cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Citizen Science and Wikipedia.
Creators: name: Leachman, Siobhan
Publisher: name: Zenodo
Year: 2023
Subjects: #CitizenScience #Wikipedia #iNaturalist #CreativeCommons

description: A presentation on Citizen Science and Wikipedia given as part of a panel discussion about citizen science in Australasia to celebrate Citizen Science Month 2023. The panel was recorded and can be seen here https://www.youtube.com/watch?v=AtCMCpdJg6I.
Atom interferometers and a small-scale test of general relativity
Creators: name: Myszkowski, Mikołaj
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Since the first appearance of general relativity in 1916, various experiments have been conducted to test the theory. Due to the weakness of the interactions involved, all of the documented tests were carried out in a gravitational field generated by objects of an astronomical scale. We propose an idea for an experiment that could detect purely general-relativistic effects in a lab-generated gravitational field. It is shown that a set of dense rapidly-revolving cylinders produce a frame-dragging effect substantial enough to be two orders of magnitude away from the observable range of the next generation of atomic interferometers. The metric tensor due to a uniform rotating axisymmetric body in the weak-field limit is calculated and the phase shift formula for the interferometer is derived. This article is meant to demonstrate feasibility of the concept and stimulate further research into the field of low-scale experiments in general relativity. It is by no means a fully developed experiment proposal.
description: 28 pages, 6 figures
Simulation and Optimization of Second-Harmonic Generation with Incoherent Broadband Laser Pulses
Creators: name: Malki, Marcus
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, GSI, Darmstadt
Year: 2022

description: Masterarbeit, TU Darmstadt, 2022; 78 pp. (2022). = Masterarbeit, TU Darmstadt, 2022
Saturday Evening Concert (1975-03-08)
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2021

description: Fugue by J.S. Bach; In these delightful pleasant groves, Purcell; Andante, Keetman; First and last movement, Haydn trumpet concerto; vocal music including: Ode to joy, Beethoven; Nymphs and shepherds, Purcell; rock music including Summer breeze, Seals and Crofts
Concentration of the Kirchhoff index for Erdos-Renyi graphs
Creators: name: Boumal, Nicolas
name: Cheng, Xiuyuan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Given an undirected graph, the resistance distance between two nodes is the resistance one would measure between these two nodes in an electrical network if edges were resistors. Summing these distances over all pairs of nodes yields the so-called Kirchhoff index of the graph, which measures its overall connectivity. In this work, we consider Erdos-Renyi random graphs. Since the graphs are random, their Kirchhoff indices are random variables. We give formulas for the expected value of the Kirchhoff index and show it concentrates around its expectation. We achieve this by studying the trace of the pseudoinverse of the Laplacian of Erdos-Renyi graphs. For synchronization (a class of estimation problems on graphs) our results imply that acquiring pairwise measurements uniformly at random is a good strategy, even if only a vanishing proportion of the measurements can be acquired.
Ordered domains in sheared dense suspensions: the link to viscosity and the disruptive effect of friction
Creators: name: Goyal, Abhay
name: Del Gado, Emanuela
name: Jones, Scott Z
name: Martys, Nicos S
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Monodisperse suspensions of Brownian colloidal spheres crystallize at high densities, and ordering under shear has been observed at densities below the crystallization threshold. We perform large-scale simulations of a model suspension containing over $10^5$ particles to quantitatively study the ordering under shear and to investigate its link to the rheological properties of the suspension. We find that at high rates, for $Pe>1$, the shear flow induces an ordering transition that significantly decreases the measured viscosity. This ordering is analyzed in terms of the development of layering and planar order, and we determine that particles are packed into hexagonal crystal layers (with numerous defects) that slide past each other. By computing local $ψ_6$ and $ψ_4$ order parameters, we determine that the defects correspond to chains of particles in a square-like lattice. We compute the individual particle contributions to the stress tensor and discover that the largest contributors to the shear stress are primarily located in these lower density, defect regions. The defect structure enables the formation of compressed chains of particles to resist the shear, but these chains are transient and short-lived. The inclusion of a contact friction force allows the stress-bearing structures to grow into a system-spanning network, thereby disrupting the order and drastically increasing the suspension viscosity.
MPEC 2023-V214 : 2023 VK7
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VK7

