cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hydrodynamic modes of a 1D trapped Bose gas
Creators: name: Fuchs, J. N.
name: Leyronas, X.
name: Combescot, R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider two regimes where a trapped Bose gas behaves as a one-dimensional system. In the first one the Bose gas is microscopically described by 3D mean field theory, but the trap is so elongated that it behaves as a 1D gas with respect to low frequency collective modes. In the second regime we assume that the 1D gas is truly 1D and that it is properly described by the Lieb-Liniger model. In both regimes we find the frequency of the lowest compressional mode by solving the hydrodynamic equations. This is done by making use of a method which allows to find analytical or quasi-analytical solutions of these equations for a large class of models approaching very closely the actual equation of state of the Bose gas. We find an excellent agreement with the recent results of Menotti and Stringari obtained from a sum rule approach.
description: 15 pages, revtex, 1 figures
Detecting and Characterizing Water Vapor in the Atmospheres of Earth Analogs through Observation of the 0.94 Micron Feature in Reflected Light
Creators: name: Smith, Adam J. R. W.
name: Feng, Y. Katherina
name: Fortney, Jonathan J.
name: Robinson, Tyler D.
name: Marley, Mark S.
name: Lupu, Roxana E.
name: Lewis, Nikole K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The characterization of rocky, Earth-like planets is an important goal for future large ground- and space-based telescopes. In support of developing an efficient observational strategy, we have applied Bayesian statistical inference to interpret the albedo spectrum of cloudy true-Earth analogs that include a diverse spread in their atmospheric water vapor mixing ratios. We focus on detecting water-bearing worlds by characterizing their atmospheric water vapor content via the strong 0.94$\,μ$m H$_2$O absorption feature, with several observational configurations. Water vapor is an essential signpost when assessing planetary habitability, and determining its presence is important in vetting whether planets are suitable for hosting life. We find that R=140 spectroscopy of the absorption feature combined with a same-phase green optical photometric point at $0.525-0.575\,μ$m is capable of distinguishing worlds with less than $0.1\times$ Earth-like water vapor levels from worlds with $1\times$ Earth-like levels or greater at a signal-to-noise ratio of 5 or better with $2σ$ confidence. This configuration can differentiate between $0.01\times$ and $0.1\times$ Earth-like levels when the signal-to-noise ratio is 10 or better at the same confidence. However, strong constraints on the water vapor mixing ratio remained elusive with this configuration even at signal-to-noise of 15. We find that adding the same-phase optical photometric point does not significantly help characterize the H$_2$O mixing ratio, but does enable an upper limit on atmospheric ozone levels. Finally, we find that a 0.94$\,μ$m photometric point, instead of spectroscopy, combined with the green-optical point, fails to produce meaningful information about atmospheric water content.
description: Accepted to AJ
Isoetales
Creators: name: Peruzzi, Lorenzo
name: Conti, Fabio
name: Bartolucci, Fabrizio
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Lycopodiopsida
Isoetales

description: Isoetales  Isoetaceae
 Isoetes malinverniana Ces. & De Not.
NW Italy (PIE); NE Italy (LOM)
 Isoetes sabatina Troìa & Azzella
C Italian peninsula (LAZ)
 Isoetes todaroana Troìa & Raimondo
 S Italian peninsula (PUG, CAL, SIC). Note: in agreement with Peruzzi & Bernardo (2011), we consider I. iapygia Ernandes et al. (2010: 807) as a later heterotypic synonym of I. todaroana Troìa & Raimondo (2009: 138). We also feel that the further arguments presented by Ernandes & Marchiori (2012) in support of an eventual specific distintion of these two taxa are not sufficient and incomplete in geographic sampling (similar doubts are expressed also by Troìa & Greuter 2014).
description: Published as part of Peruzzi, Lorenzo, Conti, Fabio & Bartolucci, Fabrizio, 2014, An inventory of vascular plants endemic to Italy, pp. 1-75 in Phytotaxa 168 (1) on page 9, DOI: 10.11646/phytotaxa.168.1.1, http://zenodo.org/record/10089750
Optical Imaging of Very Luminous Infrared Galaxy Systems: Photometric Properties and Late Evolution
Creators: name: Arribas, Santiago
name: Bushouse, Howard
name: Lucas, Ray A.
name: Colina, Luis
name: Borne, Kirk D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A sample of 19 low redshift (0.03$
description: 27 pages, 5 figures (degraded to reduce space). Figures 1 and 2 are multiple page figures (i.e. Fig 1a,b and Fig2a-g)
On large-scale genre classification in symbolically encoded music by automatic identification of repeating patterns
Creators: name: Ferraro, Andres
name: Lemström, Kjell
Publisher: name: arXiv
Year: 2019
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: The importance of repetitions in music is well-known. In this paper, we study music repetitions in the context of effective and efficient automatic genre classification in large-scale music-databases. We aim at enhancing the access and organization of pieces of music in Digital Libraries by allowing automatic categorization of entire collections by considering only their musical content. We handover to the public a set of genre-specific patterns to support research in musicology. The patterns can be used, for instance, to explore and analyze the relations between musical genres. There are many existing algorithms that could be used to identify and extract repeating patterns in symbolically encoded music. In our case, the extracted patterns are used as representations of the pieces of music on the underlying corpus and, consecutively, to train and evaluate a classifier to automatically identify genres. In this paper, we apply two very fast algorithms enabling us to experiment on large and diverse corpora. Thus, we are able to find patterns with strong discrimination power that can be used in various applications. We carried out experiments on a corpus containing over 40,000 MIDI files annotated with at least one genre. The experiments suggest that our approach is scalable and capable of dealing with real-world-size music collections.
Genomics of severe and treatment‐resistant obsessive–compulsive disorder treated with deep brain stimulation: A preliminary investigation
Creators: name: Mataix‐Cols, David
name: Rück, Christian
name: Pascal, Diana
name: Naesström, Matilda
name: Fytagoridis, Anders
name: Crowley, Stephanie B.
name: Crowley, James J.
name: Chen, Long Long
name: Halvorsen, Matthew
Publisher: name: Wiley
Year: 2024

