cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optimisation of the event-based TOF filtered back-projection for online imaging in total-body J-PET
Creators: name: Shopa, R. Y.
name: Klimaszewski, K.
name: Kopka, P.
name: Kowalski, P.
name: Krzemień, W.
name: Raczyński, L.
name: Wiślicki, W.
name: Chug, N.
name: Curceanu, C.
name: Czerwiński, E.
name: Dadgar, M.
name: Dulski, K.
name: Gajos, A.
name: Hiesmayr, B. C.
name: Kacprzak, K.
name: Kapłon, Ł.
name: Kisielewska, D.
name: Korcyl, G.
name: Krawczyk, N.
name: Kubicz, E.
name: Niedźwiecki, Sz.
name: Raj, J.
name: Sharma, S.
name: Shivani
name: Stȩpień, E. L.
name: Tayefi, F.
name: Moskal, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Medical Physics (physics.med-ph)
subject: Computational Physics (physics.comp-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We perform a parametric study of the newly developed time-of-flight (TOF) image reconstruction algorithm, proposed for the real-time imaging in total-body Jagiellonian PET (J-PET) scanners. The asymmetric 3D filtering kernel is applied at each most likely position of electron-positron annihilation, estimated from the emissions of back-to-back $γ$-photons. The optimisation of its parameters is studied using Monte Carlo simulations of a 1-mm spherical source, NEMA IEC and XCAT phantoms inside the ideal J-PET scanner. The combination of high-pass filters which included the TOF filtered back-projection (FBP), resulted in spatial resolution, 1.5 $\times$ higher in the axial direction than for the conventional 3D FBP. For realistic $10$-minute scans of NEMA IEC and XCAT, which require a trade-off between the noise and spatial resolution, the need for Gaussian TOF kernel components, coupled with median post-filtering, is demonstrated. The best sets of 3D filter parameters were obtained by the Nelder-Mead minimisation of the mean squared error between the resulting and reference images. The approach allows training the reconstruction algorithm for custom scans, using the IEC phantom, when the temporal resolution is below 50 ps. The image quality parameters, estimated for the best outcomes, were systematically better than for the non-TOF FBP.
Campanulina denticulata Clarke 1907
Creators: name: Gil, Marta
name: Ramil, Fran
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Cnidaria
Hydrozoa
Leptothecata
Campanulinidae
Campanulina
Campanulina denticulata

description: Campanulina denticulata Clarke, 1907
Fig. 3F; Table 4
Campanulina denticulata Clarke, 1907: 12–13, pl. 8.
Campanulina denticulata – Stechow 1913: 122–123, fig. 92.
Opercularella denticulata – Vervoort 1966: 104–106, figs 4–5.
Material examined
SOUTH ATLANTIC OCEAN • 2 colonies, up to 10 mm high (1 growing on ghost fishing net) and with gonothecae; Valdivia Seamount, stn BT12, 24°49′01″– 24°47′38″ S, 6°24′40″– 6°25′26″ E; 887– 886 m depth; 7 Feb. 2015; SEAFO-2015 leg.; SEAFO-2015-40811, SEAFO-2015-40887.
Remarks
Campanulina denticulata was considered a synonym of Earleria panicula (G.O. Sars, 1874) by several authors (Leloup 1974; Schuchert 2003), but Calder (2012) suggested that the Atlantic E. panicula is a different species from the Indo-Pacific C. denticulata. The comparison of the material from the Valdivia Seamount with colonies of E. panicula collected in NW Africa showed some morphological differences, and agrees with descriptions of C. denticulata given by Clarke (1907) and Vervoort (1966).
Distribution
Campanulina denticulata has an Indo-Pacific distribution (Calder 2012). Its bathymetric distribution extends from more than 500 m (Clarke 1970, as Opercularella denticulata) to 4040 m deep (Vervoort 1966, as O. denticulata).
description: Published as part of Gil, Marta & Ramil, Fran, 2021, Hydroids (Cnidaria, Hydrozoa) from the Vema and Valdivia seamounts (SE Atlantic), pp. 49-96 in European Journal of Taxonomy 758 on pages 61-62, DOI: 10.5852/ejt.2021.758.1425, http://zenodo.org/record/5088125
Aspects of mould design in electroslag casting
Creators: name: Sathaye, Jayant Moreshwar
Publisher: name: University of British Columbia
Year: 2010

