cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Euclidean Black Saddles and AdS$_4$ Black Holes
Creators: name: Bobev, Nikolay
name: Charles, Anthony M.
name: Min, Vincent S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We find new asymptotically locally AdS$_4$ Euclidean supersymmetric solutions of the STU model in four-dimensional gauged supergravity. These "black saddles" have an $S^1\times Σ_{\mathfrak{g}}$ boundary at asymptotic infinity and cap off smoothly in the interior. The solutions can be uplifted to eleven dimensions and are holographically dual to the topologically twisted ABJM theory on $S^1\times Σ_{\mathfrak{g}}$. We show explicitly that the on-shell action of the black saddle solutions agrees exactly with the topologically twisted index of the ABJM theory in the planar limit for general values of the magnetic fluxes, flavor fugacities, and real masses. This agreement relies on a careful holographic renormalization analysis combined with a novel UV/IR holographic relation between supergravity parameters and field theory sources. The Euclidean black saddle solution space contains special points that can be Wick-rotated to regular Lorentzian supergravity backgrounds that correspond to the well-known supersymmetric dyonic AdS$_4$ black holes in the STU model.
description: 78 pages, 7 figures. v2: references added, minor typos fixed. v3: a few more minor typos fixed
How high is too high? Soaring Interest Rates and the Elasticity of Demand for Microcredit
Creators: name: Salazar, Gabriela L.
name: Turvey, Calum G.
name: Bogan, Vicki
name: Cubero, Lourdes
name: Salazar, Gabriela L.
name: Turvey, Calum G.
name: Bogan, Vicki
name: Cubero, Lourdes
Publisher: name: Unknown
Year: 2010
Subjects: Financial Economics

description: How high is too high? Soaring Interest Rates and the Elasticity of Demand for Microcredit
Additional file 3 of The microbiome of diabetic foot ulcers: a comparison of swab and tissue biopsy wound sampling techniques using 16S rRNA gene sequencing
Creators: name: J. Travis
name: M. Malone
name: H. Hu
name: A. Baten
name: K. Johani
name: F. Huygens
name: K. Vickery
name: Benkendorff, K.
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Additional file 3 Supplementary Table S5. Dendogram from hierarchical cluster analysis of bacterial communities indicating no clustering
Potencial da logística ferroviária para exportação de açúcar em São Paulo: recomendações de localização para armazéns intermodais
Creators: name: Oliveira, Ana Maria Kefalas
name: Caixeta Filho, Jose Vicente
name: Oliveira, Ana Maria Kefalas
name: Caixeta Filho, Jose Vicente
Publisher: name: Unknown
Year: 2007
Subjects: subject: Agribusiness
subject: intermodal transportation
subject: railway transport
subject: sugar market.

description: This study analyzes the best warehousing location for sugar exportation in the state of Sao Paulo using the railway transportation. A mixed integer programming model was developed and its results indicate some trends for localization and capacity of these warehouses. Four scenarios were elaborated and they showed high competitiveness of the intermodal transport compared to the alternative of road transportation from the mill to the port. It was also confirmed that there is a possibility to increase the market share of the railway transportation for Sao Paulo’s sugar exports.
Impacts of a liberalization in the USA market for Frozen Concentrated Orange Juice: why Florida´s producers are so afraid?
Creators: name: Fracalanza, Paulo Sergio
name: Ferreira, Adriana Nunes
name: Neves, Marcos Fava
name: Fracalanza, Paulo Sergio
name: Ferreira, Adriana Nunes
name: Neves, Marcos Fava
Publisher: name: Unknown
Year: 2007
Subjects: subject: Agribusiness
subject: Commercial liberalization
subject: reduction of trade barriers
subject: partial equilibrium models
subject: frozen concentrated orange juice (FCOJ).

description: This study aims at examining the resource allocation and welfare implications of the reduction of barriers in the United States market for Frozen Concentrated Orange Juice (FCOJ) imported from Brazil. The present paper is organized as follows: section 2 presents an overview of the main features of the market and current trade regime for orange juice, as well as the possible impacts of liberalization within FTAA and with the European Union; section 3 describes the partial equilibrium model of imperfect substitute goods used to estimate the impact of trade liberalization in the United States, on prices and quantities and on welfare; in section 4 two possible scenarios for liberalization are designed using the large country model. The last section summarizes the main conclusions.
An Analysis of Bundle Pricing in Horizontal and Vertical Markets: The Case of the U.S. Cottonseed Market
Creators: name: Shi, Guanming
name: Stiegert, Kyle W.
name: Chavas, Jean-Paul
name: Shi, Guanming
name: Stiegert, Kyle W.
name: Chavas, Jean-Paul
Publisher: name: Unknown
Year: 2009
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: Research Methods/ Statistical Methods