description: Individuals with severe and treatment-resistant obsessive-compulsive disorder (trOCD) represent a small but severely disabled group of patients. Since trOCD cases eligible for deep brain stimulation (DBS) probably comprise the most severe end of the OCD spectrum, we hypothesize that they may be more likely to have a strong genetic contribution to their disorder. Therefore, while the worldwide population of DBS-treated cases may be small (~300), screening these individuals with modern genomic methods may accelerate gene discovery in OCD. As such, we have begun to collect DNA from trOCD cases who qualify for DBS, and here we report results from whole exome sequencing and microarray genotyping of our first five cases. All participants had previously received DBS in the bed nucleus of stria terminalis (BNST), with two patients responding to the surgery and one showing a partial response. Our analyses focused on gene-disruptive rare variants (GDRVs; rare, predicted-deleterious single-nucleotide variants or copy number variants overlapping protein-coding genes). Three of the five cases carried a GDRV, including a missense variant in the ion transporter domain of KCNB1, a deletion at 15q11.2, and a duplication at 15q26.1. The KCNB1 variant (hg19 chr20-47991077-C-T, NM_004975.3:c.1020G>A, p.Met340Ile) causes substitution of methionine for isoleucine in the trans-membrane region of neuronal potassium voltage-gated ion channel KV2.1. This KCNB1 substitution (Met340Ile) is located in a highly constrained region of the protein where other rare missense variants have previously been associated with neurodevelopmental disorders. The patient carrying the Met340Ile variant responded to DBS, which suggests that genetic factors could potentially be predictors of treatment response in DBS for OCD. In sum, we have established a protocol for recruiting and genomically characterizing trOCD cases. Preliminary results suggest that this will be an informative strategy for finding risk genes in OCD.
Atomic and electronic structures of a vacancy in amorphous silicon
Creators: name: Pedersen, Andreas
name: Pizzagalli, Laurent
name: Jonsson, Hannes
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Locally, the atomic structure in well annealed amorphous silicon appears similar to that of crystalline silicon. We address here the question whether a point defect, specifically a vacancy, in amorphous silicon also resembles that in the crystal. From density functional theory calculations of a large number of nearly defect free configurations, relaxed after an atom has been removed, we conclude that there is little similarity. The analysis is based on formation energy, relaxation energy, bond lengths, bond angles, Voronoï volume, coordination, atomic charge and electronic gap states. All these quantities span a large and continuous range in amorphous silicon and while the removal of an atom leads to the formation of one to two bond defects and to a lowering of the local atomic density, the relaxation of the bonding network is highly effective, and the signature of the vacancy generally unlike that of a vacancy in the crystal.
description: 9 pages, 8 figures
Polypodiales
Creators: name: Peruzzi, Lorenzo
name: Conti, Fabio
name: Bartolucci, Fabrizio
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Polypodiopsida
Polypodiales

description: Polypodiales  Aspleniaceae
 Asplenium adulterinum Milde subsp. presolanense Mokry, Rasbach & Reichst. NE Italy (LOM)
description: Published as part of Peruzzi, Lorenzo, Conti, Fabio & Bartolucci, Fabrizio, 2014, An inventory of vascular plants endemic to Italy, pp. 1-75 in Phytotaxa 168 (1) on page 9, DOI: 10.11646/phytotaxa.168.1.1, http://zenodo.org/record/10089750
Observation of KsKs resonances in deep inelastic scattering at HERA
Creators: name: ZEUS Collaboration
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Inclusive KsKs production in deep inelastic ep scattering at HERA has been studied with the ZEUS detector using an integrated luminosity of 120 pb-1. Two states are observed at masses of 1537 (+9)(-8) MeV and 1726 +- 7 MeV, as well as an enhancement around 1300 MeV. The state at 1537 MeV is consistent with the well established f2'(1525). The state at 1726 MeV may be the glueball candidate f0(1710). However, it's width of 38 (+20)(-14) MeV is narrower than 125 +- 10 MeV observed by previous experiments for the f0(1710).
description: 13 pages, 1 table and 3 figures. Updated with minor changes to the text requested by the journal referee. Accepted by Physics Letters B
Identifying target populations to align with decision makers’ needs
Creators: name: Matthews, Anthony A
name: Lund, Jennifer L
Publisher: name: Oxford University Press (OUP)
Year: 2024