description: Electroslag casting is a process technique used to produce castings using electroslag melting. It is likely that channel cooled Aluminium moulds will be employed. Thus, the criteria for the design of moulds to be used in this process were examined. Temperatures in a mould section were measured and compared to those calculated from a model developed assuming 3-D quasi steady state heat flow and reasonable agreement was found. In the model the two major boundary conditions are the heat transfer coefficient to the coolant and the heat flux on the hot face. The former can be estimated from established correlations for heat transfer in tubes such as the Petukhov and the Sieder-Tate relations. The latter had to be measured and a heat flux sensor was developed for this. Proposals were made to qualitatively explain the heat flux variation along the mould height, but it was not possible to estimate the heat flux for a casting of arbitrary shape in a simple manner. According to the slag crystallisation mechanism proposed the influence of mould on the surface quality of the casting was found to be negligible.
SU(2)-invariant continuum theory for an unconventional phase transition in a three-dimensional classical dimer model
Creators: name: Powell, Stephen
name: Chalker, J. T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We derive a continuum theory for the phase transition in a classical dimer model on the cubic lattice, observed in recent Monte Carlo simulations. Our derivation relies on the mapping from a three-dimensional classical problem to a two-dimensional quantum problem, by which the dimer model is related to a model of hard-core bosons on the kagome lattice. The dimer-ordering transition becomes a superfluid-Mott insulator quantum phase transition at fractional filling, described by an SU(2)-invariant continuum theory.
description: 4+ pages, 1 figure
State mixing and masses of the $π^0$, $η$ and $η^\prime$ mesons from $n_f=1+1+1$ lattice QCD+QED
Creators: name: Kordov, Z. R.
name: Horsley, R.
name: Kamleh, W.
name: Koumi, Z.
name: Nakamura, Y.
name: Perlt, H.
name: Rakow, P. E. L.
name: Schierholz, G.
name: Stüben, H.
name: Young, R. D.
name: Zanotti, J. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a lattice analysis of the light pseudoscalar mesons with consideration for the mixing between the flavour-neutral states $π^0$, $η$ and $η^\prime$. We extract the masses and flavour compositions of the pseudoscalar meson nonet in $n_f=1+1+1$ lattice QCD+QED around an SU(3)-flavour symmetric point, and observe flavour-symmetry features of the extracted data, along with preliminary extrapolation results for the flavour compositions at the physical point. A key result of this work is the observed mass splitting between the $π^0$ and $η$ on our ensembles, which is found to exhibit behaviour that is simply related to the corresponding flavour compositions.
description: 9 pages, 4 figures. Some small changes and added discussion. Version to appear in PRD
APPROACHES TO THE DEVELOPMENT OF PROFESSIONAL CULTURE IN FUTURE TEACHERS
Creators: name: Safarova Rokhat Gaybullaevna Scientific research Institute of Pedagogical sciences of  Uzbekistan Head of the Department,  "Psychology and Pedagogy of Continuing Education," doctor of pedagogic sciences, professor
Publisher: name: Zenodo
Year: 2024

description: This article discusses the professional pedagogical culture, its components, the importance of the teacher's professional culture, the possibilities of developing the pedagogical culture, the personal and social interpretation of the professional pedagogical culture, the approaches that form the basis of the professional-pedagogical culture, and the importance of the formation of professional culture in future students. This article serves as a resource for the scientific and pedagogical community, students, professors, researchers, and school teachers.

Key words: culture, professional-pedagogical culture, values, social-cultural experience, social-cultural consciousness, cultural outlook, activity, creativity, active technological approach, humanism, professional maturity, pedagogical skills.
Method/material files of How Social Media Influencers’ Emotional Expressions Shape Their Popularity
Creators: name: Gu, Siyi
name: Van Kleef, Gerben A.
name: Heerdink, Marc W.
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 520505
subject: Social psychology

description: Method/material files of How Social Media Influencers’ Emotional Expressions Shape Their Popularity
MPEC 2024-T22 : COMET C/2024 S1 (ATLAS)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: COMET C/2024 S1 (ATLAS)

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
On the relation between the WRT invariant and the Hennings invariant
Creators: name: Chen, Qi
name: Kuppum, Srikanth
name: Srinivasan, Parthasarathy
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 57M27; 81T45

description: The purpose of this note is to provide a simple relation between the Witten-Reshetikhin-Turaev SO(3) invariant and the Hennings invariant of 3-manifolds associated to quantum sl_2.
description: 14 pages, 1 figure
Classification of Dirac points with higher-order Fermi arcs
Creators: name: Fang, Yuan
name: Cano, Jennifer
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Dirac semimetals lack a simple bulk-boundary correspondence. Recently, Dirac materials with four-fold rotation symmetry have been shown to exhibit a higher order bulk-hinge correspondence: they display "higher order Fermi arcs," which are localized on hinges where two surfaces meet and connect the projections of the bulk Dirac points. In this paper, we classify higher order Fermi arcs for Dirac semimetals protected by a rotation symmetry and the product of time-reversal and inversion. Such Dirac points can be either linear in all directions or linear along the rotation axis and quadratic in other directions. By computing the filling anomaly for momentum-space planes on either side of the Dirac point, we find that all linear Dirac points exhibit higher order Fermi arcs terminating at the projection of the Dirac point, while the Dirac points that are quadratic in two directions lack such higher order Fermi arcs. When higher order Fermi arcs do exist, they obey either a $\mathbb{Z}_2$ (four-fold rotation axis) or $\mathbb{Z}_3$ (three- or six-fold rotation axis) group structure. Finally, we build two models with six-fold symmetry to illustrate the cases with and without higher order Fermi arcs. We predict higher order Fermi arcs in Na$_3$Bi.
description: Published version, minor typos and title changed; 23 pages, 6 figures
Mathematical modelling of phase transformation in a plain carbon eutectoid steel
Creators: name: Iyer, Jayaraman Rajagopalan
Publisher: name: University of British Columbia
Year: 2010