description: In this paper, we investigate substitution/complementarity relationships among products sold with different bundled characteristics and under different vertical arrangements. Our conceptual model demonstrates the interactive price impacts emanating from product differentiation, market concentration and market size. The model is applied to the U.S. cottonseed market using transaction level data from 2002 to 2007. This market has been impacted structurally in numerous ways due to the advances and the rapid adoption of seeds with differing bundles of biotechnology traits and vertical penetration emanating from the biotechnology seed industry. Several interesting findings are reported. The econometric investigation finds evidence of sub-additive pricing in the bundling of patented biotech traits. Vertical organization is found to affect pricing and the exercise of market power. While higher market concentration is associated with higher prices, there is also evidence of cross-product complementarity effects that lead to lower prices. Simulation methods are developed to measure the net price effects. These simulations are applicable for use in pre-merger analysis of industries producing differentiated products and exhibiting similar market complexities.
Additional file 2 of The microbiome of diabetic foot ulcers: a comparison of swab and tissue biopsy wound sampling techniques using 16S rRNA gene sequencing
Creators: name: J. Travis
name: M. Malone
name: H. Hu
name: A. Baten
name: K. Johani
name: F. Huygens
name: K. Vickery
name: Benkendorff, K.
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Additional file 2 Supplementary Table S4. Summary of organisms, total reads and relative abundances in swabs and tissue biopsy samples
Defining a model for content requirements from the law: an experience report
Creators: name: Ceci, Marcello
name: Bianculli, Domenico
name: Briand, Lionel C
Publisher: name: University of Limerick
Year: 2025
Subjects: classificationCode: 4612
subject: Software engineering

description: This paper reports on the experience of building a content model in collaboration with a national financial supervisory authority, with the goal of automating the compliance checking activity performed by the agents of the supervisory authority on fund documentation. The work is focused on modelling content requirements found in the law, i.e., deontic rules prescribing that some information is contained in an official document. For such requirements, the main modelling effort revolves around the required content and its information types. We therefore designed a process to build a content model, elaborating design criteria for the model which partly depend on the use case encompassing compliance checking. We built the content model through iterative interactions between a knowledge engineer and domain experts designed to ensure that the model is not limited to representing only the letter of the law, but rather represents the relevant distinctions in the practice of compliance checking. We drew lessons learned regarding the need for setting up classification criteria for information types and handling the trade-off between expressivity and maintainability of the model.
An Analysis of the Pricing of Traits in the U.S. Corn Seed Market
Creators: name: Shi, Guanming
name: Chavas, Jean-Paul
name: Stiegert, Kyle W.
name: Shi, Guanming
name: Chavas, Jean-Paul
name: Stiegert, Kyle W.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: Research Methods/ Statistical Methods

description: This paper investigates the pricing of patented traits in the U.S. hybrid corn seed market under imperfect competition. In a multiproduct context, we first examine how substitution/complementarity relationships among products can affect pricing. This is used to motivate multi-product generalizations of the Herfindahl-Hirschman index (GHHI) capturing cross-market effects of imperfect competition on bundle pricing. The GHHI model is applied to pricing of conventional and patented biotech seeds in the US from 2000-2007. One major finding is that standard component pricing in biotech traits is soundly rejected in favor of subadditive bundle pricing. The econometric estimates show how changes in market structures (as measured by both own- and cross-Herfindahl indexes) affect U.S. corn seed prices.
On the Origin of the Wide HI Absorption Line Toward Sgr A*
Creators: name: Dwarakanath, K. S.
name: Goss, W. M.
name: Zhao, J. H.
name: Lang, C. C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have imaged a region of about 5' extent surrounding Sgr A* in the HI 21 cm-line absorption using the Very Large Array. A Gaussian decomposition of the optical depth spectra at positions within about 2' (approx. 5 pc at 8.5 kpc) of Sgr A* detects a wide line underlying the many narrow absorption lines. The wide line has a mean peak optical depth of 0.32 +/- 0.12 centered at a mean velocity of V(lsr) = -4 +/- 15 km/s. The mean full width at half maximum is 119 +/- 42 km/s. Such a wide line is absent in the spectra at positions beyond about 2' from Sgr A*. The position-velocity diagrams in optical depth reveal that the wide line originates in various components of the circumnuclear disk (radius approx. 1.3') surrounding Sgr A*. These components contribute to the optical depth of the wide line in different velocity ranges. The position-velocity diagrams do not reveal any diffuse feature which could be attributed to a large number of HI clouds along the line of sight to Sgr A*. Consequently, the wide line has no implications either to a global population of shocked HI clouds in the Galaxy or to the energetics of the interstellar medium as was earlier thought.
description: LaTeX, 12 pages and 9 figures, accepted for publication in J. Astrophys. Astr
Sol-Gel Fabrication of Hydrated Vanadium (V) Oxide and Analysis of Its Xerogel Properties
Creators: name: Budko, Yelena
Publisher: name: Cifra LLC
Year: 2025
Subjects: hydrated vanadium (V) oxide sol
xerogel
physicochemical properties

