, Anna O.
name: Balakin, Alexander B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider dynamics of the quartet of interacting cosmic substrata, which includes the dynamic aether, presented by the unit timelike vector field, the axionic dark matter, described by the pseudoscalar field, the spinor field associated with fermion particles, and the gravity field. The extended set of master equations is derived based on the idea that the potential of the axion field to be the function of seven arguments. The first one is, standardly, the pseudoscalar field; the second and third arguments are the fundamental spinor invariant and pseudoinvariant; the fourth and fifth ones are the aether-axion cross-invariants and cross-pseudoinvariants; the sixth argument is the expansion scalar, and the seventh one is the square of tensor of the shear of the aether flow. The complete set of master equations is derived and prepared for analysis.
description: 3 pages, 0 figures, Short communication based on the talk presented on the Fifth International Winter School Seminar on Gravitation, Astrophysics and Cosmology Petrov Readings 2022, Kazan, Russia
MAHMUDXO'JA BEHBUDIY MA'RIFATPARVARLIK HARAKATI
Creators: name: Tursunov, Ahliddin
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada jadidchilik harakatining yorqin vakili Mahmudxo'ja Behbudiy olib borgan publitsistik faoliyat orqali ma'rifatparvarlikning qay darajada targ'ib etilgani tahlil qilinadi. Davriy nashrlarning ma'rifatparvarlikda tutgan o'rni haqida so'z yuritiladi.
Theoretical estimate of the $D^* \to Dπ$ decay rate
Creators: name: Becirevic, Damir
name: Sanfilippo, Francesco
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the results of our lattice QCD study of the $g_{D^* Dπ}i$ coupling, relevant to the $D^\ast \to Dπ$ decay. Our computation is made on the gauge field configurations that include $N_f=2$ dynamical light quarks by using the twisted mass QCD action. From the results obtained at four different lattice spacings we were able to take for the first time the continuum limit of this quantity computed on the lattice. Our final value, $g_c=0.53(3)(3)$, leads to $Γ(D^{\ast +}\to \bar{D}^0 π^+)= (50\pm 5\pm 6)$ keV, and is in good agreement with the experimental results for the width of the charged $D^\ast$-meson.
description: 11 pages, 4 figures [published version: typos corrected, results unchanged]
Schmidt, Berthold: Die späte Völkerwanderungszeit in Mitteldeutschland.
Creators: name: Nowothnig, Walter
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Schmidt, Berthold: Die späte Völkerwanderungszeit in Mitteldeutschland. Mit einem anthropologischen Beitrag von L. Schott. Veröffentlichungen d. Landesmuseums f. Vorgeschichte in Halle, Heft 18, 1961. Verlag Max Niemeyer, Halle (Saale). 236 Seit., 64 Textabb., 86Tafn. u. 4 Ktn.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 31 (1962): Nachrichten aus Niedersachsens Urgeschichte
Boosting distributional copula regression
Creators: name: Hans, Nicolai
name: Klein, Nadja
name: Faschingbauer, Florian
name: Schneider, Michael
name: Mayr, Andreas
Publisher: name: Humboldt-Universität zu Berlin
Year: 2022
Subjects: subject: 510 Mathematik
subject: 519 Wahrscheinlichkeiten und angewandte Mathematik

description: Capturing complex dependence structures between outcome variables (e.g., study endpoints) is of high relevance in contemporary biomedical data problems and medical research. Distributional copula regression provides a flexible tool to model the joint distribution of multiple outcome variables by disentangling the marginal response distributions and their dependence structure. In a regression setup, each parameter of the copula model, that is, the marginal distribution parameters and the copula dependence parameters, can be related to covariates via structured additive predictors. We propose a framework to fit distributional copula regression via model‐based boosting, which is a modern estimation technique that incorporates useful features like an intrinsic variable selection mechanism, parameter shrinkage and the capability to fit regression models in high‐dimensional data setting, that is, situations with more covariates than observations. Thus, model‐based boosting does not only complement existing Bayesian and maximum‐likelihood based estimation frameworks for this model class but rather enables unique intrinsic mechanisms that can be helpful in many applied problems. The performance of our boosting algorithm for copula regression models with continuous margins is evaluated in simulation studies that cover low‐ and high‐dimensional data settings and situations with and without dependence between the responses. Moreover, distributional copula boosting is used to jointly analyze and predict the length and the weight of newborns conditional on sonographic measurements of the fetus before delivery together with other clinical variables.
