cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum yields of decomposition in the photolytic oxidation of methyl mercaptan, dimethyl sulphide and dimethyl disulphide
Creators: name: Sheraton, Donald Frederick
Publisher: name: University of British Columbia
Year: 2010

description: The Kraft pulping process produces vast quantities of sulphide vapours which are released to atmosphere. The major components are methyl mercaptan, hydrogen sulphide, dimethyl sulphide and dimethyl disulphide. The fate of these compounds in the atmosphere and the kinetics of their degradation processes in the atmosphere are useful in the modeling of the environment of areas proximate to Kraft pulp mills. The information may also be useful in developing pollution abatement processes. The photolytic oxidation of methyl mercaptan, dimethyl sulphide and dimethyl disulphide was studied in a batch photolysis apparatus. Short wavelength ultra-violet light was provided by a deuterium discharge lamp and monitored by a monochromator equipped with an extended response photo-multiplier tube. Sulphide concentrations were determined on a gas chromatograph equipped with a flame photmetric detector having 365 nm sulphur response. The rate of reaction of methyl mercaptan was found to be a linear function of the photon absorption rate and exhibited a quantum yield of decomposition of 13.9. The methyl mercaptan photo-oxidation rate was found to be unaffected by increased oxygen concentration, decreased atmospheric pressure or the presence of excess sulphur dioxide. The quantum yield of dimethyl sulphide decomposition was found to be dependent upon atmospheric pressure. A pressure of one atmosphere gave a quantum yield of 4 and the yield increased to 8 at one-quarter atmosphere. The quantum yield of dimethyl disulphide.was found to be 1.9 at atmospheric pressure at a concentration of 7.04 x 10⁻⁵M. The apparatus was also operated in a configuration which allowed the detection of light emitted at 90° to the path of illumination. A slow developing emission was found for dimethyl sulphide, hydrogen sulphide and •sulphur dioxide. Only slight emission was found for methyl mercaptan and dimethyl disulphide. The emission from dimethyl sulphide was found to be linearily dependent upon the nitrogen pressure of a dry nitrogen atmosphere. The emission is attributed to aerosol formation and is due to the light scattered from particles in the reaction matrix.
Ad-hoc Limited Scale-Free Models for Unstructured Peer-to-Peer Networks
Creators: name: Guclu, Hasan
name: Kumari, Durgesh
name: Yuksel, Murat
Publisher: name: arXiv
Year: 2008
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Several protocol efficiency metrics (e.g., scalability, search success rate, routing reachability and stability) depend on the capability of preserving structure even over the churn caused by the ad-hoc nodes joining or leaving the network. Preserving the structure becomes more prohibitive due to the distributed and potentially uncooperative nature of such networks, as in the peer-to-peer (P2P) networks. Thus, most practical solutions involve unstructured approaches while attempting to maintain the structure at various levels of protocol stack. The primary focus of this paper is to investigate construction and maintenance of scale-free topologies in a distributed manner without requiring global topology information at the time when nodes join or leave. We consider the uncooperative behavior of peers by limiting the number of neighbors to a pre-defined hard cutoff value (i.e., no peer is a major hub), and the ad-hoc behavior of peers by rewiring the neighbors of nodes leaving the network. We also investigate the effect of these hard cutoffs and rewiring of ad-hoc nodes on the P2P search efficiency.
description: 10 pages, 6 figures, 43 references. Proceedings of The 8th IEEE International Conference on Peer-to-Peer Computing 2008 (IEEE P2P 2008), Aachen, Germany
Syntheses and characterization of single crystal metal-organic frameworks for optical applications
Creators: name: Deutsch, Anna-Lena Erika Renate
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2023
Subjects: subject: Metall-Organische Gerüstverbindungen
subject: Anisotroper Brechungsindex
subject: Immersionsmethode
subject: Einkristalle
subject: LED Materialien
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: This dissertation deals with the syntheses, optical characterization and optical application of metal-organic frameworks (MOFs). In the first part of this thesis, different MOF single crystals were synthesized. Different structures were investigated in which either the metal cations or the organic linker molecules were varied. The organic linker molecules were also modified by post-synthetic variation. In order to obtain precise refractive indices of these MOF single crystals, the immersion method was used. To the best of our knowledge, this method has not yet been used in the characterization of MOFs. Consequently, besides the measurements itself, the investigation of the suitability of the method was also part of the work. The second part of this thesis deals with the syntheses of Ce(IV)bdc CsPbBr3 SiO2 materials for use in light-emitting devices (LEDs). For this purpose, different synthesis routes were investigated and the materials obtained were subsequently tested for their stability and performance. For stability testing, the materials were processed into films and exposed to high-intensity illumination as well as elevated temperature and humidity. The aim is to increase the stability of perovskite while still maintaining their highly luminescent performance by embedding them into a MOF-material.
