cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
How protic solvents determine the reaction mechanisms of diphenylcarbene in solution
Creators: name: Knorr, Johannes
name: Sokkar, Pandian
name: Costa, Paolo
name: Sander, Wolfram
name: Sanchez-Garcia, Elsa
name: Nuernberger, Patrick
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: 540 Chemie

description: We investigate the effects of small admixtures of protic solvent molecules, such as water and alcohols, on the ultrafast dynamics of diphenylcarbene in acetonitrile at room temperature. Broadband transient absorption measurements and quantum mechanics/molecular mechanics molecular dynamics simulations allow elucidating the dominant reaction mechanism of an intermediate hydrogen-bonded complex between singlet diphenylcarbene and a protic solvent molecule, thus competing with intersystem crossing. Analysis of the data indicates that complex formation is a diffusion-controlled process with orientational requirements. The reaction path involving a benzhydryl cation is less likely in neat bulkier alcohols, as it requires the interaction of the carbene with a protic solvent molecule being part of a hydrogen-bonded network. The simulations indicate a further reaction path toward O–H insertion and two side reactions depending on the involved protic solvent species. Thus, we established that not only the number but also the chemical nature of the protic solvent molecule determine which reaction path is pursued.
description: Über den Link https://pubs.acs.org/articlesonrequest/AOR-bgA7KvHSXZK8REesE7TE ist nach Login mit ACS ID und Passwort (evtl. kurze Registrierung nötig, falls noch kein Account vorhanden) ein kostenloser Zugriff auf den Volltext (ohne VPN o. ä.) möglich
Large deviations of the ballistic Lévy walk model
Creators: name: Wang, Wanli
name: Höll, Marc
name: Barkai, Eli
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the ballistic Lévy walk stemming from an infinite mean traveling time between collision events. Our study focuses on the density of spreading particles all starting from a common origin, which is limited by a `light' cone $-v_0 t
description: 12 pages
Millingen, Alexander van: Byzantine Churches in Constantinople
Creators: name: Baumstark, Anton
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 11 Nr. 2 (1913): Oriens christianus, Band 11, Heft 2
Mass Functions of Giant Molecular Clouds and Young Star Clusters in Six Nearby Galaxies
Creators: name: Mok, Angus
name: Chandar, Rupali
name: Fall, S. Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We compare the mass functions of young star clusters (ages $\leq 10$ Myr) and giant molecular clouds (GMCs) in six galaxies that cover a large range in mass, metallicity, and star formation rate (LMC, M83, M51, NGC 3627, the Antennae, and NGC 3256). We perform maximum-likelihood fits of the Schechter function, $ψ(M) = dN/dM \propto M^β \exp(-M/M_*)$, to both populations. We find that most of the GMC and cluster mass functions in our sample are consistent with a pure power-law distribution ($M_* \rightarrow \infty$). M51 is the only galaxy that shows some evidence for an upper cutoff ($M_*$) in both populations. Therefore, physical upper mass cutoffs in populations of both GMCs and clusters may be the exception rather than the rule. When we perform power-law fits, we find a range of indices $β_{\rm PL}=-2.3\pm0.3$ for our GMC sample and $β_{\rm PL}=-2.0\pm0.3$ for the cluster sample. This result, that $β_{\rm Clusters} \approx β_{\rm GMC} \approx -2$, is consistent with theoretical predictions for cluster formation and suggests that the star-formation efficiency is largely independent of mass in the GMCs.
description: 26 pages, 10 figures; accepted for publication in the Astrophysical Journal
Aeolothripidae Uzel 1895
Creators: name: Liu, Hui
name: Mound, Laurence
name: Zhang, Hongrui
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Thysanoptera
Aeolothripidae

description: Key to genera of Aeolothripidae in China   1. Fore wings racquet-shaped (Fig. 10); head and pronotum with long setae (Fig. 7); antennal segments moniliform (Fig. 11)............................................................................................ Mymarothrips
-. Fore wings not broadened distally (Fig. 14), sometimes micropterous; head and pronotum without long setae or with only 1 pair; at least antennal segments III–IV longer than wide....................................................... 2
 2. Antennal segments III–IV exceptionally long, III at least 8 times as long as wide (Fig. 13); metanotum smooth................................................................................................... Franklinothrips
-. Antennal segments III–IV not exceptionally long, III no more than 4 times as long as wide; metanotum with sculpture..... 3
 3. Antennal segments III–IV each with transverse sensorium at apex; pronotum with 1 pair of long posteroangular setae; abdominal sternites with discal setae laterally.......................................................... Rhipidothrips
-. Antennal segments III–IV each with sensorium linear (Fig. 12); pronotum without long setae; abdominal sternites without discal setae............................................................................................ 4
 4. Mesonotum with sparse striae, metanotum with equiangular reticulation (Fig. 9)........................... Aeolothrips
 -. Meso and metanotum closely striate, metanotum with striae arched around anterior margin (Fig. 8)............ Streothrips
description: Published as part of Liu, Hui, Mound, Laurence & Zhang, Hongrui, 2020, Streothrips jianshuiensis sp. n., a tropical addition to the Aeolothripidae fauna of China (Thysanoptera), pp. 1-5 in Zootaxa 4819 (1) on page 1, DOI: 10.11646/zootaxa.4819.1.1, http://zenodo.org/record/3955796
Streothrips Bhatti 1971
Creators: name: Liu, Hui
name: Mound, Laurence
name: Zhang, Hongrui
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Thysanoptera
Aeolothripidae
Streothrips

