cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Inhomogeneous universes admitting a post-Newtonian approximation
Creators: name: ROBERTSON, CALUM JOHN
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 490204
subject: Mathematical aspects of general relativity

description: We rigorously construct a linear post-Newtonian approximation applicable to cosmological solutions of the Einstein-Euler system. Our approach centres on solving the initial value problem.
Firstly, we provide a construction for families of suitably near-Newtonian initial data. These data uniformly satisfy the constraints required by the Einstein equations, and describe a finite number of fluid inhomogeneities superimposed upon a spatially homogeneous background, allowing for any value of the cosmological constant.
Secondly, we develop a consistent approximation scheme for the families of solutions launched by these data. Solving the equations determined by this scheme, we obtain a linear post-Newtonian approximation for each family of solutions, valid locally in time and globally in space.
Agglomeration Elasticities and Firm Heterogeneity
Creators: name: Maré, David C.
name: Graham, Daniel J.
name: Maré, David C.
name: Graham, Daniel J.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Industrial Organization
subject: Agglomeration
subject: urban density
subject: productivity

description: This paper estimates the relationship between agglomeration and multi factor productivity at the one digit industry level and by region using longitudinal firm level data for New Zealand. A key focus of the paper is on methods to represent firm level heterogeneity and non-random sorting of firms. The panel structure of the data allows us to control for it at the level of local industries or enterprises. We obtain a cross-sectional agglomeration elasticity of 0.171, which falls by 70% when we use local industry controls, and by 90% when we impose enterprise fixed effects. Using industry specific production functions, we find that the “within local industry” estimates are similar, though slightly larger than the cross sectional estimates (~0.070), suggesting negative sorting between areas, combined with positive sorting within areas. The within-enterprise estimates yield a small elasticity of 0.010. Our results indicate that the imposition of a common production technology across all industries is not a valid assumption. While cross-sectional estimates may overstate the true impact of agglomeration on productivity in the presence of positive bias from sorting, the within enterprise approach (which is increasingly common in the literature) can suffer from identification problems due to the highly persistent nature of agglomeration variables and may understate the true causal effect of agglomeration on productivity. We thus rely on the “within local industry” estimates as providing the most reliable indication of agglomeration elasticities.
The Dialectical Object: John Heartfield 1915 - 1933
Creators: Bush, Diana M.
Publisher: name: Columbia University
Year: 2013
Subjects: Art

description: In 1933, after the election of the National Socialists in Germany, John Heartfield fled Berlin for Prague, leaving behind the significant intervention in contemporary cultural and social discourses that his photomontages for the Arbeiter-Illustrierte Zeitung comprised. While this body of work, produced from 1930, has been understood as Heartfield's master work, it has also often been understood as straightforward "popular front" propaganda and the accomplished embodiment of the "dialectical" method that were significant aspects of the cultural policy of the official left. There have been few attempts to work through the formally innovative aspects of Heartfield's particular "dialectical" method, and more broadly speaking, little critical consideration of the complex engagement of social realism that characterizes the A-I Z photomontages. Taking as a point of departure Heartfield's presence in institutional and scholarly discourses, and adopting an approach that is thematic rather than chronologically exhaustive, this dissertation investigates his collaborative engagements of performance, theatrical production, film, and the newly-emergent "photo book" to argue for a more nuanced treatment of the A-I Z photomontages than has been the case. Critical writing focused on the decade between Heartfield's Berlin Dadaist affiliations and his work for the Arbeiter-Illustrierte Zeitung has been conspicuously absent, and his work with film and theater have not been considered in relation to his photomontage practice of the later 1920s. Drawing on the theorizations of Michel Foucault and Gilles Deleuze regarding subjectivity and aesthetic engagement, the formation of cultural collectives, and processes of meaning production, this dissertation will argue that Heartfield's involvement in specifically performative cultural formations is central to understanding the advanced photomontage practice he developed, even as this orientation also rendered his intervention in the modes and institutions of cultural production incomprehensible to the various historical paradigms, left and otherwise, of modern art. In my conclusion, I draw Heartfield back into the present to consider the import and resonance of his interventions for contemporary interests and practices. Bringing recent theorizations of the public sphere in relationship to investigations of subversive subjectivities and models of meaning production formed around the "event," my dissertation argues for an expanded notion of aesthetic reception, critical realism, and "political" art.
Periodic orbit sum rules for billiards: Accelerating cycle expansions
Creators: name: Nielsen, Sune F.
name: Dahlqvist, Per
name: Cvitanovic, Predrag
Publisher: name: arXiv
Year: 1999
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We show that the periodic orbit sums for 2-dimensional billiards satisfy an infinity of exact sum rules. We test such sum rules and demonstrate that they can be used to accelerate the convergence of cycle expansions for averages such as Lyapunov exponents.
description: 19 pages, 5 postscript figures, submitted to Journal of Physics A
Sambucus africana Standl.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Dipsacales
Adoxaceae
Sambucus
Sambucus africana