Research News--Recent Advances in the Study of B-meson systems
Creators: name: Abbas, Gauhar
name: Ananthanarayan, B.
name: Ashok, Kriti
name: Sankar, S. Uma
Publisher: name: arXiv
Year: 2008
Subjects: subject: Popular Physics (physics.pop-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: An accessible review of recent discoveries concerning B-meson systems including those from Belle and BaBar on direct CP asymmetries, and the measurement of the width difference of B_s-meson system at Fermilab is presented.
description: 5 pages latex using axodraw.sty, to appear in Current Science
Mott-Hubbard gap closure and structural phase transition in the oxyhalides TiOBr and TiOCl under pressure
Creators: name: Kuntscher, C. A.
name: Pashkin, A.
name: Hoffmann, H.
name: Frank, S.
name: Klemm, M.
name: Horn, S.
name: Schönleber, A.
name: van Smaalen, S.
name: Hanfland, M.
name: Glawion, S.
name: Sing, M.
name: Claessen, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Pressure-dependent transmittance and reflectance spectra of TiOBr and TiOCl single crystals at room temperature suggest the closure of the Mott-Hubbard gap, i.e., the gap is filled with additional electronic states extending down to the far-infrared range. According to pressure-dependent x-ray powder diffraction data the gap closure coincides with a structural phase transition. The transition in TiOBr occurs at slightly lower pressure ($p$=14 GPa) compared to TiOCl ($p$=16 GPa) under hydrostatic conditions, which is discussed in terms of the chemical pressure effect. The results of pressure-dependent transmittance measurements on TiOBr at low temperatures reveal similar effects at 23 K, where the compound is in the spin-Peierls phase at ambient pressure.
description: 11 pages, 12 figures; to appear in Phys. Rev. B
High-Rate Space-Time Coded Large MIMO Systems: Low-Complexity Detection and Channel Estimation
Creators: name: Mohammed, Saif K.
name: Zaki, Ahmed
name: Chockalingam, A.
name: Rajan, B. Sundar
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we present a low-complexity algorithm for detection in high-rate, non-orthogonal space-time block coded (STBC) large-MIMO systems that achieve high spectral efficiencies of the order of tens of bps/Hz. We also present a training-based iterative detection/channel estimation scheme for such large STBC MIMO systems. Our simulation results show that excellent bit error rate and nearness-to-capacity performance are achieved by the proposed multistage likelihood ascent search (M-LAS) detector in conjunction with the proposed iterative detection/channel estimation scheme at low complexities. The fact that we could show such good results for large STBCs like 16x16 and 32x32 STBCs from Cyclic Division Algebras (CDA) operating at spectral efficiencies in excess of 20 bps/Hz (even after accounting for the overheads meant for pilot based training for channel estimation and turbo coding) establishes the effectiveness of the proposed detector and channel estimator. We decode perfect codes of large dimensions using the proposed detector. With the feasibility of such a low-complexity detection/channel estimation scheme, large-MIMO systems with tens of antennas operating at several tens of bps/Hz spectral efficiencies can become practical, enabling interesting high data rate wireless applications.
description: v3: Performance/complexity comparison of the proposed scheme with other large-MIMO architectures/detectors has been added (Sec. IV-D). The paper has been accepted for publication in IEEE Journal of Selected Topics in Signal Processing (JSTSP): Spl. Iss. on Managing Complexity in Multiuser MIMO Systems. v2: Section V on Channel Estimation is updated
Model-agnostic vs. Model-intrinsic Interpretability for Explainable Product Search
Creators: name: Ai, Qingyao
name: Ramasamy, Lakshmi Narayanan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Product retrieval systems have served as the main entry for customers to discover and purchase products online. With increasing concerns on the transparency and accountability of AI systems, studies on explainable information retrieval has received more and more attention in the research community. Interestingly, in the domain of e-commerce, despite the extensive studies on explainable product recommendation, the studies of explainable product search is still in an early stage. In this paper, we study how to construct effective explainable product search by comparing model-agnostic explanation paradigms with model-intrinsic paradigms and analyzing the important factors that determine the performance of product search explanations. We propose an explainable product search model with model-intrinsic interpretability and conduct crowdsourcing to compare it with the state-of-the-art explainable product search model with model-agnostic interpretability. We observe that both paradigms have their own advantages and the effectiveness of search explanations on different properties are affected by different factors. For example, explanation fidelity is more important for user's overall satisfaction on the system while explanation novelty may be more useful in attracting user purchases. These findings could have important implications for the future studies and design of explainable product search engines.
title: Frontmatter, Table of Contents, Preface, Conference Organization
Creators: name: Cégielski, Patrick
name: Durand, Arnaud
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2012
Subjects: subject: Frontmatter
subject: Table of Contents
subject: Preface
subject: Conference Organization

description: Frontmatter, Table of Contents, Preface, Conference Organization
description: LIPIcs, Vol. 16, Computer Science Logic (CSL'12) - 26th International Workshop/21st Annual Conference of the EACSL, pages i-xiv
First Measurement of $ν_μ$ and $ν_e$ Events in an Off-Axis Horn-Focused Neutrino Beam
Creators: name: Adamson, P.
name: Aguilar-Arevalo, A. A.
name: Anderson, C. E.
name: Bazarko, A. O.
name: Bishai, M.