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Reciprocal swimming at intermediate Reynolds number
Creators: name: Derr, Nicholas J.
name: Dombrowski, Thomas
name: Rycroft, Chris H.
name: Klotsa, Daphne
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In Stokes flow, Purcell's scallop theorem forbids objects with time-reversible (reciprocal) swimming strokes from moving. In the presence of inertia, this restriction is eased and reciprocally deforming bodies can swim. A number of recent works have investigated dimer models that swim reciprocally at intermediate Reynolds numbers Re ~ 1-1000. These show interesting results (e.g. switches of the swim direction as a function of inertia) but the results vary and seem to be case-specific. Here, we introduce a general model and investigate the behaviour of an asymmetric spherical dimer of oscillating length for small-amplitude motion at intermediate Re. In our analysis we make the important distinction between particle and fluid inertia, both of which need to be considered separately. We asymptotically expand the Navier-Stokes equations in the small amplitude limit to obtain a system of linear PDEs. Using a combination of numerical (Finite Element) and analytical (reciprocal theorem, method of reflections) methods we solve the system to obtain the dimer's swim speed and show that there are two mechanisms that give rise to motion: boundary conditions (an effective slip velocity) and Reynolds stresses. Each mechanism is driven by two classes of sphere-sphere interactions, between one sphere's motion and 1) the oscillating background flow induced by the other's motion, and 2) a geometric asymmetry induced by the other's presence. We can thus unify and explain behaviours observed in other works. Our results show how sensitive, counter-intuitive and rich motility is in the parameter space of finite inertia of particles and fluid.
description: 39 pages, 9 figures, in review at JFM
Quantum mechanical ab initio calculations of the structural, electronic and optical properties of bulk gold nitrides
Creators: name: Suleiman, Mohammed S. H.
name: Joubert, Daniel P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In the present work, the atomic and the electronic structures of Au3N, AuN and AuN2 are investigated using first-principles density-functional theory (DFT). We studied cohesive energy vs. volume data for a wide range of possible structures of these nitrides. Obtained data was fitted to a Birch-Murnaghan third-order equation of state (EOS) so as to identify the most likely candidates for the true crystal structure in this subset of the infinite parameter space, and to determine their equilibrium structural parameters. The analysis of the electronic properties was achieved by the calculations of the band structure and the total and partial density of states (DOS). Some possible pressure-induced structural phase transitions have been pointed out. Further, we carried out GW0 calculations within the random-phase approximation (RPA) to the dielectric tensor to investigate the optical spectra of the experimentally suggested modification: Au3N(D0_9). Obtained results are compared with experiment and with some available previous calculations.
description: 12 Pages, 11 Figures, 2 Tables
Direct Numerical Simulation of High Prandtl Number Fluid Flow in the Downcomer of an Advanced Reactor
Creators: name: Nguyen, Tri
name: Merzari, Elia
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The design of advanced nuclear reactors (Gen IV) involves an array of challenging fluid-flow issues that affect its safety and performance. The calculated DNS database will be instrumental in understanding the flow behavior in the downcomer. Ultimately, we aim to evaluate existing heat transfer correlations and some modifications are proposed.
description: arXiv admin note: substantial text overlap with arXiv:2203.14157
Rasmussen's spectral sequences and the sl(N)-concordance invariants
Creators: name: Lewark, Lukas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 57M25

description: Combining known spectral sequences with a new spectral sequence relating reduced and unreduced sl(N)-homology yields a relationship between the Homflypt-homology of a knot and its sl(N)-concordance invariants. As an application, some of the sl(N)-concordance invariants are shown to be linearly independent.
description: 20 pages, 7 figures. Second version: sharpened main theorem, added references, minor corrections. Third version: minor corrections, this corresponds to the published article
Conceptual aspects of geometric quantum computation
Creators: name: Sjöqvist, Erik
name: Mousolou, Vahid Azimi
name: Canali, Carlo M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Geometric quantum computation is the idea that geometric phases can be used to implement quantum gates, i.e., the basic elements of the Boolean network that forms a quantum computer. Although originally thought to be limited to adiabatic evolution, controlled by slowly changing parameters, this form of quantum computation can as well be realized at high speed by using nonadiabatic schemes. Recent advances in quantum gate technology have allowed for experimental demonstrations of different types of geometric gates in adiabatic and nonadiabatic evolution. Here, we address some conceptual issues that arise in the realizations of geometric gates. We examine the appearance of dynamical phases in quantum evolution and point out that not all dynamical phases need to be compensated for in geometric quantum computation. We delineate the relation between Abelian and non-Abelian geometric gates and find an explicit physical example where the two types of gates coincide. We identify differences and similarities between adiabatic and nonadiabatic realizations of quantum computation based on non-Abelian geometric phases.
description: Revised version; journal reference added
title: Bunte Pracht - Die Perlen der frühmittelalterlichen Gräberfelder von Liebenau, Kreis Nienburg/Weser und Dörverden, Kr. Verden/Aller. Chronologie der Gräber, Entwicklung und Trageweise des Perlenschmucks, Technik der Perlen
Creators: name: Siegmann, Maren
Publisher: name: University Library Heidelberg
Year: 2014