description: Randomized trials estimate the average treatment effect within individuals that are eligible, invited and agree to enroll. However, decision makers often require evidence that extends beyond the trial's enrolled population to inform policy or actions for their specific target population. Each decision maker has distinct target populations, the composition of which may not often align with that of the trial population. As researchers, we should identify a decision maker for whom we aim to generate evidence early in the research process. We can then specify a target population of their interest and determine if a policy or action can be informed using results from a trial alone, or if additional complementary real-world data and analysis are required. In this commentary, we outline five key groupings of decision makers: policymakers, payers, purchasers, providers, and patients. We then specify relevant target populations for decision makers interested in the effectiveness of beta-blockers following a myocardial infarction with preserved ejection fraction. Finally, we summarize the scenarios in which results from a randomized trial may or may not apply to these target populations and suggest relevant analytic approaches that can generate evidence to better align with a decision makers' needs.
Studying Two-body Nonleptonic Weak Decays of Hyperons with Topological Diagram Approach
Creators: name: Xu, Yuan-Guo
name: Cheng, Xiao-Dong
name: Zhang, Jie-Lei
name: Wang, Ru-Min
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Many decays of light baryons consisting of light $u,d,s$ quarks have been measured, and these measurements will help us to understand the decay properties of light baryons. In this work, we study two-body nonleptonic weak decays of light baryon octet $(T_8)$ and baryon decuplet $(T_{10})$ by the topological diagram approach (TDA) under the SU(3) flavor symmetry for the first time. We find that (1) the TDA and the SU(3) irreducible representation approach (IRA) match consistently in $T_{10}\to T^{(')}_{8,10}P_8$ ($P_8$ is the light pseudoscalar meson octet); (2) almost all relevant not-yet-measured $\mathcal{B}(T_{10}\to T_8 P_8)$ may be predicted by using three experimental data of $\mathcal{B}(Ω^-\to Ξ^0π^-,Ξ^-π^0,Λ^0K^-)$, and the upper limits of $\mathcal{B}(T_{10}\to T{'}_{10}π^-)$ may be obtained from the experimental upper limit of $\mathcal{B}(Ω^-\to Ξ^{*0}π^-)$ by both the TDA and the IRA together, nevertheless, all new predicted branching ratios are too small to br reached in current experiments; (3) $T_8\to T'_8 P_8$ decays are quite complex in terms of the TDA, and we find that W-exchange diagrams give large and even dominant contributions by using relevant experimental data and the isospin relations.
description: 14 pages, 1 figure
Pinales
Creators: name: Peruzzi, Lorenzo
name: Conti, Fabio
name: Bartolucci, Fabrizio
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Pinopsida
Pinales

description: Pinales  Pinaceae
 Abies nebrodensis (Lojac.) Mattei
SIC
 Pinus nigra Arn. subsp. laricio Palib. ex Maire
N Italian peninsula (TOS); S Italian peninsula (CAL); SIC (Corsica)
description: Published as part of Peruzzi, Lorenzo, Conti, Fabio & Bartolucci, Fabrizio, 2014, An inventory of vascular plants endemic to Italy, pp. 1-75 in Phytotaxa 168 (1) on page 9, DOI: 10.11646/phytotaxa.168.1.1, http://zenodo.org/record/10089750
CCD UBV photometric and Gaia astrometric study of eight open clusters- ASCC 115, Collinder 421, NGC 6793, NGC 7031, NGC 7039, NGC 7086, Roslund 1 and Stock 21
Creators: name: Yontan, T.
name: Bilir, S.
name: Bostanci, Z. F.
name: Ak, T.
name: Ak, S.
name: Guver, T.
name: Paunzen, E.
name: Urgup, H.
name: Celebi, M.
name: Akti, B. A.
name: Gokmen, S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this study, we carried out CCD UBV photometry of eight open clusters, ASCC 115, Collinder 421, NGC 6793, NGC 7031, NGC 7039, NGC 7086, Roslund 1, Stock 21, and determined their reddening, metallicity, distance, age, and mass functions. We used new Gaia Data Release 2 (DR2) astrometric data to separate cluster member stars from the field stars and obtain precise structural and astrophysical parameters. To identify cluster member stars we utilized an unsupervised membership assignment code (UPMASK), which is based on the photometric and astrometric data. The density distributions for the open clusters show good fits with the empirical King model except for Roslund 1 and Stock 21 not having central concentration. The colour excesses and metallicities were derived separately using U-B vs B-V two-colour diagrams. Keeping these parameters as constants, we simultaneously calculated distance moduli and ages of the clusters from V vs B-V and V vs U-B colour-magnitude diagrams using PARSEC theoretical isochrones. Taking into account Gaia DR2 proper motion components and parallaxes of the member stars, we also calculated mean proper motions and distances for the clusters. Distances derived both from isochrone fitting to colour-magnitude diagrams of the clusters and Gaia DR2 trigonometric parallaxes are compatible with each other. Slopes of the mass functions of the eight open clusters are in good agreement with Salpeter (1955) value of 1.35.
description: 24 pages, 12 figures and 7 tables, accepted for publication in Astrophysics and Space Science
Radion Assisted Gauge Inflation
Creators: name: Fairbairn, M.
name: Lopez-Honorez, L.
name: Tytgat, M. H. G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose an extension to the recently proposed extranatural or gauge inflation scenario in which the radius modulus field around which the Wilson loop is wrapped assists inflation as it shrinks. We discuss how this might lead to more generic initial conditions for inflation.
description: 10 pages, 2 figures
Quaternary Stratigraphy of Southern Bavaria
Creators: name: Doppler, Gerhard
name: Kroemer, Ernst
name: Rögner, Konrad
name: Wallner, Johannes
name: Jerz, Hermann
name: Grottenthaler, Walter
Publisher: name: Geozon Science Media
Year: 2011

