cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Collection of Soil and Root Sample for Nematodes Extraction
Creators: name: Sanjeet Ojha, Sanjay Kharte, Jayant Bhatt and A.K. Jain
Publisher: name: The Science world a Monthly e magazine
Year: 2024

description: Nematode are typically small roundworms that can be found in almost all habitat. They reproduce sexually and they are having bilaterally symmetrical body. Many species are known parasites of humans.

·       Nematodes, also called roundworms, thread worms, are a large group of organisms belonging to the phylum Nematode.

·       Nematodes are the most abundant multicellular animals on earth and a diversified group in the animal kingdom that occurs worldwide in virtually every environment.

·       Nematodes are second only to insects in the number of species in the animal kingdom. However, only 3 percent of all nematode species have been studied and identified so far. One cubic meter of soil may contain millions of individual nematodes belonging to several different taxonomic groups.

·       Many nematode species are beneficial to agriculture and the environment. For example, some have proven to be important allies in the biological control of insects and other pests, and some contribute to soil fertility by helping cycle nutrients through the soil.
Good Wannier bases in Hilbert modules associated to topological insulators
Creators: name: Ludewig, Matthias
name: Thiang, Guo Chuan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Operator Algebras (math.OA)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: For a large class of physically relevant operators on a manifold with discrete group action, we prove general results on the (non-)existence of a basis of smooth well-localised Wannier functions for their spectral subspaces. This turns out to be equivalent to the freeness of a certain Hilbert module over the group $C^*$-algebra canonically associated to the spectral subspace. This brings into play $K$-theoretic methods and justifies their importance as invariants of topological insulators in physics.
description: 35 pages, 5 Figures, 1 Table. Revised version for publication in J. Math. Phys
title: CF-105 undercarriage
Creators: name: Burn, E.
name: Rossell, C.
name: Beanland, C.
Publisher: name: Avro Aircraft Limited (Canada). Engineering Division
Year: 1956
Subjects: subject: Avro Arrow
subject: Avro Arrow
subject: Avro Canada
subject: A.V. Roe Canada
subject: Avro Canada CF-105 Arrow
subject: CF-105
subject: Canada supersonic jet
subject: avion à réaction supersonique du Canada
subject: delta-winged supersonic interceptor
subject: intercepteur supersonique à ailes delta
subject: design and construction
subject: conception et construction

description: Distributed online by the National Research Council of Canada
description: Distribué en ligne par le Conseil national de recherches du Canada
An asymptotic expansion for a ratio of products of gamma functions
Creators: name: Buehring, Wolfgang
Publisher: name: arXiv
Year: 2000
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 33B15

description: An asymptotic expansion of a ratio of products of gamma functions is derived. It generalizes a formula which was stated by Dingle, first proved by Paris, and recently reconsidered by Olver.
description: 8 pages
Education in Action: The Work of Bennett College for Women, 1930 - 1960
Creators: Flowers, Deidre Bennett
Publisher: name: Columbia University
Year: 2017
Subjects: Education, Higher
African American universities and colleges
African American women--Education (Higher)
History

description: This dissertation is a study of Bennett College for Women (Bennett College), one of two Historically Black Colleges and Universities (HBCUs) whose mission continues to be the provision of higher education to Black women in America. It is one of just over one hundred HBCUs still operating in the United States. This dissertation tells the story of an institution founded as a day school in 1873 and its reorganization in 1926 as a college to educate Black women. The study answers the following research question: How does student participation in protest and activism at Bennett College for Women between 1930 and 1960 broaden our understanding of the experience of Black women in higher education?
      Located in Greensboro, North Carolina, Bennett College began operating through collaboration between the Woman’s Home Mission Society and the Board of Education of the Methodist Episcopal Church. The College, under the leadership of David Dallas Jones and Willa Beatrice Player, revised its curriculum and developed and expanded its co-curricular offerings in a way that empowered students to raise their collective voice, and that fostered a dynamic culture of activism among its students, faculty, and the Greensboro community. Until now, little was known of the their activism and protest during the early twentieth century. This dissertation explains how the College reviewed and revised its curriculum and developed a co-curricular program designed to meet the needs of Black women during the early twentieth century, with the goal of re-envisioning their role, place, and voice in American society. It also illuminates the students’ involvement in activism over a thirty-year period to better understand Black women’s higher education experience in the twentieth century.
      In addition to answering the research question, a history of the college is provided, with a focus on the early years during which David Dallas Jones and Willa Beatrice Player served Bennett College for Women as its first two presidents. I discuss how the curriculum revision and expansion of the co-curricular offerings lent itself to Bennett College re-envisioning the role, place, and voice of Black women in American society. I discuss social and gender roles, norms, and expectations of Black women during the period, as well as the rules and regulations that shaped higher education and campus life for Black women in the South generally and specifically for students at Bennett College. Bennett College publications were used to capture the student and faculty voices, in addition to the types of issues that concerned them, and around which they organized as activists, to advocate and protest. The implications of Bennett’s students’ participation in protest and activism are discussed, and how their activism challenged the gender roles, norms, and expectations for Black women in American society.
Chandra Observations of Arp 220: The Nuclear Source
Creators: name: Clements, D. L.
name: McDowell, J. C.
name: Shaked, S.
name: Baker, A. C.
name: Borne, K.
name: Colina, L.
name: Lamb, S.
name: Mundell, C.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first results from 60ks of observations of Arp 220 using the ACIS-S instrument on Chandra. We report the detection of several sources near the galaxy's nucleus, including a point source with a hard spectrum that is coincident with the western radio nucleus B. This point source is mildly absorbed (N_H ~ 3 x 10^22 cm^-2) and has an estimated luminosity of 4 x 10^40 erg/s. In addition, a fainter source may coincide with the eastern nucleus A. Extended hard X-ray emission in the vicinity raises the total estimated nuclear 2-10 keV X-ray luminosity to 1.2 x 10^41 erg/s, but we cannot rule out a hidden AGN behind columns exceeding 5 x 10^24 cm^-2. We also detect a peak of soft X-ray emission to the west of the nucleus, and a hard point source 2.5 kpc from the nucleus with a luminosity of 6 x 10^39 erg/s.
description: Accepted for publication in ApJ
Deep Generalized Method of Moments for Instrumental Variable Analysis
Creators: name: Bennett, Andrew
name: Kallus, Nathan
name: Schnabel, Tobias
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Econometrics (econ.EM)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: Instrumental variable analysis is a powerful tool for estimating causal effects when randomization or full control of confounders is not possible. The application of standard methods such as 2SLS, GMM, and more recent variants are significantly impeded when the causal effects are complex, the instruments are high-dimensional, and/or the treatment is high-dimensional. In this paper, we propose the DeepGMM algorithm to overcome this. Our algorithm is based on a new variational reformulation of GMM with optimal inverse-covariance weighting that allows us to efficiently control very many moment conditions. We further develop practical techniques for optimization and model selection that make it particularly successful in practice. Our algorithm is also computationally tractable and can handle large-scale datasets. Numerical results show our algorithm matches the performance of the best tuned methods in standard settings and continues to work in high-dimensional settings where even recent methods break.
A new approach to inverse spectral theory, I. Fundamental formalism
Creators: name: Simon, Barry
Publisher: name: arXiv
Year: 1999
Subjects: subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 34A55

