cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Direct determination of 2D Momentum Space from 2D Spatial Coherence of Light using a Modified Michelson Interferometer
Creators: name: Vedhanth, S. V. U.
name: Datta, Shouvik
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Momentum space distributions of photons coming out of any light emitting materials/devices provide critical information about its underlying physical origin. Conventional methods of determining such properties impose specific instrumentational difficulties for probing samples kept within a low temperature cryostat. There were past studies to measure one dimensional (1D) coherence function which could then be used for extracting momentum space information as well as reports of measurements of just two dimensional (2D) coherence function. However, all of those are associated with additional experimental complexities. So, here we propose a simpler, modified Michelson interferometer based optical setup kept at room temperature outside the cryostat to initially measure the 2D coherence function of emitted light, which can then be used to directly estimate the 2D in-plane momentum space distribution by calculating its fast Fourier transform. We will also discuss how this experimental method can overcome instrumentational difficulties encountered in past studies.
description: 23 pages, 6 figures
Potential of the Julia programming language for high energy physics computing
Creators: name: Eschle, J.
name: Gal, T.
name: Giordano, M.
name: Gras, P.
name: Hegner, B.
name: Heinrich, L.
name: Acosta, U. Hernandez
name: Kluth, S.
name: Ling, J.
name: Mato, P.
name: Mikhasenko, M.
name: Briceño, A. Moreno
name: Pivarski, J.
name: Samaras-Tsakiris, K.
name: Schulz, O.
name: Stewart, G. . A.
name: Strube, J.
name: Vassilev, V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Programming Languages (cs.PL)
subject: High Energy Physics - Experiment (hep-ex)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: J.2

description: Research in high energy physics (HEP) requires huge amounts of computing and storage, putting strong constraints on the code speed and resource usage. To meet these requirements, a compiled high-performance language is typically used; while for physicists, who focus on the application when developing the code, better research productivity pleads for a high-level programming language. A popular approach consists of combining Python, used for the high-level interface, and C++, used for the computing intensive part of the code. A more convenient and efficient approach would be to use a language that provides both high-level programming and high-performance. The Julia programming language, developed at MIT especially to allow the use of a single language in research activities, has followed this path. In this paper the applicability of using the Julia language for HEP research is explored, covering the different aspects that are important for HEP code development: runtime performance, handling of large projects, interface with legacy code, distributed computing, training, and ease of programming. The study shows that the HEP community would benefit from a large scale adoption of this programming language. The HEP-specific foundation libraries that would need to be consolidated are identified
description: 32 pages, 5 figures, 4 tables
Kaon BSM B-parameters using improved staggered fermions from $N_f=2+1$ unquenched QCD
Creators: name: Choi, Benjamin J.
name: Jang, Yong-Chull
name: Jung, Chulwoo
name: Jeong, Hwancheol
name: Kim, Jangho
name: Kim, Jongjeong
name: Kim, Sunghee
name: Lee, Weonjong
name: Leem, Jaehoon
name: Pak, Jeonghwan
name: Park, Sungwoo
name: Sharpe, Stephen R.
name: Yoon, Boram
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present results for the matrix elements of the additional $ΔS=2$ operators that appear in models of physics beyond the Standard Model (BSM), expressed in terms of four BSM $B$-parameters. Combined with experimental results for $ΔM_K$ and $ε_K$, these constrain the parameters of BSM models. We use improved staggered fermions, with valence HYP-smeared quarks and $N_f=2+1$ flavors of "asqtad" sea quarks. The configurations have been generated by the MILC collaboration. The matching between lattice and continuum four-fermion operators and bilinears is done perturbatively at one-loop order. We use three lattice spacings for the continuum extrapolation: $a\approx 0.09$, $0.06$ and $0.045\;$fm. Valence light-quark masses range down to $\approx m_s^{\rm phys}/13$ while the light sea-quark masses range down to $\approx m_s^{\rm phys}/20$. Compared to our previous published work, we have added four additional lattice ensembles, leading to better controlled extrapolations in the lattice spacing and sea-quark masses. We report final results for two renormalization scales, $μ=2\;\text{GeV}$ and $3\;\text{GeV}$, and compare them to those obtained by other collaborations. Agreement is found for two of the four BSM $B$-parameters ($B_2$ and $B_3^\text{SUSY}$). The other two ($B_4$ and $B_5$) differ significantly from those obtained using RI-MOM renormalization as an intermediate scheme, but are in agreement with recent preliminary results obtained by the RBC-UKQCD collaboration using RI-SMOM intermediate schemes.
description: 17 pages, 24 figures, 13 tables, and updated
Gain assisted controllable fast light generation in cavity magnomechanics
Creators: name: Das, Sanket
name: Chakraborty, Subhadeep
name: Dey, Tarak N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the controllable output field generation from a cavity magnomechanical resonator system that consists of two coupled microwave resonators. The first cavity interacts with a ferromagnetic yttrium iron garnet (YIG) sphere providing the magnon-photon coupling. Under passive cavities configuration, the system displays high absorption, prohibiting output transmission even though the dispersive response is anamolous. We replace the second passive cavity with an active one to overcome high absorption, producing an effective gain in the system. We show that the deformation of the YIG sphere retains the anomalous dispersion. Further, tuning the exchange interaction strength between the two resonators leads to the system's effective gain and dispersive response. As a result, the advancement associated with the amplification of the probe pulse can be controlled in the close vicinity of the magnomechanical resonance. Furthermore, we find the existence of an upper bound for the intensity amplification and the advancement of the probe pulse that comes from the stability condition. These findings may find potential applications for controlling light propagation in cavity magnomechanics.
Empirical Coordination with Two-Sided State Information and Correlated Source and State
Creators: name: Treust, Maël Le
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The coordination of autonomous agents is a critical issue for decentralized communication networks. Instead of transmitting information, the agents interact in a coordinated manner in order to optimize a general objective function. A target joint probability distribution is achievable if there exists a code such that the sequences of symbols are jointly typical. The empirical coordination is strongly related to the joint source-channel coding with two-sided state information and correlated source and state. This problem is also connected to state communication and is open for non-causal encoder and decoder. We characterize the optimal solutions for perfect channel, for lossless decoding, for independent source and channel, for causal encoding and for causal decoding.
description: 5 figures, 5 pages, presented at IEEE International Symposium on Information Theory (ISIT) 2015
Caroxylon garubicum Mucina 2017, comb. nov.
Creators: name: Mucina, Ladislav
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Amaranthaceae
Caroxylon
Caroxylon garubicum