description: Международный научно-исследовательский журнал, Выпуск 4 (154) 2025
Multiscale Complexity of Correlated Gaussians
Creators: name: Metzler, Richard
name: Bar-Yam, Yaneer
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We apply a recently developed measure of multiscale complexity to the Gaussian model consisting of continuous spins with bilinear interactions for a variety of interaction matrix structures. We find two universal behaviors of the complexity profile. For systems with variables that are not frustrated, an exponential decay of multiscale complexity in the disordered regime shows the presence of small-scale fluctuations, and a logarithmically diverging profile of fixed shape near the critical point describes the spectrum of collective modes. For frustrated variables, oscillations in complexity indicate the presence of global or local constraints. These observations show that the multiscale complexity may be a useful tool for interpreting the underlying structure of systems for which pair correlations can be measured.
description: 18 pages, 15 figures
Resonance production in heavy ion collisions
Creators: name: Markert, Christina
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Recent results of resonance production from RHIC at $\sqrt{s_{\rm NN}} = $ 200 GeV and SPS at $\sqrt{s_{\rm NN}} = $ 17 GeV are presented and discussed in terms of the evolution and freeze-out conditions of a hot and dense fireball medium. Yields and spectra are compared with thermal model predictions at chemical freeze-out. Deviations in the low transverse momentum region of the resonance spectrum of the hadronic decay channel, suggest a strongly interaction hadronic phase between chemical and kinetic freeze-out. Microscopic models including resonance rescattering and regeneration are able to describe the trend of the data. The magnitude of the regeneration cross sections for different inverse decay channels are discussed. Model calculations which include elastic hadronic interactions between chemical freeze-out and thermal freeze-out based on the K(892)/K and $Λ$(1520)/$Λ$ ratios suggest a time between two freeze-outs surfaces of $Δτ>$ 4 fm/c. The difference in momentum distributions and yields for the $ϕ$(1020) resonance reconstructed from the leptonic and hadronic decay channels at SPS energy are discussed taking into account the impact of a hadronic phase and possible medium modifications.
description: 8 pages, 4 figures, conference proceedings (SQM2004)
Exploring the Experiences of Social Work Practitioners and Supervisors on the Implementation of Social Work Supervision in the Department of Social Development: A Case Study of King Cetshwayo District Municipality.
Creators: name: Gumbi Sandile Ntethelelo
Publisher: name: Zenodo
Year: 2021

description: ABSTRACT Supervision has been a subject of study for many decades and has been at the centre of social work practice as it exerts its unique significance in the profession. As social work practitioners and supervisors are the key role-players in the process of supervision, it was necessary to understand their experiences. The main aim of the study was to explore and describe the experiences of social work practitioners and supervisors in the Department of Social Development at King Cetshwayo District, so as determine how these experiences have an impact on the service provision. The objectives of the study were to explore the nature of supervision that exists; examine the context within which supervision takes place; explore how social work practitioners and supervisors experience supervision, and examine the experiences of social work practitioners and supervisors to understand how supervision is executed. The study was qualitative that utilized the interpretive paradigm as the philosophical worldview. The study utilized an exploratory-descriptive research design to explore and describe the aspects of the research topic to gain a deeper and in-depth understanding of the researched topic. The purposive sampling was utilized to intentionally sample participants that fit the prearranged criteria. A maximum of seventeen participants was sampled, where thirteen participants were social workers and four participants were social work supervisors. Both telephonic and face-to-face interviews were used, as data collection methods. The participants were sampled from three different service offices under King Cetshwayo District. The research findings revealed that most participants in the Department of Social Development at King Cetshwayo District have unpleasant experiences on how supervision was being implemented. Participants stated factors such as, amongst others, insufficient time, high workloads, and disorganized working environment as negatively impacting the implementation of supervision in their service offices. The main conclusion drawn from the findings was that almost all service offices were unable to appropriately implement supervision in a manner that strikes a balance on different functions of supervision appropriately. The recommendations were divided into those that related to the study as a whole and those that were suggested for future studies. Key Words: Experiences, Social Worker, Supervision, Supervisor
A Semi-Parametric Analysis of Technology, with an Application to U.S. Dairy Farms
Creators: name: De Los Campos, Gustavos
name: Foltz, Jeremy D.
name: Chavas, Jean-Paul
name: Gianola, Daniel
name: De Los Campos, Gustavos
name: Foltz, Jeremy D.
name: Chavas, Jean-Paul
name: Gianola, Daniel
Publisher: name: Unknown
Year: 2010
Subjects: Productivity Analysis
Research and Development/Tech Change/Emerging Technologies
Research Methods/ Statistical Methods