description: With the ultimate objective of quantitatively predicting the mechanical properties of steels, a mathematical model has been developed to compute the transient temperature distribution and austenite-pearlite transformation in an eutectoid steel rod during controlled cooling. The model is based on one-dimensional, unsteady-state heat conduction and incorporates empirical TTT data in the form of the parameters n and b(T) from the Avrami equation and the CCT start time, t[sub AV-CCT]. This data was obtained using a diametral dilatometer for an eutectoid steel of composition 0.82% C -0.82% Mn - 0.26% Si and a grain size of 5-7 ASTM. CCT kinetics are predicted from the TTT data by the additivity principle originally proposed by Scheil. The adequacy of the model was cheeked by comparing model1 predictions of the centre-line temperature of 9 and 10 mm diameter rods to measurements made during air cooling from an initial temperature between 840 and 870°C. The agreement obtained was good. Also the conditions determined by Avrami and Cahn for the additivity principle to hold were checked. Even though model predictions of CCT from TTT data generally were good, the application restrictions were not satisfied. Thus a new sufficient condition has been proposed which holds for the steel under study and establishes a firm theoretical foundation for model calculations. The condition, termed "effective site saturation", indicates that for growth dominated reactions, wherein the rate of reaction is governed by the growth of nuclei nucleated very early in the reaction, the kinetics can be considered additive due to the relative unimportance of subsequent nucleation. This condition suggests that the additivity rule may have a much broader range of applicability than was originally supposed. The calculation of TTT from CCT has been studied and a new method, involving an interative procedure using the additivity rule, has been derived. Agreement between calculated and measured TTT data is good. Finally the model has been employed to study the effect of centre segregation of manganese on the transformation behaviour of eutectoid steel rods and also to predict the mechanical properties of the same steel. Calculations indicate that segregation can lead to the formation of martensite at the centre of the rods with faster cooling rates. The calculation of mechanical properties is based on published relationships between pearlite spacing, undercooling and mechanical properties.
Campanularia africana Stechow 1923
Creators: name: Gil, Marta
name: Ramil, Fran
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Cnidaria
Hydrozoa
Leptothecata
Campanulariidae
Campanularia
Campanularia africana

description: Campanularia africana Stechow, 1923
Fig. 3G–H; Table 5
Campanularia africana Stechow, 1923: 104.
Campanularia africana – Leloup 1938: 13–14, fig. 9. — Millard 1975: 204, fig. 67a.
Material examined
SOUTH ATLANTIC OCEAN • 2 colonies, growing on algae, without gonothecae; Vema Seamount, stn BT5; 31°37′16″–31°36′58″ S, 8°22′37″–8°23′06″ E; 71–94 m depth; 31 Jan. 2015; SEAFO-2015 leg.; SEAFO-2015-40437, SEAFO-2015-40768, LZM-UV slide R. 577.
Distribution
Campanularia africana has previously been reported from Australia (Watson 1990), Japan (Stechow 1923; Leloup 1938; Hirohito 1995) and Natal, South Africa (Millard 1975). Its bathymetric distribution extends from the littoral area to a depth of 102 m (Millard 1975; Stechow 1925). Our finding of C. africana at Vema Seamount represents the first record of this species for the Atlantic Ocean.
description: Published as part of Gil, Marta & Ramil, Fran, 2021, Hydroids (Cnidaria, Hydrozoa) from the Vema and Valdivia seamounts (SE Atlantic), pp. 49-96 in European Journal of Taxonomy 758 on page 62, DOI: 10.5852/ejt.2021.758.1425, http://zenodo.org/record/5088125
Effectiveness of the Linguistic Plays on Improving the Reading Skills of Educable Mentally Retarded Preliminary School Students
Creators: name: Mohsen Asghari Nekah, Seyed
name: Mohanadpor, Hadi
name: Alinejad, Mahdi
name: Ebrahimi, Shima
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 390411
subject: Special education and disability

description: The Present study has been conducted with the Purpose of exploring linguistic Plays in increasing reading skill among retarded students. The kind of the study is quasi-experimental with Pre-test and Post-test, being conducted among all retarded students studying in second grade of elementary schools at Mashhad. The sample included 30 subjects, randomly selected and assigned as experimental and control. Then the experimental group received 20 sessions of linguistic Plays. In data collection we used two standard tests, namely Raven children test for homogenous subjects, and Phonological knowledge test, and also two researcher-made tests of reading speed and comprehension with appropriate validity and reliability. In data analysis, in descriptive level, we used indicators of central tendency, dispersion index, frequency distribution table, diagram and etc. and in inferential level, in addition to examining the normality of data and investigating test hypotheses we used covariance analysis and t-test. The findings show that: 1. Phonological skill score of retarded students receiving intervention (linguistic Plays), has been higher compared to control group. 2. No difference has been found regarding reading speed score among both groups. 3. Reading comprehension score of experimental group has been higher than control group. Therefore, the results indicate that this educational method has been appropriate and can increase retarded students' reading skill
Tail contributions to gravitational conservative dynamics
Creators: name: Almeida, Gabriel Luz
name: Foffa, Stefano
name: Sturani, Riccardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compute tail contributions to the conservative dynamics of a generic self-gravitating system, for every multipole order, of either electric and magnetic parity. Such contributions arise when gravitational radiation is backscattered by the static curvature generated by the source itself and reabsorbed. Tail processes are relevant for the study of compact binary dynamics starting from the fourth post-Newtonian order. Within this context, we resolve a discrepancy recently arised at fifth post-Newtonian order between Effective Field Theory and self-force results.
description: 16 pages, 2 figures. Minor changes wrt v1, to make it conform to the version published on PRD
DEVELOPMENT AND VALIDATION OF RP-HPLC METHOD FOR THE SIMULTANEOUS ESTIMATION OF BUPRENORPHINE AND NALOXONE IN BULK AND PHARMACEUTICAL DOSAGE FORM
Creators: name: S. Bhavana *, Dr.G.Vijaya Kumar, B.Sravanthi
Publisher: name: Zenodo
Year: 2023