Dieter Salzmann, Untersuchungen zu den antiken Kieselmosaiken, von den Anfängen bis zum Beginn der Tesseratechnik
Creators: name: Daszewski, Wiktor Andrzej
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Dieter Salzmann, Untersuchungen zu den antiken Kieselmosaiken, von den Anfängen bis zum Beginn der Tesseratechnik. Archäologische Forschungen 10. Gebr. Mann Verlag, Berlin 1982. 139 pages, 100 black-white plates, 2 colour plates, 2 maps
description: Bonner Jahrbücher, Bd. 186.1986: Bonner Jahrbücher
Development journalism; a prerequisite for rural transformation in Ebonyi State, Nigeria
Creators: name: Obi, Anthony
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 470199
subject: Communication and media studies not elsewhere classified

description: In the Journalism industry, the issue of development often raises concern among communication experts and scholars on best ways to effectively utilize the powers and potentialities inherent in the mass media to engender development, particularly in the rural areas in Nigeria. This paper which is an analytical study is hinged on Development Media Theory because of its development-oriented value. Almost all sectors in the rural areas remained priority in the development agenda Such priorities should be conspicuously seen in the areas of health, education, economic, social, cultural and basic social amenities like electricity, good road networks and pipe born water. Therefore, the major thrust of this paper was to determine the utilization of the mass media to promote development that could ensure rapid rural transformation. Effective and multi-dimensional information system was found to possess the magic wand for rural development in Nigeria. The paper adopted conceptual and analytical approach which entail critical review of extant related literature on issues of development journalism in Nigeria with a view to analyzing the situation on ground and proffer solutions to some of the nagging problems. From the analysis, it was discovered that the mass media, especially local and some national outfits have not lived up to expectation in propagating development-oriented journalism that can foster rural transformation in Nigeria, despite its enormous powers when Journal of Media, Communication and Languages Vol. 8 No.1 April, 2021 compared to their foreign media counterparts which put off all odds to get to the rural areas in search of rural-based news either for development purposes or to paint us in bad light.
Hans Schönberger und Hans-Günther Simon, Die Kastelle in Altenstadt
Creators: name: Haalebos, Jan Kees
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Hans Schönberger und Hans-Günther Simon, Die Kastelle in Altenstadt. Mit Beiträgen von D. Baatz, H.-G. Bachmann und H. Polenz. Limesforschungen 22. Gebr. Mann Verlag, Berlin 1983. 201 Seiten, 28 Abbildungen, 73 Tafeln
description: Bonner Jahrbücher, Bd. 186.1986: Bonner Jahrbücher
Jürgen Oldenstein, Fundindex zu ’Der obergermanisch-rätische Limes des Römerreiches'
Creators: name: Baatz, Dietwulf
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Jürgen Oldenstein, Fundindex zu ’Der obergermanisch-rätische Limes des Römerreiches'. Verlag Philipp von Zabern, Mainz 1982. 156 Seiten mit 2 Abbildungen
description: Bonner Jahrbücher, Bd. 186.1986: Bonner Jahrbücher
Nonlinear interaction of the axion field with dynamic aether and SU(2) symmetric gauge field in the anisotropic Universe
Creators: name: Balakin, Alexander B.
name: Kiselev, Gleb B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Based on the concept of the dynamic aether emergence as a result of spontaneous polarization of the color aether, we consider the SU(2) symmetric theory of interaction of the gauge and axion fields in the framework of anisotropic cosmological model of the Bianchi-I type. We focus on the analysis of the non-Abelian analog of the U(1) symmetric model of axionically induced generation of the electric field in a magnetized medium.
description: 3 pages, 0 Figures, Short communication based on the talk presented on the Fifth International Winter School Seminar on Gravitation, Astrophysics and Cosmology Petrov Readings 2022, Kazan, Russia
Elastic analysis of irregularly or sparsely sampled curves
Creators: name: Steyer, Lisa Maike
name: Stöcker, Almond
name: Greven, Sonja
Publisher: name: Humboldt-Universität zu Berlin
Year: 2022
Subjects: subject: 510 Mathematik

description: We provide statistical analysis methods for samples of curves in two or more dimensions, where the image, but not the parameterization of the curves, is of interest and suitable alignment/registration is thus necessary. Examples are handwritten letters, movement paths, or object outlines. We focus in particular on the computation of (smooth) means and distances, allowing, for example, classification or clustering. Existing parameterization invariant analysis methods based on the elastic distance of the curves modulo parameterization, using the square‐root‐velocity framework, have limitations in common realistic settings where curves are irregularly and potentially sparsely observed. We propose using spline curves to model smooth or polygonal (Fréchet) means of open or closed curves with respect to the elastic distance and show identifiability of the spline model modulo parameterization. We further provide methods and algorithms to approximate the elastic distance for irregularly or sparsely observed curves, via interpreting them as polygons. We illustrate the usefulness of our methods on two datasets. The first application classifies irregularly sampled spirals drawn by Parkinson's patients and healthy controls, based on the elastic distance to a mean spiral curve computed using our approach. The second application clusters sparsely sampled GPS tracks based on the elastic distance and computes smooth cluster means to find new paths on the Tempelhof field in Berlin. All methods are implemented in the R‐package “elasdics” and evaluated in simulations.