description: Key to species of Streothrips
(adapted from Ng & Eow 2012)
 1. Fore wing with longitudinal dark marking in addition to one transverse dark band (Figs 1, 14).......... jianshuiensis sp.n.
-. Fore wing with only transverse dark markings.............................................................. 2
 2. Fore wing largely dark, including wing apex............................................................ alaris
-. Fore wing with transverse dark bands and apex pale.......................................................... 3
 3. Female antennal segment IV with sensorium wider apically, 0.6 times as long as segment; sternite VI with one pair of discal setae laterally.................................................................................... arorai
 -. Female antennal segment IV with sensorium not wider apically, 0.4 times as long as segment; sternite VI without discal setae.............................................................................................. moundi
description: Published as part of Liu, Hui, Mound, Laurence & Zhang, Hongrui, 2020, Streothrips jianshuiensis sp. n., a tropical addition to the Aeolothripidae fauna of China (Thysanoptera), pp. 1-5 in Zootaxa 4819 (1) on page 2, DOI: 10.11646/zootaxa.4819.1.1, http://zenodo.org/record/3955796
Measurement-induced criticality in (2+1)-d hybrid quantum circuits
Creators: name: Turkeshi, Xhek
name: Fazio, Rosario
name: Dalmonte, Marcello
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the dynamics of two-dimensional quantum spin systems under the combined effect of random unitary gates and local projective measurements. When considering steady states, a measurement-induced transition occurs between two distinct dynamical phases, one characterized by a volume-law scaling of entanglement entropy, the other by an area-law. Employing stabilizer states and Clifford random unitary gates, we numerically investigate square lattices of linear dimension up to $L=48$ for two distinct measurement protocols. For both protocols, we observe a transition point where the dominant contribution in the entanglement entropy displays multiplicative logarithmic violations to the area-law. We obtain estimates of the correlation length critical exponent at the percent level; these estimates suggest universal behavior, and are incompatible with the universality class of 3D percolation.
description: 10 pages + Erratum
An Application of Conjoint Analysis in Agricultural Sustainability Assessment
Creators: name: Sydorovych, Olha
name: Wossink, Ada
name: Sydorovych, Olha
name: Wossink, Ada
Publisher: name: Unknown
Year: 2008
Subjects: subject: Environmental Economics and Policy
subject: Conjoint analysis
subject: choice experiments
subject: sustainability assessment