description: A novel, precise, accurate, rapid and cost effective isocratic reverse phase high performance liquid chromatographic (RP-HPLC) method was developed, optimized and validated for the estimation of Buprenorphine and Naloxone in bulk and pharmaceutical dosage forms. The drugs were estimated using Phenomenex Gemini C18 (4.6mm×150mm, 5.0 µm) particle size column. A mobile phase composed of tri ethylamine buffer and methanol in proportion of 32:68 v/v, at a flow rate of 1.0 ml/min was used for the separation. Detection was carried out at 248 nm. The linearity range obtained was 30-70 µg/ml for Buprenorphine and 10-50 µg/ml for Naloxone with retention times (Rt) of 3.297 min and 5.405 min for Buprenorphine and Naloxone respectively. The correlation coefficient values were found to be 0.999 & 0.999. Precession studies showed % RSD values less than 2 % for both the drugs in all the selected concentrations. The percentage recoveries of Buprenorphine and Naloxone were found to be 100.1873% for Buprenorphine and 100.748% for Naloxone respectively. The assay results of Buprenorphine and Naloxone were found to be 99.82%. The limit of detection (LOD) and limit of quantification (LOQ) were 2.6µg/ml and 7.8µg/ml for Buprenorphine and 3.4µg/ml 10.2µg/ml for Naloxone respectively. The proposed method was validated as per the International Conference on Harmonization (ICH) guidelines. The proposed validated method was successfully used for the quantitative analysis of commercially available dosage form.

Keywords: Buprenorphine and Naloxone, RP-HPLC, ICH Guidelines, Validation.
BV photometry of a possible open star cluster pair NGC 7031/NGC 7086
Creators: name: Kopchev, Valentin
name: Petrov, Georgy
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a CCD BV photometry of the possible binary open star cluster NGC 7031/NGC 7086. The aim is to confirm or disprove their common nature on the grounds of their age and distance. An age of 224 $\pm$ 25 Myr and distance 831 $\pm$ 72 pc was determined for NGC 7031 and 178 $\pm$ 25 Myr, 955 $\pm$ 84 pc for NGC 7086, respectively. Based on these differences in age and distance we conclude that the two clusters are most likely not formed together from one and the same Giant Molecular Cloud and thus are not a true binary cluster.
description: 4 pages, 6 figures, accepted for publication by AN
The Toroidal Obscuration of Active Galactic Nuclei
Creators: name: Elitzur, Moshe
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations give strong support for the unification scheme of active galactic nuclei. The scheme is premised on toroidal obscuration of the central engine by dusty clouds that are individually very optically thick. These lectures summarize the torus properties, describe the handling and implications of its clumpy nature and present speculations about its dynamic origin.
description: To appear in proceedings of "Active Galactic Nuclei at the highest angular resolution: theory and observations", 2007 summer school, Torun, Poland
Dynamic behavior of nanobeams under axial loads: Integral elasticity modeling and size-dependent eigenfrequencies assessment
Creators: name: Barretta, Raffaele
name: Čanađija, Marko
name: de Sciarra, Francesco Marotti
name: Skoblar, Ante
name: Žigulić, Roberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In this article, eigenfrequencies of nano-beams under axial loads are assessed by making recourse to the well-posed stress-driven nonlocal model (SDM) and strain-driven two-phase local/nonlocal formulation (NstrainG) of elasticity and Bernoulli-Euler kinematics. The developed nonlocal methodology is applicable to a wide variety of nano-engineered materials, such as carbon nanotubes, and modern small-scale beam-like devices of nanotechnological interest. Eigenfrequencies calculated using SDM, are compared with NstrainG and other pertinent results in literature obtained by other nonlocal strategies. Influence of nonlocal thermoelastic effects and initial axial force (tension and compression) on dynamic responses are analyzed and discussed. Model hardening size effects from stress-driven approach is compared to model softening size effects from strain-driven two-phase local/nonlocal approach for increasing nonlocal parameters.
The fraction of binary systems in the core of thirteen low-density Galactic globular clusters
Creators: name: Sollima, A.
name: Beccari, G.
name: Ferraro, F. R.
name: Pecci, F. Fusi
name: Sarajedini, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We used deep observations collected with ACS@HST to derive the fraction of binary systems in a sample of thirteen low-density Galactic globular clusters. By analysing the color distribution of Main Sequence stars we derived the minimum fraction of binary systems required to reproduce the observed color-magnitude diagram morphologies. We found that all the analysed globular clusters contain a minimum binary fraction larger than 6% within the core radius. The estimated global fractions of binary systems range from 10% to 50% depending on the cluster. A dependence of the relative fraction of binary systems on the cluster age has been detected, suggesting that the binary disruption process within the cluster core is active and can significantly reduce the binary content in time.
description: 12 pages, 10 figures, accepted for publication by MNRAS
Basics of Research Design
Creators: name: Adetayo Olorunlana
Publisher: name: Zenodo
Year: 2018

