cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An Introduction to the Quantum Backflow Effect
Creators: name: Yearsley, J. M.
name: Halliwell, J. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present an introduction to the backflow effect in quantum mechanics -- the phenomenon in which a state consisting entirely of positive momenta may have negative current and the probability flows in the opposite direction to the momentum. We show that the effect is present even for simple states consisting of superpositions of gaussian wave packets, although the size of the effect is small. Inspired by the numerical results of Penz et al, we present a wave function whose current at any time may be computed analytically and which has periods of significant backflow, with a backwards flux equal to about 70 percent of the maximum possible backflow, a dimensionless number $c_{bm} \approx 0.04 $, discovered by Bracken and Melloy. This number has the unusual property of being independent of $\hbar$ (and also of all other parameters of the model), despite corresponding to a quantum-mechanical effect, and we shed some light on this surprising property by considering the classical limit of backflow. We conclude by discussing a specific measurement model in which backflow may be identified in certain measurable probabilities.
description: 10 pages, 9 figures. To appear in proceedings of the 2012 DICE Conference (edited by T.Elze)
ALGORITHMIZATION IN SOCIO-ECONOMIC FIELDS: UNVEILING THE TRANSFORMATIVE POTENTIAL
Creators: name: Nurimov, P.B.
name: Baxitjanova, K.
name: Uzakbaeva, S.
Publisher: name: Zenodo
Year: 2023

description: The integration of algorithms into socio-economic fields has been rapidly gaining momentum in recent years, promising to revolutionize decision-making processes, resource allocation, and overall efficiency. This article explores the concept of algorithmization within socio-economic domains, delving into its various applications, benefits, challenges, and ethical considerations. As algorithms continue to reshape our societies and economies, understanding their impact becomes paramount for policymakers, researchers, and stakeholders alike.
Science Blogs as Critique — Building Public Identities in the Field of Translational Research
Creators: name: Hendriks, Barbara
name: Reinhart, Martin
Publisher: name: Humboldt-Universität zu Berlin
Year: 2020
Subjects: subject: translational research
subject: clinician scientists
subject: science blogs
subject: sociology of critique
subject: sociology of professions
subject: science communication
subject: public identity
subject: 300 Sozialwissenschaften

description: Clinician scientists are pivotal figures in translational research. Although the discourse on translational research is favorable to clinician scientists, their role within it and their view of themselves has received little attention. In this exploratory study, we analyze the view of clinician scientists on translational research by drawing on surveillance studies and the pragmatic sociology of critique and examining the potential for critique of science blogs. From analyzing science blogs and the blogging selves they represent, we find a fundamental dilemma of being torn between the two worlds of clinic and research. Although translational research seeks to support clinician scientists, it intensifies this conflict even further. The arguments of clinician scientist-bloggers are emotionally charged with feelings of contradiction, unpredictability, and skepticism. These feelings undergird a critical agenda that shows indignation as the result of being a pivotal figure in the discourse on translational research.
Bose-Einstein condensation in a minimal inhomogeneous system
Creators: name: Gaul, Christopher
name: Schiefele, Jürgen
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the effects of repulsive interaction and disorder on Bosons in a two-site Bose-Hubbard system, which provides a simple model of the dirty boson problem. By comparison with exact numerical results, we demonstrate how a straightforward application of the Bogoliubov approximation fails even to deliver a qualitatively correct picture: It wrongly predicts an increase of the condensate depletion due to disorder. We show that, in the presence of disorder, the noncommutative character of the condensate operator has to be retained for a correct description of the system.
description: 6 pages, 4 figures
Calibration of Probabilistic Ensemble Forecasts for Indian Summer Monsoon Rainfall: A Non-Gaussian Approach
Creators: name: Acharya, Nachiketa
Publisher: name: Columbia University
Year: 2018
Subjects: Monsoons--Forecasting
Rain and rainfall--Forecasting
Rain and rainfall--Mathematical models
Long-range weather forecasting