description: Dissertation Göttingen 1998/99 (Prof. Dr. Rosemarie Müller)
On exact minimization of Higgs potentials
Creators: name: Maniatis, Markos
name: Mehta, Dhagash
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Minimizing the Higgs potential is an essential task in any model involving Higgs bosons. Exact minimization methods proposed in the literature are based on the polynomial form of the potential. These methods will in general no longer work if loop contributions to the potential are taken into account. We present a method to keep the tree level global minimum unchanged in passing to the effective potential. We illustrate the method for the case of the Minimal Supersymmetric Model (MSSM).
description: 7 pages, 3 tables
Geodesic motion in Euclidean Schwarzschild geometry
Creators: name: Battista, Emmanuele
name: Esposito, Giampiero
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper performs a systematic investigation of geodesic motion in Euclidean Schwarzschild geometry, which is studied in the equatorial plane. The explicit form of geodesic motion is obtained in terms of incomplete elliptic integrals of first, second and third kind. No elliptic-like orbits exist in Euclidean Schwarzschild geometry, unlike the corresponding Lorentzian pattern. Among unbounded orbits, only unbounded first-kind orbits are allowed, unlike general relativity where unbounded second-kind orbits are always allowed.
description: v3: version accepted for publication in EPJ C
title: Archäologische Informationen, Vol 23, No 2 (2000)
Creators: name: DGUF E.V.
Publisher: name: University Library Heidelberg
Year: 2014

description: Archäologiesche Museen zwischen Archiv und Erlebnisort im Umbruch
description: Titel
 Impressum
 editorial
 Inhalt
 Event wenn's brennt? Gedanken zum Aufschwung vorgeschichtlicher Freilichtanlagen...213-218
 Früher war alles besser - Auch die Zukunft!...219-224
 Archäologie und Internet. Rückblick auf eine Lehrveranstaltung im WS 2000/2001 am Institut für Ur- und Frühgeschichte und Archäologie des Mittelalters der Universität Tübingen...225-228
 Kenntnis - Werkzeug - Rohmaterial. Ein Vademekum zum ältesten Handwerk des Menschen...229-242
 Bericht über die 14. Tagung des Arbeitskreises zur Erforschung der Tonpfeifen vom 1.-3. Juni 2000 in Liestal/CH...243-246
 Thomas Fischer: Die Römer in Deutschland...249-250
 Peter Ochsenbein (Hrsg.): Das Kloster St. Gallen im Mittelalter. Die kulturelle Blüte vom 8. bis zum 12. Jahrhundert...250-253
 Helmut Spatz: Das mittelneolithische Gräberfeld von Trebur, Kreis Groß-Gerau...253-256
 Vivian Davies und Renee Friedman: Unbekanntes Ägypten. Mit neuen Methoden alten Geheimnissen auf der Spur...257-262
 Jost Auler: Hundejunge und Blumenmond. Eine Jugenderzählung aus der Mittleren Steinzeit...264-267
 Sigrun M. Karlisch, Sibylle Kästner und Eva-Maria Mertens (Hrsg.): Vom Knochenmann zur Menschenfrau: Feministische Theorie und archäologische Praxis...267-268
 Stefan Altekamp und Paul Tiedemann: Internet für Archäologen - eine praxisorientierte Einführung...268-269
 Mark Redknap: Die römischen und mittelalterlichen Töpfereien in Mayen, Kreis Mayen-Koblenz...269-270
 Taphonomie und Archäologie der Pferdereste aus Wallertheim, Fundschicht F (Grabung Conard 1991-1994)...271-275
 Die Wildpflanzen der Cortaillod-moyen-zeitlichen Besiedlung von Concise-sous-Colachoz, Kt. Waadt, Schweiz...277-280
 Die mittelalterliche Siedlung Vriemeensen im Rahmen der südniedersächsischen Wüstungsforschung unter besonderer Berücksichtigung der Problematik von Kleinadelssitzen...281-286
 DGUF-Nachrichten...287-288
 Rezensionangebote...288
 Adressen der Mitglieder des Vorstandes und des Beirates der DGUF...289
 Hinweise der Redaktion...291
 Bestelliste Archäologische Informationen
 Göttinger Typentafeln - Mesolithikum
 Daniel Schyle: Das jungneolithische Erdwerk von Salzkotten-Oberntudorf, Kr. Paderborn: Die Ausgrabungen 1988 bis 1992...262-264
 Sammlungen, Museen, Ausstellungshallen. Über den Umgang mit archäologischen Geschichtsquellen...187-195
Skein Modules from Skew Howe Duality and Affine Extensions
Creators: name: Queffelec, Hoel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Algebra (math.QA)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 81R50, 17B37, 17B67, 57M25, 57M27

description: We show that we can release the rigidity of the skew Howe duality process for ${\mathfrak sl}_n$ knot invariants by rescaling the quantum Weyl group action, and recover skein modules for web-tangles. This skew Howe duality phenomenon can be extended to the affine ${\mathfrak sl}_m$ case, corresponding to looking at tangles embedded in a solid torus. We investigate the relations between the invariants constructed by evaluation representations (and affinization of them) and usual skein modules, and give tools for interpretations of annular skein modules as sub-algebras of intertwiners for particular $U_q({\mathfrak sl}_n)$ representations. The categorification proposed in a joint work with A. Lauda and D. Rose also admits a direct extension in the affine case.
title: Osteoblastoma-like osteosarcoma with local recurrence in the distal radius
Creators: name: Tornič, Tajda
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Musculoskeletal system
subject: Bones
subject: Musculoskeletal bone
subject: Conventional radiography
subject: MR
subject: PET-CT
subject: Clinical Cases

description: Clinical History: A 29-year-old female with a history of osteoblastoma of the right radius that was previously treated with an intralesional curettage was presented to the orthopaedic surgeon with recurrent pain during movement of the wrist three years after the operation. 