description: Increasing public interest in the concept of sustainable agriculture has resulted in the development of a number of methods that could be used for the assessment of sustainability of various agricultural production systems. Because of its complex, multi-dimensional nature, sustainability is most often assessed using numerous indicators, which make aggregate comparisons among systems difficult. In this paper we propose a methodology that could be beneficial in aggregate sustainability assessment. We apply conjoint analysis to identify economic, social, and ecological attributes that are perceived as important for agricultural sustainability by different stakeholders and to assess their relative impact on the overall sustainability measure.
On Constraints Between $Δα_{\rm had}(M_Z^2)$ and $(g_μ-2)_{\rm HVP}$
Creators: name: de Rafael, Eduardo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: I discuss the possibility of estimating the shift $δΔα(M_Z^2)$ on the running of the EM-coupling to the $M_Z$ scale, induced by the discrepancy $Δa_μ$ between two precise determinations of the hadronic vacuum polarization contribution to $g_μ-2$. It is shown that the size of $Δa_μ$ implies rigorous bounds on the $δΔα(M_Z^2)$-shift. Any extra contribution to this minimal shift necessarily depends on the specific shape of the underlying spectral function $\frac{1}π\ImmΔ(t)$ responsible for the $Δa_μ$-discrepancy. I show that, in the case of a quark model, the total $Δα(M_Z^2)$-shift remains small. I also discuss the scenario where $\frac{1}π\ImmΔ(t)$ is a constant in a finite $t$-region and show that in this case, up to a $t_{\rm max}\precsim 5~\GeV^2$, the size of the total $δΔα_{\rm had}^{(5)}(M_Z^2)$-shift, remains below or of the order of the present error value on $Δα_{\rm had}^{(5)}(M_Z^2)$.
description: Version to appear as Rapid Communication in Physical Review D
The Sirens of Eleven Dimensions
Creators: name: Ramond, P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: While most theorists are tied to the mast of four dimensions, some have found it irresistible to speculate about eleven dimensions, the domain of M-theory. We outline a program which starts from the light-cone description of supergravity, and tracks its divergences to suggest the existence of an infinite component theory which in the light-cone relies on the coset $F_4/SO(9)$, long known to be linked to the Exceptional Jordan Algebra.
description: Contribution to "From Fields to Strings: Circumnavigating Theoretical Physics", Edited by M. Shifman, A. Vainshtein, and J. Wheater, in memory of Ian Kogan
Reversible Single Spin Control of Individual Magnetic Molecule by Hydrogen Atom Adsorption
Creators: name: Liu, Liwei
name: Yang, Kai
name: Jiang, Yuhang
name: Song, Boqun
name: Xiao, Wende
name: Li, Linfei
name: Zhou, Haitao
name: Wang, Yeliang
name: Du, Shixuan
name: Ouyang, Min
name: Hofer, Werner A.
name: Neto, Antonio H. Castro
name: Gao, Hong-Jun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: The reversible control of a single spin of an atom or a molecule is of great interest in Kondo physics and a potential application in spin based electronics.Here we demonstrate that the Kondo resonance of manganese phthalocyanine molecules on an Au(111) substrate have been reversibly switched off and on via a robust route through attachment and detachment of single hydrogen atom to the magnetic core of the molecule. As further revealed by density functional theory calculations, even though the total number of electrons of the Mn ion remains almost the same in the process, gaining one single hydrogen atom leads to redistribution of charges within 3d orbitals with a reduction of the molecular spin state from S = 3/2 to S = 1 that directly contributes to the Kondo resonance disappearance. This process is reversed by a local voltage pulse or thermal annealing to desorb the hydrogen atom.
Damping of zero sound in Luttinger liquids
Creators: name: Pirooznia, Peyman
name: Kopietz, Peter
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We calculate the damping gamma_q of collective density oscillations (zero sound) in a one-dimensional Fermi gas with dimensionless forward scattering interaction F and quadratic energy dispersion k^2 / 2 m at zero temperature. For wave-vectors | q| /k_F small compared with F we find to leading order gamma_q = v_F^{-1} m^{-2} Y (F) | q |^3, where v_F is the Fermi velocity, k_F is the Fermi wave-vector, and Y (F) is proportional to F^3 for small F. We also show that zero-sound damping leads to a finite maximum proportional to |k - k_F |^{-2 + 2 eta} of the charge peak in the single-particle spectral function, where eta is the anomalous dimension. Our prediction agrees with photoemission data for the blue bronze K_{0.3}MoO_3.
description: final version as published; with more technical details; we have added a discussion of recent work which appeared after our initial cond-mat posting; 13 pages, 5 figures
Effective Electrostatic Interactions in Solutions of Polyelectrolyte Stars with Rigid Rodlike Arms
Creators: name: Wang, Hao
name: Denton, Alan R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In solutions of star-branched polyelectrolytes, electrostatic interactions between charged arms on neighboring stars can compete with intra-star interactions and rotational entropy to induce anisotropy in the orientational distribution of arms. For model stars comprising rigid rodlike arms with evenly spaced charged monomers interacting via an effective screened-Coulomb (Yukawa) potential, we explore the influence of arm orientational anisotropy on effective star-star interactions. Monte Carlo simulation and density-functional theory are used to compute arm orientational distributions and effective pair potentials between weakly charged stars. The degree of anisotropy is found to increase with the strength of electrostatic interactions and proximity of the stars. As two stars begin to overlap, the forward arms are pushed back by inter-star arm-arm repulsion, but partially interdigitate due to rotational entropy. At center-center separations approaching complete overlap, the arms relax to an isotropic distribution. For nonoverlapping stars, anisotropy-induced changes in intra- and inter-star arm-arm interactions largely cancel and the effective pair interactions are then well approximated by a simple Yukawa potential, as predicted by linear response theory for a continuum model of isotropic stars [A. R. Denton, Phys. Rev. E 67, 11804 (2003)]. For overlapping stars, the effective pair interactions in the simple rigid-arm-Yukawa model agree closely with simulations of a molecular model that includes flexible arms and explicit counterions [A. Jusufi, C. N. Likos, and H. Lowen, Phys. Rev. Lett. 88, 018301 (2002); J. Chem. Phys. 116, 11011 (2002)].
description: 17 pages, 11 figures
MORPHOLOGICAL CHANGES OF THE SPLEEN IN EXPERIMENTAL RHEUMATOID ARTHRITIS WITH THE HELP OF ADJUVANT FREYEND
Creators: name: Makhmudova, Guljamol
name: Azimova, Dilora
Publisher: name: Zenodo
Year: 2024

description: the immune system is one of the most complex autonomous regulatory systems of the body, therefore, violation of its functionality leads to serious complications of an autoimmune and infectious nature. “In this regard, in recent years, the issues of maintaining homeostasis in the immune system have become especially relevant.”The protection of a living organism cannot be imagined without an immune system. In humans and animals, the immune system provides the body's flexibility and protection against the effects of various pathogenic factors. In recent years, there has been an increase in diseases associated with damage to the immune system in the world".
Collective Reputation, Entry and Minimum Safety Standard
Creators: name: Rouviere, Elodie
name: Soubeyran, Raphael
name: Rouviere, Elodie
name: Soubeyran, Raphael
Publisher: name: Unknown
Year: 2008
Subjects: subject: Institutional and Behavioral Economics
subject: Collective Reputation
subject: Entry
subject: Minimum Quality Standard