description: Sambucus africana Standl.  —
Habit: Herb.
Habitat: LMWF, LMDF, BZ, UMF; 1 700–3 700 m. Distribution: IIIa.
 Voucher: Sirimon Track, Alt. 2 847 m, 17 Jul. 2014, SAJIT 001847 (HIB) & CPG 28325 (HIB, PE).
References: Fries & Fries (1925), Verdcourt (1968), Blundell (1987), Bussmann (1993, 1994, 1996), Bussmann & Beck (1995a, 1998), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 98, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Maximizing the singly charged fraction of sub-micrometer particles using a unipolar charger
Creators: name: Xiaotong Chen
name: Jingkun Jiang
name: Chen, Da-Ren
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy

description: Particle charging via the mixing of aerosols with unipolar ions typically results in multiple charges on particles. Particle classification and sizing, based on the electrical mobility, ideally requires all the particles being singly charged to the performance enhancement. In this study, we explored the feasibility of maximizing the singly charged fraction of particles via the control of the Nit product in a unipolar charger. The feasibility was first investigated by modeling unipolar diffusion charging. It was found that the singly charged fraction of monodisperse particles could be maximized by the control of the Nit product. A corona-based unipolar charger was also constructed to study the maximization of the singly charged fraction of monodisperse particles. It was found that a wider range of ion concentration in the charging zone could be obtained by the variation of ion-driving voltage compared to that by changing the corona-discharge current. The maximum singly charged fraction of monodisperse particles in various sizes was characterized when the charger was operated at the flow rates of 1.5 and 3.0 lpm. It was evidenced that the current charger could be conditioned to achieve a higher singly charged fraction of particles than that by bipolar chargers in the particle size range of 20–200 nm, particularly in the ultrafine particle size range. The control of Nit product in the charging zone of a unipolar charger offers a simple and effective means to enhance the singly charged fraction of particles in a given size range. Copyright © 2019 American Association for Aerosol Research
Quantum valence bond ice theory for proton-driven quantum spin-dipole liquids
Creators: name: Yamada, Masahiko G.
name: Tada, Yasuhiro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a theory of a hybrid quantum liquid state, $\textit{quantum spin-dipole liquid}$ (QSDL), in a hydrogen-bonded electron system, by combining a quantum proton ice and Anderson's resonating valence bond spin liquid theory, motivated by the recent experimental discovery of a quantum spin liquid with proton fluctuations in $κ$-H$_3$(Cat-EDT-TTF)$_2$ (a.k.a. H-Cat). In our theory, an electron spin liquid and a proton dipole liquid are realized simultaneously in the ground state called $\textit{quantum valence bond ice}$. In this state, neither of them can be established independently of the other. Analytical and numerical calculations reveal that this state has a large entanglement entropy between spins and dipoles, which is far beyond the (crude) Born-Oppenheimer approximation. We also examine the stability of QSDL with respect to perturbations and discuss implications for experiments in H-Cat and its deuterated analog D-Cat.
description: 9 pages, 7 figures
Correspondence between Oral Fluid Drug Test Results and Self-Reported Illicit Drug Use among Music Festival Attendees
Creators: name: Gjerde, Hallvard
name: Gjersing, Linn
name: Furuhaugen, Håvard
name: Bretteville-Jensen, Anne Line
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Background: Use of illicit substances is often under-reported. Testing positive in oral fluid provides an objective confirmation of recent intake. Objectives: To examine the agreement between oral fluid test results and self-reported substance use among music festival attendees, and factors associated with reporting past 48 h drug use among users identified by drug testing. Methods: One thousand three hundred nine participants were recruited from six music festivals in Norway (June–August 2016). They completed a questionnaire and provided oral fluid samples analyzed for amphetamines, MDMA, tetrahydrocannabinol (cannabis), and cocaine. Additionally, their blood alcohol levels were measured. Results: Overall, 5.5% reported use of amphetamines, cannabis, cocaine, and/or MDMA during past 48 h in the questionnaire, whereas 10.8% tested positive in oral fluid. Only 16.7% of identified cocaine users and 31.1% of identified MDMA users reported past 48 h cocaine or MDMA use, respectively. Higher proportions of identified cannabis and amphetamine users reported past 48 h use (53.8% and 55.6%, respectively). Multivariable logistic regression analysis showed that among participants who tested positive, those reporting weekly illicit substance use (Adjusted Odds Ratio [AOR] 30.6; 95% Confidence Interval [CI] 6.3–147.9), and using such substances when younger than 18 years (AOR 5.0; 95% CI 1.9–13.4) were more likely to report past 48 h use. Conclusions/Importance: Oral fluid testing appears to be an important tool when studying illicit substance use among music festival attendees, as significant under-reporting was observed. Among those testing positive, regular, and experienced users were more likely to report recent use, compared to less regular and experienced users.
Comment on Mott Scattering in strong Laser Field
Creators: name: Attaourti, Y.
name: Manaut, B.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The first differential cross section for Mott scattering of a Dirac-Volkov electron is reviewed. The expression (26) derived by Szymanowski et al. [Physical Review A {\bf 56}, 3846,(1997)] is corrected. In particular, we disagree with the expression of $(\frac{dσ}{dΩ})$ they obtained and we give the exact coefficients multiplying the various Bessel functions appearing in the scattering differential cross section.
description: 16 pages, LaTex, added reference for section 3, corrected some typosReport no: LPHEA 02-01
Universal AF-algebras
Creators: name: Ghasemi, Saeed
name: Kubiś, Wiesław
Publisher: name: arXiv
Year: 2019
Subjects: subject: Operator Algebras (math.OA)
subject: Category Theory (math.CT)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46L05, 46L85, 46M15