description: Due to the large variability of seasonal Indian summer monsoon rainfall (ISMR), the user community should be given probabilistic forecasts that convey the inherent uncertainty within the prediction. Probabilistic seasonal prediction can be done based on the general circulation models (GCM)’s outputs, however the output of these ensemble predictions cannot be used directly and requires further calibration in order to produce reliable forecasts. The common approach to make such probabilistic forecast is to calibrate the deterministic forecast from the model and then convert to probabilistic space using Gaussian distribution. Because neither observation for seasonal ISMR nor the GCM’s forecast follow a Gaussian distribution, we introduce a non-gaussian model viz., Extended Logistic Regression (ELR) for calibration method. ELR has been implemented on coupled GCMs of the North American Multi-Model Ensemble (NMME) project over 1982-2010 following a leave-one-year-out cross-validation manner. The skill of the proposed method has been evaluated against observed rainfall and found to be a good reliable and well calibrated forecast.
An investigation into the anionic thia-Fries rearrangement in metal pi-complexes
Creators: name: Geanne Marize, Romero Boston
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2022
Subjects: subject: Anionic thia-Fries rearrangement;
subject: ferrocene
subject: cobaltocenium
subject: ortho lithiation
subject: DFT calculations
subject: DFT Berechnungen
subject: Anionische Thia-Fries-Umlagerung
subject: Ferrocen
subject: Cobaltocenium
subject: ortho-Lithiierung
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Ferrocenyl triflate and 1,1'-ferrocenediyl ditriflate are known to undergo anionic thia-Fries rearrangements in high yields at low temperature. The double rearrangement of 1,1'-ferrocenediyl ditriflate leads in an intriguing manner exclusively to the meso diastereomer. Through experimental and theoretical research using DFT calculations, the understanding of the mechanism of the anionic thia-Fries rearrangement was expanded, and the use of this reaction and its product was broadened. The rearrangement product before hydrolysis was isolated and crystallized, and the crystal structure analysis was used as a benchmark for the selection of functionals, basis sets, and pseudopotentials. This thesis demonstrates the mechanism of the anionic thia-Fries rearrangement for ferrocenyl triflate and 1,1'-ferrocenediyl ditriflate and explains the reason for the unprecedent meso diastereoselectivity of the double anionic thia-Fries rearrangement of the latter. The scope of the reaction was expanded to ferrocenyl fluorosulfonate, and for the first time, to a cobalt complex. The anionic thia-Fries rearrangement product of the cobaltocenium salts proved more stable than the corresponding ferrocene derivative. The investigation of the reactivity of new ferrocenyl sulfonates also led to the synthesis of a rare ferrocene annellated oxathiine derivative. The mono anionic thia-Fries rearrangement product was explored as a new electrophilic partner for Suzuki-Miyaura cross-coupling, and the investigation around it gave rise to the syntheses of fluorosulfonylferrocene in addition to (trifluoromethylsulfonyl)ferrocene. These two new ferrocene derivatives were investigated as ortho metalating groups at ferrocene, and they performed very well as such.
Gentiana tenella Rottboell 1770
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: G. tenella Rottboell 1770 (G. glacialis Murith ap. Vill. 1787ubi cit.falsa«A.Thomas»1) Cat. 255 und 429. Bis 3190m; abwärtsbis 1520m. l: Dents Blanches (Briquet); La Golette (idem); Col d'Emaney (Coquoz, Favarger); Barberine (Exk Soc. Murith.); zwischen Col und Pic de Tanneverge (Briquet); Cheval Blanc (idem). 3: Hohe Stellen: Gornergrat bei Zermatt, 3115m (Braun-Blanquet 1919); Oberrothorn bei Zer- matt, 3190m (idem 1919); tiefe Stellen: zwischen Pramousse und La Monta im Val d'Arolla, 1850 m (Villaret 1947); noch tiefer im Saastal: Zermeiggern-Almagell-Grund, 1720-1560 m (viele Be- obachter) und noch bei Balen,1520m (A. Keller). - 3a:Laggintal zwischen dem Oberstafel und der Eselfurgge (Becherer und Thommen). - 4: Binntal, mehrfach: Breithorn (Binz), Imfeld- Albrun (Becherer), Schweifengrat-Hölzlihorn (F. Schönenberger); Blindental, 2800 m (B. C.W.), 1 Vgl. Vaccari Lit. 1911a, S. 246-247. Vorherrschend scheint die Form mit trübvioletten Blüten zu sein (var. glacialis [Murith] Vac- cari). Die Form mit blauen Blüten (var. typica Vaccari) z.B.: Gemmi (Briquet und Cavillier); Grund und Bodmen im Saastal (Becherer). Mit weissen Blüten: Roter Totz und Felsenhorn an der Gemmi. 2700-2800 m (Gilomen); bei der Konkordiahütte, 2860m (Oberson).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Proton Radiation Damage Experiment on P-Channel CCD for an X-ray CCD camera onboard the Astro-H satellite
Creators: name: Mori, Koji
name: Nishioka, Yusuke
name: Ohura, Satoshi
name: Koura, Yoshiaki
name: Yamauchi, Makoto
name: Nakajima, Hiroshi
name: Ueda, Shutaro
name: Kan, Hiroaki
name: Anabuki, Naohisa
name: Nagino, Ryo
name: Hayashida, Kiyoshi
name: Tsunemi, Hiroshi
name: Kohmura, Takayoshi
name: Ikeda, Shoma
name: Murakami, Hiroshi
name: Ozaki, Masanobu
name: Dotani, Tadayasu
name: Maeda, Yukie
name: Sagara, Kenshi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We report on a proton radiation damage experiment on P-channel CCD newly developed for an X-ray CCD camera onboard the Astro-H satellite. The device was exposed up to 10^9 protons cm^{-2} at 6.7 MeV. The charge transfer inefficiency (CTI) was measured as a function of radiation dose. In comparison with the CTI currently measured in the CCD camera onboard the Suzaku satellite for 6 years, we confirmed that the new type of P-channel CCD is radiation tolerant enough for space use. We also confirmed that a charge-injection technique and lowering the operating temperature efficiently work to reduce the CTI for our device. A comparison with other P-channel CCD experiments is also discussed.
description: 21 pages, 7 figures, accepted for publication in Nucl. Instr. and Meth. A
Impact of bacterial biomass on soil particle wettability under various moisture conditions
Creators: name: Karagulyan, Mariam
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2022
Subjects: subject: Soil water repellency
subject: bacterial cell surface hydrophobicity
subject: water stress
subject: community composition
subject: Wasserabweisungsvermögen
subject: Boden
subject: Oberflächehydrophobie
subject: bakterielle Zellen
subject: mikrobielle Gemeinschaft
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Prolonged droughts render the development of soil water repellency (SWR), which in turn impacts the infiltration and distribution of water through the soil profile, exposing soil microorganisms to water stress. Soil microorganisms (particularly necromass) significantly contribute to soil organic matter (SOM), which is believed to be the source of water repellency in soil. SWR-induced water stress is hypothesized to increase bacterial cell surface hydrophobicity (CSH). Interaction of bacterial cells with soil particles will change the wetting properties of the particles, with stronger impact of stressed cells. Furthermore, variations in soil moisture can lead to increased SWR associated with shifts in microbial abundance and community structure. Growth of all the strains investigated was inhibited by both matric and osmotic stress, and in both growth conditions. However, changes in cell surface hydrophobicity (CSH) varied between different stress types and growth conditions. The CSH of B. subtilis and P. fluorescens increased with increasing stress level, R. erythropolis and M. pallens exhibited generally high but constant contact angle (CA) at all stress levels, while A. chlorophenolicus A6 and N. aromaticivorans exhibited rather inconsistent response to growth conditions and type of stress. In none of the experiments, the CA exceeded 110°. This contact angle thus seems to represent an upper limit for CSH. In an association with quartz minerals, B. subtilis and P. fluorescens rendered the surface of the minerals hydrophobic. The degree of initial hydrophobicity of the CMAs was significantly higher with osmotically stressed cells. However, the high degree of water repellency did not persist, probably due to biomass loss. The response of the two soils to fluctuations in water content (WC) varied, depending on water content and the initial level of SWR, with no changes observed in CA and community composition of the initially more hydrophobic soil. Changes were observed in moderately hydrophobic soil, particularly under lower WC. The results reported in this dissertation show the significant role of bacterial surface hydrophobicity in the development of SWR. While stress induced CSH has only a short-term impact on water repellency in soil, Prolonged dry conditions lead to a shift towards more adapted microbial community with higher CSH.
Lisa Deutscher, Mirjam Kaiser, Sixt Wetzler (Hrsg.). Das Schwert - Symbol und Waffe
Creators: name: Gabriel, Amanda
Publisher: name: DGUF e.V.
Year: 2016

