cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multi-Label Noise Robust Collaborative Learning for Remote Sensing Image Classification
Creators: name: Aksoy, Ahmet Kerem
name: Ravanbakhsh, Mahdyar
name: Demir, Begüm
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The development of accurate methods for multi-label classification (MLC) of remote sensing (RS) images is one of the most important research topics in RS. The MLC methods based on convolutional neural networks (CNNs) have shown strong performance gains in RS. However, they usually require a high number of reliable training images annotated with multiple land-cover class labels. Collecting such data is time-consuming and costly. To address this problem, the publicly available thematic products, which can include noisy labels, can be used to annotate RS images with zero-labeling cost. However, multi-label noise (which can be associated with wrong and missing label annotations) can distort the learning process of the MLC methods. To address this problem, we propose a novel multi-label noise robust collaborative learning (RCML) method to alleviate the negative effects of multi-label noise during the training phase of a CNN model. RCML identifies, ranks and excludes noisy multi-labels in RS images based on three main modules: 1) the discrepancy module; 2) the group lasso module; and 3) the swap module. The discrepancy module ensures that the two networks learn diverse features, while producing the same predictions. The task of the group lasso module is to detect the potentially noisy labels assigned to multi-labeled training images, while the swap module is devoted to exchange the ranking information between two networks. Unlike the existing methods that make assumptions about noise distribution, our proposed RCML does not make any prior assumption about the type of noise in the training set. The experiments conducted on two multi-label RS image archives confirm the robustness of the proposed RCML under extreme multi-label noise rates. Our code is publicly available at: http://www.noisy-labels-in-rs.org
description: Our code is publicly available at: http://www.noisy-labels-in-rs.org
Analyzing the Local Basis Set Superposition Error -- a case study of CO adsorption on rutile(110)
Creators: name: Dononelli, Wilke
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The aim of this letter is to introduce a new method to analyze the local basis set superposition error (LBSSE) using local counterpoise corrections (CP) in order to converge a basis set for a given compound. Using this approach, we are able to define a basis set composition for a CO molecule adsorbed on rutile(110), which can be regarded as complete. In addition to a new LBSSE analysis, adsorption energies of CO on rutile(110) at the MP2 and CCSD level of theory are presented.
Tracking Black Holes in Numerical Relativity
Creators: name: Caveny, Scott A.
name: Anderson, Matthew
name: Matzner, Richard A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This work addresses and solves the problem of generically tracking black hole event horizons in computational simulation of black hole interactions. Solutions of the hyperbolic eikonal equation, solved on a curved spacetime manifold containing black hole sources, are employed in development of a robust tracking method capable of continuously monitoring arbitrary changes of topology in the event horizon, as well as arbitrary numbers of gravitational sources. The method makes use of continuous families of level set viscosity solutions of the eikonal equation with identification of the black hole event horizon obtained by the signature feature of discontinuity formation in the eikonal's solution. The method is employed in the analysis of the event horizon for the asymmetric merger in a binary black hole system. In this first such three dimensional analysis, we establish both qualitative and quantitative physics for the asymmetric collision; including: 1. Bounds on the topology of the throat connecting the holes following merger, 2. Time of merger, and 3. Continuous accounting for the surface of section areas of the black hole sources.
description: 14 pages, 16 figures
LOREN: Logic-Regularized Reasoning for Interpretable Fact Verification
Creators: name: Chen, Jiangjie
name: Bao, Qiaoben
name: Sun, Changzhi
name: Zhang, Xinbo
name: Chen, Jiaze
name: Zhou, Hao
name: Xiao, Yanghua
name: Li, Lei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Given a natural language statement, how to verify its veracity against a large-scale textual knowledge source like Wikipedia? Most existing neural models make predictions without giving clues about which part of a false claim goes wrong. In this paper, we propose LOREN, an approach for interpretable fact verification. We decompose the verification of the whole claim at phrase-level, where the veracity of the phrases serves as explanations and can be aggregated into the final verdict according to logical rules. The key insight of LOREN is to represent claim phrase veracity as three-valued latent variables, which are regularized by aggregation logical rules. The final claim verification is based on all latent variables. Thus, LOREN enjoys the additional benefit of interpretability -- it is easy to explain how it reaches certain results with claim phrase veracity. Experiments on a public fact verification benchmark show that LOREN is competitive against previous approaches while enjoying the merit of faithful and accurate interpretability. The resources of LOREN are available at: https://github.com/jiangjiechen/LOREN.
description: Accepted to AAAI 2022
On an Observer-Related Unequivalence Between Spatial Dimensions of a Generic Cremonian Universe
Creators: name: Saniga, Metod
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Given a generic Cremonian space-time, its three spatial dimensions are shown to exhibit an intriguing, "two-plus-one" partition with respect to standard observers. Such observers are found to form three distinct, disjoint groups based on which one out of the three dimensions stands away from the other two. These two subject-related properties have, to our knowledge, no analogue in any of the existing physical theories of space-time.
description: 4 pages, no figures, submitted to CSF
Unitary Quantum Physics with Time-Space Noncommutativity
Creators: name: Balachandran, A. P.
name: Govindarajan, T. R.
name: Molina, C.
name: Teotonio-Sobrinho, P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this work quantum physics in noncommutative spacetime is developed. It is based on the work of Doplicher et al. which allows for time-space noncommutativity. The Moyal plane is treated in detail. In the context of noncommutative quantum mechanics, some important points are explored, such as the formal construction of the theory, symmetries, causality, simultaneity and observables. The dynamics generated by a noncommutative Schrodinger equation is studied. We prove in particular the following: suppose the Hamiltonian of a quantum mechanical particle on spacetime has no explicit time dependence, and the spatial coordinates commute in its noncommutative form (the only noncommutativity being between time and a space coordinate). Then the commutative and noncommutative versions of the Hamiltonian have identical spectra.
description: 18 pages, published version
Spectral Dependence of CMB Polarization and Parity
Creators: name: Balaji, K. R. S.
name: Brandenberger, Robert H.
name: Easson, Damien A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The polarization of the cosmic microwave background radiation (CMBR) can serve as a probe for nonstandard parity violating interactions. Many such interactions are predicted in particle physics models arising from theories with extra dimensions such as superstring theory. These interactions produce an optical activity that depends on the space-time nature of the parity violating field. In particular, it is possible to obtain a frequency-dependent differential rotation of the polarization axis. The form of the frequency dependence is sensitive to the time evolution of the parity odd background field. Thus, one may be able to study a broad class of parity violating operators through polarization measurements of the CMBR.
description: 6 pages; Uses REVTeX 4; reference added; version to appear in JCAP
Magnetic phase shifter for superconducting qubit
Creators: name: Golubovic, D. S.
name: Pogosov, W. V.
name: Morelle, M.
name: Moshchalkov, V. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have designed and investigated a contactless magnetic phase shifter for flux-based superconducting qubits. The phase shifter is realized by placing a perpendicularly magnetized dot at the centre of a superconducting loop. The flux generated by this magnetic dot gives rise to an additional shielding current in the loop, which, in turn, induces a phase shift. By modifying the parameters of the dot an arbitrary phase shift can be generated in the loop. This magnetic phase shifter can, therefore, be used as an external current source in superconducting circuits, as well as a suitable tool to study fractional Josephson vortices.
description: to be published in Physical Review Letters
The stellar velocity distribution in the solar neighbourhood
Creators: name: De Simone, Richard S.
name: Wu, Xiaoan
name: Tremaine, Scott
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore the heating of the velocity distribution in the solar neighbourhood by stochastic spiral waves. Our investigation is based on direct numerical integration of initially circular test-particle orbits in the sheared sheet. We confirm the conclusion of other investigators that heating by spiral structure can explain the principal features of the age-velocity dispersion relation and other parameters of the velocity distribution in the solar neighbourhood. In addition, we find that heating by strong transient spirals can naturally explain the presence of small-scale structure in the velocity distribution (``moving groups''). Heating by spiral structure also explains why the stars in a single velocity-space moving group have a wide range of ages, a result which is difficult to understand in the traditional model that these structures result from inhomogeneous star formation. Thus we suggest that old moving groups arise from irregularities in the Galactic potential rather than irregularities in the star-formation rate.
description: Accepted by MNRAS for publication; 20 pages, 11 figures, mn2e.cls
Optical and near-IR observations of SN 1998bw
Creators: name: Patat, Ferdinando
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: SN 1998bw, especially after the discovery of GRB 030329/SN 2003dh, seems to be the equivalent of the Rosetta stone for the SN/GRB connection. In this paper I review optical and near IR observations that have been carried out for this uncanny object, which has probably confirmed suspicions and ideas originally formulated in the early seventies of last century.
description: 9 pages, 7 figures. Invited review to the IAU Colloquium n. 192, SUPERNOVAE: ten years of SN 1993J, Valencia (Spain)
AFG'ONISTON O'ZBEKLARI TILIDA FE’L MAYLLARI HAQIDA BA’ZI MULOHOZALAR
Creators: name: Ziayee Amanullah Aghai
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Fe’l
zamon
shaxs-son
kategoriya
mayl
habar mayli
shart mayli
buruq-istak mayli