description: As the architectural design is to a building so also is research design to all academic enquiry. Most times, it is first conceived by the landlord before involving the architect who also need to research on the land, the texture, space, and the resources available and then give professional advice on the planning. These concepts from the builder are therefore translated into a sketchy plan, then to obtain permits, put forward a work schedule and then order materials. There is no need ordering materials or putting workers at the site until the designs (i.e. architectural, electrical, civil structural drawings) among others of building have presented, reviewed and approved. The design may be an office building, a factory, a school, a residential home. The same process is essential in social sciences, medical sciences, management and legal studies to conceive a research topic, employ high-level sophisticated planning in data generation and analysis, all these processes ought to be included in the research design as a methodological tool to achieve the desired goals of the research enterprise.
An oscillating, homogeneous and isotropic Universe from Scalar-Tensor gravity
Creators: name: Corda, Christian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An oscillating, homogeneous and isotropic Universe which arises from Scalar-Tensor gravity is discussed in the linearized approach, showing that some observative evidences like the Hubble Law and the Cosmological Redshift are in agreement with the model. In this context Dark Energy appears like a pure curvature effect arising by the scalar field.
description: Integration of of a previous research on oscillating Universes published in Gen. Rel. Grav. DOI: 10.1007/s/10714-088-0627-3. The paper has been accepted for publication by the International Journal of Theoretical Physics, Group Theory and Nonlinear Optics
Crowd-sensing Enhanced Parking Patrol using Trajectories of Sharing Bikes
Creators: name: He, Tianfu
name: Bao, Jie
name: Li, Yexin
name: He, Hui
name: Zheng, Yu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Databases (cs.DB)
subject: Information Retrieval (cs.IR)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Illegal vehicle parking is a common urban problem faced by major cities in the world, as it incurs traffic jams, which lead to air pollution and traffic accidents. The government highly relies on active human efforts to detect illegal parking events. However, such an approach is extremely ineffective to cover a large city since the police have to patrol over the entire city roads. The massive and high-quality sharing bike trajectories from Mobike offer us a unique opportunity to design a ubiquitous illegal parking detection approach, as most of the illegal parking events happen at curbsides and have significant impact on the bike users. The detection result can guide the patrol schedule, i.e. send the patrol policemen to the region with higher illegal parking risks, and further improve the patrol efficiency. Inspired by this idea, three main components are employed in the proposed framework: 1)~{\em trajectory pre-processing}, which filters outlier GPS points, performs map-matching, and builds trajectory indexes; 2)~{\em illegal parking detection}, which models the normal trajectories, extracts features from the evaluation trajectories, and utilizes a distribution test-based method to discover the illegal parking events; and 3)~{\em patrol scheduling}, which leverages the detection result as reference context, and models the scheduling task as a multi-agent reinforcement learning problem to guide the patrol police. Finally, extensive experiments are presented to validate the effectiveness of illegal parking detection, as well as the improvement of patrol efficiency.
Electroproduction of Soft Pions at Large Momentum Transfers
Creators: name: Braun, V. M.
name: Ivanov, D. Yu.
name: Peters, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We consider pion electroproduction on a proton target close to threshold for Q^2 in the region 1-10 GeV^2. The momentum transfer dependence of the S-wave multipoles at threshold, E_{0+} and L_{0+}, is calculated using light-cone sum rules.
description: 8 pages, 3 figures; Invited talk at the workshop on Exclusive Reactions at High Momentum Transfer, 21-24 May 2007, Newport News, Virginia, U.S.A. and International Conference on hadron Physics TROIA'07, 30 Aug. - 3 Sept. 2007, Canakkale, Turkey
METHOD DEVELOPMENT AND VALIDATION OF SIMULTANEOUS ESTIMATION OF BUDESONIDE, FORMOTEROL FUMARATE BY USING RP-HPLC
Creators: name: M. Prathibha *, B. Sravanthi , Dr.G.Vijaya Kumar
Publisher: name: Zenodo
Year: 2023