Tan contact and universal high momentum behavior of the fermion propagator in the BCS-BEC crossover
Creators: name: Boettcher, Igor
name: Diehl, Sebastian
name: Pawlowski, Jan M.
name: Wetterich, Christof
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive the universal high momentum factorization of the fermion self-energy in the BCS-BEC crossover of ultracold atoms using nonperturbative quantum field theoretical methods. This property is then employed to compute the Tan contact as a function of interaction strength, temperature, chemical potential and Fermi momentum. We clarify the mechanism of the factorization from an analysis of the self-consistent Schwinger-Dyson equation for the fermion propagator, and compute the perturbative contact on the BCS and BEC sides within this framework. A Functional Renormalization Group approach is then put forward, which allows to determine the contact over the whole crossover and, in particular, for the Unitary Fermi gas. We present numerical results from an implementation of the Renormalization Group equations within a basic truncation scheme.
description: 19 pages, 11 figures, published version
Evolution of gliding in squirrel-related rodents (Mammalia: Sciuromorpha) did not induce a new optimum on the cortical thickness of the scapular glenoid fossa
Creators: name: Berghäuser, Timo
name: Nyakatura, John
name: Wölfer, Jan
Publisher: name: Humboldt-Universität zu Berlin
Year: 2022
Subjects: subject: 590 Tiere (Zoologie)

description: Many of the squirrel‐related rodents (i.e., Sciuromorpha) are tree‐dwelling species known to be very agile climbers. This taxon also includes the most diverse clade of gliding (aerial) mammals that likely descended from a non‐gliding arboreal ancestor and evolved a patagium (i.e., a gliding membrane) to increase gliding performance. Glides can cover distances of up to 150 m and landing is typically accomplished by stalling the patagium to reduce impact velocity. It remains unclear if this behavior suffices to keep stresses on the locomotor apparatus similar to those experienced by their arboreal relatives or whether gliding behavior increases landing forces and stresses. The sparsely available support reaction force data are ambiguous, but bone microstructure is highly adaptable to changes in loading regime and likely provides insights into this question. Using μCT scans, we compared the cortical thickness of the glenoid fossa of the shoulder joint between arboreal and aerial Sciuromorpha using evolutionary model comparison, while also accounting for regional differences of the glenoid fossa. We did not find any differences between these locomotor behaviors, irrespective of the glenoid region. These findings agree with previous analyses of the microstructure of the femur in Sciuromorpha. We discuss different aspects that could explain the similarity in cortical thickness. According to our analysis of glenoid cortical thickness the loading regime appears not to have changed after the evolution of gliding locomotion, likely due to adjustments in landing performance.
Positivity conjectures for Kazhdan-Lusztig theory on twisted involutions: the universal case
Creators: name: Marberg, Eric
Publisher: name: arXiv
Year: 2012
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Let $(W,S)$ be a Coxeter system and let $w \mapsto w^*$ be an involution of $W$ which preserves the set of simple generators $S$. Lusztig and Vogan have recently shown that the set of twisted involutions (i.e., elements $w \in W$ with $w^{-1} = w^*$) naturally generates a module of the Hecke algebra of $(W,S)$ with two distinguished bases. The transition matrix between these bases defines a family of polynomials $P^σ_{y,w}$ which one can view as "twisted" analogues of the much-studied Kazhdan-Lusztig polynomials of $(W,S)$. The polynomials $P^σ_{y,w}$ can have negative coefficients, but display several conjectural positivity properties of interest. This paper reviews Lusztig's construction and then proves three such positivity properties for Coxeter systems which are universal (i.e., having no braids relations), generalizing previous work of Dyer. Our methods are entirely combinatorial and elementary, in contrast to the geometric arguments employed by Lusztig and Vogan to prove similar positivity conjectures for crystallographic Coxeter systems.