description: This article proposes a semi-parametric stochastic frontier model (SPSF) in which components of the technology and of technical efficiency are represented using semi-parametric methods and estimated in a Bayesian framework. The approach is illustrated in an application to US farm data. The analysis shows important scale economies for small and medium herds and constant return to scale for larger herds. With the exception of labor, estimates of marginal products were close to the value expected under profit maximization. Finally, the results suggest important opportunities to increase productivity through reductions in technical inefficiencies.
Towards Testing Sterile Neutrino Dark Matter with Spectrum-Roentgen-Gamma Mission
Creators: name: Barinov, V. V.
name: Burenin, R. A.
name: Gorbunov, D. S.
name: Krivonos, R. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the prospects of the SRG mission in searches for the keV-scale mass sterile neutrino dark matter radiatively decaying into active neutrino and photon. The ongoing all-sky X-ray survey of the SRG space observatory with data acquired by the ART-XC and eROSITA telescopes can provide a possibility to fully explore the resonant production mechanism of the dark matter sterile neutrino, which exploits the lepton asymmetry in the primordial plasma consistent with cosmological limits from the Big Bang Nucleosynthesis. In particular, it is shown that at the end of the four year all-sky survey, the sensitivity of the eROSITA telescope near the 3.5 keV line signal reported earlier can be comparable to that of the XMM-Newton with all collected data, which will allow one to carry out another independent study of the possible sterile neutrino decay signal in this area. In the energy range below $\approx2.4$ keV, the expected constraints on the model parameters can be significantly stronger than those obtained with XMM-Newton. From the ART-XC data, in the energy range approximately from 5 to 20 keV, it can be possible to get more stringent constraints than those obtained with NuSTAR so far. We conclude that the SRG mission has a very high potential in testing the sterile neutrino dark matter hypothesis.
description: 9 pages, 7 figures; v2: refined with measured background, added new plot with expected limits for already collected data, then for 1 year and 4 years in the survey mode; v3: replaced with journal version
Additional file 1 of The microbiome of diabetic foot ulcers: a comparison of swab and tissue biopsy wound sampling techniques using 16S rRNA gene sequencing
Creators: name: J. Travis
name: M. Malone
name: H. Hu
name: A. Baten
name: K. Johani
name: F. Huygens
name: K. Vickery
name: Benkendorff, K.
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Additional file 1 Supplementary Table S1. Number of reads and copies of 16S rRNA gene/μl in swab and tissue biopsy samples. Supplementary Table S2. Spearman Rank correlations between swab and tissue biopsy samples. Supplementary Table S3. No. of distinct OTUs (Richness) pre and post rarefaction at 1500 reads.
IQTSODIY MAMLAKATLARDA BOZOR
Creators: name: Jumanazarov Zohid Shodmonovich
Publisher: name: Zenodo
Year: 2024

description: Annotatsiya: Bozor munosabatlari zamonaviy iqtisodiyotning asosiy mexanizmi hisoblanadi. Turli mamlakatlarda bozorning rivojlanish darajasi va xususiyatlari farqlanadi. Ushbu tezisda iqtisodiy rivojlangan va rivojlanayotgan mamlakatlardagi bozor munosabatlarining o'ziga xos jihatlari tahlil qilinadi.

Kalit so'zlar: bozor iqtisodiyoti, erkin raqobat, davlat boshqaruvi, xususiy mulk, narx-navo, talab va taklif.
Logic Column 10: Specifying Confidentiality
Creators: name: Pucella, Riccardo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F,4.1; D.4.6

description: This article illustrates the use of a logical specification language to capture various forms of confidentiality properties used in the security literature.
description: 12 pages
Upstream signalized crossover intersection
Creators: name: Tabernero, Vener
Publisher: name: University of British Columbia
Year: 2009

