cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the stability of parallel flow in a vertical porous layer with annular cross-section
Creators: name: Barletta, A.
name: Celli, M.
name: Rees, D. A. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The linear stability of buoyant parallel flow in a vertical porous layer with an annular cross-section is investigated. The vertical cylindrical boundaries are kept at different uniform temperatures and they are assumed to be impermeable. The emergence of linear instability by convection cells is excluded on the basis of a numerical solution of the linearised governing equations. This result extends to the annular geometry the well-known Gill's theorem regarding the impossibility of convective instability in a vertical porous plane slab whose boundaries are impermeable and isothermal with different temperatures. The extension of Gill's theorem to the annular domain is approached numerically by evaluating the growth rate of normal mode perturbations and showing that its sign is negative, which means asymptotic stability of the basic flow. A concurring argument supporting the absence of linear instability arises from the investigation of cases where the impermeability condition at the vertical boundaries is relaxed and a partial permeability is modelled through Robin boundary conditions for the pressure. With partially permeable boundaries, an instability emerges which takes the form of axisymmetric normal modes.
description: 12 pages, 5 figures
The role of repulsive interaction in molecular self-assembly on insulating surfaces
Creators: name: Vogtland, Maximilian
Publisher: name: Universität Bielefeld
Year: 2023
Subjects: subject: 540

description: As part of surface science research, the behaviour and interaction of molecules on a surface and the resulting system’s properties are investigated. The properties depend, among other things, on the structure formed by the adsorbed molecules. The molecules can self-assemble, driven by attractive and repulsive intermolecular interactions and interactions between the molecules and the surface. The research on molecular self-assembly aims to understand and control these interactions and the self-assembly process to create structures with customised properties. While attractive interactions are already part of intensive research in molecular self-assembly, this thesis focuses on the role of repulsive interactions and their quantification. For this, the model system of 3-hydroxybenzoic acid on the calcite(104) surface is investigated with atomic force microscopy in an ultrahigh vacuum at different temperatures and degrees of surface coverage. The adsorbed 3-hydroxybenzoic acid molecules self-assemble into one-dimensional islands (stripes). The islands’ spatial information is extracted from the atomic force microscopy images to get stripe-to-stripe distances and stripe lengths. The distance and length distributions are statistically evaluated and analysed with an analytical model to determine and quantify the interactions dictating the structure. The analysis with the analytical model reveals a coverage-dependent repulsive interaction. The attractive interaction is not clearly coverage-dependent. These observations can be explained by a change in the molecule-surface interaction and the related adsorption-induced dipole moment, causing and primarily impacting the repulsive interaction. The temperature-dependent analysis reveals the length distribution undergoing a complex transformation during equilibration. The shape of the distribution changes several times and reacts sensitively to temperature changes, which is why it constitutes an indicator of the equilibration process’s status. Combined with kinetic observations, the distribution’s shape indicates that the temperature window, where the system is thermodynamically equilibrated after a reasonable waiting time and without desorption, is between 290 to 310 K only. This underlines the importance of temperature and the complexity of its impact on molecular self-assembly. Overall, this work demonstrates that self-assembled structures’ size and distance distributions can be used to obtain qualitative and quantitative insights into kinetic processes and intermolecular interactions in molecular self-assembly.
Patient-Oncologist Communication Regarding Oral Chemotherapy during Routine Office Visits
Creators: name: Nguyen, Bobbie
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: PURPOSE: Although studies in other clinical areas have shown that patient-clinician communication can positively influence adherence to medications, little is known about how oncologists address medication counseling during routine office visits. We describe patient-oncologist office-based discussions of oral chemotherapy treatment.

METHODS: Transcripts of 24 patient-oncologist office visits were obtained from a national database. Patients were aged ≥ 19 years and prescribed capecitabine for colorectal cancer. We developed a structured coding worksheet using medication-counseling concepts previously identified as important to medication adherence and a grounded approach. Two coders reviewed transcripts for oncologists’ provision of medication information, assessment of patients’ adherence to medication, and the provision of self-management support for management of adverse effects. We assessed interrater reliability with Cohen κ statistics. We describe the counseling concepts present within patient-oncologist conversations and present illustrative quotes to describe how they were discussed.

RESULTS: Oncologists generally provided patients who had yet to initiate therapy comprehensive medication information; those in the midst of treatment received less information. Oncologists discussed patients’ continued use of the medication (or discontinuation) among all patients who had initiated therapy (N = 18). How the patient was taking the medication (ie, therapy implementation) was less commonly discussed. Medication adverse effects were also discussed in all encounters. Self-management strategies were commonly provided, albeit mostly in response to a presenting symptom and not preemptively. Patients’ use of concurrent medications, financial access to therapy, and assessments of logistical arrangements were discussed more sporadically.