description: 30 pages; v2: some corrections, revisions, updated references; v3: some minor further corrections and reference updates; v4: minor correction to part (c) of proof of Theorem 3.22, some typos fixed, final version
Optimising hadron collider simulations using matrix element neural networks
Creators: name: Moodie, Ryan
Publisher: name: Zenodo
Year: 2022

description: Phenomenological studies of high-multiplicity scattering processes at collider experiments present a substantial theoretical challenge and are increasingly important ingredients in experimental measurements. We investigate the use of neural networks to approximate matrix elements for these processes, studying the case of loop-induced diphoton production through gluon fusion. We train neural network models on one-loop amplitudes from the NJet library and interface them with the Sherpa Monte Carlo event generator to provide the matrix element within a realistic hadronic collider simulation. Computing some standard observables with the models and comparing to conventional techniques, we find excellent agreement in the distributions and a reduced simulation time by a factor of 30.
O(N)-Universality Classes and the Mermin-Wagner Theorem
Creators: name: Codello, A.
name: D'Odorico, G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study how universality classes of O(N)-symmetric models depend continuously on the dimension d and the number of field components N. We observe, from a renormalization group perspective, how the implications of the Mermin-Wagner-Hohenberg theorem set in as we gradually deform theory space towards d=2. For fractal dimension in the range 2
description: 5 pages, 5 figures; accepted for publication in PRL
High rates of therapeutic changes in patients with psoriatic arthritis receiving treatment with disease-modifying antirheumatic drugs: A cross-sectional study
Creators: name: Behrens, Frank
name: Rech, Jürgen
name: Thaçi, Diamant
name: Zinke, Silke
name: Rothnie, Kieran J
name: Daamen, Carolin
name: Leipe, Jan
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: To characterize treatment patterns for patients with psoriatic arthritis (PsA) currently receiving any disease-modifying antirheumatic drug (DMARD). The Strategy for Psoriatic Arthritis In Germany (SPAIG) study was a retrospective observational study conducted from May to November 2017 at 46 rheumatology centers. Current and previous treatment data were collected at a single visit from adult patients with PsA and psoriasis who received DMARD treatment for ≥6 of the previous 12 months. The primary outcome was the proportion of patients receiving a biologic DMARD (bDMARD). Multinomial logistic regression analysis was used to evaluate associations between current characteristics and initial choice of therapy. Mean age of the 316 patients was 55.1 years and mean PsA disease duration was 9.9 years. PsA activity was generally comparable across treatment groups. In this cohort, 57.3% of patients were currently treated with bDMARDs, 37.7% with conventional synthetic DMARDs, and 4.4% with targeted synthetic DMARDs. Almost half (48.4%) of patients reported DMARD modifications in the previous 12 months. Specific comorbidities and patient/disease characteristics were associated with initial therapy. DMARD treatment of PsA is frequently modified, suggesting the need for more effective therapies and assessment tools.
Observational constraints on the metagalactic Ly$α$ photon scattering rate at high redshift
Creators: name: Meiksin, Avery
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The scattering of Ly$α$ photons from the first radiating sources in the Universe plays a pivotal role in 21-cm radio detections of Cosmic Dawn and the Epoch of Reionization through the Wouthuysen-Field effect. New data from JWST show the Ly$α$ photon scattering rate exceeds that required to decouple the intergalactic hydrogen spin temperature from that of the Cosmic Microwave Background up to $z\sim14$ and render the neutral hydrogen visible over the main redshift range expected for the Epoch of Reionization.