description: Rezension zu: Lisa Deutscher, Mirjam Kaiser, Sixt Wetzler (Hrsg.). Das Schwert - Symbol und Waffe. Beiträge zur geisteswissenschaftlichen Nachwuchstagung vom 19.-20. Oktober 2012 in Freiburg/ Breisgau. Freiburger Archäologische Studien 7, 2014. Rahden/Westfalen: Verlag Marie Leidorf. ISSN 1437-3327. 225 Seiten, 91 Abbildungen und 18 Tabellen sowie 2 Tafeln.
description: Archäologische Informationen, Bd. 39 (2016): Archäologische Informationen
SED-inferred properties and morphology of Lyman-break galaxies at $z\sim 1$ in the CDF-S
Creators: name: Chen, Z.
name: Shu, C. G.
name: Burgarella, D.
name: Buat, V.
name: Huang, J. -S.
name: Luo, Z. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: After carefully cross-identifying a previously discovered GALEX-selected Lyman Break Galaxy (LBG) candidates one-to-one with their optical counterparts in the field of the CDF-S, we re-estimate their photometric redshifts using multi-wavelength data from UV, optical to NIR. We refine a new updated sample of 383 LBGs at $0.7\la z \la 1.4$. Most LBGs are classified as starburst and irregular types. Ages spread from several Myr to 1.5Gyr. Their dust-corrected star formation rates (SFRs) and stellar masses ($M_*$) are from $4\my$ to $220\my$ and from $2.3\times 10^8 \msun$ to $4 \times 10^{11} \msun$. The rest-frame FUV luminosity function of LBGs are presented. LBGs of irregular types mainly distribute along the "main sequence" of star forming galaxies while most LBGs of starburst types locate in the starburst region. A "downsizing" effect is clearly found and LBGs distribute in the "blue" cloud. HST images in F606W ($V$ band) and F850LP ($z$ band) are taken from the GEMS and GOODS-S surveys. SExtractor and GALFIT are applied to get their morphological parameters. A morphological sample of 142 LBGs with reliable results of $\sersic$ and sizes in both bands is defined. We find that LBGs at $z\sim 1 $ are dominated by disk-like galaxies. Correlations between photometric and morphological properties of LBGs are investigated. Strong correlations between their half-light radii and $M_*$, i.e., size-stellar mass relations, are found in both bands. Physical connections between correlations and the "downsizing" effect are discussed.
description: 26 pages, 30 figures, 6 tables, accepted by MNRAS
IGR J19308+0530: Roche lobe overflow on to a compact object from a donor 1.8 times as massive
Creators: name: Ratti, E. M.
name: van Grunsven, T. F. J.
name: Torres, M. A. P.
name: Jonker, P. G.
name: Miller-Jones, J. C. A.
name: Hessels, J. W. T.
name: Van Winckel, H.
name: van der Sluys, M.
name: Nelemans, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present phase-resolved spectroscopy and photometry of the optical counterpart to the X-ray binary IGR J19308+0530. Ellipsoidal modulations in the light curve show that the F-type companion star in the system is Roche lobe filling. The optical spectra are dominated by absorption features from the donor star, with ~10-20 per cent disc contribution to the optical continuum. We measure an orbital period of 14.662+-0.001 h, a radial velocity semiamplitude for the companion star of K2 = 91.4+-1.4 kms-1 and a rotational broadening of vsini = 108.9+-0.6 kms-1. From K2 and vsini, given that the donor star is filling its Roche lobe, we derive a mass ratio of q = M2/M1=1.78+-0.04, which is typically considered to be too large for stable Roche lobe overflow. Our observations support an inclination of ~50 degrees. The accretor in IGR J19308+0530 is most likely a white dwarf, although a neutron star cannot entirely be excluded.
description: Accepted for publication in MNRAS (letter)
Anna-Latifa Mourad, Rise of the Hyksos. Egypt and the Levant from the Middle Kingdom to the Early Second Intermediate Period
Creators: name: Matić, Uroš
Publisher: name: DGUF e.V.
Year: 2016

