cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spectral irradiance variations: Comparison between observations and the SATIRE model on solar rotation time scales
Creators: name: Unruh, Yvonne C.
name: Krivova, Natalie A.
name: Solanki, Sami K.
name: Harder, Jerald W.
name: Kopp, Greg
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims: We test the reliability of the observed and calculated spectral irradiance variations between 200 and 1600 nm over a time span of three solar rotations in 2004. Methods: We compare our model calculations to spectral irradiance observations taken with SORCE/SIM, SoHO/VIRGO and UARS/SUSIM. The calculations assume LTE and are based on the SATIRE (Spectral And Total Irradiance REconstruction) model. We analyse the variability as a function of wavelength and present time series in a number of selected wavelength regions covering the UV to the NIR. We also show the facular and spot contributions to the total calculated variability. Results: In most wavelength regions, the variability agrees well between all sets of observations and the model calculations. The model does particularly well between 400 and 1300 nm, but fails below 220 nm as well as for some of the strong NUV lines. Our calculations clearly show the shift from faculae-dominated variability in the NUV to spot-dominated variability above approximately 400 nm. We also discuss some of the remaining problems, such as the low sensitivity of SUSIM and SORCE for wavelengths between approximately 310 and 350 nm, where currently the model calculations still provide the best estimates of solar variability.
description: 15 pages, 11 figures, accepted by A&A
Workshop day 1: Discussion of traditional money
Creators: name: Parker, Verdena
name: Ammon, Danny
name: Begay, Kayla
name: Escamilla, Ramón
name: George-Moore, Melodie
name: Newbold, Lindsey
name: Lincoln, Perry
name: Parker, Otis
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-250311-17; video files VP-250311-17-1 through VP-250311-17-4: Discussion of traditional money, in Hupa. Video files VP-250311-17-1/2 and VP-250311-17-3/4 were recorded on separate devices, with VP-250311-17-2 and VP-250311-17-3 corresponding to the audio file. VP-250311-17-1 and VP-250311-17-4 are footage of traditional money recorded before and after Verdena's description, respectively. Recorded at the Hoopa Valley Tribal Museum as part of a language workshop. The participants identified here were present at most sessions during the workshop; additional people were also present, some of whom participate in the conversation.
An analysis of deep neural networks for predicting trends in time series data
Creators: name: Kouassi, Kouame Hermann
name: Moodley, Deshendran
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Recently, a hybrid Deep Neural Network (DNN) algorithm, TreNet was proposed for predicting trends in time series data. While TreNet was shown to have superior performance for trend prediction to other DNN and traditional ML approaches, the validation method used did not take into account the sequential nature of time series data sets and did not deal with model update. In this research we replicated the TreNet experiments on the same data sets using a walk-forward validation method and tested our optimal model over multiple independent runs to evaluate model stability. We compared the performance of the hybrid TreNet algorithm, on four data sets to vanilla DNN algorithms that take in point data, and also to traditional ML algorithms. We found that in general TreNet still performs better than the vanilla DNN models, but not on all data sets as reported in the original TreNet study. This study highlights the importance of using an appropriate validation method and evaluating model stability for evaluating and developing machine learning models for trend prediction in time series data.
Polymer electrolytes in strong external electric fields: Modification of structure and dynamics
Creators: name: Wettstein, Alina
name: Diddens, Diddo
name: Heuer, Andreas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present the results from an extensive atomistic molecular dynamics simulation study of poly(ethylene oxide) (PEO) doped with various amounts of lithium-bis(trifluoromethane)sulfonimide (LiTFSI) salt under the influence of external electric field strengths up to $1\,$V/nm. The motivation stems from recent experimental reports on the nonlinear response of mobilities to the application of an electric field in such electrolyte systems and arising speculations on field-induced alignment of the polymer chains, creating channel-like structures that facilitate ion passage. Hence, we systematically examine the electric field impact on the lithium coordination environment, polymer structure as well as ionic transport properties and further present a procedure to quantify the susceptibility of both structural and dynamical observables to the external field. Our investigation reveals indeed a coiled-to-stretched transformation of the PEO strands along with a concurrent nonlinear behavior of the dynamic properties. However, from studying the temporal response of the unperturbed electrolyte system to field application we are able to exclude a structurally conditioned enhancement of ion transport and surprisingly observe a slowing down. A microscopic understanding is supplied.
description: Main manuscript comprises 30 pages and 13 figures, supplementary information section comprises 30 pages and 28 figures
4-d Chern-Simons Theory: Higher Gauge Symmetry and Holographic Aspects
Creators: name: Zucchini, Roberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 57R56 81Q70 81T20