description: A new, simple, precise, rapid, selective and stability reversed-phase high performance liquid chromatographic (RP-HPLC) method has been developed and validated for the simultaneous quantification of Budesonide and Formoterol Fumarate in pure form and its pharmaceutical dosage form. The method is based on Phenomenex Gemini C18 (4.6×250mm) 5µ column. The separation is achieved using isocratic elution by Methanol: TEA Buffer in the ratio of 65:35% v/v, pumped at flow rate 1.0mL/min and UV detection at 230nm. The column is maintained at 40°C throughout the analysis. The total run time is about 6min. The method is validated for specificity, accuracy, precision and linearity, robustness and ruggedness, system suitability, limit of detection and limit of quantitation as per International conference of harmonization (ICH) Guidelines. The method is accurate and linear for quantification of Budesonide and Formoterol Fumarate between 10 - 50µg/mL and 20 - 100µg/mL respectively. Further, satisfactory results are also established in terms of mean percent- age recovery (100.37% for Budesonide and 100.34% for Formoterol Fumarate, intra-day and inter-day precision (<2%) and robustness. The advantages of this method are good resolution with sharper peaks and sufficient precision. The results indicate that the method is suitable for the routine quality control testing of marketed tablet formulations.

Keywords: Budesonide and Formoterol Fumarate, RP-HPLC, ICH Guidelines, Accuracy, Precision.
Kinetic terms in warped compactifications
Creators: name: Douglas, Michael R.
name: Torroba, Gonzalo
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop formalism for computing the kinetic terms of 4d fields in string compactifications, particularly with warping. With the help of the Hamiltonian approach, we identify a gauge dependent inner product on the compactification manifold which depends on the warp factor. It is shown that kinetic terms are associated to the minimum value of the inner product over each gauge orbit. We work out the kinetic term for the complex modulus of a deformed conifold with flux, i.e. the Klebanov-Strassler solution embedded in a compact Calabi-Yau manifold. Earlier results of a power-like divergence are confirmed qualitatively (the kinetic term does contain the main effect of warping) but not quantitatively (the correct results differ by an order one coefficient).
description: 24 pages; reference added, typos corrected
Laser cooling of unbound atoms in nondissipative optical lattices
Creators: name: Matveeva, N. A.
name: Taichenachev, A. V.
name: Tumaikin, A. M.
name: Yudin, V. I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The semiclassical theory of laser cooling is applied for the analysis of cooling of unbound atoms with the values of the ground and exited state angular moments 1/2 in a one-dimensional nondissipative optical lattice. We show that in the low-saturation limit with respect to the pumping field a qualitative interpretation of the cooling mechanisms can be made by the consideration of effective two-level system of the ground-state sublevels. It is clarified that in the limit of weak Raman transitions the cooling mechanism is similar to the Doppler mechanism, which is known in the theory of two-level atom. In the limit of strong Raman transitions the cooling mechanism is similar to the known Sisyphus mechanism. In the slow atom approximation the analytical expressions for the coefficients of friction, spontaneous and induced diffusion are given, and the kinetic temperature is estimated.
description: 18 pages, 7 figures
Monte Carlo simulation method for Laughlin-like states in a disk geometry
Creators: name: Ciftja, Orion
name: Wexler, Carlos
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We discuss an alternative accurate Monte Carlo method to calculate the ground-state energy and related quantities for Laughlin states of the fractional quantum Hall effect in a disk geometry. This alternative approach allows us to obtain accurate bulk regime (thermodynamic limit) values for various quantities from Monte Carlo simulations with a small number of particles (much smaller than that needed with standard Monte Carlo approaches).
description: 13 pages, 6 figures, 2 tables
The Analysis of Beninese Secondary School Students’ English Composition Skills: A Step Towards the Development of a Beninese Learner Corpus
Creators: name: IFEDE CHALLA
Publisher: name: figshare
Year: 2021
Subjects: subject: 200401 Applied Linguistics and Educational Linguistics
subject: FOS: Languages and literature
subject: 200301 Early English Languages
subject: 200302 English Language
subject: 200303 English as a Second Language
subject: 200526 Stylistics and Textual Analysis