description: O’zbek tilida fe’l mayllari masalasi ancha keng o’rganilgan va bu haqida qator ishlar e’lon qilingan. Shunga qaramasdan bu sohada hali o’z ifodasini topmagan masalalar ham oz emas. Jumladan, boshqa davlatlarda yashayotgan o’zbeklar tilida fe’lning mayl turlari va ularning nomlanishi masalasida tilshunoslarning biror tadqiqot qilganligini kuzatilmaydi. Ushbu maqolada shu haqida ayrim masalalarga to’xtalib o’tamiz
Toward the Pole
Creators: name: Alekseev, Sergey
name: Gorsky, Alexander
name: Litvinov, Mikhail
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the analytic structure of semiclassical conformal blocks, namely of the 1-point conformal block on the torus and of the 4-point conformal block on the sphere, as functions of the intermediate dimension. We interpret their discontinuities, which can be revealed with the use of a particular resummation procedure, holographically in terms of configurations of geodesics in AdS3. In other words, we study the behavior of the $Ω$-deformed $\mathcal N=2$ SYM theory in the Nekrasov-Shatashvili limit near those singular points, where naively the W-boson with non-vanishing angular momentum becomes massless. Upon a proper resummation of instanton contributions, these singularities disappear, which is similar to the Seiberg-Witten solution in the undeformed case where there is no massless W-boson. It is shown that the order parameter undergoes a non-analytic behavior near positions of the poles. The jump of the order parameter is interpreted holographically in terms of geodesic networks
description: 29 pages, 7 figures
French immersion students' perceptions towards reading in French
Creators: name: McClellan, Katherine A.
Publisher: name: The University of British Columbia
Year: 2014