description: Published in the Research Notes of the American Astronomical Society; 3 pages, 1 figure
Native forest metacommunity structures in Uruguay shaped by novel land-use types in their surroundings
Creators: name: Ramírez, Leonardo
name: Säumel, Ina
Publisher: name: Humboldt-Universität zu Berlin
Year: 2022
Subjects: subject: 570 Biologie

description: We explore the effect of land‐use change from extensively used grasslands to intensified silvi‐ and agricultural monocultures on metacommunity structure of native forests in Uruguay. We integrated methods from metacommunity studies, remote sensing, and landscape ecology to explore how woody species distribution was influenced by land‐use change from local to regional scale. We recorded richness and composition of adult and juvenile woody species from 32 native forests, created land‐use maps from satellite image to calculate spatial metrics at landscape, class, and patch levels. We also analyzed the influence of land use pattern, climate, topography, and geographic distance between sites (d) on metacommunity, and created maps to visualize species richness and (dis)similarity between communities across the country. Woody species communities were distributed in a discrete pattern across Uruguay. Precipitation and temperature seasonality shaped species distribution pattern. Species richness and community dissimilarity increased from West to East. Latitude did not influence these patterns. Number of patches, landscape complexity, and interspersion and juxtaposition indexes determine woody species distribution at landscape level. Increasing areas covered by crops and timber plantation reduced species richness and increased community dissimilarity. The spatial metrics of native forest fragments at patch level did not influence metacommunity structure, species richness, and community dissimilarity. In conclusion, Uruguayan native forests display a high range of dissimilarity. Pressure of neighborhood land uses was the predominant factor for species assemblages. Conserving landscape structures that assure connectivity within and among native forest patches is crucial. On sites with rare target species, the creation of alliances between governmental institution and landowner complemented by incentives for biodiversity conservation provides opportunities to advance in species protection focused on those less tolerant to land‐use change.
Aubry sets for weakly coupled systems of Hamilton--Jacobi equations
Creators: name: Davini, Andrea
name: Zavidovique, Maxime
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We introduce a notion of Aubry set for weakly coupled systems of Hamilton--Jacobi equations on the torus and characterize it as the region where the obstruction to the existence of globally strict critical subsolutions concentrates. As in the case of a single equation, we prove the existence of critical subsolutions which are strict and smooth outside the Aubry set. This allows us to derive in a simple way a comparison result among critical sub and supersolutions with respect to their boundary data on the Aubry set, showing in particular that the latter is a uniqueness set for the critical system. We also highlight some rigidity phenomena taking place on the Aubry set.
description: 35 pages v.2 the introduction has been rewritten and shortened. Some proofs simplified. Corrections and references added. Corollary 5.3 added stating antisymmetry of the Ma\~n\'e matrix on points of the Aubry set. Section 6 contains a new examples
Persistent current induced by quantum light
Creators: name: Kibis, O. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: It is demonstrated that the strong coupling of an electron gas to photons in systems with broken time-reversal symmetry results in bound electron-photon states which cannot be backscattered elastically. As a consequence, the electron gas can flow without dissipation. This quantum macroscopic phenomenon leads to the unconventional superconductivity which is analyzed theoretically for a two-dimensional electron system in a semiconductor quantum well exposed to an in-plane magnetic field.
description: 6 pages, 2 figures; published version
Individual rights and the environmental public interest: A comparison of German and Chinese approaches to environmental litigation
Creators: name: Campbell, Nicholas
Publisher: name: Humboldt-Universität zu Berlin
Year: 2022
Subjects: subject: 340 Recht

description: This article compares the framework of environmental public interest litigation in China to the individualized system of judicial review in Germany. It shows that environmental reform requires modern States such as Germany and China to consider certain objective criteria related to the public interest. These criteria are objective insofar as they relate to certain empirically measurable conditions that have arisen in the context of industrialization, and they relate to the public interest insofar as their treatment requires substantial intervention from the State to ensure that economic practices do not endanger the basic natural preconditions of human life. Between the law's instrumentality to the ‘normal’ functioning of modern industrial society and reforms enacted in the public interest, environmental public interest litigation in Germany and China stands out as it implies a possibility for various stakeholders outside of the administrative structure to promote environmental interests. This returns a degree of agency to environmental stakeholders in helping to practically determine the transition towards sustainability. The substantiveness of environmental litigation is assessed, first, in relation to its openness, examining which social actors possess standing to litigate in the public interest, and, second, in relation to its scope, referring to which acts become contestable through the framework of public interest litigation. The court cases, academic debates and legislative reforms surrounding environmental public interest litigation in Germany and China reflect the decisive features of their respective legal ideologies, but they are also an area within which the limits of the dominant legal ideology are tested.
Distance weighted city growth
Creators: name: Rybski, Diego
name: Ros, Anselmo Garcia Cantu
name: Kropp, Jürgen P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Urban agglomerations exhibit complex emergent features of which Zipf's law, i.e.\ a power-law size distribution, and fractality may be regarded as the most prominent ones. We propose a simplistic model for the generation of city-like structures which is solely based on the assumption that growth is more likely to take place close to inhabited space. The model involves one parameter which is an exponent determining how strongly the attraction decays with the distance. In addition, the model is run iteratively so that existing clusters can grow (together) and new ones can emerge. The model is capable of reproducing the size distribution and the fractality of the boundary of the largest cluster. While the power-law distribution depends on both, the imposed exponent and the iteration, the fractality seems to be independent of the former and only depends on the latter. Analyzing land-cover data we estimate the parameter-value $γ\approx 2.5$ for Paris and it's surroundings.
description: 6 pages, 6 figures
Recovery of aircraft vertical motion profiles from incomplete data : an application of the method of splines
Creators: name: Purser, James R.
name: Zhu, Yanqiu
name: Ballish, Bradley A.