CONCLUSION: Using audio recordings from a national sample of patient-oncologist office visits, we identified several potentially important opportunities to enhance medication counseling among patients prescribed capecitabine for the treatment of colorectal cancer.
Shifted inverse curvature flows in hyperbolic space
Creators: name: Wang, Xianfeng
name: Wei, Yong
name: Zhou, Tailong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 53E10, 53C21

description: We introduce the shifted inverse curvature flow in hyperbolic space. This is a family of hypersurfaces in hyperbolic space expanding by $F^{-p}$ with positive power $p$ for a smooth, symmetric, strictly increasing and $1$-homogeneous curvature function $f$ of the shifted principal curvatures with some concavity properties. We study the maximal existence and asymptotical behavior of the flow for horo-convex hypersurfaces. In particular, for $0
description: 41 pages, 2 figures
Inflow rate, a time-symmetric observable obeying fluctuation relations
Creators: name: Baiesi, Marco
name: Falasco, Gianmaria
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: While entropy changes are the usual subject of fluctuation theorems, we seek fluctuation relations involving time-symmetric quantities, namely observables that do not change sign if the trajectories are observed backward in time. We find detailed and integral fluctuation relations for the (time integrated) difference between "entrance rate" and escape rate in mesoscopic jump systems. Such "inflow rate", which is even under time reversal, represents the discrete-state equivalent of the phase space contraction rate. Indeed, it becomes minus the divergence of forces in the continuum limit to overdamped diffusion. This establishes a formal connection between reversible deterministic systems and irreversible stochastic ones, confirming that fluctuation theorems are largely independent of the details of the underling dynamics.
description: v3: published version, slightly shorter title and abstract
Impact of Human Resource Development Practice on Employees' Performance and Motivation in the case of EFDRE Ministry of Agriculture and Natural Resource
Creators: name: Zemzem Nuredin
Publisher: name: Zenodo
Year: 2016

description: Effectiveness of an organization depends on the quality of its human resources and human resources development strategy being an integral part of organizations’ strategic plan and its practicability. Hence, this study was aimed to determine the impact of human resource development practice on employees’ performance and motivation in the Ministry of Agriculture and Natural Resource. The research is a case study in the form of cross sectional design in which data was collected across a population through purposive sampling and simple random sampling. Data was collected on survey questionnaire and an interview. 130 questionnaires were distributed for the collection of data and an interview was made with HRD Director of the ministry. Descriptive statistic tool SPSS version 22 was applied to analyze the data. Results show that respondents perceived the HRD practices of the ministry as good impact on performance and motivation of employees in the ministry. The correlation analysis result shows that the relationship between dependent and independent variables are positively and significantly correlated. On the contrary, HRD practice of the ministry does not reduce the employee turnover of the employees in the ministry.
Summary report describing the schedules for the three measurement campaigns to determine the efficiency of nacelles and their components on test benches with a target uncertainty of 1 % including pre-tests, measuring devices, and transfer standard specifications and their installation conditions
Creators: name: Weidinger, Paula
name: Song, Zihang
name: Oliveira, Rafael Soares de
name: Yogal, Nijan
name: Dubowik, Alexander
name: Lehrmann, Christian
name: Mester, Christian
name: Heller, Marcel
name: Zhang, Hongkun
name: Zweiffel, Maximilian
name: Quintanilla Crespo, Juan Manuel
name: Carricas, Cecilio Sarobe
name: Hällström, Jari
Publisher: name: Zenodo
Year: 2022
Subjects: WindEFCY
EMPIR
Horizon2020
19ENG08
Nacelle efficiency
Electrical power measurement
Mechanical power measurement
Nacelle test bench
Generator test bench
Euramet

description: This report has been produced within the EMPIR project entitled Traceable Mechanical and Electrical Power Measurement for Efficiency Determination of Wind Turbines or 19ENG08 WindEFCY. More information about this collaborative research project can be found on the project’s website https://www.ptb.de/empir2020/windefcy/home/. This report describes the schedules for the three measurement campaigns to determine the efficiency of nacelles and their components on test benches including pre-tests, measuring devices, and transfer standard specifications and their installation conditions.
description: The project 19ENG08 – WindEFCY has received funding from the EMPIR programme co-financed by the Participating States and from the European Union's Horizon 2020 research and innovation programme.
Wavelet transforms and their applications to MHD and plasma turbulence: a review
Creators: name: Farge, Marie
name: Schneider, Kai
Publisher: name: arXiv
Year: 2015
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Computational Physics (physics.comp-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: 65T60, 76W05, 82D10, 76F65, 76F05, 76F55, 65R32, 76M28