description: 34. Caroxylon garubicum (Botsch.) Mucina comb. nov.
 Basionym: ― Salsola garubica Botsch. in Botanicheskii Zhurnal 66(7): 1037 (1981).
 Type: ― SOUTH-WEST AFRICA [NAMIBIA]. Helmeringhausen Dist. (2516 CD): Farm Garub-Urus LU 6, Rivierböschung im Geröll, 4 April 1968, Giess 10253 (holotype M-0107432!; isotype WIND!).
 Distribution: ― Namibia: Helmeringhausen District.
description: Published as part of Mucina, Ladislav, 2017, Caroxylon (Chenopodiaceae s. str.) in continental southern Africa and Madagascar: a preliminary nomenclatural synopsis and biogeographical considerations, pp. 151-178 in Phytotaxa 312 (2) on page 162, DOI: 10.11646/phytotaxa.312.2.1, http://zenodo.org/record/13701544
Detecting Pulsars with Neural Networks
Creators: name: Künkel, Lars
Publisher: name: Universität Bielefeld
Year: 2022
Subjects: subject: 530

description: Pulsars are rotating neutron stars which emit faint beams of electromagnetic radiation. Astronomers are able to observe these beams as faint, dispersed pulses. In pulsar searches large effort is expended to discover these pulses in time- and frequency-resolved data from radio telescopes. Simultaneously recovering the frequency-dependent delay (dispersion) and the periodicity of the signal is a complex and demanding task, which is further exacerbated by the presence of various types of radio-frequency interference (RFI) and observing-system effects. New observing systems provide higher bandwidths, higher data volumes and greater overall sensitivity (also to RFI), which further enhances these challenges.

 A novel approach for the analysis of pulsar search data is presented in this thesis. I developed and neural-network-based pipeline capable of correcting for the (*a priori* unknown) interstellar dispersion while suppressing a wide range of RFI signals and system effects. A convolutional neural network using dilated convolutions dedisperses pulsar pulses. The classification is performed by classifiers combining standard algorithms for periodicity searches such as the Fast Fourier Transform (FFT) and the Fast Folding Algorithm (FFA) with convolutional layers. This architecture can be trained in an end-to-end manner to identify faint pulses with an unknown amount of dispersion. The performance of the model relies heavily on the training process. Optimising this training process and allowing the model to have the best possible performance is a big focus of this work.

 I developed an approach to train the network with successively weaker signals which enables the network to detect strong pulsars after a small amount of time and increase the sensitivity in subsequent training steps. The training process is guided by multiple loss functions which help the network to build useful representations of the input data. The training of the model is performed using simulated pulsars and real pulsar survey observations. I use a technique to relabel the used survey observations which allows training the model on a pulsar survey without labelling the pulsars in the survey first. I am able to detect a wide range of real pulsars and the dedispersion of my neural network is competitive with knowing the pulsar dispersion already and performing conventional dedispersion.
Warum die Kunst-Marke "Die Mannschaft" für die Überkommerzialisierung des DFB steht
Creators: name: Nufer, Gerd
Publisher: name: Universität Tübingen
Year: 2018
Subjects: subject: Marketing , Sport
subject: 330
subject: Sportmanagement
subject: Sportmarketing
subject: Sport Marketing
subject: Sport Management