description: When learning a second language, the ability to read in that language is an important skill as it allows students to become aware of language structures, vocabulary, as well as to promote the culture behind the second language. Research into second language acquisition has shown that vocabulary growth does occur through reading activities. However, students in French immersion programs, learning a second language in their daily schooling, are resistant to reading in French. This study investigated the preferences of intermediate French immersion students in regards to reading in French, as well as the reasons behind their attitudes and the titles/genres of French books that they have enjoyed in the past. A questionnaire using Likert-scale and open-ended questions was developed around questions pertaining to students' perceptions towards reading in French and English, their reasons for reading in one language over the other, and their favourite genres and titles of books. Fifty-two students in grade seven early and late French immersion classrooms responded to the survey. The participants indicated that they preferred reading in English to reading in French and they read very seldomly in French at home. They found that the plots in French books were more difficult to relate to, and that when the language in a French novel was at a level they could understand, the books were often conceptually too simple for them. However, all students were able to share the genres they prefer when reading in French, with fantasy novels the most popular choice of novel, and many students listed the title of one or more French book that they remembered enjoying. Although French immersion students are resistant to reading in French, teachers may use teaching strategies and classroom programs that will promote reading in French, in order to increase student success in the French immersion program.
Thick MgB2 film with (101) oriented micro-crystals
Creators: name: Chen, Chinping
name: Wang, Xinfeng
name: Lu, Ying
name: Jia, Zhang
name: Guo, Jing-pu
name: Wang, Xiao-nan
name: Zhu, Meng
name: Xu, Xiangyu
name: Xu, Jun
name: Feng, Qing-rong
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Very thick, ~ 40 $μ$m, clean, and highly textured MgB2 film was effectively grown on an Al2O3 substrate. The fabrication technique is by the hybrid physical-chemical vapor deposition (HPCVD) using B2H6 gas and Mg ingot as the sources. The X-ray diffraction (XRD) analysis shows a highly (101)-oriented MgB2 crystal structure without any impurity detected. There is no signal from the substrate in the XRD spectrum, indicating that the film thickness exceeds the X-ray penetration length. Scanning electron microscopy (SEM) reveals that the film is composed of highly-packed MgB2 micro-crystals with a uniform size distribution of about 2 $μ$m in diameter and 0.2 $μ$m in thickness. According to the compositional analysis of energy-dispersive X-ray spectroscopy (EDX), no oxygen, hence no MgO, exists in the textured film, consistent with the XRD result. Also, the transport properties are similar to those of a single crystal, indicating a clean film of good crystallite. The zero field transition temperatures are determined as TC(onset) = 39.2 K and TC(zero) = 38.4 K, giving a sharp transition typical of a clean sample. The residual resistivity ratio (RRR) is determined as 6.4 and the magnetoreisitance (MR) is about 28 % at 40 K under the applied field of 9 T, which are similar to those of a single crystal. The zero temperature upper critical field, HC2(0), is extrapolated as 19 T from the TC(onset) at applied field up to 9 T.
description: 10 pages, 4 figures
ТАЪЛИМ ТИЗИМИ САМАРАДОРЛИГИНИ ОШИРИШДА МУСТАҚИЛ ТАЪЛИМНИНГ ЎРНИ
Creators: name: Шахноза Хайитова
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: мустақил таълим
мустақил фаолият
мустақил иш
олий таълим
натижа
анализ
тажриба
таълим тизими
узлуксизлик
талаба