description: Eine Übersicht der aktuellen stratigraphischen Bezeichnungen für die quartäre Schichtenfolge Südbayerns wird gegeben, wie sie am Geologischen Dienst des Bayerischen Landesamts für Umwelt in Verwendung ist. Unterschiedliche stratigraphische Gliederungsansätze für kontinentale Quartärablagerungen werden vorgestellt und die klimatostratigraphische Einteilung sowie die Terrassenstratigraphie als in Bayern meistverwendete Varianten näher ausgeführt. Die Beschreibung der zugehörigen, bisher informellen Einheiten bezweckt eine Dokumentation des jeweiligen Stands der Verwendung und kann womöglich formelle Definitionen vorbereiten. Die klimatostratigraphischen Einheiten sollen den gesamten Zeitraum des Quartärs lückenlos abdecken und vertreten derzeit Überregionale, formelle Stufenbezeichnungen. In Bayern wird weiterhin die klassische Gliederung nach Penck & Brückner (1901–1909) mit ihren Erweiterungen verwendet. Neue Erkenntnisse über eine stärkere Gliederung des Eiszeitalters durch untergeordnete Kalt- und Warmphasen werden in dieses System integriert. Für diese Gliederung des Quartärs in Südbayern ausschlaggebend sind zum Einen die Terrassentreppen, deren zeitliche Interpretation eine Grundlage der sogenannten Morphostratigraphie bildet. Die zweite Grundlage bilden Endmoränengirlanden, die mit den davon ausgehenden Terrassen glazial-glazifluviale Sequenzen (‚Glaziale Serien’) bilden. Neben der ausführlichen Dokumentation der Terrassen-Einheiten, werden deshalb auch verschiedene Endmoränen-Gliederungen vorgestellt. Weitere Nomenklaturen, die auf anderen Kriterien beruhen oder zu anderen chronologischen Einstufungen gelangen, sind für Bayern oder in den angrenzenden Ländern in Gebrauch. Auch die beschriebenen stratigraphischen Gliederungen werden nicht von allen Bearbeitern in gleicher Weise verwendet. Die Dokumentation der derzeitigen Verwendung soll eine Abstimmung dieser Nomenklaturen im Interesse der Nutzer fördern.
description: research
Evaluating Dynamic Conditional Quantile Treatment Effects with Applications in Ridesharing
Creators: name: Shi, Chengchun
name: Li, Yi
name: Lu, Zhaohua
name: Li, Ting
name: Zhu, Hongtu
Publisher: name: Taylor & Francis
Year: 2024

description: Many modern tech companies, such as Google, Uber, and Didi, use online experiments (also known as A/B testing) to evaluate new policies against existing ones. While most studies concentrate on average treatment effects, situations with skewed and heavy-tailed outcome distributions may benefit from alternative criteria, such as quantiles. However, assessing dynamic quantile treatment effects (QTE) remains a challenge, particularly when dealing with data from ride-sourcing platforms that involve sequential decision-making across time and space. In this article, we establish a formal framework to calculate QTE conditional on characteristics independent of the treatment. Under specific model assumptions, we demonstrate that the dynamic conditional QTE (CQTE) equals the sum of individual CQTEs across time, even though the conditional quantile of cumulative rewards may not necessarily equate to the sum of conditional quantiles of individual rewards. This crucial insight significantly streamlines the estimation and inference processes for our target causal estimand. We then introduce two varying coefficient decision process (VCDP) models and devise an innovative method to test the dynamic CQTE. Moreover, we expand our approach to accommodate data from spatiotemporal dependent experiments and examine both conditional quantile direct and indirect effects. To showcase the practical utility of our method, we apply it to three real-world datasets from a ride-sourcing platform. Theoretical findings and comprehensive simulation studies further substantiate our proposal. Supplementary materials for this article are available online Code implementing the proposed method is also available at: https://github.com/BIG-S2/CQSTVCM.
Mixed curvature almost flat manifolds
Creators: name: Kapovitch, Vitali
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C20, 53C21

description: We prove a mixed curvature analogue of Gromov's almost flat manifolds theorem for upper sectional and lower Bakry-Emery Ricci curvature bounds.
A splicing formula for the LMO invariant
Creators: name: Massuyeau, Gwenael
name: Moussard, Delphine
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 57M27

description: We prove a "splicing formula" for the LMO invariant, which is the universal finite-type invariant of rational homology $3$-spheres. Specifically, if a rational homology $3$-sphere $M$ is obtained by gluing the exteriors of two framed knots $K_1 \subset M_1$ and $K_2\subset M_2$ in rational homology $3$-spheres, our formula expresses the LMO invariant of $M$ in terms of the Kontsevich-LMO invariants of $(M_1,K_1)$ and $(M_2,K_2)$. The proof uses the techniques that Bar-Natan and Lawrence developed to obtain a rational surgery formula for the LMO invariant. In low degrees, we recover Fujita's formula for the Casson-Walker invariant and we observe that the second term of the Ohtsuki series is not additive under "standard" splicing. The splicing formula also works when each $M_i$ comes with a link $L_i$ in addition to the knot $K_i$, hence we get a "satellite formula" for the Kontsevich-LMO invariant.
description: 25 pages
O COMÉRCIO INTERNACIONAL DA CARNE BOVINA BRASILEIRA E A INDÚSTRIA FRIGORÍFICA EXPROTADORA
Creators: name: Sabadin, Catiana
name: Michels, Ido Luiz
name: Sabadin, Catiana
name: Michels, Ido Luiz
Publisher: name: Unknown
Year: 2006
Subjects: subject: International Relations/Trade
subject: Livestock Production/Industries
subject: Comércio internacional
subject: Carne bovina
subject: Indústria frigorífica