Publisher: name: U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Weather Service, National Centers for Environmental Prediction
Year: 2014
Subjects: subject: Numerical weather forecasting--United States
subject: Aeronautics in meteorology--Mathematical models
subject: Weather forecasting--Simulation methods

description: It has been determined that the biases in temperature reports from Aircraft Meteorological Data Relay (AMDAR) measurements exhibit a dependence, among other predictors, upon the vertical component, dh/dt, of the aircraft motion. While some aircraft report frequently and to the nearest second, and so provide data that are easily and directly applicable to the bias-correction problem, some other aircraft report infrequently and only to within the nearest minute, which makes it much harder to deduce their instantaneous vertical velocity component at each of their reporting times during their irregular ascending or descending flight trajectories. The problem of interpolating the likely vertical motion from such incomplete data seems suited to a solution by application of the method of numerical splines, which we describe in this short note.
Dependence of spin dephasing on initial spin polarization in a high-mobility two-dimensional electron system
Creators: name: Stich, Dominik
name: Zhou, J.
name: Korn, Tobias
name: Schulz, Robert
name: Schuh, Dieter
name: Wegscheider, Werner
name: Wu, M.
name: Schüller, Christian
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: 530 Physik

description: We have studied the spin dynamics of a high-mobility two-dimensional electron system in a GaAs/Al0.3Ga0.7As single quantum well by time-resolved Faraday rotation and time-resolved Kerr rotation in dependence on the initial degree of spin polarization, P, of the electrons. By increasing the initial spin polarization from the low-P regime to a significant P of several percent, we find that the spin dephasing time, T2 *, increases from about 20 to 200 ps. Moreover, T2 * increases with temperature at small spin polarization but decreases with temperature at large spin polarization. All these features are in good agreement with theoretical predictions by Weng and Wu Phys. Rev. B 68, 075312 2003. Measurements as a function of spin polarization at fixed electron density are performed to further confirm the theory. A fully microscopic calculation is performed by setting up and numerically solving the kinetic spin Bloch equations, including the Dyakonov- Perel and the Bir-Aronov-Pikus mechanisms, with all the scattering explicitly included. We reproduce all principal features of the experiments, i.e., a dramatic decrease of spin dephasing with increasing P and the temperature dependences at different spin polarizations.
Brunn, Wilhelm Albert von: Bronzezeitliche Hortfunde
Creators: name: Jacob-Friesen, Karl Hermann
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Brunn, Wilhelm Albert von: Bronzezeitliche Hortfunde. Teil 1. Die Hortfunde der frühen Bronzezeit aus Sachsen-Anhalt, Sachsen und Thüringen. Band 7 der Schriften der Sektion für Vor- und Frühgeschichte der Deutschen Akademie der Wissenschaften zu Berlin. Berlin (Akademie-Verlag) 1959. 84 Seiten mit 100 Lichtdrucktaf., 3 Karten und 2 Tabellen. Brosch.
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 29 (1960): Nachrichten aus Niedersachsens Urgeschichte
Variational approach to the time-dependent Schrödinger-Newton equations
Creators: name: Manfredi, Giovanni
name: Hervieux, Paul-Antoine
name: Haas, Fernando
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Using a variational approach based on a Lagrangian formulation and Gaussian trial functions, we derive a simple dynamical system that captures the main features of the time-dependent Schrödinger-Newton equations. With little analytical or numerical effort, the model furnishes information on the ground state density and energy eigenvalue, the linear frequencies, as well as the nonlinear long-time behaviour. Our results are in good agreement with those obtained through analytical estimates or numerical simulations of the full Schrödinger-Newton equations.
description: 14 pages, 7 figures
Ausgrabungen auf Autobahngelände im Landkreis Verden
Creators: name: Deichmüller, Jürgen
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 31 (1962): Nachrichten aus Niedersachsens Urgeschichte
Chelodina reimanni Merauke River
Creators: name: Georges, Arthur
name: Adams, Mark
name: McCORD, William
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Testudines
Chelidae
Chelodina
Chelodina reimanni

description: Chelodina reimanni:
Merauke River, West Irian [c. 8°28'S 140°20'E, N = 11].