description: The impact of left turns on operation is probably the most significant factor in the performance of conventional intersections. As a result engineers have looked to alternative measures for dealing with left turns at intersections to improve performance, some of which have been unconventional schemes. The purpose of this thesis is to introduce a new unconventional intersection scheme, the Upstream Signalized Crossover (USC), which is a four-legged intersection designed to eliminate left turn opposing conflicts by crossing the left and through traffic to the left side of the road at all four approaches before the intersection. The crisscrossing of traffic upstream of the intersection results in four additional secondary signalized intersections. The operation of the USC intersection was analyzed, along with a typical conventional intersection, using the Highway Capacity Manual (HCM) 2000 methodology and simulation models that were developed using VISSIM. The HCM analysis employed the Syncro software to compute the signal timings and offsets for the multiple signals of the USC. The results from this analysis indicated that a significant reduction in average delays could be achieved by the USC intersection when directly compared to conventional intersections. The average delays computed for the USC was about 45 % to 60% less for the same traffic volumes that caused a sample conventional intersection to fail and was able to accommodate between 15% and 20% more traffic before the USC reached failure. The VISSIM simulation model revealed that the USC was not as sensitive to left turn volumes as compared to conventional intersections and has the potential for handling large left turn volumes while maintaining acceptable levels of performance for through traffic. However, when compared to a conventional intersection the analysis did not show significant improvements in left turn delays for the USC, which may indicate that progression between the primary and secondary signals for the left turn movements were not as favourable. Future analysis of the USC intersection should develop and utilize a more dynamic technique for optimizing the signals for both the through and left turn movements. The USC has 50% less crossing conflicts than a typical four-legged conventional intersection and as a result could offer a significant reduction in left turn opposing collisions. The potential for rear-end collisions could be higher for the USC given the additional signals; however, this should be mitigated by improving the coordination and progression between the signals.
Polymer dispersed liquid crystal thin films for sensing toluene
Creators: name: Zhang, Wencui
name: Fan, Donghao
name: Gong, Yanli
name: Liang, Wenlang
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Inorganic Chemistry
subject: 111714 Mental Health
subject: FOS: Health sciences