description: Wavelet analysis and compression tools are reviewed and different applications to study MHD and plasma turbulence are presented. We introduce the continuous and the orthogonal wavelet transform and detail several statistical diagnostics based on the wavelet coefficients. We then show how to extract coherent structures out of fully developed turbulent flows using wavelet-based denoising. Finally some multiscale numerical simulation schemes using wavelets are described. Several examples for analyzing, compressing and computing one, two and three dimensional turbulent MHD or plasma flows are presented.
description: Journal of Plasma Physics, 2015
Rayleigh-Bénard instability of an Ellis fluid saturating a porous medium
Creators: name: Celli, Michele
name: Barletta, Antonio
name: Brandão, Pedro V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Unlike the power-law model, the Ellis model describes the apparent viscosity of a shear-thinning fluid with no singularity in the limit of a vanishingly small shear stress. In particular, this model matches the Newtonian behaviour when the shear stresses are very small. The emergence of the Rayleigh-Bénard instability is studied when a horizontal pressure gradient, yielding a basic throughflow, is prescribed in a horizontal porous layer. The threshold conditions for the linear instability of this system are obtained both analytically and numerically. In the case of a negligible flow rate, the onset of the instability occurs for the same parametric conditions reported in the literature for a Newtonian fluid saturating a porous medium. On the other hand, when high flow rates are considered, a negligibly small temperature difference imposed across the horizontal boundaries is sufficient to trigger the convective instability.
description: 13 pages, 5 figures, 2 tables
Survey of the inverse spectral problem for the Notices of the ICCM
Creators: name: Zelditch, Steve
Publisher: name: arXiv
Year: 2015
Subjects: subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: This is an updated survey on the inverse spectral problem written for the Notices of the ICCM. It rapidly reviews some of the material in the previous survey of the same title (arXiv:math/0402356) and then discusses some relatively new results (rigidity results for the ellipse, phase shifts in scattering theory). The last section poses a number of open problems involving "inverse results for oscillatory integrals".
Triticum aestivum cultivar:Chinese Spring Epigenomics
Creators: name: BGI
Publisher: name: CNGB
Year: 2017
Subjects: epigenomics
Monoisolate

description: Bread wheat is the most extensively cultivated wheat crop, being grown on over 95% of the wheat growing areas of the world. Covalent post-translational modifications (PTM) of histone proteins play a major role in regulation of gene expression and chromatin architecture in both animal and plants. To gain insight in the epigenetic landscape of bread wheat, we generated the global profiling of four histone marks (H3K4me3, H3K9ac, H3K27me3, H3K36me3) in the aerial part of 10-day old wheat seedlings.
Frequency and Clinical Outcomes of CYP2C19 Genotype-Guided Escalation and De-escalation of Antiplatelet Therapy in a Real-World Clinical Setting
Creators: name: Martin, Jesse
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: Purpose: To evaluate the frequency and clinical impact of switches in antiplatelet therapy following implementation of CYP2C19 genotyping after percutaneous coronary intervention (PCI).
Methods: The frequency of escalation (clopidogrel switched to prasugrel/ticagrelor) and de- escalation (prasugrel/ticagrelor switched to clopidogrel) was evaluated in 1063 PCI patients who underwent CYP2C19 genotyping. Risk of major adverse cardiovascular or cerebrovascular (MACCE) and bleeding events over one-year was evaluated.
Results: Antiplatelet therapy switches were common (19%), with escalation (101/115: 88%) and de-escalation (77/84: 92%) occurring predominantly in patients with and without a CYP2C19 nonfunctional allele, respectively. Nonfunctional allele carriers initiated and continued on clopidogrel had a significantly higher risk of experiencing either a MACCE or bleeding event compared to those escalated to prasugrel/ticagrelor (52 vs. 19 events/100 patient-years; adjusted hazard ratio [HR] 2.89 [1.44-6.13], p=0.003). Patients without a nonfunctional allele de- escalated to clopidogrel had no difference in risk compared to those initiated and continued on prasugrel/ticagrelor (21 vs. 19 events/100 patient-years; adjusted HR 1.13 [0.51- 2.34], p=0.751). Conclusions: CYP2C19-guided escalation and de-escalation is common in a real-world setting. Continuation of clopidogrel in nonfunctional allele carriers is associated with adverse outcomes. De-escalation to clopidogrel in patients without a nonfunctional allele appears safe and warrants prospective study.
Scattering of a plasmonic nanoantenna embedded in a silicon waveguide
Creators: name: Castro-Lopez, Marta
name: de Sousa, Nuno
name: Garcia-Martin, Antonio
name: Gardes, Frederic Y.
name: Sapienza, Riccardo
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Plasmonic antennas integrated on silicon devices have large and yet unexplored potential for controlling and routing light signals. Here, we present theoretical calculations of a hybrid silicon-metallic system in which a single gold nanoantenna embedded in a single-mode silicon waveguide acts as a resonance-driven filter. As a consequence of scattering and interference, when the resonance condition of the antenna is met, the transmission drops by 85% in the resonant frequency band. Firstly, we study analytically the interaction between the propagating mode and the antenna by including radiative corrections to the scattering process and the polarization of the waveguide walls. Secondly, we find the configuration of maximum interaction and numerically simulate a realistic nanoantenna in a silicon waveguide. The numerical calculations show a large suppression of transmission and three times more scattering than absorption, consequent with the analytical model. The system we propose can be easily fabricated by standard silicon and plasmonic lithographic methods, making it promising as real component in future optoelectronic circuits.
description: 10 pages, 5 figures
Chemical trends of deep levels in van der Waals semiconductors
Creators: name: Ci, Penghong
name: Tian, Xuezeng
name: Kang, Jun
name: Salazar, Anthony
name: Eriguchi, Kazutaka
name: Warkander, Sorren
name: Tang, Kechao
name: Liu, Jiaman
name: Chen, Yabin
name: Tongay, Sefaattin
name: Walukiewicz, Wladek
name: Miao, Jianwei
name: Dubon, Oscar
name: Wu, Junqiao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Properties of semiconductors are largely defined by crystal imperfections including native defects. Van der Waals (vdW) semiconductors, a newly emerged class of materials, are no exception: defects exist even in the purest materials and strongly affect their electrical, optical, magnetic, catalytic and sensing properties. However, unlike conventional semiconductors where energy levels of defects are well documented, they are experimentally unknown in even the best studied vdW semiconductors, impeding the understanding and utilization of these materials. Here, we directly evaluate deep levels and their chemical trends in the bandgap of MoS2, WS2 and their alloys by transient spectroscopic study. One of the deep levels is found to follow the conduction band minimum of each host, attributed to the native sulfur vacancy. A switchable, DX center - like deep level has also been identified, whose energy lines up instead on a fixed level across different hosts, explaining a persistent photoconductivity above 400K.
Government Support Interventions and Autonomy of Agricultural Cooperatives in Ethiopia: The Case of Selected Regions
Creators: name: Derese, Yosef
Publisher: name: Zenodo
Year: 2014