description: A pecuária de corte brasileira ocupa posição de destaque na economia e no comércio internacional. O mercado mundial de carnes passou por transformações significativas na última década. A partir de 2003 o Brasil ultrapassa a Austrália e se torna o maior exportador de carne bovina do mundo. Este artigo tem como objetivo principal analisar as principais transformações que estão ocorrendo na indústria frigorífica brasileira bem como nos demais elos da cadeia produtiva, em função da inserção global. Os métodos utilizados para o estudo foram o exploratório, através da revisão bibliográfica e a pesquisa descritiva, através de entrevista qualificada aplicada em quatro grupos frigoríficos exportadores.. Como principais resultados, conclui-se que a expressiva inserção do Brasil no mercado internacional da carne bovina originou transformações estruturais na indústria frigorífica exportadora e por conseqüência na cadeia produtiva. Os frigoríficos nacionais, de uma forma geral, ainda apresentam baixo nível de profissionalização, situação que está se alterando com o avanço das exportações. A indústria frigorífica passa por uma série de adaptações para suprir as exigências do mercado mundial, o que está contribuindo para a modernização da gestão produtiva, com avanços em termos logísticos, tecnológicos e da estrutura empresarial.
IRSL Signals from Maar Lake Sediments Stimulated at Various Temperatures
Creators: name: Schmidt, Esther Dorothe
name: Murray, Andrew S.
name: Sirocko, Frank
name: Tsukamoto, Sumiko
name: Frechen, Manfred
Publisher: name: Geozon Science Media
Year: 2011

description: Optisch stimulierte Lumineszenz (OSL) und infrarot stimulierte Lumineszenz (IRSL) wurden an sieben Feinkorn Proben von Kern JW3 aus dem Trockenmaar Jungfernweiher gemessen. Zwei verschiedene post-IR IRSL Messprotokolle (blaue Detektion) wurden an den polymineralischen Feinkörnern (4–11 μm) angewandt. Diese Protokolle beinhalten eine Stimulation mit IR bei 50°C für bis zu 200 s vor einer weiteren IR Stimulation bei erhöhten Temperaturen bei 225°C für 100 s oder 290°C für 200 s. Die OSL von Quarz sättigt bei Dosen von 260–300 Gy und die De-Werte, die mit IRSL bei 50°C (IR50) erhalten werden, nehmen mit der Tiefe nicht zu. Dies weist darauf hin, dass auch dieses Signal bei ~500 Gy in Sättigung geht. De-Werte des post-IR IRSL Signals bei 225°C (pIRIR225) und 290°C (pIRIR290) nehmen jedoch mit der Tiefe von ~800 Gy bis ~1400 Gy zu, und zeigen ein korrigiertes Minimalalter von ~200 ka für die jüngsten Sedimente an. Die durchschnittlichen im Labor gemessene Fadingraten liegen für IR50 bei 4.09 ± 0.02%/decade und für pIRIR225 bei 2.55 ± 0.14%/decade. Für Probe JWS1 wurde für pIRIR290 ein g-value von 0.52 ± 1.12%/decade gemessen. Sowohl fading korrigierte pIRIR225 als auch unkorrigierte pIRIR290 De-Werte der jüngsten Probe (~16 m unterhalb der heutigen Erdoberfläche) weisen auf ein Alter von ~250 ka für die oberste Probe hin. Für die ältesten Proben, die in ~94 m unterhalb der heutigen Erdoberfläche genommen wurden, wurden Alter von bis zu ~400 ka gemessen.
description: research
Visible Effects of the Hidden Sector
Creators: name: Dine, M.
name: Fox, P. J.
name: Gorbatov, E.
name: Shadmi, Y.
name: Shirman, Y.
name: Thomas, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The renormalization of operators responsible for soft supersymmetry breaking is usually calculated by starting at some high scale and including only visible sector interactions in the evolution equations, while ignoring hidden sector interactions. Here we explain why this is correct only for the most trivial structures in the hidden sector, and discuss possible implications. This investigation was prompted by the idea of conformal sequestering. In that framework hidden sector renormalizations by nearly conformal dynamics are critical. In the original models of conformal sequestering it was necessary to impose hidden sector flavor symmetries to achieve the sequestered form. We present models which can evade this requirement and lead to no-scale or anomaly mediated boundary conditions; but the necessary structures do not seem generic. More generally, the ratios of scalar masses to gaugino masses, the $μ$-term, the $Bμ$-term, $A$-terms, and the gravitino mass can be significantly affected.
description: 23 pages, no figures
Piperales
Creators: name: Peruzzi, Lorenzo
name: Conti, Fabio
name: Bartolucci, Fabrizio
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Piperales