description: We present a new approach (distinct from Gel'fand-Levitan) to the theorem of Borg-Marchenko that the m-function (equivalently, spectral measure) for a finite interval or half-line Schrödinger operator determines the potential. Our approach is an analog of the continued fraction approach for the moment problem. We prove there is a representation for the m-function m(-κ^2) = -κ- \int_0^b A(α) e^{-2ακ}\, dα+ O(e^{-(2b-\varepsilon)κ}). A on [0,a] is a function of q on [0,a] and vice-versa. A key role is played by a differential equation that A obeys after allowing x-dependence: \frac{\partial A}{\partial x} = \frac{\partial A}{\partial α} + \int_0^αA(β, x) A(α-β, x)\, dβ. Among our new results are necessary and sufficient conditions on the m-functions for potentials q_1 and q_2 for q_1 to equal q_2 on [0,a].
description: 29 pages, published version
Multi-Objective Optimization for Common-Centroid Placement of Analog Transistors
Creators: name: Maji, Supriyo
name: Park, Hyungjoo
name: Hong, Gi moon
name: Poddar, Souradip
name: Pan, David Z.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: In analog circuits, process variation can cause unpredictability in circuit performance. Common-centroid (CC) type layouts have been shown to mitigate process-induced variations and are widely used to match circuit elements. Nevertheless, selecting the most suitable CC topology necessitates careful consideration of important layout constraints. Manual handling of these constraints becomes challenging, especially with large size problems. State-of-the-art CC placement methods lack an optimization framework to handle important layout constraints collectively. They also require manual efforts and consequently, the solutions can be suboptimal. To address this, we propose a unified framework based on multi-objective optimization for CC placement of analog transistors. Our method handles various constraints, including degree of dispersion, routing complexity, diffusion sharing, and layout dependent effects. The multi-objective optimization provides better handling of the objectives when compared to single-objective optimization. Moreover, compared to existing methods, our method explores more CC topologies. Post-layout simulation results show better performance compared to state-of-the-art techniques in generating CC layouts.
Stellar encounters with giant molecular clouds
Creators: name: Kokaia, Giorgi
name: Davies, Melvyn B.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Giant molecular clouds (GMCs) are believed to affect the biospheres of planets as their host star passes through them. We simulate the trajectories of stars and GMCs in the Galaxy and determine how often stars pass through GMCs. We find a strong decreasing dependence with Galactocentric radius, and with the velocity perpendicular to the Galactic plane, $V_z$. The \textit{XY}-component of the kinematic heating of stars was shown to not affect the GMC hit rate, unlike the \textit{Z}-dependence ($V_z$) implies that stars hit fewer GMCs as they age. GMCs are locations of star formation, therefore we also determine how often stars pass near supernovae. For the supernovae the decrease with $V_z$ is steeper as how fast the star passes through the GMC determines the probability of a supernova encounter. We then integrate a set of Sun-like trajectories to see the implications for the Sun. We find that the Sun hits $1.6\pm1.3$ GMCs per Gyr which results in $1.5\pm1.1$ or (with correction for clustering) $0.8\pm 0.6$ supernova closer than 10 pc per Gyr. The different supernova frequencies are from whether one considers multiple supernova per GMC crossing (few Myr) as separate events. We then discuss the effect of the GMC hits on the Oort cloud, and the Earth's climate due to accretion, we also discuss the records of distant supernova. Finally, we determine Galactic Habitable Zone using our model. For the thin disk we find it to lie between 5.8-8.7 kpc and for the thick disk to lie between 4.5-7.7 kpc.
description: Accepted to MNRAS
title: CF-105 maintenance features of rubber fuel cells
Creators: name: Emmerson, G. P.
Publisher: name: Avro Aircraft Limited (Canada)
Year: 1956
Subjects: subject: Avro Arrow
subject: Avro Arrow
subject: Avro Canada
subject: A.V. Roe Canada
subject: Avro Canada CF-105 Arrow
subject: CF-105
subject: Canada supersonic jet
subject: avion à réaction supersonique du Canada
subject: delta-winged supersonic interceptor
subject: intercepteur supersonique à ailes delta
subject: design and construction
subject: conception et construction