description: This study on Government Support Interventions and Autonomy of Agricultural Cooperatives tried to analyze the overall approach and focus areas of government support to agricultural cooperatives in enhancing their capacity and its implications on their autonomy. In addition, the importance, strength, and weakness of government support to agricultural cooperatives have also been explored in this thesis. The study used qualitative and quantitative approach of data collection and analysis by means of structured questionnaires to sample members and employees of primary cooperatives and union as the basic data source and structured interviews with experts in the cooperative sector. The study shows that Ethiopian cooperative support bodies at different levels of government and administration put significant effort to support agricultural cooperative development. The supports to agricultural cooperatives in different tier levels vary from regulating the cooperative sector with just laws to direct human resource and material support. These supports to agricultural cooperatives are mostly in the form of trainings, cooperative services and relatively little material support through government support bodies in federal, regional, zone and lower levels.
Observations of PSR J1357-6429 at 2.1 GHz with the Australia Telescope Compact Array
Creators: name: Kirichenko, A.
name: Shibanov, Yu.
name: Shternin, P.
name: Johnston, S.
name: Voronkov, M. A.
name: Danilenko, A.
name: Barsukov, D.
name: Lai, D.
name: Zyuzin, D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: PSR J1357$-$6429 is a young and energetic radio pulsar detected in X-rays and $γ$-rays. It powers a compact pulsar wind nebula with a jet visible in X-rays and a large scale plerion detected in X-ray and TeV ranges. Previous multiwavelength studies suggested that the pulsar has a significant proper motion of about 180 mas yr$^{-1}$ implying an extremely high transverse velocity of about 2000 km s$^{-1}$. In order to verify that, we performed radio-interferometric observations of PSR J1357$-$6429 with the the Australia Telescope Compact Array (ATCA) in the 2.1 GHz band. We detected the pulsar with a mean flux density of $212\pm5$ $μ$Jy and obtained the most accurate pulsar position, RA = 13:57:02.525(14) and Dec = $-$64:29:29.89(15). Using the new and archival ATCA data, we did not find any proper motion and estimated its 90 per cent upper limit $μ< 106$ mas yr$^{-1}$. The pulsar shows a highly polarised single pulse, as it was earlier observed at 1.4 GHz. Spectral analysis revealed a shallow spectral index $α_ν$ = $0.5 \pm 0.1$. Based on our new radio position of the pulsar, we disclaim its optical counterpart candidate reported before.
description: 9 pages, 9 figures
Rotational properties of ferromagnetic nanoparticles driven by a precessing magnetic field in a viscous fluid
Creators: name: Lyutyy, T. V.
name: Denisov, S. I.
name: Reva, V. V.
name: Bystrik, Yu. S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the deterministic and stochastic rotational dynamics of ferromagnetic nanoparticles in a precessing magnetic field. Our approach is based on the system of effective Langevin equations and on the corresponding Fokker-Planck equation. Two key characteristics of the rotational dynamics, the average angular frequency of precession of nanoparticles and their average magnetization, are of our interest. Using the Langevin and Fokker-Planck equations, we calculate both analytically and numerically these characteristics in the deterministic and stochastic cases, determine their dependence on the model parameters, and analyze in detail the role of thermal fluctuations.
description: 25 pages, 9 figures
Projected Impact of Pharmacogenomic Testing on Medications Beyond Antiplatelet Therapy in Percutaneous Coronary Intervention Patients
Creators: name: Black, Rachel
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: CYP2C19 genotyping is used to guide antiplatelet therapy after percutaneous coronary intervention (PCI). This study evaluated the potential impact of CYP2C19 and multigene pharmacogenomic (PGx) testing on medications beyond antiplatelet therapy in a real-world cohort of PCI patients that underwent CYP2C19 testing. Multiple medications with actionable PGx recommendations, notably proton pump inhibitors, antidepressants and opioids, were commonly prescribed. Approximately 50% received a CYP2C19 metabolized medication beyond clopidogrel, and 7% met criteria for a CYP2C19 genotype-guided intervention. A simulation analysis projected that 17.5 PGx-guided medication interventions per 100 PCI patients could have been made if multigene PGx results were available. This suggests that CYP2C19 and multigene PGx results could be used to optimize medication prescribing beyond antiplatelet therapy in PCI patients.
Piecewise constructions of inverses of cyclotomic mapping permutation polynomials
Creators: name: Zheng, Yanbin
name: Yu, Yuyin
name: Zhang, Yuanping
name: Pei, Dingyi
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11T06, 11T71