description: Rezension zu: Anna-Latifa Mourad, Rise of the Hyksos. Egypt and the Levant from the Middle Kingdom to the Early Second Intermediate Period. Archaeopress Egyptology 11, 2015. Oxford: Archaeopress. xiv+314 pages. ISBN 9781784911331.
description: Archäologische Informationen, Bd. 39 (2016): Archäologische Informationen
Natural products isolation from Trichoderma reesei
Creators: name: Shenouda, Mary Labib Kamel Labib
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2022
Subjects: subject: Natural product
subject: Biosynthesis
subject: Trichoderma reesei
subject: Ilicicolin-H
subject: Heterologous expression
subject: Naturstoffe
subject: Biosynthese
subject: heterologer Ausdruck
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: The focus of the present work is to develop Trichoderma reesei as a heterologous host for the production of natural products and to explore the biosynthetic potential of this fungus by expressing one of its cryptic PKS-NRPS gene clusters. Developing T. reesei as a heterologous host was first done by knocking out two of the main genes from the sorbicillin biosynthetic gene cluster in the auxotrophic strain T. reesei QM6a Δtmus53 Δpyr4 to develop a strain with cleaner metabolic background. Afterwards, a new vector with native pdc promoter and pyr4 selection marker was constructed and used to express the polyketide synthase aspks1 under the activity of the native pdc promoter. The transformed T. reesei strains were able to produce the expected natural product 3-methylorcinaldehyde 40 on different media and types of waste materials such as orange peel, banana, kiwi and potato peel as well as barley straw. Quantification of the produced compound 40 on potato peel showed the ability of the strain to produce up to 128 mg·kg-1 dry weight potato peel. A second vector with two more native promoters (enolase and cDNA1 promoters) was constructed to allow the expression of more than one gene simultaneously in T. reesei. The new vector was then used to express the first two genes from the tenellin biosynthetic gene cluster, i.e. PKS-NRPS (encoded by tenS) and ER (encoded by tenC) under the activity of the pdc and cDNA1 promoters, respectively. T. reesei transformants expressing tenS and tenC showed the production of the expected compound pretenellin A 77 on different media. The new strain was also able to produce 77 on banana peel, but not on barley straw under the tested cultivation conditions. Bioinformatic analysis of the T. reesei genome revealed the presence of 11 PKS and two PKS-NRPS genes. Since no PKS-NRPS products have been previously reported from T. reesei, one of the two PKS-NRPS (TRIREDRAFT_58285) gene clusters in T. reesei was investigated. This was done first by overexpression of the transcription factor, which showed limited success due to the very low titre of the produced compound. Therefore, heterologous expression of this gene cluster was done in Aspergillus oryzae NSAR1, which confirmed that this gene cluster is responsible for the production of ilicicolin-H 72 in addition to many other intermediates and shunt products produced by the expression host.
title: Why We Can’t Solve the Opioid Problem
Creators: name: Coombs, Wayne F.
Publisher: name: University of Kentucky
Year: 2019

description: Appalachia’s opioid epidemic is a complex, systemic problem being addressed by limited intervention processes conceptualized through narrow disciplinary models that are not working. We need a new comprehensive, collaborative approach if we ever hope to find solutions to this problem.
description: Copyright:
This is an open access article published under the terms of the Creative Commons Attribution 4.0International License, which permits unrestricted use, distribution, and reproduction in any medium,provided that the original author(s) and the publication source are credited.
Janßen, Ursula. Gesellschaften im Wandel. Funerärer Aufwand und soziale Wirklichkeit im frühstaatlichen Ägypten anhand von Grabfunden aus Ur und Kafr Tarkhan
Creators: name: Wilde, Heike
Publisher: name: DGUF e.V.
Year: 2016