description: This article deals with the issue of entry into an industry where firms share a collective reputation. First, we show that free entry is not socially optimal; there is a need for regulation through the imposition of a minimum quality standard. Second, we argue that a minimum quality standard can induce firms to enter the market. Contrary to conventional wisdom, a minimum quality standard should not always be considered as a barrier to entry.
Supplementary Information;Supplementary Dataset from Selective extinction against redundant species buffers functional diversity
Creators: name: Pimiento, Catalina
name: Bacon, Christine D.
name: Silvestro, Daniele
name: Hendy, Austin
name: Jaramillo, Carlos
name: Zizka, Alexander
name: Meyer, Xavier
name: Antonelli, Alexandre
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 40308 Palaeontology (incl. Palynology)
subject: FOS: Earth and related environmental sciences

description: The extinction of species can destabilize ecological processes. A way to assess the ecological consequences of species loss is by examining changes in functional diversity. The preservation of functional diversity depends on the range of ecological roles performed by species, or functional richness, and the number of species per role, or functional redundancy. However, current knowledge is based on short timescales and an understanding of how functional diversity responds to long-term biodiversity dynamics has been limited by the availability of deep-time, trait-based data. Here, we compile an exceptional trait dataset of fossil mollusks from a 23-million-year interval in the Caribbean Sea (34 011records, 4422 species) and develop a novel Bayesian model of multi-trait-dependent diversification to reconstruct mollusk (i) diversity dynamics, (ii) changes in functional diversity and (iii) extinction selectivity over the last 23 Myr. Our results identify high diversification between 23–5 Mya, leading to increases in both functional richness and redundancy. Conversely, over the last three million years, a period of high extinction rates resulted in the loss of 49% of species but only 3% of functional richness. Extinction rates were significantly higher in small, functionally redundant species suggesting that competition mediated the response of species to environmental change. Taken together, our results identify long-term diversification and selective extinction against redundant species that allowed functional diversity to grow over time, ultimately buffering the ecological functions of biological communities against extinction.
Inhalt IV. Quartal 2020 / Aktuelle Ausstellungen / Impressum
Creators: name: Redaktion, Die
Publisher: name: KulturGut : aus der Forschung des Germanischen Nationalmuseums
Year: 2021

description: KulturGut : aus der Forschung des Germanischen Nationalmuseums, Nr. 67 (2020): KulturGut: aus der Forschung des Germanischen Nationalmuseums
Development of the Eocene Elko Basin, Northeastern Nevada : implications for paleogeography and regional tectonism
Creators: name: Haynes, Simon Richard
Publisher: name: University of British Columbia
Year: 2009

description: Middle to late Eocene sedimentary and volcanic rocks in northeastern Nevada document the formation of broad lakes, two periods of crustal extension, and provide compelling evidence that the Carlin trend was a topographic high during a major phase of gold formation. The Eocene Elko Formation consists of alluvial-lacustrine rocks that were deposited into a broad, extensional basin between the present-day Ruby Mountains-East Humboldt Range metamorphic core complex and the Tuscarora Mountains. The rocks are divided into the lacustrine-dominated, longer-lived, eastern Elko Basin, and the alluvial braidplain facies of the shorter-lived western Elko Basin. The base of the Eocene sedimentary rocks in the eastern basin is marked by a coarse boulder (>1 m clasts) conglomerate, overlain by a -150 m sandy pebble conglomerate with paleocurrent indicators indicating that rivers flowed to the northwest. U-Pb (zircon) dating of an air-fall tuff near the base of the pebble conglomerate constrains timing of initial basin fill to have begun by 46.1 ± 0.2 Ma. The coarser clastic rocks at the base are overlain by nearly 600 m of lacustrine limestone, siltstone, shale, and oil shale that interfinger with overlying air-fall tuff, which mark the end of clastic sedimentation at 38.9 ± 0.1 Ma (U-Pb, zircon). The eastern Elko Basin is the regional lacustrine depocentre, which originally formed as a half-graben in the hanging wall of a future core complex. The western Elko Basin fill is composed dominantly of cobble to pebble conglomerate, less than 200 m thick (fine-grained lacustrine rocks are largely absent), and sedimentation began by ~42 Ma. This area contains thick successions of ash-flow tuffs that began erupting by 40.5 Ma. Steeply dipping, south to southwest-striking normal faults subsequently cut strata of the Elko Formation and overlying air-fall tuff into a series of blocks on the order of hundreds of metres wide, and tilted them to the east and southeast. Andesite-dacite lava flows overlie the tilted strata and constrain the initiation of a second period of extensional deformation to between 39.5 and 38.5 Ma in the western basin, and ~38 Ma in the east. Paleocurrent measurements indicate that clastic sediments were shed away from the Carlin trend, to the north and the west during the Eocene. Likewise, the distribution of sedimentary and volcanic rocks demonstrates a general thinning towards the Carlin trend, and there is no evidence to suggest that the Elko Formation was deposited over this area. The Carlin trend was a topographic high during the Eocene, contemporaneous with gold formation.
quartowp.pdfDeterminants of overall and sectoral entrepreneurship: evidence from Portugal
Creators: name: Brás, Gonçalo Nuno
name: Soukiazis, Elias
Publisher: name: figshare
Year: 2020
Subjects: subject: 150304 Entrepreneurship
subject: FOS: Economics and business
subject: 150307 Innovation and Technology Management
subject: 150399 Business and Management not elsewhere classified