name: Brice, S. J.
name: Brown, B. C.
name: Bugel, L.
name: Cao, J.
name: Choudhary, B. C.
name: Coney, L.
name: Conrad, J. M.
name: Cox, D. C.
name: Curioni, A.
name: Djurcic, Z.
name: Finley, D. A.
name: Fleming, B. T.
name: Ford, R.
name: Gallagher, H. R.
name: Garcia, F. G.
name: Garvey, G. T.
name: Green, C.
name: Green, J. A.
name: Harris, D.
name: Hart, T. L.
name: Hawker, E.
name: Hylen, J.
name: Imlay, R.
name: Johnson, R. A.
name: Karagiorgi, G.
name: Kasper, P.
name: Katori, T.
name: Kobilarcik, T.
name: Kopp, S.
name: Kourbanis, I.
name: Koutsoliotas, S.
name: Laird, E. M.
name: Linden, S. K.
name: Link, J. M.
name: Liu, Y.
name: Liu, Y.
name: Loiacono, L.
name: Louis, W. C.
name: Marchionni, A.
name: Mahn, K. B. M.
name: Marsh, W.
name: McGregor, G.
name: Messier, M. D.
name: Metcalf, W.
name: Meyers, P. D.
name: Mills, F.
name: Mills, G. B.
name: Monroe, J.
name: Moore, C. D.
name: Nelson, J. K.
name: Nelson, R. H.
name: Nguyen, V. T.
name: Nienaber, P.
name: Nowak, J. A.
name: Ouedraogo, S.
name: Patterson, R. B.
name: Pavlovic, Z.
name: Perevalov, D.
name: Polly, C. C.
name: Prebys, E.
name: Raaf, J. L.
name: Ray, H.
name: Roe, B. P.
name: Russell, A. D.
name: Sandberg, V.
name: Schirato, R.
name: Schmitz, D.
name: Shaevitz, M. H.
name: Shoemaker, F. C.
name: Smart, W.
name: Smith, D.
name: Sodeberg, M.
name: Sorel, M.
name: Spentzouris, P.
name: Stancu, I.
name: Stefanski, R. J.
name: Sung, M.
name: Tanaka, H. A.
name: Tayloe, R.
name: Tzanov, M.
name: Vahle, P.
name: Van de Water, R.
name: Viren, B.
name: Wascko, M. O.
name: White, D. H.
name: Wilking, M. J.
name: Yang, H. J.
name: Yumiceva, F. X.
name: Zeller, G. P.
name: Zimmerman, E. D.
name: Zwaska, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report the first observation of off-axis neutrino interactions in the MiniBooNE detector from the NuMI beamline at Fermilab. The MiniBooNE detector is located 745 m from the NuMI production target, at 110 mrad angle ($6.3^{\circ}$) with respect to the NuMI beam axis. Samples of charged current quasi-elastic $ν_μ$ and $ν_e$ interactions are analyzed and found to be in agreement with expectation. This provides a direct verification of the expected pion and kaon contributions to the neutrino flux and validates the modeling of the NuMI off-axis beam.
description: 4 pages, 5 figures, Submitted to Phys. Rev. Lett
Uncertainties and shortcomings of ground surface temperature histories derived from inversion of temperature logs
Creators: name: Hartmann, Andreas
name: Rath, Volker
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geophysics (physics.geo-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Analysing borehole temperature data in terms of ground surface history can add useful information to reconstructions of past climates. Therefore, a rigorous assessment of uncertainties and error sources is a necessary prerequisite for the meaningful interpretation of such ground surface temperature histories. This study analyses the most prominent sources of uncertainty. The diffusive nature of the process makes the inversion relatively robust against incomplete knowledge of the thermal diffusivity. Similarly the influence of heat production is small. It turns out that for investigations of the last 1000 to 100000 years the maximum depth of the temperature log is crucial. More than 3000 m are required for an optimal inversion. Reconstructions of the last one or two millennia require only modestly deep logs (>300 m) but suffer severely from noisy data.
description: 28 pages, 18 figure, 3 tables
Phenomenological Meaning of a Neutrino Mass Matrix Related to Up-Quark Masses
Creators: name: Koide, Yoshio
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently, a curious neutrino mass matrix has been proposed: it is related to up-quark masses, and it can excellently give a nearly tribimaxial mixing. It is pointed out that, in order to obtain such successful results, three phenomenological relations among masses and CKM parameters must be simultaneously satisfied. This suggests that there must be a specific flavor-basis in which down-quark and charged lepton mass matrices are simultaneously diagonalized.