description: Талабаларнинг мустақил таълим фаолиятини ташкил қилишда алоҳида ѐндашувни амалга ошириш муҳим аҳамиятга эга, бунда шахсий ѐндашув, кўпинча, таклиф этилган вазифалар мазмуни орқали танлов асосида амалга оширилади. Ушбу мақолада муаллиф томонидан бугунги кунда олий таълим муассасалари талабалари мустақил таълим олиш орқали таълим самарадорлигини ошириш, уларнинг билиш қобилиятларини ривожлантириш борасида фикр юритилган
Canonical description for formulation of embedding gravity as a field theory in a flat spacetime
Creators: name: Paston, S. A.
name: Semenova, E. N.
name: Sheykin, A. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the approach to gravity in which four-dimensional curved spacetime is represented by a surface in a flat Minkowski space of higher dimension. After a short overview of the ideas and results of such an approach we concentrate on the study of the so-called splitting gravity, a form of this description in which constant value surface of a set of scalar fields in the ambient flat space-time defines the embedded surface. We construct a form of action which is invariant w.r.t. all symmetries of this theory. We construct the canonical formalism for splitting gravity. The resulting theory turns out to be free of constraints. However, the Hamiltonian of this theory is an implicit function of canonical variables. Finally, we discuss the path integral quantization of such a theory.
description: 16 pages
Comments on tails in Schwarzschild spacetimes
Creators: name: Karkowski, Janusz
name: Swierczynski, Zdobyslaw
name: Malec, Edward
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We performed a careful numerical analysis of the late tail behaviour of waves propagating in the Schwarzschild spacetime. Specifically the scalar monopole, the electromagnetic dipole and the gravitational axial quadrupole waves have been investigated. The obtained results agree with a falloff $1/t^{2l+3}$ for the general initial data and $1/t^{2l+4}$ for the initially static data.
description: Introduction expanded, references added, misprints corrected. To appear in CQG
Lectures on the Swampland Program in String Compactifications
Creators: name: van Beest, Marieke
name: Calderón-Infante, José
name: Mirfendereski, Delaram
name: Valenzuela, Irene
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Swampland program aims to determine the constraints that an effective field theory must satisfy to be consistent with a UV embedding in a quantum gravity theory. Different proposals have been formulated in the form of Swampland conjectures. In these lecture notes, we provide a pedagogical introduction to the most important Swampland conjectures, their connections and their realization in string theory compactifications. The notes are based on the series of lectures given by Irene Valenzuela at the online QFT and Geometry summer school in July 2020.
description: 71 pages, 27 figures; v2: typos corrected, references added
TESTING FOR THE IMPACT OF INFLATION ON IMPORT DEMAND FUNCTIONS
Creators: name: Arnade, Carlos
name: Dixit, Praveen
name: Arnade, Carlos
name: Dixit, Praveen
Publisher: name: Unknown
Year: 1989
Subjects: subject: Demand and Price Analysis
subject: International Relations/Trade
subject: Import demands
subject: zero homogeneity
subject: money illusion
subject: elasticity

description: This paper questions the standard assumption that inflation has no effect on import demand functions. We describe a simple method for testing whether proportionate changes in prices and income influence import demands. We estimate several import demand functions and provide, some evidence that inflation influences importers' demand. We also show that, when estimating import demand functions, it is difficult to test for the correct index of inflation.
Extraction of Plumes in Turbulent Thermal Convection
Creators: name: Ching, Emily S. C.
name: Guo, H.
name: Shang, Xiao-Dong
name: Tong, P.
name: Xia, Ke-Qing
Publisher: name: arXiv
Year: 2003
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We present a scheme to extract information about plumes, a prominent coherent structure in turbulent thermal convection, from simultaneous local velocity and temperature measurements. Using this scheme, we study the temperature dependence of the plume velocity and understand the results using the equations of motion. We further obtain the average local heat flux in the vertical direction at the cell center. Our result shows that heat is not mainly transported through the central region but instead through the regions near the sidewalls of the convection cell.
description: 4 pages, 4 figures, submitted to Physical Review Letters
UMUMTA'LIM MAKTABLARIDA BOTANIKA FANINI O'QITISH UCHUN ELEKTRON RESUSLARNI QO'LLASH
Creators: name: Voxid Baxromovich Fayziev
name: Shonazarova, Nasiba Ibragimovna
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: dasturiy-elektron vositalar (elektron resurslar)
glossariy
Pisa test