description: We present and study a 4d Chern-Simons (CS) model whose gauge symmetry is encoded in a balanced Lie group crossed module. Using the derived formal set-up recently found, the model can be formulated in a way that in many respects closely parallels that of the familiar 3d CS one. In spite of these formal resemblance, the gauge invariance properties of the 4d CS model differ considerably. The 4d CS action is fully gauge invariant if the underlying base 4fold has no boundary. When it does, the action is gauge variant, the gauge variation being a boundary term. If certain boundary conditions are imposed on the gauge fields and gauge transformations, level quantization can then occur. In the canonical formulation of the theory, it is found that, depending again on boundary conditions, the 4d CS model is characterized by surface charges obeying a non trivial Poisson bracket algebra. This is a higher counterpart of the familiar WZNW current algebra arising in the 3d model. 4d CS theory thus exhibits rich holographic properties. The covariant Schroedinger quantization of the 4d CS model is performed. A preliminary analysis of 4d CS edge field theory is also provided. The toric and Abelian projected models are described in some detail.
description: 123 pages, no figures. Comments are welcome
ADHERENCE TO DIET IN CHILDREN AND YOUTH WITH TYPE 1 DIABETES MELLITUS
Creators: name: Ferentinou, Eftychia
name: Koutelekos, Ioannis
name: Zartaloudi, Afroditi
name: Pappa, Despoina
name: Georgousopoulou, Vasiliki
name: Dafogianni, Chrysoula
Publisher: name: Zenodo
Year: 2023
Subjects: adherence to diet; children; diabetes type 1

description: Background: This article reviewed current findings on dietary adherence in children and youth with type 1 diabetes mellitus (T1DM). Purpose: The main objective of this study was to implement a systematic review methodology in order to contribute to the literature on the dietary adherence to the patients with T1DM. Methods: We performed a systematic literature review among articles are published between January 2006 and June 2022 using electronic databases (PubMed and Google Scholar) for all available publications in English. Results: The included studies involved children and youth with T1DM, presented dietary adherence data specifically, and described usual dietary patterns in youth. Articles are focus exclusively on dietary adherence. The final sample was 27 articles of last 16 years. Studies examining macronutrients and dietary recommendations revealed higher than recommended intakes of fat and saturated fat and lower than recommended intakes of fruits, vegetables, and whole grains. The available literature identified many children and youth with T1DM have poor adherence and not meeting dietary guidelines for their disease.  Discussion: Regarding the diet of children with T1DM, it seemed that it is usually no different from that of their healthy peers. A review of the literature also shows the great interest that exists regarding the factors that can act as inhibitors of compliance. Many youths with T1DM did not adhere to daily recommendations for the intake of fruits, vegetables, and whole grain foods. Last but not least it is found that nutrition education targeting children with T1DM should continue to reinforce healthful dietary patterns while ensuring success with carbohydrate estimation to optimize metabolic control. Conclusion: Future research should examine diet in youth exclusively on intensive insulin regimens, community-based predictors of diet, and the influence of mood on dietary adherence.
From RHIC to LHC: A relativistic diffusion approach
Creators: name: Kuiper, Rolf
name: Wolschin, Georg
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the energy dependence of stopping and hadron production in high-energy heavy-ion collisions based on a three-sources Relativistic Diffusion Model. The transport coefficients are extrapolated from Au + Au and Cu + Cu at RHIC energies (sqrt{s_NN)=19.6 - 200 GeV) to Pb + Pb at LHC energies sqrt{s_NN)= 5.52 TeV. Rapidity distributions for net protons, and pseudorapidity spectra for produced charged particles in central collisions are compared to data at RHIC energies, and discussed for several extrapolations to LHC energies.
description: 17 pages, 8 figures
Die Rolle der religiösen Ethik im spirituellen Leben der Chinesen
Creators: name: Zhuo, Xinping
name: Xinping, Zhou
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 56 Nr. 4 (2007): Ökumenische Rundschau, Band 56, Heft 4
A Model-Driven Architecture Approach for Developing Healthcare ERP: Case study in Morocco
Creators: name: Yamani, Fatima Zahra
name: Merouani, Mohamed El
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Nowadays, there are many problems in the Enterprise Resource Planning (ERP) implemented in the majority of hospitals in Morocco such as the difficulty of adaptation by the different users, the lack of several functionalities, errors that block the daily work, etc. All these problems require frequent modifications in the code, which implies a high effort to develop healthcare ERP as one of complex systems. In this paper, we are going to present a model-driven approach for developing healthcare ERP based on class diagram. First, we constitute the independent model using UML, define the transformation rules then apply them on our source model class to generate at the end an XML file that will be necessary for the ERP code. Our approach will not only resolve the above problems, but also improve the efficiency of software development through the automatically generated code.
Environmental Quality, Economic Growth, and Health Expenditure: Empirical Evidence from a Panel of African Countries
Creators: name: Ibukun, Cleopatra Oluseye
name: Osinubi, Tolulope Temilola
name: Ibukun, Cleopatra Oluseye
name: Osinubi, Tolulope Temilola
Publisher: name: Unknown
Year: 2020
Subjects: subject: Consumer/Household Economics
subject: Resource /Energy Economics and Policy
subject: Environmental quality
subject: Economic Growth
subject: Health expenditure
subject: Africa
subject: Panel Analysis