description: We study the approximately finite-dimensional (AF) $C^*$-algebras that appear as inductive limits of sequences of finite-dimensional $C^*$-algebras and left-invertible embeddings. We show that there is such a separable AF-algebra $\mathcal A_\mathfrak{F}$ with the property that any separable AF-algebra is isomorphic to a quotient of $\mathcal A_\mathfrak{F}$. Equivalently, by Elliott's classification of separable AF-algebras, there are surjectively universal countable scaled (or with order-unit) dimension groups. This universality is a consequence of our result stating that $\mathcal A_\mathfrak{F}$ is the Fra\"ıssé limit of the category of all finite-dimensional $C^*$-algebras and left-invertible embeddings. With the help of Fra\"ıssé theory we describe the Bratteli diagram of $\mathcal A_\mathfrak{F}$ and provide conditions characterizing it up to isomorphisms. $\mathcal A_\mathfrak{F}$ belongs to a class of separable AF-algebras which are all Fra\"ıssé limits of suitable categories of finite-dimensional $C^*$-algebras, and resemble $C(2^\mathbb N)$ in many senses. For instance, they have no minimal projections, tensorially absorb $C(2^\mathbb N)$ (i.e. they are $C(2^\mathbb N)$-stable) and satisfy similar homogeneity and universality properties as the Cantor set.
description: The content is the same as in the published version
An investigation of continuous interaction process between air bubble and various roughness coal surfaces using microbalance
Creators: name: Zhimin, Guo
name: Jianguo, Yang
name: Yulin, Wang
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2019
Subjects: surface roughness, air bubble, contact angle, continuous interaction

description: Physicochemical Problems of Mineral Processing; ISSN 2084-4735
Quantum Metropolis sampling: an algorithm to simulate thermal systems with a quantum computer
Creators: name: Poulin, David
Publisher: name: The University of British Columbia
Year: 2016

description: The original motivation to build a quantum computer came from Feynman who envisaged a machine capable of simulating generic quantum mechanical systems, a task that is intractable for classical computers. Such a machine would have tremendous applications in all physical sciences, including condensed matter physics, chemistry, and high energy physics. Part of Feynman's challenge was met by Lloyd who showed how to approximately decompose the time-evolution operator of interacting quantum particles into a short sequence of elementary gates, suitable for operation on a quantum computer. However, this left open the more fundamental problem of how to simulate the equilibrium and static properties of quantum systems. This requires the preparation of ground and Gibb's states on a quantum computer. For classical systems, this problem is solved by the ubiquitous Metropolis algorithm, a method that basically acquired a monopoly for the simulation of interacting particles. In this talk, I will demonstrate that the corresponding quantum problem can be solved by a quantum Metropolis algorithm. This validates the quantum computer as a universal simulator, and proves that the so-called sign ! problem occurring in quantum Monte Carlo methods can be resolved with a quantum computer.
Revisión de técnicas no destructivas para la estimación de la biomasa forestal aérea
Creators: name: Tafur, Elton
name: Veneros, Jaris
name: García, Ligia
Publisher: name: figshare
Year: 2022
Subjects: subject: 90905 Photogrammetry and Remote Sensing
subject: FOS: Environmental engineering
subject: 50104 Landscape Ecology
subject: FOS: Earth and related environmental sciences
subject: 70502 Forestry Biomass and Bioproducts
subject: FOS: Agriculture, forestry and fisheries