description: 16 pages, no figure, to appear in Phys.Rev.D
Structural studies on Klebsiella capsular polysaccharides
Creators: name: Folkman, Timothy Edward
Publisher: name: University of British Columbia
Year: 2010

description: To date, studies have revealed that seventy-eight serologically distinct strains of Klebsiella bacteria exist. The antigenic character of each strain in an immunological reaction is considered to be determined by the capsular polysaccharide which surrounds the bacterial cell. Structures of the capsular polysaccharides from well over half the known Klebsiella strains have been established; all of them unique. In a continuing program to elucidate the chemical structures of these polysaccharides in order to explain immunological responses, evidence for the structure of the antigens from Klebsiella serotypes K17 and K44 is presented. Methylation analysis was used to establish linkage positions of the monosaccharide units. Uronic acid degradation, periodate oxidation-Smith degradation, and partial hydrolysis were the techniques employed to generate and study oligosaccharides from the more complex polymer. Extensive use was made of ¹H and ¹³C nuclear magnetic resonance spectroscopy to indicate anomeric configurations of the oligo- and polysaccharides alike. Methods such as gas liquid chromatography, gas liquid chromatography-mass spectrometry, gel filtration chromatography, paper chromatography, and polarimetry have been used to isolate and identify the products obtained from the various degradative techniques. Although the polysaccharides of K-types 17 and 44 are part of a small group with the same qualitative composition, their structures are found to consist of the following dissimilar repeating units: [2 diagrams of chemical structures] The latter represents pentasaccharide repeating saccharide. the first unit in a example of Klebsiella a linear capsular poly-saccharide.
Thermal Conductivity from Core and Well log Data
Creators: name: Hartmann, Andreas
name: Rath, Volker
name: Clauser, Christoph
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The relationships between thermal conductivity and other petrophysical properties have been analysed for a borehole drilled in a Tertiary Flysch sequence. We establish equations that permit us to predict rock thermal conductivity from logging data. A regression analysis of thermal conductivity, bulk density, and sonic velocity yields thermal conductivity with an average accuracy of better than 0.2 W/(m K). As a second step, logging data is used to compute a lithological depth profile, which in turn is used to calculate a thermal conductivity profile. From a comparison of the conductivity-depth profile and the laboratory data it can be concluded that thermal conductivity can be computed with an accuracy of less than 0.3 W/(m K)from conventional wireline data. The comparison of two different models shows that this approach can be practical even if old and incomplete logging data is used. The results can be used to infer thermal conductivity for boreholes without appropriate core data that are drilled in a similar geological setting.
description: 18 pages, 9 figure, 3 tables
Kinetics of a mixed spin-1/2 and spin-3/2 Ising ferrimagnetic model
Creators: name: Deviren, B.
name: Keskin, M.
name: Canko, O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a study, within a mean-field approach, of the kinetics of a mixed ferrimagnetic model on a square lattice in which two interpenetrating square sublattices have spins that can take two values, $σ=\pm1/2$, alternated with spins that can take the four values, $S=\pm3/2, \pm1/2$. We use the Glauber-type stochastic dynamics to describe the time evolution of the system with a crystal-field interaction in the presence of a time-dependent oscillating external magnetic field. The nature (continuous and discontinuous) of transition is characterized by studying the thermal behaviors of average order parameters in a period. The dynamic phase transition points are obtained and the phase diagrams are presented in the reduced magnetic field amplitude $(h)$ and reduced temperature $(T)$ plane, and in the reduced temperature and interaction parameter planes, namely in the $(h, T)$ and $(d, T)$ planes, $d$ is the reduced crystal-field interaction. The phase diagrams always exhibit a tricritical point in $(h, T)$ plane, but do not exhibit in the $(d, T)$ plane for low values of $h$. The dynamic multicritical point or dynamic critical end point exist in the $(d, T)$ plane for low values of $h$. Moreover, phase diagrams contain paramagnetic $(p)$, ferromagnetic $(f)$, ferrimagnetic $(i)$ phases, two coexistence or mixed phase regions, $(f+p)$ and $(i+p)$, that strongly depend on interaction parameters.
description: 13 pages, 6 figures, submitted to Journal of Magnetism and Magnetic Materials
The Borexino detector at the Laboratori Nazionali del Gran Sasso
Creators: name: Borexino Collaboration
name: Alimonti, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Borexino, a large volume detector for low energy neutrino spectroscopy, is currently running underground at the Laboratori Nazionali del Gran Sasso, Italy. The main goal of the experiment is the real-time measurement of sub MeV solar neutrinos, and particularly of the mono energetic (862 keV) Be7 electron capture neutrinos, via neutrino-electron scattering in an ultra-pure liquid scintillator. This paper is mostly devoted to the description of the detector structure, the photomultipliers, the electronics, and the trigger and calibration systems. The real performance of the detector, which always meets, and sometimes exceeds, design expectations, is also shown. Some important aspects of the Borexino project, i.e. the fluid handling plants, the purification techniques and the filling procedures, are not covered in this paper and are, or will be, published elsewhere (see Introduction and Bibliography).
description: 37 pages, 43 figures, to be submitted to NIM
Signatures of non-universal gaugino and scalar masses at the Large Hadron Collider
Creators: name: Bhattacharya, Subhaditya
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We perform a multichannel analysis in context of the Large Hadron Collider (LHC) for supersymmetric (SUSY) theories with high-scale non-universal gaugino masses arising from different non-singlet representations of SU(5) and SO(10) gauge groups in a SUSY-GUT scenario and non-universal scalar masses in form of squark-slepton non-universality, third family scalar non-universality and that arising due to SO(10) $D$-terms. We present the numerical predictions over a wide region of parameter space using event generator {\tt Pythia}. Certain broad features emerge from the study which may be useful to identify these non-universal schemes and distinguish them from the minimal supergravity (mSUGRA) framework.