description: As a multidisciplinary concept, entrepreneurship can be explained by numerous factors. Therefore, the aim of this study is to test empirically the determinants of entrepreneurship (overall and sectoral) in the Portuguese economy. Despite the methodological limitations inherent in such studies, which are mainly due to the incompatibility of some series and the temporal limitations of some data, the novelty involving a cross-sectoral view of the entrepreneurial phenomenon fuels this challenge. For this purpose, we employ an estimation approach based on time series models to confirm (or reject) a diversity of hypotheses. The main results indicate that the determinants of entrepreneurship in industry are significantly different from the determinants of entrepreneurship in the service sector in Portugal. On the other hand, the determinants of entrepreneurship in the service sector are very similar to those explaining the overall entrepreneurial activity, due to the high share of services in total economic activity. The main conclusions of the study can guide institutional decision-makers to adopt adequate policies for promoting entrepreneurship in Portugal. Additionally, strategic routes for the sustainable development of entrepreneurial activity are suggested.
Pair Correlations in Scale-Free Networks
Creators: name: Zhuang-Xiong, Huang
name: Xin-Ran, Wang
name: Han, Zhu
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Correlation between nodes is found to be a common and important property in many complex networks. Here we investigate degree correlations of the Barabasi-Albert (BA) Scale-Free model with both analytical results and simulations, and find two neighboring regions, a disassortative one for low degrees and a neutral one for high degrees. The average degree of the neighbors of a randomly picked node is expected to diverge in the limit of infinite network size. As an generalization of the concept of correlation, we also study the correlations of other scalar properties, including age and clustering coefficient. Finally we propose a correlation measurement in bipartite networks.
Schembartbücher – Zur Sprache der Objekte
Creators: name: Lier, Franziska
Publisher: name: KulturGut : aus der Forschung des Germanischen Nationalmuseums
Year: 2021

description: KulturGut : aus der Forschung des Germanischen Nationalmuseums, Nr. 67 (2020): KulturGut: aus der Forschung des Germanischen Nationalmuseums
Rationeller Luxus?
Creators: name: Behrend, Anna Katharina
name: Rasche, Adelheid
Publisher: name: KulturGut : aus der Forschung des Germanischen Nationalmuseums
Year: 2021

description: KulturGut : aus der Forschung des Germanischen Nationalmuseums, Nr. 67 (2020): KulturGut: aus der Forschung des Germanischen Nationalmuseums
The Fornax Deep Survey with VST. X. The assembly history of the bright galaxies and intra-group light in the Fornax A subgroup
Creators: name: Raj, M. A.
name: Iodice, E.
name: Napolitano, N. R.
name: Hilker, M.
name: Spavone, M.
name: Peletier, R. F.
name: Su, H-S.
name: Falcón-Barroso, J.
name: van de Ven, G.
name: Cantiello, M.
name: Kleiner, D.
name: Venhola, A.
name: Mieske, S.
name: Paolillo, M.
name: Capaccioli, M.
name: Schipani, P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the study of the south-west group in the Fornax cluster centred on the brightest group galaxy (BGG) Fornax A, observed as part of the Fornax Deep Survey (FDS). This includes the analysis of the bright group members (mB < 16 mag) and the intra-group light (IGL). The main objective of this work is to investigate the assembly history of the Fornax A group and to compare its physical quantities as a function of the environment to that of the Fornax cluster core. For all galaxies, we extract the azimuthally averaged surface brightness profiles in three optical bands (g, r, i) by modelling the galaxy's isophotes. We derive their colour profiles and structural parameters in all respective bands. The long integration time and large covered area of the FDS allow us to also estimate the amount of IGL. The majority of galaxies in the Fornax A group are late-type galaxies (LTGs), spanning a range of stellar mass of $8 < log (M_* M_{\odot}) < 10.5$. Six out of nine LTGs show a Type III (up-bending) break in their light profiles, which is either suggestive of strangulation halting star-formation in their outskirts or their HI-richness causing enhanced star-formation in their outer-discs. The estimated luminosity of the IGL is $6 \pm 2 \times 10^{10} L_{\odot}$ in g-band, which corresponds to about 16% of the total light in the group. The Fornax A group appears to be in an early stage of assembly with respect to the cluster core. The environment of the Fornax A group is not as dense as that of the cluster core, with all galaxies except the BGG showing similar morphology, comparable colours and stellar masses, and Type III disc-breaks, without any clear trend of these properties with group-centric distances. The main contribution to the IGL is from the minor merging in the outskirts of the BGG NGC1316 and, probably, the disrupted dwarf galaxies close to the group centre.
description: Published in A&A. Replaced version: corrected typos and title (series number X)
Nebelflöhe und andere Kuriositäten
Creators: name: Mönig, Marie-Christine
Publisher: name: KulturGut : aus der Forschung des Germanischen Nationalmuseums
Year: 2021