description: This study investigates the relationship among environmental quality, economic growth and health expenditure in 47 African countries using both static (pooled OLS and fixed/random effect) and dynamic (system GMM) estimation methods. Data covering the period 2000 to 2018 are employed and three proxies (carbon dioxide, nitrous oxide and methane emission) are used to capture the effect of environmental quality. The findings of the study indicate evidence of a positive and significant effect of economic growth on health expenditure, while also revealing a positively significant relationship between poor environmental quality and health expenditure. The empirical findings of this study suggest that of the three proxies of environmental quality carbon dioxide emission had the highest effect on healthcare expenditure while economic growth significantly increased health expenditure across the five African regions (North Africa, East Africa, Central Africa, West Africa and Southern Africa). The study concludes that health is a necessity good and a deterioration of the environmental quality increases health expenditure. Hence, there is a need to uphold the SDG clean energy policies that target the reduction of environmental pollution while striving for an inclusive and sustainable economic growth
Characterization of the thioredoxin system genes of Mycobacterium smegmatis
Creators: name: Asano, Rumi Lynn
Publisher: name: University of British Columbia
Year: 2009

description: The thioredoxin system is composed of thioredoxin (TrxA), thioredoxin reductase (TrxB) and NADPH. Degenerate oligonucleotide primers were designed to detect, by polymerase chain reaction (PCR), trxA and trxB genes in M.smegmatis mc²6. The complete nucleotide sequence of the Mycobacterium smegmatis thioredoxin system genes were obtained and were found to be organized similarly to the trxA and trxB gene cluster of Streptomyces clavuligerus, M.tuberculosis and M.leprae. A 14 kDa protein in M.smegmatis lysates was identified by Western blot analysis using antiserum to E.coli TrxA. Analysis of the M.smegmatis trxA and trxB gene sequences by BLAST revealed a high identity with other thioredoxin system genes. Sequence alignment with the M.tuberculosis and M.leprae genes showed that the M.smegmatis trxA and trxB deduced amino acid sequences have a very high degree of similarity; 72.7% identity and 81.5% similarity to the 49 kDa fusion protein of M.leprae, and 76.6% identity and 85.4% similarity to M.tuberculosis, respectively. Sequence alignments and phylogenetic tree analysis of known TrxA's and TrxB's clearly identify the two genes of M.smegmatis as members of the thioredoxin system genes grouped with other Actinomycetes and more specifically, within a mycobacterial branch.
Vorticella convallaria 2 Linnaeus 1758
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Oligohymenophorea
Peritrichida
Vorticellidae
Vorticella
Vorticella convallaria

description: Vorticella convallaria 2 Linnaeus, 1758
Distribution. JAMAICA: (Dunthorn et al. 2012).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 31, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
Euclidean formulation of relativistic quantum mechanics of N particles
Creators: name: Samad, Gohin Shaikh
name: Polyzou, W. N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A Euclidean formulation of relativistic quantum mechanics for systems of a finite number of degrees of freedom is discussed. Relativistic treatments of quantum theory are needed to study hadronic systems at sub-hadronic distance scales. While direct interaction approaches to relativistic quantum mechanics have proved to be useful, they have two disadvantages. One is that cluster properties are difficult to realize for systems of more than two particles. The second is that the relation to quantum field theories is indirect. Euclidean formulations of relativistic quantum mechanics provide an alternative representation that does not have these difficulties. More surprising, the theory can be formulated entirely in the Euclidean representation without the need for analytic continuation. In this work a Euclidean representation of a relativistic $N$-particle system is discussed. Kernels for systems of N free particles of any spin are given and shown to be reflection positive. Explicit formulas for generators of the Poincaré group for any spin are constructed and shown to be self-adjoint on the Euclidean representation of the Hilbert space. The structure of correlations that preserve both the Euclidean covariance and reflection positivity is discussed.
description: 29 pages. arXiv admin note: substantial text overlap with arXiv:1906.10083
Ni+ reactions with aminoacetonitrile, a potential prebiological precursor of glycine
Creators: name: Lamsabhi, Al Mokhtar
name: Mó, Otilia
name: Yáñez, Manuel
name: Guillemin, Jean-Claude
name: Haldys, Violette
name: Tortajada, Jeanine
name: Salpin, Jean-Yves
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The gas-phase reactions between Ni+ (2D5/2) and aminoacetonitrile, a molecule of prebiological interest as possible precursor of glycine, have been investigated by means of mass spectrometry techniques. The mass-analyzed ion kinetic energy (MIKE) spectrum reveals that the adduct ions [NCCH2NH2, Ni+] spontaneously decompose by loosing HCN, H2, and H2CNH, the loss of hydrogen cyanide being clearly dominant. The structures and bonding characteristics of the aminoacetonitrile-Ni+ complexes as well as the different stationary points of the corresponding potential energy surface (PES) have been theoretically studied by density functional theory (DFT) calculations carried out at B3LYP/6-311G(d,p) level. A cyclic intermediate, in which Ni+ is bisligated to the cyano and the amino group, plays an important role in the unimolecular reactivity of these ions, because it is the precursor for the observed losses of HCN and H2CNH. In all mechanisms associated with the loss of H2, the metal acts as hydrogen carrier favoring the formation of the H2 molecule. The estimated bond dissociation energy of aminoacetonitrile-Ni+ complexes (291 kJ mol-1) is larger than those measured for other nitrogen bases such as pyridine or pyrimidine and only slightly smaller than that of adenine.
Workshop day 1: Discussion of basketry
Creators: name: Parker, Verdena
name: Ammon, Danny
name: Begay, Kayla
name: Escamilla, Ramón
name: George-Moore, Melodie
name: Newbold, Lindsey
name: Lincoln, Perry
name: Parker, Otis
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-250311-16; video files VP-250311-16-1 through VP-250311-16-5: Discussion of baskets and materials used for basketry (Oregon grape, bear grass, alder, spruce root), in English with some Hupa vocabulary interspersed. Video files VP-250311-16-1 and VP-250311-16-2/3/4 were recorded more or less simultaneously on separate devices, with VP-250311-16-2/3/4 corresponding to only a portion of audio file VP-250311-16. Video file VP-250311-16-5 is footage of red obsidian and does not have a separate audio file. Recorded at the Hoopa Valley Tribal Museum as part of a language workshop. The participants identified here were present at most sessions during the workshop; additional people were also present, some of whom participate in the conversation.
The mass hierarchy with atmospheric neutrinos at INO
Creators: name: Samanta, Abhijit
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the neutrino mass hierarchy at the magnetized Iron CALorimeter (ICAL) detector at India-based Neutrino Observatory with atmospheric neutrino events generated by the Monte Carlo event generator Nuance. We judicially choose the observables so that the possible systematic uncertainties can be reduced. The resolution as a function of both energy and zenith angle simultaneously is obtained for neutrinos and anti-neutrinos separately from thousand years un-oscillated atmospheric neutrino events at ICAL to migrate number of events from neutrino energy and zenith angle bins to muon energy and zenith angle bins. The resonance ranges in terms of directly measurable quantities like muon energy and zenith angle are found using this resolution function at different input values of $θ_{13}$. Then, the marginalized $χ^2$s are studied for different input values of $θ_{13}$ with its resonance ranges taking input data in muon energy and zenith angle bins. Finally, we find that the mass hierarchy can be explored up to a lower value of $θ_{13}\approx 5^\circ$ with confidence level $>$ 95% in this set up.
description: some clarifications added, version accepted in PLB, 12 pages, 34 figures
iFishIENCi Training Tutorials and Academic Curricula
Creators: name: Kobolák, Julianna
name: Dankel, Dorothy
name: Nilsen, T
name: O'Brien, Dannie
Publisher: name: Zenodo
Year: 2023
Subjects: Training
Aquaculture
Curricula
education