description: 29 years, female
title: ОПТИМИЗАЦИЯ ДЕЯТЕЛЬНОСТИ ГОСУДАРСТВЕННЫХ И МУНИЦИПАЛЬНЫХ УЧРЕЖДЕНИЙ: НАПРАВЛЕНИЯ В ПРОЦЕССНОЙ ДЕЯТЕЛЬНОСТИ
Creators: name: Осипов, Евгений
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: В настоящее время перед руководителями государственных и муниципальных учреждений встает множество новых проблем. Основная из них – обеспечение выполнения поставленных учредителем задач, достижение показателей эффективности деятельности, успешная реализация проектов при недостаточном финансировании, неизменном бюджете или секвестре бюджета. Для достижения поставленных целей в новых условиях современных вызовов и ограничений необходимо рассмотреть основные направления по оптимизации финансово-хозяйственной деятельности учреждений, финансируемых из региональных и
муниципальных бюджетов, классифицировать и сгруппировать их для выработки комплексной методологии совершенствования деятельности и повышения эффективности расходования бюджетных средств. Объектом исследования является финансовохозяйственная, процессная деятельность учреждений. Цель статьи – изучить процессную деятельность и выявить возможности ее оптимизации.
Optimal vaccination at high reproductive numbers: sharp transitions and counter-intuitive allocations
Creators: name: Gavish, Nir
name: Katriel, Guy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Optimization and Control (math.OC)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: Optimization of vaccine allocations among different segments of a heterogeneous population is important for enhancing the effectiveness of vaccination campaigns in reducing the burden of epidemics. Intuitively, it would seem that allocations designed to minimize infections should prioritize those with the highest risk of being infected and infecting others. This prescription is well supported by vaccination theory, e.g., when the vaccination campaign aims to reach herd immunity. In this work, we show, however, that for vaccines providing partial protection (leaky vaccines) and for sufficiently high values of the basic reproduction number, intuition is overturned: the optimal allocation for minimizing the number of infections prioritizes the vaccination of those who are least likely to be infected. Furthermore, we show that this phenomenon occurs at a range of basic reproduction numbers relevant for the currently circulating strains of SARS-CoV-19. The work combines numerical investigations, asymptotic analysis for a general model, and complete mathematical analysis in a simple two-group model. The results point to important considerations in managing vaccination campaigns for infections with high transmissibility.
Protrusion fluctuations direct cell motion
Creators: name: Caballero, David
name: Voituriez, Raphael
name: Riveline, Daniel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences
subject: 82-XX

description: Many physiological phenomena involve directional cell migration. It is usually attributed to chemical gradients in vivo. Recently, other cues have been shown to guide cells in vitro, including stiffness/adhesion gradients or micro-patterned adhesive motifs. However, the cellular mechanism leading to these biased migrations remains unknown, and, often, even the direction of motion is unpredictable. In this study, we show the key role of fluctuating protrusions on ratchet-like structures in driving NIH3T3 cell migration. We identified the concept of efficient protrusion and an associated direction index. Our analysis of the protrusion statistics facilitated the quantitative prediction of cell trajectories in all investigated conditions. We varied the external cues by changing the adhesive patterns. We also modified the internal cues using drug treatments, which modified the protrusion activity. Stochasticity affects the short- and long-term steps. We developed a theoretical model showing that an asymmetry in the protrusion fluctuations is sufficient for predicting all measures associated with the long-term motion, which can be described as a biased persistent random walk.
description: Supplementary movies available upon request
title: Paläolithische Felskunst in Deutschland?
Creators: name: Bednarik, Robert G.
Publisher: name: University Library Heidelberg
Year: 2014

description: Es ist behauptet worden, daß abgeplatzte Felsbruchstücke von jungpaläolithischen Fundplätzen in Deutschland Reste gravierter oder gemalter Felskunst dieser Zeit tragen. Eine vergleichende Betrachtung der Stücke ging davon aus, daß Felskunst dieser Zeit in Deutschland existierte. Die Ergebnisse zeigen jedoch, daß keinerlei Belege einer paläolithischen Felskunst in Deutschland vorliegen. Tatsächlich handelt es sich bei den entsprechenden Stücken zumeist um durch Quartz-Körner
verursachte taphonomische Kratzer, die im dichten Fell von Höhlenbären eingetragen wurden, um natürliche Oberflächenstrukturen oder Verfärbungen sowie um anthropogene Spuren, die erst nach dem Ausbruch des jeweiligen Steins aus dem Fels entstanden sind.
description: Numerous exfoliated rock fragments from German Upper Palaeolithic sites have been claimed to bear traces of engraved or painted rock art from that period. The results of a comprehensive examination of these specimens claimed to present rock art are reported. However, they indicate that no evidence of any Palaeolithic rock art has so far been presented from Germany. The examples tendered so far consist mostly of taphonomic Scratches caused by quartz grains embedded in the shaggy für of cave bears, of natural surface accretions or discolourations on exfoliated clasts, and of anthropogenic markings made after the rock fragment in question had become exfoliated.
On Saito's normal crossing condition
Creators: name: Schulze, Mathias
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H20 (Primary), 14M07, 32A27 (Secondary)