description: Compilación de metodologías para la estimación de Biomasa Forestal Aérea (BFA).
Monopole and electrically charged dust thin shells in general relativity: Classical and quantum comparison of hollow and atomlike configurations
Creators: name: Zloshchastiev, Konstantin G.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a comparative description of monopole and electrically charged spherically symmetric dust thin shells. Herewith we consider two of the most interesting configurations: the hollow shell and shell, surrounding a body with opposite charge. The classification of shells in accordance with the types of black holes and traversable wormholes is constructed. The theorems for the parameters of turning points are proved. Also for atomlike configurations the effects of screening (electrical case) and amplification (monopole case) of the internal mass by shell charge are studied. Finally, one considers the quantum aspects; herewith, exact solutions of wave equations and bound states spectra are found.
description: 18 pages, REVTeX 3.1
Quantum Lévy Processes and Fractional Kinetics
Creators: name: Kusnezov, Dimitri
name: Bulgac, Aurel
name: Dang, Giu Do
Publisher: name: arXiv
Year: 1999
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Exotic stochastic processes are shown to emerge in the quantum evolution of complex systems. Using influence function techniques, we consider the dynamics of a system coupled to a chaotic subsystem described through random matrix theory. We find that the reduced density matrix can display dynamics given by Lévy stable laws. The classical limit of these dynamics can be related to fractional kinetic equations. In particular we derive a fractional extension of Kramers equation.
description: 4 pages Revtex. To appear in Phys. Rev. Lett. (1999)
Sambucus canadensis L.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Dipsacales
Adoxaceae
Sambucus
Sambucus canadensis

description: * Sambucus canadensis L.  —
Habit: Herb.
Habitat: LMWF. Distribution: IV.
 Voucher: Kaburia Track, Alt. 2 146 m, 10 Aug. 2015, SAJIT 003951 (HIB).
Reference: N/A.
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 98, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Discrete symmetries as automorphisms of the proper Poincare group
Creators: name: Buchbinder, I. L.
name: Gitman, D. M.
name: Shelepin, A. L.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We present the consistent approach to finding the discrete transformations in the representation spaces of the proper Poincaré group. To this end we use the possibility to establish a correspondence between involutory automorphisms of the proper Poincaré group and the discrete transformations. As a result, we derive rules of the discrete transformations for arbitrary spin-tensor fields without the use of relativistic wave equations. Besides, we construct explicitly fields carrying representations of the extended Poincaré group, which includes the discrete transformations as well.
description: 33 pages, LaTex
Kinetic Ising model in an oscillating field: Avrami theory for the hysteretic response and finite-size scaling for the dynamic phase transition
Creators: name: Sides, S. W.
name: Rikvold, P. A.
name: Novotny, M. A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Hysteresis is studied for a two-dimensional, spin-1/2, nearest-neighbor, kinetic Ising ferromagnet in an oscillating field, using Monte Carlo simulations and analytical theory. Attention is focused on large systems and strong field amplitudes at a temperature below T_c. In this parameter regime, the magnetization switches through random nucleation and subsequent growth of many droplets of spins aligned with the applied field. Using a time-dependent extension of the Kolmogorov-Johnson-Mehl-Avrami (KJMA) theory of metastable decay, we analyze the statistical properties of the hysteresis-loop area and the correlation between the magnetization and the applied field. This analysis enables us to accurately predict the results of extensive Monte Carlo simulations. The average loop area exhibits an extremely slow approach to an asymptotic, logarithmic dependence on the product of the amplitude and the frequency of the applied field. This may explain the inconsistent exponent estimates reported in previous attempts to fit experimental and numerical data for the low-frequency behavior of this quantity to a power law. At higher frequencies we observe a dynamic phase transition. Applying standard finite-size scaling techniques from the theory of second-order equilibrium phase transitions to this nonequilibrium phase transition, we obtain estimates for the transition frequency and the critical exponents (beta/nu \approx 0.11, gamma/nu \approx 1.84 and nu \approx 1.1). In addition to their significance for the interpretation of recent experiments on switching in ferromagnetic and ferroelectric nanoparticles and thin films, our results provide evidence for the relevance of universality and finite-size scaling to dynamic phase transitions in spatially extended nonstationary systems.
description: 24 pages RevTex with postscript figures. Minor revisions. In press in PRE
Dipsacus pinnatifidus A. Rich.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Dipsacales
Caprifoliaceae
Dipsacus
Dipsacus pinnatifidus