description: Distributed online by the National Research Council of Canada
description: Distribué en ligne par le Conseil national de recherches du Canada
High oxygen pressure floating zone growth and crystal structure of the layered nickelates R$_4$Ni$_3$O$_{10}$ (R=La, Pr)
Creators: name: Zhang, Junjie
name: Zheng, Hong
name: Chen, Yu-Sheng
name: Ren, Yang
name: Yonemura, Masao
name: Huq, Ashfia
name: Mitchell, J. F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Single crystals of the metallic Ruddlesden-Popper trilayer nickelates R$_4$Ni$_3$O$_{10}$ (R=La, Pr) were successfully grown using an optical-image floating zone furnace under oxygen pressure (pO$_2$) of 20 bar for La$_4$Ni$_3$O$_{10}$ and 140 bar for Pr$_4$Ni$_3$O$_{10}$. A combination of synchrotron and laboratory x-ray single crystal diffraction, high-resolution synchrotron x-ray powder diffraction and measurements of physical properties revealed that R$_4$Ni$_3$O$_{10}$ (R=La, Pr) crystallizes in the monoclinic $P$2$_1$/$a$ (Z=2) space group at room temperature, and that a metastable orthorhombic phase ($Bmab$) can be trapped by post-growth rapid cooling. Both La$_4$Ni$_3$O$_{10}$ and Pr$_4$Ni$_3$O$_{10}$ crystals undergo a metal-to-metal transition (MMT) below room temperature. In the case of Pr$_4$Ni$_3$O$_{10}$, the MMT is found at ~157.6 K. For La$_4$Ni$_3$O$_{10}$, the MMT depends on the lattice symmetry: 147.5 K for $Bmab$ vs. 138.6 K for $P$2$_1$/$a$. Lattice anomalies were found at the MMT that, when considered together with the pronounced dependence of the transition temperature on subtle structural differences between $Bmab$ and $P$2$_1$/$a$ phases, demonstrates a not insignificant coupling between electronic and lattice degrees of freedom in these trilayer nickelates.
description: 21 pages, 8 figures, 3 tables
title: CF-105 refueling and defueling
Creators: name: Bell, P. A.
Publisher: name: Avro Aircraft Limited (Canada). Engineering Division
Year: 1956
Subjects: subject: Avro Arrow
subject: Avro Arrow
subject: Avro Canada
subject: A.V. Roe Canada
subject: Avro Canada CF-105 Arrow
subject: CF-105
subject: Canada supersonic jet
subject: avion à réaction supersonique du Canada
subject: delta-winged supersonic interceptor
subject: intercepteur supersonique à ailes delta
subject: design and construction
subject: conception et construction

description: Distributed online by the National Research Council of Canada
description: Distribué en ligne par le Conseil national de recherches du Canada
Affine embeddings of homogeneous spaces
Creators: name: Arzhantsev, I. V.
name: Timashev, D. A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Algebraic Geometry (math.AG)
subject: Rings and Algebras (math.RA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 14L30; 14M17; 17B10

description: Let G be a reductive algebraic group and let H be a reductive subgroup of G. We describe all pairs (G,H) such that for any affine G-variety X with a dense G-orbit isomorphic to G/H the number of G-orbits in X is finite. The maximal number of parameters in families of G-orbits in all affine embeddings of G/H is computed.
description: 18 pages, LaTeX 2e
Protecting quantum entanglement from leakage and qubit errors via repetitive parity measurements
Creators: name: Bultink, C. C.
name: O'Brien, T. E.
name: Vollmer, R.
name: Muthusubramanian, N.
name: Beekman, M. W.
name: Rol, M. A.
name: Fu, X.
name: Tarasinski, B.
name: Ostroukh, V.
name: Varbanov, B.
name: Bruno, A.
name: DiCarlo, L.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Protecting quantum information from errors is essential for large-scale quantum computation. Quantum error correction (QEC) encodes information in entangled states of many qubits, and performs parity measurements to identify errors without destroying the encoded information. However, traditional QEC cannot handle leakage from the qubit computational space. Leakage affects leading experimental platforms, based on trapped ions and superconducting circuits, which use effective qubits within many-level physical systems. We investigate how two-transmon entangled states evolve under repeated parity measurements, and demonstrate the use of hidden Markov models to detect leakage using only the record of parity measurement outcomes required for QEC. We show the stabilization of Bell states over up to 26 parity measurements by mitigating leakage using postselection, and correcting qubit errors using Pauli-frame transformations. Our leakage identification method is computationally efficient and thus compatible with real-time leakage tracking and correction in larger quantum processors.
description: 22 pages, 15 figures
title: CF-105 systems maintenance
Creators: name: Burn, E.
Publisher: name: Avro Aircraft Limited (Canada)
Year: 1955
Subjects: subject: Avro Arrow
subject: Avro Arrow
subject: Avro Canada
subject: A.V. Roe Canada
subject: Avro Canada CF-105 Arrow
subject: CF-105
subject: Canada supersonic jet
subject: avion à réaction supersonique du Canada
subject: delta-winged supersonic interceptor
subject: intercepteur supersonique à ailes delta
subject: design and construction
subject: conception et construction