description: Kyoji Saito defined a residue map from the logarithmic differential 1-forms along a reduced complex analytic hypersurface to the meromorphic functions on the hypersurface. He studied the condition that the image of this map coincides with the weakly holomorphic functions, that is, with the functions on the normalization. With Michel Granger, the author proved that this condition is equivalent to the hypersurface being normal crossing in codimension one. In this article, the condition is given a natural interpretation in terms of regular differential forms beyond the hypersurface case. For reduced equidimensional complex analytic spaces which are free in codimension one, the geometric interpretation of being normal crossing in codimension one is shown to persist.
description: 25 pages
title: Wolfgang Kimmig: Die "Wasserburg Buchau" - Keramikfunde
Creators: name: Brandherm, Dirk
Publisher: name: University Library Heidelberg
Year: 2014

description: Rezension zu: Wolfgang Kimmig: Die "Wasserburg Buchau" - Keramikfunde
Materialhefte zur Archäologie in BadenWürttemberg 58. Konrad Theiss Verlag. Stuttgart 2000. 75 Seiten, 65 Tafeln. ISBN 3806215529
MPEC 2023-V215 : 2023 VM7
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VM7

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: Franz Krippner: Vom Inferno zur Kulturlandschaft. Der prähistorische Mensch im Nördlinger Ries
Creators: name: Fries, Jana Esther
Publisher: name: University Library Heidelberg
Year: 2014

description: Rezension zu: Franz Krippner: Vom Inferno zur Kulturlandschaft. Der prähistorische Mensch im Nördlinger Ries Verlag F. Steinmeier. Nördlingen 2000. 176 Seiten, 98 Abbildungen. ISBN 3927496812
title: Martin Kuckenburg: Als der Mensch zum Schöpfer wurde - An den Wurzeln der Kultur
Creators: name: Vosteen, Markus
Publisher: name: University Library Heidelberg
Year: 2014

description: Rezension: Martin Kuckenburg: Als der Mensch zum Schöpfer wurde - An den Wurzeln der Kultur, Verlag Klett-Cotta. Stuttgart 2001. 238 S., zahlreiche
Abbildungen. ISBN 3608940340
Energy-Efficient Optimization of Multi-User NOMA-Assisted Cooperative THz-SIMO MEC Systems
Creators: name: Maraqa, Omar
name: Al-Ahmadi, Saad
name: Rajasekaran, Aditya
name: Sokun, Hamza
name: Yanikomeroglu, Halim
name: Sait, Sadiq M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The various requirements in terms of data rates and latency in beyond 5G and 6G networks have motivated the integration of a variety of communications schemes and technologies to meet these requirements in such networks. Among these schemes are Terahertz (THz) communications, cooperative non-orthogonal multiple-access (NOMA)-enabled schemes, and mobile edge computing (MEC). THz communications offer abundant bandwidth for high-data-rate short-distance applications and NOMA-enabled schemes are promising schemes to realize the target spectral efficiencies and low latency requirements in future networks, while MEC would allow distributed processing and data offloading for the emerging applications in these networks. In this paper, an energy-efficient scheme of multi-user NOMA-assisted cooperative THz single-input multiple-output (SIMO) MEC systems is proposed to allow the uplink transmission of offloaded data from the far cell-edge users to the more computing resources in the base station (BS) through the cell-center users. To reinforce the performance of the proposed scheme, two optimization problems are formulated and solved, namely, the first problem minimizes the total users' energy consumption while the second problem maximizes the total users' computation energy efficiency (CEE) for the proposed scheme. In both problems, the NOMA user pairing, the BS receive beamforming, the transmission time allocation, and the NOMA transmission power allocation coefficients are optimized, while taking into account the full-offloading requirements of each user as well as the predefined latency constraint of the system. The obtained results reveal new insights into the performance and design of multi-user NOMA-assisted cooperative THz-SIMO MEC systems.
description: Accepted for publication in IEEE Transactions on Communications
The sharp threshold for maximum-size sum-free subsets in even-order abelian groups
Creators: name: Bushaw, Neal
name: Neto, Maurício Collares
name: Morris, Robert
name: Smith, Paul
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We study sum-free sets in sparse random subsets of even order abelian groups. In particular, we determine the sharp threshold for the following property: the largest such set is contained in some maximum-size sum-free subset of the group. This theorem extends recent work of Balogh, Morris and Samotij, who resolved the case G = Z_{2n}, and who obtained a weaker threshold (up to a constant factor) in general.
description: 29 pages, revised version, to appear in Combinatorics, Probability & Computing
Taming Quantum Noise for Efficient Low Temperature Simulations of Open Quantum Systems
Creators: name: Xu, Meng
name: Yan, Yaming
name: Shi, Qiang
name: Ankerhold, J.
name: Stockburger, J. T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The hierarchical equations of motion (HEOM), derived from the exact Feynman-Vernon path integral, is one of the most powerful numerical methods to simulate the dynamics of open quantum systems that are embedded in thermal environments. However, its applicability is restricted to specific forms of spectral reservoir distributions and relatively elevated temperatures. Here we solve this problem and introduce an effective treatment of quantum noise in frequency space by systematically clustering higher order Matsubara poles equivalent to an optimized rational decomposition. This leads to an elegant extension of the HEOM to arbitrary temperatures and very general reservoirs in combination with efficiency, high accuracy and long-time stability. Moreover, the technique can directly be implemented in alternative approaches such as Green's function, stochastic, and pseudo-mode formulations. As one highly non-trivial application, for the sub-ohmic spin-boson model at vanishing temperature the Shiba relation is quantitatively verified which predicts the long-time decay of correlation functions.
description: v1:11pages, 8 figures. v2: grant number corrected. v3:accepted, 5 pages, 4 figures of the main text
Understanding and Designing Mechanisms for Attracting and Retaining Open-Source Software Contributors
Creators: name: Qiu, Huilian
Publisher: name: Carnegie Mellon University
Year: 2022
Subjects: subject: Computer Software
subject: FOS: Computer and information sciences