description: Published as part of Georges, Arthur, Adams, Mark & McCORD, William, 2002, Electrophoretic delineation of species boundaries within the genus Chelodina (Testudines: Chelidae) of Australia, New Guinea and Indonesia, pp. 401-421 in Zoological Journal of the Linnean Society 134 (4) on page 407, DOI: 10.1046/j.1096-3642.2002.00007.x, http://zenodo.org/record/5434026
МИЛЛИЙ МУЗЫКАЛЫҚ ДӘСТҮРЛЕР – ХАЛЫҚТЫҢ ЖАНЛЫ ДАЎЫСЫ, ОНЫҢ ТАРИЙХЫ, ҚАЙҒЫСЫ ҲӘМ ДЕ ҚУЎАНЫШЛАРЫ СЫҢҒЫРЛАҒАН ЖЫЛНАМАСЫ
Creators: name: Маткаримова, Г.
name: Бекполатова, Алтынай
Publisher: name: Zenodo
Year: 2023

description: Xalq musiqasi anʼanasi zamonaviy musiqa sanʼatining buguni va kelajagi asosida shakllangan boʻlib, maktablarda musiqa taʼlimining maqsadi musiqachilarga musiqa oʻrgatish, ularda maʼnaviyat va hissiyot tuygʻularini rivojlantirishdan iborat.
PuPt2In7: a computational and experimental investigation
Creators: name: Rhee, H. B.
name: Ronning, F.
name: Zhu, J. -X.
name: Bauer, E. D.
name: Mitchell, J. N.
name: Tobash, P. H.
name: Scott, B. L.
name: Thompson, J. D.
name: Jiang, Yu
name: Booth, C. H.
name: Pickett, W. E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Flux-grown single crystals of PuPt$_2$In$_7$ are characterized and found to be both non-superconducting and non-magnetic down to 2 K. The Sommerfeld specific heat coefficient of $\sim 250$ mJ/mol K$^2$ indicates heavy fermion behavior. We report the results of generalized gradient approximation (GGA)+$U$ calculations of PuPt$_2$In$_7$ and as yet unsynthesized isovalent PuPt$_2$Ga$_7$. The strength of the $c$-$f$ hybridization of PuPt$_2$In$_7$ is similar to the PuCoIn$_5$ superconductor. The bare and $f$-weighted susceptibility within the constant-matrix-element approximation is calculated, showing a maximum along the $q_z$ direction at $q_x = q_y = 0.5$. A similar and slightly stronger maximum is also found in the structurally related heavy-fermion materials PuCoGa$_5$ and PuCoIn$_5$. The absence of superconductivity in PuPt$_2$In$_7$ is examined based on the results of our calculations.
description: Version accepted for publication
Infinite families of (non)-Hermitian Hamiltonians associated with exceptional $X_m$ Jacobi polynomials
Creators: name: Midya, Bikashkali
name: Roy, Barnana
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Classical Analysis and ODEs (math.CA)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Using an appropriate change of variable, the Schrödinger equation is transformed into a second-order differential equation satisfied by recently discovered Jacobi type $X_m$ exceptional orthogonal polynomials. This facilitates the derivation of infinite families of exactly solvable Hermitian as well as non-Hermitian trigonometric Scarf potentials and finite number of Hermitian and infinite number of non-Hermitian PT-symmetric hyperbolic Scarf potentials. The bound state solutions of all these potentials are associated with the aforesaid exceptional orthogonal polynomials. These infinite families of potentials are shown to be extensions of the conventional trigonometric and hyperbolic Scarf potentials by the addition of some rational terms characterized by the presence of classical Jacobi polynomials. All the members of a particular family of these 'rationally extended polynomial-dependent' potentials have the same energy spectrum and possess translational shape invariant symmetry. The obtained non-Hermitian trigonometric Scarf potentials are shown to be quasi-Hermitian in nature ensuring the reality of the associated energy spectra.
description: Revised version. Accepted in J. Phys. A
Der Bronzefund von Barrien-Bülten im Kreise Grafschaft Hoya
Creators: name: Nowothnig, Walter
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 31 (1962): Nachrichten aus Niedersachsens Urgeschichte
Axion electrodynamics on the Bianchi spacetime platform: Fingerprints of shear of the aether velocity
Creators: name: Shakirzyanov, Amir F.