description: Mit dem WM-Desaster soll eine neue Ära beim DFB starten – Schluss mit künstlichen Pseudonymen wie "Die Mannschaft". Doch wie konnte die Marketing-Kampagne nach dem WM-Titel 2014 so dermaßen scheitern? Wie konnte aus einem Spitznamen das Sinnbild der Überkommerzialisierung werden?
MS Gr. class. c. 2 318
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 339 col. 4. Philodemus, De Stoicis
Drawing by Giuseppe (?) Casanova
Detecting Relic Gravitational Waves by Pulsar Timing Arrays: Effects of Cosmic Phase Transitions and Relativistic Free-Streaming Gases
Creators: name: Liu, Xiao-Jin
name: Zhao, Wen
name: Zhang, Yang
name: Zhu, Zong-Hong
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Relic gravitational waves (RGWs) generated in the early Universe form a stochastic GW background, which can be directly probed by measuring the timing residuals of millisecond pulsars. In this paper, we investigate the constraints on the RGWs and on the inflationary parameters by the observations of current and potential future pulsar timing arrays. In particular, we focus on effects of various cosmic phase transitions (e.g. $e^{+}e^{-}$ annihilation, QCD transition and SUSY breaking) and relativistic free-streaming gases (neutrinos and dark fluids) in the general scenario of the early Universe, which have been neglected in the previous works. We find that the phase transitions can significantly damp the RGWs in the sensitive frequency range of pulsar timing arrays, and the upper limits of tensor-to-scalar ratio $r$ increase by a factor $\sim 2$ for both current and future observations. However, the effects of free-steaming neutrinos and dark fluids are all too small to be detected. Meanwhile, we find that, if the effective equation of state $w$ in the early Universe is larger than $1/3$, i.e. deviating from the standard hot big bang scenario, the detection of RGWs by pulsar timing arrays becomes much more promising.
description: 19 pages, 17 figures, 6 tables, Phys.Rev.D accepted
Caroxylon gemmatum Mucina 2017, comb. nov.
Creators: name: Mucina, Ladislav
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Amaranthaceae
Caroxylon
Caroxylon gemmatum

description: 36. Caroxylon gemmatum (Botsch.) Mucina comb. nov.
 Basionym: ― Salsola gemmata Botsch. in Botanicheskii Zhurnal 63: 832 (1978).
 Type: ― SOUTH-WEST AFRICA [NAMIBIA]. Spencer Bay: Sattelhügel-Nord, Dünenpolstergesellschaft mit Psilocaulon, 17 January 1974, Giess & Robinson 13221 (holotype M-0107431!; isotypes LE-00011862!, PRE-0537058-0!, WIND!).
 Distribution: ― Namibia: Namib Desert coast (Spencer Bay NNW of Lüderitz).
description: Published as part of Mucina, Ladislav, 2017, Caroxylon (Chenopodiaceae s. str.) in continental southern Africa and Madagascar: a preliminary nomenclatural synopsis and biogeographical considerations, pp. 151-178 in Phytotaxa 312 (2) on page 162, DOI: 10.11646/phytotaxa.312.2.1, http://zenodo.org/record/13701544
Improving Estimation of the Koopman Operator with Kolmogorov-Smirnov Indicator Functions
Creators: name: Ngo, Van A.
name: Lin, Yen Ting
name: Perez, Danny
Publisher: name: arXiv
Year: 2023
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Biological Physics (physics.bio-ph)
subject: Computational Physics (physics.comp-ph)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: It has become common to perform kinetic analysis using approximate Koopman operators that transforms high-dimensional time series of observables into ranked dynamical modes. Key to a practical success of the approach is the identification of a set of observables which form a good basis in which to expand the slow relaxation modes. Good observables are, however, difficult to identify {\em a priori} and sub-optimal choices can lead to significant underestimations of characteristic timescales. Leveraging the representation of slow dynamics in terms of Hidden Markov Model (HMM), we propose a simple and computationally efficient clustering procedure to infer surrogate observables that form a good basis for slow modes. We apply the approach to an analytically solvable model system, as well as on three protein systems of different complexities. We consistently demonstrate that the inferred indicator functions can significantly improve the estimation of the leading eigenvalues of the Koopman operators and correctly identify key states and transition timescales of stochastic systems, even when good observables are not known {\em a priori}.
description: 28 pages, 6 figures
Accretion of Self-interacting Scalar Field Dark Matter Onto a Reissner-Nordström Black Hole
Creators: name: Ravanal, Yuri
name: Gómez, Gabriel
name: Cruz, Norman
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Self-interacting scalar field dark matter can be seen as an extension of the free case known as Fuzzy dark matter. The interactive case is capable of reproducing the positive features of the free case at both astrophysical and cosmological scales. On the other hand, current imaging black holes (BHs) observations provided by the Event Horizon Telescope (EHT) collaboration cannot rule out the possibility that BHs can carry some amount of charge. Motivated by these aspects, and by the possibility of detecting dark matter through its gravitational imprints on BH observations, in this paper, we extend previous studies of accretion of self-interacting scalar field dark matter to the charged BH case. Our analysis is based on the assumption on spherically symmetric flow and employs a test fluid approximation. All analytical expressions are derived from the ground up in Schwarzschild coordinates. Concretely, we implement analytical and numerical approaches to investigate the impact of the charge on the energy flux. From this analysis, we notice that the mass accretion rate efficiency is reduced up to $\sim 20\%$ for the maximum allowed charge. Additionally, considering the mass accretion rate of M87$^{\star}$ inferred from Polarization data of the EHT, we infer the conservative bound $ λ_4 > (1.49-10.2)( m / 1 \rm {eV} )^4$ based on the simple criterion that ensures the mass accretion rate caused by DM remains subdominant compared to the baryonic component.
description: 14 pages, 7 figures, typos corrected, references updated, adjusted colors in figure 3. Matches PRD version
Wie man mit Frauen fertig wird: Ein indo-persischer Ratgeber
Creators: name: Kurz, Susanne
Publisher: name: Universität Tübingen
Year: 2018
Subjects: subject: Ṭūsī, Naṣīr-ad-Dīn Muḥammad Ibn-Muḥammad aṭ- , Ġazzālī, Abū-Ḥāmid Muḥammad Ibn-Muḥammad al- , Geschichte , Indien , Frau , Erotik , Ratgeber , Muslim , Persisch , Übersetzung , Adab , Literatur , Sexualität , Gurgānī, Ismāʿīl Ibn-Ḥasan al-
subject: 090
subject: 290
subject: 490
subject: 890
subject: 900
subject: 950
subject: 990
subject: indo-persisch
subject: Perso-Indica
subject: unterhaltend-didaktische Literatur
subject: belles-lettres
subject: schöne Literatur
subject: erotology
subject: Lazzat an-nisa'
subject: ethics
subject: Laddat an-nisa'
subject: adaptations
subject: Ziya' ad-Din Nakhshabi
subject: translations from Sanskrit
subject: Graeco-Islamic medicine
subject: Nakhshabi
subject: Diya' ad-Din Nahsabi
subject: Graeco-Islamic
subject: erotic advice literature
subject: Nahsabi
subject: Dawani
subject: Islamic ethics
subject: Indo-Persian
subject: Dawwani
subject: akhlaq
subject: ahlaq
subject: Erotologie
subject: Ethik
subject: Adaption
subject: Übersetzungen aus dem Sanskrit
subject: graeco-islamische Medizin
subject: graeco-islamisch
subject: Erotikratgeber
subject: islamische Ethik