description: 3 pages, 10 figures, to appear in the proceedings of SUSY08
Late Gas accretion onto Primordial Minihalos: a Model for Leo T, Dark Galaxies and Extragalactic High-Velocity Clouds
Creators: name: Ricotti, Massimo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this letter we revisit the idea of reionization feedback on dwarf galaxy formation. We show that primordial minihalos with v_cir<20 km/s stop accreting gas after reionization, as it is usually assumed, but in virtue of their increasing concentration and the decreasing temperature of the intergalactic medium as redshift decreases below z=3, they have a late phase of gas accretion and possibly star formation. We expect that pre-reionization fossils that evolved on the outskirts of the Milky Way or in isolation show a bimodal star formation history with 12 Gyr old and <10 Gyr old population of stars. Leo T fits with this scenario. Another prediction of the model is the possible existence of a population of gas rich minihalos that never formed stars. More work is needed to understand whether a subset of compact high-velocity clouds can be identified as such objects or whether an undiscovered population exists in the voids between galaxies.
description: 5 pages, 4 figures, accepted version MNRAS 392, L45
Dynamical renormalization group methods in theory of eternal inflation
Creators: name: Podolsky, Dmitry I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Dynamics of eternal inflation on the landscape admits description in terms of the Martin-Siggia-Rose (MSR) effective field theory that is in one-to-one correspondence with vacuum dynamics equations. On those sectors of the landscape, where transport properties of the probability measure for eternal inflation are important, renormalization group fixed points of the MSR effective action determine late time behavior of the probability measure. I argue that these RG fixed points may be relevant for the solution of the gauge invariance problem for eternal inflation.
description: 11 pages; invited mini-review for Grav.Cosm
Students’ Motivation in Piano Learning: A Case Study in Australia
Creators: name: ZIJIA CHENG
Publisher: name: Monash University
Year: 2021
Subjects: Education

description: Learning the piano is a popular and beneficial activity with many learners across the globe. Many children begin to learn the piano, but few persist. Motivating students to persist, is important for their teachers, their parents, and students themselves. I explored motivational elements that facilitated student piano learning. I interviewed 34 upper primary and secondary-school piano students and three teachers. Students’ emotions are influential in students’ motivations. So, I developed a new theoretical framework of self-determination theory which may be suitable for not only piano context, but also other educational areas.
Assessment of a transient homogeneous reactor through in situ adaptive tabulation
Creators: name: Cunha, Americo
name: da Silva, Luis Fernando Figueira
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Dynamical Systems (math.DS)
subject: Computation (stat.CO)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: I.6.5
subject: 37N10

description: The development of computational models for the numerical simulation of chemically reacting flows operating in the turbulent regime requires the solution of partial differential equations that represent the balance of mass, linear momentum, chemical species, and energy. The chemical reactions of the model may involve detailed reaction mechanisms for the description of the physicochemical phenomena. One of the biggest challenges is the stiffness of the numerical simulation of these models and the nonlinear nature of species rate of reaction. This work presents a study of in situ adaptive tabulation (ISAT) technique, focusing on the accuracy, efficiency, and memory usage in the simulation of homogeneous stirred reactor models using simple and complex reaction mechanisms. The combustion of carbon monoxide with oxygen and methane with air mixtures are considered, using detailed reaction mechanisms with 4 and 53 species, 3 and 325 reactions, respectively. The results of these simulations indicate that the developed implementation of ISAT technique has a absolute global error smaller than 1 %. Moreover, ISAT technique provides gains, in terms of computational time, of up to 80% when compared with the direct integration of the full chemical kinetics. However, in terms of memory usage the present implementation of ISAT technique is found to be excessively demanding.