description: Given a permutation polynomial of a large finite field, finding its inverse is usually a hard problem. Based on a piecewise interpolation formula, we construct the inverses of cyclotomic mapping permutation polynomials of arbitrary finite fields.
Advances in Greater Amberjack Broodstock Management
Creators: name: Fakriadis, Ioannis
name: Mylonas, Constantinos C.
name: Corriero, Aldo
Publisher: name: Zenodo
Year: 2023
Subjects: greater amberjack
Seriola, broodstock
reproduction
gametogénesis

description: The greater amberjack (Seriola dumerili)(Fig.1) is a cosmopolitan species found throughout the temperate zone, has a rapid growth rate and late reproductive maturation and large body size, characteristics that make it one of the most prominent species for Mediterranean aquaculture diversification (Corriero et al., 2021; Fakriadis et al., 2020). However, until now the greater amberjack production is still low due to inconsistent and unreliable reproduction and production of juveniles for grow out. Although considerable progress has been made in studying the reproductive biology of greater amberjack and alleviating its reproductive dysfunctions in captivity, the control of its reproduction is still a challenge, as it exhibits relatively lower egg fertilization success compared to other species and lower sperm production compared to breeders in the wild. Additionally, greater amberjack broodstock appear to be very sensitive to repeated handling during gametogenesis, since both males and females abort reproductive development and maturation when handled before the spawning period. In the framework of the BestBrood project that was funded by the ERA-NET Cofund BlueBio initiative, emphasis was placed on improving male spermiation by evaluating different hormonal treatments. The gonadotropin releasing hormone agonists (GnRHa), either in liquid form or in sustained release implants, and human chorionic gonadotropin (hCG) were tested. Sperm quality was evaluated and the best hormonal treatment was applied at an industrial case scenario.
Compatibility conditions of continua using Riemann-Cartan geometry
Creators: name: Boehmer, Christian G.
name: Lee, Yongjo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The compatibility conditions for generalised continua are studied in the framework of differential geometry, in particular Riemann-Cartan geometry. We show that Vallée's compatibility condition in linear elasticity theory is equivalent to the vanishing of the three dimensional Einstein tensor. Moreover, we show that the compatibility condition satisfied by Nye's tensor also arises from the three dimensional Einstein tensor which appears to play a pivotal role in continuum mechanics not mentioned before. We discuss further compatibility conditions which can be obtained using our geometrical approach and apply it to the micro-continuum theories.
description: 19 pages; v2 extended references and minor corrections
MPEC 2023-Q134 : DAILY ORBIT UPDATE (2023 August 25)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Klimawandel unterrichten: Wissen, Einstellungen und Herausforderungen angehender Primarlehrpersonen
Creators: name: Breitenmoser, Petra
name: Keller-Schneider, Manuela
Publisher: name: Zenodo
Year: 2021
Subjects: Klimawandel
Unterricht
Primarlehrpersonen