description: Dipsacus pinnatifidus Steud. ex A.Rich.  —
Habit: Herb.
Habitat: LMDF, BZ, UMF, HZ; 1 900–4 000 m. Distribution: II.
 Voucher: Sirimon Track, Alt. 2 847 m, 17 Jul. 2014, CPG 28382 (HIB, PE).
References: Fries & Fries (1930b), Napper (1968), Blundell (1987), Bussmann (1993, 1994), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 98, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
On the diffeomorphism commutators of lattice quantum gravity
Creators: name: Loll, R.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We show that the algebra of discretized spatial diffeomorphism constraints in Hamiltonian lattice quantum gravity closes without anomalies in the limit of small lattice spacing. The result holds for arbitrary factor-ordering and for a variety of different discretizations of the continuum constraints, and thus generalizes an earlier calculation by Renteln.
description: 16 pages, TeX
The Discovery of the “Free World”: A History of U.S. Foreign Policy
Creators: Slezkine, Peter
Publisher: name: Columbia University
Year: 2021
Subjects: History
Cold War (1945-1989)
International relations
Freedom
Twentieth century

description: On May 9, 1950, President Truman declared that “all our international policies, taken together, form a program designed to strengthen and unite the free world.” My dissertation is the first history of the “free world,” a crucial concept that identified the object of U.S. leadership, drove the country to seek global preeminence, and shaped the American understanding of the Cold War. For much of the nineteenth century, American policymakers had envisioned a globe divided into a “new world” of freedom and an “old world” of tyranny. In 1917, Woodrow Wilson proposed a new global dichotomy, arguing for the creation of a trans-Atlantic coalition of democracies against aggressive autocracies whose very existence threatened the survival of freedom everywhere. A revised version of this logic prevailed during the Second World War. But it was only after the start of the Cold War in the late 1940s that American policymakers embraced the concept of an enduring and extra-hemispheric “free world.” Their efforts to lead, unite and strengthen this spatially defined “free world” prompted a massive expansion of American foreign policy and fundamentally transformed the country’s position in the international arena.
Polarization-sensitive and broadband photodetection based on a mixed-dimensionality TiS3/Si p-n junction
Creators: name: Niu, Yue
name: Frisenda, Riccardo
name: Flores, Eduardo
name: Ares, Jose R.
name: Jiao, Weicheng
name: de Lara, David Perez
name: Sanchez, Carlos
name: Wang, Rongguo
name: Ferrer, Isabel J.
name: Castellanos-Gomez, Andres
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The capability to detect the polarization state of light is crucial in many day-life applications and scientific disciplines. Novel anisotropic two-dimensional materials such as TiS3 combine polarization sensitivity, given by the in-plane optical anisotropy, with excellent electrical properties. Here we demonstrate the fabrication of a monolithic polarization sensitive broadband photodetector based on a mixed-dimensionality TiS3/Si p-n junction. The fabricated devices show broadband responsivity up to 1050 nm, a strong sensitivity to linearly polarized illumination with difference between the two orthogonal polarization states up to 350 % and a good detectivity and fast response time. The discussed devices can be used as building blocks to fabricate more complex polarization sensitive systems such as polarimeters.
description: 6 main text figures, 1 figure. Includes the supporting information (18 supp. info. figures)
The Asymptotic Expansion of Lattice Loop Integrals Around the Continuum Limit
Creators: name: Becher, Thomas
name: Melnikov, Kirill
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present a method of computing any one-loop integral in lattice perturbation theory by systematically expanding around its continuum limit. At any order in the expansion in the lattice spacing, the result can be written as a sum of continuum loop integrals in analytic regularization and a few genuine lattice integrals (``master integrals''). These lattice master integrals are independent of external momenta and masses and can be computed numerically. At the one-loop level, there are four master integrals in a theory with only bosonic fields, seven in HQET and sixteen in QED or QCD with Wilson fermions.
description: 9 pages, 2 figures
Lightweight authentication for quantum key distribution
Creators: name: Kiktenko, E. O.
name: Malyshev, A. O.
name: Gavreev, M. A.
name: Bozhedarov, A. A.
name: Pozhar, N. O.
name: Anufriev, M. N.
name: Fedorov, A. K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Cryptography and Security (cs.CR)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum key distribution (QKD) enables unconditionally secure communication between distinct parties using a quantum channel and an authentic public channel. Reducing the portion of quantum-generated secret keys, that is consumed during the authentication procedure, is of significant importance for improving the performance of QKD systems. In the present work, we develop a lightweight authentication protocol for QKD based on a `ping-pong' scheme of authenticity check for QKD. An important feature of this scheme is that the only one authentication tag is generated and transmitted during each of the QKD post-processing rounds. For the tag generation purpose, we design an unconditionally secure procedure based on the concept of key recycling. The procedure is based on the combination of almost universal$_2$ polynomial hashing, XOR universal$_2$ Toeplitz hashing, and one-time pad (OTP) encryption. We demonstrate how to minimize both the length of the recycled key and the size of the authentication key, that is required for OTP encryption. As a result, in real case scenarios, the portion of quantum-generated secret keys that is consumed for the authentication purposes is below 1\%. Finally, we provide a security analysis of the full quantum key growing process in the framework of universally composable security.
description: 16 pages, 5 figures, 4 tables
Pterocephalus frutescens A. Rich.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Dipsacales
Caprifoliaceae
Pterocephalus
Pterocephalus frutescens