description: Маzkur maqola umumta‘lim maktablarida botanika fanini o‗qitish uchun zarur elektron resurslar (elektron kompleks) yaratish, yaratilgan elektron resursni dars jarayonida qo‗llash va uning ta‘lim samaradorligini oshirishdagi ahamiyatiga bag‘ishlangan. Shu bilan bir qatorda ilmiy maqolada elektron resurslarning turlari, ularning ta‗lim tizimidagi roli va o‗quvchilar bilim darajasini oshirishdagi ahamiyati, zamonaviy ta‘limning innovatsion-axborot texnologiyalari asosida tashkil etiladigan dars tuzilmalari va shakllari yoritib berilgan
The role of the electric Bond number in the stability of pasta phases
Creators: name: Kubis, Sebastian
name: Wójcik, Włodzimierz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The stability of pasta phases in cylindrical and spherical Wigner-Seitz (W-S) cells is examined. The electric Bond number is introduced as the ratio of electric and surface energies. In the case of a charged rod in vacuum, other kinds of instabilities appear in addition to the well known Plateau- Rayleigh mode. For the case of a rod confined in a W-S cell the variety of unstable modes is reduced. It comes from the virial theorem, which bounds the value of the Bond number from above and reduces the role played by electric forces. A similar analysis is done for the spherical W-S cell, where it appears that the inclusion of the virial theorem stabilizes all of the modes.
description: 8 pages, 6 figures
From Euclid to BGL
Creators: name: Jenkovszky, László
Publisher: name: arXiv
Year: 2019
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: History and Overview (math.HO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The emergence of the new, non-Euclidean geometry of Bolyai, Gauss, and Lobachevskii (BGL) and its impact on modern sciences is the subject of a series of biennial conferences. Below, I briefly review the history.
description: 6 pages, 4 figures
SO’Z TURKUMLARI VA ULARNI MATN ASOSIDA TASNIFLASH MASALASI
Creators: name: Omidullah Bayani
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: So’z turkumlari
matn
tasniflash
so’z turkumlar soni
taraqqiyot boshqichi.

description: Ushbu maqolada so’z turkumlarini matn asosida tasniflash haqida so’z yuritilib, so’z turkumlarini tasniflashda 3 asosiy xususiyat (semantik, morfologik va sintaktik)ni nazarga tutgan holda, matn asosida ishlash va bu uslub ahamiyatini yoritishdir
The proof of Birman's conjecture on singular braid monoids
Creators: name: Paris, Luis
Publisher: name: arXiv
Year: 2003
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 20F36, 57M25. 57M27

description: Let B_n be the Artin braid group on n strings with standard generators sigma_1, ..., sigma_{n-1}, and let SB_n be the singular braid monoid with generators sigma_1^{+-1}, ..., sigma_{n-1}^{+-1}, tau_1, ..., tau_{n-1}. The desingularization map is the multiplicative homomorphism eta: SB_n --> Z[B_n] defined by eta(sigma_i^{+-1}) =_i^{+-1} and eta(tau_i) = sigma_i - sigma_i^{-1}, for 1 <= i <= n-1. The purpose of the present paper is to prove Birman's conjecture, namely, that the desingularization map eta is injective.
description: Published by Geometry and Topology at http://www.maths.warwick.ac.uk/gt/GTVol8/paper35.abs.html
title: Novel Roles for Matrix Metalloproteinases in Cell-Matrix Interactions
Creators: name: Messent, Anthea Jane
Publisher: name: The Open University
Year: 1998

description: The aim of this study was to elucidate the effect of type I collagen degradation by a physiological enzyme on cell-collagen interactions. Type I collagen is degraded in vivo by collagenases, which are members of the matrix metalloproteinase family of enzymes. The ability of HT1080 cells, which express the major cell-surface collagen receptor α2β1 integrin, to attach to and invade through collagenase-cleaved collagen was investigated in cell attachment and invasion assays in comparison with the intact molecule.

 Binding studies of purified, platelet α2β1 integrin, and of ligand-binding A domain of this integrin to native collagen and to purified 3/4 and 1/4 fragments of collagen, generated by collagenase-3 revealed the necessity for retention of the triple-helical conformation of the collagen fragments for α2β1 integrin binding. HT1080 cell attachment to type I collagen was α2β1 integrin-mediated, and collagenase-cleavage of type I collagen perturbed cell attachment via this integrin at physiological temperature. This is likely to be due to melting of the collagen fragments, destabilizing of the triple-helical conformation of type I collagen and the resultant loss of α2β1 integrin binding sites on the collagen molecules. However, cell attachment to the native collagen fragments was still possible at room temperature, indicating that collagenase does not destroy α2β1 integrin binding sites on type I collagen, and that attachment can occur below physiological temperature.

 HT1080 cell invasion assays through equivalent molar concentrations of native type I collagen and the 3/4 and 1/4 fragments of collagen revealed that HT 1080 cell invasion through both collagen fragments was significantly greater relative to cell invasion through native collagen. These results may reflect the decreased adhesion to heat-unwound collagen fragments seen in attachment assays.