description: KulturGut : aus der Forschung des Germanischen Nationalmuseums, Nr. 67 (2020): KulturGut: aus der Forschung des Germanischen Nationalmuseums
State preparation based on Grover's algorithm in the presence of global information about the state
Creators: name: Soklakov, Andrei N.
name: Schack, Ruediger
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a previous paper [quant-ph/0408045] we described a quantum algorithm to prepare an arbitrary state of a quantum register with arbitrary fidelity. Here we present an alternative algorithm which uses a small number of quantum oracles encoding the most significant bits of the absolute value of the complex amplitudes, and a small number of oracles encoding the most significant bits of the phases. The algorithm given here is considerably simpler than the one described in [quant-ph/0408045], on the assumption that a sufficient amount of knowledge about the distribution of the absolute values of the complex amplitudes is available.
description: 13 pages
Long-time Dynamics for a Cahn-Hilliard Tumor Growth Model with Chemotaxis
Creators: name: Garcke, Harald
name: Yayla, Sema
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: Mathematical models that describe the tumor growth process have been formulated by several authors in order to understand how cancer develops and to develop new treatment approaches. In this study, it is aimed to investigate the long-time behavior of the two-phase diffuse-interface model, which was proposed in [11] to model a tumor tissue as a mixture of cancerous and healthy cells. Up to now, studies on the long-time behavior of this model have neglected chemotaxis and active transport, which have a significant effect on tumor growth. In this research, our main aim is to study this model with chemotaxis and active transport. We prove an asymptotic compactness result for the weak solutions of the problem in the whole phase-space $H^1 (Ω) \times L^2 (Ω)$. We establish the existence of the global attractor in a phase space denoted via mass conservation. We also prove that the global attractor equals to the unstable manifold emanating from the set of stationary points. Moreover, we obtain that the global attractor has a finite fractal dimension.
Low Albedo Surfaces of Lava Worlds
Creators: name: Essack, Zahra
name: Seager, Sara
name: Pajusalu, Mihkel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Hot super Earths are exoplanets with short orbital periods ($$ 0.4) in the Kepler band (420-900 nm). We are motivated to determine whether reflection from molten lava and quenched glasses (a product of rapidly cooled lava) on the surfaces of hot super Earths contributes to the observationally inferred high geometric albedos. We experimentally measure reflection from rough and smooth textured quenched glasses of both basalt and feldspar melts. For lava reflectance values, we use specular reflectance values of molten silicates from non-crystalline solids literature. Integrating the empirical glass reflectance function and non-crystalline solids reflectance values over the dayside surface of the exoplanet at secondary eclipse yields an upper limit for the albedo of a lava-quenched glass planet surface of $\sim $0.1. We conclude that lava planets with solid (quenched glass) or liquid (lava) surfaces have low albedos. The high albedos of some hot super Earths are most likely explained by atmospheres with reflective clouds (or, for a narrow range of parameter space, possibly Ca/Al oxide melt surfaces). Lava planet candidates in TESS data can be identified for follow-up observations and future characterization.
description: 18 pages, 14 figures, 4 tables, published in ApJ
Myxobolus jialingensis Gao & Zhang & Yang & Zhao 2020, n. sp.
Creators: name: Gao, Lei
name: Zhang, Jing
name: Yang, Chengzhong
name: Zhao, Yuanjun
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Myxozoa
Myxosporea
Bivalvulida
Myxobolidae
Myxobolus
Myxobolus jialingensis