The Effects of Emotional Labour Coach Education Interventions on Performance Football Coaches' Awareness of Their Own Emotions
Creators: name: Darrington-Murphy, Conor
Publisher: name: UH Research Archive
Year: 2020
Subjects: emotional labour
surface acting
coach education
intervention
emotional awareness

description: This study explores the impact that coach education interventions that were designed utilising Hochschild’s (1983) emotional labour theory had on coaches’ awareness of emotions within their coaching practice. The study intended to provide performance football coaches with the opportunity to explore the under-researched emotionally charged environment of football coaching (Potrac, Smith & Nelson, 2017), whilst also exploring emotion within their individual stories and highlighting future recommendations from undertaking this experience. Hochschild (1983) developed the phrase emotional labour which contained surface acting and deep acting, moreover, Ashforth and Humphrey (1993) proposed genuine expression as a further manifestation of emotional labour. Research has identified the importance of conducting educational workshops on emotions (Larner, Wagstaff, Thelwell & Corbett, 2017; Lee, Chelladurai & Kim, 2015), thus, the researcher utilised an intervention approach (Gilbert & Trudel, 2004), in the form of an introductory interview, four coach education workshops and two follow-up interviews. The findings from this study indicated that coaches retained a heightened awareness of emotions within their coaching and an informed understanding of emotional labour within their coaching practice
title: Transformations des pratiques religieuses dans les processus de médiatisation. La prière digitale
title: Transformations des pratiques religieuses dans les processus de médiatisation. La prière digitale
Creators: name: Bratosin, Stefan
Publisher: name: Ad Aeternum
Year: 2021
Subjects: digital prayer
mediatization
religious communication
post neo-Protestantism

description: Abstract : The article problematizes, in the broad context of mediatization processes and through the prism of a thought that we have qualified as post-neo-Protestant, the transformations which mark religious practices due to their encounters with new information and communication technologies in the case of the digital prayer. Keywords: digital prayer, mediatization, religious communication, post neo-Protestantism Résumé : L'article problématise, dans le contexte large des processus de médiatisation et au prisme d'une pensée que nous avons qualifiée de post-néo-protestante, les transformations qui marquent les pratiques religieuses de par leurs rencontres avec les nouvelles technologies de l'information et de la communication dans le cas de la prière numérique. Mots-clés : prière numérique, médiatisation, communication religieuse, post néo-protestantisme
description: Ad Aeternum, v. 1 (2021): Revista Nº. 1
On certain semigroups of transformations with an invariant set
Creators: name: Sarkar, Mosarof
name: Singh, Shubh N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20M20, 20M17, 20M12

description: Let $X$ be a nonempty set and let $T(X)$ be the full transformation semigroup on $X$. The main objective of this paper is to study the subsemigroup $\overlineΩ(X, Y)$ of $T(X)$ defined by \[\overlineΩ(X, Y) = \{f\in T(X)\colon Yf = Y\},\] where $Y$ is a fixed nonempty subset of $X$. We describe regular elements in $\overlineΩ(X, Y)$ and show that $\overlineΩ(X, Y)$ is regular if and only if $Y$ is finite. We characterize unit-regular elements in $\overlineΩ(X, Y)$ and prove that $\overlineΩ(X, Y)$ is unit-regular if and only if $X$ is finite. We characterize Green's relations on $\overlineΩ(X, Y)$ and prove that $\mathcal{D} =\mathcal{J}$ on $\overlineΩ(X, Y)$ if and only if $Y$ is finite. We also determine ideals of $\overlineΩ(X, Y)$ and investigate its kernel. This paper extends several results appeared in the literature.
description: 14
Algebraic Bethe Ansatz for U(1) Invariant Integrable Models: The Method and General Results
Creators: name: Melo, C. S.
name: Martins, M. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 37K10

description: In this work we have developed the essential tools for the algebraic Bethe ansatz solution of integrable vertex models invariant by a unique U(1) charge symmetry. The formulation is valid for arbitrary statistical weights and respective number $N$ of edge states. We show that the fundamental commutation rules between the monodromy matrix elements are derived by solving linear systems of equations. This makes possible the construction of the transfer matrix eigenstates by means of a new recurrence relation depending on $N-1$ distinct types of creation fields. The necessary identities to solve the eigenvalue problem are obtained exploring the unitarity property and the Yang-Baxter equation satisfied by the $R$-matrix. The on-shell and off-shell properties of the algebraic Bethe ansatz are explicitly presented in terms of the arbitrary $R$-matrix elements. This includes the transfer matrix eigenvalues, the Bethe ansatz equations and the structure of the vectors not parallel to the eigenstates.
description: 90 pages
New organomtallic nitrosyl derivatives of the group 6B elements
Creators: name: Martin, David Timothy
Publisher: name: University of British Columbia
Year: 2011

description: The complexes CpM(NO)₂Cl (M=Cr, Mo or W) can be reduced using Na[A1H₂(OCH₂CH₂OCH₃)₂] to yield [CpCr(NO)₂]₂ and CpM(NO)₂H (M=Mo or W), respectively. A study of the chemistry of CpW(NO)₂H shows that it acts as a source of the hydride ion in polar solvents. For example, CpW(NO)₂H reacts with anhydrous p-toluenesulfonic acid to form CpW(NO)₂S0₃-C₇H₇. The complex also undergoes loss of H⁻ with Ph3CBF₄. This novel reactivity is compared with that exhibited by carbonylhydride complexes of the transition metals. The molybdenum congener, CpMo(NO)₂H, is unstable in the solid state but can be characterized in solution. No direct physical evidence can be found for the existence of CpCr(NO)₂H. The reaction of I₂ with CpW(CO)₂NO results in the isolation of a completely decarbonylated product, [CpW(NO)I₂]₂. CpW(CO)₂NO + I₂ → 1/2[CpW(NO)I ]₂ This dimeric compound reacts with a variety of reagents to form monomeric products. [FORMULA OMMITTED] An X-ray crystallographic analysis of this complex shows that the allyl group exhibits considerable σ π, ir distortion. This asymmetry is also evident in solution at ambient temperature. This fact allows straightforward analysis of the ¹H and ¹³C magnetic resonance spectra. The previously reported molybdenum analogue, [FORMULA OMMITTED] can be prepared by allylation of [FORMULA OMMITTED]
Analytic derivation of the inertial range of compressible turbulence
Creators: name: Goldman, Itzhak
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: An analytic model for steady state turbulence is employed to obtain the inertial range power spectrum of compressible turbulence. We assume that for homogeneous turbulence, the timescales controlling the energy injected at a given wavenumber from all smaller wave-numbers, are equal for each spatial component. However, the longitudinal component energy is diverted into compression, so the rate controlling the energy that is transferred to all larger wave-numbers by the turbulent viscosity is reduced. The resulting inertial range is a power law with index -2. Indeed such power spectra were observed in various astrophysical settings and also in numerical simulations.