description: Piperales  Aristolochiaceae
 Aristolochia clusii Lojac.
 S Italian peninsula (PUG, BAS, CAL); SIC (Malta) Aristolochia sicula Tineo
SIC
AN INVENTORY OF VASCULAR PLANTS ENDEMIC TO ITALY
 Phytotaxa 168 (1) © 2014 Magnolia Press 9
 Aristolochia tyrrhena E.Nardi & Arrigoni SAR (Corsica)
description: Published as part of Peruzzi, Lorenzo, Conti, Fabio & Bartolucci, Fabrizio, 2014, An inventory of vascular plants endemic to Italy, pp. 1-75 in Phytotaxa 168 (1) on pages 9-10, DOI: 10.11646/phytotaxa.168.1.1, http://zenodo.org/record/10089750
Giant shift upon strain on the fluorescence spectrum of V$_{\rm N}$N$_{\rm B}$ color centers in $h$-BN
Creators: name: Li, Song
name: Chou, Jyh-Pin
name: Hu, Alice
name: Plenio, Martin B.
name: Udvarhelyi, Péter
name: Thiering, Gergő
name: Abdi, Mehdi
name: Gali, Adam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the effect of strain on the physical properties of the nitrogen antisite-vacancy pair in hexagonal boron nitride ($h$-BN), a color center that may be employed as a quantum bit in a two-dimensional material. With group theory and ab-initio analysis we show that strong electron-phonon coupling plays a key role in the optical activation of this color center. We find a giant shift on the zero-phonon-line (ZPL) emission of the nitrogen antisite-vacancy pair defect upon applying strain that is typical of $h$-BN samples. Our results provide a plausible explanation for the experimental observation of quantum emitters with similar optical properties but widely scattered ZPL wavelengths and the experimentally observed dependence of the ZPL on the strain.
description: 7 pages, 3 figures
Spin splitting and precession in quantum dots with spin-orbit coupling: the role of spatial deformation
Creators: name: Valin-Rodriguez, Manuel
name: Puente, Antonio
name: Serra, Llorens
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Extending a previous work on spin precession in GaAs/AlGaAs quantum dots with spin-orbit coupling, we study the role of deformation in the external confinement. Small elliptical deformations are enough to alter the precessional characteristics at low magnetic fields. We obtain approximate expressions for the modified $g$ factor including weak Rashba and Dresselhaus spin-orbit terms. For more intense couplings numerical calculations are performed. We also study the influence of the magnetic field orientation on the spin splitting and the related anisotropy of the $g$ factor. Using realistic spin-orbit strengths our model calculations can reproduce the experimental spin-splittings reported by Hanson et al. (cond-mat/0303139) for a one-electron dot. For dots containing more electrons, Coulomb interaction effects are estimated within the local-spin-density approximation, showing that many features of the non-iteracting system are qualitatively preserved.
description: 7 pages, 7 figures
Author Correction: Ultra-long-acting in-situ forming implants with cabotegravir protect female macaques against rectal SHIV infection
Creators: name: Prasher, Alka
name: Massud, Ivana
name: Seixas, Josilene Nascimento
name: Benhabbour, S. Rahima
name: Young, Isabella C.
name: Heneine, Walid
name: Garcia, J. Victor
name: Montgomery, Stephanie A.
name: Kovarova, Martina
name: Kashuba, Angela D. M.
name: Garcίa-Lerma, J. Gerardo
name: Pallerla, Aryani
name: Schauer, Amanda
name: Maturavongsadit, Panita
name: Dobard, Charles W.
name: Sykes, Craig
name: Edwards, Tiancheng
name: Mitchell, James
name: De la Cruz, Gabriela
name: Cottrell, Mackenzie L.
name: Thorson, Allison
name: Shrivastava, Roopali
name: Wong-Sam, Andres
name: Dinh, Chuong
name: Mrotz, Victoria
Publisher: name: Springer Nature
Year: 2024

description: Correction to "Ultra-long-acting in-situ forming implants with cabotegravir protect female macaques against rectal SHIV infection"
title: Estimating abundance of African great apes
Creators: name: Howe, Eric J.
Publisher: name: University of St Andrews
Year: 2019

description: All species and subspecies of African great apes are listed by the International Union for the Conservation of Nature as endangered or critically endangered, and populations continue to decline. As human populations and industry expand into great ape habitat, efficient, reliable estimators of great ape abundance are needed to inform conservation status and land-use planning, to assess adverse and beneficial effects of human activities, and to help funding agencies and donors make informed and efficient contributions. Fortunately, technological advances have improved our ability to sample great apes remotely, and new statistical methods for estimating abundance are constantly in development. Following a brief general introduction, this thesis reviews established and emerging approaches to estimating great ape abundance, then describes new methods for estimating animal density from photographic data by distance sampling with camera traps, and for selecting among models of the distance sampling detection function when distance data are overdispersed. Subsequent chapters quantify the effect of violating the assumption of demographic closure when estimating abundance using spatially explicit capture–recapture models for closed populations, and describe the design and implementation of a camera trapping survey of chimpanzees at the landscape scale in Kibale National Park, Uganda. The new methods developed have generated considerable interest, and allow abundances of multiple species, including great apes, to be estimated from data collected during a single photographic survey. Spatially explicit capture–recapture analyses of photographic data from small study areas yielded accurate and precise estimates of chimpanzee abundance, and this combination of methods could be used to enumerate great apes over large areas and in dense forests more reliably and efficiently than previously possible.
Chronology of Weichselian main ice marginal positions in north-eastern Germany
Creators: name: Lüthgens, Christopher
name: Böse, Margot
Publisher: name: Geozon Science Media
Year: 2011