description: Rezension zu: Janßen, Ursula (2015). Gesellschaften im Wandel. Funerärer Aufwand und soziale Wirklichkeit im frühstaatlichen Ägypten anhand von Grabfunden aus Ur und Kafr Tarkhan. (Schriften zur Vorderasiatischen Archäologie 10). Wiesbaden: Harrassowitz. ISBN 978-3-447-10376-3. 308 Seiten, 26 Abb., 38 Diagramme, 18 Tabellen, 2 Karten.
description: Archäologische Informationen, Bd. 39 (2016): Archäologische Informationen
A Direct Sampling Method for Inverse Electromagnetic Medium Scattering
Creators: name: Ito, Kazufumi
name: Jin, Bangti
name: Zou, Jun
Publisher: name: arXiv
Year: 2012
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper, we study the inverse electromagnetic medium scattering problem of estimating the support and shape of medium scatterers from scattered electric or magnetic near-field data. We shall develop a novel direct sampling method based on an analysis of electromagnetic scattering and the behavior of the fundamental solution. The method is applicable even with one incident field and needs only to compute inner products of the measured scattered field with the fundamental solutions located at sampling points. Hence it is strictly direct, computationally very efficient, and highly tolerant to the presence of noise in the data. Two- and three-dimensional numerical experiments indicate that it can provide reliable support estimates of one single and multiple scatterers in case of both exact and highly noisy data.
description: 18 pages
Analytical approach for type-II semiconductor spherical core-shell quantum dots heterostructures with wide band gaps
Creators: name: Cheche, Tiberius O.
name: Chang, Yia-Chung
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A one-band model within the effective mass approximation is adopted to characterize the energy structure and oscillator strength of type-II semiconductor spherical core-shell quantum dots. The heteroepitaxial strain of the core-shell heterostructure is modeled by the elastic continuum approach. The model is applied to ZnTe/ZnSe core-shell, a wide band gap type-II heterostructure. The simulated absorption spectra are in fair agreement with available experimental results.
On the flips for a synchronized system
Creators: name: Choi, Hyekyoung
name: Kim, Young-One
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37B10, 54H20

description: It is shown that if an infinite synchronized system has a flip, then it has infinitely many non-conjugate flips, and that the result cannot be extended to the class of coded systems.
A line confusion-limited millimeter survey of Orion KL. III. Sulfur oxide species
Creators: name: Esplugues, G. B.
name: Tercero, B.
name: Cernicharo, J.
name: Goicoechea, J. R.
name: Palau, Aina
name: Marcelino, N.
name: Bell, T. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a study of the sulfur-bearing species detected in a line confusion-limited survey towards Orion KL performed with the IRAM 30m telescope in the range 80-281 GHz. The study is part of an analysis of the line survey divided into families of molecules. Our aim is to derive accurate physical conditions and molecular abundances in the different components of Orion KL from observed SO and SO2 lines. First we assumed LTE conditions obtain rotational temperatures. We then used a radiative transfer model, assuming either LVG or LTE excitation to derive column densities of these molecules in the different components of Orion KL. We have detected 68 lines of SO, 34SO, 33SO, and S18O and 653 lines of SO2, 34SO2, 33SO2, SO18O and SO2 v2=1. We provide column densities for all of them and also upper limits for the column densities of S17O, 36SO, 34S18O, SO17O and 34SO2 v2=1 and for several undetected sulfur-bearing species. In addition, we present 2'x2' maps around Orion IRc2 of SO2 transitions with energies from 19 to 131 K and also maps with four transitions of SO, 34SO and 34SO2. We observe an elongation of the gas along the NE-SW direction. An unexpected emission peak appears at 20.5 km/s in most lines of SO and SO2. A study of the spatial distribution of this emission feature shows that it is a new component ~5" in diameter, which lies ~4" west of IRc2. We suggest the emission from this feature is related to shocks associated to the BN object. The highest column densities for SO and SO2 are found in the high-velocity plateau (a region dominated by shocks) and in the hot core. These values are up to three orders of magnitude higher than the results for the ridge components. We also find high column densities for their isotopologues in both components. Therefore, we conclude that SO and SO2 are good tracers, not only of regions affected by shocks, but also of regions with warm dense gas.
description: Paper (ref AA/2013/21285) accepted for publication by A&A. 52 Pages, 26 figures, 13 tables
title: Shifting Personas
title: A Case Study of Taylor Swift
titleType: Subtitle
Creators: name: Lyon, Lela
Publisher: name: University of Kentucky Libraries
Year: 2019