description: Klimawandel zu unterrichten nimmt noch keinen festen Bestandteil im Unterricht der Volksschule ein, trotz gesellschaftlicher Relevanz der Thematik und des Interessens der Schüler:innen. Der Komplexität der Thematik innerhalb eines kontrovers diskutierten politischen und kulturellen Kontextes zu begegnen, nehmen (angehende) Lehrpersonen als grosse Herausforderung war. Wie Anforderungen unter Einfluss verschiedener Faktoren wahrgenommen werden, ist für die Professionalisierung von (zukünftigen) Lehrpersonen von Bedeutung. Inwiefern dies auch die Bereitschaft Klimawandel zu unterrichten zutrifft, wird im Rahmen dieser Studie untersucht. Basierend auf dem wahrnehmungsgestützten, stress- und ressourcentheoretisch fundierten Professionalisierungsansatz von Keller-Schneider (2020) wird multi-methodisch untersucht, inwiefern spezifische Komponenten der individuellen und kontextuellen Ressourcen für die Absicht angehender Primarlehrpersonen von Bedeutung sind, den Lerngegenstand Klimawandel zu unterrichten. Folgende Fragen werden untersucht: 1) Welches Vorwissen und welche Einstellungen (individuelle Ressourcen) weisen die Studierenden zu Beginn der Lehrveranstaltung auf und welche Typen lassen sich herausarbeiten? (Datengrundlage: Fragebogen, Präerhebung) 2) Welche Anforderungen werden von den Studierenden als Herausforderung wahrgenommen, inwiefern sind Kontextfaktoren und soziale Ressourcen in der Auseinandersetzung mit der Thematik von Bedeutung? (Datengrundlage: Interview). Das Poster gibt einen Einblick in das Forschungsprojekt und skizziert theoretische Grundlagen, das Design der Studie sowie die verwendeten Instrumente und die Analyseschritte.
description: +repphzhbib2021A
Crowdsourced 3D Mapping: A Combined Multi-View Geometry and Self-Supervised Learning Approach
Creators: name: Chawla, Hemang
name: Jukola, Matti
name: Brouns, Terence
name: Arani, Elahe
name: Zonooz, Bahram
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The ability to efficiently utilize crowdsourced visual data carries immense potential for the domains of large scale dynamic mapping and autonomous driving. However, state-of-the-art methods for crowdsourced 3D mapping assume prior knowledge of camera intrinsics. In this work, we propose a framework that estimates the 3D positions of semantically meaningful landmarks such as traffic signs without assuming known camera intrinsics, using only monocular color camera and GPS. We utilize multi-view geometry as well as deep learning based self-calibration, depth, and ego-motion estimation for traffic sign positioning, and show that combining their strengths is important for increasing the map coverage. To facilitate research on this task, we construct and make available a KITTI based 3D traffic sign ground truth positioning dataset. Using our proposed framework, we achieve an average single-journey relative and absolute positioning accuracy of 39cm and 1.26m respectively, on this dataset.
description: Accepted at 2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
Sensitive 21cm Observations of Neutral Hydrogen in the Local Group near M31
Creators: name: Wolfe, Spencer A.
name: Lockman, Felix J.
name: Pisano, D. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Very sensitive 21cm HI measurements have been made at several locations around the Local Group galaxy M31 using the Green Bank Telescope (GBT) at an angular resolution of 9.1', with a 5$σ$ detection level of $\rm{N_{HI} = 3.9 \times 10^{17}~cm^{-2}}$ for a 30 $\rm{km~s^{-1}}$ line. Most of the HI in a 12 square degree area almost equidistant between M31 and M33 is contained in nine discrete clouds that have a typical size of a few kpc and HI mass of $10^5$ M$_{\odot}$. Their velocities in the Local Group Standard of Rest lie between -100 and +40 $\rm{km~s^{-1}}$, comparable to the systemic velocities of M31 and M33. The clouds appear to be isolated kinematically and spatially from each other. The total HI mass of all nine clouds is $1.4 \times 10^6$ M$_{\odot}$ for an adopted distance of 800 kpc with perhaps another $0.2 \times 10^6$ M$_{\odot}$ in smaller clouds or more diffuse emission. The HI mass of each cloud is typically three orders of magnitude less than the dynamical (virial) mass needed to bind the cloud gravitationally. Although they have the size and HI mass of dwarf galaxies, the clouds are unlikely to be part of the satellite system of the Local Group as they lack stars. To the north of M31, sensitive HI measurements on a coarse grid find emission that may be associated with an extension of the M31 high-velocity cloud population to projected distances of $\sim 100$ kpc. An extension of the M31 high-velocity cloud population at a similar distance to the south, toward M33, is not observed.
description: Revised text and added figure. In total: 13 pages, 11 figures, 5 tables. Accepted for publication in ApJ
Pectobacterium atrosepticum SCRI1043 Transcriptome or Gene expression
Creators: name: BGI
Publisher: name: CNGB
Year: 2015
Subjects: transcriptome
Monoisolate

description: In the present study, identification of sRNAs in the complete genome of P. atrosepticum SCRI1043 was undertaken using in silico prediction methods as well as experimentally via strand-specific RNA-sequencing. This was done to identify sRNA candidates expressed under starvation conditions in P. atrosepticum. Additionally, differential expression analysis indicated that formation of many of these sRNAs is induced during exposure of bacteria to starvation compared to rich medium conditions, suggesting the important role of sRNAs in bacterial adaptive response and in the survival of P. atrosepticum cells during nutrient deficiency induced stress. Finally, this work provides a basis for future experimental characterization and validation of sRNAs in plant pathogens.
Large classes of permutation polynomials over $\mathbb{F}_{q^2}$
Creators: name: Zheng, Yanbin
name: Yuan, Pingzhi
name: Pei, Dingyi
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11T06, 11T71