description: In this paper, we prepare a polymer-dispersed liquid crystal (PDLC) thin film on glass substrates by the solvent- and polymerisation induced phase separation of a silicone adhesive (Platsil Gel) and a nematic liquid crystal, coupled with soft lithography. We show that the PDLC thin film can be used as a facile and portable sensor platform for the detection of toluene with the detection limit of 2.66 ppm by simply observing the director configuration change of the LC droplets dispersed in the polymer thin film. The sensor platform shows a rapid response time and can be repeatedly used for the detection of toluene.
Hadronic Production of $B_c(B^*_c)$ Meson Induced by the Heavy Quarks inside the Collision Hadrons
Creators: name: Chang, Chao-Hsi
name: Qiao, Cong-Feng
name: Wang, Jian-Xiong
name: Wu, Xing-Gang
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In general-mass variable-flavor-number (GM-VFN) scheme, the `heavy quark mechanisms' of $B_c(B_c^*)$ meson hadroproduction via the sub-processes $g+c\to B_c(B_c^*)+...$ and $g+\bar{b}\to B_c(B_c^*)+...$ are investigated. In the scheme, possible double counting from these mechanisms and the `light mechanisms' (the gluon-gluon fusion and quark-antiquark annihilation mechanisms) is subtracted properly. The numerical results show that the transverse momentum, $p_t$, distribution of the produced $B_c(B_c^*)$ from the `intrinsic heavy quark mechanisms' (i.e. the heavy quark mechanisms in which the double counting components have been subtracted accordingly) declines faster with the increment of the $p_t$ than that from the `light mechanisms', and only in small $p_t$ region ($p_t\lesssim 7.0$ GeV) the `intrinsic heavy quark mechanisms' themselves may make remarkable contributions. The combined contributions from the `intrinsic heavy quark mechanisms' and the `light mechanisms' to the production are compared with that obtained by the most calculations in literature, which in some sense are within the fixed flavor number (FFN) scheme at leading order, and we find that the production by virtue of the GM-VFN scheme is more or less the same as the one in literature, except in the small $p_t$ region.
description: 17 page, 7 figures, some new calculations and comparisons have been done in the revised version
Electrical Detection of Ferroelectric-like Metals through Nonlinear Hall Effect
Creators: name: Xiao, Rui-Chun
name: Shao, Ding-Fu
name: Huang, Wenjuan
name: Jiang, Hua
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ferroelectric-like metals are a relatively rare class of materials that have ferroelectric-like distortion and metallic conductivity. LiOsO$_3$ is the first demonstrated and the most investigated ferroelectric-like metal. The presence of free carriers makes them difficult to be studied by traditional ferroelectric techniques. In this paper, using the symmetry analysis and first-principles calculations, we demonstrate that the ferroelectric-like transition of LiOsO$_3$ can be probed by a kind of electrical transport method based on nonlinear Hall effect. The Berry curvature dipole exists in the ferroelectric-like phase, and it can lead to a measurable nonlinear Hall conductance with a conventional experimental setup. However, the symmetry of the paraelectric-like phase LiOsO$_3$ vanishes the Berry curvature dipole. The Berry curvature dipole shows a strong dependence on the polar displacement, which might be helpful for the detection of polar order. The nonlinear Hall effect provides an effective method for the detection of phase transition in the study of the ferroelectric-like metals and promotes them to be applied in the ferroelectric-like electronic devices.
Synthesis and liquid crystalline studies of biphenylyl-1,3,4-thiadiazoles and diphenyl-1,3,4-thiadiazoles: influence of side chain semifluorination and lateral ring fluorination
Creators: name: Fouad, Farid
name: Khairuddean, Melati
name: Twieg, Robert
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Pharmacology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Inorganic Chemistry
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Four series of 1,3,4-thiadiazole based compounds (Series I–IV) were synthesised, and their liquid crystalline properties were studied. Series I compounds are two tailed biphenylyl-1,3,4-thiadiazoles (seven new compounds). Series II is a set of new diphenyl-1,3,4-thiadiazoles with perhydrogenated and semifluorinated tails (eight new compounds). Series III compounds are symmetrical semifluorinated diphenyl-1,3,4-thiadiazoles (five new compounds). Two laterally fluorinated diphenyl-1,3,4-thiadiazoles along with their parent nonfluorinated compound were also synthesised (Series IV). In all of the four series SmA and/or SmC phases are observed.
Mean plane of the Kuiper belt beyond 50 AU in the presence of Planet 9
Creators: name: Li, Jian
name: Xia, Zhihong Jeff
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Context. A recent observational census of Kuiper belt objects (KBOs) has unveiled anomalous orbital structures. This has led to the hypothesis that an additional $\sim5-10~m_{\oplus}$ planet exists. This planet, known as Planet 9, occupies an eccentric and inclined orbit at hundreds of astronomical units. However, the KBOs under consideration have the largest known semimajor axes at $a>250$ AU; thus they are very difficult to detect.// Aims. In the context of the proposed Planet 9, we aim to measure the mean plane of the Kuiper belt at $a>50$ AU. In a comparison of the expected and observed mean planes, some constraints would be put on the mass and orbit of this undiscovered planet. Methods. We adopted and developed the theoretical approach of Volk & Malhotra (2017) to the relative angle $δ$ between the expected mean plane of the Kuiper belt and the invariable plane determined by the eight known planets. Numerical simulations were constructed to validate our theoretical approach. Then similar to Volk & Malhotra (2017), we derived the angle $δ$ for the real observed KBOs with $100100$ AU owing to the presence of Planet 9 because the relative angle $δ$ could be as large as $\sim10^{\circ}$. Using the $1σ$ upper limit of $δ<5^{\circ}$ deduced from real KBO samples as a constraint, we present the most probable parameters of Planet 9.
description: 7 pages, 9 figures, Accepted for publication on Astronomy and Astrophysics
More Axions from Strings
Creators: name: Gorghetto, Marco
name: Hardy, Edward
name: Villadoro, Giovanni
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the contribution to the QCD axion dark matter abundance that is produced by string defects during the so-called scaling regime. Clear evidence of scaling violations is found, the most conservative extrapolation of which strongly suggests a large number of axions from strings. In this regime, nonlinearities at around the QCD scale are shown to play an important role in determining the final abundance. The overall result is a lower bound on the QCD axion mass in the post-inflationary scenario that is substantially stronger than the naive one from misalignment.
description: 19 pages + appendices
Additional file 1 of Metabolic role of pyrophosphate-linked phosphofructokinase pfk for C1 assimilation in Methylotuvimicrobium alcaliphilum 20Z
Creators: name: Nguyen, Anh Duc
name: Gayoung Nam
name: Donghyuk Kim
name: Lee, Eun Yeol
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1. Additional figures and legends supporting the results described in text.
Extreme Suppression of Antiferromagnetic Order and Critical Scaling in a Two-Dimensional Random Quantum Magnet
Creators: name: Hong, Wenshan
name: Liu, Lu
name: Liu, Chang
name: Ma, Xiaoyan
name: Koda, Akihiro
name: Li, Xin
name: Song, Jianming
name: Yang, Wenyun
name: Yang, Jinbo
name: Cheng, Peng
name: Zhang, Hongxia
name: Bao, Wei
name: Ma, Xiaobai
name: Chen, Dongfeng
name: Sun, Kai
name: Guo, Wenan
name: Luo, Huiqian
name: Sandvik, Anders W.
name: Li, Shiliang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Sr$_2$CuTeO$_6$ is a square-lattice Néel antiferromagnet with superexchange between first-neighbor $S=1/2$ Cu spins mediated by plaquette centered Te ions. Substituting Te by W, the affected impurity plaquettes have predominantly second-neighbor interactions, thus causing local magnetic frustration. Here we report a study of Sr$_2$CuTe$_{1-x}$W$_x$O$_6$ using neutron diffraction and $μ$SR techniques, showing that the Néel order vanishes already at $x = 0.025 \pm 0.005$. We explain this extreme order suppression using a two-dimensional Heisenberg spin model, demonstrating that a W-type impurity induces a deformation of the order parameter that decays with distance as $1/r^2$ at temperature $T=0$. The associated logarithmic singularity leads to loss of order for any $x>0$. Order for small $x>0$ and $T>0$ is induced by weak interplane couplings. In the nonmagnetic phase of Sr$_2$CuTe$_{1-x}$W$_x$O$_6$, the $μ$SR relaxation rate exhibits quantum critical scaling with a large dynamic exponent, $z \approx 3$, consistent with a random-singlet state.
description: 6 pages + 6 pages supplemental material
Structural variants of RM734 in the design of splay nematic materials
Creators: name: Mandle, R. J.
name: Cowling, S. J.
name: Goodby, J. W.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Evolutionary Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Inorganic Chemistry