description: Pterocephalus frutescens Hochst. ex A.Rich.  —
Habit: Herb.
Habitat: LMDF; 1 400–2 800 m. Distribution: II.
Voucher: N/A.
References: Fries & Fries (1930b), Kokwaro (1968), Bussmann (1993, 1994), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 98, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Detectability of Gravitational Waves from the Coalescence of Massive Primordial Black Holes with Initial Clustering
Creators: name: Ding, Qianhang
name: Nakama, Tomohiro
name: Silk, Joseph
name: Wang, Yi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the effect of initial non-Gaussian clustering can significantly enhance the event rate for primordial black hole (PBH) coalescence. The impact of such clustering is studied in a specific scenario of multi-stream inflation. Initial clustering enables the possibility of detecting massive PBH coalescence by space-based gravitational wave interferometers such as LISA and DECIGO/BBO. The parameter regime for the ground-based detectors to detect PBH coalescence is also extended.
description: 6 pages, 2 figures
Testing for redlining in the labour market
Creators: name: L'Horty, Yannick
name: Bunel, Mathieu
name: Petit, Pascale
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Pharmacology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: When an employer refuses to recruit a job applicant due to the applicant's place of residence, we speak of redlining in the labour market. There are two explanations for this practice by the employer. The first is the excessive distance between the applicant's place of residence and the workplace, justified by a logic of spatial mismatch. The second is based on the characteristics of the neighbourhood in line with a signal logic. We propose to measure the effects of these two mechanisms using a correspondence test conducted in the Paris region of France for two occupations: waiters and cooks. It appears that distance plays a significant role and reinforces the effect of a disreputable neighbourhood. The most deprived neighbourhoods combine these two types of drawbacks.
title: Hinweis auf Verwilderungen von Polygonum polystachyum Wall. Ex Meisn.
Creators: name: Brandes, Dietmar
Publisher: name: Universitätsbibliothek Braunschweig
Year: 1989
Subjects: subject: 58

description: Es wird auf Verwilderungen des aus dem Himalaya stammenden Polygonum polystachyum im südlichen Mitteleuropa sowie in der Bretagne hingewiesen. Da die Art auch in Deutschland kultiviert wird, ist hier ebenfalls mit subspontanen Vorkommen zu rechnen.
description: The naturalization of the Himalayan species Polygonum polystachyum in Southern Ccntral Europc and in Brittany is pointed out. Because Polygonum polystachyum is also cultivated in Germany, spontaneaus occurence may also happen there.
The Disclosure of Sensitive Information
Creators: Moulton, Elizabeth Edythe
Publisher: name: Columbia University
Year: 2020
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Regret
subject: Disclosure of information
subject: Self-disclosure
subject: Planning