description: There is a need for new developments and technological advancements to be incorporated into training materials for the next generation of aquaculture professionals, especially in the academic curricula of higher educational institutions. This requires the understanding and appropriate knowledge of existing training systems and needs from the side of the aquaculture industry. Task 6.6 of WP6 aims to understand the needs of the European aquaculture industry and develop training materials that could provide relevant knowledge regarding new technological developments in aquaculture to existing and new professionals.
A Multi-Epoch VLBI Survey of the Kinematics of CJF Sources; Part I: Model-Fit Parameters and Maps
Creators: name: Britzen, S.
name: Vermeulen, R. C.
name: Taylor, G. B.
name: Campbell, R. M.
name: Pearson, T. J.
name: Readhead, A. C. S.
name: Xu, W.
name: Browne, I. W. A.
name: Henstock, D. R.
name: Wilkinson\, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context: This is the first of a series of papers presenting VLBI observations of the 293 Caltech-Jodrell Bank Flat-Spectrum (hereafter CJF) sources and their analysis. Aims: One of the major goals of the CJF is to make a statistical study of the apparent velocities of the sources. Methods: We have conducted global VLBI and VLBA observations at 5 GHz since 1990, accumulating thirteen separate observing campaigns. Results: We present here an overview of the observations, give details of the data reduction and present the source parameters resulting from a model-fitting procedure. For every source at every observing epoch, an image is shown, built up by restoring the model-fitted components, convolved with the clean beam, into the residual image, which was made by Fourier transforming the visibility data after first subtracting the model-fitted components in the uv-plane. Overplotted we show symbols to represent the model components. Conclusions: We have produced VLBI images of all but 5 of the 293 sources in the complete CJF sample at several epochs and investigated the kinematics of 266 AGN.
description: Figure 1 and Table 2 are only available in electronic form at the CDS and soon at http://www.mpifr-bonn.mpg.de/staff/sbritzen/cjf.html
Placing High-Redshift Quasars in Perspective: a Catalog of Spectroscopic Properties from the Gemini Near Infrared Spectrograph -- Distant Quasar Survey
Creators: name: Matthews, Brandon M.
name: Shemmer, Ohad
name: Dix, Cooper
name: Brotherton, Michael S.
name: Myers, Adam D.
name: Andruchow, I.
name: Brandt, W. N.
name: Ferrero, Gabriel A.
name: Gallagher, S. C.
name: Green, Richard
name: Lira, Paulina
name: Plotkin, Richard M.
name: Richards, Gordon T.
name: Runnoe, Jessie C.
name: Schneider, Donald P.
name: Shen, Yue
name: Strauss, Michael A.
name: Wills, Beverley J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present spectroscopic measurements for 226 sources from the Gemini Near Infrared Spectrograph - Distant Quasar Survey (GNIRS-DQS). Being the largest uniform, homogeneous survey of its kind, it represents a flux-limited sample ($m_{i}$ ${\lesssim}$ 19.0 mag, $H$ ${\lesssim}$ 16.5 mag) of Sloan Digital Sky Survey (SDSS) quasars at 1.5 ${\lesssim}$ $z$ ${\lesssim}$ 3.5 with a monochromatic luminosity ($λL_λ$) at 5100 ${\unicode{xC5}}$ in the range of $10^{44} - 10^{46}$ erg $\rm{s}^{-1}$. A combination of the GNIRS and SDSS spectra covers principal quasar diagnostic features, chiefly the C IV $λ$1549, Mg II $λλ$2798, 2803, H$β$ $λ$4861, and [O III] $λλ$4959, 5007 emission lines, in each source. The spectral inventory will be utilized primarily to develop prescriptions for obtaining more accurate and precise redshifts, black hole masses, and accretion rates for all quasars. Additionally, the measurements will facilitate an understanding of the dependence of rest-frame ultraviolet-optical spectral properties of quasars on redshift, luminosity, and Eddington ratio, and test whether the physical properties of the quasar central engine evolve over cosmic time.
description: 20 pages, 7 figures, accepted for publication in ApJS; catalog data can be obtained at http://physics.uwyo.edu/agn/GNIRS-DQS/spectra.html
Revisiting the soft X-ray excess emission in clusters of galaxies observed with XMM-Newton
Creators: name: Nevalainen, J.
name: Bonamente, M.
name: Kaastra, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyze four XMM-Newton galaxy clusters in order to test whether their soft X-ray excess emission in the 0.2-0.5 keV band as reported by Kaastra et al. (2003) maintains after the application of the current knowledge of the XMM-Newton background and calibration. We show that in the bright central 500 kpc regions the details of the background modeling are insignificant. Thus, the cluster soft excess is not a background artifact, contrary to recent claims by Bregman et al. (2006). We find evidence that the change in PN calibration between years 2002 and 2005 results in significant decrease of the soft excess signal. However, the MOS instruments measure significant amounts of soft excess, or sub-Galactic NH. These differences are compatible with the current level of uncertainty in the calibration of both instruments.
description: ApJ in press, minor stylistic changes
SYNTHESIS, CHARACTERIZATION AND MICROBIAL STUDY OF Cu(II), Ni(II), Co(II) AND Zn(II) COMPLEXESES WITH 2-HYDROXY-4,5-DIIODO-BENZYLIDENE-4-CHLORO-ANILINE LIGAND
Creators: name: Dinkar P. Kotwal
Publisher: name: Zenodo
Year: 2024