description: The recent discovery of the splay nematic phase, a new nematic polymorph that has been found to be both polar and ferroelectric, is the lead paragraph in an entirely new chapter in the history of liquid crystals. The potential for transformative applications utilising this state of matter – such as photonics, non-linear optics, memory applications and so on – can only be met with significant improvements in the temperature range of existing materials such as 4-(4-nitrophenoxycarbonyl)phenyl 4-methoxy-2-methoxybenzoate (RM734). Herein we present several families of materials which are structurally related to the archetypal new nematic material, RM734, including the first non-rod-like materials within the context of the splay nematic phase. We find that the incidence (or absence) of this new nematic variant in a designer material cannot be easily rationalised in terms of molecular dipole moment or polarisability. However, mixture formulation shows promise for the engineering of materials with improved working temperature ranges.
A fully Lagrangian DEM-MPS mesh-free model for ice-wave dynamics
Creators: name: Junior, Rubens Augusto Amaro
name: Mellado-Cusicahua, Andrea
name: Shakibaeinia, Ahmad
name: Cheng, Liang-Yee
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This paper develops and evaluates a novel 3D fully-Lagrangian (particle-based) numerical model, based on the hybrid discrete element method (DEM) and moving particle semi-implicit (MPS) mesh-free techniques, for modeling the highly-dynamic ice-wave interactions. Both MPS and DEM belong to mesh-free Lagrangian (particle) techniques. The model considers ice-wave dynamics as a multiphase continuum-discrete system. While the MPS solves the continuum equations of free-surface flow in a Lagrangian particle-based domain, the DEM uses a multi-sphere Hertzian contact dynamic model to simulate the ice floes motion and interaction. The hybrid model predicts the motion and collision of ice floes as well as their interaction with water, boundaries, and any obstacle in their way. Considering the mesh-free Lagrangian nature of both DEM and MPS, the developed model has an inherent ability to predict the free-drift (absence of internal stress) movements of the ice floes, e.g., sliding, rolling, colliding, and piling-up, in violent free-surface flow. A small-scale and challenging experiment based on dam-break flow over dry and wet beds with floating block floes, which mimics the characteristics of an idealized jam release, has been conducted to provide useful and comprehensive quality data for the validation of the proposed model, as well as other numerical models. Experimental and numerical results of the free-surface profile and the position of the blocks are compared. The results show the ability of the model to numerically reproduce and predict the complex three-dimensional dynamic behavior of wave-ice floes interaction. Overall, this study is a first effort toward developing an ice-wave dynamics within a fully Lagrangian framework, and its results can be extended to bring an in-depth understanding of the physics of the real-scale ice-wave or river ice dynamic problems in the future.
description: 53 pages, 29 figures
Half-ordered state in the anisotropic Haldane-gap antiferromagnet NDMAP
Creators: name: Zheludev, A.
name: Grenier, B.
name: Ressouche, E.
name: Regnault, L. -P.
name: Katsumata, Z. Honda K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Neutron diffraction experiments performed on the Haldane gap material NDMAP in high magnetic fields applied at an angle to the principal anisotropy axes reveal two consecutive field-induced phase transitions. The low-field phase is the gapped Haldane state, while at high fields the system exhibits 3-dimensional long-range Neel order. In a peculiar phase found at intermediate fields only half of all the spin chains participate in the long-range ordering, while the other half remains disordered and gapped.
description: 4 pages, 2 figures, submitted to Phys. Rev. B
Observational constraints on cosmic-ray escape from ultra-high energy accelerators
Creators: name: Condorelli, Antonio
name: Luce, Quentin
name: Marafico, Sullivan
name: Biteau, Jonathan
name: Deligny, Olivier
Publisher: name: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Year: 2023