description: This thesis analyzes how Taylor Swift has changed the way she expresses her Southern identity, specifically her dialectal features, over the course of her career and through her switch from country music to pop music. There were two processes to assess the change in Swift’s speech: the production of /ai/ tokens in interviewed speech and the perception of dialectal change by fans in the comment sections of the interviews on YouTube. Seven interviews on YouTube and their comment sections were used as the data source for this study. Production of /ai/ was measured through an auditory analysis to determine whether tokens were monophthongal, diphthongal, or somewhere in the middle. Perception was evaluated by scraping the comments from the YouTube videos and running key word searches related to accent. The results of the production portion of the study confirm that there has been a decrease in monophthongal tokens of /ai/ from 2007-2019 in Swift’s speech. The results from the perception part of the study show that fans do notice a change in “sounding Southern” and try to explain that change through either labeling Swift as “fake” or by positing other theories related to Swift’s individual life experiences (such as moving around the country). The implications of this study point to how dialectal features are linked with identity performance, and also how non-linguists justify changing dialectal features.
description: Copyright © Lela R. Lyon 2019
Common effect of chemical and external pressures on the magnetic properties of RECoPO (RE = La, Pr)
Creators: name: Prando, G.
name: Bonfà, P.
name: Profeta, G.
name: Khasanov, R.
name: Bernardini, F.
name: Mazzani, M.
name: Brüning, E. M.
name: Pal, A.
name: Awana, V. P. S.
name: Grafe, H. -J.
name: Büchner, B.
name: De Renzi, R.
name: Carretta, P.
name: Sanna, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a detailed investigation of RECoPO (RE = La, Pr) and LaCoAsO materials performed by means of muon spin spectroscopy. Zero-field measurements show that the electrons localized on the Pr$^{3+}$ ions do not play any role in the static magnetic properties of the compounds. Magnetism at the local level is indeed fully dominated by the weakly-itinerant ferromagnetism from the Co sublattice only. The increase of the chemical pressure triggered by the different ionic radii of La$^{3+}$ and Pr$^{3+}$, on the other hand, plays a crucial role in enhancing the value of the magnetic critical temperature and can be mimicked by the application of external hydrostatic pressure up to 24 kbar. A sharp discontinuity in the local magnetic field at the muon site in LaCoPO at around 5 kbar suggests a sizeable modification in the band structure of the material upon increasing pressure. This scenario is qualitatively supported by \emph{ab-initio} density-functional theory calculations.
description: 13 pages, 10 figures
Unveiling the detailed density and velocity structures of the protostellar core B335
Creators: name: Kurono, Yasutaka
name: Saito, Masao
name: Kamazaki, Takeshi
name: Morita, Koh-Ichiro
name: Kawabe, Ryohei
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an observational study of the protostellar core B335 harboring a low-mass Class 0 source. The observations of the H13CO+(J=1-0) line emission were carried out using the Nobeyama 45 m telescope and Nobeyama Millimeter Array. Our combined image of the interferometer and single-dish data depicts detailed structures of the dense envelope within the core. We found that the core has a radial density profile of n(r) prop. r^-p and a reliable difference in the power-law indices between the outer and inner regions of the core: p~2 for r >= 4000 AU and p ~ 1.5 for r <= 4000 AU}. The dense core shows a slight overall velocity gradient of ~1.0 km s^-1 over the scale of 20,000 AU across the outflow axis. We believe that this velocity gradient represents a solid-body-like rotation of the core. The dense envelope has a quite symmetrical velocity structure with a remarkable line broadening toward the core center, which is especially prominent in the position-velocity diagram across the outflow axis. The model calculations of position-velocity diagrams do a good job of reproducing observational results using the collapse model of an isothermal sphere in which the core has an inner free-fall region and an outer region conserving the conditions at the formation stage of a central stellar object. We derived a central stellar mass of ~0.1 M_sun, and suggest a small inward velocity, v(r>r_inf) ~ 0 km s^-1 in the outer core at >= 4000 AU. We concluded that our data can be well explained by gravitational collapse with a quasi-static initial condition, such as Shu's model, or by the isothermal collapse of a marginally critical Bonnor-Ebert sphere.
description: to be published in ApJ, 37 pages, 11 figures
title: Ensaios em mesa sísmica de um modelo de casca ultrafina pré-fabricada
Creators: name: Candeias, Paulo
name: Guerreiro, Luís
Publisher: name: LNEC
Year: 2023

description: No âmbito do projeto Pre-Shell, Prefabricated Ultra-Thin Concrete Shells, foi realizado um conjunto de ensaios na mesa sísmica LNEC 3D com um modelo em escala reduzida 1:3 do protótipo desenvolvido. Foi realizado um extenso protocolo de ensaio durante o qual foram impostas ações sísmicas horizontais em duas direções ortogonais. A ação sísmica de referência, gerada a partir de um espectro regulamentar da NP EN 1998 1:2010, foi escalada por diversos fatores multiplicativos desde 0,25 até 4,00 e aplicada sequencialmente. O modelo foi instrumentado com acelerómetros em vários pontos, para estimar as forças de inércia geradas, e transdutores de deslocamento nas juntas entre elementos pré-fabricados, para registar eventuais movimentos relativos. As propriedades dinâmicas (frequências, configurações modais e coeficientes de amortecimento) foram identificadas ao longo de todo o ensaio para detetar uma eventual degradação. A conjugação dos vários resultados com as observações realizadas durante os ensaios permitiram avaliar o desempenho sísmico do modelo.
description: As part of the Pre-Shell project, Prefabricated Ultra-Thin Concrete Shells, a set of tests were carried out on the LNEC 3D seismic table with a 1:3 reduced scale model of the developed prototype. An extensive test protocol was carried out during which horizontal seismic actions were imposed in two orthogonal directions. The reference seismic action, generated from a regulatory spectrum from NP EN 1998 1:2010, was scaled by several multiplicative factors from 0.25 to 4.00 and applied sequentially. The model was instrumented with accelerometers at various points, to estimate the inertia forces generated, and displacement transducers at the joints between prefabricated elements, to record any relative movements. Dynamic properties (frequencies, modal configurations and damping coefficients) were identified throughout the test to detect possible degradation. The combination of the various results with the observations made during the tests made it possible to evaluate the seismic performance of the model.
title: The Forestry Reclamation Approach
title: Measuring Sediment Mass Accumulation Rates in Reclaimed Mine Lands and Naturally Regenerated Logged Forests of Eastern Kentucky
titleType: Subtitle
Creators: name: Bond, William E.
Publisher: name: University of Kentucky Libraries
Year: 2019