description: Permutation polynomials (PPs) of the form $(x^{q} -x + c)^{\frac{q^2 -1}{3}+1} +x$ over $\mathbb{F}_{q^2}$ were presented by Li, Helleseth and Tang [Finite Fields Appl. 22 (2013) 16--23]. More recently, we have constructed PPs of the form $(x^{q} +bx + c)^{\frac{q^2 -1}{d}+1} -bx$ over $\mathbb{F}_{q^2}$, where $d=2, 3, 4, 6$ [Finite Fields Appl. 35 (2015) 215--230]. In this paper we concentrate our efforts on the PPs of more general form \[ f(x)=(ax^{q} +bx +c)^r ϕ((ax^{q} +bx +c)^{(q^2 -1)/d}) +ux^{q} +vx~~\text{over $\mathbb{F}_{q^2}$}, \] where $a,b,c,u,v \in \mathbb{F}_{q^2}$, $r \in \mathbb{Z}^{+}$, $ϕ(x)\in \mathbb{F}_{q^2}[x]$ and $d$ is an arbitrary positive divisor of $q^2-1$. The key step is the construction of a commutative diagram with specific properties, which is the basis of the Akbary--Ghioca--Wang (AGW) criterion. By employing the AGW criterion two times, we reduce the problem of determining whether $f(x)$ permutes $\mathbb{F}_{q^2}$ to that of verifying whether two more polynomials permute two subsets of $\mathbb{F}_{q^2}$. As a consequence, we find a series of simple conditions for $f(x)$ to be a PP of $\mathbb{F}_{q^2}$. These results unify and generalize some known classes of PPs.
Efficient biosorption of Pb(II) on Pteris vittata L. from aqueous solution using pulsed plate column technique
Creators: name: Prabhu, Smruthi
name: Srinikethan, Govindan
name: Hegde, Smitha
Publisher: name: Taylor & Francis
Year: 2019
Subjects: Biophysics
Biochemistry
Physical Sciences not elsewhere classified
Molecular Biology
Environmental Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
Astronomical and Space Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Mathematical Sciences not elsewhere classified
Cancer

description: Biosorption is an alternative method of remediation that is devoid of the limitations associated with physiochemical techniques. This paper investigates the ability of the pteridophyte, Pteris vittata L., proven to have heavy metal hyper-accumulation capacity in living forms, to adsorb Pb(II) from an aqueous system in its powdered and pelletized form. At best-operating conditions, P. vittata L. pinnae powder exhibited Pb(II) biosorption capacity of 125 mg/g. Bench-scale Pulsed Plate column studies using pelletized biosorbent demonstrated continuous Pb(II) removal efficiency of 99.93%. With no commercial value and application, untreated P. vittata is a potential resource that will contribute to biosorption technology.
Co-evolution of nuclear star clusters, massive black holes and their host galaxies
Creators: name: Antonini, Fabio
name: Barausse, Enrico
name: Silk, Joseph
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Studying how nuclear star clusters (NSCs) form and how they are related to the growth of the central massive black holes (MBHs) and their host galaxies is fundamental for our understanding of the evolution of galaxies and the processes that have shaped their central structures. We present the results of a semi-analytical galaxy formation model that follows the evolution of dark matter halos along merger trees, as well as that of the baryonic components. This model allows us to study the evolution of NSCs in a cosmological context, by taking into account the growth of NSCs due to both dynamical friction-driven migration of stellar clusters and star formation triggered by infalling gas, while also accounting for dynamical heating from (binary) MBHs. We find that in-situ star formation contributes a significant fraction (up to ~80%) of the total mass of NSCs in our model. Both NSC growth through in-situ star formation and through star cluster migration are found to generate NSC -- host galaxy scaling correlations that are shallower than the same correlations for MBHs. We explore the role of galaxy mergers on the evolution of NSCs, and show that observational data on NSC -- host galaxy scaling relations provide evidence of partial erosion of NSCs by MBH binaries in luminous galaxies. We show that this observational feature is reproduced by our models, and we make predictions about the NSC and MBH occupation fraction in galaxies. We conclude by discussing several implications for theories of NSC formation.
description: Accepted for publication in the Astrophysical Journal
Friends or Foes: Understanding Communication and Interaction Patterns of Homogeneous and Cross-Cutting Spaces in Online Activism
Creators: name: Yang, Yukun
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: The understanding of people’s communication structure is crucial to answering the ongoing debates about whether social media is a “filter bubble”. Focusing on this topic, our work investigated people’s preference for homogeneous or cross-cutting communications in an online activism setting, also the difference in language use and hyperlink use in different communications types. We used the tweets with #Silent Sam to classify communication types of user interactions. After the metric generation, significance tests, and subgraph mining, we found that people are 15 times more likely to communicate with like-minded people. However, cross-cutting communications increase simultaneously with homogeneous ones when the activity level rises. Also, homogeneous communications significantly use more words related to perception, while cross-cutting ones have more words about cognition. We also unveiled the dark side of the crosscutting communications as they are generally more toxic and aggressive. The use of outside links in the tweets is rare for both cross-cutting and homogeneous communications. Nonetheless, the cross-cutting tweets embed more URLs while they direct to less diverse domains than the homogeneous ones. Left-leaning media sources with mixed to high factuality are linked as the outside source for mostly homogeneous interactions. Our work made contributions in the ways of providing the new methodology of subgraph mining to research about partisan sharing and rendering new insights to the research in online activism.
Spin Seebeck Power Conversion
Creators: name: Cahaya, Adam B.
name: Tretiakov, Oleg A.
name: Bauer, G. E. W.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spin caloritronics is the science and technology to control spin, charge, and heat currents in magnetic nanostructures. The spin degree of freedom provides new strategies for thermolelectric power generation that have not yet been fully explored. After an elementary introduction into conventional thermoelectrics and spintronics, we give a brief review of the physics of spin caloritronics. We discuss spin-dependent thermoelectrics based on the the two-current model in metallic magnets as well as the spin Seebeck and Peltier effects that are based on spin wave excitations in ferromagnets. We derive expressions for the efficiency and figure of merit ZT of several spin caloritronic devices.
description: 14 pages, 14+ figures
Portfolio Optimization on Multivariate Regime Switching GARCH Model with Normal Tempered Stable Innovation
Creators: name: Peng, Cheng
name: Kim, Young Shin
name: Mittnik, Stefan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Risk Management (q-fin.RM)
subject: Mathematical Finance (q-fin.MF)
subject: Portfolio Management (q-fin.PM)
subject: FOS: Economics and business