description: Distributed online by the National Research Council of Canada
description: Distribué en ligne par le Conseil national de recherches du Canada
The Kinematics and Physical Conditions pf the Ionized Gas in Markarian 509. II. STIS Echelle Observations
Creators: name: Kraemer, S. B.
name: Crenshaw, D. M.
name: Yaqoob, T.
name: McKernan, B.
name: Gabel, J. R.
name: George, I. M.
name: Turner, T. J.
name: Dunn, J. P.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present observations of the UV absorption lines in the luminous Seyfert 1 galaxy Mrk 509, obtained with the medium resolution (lambda/Delta-lambda ~ 40,000) echelle gratings of the Space Telescope Imaging Spectrograph on the Hubble Space Telescope. The spectra reveal the presence of eight kinematic components of absorption in Ly-alpha, C IV, and N V, at radial velocities of -422, -328, -259, -62, -22, +34, +124, and +210 km s^-1 with respect to an emission-line redshift of z = 0.03440, seven of which were detected in an earlier Far Ultraviolet Spectrographic Explorer (FUSE) spectrum. The component at -22 km s^-1 also shows absorption by Si IV. The covering factor and velocity width of the Si IV lines were lower than those of the higher ionization lines for this component, which is evidence for two separate absorbers at this velocity. We have calculated photoionization models to match the UV column densities in each of these components. Using the predicted O VI column densities, we were able to match the O VI profiles observed in the FUSE spectrum. Based on our results, none of the UV absorbers can produce the X-ray absorption seen in simultaneous Chandra observations; therefore, there must be more highly ionized gas in the radial velocity ranges covered by the UV absorbers.
description: 30 pages, three figures (Figure 1 is in color). Accepted for publication in the Astrophysical Journal
Xianweng fanghe 仙翁放鶴 Q00206_01_A
Creators: name: Admin, Textcourt
Publisher: name: University of Oxford
Year: 2025
Subjects: classificationCode: 470515
subject: Literature in Chinese

description: Launched in October 2019 at the University of Oxford, TEXTCOURT: Linking the Textual Worlds of Chinese Court Theater, ca. 1600-1800 is a five-year research project whose aim is to develop a digital archive of court drama texts to connect and link them with their local and global contexts. The project will enable textual studies of Chinese court drama and produce research publications and an anthology of English translations. It will contribute to the understanding of the role of Chinese court drama in world court cultures.
Hemipterochilus bembeciformis
Creators: name: Fateryga, Alexander V.
name: Proshchalykin, Maxim Yu.
name: Maharramov, Mahir M.
name: Astafurova, Yulia V.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Eumenidae
Hemipterochilus
Hemipterochilus bembeciformis