description: Dieser Aufsatz stellt eine der umfangreichsten und schillerndsten Handschriften des beliebten indo-persischen Erotikratgebers Laẕẕat on-nesāʾ vor und zeigt dessen zentrales Anliegen sowie seinen originellen Lösungsansatz auf. Dabei wird ein genreübergreifender diskursiver Zusammenhang erkennbar, in dem Denktraditionen mehrerer Jahrhunderte zusammengeführt und transzendiert werden.
Control of Spin Polarization through Recollisions
Creators: name: Carlström, Stefanos
name: Dahlström, Jan Marcus
name: Ivanov, Misha Yu
name: Smirnova, Olga
name: Patchkovskii, Serguei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Using only linearly polarized light, we study the possibility of generating spin-polarized photoelectrons from xenon atoms. No net spin polarization is possible, since the xenon ground state is spin-less, but when the photoelectron are measured in coincidence with the residual ion, spin polarization emerges. Furthermore, we show that ultrafast dynamics of the recolliding photoelectrons contribute to an apparent flipping of the spin of the photoelectron, a process that has been completely neglected so far in all analyses of recollision-based processes. We link this phenomenon to the ``spin--orbit clock'' of the remaining ion. These effects arise already in dipole approximation.
Pickering emulsions stabilized by oppositely charged colloids: stability and pattern formation
Creators: name: Pushpam, Sam David Christdoss
name: Basavaraj, Madivala G.
name: Mani, Ethayaraja
Publisher: name: arXiv
Year: 2015
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Binary mixture of oppositely charged of colloids can be used to stabilize water-in-oil or oil-in-water emulsions. A Monte Carlo simulation study to address the effect of charge ratio of colloids on the stability of Pickering emulsions is presented. The colloidal particles at the interface are modeled as aligned dipolar hard spheres, with attractive interactions between unlike-charged and repulsive interaction between like-charged particles. The optimum composition (fraction of positively charged particles) required for the stabilization corresponds to a minimum in the interaction energy per particle. In addition, for each charge ratio, there is a range of compositions where emulsions can be stabilized. The structural arrangement of particles or the pattern formation at the emulsion interface is strongly influenced by the charge ratio. We find well-mixed isotropic, square and hexagonal arrangement of particles on emulsion surface for different compositions at a given charge ratio. Distribution of coordination numbers is calculated to characterize structural features. The simulation study is useful for rational design of Pickering emulsifications wherein oppositely charged colloids are used, and for the control of pattern formation that can be useful for the synthesis of colloidosomes and porous-shells derived from thereof.
description: 7 pages, 6 figures
Caroxylon gemmiparum Mucina 2017, comb. nov.
Creators: name: Mucina, Ladislav
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Amaranthaceae
Caroxylon
Caroxylon gemmiparum

description: 38. Caroxylon gemmiparum (Botsch.) Mucina comb. nov.
 Basionym: ― Salsola gemmipara Botsch. in Botanicheskii Zhurnal 63: 833 (1978).
 Type: ― SOUTH-WEST AFRICA [NAMIBIA]. Trekkopje (2215 CC): Marmorrücken südlich Witportberge, 6 November 1966, Giess 9575 (holotype M-0107429!; isotype WIND!).
 Distribution: ― Namibia: Namib Desert, NE of Arandis.
description: Published as part of Mucina, Ladislav, 2017, Caroxylon (Chenopodiaceae s. str.) in continental southern Africa and Madagascar: a preliminary nomenclatural synopsis and biogeographical considerations, pp. 151-178 in Phytotaxa 312 (2) on page 163, DOI: 10.11646/phytotaxa.312.2.1, http://zenodo.org/record/13701544
Proof Theory. Proceedings of the Workshop held at Unilog'2018 in Vichy, 25 June 2018
Creators: name: Piecha, Thomas (Hrsg.)
name: Schroeder-Heister, Peter (Hrsg.)
Publisher: name: Universität Tübingen
Year: 2018
Subjects: subject: Logik , Beweis , Beweistheorie , Deduktion
subject: 004
subject: 100
subject: 510
subject: Logic
subject: Proof
subject: Proof Theory
subject: Deduction
subject: Beweistheoretische Semantik
subject: Automatisches Beweisen
subject: Automated Theorem Proving
subject: Proof-Theoretic Semantics