description: The spread of surface coal mining has resulted in loss of forests in the Appalachian region. The Forestry Reclamation Approach (FRA) was developed to provide guidance for restoring forests on reclaimed mined land. This study hypothesizes that the FRA will result in larger magnitude of sediment accumulation rates in reclaimed mine sites compared to those reclaimed using grassland reclamation. Three sediment cores and six trenches were sampled within four reclaimed mined and three previously logged sites in eastern Kentucky. Samples were processed for radionuclides, grain-size, stable isotopes (δ13C), and POC. LIDAR data were used to identify valley fills, while historical aerial photography was used to identify changes in vegetative cover from 1994 to 2016. Radionuclide dating was used to determine sediment accumulation rates over the previous 100 years. Results from logged sites are inconclusive. δ13C data for all sites fall within the range expected for forested landscapes (C3), and do not show any transitions from grassland to forests. POC data indicates that inventories and fluxes were the same for mined and logged sites. Sediment accumulation rates for reclaimed mined lands show elevated values after the implementation of the FRA, compared to grassland reclamation, thus supporting the hypothesis for previously mined sites.
Rekonstruktion von Holznutzung und Landschaftsgeschichte in einer mittelalterlichen Bergbaulandschaft bei Niederpöbel. Interdisziplinärer Ansatz und methodische Abwägungen
Creators: name: Tolksdorf, Johann Friedrich
name: Schröder, Frank
Publisher: name: Mitteilungen der Deutschen Gesellschaft für Archäologie des Mittelalters und der Neuzeit
Year: 2016

description: [nicht vorhanden / not available]
description: Mitteilungen der Deutschen Gesellschaft für Archäologie des Mittelalters und der Neuzeit, Bd. 29 (2016): Mitteilungen der DGAMN: Ressourcen
Geodesic study of a charged black hole
Creators: name: Kalam, Mehedi
name: Farhad, Nur
name: Hossein, Sk. Monowar
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The behavior of the timelike and null geodesics of charged E. Ay$\acute{o}$n-Beato and A. Garcia (ABG) black hole are investigated. For circular and radial geodesics, we investigate all the possible motions by plotting the effective potentials for different parameters. In conclusion, we have shown that there is no phenomenon of \textit{superradiance} in this case.
description: 6 pages,6 figures
Luzula campestris L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: G. campestris L. Cat. 256 und 429. Ssp. eu-campestris Dahl (ssp. campestris [L.] Schinz et Keller; G.campestris L. s.str.) -Verbreitet. Hohe Stelle aus neuerer Zeit: Moräne des Glacier de Breney (Val de Bagnes), 2720 m (Oberson 1949). Angegeben werden die var. islandica Murbeck und var. suecica Froelich (beide zahlreiche Stellen, besonders in der Südkette); ferner beschrieb BEAUVERD eine var.laricetonun Beauverd (Alpen von Lens) und eine var. flagelliramis (sie) Beauverd (Mont-Chemin, Crans-Montana, Turtmanntal, Zermatt). Ssp. baltica (Murbeck) Dahl (G. baltica Murbeck) - Angeblich in Distr. l: Bois Noir bei St- Maurice (Marietan 1920; Standort später vernichtet).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
TUKUTURI: eine dynamisch selbstrekonfigurierbare Softcore Prozessorarchitektur
Creators: name: Giesemann, Florian
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: design space exploration
subject: code generation
subject: dynamic reconfiguration
subject: Entwurfsraumexploration
subject: Codegenerierung
subject: dynamische Rekonfiguration
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: Der Entwurf von Systemen zur digitalen Signalverarbeitung stellt den Entwickler vor stetig wachsende Herausforderungen, die durch zunehmende Komplexität von Anwendungen und die dafür benötigte Steigerung der Leistungsfähigkeit eingebetteter Systeme verursacht werden. Ein weiterer Aspekt neben der Leistungsfähigkeit ist die Flexibilität, die es erlaubt, Anwendungen und Algorithmen auch nach Auslieferung eines Systems zu verändern. Diese kann zum einen durch Verwendung von FPGAs erreicht werden, die eine Rekonfiguration der Hardware ermöglichen. Zum anderen können prozessorbasierte Systeme verwendet werden, die Flexibilität durch Programmierbarkeit bereitstellen. Anwendungsspezifische Anpassungen der Prozessorarchitektur und ein hohes Maß an paralleler Datenverarbeitung, beispielsweise durch VLIW-Prozessoren, stellen dabei Mittel zum Erreichen hoher Leistungen dar. Das Thema dieser Arbeit ist die Untersuchung eines Entwurfsprozesses für anwendungsspezifische Prozessorsysteme. Dieser basiert auf einem flexiblen SIMD-VLIW-Prozessor, der in großem Umfang konfiguriert und durch zusätzliche Hardwaremodule erweitert werden kann. Zur Exploration des Entwurfsraums werden Werkzeuge zur Analyse von Prozessorkonfigurationen in realen Anwendungen bereitgestellt sowie Methoden zur automatisierten Adaption der Architektur auf Basis dieser Analyseergebnisse untersucht. Die Kompilierung von Anwendungen für VLIW-Architekturen wird aufgrund der kombinatorischen Komplexität üblicherweise mittels statischer Heuristiken durchgeführt, wodurch eine optimale Adaption an flexible Architekturen erschwert werden kann. Daher werden hier dynamische Methoden zur Codegenerierung, die auf evolutionären Algorithmen basieren, untersucht. Die Umsetzung der Architektur als Softcore auf einem FPGA bietet zusätzlich die Möglichkeit der dynamischen Adaption der Hardware zur Laufzeit. Diese Möglichkeiten und deren Einfluss auf die Leistungsfähigkeit der Prozessorsysteme werden ebenfalls untersucht. Die Analyse des Entwurfsprozesses in einer exemplarischen Anwendung der bildbasierten Objekterkennung und der Vergleich mit Implementierungen auf einem MIPS-Softcore bzw. VLIW-DSP zeigen die Eignung der Methoden zur Adaption von Softcore-Prozessoren und der EA-basierten Kompilierung von Anwendungen. Die dynamische Hardwarerekonfiguration zur Laufzeit kann bei reduziertem Flächenbedarf für die Hardware ohne Leistungsverlust eingesetzt werden.
title: Endangered Species Act Section 7(a)(2) Biological Opinion, and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Response, onthe issuance of Scientific Research and Enhancement Permit 18116 to National Marine Fisheries Service, West Coast Region, for field planting andresearch on white abalone (Haliotis sorenseni) in California, pursuant to Section 10(a)(1)(A) of the Endangered Species Act of 1973
titleType: Other
Creators: name: United States. National Marine Fisheries Service
Publisher: name: United States. National Marine Fisheries Service
Year: 2019