description: The real-life disclosure of sensitive information is associated with intra- and interpersonal benefits in the disclosure literature, but the current work suggests it is often associated with regret. In Chapter 1, an overview is provided of the disclosure literature, and common constructs across sub-disciplines are identified and categorized on select attributes. A general process model of disclosure is proposed. Chapter 2 features empirical examination of factors that contribute to regret following the disclosure of sensitive information. Across five survey-based studies, the qualities of 11,854 disclosures from 974 participants are correlated with participants' reports of post-disclosure regret and gladness. Specific qualities of disclosure are identified that are associated with post-disclosure regret, including that people disclose unintentionally. Conclusions from these studies suggest that planning the disclosure of sensitive information is associated with less post-disclosure regret.
Scabiosa columbaria L.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Dipsacales
Caprifoliaceae
Scabiosa
Scabiosa columbaria

description: Scabiosa columbaria L.  —
Habit: Herb.
Habitat: LMDF, HZ, AZ; 2 000–4 100 m. Distribution: I.
 Voucher: Sirimon Track, near Old Moses Camp site, Alt. 3 212 m, 17 Jul. 2014, CPG 28401 & 28403 (HIB, PE).
References: Fries & Fries (1930b), Young & Peacock (1985), Blundell (1987), Bussmann (1993, 1994), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 98, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Methods for suspensions of passive and active filaments
Creators: name: Schoeller, S. F.
name: Townsend, A. K.
name: Westwood, T. A.
name: Keaveny, E. E.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: 74F10

description: Flexible filaments and fibres are essential components of important complex fluids that appear in many biological and industrial settings. Direct simulations of these systems that capture the motion and deformation of many immersed filaments in suspension remain a formidable computational challenge due to the complex, coupled fluid--structure interactions of all filaments, the numerical stiffness associated with filament bending, and the various constraints that must be maintained as the filaments deform. In this paper, we address these challenges by describing filament kinematics using quaternions to resolve both bending and twisting, applying implicit time-integration to alleviate numerical stiffness, and using quasi-Newton methods to obtain solutions to the resulting system of nonlinear equations. In particular, we employ geometric time integration to ensure that the quaternions remain unit as the filaments move. We also show that our framework can be used with a variety of models and methods, including matrix-free fast methods, that resolve low Reynolds number hydrodynamic interactions. We provide a series of tests and example simulations to demonstrate the performance and possible applications of our method. Finally, we provide a link to a MATLAB/Octave implementation of our framework that can be used to learn more about our approach and as a tool for filament simulation.
Bicritical Behavior of Period Doublings in Unidirectionally-Coupled Maps
Creators: name: Kim, Sang-Yoon
Publisher: name: arXiv
Year: 1999
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study the scaling behavior of period doublings in two unidirectionally-coupled one-dimensional maps near a bicritical point where two critical lines of period-doubling transition to chaos in both subsystems meet. Note that the bicritical point corresponds to a border of chaos in both subsystems. For this bicritical case, the second response subsystem exhibits a new type of non-Feigenbaum critical behavior, while the first drive subsystem is in the Feigenbaum critical state. Using two different methods, we make the renormalization group analysis of the bicritical behavior and find the corresponding fixed point of the renormalization transformation with two relevant eigenvalues. The scaling factors obtained by the renormalization group analysis agree well with those obtained by a direct numerical method.
description: 8 pages, RevTeX
A heterogeneous coefficient approach to the knowledge production function
Creators: name: Autant-Bernard, Corinne
name: LeSage, James P.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy
subject: Plasma Physics
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Past literature has used conventional spatial autoregressive panel data models to relate patent production output to knowledge production inputs. However, research conducted on regional innovation systems points to regional disparities in both regions’ ability to turn their knowledge inputs into innovation and to access external knowledge. Applying a heterogeneous coefficients spatial autoregressive panel model, we estimate region-specific knowledge production functions (KPFs) for 94 NUTS-3 regions in France using a panel covering 21 years from 1988 to 2008 and four high-technology industries. A great deal of regional heterogeneity in the KPF relationship exists across regions, providing new insights regarding spatial spillin and spillout effects between regions.
Spacetime Foam and the Cosmological Constant
Creators: name: Carlip, Steven
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the saddle point approximation, the Euclidean path integral for quantum gravity closely resembles a thermodynamic partition function, with the cosmological constant $Λ$ playing the role of temperature and the ``density of topologies'' acting as an effective density of states. For $Λ<0$, the density of topologies grows superexponentially, and the sum over topologies diverges. In thermodynamics, such a divergence can signal the existence of a maximum temperature. The same may be true in quantum gravity: the effective cosmological constant may be driven to zero by a rapid rise in the density of topologies.
description: 8 pages, LaTeX. Two minor revisions (scaling parameter corrected with new reference; qualification added on Borel summability)
Upperbounds on the probability of finding marked connected components using quantum walks
Creators: name: Glos, Adam
name: Nahimovs, Nikolajs
name: Balakirev, Konstantin
name: Khadiev, Kamil
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Quantum walk search may exhibit phenomena beyond the intuition from a conventional random walk theory. One of such examples is exceptional configuration phenomenon -- it appears that it may be much harder to find any of two or more marked vertices, that if only one of them is marked. In this paper, we analyze the probability of finding any of marked vertices in such scenarios and prove upper bounds for various sets of marked vertices. We apply the upper bounds to large collection of graphs and show that the quantum search may be slow even when taking real-world networks.
Determining Strong and Weak Phases in B_d -> D^{(*)\pm} D^{(*)\mp} Decays
Creators: name: Xing, Zhi-zhong
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that both the weak phase βand the strong phase δ_d can be determined from the time-dependent measurement of B_d -> D^{*\pm} D^{\mp} decays, whose final states are non-CP eigenstates. It is also possible to extract βfrom B_d -> D^{*\pm} D^{*\mp} transitions without doing the angular analysis. Possible final-state rescattering effects in B_d -> D^{(*)\pm} D^{(*)\mp} channels are discussed by means of the isospin analysis. We emphasize that it is worthwhile to check whether the naive factorization approximation works or not for such B-meson decay modes into two heavy charmed mesons.
description: LaTex 4 pages with style file. Talk given at the XIVth Rencontres de Blois on Matter-Antimatter Asymmetry, 16 - 22 June 2002, Blois, France
Allantus luctuosus Mocsary 1909
Creators: name: Taeger, Andreas
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Tenthredinidae
Allantus
Allantus luctuosus