 Collagenase degradation of type I collagen significantly alters α2β1 integrin-mediated cell interactions with collagen, and also results in increased cell invasion through the degraded substrate. Matrix metalloproteinases may thus have an important role in cell-collagen interactions during tumour invasion and metastasis, where upregulation of matrix metalloproteinase synthesis by tumour and stromal cells is often observed.
ИССЛЕДОВАНИЕ АКТИВНОГО УГЛЕРОДА, ИСПОЛЬЗУЕМОГО ДЛЯ ОЧИСТКИ МЕТИЛДИЕТАНОЛАМИНА ДО НИКЕЛ (II) ИОНА
Creators: name: Саидахон Бахромджон Кизи Убайдуллаева
name: Басит Набиевич Хомидов
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: ионы Ni (II)
адсорбент на активированном угле
использованный раствор МДЭА
реактив Чугаева
показатель pH

description: В этой статье описывается определение ионов Ni (II) в активированном угле, используемом для очистки MDEA-метилдиэтаноламина, основного агента для очистки конвертированного газа от диоксида углерода (CO2) при производстве аммиака
GraphACT: Accelerating GCN Training on CPU-FPGA Heterogeneous Platforms
Creators: name: Zeng, Hanqing
name: Prasanna, Viktor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Graph Convolutional Networks (GCNs) have emerged as the state-of-the-art deep learning model for representation learning on graphs. It is challenging to accelerate training of GCNs, due to (1) substantial and irregular data communication to propagate information within the graph, and (2) intensive computation to propagate information along the neural network layers. To address these challenges, we design a novel accelerator for training GCNs on CPU-FPGA heterogeneous systems, by incorporating multiple algorithm-architecture co-optimizations. We first analyze the computation and communication characteristics of various GCN training algorithms, and select a subgraph-based algorithm that is well suited for hardware execution. To optimize the feature propagation within subgraphs, we propose a lightweight pre-processing step based on a graph theoretic approach. Such pre-processing performed on the CPU significantly reduces the memory access requirements and the computation to be performed on the FPGA. To accelerate the weight update in GCN layers, we propose a systolic array based design for efficient parallelization. We integrate the above optimizations into a complete hardware pipeline, and analyze its load-balance and resource utilization by accurate performance modeling. We evaluate our design on a Xilinx Alveo U200 board hosted by a 40-core Xeon server. On three large graphs, we achieve an order of magnitude training speedup with negligible accuracy loss, compared with state-of-the-art implementation on a multi-core platform.
description: Published in ACM/SIGDA FPGA '20
The changing role of the teacher-librarian in the 21st century and an investigation of information literacy instruction practices in schools
Creators: name: Hunger, S. A.
Publisher: name: The University of British Columbia
Year: 2014

description: This paper examines the changing role of the teacher-librarian in the 21st century, and what focus the role is taking today. This paper also seeks to determine which information literacy skills teacher-librarians instruct in elementary and secondary schools and which techniques are successful for teaching these skills to students. The research shows that researchers are currently divided into four groups regarding what focus the role of the teacher-librarian should take. These groups emphasize the roles of leader. a promoter of a love of reading and lifelong learning, information literacy specialist, and guide. The literature also reveals that teacher-librarians instruct an extensive list of information literacy skills in schools. These skills fall into one of more of six main categories. To demonstrate a link between the research and my practice, I created a teaching unit that integrates science with the development of information literacy skills. The curriculum addresses many of the required Grade 7 student learning outcomes for information literacy.The traditional role of the teacher-librarian is evolving in the 21st century and he or she must adapt to the changing needs of the patrons in order to provide valuable services to them. Today's teacher-librarian needs to be an information and resource manager, a multimedia specialist, and an instructor of information literacy skills.
BOSHLANG’ICH SINF O’QUVCHILARIDA KREATIV QOBILIYATLARNI RIVOJLANTIRISHDA O’QITUVCHINING ROLI
Creators: name: To’rabekova, Aziza Mirzabek Qizi
name: Noila Nasim Qizi Abduraxmonova
name: Yusufaliyeva, Gulnora Abduraxmonovna
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: ta‟lim
metodika
tafakkur
kreativlik
belgi
mashq
fikrlash
ijodkorlik
erkinlik