description: This paper investigates Beninese EFL students' writing abilities, using the Corpus Data with three application software (Word Level Checker, AntConc, and Paper Rater) to analyze them. A problematic issue in Beninese EFL classes is the students’ lack of academic writing skills. For instance, negative language transfer, the lack of vocabulary, grammar, to mention a few, often mislead them a lot. Also, most Beninese EFL teachers find it challenging to incorporate large numbers of writing assignments in their lessons plan, mainly because of the effort and time required to evaluate them. As a result, most EFL learners hardly develop their ability to convey information through text writing. In this paper, unlike the traditional ways of evaluating students' writing abilities, the researcher uses the Corpus Data to analyze them. The description focuses on the kinds of errors learners make and how these errors change over time by comparing the 10th Grade students' writing to those of the 13th Grade students. The results show that Beninese EFL learners use low-level vocabulary than expected and excessive short length sentences. The keyword list analysis, combined with the grammar check, reveals that most respondents overuse articles and personal pronouns while misusing the plural in their writing. Another significant finding is that the 10th Grade students demonstrate less accuracy than the 13th Grade students by overusing the passive voice. This paper eventually suggests some operational solutions to improve Beninese EFL learners’ writing ability.
Phase transitions in tensorial group field theories: Landau-Ginzburg analysis of models with both local and non-local degrees of freedom
Creators: name: Marchetti, Luca
name: Oriti, Daniele
name: Pithis, Andreas G. A.
name: Thürigen, Johannes
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the tensorial group field theory approach to quantum gravity, the theory is based on discrete building blocks and continuum spacetime is expected to emerge from their collective dynamics, possibly at criticality, via a phase transition. On a compact group of fixed volume this can be expected to be only possible in a large-volume or thermodynamic limit. Here we show how phase transitions are possible in TGFTs in two cases: a) considering the non-local group degrees of freedom on a non-compact Lie group instead of a compact one (or taking a large-volume limit of a compact group); b) in models including $\mathbb{R}$-valued local degrees of freedom (that can be interpreted as discrete scalar fields, often used in this context to provide a matter reference frame). After adapting the Landau-Ginzburg approach to this setting of mixed local/non-local degrees of freedom, we determine the critical dimension beyond which there is a Gaussian fixed point and a continuous phase transition which can be described by mean-field theory. This is an important step towards the realization of a phase transition to continuum spacetime in realistic TGFT models for quantum gravity.
description: 27+7 pages; v2 closest to published version
Contact mechanics with adhesion: Interfacial separation and contact area
Creators: name: Yang, C.
name: Persson, B. N. J.
name: Israelachvili, J.
name: Rosenberg, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the adhesive contact between elastic solids with randomly rough, self affine fractal surfaces. We present molecular dynamics (MD) simulation results for the interfacial stress distribution and the wall-wall separation. We compare the MD results for the relative contact area and the average interfacial separation, with the prediction of the contact mechanics theory of Persson. We find good agreement between theory and the simulation results. We apply the theory to the system studied by Benz et al. involving polymer in contact with polymer, but in this case the adhesion gives only a small modification of the interfacial separation as a function of the squeezing pressure.
description: 5 pages, 4 figures
Invertibility conditions for field transformations with derivatives: toward extensions of disformal transformation with higher derivatives
Creators: name: Babichev, Eugeny
name: Izumi, Keisuke
name: Tanahashi, Norihiro
name: Yamaguchi, Masahide
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We discuss a field transformation from fields $ψ_a$ to other fields $ϕ_i$ that involves derivatives, $ϕ_i = \bar ϕ_i(ψ_a, \partial_αψ_a, \ldots ;x^μ)$, and derive conditions for this transformation to be invertible, primarily focusing on the simplest case that the transformation maps between a pair of two fields and involves up to their first derivatives. General field transformation of this type changes number of degrees of freedom, hence for the transformation to be invertible, it must satisfy certain degeneracy conditions so that additional degrees of freedom do not appear. Our derivation of necessary and sufficient conditions for invertible transformation is based on the method of characteristics, which is used to count the number of independent solutions of a given differential equation. As applications of the invertibility conditions, we show some non-trivial examples of the invertible field transformations with derivatives, and also give a rigorous proof that a simple extension of the disformal transformation involving a second derivative of the scalar field is not invertible.
description: 38 pages. v2: typos corrected, published version
One-Loop Riemann Surfaces in Schnabl Gauge
Creators: name: Kiermaier, Michael
name: Zwiebach, Barton
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Due to a peculiar behavior at the open string midpoint, loop diagrams in Schnabl gauge were expected to fail to produce the relevant closed string moduli. We find that closed string moduli are generated because the Riemann surfaces are built with slanted wedges: semi-infinite strips whose edges have parameterizations related by scaling. We examine in detail one-loop string diagrams and find that the closed string modulus is always produced. Moreover, the conformal maps simplify so greatly that both closed and open moduli become simple calculable functions of the Schwinger parameters, a simplification that occurs neither in Siegel gauge nor in light-cone gauge.
description: 65 pages, 18 figures, LaTeX2e
Long-term AGILE monitoring of the puzzling gamma-ray source 3EG J1835+5918
Creators: name: Bulgarelli, A.
name: Tavani, M.
name: Caraveo, P.
name: Chen, A. W.
name: Gianotti, F.
name: Trifoglio, M.
name: Marelli, M.
name: Argan, A.
name: Barbiellini, G.
name: Boffelli, F.
name: Cattaneo, P. W.
name: Cocco, V.
name: Costa, E.
name: D'Ammando, F.
name: Del Monte, E.
name: De Paris, G.
name: Di Cocco, G.
name: Donnarumma, I.
name: Evangelista, Y.
name: Feroci, M.
name: Fiorini, M.
name: Froysland, T.
name: Fuschino, F.
name: Galli, M.
name: Giuliani, A.
name: Labanti, C.
name: Lapshov, I.
name: Lazzarotto, F.
name: Lipari, P.
name: Longo, F.
name: Marisaldi, M.
name: Mereghetti, S.
name: Morselli, A.
name: Pacciani, L.
name: Pellizzoni, A.
name: Perotti, F.
name: Piano, G.
name: Picozza, P.
name: Prest, M.
name: Pucella, G.
name: Rapisarda, M.
name: Rappoldi, A.
name: Soffitta, P.
name: Trois, A.
name: Vallazza, E.
name: Vercellone, S.
name: Vittorini, V.
name: Zambra, A.
name: Zanello, D.
name: Giommi, P.
name: Pittoril, C.
name: Verrecchia, F.
name: Santolamazza, P.
name: Gasparrini, D.
name: Cutini, S.
name: Colafrancesco, S.
name: Salotti, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the AGILE gamma-ray observations of the field containing the puzzling gamma-ray source 3EG J1835+5918. This source is one of the most remarkable unidentified EGRET sources. An unprecedentedly long AGILE monitoring of this source yields important information on the positional error box, flux evolution, and spectrum. 3EG J1835+5918 has been in the AGILE field of view several times in 2007 and 2008 for a total observing time of 138 days from 2007 Sept 04 to 2008 June 30 encompassing several weeks of continuous coverage. With an exposure time approximately twice that of EGRET, AGILE confirms the existence of a prominent gamma-ray source (AGL J1836+5926) at a position consistent with that of EGRET, although with a remarkably lower average flux value for photon energies greater than 100 MeV. A 5-day bin temporal analysis of the whole data set of AGL J1836+5926 shows some evidence for variability of the gamma-ray flux. The source spectrum between 100 MeV and 1 GeV can be fitted with a power law with photon index in the range 1.6-1.7, fully consistent with the EGRET value. The faint X-ray source RX J1836.2+5925 that has been proposed as a possible counterpart of 3EG J1835+5918 is well within the AGILE error box. Future continuous monitoring (both by AGILE and GLAST) is needed to confirm the gamma-ray flux variability and to unveil the source origin, a subject that is currently being pursued through a multiwavelength search for counterparts.
description: accepted for publication by Astron. & Astrophys, 4 pages, 2 figures, 2 tables
On local mode analysis in multi-grid methods
Creators: name: Reimers, Mark Allan
Publisher: name: University of British Columbia
Year: 2010