description: Allantus luctuosus Mocsáry, 1909
A junior subjective synonym of Tenthredo (Cephaledo) tuberculata (André, 1882b). Synonymy by Enslin (1910).
TYPES. Allantus luctuosus Mocsáry, 1909: 23. Syntypes Ƥ, “Turkestania: Gouldsha, Ferghana.” Lectotype Ƥ, designated by Taeger, 1985. Type locality: “Gouldsha, Ferghana” [= Kyrgyzstan: Gulcha]. Examined.
description: Published as part of Taeger, Andreas, 2013, The type specimens of Tenthredo Linnaeus, 1758 (Hymenoptera: Tenthredinidae) deposited in the Hungarian Natural History Museum, pp. 201-244 in Zootaxa 3626 (2) on page 221, DOI: 10.11646/zootaxa.3626.2.1, http://zenodo.org/record/248049
Flow Equations for the Henon-Heiles Hamiltonian
Creators: name: Cremers, Daniel
name: Mielke, Andreas
Publisher: name: arXiv
Year: 1998
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The Henon-Heiles Hamiltonian was introduced in 1964 as a mathematical model to describe the chaotic motion of stars in a galaxy. By canonically transforming the classical Hamiltonian to a Birkhoff-Gustavson normalform Delos and Swimm obtained a discrete quantum mechanical energy spectrum. The aim of the present work is to first quantize the classical Hamiltonian and to then diagonalize it using different variants of flow equations, a method of continuous unitary transformations introduced by Wegner in 1994. The results of the diagonalization via flow equations are comparable to those obtained by the classical transformation. In the case of commensurate frequencies the transformation turns out to be less lengthy. In addition, the dynamics of the quantum mechanical system are analyzed on the basis of the transformed observables.
description: latex, 14 pages, 6 figures, uses epsfig, accepted for publication in Physica D
BADIIY MATN XUSUSIYATLARI
Creators: name: Fayzulloyeva, Mashhura
Publisher: name: Zenodo
Year: 2024

description: Mazkur tezisda badiiy matn va uning o’ziga xos xususiyatlari, badiiy matn tabiati hamda uning boshqa matn turlaridan farqlari haqida so’z yuritiladi.
title: Adventivarten in Trifolium resupinatum-Äckern in Niedersachsen
Creators: name: Randig, Walter
name: Brandes, Dietmar
Publisher: name: Elektronisch veröffentlicht: 24.01.2014
Year: 1989
Subjects: subject: 58

description: Vaccaria hispanica und andere Adventivarten im Grünfutteranbau auch in Niedersachsen (Ldkrs. Helmstedt) gefunden.
description: Vaccaria hispanica and other adventitious species are found in Trifolium resupinatum fields also in Lower Saxony.