description: ESA Section 7 Consultation ; WCRO-2019-01933
title: Ständerat Peter Conradin von Planta
title: sein Leben und seine Werke
titleType: Subtitle
Creators: name: Jecklin, Constanz Von
Publisher: name: Sprecher & Valer
Year: 1903
Subjects: subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf
subject: Planta, Peter C. von
subject: Zernez

description: Separatabdruck aus: 32. Jahresbericht der historisch-antiquarischen Gesellschaft Graubündens
Central Clearing of OTC Derivatives: bilateral vs multilateral netting
Creators: name: Cont, Rama
name: Kokholm, Thomas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Risk Management (q-fin.RM)
subject: FOS: Economics and business

description: We study the impact of central clearing of over-the-counter (OTC) transactions on counterparty exposures in a market with OTC transactions across several asset classes with heterogeneous characteristics. The impact of introducing a central counterparty (CCP) on expected interdealer exposure is determined by the tradeoff between multilateral netting across dealers on one hand and bilateral netting across asset classes on the other hand. We find this tradeoff to be sensitive to assumptions on heterogeneity of asset classes in terms of `riskyness' of the asset class as well as correlation of exposures across asset classes. In particular, while an analysis assuming independent, homogeneous exposures suggests that central clearing is efficient only if one has an unrealistically high number of participants, the opposite conclusion is reached if differences in riskyness and correlation across asset classes are realistically taken into account. We argue that empirically plausible specifications of model parameters lead to the conclusion that central clearing does reduce interdealer exposures: the gain from multilateral netting in a CCP overweighs the loss of netting across asset classes in bilateral netting agreements. When a CCP exists for interest rate derivatives, adding a CCP for credit derivatives is shown to decrease overall exposures. These findings are shown to be robust to the statistical assumptions of the model as well as the choice of risk measure used to quantify exposures.
Cultural Narratives and the Role of Stereotypes: Images of Muslims in Contemporary US Culture
Creators: name: Riedel, Dagmar A.
Publisher: name: Columbia University
Year: 2001
Subjects: Muslims in popular culture
Stereotypes (Social psychology)
Stereotypes (Social psychology) in literature
Cross-cultural studies

description: This draft is the syllabus for a 200 level course (3 credits) at the Collins Living Learning Center of Indiana University, Bloomington, which I developed as doctoral candidate in the summer of 2001. The course was designed to double as a topics-course in intercultural issues and as an introduction to Islam, as it approached American cultural narratives at the beginning of the G. W. Bush presidency through their representations of Muslims. The primary sources ranged from Arabic and Persian literature, which are bestsellers in their English translations, to Hollywood films, comics, and science fiction. They were accompanied with a selection of theoretical readings about semiotics. Field trips to a mosque in Bloomington and the Islamic art exhibit in the IU Art Museum provided opportunities for a reality check on the fictional representations of Muslims and Islamic culture.
Resolution enhancement in neural networks with dynamical synapses
Creators: name: Fung, C. C. Alan
name: Wang, He
name: Lam, Kin
name: Wong, K. Y. Michael
name: Wu, Si
Publisher: name: arXiv
Year: 2013
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Conventionally, information is represented by spike rates in the neural system. Here, we consider the ability of temporally modulated activities in neuronal networks to carry information extra to spike rates. These temporal modulations, commonly known as population spikes, are due to the presence of synaptic depression in a neuronal network model. We discuss its relevance to an experiment on transparent motions in macaque monkeys by Treue et al. in 2000. They found that if the moving directions of objects are too close, the firing rate profile will be very similar to that with one direction. As the difference in the moving directions of objects is large enough, the neuronal system would respond in such a way that the network enhances the resolution in the moving directions of the objects. In this paper, we propose that this behavior can be reproduced by neural networks with dynamical synapses when there are multiple external inputs. We will demonstrate how resolution enhancement can be achieved, and discuss the conditions under which temporally modulated activities are able to enhance information processing performances in general.
description: 25 pages and 15 Figures
Einfluss einer kombinierten B-Vitamin- und Antioxidanziensupplementierung auf die ADMA-Plasmakonzentration bei Personen mit erhöhtem kardiovaskulären Risiko
Creators: name: Trunz, Birgit
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: Asymmetrisches Dimethylarginin
subject: Homocystein
subject: oxidiertes LDL
subject: B-Vitamine
subject: Antioxidanzien
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]