description: Schiff base ligand 2-Hydroxy-4,5-diiodo-benzylidene-4-chloro-aniline (L) and its complexes with Cu (II), Ni (II), Co (II) and Zn (II) were prepared and characterized by analytical, spectroscopic (IR, UV-Vis) techniques, electrical conductivity and magnetic measurements. The results indicate that the ligand coordinate through azomithine nitrogen and oxygen of enolic group to the metal ions. The complexes were further screened for microbial activity.
Spin glass behavior in an interacting gamma-Fe2O3 nanoparticle system
Creators: name: Parker, D.
name: Dupuis, V.
name: Ladieu, F.
name: Bouchaud, J. -P.
name: Dubois, E.
name: Perzynski, R.
name: Vincent, Eric
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: In this paper we investigate the superspin glass behavior of a concentrated assembly of interacting maghemite nanoparticles and compare it to that of canonical atomic spin glass systems. ac versus temperature and frequency measurements show evidence of a superspin glass transition taking place at low temperature. In order to fully characterize the superspin glass phase, the aging behavior of both the thermo-remanent magnetization (TRM) and ac susceptibility has been investigated. It is shown that the scaling laws obeyed by superspin glasses and atomic spin glasses are essentially the same, after subtraction of a superparamagnetic contribution from the superspin glass response functions. Finally, we discuss a possible origin of this superparamagnetic contribution in terms of dilute spin glass models.
Transport coefficients in Chiral Perturbation Theory
Creators: name: Fernandez-Fraile, D.
name: Nicola, A. Gomez
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present recent results on the calculation of transport coefficients for a pion gas at zero chemical potential in Chiral Perturbation Theory using Linear Response Theory. More precisely, we show the behavior of DC conductivity and shear viscosity at low temperatures. To compute transport coefficients, the standard power counting of ChPT has to be modified. The effects derived from imposing unitarity are also analyzed. As physical applications in Relativistic Heavy Ion Collisions, we show the relation of the DC conductivity to soft-photon production and phenomenological effects related to a nonzero shear viscosity. In addition, our values for the shear viscosity to entropy ratio satisfy the KSS bound.
description: 3 pages, 6 figures, EPJA style. Talk given at the QNP06 conference in Madrid, and accepted for publication in EPJA
Depth of Boolean algebras
Creators: name: Shelah, Saharon
name: Garti, Shimon
Publisher: name: arXiv
Year: 2008
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 06E05, 03G05