name: Balakin, Alexander B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the framework of axionically extended Einstein-Maxwell-aether theory we study the structure of the electromagnetic field allowed by the anisotropic cosmological spacetime platforms associated with the Bianchi models. These models guarantee that the aether velocity possesses the shear, and we focus on its role in the evolution of the axion-photon systems. In this short note we discuss the extended master equations obtained under the assumption that the square of the shear tensor is included in the potential of the axion field.
description: 3 pages, 0 Figures, Short communication based on the talk presented on the Fifth International Winter School-Seminar on Gravitation, Astrophysics and Cosmology Petrov Readings -2022, Kazan, Russia
Audience recognition: the determinants of academics’ media impact
Creators: name: Lu, Hsiao-Han
Publisher: name: Imperial College London
Year: 2018

description: This thesis examines the media impact of academics, and in particular focuses on the conditions of research publication being covered in the news and the pathways that academics become media stars (celebrity). University actors are increasingly required to demonstrate research impact on society. The first chapter provides an overview of the changing landscape of the ‘broader impact’ and highlights the role of the media as an intermediary in delivering scientific research across the boundary between academia and the public. The second chapter provides an overview of the quantitative data in the two studies. Study 1 seeks to explain the role of research quality signals, as evidenced by journal prestige, in whether a press release is being picked up by the media. This study explores the tension between research quality and public resonance in explaining which academic publications are covered in the news. Results show how various dimensions of public resonance may strengthen or weaken the importance of research quality as a signal. Specifically, it finds that there is a substitution effect between the signal of research quality and the unexpectedness of the research content, and a complementarity effect between the research quality signal and contribution relevance of the research in explaining the media attention of academic articles. Study 2 explores the question of through what pathways do academics become celebrities in the media. The results show that academics who achieve ‘research’ celebrity status are discovered – based on the quality of their research – rather than manufactured, whereas academics who excel at commentary in the media tend to be manufactured rather than discovered. My findings also show that it is difficult for academics who excel in achieving one type of media coverage to switch to achieving the other type. Only academics who are both academically excellent and who actively push for media attention tend to become celebrities both in terms of research coverage and public commentary.
A New Multi-Dimensional General Relativistic Neutrino Hydrodynamics Code of Core-Collapse Supernovae III. Gravitational Wave Signals from Supernova Explosion Models
Creators: name: Mueller, Bernhard
name: Janka, Hans-Thomas
name: Marek, Andreas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a detailed theoretical analysis of the gravitational-wave (GW) signal of the post-bounce evolution of core-collapse supernovae (SNe), employing for the first time relativistic, two-dimensional (2D) explosion models with multi-group, three-flavor neutrino transport based on the ray-by-ray-plus approximation. The waveforms reflect the accelerated mass motions associated with the characteristic evolutionary stages that were also identified in previous works: A quasi-periodic modulation by prompt postshock convection is followed by a phase of relative quiescence before growing amplitudes signal violent hydrodynamical activity due to convection and the standing accretion shock instability during the accretion period of the stalled shock. Finally, a high-frequency, low-amplitude variation from proto-neutron star (PNS) convection below the neutrinosphere appears superimposed on the low-frequency trend associated with the aspherical expansion of the SN shock after the onset of the explosion. Relativistic effects in combination with detailed neutrino transport are shown to be essential for quantitative predictions of the GW frequency evolution and energy spectrum, because they determine the structure of the PNS surface layer and its characteristic g-mode frequency. Burst-like high-frequency activity phases, correlated with sudden luminosity increase and spectral hardening of electron (anti-)neutrino emission for some 10ms, are discovered as new features after the onset of the explosion. They correspond to intermittent episodes of anisotropic accretion by the PNS in the case of fallback SNe. We find stronger signals for more massive progenitors with large accretion rates. The typical frequencies are higher for massive PNSs, though the time-integrated spectrum also strongly depends on the model dynamics.
description: 22 pages, 16 figures, published in ApJ
Exact ABJM Partition Function from TBA
Creators: name: Putrov, Pavel
name: Yamazaki, Masahito
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We report on the exact computation of the S^3 partition function of U(N)_k\times U(N)_{-k} ABJM theory for k=1, N=1,...,19. The result is a polynomial in π^{-1} with rational coefficients. As an application of our results we numerically determine the coefficient of the membrane 1-instanton correction to the partition function.
description: 8 pages, 2 figures. v3: introduction expanded, section about numerical applications added