description: This paper uses simulation-based portfolio optimization to mitigate the left tail risk of the portfolio. The contribution is twofold. (i) We propose the Markov regime-switching GARCH model with multivariate normal tempered stable innovation (MRS-MNTS-GARCH) to accommodate fat tails, volatility clustering and regime switch. The volatility of each asset independently follows the regime-switch GARCH model, while the correlation of joint innovation of the GARCH models follows the Hidden Markov Model. (ii) We use tail risk measures, namely conditional value-at-risk (CVaR) and conditional drawdown-at-risk (CDaR), in the portfolio optimization. The optimization is performed with the sample paths simulated by the MRS-MNTS-GARCH model. We conduct an empirical study on the performance of optimal portfolios. Out-of-sample tests show that the optimal portfolios with tail measures outperform the optimal portfolio with standard deviation measure and the equally weighted portfolio in various performance measures. The out-of-sample performance of the optimal portfolios is also more robust to suboptimality on the efficient frontier.
Modeling and optimization of process parameters in elucidating the adsorption mechanism of Gallic acid on activated carbon prepared from date stones
Creators: name: Mammar, Abdelmadjid Chedri
name: Mouni, Lotfi
name: Bollinger, Jean-Claude
name: Belkhiri, Lazhar
name: Bouzaza, Abdelkrim
name: Assadi, Aymene Amine
name: Belkacemi, Hayet
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Plant Biology
subject: FOS: Biological sciences
subject: Computational Biology

description: We make use of chemical activation with phosphoric acid to prepare an activated carbon from date stones (DSAC). After characterization for surface area and pore volume, it was tested as an adsorbent for gallic acid (GA) removal from aqueous solutions: Operating variables including contact time (410 min), adsorbent dosage (0.1 g in 150 mL), GA concentration (10 mg/L) and solution pH (4.5) were optimized using the Box-Behnken design (BBD) under response surface methodology (RSM) approach. Adsorption of GA onto DSAC may be described by the pseudo-second-order kinetics model equation suggesting that the process is chemisorption. The equilibrium data fitted the Langmuir isotherm model with a maximum capacity of 156 mg/g (25°C, pH 4.5). The GA adsorption process was found to be exothermic, while ΔG° was negative implying that the reaction is spontaneous.
THE ARTISTIC CREATION AND LIFE OF ALEXANDER FEINBERG
Creators: name: Shukhratova, Shahina
Publisher: name: Zenodo
Year: 2024

description: The article describes the life journey of Alexander Fainberg, an outstanding poet, highlighting the challenges and joyful moments from his birth until his passing. Special attention is given to his attachment to Uzbekistan, the Uzbek people, and the poets and writers of this country. Despite the obstacles and hardships in his life, Fainberg's passion for literature never waned, and through his talent, he became a renowned and recognized figure.
From Indisputable Reality to Conscious Contention: Moving Beyond Modernist Conceptions of Evidence to a New Post-Postmodern Conception of Archival Evidence
Creators: name: Wiker, Julia
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: This paper examines how modernist, Positivist ideas of objective, inherent, essential evidence, although challenged by postmodernism, have remained persistent in the archival field as well as in three humanities disciplines. It traces the emergence of the modernist archival concept of evidence codified by Jenkinson and Schellenberg, investigating how it was changed by the popularity of postmodernist theory and affirmed by the resurgence of evidence with the second generation of electronic recordkeeping, and how it incorporated new, diverse perspectives in the 2010s following the decline of these two strains of thought. The incomplete transition from modernist ideas of evidence is reflected in the author’s examination of three other humanities disciplines: literary criticism, queer theory, and fan studies. The author then defines the modernist conception of evidence, using concepts popular in information science to explain its persistence despite the advent of postmodernism, and sets forth a new post-postmodernist conception incorporating insights from the three other disciplines examined in the paper.