description: The energy spectrum and mass composition of ultra-high energy cosmic rays inferred at the Pierre Auger Observatory are used to derive a benchmark scenario for the emission mechanisms at play in extragalactic accelerators as well as for their energetics and for the abundances of elements in their environments. Assuming a distribution of sources following the density of stellar mass, the gradual increase of the cosmic ray mass number observed on Earth from ≃2 EeV up to the highest energies is shown to call for nuclei accelerated up to an energy proportional to their electric charge and emitted with a hard spectral index. In addition, the inferred flux of protons down to ≃0.6 EeV is shown to require for this population a spectral index significantly softer than that of heavier nuclei. This is consistent with in-source interactions that shape the energy production rate of injected charged nuclei differently from that of the secondary neutrons escaping from the confinement zone. Together with the inferred abundances of nuclei, these results provide constraints on the radiation levels in the source environments. Within this scenario, an additional component that falls off steeply with increasing energy up to the ankle feature is necessary to make up the all-particle flux in the sub-ankle energy range.
QCD Odderon: non linear evolution in the leading twist
Creators: name: Contreras, Carlos
name: Levin, Eugene
name: Meneses, Rodrigo
name: Sanhueza, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the paper we propose and solve analytically the non-linear evolution equation in the leading twist approximation for the Odderon contribution. We found three qualitative features of this solution, which differs the Odderon contribution from the Pomeron one :(i) the behaviour in the vicinity of the saturation scale cannot be derived from the linear evolution in a dramatic difference with the Pomeron case; (ii) a substantial decrease of the Odderon contribution with the energy; and (iii) the lack of geometric scaling behaviour. The two last features have been seen in numerical attempts to solve the Odderon equation.
description: 11pp,7 figures in pdf files
Additional file 2 of Sex differences in the first impressions made by girls and boys with autism
Creators: name: Cola, Meredith L.
name: Plate, Samantha
name: Yankowitz, Lisa
name: Petrulla, Victoria
name: Bateman, Leila
name: Zampella, Casey J.
name: Marchena, Ashley De
name: Pandey, Juhi
name: Schultz, Robert T.
name: Parish-Morris, Julia
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2. Conversation Rating Scale – Extended.
A facile synthesis of a room-temperature chiral discotic nematic liquid crystal based on pentaalkynylbenzene core
Creators: name: Yu, Huanan
name: Mehl, Georg H.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Inorganic Chemistry
subject: 60506 Virology

description: The preparation of discotic liquid crystal with a wide thermal nematic phase range remains a challenge. Here, a method to synthesise a class of discotic liquid crystal with exclusive and stable chiral nematic phase over a wide temperature range, based on pentaalkynylbenzene core, is presented and the mesogenic properties are well studied.
Structure and star formation in disk galaxies II. Optical imaging
Creators: name: Knapen, J. H.
name: Stedman, S.
name: Bramich, D. M.
name: Folkes, S. L.
name: Bradley, T. R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present optical observations of a sample of 57 spiral galaxies and describe the procedures followed to reduce the data. We have obtained images in the optical B and I broad bands, as well as in H alpha, with moderate spatial resolution and across wide enough fields to image the complete disks of the galaxies. In addition, we observed 55 of our sample galaxies in the R and eight in the V band, and imaged a subset through a dedicated narrow continuum filter for the H alpha line. We describe the data reduction procedures we developed in the course of this work to register, combine and photometrically calibrate each set of images for an individual galaxy. We describe in some detail the procedure used to subtract the continuum emission from our H alpha images. In companion papers, we describe near-infrared imaging of the galaxy sample, and present analyses of disk scale lengths, and of properties of bars, rings, and HII regions in the sample galaxies. The images described here will be made available for use by other researchers through the CDS.
description: 7 pages latex, 2 postscript figures. Accepted for Astronomy & Astrophysics. Images from this paper as well as those from Paper I (Knapen et al. 2003, MNRAS, 344, 527) will be available through the CDS
Two component integrable systems modelling shallow water waves: the constant vorticity case
Creators: name: Ivanov, Rossen I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: In this contribution we describe the role of several two-component integrable systems in the classical problem of shallow water waves. The starting point in our derivation is the Euler equation for an incompressible fluid, the equation of mass conservation, the simplest bottom and surface conditions and the constant vorticity condition. The approximate model equations are generated by introduction of suitable scalings and by truncating asymptotic expansions of the quantities to appropriate order. The so obtained equations can be related to three different integrable systems: a two component generalization of the Camassa-Holm equation, the Zakharov-Ito system and the Kaup-Boussinesq system.
 The significance of the results is the inclusion of vorticity, an important feature of water waves that has been given increasing attention during the last decade. The presented investigation shows how -- up to a certain order -- the model equations relate to the shear flow upon which the wave resides. In particular, it shows exactly how the constant vorticity affects the equations.
description: 14 pages, 1 Figure
Additional file 1 of Sex differences in the first impressions made by girls and boys with autism
Creators: name: Cola, Meredith L.
name: Plate, Samantha
name: Yankowitz, Lisa
name: Petrulla, Victoria
name: Bateman, Leila
name: Zampella, Casey J.
name: Marchena, Ashley De
name: Pandey, Juhi
name: Schultz, Robert T.
name: Parish-Morris, Julia
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: S1. Recruitment and exclusion criteria. S2. Measures. S3. Details of study administration. S4. Statistical approach.