description: Hemipterochilus bembeciformis (Morawitz, 1867)
 Odynerus bembeciformis Morawitz, 1867: 139–141, ♀ ♂ (type locality: “ Gouvernement von Saratow ” [Russia]).
 Published records. Aliyeva (2010): 57.
 Material examined. Sharur, Akhura, 39°33′N, 45°13′E, 1640 m, 13. VI.2019, 1 ♂ [CAFK], 1 ♂ [FSCV].
 Distribution. Western, Southern, and Eastern Europe, Russia (European part, Urals), Armenia, Azerbaijan, Turkey, Turkmenistan, Uzbekistan, Kazakhstan.
 Remarks. The complete synonymy is not listed here.There are two subspecies of Hemipterochilus bembeciformis besides the nominotypical one; one of them with three synonyms (van der Vecht & Fischer 1972). They require a revision since all of them may actually be synonymous.
description: Published as part of Fateryga, Alexander V., Proshchalykin, Maxim Yu., Maharramov, Mahir M. & Astafurova, Yulia V., 2021, New records of solitary vespid wasps (Hymenoptera: Vespidae: Masarinae and Eumeninae s. l.) from the Nakhchivan Autonomous Republic of Azerbaijan, pp. 36-60 in Zootaxa 5027 (1) on page 49, DOI: 10.11646/zootaxa.5027.1.2, http://zenodo.org/record/5448076
Superdiffusive limits for deterministic fast-slow dynamical systems
Creators: name: Chevyrev, Ilya
name: Friz, Peter K.
name: Korepanov, Alexey
name: Melbourne, Ian
Publisher: name: arXiv
Year: 2019
Subjects: subject: Dynamical Systems (math.DS)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider deterministic fast-slow dynamical systems on $\mathbb{R}^m\times Y$ of the form \[ \begin{cases} x_{k+1}^{(n)} = x_k^{(n)} + n^{-1} a(x_k^{(n)}) + n^{-1/α} b(x_k^{(n)}) v(y_k)\;,\quad y_{k+1} = f(y_k)\;, \end{cases} \] where $α\in(1,2)$. Under certain assumptions we prove convergence of the $m$-dimensional process $X_n(t)= x_{\lfloor nt \rfloor}^{(n)}$ to the solution of the stochastic differential equation \[ \mathop{}\!\mathrm{d} X = a(X)\mathop{}\!\mathrm{d} t + b(X) \diamond \mathop{}\!\mathrm{d} L_α \; , \] where $L_α$ is an $α$-stable Lévy process and $\diamond$ indicates that the stochastic integral is in the Marcus sense. In addition, we show that our assumptions are satisfied for intermittent maps $f$ of Pomeau-Manneville type.
description: 36 pages, 3 figures. Minor revision. To appear in Probability Theory and Related Fields
Discovery of a peculiar DQ white dwarf
Creators: name: Carollo, D.
name: Hodgkin, S. T.
name: Spagna, A.
name: Smart, R. L.
name: Lattanzi, M. G.
name: McLean, B. J.
name: Pinfield, D. J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a new carbon rich white dwarf that was identified during a proper motion survey for cool white dwarfs based on photographic material used for the construction of the Guide Star Catalog II. Its large proper motion (0.48 arcsec/yr) and faint apparent magnitude (V = 18.7) suggest a nearby object of low luminosity. A low-resolution spectrum taken with the William Herschel Telescope clearly shows strong C2 Deslandres-d'Azambuja and Swan bands, which identify the star as a DQ white dwarf. The strength of the Deslandres-d'Azambuja bands and the depression of the continuum in the Swan-band region are signs of enhanced carbon abundance for the given Teff. Comparison of our spectrophotometric data to published synthetic spectra suggests 6000 K < Teff < 8000 K although further analysis with specialized synthetic models appear necessary to derive both Teff and chemical composition. Finally, the range of spatial velocity estimated for this object makes it a likely member of the halo or thick disk population.
description: Accepted for publication in A&A Letters, 4 pages, 2 figures
The twisting dynamics of large lattice mismatch van der Waals heterostructures
Creators: name: Liao, Mengzhou
name: Silva, Andrea
name: Du, Luojun
name: Nicolini, Paolo
name: Claerbout, Victor E. P.
name: Kramer, Denis
name: Yang, Rong
name: Shi, Dongxia
name: Polcar, Tomas
name: Zhang, Guangyu
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Van der Waals (vdW) homo-/hetero-structures are ideal systems for studying interfacial tribological properties such as structural superlubricity. Previous studies concentrated on the mechanism of translational motion in vdW interfaces. However, detailed mechanisms and general properties of the rotational motion are barely explored. Here, we combine experiments and simulations to reveal the twisting dynamics of the MoS$_2$/graphite heterostructure. Unlike the translational friction falling into the superlubricity regime with no twist angle dependence, the dynamic rotational resistances highly depend on twist angles. Our results show that the periodic rotational resistance force originates from structural potential energy changes during the twisting. The structural potential energy of MoS$_2$/graphite heterostructure increases monotonically from0 to 30 degrees twist angles, and the estimated relative energy barrier is (1.43 +/- 0.36) x 10 J/m. The formation of Moiré superstructures in the graphene layer is the key to controlling the structural potential energy of the MoS$_2$/graphene heterostructure. Our results suggest that in twisting 2D heterostructures, even if the interface sliding friction is negligible, the evolving potential energy change results in a non-vanishing rotational resistance force. The structural change of the heterostructure can be an additional pathway for energy dissipation in the rotational motion, further enhancing the rotational friction force.
description: Published in ACS Appl. Mater. Interfaces 2023, 15, 15, 19616-19623
Xiqia xianghe 喜洽祥和 Q00209_01_A
Creators: name: Admin, Textcourt
Publisher: name: University of Oxford
Year: 2025
Subjects: classificationCode: 470515
subject: Literature in Chinese

description: Launched in October 2019 at the University of Oxford, TEXTCOURT: Linking the Textual Worlds of Chinese Court Theater, ca. 1600-1800 is a five-year research project whose aim is to develop a digital archive of court drama texts to connect and link them with their local and global contexts. The project will enable textual studies of Chinese court drama and produce research publications and an anthology of English translations. It will contribute to the understanding of the role of Chinese court drama in world court cultures.
The chiral SYK model
Creators: name: Lian, Biao
name: Sondhi, S. L.
name: Yang, Zhenbin
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the generalization of the Sachdev-Ye-Kitaev (SYK) model to a $1+1$ dimensional chiral SYK model of $N$ flavors of right-moving chiral Majorana fermions with all-to-all random 4-fermion interactions. The interactions in this model are exactly marginal, leading to an exact scaling symmetry. We show the Schwinger-Dyson equation of this model in the large $N$ limit is exactly solvable. In addition, we show this model is integrable for small $N\le6$ by bosonization. Surprisingly, the two point function in the large $N$ limit has exactly the same form as that for $N=4$, although the four point functions of the two cases are quite different. The ground state entropy in the large $N$ limit is the same as that of $N$ free chiral Majorana fermions, leading to a zero ground state entropy density. The OTOC of the model in the large $N$ limit exhibits a non-trivial spacetime structure reminscent of that found by Gu and Kitaev for generic SYK-like models. Specifically we find a Lyapunov regime inside an asymmetric butterfly cone, which are signatures of quantum chaos, and that the maximal velocity dependent Lyapunov exponent approaches the chaos bound $2π/β$ as the interaction strength approaches its physical upper bound. Finally, the model is integrable for (at least) $N\le6$ but chaotic in the large $N$ limit, leading us to conjecture that there is a transition from integrability to chaos as $N$ increases past a critical value.
description: 51 pages, 13 figures, typos corrected
Additional file 6 of The reference genome and transcriptome of the limestone langur, Trachypithecus leucocephalus, reveal expansion of genes related to alkali tolerance
Creators: name: Que, Tengcheng
name: Wang, Huifeng
name: Yang, Weifei
name: Wu, Jianbao
name: Hou, Chenyang
name: Pei, Surui
name: Wu, Qunying
name: Li, Liu Ming
name: Wei, Shilu
name: Xie, Xing
name: Huang, Hongli
name: Chen, Panyu
name: Huang, Yiming
name: Wu, Aiqiong
name: He, Meihong
name: Nong, Dengpan
name: Wei, Xiao
name: Wu, Junyi
name: Nong, Ru
name: Huang, Ning
name: Zhou, Qingniao
name: Lin, Yaowang
name: Lu, Tingxi
name: Wei, Yongjie
name: Li, Shousheng
name: Yao, Jianglong
name: Zhong, Yanli
name: Qin, Huayong
name: Tan, Luohao
name: Li, Yingjiao
name: Li, Weidong
name: Liu, Tao
name: Liu, Sanyang
name: Yu, Yongyi
name: Qiu, Hong
name: Jiang, Yonghua
name: Li, Youcheng
name: Liu, Zhijin
name: Huang, Cheng Ming
name: Hu, Yanling
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6: Table S1. Illumina libraries used in the de novo sequencing of the T. leucocephalus genome.
Katamenes flavigularis
Creators: name: Fateryga, Alexander V.
name: Proshchalykin, Maxim Yu.
name: Maharramov, Mahir M.
name: Astafurova, Yulia V.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Eumenidae
Katamenes
Katamenes flavigularis