description: The workshop on proof theory took place in Vichy at the Pôle Universitaire de Vichy on 25 June 2018. It was part of Unilog'2018, the 6th World Congress and School on Universal Logic. The proceedings collect abstracts, slides and papers of the presentations given.
MS Gr. class. c. 2 319
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 339 col. 17. Philodemus, De Stoicis
Drawing by Giuseppe (?) Casanova
Caroxylon giessii Mucina 2017, comb. nov.
Creators: name: Mucina, Ladislav
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Amaranthaceae
Caroxylon
Caroxylon giessii

description: 39. Caroxylon giessii (Botsch.) Mucina comb. nov.
 Basionym: ― Salsola giessii Botsch. in Botanicheskii Zhurnal 58: 824 (1973).
 Type: ― SOUTH-WEST AFRICA [NAMIBIA]. Swakopmund Dist.: kleines Seitenriver von Zufahrt Norden nach Homeb, Kuiseb, in Glimmerschiefer, 11 October 1961, Giess 3770 (holotype NBG-0083383-0!; isotypes M-0107427!, PRE-0377984-0!).
 Distribution: ― Namibia: Namib Desert, Naukluft Mts.
description: Published as part of Mucina, Ladislav, 2017, Caroxylon (Chenopodiaceae s. str.) in continental southern Africa and Madagascar: a preliminary nomenclatural synopsis and biogeographical considerations, pp. 151-178 in Phytotaxa 312 (2) on page 163, DOI: 10.11646/phytotaxa.312.2.1, http://zenodo.org/record/13701544
Azimuthal magnetorotational instability with super-rotation
Creators: name: Rüdiger, Guenther
name: Schultz, Manfred
name: Gellert, Marcus
name: Stefani, Frank
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: It is demonstrated that the azimuthal magnetorotational instability (AMRI) also works with radially increasing rotation rates contrary to the standard magnetorotational instability for axial fields which requires negative shear. The stability against nonaxisymmetric perturbations of a conducting Taylor-Couette flow with positive shear under the influence of a toroidal magnetic field is considered if the background field between the cylinders is current-free. For small magnetic Prandtl number Pm-->0 the curves of neutral stability converge in the Hartmann number/Reynolds number plane approximating the stability curve obtained in the inductionless limit Pm=0. The numerical solutions for Pm=0 indicate the existence of a lower limit of the shear rate. For large Pm the curves scale with the magnetic Reynolds number of the outer cylinder but the flow is always stable for magnetic Prandtl number unity as is typical for double-diffusive instabilities. We are particularly interested to know the minimum Hartmann number for neutral stability. For models with resting or almost resting inner cylinder and with perfect-conducting cylinder material the minimum Hartmann number occurs for a radius ratio of 0.9. The corresponding critical Reynolds numbers are smaller than 10.000.
description: 14 pages, 12 figures
Barriers to Educational Use of Digitized Primary Source Documents: A Survey
Creators: name: McClusky, Anne
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2003
Subjects: Digitized Archives Education--Primary Sources
Digital Libraries--United States
Educational Technology--Electronic Records

description: Many primary sources are digitized and freely available on the Internet. This type of resource represents a valuable opportunity for many social studies educators. This paper reports on the findings of a survey designed to enquire into the use of this type of resource by educators at the middle and high school level. The survey data indicates that barriers to use include insufficient computer access in the classroom as well as time and curriculum constraints created by end of grade testing and North Carolina curriculum standards.
Caroxylon glabrescens Akhani & E. H. Roalson
Creators: name: Mucina, Ladislav
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Amaranthaceae
Caroxylon
Caroxylon glabrescens

description: 40. Caroxylon glabrescens (Burtt Davy) Akhani & E.H.Roalson in Int. J. Plant Sci. 168(6): 947 (2007).
 Basionym: ― Salsola glabrescens Burtt Davy in Man. Flow. Pl. & Ferns Transvaal 1: 50: 177 (1926).
 Type: ― SOUTH AFRICA. Near Bloemhoef, 4100 ft. elev., 12 February 1904, Burtt Davy 1496 (holotype K-000243951!; isotypes PRE-0370836-0!, PRE-0592860-0!, PRE-0592861-0!).
 Distribution: ― Botswana: southern Kalahari; Namibia? (see Aellen, 1967); South Africa (NW, FS, NC): widely distributed in eastern Bushmanland, eastern Upper Karoo, salt pan regions of western Free State and adjacent North-West Province.
description: Published as part of Mucina, Ladislav, 2017, Caroxylon (Chenopodiaceae s. str.) in continental southern Africa and Madagascar: a preliminary nomenclatural synopsis and biogeographical considerations, pp. 151-178 in Phytotaxa 312 (2) on page 163, DOI: 10.11646/phytotaxa.312.2.1, http://zenodo.org/record/13701544
Reconstructing an Event.pdf
Creators: name: Sen, Asoka
Publisher: name: figshare
Year: 2023
Subjects: Other Indigenous studies not elsewhere classified