description: Local Mode Analysis was introduced by Achi Brandt as a heuristic practical tool for determining the expected convergence rate of a Multi-Grid algorithm. It is shown that this tool may be justified rigorously. Furthermore, computations analogous to actual relaxation processes yield results much like Local Mode Analysis predictions. This analysis is also useful for a heuristic understanding of certain relaxations independently of the Multi-Grid context.
Thermodynamics of carbon point defects in hexagonal boron nitride
Creators: name: Maciaszek, Marek
name: Razinkovas, Lukas
name: Alkauskas, Audrius
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a first-principles computational study of the thermodynamics of carbon defects in hexagonal boron nitride (hBN). The defects considered are carbon monomers, dimers, trimers, and larger carbon clusters, as well as complexes of carbon with vacancies, antisites, and substitutional oxygen. Our calculations show that monomers ($\text{C}_{\text{B}}$, $\text{C}_{\text{B}}$), dimers, trimers, and $\text{C}_{\text{N}}\text{O}_{\text{N}}$ pairs are the most prevalent species under most growth conditions. Compared to these defects, larger carbon clusters, as well as complexes of carbon with vacancies and antisites, occur at much smaller concentrations. Our results are discussed in view of the relevance of carbon defects in single-photon emission in hBN.
description: 13 pages, 6 figures and supplemental material
High-quality strong lens candidates in the final Kilo Degree survey footprint
Creators: name: Li, R.
name: Napolitano, N. R.
name: Spiniello, C.
name: Tortora, C.
name: Kuijken, K.
name: Koopmans, L. V. E.
name: Schneider, P.
name: Getman, F.
name: Xie, L.
name: Long, L.
name: Shu, W.
name: Vernardos, G.
name: Huang, Z.
name: Covone, G.
name: Dvornik, A.
name: Heymans, C.
name: Hildebrandt, H.
name: Radovich, M.
name: Wright, A. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present 97 new high-quality strong lensing candidates found in the final $\sim 350\,\rm deg^2$, that completed the full $\sim 1350\,\rm deg^2$ area of the Kilo-Degree Survey (KiDS). Together with our previous findings, the final list of high-quality candidates from KiDS sums up to 268 systems. The new sample is assembled using a new Convolutional Neural Network (CNN) classifier applied to $r$-band (best seeing) and $g,~r,~i$ color-composited images separately. This optimizes the complementarity of the morphology and color information on the identification of strong lensing candidates. We apply the new classifiers to a sample of luminous red galaxies (LRGs) and a sample of bright galaxies (BGs) and select candidates that received a high probability to be a lens from the CNN ($P_{\rm CNN}$). In particular, setting $P_{\rm CNN}>0.8$ for the LRGs, the $1$-band CNN predicts 1213 candidates, while the $3$-band classifier yields 1299 candidates, with only $\sim$30\% overlap. For the BGs, in order to minimize the false positives, we adopt a more conservative threshold, $P_{\rm CNN} >0.9$, for both CNN classifiers. This results in 3740 newly selected objects. The candidates from the two samples are visually inspected by 7 co-authors to finally select 97 "high-quality" lens candidates which received mean scores larger than 6 (on a scale from 0 to 10). We finally discuss the effect of the seeing on the accuracy of CNN classification and possible avenues to increase the efficiency of multi-band classifiers, in preparation of next-generation surveys from ground and space.
description: Published by APJ