description: Katamenes flavigularis (Blüthgen, 1951)
 Eumenes arbustorum flavigularis Blüthgen, 1951a: 176, ♀ ♂ (type locality: “ Ak-Chehir ” [Turkey]).
 Published records. Aliyeva (2010): 56, as Katamenes arbustorum, misidentification.
 Material examined. Ordubad, Aghdara, 39°06′N, 45°54′E, 2000 m, 17. VI.2019, 1 ♂ [FSCV]; Sharur, Akhura, 39°33′N, 45°13′E, 1640 m, 13. VI.2019, 2 ♂ [CAFK], 4 ♂ [FSCV].
 Distribution. Southern and Eastern Europe, Russia (European part), Georgia, Armenia, Azerbaijan (new to Nakhchivan AR), Turkey, Syria, Lebanon, Israel, Iran, Afghanistan, Tajikistan, India.
 Remarks. This species have been already listed for Azerbaijan (without details) by Girish Kumar et al. (2019). Aliyeva (2010) obviously misidentified it as K. arbustorum (Panzer, 1799) due to use of an incorrect key published by Tobias & Kurzenko (1978); the latter species, however, do not occur in the Caucasus and therefore is excluded from the fauna of Azerbaijan.
description: Published as part of Fateryga, Alexander V., Proshchalykin, Maxim Yu., Maharramov, Mahir M. & Astafurova, Yulia V., 2021, New records of solitary vespid wasps (Hymenoptera: Vespidae: Masarinae and Eumeninae s. l.) from the Nakhchivan Autonomous Republic of Azerbaijan, pp. 36-60 in Zootaxa 5027 (1) on page 49, DOI: 10.11646/zootaxa.5027.1.2, http://zenodo.org/record/5448076
Tangent and cotangent lifts and graded Lie algebras associated with Lie algebroids
Creators: name: Grabowski, Janusz
name: Urbanski, Pawel
Publisher: name: arXiv
Year: 1997
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: Generalized Schouten, Froelicher-Nijenhuis and Froelicher-Richardson brackets are defined for an arbitrary Lie algebroid. Tangent and cotangent lifts of Lie algebroids are introduced and discussed and the behaviour of the related graded Lie brackets under these lifts is studied. In the case of the canonical Lie algebroid on the tangent bundle, a new common generalization of the Froelicher-Nijenhuis and the symmetric Schouten brackets, as well as embeddings of the Nijenhuis-Richardson and the Froelicher-Nijenhuis bracket into the Schouten bracket, are obtained.
description: LamsTex 1991, 28 pages, to appear in Annals of global analysis and geometry
An empirical assessment of best-answer prediction models in technical Q&A sites
Creators: name: Calefato, Fabio
name: Lanubile, Filippo
name: Novielli, Nicole
Publisher: name: arXiv
Year: 2019
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Technical Q&A sites have become essential for software engineers as they constantly seek help from other experts to solve their work problems. Despite their success, many questions remain unresolved, sometimes because the asker does not acknowledge any helpful answer. In these cases, an information seeker can only browse all the answers within a question thread to assess their quality as potential solutions. We approach this time-consuming problem as a binary-classification task where a best-answer prediction model is built to identify the accepted answer among those within a resolved question thread, and the candidate solutions to those questions that have received answers but are still unresolved. In this paper, we report on a study aimed at assessing 26 best-answer prediction models in two steps. First, we study how models perform when predicting best answers in Stack Overflow, the most popular Q&A site for software engineers. Then, we assess performance in a cross-platform setting where the prediction models are trained on Stack Overflow and tested on other technical Q&A sites. Our findings show that the choice of the classifier and automated parameter tuning have a large impact on the prediction of the best answer. We also demonstrate that our approach to the best-answer prediction problem is generalizable across technical Q&A sites. Finally, we provide practical recommendations to Q&A platform designers to curate and preserve the crowdsourced knowledge shared through these sites.
Discrete orthogonal polynomial ensembles and the Plancherel measure
Creators: name: Johansson, Kurt
Publisher: name: arXiv
Year: 1999
Subjects: subject: Combinatorics (math.CO)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider discrete orthogonal polynomial ensembles which are discrete analogues of the orthogonal polynomial ensembles in random matrix theory. These ensembles occur in certain problems in combinatorial probability and can be thought of as probability measures on partitions. The Meixner ensemble is related to a two-dimensional directed growth model, and the Charlier ensemble is related to the lengths of weakly increasing subsequences in random words. The Krawtchouk ensemble occurs in connection with zig-zag paths in random domino tilings of the Aztec diamond, and also in a certain simplified directed first-passage percolation model. We use the Charlier ensemble to investigate the asymptotics of weakly increasing subsequences in random words and to prove a conjecture of Tracy and Widom. As a limit of the Meixner ensemble or the Charlier ensemble we obtain the Plancherel measure on partitions, and using this we prove a conjecture of Baik, Deift and Johansson that under the Plancherel measure, the distribution of the lengths of the first k rows in the partition, appropriately scaled, converges to the asymptotic joint distribution for the k largest eigenvalues of a random matrix from the Gaussian Unitary Ensemble. In this problem a certain discrete kernel, which we call the discrete Bessel kernel, plays an important role.
description: 38 pages, published version
When does OMP achieve exact recovery with continuous dictionaries?
Creators: name: Elvira, Clément
name: Gribonval, Rémi
name: Soussen, Charles
name: Herzet, Cédric
Publisher: name: arXiv
Year: 2019
Subjects: subject: Information Theory (cs.IT)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: This paper presents new theoretical results on sparse recovery guarantees for a greedy algorithm, Orthogonal Matching Pursuit (OMP), in the context of continuous parametric dictionaries. Here, the continuous setting means that the dictionary is made up of an infinite uncountable number of atoms. In this work, we rely on the Hilbert structure of the observation space to express our recovery results as a property of the kernel defined by the inner product between two atoms. Using a continuous extension of Tropp's Exact Recovery Condition, we identify key assumptions allowing to analyze OMP in the continuous setting. Under these assumptions, OMP unambiguously identifies in exactly $k$ steps the atom parameters from any observed linear combination of $k$ atoms. These parameters play the role of the so-called support of a sparse representation in traditional sparse recovery. In our paper, any kernel and set of parameters that satisfy these conditions are said to be admissible. In the one-dimensional setting, we exhibit a family of kernels relying on completely monotone functions for which admissibility holds for any set of atom parameters. For higher dimensional parameter spaces, the analysis turns out to be more subtle. An additional assumption, so-called axis admissibility, is imposed to ensure a form of delayed recovery (in at most $k^D$ steps, where $D$ is the dimension of the parameter space). Furthermore, guarantees for recovery in exactly $k$ steps are derived under an additional algebraic condition involving a finite subset of atoms (built as an extension of the set of atoms to be recovered). We show that the latter technical conditions simplify in the case of Laplacian kernels, allowing us to derive simple conditions for $k$-step exact recovery, and to carry out a coherence-based analysis in terms of a minimum separation assumption between the atoms to be recovered.
description: 52 pages, 2 figures
Nodal sets for the groundstate of the Schroedinger operator with zero magnetic field in a non simply connected domain
Creators: name: Helffer, B.
name: Hoffmann-Ostenhof, M.
name: Hoffmann-Ostenhof, T.
name: Owen, M. P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 58G25; 53C21