description: Introduction
 The early historicization of Adivasi anti-colonial movements in Jharkhand is
 replete with methodological problems. Since the celebration of the centenary of
 the Great Rebellion of 1857–8, scholars reconstructing narratives of anti-colonial
 struggles sought to prove that these were truly pan-Indian in character (Majum-
 dar 1962: 196–9).Those belonging to the nationalist and leftist schools tended to
 subsume these struggles, to use Ranajit Guha’s expression, under the ‘pre-
 history’ of the national and socialist-communist movements (Guha 1983: 4).
 Even if nationalism had inspired the making of provincial narratives where tribal
 or Adivasi struggles found space (Datta 1940, 1957: 66–76; Roy Choudhury
 1959: 74–9; Das Gupta 2007: 96–119; Sen 2008: 82–107), the historiographic
 agenda were more or less to enrich the national mainstream.
MS Gr. class. c. 2 320
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 339 col. 21. Philodemus, De Stoicis
Drawing by Giuseppe (?) Casanova
Optical Dipole Structure and Orientation of GaN Defect Single-Photon Emitters
Creators: name: Geng, Yifei
name: Jena, Debdeep
name: Fuchs, Gregory D.
name: Zipfel, Warren R.
name: Rana, Farhan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: GaN has recently been shown to host bright, photostable, defect single photon emitters in the 600-700 nm wavelength range that are promising for quantum applications. The nature and origin of these defect emitters remain elusive. In this work, we study the optical dipole structures and orientations of these defect emitters using the defocused imaging technique. In this technique, the far-field radiation pattern of an emitter in the Fourier plane is imaged to obtain information about the structure of the optical dipole moment and its orientation in 3D. Our experimental results, backed by numerical simulations, show that these defect emitters in GaN exhibit a single dipole moment that is oriented almost perpendicular to the wurtzite crystal c-axis. Data collected from many different emitters shows that the angular orientation of the dipole moment in the plane perpendicular to the c-axis exhibits a distribution that shows peaks centered at the angles corresponding to the nearest Ga-N bonds and also at the angles corresponding to the nearest Ga-Ga (or N-N) directions. Moreover, the in-plane angular distribution shows little difference among defect emitters with different emission wavelengths in the 600-700 nm range. Our work sheds light on the nature and origin of these GaN defect emitters.
description: 15 pages, 4 figures
Sicherheit im Wohnumfeld - Glossar
Creators: name: (:Unkn) Unknown
Publisher: name: Universität Tübingen
Year: 2014
Subjects: subject: Sicherheit , Wohnen , Glossar
subject: 360

description: Das Verbundprojekt transit zielt darauf ab, transdisziplinäre Sicherheitsstrategien für Polizei, Kommunen und Wohnungswirtschaft zu erarbeiten, die in die Alltagsorganisation und in das Alltagshandeln dieser Beteiligten eingebettet werden sollen. Kriminalprävention im Städtebau ist ein komplexes Konstrukt, das neben der baulich-räumlichen Ebene auch die sozialräumliche Ebene einbeziehen muss und neben staatlicher Vorsorge auch als gesamtgesellschaftliche Aufgabe zu verstehen ist. Die Zusammenarbeit von Polizei, Wohnungswirtschaft und Kommune in diesem Bereich ist eine wesentliche Voraussetzung für das Gelingen. Eine gut funktionierende Zusammenarbeit setzt voraus, dass man sich „versteht“ und verständigen kann. Das Thema Sicherheit im Wohnbereich wird von Polizei, Wohnungswirtschaft und Kommunen bei grundsätzlich ähnlichen Zielen aus sehr unterschiedlicher Sicht betrachtet. Hinzu kommt die sozial-, raum- und kommunalwissenschaftliche Sicht auf das Themenfeld. Im Zusammenwirken verwendete Begriffe sind mit sich zum Teil unterscheidenden impliziten Inhalten und Definitionen verbunden. Das vorliegende Glossar soll im Zusammenhang mit dem Themenfeld „Sicherheit im Wohnbereich“ häufig verwendete Begriffe definieren und erläutern. Es dient der Verständigung der beteiligten Akteursgruppen im Verbundprojekt, kann aber auch der Verständigung darüber hinaus dienen. Bei der Erstellung konnte unter anderem auf das Glossar des DynASS-Projektes1 (Abt 2013) als Vorarbeit zurückgegriffen werden, in dem zentrale Begriffe aus dem Bereich der Sicherheitsforschung und -produktion definiert wurden. Das Glossar ist als Arbeitsdokument zu verstehen. Obwohl die vorliegenden Definitionen und Erläuterungen mit den Projektbeteiligten und dem Beirat des Projektes diskutiert und abgestimmt wurden, können im Laufe der Projektarbeit Definitionen verändert und verfeinert werden. Auch können neue Begriffe in der Projektarbeit „auftauchen“, über die sich die Beteiligten verständigen müssen und die in ein solches Glossar aufgenommen werden sollten. Das Glossar soll also auch als Anregung zur Diskussion über den Umgang mit dem einen oder anderen Begriff dienen.
L’espace dans « La femme adultère » d’Albert Camus et « La Sirène » ou « Al Nadaha » de Youssef Idriss
Creators: name: Gharib, Manal
Publisher: name: figshare
Year: 2023
Subjects: Comparative and transnational literature