description: Myxobolus jialingensis n. sp.
http://zoobank.org/ urn:lsid:zoobank.org:pub: 6410134B-D7AF-4C5C-920E-CC16A02BD7C9
 ( Fig. 1 )
description: Published as part of Gao, Lei, Zhang, Jing, Yang, Chengzhong & Zhao, Yuanjun, 2020, Myxobolus jialingensis n. sp. (Myxozoa: Myxobolidae) infecting urinary bladder and hepatopancreas of yellowhead catfish Tachysurus fulvidraco from China, pp. 179-186 in Zootaxa 4819 (1) on page 180, DOI: 10.11646/zootaxa.4819.1.10, http://zenodo.org/record/3955802
TXS 2116$-$077: A Gamma-ray Emitting Relativistic Jet Hosted in a Galaxy Merger
Creators: name: Paliya, Vaidehi S.
name: Pérez, Enrique
name: García-Benito, Rubén
name: Ajello, Marco
name: Prada, Francisco
name: Alberdi, Antxon
name: Suh, Hyewon
name: Chandra, C. H. Ishwara
name: Domínguez, Alberto
name: Marchesi, Stefano
name: Di Matteo, Tiziana
name: Hartmann, Dieter
name: Chiaberge, Marco
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: What triggers collimated relativistic outflows or jets, from the centers of galaxies remains a fundamental question in astrophysics. The merging of two galaxies has been proposed to realize the conditions to successfully launch and drive such jets into the intergalactic medium. However, evidences for the operation of this mechanism are scarce. Here we report the first unambiguous detection of an ongoing merger of a narrow-line Seyfert 1 galaxy, TXS 2116$-$077, hosting a closely aligned, $γ$-ray emitting relativistic jet with a Seyfert 2 galaxy at a separation of $\sim$12 kpc, using the observations taken with 8.2 m Subaru telescope. Our subsequent followup observations with 10.4 m Gran Telescopio Canarias, 4.2 m William Herschel Telescope, and Chandra X-ray observatory have provided what is likely to be the first glimpse of the merging environment hosting a closely aligned relativistic jet. Our finding that the jet is considerably younger than the merger demonstrates that jet activity can be triggered by galaxy mergers and that $γ$-ray detected narrow-line Seyfert 1 galaxies represent the beginning phase of that activity. These results also highlight the crucial role of mergers in shaping the fate of galaxies in their cosmological evolution and are consistent with recent studies focused on the host galaxy imaging of this enigmatic class of active galactic nuclei.
description: 13 pages, 7 figures, 1 table, published in the Astrophysical Journal
A comparison of information requests in five public libraries, two Hampshire County Council information centres and three tourist information centres
Creators: name: Bevis, Judith M.
Publisher: name: Loughborough University
Year: 2021
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: A comparison of information requests in five public libraries, two Hampshire County Council Information Centres and three Tourist Information Centres
Pair Contact Process with Diffusion: Failure of Master Equation Field Theory
Creators: name: Janssen, Hans-Karl
name: van Wijland, Frederic
name: Deloubriere, Olivier
name: Tauber, Uwe C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We demonstrate that the `microscopic' field theory representation, directly derived from the corresponding master equation, fails to adequately capture the continuous nonequilibrium phase transition of the Pair Contact Process with Diffusion (PCPD). The ensuing renormalization group (RG) flow equations do not allow for a stable fixed point in the parameter region that is accessible by the physical initial conditions. There exists a stable RG fixed point outside this regime, but the resulting scaling exponents, in conjunction with the predicted particle anticorrelations at the critical point, would be in contradiction with the positivity of the equal-time mean-square particle number fluctuations. We conclude that a more coarse-grained effective field theory approach is required to elucidate the critical properties of the PCPD.
description: revtex, 8 pages, 1 figure included
Spin reorientation transition in an ultrathin Fe film on W(110) induced by Dzyaloshinsky-Moriya interactions
Creators: name: Nagyfalusi, Balázs
name: Udvardi, László
name: Szunyogh, László
name: Rózsa, Levente
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Controlling the preferred direction of the magnetic moments is essential for the design of spintronic devices based on ultrathin films and heterostructures. As the film thickness or the temperature is increased, the easy anisotropy axis is typically reoriented from an out-of-plane direction preferred by surface and interface energy contributions to an in-plane alignment favored by the volume anisotropy terms. We study the temperature-driven spin reorientation transition in two atomic layers of Fe on W(110) using well-tempered metadynamics simulations based on a spin model parametrized by ab initio calculations and find that the transition only takes place in the presence of the Dzyaloshinsky--Moriya interaction (DMI). This demonstrates that the chiral DMI does not only differentiate between noncollinear spin structures of different rotational senses, but it also influences the magnetic orientation of collinear magnetic configurations.
description: 6 pages, 3 figures
Agricultural Trade Liberalization and Poverty in Tunisia: Micro-simulation in a General Equilibrium Framework
Creators: name: Chemingui, Mohamed Abdelbasset
name: Thabet, Chokri
name: Chemingui, Mohamed Abdelbasset
name: Thabet, Chokri
Publisher: name: Unknown
Year: 2008
Subjects: subject: International Relations/Trade
subject: Tunisia
subject: agricultural trade liberalization
subject: poverty

description: The study tries to answer the following questions: Will exposure to world agricultural prices generate more poverty or less? To what extent will households be affected by changes in agricultural trade polices? Do multilateral agricultural liberalization matter more than bilateral changes? Results of simulations using a computable general equilibrium (CGE) model linked to household survey data suggest that trade liberalization has only modest effects on the level of GDP, but it has a substantial effect in reducing poverty. Moreover, the combined effects of global and domestic liberalization are more pro-poor than the effect of domestic liberalization alone. As a net importer of agricultural commodities, Tunisia may be expected to experience terms-oftrade losses from higher world agricultural prices. However, given Tunisia's significant agricultural import protection policies, it is expected that the agricultural sector will lose from trade liberalization that removes this protection.
Memorandum of Understanding (MoU) signed between StandICT.eu2023 & BIMprove
Creators: name: Marill, Mona
name: Papanikolaou, Vasilis
Publisher: name: Zenodo
Year: 2021
Subjects: H2020, Digital Twins, Construction, dissemination, communication, standardization

description: StandICT.eu 2023 & BIMprove announce a signature of a MoU. These two European initiatives align with the open innovation approach in the standardization of Digital Twin Technologies.
Sexual Orientation and Household Decision Making. Same-Sex Couples’ Balance of Power and Labor Supply Choices
Creators: name: Oreffice, Sonia
name: Oreffice, Sonia
Publisher: name: Unknown
Year: 2008
Subjects: subject: Consumer/Household Economics
subject: Household Decision Making
subject: Same-Sex Couples
subject: Labor Supply