description: We investigate nodal sets of magnetic Schroedinger operators with zero magnetic field, acting on a non simply connected domain in $\r^2$. For the case of circulation 1/2 of the magnetic vector potential around each hole in the region, we obtain a charactisation of the nodal set, and use this to obtain bounds on the multiplicity of the groundstate. For the case of one hole and a fixed electric potential, we show that the first eigenvalue takes its highest value for circulation 1/2.
description: 30 pages, 8 figures
title: CF-105. Environmental requirements for mobile ground power units
Creators: name: Avro Aircraft Limited (Canada)
Publisher: name: Avro Aircraft Limited (Canada)
Year: 1957
Subjects: subject: Avro Arrow
subject: Avro Arrow
subject: Avro Canada
subject: A.V. Roe Canada
subject: Avro Canada CF-105 Arrow
subject: CF-105
subject: Canada supersonic jet
subject: avion à réaction supersonique du Canada
subject: delta-winged supersonic interceptor
subject: intercepteur supersonique à ailes delta

description: Distributed online by the National Research Council of Canada
description: Distribué en ligne par le Conseil national de recherches du Canada
title: Integrated Flood Risk Management in India and the South Asia Region
title: Lessons from the Rhine and Danube
titleType: Subtitle
Creators: name: Brears, Robert
Publisher: name: Freie Universität Berlin
Year: 2015