description: L’espace dans « La femme adultère » d’Albert Camus et « La Sirène » ou « Al Nadaha » de Youssef Idriss
Numerical exploration of the Aging effects in spin systems
Creators: name: da Silva, Roberto
name: Tomé, Tânia
name: de Oliveira, Mário José
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: An interesting concept that has been underexplored in the context of time-dependent simulations is the correlation of total magnetization, $C(t)$%. One of its main advantages over directly studying magnetization is that we do not need to meticulously prepare initial magnetizations. This is because the evolutions are computed from initial states with spins that are independent and completely random. In this paper, we take an important step in demonstrating that even for time evolutions from other initial conditions, $C(t_{0},t)$, a suitable scaling can be performed to obtain universal power laws. We specifically consider the significant role played by the second moment of magnetization. Additionally, we complement the study by conducting a recent investigation of random matrices, which are applied to determine the critical properties of the system. Our results show that the aging in the time series of magnetization influences the spectral properties of matrices and their ability to determine the critical temperature of systems.
description: 14 pages, 6 figures
Empirical Coordination with Channel Feedback and Strictly Causal or Causal Encoding
Creators: name: Treust, Maël Le
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In multi-terminal networks, feedback increases the capacity region and helps communication devices to coordinate. In this article, we deepen the relationship between coordination and feedback by considering a point-to-point scenario with an information source and a noisy channel. Empirical coordination is achievable if the encoder and the decoder can implement sequences of symbols that are jointly typical for a target probability distribution. We investigate the impact of feedback when the encoder has strictly causal or causal observation of the source symbols. For both cases, we characterize the optimal information constraints and we show that feedback improves coordination possibilities. Surprisingly, feedback also reduces the number of auxiliary random variables and simplifies the information constraints. For empirical coordination with strictly causal encoding and feedback, the information constraint does not involve auxiliary random variable anymore.
description: 5 pages, 6 figures, presented at IEEE International Symposium on Information Theory (ISIT) 2015
Strain, Young's modulus, and structural transition of EuTiO3 thin films probed by micro-mechanical methods
Creators: name: Manca, Nicola
name: Tarsi, Gaia
name: Kalaboukhov, Alexei
name: Bisio, Francesco
name: Caglieris, Federico
name: Lombardi, Floriana
name: Marré, Daniele
name: Pellegrino, Luca
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: EuTiO3 (ETO) is a well-known complex oxide mainly investigated for its magnetic properties and its incipient ferro-electricity. In this work, we demonstrate the realization of suspended micro-mechanical structures, such as cantilevers and micro-bridges, from 100 nm-thick single-crystal epitaxial ETO films deposited on top of SrTiO3(100) substrates. By combining profile analysis and resonance frequency measurements of these devices, we obtain the Young's modulus, strain, and strain gradients of the ETO thin films. Moreover, we investigate the ETO anti-ferro-distorsive transition by temperature-dependent characterizations, which show a non-monotonic and hysteretic mechanical response. Comparison between experimental and literature data allows us to weight the contribution from thermal expansion and softening to the tuning slope, while a full understanding of the origin of such a wide hysteresis is still missing. We also discuss the influence of oxygen vacancies on the reported mechanical properties by comparing stoichiometric and oxygen-deficient samples.
description: 8 pages, 5 figures; 7 Supplementary Material sections
A Rényi entropy perspective on topological order in classical toric code models
Creators: name: Helmes, Johannes
name: Stéphan, Jean-Marie
name: Trebst, Simon
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Concepts of information theory are increasingly used to characterize collective phenomena in condensed matter systems, such as the use of entanglement entropies to identify emergent topological order in interacting quantum many-body systems. Here we employ classical variants of these concepts, in particular Rényi entropies and their associated mutual information, to identify topological order in classical systems. Like for their quantum counterparts, the presence of topological order can be identified in such classical systems via a universal, subleading contribution to the prevalent volume and boundary laws of the classical Rényi entropies. We demonstrate that an additional subleading $O(1)$ contribution generically arises for all Rényi entropies $S^{(n)}$ with $n \geq 2$ when driving the system towards a phase transition, e.g. into a conventionally ordered phase. This additional subleading term, which we dub connectivity contribution, tracks back to partial subsystem ordering and is proportional to the number of connected parts in a given bipartition. Notably, the Levin-Wen summation scheme -- typically used to extract the topological contribution to the Rényi entropies -- does not fully eliminate this additional connectivity contribution in this classical context. This indicates that the distillation of topological order from Rényi entropies requires an additional level of scrutiny to distinguish topological from non-topological $O(1)$ contributions. This is also the case for quantum systems, for which we discuss which entropies are sensitive to these connectivity contributions. We showcase these findings by extensive numerical simulations of a classical variant of the toric code model, for which we study the stability of topological order in the presence of a magnetic field and at finite temperatures from a Rényi entropy perspective.
description: 17 pages, 19 figures
Caroxylon glabrescens var. apiculatum Mucina 2017, comb. nov.
Creators: name: Mucina, Ladislav
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Amaranthaceae
Caroxylon
Caroxylon glabrescens
Caroxylon glabrescens var. apiculatum (c.a.sm. ex botsch.) mucina