description: Open-source software (OSS) is now ubiquitous and indispensable, supporting applications in virtually every domain. Therefore, sustaining this digital infrastructure is of utmost societal importance. One of the significant challenges in OSS sustainability is its low gender diversity. It is a well-known fact that the open-source software community is heavily skewed towards men. A low gender diversity environment is non-inclusive to non-male people. Women are one of the under-represented groups, taking up at most 10% of the OSS population. Several studies have demonstrated that women face more discrimination; for example, in some ecosystems, women have lower code acceptance rates, longer code review delays, and doubts about their skills and abilities. The low diversity and non-inclusive culture can lead to three major challenges. First, it limits the contributor pool, which harms OSS sustainability because OSS projects need a constant supply of effort for development and maintenance. Second, it impedes project success because evidence shows that a higher gender diverse team is more productive and performs better. Third, it affects gender representation and equity, thus preventing all contributors from enjoying the benefits of OSS, such as finding a job. With much evidence showing the presence of gender discrimination, this dissertation studies why this happens and what might be an effective intervention. The first three studies in this dissertation are mixed-methods empirical studies that aim to explain the low representation of women among other marginalized groups. Because OSS development is a socio-technical activity, I use theories from social sciences and humanities, such as sociology, economics, and linguistics, to derive hypotheses and explain and contextualize results. The first three studies are arranged by the phases of an OSS contributor, with one chapter on each of the phases: newcomer, contributor and long-term contributor, and disengaged. To conclude the dissertation, I take one step further to develop an intervention to improve the overall diversity and inclusion in OSS. As the curb-cutting phenomenon describes, designs that cater to marginalized groups also benefit a wider range of people. I use insights from the first three studies to inform the design of a dashboard for maintainers to monitor the health of their project community. I tested the dashboard through two rounds of think-aloud studies and one round of longer-term diary studies with OSS maintainers for usability and effectiveness. Overall, maintainers are excited about our dashboard’s information and agree that our health indicators are informative and helpful.
A stabilized formulation for the solution of the incompressible unsteady Stokes equations in the frequency domain
Creators: name: Esmaily, Mahdi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: A stabilized finite element method is introduced for the simulation of time-periodic creeping flows, such as those found in the cardiorespiratory systems. The new technique, which is formulated in the frequency rather than time domain, strictly uses real arithmetics and permits the use of similar shape functions for pressure and velocity for ease of implementation. It involves the addition of the Laplacian of pressure to the continuity equation with a complex-valued stabilization parameter that is derived systematically from the momentum equation. The numerical experiments show the excellent accuracy and robustness of the proposed method in simulating flows in complex and canonical geometries for a wide range of conditions. The present method significantly outperforms a traditional solver in terms of both computational cost and scalability, which lowers the overall solution turnover time by several orders of magnitude.
Singular Behavior At The Edge of Laughlin States
Creators: name: Can, T.
name: Forrester, P. J.
name: Téllez, G.
name: Wiegmann, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A distinguishing feature of fractional quantum Hall (FQH) states is a singular behavior of equilibrium densities at boundaries. In contrast to states at integer filling fraction, such quantum liquids posses an additional dipole moment localized near edges. It enters observable quantities such as universal dispersion of edge states and Lorentz shear stress. For a Laughlin state, this behavior is seen as a peak, or overshoot, in the single particle density near the edge, reflecting a general tendency of electrons in FQH states to cluster near edges. We compute the singular edge behavior of the one particle density by a perturbative expansion carried out around a completely filled Landau level. This correction is shown to fully capture the dipole moment and the major features of the overshoot observed numerically. Furthermore, it exhibits the Stokes phenomenon with the Stokes line at the boundary of the droplet, decaying like a Gaussian inside and outside the liquid with different decay lengths. In the limit of vanishing magnetic length the shape the overshoot is a singular double layer with a capacity that is a universal function of the filling fraction. Finally, we derive the edge dipole moment of Pfaffian FQH states. The result suggests an explicit connection between the magnitude of the dipole moment and the bulk odd viscosity.
description: v1: 5 pages, 2 figures; v2: 7 pages, 2 figures, includes an expanded discussion of the singular double layer, and two new sections discussing the edge dipole moment of Pfaffian states. Otherwise, only minor changes to improve clarity
A Birman-Schwinger principle in galactic dynamics
Creators: name: Kunze, Markus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: These are the (somewhat extended) lecture notes for four lectures delivered at the spring school during the thematic programme "Mathematical Perspectives of Gravitation beyond the Vacuum Regime" at ESI Vienna in February 2022.
description: ESI, Vienna, Feb. 7-11, 2022
title: ЗАМОНАВИЙ ЎЗБЕК ОИЛАЛАРИДА ИЖТИМОИЙ-МАДАНИЙ ЖАРАЁНЛАР ДИНАМИКАСИ
title: ЗАМОНАВИЙ ЎЗБЕК ОИЛАЛАРИДА ИЖТИМОИЙ-МАДАНИЙ ЖАРАЁНЛАР ДИНАМИКАСИ
titleType: AlternativeTitle
Creators: name: Думарова, Гулфира
Publisher: name: Zenodo
Year: 2023