description: India and the South Asia region are one of the world’s most vulnerable regions to climate change flooding events. With flood risks being transboundary, there is the potential for floods in South Asia to cause widespread instability and state fragility leading to migration and displacement, weak governance and overall geo-political instability in the region. Europe has experience in managing transboundary flood risks, most recently with the implementation of the EU Flood Directive, which calls for transboundary actions to mitigate flood risks. Using existing platforms for cooperation, Europe can transfer knowledge on Integrated Flood Risk Management expertise to India and the wider South Asia region in order to help ensure regional economic and political stability.
Improved Description of Perovskite Oxide Crystal Structure and Electronic Properties using Self-Consistent Hubbard $U$ Corrections from ACBN0
Creators: name: May, Kevin J.
name: Kolpak, Alexie M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The wide variety of complex physical behavior exhibited in transition metal oxides, particularly the perovskites A$B$O$_3$, makes them a material family of interest in many research areas, but the drastically different electronic structures possible in these oxides raises challenges in describing them accurately within density functional theory (DFT) and related methods. Here we evaluate the ability of the ACBN0, a recently developed first-principles approach to computing the Hubbard $U$ correction self-consistently, to describe the structural and electronic properties of the first-row transition metal perovskites with $\left(B=\textrm{V}-\textrm{Ni} \right)$. ACBN0 performs competitively with hybrid functional approaches such as the Heyd-Scuseria-Ernzerhof (HSE) functional even when they are optimized empirically, at a fraction of the computational cost. ACBN0 also describes both the structure and band gap of the oxides more accurately than a conventional Hubbard $U$ correction performed by using $U$ values taken from the literature.
title: Opportunist or steward?
title: The influence of the board chairman on CEO dismissals and replacements ; Paper presented at the 26th annual conference of the Strategic Management Society, Vienna, October 2006
titleType: Subtitle
Creators: name: Bresser, Rudi K. F.
name: Valle Thiele, Reynaldo
name: Biedermann, Annette
name: Lüdeke, Holger
Publisher: name: Freie Universität Berlin
Year: 2006
Subjects: subject: executive succession
subject: CEO duality
subject: stewardship theory
subject: agency theory
subject: 300 Sozialwissenschaften::330 Wirtschaft

description: Based on a sample of large, publicly traded German companies, we study performance implications of CEO duality for executive succession events. We find that CEO dismissals are more frequent at low levels of pre-succession market-based performance and CEO duality. Postsuccession sales growth and operating earnings are higher for firms with CEO dismissals and CEO duality. Our results provide partial support to stewardship theory and no support to agency theory.
Leptochilus (Lionotulus) membranaceus
Creators: name: Fateryga, Alexander V.
name: Proshchalykin, Maxim Yu.
name: Maharramov, Mahir M.
name: Astafurova, Yulia V.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Polypodiopsida
Polypodiales
Polypodiaceae
Leptochilus
Leptochilus membranaceus

description: Leptochilus (Lionotulus) membranaceus (Morawitz, 1867)
 Leptochilus membranaceus Morawitz, 1867: 135–136, ♀ (type locality: “ Gouvernement von Saratow ” [Russia]).
 Published records. Aliyeva (2010): 56.
 Material examined. Babek, Sirab, 39°18′N, 45°31′E, 1090 m, 10. VI.2019, 1 ♀ [CAFK].
 Distribution. Southern and Eastern Europe, Russia (European part), Armenia, Azerbaijan, Turkey, Israel, Iran, Turkmenistan, Uzbekistan, Kazakhstan.
 Remarks. The subspecies Leptochilus membranaceus luxuriosus Blüthgen, 1955, known from Israel, is not included to the synonymy since it requires a revision.
description: Published as part of Fateryga, Alexander V., Proshchalykin, Maxim Yu., Maharramov, Mahir M. & Astafurova, Yulia V., 2021, New records of solitary vespid wasps (Hymenoptera: Vespidae: Masarinae and Eumeninae s. l.) from the Nakhchivan Autonomous Republic of Azerbaijan, pp. 36-60 in Zootaxa 5027 (1) on page 49, DOI: 10.11646/zootaxa.5027.1.2, http://zenodo.org/record/5448076
Shadows of Wave Fronts and Arnold-Bennequin Type Invariants of Fronts on Surfaces and Orbifolds
Creators: name: Tchernov, Vladimir
Publisher: name: arXiv
Year: 1999
Subjects: subject: Geometric Topology (math.GT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 57M99, 53C15 (Primary) 73D20 (Secondary)

description: A first order Vassiliev invariant of an oriented knot in an $S^1$-fibration and a Seifert fibration over a surface is constructed. It takes values in a quotient of the group ring of the first homology group of the total space of the fibration. It gives rise to an invariant of wave fronts on surfaces and orbifolds related to the Bennequin-type invariants of the Legendrian curves studied by F. Aicardi, V. Arnold, M. Polyak, and S. Tabachnikov. Formulas expressing these relations are presented. We also calculate Turaev's shadow for the Legendrian lifting of a wave front. This allows to use in the case of wave fronts all invariants known for shadows.
description: 33 Pages, 27 Figures
Qianqiu haiyan 千秋海晏 Q00322_01_E
Creators: name: Admin, Textcourt
Publisher: name: University of Oxford
Year: 2025
Subjects: classificationCode: 470515
subject: Literature in Chinese

description: Launched in October 2019 at the University of Oxford, TEXTCOURT: Linking the Textual Worlds of Chinese Court Theater, ca. 1600-1800 is a five-year research project whose aim is to develop a digital archive of court drama texts to connect and link them with their local and global contexts. The project will enable textual studies of Chinese court drama and produce research publications and an anthology of English translations. It will contribute to the understanding of the role of Chinese court drama in world court cultures.