description: We prove a Theorem about the relationship between the Depth of the ultraproduct of Boolean algebras, divided by an ultrafilter, and the products of the depths of each component. This answers (partly) an open problem of Monk.
Quantitative prediction of the fracture toughness of amorphous carbon from atomic-scale simulations
Creators: name: Khosrownejad, S. Mostafa
name: Kermode, James R.
name: Pastewka, Lars
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Fracture is the ultimate source of failure of amorphous carbon (a-C) films, however it is challenging to measure fracture properties of a-C from nano-indentation tests and results of reported experiments are not consistent. Here, we use atomic-scale simulations to make quantitative and mechanistic predictions on fracture of a-C. Systematic large-scale K-field controlled atomic-scale simulations of crack propagation are performed for a-C samples with densities of $ρ=2.5, \, 3.0 \, \text{ and } 3.5~\text{g/cm}^{3}$ created by liquid quenches for a range of quench rates $\dot{T}_q = 10 - 1000~\text{K/ps}$. The simulations show that the crack propagates by nucleation, growth, and coalescence of voids. Distances of $ \approx 1\, \text{nm}$ between nucleated voids result in a brittle-like fracture toughness. We use a crack growth criterion proposed by Drugan, Rice \& Sham to estimate steady-state fracture toughness based on our short crack-length fracture simulations. Fracture toughness values of $2.4-6.0\,\text{MPa}\sqrt{\text{m}}$ for initiation and $3-10\,\text{MPa}\sqrt{\text{m}}$ for the steady-state crack growth are within the experimentally reported range. These findings demonstrate that atomic-scale simulations can provide quantitatively predictive results even for fracture of materials with a ductile crack propagation mechanism.
description: 9 pages, 5 figures, 3 tables, to be submitted to Physical Review Materials Journal
Pathways for change: steps ahead
Creators: name: Linková, Marcela
name: Rueda, Silvia
name: Mergaert, Lut
Publisher: name: Zenodo
Year: 2023

description: Session at UniSAFE's final conference in Namur, 22 November 2023.

This session was presented by Marcela Linková, Co-Chair of ERA Action 5 on inclusive gender equality implementation; Silvia Rueda, Advisory Member in the Cabinet of the Spanish Minister of Science and Innovation and Director of the Women and Science Unit; and Lut Mergaert, Research Director and Senior Consultant at Yellow Window. 

The session highlighted the broader perspectives on pathways to achieve a safe European Research Area, including developments under way of the ERA Action 5 on inclusive gender equality implementation, as well as a Spanish initiative taken within the Spanish Presidency of the EU to develop a certification system on victim-centred protection, and advances in ending gender-based violence in Spain. As UniSAFE has singled out challenges faced by higher education institutions and research organisations which call for further policymaking, the steps ahead for institutional change will be outlined at all levels, from EU to national and institutional policy and decision-making.

Learn more about UniSAFE's recommendations: https://unisafe-gbv.eu/outputs/recommendations/ and its toolkit for universities and research organisations: https://unisafe-toolkit.eu.
On the product of vector spaces in a commutative field extension
Creators: name: Eliahou, Shalom
name: Kervaire, Michel
name: Lecouvey, Cédric
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let $K \subset L$ be a commutative field extension. Given $K$-subspaces $A,B$ of $L$, we consider the subspace $$ spanned by the product set $AB=\{ab \mid a \in A, b \in B\}$. If $\dim_K A = r$ and $\dim_K B = s$, how small can the dimension of $$ be? In this paper we give a complete answer to this question in characteristic 0, and more generally for separable extensions. The optimal lower bound on $\dim_K < AB>$ turns out, in this case, to be provided by the numerical function $$ κ_{K,L}(r,s) = \min_{h} (\lceil r/h\rceil + \lceil s/h\rceil -1)h, $$ where $h$ runs over the set of $K$-dimensions of all finite-dimensional intermediate fields $K \subset H \subset L$. This bound is closely related to one appearing in additive number theory.
description: Submitted in November 2007
Phase Analysis on the Error Scaling of Entangled Qubits in a 53-Qubit System
Creators: name: Huang, Wei-Jia
name: Chien, Wei-Chen
name: Cho, Chien-Hung
name: Huang, Che-Chun
name: Huang, Tsung-Wei
name: Tan, Seng Ghee
name: Cao, Chenfeng
name: Zeng, Bei
name: Chang, Ching-Ray
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have studied carefully the behaviors of entangled qubits on the IBM Rochester with various connectivities and under a "noisy" environment. A phase trajectory analysis based on our measurements of the GHZ-like states is performed. Our results point to an important fact that entangled qubits are "protected" against environmental noise by a scaling property that impacts only the weighting of their amplitudes. The reproducibility of most measurements has been confirmed within a reasonably short gate operation time. But there still are a few combinations of qubits that show significant entanglement evolution in the form of transitions between quantum states. The phase trajectory of an entangled evolution, and the impact of the sudden death of GHZ-like states and the revival of newly excited states are analyzed in details. All observed trajectories of entangled qubits arise under the influences of the newly excited states in a "noisy" intermediate-scale quantum (NISQ) computer.
Workshop day 1: Discussion of ceremonial obsidians
Creators: name: Parker, Verdena
name: Ammon, Danny
name: Begay, Kayla
name: Escamilla, Ramón
name: George-Moore, Melodie
name: Newbold, Lindsey
name: Lincoln, Perry
name: Parker, Otis
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-250311-15; video files VP-250311-15-1 and VP-250311-15-2: Discussion of ceremonial obsidians, in Hupa. Video files VP-250311-15-1 and VP-250311-15-2 were recorded on separate devices more or less simultaneously. Recorded at the Hoopa Valley Tribal Museum as part of a language workshop. The participants identified here were present at most sessions during the workshop; additional people were also present, some of whom participate in the conversation.
Linear free divisors and Frobenius manifolds
Creators: name: de Gregorio, Ignacio
name: Mond, David
name: Sevenheck, Christian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 16G20, 32S40 (Primary); 14B07, 58K60 (Secondary)