description: Ушбу мақолада замонавий ўзбек оилалари ижтимоий-маданий жараёнлари динамикасини ўрганишнинг педагогик жиҳатларига тўхталиниб, маънавий яратувчанликни жараён сифатида сақлаб, ташқи омилларнинг салбий таъсиридан ҳимоясини таъминлаш бугунги кунда долзарблиги тўғрисида фикр юритилган
Loop-fusion cohomology and transgression
Creators: name: Kottke, Chris
name: Melrose, Richard
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Topology (math.AT)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: `Loop-fusion cohomology' is defined on the continuous loop space of a manifold in terms of \vCech cochains satisfying two multiplicative conditions with respect to the fusion and figure-of-eight products on loops. The main result is that these cohomology groups, with coefficients in an abelian group, are isomorphic to those of the manifold and the transgression homomorphism factors through the isomorphism.
description: 10 pages. v2 contains minor corrections
Hereditary properties of co-Kähler manifolds
Creators: name: Bazzoni, Giovanni
name: Lupton, Gregory
name: Oprea, John
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Topology (math.AT)
subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53C25, 53D15, 55P62

description: We show how certain topological properties of co-K{ä}hler manifolds derive from those of the Kähler manifolds which construct them. We go beyond Betti number results and describe the cohomology algebra structure of co-Kähler manifolds. As a consequence, we prove that co-Kähler manifolds satisfy the Toral Rank Conjecture: $\dim(H^*(M;\mathbb{Q})) \geq 2^r$, for any $r$-torus $T^r$ which acts almost freely on $M$.
description: 17 pages. Section 4 of the previous version taken out, now contained in arXiv:1609.07880
title: Who built the Roman forts?
Creators: name: Marcu, Felix
Publisher: name: University Library Heidelberg
Year: 2014