description: Mazkur maqolada boshlang‟ich sinf o‟quvchilaridagi kreativ qobiliyatlarni rivojlantirish maqsadida foydalanish lozim o‟qituvchi vazifalari haqidagi kerakli ma‟lumotlar va manbalar keltirib o‟tilgan. Maqolada berilgan ma‟lumotlar asosida o‟qituvchilar va ota-onalar o‟zilari uchun kerakli tavsiyalarni olishlari mumkin
A rapidly evolving high-amplitude $δ$ Scuti star crossing the Hertzsprung Gap
Creators: name: Niu, Jia-Shu
name: Xue, Hui-Fang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this work, we report the discovery of the rapidly evolving high-amplitude $δ$ Scuti star KIC 6382916 (J19480292+4146558) which is crossing the Hertzsprung gap. According to the analysis of the archival data, we find three independent pulsation modes, whose amplitudes and frequencies vary distinctly in 4 years. The linear period variation rates of the first two modes are about 3-4 times larger than the best seismic model constructed by the standard evolution theory, while that of the third one is about 8 times larger than the first two modes. What is more interesting is that, almost all the combinations of the third mode have frequency peaks $0.0815\ \mathrm{c\ d}^{-1}$ away from them in the frequency domain. A framework is proposed to interpret the markedly large frequency and amplitude variation rates of the third mode, in which we employ a new pulsation mode (resonating integration mode) generated by the resonance between a radial p-mode and a nonradial mixed mode. Moreover, a global analysis of the interactions between the three independent pulsation modes and their harmonics/combinations is performed based on the interaction diagrams of their amplitudes and phases, which would be a useful tool for the future asteroseismology research.
description: 34 pages, 17 figures, 6 tables. ApJL published
Table Structure Extraction with Bi-directional Gated Recurrent Unit Networks
Creators: name: Khan, Saqib Ali
name: Khalid, Syed Muhammad Daniyal
name: Shahzad, Muhammad Ali
name: Shafait, Faisal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Tables present summarized and structured information to the reader, which makes table structure extraction an important part of document understanding applications. However, table structure identification is a hard problem not only because of the large variation in the table layouts and styles, but also owing to the variations in the page layouts and the noise contamination levels. A lot of research has been done to identify table structure, most of which is based on applying heuristics with the aid of optical character recognition (OCR) to hand pick layout features of the tables. These methods fail to generalize well because of the variations in the table layouts and the errors generated by OCR. In this paper, we have proposed a robust deep learning based approach to extract rows and columns from a detected table in document images with a high precision. In the proposed solution, the table images are first pre-processed and then fed to a bi-directional Recurrent Neural Network with Gated Recurrent Units (GRU) followed by a fully-connected layer with soft max activation. The network scans the images from top-to-bottom as well as left-to-right and classifies each input as either a row-separator or a column-separator. We have benchmarked our system on publicly available UNLV as well as ICDAR 2013 datasets on which it outperformed the state-of-the-art table structure extraction systems by a significant margin.
description: Proceedings of the 15th International Conference on Document Analysis and Recognition (ICDAR) 2019, Sydney, Australia
Congruence classes and maximal nonbases
Creators: name: Nathanson, Melvyn B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B13, 11B05, 11B34, 11B75, 11A07

description: The set $A$ is an asymptotic nonbasis of order $h$ for an additive abelian group $X$ if there are infinitely many elements of $X$ not in the $h$-fold sumset $hA$. For all $h \geq 2$, this paper constructs new classes of asymptotic nonbases of order $h$ for $\mathbf{Z}$ and for $\mathbf{N}_0$ that are not subsets of maximal asymptotic nonbases.
description: 10 pages; corrected a few minor typos
ЁШЛАРДА МАФКУРАВИЙ ИММУНИТЕТНИ ШАКЛЛАНТИРИШ ОМИЛЛАРИ
Creators: name: Мастура Юлдашева
name: Гулчеҳра Ғаффарова
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: мафкура
иммунитет
мафкуравий иммунитет
ѐшлар
маънавият
таълим
оила
қадрият
миллий қадрият

description: Бугун биз тез суръатлар билан ўзгариб бораѐтган, инсоният ҳозирга қадар бошидан кечирган даврлардан тубдан фарқ қиладиган ўта шиддатли ва мураккаб бир замонда яшамоқдамиз. Ушбу мақолада мафкуравий иммунитет тушунчасининг моҳияти ҳамда ѐшларда мафкуравий иммунитетни шакллантириш омиллари ѐритиб берилган
Final-State Condition And Dissipative Quantum Mechanics
Creators: name: Ho, Pei-Ming
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Unitarity demands that the black-hole final state (what remains inside the event horizon at complete evaporation) must be unique. Assuming a UV theory with infinitely many fields, we propose that the uniqueness of the final state can be achieved via a mechanism analogous to the quantum-mechanical description of dissipation.
description: 12 pages, LaTeX, 1 figure
Model for Spreading of Liquid Monolayers
Creators: name: Popescu, M. N.
name: Dietrich, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Manipulating fluids at the nanoscale within networks of channels or chemical lanes is a crucial challenge in developing small scale devices to be used in microreactors or chemical sensors. In this context, ultra-thin (i.e., monolayer) films, experimentally observed in spreading of nano-droplets or upon extraction from reservoirs in capillary rise geometries, represent an extreme limit which is of physical and technological relevance since the dynamics is governed solely by capillary forces. In this work we use kinetic Monte Carlo (KMC) simulations to analyze in detail a simple, but realistic model proposed by Burlatsky \textit{et al.} \cite{Burlatsky_prl96,Oshanin_jml} for the two-dimensional spreading on homogeneous substrates of a fluid monolayer which is extracted from a reservoir. Our simulations confirm the previously predicted time-dependence of the spreading, $X(t \to \infty) = A \sqrt t$, with $X(t)$ as the average position of the advancing edge at time $t$, and they reveal a non-trivial dependence of the prefactor $A$ on the strength $U_0$ of inter-particle attraction and on the fluid density $C_0$ at the reservoir as well as an $U_0$-dependent spatial structure of the density profile of the monolayer. The asymptotic density profile at long time and large spatial scale is carefully analyzed within the continuum limit. We show that including the effect of correlations in an effective manner into the standard mean-field description leads to predictions both for the value of the threshold interaction above which phase segregation occurs and for the density profiles in excellent agreement with KMC simulations results.
description: 21 pages, 9 figures, submitted to Phys. Rev. E
BIOGAZ QURILMASIDA SAMARADORLIKNI OSHIRISH UCHUN QO’SHIMCHA IMKONIYATLARDAN FOYDALANISH
Creators: name: Sh. Sh. Xudayberganov
name: K. R. Yakubov
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Go‟ngni mezofil usuli
termofil usuli
vodorod sulfid
biogas
quyosh energiyasi
qayta tiklanuvchi energiya
qattiq yoqilg„i