description: 2 pages. Submitted to Phys. Fl
Fractional diffusion limit for collisional kinetic equations
Creators: name: Mellet, Antoine
name: Mischler, Stéphane
name: Mouhot, Clément
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 76P05, 26A33

description: This paper is devoted to diffusion limits of linear Boltzmann equations. When the equilibrium distribution function is Maxwellian distribution, it is well known that for an appropriate time scale, the small mean free path limit gives rise to a diffusion equation. In this paper, we consider situations in which the equilibrium distribution function is a heavy-tailed distribution with infinite variance. We then show that for an appropriate time scale, the small mean free path limit gives rise to a fractional diffusion equation.
Collisional effects in the blue wing of Lyman-alpha
Creators: name: Spiegelman, F.
name: Allard, N. F.
name: Kielkopf, J. F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Spectral observations below Lyman-alpha are now obtained with the Cosmic Origin Spectrograph (COS) on the Hubble Space Telescope (HST). It is therefore necessary to provide an accurate treatment of the blue wing of the Lyman-alpha line that enables correct calculations of radiative transport in DA and DBA white dwarf stars. On the theoretical front, we very recently developed very accurate H-He potential energies for the hydrogen 1s, 2s, and 2p states. Nevertheless, an uncertainty remained about the asymptotic correlation of the Sigma states and the electronic dipole transition moments. A similar difficulty occurred in our first calculations for the resonance broadening of hydrogen perturbed by collisions with neutral H atoms. The aim of this paper is twofold. First, we clarify the question of the asymptotic correlation of the Sigma states, and we show that relativistic contributions, even very tiny, may need to be accounted for a correct long-range and asymptotic description of the states because of the specific 2s 2p Coulomb degeneracy in hydrogen. This effect of relativistic corrections, inducing small splitting of the 2s and 2p states of H, is shown to be important for the Sigma-Sigma$ transition dipole moments in H-He and is also discussed in H-H. Second, we use existent (H-H) and newly determined (H-He) accurate potentials and properties to provide a theoretical investigation of the collisional effects on the blue wing of the Lyman-alpha line of H perturbed by He and H. We study the relative contributions in the blue wing of the H and He atoms according to their relative densities. We finally achieve a comparison with recent COS observations and propose an assignment for a feature centered at 1190 A.
Temperature dependence of the electron spin g factor in GaAs
Creators: name: Zawadzki, W.
name: Pfeffer, P.
name: Bratschitsch, R.
name: Chen, Z.
name: Cundiff, S. T.
name: Murdin, B. N.
name: Pidgeon, C. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The temperature dependence of the electron spin $g$ factor in GaAs is investigated experimentally and theoretically. Experimentally, the $g$ factor was measured using time-resolved Faraday rotation due to Larmor precession of electron spins in the temperature range between 4.5 K and 190 K. The experiment shows an almost linear increase of the $g$ value with the temperature. This result is in good agreement with other measurements based on photoluminescence quantum beats and time-resolved Kerr rotation up to room temperature. The experimental data are described theoretically taking into account a diminishing fundamental energy gap in GaAs due to lattice thermal dilatation and nonparabolicity of the conduction band calculated using a five-level kp model. At higher temperatures electrons populate higher Landau levels and the average $g$ factor is obtained from a summation over many levels. A very good description of the experimental data is obtained indicating that the observed increase of the spin $g$ factor with the temperature is predominantly due to band's nonparabolicity.
description: 6 pages 4 figures
COVID-19 Bibliometrics 11th – 17th January 2021
Creators: name: Www.Covid19bibliometrics.Org
Publisher: name: Zenodo
Year: 2021
Subjects: COVID-19
Medicine and Health
Science and Engineering
Social Science, Humanities and Public Policy
novel Coronavirus
SARS-CoV-2
2019-nCoV

description: This is a compilation of COVID-19 research insights published from 11th – 17th January 2021 in these fields: Medicine and Health Science and Engineering Social Science, Humanities and Public Policy About www.covid19bibliometrics.org
 Introduction: The number of confirmed cases during the current Covid-19 pandemic is escalating exponentially. At the same time, the public are constantly being inundated with a formidable quantity of information, from innumerable sources, and containing both genuine as well as fake news. The Covid-19 “infodemic” is here. Health professionals including medical doctors and nurses are busy fighting the virus on the front line in our communities and hospitals and struggling to treat the ever-growing number of cases. Scientists and technicians at their bench-tops and computers in their research laboratories, are racing to find solutions, create new protective equipment, and ideally develop a vaccine. They all need accurate, timely and reliable information upon which they can make their decisions, find solutions, and help defeat this pandemic. This initiative aims to provide reliable and timely (initially at least twice a week) web updates on the relevant published literature. “Reliable” and “timely” means that it can be trusted and it is up to date; “relevant” and “published” means that it is focused on what health professionals and scientists need when facing both the pandemic and the infodemic, and it can be trusted as sound science. We plan to make the material succinct and accessible, and to provide key bibliometric indices such as source and citation.