description: We study linear functions on fibrations whose central fibre is a linear free divisor. We analyse the Gauss-Manin system associated to these functions, and prove the existence of a primitive and homogenous form. As a consequence, we show that the base space of the semi-universal unfolding of such a function carries a Frobenius manifold structure.
description: 37 pages
Composition and origin of L5 Trojan asteroids of Mars: Insights from spectroscopy
Creators: name: Christou, Apostolos A.
name: Borisov, Galin
name: Dell'Oro, Aldo
name: Cellino, Alberto
name: Devogéle, Maxime
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We investigate the mineralogy of L5 Martian Trojan asteroids via reflectance spectroscopy, in particular (101429) 1998 $\mbox{VF}_{31}$, the only L5 Trojan that does not belong to the Eureka family (Christou, 2013). We find that this asteroid most likely belongs to the Bus-Demeo S-complex, in agreement with Rivkin et al. (2007) and obtain good spectral matches with Sq- or S-type asteroids, the lunar surface and of Martian and lunar meteorites. Mixture fitting to spectral endmembers suggests a surface abundance of Mg-rich orthopyroxene and iron metal or, alternatively, a mixture of plagioclase and metal with a small amount of Mg-poor orthopyroxene. The metallic component may be part of the intrinsic mineral makeup of the asteroid or an indication of extreme space weathering. We discuss several origin scenarios for (101429). The asteroid could be related to iron-rich primitive achondrites (Rivkin et al.), may have originated as impact ejecta from Mars - as proposed recently for the Eureka family asteroids (Polishook et al., 2017) - or could be a relic fragment of the Moon's original solid crust. If, on the other hand, (101429) is a relatively recent addition to the Martian Trojan clouds (Christou et al., 2020), its origin is probably traced to high-inclination asteroid families in the Inner Main Belt. For the olivine-dominated Eureka family, we find that the two smaller asteroids are more spectrally similar to one another than to (5261) Eureka. Spectral profiles of all three asteroids are closely similar shortward of $\sim$0.7$μ$m but diverge at longer wavelengths. For the two smaller asteroids in particular, we find the spectra are virtually identical up to $0.8$$μ$m. We attribute spectral differences in the near-IR region to differences in either: degree of space weathering, olivine chemical composition and/or regolith grain size.
description: 22 pages, 13 figures and 7 tables
An assessment of constructed wetlands for the treatment of greenhouse wastewaters
Creators: name: Prystay, Ward A.
Publisher: name: University of British Columbia
Year: 2009

description: The greenhouse vegetable industry in British Columbia is an expanding agricultural sector producing peppers, English cucumbers, tomatoes, and butter lettuce. Current production methods generate up to 4.5 litres of high nutrient runoff per square metre production area per day. The disposal of this wastewater untreated poses a significant environmental concern due to the potential for the high concentrations of nitrate and phosphate to induce eutrophication and alter the structure and dynamics of aquatic ecosystems. Technical problems surrounding the sterilization and recycling of greenhouse overdrain has lead the greenhouse industry to investigate the use of constructed wetlands as a wastewater treatment option. In the spring of 1995 a pilot scale research project was initiated to assess the use of constructed wetlands for treatment of this low organic carbon, high nutrient wastewater. Five wetland designs, based on conventional surface flow (SF) and subsurface flow (SSF) design approaches, were assessed. These designs were: 15 cm water depth planted SF wetlands; 30 cm water depth planted SF wetlands; 30 cm water depth unplanted SF wetlands; 60 cm depth gravel bed planted SSF wetlands; and, 60 cm depth gravel bed unplanted SSF wetlands. Samples were collected every second week between April and December 1996 from three sites within each wetland and analyzed for: ammonia, nitrate, total Kjeldahl nitrogen, total phosphorus, ortho-phosphate, total solids, total organic carbon and biochemical oxygen demand. Results of this study indicate that none of the individual designs assessed is capable of providing the highest treatment effect for all parameters concerned; however, the surface flow design emerged as the most appropriate design for the remediation of greenhouse wastewaters. No treatment effect was observed for either total Kjeldahl nitrogen or total solids in any of the designs assessed. The highest mean reductions of phosphorus was 65 % observed in one of the two unplanted SF wetlands. Peak nitrate reductions of 54% were observed in the 15 cm deep SF wetlands and ammonia removal of 74% were achieved in the unplanted SF wetlands. An increase in biochemical oxygen demand and total organic carbon was seen in all wetland designs. Based on available literature and the results of this research project, a multi-stage design, consisting of an unplanted pre-treatment basin followed by a 25 to 35 cm deep surface flow marsh with open water components, is recommended.
Raman Spectra of K2ReCl6, published in PRB 107, 214301 (2023)
Creators: name: Stein, Philipp
name: van Loosdrecht, Paul
name: Koethe, Thomas
Publisher: name: Zenodo
Year: 2023
Subjects: K2ReCl6
Raman
phase transition
local disorder
low energy scattering continuum
Raman selection rules