description: 41. Caroxylon glabrescens var. apiculatum (C.A.Sm. ex Botsch.) Mucina comb. nov.
 Basionym: ― Salsola glabrescens var. apiculata C.A.Sm. ex Botsch. in Novosti Sist. Vyssh. Rast. 11: 143 (1974d).
 Type: ― [SOUTH AFRICA]. Zeyher 1443 (holotype K-000243953!, see Botschantzev 1974d: 144; isotype K-000243954!).
 ‒ Salsola apiculata C.A.Sm., in schedis (K-000243953!).
 Notes: ― The name ‘ S. apiculata ’ was suggested by C. A. Smith (September 1928) in a note on the sheet of the holotype. Botschantzev (1974d) clearly based the name of his variety on the Smith’s suggestion; hence C.A. Smith should also be cited as author.
 Distribution: ― South Africa (FS): Boshoff Division.
description: Published as part of Mucina, Ladislav, 2017, Caroxylon (Chenopodiaceae s. str.) in continental southern Africa and Madagascar: a preliminary nomenclatural synopsis and biogeographical considerations, pp. 151-178 in Phytotaxa 312 (2) on page 163, DOI: 10.11646/phytotaxa.312.2.1, http://zenodo.org/record/13701544
Coherence in parametric fluorescence
Creators: name: Onodera, T.
name: Liscidini, Marco
name: Sipe, J. E.
name: Helt, L. G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate spontaneous four wave mixing (SFWM) in a single-channel side-coupled integrated spaced sequence of resonators (SCISSOR). Analytic expressions for the number of photon pairs generated, as well as the biphoton wave function (joint spectral amplitude) describing the pairs, are derived and numerically computed for different pump pulse durations and numbers of ring resonators. In the limit of a long input pump pulse, we show a strong analogy between super-linear scaling of generation efficiency with respect to the number of rings in the structure and Dicke superradiance. More generally, we discuss in detail the factors that influence the shape of the biphoton wave function, as well as the conditions for observing super-SFWM.
Fractional Poisson Fields and Martingales
Creators: name: Aletti, Giacomo
name: Leonenko, Nikolai
name: Merzbach, Ely
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We present new properties for the Fractional Poisson process and the Fractional Poisson field on the plane. A martingale characterization for Fractional Poisson processes is given. We extend this result to Fractional Poisson fields, obtaining some other characterizations. The fractional differential equations are studied. We consider a more general Mixed-Fractional Poisson process and show that this process is the stochastic solution of a system of fractional differential-difference equations. Finally, we give some simulations of the Fractional Poisson field on the plane.
MS Gr. class. c. 2 321
Creators: name: Oxyrhynchus Papyri
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 470316
subject: Latin and classical Greek languages

description: P.Herc. 339 col. 10. Philodemus, De Stoicis
Drawing by Giuseppe (?) Casanova
Black hole interior Petz map reconstruction and Papadodimas-Raju proposal
Creators: name: Vardian, Niloofar
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the reconstruction of the bulk operators in AdS/CFT when the geometry contains a black hole. The black hole exterior can be mapped to the CFT via a very simple Petz map which coincides with the HKLL map reconstruction of the black hole exterior. For the interior modes of the bulk theory, using the definition of the Petz recovery channel in modular theory, we can find the mapping from the black hole interior to the dual boundary theory. In the case of the evaporating black hole, it is expected that the interior modes map to some operators which have support only on the bath system, the cavity that absorbs the Hawking radiation. The most important observation that we have here is that in the case that we have a typical black hole microstate in the bulk, the CFT dual of the interior modes that we can find using the Petz recovery channel are exactly the operators which so-called "mirror operator " in the Papadodimas-Raju proposal. Therefore, we can interpret Papadodimas-Raju proposal as an example of the Petz map reconstruction. It may help us answer some open questions about their procedure.
description: 40 pages and 4 figures
All two-qubit states that are steerable via Clauser-Horne-Shimony-Holt-type correlations are Bell nonlocal
Creators: name: Girdhar, Parth
name: Cavalcanti, Eric G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive a new inequality that is necessary and sufficient to show EPR-steering in a scenario employing only correlations between two arbitrary dichotomic measurements on each party. Thus the inequality is a complete steering analogy of the CHSH inequality, a generalisation of the result of Cavalcanti et al, JOSA B, 32(4), A74 (2015). We show that violation of the inequality only requires measuring over equivalence classes of mutually unbiased measurements on the trusted party and in fact assuming a general two qubit system arbitrary pairs of distinct projective measurements at the trusted party are equally useful. Via this it is found that for a given state the maximum violation of our EPR-steering inequality is equal to that for the CHSH inequality, so all states that are EPR-steerable with CHSH-type correlations are also Bell nonlocal.
description: 5+4 pages. V2: close to journal version, simpler proof of steering inequality, examine dichotomic POVM case