description: When dealing with the construction of forts, one gains the impression that this was a task generally carried out by legionaries, although most arguments for this are based upon legionary tile-stamps found within auxiliary forts. Many inscriptions, however, prove the involvement of a large number of auxiliary troops. This paper attempts to outline the sources and collate the building inscriptions of the Roman provinces, in order to decide conclusively whether the auxiliaries merely functioned as assistants.
description: Was die Errichtung der Lager betrifft, gewinnt man den Eindruck, dass dies größtenteils von Legionären bewerkstelligt wurde, obschon die meisten Argumente dafür auf den innerhalb der Hilfstruppenlager gefundenen Legionsziegelstempeln basieren. Viele Inschriften beweisen aber das Mitwirken einer großer Anzahl von Auxiliartruppen. Dieser Beitrag versucht, die Quellen zu skizzieren und die Bauinschriften der römischen Provinzen zusammen zustellen, um endgültig zu entscheiden, ob Auxiliartruppen nur als Assistenten fungieren.
PeV neutrinos from interactions of cosmic rays with the interstellar medium in the Galaxy
Creators: name: Neronov, A.
name: Semikoz, D. V.
name: Tchernin, C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a self-consistent interpretation of the of very-high-energy neutrino signal from the direction of the inner Galaxy, which is a part of the astronomical neutrino signal reported by IceCube. We demonstrate that an estimate of the neutrino flux in the E>100 TeV energy range lies at the high-energy power-law extrapolation of the spectrum of diffuse gamma-ray emission from the Galactic Ridge, as observed by Fermi telescope. This suggests that IceCube neutrino and Fermi/LAT gamma-ray fluxes are both produced in interactions of cosmic rays with the interstellar medium in the Norma arm and/or in the Galactic Bar. Cosmic rays responsible for the gamma-ray and neutrino flux are characterised by hard spectrum with the slope harder than -2.4 and cut-off energy higher than 10 PeV.
description: 6pages, 4 figures
Depicting Places in Information Systems Closing the Gap Between Representation and Experience
Creators: name: Cranshaw, Justin
Publisher: name: Carnegie Mellon University
Year: 2022
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Places are more than just locations on a map—they are centers of meaning and lived experience that play essential roles in how people interact with and make sense of the world. Over the last three decades, as computing has grown more powerful, more ubiquitous, and more deeply entwined with society, the ways people encounter and experience places are increasingly mediated by information systems such as digital maps, information overlays, social media, augmented reality, and local guides. However, these systems are often overly reductive and simplistic in their approach to place, ignoring much of the complexity inherent in everyday experience, and treating places as not much more than locations. This is problem for downstream decision-making processes, such as resource allocation, investment, or basic research. In this dissertation, I present three systems that aim to close gaps between how places are represented in information systems and how they are experienced in day-to-day life. • Livehoods demonstrates that the footprints of the urban crowd in social media can be used to produce a new kind of city neighborhood map that is flexible, dynamic, and able to evolve as neighborhoods do. • Curated City is a social city guide that represents places of the city as notjust singular aggregations of ratings or reviews, but as multitudes of different experiences and perspectives. • Finally, Journeys & Notes considers the the possibility of information systems acting as virtual places when the corresponding physical space lacks the qualities and affordances for place to develop. My approach is to engage with places as complex ecosystems with myriad stakeholders in order to design systems that engage with the milieu of daily life at places. I distill my learnings from building these systems into six attributes of place that can help designers grapple with places as not just locations, but as lived spaces where the practices of daily life unfold. This work opens up new avenues for the design of location-based information systems that are more insightful and meaningful, not just for users of these systems, but for all stakeholders of places they depict, and indeed for society as a whole. Thesis: By closing the gaps between how places are represented and how they are experienced, it is possible to design social information systems that are more insightful and meaningful to stakeholders.
Asymmetric Self-interacting Dark Matter via Dirac Leptogenesis
Creators: name: Dutta, Manoranjan
name: Narendra, Nimmala
name: Sahu, Narendra
name: Shil, Sujay
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The nature of neutrinos, whether Dirac or Majorana, is hitherto not known. Assuming that the neutrinos are Dirac, which needs $B-L$ to be an exact symmetry, we make an attempt to explain the observed proportionality between the relic densities of dark matter (DM) and baryonic matter in the present Universe ${\it i.e.,}\,\, Ω_{\rm DM} \approx 5\, Ω_{\rm B}$. Assuming the existence of heavy $SU(2)_L$ scalar doublet $(X= (X^0, X^-)^T)$ in the early Universe, an equal and opposite $B-L$ asymmetry can be generated in left and right-handed sectors by the CP-violating out-of-equilibrium decay $X^0 \to ν_L ν_R$ since $B-L$ is an exact symmetry. We ensure that $ν_L-ν_R$ equilibration does not occur until below the electroweak (EW) phase transition during which a part of the lepton asymmetry gets converted to dark matter asymmetry through a dimension eight operator, which conserves $B-L$ symmetry and is in thermal equilibrium. The remaining $B-L$ asymmetry then gets converted to a net B-asymmetry through EW-sphalerons which are active at a temperature above 100 GeV. To alleviate the small-scale anomalies of $Λ$CDM, we assume the DM to be self-interacting via a light mediator, which not only depletes the symmetric component of the DM, but also paves a way to detect the DM at terrestrial laboratories through scalar portal mixing.
description: 17 pages, 10 captioned figures, Version accepted for publication in PRD
Pathwise stability of likelihood estimators for diffusions via rough paths
Creators: name: Diehl, Joscha
name: Friz, Peter
name: Mai, Hilmar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider the classical estimation problem of an unknown drift parameter within classes of nondegenerate diffusion processes. Using rough path theory (in the sense of T. Lyons), we analyze the Maximum Likelihood Estimator (MLE) with regard to its pathwise stability properties as well as robustness toward misspecification in volatility and even the very nature of the noise. Two numerical examples demonstrate the practical relevance of our results.
description: Published at http://dx.doi.org/10.1214/15-AAP1143 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
title: Historiograffiti. Karikatur als Geschichts-Schreibung. Severin Heinisch: Die Karikatur. Über das Irrationale im Zeitalter der Vernunft, Wien/Köln/Graz (Böhlau) 1988
Creators: name: Ernst, Wolfgang
Publisher: name: University Library Heidelberg
Year: 2014

description: kritische berichte - Zeitschrift für Kunst- und Kulturwissenschaften, Bd. 17, Nr. 1 (1989): kritische berichte, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4