description: Bisher basierte die Chronologie des Weichsel-Pleniglazials in Nord-Ost-Deutschland im Wesentlichen auf morphostratigraphischen Befunden und Radiokohlenstoffdatierungen organischer Sedimente aus dem Liegenden glazigener Ablagerungen. Im Laufe der letzen Jahre kamen im Rahmen verschiedener Studien Datierungsmethoden zum Einsatz, mit deren Hilfe es möglich war, die glazigenen Sedimente direkt zu datieren: Optisch Stimulierte Lumineszenz (OSL) von glazifluvialen Sedimenten und Oberflächen-Expositionsdatierungen (surface exposure dating, SED) von erratischen Blöcken. Wir fassen die Ergebnisse dieser Studien zusammen und bewerten sie auf der Grundlage eines prozessbasierten Interpretationsschemas neu, um somit eine neue Chronologie für die weichselzeitlichen Haupteisrandlagen in Nord-Ost-Deutschland vorstellen zu können. Auf der Grundlage der verfügbaren Daten lassen sich zwei Phasen während des letzten Glazials nachweisen, wobei die Brandenburger Phase einen Eisvorstoß im späten Marinen Isotopenstadium (MIS) 3 bis frühen MIS 2 repräsentiert, während die Pommersche Phase einen Eisvorstoß widerspiegelt, der seinen Maximalstand um ~20 ka erreichte. Hinsichtlich der endgültigen Stabilisierung der Geländeoberflächen nach der initialen Eisfreiwerdung zeigt sich eine hohe Abhängigkeit von Phasen aktiver Transformation unter periglazialen Bedingungen. Erste Ergebnisse numerischer Datierungen deuten auf eine solche Aktivitätsphase um ~15 ka hin.
description: research
RACIONALIDADE LIMITADA E OPORTUNISMO NA CADEIA DO CAFÉ: IMPACTOS NAS FORMAS CONTRATUAIS
Creators: name: Ferreira, Gabriel Murad Velloso
name: Waquil, Paulo Dabdab
name: Goncalves, Wilson Magela
name: Ferreira, Gabriel Murad Velloso
name: Waquil, Paulo Dabdab
name: Goncalves, Wilson Magela
Publisher: name: Unknown
Year: 2006
Subjects: subject: Crop Production/Industries
subject: Contratos
subject: Oportunismo
subject: Racionalidade Limitada
subject: Governança
subject: Cafés Especiais

description: O presente trabalho objetivou analisar os impactos do comportamento oportunista e da racionalidade limitada na forma contratual adotada pelo Consórcio Agrícola de Fazendas Especializadas (C.A.F.E). Para isso, realizou-se um estudo de caso com o intuito de abranger as características mais importantes do tema que se pesquisou, bem como seu processo de desenvolvimento. O referencial teórico que sustentou a pesquisa foi a Economia dos Custos de Transação (ECT). Mediante a análise das variáveis abordadas pela ECT, mais especificamente: racionalidade limitada, oportunismo e formas contratuais, concluiu-se que: a existência do oportunismo interfere de certo modo na confiança no caso estudado e dessa forma aumenta os custos de transação. No mesmo sentido, a assimetria informacional reforça a limitação da racionalidade dos agentes e, portanto, aumenta os custos de transação. Isto deixa claro a importância destes elementos na definição da forma contratual. No caso estudado verificou-se a necessidade de uma estrutura contratual formalizada mais especificada e detalhada para que se possa reduzir os custos de transação gerados pelas ações oportunísticas e pela racionalidade limitada dos agentes. Este último elemento se mostrou mais presente nos produtores, enquanto que o oportunismo foi observado como estando em mesmo nível em ambas as partes. De acordo com as características observadas no Consórcio a forma contratual que mais se adequa é a relacional, onde o ponto de referência principal é a própria relação das partes e a autonomia entre estas é mantida. No entanto é importante ressaltar a possibilidade do comportamento oportunista nesse tipo de contrato, o que é contrabalançado pela confiança.
New hadrons as ultra-high energy cosmic rays
Creators: name: Kachelriess, M.
name: Semikoz, D. V.
name: Tortola, M. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Ultra-high energy cosmic ray (UHECR) protons produced by uniformly distributed astrophysical sources contradict the energy spectrum measured by both the AGASA and HiRes experiments, assuming the small scale clustering of UHECR observed by AGASA is caused by point-like sources. In that case, the small number of sources leads to a sharp exponential cutoff at the energy E<10^{20} eV in the UHECR spectrum. New hadrons with mass 1.5-3 GeV can solve this cutoff problem. For the first time we discuss the production of such hadrons in proton collisions with infrared/optical photons in astrophysical sources. This production mechanism, in contrast to proton-proton collisions, requires the acceleration of protons only to energies E<10^{21} eV. The diffuse gamma-ray and neutrino fluxes in this model obey all existing experimental limits. We predict large UHE neutrino fluxes well above the sensitivity of the next generation of high-energy neutrino experiments. As an example we study hadrons containing a light bottom squark. These models can be tested by accelerator experiments, UHECR observatories and neutrino telescopes.
description: 17 pages, revtex style; v2: shortened, as to appear in PRD
Deterministic and randomized motions in single-well potentials
Creators: name: Mandrysz, Michal
name: Dybiec, Bartlomiej
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Newtonian, undamped motion in single-well potentials belong to a class of well-studied conservative systems. Here, we investigate and compare long-time properties of fully deterministic motions in single-well potentials with analogous randomized systems. We consider a special type of energy-conserving randomization process: the deterministic motion is interrupted by hard velocity reversals $\vec{v}(t_i)\to-\vec{v}(t_i)$ at random time instants $t_i$. In the 1D case, for fixed initial conditions, the differences in probability distributions disappear in the long-time limit making asymptotic densities insensitive to the selection of random time instants when velocity is reversed. Substantially different probability distributions can be obtained, for instance, through the additional randomization of initial conditions. Analogously, in 2D setups, the probability distributions asymptotically are insensitive to velocity reversals.
description: 20 pages, 7 figures
Excitation of Physical Vacuum
Creators: name: Volkov, M. K.
name: Kokoulina, E. S.
name: Kuraev, E. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Introducing such a notion as a "excitation of physical vacuum" we do an attempt to explain some strange experimental facts such as large value of $σ$-term measured in pion-nucleon low energy scattering, $ΔT=1/2$ rule in kaon two pion decay modes, the ratio of strange to nonstrange yield in low energy proton-antiproton annihilation, excess of soft photons in hadron's collisions. As a test of our approach we suggest to measure the multiparticle production processes and decays of heavy virtual objects.
description: 8 pages, 3 figures
Up-regulation of miR-155 potentiates CD34+ CML stem/progenitor cells to escape from the growth-inhibitory effects of TGF-β1 and BMP signaling
Creators: name: Mahdloo, Touba
name: Sahami, Pantea
name: Ramezani, Reihaneh
name: Jafarinia, Mojtaba
name: Goudarzi, Hamedreza
name: Babashah, Sadegh
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2021
Subjects: chronic myeloid leukemia
bone morphogenetic protein
TGF-β signaling
miR-155