description: I estimate how intra-household bargaining affects gay and lesbian couples’ labor supplies, investigating their similarity to heterosexual decision-making, in a collective household framework. Data from the 2000 US Census show that couples of all types exhibit a significant response to bargaining power shifts, as measured by differences between partners in age or non-labor income. In gay, lesbian, and heterosexual cohabiting couples, a relatively young or rich partner has more bargaining power and hence supplies less labor, the opposite holding for his/her mate. Married couples value the older spouse instead, or the richer. No effects are found for same-sex roommates.
An algebraic approach to problems with polynomial Hamiltonians on Euclidean spaces
Creators: name: Rowe, D. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Explicit expressions are given for the actions and radial matrix elements of basic radial observables on multi-dimensional spaces in a continuous sequence of orthonormal bases for unitary SU(1,1) irreps. Explicit expressions are also given for SO(N)-reduced matrix elements of basic orbital observables. These developments make it possible to determine the matrix elements of polynomial and a other Hamiltonians analytically, to within SO(N) Clebsch-Gordan coefficients, and to select an optimal basis for a particular problem such that the expansion of eigenfunctions is most rapidly convergent.
description: 19 pages, 8 figures
Grallaria saltuensis Wetmore 1946
Creators: name: Isler, Morton L.
name: Chesser, Terry
name: Robbins, Mark B.
name: Cuervo, Andrés M.
name: Cadena, Carlos Daniel
name: Hosner, Peter A.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Grallariidae
Grallaria
Grallaria saltuensis

description: Grallaria saltuensis Wetmore, 1946, subspecies elevated to species
Perijá Antpitta
 Includes population designated saltuensis in the analysis.
 Diagnosis. Differs from all other taxa in the complex in its olive to buffy-brown upperparts and extensively white or whitish underparts. A combination of trilled long and short songs (Fig. 2) distinguish G. saltuensis from all taxa in the complex except G. spatiator. Long songs of G. saltuensis differ from those of G. spatiator in having fewer notes, slower pace, and less decline in the peak frequency of individual notes. The short song illustrated in Figure 2 is thought to be given naturally; other variations thought to be given in response to playback of recorded vocalizations are included in the analysis. All variations of short songs of G. saltuensis appear to differ from short songs of G. spatiator by slower pace and lower initial frequencies of note peaks, although sample sizes were limited.
 Distribution. Endemic to the Serranía de Perijá in Zulia, Venezuela, and La Guajira and Cesar, Colombia, 2500–3250 m.
 Plumage. Overall plumage of upperparts, including rectrices, remiges (wing edgings paler), crown and auriculars, olive to buffy brown (2.5Y 4/4-10YR 4/3), shading to color of underparts in malar area. Narrow breast band buffy brown (10YR 7/4–6/4); remaining underparts except flanks but including undertail coverts light grayish white tinged buffy brown; flanks like upperparts (specimen photographs App. 6, Figs. A13 and A34).
 Etymology. The English name, first proposed by Meyer de Schauensee (1950), reflects the mountain range to which this species is restricted.
 Remarks. Grallaria saltuensis is specifically distinct based on vocal characters and supported by plumage characters and mtDNA genetic distance of>7.5% from all other populations. A combination of trilled long and short songs differentiates both G. saltuensis and G. spatiator from all other populations. Long songs of G. saltuensis and G. spatiator differ significantly from one another, and significant differences in short songs are likely to be confirmed when larger samples are available. Species status of G. saltuensis and G. spatiator is supported by diagnosable plumage distinctions between the olivaceous G. saltuensis and rufescent G. spatiator and an mtDNA genetic distance of ~7%. The lack of rufescent coloration sets G. saltuensis apart from all other taxa in the complex.
description: Published as part of Isler, Morton L., Chesser, Terry, Robbins, Mark B., Cuervo, Andrés M., Cadena, Carlos Daniel & Hosner, Peter A., 2020, Taxonomic evaluation of the Grallaria rufula (Rufous Antpitta) complex (Aves: Passeriformes: Grallariidae) distinguishes sixteen species, pp. 1-74 in Zootaxa 4817 (1) on page 9, DOI: 10.11646/zootaxa.4817.1.1, http://zenodo.org/record/3954698
Relatório Técnico: verificação de acessibilidade no Portal Discente do Sistema Acadêmico da Universidade Federal da Paraíba (UFPB)
Creators: name: Arruda, Eduardo Martins De
name: Lima, Izabel França De
Publisher: name: figshare
Year: 2020
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: O presente estudo objetivou apresentar uma verificação de acessibilidade no portal discente do Sistema Integrado de Gerenciamento de Atividades Acadêmicas (SIGAA) da Universidade Federal da Paraíba (UFPB). O SIGAA configura-se como principal meio digital acessado pelos discentes da instituição. Desse modo, disponibilize um ambiente virtual acadêmico adequado e acessível para ser uma das principais medidas adotadas pela UFPB. Visando sempre o cumprimento de associações da sociedade e de toda a comunidade acadêmica por condições mais iguais e justamente ao acessar e viver no ensino superior, Recupere qualquer limitação física, motora, sensorial, mental ou psíquica. Além disso, existem aspectos normativos e legais para qualificar uma instituição sebriga a manter o ambiente de ensino superior federal. Uma análise foi fundamentada em dois momentos: (I) seleção automática de acessibilidade e (II) realização de entrevistas com discentes com deficiência visual (DV) que possuem vínculo no Núcleo de Educação Especial (Nedesp / UFPB). Por fim, conclua pela importância da complementaridade de abordagens diferentes usadas na identificação de problemas de acessibilidade. Adotando sempre que possível participação de pessoas com deficiência para melhor compreensão da situação.