description: Raman Spectra of K2ReCl6 in c(aa)c' and c(ab)c' configuration from 5 K to 200 K. Spectra shown and discussed in Phys. Rev. B 107 214301 (2023), also available as preprint https://arxiv.org/abs/2209.05866.
description: {"references": ["Phys. Rev. B 107\u00a0214301 (2023)"]}
Electromagnetic transitions of the singly charmed baryons with spin 3/2
Creators: name: Kim, June-Young
name: Kim, Hyun-Chul
name: Yang, Ghil-Seok
name: Oka, Makoto
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We investigate the electromagnetic transitions of the singly charmed baryons with spin 3/2, based on a pion mean-field approach, also known as the chiral quark-soliton model, taking into account the rotational $1/N_c$ corrections and the effects of flavor SU(3) symmetry breaking. We examine the valence- and sea-quark contributions to the electromagnetic transition form factors and find that the quadrupole form factors of the sea-quark contributions dominate over those of the valence-quark ones in the smaller $Q^2$ region, whereas the sea quarks only provide marginal contributions to the magnetic dipole transition form factors of the baryon sextet with spin 3/2. The effects of the flavor SU(3) symmetry breaking are in general very small except for the forbidden transition $Ξ_c^0γ\to Ξ_c^{*0}$ by $U$-spin symmetry. We also discuss the widths of the radiative decays for the baryon sextet with spin 3/2, comparing the present results with those from other works.
description: 22 pages. 9 figures
The electronic transport properties and microstructure of carbon nanofiber/epoxy composites
Creators: name: Allaoui, Aïssa
name: Hoa, Suong V.
name: Pugh, Martin D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Carbon nanofibres (CNF) were dispersed into an epoxy resin using a combination of ultrasonication and mechanical mixing. The electronic transport properties of the resulting composites were investigated by means of impedance spectroscopy. It was found that a very low critical weight fraction (pc = 0.064 wt %) which may be taken to correspond to the formation of a tunneling conductive network inside the matrix. The insulator-to-conductor transition region spanned about one order of magnitude from 0.1 to 1 wt %. Far from the transition, the conductivity increased by two orders of magnitude. This increase and the low value of the conductivity were explained in terms of the presence of an epoxy film at the contact between CNF. A simple model based on the CNF-CNF contact network inside the matrix was proposed in order to evaluate the thickness of that film.
description: 7 pages
A unified meshfree pseudospectral method for solving both classical and fractional PDEs
Creators: name: Burkardt, John
name: Wu, Yixuan
name: Zhang, Yanzhi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper, we propose a meshfree method based on the Gaussian radial basis function (RBF) to solve both classical and fractional PDEs. The proposed method takes advantage of the analytical Laplacian of Gaussian functions so as to accommodate the discretization of the classical and fractional Laplacian in a single framework and avoid the large computational cost for numerical evaluation of the fractional derivatives. These important merits distinguish it from other numerical methods for fractional PDEs. Moreover, our method is simple and easy to handle complex geometry and local refinement, and its computer program implementation remains the same for any dimension $d \ge 1$. Extensive numerical experiments are provided to study the performance of our method in both approximating the Dirichlet Laplace operators and solving PDE problems. Compared to the recently proposed Wendland RBF method, our method exactly incorporates the Dirichlet boundary conditions into the scheme and is free of the Gibbs phenomenon as observed in the literature. Our studies suggest that to obtain good accuracy the shape parameter cannot be too small or too big, and the optimal shape parameter might depend on the RBF center points and the solution properties.
description: 24 pages; 15 figures
On the nonlocal Darboux transformation for the stationary axially symmetric Schrödinger and Helmholtz equations
Creators: name: Kudryavtsev, Andrey
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The nonlocal Darboux transformation for the stationary axially symmetric Schrödinger and Helmholtz equations is considered. Formulae for the nonlocal Darboux transformation are obtained and its relation to the generalized Moutard transformation is established. New examples of two - dimensional potencials and exact solutions for the stationary axially symmetric Schrödinger and Helmholtz equations are obtained as an application of the nonlocal Darboux transformation.
description: 12 pages. arXiv admin note: text overlap with arXiv:1911.05023