description: microRNAs (miRNAs or miRs) play key roles in different stages of chronic myeloid leukemia (CML) pathogenesis. The present study aimed to demonstrate whether miR-155 enables CD34+ CML cells to escape from the growth-inhibitory effects of TGF-β1 and bone morphogenetic protein (BMP) signaling. Among differentially expressed miRNAs in CD34+ CML cells, miR-155 was highly up-regulated. QRT-PCR revealed an inverse correlation between miR-155 and two key members of the TGF-β pathway—TGF-βR2 and SMAD5. Results showed that SMAD5 is not only up-regulated through BMPs treatment, but recombinant TGF-β1 can also induce SMAD5 in CML cells. We also demonstrated that TGF-β1-mediated phosphorylation of SMAD1/5 was abolished by pre-treatment with the blocking TGF-βR2 antibody, suggesting a possible involvement of TGF-βR2. Additionally, overexpression of miR-155 significantly promoted the proliferation rate of CD34+ CML cells. Results showed that siRNA-mediated knockdown of SMAD5 had a promoting effect on CD34+ CML cell proliferation, suggesting that SMAD5 knock-down recapitulates the proliferative effects of miR-155. Importantly, TGF-β1 and BMP2/4 treatment had inhibitory effects on cell proliferation; however, miR-155 overexpression enabled CD34+ CML cells to evade the anti-proliferative effects of TGF-β1 and BMPs. Consistently, down-regulation of miR-155 augmented the promoting effects of TGF-β1 and BMP signaling on inducing apoptosis in CD34+ CML stem cells. Our findings demonstrated that targeting of SMAD5 and TGF-βR2 links miR-155 to TGF-β signaling in CML. Overexpression of miR-155 enables CD34+ CML cells to evade growth-inhibitory effects of the TGF-β1 and BMP signaling, providing new perspectives for miR-155 as a therapeutic target for CML.
description: EXCLI Journal; 20:Doc748; ISSN 1611-2156
Description of rotating $N=Z$ nuclei in terms of isovector pairing
Creators: name: Afanasjev, A. V.
name: Frauendorf, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A systematic investigation of the rotating $N=Z$ even-even nuclei in the mass $A=58-80$ region has been performed within the frameworks of the Cranked Relativistic Mean field, Cranked Relativistic Hartree Bogoliubov theories and cranked Nilsson-Strutinsky approach. Most of the experimental data is well accounted for in the calculations. The present study suggests that there is strong isovector $np$-pair field at low spin, the strength of which is defined by the isospin symmetry. At high spin, the isovector pair field is destroyed and the data are well described by the calculations assuming zero pairing. No clear evidence for the existence of the isoscalar $t=0$ $np$-pairing has been obtained in the present investigation.
description: 20 pages + 19 figures, submitted to Phys. Rev. C
Superconductivity in twisted transition metal dichalcogenide homobilayers
Creators: name: Zhu, Jihang
name: Chou, Yang-Zhi
name: Xie, Ming
name: Sarma, Sankar Das
Publisher: name: arXiv
Year: 2024
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: For the first time, robust superconductivity has been independently observed in twisted WSe$_2$ bilayers by two separate groups [Y. Xia et al., arXiv:2405.14784; Y. Guo et al., arXiv:2406.03418.]. In light of this, we explore the possibility of a universal superconducting pairing mechanism in twisted WSe$_2$ bilayers. Using a continuum band structure model and a phenomenological boson-mediated effective electron-electron attraction, we find that intervalley intralayer pairing predominates over interlayer pairing. Notably, despite different experimental conditions, both twisted WSe$_2$ samples exhibit a comparable effective attraction strength. This consistency suggests that the dominant pairing glue is likely independent of the twist angle and layer polarization, pointing to a universal underlying boson-induced pairing mechanism.