description: Ushbu maqolada biogaz qurilmasida samaradorlikni oshirish uchun qo‟shimcha imkoniyatlardan foydalanish masalasi keng tahlil qilingan. Bu masala bo‟yicha amaliy ahamiyatga ega bo‟lgan tadqiqot natijalariga ko‟ra tahlillar olibh borilgan. Bundan tashqari, ko‟pgina tadqiqotchilarning mulohazalari keltirilgan
Band Gap of Atomically Precise Graphene Nanoribbons as a Function of Ribbon Length and Termination
Creators: name: Talirz, Leopold
name: Söde, Hajo
name: Kawai, Shigeki
name: Ruffieux, Pascal
name: Meyer, Ernst
name: Feng, Xinliang
name: Müllen, Klaus
name: Fasel, Roman
name: Pignedoli, Carlo A.
name: Passerone, Daniele
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the band gap of finite $N_A=7$ armchair graphene nanoribbons (7-AGNRs) on Au(111) through scanning tunneling microscopy/spectroscopy combined with density functional theory calculations. The band gap of 7-AGNRs with lengths of 6 nm and more is converged to within 0.1 eV of its bulk value of 2.3 eV, while the band gap opens by several hundred meV in very short 7-AGNRs. The termination has a significant effect on the band gap, doubly hydrogenated termini yielding a lower band gap than singly hydrogenated ones.
description: Submitted version (preprint, pre-reviewing) to ChemPhysChem (An invited contribution to a Special issue on On-SurfaceSynthesis)
title: Spermatophore production and sperm utilisation in the smooth newt Triturus v vulgaris
Creators: name: Waights, Verina
Publisher: name: The Open University
Year: 1998

description: This study investigates spermatophore production and sperm utilisation in the smooth newt Triturus v. vulgaris. Chapter one outlines the natural history of the species and describes the physiology of reproduction and the sexual behaviour of male and female smooth newts. Chapter two describes the general methodology.

 Chapter three investigates the relationship between sperm accessory materials and spermatophore production. Spermatophore base height was correlated with male body size. The size of the glands that secrete the spermatophores was best predicted by body size, crest height and time post deposition.

 Chapter four determines the gametic strategies exhibited by males. Males may be optimising their spermatophore output by depositing spermatophores of similar size and sperm content, but production may be limited by the availability of sperm and sperm accessory materials.

 Chapter five examines the relationship between male body size and seasonal spermatophore production. Spermatophore production was correlated with body size, although crest height was the best predictor.

 Chapter six investigates sperm utilisation in females. Female smooth newts may require courtship as well as insemination to induce ovulation and they may need to remate during the season in order to lay a full clutch.

 Chapter seven investigates sperm utilisation due to polyspermy. Between 1 and 20 sperm may enter the ovum, although some ova were found to contain much higher numbers.

 Chapter eight discusses the results from the preceding chapters. Male reproductive success may be limited by spermatophore production and by females' utilisation of sperm. Female reproductive success is related to an individual's fecundity, but this study has shown that it may be also partly determined by the number of mates obtained and the timing of insemination. Mating patterns in smooth newts may be influenced by females' requirements for sperm as well as by males' seeking multiple mates to enhance their reproductive success.
$C^*$-algebraic approach to interacting quantum field theory: Inclusion of Fermi fields
Creators: name: Brunetti, Romeo
name: Dütsch, Michael
name: Fredenhagen, Klaus
name: Rejzner, Kasia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We extend the $C^*$-algebraic approach to interacting quantum field theory, proposed recently by Detlev Buchholz and one of us (KF) to Fermi fields. The crucial feature of our approach is the use of auxiliary Grassmann variables in a functorial way.
description: 25 pages
Erphaea pumicosa Erichson 1847
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Erphaea
Erphaea pumicosa

description: 1. Erphaea pumicosa Erichson, 1847
Type locality — Peru. (ZMHB). Distribution — Ecuador, Peru, Bolivia.
 Erphaea pumicosa Erichson, 1847: 144; Thomson, 1860: 365; 1864: 130; Lacordaire, 1872: 794; Martins & Monné, 1974b: 323, fig. 4 (syn.).
 Leptostylus saxuosus Tippmann, 1960: 189, pl. 11, fig. 26f.
Type locality — Bolivia, Chapare: Rio Chipiriri. (USNM).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553