 Objectives: 1. To update the global scientific community on current Covid-19 related published papers in an accessible, timely and trusted format
 2. To analyse the published papers for trends and to provide insights
 3. To identify gaps in research
 4. To promote international research collaboration with a view to overcoming Covid-19 and promoting recovery Methodology: Covid-19 related publications to be searched using the Scopus database using as a minimum the following keywords: 2019-nCoV, SARS-CoV-2, Covid-19, novel Coronavirus. Papers then to be categorized according to topic, research fields, institutions, countries, etc. Abstracts and papers to be reviewed for findings, trends, key insights, etc. To read previous COVID-19 research insights, please go to:
 https://zenodo.org/communities/covid19bibliometrics/
description: More information, please go to https://www.covid19bibliometrics.org/
Magneto-thermal condensation modes including the effects of charged dust particles
Creators: name: Shadmehri, Mohsen
name: Dib, Sami
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study thermal instability in a magnetized and partially ionized plasma with charged dust particles. Our linear analysis shows that the growth rate of the unstable modes in the presence of dust particles strongly depends on the ratio of the cooling rate and the modified dust-cyclotron frequency. If the cooling rate is less than the modified dust-cyclotron frequency, then growth rate of the condensation modes does not modify due to the existence of the charged dust particles. But when the cooling rate is greater than (or comparable to) the modified dust-cyclotron frequency, the growth rate of unstable modes increases because of the dust particles. Also, wavenumber of the perturbations corresponding to the maximum growth rate shifts to the smaller values (larger wavelengths) as the cooling rate becomes larger than the modified dust-cyclotron frequency. We show that growth rate of the condensation modes increases with the electrical charge of the dust particles.
description: accepted by MNRAS
Evidence for Fe K$_α$ line and soft X-ray lag in NGC 7456 ULX-1
Creators: name: Mondal, Samaresh
name: Rozanska, Agata
name: De Marco, Barbara
name: Markowitz, Alex
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the first detection of a Fe K$_α$ line and soft X-ray lag in the ultraluminous X-ray source (ULX) NGC 7456 ULX-1. The XMM-Newton spectra show the presence of the 6.4 keV Fe line at 2.6$σ$ confidence and an upper limit on the FWHM of 32900 km s$^{-1}$. Assuming that the line arises by reflection from a Keplerian disk, it must originate beyond $85 r_{\rm g}$ from the compact object. As a result of Fourier timing analysis we found that the soft X-ray photons lag behind the hard X-ray photons with a $\sim$1300 s delay. The covariance spectra indicate that the hard spectral component is responsible for the correlated variability and the soft X-ray lag. This is the second ULX in which a Fe K$_α$ line is found, the fifth with a soft X-ray lag, and the first with both features detected.
description: 5 pages, 8 figures, accepted for publication in MNRAS Letters
title: Frontmatter, Table of Contents, List of Authors
Creators: name: Dovier, Agostino
name: Santos Costa, Vítor
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2012
Subjects: subject: Frontmatter
subject: Table of Contents
subject: List of Authors

description: Frontmatter, Table of Contents, List of Authors
description: LIPIcs, Vol. 17, Technical Communications of the 28th International Conference on Logic Programming (ICLP'12), pages i-xvi
Signature splitting in $^{173}$W with triaxial particle rotor model
Creators: name: Qi, B.
name: Zhang, S. Q.
name: Wang, S. Y.
name: Meng, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A particle rotor model with a quasi-neutron coupled with a triaxially deformed rotor is applied to study signature splitting for bands with intruder orbital $\nu7/2^{+} [633]$ and non-intruder orbital $\nu5/2^{-}[512]$ in $^{173}$W. Excellent agreement with the observed energy spectra has been achieved for both bands. Signature splitting for band $\nu7/2^{+} [633]$, and band $\nu5/2^{-}[512]$ before the onset of signature inversion, is satisfactorily reproduced by introducing the $γ$ degree of freedom. The phase and amplitude of signature splitting in band $\nu5/2^{-}[512]$ is attributed to strong competition between $2f_{7/2}$ and $1h_{9/2}$ components. However, the explanation of signature inversion in band $\nu5/2^{-}[512]$ self-consistently is beyond the present one quasi-neutron coupled with a triaxially deformed rotor.
description: 18 pages, 5 figures